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-rw-r--r--Documentation/DocBook/drm.tmpl2835
-rw-r--r--Documentation/DocBook/media/Makefile78
-rw-r--r--Documentation/DocBook/media/dvb/audio.xml113
-rw-r--r--Documentation/DocBook/media/dvb/ca.xml353
-rw-r--r--Documentation/DocBook/media/dvb/demux.xml230
-rw-r--r--Documentation/DocBook/media/dvb/dvbapi.xml4
-rw-r--r--Documentation/DocBook/media/dvb/dvbproperty.xml113
-rw-r--r--Documentation/DocBook/media/dvb/frontend.xml71
-rw-r--r--Documentation/DocBook/media/dvb/intro.xml2
-rw-r--r--Documentation/DocBook/media/dvb/kdapi.xml2
-rw-r--r--Documentation/DocBook/media/dvb/net.xml127
-rw-r--r--Documentation/DocBook/media/dvb/video.xml333
-rw-r--r--Documentation/DocBook/media/v4l/biblio.xml52
-rw-r--r--Documentation/DocBook/media/v4l/common.xml30
-rw-r--r--Documentation/DocBook/media/v4l/compat.xml43
-rw-r--r--Documentation/DocBook/media/v4l/controls.xml892
-rw-r--r--Documentation/DocBook/media/v4l/dev-osd.xml7
-rw-r--r--Documentation/DocBook/media/v4l/dev-rds.xml2
-rw-r--r--Documentation/DocBook/media/v4l/dev-subdev.xml20
-rw-r--r--Documentation/DocBook/media/v4l/gen-errors.xml19
-rw-r--r--Documentation/DocBook/media/v4l/io.xml27
-rw-r--r--Documentation/DocBook/media/v4l/pixfmt-nv12m.xml17
-rw-r--r--Documentation/DocBook/media/v4l/pixfmt-srggb10dpcm8.xml3
-rw-r--r--Documentation/DocBook/media/v4l/pixfmt-yvu420m.xml154
-rw-r--r--Documentation/DocBook/media/v4l/pixfmt.xml39
-rw-r--r--Documentation/DocBook/media/v4l/selection-api.xml22
-rw-r--r--Documentation/DocBook/media/v4l/subdev-formats.xml44
-rw-r--r--Documentation/DocBook/media/v4l/v4l2.xml15
-rw-r--r--Documentation/DocBook/media/v4l/vidioc-cropcap.xml12
-rw-r--r--Documentation/DocBook/media/v4l/vidioc-decoder-cmd.xml7
-rw-r--r--Documentation/DocBook/media/v4l/vidioc-encoder-cmd.xml7
-rw-r--r--Documentation/DocBook/media/v4l/vidioc-enum-dv-presets.xml6
-rw-r--r--Documentation/DocBook/media/v4l/vidioc-enum-dv-timings.xml6
-rw-r--r--Documentation/DocBook/media/v4l/vidioc-enum-fmt.xml9
-rw-r--r--Documentation/DocBook/media/v4l/vidioc-enum-framesizes.xml7
-rw-r--r--Documentation/DocBook/media/v4l/vidioc-enuminput.xml2
-rw-r--r--Documentation/DocBook/media/v4l/vidioc-enumoutput.xml2
-rw-r--r--Documentation/DocBook/media/v4l/vidioc-enumstd.xml6
-rw-r--r--Documentation/DocBook/media/v4l/vidioc-g-crop.xml6
-rw-r--r--Documentation/DocBook/media/v4l/vidioc-g-dv-preset.xml9
-rw-r--r--Documentation/DocBook/media/v4l/vidioc-g-dv-timings.xml13
-rw-r--r--Documentation/DocBook/media/v4l/vidioc-g-enc-index.xml7
-rw-r--r--Documentation/DocBook/media/v4l/vidioc-g-fmt.xml13
-rw-r--r--Documentation/DocBook/media/v4l/vidioc-g-parm.xml4
-rw-r--r--Documentation/DocBook/media/v4l/vidioc-g-selection.xml9
-rw-r--r--Documentation/DocBook/media/v4l/vidioc-g-std.xml10
-rw-r--r--Documentation/DocBook/media/v4l/vidioc-g-tuner.xml6
-rw-r--r--Documentation/DocBook/media/v4l/vidioc-qbuf.xml5
-rw-r--r--Documentation/DocBook/media/v4l/vidioc-query-dv-preset.xml9
-rw-r--r--Documentation/DocBook/media/v4l/vidioc-query-dv-timings.xml6
-rw-r--r--Documentation/DocBook/media/v4l/vidioc-querybuf.xml11
-rw-r--r--Documentation/DocBook/media/v4l/vidioc-querycap.xml10
-rw-r--r--Documentation/DocBook/media/v4l/vidioc-querystd.xml8
-rw-r--r--Documentation/DocBook/media/v4l/vidioc-reqbufs.xml5
-rw-r--r--Documentation/DocBook/media/v4l/vidioc-s-hw-freq-seek.xml10
-rw-r--r--Documentation/DocBook/media/v4l/vidioc-streamon.xml7
-rw-r--r--Documentation/DocBook/media/v4l/vidioc-subdev-g-edid.xml152
-rw-r--r--Documentation/DocBook/media/v4l/vidioc-subdev-g-selection.xml8
-rw-r--r--Documentation/DocBook/media_api.tmpl9
-rw-r--r--Documentation/DocBook/mtdnand.tmpl2
-rw-r--r--Documentation/DocBook/networking.tmpl4
61 files changed, 4879 insertions, 1155 deletions
diff --git a/Documentation/DocBook/drm.tmpl b/Documentation/DocBook/drm.tmpl
index 196b8b9dba11..b0300529ab13 100644
--- a/Documentation/DocBook/drm.tmpl
+++ b/Documentation/DocBook/drm.tmpl
@@ -6,11 +6,36 @@
6 <bookinfo> 6 <bookinfo>
7 <title>Linux DRM Developer's Guide</title> 7 <title>Linux DRM Developer's Guide</title>
8 8
9 <authorgroup>
10 <author>
11 <firstname>Jesse</firstname>
12 <surname>Barnes</surname>
13 <contrib>Initial version</contrib>
14 <affiliation>
15 <orgname>Intel Corporation</orgname>
16 <address>
17 <email>jesse.barnes@intel.com</email>
18 </address>
19 </affiliation>
20 </author>
21 <author>
22 <firstname>Laurent</firstname>
23 <surname>Pinchart</surname>
24 <contrib>Driver internals</contrib>
25 <affiliation>
26 <orgname>Ideas on board SPRL</orgname>
27 <address>
28 <email>laurent.pinchart@ideasonboard.com</email>
29 </address>
30 </affiliation>
31 </author>
32 </authorgroup>
33
9 <copyright> 34 <copyright>
10 <year>2008-2009</year> 35 <year>2008-2009</year>
11 <holder> 36 <year>2012</year>
12 Intel Corporation (Jesse Barnes &lt;jesse.barnes@intel.com&gt;) 37 <holder>Intel Corporation</holder>
13 </holder> 38 <holder>Laurent Pinchart</holder>
14 </copyright> 39 </copyright>
15 40
16 <legalnotice> 41 <legalnotice>
@@ -20,6 +45,17 @@
20 the kernel source COPYING file. 45 the kernel source COPYING file.
21 </para> 46 </para>
22 </legalnotice> 47 </legalnotice>
48
49 <revhistory>
50 <!-- Put document revisions here, newest first. -->
51 <revision>
52 <revnumber>1.0</revnumber>
53 <date>2012-07-13</date>
54 <authorinitials>LP</authorinitials>
55 <revremark>Added extensive documentation about driver internals.
56 </revremark>
57 </revision>
58 </revhistory>
23 </bookinfo> 59 </bookinfo>
24 60
25<toc></toc> 61<toc></toc>
@@ -72,342 +108,361 @@
72 submission &amp; fencing, suspend/resume support, and DMA 108 submission &amp; fencing, suspend/resume support, and DMA
73 services. 109 services.
74 </para> 110 </para>
75 <para>
76 The core of every DRM driver is struct drm_driver. Drivers
77 typically statically initialize a drm_driver structure,
78 then pass it to drm_init() at load time.
79 </para>
80 111
81 <!-- Internals: driver init --> 112 <!-- Internals: driver init -->
82 113
83 <sect1> 114 <sect1>
84 <title>Driver initialization</title> 115 <title>Driver Initialization</title>
85 <para> 116 <para>
86 Before calling the DRM initialization routines, the driver must 117 At the core of every DRM driver is a <structname>drm_driver</structname>
87 first create and fill out a struct drm_driver structure. 118 structure. Drivers typically statically initialize a drm_driver structure,
88 </para> 119 and then pass it to one of the <function>drm_*_init()</function> functions
89 <programlisting> 120 to register it with the DRM subsystem.
90 static struct drm_driver driver = {
91 /* Don't use MTRRs here; the Xserver or userspace app should
92 * deal with them for Intel hardware.
93 */
94 .driver_features =
95 DRIVER_USE_AGP | DRIVER_REQUIRE_AGP |
96 DRIVER_HAVE_IRQ | DRIVER_IRQ_SHARED | DRIVER_MODESET,
97 .load = i915_driver_load,
98 .unload = i915_driver_unload,
99 .firstopen = i915_driver_firstopen,
100 .lastclose = i915_driver_lastclose,
101 .preclose = i915_driver_preclose,
102 .save = i915_save,
103 .restore = i915_restore,
104 .device_is_agp = i915_driver_device_is_agp,
105 .get_vblank_counter = i915_get_vblank_counter,
106 .enable_vblank = i915_enable_vblank,
107 .disable_vblank = i915_disable_vblank,
108 .irq_preinstall = i915_driver_irq_preinstall,
109 .irq_postinstall = i915_driver_irq_postinstall,
110 .irq_uninstall = i915_driver_irq_uninstall,
111 .irq_handler = i915_driver_irq_handler,
112 .reclaim_buffers = drm_core_reclaim_buffers,
113 .get_map_ofs = drm_core_get_map_ofs,
114 .get_reg_ofs = drm_core_get_reg_ofs,
115 .fb_probe = intelfb_probe,
116 .fb_remove = intelfb_remove,
117 .fb_resize = intelfb_resize,
118 .master_create = i915_master_create,
119 .master_destroy = i915_master_destroy,
120#if defined(CONFIG_DEBUG_FS)
121 .debugfs_init = i915_debugfs_init,
122 .debugfs_cleanup = i915_debugfs_cleanup,
123#endif
124 .gem_init_object = i915_gem_init_object,
125 .gem_free_object = i915_gem_free_object,
126 .gem_vm_ops = &amp;i915_gem_vm_ops,
127 .ioctls = i915_ioctls,
128 .fops = {
129 .owner = THIS_MODULE,
130 .open = drm_open,
131 .release = drm_release,
132 .ioctl = drm_ioctl,
133 .mmap = drm_mmap,
134 .poll = drm_poll,
135 .fasync = drm_fasync,
136#ifdef CONFIG_COMPAT
137 .compat_ioctl = i915_compat_ioctl,
138#endif
139 .llseek = noop_llseek,
140 },
141 .pci_driver = {
142 .name = DRIVER_NAME,
143 .id_table = pciidlist,
144 .probe = probe,
145 .remove = __devexit_p(drm_cleanup_pci),
146 },
147 .name = DRIVER_NAME,
148 .desc = DRIVER_DESC,
149 .date = DRIVER_DATE,
150 .major = DRIVER_MAJOR,
151 .minor = DRIVER_MINOR,
152 .patchlevel = DRIVER_PATCHLEVEL,
153 };
154 </programlisting>
155 <para>
156 In the example above, taken from the i915 DRM driver, the driver
157 sets several flags indicating what core features it supports;
158 we go over the individual callbacks in later sections. Since
159 flags indicate which features your driver supports to the DRM
160 core, you need to set most of them prior to calling drm_init(). Some,
161 like DRIVER_MODESET can be set later based on user supplied parameters,
162 but that's the exception rather than the rule.
163 </para>
164 <variablelist>
165 <title>Driver flags</title>
166 <varlistentry>
167 <term>DRIVER_USE_AGP</term>
168 <listitem><para>
169 Driver uses AGP interface
170 </para></listitem>
171 </varlistentry>
172 <varlistentry>
173 <term>DRIVER_REQUIRE_AGP</term>
174 <listitem><para>
175 Driver needs AGP interface to function.
176 </para></listitem>
177 </varlistentry>
178 <varlistentry>
179 <term>DRIVER_USE_MTRR</term>
180 <listitem>
181 <para>
182 Driver uses MTRR interface for mapping memory. Deprecated.
183 </para>
184 </listitem>
185 </varlistentry>
186 <varlistentry>
187 <term>DRIVER_PCI_DMA</term>
188 <listitem><para>
189 Driver is capable of PCI DMA. Deprecated.
190 </para></listitem>
191 </varlistentry>
192 <varlistentry>
193 <term>DRIVER_SG</term>
194 <listitem><para>
195 Driver can perform scatter/gather DMA. Deprecated.
196 </para></listitem>
197 </varlistentry>
198 <varlistentry>
199 <term>DRIVER_HAVE_DMA</term>
200 <listitem><para>Driver supports DMA. Deprecated.</para></listitem>
201 </varlistentry>
202 <varlistentry>
203 <term>DRIVER_HAVE_IRQ</term><term>DRIVER_IRQ_SHARED</term>
204 <listitem>
205 <para>
206 DRIVER_HAVE_IRQ indicates whether the driver has an IRQ
207 handler. DRIVER_IRQ_SHARED indicates whether the device &amp;
208 handler support shared IRQs (note that this is required of
209 PCI drivers).
210 </para>
211 </listitem>
212 </varlistentry>
213 <varlistentry>
214 <term>DRIVER_DMA_QUEUE</term>
215 <listitem>
216 <para>
217 Should be set if the driver queues DMA requests and completes them
218 asynchronously. Deprecated.
219 </para>
220 </listitem>
221 </varlistentry>
222 <varlistentry>
223 <term>DRIVER_FB_DMA</term>
224 <listitem>
225 <para>
226 Driver supports DMA to/from the framebuffer. Deprecated.
227 </para>
228 </listitem>
229 </varlistentry>
230 <varlistentry>
231 <term>DRIVER_MODESET</term>
232 <listitem>
233 <para>
234 Driver supports mode setting interfaces.
235 </para>
236 </listitem>
237 </varlistentry>
238 </variablelist>
239 <para>
240 In this specific case, the driver requires AGP and supports
241 IRQs. DMA, as discussed later, is handled by device-specific ioctls
242 in this case. It also supports the kernel mode setting APIs, though
243 unlike in the actual i915 driver source, this example unconditionally
244 exports KMS capability.
245 </para> 121 </para>
246 </sect1> 122 <para>
247 123 The <structname>drm_driver</structname> structure contains static
248 <!-- Internals: driver load --> 124 information that describes the driver and features it supports, and
249 125 pointers to methods that the DRM core will call to implement the DRM API.
250 <sect1> 126 We will first go through the <structname>drm_driver</structname> static
251 <title>Driver load</title> 127 information fields, and will then describe individual operations in
252 <para> 128 details as they get used in later sections.
253 In the previous section, we saw what a typical drm_driver
254 structure might look like. One of the more important fields in
255 the structure is the hook for the load function.
256 </para>
257 <programlisting>
258 static struct drm_driver driver = {
259 ...
260 .load = i915_driver_load,
261 ...
262 };
263 </programlisting>
264 <para>
265 The load function has many responsibilities: allocating a driver
266 private structure, specifying supported performance counters,
267 configuring the device (e.g. mapping registers &amp; command
268 buffers), initializing the memory manager, and setting up the
269 initial output configuration.
270 </para>
271 <para>
272 If compatibility is a concern (e.g. with drivers converted over
273 to the new interfaces from the old ones), care must be taken to
274 prevent device initialization and control that is incompatible with
275 currently active userspace drivers. For instance, if user
276 level mode setting drivers are in use, it would be problematic
277 to perform output discovery &amp; configuration at load time.
278 Likewise, if user-level drivers unaware of memory management are
279 in use, memory management and command buffer setup may need to
280 be omitted. These requirements are driver-specific, and care
281 needs to be taken to keep both old and new applications and
282 libraries working. The i915 driver supports the "modeset"
283 module parameter to control whether advanced features are
284 enabled at load time or in legacy fashion.
285 </para> 129 </para>
286
287 <sect2> 130 <sect2>
288 <title>Driver private &amp; performance counters</title> 131 <title>Driver Information</title>
289 <para> 132 <sect3>
290 The driver private hangs off the main drm_device structure and 133 <title>Driver Features</title>
291 can be used for tracking various device-specific bits of 134 <para>
292 information, like register offsets, command buffer status, 135 Drivers inform the DRM core about their requirements and supported
293 register state for suspend/resume, etc. At load time, a 136 features by setting appropriate flags in the
294 driver may simply allocate one and set drm_device.dev_priv 137 <structfield>driver_features</structfield> field. Since those flags
295 appropriately; it should be freed and drm_device.dev_priv set 138 influence the DRM core behaviour since registration time, most of them
296 to NULL when the driver is unloaded. 139 must be set to registering the <structname>drm_driver</structname>
297 </para> 140 instance.
141 </para>
142 <synopsis>u32 driver_features;</synopsis>
143 <variablelist>
144 <title>Driver Feature Flags</title>
145 <varlistentry>
146 <term>DRIVER_USE_AGP</term>
147 <listitem><para>
148 Driver uses AGP interface, the DRM core will manage AGP resources.
149 </para></listitem>
150 </varlistentry>
151 <varlistentry>
152 <term>DRIVER_REQUIRE_AGP</term>
153 <listitem><para>
154 Driver needs AGP interface to function. AGP initialization failure
155 will become a fatal error.
156 </para></listitem>
157 </varlistentry>
158 <varlistentry>
159 <term>DRIVER_USE_MTRR</term>
160 <listitem><para>
161 Driver uses MTRR interface for mapping memory, the DRM core will
162 manage MTRR resources. Deprecated.
163 </para></listitem>
164 </varlistentry>
165 <varlistentry>
166 <term>DRIVER_PCI_DMA</term>
167 <listitem><para>
168 Driver is capable of PCI DMA, mapping of PCI DMA buffers to
169 userspace will be enabled. Deprecated.
170 </para></listitem>
171 </varlistentry>
172 <varlistentry>
173 <term>DRIVER_SG</term>
174 <listitem><para>
175 Driver can perform scatter/gather DMA, allocation and mapping of
176 scatter/gather buffers will be enabled. Deprecated.
177 </para></listitem>
178 </varlistentry>
179 <varlistentry>
180 <term>DRIVER_HAVE_DMA</term>
181 <listitem><para>
182 Driver supports DMA, the userspace DMA API will be supported.
183 Deprecated.
184 </para></listitem>
185 </varlistentry>
186 <varlistentry>
187 <term>DRIVER_HAVE_IRQ</term><term>DRIVER_IRQ_SHARED</term>
188 <listitem><para>
189 DRIVER_HAVE_IRQ indicates whether the driver has an IRQ handler. The
190 DRM core will automatically register an interrupt handler when the
191 flag is set. DRIVER_IRQ_SHARED indicates whether the device &amp;
192 handler support shared IRQs (note that this is required of PCI
193 drivers).
194 </para></listitem>
195 </varlistentry>
196 <varlistentry>
197 <term>DRIVER_IRQ_VBL</term>
198 <listitem><para>Unused. Deprecated.</para></listitem>
199 </varlistentry>
200 <varlistentry>
201 <term>DRIVER_DMA_QUEUE</term>
202 <listitem><para>
203 Should be set if the driver queues DMA requests and completes them
204 asynchronously. Deprecated.
205 </para></listitem>
206 </varlistentry>
207 <varlistentry>
208 <term>DRIVER_FB_DMA</term>
209 <listitem><para>
210 Driver supports DMA to/from the framebuffer, mapping of frambuffer
211 DMA buffers to userspace will be supported. Deprecated.
212 </para></listitem>
213 </varlistentry>
214 <varlistentry>
215 <term>DRIVER_IRQ_VBL2</term>
216 <listitem><para>Unused. Deprecated.</para></listitem>
217 </varlistentry>
218 <varlistentry>
219 <term>DRIVER_GEM</term>
220 <listitem><para>
221 Driver use the GEM memory manager.
222 </para></listitem>
223 </varlistentry>
224 <varlistentry>
225 <term>DRIVER_MODESET</term>
226 <listitem><para>
227 Driver supports mode setting interfaces (KMS).
228 </para></listitem>
229 </varlistentry>
230 <varlistentry>
231 <term>DRIVER_PRIME</term>
232 <listitem><para>
233 Driver implements DRM PRIME buffer sharing.
234 </para></listitem>
235 </varlistentry>
236 </variablelist>
237 </sect3>
238 <sect3>
239 <title>Major, Minor and Patchlevel</title>
240 <synopsis>int major;
241int minor;
242int patchlevel;</synopsis>
243 <para>
244 The DRM core identifies driver versions by a major, minor and patch
245 level triplet. The information is printed to the kernel log at
246 initialization time and passed to userspace through the
247 DRM_IOCTL_VERSION ioctl.
248 </para>
249 <para>
250 The major and minor numbers are also used to verify the requested driver
251 API version passed to DRM_IOCTL_SET_VERSION. When the driver API changes
252 between minor versions, applications can call DRM_IOCTL_SET_VERSION to
253 select a specific version of the API. If the requested major isn't equal
254 to the driver major, or the requested minor is larger than the driver
255 minor, the DRM_IOCTL_SET_VERSION call will return an error. Otherwise
256 the driver's set_version() method will be called with the requested
257 version.
258 </para>
259 </sect3>
260 <sect3>
261 <title>Name, Description and Date</title>
262 <synopsis>char *name;
263char *desc;
264char *date;</synopsis>
265 <para>
266 The driver name is printed to the kernel log at initialization time,
267 used for IRQ registration and passed to userspace through
268 DRM_IOCTL_VERSION.
269 </para>
270 <para>
271 The driver description is a purely informative string passed to
272 userspace through the DRM_IOCTL_VERSION ioctl and otherwise unused by
273 the kernel.
274 </para>
275 <para>
276 The driver date, formatted as YYYYMMDD, is meant to identify the date of
277 the latest modification to the driver. However, as most drivers fail to
278 update it, its value is mostly useless. The DRM core prints it to the
279 kernel log at initialization time and passes it to userspace through the
280 DRM_IOCTL_VERSION ioctl.
281 </para>
282 </sect3>
283 </sect2>
284 <sect2>
285 <title>Driver Load</title>
298 <para> 286 <para>
299 The DRM supports several counters which may be used for rough 287 The <methodname>load</methodname> method is the driver and device
300 performance characterization. Note that the DRM stat counter 288 initialization entry point. The method is responsible for allocating and
301 system is not often used by applications, and supporting 289 initializing driver private data, specifying supported performance
302 additional counters is completely optional. 290 counters, performing resource allocation and mapping (e.g. acquiring
291 clocks, mapping registers or allocating command buffers), initializing
292 the memory manager (<xref linkend="drm-memory-management"/>), installing
293 the IRQ handler (<xref linkend="drm-irq-registration"/>), setting up
294 vertical blanking handling (<xref linkend="drm-vertical-blank"/>), mode
295 setting (<xref linkend="drm-mode-setting"/>) and initial output
296 configuration (<xref linkend="drm-kms-init"/>).
303 </para> 297 </para>
298 <note><para>
299 If compatibility is a concern (e.g. with drivers converted over from
300 User Mode Setting to Kernel Mode Setting), care must be taken to prevent
301 device initialization and control that is incompatible with currently
302 active userspace drivers. For instance, if user level mode setting
303 drivers are in use, it would be problematic to perform output discovery
304 &amp; configuration at load time. Likewise, if user-level drivers
305 unaware of memory management are in use, memory management and command
306 buffer setup may need to be omitted. These requirements are
307 driver-specific, and care needs to be taken to keep both old and new
308 applications and libraries working.
309 </para></note>
310 <synopsis>int (*load) (struct drm_device *, unsigned long flags);</synopsis>
304 <para> 311 <para>
305 These interfaces are deprecated and should not be used. If performance 312 The method takes two arguments, a pointer to the newly created
306 monitoring is desired, the developer should investigate and 313 <structname>drm_device</structname> and flags. The flags are used to
307 potentially enhance the kernel perf and tracing infrastructure to export 314 pass the <structfield>driver_data</structfield> field of the device id
308 GPU related performance information for consumption by performance 315 corresponding to the device passed to <function>drm_*_init()</function>.
309 monitoring tools and applications. 316 Only PCI devices currently use this, USB and platform DRM drivers have
317 their <methodname>load</methodname> method called with flags to 0.
310 </para> 318 </para>
319 <sect3>
320 <title>Driver Private &amp; Performance Counters</title>
321 <para>
322 The driver private hangs off the main
323 <structname>drm_device</structname> structure and can be used for
324 tracking various device-specific bits of information, like register
325 offsets, command buffer status, register state for suspend/resume, etc.
326 At load time, a driver may simply allocate one and set
327 <structname>drm_device</structname>.<structfield>dev_priv</structfield>
328 appropriately; it should be freed and
329 <structname>drm_device</structname>.<structfield>dev_priv</structfield>
330 set to NULL when the driver is unloaded.
331 </para>
332 <para>
333 DRM supports several counters which were used for rough performance
334 characterization. This stat counter system is deprecated and should not
335 be used. If performance monitoring is desired, the developer should
336 investigate and potentially enhance the kernel perf and tracing
337 infrastructure to export GPU related performance information for
338 consumption by performance monitoring tools and applications.
339 </para>
340 </sect3>
341 <sect3 id="drm-irq-registration">
342 <title>IRQ Registration</title>
343 <para>
344 The DRM core tries to facilitate IRQ handler registration and
345 unregistration by providing <function>drm_irq_install</function> and
346 <function>drm_irq_uninstall</function> functions. Those functions only
347 support a single interrupt per device.
348 </para>
349 <!--!Fdrivers/char/drm/drm_irq.c drm_irq_install-->
350 <para>
351 Both functions get the device IRQ by calling
352 <function>drm_dev_to_irq</function>. This inline function will call a
353 bus-specific operation to retrieve the IRQ number. For platform devices,
354 <function>platform_get_irq</function>(..., 0) is used to retrieve the
355 IRQ number.
356 </para>
357 <para>
358 <function>drm_irq_install</function> starts by calling the
359 <methodname>irq_preinstall</methodname> driver operation. The operation
360 is optional and must make sure that the interrupt will not get fired by
361 clearing all pending interrupt flags or disabling the interrupt.
362 </para>
363 <para>
364 The IRQ will then be requested by a call to
365 <function>request_irq</function>. If the DRIVER_IRQ_SHARED driver
366 feature flag is set, a shared (IRQF_SHARED) IRQ handler will be
367 requested.
368 </para>
369 <para>
370 The IRQ handler function must be provided as the mandatory irq_handler
371 driver operation. It will get passed directly to
372 <function>request_irq</function> and thus has the same prototype as all
373 IRQ handlers. It will get called with a pointer to the DRM device as the
374 second argument.
375 </para>
376 <para>
377 Finally the function calls the optional
378 <methodname>irq_postinstall</methodname> driver operation. The operation
379 usually enables interrupts (excluding the vblank interrupt, which is
380 enabled separately), but drivers may choose to enable/disable interrupts
381 at a different time.
382 </para>
383 <para>
384 <function>drm_irq_uninstall</function> is similarly used to uninstall an
385 IRQ handler. It starts by waking up all processes waiting on a vblank
386 interrupt to make sure they don't hang, and then calls the optional
387 <methodname>irq_uninstall</methodname> driver operation. The operation
388 must disable all hardware interrupts. Finally the function frees the IRQ
389 by calling <function>free_irq</function>.
390 </para>
391 </sect3>
392 <sect3>
393 <title>Memory Manager Initialization</title>
394 <para>
395 Every DRM driver requires a memory manager which must be initialized at
396 load time. DRM currently contains two memory managers, the Translation
397 Table Manager (TTM) and the Graphics Execution Manager (GEM).
398 This document describes the use of the GEM memory manager only. See
399 <xref linkend="drm-memory-management"/> for details.
400 </para>
401 </sect3>
402 <sect3>
403 <title>Miscellaneous Device Configuration</title>
404 <para>
405 Another task that may be necessary for PCI devices during configuration
406 is mapping the video BIOS. On many devices, the VBIOS describes device
407 configuration, LCD panel timings (if any), and contains flags indicating
408 device state. Mapping the BIOS can be done using the pci_map_rom() call,
409 a convenience function that takes care of mapping the actual ROM,
410 whether it has been shadowed into memory (typically at address 0xc0000)
411 or exists on the PCI device in the ROM BAR. Note that after the ROM has
412 been mapped and any necessary information has been extracted, it should
413 be unmapped; on many devices, the ROM address decoder is shared with
414 other BARs, so leaving it mapped could cause undesired behaviour like
415 hangs or memory corruption.
416 <!--!Fdrivers/pci/rom.c pci_map_rom-->
417 </para>
418 </sect3>
311 </sect2> 419 </sect2>
420 </sect1>
312 421
313 <sect2> 422 <!-- Internals: memory management -->
314 <title>Configuring the device</title>
315 <para>
316 Obviously, device configuration is device-specific.
317 However, there are several common operations: finding a
318 device's PCI resources, mapping them, and potentially setting
319 up an IRQ handler.
320 </para>
321 <para>
322 Finding &amp; mapping resources is fairly straightforward. The
323 DRM wrapper functions, drm_get_resource_start() and
324 drm_get_resource_len(), may be used to find BARs on the given
325 drm_device struct. Once those values have been retrieved, the
326 driver load function can call drm_addmap() to create a new
327 mapping for the BAR in question. Note that you probably want a
328 drm_local_map_t in your driver private structure to track any
329 mappings you create.
330<!-- !Fdrivers/gpu/drm/drm_bufs.c drm_get_resource_* -->
331<!-- !Finclude/drm/drmP.h drm_local_map_t -->
332 </para>
333 <para>
334 if compatibility with other operating systems isn't a concern
335 (DRM drivers can run under various BSD variants and OpenSolaris),
336 native Linux calls may be used for the above, e.g. pci_resource_*
337 and iomap*/iounmap. See the Linux device driver book for more
338 info.
339 </para>
340 <para>
341 Once you have a register map, you may use the DRM_READn() and
342 DRM_WRITEn() macros to access the registers on your device, or
343 use driver-specific versions to offset into your MMIO space
344 relative to a driver-specific base pointer (see I915_READ for
345 an example).
346 </para>
347 <para>
348 If your device supports interrupt generation, you may want to
349 set up an interrupt handler when the driver is loaded. This
350 is done using the drm_irq_install() function. If your device
351 supports vertical blank interrupts, it should call
352 drm_vblank_init() to initialize the core vblank handling code before
353 enabling interrupts on your device. This ensures the vblank related
354 structures are allocated and allows the core to handle vblank events.
355 </para>
356<!--!Fdrivers/char/drm/drm_irq.c drm_irq_install-->
357 <para>
358 Once your interrupt handler is registered (it uses your
359 drm_driver.irq_handler as the actual interrupt handling
360 function), you can safely enable interrupts on your device,
361 assuming any other state your interrupt handler uses is also
362 initialized.
363 </para>
364 <para>
365 Another task that may be necessary during configuration is
366 mapping the video BIOS. On many devices, the VBIOS describes
367 device configuration, LCD panel timings (if any), and contains
368 flags indicating device state. Mapping the BIOS can be done
369 using the pci_map_rom() call, a convenience function that
370 takes care of mapping the actual ROM, whether it has been
371 shadowed into memory (typically at address 0xc0000) or exists
372 on the PCI device in the ROM BAR. Note that after the ROM
373 has been mapped and any necessary information has been extracted,
374 it should be unmapped; on many devices, the ROM address decoder is
375 shared with other BARs, so leaving it mapped could cause
376 undesired behavior like hangs or memory corruption.
377<!--!Fdrivers/pci/rom.c pci_map_rom-->
378 </para>
379 </sect2>
380 423
424 <sect1 id="drm-memory-management">
425 <title>Memory management</title>
426 <para>
427 Modern Linux systems require large amount of graphics memory to store
428 frame buffers, textures, vertices and other graphics-related data. Given
429 the very dynamic nature of many of that data, managing graphics memory
430 efficiently is thus crucial for the graphics stack and plays a central
431 role in the DRM infrastructure.
432 </para>
433 <para>
434 The DRM core includes two memory managers, namely Translation Table Maps
435 (TTM) and Graphics Execution Manager (GEM). TTM was the first DRM memory
436 manager to be developed and tried to be a one-size-fits-them all
437 solution. It provides a single userspace API to accomodate the need of
438 all hardware, supporting both Unified Memory Architecture (UMA) devices
439 and devices with dedicated video RAM (i.e. most discrete video cards).
440 This resulted in a large, complex piece of code that turned out to be
441 hard to use for driver development.
442 </para>
443 <para>
444 GEM started as an Intel-sponsored project in reaction to TTM's
445 complexity. Its design philosophy is completely different: instead of
446 providing a solution to every graphics memory-related problems, GEM
447 identified common code between drivers and created a support library to
448 share it. GEM has simpler initialization and execution requirements than
449 TTM, but has no video RAM management capabitilies and is thus limited to
450 UMA devices.
451 </para>
381 <sect2> 452 <sect2>
382 <title>Memory manager initialization</title> 453 <title>The Translation Table Manager (TTM)</title>
383 <para>
384 In order to allocate command buffers, cursor memory, scanout
385 buffers, etc., as well as support the latest features provided
386 by packages like Mesa and the X.Org X server, your driver
387 should support a memory manager.
388 </para>
389 <para> 454 <para>
390 If your driver supports memory management (it should!), you 455 TTM design background and information belongs here.
391 need to set that up at load time as well. How you initialize
392 it depends on which memory manager you're using: TTM or GEM.
393 </para> 456 </para>
394 <sect3> 457 <sect3>
395 <title>TTM initialization</title> 458 <title>TTM initialization</title>
396 <para> 459 <warning><para>This section is outdated.</para></warning>
397 TTM (for Translation Table Manager) manages video memory and 460 <para>
398 aperture space for graphics devices. TTM supports both UMA devices 461 Drivers wishing to support TTM must fill out a drm_bo_driver
399 and devices with dedicated video RAM (VRAM), i.e. most discrete 462 structure. The structure contains several fields with function
400 graphics devices. If your device has dedicated RAM, supporting 463 pointers for initializing the TTM, allocating and freeing memory,
401 TTM is desirable. TTM also integrates tightly with your 464 waiting for command completion and fence synchronization, and memory
402 driver-specific buffer execution function. See the radeon 465 migration. See the radeon_ttm.c file for an example of usage.
403 driver for examples.
404 </para>
405 <para>
406 The core TTM structure is the ttm_bo_driver struct. It contains
407 several fields with function pointers for initializing the TTM,
408 allocating and freeing memory, waiting for command completion
409 and fence synchronization, and memory migration. See the
410 radeon_ttm.c file for an example of usage.
411 </para> 466 </para>
412 <para> 467 <para>
413 The ttm_global_reference structure is made up of several fields: 468 The ttm_global_reference structure is made up of several fields:
@@ -445,82 +500,1081 @@
445 count for the TTM, which will call your initialization function. 500 count for the TTM, which will call your initialization function.
446 </para> 501 </para>
447 </sect3> 502 </sect3>
503 </sect2>
504 <sect2 id="drm-gem">
505 <title>The Graphics Execution Manager (GEM)</title>
506 <para>
507 The GEM design approach has resulted in a memory manager that doesn't
508 provide full coverage of all (or even all common) use cases in its
509 userspace or kernel API. GEM exposes a set of standard memory-related
510 operations to userspace and a set of helper functions to drivers, and let
511 drivers implement hardware-specific operations with their own private API.
512 </para>
513 <para>
514 The GEM userspace API is described in the
515 <ulink url="http://lwn.net/Articles/283798/"><citetitle>GEM - the Graphics
516 Execution Manager</citetitle></ulink> article on LWN. While slightly
517 outdated, the document provides a good overview of the GEM API principles.
518 Buffer allocation and read and write operations, described as part of the
519 common GEM API, are currently implemented using driver-specific ioctls.
520 </para>
521 <para>
522 GEM is data-agnostic. It manages abstract buffer objects without knowing
523 what individual buffers contain. APIs that require knowledge of buffer
524 contents or purpose, such as buffer allocation or synchronization
525 primitives, are thus outside of the scope of GEM and must be implemented
526 using driver-specific ioctls.
527 </para>
528 <para>
529 On a fundamental level, GEM involves several operations:
530 <itemizedlist>
531 <listitem>Memory allocation and freeing</listitem>
532 <listitem>Command execution</listitem>
533 <listitem>Aperture management at command execution time</listitem>
534 </itemizedlist>
535 Buffer object allocation is relatively straightforward and largely
536 provided by Linux's shmem layer, which provides memory to back each
537 object.
538 </para>
539 <para>
540 Device-specific operations, such as command execution, pinning, buffer
541 read &amp; write, mapping, and domain ownership transfers are left to
542 driver-specific ioctls.
543 </para>
544 <sect3>
545 <title>GEM Initialization</title>
546 <para>
547 Drivers that use GEM must set the DRIVER_GEM bit in the struct
548 <structname>drm_driver</structname>
549 <structfield>driver_features</structfield> field. The DRM core will
550 then automatically initialize the GEM core before calling the
551 <methodname>load</methodname> operation. Behind the scene, this will
552 create a DRM Memory Manager object which provides an address space
553 pool for object allocation.
554 </para>
555 <para>
556 In a KMS configuration, drivers need to allocate and initialize a
557 command ring buffer following core GEM initialization if required by
558 the hardware. UMA devices usually have what is called a "stolen"
559 memory region, which provides space for the initial framebuffer and
560 large, contiguous memory regions required by the device. This space is
561 typically not managed by GEM, and must be initialized separately into
562 its own DRM MM object.
563 </para>
564 </sect3>
448 <sect3> 565 <sect3>
449 <title>GEM initialization</title> 566 <title>GEM Objects Creation</title>
450 <para> 567 <para>
451 GEM is an alternative to TTM, designed specifically for UMA 568 GEM splits creation of GEM objects and allocation of the memory that
452 devices. It has simpler initialization and execution requirements 569 backs them in two distinct operations.
453 than TTM, but has no VRAM management capability. Core GEM 570 </para>
454 is initialized by calling drm_mm_init() to create 571 <para>
455 a GTT DRM MM object, which provides an address space pool for 572 GEM objects are represented by an instance of struct
456 object allocation. In a KMS configuration, the driver 573 <structname>drm_gem_object</structname>. Drivers usually need to extend
457 needs to allocate and initialize a command ring buffer following 574 GEM objects with private information and thus create a driver-specific
458 core GEM initialization. A UMA device usually has what is called a 575 GEM object structure type that embeds an instance of struct
459 "stolen" memory region, which provides space for the initial 576 <structname>drm_gem_object</structname>.
460 framebuffer and large, contiguous memory regions required by the 577 </para>
461 device. This space is not typically managed by GEM, and it must 578 <para>
462 be initialized separately into its own DRM MM object. 579 To create a GEM object, a driver allocates memory for an instance of its
463 </para> 580 specific GEM object type and initializes the embedded struct
464 <para> 581 <structname>drm_gem_object</structname> with a call to
465 Initialization is driver-specific. In the case of Intel 582 <function>drm_gem_object_init</function>. The function takes a pointer to
466 integrated graphics chips like 965GM, GEM initialization can 583 the DRM device, a pointer to the GEM object and the buffer object size
467 be done by calling the internal GEM init function, 584 in bytes.
468 i915_gem_do_init(). Since the 965GM is a UMA device 585 </para>
469 (i.e. it doesn't have dedicated VRAM), GEM manages 586 <para>
470 making regular RAM available for GPU operations. Memory set 587 GEM uses shmem to allocate anonymous pageable memory.
471 aside by the BIOS (called "stolen" memory by the i915 588 <function>drm_gem_object_init</function> will create an shmfs file of
472 driver) is managed by the DRM memrange allocator; the 589 the requested size and store it into the struct
473 rest of the aperture is managed by GEM. 590 <structname>drm_gem_object</structname> <structfield>filp</structfield>
474 <programlisting> 591 field. The memory is used as either main storage for the object when the
475 /* Basic memrange allocator for stolen space (aka vram) */ 592 graphics hardware uses system memory directly or as a backing store
476 drm_memrange_init(&amp;dev_priv->vram, 0, prealloc_size); 593 otherwise.
477 /* Let GEM Manage from end of prealloc space to end of aperture */ 594 </para>
478 i915_gem_do_init(dev, prealloc_size, agp_size); 595 <para>
479 </programlisting> 596 Drivers are responsible for the actual physical pages allocation by
480<!--!Edrivers/char/drm/drm_memrange.c--> 597 calling <function>shmem_read_mapping_page_gfp</function> for each page.
481 </para> 598 Note that they can decide to allocate pages when initializing the GEM
482 <para> 599 object, or to delay allocation until the memory is needed (for instance
483 Once the memory manager has been set up, we may allocate the 600 when a page fault occurs as a result of a userspace memory access or
484 command buffer. In the i915 case, this is also done with a 601 when the driver needs to start a DMA transfer involving the memory).
485 GEM function, i915_gem_init_ringbuffer(). 602 </para>
486 </para> 603 <para>
604 Anonymous pageable memory allocation is not always desired, for instance
605 when the hardware requires physically contiguous system memory as is
606 often the case in embedded devices. Drivers can create GEM objects with
607 no shmfs backing (called private GEM objects) by initializing them with
608 a call to <function>drm_gem_private_object_init</function> instead of
609 <function>drm_gem_object_init</function>. Storage for private GEM
610 objects must be managed by drivers.
611 </para>
612 <para>
613 Drivers that do not need to extend GEM objects with private information
614 can call the <function>drm_gem_object_alloc</function> function to
615 allocate and initialize a struct <structname>drm_gem_object</structname>
616 instance. The GEM core will call the optional driver
617 <methodname>gem_init_object</methodname> operation after initializing
618 the GEM object with <function>drm_gem_object_init</function>.
619 <synopsis>int (*gem_init_object) (struct drm_gem_object *obj);</synopsis>
620 </para>
621 <para>
622 No alloc-and-init function exists for private GEM objects.
623 </para>
624 </sect3>
625 <sect3>
626 <title>GEM Objects Lifetime</title>
627 <para>
628 All GEM objects are reference-counted by the GEM core. References can be
629 acquired and release by <function>calling drm_gem_object_reference</function>
630 and <function>drm_gem_object_unreference</function> respectively. The
631 caller must hold the <structname>drm_device</structname>
632 <structfield>struct_mutex</structfield> lock. As a convenience, GEM
633 provides the <function>drm_gem_object_reference_unlocked</function> and
634 <function>drm_gem_object_unreference_unlocked</function> functions that
635 can be called without holding the lock.
636 </para>
637 <para>
638 When the last reference to a GEM object is released the GEM core calls
639 the <structname>drm_driver</structname>
640 <methodname>gem_free_object</methodname> operation. That operation is
641 mandatory for GEM-enabled drivers and must free the GEM object and all
642 associated resources.
643 </para>
644 <para>
645 <synopsis>void (*gem_free_object) (struct drm_gem_object *obj);</synopsis>
646 Drivers are responsible for freeing all GEM object resources, including
647 the resources created by the GEM core. If an mmap offset has been
648 created for the object (in which case
649 <structname>drm_gem_object</structname>::<structfield>map_list</structfield>::<structfield>map</structfield>
650 is not NULL) it must be freed by a call to
651 <function>drm_gem_free_mmap_offset</function>. The shmfs backing store
652 must be released by calling <function>drm_gem_object_release</function>
653 (that function can safely be called if no shmfs backing store has been
654 created).
655 </para>
656 </sect3>
657 <sect3>
658 <title>GEM Objects Naming</title>
659 <para>
660 Communication between userspace and the kernel refers to GEM objects
661 using local handles, global names or, more recently, file descriptors.
662 All of those are 32-bit integer values; the usual Linux kernel limits
663 apply to the file descriptors.
664 </para>
665 <para>
666 GEM handles are local to a DRM file. Applications get a handle to a GEM
667 object through a driver-specific ioctl, and can use that handle to refer
668 to the GEM object in other standard or driver-specific ioctls. Closing a
669 DRM file handle frees all its GEM handles and dereferences the
670 associated GEM objects.
671 </para>
672 <para>
673 To create a handle for a GEM object drivers call
674 <function>drm_gem_handle_create</function>. The function takes a pointer
675 to the DRM file and the GEM object and returns a locally unique handle.
676 When the handle is no longer needed drivers delete it with a call to
677 <function>drm_gem_handle_delete</function>. Finally the GEM object
678 associated with a handle can be retrieved by a call to
679 <function>drm_gem_object_lookup</function>.
680 </para>
681 <para>
682 Handles don't take ownership of GEM objects, they only take a reference
683 to the object that will be dropped when the handle is destroyed. To
684 avoid leaking GEM objects, drivers must make sure they drop the
685 reference(s) they own (such as the initial reference taken at object
686 creation time) as appropriate, without any special consideration for the
687 handle. For example, in the particular case of combined GEM object and
688 handle creation in the implementation of the
689 <methodname>dumb_create</methodname> operation, drivers must drop the
690 initial reference to the GEM object before returning the handle.
691 </para>
692 <para>
693 GEM names are similar in purpose to handles but are not local to DRM
694 files. They can be passed between processes to reference a GEM object
695 globally. Names can't be used directly to refer to objects in the DRM
696 API, applications must convert handles to names and names to handles
697 using the DRM_IOCTL_GEM_FLINK and DRM_IOCTL_GEM_OPEN ioctls
698 respectively. The conversion is handled by the DRM core without any
699 driver-specific support.
700 </para>
701 <para>
702 Similar to global names, GEM file descriptors are also used to share GEM
703 objects across processes. They offer additional security: as file
704 descriptors must be explictly sent over UNIX domain sockets to be shared
705 between applications, they can't be guessed like the globally unique GEM
706 names.
707 </para>
708 <para>
709 Drivers that support GEM file descriptors, also known as the DRM PRIME
710 API, must set the DRIVER_PRIME bit in the struct
711 <structname>drm_driver</structname>
712 <structfield>driver_features</structfield> field, and implement the
713 <methodname>prime_handle_to_fd</methodname> and
714 <methodname>prime_fd_to_handle</methodname> operations.
715 </para>
716 <para>
717 <synopsis>int (*prime_handle_to_fd)(struct drm_device *dev,
718 struct drm_file *file_priv, uint32_t handle,
719 uint32_t flags, int *prime_fd);
720 int (*prime_fd_to_handle)(struct drm_device *dev,
721 struct drm_file *file_priv, int prime_fd,
722 uint32_t *handle);</synopsis>
723 Those two operations convert a handle to a PRIME file descriptor and
724 vice versa. Drivers must use the kernel dma-buf buffer sharing framework
725 to manage the PRIME file descriptors.
726 </para>
727 <para>
728 While non-GEM drivers must implement the operations themselves, GEM
729 drivers must use the <function>drm_gem_prime_handle_to_fd</function>
730 and <function>drm_gem_prime_fd_to_handle</function> helper functions.
731 Those helpers rely on the driver
732 <methodname>gem_prime_export</methodname> and
733 <methodname>gem_prime_import</methodname> operations to create a dma-buf
734 instance from a GEM object (dma-buf exporter role) and to create a GEM
735 object from a dma-buf instance (dma-buf importer role).
736 </para>
737 <para>
738 <synopsis>struct dma_buf * (*gem_prime_export)(struct drm_device *dev,
739 struct drm_gem_object *obj,
740 int flags);
741 struct drm_gem_object * (*gem_prime_import)(struct drm_device *dev,
742 struct dma_buf *dma_buf);</synopsis>
743 These two operations are mandatory for GEM drivers that support DRM
744 PRIME.
745 </para>
746 </sect3>
747 <sect3 id="drm-gem-objects-mapping">
748 <title>GEM Objects Mapping</title>
749 <para>
750 Because mapping operations are fairly heavyweight GEM favours
751 read/write-like access to buffers, implemented through driver-specific
752 ioctls, over mapping buffers to userspace. However, when random access
753 to the buffer is needed (to perform software rendering for instance),
754 direct access to the object can be more efficient.
755 </para>
756 <para>
757 The mmap system call can't be used directly to map GEM objects, as they
758 don't have their own file handle. Two alternative methods currently
759 co-exist to map GEM objects to userspace. The first method uses a
760 driver-specific ioctl to perform the mapping operation, calling
761 <function>do_mmap</function> under the hood. This is often considered
762 dubious, seems to be discouraged for new GEM-enabled drivers, and will
763 thus not be described here.
764 </para>
765 <para>
766 The second method uses the mmap system call on the DRM file handle.
767 <synopsis>void *mmap(void *addr, size_t length, int prot, int flags, int fd,
768 off_t offset);</synopsis>
769 DRM identifies the GEM object to be mapped by a fake offset passed
770 through the mmap offset argument. Prior to being mapped, a GEM object
771 must thus be associated with a fake offset. To do so, drivers must call
772 <function>drm_gem_create_mmap_offset</function> on the object. The
773 function allocates a fake offset range from a pool and stores the
774 offset divided by PAGE_SIZE in
775 <literal>obj-&gt;map_list.hash.key</literal>. Care must be taken not to
776 call <function>drm_gem_create_mmap_offset</function> if a fake offset
777 has already been allocated for the object. This can be tested by
778 <literal>obj-&gt;map_list.map</literal> being non-NULL.
779 </para>
780 <para>
781 Once allocated, the fake offset value
782 (<literal>obj-&gt;map_list.hash.key &lt;&lt; PAGE_SHIFT</literal>)
783 must be passed to the application in a driver-specific way and can then
784 be used as the mmap offset argument.
785 </para>
786 <para>
787 The GEM core provides a helper method <function>drm_gem_mmap</function>
788 to handle object mapping. The method can be set directly as the mmap
789 file operation handler. It will look up the GEM object based on the
790 offset value and set the VMA operations to the
791 <structname>drm_driver</structname> <structfield>gem_vm_ops</structfield>
792 field. Note that <function>drm_gem_mmap</function> doesn't map memory to
793 userspace, but relies on the driver-provided fault handler to map pages
794 individually.
795 </para>
796 <para>
797 To use <function>drm_gem_mmap</function>, drivers must fill the struct
798 <structname>drm_driver</structname> <structfield>gem_vm_ops</structfield>
799 field with a pointer to VM operations.
800 </para>
801 <para>
802 <synopsis>struct vm_operations_struct *gem_vm_ops
803
804 struct vm_operations_struct {
805 void (*open)(struct vm_area_struct * area);
806 void (*close)(struct vm_area_struct * area);
807 int (*fault)(struct vm_area_struct *vma, struct vm_fault *vmf);
808 };</synopsis>
809 </para>
810 <para>
811 The <methodname>open</methodname> and <methodname>close</methodname>
812 operations must update the GEM object reference count. Drivers can use
813 the <function>drm_gem_vm_open</function> and
814 <function>drm_gem_vm_close</function> helper functions directly as open
815 and close handlers.
816 </para>
817 <para>
818 The fault operation handler is responsible for mapping individual pages
819 to userspace when a page fault occurs. Depending on the memory
820 allocation scheme, drivers can allocate pages at fault time, or can
821 decide to allocate memory for the GEM object at the time the object is
822 created.
823 </para>
824 <para>
825 Drivers that want to map the GEM object upfront instead of handling page
826 faults can implement their own mmap file operation handler.
827 </para>
828 </sect3>
829 <sect3>
830 <title>Dumb GEM Objects</title>
831 <para>
832 The GEM API doesn't standardize GEM objects creation and leaves it to
833 driver-specific ioctls. While not an issue for full-fledged graphics
834 stacks that include device-specific userspace components (in libdrm for
835 instance), this limit makes DRM-based early boot graphics unnecessarily
836 complex.
837 </para>
838 <para>
839 Dumb GEM objects partly alleviate the problem by providing a standard
840 API to create dumb buffers suitable for scanout, which can then be used
841 to create KMS frame buffers.
842 </para>
843 <para>
844 To support dumb GEM objects drivers must implement the
845 <methodname>dumb_create</methodname>,
846 <methodname>dumb_destroy</methodname> and
847 <methodname>dumb_map_offset</methodname> operations.
848 </para>
849 <itemizedlist>
850 <listitem>
851 <synopsis>int (*dumb_create)(struct drm_file *file_priv, struct drm_device *dev,
852 struct drm_mode_create_dumb *args);</synopsis>
853 <para>
854 The <methodname>dumb_create</methodname> operation creates a GEM
855 object suitable for scanout based on the width, height and depth
856 from the struct <structname>drm_mode_create_dumb</structname>
857 argument. It fills the argument's <structfield>handle</structfield>,
858 <structfield>pitch</structfield> and <structfield>size</structfield>
859 fields with a handle for the newly created GEM object and its line
860 pitch and size in bytes.
861 </para>
862 </listitem>
863 <listitem>
864 <synopsis>int (*dumb_destroy)(struct drm_file *file_priv, struct drm_device *dev,
865 uint32_t handle);</synopsis>
866 <para>
867 The <methodname>dumb_destroy</methodname> operation destroys a dumb
868 GEM object created by <methodname>dumb_create</methodname>.
869 </para>
870 </listitem>
871 <listitem>
872 <synopsis>int (*dumb_map_offset)(struct drm_file *file_priv, struct drm_device *dev,
873 uint32_t handle, uint64_t *offset);</synopsis>
874 <para>
875 The <methodname>dumb_map_offset</methodname> operation associates an
876 mmap fake offset with the GEM object given by the handle and returns
877 it. Drivers must use the
878 <function>drm_gem_create_mmap_offset</function> function to
879 associate the fake offset as described in
880 <xref linkend="drm-gem-objects-mapping"/>.
881 </para>
882 </listitem>
883 </itemizedlist>
884 </sect3>
885 <sect3>
886 <title>Memory Coherency</title>
887 <para>
888 When mapped to the device or used in a command buffer, backing pages
889 for an object are flushed to memory and marked write combined so as to
890 be coherent with the GPU. Likewise, if the CPU accesses an object
891 after the GPU has finished rendering to the object, then the object
892 must be made coherent with the CPU's view of memory, usually involving
893 GPU cache flushing of various kinds. This core CPU&lt;-&gt;GPU
894 coherency management is provided by a device-specific ioctl, which
895 evaluates an object's current domain and performs any necessary
896 flushing or synchronization to put the object into the desired
897 coherency domain (note that the object may be busy, i.e. an active
898 render target; in that case, setting the domain blocks the client and
899 waits for rendering to complete before performing any necessary
900 flushing operations).
901 </para>
902 </sect3>
903 <sect3>
904 <title>Command Execution</title>
905 <para>
906 Perhaps the most important GEM function for GPU devices is providing a
907 command execution interface to clients. Client programs construct
908 command buffers containing references to previously allocated memory
909 objects, and then submit them to GEM. At that point, GEM takes care to
910 bind all the objects into the GTT, execute the buffer, and provide
911 necessary synchronization between clients accessing the same buffers.
912 This often involves evicting some objects from the GTT and re-binding
913 others (a fairly expensive operation), and providing relocation
914 support which hides fixed GTT offsets from clients. Clients must take
915 care not to submit command buffers that reference more objects than
916 can fit in the GTT; otherwise, GEM will reject them and no rendering
917 will occur. Similarly, if several objects in the buffer require fence
918 registers to be allocated for correct rendering (e.g. 2D blits on
919 pre-965 chips), care must be taken not to require more fence registers
920 than are available to the client. Such resource management should be
921 abstracted from the client in libdrm.
922 </para>
487 </sect3> 923 </sect3>
488 </sect2> 924 </sect2>
925 </sect1>
926
927 <!-- Internals: mode setting -->
489 928
929 <sect1 id="drm-mode-setting">
930 <title>Mode Setting</title>
931 <para>
932 Drivers must initialize the mode setting core by calling
933 <function>drm_mode_config_init</function> on the DRM device. The function
934 initializes the <structname>drm_device</structname>
935 <structfield>mode_config</structfield> field and never fails. Once done,
936 mode configuration must be setup by initializing the following fields.
937 </para>
938 <itemizedlist>
939 <listitem>
940 <synopsis>int min_width, min_height;
941int max_width, max_height;</synopsis>
942 <para>
943 Minimum and maximum width and height of the frame buffers in pixel
944 units.
945 </para>
946 </listitem>
947 <listitem>
948 <synopsis>struct drm_mode_config_funcs *funcs;</synopsis>
949 <para>Mode setting functions.</para>
950 </listitem>
951 </itemizedlist>
490 <sect2> 952 <sect2>
491 <title>Output configuration</title> 953 <title>Frame Buffer Creation</title>
954 <synopsis>struct drm_framebuffer *(*fb_create)(struct drm_device *dev,
955 struct drm_file *file_priv,
956 struct drm_mode_fb_cmd2 *mode_cmd);</synopsis>
492 <para> 957 <para>
493 The final initialization task is output configuration. This involves: 958 Frame buffers are abstract memory objects that provide a source of
494 <itemizedlist> 959 pixels to scanout to a CRTC. Applications explicitly request the
495 <listitem> 960 creation of frame buffers through the DRM_IOCTL_MODE_ADDFB(2) ioctls and
496 Finding and initializing the CRTCs, encoders, and connectors 961 receive an opaque handle that can be passed to the KMS CRTC control,
497 for the device. 962 plane configuration and page flip functions.
498 </listitem> 963 </para>
499 <listitem> 964 <para>
500 Creating an initial configuration. 965 Frame buffers rely on the underneath memory manager for low-level memory
501 </listitem> 966 operations. When creating a frame buffer applications pass a memory
502 <listitem> 967 handle (or a list of memory handles for multi-planar formats) through
503 Registering a framebuffer console driver. 968 the <parameter>drm_mode_fb_cmd2</parameter> argument. This document
504 </listitem> 969 assumes that the driver uses GEM, those handles thus reference GEM
505 </itemizedlist> 970 objects.
971 </para>
972 <para>
973 Drivers must first validate the requested frame buffer parameters passed
974 through the mode_cmd argument. In particular this is where invalid
975 sizes, pixel formats or pitches can be caught.
976 </para>
977 <para>
978 If the parameters are deemed valid, drivers then create, initialize and
979 return an instance of struct <structname>drm_framebuffer</structname>.
980 If desired the instance can be embedded in a larger driver-specific
981 structure. The new instance is initialized with a call to
982 <function>drm_framebuffer_init</function> which takes a pointer to DRM
983 frame buffer operations (struct
984 <structname>drm_framebuffer_funcs</structname>). Frame buffer operations are
985 <itemizedlist>
986 <listitem>
987 <synopsis>int (*create_handle)(struct drm_framebuffer *fb,
988 struct drm_file *file_priv, unsigned int *handle);</synopsis>
989 <para>
990 Create a handle to the frame buffer underlying memory object. If
991 the frame buffer uses a multi-plane format, the handle will
992 reference the memory object associated with the first plane.
993 </para>
994 <para>
995 Drivers call <function>drm_gem_handle_create</function> to create
996 the handle.
997 </para>
998 </listitem>
999 <listitem>
1000 <synopsis>void (*destroy)(struct drm_framebuffer *framebuffer);</synopsis>
1001 <para>
1002 Destroy the frame buffer object and frees all associated
1003 resources. Drivers must call
1004 <function>drm_framebuffer_cleanup</function> to free resources
1005 allocated by the DRM core for the frame buffer object, and must
1006 make sure to unreference all memory objects associated with the
1007 frame buffer. Handles created by the
1008 <methodname>create_handle</methodname> operation are released by
1009 the DRM core.
1010 </para>
1011 </listitem>
1012 <listitem>
1013 <synopsis>int (*dirty)(struct drm_framebuffer *framebuffer,
1014 struct drm_file *file_priv, unsigned flags, unsigned color,
1015 struct drm_clip_rect *clips, unsigned num_clips);</synopsis>
1016 <para>
1017 This optional operation notifies the driver that a region of the
1018 frame buffer has changed in response to a DRM_IOCTL_MODE_DIRTYFB
1019 ioctl call.
1020 </para>
1021 </listitem>
1022 </itemizedlist>
1023 </para>
1024 <para>
1025 After initializing the <structname>drm_framebuffer</structname>
1026 instance drivers must fill its <structfield>width</structfield>,
1027 <structfield>height</structfield>, <structfield>pitches</structfield>,
1028 <structfield>offsets</structfield>, <structfield>depth</structfield>,
1029 <structfield>bits_per_pixel</structfield> and
1030 <structfield>pixel_format</structfield> fields from the values passed
1031 through the <parameter>drm_mode_fb_cmd2</parameter> argument. They
1032 should call the <function>drm_helper_mode_fill_fb_struct</function>
1033 helper function to do so.
1034 </para>
1035 </sect2>
1036 <sect2>
1037 <title>Output Polling</title>
1038 <synopsis>void (*output_poll_changed)(struct drm_device *dev);</synopsis>
1039 <para>
1040 This operation notifies the driver that the status of one or more
1041 connectors has changed. Drivers that use the fb helper can just call the
1042 <function>drm_fb_helper_hotplug_event</function> function to handle this
1043 operation.
1044 </para>
1045 </sect2>
1046 </sect1>
1047
1048 <!-- Internals: kms initialization and cleanup -->
1049
1050 <sect1 id="drm-kms-init">
1051 <title>KMS Initialization and Cleanup</title>
1052 <para>
1053 A KMS device is abstracted and exposed as a set of planes, CRTCs, encoders
1054 and connectors. KMS drivers must thus create and initialize all those
1055 objects at load time after initializing mode setting.
1056 </para>
1057 <sect2>
1058 <title>CRTCs (struct <structname>drm_crtc</structname>)</title>
1059 <para>
1060 A CRTC is an abstraction representing a part of the chip that contains a
1061 pointer to a scanout buffer. Therefore, the number of CRTCs available
1062 determines how many independent scanout buffers can be active at any
1063 given time. The CRTC structure contains several fields to support this:
1064 a pointer to some video memory (abstracted as a frame buffer object), a
1065 display mode, and an (x, y) offset into the video memory to support
1066 panning or configurations where one piece of video memory spans multiple
1067 CRTCs.
506 </para> 1068 </para>
507 <sect3> 1069 <sect3>
508 <title>Output discovery and initialization</title> 1070 <title>CRTC Initialization</title>
509 <para> 1071 <para>
510 Several core functions exist to create CRTCs, encoders, and 1072 A KMS device must create and register at least one struct
511 connectors, namely: drm_crtc_init(), drm_connector_init(), and 1073 <structname>drm_crtc</structname> instance. The instance is allocated
512 drm_encoder_init(), along with several "helper" functions to 1074 and zeroed by the driver, possibly as part of a larger structure, and
513 perform common tasks. 1075 registered with a call to <function>drm_crtc_init</function> with a
514 </para> 1076 pointer to CRTC functions.
515 <para> 1077 </para>
516 Connectors should be registered with sysfs once they've been 1078 </sect3>
517 detected and initialized, using the 1079 <sect3>
518 drm_sysfs_connector_add() function. Likewise, when they're 1080 <title>CRTC Operations</title>
519 removed from the system, they should be destroyed with 1081 <sect4>
520 drm_sysfs_connector_remove(). 1082 <title>Set Configuration</title>
521 </para> 1083 <synopsis>int (*set_config)(struct drm_mode_set *set);</synopsis>
522 <programlisting> 1084 <para>
523<![CDATA[ 1085 Apply a new CRTC configuration to the device. The configuration
1086 specifies a CRTC, a frame buffer to scan out from, a (x,y) position in
1087 the frame buffer, a display mode and an array of connectors to drive
1088 with the CRTC if possible.
1089 </para>
1090 <para>
1091 If the frame buffer specified in the configuration is NULL, the driver
1092 must detach all encoders connected to the CRTC and all connectors
1093 attached to those encoders and disable them.
1094 </para>
1095 <para>
1096 This operation is called with the mode config lock held.
1097 </para>
1098 <note><para>
1099 FIXME: How should set_config interact with DPMS? If the CRTC is
1100 suspended, should it be resumed?
1101 </para></note>
1102 </sect4>
1103 <sect4>
1104 <title>Page Flipping</title>
1105 <synopsis>int (*page_flip)(struct drm_crtc *crtc, struct drm_framebuffer *fb,
1106 struct drm_pending_vblank_event *event);</synopsis>
1107 <para>
1108 Schedule a page flip to the given frame buffer for the CRTC. This
1109 operation is called with the mode config mutex held.
1110 </para>
1111 <para>
1112 Page flipping is a synchronization mechanism that replaces the frame
1113 buffer being scanned out by the CRTC with a new frame buffer during
1114 vertical blanking, avoiding tearing. When an application requests a page
1115 flip the DRM core verifies that the new frame buffer is large enough to
1116 be scanned out by the CRTC in the currently configured mode and then
1117 calls the CRTC <methodname>page_flip</methodname> operation with a
1118 pointer to the new frame buffer.
1119 </para>
1120 <para>
1121 The <methodname>page_flip</methodname> operation schedules a page flip.
1122 Once any pending rendering targetting the new frame buffer has
1123 completed, the CRTC will be reprogrammed to display that frame buffer
1124 after the next vertical refresh. The operation must return immediately
1125 without waiting for rendering or page flip to complete and must block
1126 any new rendering to the frame buffer until the page flip completes.
1127 </para>
1128 <para>
1129 If a page flip is already pending, the
1130 <methodname>page_flip</methodname> operation must return
1131 -<errorname>EBUSY</errorname>.
1132 </para>
1133 <para>
1134 To synchronize page flip to vertical blanking the driver will likely
1135 need to enable vertical blanking interrupts. It should call
1136 <function>drm_vblank_get</function> for that purpose, and call
1137 <function>drm_vblank_put</function> after the page flip completes.
1138 </para>
1139 <para>
1140 If the application has requested to be notified when page flip completes
1141 the <methodname>page_flip</methodname> operation will be called with a
1142 non-NULL <parameter>event</parameter> argument pointing to a
1143 <structname>drm_pending_vblank_event</structname> instance. Upon page
1144 flip completion the driver must fill the
1145 <parameter>event</parameter>::<structfield>event</structfield>
1146 <structfield>sequence</structfield>, <structfield>tv_sec</structfield>
1147 and <structfield>tv_usec</structfield> fields with the associated
1148 vertical blanking count and timestamp, add the event to the
1149 <parameter>drm_file</parameter> list of events to be signaled, and wake
1150 up any waiting process. This can be performed with
1151 <programlisting><![CDATA[
1152 struct timeval now;
1153
1154 event->event.sequence = drm_vblank_count_and_time(..., &now);
1155 event->event.tv_sec = now.tv_sec;
1156 event->event.tv_usec = now.tv_usec;
1157
1158 spin_lock_irqsave(&dev->event_lock, flags);
1159 list_add_tail(&event->base.link, &event->base.file_priv->event_list);
1160 wake_up_interruptible(&event->base.file_priv->event_wait);
1161 spin_unlock_irqrestore(&dev->event_lock, flags);
1162 ]]></programlisting>
1163 </para>
1164 <note><para>
1165 FIXME: Could drivers that don't need to wait for rendering to complete
1166 just add the event to <literal>dev-&gt;vblank_event_list</literal> and
1167 let the DRM core handle everything, as for "normal" vertical blanking
1168 events?
1169 </para></note>
1170 <para>
1171 While waiting for the page flip to complete, the
1172 <literal>event-&gt;base.link</literal> list head can be used freely by
1173 the driver to store the pending event in a driver-specific list.
1174 </para>
1175 <para>
1176 If the file handle is closed before the event is signaled, drivers must
1177 take care to destroy the event in their
1178 <methodname>preclose</methodname> operation (and, if needed, call
1179 <function>drm_vblank_put</function>).
1180 </para>
1181 </sect4>
1182 <sect4>
1183 <title>Miscellaneous</title>
1184 <itemizedlist>
1185 <listitem>
1186 <synopsis>void (*gamma_set)(struct drm_crtc *crtc, u16 *r, u16 *g, u16 *b,
1187 uint32_t start, uint32_t size);</synopsis>
1188 <para>
1189 Apply a gamma table to the device. The operation is optional.
1190 </para>
1191 </listitem>
1192 <listitem>
1193 <synopsis>void (*destroy)(struct drm_crtc *crtc);</synopsis>
1194 <para>
1195 Destroy the CRTC when not needed anymore. See
1196 <xref linkend="drm-kms-init"/>.
1197 </para>
1198 </listitem>
1199 </itemizedlist>
1200 </sect4>
1201 </sect3>
1202 </sect2>
1203 <sect2>
1204 <title>Planes (struct <structname>drm_plane</structname>)</title>
1205 <para>
1206 A plane represents an image source that can be blended with or overlayed
1207 on top of a CRTC during the scanout process. Planes are associated with
1208 a frame buffer to crop a portion of the image memory (source) and
1209 optionally scale it to a destination size. The result is then blended
1210 with or overlayed on top of a CRTC.
1211 </para>
1212 <sect3>
1213 <title>Plane Initialization</title>
1214 <para>
1215 Planes are optional. To create a plane, a KMS drivers allocates and
1216 zeroes an instances of struct <structname>drm_plane</structname>
1217 (possibly as part of a larger structure) and registers it with a call
1218 to <function>drm_plane_init</function>. The function takes a bitmask
1219 of the CRTCs that can be associated with the plane, a pointer to the
1220 plane functions and a list of format supported formats.
1221 </para>
1222 </sect3>
1223 <sect3>
1224 <title>Plane Operations</title>
1225 <itemizedlist>
1226 <listitem>
1227 <synopsis>int (*update_plane)(struct drm_plane *plane, struct drm_crtc *crtc,
1228 struct drm_framebuffer *fb, int crtc_x, int crtc_y,
1229 unsigned int crtc_w, unsigned int crtc_h,
1230 uint32_t src_x, uint32_t src_y,
1231 uint32_t src_w, uint32_t src_h);</synopsis>
1232 <para>
1233 Enable and configure the plane to use the given CRTC and frame buffer.
1234 </para>
1235 <para>
1236 The source rectangle in frame buffer memory coordinates is given by
1237 the <parameter>src_x</parameter>, <parameter>src_y</parameter>,
1238 <parameter>src_w</parameter> and <parameter>src_h</parameter>
1239 parameters (as 16.16 fixed point values). Devices that don't support
1240 subpixel plane coordinates can ignore the fractional part.
1241 </para>
1242 <para>
1243 The destination rectangle in CRTC coordinates is given by the
1244 <parameter>crtc_x</parameter>, <parameter>crtc_y</parameter>,
1245 <parameter>crtc_w</parameter> and <parameter>crtc_h</parameter>
1246 parameters (as integer values). Devices scale the source rectangle to
1247 the destination rectangle. If scaling is not supported, and the source
1248 rectangle size doesn't match the destination rectangle size, the
1249 driver must return a -<errorname>EINVAL</errorname> error.
1250 </para>
1251 </listitem>
1252 <listitem>
1253 <synopsis>int (*disable_plane)(struct drm_plane *plane);</synopsis>
1254 <para>
1255 Disable the plane. The DRM core calls this method in response to a
1256 DRM_IOCTL_MODE_SETPLANE ioctl call with the frame buffer ID set to 0.
1257 Disabled planes must not be processed by the CRTC.
1258 </para>
1259 </listitem>
1260 <listitem>
1261 <synopsis>void (*destroy)(struct drm_plane *plane);</synopsis>
1262 <para>
1263 Destroy the plane when not needed anymore. See
1264 <xref linkend="drm-kms-init"/>.
1265 </para>
1266 </listitem>
1267 </itemizedlist>
1268 </sect3>
1269 </sect2>
1270 <sect2>
1271 <title>Encoders (struct <structname>drm_encoder</structname>)</title>
1272 <para>
1273 An encoder takes pixel data from a CRTC and converts it to a format
1274 suitable for any attached connectors. On some devices, it may be
1275 possible to have a CRTC send data to more than one encoder. In that
1276 case, both encoders would receive data from the same scanout buffer,
1277 resulting in a "cloned" display configuration across the connectors
1278 attached to each encoder.
1279 </para>
1280 <sect3>
1281 <title>Encoder Initialization</title>
1282 <para>
1283 As for CRTCs, a KMS driver must create, initialize and register at
1284 least one struct <structname>drm_encoder</structname> instance. The
1285 instance is allocated and zeroed by the driver, possibly as part of a
1286 larger structure.
1287 </para>
1288 <para>
1289 Drivers must initialize the struct <structname>drm_encoder</structname>
1290 <structfield>possible_crtcs</structfield> and
1291 <structfield>possible_clones</structfield> fields before registering the
1292 encoder. Both fields are bitmasks of respectively the CRTCs that the
1293 encoder can be connected to, and sibling encoders candidate for cloning.
1294 </para>
1295 <para>
1296 After being initialized, the encoder must be registered with a call to
1297 <function>drm_encoder_init</function>. The function takes a pointer to
1298 the encoder functions and an encoder type. Supported types are
1299 <itemizedlist>
1300 <listitem>
1301 DRM_MODE_ENCODER_DAC for VGA and analog on DVI-I/DVI-A
1302 </listitem>
1303 <listitem>
1304 DRM_MODE_ENCODER_TMDS for DVI, HDMI and (embedded) DisplayPort
1305 </listitem>
1306 <listitem>
1307 DRM_MODE_ENCODER_LVDS for display panels
1308 </listitem>
1309 <listitem>
1310 DRM_MODE_ENCODER_TVDAC for TV output (Composite, S-Video, Component,
1311 SCART)
1312 </listitem>
1313 <listitem>
1314 DRM_MODE_ENCODER_VIRTUAL for virtual machine displays
1315 </listitem>
1316 </itemizedlist>
1317 </para>
1318 <para>
1319 Encoders must be attached to a CRTC to be used. DRM drivers leave
1320 encoders unattached at initialization time. Applications (or the fbdev
1321 compatibility layer when implemented) are responsible for attaching the
1322 encoders they want to use to a CRTC.
1323 </para>
1324 </sect3>
1325 <sect3>
1326 <title>Encoder Operations</title>
1327 <itemizedlist>
1328 <listitem>
1329 <synopsis>void (*destroy)(struct drm_encoder *encoder);</synopsis>
1330 <para>
1331 Called to destroy the encoder when not needed anymore. See
1332 <xref linkend="drm-kms-init"/>.
1333 </para>
1334 </listitem>
1335 </itemizedlist>
1336 </sect3>
1337 </sect2>
1338 <sect2>
1339 <title>Connectors (struct <structname>drm_connector</structname>)</title>
1340 <para>
1341 A connector is the final destination for pixel data on a device, and
1342 usually connects directly to an external display device like a monitor
1343 or laptop panel. A connector can only be attached to one encoder at a
1344 time. The connector is also the structure where information about the
1345 attached display is kept, so it contains fields for display data, EDID
1346 data, DPMS &amp; connection status, and information about modes
1347 supported on the attached displays.
1348 </para>
1349 <sect3>
1350 <title>Connector Initialization</title>
1351 <para>
1352 Finally a KMS driver must create, initialize, register and attach at
1353 least one struct <structname>drm_connector</structname> instance. The
1354 instance is created as other KMS objects and initialized by setting the
1355 following fields.
1356 </para>
1357 <variablelist>
1358 <varlistentry>
1359 <term><structfield>interlace_allowed</structfield></term>
1360 <listitem><para>
1361 Whether the connector can handle interlaced modes.
1362 </para></listitem>
1363 </varlistentry>
1364 <varlistentry>
1365 <term><structfield>doublescan_allowed</structfield></term>
1366 <listitem><para>
1367 Whether the connector can handle doublescan.
1368 </para></listitem>
1369 </varlistentry>
1370 <varlistentry>
1371 <term><structfield>display_info
1372 </structfield></term>
1373 <listitem><para>
1374 Display information is filled from EDID information when a display
1375 is detected. For non hot-pluggable displays such as flat panels in
1376 embedded systems, the driver should initialize the
1377 <structfield>display_info</structfield>.<structfield>width_mm</structfield>
1378 and
1379 <structfield>display_info</structfield>.<structfield>height_mm</structfield>
1380 fields with the physical size of the display.
1381 </para></listitem>
1382 </varlistentry>
1383 <varlistentry>
1384 <term id="drm-kms-connector-polled"><structfield>polled</structfield></term>
1385 <listitem><para>
1386 Connector polling mode, a combination of
1387 <variablelist>
1388 <varlistentry>
1389 <term>DRM_CONNECTOR_POLL_HPD</term>
1390 <listitem><para>
1391 The connector generates hotplug events and doesn't need to be
1392 periodically polled. The CONNECT and DISCONNECT flags must not
1393 be set together with the HPD flag.
1394 </para></listitem>
1395 </varlistentry>
1396 <varlistentry>
1397 <term>DRM_CONNECTOR_POLL_CONNECT</term>
1398 <listitem><para>
1399 Periodically poll the connector for connection.
1400 </para></listitem>
1401 </varlistentry>
1402 <varlistentry>
1403 <term>DRM_CONNECTOR_POLL_DISCONNECT</term>
1404 <listitem><para>
1405 Periodically poll the connector for disconnection.
1406 </para></listitem>
1407 </varlistentry>
1408 </variablelist>
1409 Set to 0 for connectors that don't support connection status
1410 discovery.
1411 </para></listitem>
1412 </varlistentry>
1413 </variablelist>
1414 <para>
1415 The connector is then registered with a call to
1416 <function>drm_connector_init</function> with a pointer to the connector
1417 functions and a connector type, and exposed through sysfs with a call to
1418 <function>drm_sysfs_connector_add</function>.
1419 </para>
1420 <para>
1421 Supported connector types are
1422 <itemizedlist>
1423 <listitem>DRM_MODE_CONNECTOR_VGA</listitem>
1424 <listitem>DRM_MODE_CONNECTOR_DVII</listitem>
1425 <listitem>DRM_MODE_CONNECTOR_DVID</listitem>
1426 <listitem>DRM_MODE_CONNECTOR_DVIA</listitem>
1427 <listitem>DRM_MODE_CONNECTOR_Composite</listitem>
1428 <listitem>DRM_MODE_CONNECTOR_SVIDEO</listitem>
1429 <listitem>DRM_MODE_CONNECTOR_LVDS</listitem>
1430 <listitem>DRM_MODE_CONNECTOR_Component</listitem>
1431 <listitem>DRM_MODE_CONNECTOR_9PinDIN</listitem>
1432 <listitem>DRM_MODE_CONNECTOR_DisplayPort</listitem>
1433 <listitem>DRM_MODE_CONNECTOR_HDMIA</listitem>
1434 <listitem>DRM_MODE_CONNECTOR_HDMIB</listitem>
1435 <listitem>DRM_MODE_CONNECTOR_TV</listitem>
1436 <listitem>DRM_MODE_CONNECTOR_eDP</listitem>
1437 <listitem>DRM_MODE_CONNECTOR_VIRTUAL</listitem>
1438 </itemizedlist>
1439 </para>
1440 <para>
1441 Connectors must be attached to an encoder to be used. For devices that
1442 map connectors to encoders 1:1, the connector should be attached at
1443 initialization time with a call to
1444 <function>drm_mode_connector_attach_encoder</function>. The driver must
1445 also set the <structname>drm_connector</structname>
1446 <structfield>encoder</structfield> field to point to the attached
1447 encoder.
1448 </para>
1449 <para>
1450 Finally, drivers must initialize the connectors state change detection
1451 with a call to <function>drm_kms_helper_poll_init</function>. If at
1452 least one connector is pollable but can't generate hotplug interrupts
1453 (indicated by the DRM_CONNECTOR_POLL_CONNECT and
1454 DRM_CONNECTOR_POLL_DISCONNECT connector flags), a delayed work will
1455 automatically be queued to periodically poll for changes. Connectors
1456 that can generate hotplug interrupts must be marked with the
1457 DRM_CONNECTOR_POLL_HPD flag instead, and their interrupt handler must
1458 call <function>drm_helper_hpd_irq_event</function>. The function will
1459 queue a delayed work to check the state of all connectors, but no
1460 periodic polling will be done.
1461 </para>
1462 </sect3>
1463 <sect3>
1464 <title>Connector Operations</title>
1465 <note><para>
1466 Unless otherwise state, all operations are mandatory.
1467 </para></note>
1468 <sect4>
1469 <title>DPMS</title>
1470 <synopsis>void (*dpms)(struct drm_connector *connector, int mode);</synopsis>
1471 <para>
1472 The DPMS operation sets the power state of a connector. The mode
1473 argument is one of
1474 <itemizedlist>
1475 <listitem><para>DRM_MODE_DPMS_ON</para></listitem>
1476 <listitem><para>DRM_MODE_DPMS_STANDBY</para></listitem>
1477 <listitem><para>DRM_MODE_DPMS_SUSPEND</para></listitem>
1478 <listitem><para>DRM_MODE_DPMS_OFF</para></listitem>
1479 </itemizedlist>
1480 </para>
1481 <para>
1482 In all but DPMS_ON mode the encoder to which the connector is attached
1483 should put the display in low-power mode by driving its signals
1484 appropriately. If more than one connector is attached to the encoder
1485 care should be taken not to change the power state of other displays as
1486 a side effect. Low-power mode should be propagated to the encoders and
1487 CRTCs when all related connectors are put in low-power mode.
1488 </para>
1489 </sect4>
1490 <sect4>
1491 <title>Modes</title>
1492 <synopsis>int (*fill_modes)(struct drm_connector *connector, uint32_t max_width,
1493 uint32_t max_height);</synopsis>
1494 <para>
1495 Fill the mode list with all supported modes for the connector. If the
1496 <parameter>max_width</parameter> and <parameter>max_height</parameter>
1497 arguments are non-zero, the implementation must ignore all modes wider
1498 than <parameter>max_width</parameter> or higher than
1499 <parameter>max_height</parameter>.
1500 </para>
1501 <para>
1502 The connector must also fill in this operation its
1503 <structfield>display_info</structfield>
1504 <structfield>width_mm</structfield> and
1505 <structfield>height_mm</structfield> fields with the connected display
1506 physical size in millimeters. The fields should be set to 0 if the value
1507 isn't known or is not applicable (for instance for projector devices).
1508 </para>
1509 </sect4>
1510 <sect4>
1511 <title>Connection Status</title>
1512 <para>
1513 The connection status is updated through polling or hotplug events when
1514 supported (see <xref linkend="drm-kms-connector-polled"/>). The status
1515 value is reported to userspace through ioctls and must not be used
1516 inside the driver, as it only gets initialized by a call to
1517 <function>drm_mode_getconnector</function> from userspace.
1518 </para>
1519 <synopsis>enum drm_connector_status (*detect)(struct drm_connector *connector,
1520 bool force);</synopsis>
1521 <para>
1522 Check to see if anything is attached to the connector. The
1523 <parameter>force</parameter> parameter is set to false whilst polling or
1524 to true when checking the connector due to user request.
1525 <parameter>force</parameter> can be used by the driver to avoid
1526 expensive, destructive operations during automated probing.
1527 </para>
1528 <para>
1529 Return connector_status_connected if something is connected to the
1530 connector, connector_status_disconnected if nothing is connected and
1531 connector_status_unknown if the connection state isn't known.
1532 </para>
1533 <para>
1534 Drivers should only return connector_status_connected if the connection
1535 status has really been probed as connected. Connectors that can't detect
1536 the connection status, or failed connection status probes, should return
1537 connector_status_unknown.
1538 </para>
1539 </sect4>
1540 <sect4>
1541 <title>Miscellaneous</title>
1542 <itemizedlist>
1543 <listitem>
1544 <synopsis>void (*destroy)(struct drm_connector *connector);</synopsis>
1545 <para>
1546 Destroy the connector when not needed anymore. See
1547 <xref linkend="drm-kms-init"/>.
1548 </para>
1549 </listitem>
1550 </itemizedlist>
1551 </sect4>
1552 </sect3>
1553 </sect2>
1554 <sect2>
1555 <title>Cleanup</title>
1556 <para>
1557 The DRM core manages its objects' lifetime. When an object is not needed
1558 anymore the core calls its destroy function, which must clean up and
1559 free every resource allocated for the object. Every
1560 <function>drm_*_init</function> call must be matched with a
1561 corresponding <function>drm_*_cleanup</function> call to cleanup CRTCs
1562 (<function>drm_crtc_cleanup</function>), planes
1563 (<function>drm_plane_cleanup</function>), encoders
1564 (<function>drm_encoder_cleanup</function>) and connectors
1565 (<function>drm_connector_cleanup</function>). Furthermore, connectors
1566 that have been added to sysfs must be removed by a call to
1567 <function>drm_sysfs_connector_remove</function> before calling
1568 <function>drm_connector_cleanup</function>.
1569 </para>
1570 <para>
1571 Connectors state change detection must be cleanup up with a call to
1572 <function>drm_kms_helper_poll_fini</function>.
1573 </para>
1574 </sect2>
1575 <sect2>
1576 <title>Output discovery and initialization example</title>
1577 <programlisting><![CDATA[
524void intel_crt_init(struct drm_device *dev) 1578void intel_crt_init(struct drm_device *dev)
525{ 1579{
526 struct drm_connector *connector; 1580 struct drm_connector *connector;
@@ -556,252 +1610,741 @@ void intel_crt_init(struct drm_device *dev)
556 drm_connector_helper_add(connector, &intel_crt_connector_helper_funcs); 1610 drm_connector_helper_add(connector, &intel_crt_connector_helper_funcs);
557 1611
558 drm_sysfs_connector_add(connector); 1612 drm_sysfs_connector_add(connector);
559} 1613}]]></programlisting>
560]]> 1614 <para>
561 </programlisting> 1615 In the example above (taken from the i915 driver), a CRTC, connector and
562 <para> 1616 encoder combination is created. A device-specific i2c bus is also
563 In the example above (again, taken from the i915 driver), a 1617 created for fetching EDID data and performing monitor detection. Once
564 CRT connector and encoder combination is created. A device-specific 1618 the process is complete, the new connector is registered with sysfs to
565 i2c bus is also created for fetching EDID data and 1619 make its properties available to applications.
566 performing monitor detection. Once the process is complete, 1620 </para>
567 the new connector is registered with sysfs to make its
568 properties available to applications.
569 </para>
570 <sect4>
571 <title>Helper functions and core functions</title>
572 <para>
573 Since many PC-class graphics devices have similar display output
574 designs, the DRM provides a set of helper functions to make
575 output management easier. The core helper routines handle
576 encoder re-routing and the disabling of unused functions following
577 mode setting. Using the helpers is optional, but recommended for
578 devices with PC-style architectures (i.e. a set of display planes
579 for feeding pixels to encoders which are in turn routed to
580 connectors). Devices with more complex requirements needing
581 finer grained management may opt to use the core callbacks
582 directly.
583 </para>
584 <para>
585 [Insert typical diagram here.] [Insert OMAP style config here.]
586 </para>
587 </sect4>
588 <para>
589 Each encoder object needs to provide:
590 <itemizedlist>
591 <listitem>
592 A DPMS (basically on/off) function.
593 </listitem>
594 <listitem>
595 A mode-fixup function (for converting requested modes into
596 native hardware timings).
597 </listitem>
598 <listitem>
599 Functions (prepare, set, and commit) for use by the core DRM
600 helper functions.
601 </listitem>
602 </itemizedlist>
603 Connector helpers need to provide functions (mode-fetch, validity,
604 and encoder-matching) for returning an ideal encoder for a given
605 connector. The core connector functions include a DPMS callback,
606 save/restore routines (deprecated), detection, mode probing,
607 property handling, and cleanup functions.
608 </para>
609<!--!Edrivers/char/drm/drm_crtc.h-->
610<!--!Edrivers/char/drm/drm_crtc.c-->
611<!--!Edrivers/char/drm/drm_crtc_helper.c-->
612 </sect3>
613 </sect2> 1621 </sect2>
614 </sect1> 1622 </sect1>
615 1623
616 <!-- Internals: vblank handling --> 1624 <!-- Internals: mid-layer helper functions -->
617 1625
618 <sect1> 1626 <sect1>
619 <title>VBlank event handling</title> 1627 <title>Mid-layer Helper Functions</title>
620 <para> 1628 <para>
621 The DRM core exposes two vertical blank related ioctls: 1629 The CRTC, encoder and connector functions provided by the drivers
622 <variablelist> 1630 implement the DRM API. They're called by the DRM core and ioctl handlers
623 <varlistentry> 1631 to handle device state changes and configuration request. As implementing
624 <term>DRM_IOCTL_WAIT_VBLANK</term> 1632 those functions often requires logic not specific to drivers, mid-layer
625 <listitem> 1633 helper functions are available to avoid duplicating boilerplate code.
626 <para> 1634 </para>
627 This takes a struct drm_wait_vblank structure as its argument, 1635 <para>
628 and it is used to block or request a signal when a specified 1636 The DRM core contains one mid-layer implementation. The mid-layer provides
629 vblank event occurs. 1637 implementations of several CRTC, encoder and connector functions (called
630 </para> 1638 from the top of the mid-layer) that pre-process requests and call
631 </listitem> 1639 lower-level functions provided by the driver (at the bottom of the
632 </varlistentry> 1640 mid-layer). For instance, the
633 <varlistentry> 1641 <function>drm_crtc_helper_set_config</function> function can be used to
634 <term>DRM_IOCTL_MODESET_CTL</term> 1642 fill the struct <structname>drm_crtc_funcs</structname>
635 <listitem> 1643 <structfield>set_config</structfield> field. When called, it will split
636 <para> 1644 the <methodname>set_config</methodname> operation in smaller, simpler
637 This should be called by application level drivers before and 1645 operations and call the driver to handle them.
638 after mode setting, since on many devices the vertical blank
639 counter is reset at that time. Internally, the DRM snapshots
640 the last vblank count when the ioctl is called with the
641 _DRM_PRE_MODESET command, so that the counter won't go backwards
642 (which is dealt with when _DRM_POST_MODESET is used).
643 </para>
644 </listitem>
645 </varlistentry>
646 </variablelist>
647<!--!Edrivers/char/drm/drm_irq.c-->
648 </para> 1646 </para>
649 <para> 1647 <para>
650 To support the functions above, the DRM core provides several 1648 To use the mid-layer, drivers call <function>drm_crtc_helper_add</function>,
651 helper functions for tracking vertical blank counters, and 1649 <function>drm_encoder_helper_add</function> and
652 requires drivers to provide several callbacks: 1650 <function>drm_connector_helper_add</function> functions to install their
653 get_vblank_counter(), enable_vblank() and disable_vblank(). The 1651 mid-layer bottom operations handlers, and fill the
654 core uses get_vblank_counter() to keep the counter accurate 1652 <structname>drm_crtc_funcs</structname>,
655 across interrupt disable periods. It should return the current 1653 <structname>drm_encoder_funcs</structname> and
656 vertical blank event count, which is often tracked in a device 1654 <structname>drm_connector_funcs</structname> structures with pointers to
657 register. The enable and disable vblank callbacks should enable 1655 the mid-layer top API functions. Installing the mid-layer bottom operation
658 and disable vertical blank interrupts, respectively. In the 1656 handlers is best done right after registering the corresponding KMS object.
659 absence of DRM clients waiting on vblank events, the core DRM
660 code uses the disable_vblank() function to disable
661 interrupts, which saves power. They are re-enabled again when
662 a client calls the vblank wait ioctl above.
663 </para> 1657 </para>
664 <para> 1658 <para>
665 A device that doesn't provide a count register may simply use an 1659 The mid-layer is not split between CRTC, encoder and connector operations.
666 internal atomic counter incremented on every vertical blank 1660 To use it, a driver must provide bottom functions for all of the three KMS
667 interrupt (and then treat the enable_vblank() and disable_vblank() 1661 entities.
668 callbacks as no-ops).
669 </para> 1662 </para>
1663 <sect2>
1664 <title>Helper Functions</title>
1665 <itemizedlist>
1666 <listitem>
1667 <synopsis>int drm_crtc_helper_set_config(struct drm_mode_set *set);</synopsis>
1668 <para>
1669 The <function>drm_crtc_helper_set_config</function> helper function
1670 is a CRTC <methodname>set_config</methodname> implementation. It
1671 first tries to locate the best encoder for each connector by calling
1672 the connector <methodname>best_encoder</methodname> helper
1673 operation.
1674 </para>
1675 <para>
1676 After locating the appropriate encoders, the helper function will
1677 call the <methodname>mode_fixup</methodname> encoder and CRTC helper
1678 operations to adjust the requested mode, or reject it completely in
1679 which case an error will be returned to the application. If the new
1680 configuration after mode adjustment is identical to the current
1681 configuration the helper function will return without performing any
1682 other operation.
1683 </para>
1684 <para>
1685 If the adjusted mode is identical to the current mode but changes to
1686 the frame buffer need to be applied, the
1687 <function>drm_crtc_helper_set_config</function> function will call
1688 the CRTC <methodname>mode_set_base</methodname> helper operation. If
1689 the adjusted mode differs from the current mode, or if the
1690 <methodname>mode_set_base</methodname> helper operation is not
1691 provided, the helper function performs a full mode set sequence by
1692 calling the <methodname>prepare</methodname>,
1693 <methodname>mode_set</methodname> and
1694 <methodname>commit</methodname> CRTC and encoder helper operations,
1695 in that order.
1696 </para>
1697 </listitem>
1698 <listitem>
1699 <synopsis>void drm_helper_connector_dpms(struct drm_connector *connector, int mode);</synopsis>
1700 <para>
1701 The <function>drm_helper_connector_dpms</function> helper function
1702 is a connector <methodname>dpms</methodname> implementation that
1703 tracks power state of connectors. To use the function, drivers must
1704 provide <methodname>dpms</methodname> helper operations for CRTCs
1705 and encoders to apply the DPMS state to the device.
1706 </para>
1707 <para>
1708 The mid-layer doesn't track the power state of CRTCs and encoders.
1709 The <methodname>dpms</methodname> helper operations can thus be
1710 called with a mode identical to the currently active mode.
1711 </para>
1712 </listitem>
1713 <listitem>
1714 <synopsis>int drm_helper_probe_single_connector_modes(struct drm_connector *connector,
1715 uint32_t maxX, uint32_t maxY);</synopsis>
1716 <para>
1717 The <function>drm_helper_probe_single_connector_modes</function> helper
1718 function is a connector <methodname>fill_modes</methodname>
1719 implementation that updates the connection status for the connector
1720 and then retrieves a list of modes by calling the connector
1721 <methodname>get_modes</methodname> helper operation.
1722 </para>
1723 <para>
1724 The function filters out modes larger than
1725 <parameter>max_width</parameter> and <parameter>max_height</parameter>
1726 if specified. It then calls the connector
1727 <methodname>mode_valid</methodname> helper operation for each mode in
1728 the probed list to check whether the mode is valid for the connector.
1729 </para>
1730 </listitem>
1731 </itemizedlist>
1732 </sect2>
1733 <sect2>
1734 <title>CRTC Helper Operations</title>
1735 <itemizedlist>
1736 <listitem id="drm-helper-crtc-mode-fixup">
1737 <synopsis>bool (*mode_fixup)(struct drm_crtc *crtc,
1738 const struct drm_display_mode *mode,
1739 struct drm_display_mode *adjusted_mode);</synopsis>
1740 <para>
1741 Let CRTCs adjust the requested mode or reject it completely. This
1742 operation returns true if the mode is accepted (possibly after being
1743 adjusted) or false if it is rejected.
1744 </para>
1745 <para>
1746 The <methodname>mode_fixup</methodname> operation should reject the
1747 mode if it can't reasonably use it. The definition of "reasonable"
1748 is currently fuzzy in this context. One possible behaviour would be
1749 to set the adjusted mode to the panel timings when a fixed-mode
1750 panel is used with hardware capable of scaling. Another behaviour
1751 would be to accept any input mode and adjust it to the closest mode
1752 supported by the hardware (FIXME: This needs to be clarified).
1753 </para>
1754 </listitem>
1755 <listitem>
1756 <synopsis>int (*mode_set_base)(struct drm_crtc *crtc, int x, int y,
1757 struct drm_framebuffer *old_fb)</synopsis>
1758 <para>
1759 Move the CRTC on the current frame buffer (stored in
1760 <literal>crtc-&gt;fb</literal>) to position (x,y). Any of the frame
1761 buffer, x position or y position may have been modified.
1762 </para>
1763 <para>
1764 This helper operation is optional. If not provided, the
1765 <function>drm_crtc_helper_set_config</function> function will fall
1766 back to the <methodname>mode_set</methodname> helper operation.
1767 </para>
1768 <note><para>
1769 FIXME: Why are x and y passed as arguments, as they can be accessed
1770 through <literal>crtc-&gt;x</literal> and
1771 <literal>crtc-&gt;y</literal>?
1772 </para></note>
1773 </listitem>
1774 <listitem>
1775 <synopsis>void (*prepare)(struct drm_crtc *crtc);</synopsis>
1776 <para>
1777 Prepare the CRTC for mode setting. This operation is called after
1778 validating the requested mode. Drivers use it to perform
1779 device-specific operations required before setting the new mode.
1780 </para>
1781 </listitem>
1782 <listitem>
1783 <synopsis>int (*mode_set)(struct drm_crtc *crtc, struct drm_display_mode *mode,
1784 struct drm_display_mode *adjusted_mode, int x, int y,
1785 struct drm_framebuffer *old_fb);</synopsis>
1786 <para>
1787 Set a new mode, position and frame buffer. Depending on the device
1788 requirements, the mode can be stored internally by the driver and
1789 applied in the <methodname>commit</methodname> operation, or
1790 programmed to the hardware immediately.
1791 </para>
1792 <para>
1793 The <methodname>mode_set</methodname> operation returns 0 on success
1794 or a negative error code if an error occurs.
1795 </para>
1796 </listitem>
1797 <listitem>
1798 <synopsis>void (*commit)(struct drm_crtc *crtc);</synopsis>
1799 <para>
1800 Commit a mode. This operation is called after setting the new mode.
1801 Upon return the device must use the new mode and be fully
1802 operational.
1803 </para>
1804 </listitem>
1805 </itemizedlist>
1806 </sect2>
1807 <sect2>
1808 <title>Encoder Helper Operations</title>
1809 <itemizedlist>
1810 <listitem>
1811 <synopsis>bool (*mode_fixup)(struct drm_encoder *encoder,
1812 const struct drm_display_mode *mode,
1813 struct drm_display_mode *adjusted_mode);</synopsis>
1814 <note><para>
1815 FIXME: The mode argument be const, but the i915 driver modifies
1816 mode-&gt;clock in <function>intel_dp_mode_fixup</function>.
1817 </para></note>
1818 <para>
1819 Let encoders adjust the requested mode or reject it completely. This
1820 operation returns true if the mode is accepted (possibly after being
1821 adjusted) or false if it is rejected. See the
1822 <link linkend="drm-helper-crtc-mode-fixup">mode_fixup CRTC helper
1823 operation</link> for an explanation of the allowed adjustments.
1824 </para>
1825 </listitem>
1826 <listitem>
1827 <synopsis>void (*prepare)(struct drm_encoder *encoder);</synopsis>
1828 <para>
1829 Prepare the encoder for mode setting. This operation is called after
1830 validating the requested mode. Drivers use it to perform
1831 device-specific operations required before setting the new mode.
1832 </para>
1833 </listitem>
1834 <listitem>
1835 <synopsis>void (*mode_set)(struct drm_encoder *encoder,
1836 struct drm_display_mode *mode,
1837 struct drm_display_mode *adjusted_mode);</synopsis>
1838 <para>
1839 Set a new mode. Depending on the device requirements, the mode can
1840 be stored internally by the driver and applied in the
1841 <methodname>commit</methodname> operation, or programmed to the
1842 hardware immediately.
1843 </para>
1844 </listitem>
1845 <listitem>
1846 <synopsis>void (*commit)(struct drm_encoder *encoder);</synopsis>
1847 <para>
1848 Commit a mode. This operation is called after setting the new mode.
1849 Upon return the device must use the new mode and be fully
1850 operational.
1851 </para>
1852 </listitem>
1853 </itemizedlist>
1854 </sect2>
1855 <sect2>
1856 <title>Connector Helper Operations</title>
1857 <itemizedlist>
1858 <listitem>
1859 <synopsis>struct drm_encoder *(*best_encoder)(struct drm_connector *connector);</synopsis>
1860 <para>
1861 Return a pointer to the best encoder for the connecter. Device that
1862 map connectors to encoders 1:1 simply return the pointer to the
1863 associated encoder. This operation is mandatory.
1864 </para>
1865 </listitem>
1866 <listitem>
1867 <synopsis>int (*get_modes)(struct drm_connector *connector);</synopsis>
1868 <para>
1869 Fill the connector's <structfield>probed_modes</structfield> list
1870 by parsing EDID data with <function>drm_add_edid_modes</function> or
1871 calling <function>drm_mode_probed_add</function> directly for every
1872 supported mode and return the number of modes it has detected. This
1873 operation is mandatory.
1874 </para>
1875 <para>
1876 When adding modes manually the driver creates each mode with a call to
1877 <function>drm_mode_create</function> and must fill the following fields.
1878 <itemizedlist>
1879 <listitem>
1880 <synopsis>__u32 type;</synopsis>
1881 <para>
1882 Mode type bitmask, a combination of
1883 <variablelist>
1884 <varlistentry>
1885 <term>DRM_MODE_TYPE_BUILTIN</term>
1886 <listitem><para>not used?</para></listitem>
1887 </varlistentry>
1888 <varlistentry>
1889 <term>DRM_MODE_TYPE_CLOCK_C</term>
1890 <listitem><para>not used?</para></listitem>
1891 </varlistentry>
1892 <varlistentry>
1893 <term>DRM_MODE_TYPE_CRTC_C</term>
1894 <listitem><para>not used?</para></listitem>
1895 </varlistentry>
1896 <varlistentry>
1897 <term>
1898 DRM_MODE_TYPE_PREFERRED - The preferred mode for the connector
1899 </term>
1900 <listitem>
1901 <para>not used?</para>
1902 </listitem>
1903 </varlistentry>
1904 <varlistentry>
1905 <term>DRM_MODE_TYPE_DEFAULT</term>
1906 <listitem><para>not used?</para></listitem>
1907 </varlistentry>
1908 <varlistentry>
1909 <term>DRM_MODE_TYPE_USERDEF</term>
1910 <listitem><para>not used?</para></listitem>
1911 </varlistentry>
1912 <varlistentry>
1913 <term>DRM_MODE_TYPE_DRIVER</term>
1914 <listitem>
1915 <para>
1916 The mode has been created by the driver (as opposed to
1917 to user-created modes).
1918 </para>
1919 </listitem>
1920 </varlistentry>
1921 </variablelist>
1922 Drivers must set the DRM_MODE_TYPE_DRIVER bit for all modes they
1923 create, and set the DRM_MODE_TYPE_PREFERRED bit for the preferred
1924 mode.
1925 </para>
1926 </listitem>
1927 <listitem>
1928 <synopsis>__u32 clock;</synopsis>
1929 <para>Pixel clock frequency in kHz unit</para>
1930 </listitem>
1931 <listitem>
1932 <synopsis>__u16 hdisplay, hsync_start, hsync_end, htotal;
1933 __u16 vdisplay, vsync_start, vsync_end, vtotal;</synopsis>
1934 <para>Horizontal and vertical timing information</para>
1935 <screen><![CDATA[
1936 Active Front Sync Back
1937 Region Porch Porch
1938 <-----------------------><----------------><-------------><-------------->
1939
1940 //////////////////////|
1941 ////////////////////// |
1942 ////////////////////// |.................. ................
1943 _______________
1944
1945 <----- [hv]display ----->
1946 <------------- [hv]sync_start ------------>
1947 <--------------------- [hv]sync_end --------------------->
1948 <-------------------------------- [hv]total ----------------------------->
1949]]></screen>
1950 </listitem>
1951 <listitem>
1952 <synopsis>__u16 hskew;
1953 __u16 vscan;</synopsis>
1954 <para>Unknown</para>
1955 </listitem>
1956 <listitem>
1957 <synopsis>__u32 flags;</synopsis>
1958 <para>
1959 Mode flags, a combination of
1960 <variablelist>
1961 <varlistentry>
1962 <term>DRM_MODE_FLAG_PHSYNC</term>
1963 <listitem><para>
1964 Horizontal sync is active high
1965 </para></listitem>
1966 </varlistentry>
1967 <varlistentry>
1968 <term>DRM_MODE_FLAG_NHSYNC</term>
1969 <listitem><para>
1970 Horizontal sync is active low
1971 </para></listitem>
1972 </varlistentry>
1973 <varlistentry>
1974 <term>DRM_MODE_FLAG_PVSYNC</term>
1975 <listitem><para>
1976 Vertical sync is active high
1977 </para></listitem>
1978 </varlistentry>
1979 <varlistentry>
1980 <term>DRM_MODE_FLAG_NVSYNC</term>
1981 <listitem><para>
1982 Vertical sync is active low
1983 </para></listitem>
1984 </varlistentry>
1985 <varlistentry>
1986 <term>DRM_MODE_FLAG_INTERLACE</term>
1987 <listitem><para>
1988 Mode is interlaced
1989 </para></listitem>
1990 </varlistentry>
1991 <varlistentry>
1992 <term>DRM_MODE_FLAG_DBLSCAN</term>
1993 <listitem><para>
1994 Mode uses doublescan
1995 </para></listitem>
1996 </varlistentry>
1997 <varlistentry>
1998 <term>DRM_MODE_FLAG_CSYNC</term>
1999 <listitem><para>
2000 Mode uses composite sync
2001 </para></listitem>
2002 </varlistentry>
2003 <varlistentry>
2004 <term>DRM_MODE_FLAG_PCSYNC</term>
2005 <listitem><para>
2006 Composite sync is active high
2007 </para></listitem>
2008 </varlistentry>
2009 <varlistentry>
2010 <term>DRM_MODE_FLAG_NCSYNC</term>
2011 <listitem><para>
2012 Composite sync is active low
2013 </para></listitem>
2014 </varlistentry>
2015 <varlistentry>
2016 <term>DRM_MODE_FLAG_HSKEW</term>
2017 <listitem><para>
2018 hskew provided (not used?)
2019 </para></listitem>
2020 </varlistentry>
2021 <varlistentry>
2022 <term>DRM_MODE_FLAG_BCAST</term>
2023 <listitem><para>
2024 not used?
2025 </para></listitem>
2026 </varlistentry>
2027 <varlistentry>
2028 <term>DRM_MODE_FLAG_PIXMUX</term>
2029 <listitem><para>
2030 not used?
2031 </para></listitem>
2032 </varlistentry>
2033 <varlistentry>
2034 <term>DRM_MODE_FLAG_DBLCLK</term>
2035 <listitem><para>
2036 not used?
2037 </para></listitem>
2038 </varlistentry>
2039 <varlistentry>
2040 <term>DRM_MODE_FLAG_CLKDIV2</term>
2041 <listitem><para>
2042 ?
2043 </para></listitem>
2044 </varlistentry>
2045 </variablelist>
2046 </para>
2047 <para>
2048 Note that modes marked with the INTERLACE or DBLSCAN flags will be
2049 filtered out by
2050 <function>drm_helper_probe_single_connector_modes</function> if
2051 the connector's <structfield>interlace_allowed</structfield> or
2052 <structfield>doublescan_allowed</structfield> field is set to 0.
2053 </para>
2054 </listitem>
2055 <listitem>
2056 <synopsis>char name[DRM_DISPLAY_MODE_LEN];</synopsis>
2057 <para>
2058 Mode name. The driver must call
2059 <function>drm_mode_set_name</function> to fill the mode name from
2060 <structfield>hdisplay</structfield>,
2061 <structfield>vdisplay</structfield> and interlace flag after
2062 filling the corresponding fields.
2063 </para>
2064 </listitem>
2065 </itemizedlist>
2066 </para>
2067 <para>
2068 The <structfield>vrefresh</structfield> value is computed by
2069 <function>drm_helper_probe_single_connector_modes</function>.
2070 </para>
2071 <para>
2072 When parsing EDID data, <function>drm_add_edid_modes</function> fill the
2073 connector <structfield>display_info</structfield>
2074 <structfield>width_mm</structfield> and
2075 <structfield>height_mm</structfield> fields. When creating modes
2076 manually the <methodname>get_modes</methodname> helper operation must
2077 set the <structfield>display_info</structfield>
2078 <structfield>width_mm</structfield> and
2079 <structfield>height_mm</structfield> fields if they haven't been set
2080 already (for instance at initilization time when a fixed-size panel is
2081 attached to the connector). The mode <structfield>width_mm</structfield>
2082 and <structfield>height_mm</structfield> fields are only used internally
2083 during EDID parsing and should not be set when creating modes manually.
2084 </para>
2085 </listitem>
2086 <listitem>
2087 <synopsis>int (*mode_valid)(struct drm_connector *connector,
2088 struct drm_display_mode *mode);</synopsis>
2089 <para>
2090 Verify whether a mode is valid for the connector. Return MODE_OK for
2091 supported modes and one of the enum drm_mode_status values (MODE_*)
2092 for unsupported modes. This operation is mandatory.
2093 </para>
2094 <para>
2095 As the mode rejection reason is currently not used beside for
2096 immediately removing the unsupported mode, an implementation can
2097 return MODE_BAD regardless of the exact reason why the mode is not
2098 valid.
2099 </para>
2100 <note><para>
2101 Note that the <methodname>mode_valid</methodname> helper operation is
2102 only called for modes detected by the device, and
2103 <emphasis>not</emphasis> for modes set by the user through the CRTC
2104 <methodname>set_config</methodname> operation.
2105 </para></note>
2106 </listitem>
2107 </itemizedlist>
2108 </sect2>
670 </sect1> 2109 </sect1>
671 2110
672 <sect1> 2111 <!-- Internals: vertical blanking -->
673 <title>Memory management</title> 2112
2113 <sect1 id="drm-vertical-blank">
2114 <title>Vertical Blanking</title>
2115 <para>
2116 Vertical blanking plays a major role in graphics rendering. To achieve
2117 tear-free display, users must synchronize page flips and/or rendering to
2118 vertical blanking. The DRM API offers ioctls to perform page flips
2119 synchronized to vertical blanking and wait for vertical blanking.
2120 </para>
2121 <para>
2122 The DRM core handles most of the vertical blanking management logic, which
2123 involves filtering out spurious interrupts, keeping race-free blanking
2124 counters, coping with counter wrap-around and resets and keeping use
2125 counts. It relies on the driver to generate vertical blanking interrupts
2126 and optionally provide a hardware vertical blanking counter. Drivers must
2127 implement the following operations.
2128 </para>
2129 <itemizedlist>
2130 <listitem>
2131 <synopsis>int (*enable_vblank) (struct drm_device *dev, int crtc);
2132void (*disable_vblank) (struct drm_device *dev, int crtc);</synopsis>
2133 <para>
2134 Enable or disable vertical blanking interrupts for the given CRTC.
2135 </para>
2136 </listitem>
2137 <listitem>
2138 <synopsis>u32 (*get_vblank_counter) (struct drm_device *dev, int crtc);</synopsis>
2139 <para>
2140 Retrieve the value of the vertical blanking counter for the given
2141 CRTC. If the hardware maintains a vertical blanking counter its value
2142 should be returned. Otherwise drivers can use the
2143 <function>drm_vblank_count</function> helper function to handle this
2144 operation.
2145 </para>
2146 </listitem>
2147 </itemizedlist>
674 <para> 2148 <para>
675 The memory manager lies at the heart of many DRM operations; it 2149 Drivers must initialize the vertical blanking handling core with a call to
676 is required to support advanced client features like OpenGL 2150 <function>drm_vblank_init</function> in their
677 pbuffers. The DRM currently contains two memory managers: TTM 2151 <methodname>load</methodname> operation. The function will set the struct
678 and GEM. 2152 <structname>drm_device</structname>
2153 <structfield>vblank_disable_allowed</structfield> field to 0. This will
2154 keep vertical blanking interrupts enabled permanently until the first mode
2155 set operation, where <structfield>vblank_disable_allowed</structfield> is
2156 set to 1. The reason behind this is not clear. Drivers can set the field
2157 to 1 after <function>calling drm_vblank_init</function> to make vertical
2158 blanking interrupts dynamically managed from the beginning.
679 </para> 2159 </para>
2160 <para>
2161 Vertical blanking interrupts can be enabled by the DRM core or by drivers
2162 themselves (for instance to handle page flipping operations). The DRM core
2163 maintains a vertical blanking use count to ensure that the interrupts are
2164 not disabled while a user still needs them. To increment the use count,
2165 drivers call <function>drm_vblank_get</function>. Upon return vertical
2166 blanking interrupts are guaranteed to be enabled.
2167 </para>
2168 <para>
2169 To decrement the use count drivers call
2170 <function>drm_vblank_put</function>. Only when the use count drops to zero
2171 will the DRM core disable the vertical blanking interrupts after a delay
2172 by scheduling a timer. The delay is accessible through the vblankoffdelay
2173 module parameter or the <varname>drm_vblank_offdelay</varname> global
2174 variable and expressed in milliseconds. Its default value is 5000 ms.
2175 </para>
2176 <para>
2177 When a vertical blanking interrupt occurs drivers only need to call the
2178 <function>drm_handle_vblank</function> function to account for the
2179 interrupt.
2180 </para>
2181 <para>
2182 Resources allocated by <function>drm_vblank_init</function> must be freed
2183 with a call to <function>drm_vblank_cleanup</function> in the driver
2184 <methodname>unload</methodname> operation handler.
2185 </para>
2186 </sect1>
2187
2188 <!-- Internals: open/close, file operations and ioctls -->
680 2189
2190 <sect1>
2191 <title>Open/Close, File Operations and IOCTLs</title>
681 <sect2> 2192 <sect2>
682 <title>The Translation Table Manager (TTM)</title> 2193 <title>Open and Close</title>
2194 <synopsis>int (*firstopen) (struct drm_device *);
2195void (*lastclose) (struct drm_device *);
2196int (*open) (struct drm_device *, struct drm_file *);
2197void (*preclose) (struct drm_device *, struct drm_file *);
2198void (*postclose) (struct drm_device *, struct drm_file *);</synopsis>
2199 <abstract>Open and close handlers. None of those methods are mandatory.
2200 </abstract>
683 <para> 2201 <para>
684 TTM was developed by Tungsten Graphics, primarily by Thomas 2202 The <methodname>firstopen</methodname> method is called by the DRM core
685 Hellström, and is intended to be a flexible, high performance 2203 when an application opens a device that has no other opened file handle.
686 graphics memory manager. 2204 Similarly the <methodname>lastclose</methodname> method is called when
2205 the last application holding a file handle opened on the device closes
2206 it. Both methods are mostly used for UMS (User Mode Setting) drivers to
2207 acquire and release device resources which should be done in the
2208 <methodname>load</methodname> and <methodname>unload</methodname>
2209 methods for KMS drivers.
687 </para> 2210 </para>
688 <para> 2211 <para>
689 Drivers wishing to support TTM must fill out a drm_bo_driver 2212 Note that the <methodname>lastclose</methodname> method is also called
690 structure. 2213 at module unload time or, for hot-pluggable devices, when the device is
2214 unplugged. The <methodname>firstopen</methodname> and
2215 <methodname>lastclose</methodname> calls can thus be unbalanced.
691 </para> 2216 </para>
692 <para> 2217 <para>
693 TTM design background and information belongs here. 2218 The <methodname>open</methodname> method is called every time the device
2219 is opened by an application. Drivers can allocate per-file private data
2220 in this method and store them in the struct
2221 <structname>drm_file</structname> <structfield>driver_priv</structfield>
2222 field. Note that the <methodname>open</methodname> method is called
2223 before <methodname>firstopen</methodname>.
2224 </para>
2225 <para>
2226 The close operation is split into <methodname>preclose</methodname> and
2227 <methodname>postclose</methodname> methods. Drivers must stop and
2228 cleanup all per-file operations in the <methodname>preclose</methodname>
2229 method. For instance pending vertical blanking and page flip events must
2230 be cancelled. No per-file operation is allowed on the file handle after
2231 returning from the <methodname>preclose</methodname> method.
2232 </para>
2233 <para>
2234 Finally the <methodname>postclose</methodname> method is called as the
2235 last step of the close operation, right before calling the
2236 <methodname>lastclose</methodname> method if no other open file handle
2237 exists for the device. Drivers that have allocated per-file private data
2238 in the <methodname>open</methodname> method should free it here.
2239 </para>
2240 <para>
2241 The <methodname>lastclose</methodname> method should restore CRTC and
2242 plane properties to default value, so that a subsequent open of the
2243 device will not inherit state from the previous user.
694 </para> 2244 </para>
695 </sect2> 2245 </sect2>
696
697 <sect2> 2246 <sect2>
698 <title>The Graphics Execution Manager (GEM)</title> 2247 <title>File Operations</title>
2248 <synopsis>const struct file_operations *fops</synopsis>
2249 <abstract>File operations for the DRM device node.</abstract>
699 <para> 2250 <para>
700 GEM is an Intel project, authored by Eric Anholt and Keith 2251 Drivers must define the file operations structure that forms the DRM
701 Packard. It provides simpler interfaces than TTM, and is well 2252 userspace API entry point, even though most of those operations are
702 suited for UMA devices. 2253 implemented in the DRM core. The <methodname>open</methodname>,
2254 <methodname>release</methodname> and <methodname>ioctl</methodname>
2255 operations are handled by
2256 <programlisting>
2257 .owner = THIS_MODULE,
2258 .open = drm_open,
2259 .release = drm_release,
2260 .unlocked_ioctl = drm_ioctl,
2261 #ifdef CONFIG_COMPAT
2262 .compat_ioctl = drm_compat_ioctl,
2263 #endif
2264 </programlisting>
703 </para> 2265 </para>
704 <para> 2266 <para>
705 GEM-enabled drivers must provide gem_init_object() and 2267 Drivers that implement private ioctls that requires 32/64bit
706 gem_free_object() callbacks to support the core memory 2268 compatibility support must provide their own
707 allocation routines. They should also provide several driver-specific 2269 <methodname>compat_ioctl</methodname> handler that processes private
708 ioctls to support command execution, pinning, buffer 2270 ioctls and calls <function>drm_compat_ioctl</function> for core ioctls.
709 read &amp; write, mapping, and domain ownership transfers.
710 </para> 2271 </para>
711 <para> 2272 <para>
712 On a fundamental level, GEM involves several operations: 2273 The <methodname>read</methodname> and <methodname>poll</methodname>
713 <itemizedlist> 2274 operations provide support for reading DRM events and polling them. They
714 <listitem>Memory allocation and freeing</listitem> 2275 are implemented by
715 <listitem>Command execution</listitem> 2276 <programlisting>
716 <listitem>Aperture management at command execution time</listitem> 2277 .poll = drm_poll,
717 </itemizedlist> 2278 .read = drm_read,
718 Buffer object allocation is relatively 2279 .fasync = drm_fasync,
719 straightforward and largely provided by Linux's shmem layer, which 2280 .llseek = no_llseek,
720 provides memory to back each object. When mapped into the GTT 2281 </programlisting>
721 or used in a command buffer, the backing pages for an object are 2282 </para>
722 flushed to memory and marked write combined so as to be coherent 2283 <para>
723 with the GPU. Likewise, if the CPU accesses an object after the GPU 2284 The memory mapping implementation varies depending on how the driver
724 has finished rendering to the object, then the object must be made 2285 manages memory. Pre-GEM drivers will use <function>drm_mmap</function>,
725 coherent with the CPU's view 2286 while GEM-aware drivers will use <function>drm_gem_mmap</function>. See
726 of memory, usually involving GPU cache flushing of various kinds. 2287 <xref linkend="drm-gem"/>.
727 This core CPU&lt;-&gt;GPU coherency management is provided by a 2288 <programlisting>
728 device-specific ioctl, which evaluates an object's current domain and 2289 .mmap = drm_gem_mmap,
729 performs any necessary flushing or synchronization to put the object 2290 </programlisting>
730 into the desired coherency domain (note that the object may be busy, 2291 </para>
731 i.e. an active render target; in that case, setting the domain 2292 <para>
732 blocks the client and waits for rendering to complete before 2293 No other file operation is supported by the DRM API.
733 performing any necessary flushing operations). 2294 </para>
734 </para> 2295 </sect2>
735 <para> 2296 <sect2>
736 Perhaps the most important GEM function is providing a command 2297 <title>IOCTLs</title>
737 execution interface to clients. Client programs construct command 2298 <synopsis>struct drm_ioctl_desc *ioctls;
738 buffers containing references to previously allocated memory objects, 2299int num_ioctls;</synopsis>
739 and then submit them to GEM. At that point, GEM takes care to bind 2300 <abstract>Driver-specific ioctls descriptors table.</abstract>
740 all the objects into the GTT, execute the buffer, and provide 2301 <para>
741 necessary synchronization between clients accessing the same buffers. 2302 Driver-specific ioctls numbers start at DRM_COMMAND_BASE. The ioctls
742 This often involves evicting some objects from the GTT and re-binding 2303 descriptors table is indexed by the ioctl number offset from the base
743 others (a fairly expensive operation), and providing relocation 2304 value. Drivers can use the DRM_IOCTL_DEF_DRV() macro to initialize the
744 support which hides fixed GTT offsets from clients. Clients must 2305 table entries.
745 take care not to submit command buffers that reference more objects 2306 </para>
746 than can fit in the GTT; otherwise, GEM will reject them and no rendering 2307 <para>
747 will occur. Similarly, if several objects in the buffer require 2308 <programlisting>DRM_IOCTL_DEF_DRV(ioctl, func, flags)</programlisting>
748 fence registers to be allocated for correct rendering (e.g. 2D blits 2309 <para>
749 on pre-965 chips), care must be taken not to require more fence 2310 <parameter>ioctl</parameter> is the ioctl name. Drivers must define
750 registers than are available to the client. Such resource management 2311 the DRM_##ioctl and DRM_IOCTL_##ioctl macros to the ioctl number
751 should be abstracted from the client in libdrm. 2312 offset from DRM_COMMAND_BASE and the ioctl number respectively. The
2313 first macro is private to the device while the second must be exposed
2314 to userspace in a public header.
2315 </para>
2316 <para>
2317 <parameter>func</parameter> is a pointer to the ioctl handler function
2318 compatible with the <type>drm_ioctl_t</type> type.
2319 <programlisting>typedef int drm_ioctl_t(struct drm_device *dev, void *data,
2320 struct drm_file *file_priv);</programlisting>
2321 </para>
2322 <para>
2323 <parameter>flags</parameter> is a bitmask combination of the following
2324 values. It restricts how the ioctl is allowed to be called.
2325 <itemizedlist>
2326 <listitem><para>
2327 DRM_AUTH - Only authenticated callers allowed
2328 </para></listitem>
2329 <listitem><para>
2330 DRM_MASTER - The ioctl can only be called on the master file
2331 handle
2332 </para></listitem>
2333 <listitem><para>
2334 DRM_ROOT_ONLY - Only callers with the SYSADMIN capability allowed
2335 </para></listitem>
2336 <listitem><para>
2337 DRM_CONTROL_ALLOW - The ioctl can only be called on a control
2338 device
2339 </para></listitem>
2340 <listitem><para>
2341 DRM_UNLOCKED - The ioctl handler will be called without locking
2342 the DRM global mutex
2343 </para></listitem>
2344 </itemizedlist>
2345 </para>
752 </para> 2346 </para>
753 </sect2> 2347 </sect2>
754
755 </sect1>
756
757 <!-- Output management -->
758 <sect1>
759 <title>Output management</title>
760 <para>
761 At the core of the DRM output management code is a set of
762 structures representing CRTCs, encoders, and connectors.
763 </para>
764 <para>
765 A CRTC is an abstraction representing a part of the chip that
766 contains a pointer to a scanout buffer. Therefore, the number
767 of CRTCs available determines how many independent scanout
768 buffers can be active at any given time. The CRTC structure
769 contains several fields to support this: a pointer to some video
770 memory, a display mode, and an (x, y) offset into the video
771 memory to support panning or configurations where one piece of
772 video memory spans multiple CRTCs.
773 </para>
774 <para>
775 An encoder takes pixel data from a CRTC and converts it to a
776 format suitable for any attached connectors. On some devices,
777 it may be possible to have a CRTC send data to more than one
778 encoder. In that case, both encoders would receive data from
779 the same scanout buffer, resulting in a "cloned" display
780 configuration across the connectors attached to each encoder.
781 </para>
782 <para>
783 A connector is the final destination for pixel data on a device,
784 and usually connects directly to an external display device like
785 a monitor or laptop panel. A connector can only be attached to
786 one encoder at a time. The connector is also the structure
787 where information about the attached display is kept, so it
788 contains fields for display data, EDID data, DPMS &amp;
789 connection status, and information about modes supported on the
790 attached displays.
791 </para>
792<!--!Edrivers/char/drm/drm_crtc.c-->
793 </sect1>
794
795 <sect1>
796 <title>Framebuffer management</title>
797 <para>
798 Clients need to provide a framebuffer object which provides a source
799 of pixels for a CRTC to deliver to the encoder(s) and ultimately the
800 connector(s). A framebuffer is fundamentally a driver-specific memory
801 object, made into an opaque handle by the DRM's addfb() function.
802 Once a framebuffer has been created this way, it may be passed to the
803 KMS mode setting routines for use in a completed configuration.
804 </para>
805 </sect1> 2348 </sect1>
806 2349
807 <sect1> 2350 <sect1>
@@ -812,15 +2355,24 @@ void intel_crt_init(struct drm_device *dev)
812 </para> 2355 </para>
813 </sect1> 2356 </sect1>
814 2357
2358 <!-- Internals: suspend/resume -->
2359
815 <sect1> 2360 <sect1>
816 <title>Suspend/resume</title> 2361 <title>Suspend/Resume</title>
2362 <para>
2363 The DRM core provides some suspend/resume code, but drivers wanting full
2364 suspend/resume support should provide save() and restore() functions.
2365 These are called at suspend, hibernate, or resume time, and should perform
2366 any state save or restore required by your device across suspend or
2367 hibernate states.
2368 </para>
2369 <synopsis>int (*suspend) (struct drm_device *, pm_message_t state);
2370int (*resume) (struct drm_device *);</synopsis>
817 <para> 2371 <para>
818 The DRM core provides some suspend/resume code, but drivers 2372 Those are legacy suspend and resume methods. New driver should use the
819 wanting full suspend/resume support should provide save() and 2373 power management interface provided by their bus type (usually through
820 restore() functions. These are called at suspend, 2374 the struct <structname>device_driver</structname> dev_pm_ops) and set
821 hibernate, or resume time, and should perform any state save or 2375 these methods to NULL.
822 restore required by your device across suspend or hibernate
823 states.
824 </para> 2376 </para>
825 </sect1> 2377 </sect1>
826 2378
@@ -833,6 +2385,35 @@ void intel_crt_init(struct drm_device *dev)
833 </sect1> 2385 </sect1>
834 </chapter> 2386 </chapter>
835 2387
2388<!-- TODO
2389
2390- Add a glossary
2391- Document the struct_mutex catch-all lock
2392- Document connector properties
2393
2394- Why is the load method optional?
2395- What are drivers supposed to set the initial display state to, and how?
2396 Connector's DPMS states are not initialized and are thus equal to
2397 DRM_MODE_DPMS_ON. The fbcon compatibility layer calls
2398 drm_helper_disable_unused_functions(), which disables unused encoders and
2399 CRTCs, but doesn't touch the connectors' DPMS state, and
2400 drm_helper_connector_dpms() in reaction to fbdev blanking events. Do drivers
2401 that don't implement (or just don't use) fbcon compatibility need to call
2402 those functions themselves?
2403- KMS drivers must call drm_vblank_pre_modeset() and drm_vblank_post_modeset()
2404 around mode setting. Should this be done in the DRM core?
2405- vblank_disable_allowed is set to 1 in the first drm_vblank_post_modeset()
2406 call and never set back to 0. It seems to be safe to permanently set it to 1
2407 in drm_vblank_init() for KMS driver, and it might be safe for UMS drivers as
2408 well. This should be investigated.
2409- crtc and connector .save and .restore operations are only used internally in
2410 drivers, should they be removed from the core?
2411- encoder mid-layer .save and .restore operations are only used internally in
2412 drivers, should they be removed from the core?
2413- encoder mid-layer .detect operation is only used internally in drivers,
2414 should it be removed from the core?
2415-->
2416
836 <!-- External interfaces --> 2417 <!-- External interfaces -->
837 2418
838 <chapter id="drmExternals"> 2419 <chapter id="drmExternals">
@@ -853,6 +2434,42 @@ void intel_crt_init(struct drm_device *dev)
853 Cover generic ioctls and sysfs layout here. We only need high-level 2434 Cover generic ioctls and sysfs layout here. We only need high-level
854 info, since man pages should cover the rest. 2435 info, since man pages should cover the rest.
855 </para> 2436 </para>
2437
2438 <!-- External: vblank handling -->
2439
2440 <sect1>
2441 <title>VBlank event handling</title>
2442 <para>
2443 The DRM core exposes two vertical blank related ioctls:
2444 <variablelist>
2445 <varlistentry>
2446 <term>DRM_IOCTL_WAIT_VBLANK</term>
2447 <listitem>
2448 <para>
2449 This takes a struct drm_wait_vblank structure as its argument,
2450 and it is used to block or request a signal when a specified
2451 vblank event occurs.
2452 </para>
2453 </listitem>
2454 </varlistentry>
2455 <varlistentry>
2456 <term>DRM_IOCTL_MODESET_CTL</term>
2457 <listitem>
2458 <para>
2459 This should be called by application level drivers before and
2460 after mode setting, since on many devices the vertical blank
2461 counter is reset at that time. Internally, the DRM snapshots
2462 the last vblank count when the ioctl is called with the
2463 _DRM_PRE_MODESET command, so that the counter won't go backwards
2464 (which is dealt with when _DRM_POST_MODESET is used).
2465 </para>
2466 </listitem>
2467 </varlistentry>
2468 </variablelist>
2469<!--!Edrivers/char/drm/drm_irq.c-->
2470 </para>
2471 </sect1>
2472
856 </chapter> 2473 </chapter>
857 2474
858 <!-- API reference --> 2475 <!-- API reference -->
diff --git a/Documentation/DocBook/media/Makefile b/Documentation/DocBook/media/Makefile
index 362520992ced..f9fd615427fb 100644
--- a/Documentation/DocBook/media/Makefile
+++ b/Documentation/DocBook/media/Makefile
@@ -56,15 +56,15 @@ FUNCS = \
56 write \ 56 write \
57 57
58IOCTLS = \ 58IOCTLS = \
59 $(shell perl -ne 'print "$$1 " if /\#define\s+([^\s]+)\s+_IO/' $(srctree)/include/linux/videodev2.h) \ 59 $(shell perl -ne 'print "$$1 " if /\#define\s+([^\s]+)\s+_IO/' $(srctree)/include/uapi/linux/videodev2.h) \
60 $(shell perl -ne 'print "$$1 " if /\#define\s+([^\s]+)\s+_IO/' $(srctree)/include/linux/dvb/audio.h) \ 60 $(shell perl -ne 'print "$$1 " if /\#define\s+([^\s]+)\s+_IO/' $(srctree)/include/uapi/linux/dvb/audio.h) \
61 $(shell perl -ne 'print "$$1 " if /\#define\s+([^\s]+)\s+_IO/' $(srctree)/include/linux/dvb/ca.h) \ 61 $(shell perl -ne 'print "$$1 " if /\#define\s+([^\s]+)\s+_IO/' $(srctree)/include/uapi/linux/dvb/ca.h) \
62 $(shell perl -ne 'print "$$1 " if /\#define\s+([^\s]+)\s+_IO/' $(srctree)/include/linux/dvb/dmx.h) \ 62 $(shell perl -ne 'print "$$1 " if /\#define\s+([^\s]+)\s+_IO/' $(srctree)/include/uapi/linux/dvb/dmx.h) \
63 $(shell perl -ne 'print "$$1 " if /\#define\s+([^\s]+)\s+_IO/' $(srctree)/include/linux/dvb/frontend.h) \ 63 $(shell perl -ne 'print "$$1 " if /\#define\s+([^\s]+)\s+_IO/' $(srctree)/include/uapi/linux/dvb/frontend.h) \
64 $(shell perl -ne 'print "$$1 " if /\#define\s+([A-Z][^\s]+)\s+_IO/' $(srctree)/include/linux/dvb/net.h) \ 64 $(shell perl -ne 'print "$$1 " if /\#define\s+([A-Z][^\s]+)\s+_IO/' $(srctree)/include/uapi/linux/dvb/net.h) \
65 $(shell perl -ne 'print "$$1 " if /\#define\s+([^\s]+)\s+_IO/' $(srctree)/include/linux/dvb/video.h) \ 65 $(shell perl -ne 'print "$$1 " if /\#define\s+([^\s]+)\s+_IO/' $(srctree)/include/uapi/linux/dvb/video.h) \
66 $(shell perl -ne 'print "$$1 " if /\#define\s+([^\s]+)\s+_IO/' $(srctree)/include/linux/media.h) \ 66 $(shell perl -ne 'print "$$1 " if /\#define\s+([^\s]+)\s+_IO/' $(srctree)/include/uapi/linux/media.h) \
67 $(shell perl -ne 'print "$$1 " if /\#define\s+([^\s]+)\s+_IO/' $(srctree)/include/linux/v4l2-subdev.h) \ 67 $(shell perl -ne 'print "$$1 " if /\#define\s+([^\s]+)\s+_IO/' $(srctree)/include/uapi/linux/v4l2-subdev.h) \
68 VIDIOC_SUBDEV_G_FRAME_INTERVAL \ 68 VIDIOC_SUBDEV_G_FRAME_INTERVAL \
69 VIDIOC_SUBDEV_S_FRAME_INTERVAL \ 69 VIDIOC_SUBDEV_S_FRAME_INTERVAL \
70 VIDIOC_SUBDEV_ENUM_MBUS_CODE \ 70 VIDIOC_SUBDEV_ENUM_MBUS_CODE \
@@ -74,32 +74,32 @@ IOCTLS = \
74 VIDIOC_SUBDEV_S_SELECTION \ 74 VIDIOC_SUBDEV_S_SELECTION \
75 75
76TYPES = \ 76TYPES = \
77 $(shell perl -ne 'print "$$1 " if /^typedef\s+[^\s]+\s+([^\s]+)\;/' $(srctree)/include/linux/videodev2.h) \ 77 $(shell perl -ne 'print "$$1 " if /^typedef\s+[^\s]+\s+([^\s]+)\;/' $(srctree)/include/uapi/linux/videodev2.h) \
78 $(shell perl -ne 'print "$$1 " if /^}\s+([a-z0-9_]+_t)/' $(srctree)/include/linux/dvb/frontend.h) 78 $(shell perl -ne 'print "$$1 " if /^}\s+([a-z0-9_]+_t)/' $(srctree)/include/uapi/linux/dvb/frontend.h)
79 79
80ENUMS = \ 80ENUMS = \
81 $(shell perl -ne 'print "$$1 " if /^enum\s+([^\s]+)\s+/' $(srctree)/include/linux/videodev2.h) \ 81 $(shell perl -ne 'print "$$1 " if /^enum\s+([^\s]+)\s+/' $(srctree)/include/uapi/linux/videodev2.h) \
82 $(shell perl -ne 'print "$$1 " if /^enum\s+([^\s]+)\s+/' $(srctree)/include/linux/dvb/audio.h) \ 82 $(shell perl -ne 'print "$$1 " if /^enum\s+([^\s]+)\s+/' $(srctree)/include/uapi/linux/dvb/audio.h) \
83 $(shell perl -ne 'print "$$1 " if /^enum\s+([^\s]+)\s+/' $(srctree)/include/linux/dvb/ca.h) \ 83 $(shell perl -ne 'print "$$1 " if /^enum\s+([^\s]+)\s+/' $(srctree)/include/uapi/linux/dvb/ca.h) \
84 $(shell perl -ne 'print "$$1 " if /^enum\s+([^\s]+)\s+/' $(srctree)/include/linux/dvb/dmx.h) \ 84 $(shell perl -ne 'print "$$1 " if /^enum\s+([^\s]+)\s+/' $(srctree)/include/uapi/linux/dvb/dmx.h) \
85 $(shell perl -ne 'print "$$1 " if /^enum\s+([^\s]+)\s+/' $(srctree)/include/linux/dvb/frontend.h) \ 85 $(shell perl -ne 'print "$$1 " if /^enum\s+([^\s]+)\s+/' $(srctree)/include/uapi/linux/dvb/frontend.h) \
86 $(shell perl -ne 'print "$$1 " if /^enum\s+([^\s]+)\s+/' $(srctree)/include/linux/dvb/net.h) \ 86 $(shell perl -ne 'print "$$1 " if /^enum\s+([^\s]+)\s+/' $(srctree)/include/uapi/linux/dvb/net.h) \
87 $(shell perl -ne 'print "$$1 " if /^enum\s+([^\s]+)\s+/' $(srctree)/include/linux/dvb/video.h) \ 87 $(shell perl -ne 'print "$$1 " if /^enum\s+([^\s]+)\s+/' $(srctree)/include/uapi/linux/dvb/video.h) \
88 $(shell perl -ne 'print "$$1 " if /^enum\s+([^\s]+)\s+/' $(srctree)/include/linux/media.h) \ 88 $(shell perl -ne 'print "$$1 " if /^enum\s+([^\s]+)\s+/' $(srctree)/include/uapi/linux/media.h) \
89 $(shell perl -ne 'print "$$1 " if /^enum\s+([^\s]+)\s+/' $(srctree)/include/linux/v4l2-mediabus.h) \ 89 $(shell perl -ne 'print "$$1 " if /^enum\s+([^\s]+)\s+/' $(srctree)/include/uapi/linux/v4l2-mediabus.h) \
90 $(shell perl -ne 'print "$$1 " if /^enum\s+([^\s]+)\s+/' $(srctree)/include/linux/v4l2-subdev.h) 90 $(shell perl -ne 'print "$$1 " if /^enum\s+([^\s]+)\s+/' $(srctree)/include/uapi/linux/v4l2-subdev.h)
91 91
92STRUCTS = \ 92STRUCTS = \
93 $(shell perl -ne 'print "$$1 " if /^struct\s+([^\s]+)\s+/' $(srctree)/include/linux/videodev2.h) \ 93 $(shell perl -ne 'print "$$1 " if /^struct\s+([^\s]+)\s+/' $(srctree)/include/uapi/linux/videodev2.h) \
94 $(shell perl -ne 'print "$$1 " if (/^struct\s+([^\s\{]+)\s*/)' $(srctree)/include/linux/dvb/audio.h) \ 94 $(shell perl -ne 'print "$$1 " if (/^struct\s+([^\s\{]+)\s*/)' $(srctree)/include/uapi/linux/dvb/audio.h) \
95 $(shell perl -ne 'print "$$1 " if (/^struct\s+([^\s]+)\s+/)' $(srctree)/include/linux/dvb/ca.h) \ 95 $(shell perl -ne 'print "$$1 " if (/^struct\s+([^\s]+)\s+/)' $(srctree)/include/uapi/linux/dvb/ca.h) \
96 $(shell perl -ne 'print "$$1 " if (/^struct\s+([^\s]+)\s+/)' $(srctree)/include/linux/dvb/dmx.h) \ 96 $(shell perl -ne 'print "$$1 " if (/^struct\s+([^\s]+)\s+/)' $(srctree)/include/uapi/linux/dvb/dmx.h) \
97 $(shell perl -ne 'print "$$1 " if (!/dtv\_cmds\_h/ && /^struct\s+([^\s]+)\s+/)' $(srctree)/include/linux/dvb/frontend.h) \ 97 $(shell perl -ne 'print "$$1 " if (!/dtv\_cmds\_h/ && /^struct\s+([^\s]+)\s+/)' $(srctree)/include/uapi/linux/dvb/frontend.h) \
98 $(shell perl -ne 'print "$$1 " if (/^struct\s+([A-Z][^\s]+)\s+/)' $(srctree)/include/linux/dvb/net.h) \ 98 $(shell perl -ne 'print "$$1 " if (/^struct\s+([A-Z][^\s]+)\s+/)' $(srctree)/include/uapi/linux/dvb/net.h) \
99 $(shell perl -ne 'print "$$1 " if (/^struct\s+([^\s]+)\s+/)' $(srctree)/include/linux/dvb/video.h) \ 99 $(shell perl -ne 'print "$$1 " if (/^struct\s+([^\s]+)\s+/)' $(srctree)/include/uapi/linux/dvb/video.h) \
100 $(shell perl -ne 'print "$$1 " if /^struct\s+([^\s]+)\s+/' $(srctree)/include/linux/media.h) \ 100 $(shell perl -ne 'print "$$1 " if /^struct\s+([^\s]+)\s+/' $(srctree)/include/uapi/linux/media.h) \
101 $(shell perl -ne 'print "$$1 " if /^struct\s+([^\s]+)\s+/' $(srctree)/include/linux/v4l2-subdev.h) \ 101 $(shell perl -ne 'print "$$1 " if /^struct\s+([^\s]+)\s+/' $(srctree)/include/uapi/linux/v4l2-subdev.h) \
102 $(shell perl -ne 'print "$$1 " if /^struct\s+([^\s]+)\s+/' $(srctree)/include/linux/v4l2-mediabus.h) 102 $(shell perl -ne 'print "$$1 " if /^struct\s+([^\s]+)\s+/' $(srctree)/include/uapi/linux/v4l2-mediabus.h)
103 103
104ERRORS = \ 104ERRORS = \
105 E2BIG \ 105 E2BIG \
@@ -205,7 +205,7 @@ $(MEDIA_OBJ_DIR)/v4l2.xml: $(OBJIMGFILES)
205 @(ln -sf $(MEDIA_SRC_DIR)/v4l/*xml $(MEDIA_OBJ_DIR)/) 205 @(ln -sf $(MEDIA_SRC_DIR)/v4l/*xml $(MEDIA_OBJ_DIR)/)
206 @(ln -sf $(MEDIA_SRC_DIR)/dvb/*xml $(MEDIA_OBJ_DIR)/) 206 @(ln -sf $(MEDIA_SRC_DIR)/dvb/*xml $(MEDIA_OBJ_DIR)/)
207 207
208$(MEDIA_OBJ_DIR)/videodev2.h.xml: $(srctree)/include/linux/videodev2.h $(MEDIA_OBJ_DIR)/v4l2.xml 208$(MEDIA_OBJ_DIR)/videodev2.h.xml: $(srctree)/include/uapi/linux/videodev2.h $(MEDIA_OBJ_DIR)/v4l2.xml
209 @$($(quiet)gen_xml) 209 @$($(quiet)gen_xml)
210 @( \ 210 @( \
211 echo "<programlisting>") > $@ 211 echo "<programlisting>") > $@
@@ -216,7 +216,7 @@ $(MEDIA_OBJ_DIR)/videodev2.h.xml: $(srctree)/include/linux/videodev2.h $(MEDIA_O
216 @( \ 216 @( \
217 echo "</programlisting>") >> $@ 217 echo "</programlisting>") >> $@
218 218
219$(MEDIA_OBJ_DIR)/audio.h.xml: $(srctree)/include/linux/dvb/audio.h $(MEDIA_OBJ_DIR)/v4l2.xml 219$(MEDIA_OBJ_DIR)/audio.h.xml: $(srctree)/include/uapi/linux/dvb/audio.h $(MEDIA_OBJ_DIR)/v4l2.xml
220 @$($(quiet)gen_xml) 220 @$($(quiet)gen_xml)
221 @( \ 221 @( \
222 echo "<programlisting>") > $@ 222 echo "<programlisting>") > $@
@@ -227,7 +227,7 @@ $(MEDIA_OBJ_DIR)/audio.h.xml: $(srctree)/include/linux/dvb/audio.h $(MEDIA_OBJ_D
227 @( \ 227 @( \
228 echo "</programlisting>") >> $@ 228 echo "</programlisting>") >> $@
229 229
230$(MEDIA_OBJ_DIR)/ca.h.xml: $(srctree)/include/linux/dvb/ca.h $(MEDIA_OBJ_DIR)/v4l2.xml 230$(MEDIA_OBJ_DIR)/ca.h.xml: $(srctree)/include/uapi/linux/dvb/ca.h $(MEDIA_OBJ_DIR)/v4l2.xml
231 @$($(quiet)gen_xml) 231 @$($(quiet)gen_xml)
232 @( \ 232 @( \
233 echo "<programlisting>") > $@ 233 echo "<programlisting>") > $@
@@ -238,7 +238,7 @@ $(MEDIA_OBJ_DIR)/ca.h.xml: $(srctree)/include/linux/dvb/ca.h $(MEDIA_OBJ_DIR)/v4
238 @( \ 238 @( \
239 echo "</programlisting>") >> $@ 239 echo "</programlisting>") >> $@
240 240
241$(MEDIA_OBJ_DIR)/dmx.h.xml: $(srctree)/include/linux/dvb/dmx.h $(MEDIA_OBJ_DIR)/v4l2.xml 241$(MEDIA_OBJ_DIR)/dmx.h.xml: $(srctree)/include/uapi/linux/dvb/dmx.h $(MEDIA_OBJ_DIR)/v4l2.xml
242 @$($(quiet)gen_xml) 242 @$($(quiet)gen_xml)
243 @( \ 243 @( \
244 echo "<programlisting>") > $@ 244 echo "<programlisting>") > $@
@@ -249,7 +249,7 @@ $(MEDIA_OBJ_DIR)/dmx.h.xml: $(srctree)/include/linux/dvb/dmx.h $(MEDIA_OBJ_DIR)/
249 @( \ 249 @( \
250 echo "</programlisting>") >> $@ 250 echo "</programlisting>") >> $@
251 251
252$(MEDIA_OBJ_DIR)/frontend.h.xml: $(srctree)/include/linux/dvb/frontend.h $(MEDIA_OBJ_DIR)/v4l2.xml 252$(MEDIA_OBJ_DIR)/frontend.h.xml: $(srctree)/include/uapi/linux/dvb/frontend.h $(MEDIA_OBJ_DIR)/v4l2.xml
253 @$($(quiet)gen_xml) 253 @$($(quiet)gen_xml)
254 @( \ 254 @( \
255 echo "<programlisting>") > $@ 255 echo "<programlisting>") > $@
@@ -260,7 +260,7 @@ $(MEDIA_OBJ_DIR)/frontend.h.xml: $(srctree)/include/linux/dvb/frontend.h $(MEDIA
260 @( \ 260 @( \
261 echo "</programlisting>") >> $@ 261 echo "</programlisting>") >> $@
262 262
263$(MEDIA_OBJ_DIR)/net.h.xml: $(srctree)/include/linux/dvb/net.h $(MEDIA_OBJ_DIR)/v4l2.xml 263$(MEDIA_OBJ_DIR)/net.h.xml: $(srctree)/include/uapi/linux/dvb/net.h $(MEDIA_OBJ_DIR)/v4l2.xml
264 @$($(quiet)gen_xml) 264 @$($(quiet)gen_xml)
265 @( \ 265 @( \
266 echo "<programlisting>") > $@ 266 echo "<programlisting>") > $@
@@ -271,7 +271,7 @@ $(MEDIA_OBJ_DIR)/net.h.xml: $(srctree)/include/linux/dvb/net.h $(MEDIA_OBJ_DIR)/
271 @( \ 271 @( \
272 echo "</programlisting>") >> $@ 272 echo "</programlisting>") >> $@
273 273
274$(MEDIA_OBJ_DIR)/video.h.xml: $(srctree)/include/linux/dvb/video.h $(MEDIA_OBJ_DIR)/v4l2.xml 274$(MEDIA_OBJ_DIR)/video.h.xml: $(srctree)/include/uapi/linux/dvb/video.h $(MEDIA_OBJ_DIR)/v4l2.xml
275 @$($(quiet)gen_xml) 275 @$($(quiet)gen_xml)
276 @( \ 276 @( \
277 echo "<programlisting>") > $@ 277 echo "<programlisting>") > $@
@@ -300,7 +300,7 @@ $(MEDIA_OBJ_DIR)/media-entities.tmpl: $(MEDIA_OBJ_DIR)/v4l2.xml
300 @( \ 300 @( \
301 for ident in $(IOCTLS) ; do \ 301 for ident in $(IOCTLS) ; do \
302 entity=`echo $$ident | tr _ -` ; \ 302 entity=`echo $$ident | tr _ -` ; \
303 id=`grep "<refname>$$ident" $(MEDIA_OBJ_DIR)/vidioc-*.xml | sed -r s,"^.*/(.*).xml.*","\1",` ; \ 303 id=`grep "<refname>$$ident" $(MEDIA_OBJ_DIR)/vidioc-*.xml $(MEDIA_OBJ_DIR)/media-ioc-*.xml | sed -r s,"^.*/(.*).xml.*","\1",` ; \
304 echo "<!ENTITY $$entity \"<link" \ 304 echo "<!ENTITY $$entity \"<link" \
305 "linkend='$$id'><constant>$$ident</constant></link>\">" \ 305 "linkend='$$id'><constant>$$ident</constant></link>\">" \
306 >>$@ ; \ 306 >>$@ ; \
diff --git a/Documentation/DocBook/media/dvb/audio.xml b/Documentation/DocBook/media/dvb/audio.xml
index d64386237207..a7ea56c71a27 100644
--- a/Documentation/DocBook/media/dvb/audio.xml
+++ b/Documentation/DocBook/media/dvb/audio.xml
@@ -1,12 +1,16 @@
1<title>DVB Audio Device</title> 1<title>DVB Audio Device</title>
2<para>The DVB audio device controls the MPEG2 audio decoder of the DVB hardware. It 2<para>The DVB audio device controls the MPEG2 audio decoder of the DVB hardware. It
3can be accessed through <emphasis role="tt">/dev/dvb/adapter0/audio0</emphasis>. Data types and and 3can be accessed through <emphasis role="tt">/dev/dvb/adapter0/audio0</emphasis>. Data types and and
4ioctl definitions can be accessed by including <emphasis role="tt">linux/dvb/video.h</emphasis> in your 4ioctl definitions can be accessed by including <emphasis role="tt">linux/dvb/audio.h</emphasis> in your
5application. 5application.
6</para> 6</para>
7<para>Please note that some DVB cards don&#8217;t have their own MPEG decoder, which results in 7<para>Please note that some DVB cards don&#8217;t have their own MPEG decoder, which results in
8the omission of the audio and video device. 8the omission of the audio and video device.
9</para> 9</para>
10<para>
11These ioctls were also used by V4L2 to control MPEG decoders implemented in V4L2. The use
12of these ioctls for that purpose has been made obsolete and proper V4L2 ioctls or controls
13have been created to replace that functionality.</para>
10 14
11<section id="audio_data_types"> 15<section id="audio_data_types">
12<title>Audio Data Types</title> 16<title>Audio Data Types</title>
@@ -558,6 +562,8 @@ role="subsection"><title>AUDIO_SELECT_SOURCE</title>
558role="subsection"><title>AUDIO_SET_MUTE</title> 562role="subsection"><title>AUDIO_SET_MUTE</title>
559<para>DESCRIPTION 563<para>DESCRIPTION
560</para> 564</para>
565<para>This ioctl is for DVB devices only. To control a V4L2 decoder use the V4L2
566&VIDIOC-DECODER-CMD; with the <constant>V4L2_DEC_CMD_START_MUTE_AUDIO</constant> flag instead.</para>
561<informaltable><tgroup cols="1"><tbody><row><entry 567<informaltable><tgroup cols="1"><tbody><row><entry
562 align="char"> 568 align="char">
563<para>This ioctl call asks the audio device to mute the stream that is currently being 569<para>This ioctl call asks the audio device to mute the stream that is currently being
@@ -730,6 +736,8 @@ role="subsection"><title>AUDIO_SET_BYPASS_MODE</title>
730role="subsection"><title>AUDIO_CHANNEL_SELECT</title> 736role="subsection"><title>AUDIO_CHANNEL_SELECT</title>
731<para>DESCRIPTION 737<para>DESCRIPTION
732</para> 738</para>
739<para>This ioctl is for DVB devices only. To control a V4L2 decoder use the V4L2
740<constant>V4L2_CID_MPEG_AUDIO_DEC_PLAYBACK</constant> control instead.</para>
733<informaltable><tgroup cols="1"><tbody><row><entry 741<informaltable><tgroup cols="1"><tbody><row><entry
734 align="char"> 742 align="char">
735<para>This ioctl call asks the Audio Device to select the requested channel if possible.</para> 743<para>This ioctl call asks the Audio Device to select the requested channel if possible.</para>
@@ -772,6 +780,109 @@ role="subsection"><title>AUDIO_CHANNEL_SELECT</title>
772 </row></tbody></tgroup></informaltable> 780 </row></tbody></tgroup></informaltable>
773&return-value-dvb; 781&return-value-dvb;
774 782
783</section><section id="AUDIO_BILINGUAL_CHANNEL_SELECT"
784role="subsection"><title>AUDIO_BILINGUAL_CHANNEL_SELECT</title>
785<para>DESCRIPTION
786</para>
787<para>This ioctl is obsolete. Do not use in new drivers. It has been replaced by
788the V4L2 <constant>V4L2_CID_MPEG_AUDIO_DEC_MULTILINGUAL_PLAYBACK</constant> control
789for MPEG decoders controlled through V4L2.</para>
790<informaltable><tgroup cols="1"><tbody><row><entry
791 align="char">
792<para>This ioctl call asks the Audio Device to select the requested channel for bilingual streams if possible.</para>
793</entry>
794 </row></tbody></tgroup></informaltable>
795<para>SYNOPSIS
796</para>
797<informaltable><tgroup cols="1"><tbody><row><entry
798 align="char">
799<para>int ioctl(int fd, int request =
800 AUDIO_BILINGUAL_CHANNEL_SELECT, audio_channel_select_t);</para>
801</entry>
802 </row></tbody></tgroup></informaltable>
803<para>PARAMETERS
804</para>
805<informaltable><tgroup cols="2"><tbody><row><entry
806 align="char">
807<para>int fd</para>
808</entry><entry
809 align="char">
810<para>File descriptor returned by a previous call to open().</para>
811</entry>
812 </row><row><entry
813 align="char">
814<para>int request</para>
815</entry><entry
816 align="char">
817<para>Equals AUDIO_BILINGUAL_CHANNEL_SELECT for this
818 command.</para>
819</entry>
820 </row><row><entry
821 align="char">
822<para>audio_channel_select_t
823ch</para>
824</entry><entry
825 align="char">
826<para>Select the output format of the audio (mono left/right,
827 stereo).</para>
828</entry>
829 </row>
830</tbody></tgroup></informaltable>
831&return-value-dvb;
832
833</section><section id="AUDIO_GET_PTS"
834role="subsection"><title>AUDIO_GET_PTS</title>
835<para>DESCRIPTION
836</para>
837<para>This ioctl is obsolete. Do not use in new drivers. If you need this functionality,
838then please contact the linux-media mailing list (&v4l-ml;).</para>
839<informaltable><tgroup cols="1"><tbody><row><entry
840 align="char">
841<para>This ioctl call asks the Audio Device to return the current PTS timestamp.</para>
842</entry>
843 </row></tbody></tgroup></informaltable>
844<para>SYNOPSIS
845</para>
846<informaltable><tgroup cols="1"><tbody><row><entry
847 align="char">
848<para>int ioctl(int fd, int request =
849 AUDIO_GET_PTS, __u64 *pts);</para>
850</entry>
851 </row></tbody></tgroup></informaltable>
852<para>PARAMETERS
853</para>
854<informaltable><tgroup cols="2"><tbody><row><entry
855 align="char">
856<para>int fd</para>
857</entry><entry
858 align="char">
859<para>File descriptor returned by a previous call to open().</para>
860</entry>
861 </row><row><entry
862 align="char">
863<para>int request</para>
864</entry><entry
865 align="char">
866<para>Equals AUDIO_GET_PTS for this
867 command.</para>
868</entry>
869 </row><row><entry
870 align="char">
871<para>__u64 *pts
872</para>
873</entry><entry
874 align="char">
875<para>Returns the 33-bit timestamp as defined in ITU T-REC-H.222.0 / ISO/IEC 13818-1.
876</para>
877<para>
878The PTS should belong to the currently played
879frame if possible, but may also be a value close to it
880like the PTS of the last decoded frame or the last PTS
881extracted by the PES parser.</para>
882</entry>
883 </row></tbody></tgroup></informaltable>
884&return-value-dvb;
885
775</section><section id="AUDIO_GET_STATUS" 886</section><section id="AUDIO_GET_STATUS"
776role="subsection"><title>AUDIO_GET_STATUS</title> 887role="subsection"><title>AUDIO_GET_STATUS</title>
777<para>DESCRIPTION 888<para>DESCRIPTION
diff --git a/Documentation/DocBook/media/dvb/ca.xml b/Documentation/DocBook/media/dvb/ca.xml
index 5c4adb44b1c1..85eaf4fe2931 100644
--- a/Documentation/DocBook/media/dvb/ca.xml
+++ b/Documentation/DocBook/media/dvb/ca.xml
@@ -226,4 +226,357 @@ typedef struct ca_pid {
226</entry> 226</entry>
227 </row></tbody></tgroup></informaltable> 227 </row></tbody></tgroup></informaltable>
228 </section> 228 </section>
229
230<section id="CA_RESET"
231role="subsection"><title>CA_RESET</title>
232<para>DESCRIPTION
233</para>
234<informaltable><tgroup cols="1"><tbody><row><entry
235 align="char">
236<para>This ioctl is undocumented. Documentation is welcome.</para>
237</entry>
238 </row></tbody></tgroup></informaltable>
239<para>SYNOPSIS
240</para>
241<informaltable><tgroup cols="1"><tbody><row><entry
242 align="char">
243<para>int ioctl(fd, int request = CA_RESET);
244</para>
245</entry>
246 </row></tbody></tgroup></informaltable>
247<para>PARAMETERS
248</para>
249<informaltable><tgroup cols="2"><tbody><row><entry
250 align="char">
251<para>int fd</para>
252</entry><entry
253 align="char">
254<para>File descriptor returned by a previous call to open().</para>
255</entry>
256 </row><row><entry
257 align="char">
258<para>int request</para>
259</entry><entry
260 align="char">
261<para>Equals CA_RESET for this command.</para>
262</entry>
263 </row></tbody></tgroup></informaltable>
264&return-value-dvb;
265</section>
266
267<section id="CA_GET_CAP"
268role="subsection"><title>CA_GET_CAP</title>
269<para>DESCRIPTION
270</para>
271<informaltable><tgroup cols="1"><tbody><row><entry
272 align="char">
273<para>This ioctl is undocumented. Documentation is welcome.</para>
274</entry>
275 </row></tbody></tgroup></informaltable>
276<para>SYNOPSIS
277</para>
278<informaltable><tgroup cols="1"><tbody><row><entry
279 align="char">
280<para>int ioctl(fd, int request = CA_GET_CAP,
281 ca_caps_t *);</para>
282</entry>
283 </row></tbody></tgroup></informaltable>
284<para>PARAMETERS
285</para>
286<informaltable><tgroup cols="2"><tbody><row><entry
287 align="char">
288<para>int fd</para>
289</entry><entry
290 align="char">
291<para>File descriptor returned by a previous call to open().</para>
292</entry>
293 </row><row><entry
294 align="char">
295<para>int request</para>
296</entry><entry
297 align="char">
298<para>Equals CA_GET_CAP for this command.</para>
299</entry>
300 </row><row><entry
301 align="char">
302<para>ca_caps_t *
303</para>
304</entry><entry
305 align="char">
306<para>Undocumented.</para>
307</entry>
308 </row></tbody></tgroup></informaltable>
309&return-value-dvb;
310</section>
311
312<section id="CA_GET_SLOT_INFO"
313role="subsection"><title>CA_GET_SLOT_INFO</title>
314<para>DESCRIPTION
315</para>
316<informaltable><tgroup cols="1"><tbody><row><entry
317 align="char">
318<para>This ioctl is undocumented. Documentation is welcome.</para>
319</entry>
320 </row></tbody></tgroup></informaltable>
321<para>SYNOPSIS
322</para>
323<informaltable><tgroup cols="1"><tbody><row><entry
324 align="char">
325<para>int ioctl(fd, int request = CA_GET_SLOT_INFO,
326 ca_slot_info_t *);</para>
327</entry>
328 </row></tbody></tgroup></informaltable>
329<para>PARAMETERS
330</para>
331<informaltable><tgroup cols="2"><tbody><row><entry
332 align="char">
333<para>int fd</para>
334</entry><entry
335 align="char">
336<para>File descriptor returned by a previous call to open().</para>
337</entry>
338 </row><row><entry
339 align="char">
340<para>int request</para>
341</entry><entry
342 align="char">
343<para>Equals CA_GET_SLOT_INFO for this command.</para>
344</entry>
345 </row><row><entry
346 align="char">
347<para>ca_slot_info_t *
348</para>
349</entry><entry
350 align="char">
351<para>Undocumented.</para>
352</entry>
353 </row></tbody></tgroup></informaltable>
354&return-value-dvb;
355</section>
356
357<section id="CA_GET_DESCR_INFO"
358role="subsection"><title>CA_GET_DESCR_INFO</title>
359<para>DESCRIPTION
360</para>
361<informaltable><tgroup cols="1"><tbody><row><entry
362 align="char">
363<para>This ioctl is undocumented. Documentation is welcome.</para>
364</entry>
365 </row></tbody></tgroup></informaltable>
366<para>SYNOPSIS
367</para>
368<informaltable><tgroup cols="1"><tbody><row><entry
369 align="char">
370<para>int ioctl(fd, int request = CA_GET_DESCR_INFO,
371 ca_descr_info_t *);</para>
372</entry>
373 </row></tbody></tgroup></informaltable>
374<para>PARAMETERS
375</para>
376<informaltable><tgroup cols="2"><tbody><row><entry
377 align="char">
378<para>int fd</para>
379</entry><entry
380 align="char">
381<para>File descriptor returned by a previous call to open().</para>
382</entry>
383 </row><row><entry
384 align="char">
385<para>int request</para>
386</entry><entry
387 align="char">
388<para>Equals CA_GET_DESCR_INFO for this command.</para>
389</entry>
390 </row><row><entry
391 align="char">
392<para>ca_descr_info_t *
393</para>
394</entry><entry
395 align="char">
396<para>Undocumented.</para>
397</entry>
398 </row></tbody></tgroup></informaltable>
399&return-value-dvb;
400</section>
401
402<section id="CA_GET_MSG"
403role="subsection"><title>CA_GET_MSG</title>
404<para>DESCRIPTION
405</para>
406<informaltable><tgroup cols="1"><tbody><row><entry
407 align="char">
408<para>This ioctl is undocumented. Documentation is welcome.</para>
409</entry>
410 </row></tbody></tgroup></informaltable>
411<para>SYNOPSIS
412</para>
413<informaltable><tgroup cols="1"><tbody><row><entry
414 align="char">
415<para>int ioctl(fd, int request = CA_GET_MSG,
416 ca_msg_t *);</para>
417</entry>
418 </row></tbody></tgroup></informaltable>
419<para>PARAMETERS
420</para>
421<informaltable><tgroup cols="2"><tbody><row><entry
422 align="char">
423<para>int fd</para>
424</entry><entry
425 align="char">
426<para>File descriptor returned by a previous call to open().</para>
427</entry>
428 </row><row><entry
429 align="char">
430<para>int request</para>
431</entry><entry
432 align="char">
433<para>Equals CA_GET_MSG for this command.</para>
434</entry>
435 </row><row><entry
436 align="char">
437<para>ca_msg_t *
438</para>
439</entry><entry
440 align="char">
441<para>Undocumented.</para>
442</entry>
443 </row></tbody></tgroup></informaltable>
444&return-value-dvb;
445</section>
446
447<section id="CA_SEND_MSG"
448role="subsection"><title>CA_SEND_MSG</title>
449<para>DESCRIPTION
450</para>
451<informaltable><tgroup cols="1"><tbody><row><entry
452 align="char">
453<para>This ioctl is undocumented. Documentation is welcome.</para>
454</entry>
455 </row></tbody></tgroup></informaltable>
456<para>SYNOPSIS
457</para>
458<informaltable><tgroup cols="1"><tbody><row><entry
459 align="char">
460<para>int ioctl(fd, int request = CA_SEND_MSG,
461 ca_msg_t *);</para>
462</entry>
463 </row></tbody></tgroup></informaltable>
464<para>PARAMETERS
465</para>
466<informaltable><tgroup cols="2"><tbody><row><entry
467 align="char">
468<para>int fd</para>
469</entry><entry
470 align="char">
471<para>File descriptor returned by a previous call to open().</para>
472</entry>
473 </row><row><entry
474 align="char">
475<para>int request</para>
476</entry><entry
477 align="char">
478<para>Equals CA_SEND_MSG for this command.</para>
479</entry>
480 </row><row><entry
481 align="char">
482<para>ca_msg_t *
483</para>
484</entry><entry
485 align="char">
486<para>Undocumented.</para>
487</entry>
488 </row></tbody></tgroup></informaltable>
489&return-value-dvb;
490</section>
491
492<section id="CA_SET_DESCR"
493role="subsection"><title>CA_SET_DESCR</title>
494<para>DESCRIPTION
495</para>
496<informaltable><tgroup cols="1"><tbody><row><entry
497 align="char">
498<para>This ioctl is undocumented. Documentation is welcome.</para>
499</entry>
500 </row></tbody></tgroup></informaltable>
501<para>SYNOPSIS
502</para>
503<informaltable><tgroup cols="1"><tbody><row><entry
504 align="char">
505<para>int ioctl(fd, int request = CA_SET_DESCR,
506 ca_descr_t *);</para>
507</entry>
508 </row></tbody></tgroup></informaltable>
509<para>PARAMETERS
510</para>
511<informaltable><tgroup cols="2"><tbody><row><entry
512 align="char">
513<para>int fd</para>
514</entry><entry
515 align="char">
516<para>File descriptor returned by a previous call to open().</para>
517</entry>
518 </row><row><entry
519 align="char">
520<para>int request</para>
521</entry><entry
522 align="char">
523<para>Equals CA_SET_DESCR for this command.</para>
524</entry>
525 </row><row><entry
526 align="char">
527<para>ca_descr_t *
528</para>
529</entry><entry
530 align="char">
531<para>Undocumented.</para>
532</entry>
533 </row></tbody></tgroup></informaltable>
534&return-value-dvb;
535</section>
536
537<section id="CA_SET_PID"
538role="subsection"><title>CA_SET_PID</title>
539<para>DESCRIPTION
540</para>
541<informaltable><tgroup cols="1"><tbody><row><entry
542 align="char">
543<para>This ioctl is undocumented. Documentation is welcome.</para>
544</entry>
545 </row></tbody></tgroup></informaltable>
546<para>SYNOPSIS
547</para>
548<informaltable><tgroup cols="1"><tbody><row><entry
549 align="char">
550<para>int ioctl(fd, int request = CA_SET_PID,
551 ca_pid_t *);</para>
552</entry>
553 </row></tbody></tgroup></informaltable>
554<para>PARAMETERS
555</para>
556<informaltable><tgroup cols="2"><tbody><row><entry
557 align="char">
558<para>int fd</para>
559</entry><entry
560 align="char">
561<para>File descriptor returned by a previous call to open().</para>
562</entry>
563 </row><row><entry
564 align="char">
565<para>int request</para>
566</entry><entry
567 align="char">
568<para>Equals CA_SET_PID for this command.</para>
569</entry>
570 </row><row><entry
571 align="char">
572<para>ca_pid_t *
573</para>
574</entry><entry
575 align="char">
576<para>Undocumented.</para>
577</entry>
578 </row></tbody></tgroup></informaltable>
579&return-value-dvb;
580</section>
581
229</section> 582</section>
diff --git a/Documentation/DocBook/media/dvb/demux.xml b/Documentation/DocBook/media/dvb/demux.xml
index 37c17908aa40..86de89cfbd67 100644
--- a/Documentation/DocBook/media/dvb/demux.xml
+++ b/Documentation/DocBook/media/dvb/demux.xml
@@ -899,4 +899,232 @@ typedef enum {
899<para>Invalid stc number.</para> 899<para>Invalid stc number.</para>
900</entry> 900</entry>
901 </row></tbody></tgroup></informaltable> 901 </row></tbody></tgroup></informaltable>
902 </section></section> 902 </section>
903
904<section id="DMX_GET_PES_PIDS"
905role="subsection"><title>DMX_GET_PES_PIDS</title>
906<para>DESCRIPTION
907</para>
908<informaltable><tgroup cols="1"><tbody><row><entry
909 align="char">
910<para>This ioctl is undocumented. Documentation is welcome.</para>
911</entry>
912 </row></tbody></tgroup></informaltable>
913<para>SYNOPSIS
914</para>
915<informaltable><tgroup cols="1"><tbody><row><entry
916 align="char">
917<para>int ioctl(fd, int request = DMX_GET_PES_PIDS,
918 __u16[5]);</para>
919</entry>
920 </row></tbody></tgroup></informaltable>
921<para>PARAMETERS
922</para>
923<informaltable><tgroup cols="2"><tbody><row><entry
924 align="char">
925<para>int fd</para>
926</entry><entry
927 align="char">
928<para>File descriptor returned by a previous call to open().</para>
929</entry>
930 </row><row><entry
931 align="char">
932<para>int request</para>
933</entry><entry
934 align="char">
935<para>Equals DMX_GET_PES_PIDS for this command.</para>
936</entry>
937 </row><row><entry
938 align="char">
939<para>__u16[5]
940</para>
941</entry><entry
942 align="char">
943<para>Undocumented.</para>
944</entry>
945 </row></tbody></tgroup></informaltable>
946&return-value-dvb;
947</section>
948
949<section id="DMX_GET_CAPS"
950role="subsection"><title>DMX_GET_CAPS</title>
951<para>DESCRIPTION
952</para>
953<informaltable><tgroup cols="1"><tbody><row><entry
954 align="char">
955<para>This ioctl is undocumented. Documentation is welcome.</para>
956</entry>
957 </row></tbody></tgroup></informaltable>
958<para>SYNOPSIS
959</para>
960<informaltable><tgroup cols="1"><tbody><row><entry
961 align="char">
962<para>int ioctl(fd, int request = DMX_GET_CAPS,
963 dmx_caps_t *);</para>
964</entry>
965 </row></tbody></tgroup></informaltable>
966<para>PARAMETERS
967</para>
968<informaltable><tgroup cols="2"><tbody><row><entry
969 align="char">
970<para>int fd</para>
971</entry><entry
972 align="char">
973<para>File descriptor returned by a previous call to open().</para>
974</entry>
975 </row><row><entry
976 align="char">
977<para>int request</para>
978</entry><entry
979 align="char">
980<para>Equals DMX_GET_CAPS for this command.</para>
981</entry>
982 </row><row><entry
983 align="char">
984<para>dmx_caps_t *
985</para>
986</entry><entry
987 align="char">
988<para>Undocumented.</para>
989</entry>
990 </row></tbody></tgroup></informaltable>
991&return-value-dvb;
992</section>
993
994<section id="DMX_SET_SOURCE"
995role="subsection"><title>DMX_SET_SOURCE</title>
996<para>DESCRIPTION
997</para>
998<informaltable><tgroup cols="1"><tbody><row><entry
999 align="char">
1000<para>This ioctl is undocumented. Documentation is welcome.</para>
1001</entry>
1002 </row></tbody></tgroup></informaltable>
1003<para>SYNOPSIS
1004</para>
1005<informaltable><tgroup cols="1"><tbody><row><entry
1006 align="char">
1007<para>int ioctl(fd, int request = DMX_SET_SOURCE,
1008 dmx_source_t *);</para>
1009</entry>
1010 </row></tbody></tgroup></informaltable>
1011<para>PARAMETERS
1012</para>
1013<informaltable><tgroup cols="2"><tbody><row><entry
1014 align="char">
1015<para>int fd</para>
1016</entry><entry
1017 align="char">
1018<para>File descriptor returned by a previous call to open().</para>
1019</entry>
1020 </row><row><entry
1021 align="char">
1022<para>int request</para>
1023</entry><entry
1024 align="char">
1025<para>Equals DMX_SET_SOURCE for this command.</para>
1026</entry>
1027 </row><row><entry
1028 align="char">
1029<para>dmx_source_t *
1030</para>
1031</entry><entry
1032 align="char">
1033<para>Undocumented.</para>
1034</entry>
1035 </row></tbody></tgroup></informaltable>
1036&return-value-dvb;
1037</section>
1038
1039<section id="DMX_ADD_PID"
1040role="subsection"><title>DMX_ADD_PID</title>
1041<para>DESCRIPTION
1042</para>
1043<informaltable><tgroup cols="1"><tbody><row><entry
1044 align="char">
1045<para>This ioctl is undocumented. Documentation is welcome.</para>
1046</entry>
1047 </row></tbody></tgroup></informaltable>
1048<para>SYNOPSIS
1049</para>
1050<informaltable><tgroup cols="1"><tbody><row><entry
1051 align="char">
1052<para>int ioctl(fd, int request = DMX_ADD_PID,
1053 __u16 *);</para>
1054</entry>
1055 </row></tbody></tgroup></informaltable>
1056<para>PARAMETERS
1057</para>
1058<informaltable><tgroup cols="2"><tbody><row><entry
1059 align="char">
1060<para>int fd</para>
1061</entry><entry
1062 align="char">
1063<para>File descriptor returned by a previous call to open().</para>
1064</entry>
1065 </row><row><entry
1066 align="char">
1067<para>int request</para>
1068</entry><entry
1069 align="char">
1070<para>Equals DMX_ADD_PID for this command.</para>
1071</entry>
1072 </row><row><entry
1073 align="char">
1074<para>__u16 *
1075</para>
1076</entry><entry
1077 align="char">
1078<para>Undocumented.</para>
1079</entry>
1080 </row></tbody></tgroup></informaltable>
1081&return-value-dvb;
1082</section>
1083
1084<section id="DMX_REMOVE_PID"
1085role="subsection"><title>DMX_REMOVE_PID</title>
1086<para>DESCRIPTION
1087</para>
1088<informaltable><tgroup cols="1"><tbody><row><entry
1089 align="char">
1090<para>This ioctl is undocumented. Documentation is welcome.</para>
1091</entry>
1092 </row></tbody></tgroup></informaltable>
1093<para>SYNOPSIS
1094</para>
1095<informaltable><tgroup cols="1"><tbody><row><entry
1096 align="char">
1097<para>int ioctl(fd, int request = DMX_REMOVE_PID,
1098 __u16 *);</para>
1099</entry>
1100 </row></tbody></tgroup></informaltable>
1101<para>PARAMETERS
1102</para>
1103<informaltable><tgroup cols="2"><tbody><row><entry
1104 align="char">
1105<para>int fd</para>
1106</entry><entry
1107 align="char">
1108<para>File descriptor returned by a previous call to open().</para>
1109</entry>
1110 </row><row><entry
1111 align="char">
1112<para>int request</para>
1113</entry><entry
1114 align="char">
1115<para>Equals DMX_REMOVE_PID for this command.</para>
1116</entry>
1117 </row><row><entry
1118 align="char">
1119<para>__u16 *
1120</para>
1121</entry><entry
1122 align="char">
1123<para>Undocumented.</para>
1124</entry>
1125 </row></tbody></tgroup></informaltable>
1126&return-value-dvb;
1127</section>
1128
1129
1130</section>
diff --git a/Documentation/DocBook/media/dvb/dvbapi.xml b/Documentation/DocBook/media/dvb/dvbapi.xml
index 2ab6ddcfc4e0..757488b24f4f 100644
--- a/Documentation/DocBook/media/dvb/dvbapi.xml
+++ b/Documentation/DocBook/media/dvb/dvbapi.xml
@@ -28,7 +28,7 @@
28 <holder>Convergence GmbH</holder> 28 <holder>Convergence GmbH</holder>
29</copyright> 29</copyright>
30<copyright> 30<copyright>
31 <year>2009-2011</year> 31 <year>2009-2012</year>
32 <holder>Mauro Carvalho Chehab</holder> 32 <holder>Mauro Carvalho Chehab</holder>
33</copyright> 33</copyright>
34 34
@@ -84,7 +84,7 @@ Added ISDB-T test originally written by Patrick Boettcher
84 84
85 85
86<title>LINUX DVB API</title> 86<title>LINUX DVB API</title>
87<subtitle>Version 5.2</subtitle> 87<subtitle>Version 5.8</subtitle>
88<!-- ADD THE CHAPTERS HERE --> 88<!-- ADD THE CHAPTERS HERE -->
89 <chapter id="dvb_introdution"> 89 <chapter id="dvb_introdution">
90 &sub-intro; 90 &sub-intro;
diff --git a/Documentation/DocBook/media/dvb/dvbproperty.xml b/Documentation/DocBook/media/dvb/dvbproperty.xml
index e633c097a8d1..957e3acaae8e 100644
--- a/Documentation/DocBook/media/dvb/dvbproperty.xml
+++ b/Documentation/DocBook/media/dvb/dvbproperty.xml
@@ -194,6 +194,7 @@ get/set up to 64 properties. The actual meaning of each property is described on
194 APSK_16, 194 APSK_16,
195 APSK_32, 195 APSK_32,
196 DQPSK, 196 DQPSK,
197 QAM_4_NR,
197 } fe_modulation_t; 198 } fe_modulation_t;
198</programlisting> 199</programlisting>
199 </section> 200 </section>
@@ -265,6 +266,7 @@ typedef enum fe_code_rate {
265 FEC_AUTO, 266 FEC_AUTO,
266 FEC_3_5, 267 FEC_3_5,
267 FEC_9_10, 268 FEC_9_10,
269 FEC_2_5,
268} fe_code_rate_t; 270} fe_code_rate_t;
269 </programlisting> 271 </programlisting>
270 <para>which correspond to error correction rates of 1/2, 2/3, etc., 272 <para>which correspond to error correction rates of 1/2, 2/3, etc.,
@@ -351,7 +353,7 @@ typedef enum fe_delivery_system {
351 SYS_ISDBC, 353 SYS_ISDBC,
352 SYS_ATSC, 354 SYS_ATSC,
353 SYS_ATSCMH, 355 SYS_ATSCMH,
354 SYS_DMBTH, 356 SYS_DTMB,
355 SYS_CMMB, 357 SYS_CMMB,
356 SYS_DAB, 358 SYS_DAB,
357 SYS_DVBT2, 359 SYS_DVBT2,
@@ -567,28 +569,33 @@ typedef enum fe_delivery_system {
567 <title><constant>DTV_ATSCMH_RS_FRAME_MODE</constant></title> 569 <title><constant>DTV_ATSCMH_RS_FRAME_MODE</constant></title>
568 <para>RS frame mode.</para> 570 <para>RS frame mode.</para>
569 <para>Possible values are:</para> 571 <para>Possible values are:</para>
572 <para id="atscmh-rs-frame-mode">
570<programlisting> 573<programlisting>
571typedef enum atscmh_rs_frame_mode { 574typedef enum atscmh_rs_frame_mode {
572 ATSCMH_RSFRAME_PRI_ONLY = 0, 575 ATSCMH_RSFRAME_PRI_ONLY = 0,
573 ATSCMH_RSFRAME_PRI_SEC = 1, 576 ATSCMH_RSFRAME_PRI_SEC = 1,
574} atscmh_rs_frame_mode_t; 577} atscmh_rs_frame_mode_t;
575</programlisting> 578</programlisting>
579 </para>
576 </section> 580 </section>
577 <section id="DTV-ATSCMH-RS-FRAME-ENSEMBLE"> 581 <section id="DTV-ATSCMH-RS-FRAME-ENSEMBLE">
578 <title><constant>DTV_ATSCMH_RS_FRAME_ENSEMBLE</constant></title> 582 <title><constant>DTV_ATSCMH_RS_FRAME_ENSEMBLE</constant></title>
579 <para>RS frame ensemble.</para> 583 <para>RS frame ensemble.</para>
580 <para>Possible values are:</para> 584 <para>Possible values are:</para>
585 <para id="atscmh-rs-frame-ensemble">
581<programlisting> 586<programlisting>
582typedef enum atscmh_rs_frame_ensemble { 587typedef enum atscmh_rs_frame_ensemble {
583 ATSCMH_RSFRAME_ENS_PRI = 0, 588 ATSCMH_RSFRAME_ENS_PRI = 0,
584 ATSCMH_RSFRAME_ENS_SEC = 1, 589 ATSCMH_RSFRAME_ENS_SEC = 1,
585} atscmh_rs_frame_ensemble_t; 590} atscmh_rs_frame_ensemble_t;
586</programlisting> 591</programlisting>
592 </para>
587 </section> 593 </section>
588 <section id="DTV-ATSCMH-RS-CODE-MODE-PRI"> 594 <section id="DTV-ATSCMH-RS-CODE-MODE-PRI">
589 <title><constant>DTV_ATSCMH_RS_CODE_MODE_PRI</constant></title> 595 <title><constant>DTV_ATSCMH_RS_CODE_MODE_PRI</constant></title>
590 <para>RS code mode (primary).</para> 596 <para>RS code mode (primary).</para>
591 <para>Possible values are:</para> 597 <para>Possible values are:</para>
598 <para id="atscmh-rs-code-mode">
592<programlisting> 599<programlisting>
593typedef enum atscmh_rs_code_mode { 600typedef enum atscmh_rs_code_mode {
594 ATSCMH_RSCODE_211_187 = 0, 601 ATSCMH_RSCODE_211_187 = 0,
@@ -596,6 +603,7 @@ typedef enum atscmh_rs_code_mode {
596 ATSCMH_RSCODE_235_187 = 2, 603 ATSCMH_RSCODE_235_187 = 2,
597} atscmh_rs_code_mode_t; 604} atscmh_rs_code_mode_t;
598</programlisting> 605</programlisting>
606 </para>
599 </section> 607 </section>
600 <section id="DTV-ATSCMH-RS-CODE-MODE-SEC"> 608 <section id="DTV-ATSCMH-RS-CODE-MODE-SEC">
601 <title><constant>DTV_ATSCMH_RS_CODE_MODE_SEC</constant></title> 609 <title><constant>DTV_ATSCMH_RS_CODE_MODE_SEC</constant></title>
@@ -613,23 +621,27 @@ typedef enum atscmh_rs_code_mode {
613 <title><constant>DTV_ATSCMH_SCCC_BLOCK_MODE</constant></title> 621 <title><constant>DTV_ATSCMH_SCCC_BLOCK_MODE</constant></title>
614 <para>Series Concatenated Convolutional Code Block Mode.</para> 622 <para>Series Concatenated Convolutional Code Block Mode.</para>
615 <para>Possible values are:</para> 623 <para>Possible values are:</para>
624 <para id="atscmh-sccc-block-mode">
616<programlisting> 625<programlisting>
617typedef enum atscmh_sccc_block_mode { 626typedef enum atscmh_sccc_block_mode {
618 ATSCMH_SCCC_BLK_SEP = 0, 627 ATSCMH_SCCC_BLK_SEP = 0,
619 ATSCMH_SCCC_BLK_COMB = 1, 628 ATSCMH_SCCC_BLK_COMB = 1,
620} atscmh_sccc_block_mode_t; 629} atscmh_sccc_block_mode_t;
621</programlisting> 630</programlisting>
631 </para>
622 </section> 632 </section>
623 <section id="DTV-ATSCMH-SCCC-CODE-MODE-A"> 633 <section id="DTV-ATSCMH-SCCC-CODE-MODE-A">
624 <title><constant>DTV_ATSCMH_SCCC_CODE_MODE_A</constant></title> 634 <title><constant>DTV_ATSCMH_SCCC_CODE_MODE_A</constant></title>
625 <para>Series Concatenated Convolutional Code Rate.</para> 635 <para>Series Concatenated Convolutional Code Rate.</para>
626 <para>Possible values are:</para> 636 <para>Possible values are:</para>
637 <para id="atscmh-sccc-code-mode">
627<programlisting> 638<programlisting>
628typedef enum atscmh_sccc_code_mode { 639typedef enum atscmh_sccc_code_mode {
629 ATSCMH_SCCC_CODE_HLF = 0, 640 ATSCMH_SCCC_CODE_HLF = 0,
630 ATSCMH_SCCC_CODE_QTR = 1, 641 ATSCMH_SCCC_CODE_QTR = 1,
631} atscmh_sccc_code_mode_t; 642} atscmh_sccc_code_mode_t;
632</programlisting> 643</programlisting>
644 </para>
633 </section> 645 </section>
634 <section id="DTV-ATSCMH-SCCC-CODE-MODE-B"> 646 <section id="DTV-ATSCMH-SCCC-CODE-MODE-B">
635 <title><constant>DTV_ATSCMH_SCCC_CODE_MODE_B</constant></title> 647 <title><constant>DTV_ATSCMH_SCCC_CODE_MODE_B</constant></title>
@@ -725,6 +737,9 @@ typedef enum fe_guard_interval {
725 GUARD_INTERVAL_1_128, 737 GUARD_INTERVAL_1_128,
726 GUARD_INTERVAL_19_128, 738 GUARD_INTERVAL_19_128,
727 GUARD_INTERVAL_19_256, 739 GUARD_INTERVAL_19_256,
740 GUARD_INTERVAL_PN420,
741 GUARD_INTERVAL_PN595,
742 GUARD_INTERVAL_PN945,
728} fe_guard_interval_t; 743} fe_guard_interval_t;
729</programlisting> 744</programlisting>
730 745
@@ -733,6 +748,7 @@ typedef enum fe_guard_interval {
733 try to find the correct guard interval (if capable) and will use TMCC to fill 748 try to find the correct guard interval (if capable) and will use TMCC to fill
734 in the missing parameters.</para> 749 in the missing parameters.</para>
735 <para>2) Intervals 1/128, 19/128 and 19/256 are used only for DVB-T2 at present</para> 750 <para>2) Intervals 1/128, 19/128 and 19/256 are used only for DVB-T2 at present</para>
751 <para>3) DTMB specifies PN420, PN595 and PN945.</para>
736 </section> 752 </section>
737 <section id="DTV-TRANSMISSION-MODE"> 753 <section id="DTV-TRANSMISSION-MODE">
738 <title><constant>DTV_TRANSMISSION_MODE</constant></title> 754 <title><constant>DTV_TRANSMISSION_MODE</constant></title>
@@ -749,6 +765,8 @@ typedef enum fe_transmit_mode {
749 TRANSMISSION_MODE_1K, 765 TRANSMISSION_MODE_1K,
750 TRANSMISSION_MODE_16K, 766 TRANSMISSION_MODE_16K,
751 TRANSMISSION_MODE_32K, 767 TRANSMISSION_MODE_32K,
768 TRANSMISSION_MODE_C1,
769 TRANSMISSION_MODE_C3780,
752} fe_transmit_mode_t; 770} fe_transmit_mode_t;
753</programlisting> 771</programlisting>
754 <para>Notes:</para> 772 <para>Notes:</para>
@@ -760,6 +778,7 @@ typedef enum fe_transmit_mode {
760 use TMCC to fill in the missing parameters.</para> 778 use TMCC to fill in the missing parameters.</para>
761 <para>3) DVB-T specifies 2K and 8K as valid sizes.</para> 779 <para>3) DVB-T specifies 2K and 8K as valid sizes.</para>
762 <para>4) DVB-T2 specifies 1K, 2K, 4K, 8K, 16K and 32K.</para> 780 <para>4) DVB-T2 specifies 1K, 2K, 4K, 8K, 16K and 32K.</para>
781 <para>5) DTMB specifies C1 and C3780.</para>
763 </section> 782 </section>
764 <section id="DTV-HIERARCHY"> 783 <section id="DTV-HIERARCHY">
765 <title><constant>DTV_HIERARCHY</constant></title> 784 <title><constant>DTV_HIERARCHY</constant></title>
@@ -774,17 +793,28 @@ typedef enum fe_hierarchy {
774 } fe_hierarchy_t; 793 } fe_hierarchy_t;
775 </programlisting> 794 </programlisting>
776 </section> 795 </section>
777 <section id="DTV-ISDBS-TS-ID"> 796 <section id="DTV-STREAM-ID">
778 <title><constant>DTV_ISDBS_TS_ID</constant></title> 797 <title><constant>DTV_STREAM_ID</constant></title>
779 <para>Currently unused.</para> 798 <para>DVB-S2, DVB-T2 and ISDB-S support the transmission of several
799 streams on a single transport stream.
800 This property enables the DVB driver to handle substream filtering,
801 when supported by the hardware.
802 By default, substream filtering is disabled.
803 </para><para>
804 For DVB-S2 and DVB-T2, the valid substream id range is from 0 to 255.
805 </para><para>
806 For ISDB, the valid substream id range is from 1 to 65535.
807 </para><para>
808 To disable it, you should use the special macro NO_STREAM_ID_FILTER.
809 </para><para>
810 Note: any value outside the id range also disables filtering.
811 </para>
780 </section> 812 </section>
781 <section id="DTV-DVBT2-PLP-ID"> 813 <section id="DTV-DVBT2-PLP-ID-LEGACY">
782 <title><constant>DTV_DVBT2_PLP_ID</constant></title> 814 <title><constant>DTV_DVBT2_PLP_ID_LEGACY</constant></title>
783 <para>DVB-T2 supports Physical Layer Pipes (PLP) to allow transmission of 815 <para>Obsolete, replaced with DTV_STREAM_ID.</para>
784 many data types via a single multiplex. The API will soon support this
785 at which point this section will be expanded.</para>
786 </section> 816 </section>
787 <section id="DTV_ENUM_DELSYS"> 817 <section id="DTV-ENUM-DELSYS">
788 <title><constant>DTV_ENUM_DELSYS</constant></title> 818 <title><constant>DTV_ENUM_DELSYS</constant></title>
789 <para>A Multi standard frontend needs to advertise the delivery systems provided. 819 <para>A Multi standard frontend needs to advertise the delivery systems provided.
790 Applications need to enumerate the provided delivery systems, before using 820 Applications need to enumerate the provided delivery systems, before using
@@ -796,6 +826,29 @@ typedef enum fe_hierarchy {
796 FE_GET_INFO. In the case of a legacy frontend, the result is just the same 826 FE_GET_INFO. In the case of a legacy frontend, the result is just the same
797 as with FE_GET_INFO, but in a more structured format </para> 827 as with FE_GET_INFO, but in a more structured format </para>
798 </section> 828 </section>
829 <section id="DTV-INTERLEAVING">
830 <title><constant>DTV_INTERLEAVING</constant></title>
831 <para id="fe-interleaving">Interleaving mode</para>
832 <programlisting>
833enum fe_interleaving {
834 INTERLEAVING_NONE,
835 INTERLEAVING_AUTO,
836 INTERLEAVING_240,
837 INTERLEAVING_720,
838};
839 </programlisting>
840 </section>
841 <section id="DTV-LNA">
842 <title><constant>DTV_LNA</constant></title>
843 <para>Low-noise amplifier.</para>
844 <para>Hardware might offer controllable LNA which can be set manually
845 using that parameter. Usually LNA could be found only from
846 terrestrial devices if at all.</para>
847 <para>Possible values: 0, 1, LNA_AUTO</para>
848 <para>0, LNA off</para>
849 <para>1, LNA on</para>
850 <para>use the special macro LNA_AUTO to set LNA auto</para>
851 </section>
799</section> 852</section>
800 <section id="frontend-property-terrestrial-systems"> 853 <section id="frontend-property-terrestrial-systems">
801 <title>Properties used on terrestrial delivery systems</title> 854 <title>Properties used on terrestrial delivery systems</title>
@@ -816,6 +869,7 @@ typedef enum fe_hierarchy {
816 <listitem><para><link linkend="DTV-GUARD-INTERVAL"><constant>DTV_GUARD_INTERVAL</constant></link></para></listitem> 869 <listitem><para><link linkend="DTV-GUARD-INTERVAL"><constant>DTV_GUARD_INTERVAL</constant></link></para></listitem>
817 <listitem><para><link linkend="DTV-TRANSMISSION-MODE"><constant>DTV_TRANSMISSION_MODE</constant></link></para></listitem> 870 <listitem><para><link linkend="DTV-TRANSMISSION-MODE"><constant>DTV_TRANSMISSION_MODE</constant></link></para></listitem>
818 <listitem><para><link linkend="DTV-HIERARCHY"><constant>DTV_HIERARCHY</constant></link></para></listitem> 871 <listitem><para><link linkend="DTV-HIERARCHY"><constant>DTV_HIERARCHY</constant></link></para></listitem>
872 <listitem><para><link linkend="DTV-LNA"><constant>DTV_LNA</constant></link></para></listitem>
819 </itemizedlist> 873 </itemizedlist>
820 </section> 874 </section>
821 <section id="dvbt2-params"> 875 <section id="dvbt2-params">
@@ -838,7 +892,8 @@ typedef enum fe_hierarchy {
838 <listitem><para><link linkend="DTV-GUARD-INTERVAL"><constant>DTV_GUARD_INTERVAL</constant></link></para></listitem> 892 <listitem><para><link linkend="DTV-GUARD-INTERVAL"><constant>DTV_GUARD_INTERVAL</constant></link></para></listitem>
839 <listitem><para><link linkend="DTV-TRANSMISSION-MODE"><constant>DTV_TRANSMISSION_MODE</constant></link></para></listitem> 893 <listitem><para><link linkend="DTV-TRANSMISSION-MODE"><constant>DTV_TRANSMISSION_MODE</constant></link></para></listitem>
840 <listitem><para><link linkend="DTV-HIERARCHY"><constant>DTV_HIERARCHY</constant></link></para></listitem> 894 <listitem><para><link linkend="DTV-HIERARCHY"><constant>DTV_HIERARCHY</constant></link></para></listitem>
841 <listitem><para><link linkend="DTV-DVBT2-PLP-ID"><constant>DTV_DVBT2_PLP_ID</constant></link></para></listitem> 895 <listitem><para><link linkend="DTV-STREAM-ID"><constant>DTV_STREAM_ID</constant></link></para></listitem>
896 <listitem><para><link linkend="DTV-LNA"><constant>DTV_LNA</constant></link></para></listitem>
842 </itemizedlist> 897 </itemizedlist>
843 </section> 898 </section>
844 <section id="isdbt"> 899 <section id="isdbt">
@@ -925,13 +980,32 @@ typedef enum fe_hierarchy {
925 <listitem><para><link linkend="DTV-ATSCMH-PRC"><constant>DTV_ATSCMH_PRC</constant></link></para></listitem> 980 <listitem><para><link linkend="DTV-ATSCMH-PRC"><constant>DTV_ATSCMH_PRC</constant></link></para></listitem>
926 <listitem><para><link linkend="DTV-ATSCMH-RS-FRAME-MODE"><constant>DTV_ATSCMH_RS_FRAME_MODE</constant></link></para></listitem> 981 <listitem><para><link linkend="DTV-ATSCMH-RS-FRAME-MODE"><constant>DTV_ATSCMH_RS_FRAME_MODE</constant></link></para></listitem>
927 <listitem><para><link linkend="DTV-ATSCMH-RS-FRAME-ENSEMBLE"><constant>DTV_ATSCMH_RS_FRAME_ENSEMBLE</constant></link></para></listitem> 982 <listitem><para><link linkend="DTV-ATSCMH-RS-FRAME-ENSEMBLE"><constant>DTV_ATSCMH_RS_FRAME_ENSEMBLE</constant></link></para></listitem>
928 <listitem><para><link linkend="DTV-ATSCMH-CODE-MODE-PRI"><constant>DTV_ATSCMH_CODE_MODE_PRI</constant></link></para></listitem> 983 <listitem><para><link linkend="DTV-ATSCMH-RS-CODE-MODE-PRI"><constant>DTV_ATSCMH_RS_CODE_MODE_PRI</constant></link></para></listitem>
929 <listitem><para><link linkend="DTV-ATSCMH-CODE-MODE-SEC"><constant>DTV_ATSCMH_CODE_MODE_SEC</constant></link></para></listitem> 984 <listitem><para><link linkend="DTV-ATSCMH-RS-CODE-MODE-SEC"><constant>DTV_ATSCMH_RS_CODE_MODE_SEC</constant></link></para></listitem>
930 <listitem><para><link linkend="DTV-ATSCMH-SCCC-BLOCK-MODE"><constant>DTV_ATSCMH_SCCC_BLOCK_MODE</constant></link></para></listitem> 985 <listitem><para><link linkend="DTV-ATSCMH-SCCC-BLOCK-MODE"><constant>DTV_ATSCMH_SCCC_BLOCK_MODE</constant></link></para></listitem>
931 <listitem><para><link linkend="DTV-ATSCMH-SCCC-CODE_MODE-A"><constant>DTV_ATSCMH_SCCC_CODE_MODE_A</constant></link></para></listitem> 986 <listitem><para><link linkend="DTV-ATSCMH-SCCC-CODE-MODE-A"><constant>DTV_ATSCMH_SCCC_CODE_MODE_A</constant></link></para></listitem>
932 <listitem><para><link linkend="DTV-ATSCMH-SCCC-CODE_MODE-B"><constant>DTV_ATSCMH_SCCC_CODE_MODE_B</constant></link></para></listitem> 987 <listitem><para><link linkend="DTV-ATSCMH-SCCC-CODE-MODE-B"><constant>DTV_ATSCMH_SCCC_CODE_MODE_B</constant></link></para></listitem>
933 <listitem><para><link linkend="DTV-ATSCMH-SCCC-CODE_MODE-C"><constant>DTV_ATSCMH_SCCC_CODE_MODE_C</constant></link></para></listitem> 988 <listitem><para><link linkend="DTV-ATSCMH-SCCC-CODE-MODE-C"><constant>DTV_ATSCMH_SCCC_CODE_MODE_C</constant></link></para></listitem>
934 <listitem><para><link linkend="DTV-ATSCMH-SCCC-CODE_MODE-D"><constant>DTV_ATSCMH_SCCC_CODE_MODE_D</constant></link></para></listitem> 989 <listitem><para><link linkend="DTV-ATSCMH-SCCC-CODE-MODE-D"><constant>DTV_ATSCMH_SCCC_CODE_MODE_D</constant></link></para></listitem>
990 </itemizedlist>
991 </section>
992 <section id="dtmb-params">
993 <title>DTMB delivery system</title>
994 <para>The following parameters are valid for DTMB:</para>
995 <itemizedlist mark='opencircle'>
996 <listitem><para><link linkend="DTV-API-VERSION"><constant>DTV_API_VERSION</constant></link></para></listitem>
997 <listitem><para><link linkend="DTV-DELIVERY-SYSTEM"><constant>DTV_DELIVERY_SYSTEM</constant></link></para></listitem>
998 <listitem><para><link linkend="DTV-TUNE"><constant>DTV_TUNE</constant></link></para></listitem>
999 <listitem><para><link linkend="DTV-CLEAR"><constant>DTV_CLEAR</constant></link></para></listitem>
1000 <listitem><para><link linkend="DTV-FREQUENCY"><constant>DTV_FREQUENCY</constant></link></para></listitem>
1001 <listitem><para><link linkend="DTV-MODULATION"><constant>DTV_MODULATION</constant></link></para></listitem>
1002 <listitem><para><link linkend="DTV-BANDWIDTH-HZ"><constant>DTV_BANDWIDTH_HZ</constant></link></para></listitem>
1003 <listitem><para><link linkend="DTV-INVERSION"><constant>DTV_INVERSION</constant></link></para></listitem>
1004 <listitem><para><link linkend="DTV-INNER-FEC"><constant>DTV_INNER_FEC</constant></link></para></listitem>
1005 <listitem><para><link linkend="DTV-GUARD-INTERVAL"><constant>DTV_GUARD_INTERVAL</constant></link></para></listitem>
1006 <listitem><para><link linkend="DTV-TRANSMISSION-MODE"><constant>DTV_TRANSMISSION_MODE</constant></link></para></listitem>
1007 <listitem><para><link linkend="DTV-INTERLEAVING"><constant>DTV_INTERLEAVING</constant></link></para></listitem>
1008 <listitem><para><link linkend="DTV-LNA"><constant>DTV_LNA</constant></link></para></listitem>
935 </itemizedlist> 1009 </itemizedlist>
936 </section> 1010 </section>
937 </section> 1011 </section>
@@ -952,6 +1026,7 @@ typedef enum fe_hierarchy {
952 <listitem><para><link linkend="DTV-INVERSION"><constant>DTV_INVERSION</constant></link></para></listitem> 1026 <listitem><para><link linkend="DTV-INVERSION"><constant>DTV_INVERSION</constant></link></para></listitem>
953 <listitem><para><link linkend="DTV-SYMBOL-RATE"><constant>DTV_SYMBOL_RATE</constant></link></para></listitem> 1027 <listitem><para><link linkend="DTV-SYMBOL-RATE"><constant>DTV_SYMBOL_RATE</constant></link></para></listitem>
954 <listitem><para><link linkend="DTV-INNER-FEC"><constant>DTV_INNER_FEC</constant></link></para></listitem> 1028 <listitem><para><link linkend="DTV-INNER-FEC"><constant>DTV_INNER_FEC</constant></link></para></listitem>
1029 <listitem><para><link linkend="DTV-LNA"><constant>DTV_LNA</constant></link></para></listitem>
955 </itemizedlist> 1030 </itemizedlist>
956 </section> 1031 </section>
957 <section id="dvbc-annex-b-params"> 1032 <section id="dvbc-annex-b-params">
@@ -966,6 +1041,7 @@ typedef enum fe_hierarchy {
966 <listitem><para><link linkend="DTV-FREQUENCY"><constant>DTV_FREQUENCY</constant></link></para></listitem> 1041 <listitem><para><link linkend="DTV-FREQUENCY"><constant>DTV_FREQUENCY</constant></link></para></listitem>
967 <listitem><para><link linkend="DTV-MODULATION"><constant>DTV_MODULATION</constant></link></para></listitem> 1042 <listitem><para><link linkend="DTV-MODULATION"><constant>DTV_MODULATION</constant></link></para></listitem>
968 <listitem><para><link linkend="DTV-INVERSION"><constant>DTV_INVERSION</constant></link></para></listitem> 1043 <listitem><para><link linkend="DTV-INVERSION"><constant>DTV_INVERSION</constant></link></para></listitem>
1044 <listitem><para><link linkend="DTV-LNA"><constant>DTV_LNA</constant></link></para></listitem>
969 </itemizedlist> 1045 </itemizedlist>
970 </section> 1046 </section>
971 </section> 1047 </section>
@@ -999,6 +1075,7 @@ typedef enum fe_hierarchy {
999 <listitem><para><link linkend="DTV-MODULATION"><constant>DTV_MODULATION</constant></link></para></listitem> 1075 <listitem><para><link linkend="DTV-MODULATION"><constant>DTV_MODULATION</constant></link></para></listitem>
1000 <listitem><para><link linkend="DTV-PILOT"><constant>DTV_PILOT</constant></link></para></listitem> 1076 <listitem><para><link linkend="DTV-PILOT"><constant>DTV_PILOT</constant></link></para></listitem>
1001 <listitem><para><link linkend="DTV-ROLLOFF"><constant>DTV_ROLLOFF</constant></link></para></listitem> 1077 <listitem><para><link linkend="DTV-ROLLOFF"><constant>DTV_ROLLOFF</constant></link></para></listitem>
1078 <listitem><para><link linkend="DTV-STREAM-ID"><constant>DTV_STREAM_ID</constant></link></para></listitem>
1002 </itemizedlist> 1079 </itemizedlist>
1003 </section> 1080 </section>
1004 <section id="turbo-params"> 1081 <section id="turbo-params">
@@ -1021,7 +1098,7 @@ typedef enum fe_hierarchy {
1021 <listitem><para><link linkend="DTV-SYMBOL-RATE"><constant>DTV_SYMBOL_RATE</constant></link></para></listitem> 1098 <listitem><para><link linkend="DTV-SYMBOL-RATE"><constant>DTV_SYMBOL_RATE</constant></link></para></listitem>
1022 <listitem><para><link linkend="DTV-INNER-FEC"><constant>DTV_INNER_FEC</constant></link></para></listitem> 1099 <listitem><para><link linkend="DTV-INNER-FEC"><constant>DTV_INNER_FEC</constant></link></para></listitem>
1023 <listitem><para><link linkend="DTV-VOLTAGE"><constant>DTV_VOLTAGE</constant></link></para></listitem> 1100 <listitem><para><link linkend="DTV-VOLTAGE"><constant>DTV_VOLTAGE</constant></link></para></listitem>
1024 <listitem><para><link linkend="DTV-ISDBS-TS-ID"><constant>DTV_ISDBS_TS_ID</constant></link></para></listitem> 1101 <listitem><para><link linkend="DTV-STREAM-ID"><constant>DTV_STREAM_ID</constant></link></para></listitem>
1025 </itemizedlist> 1102 </itemizedlist>
1026 </section> 1103 </section>
1027 </section> 1104 </section>
diff --git a/Documentation/DocBook/media/dvb/frontend.xml b/Documentation/DocBook/media/dvb/frontend.xml
index aeaed59d0f1f..426c2526a454 100644
--- a/Documentation/DocBook/media/dvb/frontend.xml
+++ b/Documentation/DocBook/media/dvb/frontend.xml
@@ -66,7 +66,7 @@ supported via the new <link linkend="FE_GET_SET_PROPERTY">FE_GET_PROPERTY/FE_GET
66 66
67<para>The usage of this field is deprecated, as it doesn't report all supported standards, and 67<para>The usage of this field is deprecated, as it doesn't report all supported standards, and
68will provide an incomplete information for frontends that support multiple delivery systems. 68will provide an incomplete information for frontends that support multiple delivery systems.
69Please use <link linkend="DTV_ENUM_DELSYS">DTV_ENUM_DELSYS</link> instead.</para> 69Please use <link linkend="DTV-ENUM-DELSYS">DTV_ENUM_DELSYS</link> instead.</para>
70</section> 70</section>
71 71
72<section id="fe-caps-t"> 72<section id="fe-caps-t">
@@ -101,6 +101,7 @@ a specific frontend type.</para>
101 FE_CAN_8VSB = 0x200000, 101 FE_CAN_8VSB = 0x200000,
102 FE_CAN_16VSB = 0x400000, 102 FE_CAN_16VSB = 0x400000,
103 FE_HAS_EXTENDED_CAPS = 0x800000, 103 FE_HAS_EXTENDED_CAPS = 0x800000,
104 FE_CAN_MULTISTREAM = 0x4000000,
104 FE_CAN_TURBO_FEC = 0x8000000, 105 FE_CAN_TURBO_FEC = 0x8000000,
105 FE_CAN_2G_MODULATION = 0x10000000, 106 FE_CAN_2G_MODULATION = 0x10000000,
106 FE_NEEDS_BENDING = 0x20000000, 107 FE_NEEDS_BENDING = 0x20000000,
@@ -207,18 +208,44 @@ spec.</para>
207<para>Several functions of the frontend device use the fe_status data type defined 208<para>Several functions of the frontend device use the fe_status data type defined
208by</para> 209by</para>
209<programlisting> 210<programlisting>
210 typedef enum fe_status { 211typedef enum fe_status {
211 FE_HAS_SIGNAL = 0x01, /&#x22C6; found something above the noise level &#x22C6;/ 212 FE_HAS_SIGNAL = 0x01,
212 FE_HAS_CARRIER = 0x02, /&#x22C6; found a DVB signal &#x22C6;/ 213 FE_HAS_CARRIER = 0x02,
213 FE_HAS_VITERBI = 0x04, /&#x22C6; FEC is stable &#x22C6;/ 214 FE_HAS_VITERBI = 0x04,
214 FE_HAS_SYNC = 0x08, /&#x22C6; found sync bytes &#x22C6;/ 215 FE_HAS_SYNC = 0x08,
215 FE_HAS_LOCK = 0x10, /&#x22C6; everything's working... &#x22C6;/ 216 FE_HAS_LOCK = 0x10,
216 FE_TIMEDOUT = 0x20, /&#x22C6; no lock within the last ~2 seconds &#x22C6;/ 217 FE_TIMEDOUT = 0x20,
217 FE_REINIT = 0x40 /&#x22C6; frontend was reinitialized, &#x22C6;/ 218 FE_REINIT = 0x40,
218 } fe_status_t; /&#x22C6; application is recommned to reset &#x22C6;/ 219} fe_status_t;
219</programlisting> 220</programlisting>
220<para>to indicate the current state and/or state changes of the frontend hardware. 221<para>to indicate the current state and/or state changes of the frontend hardware:
221</para> 222</para>
223
224<informaltable><tgroup cols="2"><tbody>
225<row>
226<entry align="char">FE_HAS_SIGNAL</entry>
227<entry align="char">The frontend has found something above the noise level</entry>
228</row><row>
229<entry align="char">FE_HAS_CARRIER</entry>
230<entry align="char">The frontend has found a DVB signal</entry>
231</row><row>
232<entry align="char">FE_HAS_VITERBI</entry>
233<entry align="char">The frontend FEC code is stable</entry>
234</row><row>
235<entry align="char">FE_HAS_SYNC</entry>
236<entry align="char">Syncronization bytes was found</entry>
237</row><row>
238<entry align="char">FE_HAS_LOCK</entry>
239<entry align="char">The DVB were locked and everything is working</entry>
240</row><row>
241<entry align="char">FE_TIMEDOUT</entry>
242<entry align="char">no lock within the last about 2 seconds</entry>
243</row><row>
244<entry align="char">FE_REINIT</entry>
245<entry align="char">The frontend was reinitialized, application is
246recommended to reset DiSEqC, tone and parameters</entry>
247</row>
248</tbody></tgroup></informaltable>
222 249
223</section> 250</section>
224 251
@@ -238,7 +265,7 @@ and to add newer delivery systems.</para>
238<constant>FE_GET_PROPERTY/FE_SET_PROPERTY</constant></link> instead, in 265<constant>FE_GET_PROPERTY/FE_SET_PROPERTY</constant></link> instead, in
239order to be able to support the newer System Delivery like DVB-S2, DVB-T2, 266order to be able to support the newer System Delivery like DVB-S2, DVB-T2,
240DVB-C2, ISDB, etc.</para> 267DVB-C2, ISDB, etc.</para>
241<para>All kinds of parameters are combined as an union in the FrontendParameters structure:</para> 268<para>All kinds of parameters are combined as an union in the FrontendParameters structure:
242<programlisting> 269<programlisting>
243struct dvb_frontend_parameters { 270struct dvb_frontend_parameters {
244 uint32_t frequency; /&#x22C6; (absolute) frequency in Hz for QAM/OFDM &#x22C6;/ 271 uint32_t frequency; /&#x22C6; (absolute) frequency in Hz for QAM/OFDM &#x22C6;/
@@ -251,12 +278,13 @@ struct dvb_frontend_parameters {
251 struct dvb_vsb_parameters vsb; 278 struct dvb_vsb_parameters vsb;
252 } u; 279 } u;
253}; 280};
254</programlisting> 281</programlisting></para>
255<para>In the case of QPSK frontends the <constant>frequency</constant> field specifies the intermediate 282<para>In the case of QPSK frontends the <constant>frequency</constant> field specifies the intermediate
256frequency, i.e. the offset which is effectively added to the local oscillator frequency (LOF) of 283frequency, i.e. the offset which is effectively added to the local oscillator frequency (LOF) of
257the LNB. The intermediate frequency has to be specified in units of kHz. For QAM and 284the LNB. The intermediate frequency has to be specified in units of kHz. For QAM and
258OFDM frontends the <constant>frequency</constant> specifies the absolute frequency and is given in Hz. 285OFDM frontends the <constant>frequency</constant> specifies the absolute frequency and is given in Hz.
259</para> 286</para>
287
260<section id="dvb-qpsk-parameters"> 288<section id="dvb-qpsk-parameters">
261<title>QPSK parameters</title> 289<title>QPSK parameters</title>
262<para>For satellite QPSK frontends you have to use the <constant>dvb_qpsk_parameters</constant> structure:</para> 290<para>For satellite QPSK frontends you have to use the <constant>dvb_qpsk_parameters</constant> structure:</para>
@@ -321,8 +349,8 @@ itself.
321<section id="fe-code-rate-t"> 349<section id="fe-code-rate-t">
322<title>frontend code rate</title> 350<title>frontend code rate</title>
323<para>The possible values for the <constant>fec_inner</constant> field used on 351<para>The possible values for the <constant>fec_inner</constant> field used on
324<link refend="dvb-qpsk-parameters"><constant>struct dvb_qpsk_parameters</constant></link> and 352<link linkend="dvb-qpsk-parameters"><constant>struct dvb_qpsk_parameters</constant></link> and
325<link refend="dvb-qam-parameters"><constant>struct dvb_qam_parameters</constant></link> are: 353<link linkend="dvb-qam-parameters"><constant>struct dvb_qam_parameters</constant></link> are:
326</para> 354</para>
327<programlisting> 355<programlisting>
328typedef enum fe_code_rate { 356typedef enum fe_code_rate {
@@ -347,9 +375,9 @@ detection.
347<section id="fe-modulation-t"> 375<section id="fe-modulation-t">
348<title>frontend modulation type for QAM, OFDM and VSB</title> 376<title>frontend modulation type for QAM, OFDM and VSB</title>
349<para>For cable and terrestrial frontends, e. g. for 377<para>For cable and terrestrial frontends, e. g. for
350<link refend="dvb-qam-parameters"><constant>struct dvb_qpsk_parameters</constant></link>, 378<link linkend="dvb-qam-parameters"><constant>struct dvb_qpsk_parameters</constant></link>,
351<link refend="dvb-ofdm-parameters"><constant>struct dvb_qam_parameters</constant></link> and 379<link linkend="dvb-ofdm-parameters"><constant>struct dvb_qam_parameters</constant></link> and
352<link refend="dvb-vsb-parameters"><constant>struct dvb_qam_parameters</constant></link>, 380<link linkend="dvb-vsb-parameters"><constant>struct dvb_qam_parameters</constant></link>,
353it needs to specify the quadrature modulation mode which can be one of the following: 381it needs to specify the quadrature modulation mode which can be one of the following:
354</para> 382</para>
355<programlisting> 383<programlisting>
@@ -370,8 +398,8 @@ it needs to specify the quadrature modulation mode which can be one of the follo
370 } fe_modulation_t; 398 } fe_modulation_t;
371</programlisting> 399</programlisting>
372</section> 400</section>
373<para>Finally, there are several more parameters for OFDM: 401<section>
374</para> 402<title>More OFDM parameters</title>
375<section id="fe-transmit-mode-t"> 403<section id="fe-transmit-mode-t">
376<title>Number of carriers per channel</title> 404<title>Number of carriers per channel</title>
377<programlisting> 405<programlisting>
@@ -427,6 +455,7 @@ typedef enum fe_hierarchy {
427 } fe_hierarchy_t; 455 } fe_hierarchy_t;
428</programlisting> 456</programlisting>
429</section> 457</section>
458</section>
430 459
431</section> 460</section>
432 461
diff --git a/Documentation/DocBook/media/dvb/intro.xml b/Documentation/DocBook/media/dvb/intro.xml
index 170064a3dc8f..2048b53d19b9 100644
--- a/Documentation/DocBook/media/dvb/intro.xml
+++ b/Documentation/DocBook/media/dvb/intro.xml
@@ -205,7 +205,7 @@ a partial path like:</para>
205additional include file <emphasis 205additional include file <emphasis
206role="tt">linux/dvb/version.h</emphasis> exists, which defines the 206role="tt">linux/dvb/version.h</emphasis> exists, which defines the
207constant <emphasis role="tt">DVB_API_VERSION</emphasis>. This document 207constant <emphasis role="tt">DVB_API_VERSION</emphasis>. This document
208describes <emphasis role="tt">DVB_API_VERSION 5.4</emphasis>. 208describes <emphasis role="tt">DVB_API_VERSION 5.8</emphasis>.
209</para> 209</para>
210 210
211</section> 211</section>
diff --git a/Documentation/DocBook/media/dvb/kdapi.xml b/Documentation/DocBook/media/dvb/kdapi.xml
index 6c67481eaa4b..6c11ec52cbee 100644
--- a/Documentation/DocBook/media/dvb/kdapi.xml
+++ b/Documentation/DocBook/media/dvb/kdapi.xml
@@ -2,7 +2,7 @@
2<para>The kernel demux API defines a driver-internal interface for registering low-level, 2<para>The kernel demux API defines a driver-internal interface for registering low-level,
3hardware specific driver to a hardware independent demux layer. It is only of interest for 3hardware specific driver to a hardware independent demux layer. It is only of interest for
4DVB device driver writers. The header file for this API is named <emphasis role="tt">demux.h</emphasis> and located in 4DVB device driver writers. The header file for this API is named <emphasis role="tt">demux.h</emphasis> and located in
5<emphasis role="tt">drivers/media/dvb/dvb-core</emphasis>. 5<emphasis role="tt">drivers/media/dvb-core</emphasis>.
6</para> 6</para>
7<para>Maintainer note: This section must be reviewed. It is probably out of date. 7<para>Maintainer note: This section must be reviewed. It is probably out of date.
8</para> 8</para>
diff --git a/Documentation/DocBook/media/dvb/net.xml b/Documentation/DocBook/media/dvb/net.xml
index 67d37e5ce597..a193e86941b5 100644
--- a/Documentation/DocBook/media/dvb/net.xml
+++ b/Documentation/DocBook/media/dvb/net.xml
@@ -26,4 +26,131 @@ struct dvb_net_if {
26<title>DVB net Function Calls</title> 26<title>DVB net Function Calls</title>
27<para>To be written&#x2026; 27<para>To be written&#x2026;
28</para> 28</para>
29
30<section id="NET_ADD_IF"
31role="subsection"><title>NET_ADD_IF</title>
32<para>DESCRIPTION
33</para>
34<informaltable><tgroup cols="1"><tbody><row><entry
35 align="char">
36<para>This ioctl is undocumented. Documentation is welcome.</para>
37</entry>
38 </row></tbody></tgroup></informaltable>
39<para>SYNOPSIS
40</para>
41<informaltable><tgroup cols="1"><tbody><row><entry
42 align="char">
43<para>int ioctl(fd, int request = NET_ADD_IF,
44 struct dvb_net_if *if);</para>
45</entry>
46 </row></tbody></tgroup></informaltable>
47<para>PARAMETERS
48</para>
49<informaltable><tgroup cols="2"><tbody><row><entry
50 align="char">
51<para>int fd</para>
52</entry><entry
53 align="char">
54<para>File descriptor returned by a previous call to open().</para>
55</entry>
56 </row><row><entry
57 align="char">
58<para>int request</para>
59</entry><entry
60 align="char">
61<para>Equals NET_ADD_IF for this command.</para>
62</entry>
63 </row><row><entry
64 align="char">
65<para>struct dvb_net_if *if
66</para>
67</entry><entry
68 align="char">
69<para>Undocumented.</para>
70</entry>
71 </row></tbody></tgroup></informaltable>
72&return-value-dvb;
73</section>
74
75<section id="NET_REMOVE_IF"
76role="subsection"><title>NET_REMOVE_IF</title>
77<para>DESCRIPTION
78</para>
79<informaltable><tgroup cols="1"><tbody><row><entry
80 align="char">
81<para>This ioctl is undocumented. Documentation is welcome.</para>
82</entry>
83 </row></tbody></tgroup></informaltable>
84<para>SYNOPSIS
85</para>
86<informaltable><tgroup cols="1"><tbody><row><entry
87 align="char">
88<para>int ioctl(fd, int request = NET_REMOVE_IF);
89</para>
90</entry>
91 </row></tbody></tgroup></informaltable>
92<para>PARAMETERS
93</para>
94<informaltable><tgroup cols="2"><tbody><row><entry
95 align="char">
96<para>int fd</para>
97</entry><entry
98 align="char">
99<para>File descriptor returned by a previous call to open().</para>
100</entry>
101 </row><row><entry
102 align="char">
103<para>int request</para>
104</entry><entry
105 align="char">
106<para>Equals NET_REMOVE_IF for this command.</para>
107</entry>
108 </row></tbody></tgroup></informaltable>
109&return-value-dvb;
110</section>
111
112<section id="NET_GET_IF"
113role="subsection"><title>NET_GET_IF</title>
114<para>DESCRIPTION
115</para>
116<informaltable><tgroup cols="1"><tbody><row><entry
117 align="char">
118<para>This ioctl is undocumented. Documentation is welcome.</para>
119</entry>
120 </row></tbody></tgroup></informaltable>
121<para>SYNOPSIS
122</para>
123<informaltable><tgroup cols="1"><tbody><row><entry
124 align="char">
125<para>int ioctl(fd, int request = NET_GET_IF,
126 struct dvb_net_if *if);</para>
127</entry>
128 </row></tbody></tgroup></informaltable>
129<para>PARAMETERS
130</para>
131<informaltable><tgroup cols="2"><tbody><row><entry
132 align="char">
133<para>int fd</para>
134</entry><entry
135 align="char">
136<para>File descriptor returned by a previous call to open().</para>
137</entry>
138 </row><row><entry
139 align="char">
140<para>int request</para>
141</entry><entry
142 align="char">
143<para>Equals NET_GET_IF for this command.</para>
144</entry>
145 </row><row><entry
146 align="char">
147<para>struct dvb_net_if *if
148</para>
149</entry><entry
150 align="char">
151<para>Undocumented.</para>
152</entry>
153 </row></tbody></tgroup></informaltable>
154&return-value-dvb;
155</section>
29</section> 156</section>
diff --git a/Documentation/DocBook/media/dvb/video.xml b/Documentation/DocBook/media/dvb/video.xml
index 25fb823226b4..3ea1ca7e785e 100644
--- a/Documentation/DocBook/media/dvb/video.xml
+++ b/Documentation/DocBook/media/dvb/video.xml
@@ -15,6 +15,10 @@ the audio and video device as well as the video4linux device.
15<para>The ioctls that deal with SPUs (sub picture units) and navigation packets are only 15<para>The ioctls that deal with SPUs (sub picture units) and navigation packets are only
16supported on some MPEG decoders made for DVD playback. 16supported on some MPEG decoders made for DVD playback.
17</para> 17</para>
18<para>
19These ioctls were also used by V4L2 to control MPEG decoders implemented in V4L2. The use
20of these ioctls for that purpose has been made obsolete and proper V4L2 ioctls or controls
21have been created to replace that functionality.</para>
18<section id="video_types"> 22<section id="video_types">
19<title>Video Data Types</title> 23<title>Video Data Types</title>
20 24
@@ -55,7 +59,7 @@ typedef enum {
55</section> 59</section>
56 60
57<section id="video-stream-source-t"> 61<section id="video-stream-source-t">
58<title>video stream source</title> 62<title>video_stream_source_t</title>
59<para>The video stream source is set through the VIDEO_SELECT_SOURCE call and can take 63<para>The video stream source is set through the VIDEO_SELECT_SOURCE call and can take
60the following values, depending on whether we are replaying from an internal (demuxer) or 64the following values, depending on whether we are replaying from an internal (demuxer) or
61external (user write) source. 65external (user write) source.
@@ -76,7 +80,7 @@ call.
76</section> 80</section>
77 81
78<section id="video-play-state-t"> 82<section id="video-play-state-t">
79<title>video play state</title> 83<title>video_play_state_t</title>
80<para>The following values can be returned by the VIDEO_GET_STATUS call representing the 84<para>The following values can be returned by the VIDEO_GET_STATUS call representing the
81state of video playback. 85state of video playback.
82</para> 86</para>
@@ -90,9 +94,9 @@ typedef enum {
90</section> 94</section>
91 95
92<section id="video-command"> 96<section id="video-command">
97<title>struct video_command</title>
93<para>The structure must be zeroed before use by the application 98<para>The structure must be zeroed before use by the application
94This ensures it can be extended safely in the future.</para> 99This ensures it can be extended safely in the future.</para>
95<title>struct video-command</title>
96<programlisting> 100<programlisting>
97struct video_command { 101struct video_command {
98 __u32 cmd; 102 __u32 cmd;
@@ -121,7 +125,7 @@ struct video_command {
121</section> 125</section>
122 126
123<section id="video-size-t"> 127<section id="video-size-t">
124<title>struct video_size-t</title> 128<title>video_size_t</title>
125<programlisting> 129<programlisting>
126typedef struct { 130typedef struct {
127 int w; 131 int w;
@@ -217,7 +221,7 @@ bits set according to the hardwares capabilities.
217</section> 221</section>
218 222
219<section id="video-system"> 223<section id="video-system">
220<title>video system</title> 224<title>video_system_t</title>
221<para>A call to VIDEO_SET_SYSTEM sets the desired video system for TV output. The 225<para>A call to VIDEO_SET_SYSTEM sets the desired video system for TV output. The
222following system types can be set: 226following system types can be set:
223</para> 227</para>
@@ -263,7 +267,7 @@ call expects the following format for that information:
263 267
264</section> 268</section>
265<section id="video-spu"> 269<section id="video-spu">
266<title>video SPU</title> 270<title>struct video_spu</title>
267<para>Calling VIDEO_SET_SPU deactivates or activates SPU decoding, according to the 271<para>Calling VIDEO_SET_SPU deactivates or activates SPU decoding, according to the
268following format: 272following format:
269</para> 273</para>
@@ -277,12 +281,12 @@ following format:
277 281
278</section> 282</section>
279<section id="video-spu-palette"> 283<section id="video-spu-palette">
280<title>video SPU palette</title> 284<title>struct video_spu_palette</title>
281<para>The following structure is used to set the SPU palette by calling VIDEO_SPU_PALETTE: 285<para>The following structure is used to set the SPU palette by calling VIDEO_SPU_PALETTE:
282</para> 286</para>
283<programlisting> 287<programlisting>
284 typedef 288 typedef
285 struct video_spu_palette{ 289 struct video_spu_palette {
286 int length; 290 int length;
287 uint8_t &#x22C6;palette; 291 uint8_t &#x22C6;palette;
288 } video_spu_palette_t; 292 } video_spu_palette_t;
@@ -290,13 +294,13 @@ following format:
290 294
291</section> 295</section>
292<section id="video-navi-pack"> 296<section id="video-navi-pack">
293<title>video NAVI pack</title> 297<title>struct video_navi_pack</title>
294<para>In order to get the navigational data the following structure has to be passed to the ioctl 298<para>In order to get the navigational data the following structure has to be passed to the ioctl
295VIDEO_GET_NAVI: 299VIDEO_GET_NAVI:
296</para> 300</para>
297<programlisting> 301<programlisting>
298 typedef 302 typedef
299 struct video_navi_pack{ 303 struct video_navi_pack {
300 int length; /&#x22C6; 0 ... 1024 &#x22C6;/ 304 int length; /&#x22C6; 0 ... 1024 &#x22C6;/
301 uint8_t data[1024]; 305 uint8_t data[1024];
302 } video_navi_pack_t; 306 } video_navi_pack_t;
@@ -305,7 +309,7 @@ VIDEO_GET_NAVI:
305 309
306 310
307<section id="video-attributes-t"> 311<section id="video-attributes-t">
308<title>video attributes</title> 312<title>video_attributes_t</title>
309<para>The following attributes can be set by a call to VIDEO_SET_ATTRIBUTES: 313<para>The following attributes can be set by a call to VIDEO_SET_ATTRIBUTES:
310</para> 314</para>
311<programlisting> 315<programlisting>
@@ -541,6 +545,8 @@ VIDEO_GET_NAVI:
541role="subsection"><title>VIDEO_STOP</title> 545role="subsection"><title>VIDEO_STOP</title>
542<para>DESCRIPTION 546<para>DESCRIPTION
543</para> 547</para>
548<para>This ioctl is for DVB devices only. To control a V4L2 decoder use the V4L2
549&VIDIOC-DECODER-CMD; instead.</para>
544<informaltable><tgroup cols="1"><tbody><row><entry 550<informaltable><tgroup cols="1"><tbody><row><entry
545 align="char"> 551 align="char">
546<para>This ioctl call asks the Video Device to stop playing the current stream. 552<para>This ioctl call asks the Video Device to stop playing the current stream.
@@ -598,6 +604,8 @@ role="subsection"><title>VIDEO_STOP</title>
598role="subsection"><title>VIDEO_PLAY</title> 604role="subsection"><title>VIDEO_PLAY</title>
599<para>DESCRIPTION 605<para>DESCRIPTION
600</para> 606</para>
607<para>This ioctl is for DVB devices only. To control a V4L2 decoder use the V4L2
608&VIDIOC-DECODER-CMD; instead.</para>
601<informaltable><tgroup cols="1"><tbody><row><entry 609<informaltable><tgroup cols="1"><tbody><row><entry
602 align="char"> 610 align="char">
603<para>This ioctl call asks the Video Device to start playing a video stream from the 611<para>This ioctl call asks the Video Device to start playing a video stream from the
@@ -634,6 +642,8 @@ role="subsection"><title>VIDEO_PLAY</title>
634role="subsection"><title>VIDEO_FREEZE</title> 642role="subsection"><title>VIDEO_FREEZE</title>
635<para>DESCRIPTION 643<para>DESCRIPTION
636</para> 644</para>
645<para>This ioctl is for DVB devices only. To control a V4L2 decoder use the V4L2
646&VIDIOC-DECODER-CMD; instead.</para>
637<informaltable><tgroup cols="1"><tbody><row><entry 647<informaltable><tgroup cols="1"><tbody><row><entry
638 align="char"> 648 align="char">
639<para>This ioctl call suspends the live video stream being played. Decoding 649<para>This ioctl call suspends the live video stream being played. Decoding
@@ -674,6 +684,8 @@ role="subsection"><title>VIDEO_FREEZE</title>
674role="subsection"><title>VIDEO_CONTINUE</title> 684role="subsection"><title>VIDEO_CONTINUE</title>
675<para>DESCRIPTION 685<para>DESCRIPTION
676</para> 686</para>
687<para>This ioctl is for DVB devices only. To control a V4L2 decoder use the V4L2
688&VIDIOC-DECODER-CMD; instead.</para>
677<informaltable><tgroup cols="1"><tbody><row><entry 689<informaltable><tgroup cols="1"><tbody><row><entry
678 align="char"> 690 align="char">
679<para>This ioctl call restarts decoding and playing processes of the video stream 691<para>This ioctl call restarts decoding and playing processes of the video stream
@@ -710,6 +722,9 @@ role="subsection"><title>VIDEO_CONTINUE</title>
710role="subsection"><title>VIDEO_SELECT_SOURCE</title> 722role="subsection"><title>VIDEO_SELECT_SOURCE</title>
711<para>DESCRIPTION 723<para>DESCRIPTION
712</para> 724</para>
725<para>This ioctl is for DVB devices only. This ioctl was also supported by the
726V4L2 ivtv driver, but that has been replaced by the ivtv-specific
727<constant>IVTV_IOC_PASSTHROUGH_MODE</constant> ioctl.</para>
713<informaltable><tgroup cols="1"><tbody><row><entry 728<informaltable><tgroup cols="1"><tbody><row><entry
714 align="char"> 729 align="char">
715<para>This ioctl call informs the video device which source shall be used for the input 730<para>This ioctl call informs the video device which source shall be used for the input
@@ -845,10 +860,160 @@ role="subsection"><title>VIDEO_GET_STATUS</title>
845 </row></tbody></tgroup></informaltable> 860 </row></tbody></tgroup></informaltable>
846&return-value-dvb; 861&return-value-dvb;
847 862
863</section><section id="VIDEO_GET_FRAME_COUNT"
864role="subsection"><title>VIDEO_GET_FRAME_COUNT</title>
865<para>DESCRIPTION
866</para>
867<para>This ioctl is obsolete. Do not use in new drivers. For V4L2 decoders this
868ioctl has been replaced by the <constant>V4L2_CID_MPEG_VIDEO_DEC_FRAME</constant> control.</para>
869<informaltable><tgroup cols="1"><tbody><row><entry
870 align="char">
871<para>This ioctl call asks the Video Device to return the number of displayed frames
872since the decoder was started.</para>
873</entry>
874 </row></tbody></tgroup></informaltable>
875<para>SYNOPSIS
876</para>
877<informaltable><tgroup cols="1"><tbody><row><entry
878 align="char">
879<para>int ioctl(int fd, int request =
880 VIDEO_GET_FRAME_COUNT, __u64 *pts);</para>
881</entry>
882 </row></tbody></tgroup></informaltable>
883<para>PARAMETERS
884</para>
885<informaltable><tgroup cols="2"><tbody><row><entry
886 align="char">
887<para>int fd</para>
888</entry><entry
889 align="char">
890<para>File descriptor returned by a previous call to open().</para>
891</entry>
892 </row><row><entry
893 align="char">
894<para>int request</para>
895</entry><entry
896 align="char">
897<para>Equals VIDEO_GET_FRAME_COUNT for this
898 command.</para>
899</entry>
900 </row><row><entry
901 align="char">
902<para>__u64 *pts
903</para>
904</entry><entry
905 align="char">
906<para>Returns the number of frames displayed since the decoder was started.
907</para>
908</entry>
909 </row></tbody></tgroup></informaltable>
910&return-value-dvb;
911
912</section><section id="VIDEO_GET_PTS"
913role="subsection"><title>VIDEO_GET_PTS</title>
914<para>DESCRIPTION
915</para>
916<para>This ioctl is obsolete. Do not use in new drivers. For V4L2 decoders this
917ioctl has been replaced by the <constant>V4L2_CID_MPEG_VIDEO_DEC_PTS</constant> control.</para>
918<informaltable><tgroup cols="1"><tbody><row><entry
919 align="char">
920<para>This ioctl call asks the Video Device to return the current PTS timestamp.</para>
921</entry>
922 </row></tbody></tgroup></informaltable>
923<para>SYNOPSIS
924</para>
925<informaltable><tgroup cols="1"><tbody><row><entry
926 align="char">
927<para>int ioctl(int fd, int request =
928 VIDEO_GET_PTS, __u64 *pts);</para>
929</entry>
930 </row></tbody></tgroup></informaltable>
931<para>PARAMETERS
932</para>
933<informaltable><tgroup cols="2"><tbody><row><entry
934 align="char">
935<para>int fd</para>
936</entry><entry
937 align="char">
938<para>File descriptor returned by a previous call to open().</para>
939</entry>
940 </row><row><entry
941 align="char">
942<para>int request</para>
943</entry><entry
944 align="char">
945<para>Equals VIDEO_GET_PTS for this
946 command.</para>
947</entry>
948 </row><row><entry
949 align="char">
950<para>__u64 *pts
951</para>
952</entry><entry
953 align="char">
954<para>Returns the 33-bit timestamp as defined in ITU T-REC-H.222.0 / ISO/IEC 13818-1.
955</para>
956<para>
957The PTS should belong to the currently played
958frame if possible, but may also be a value close to it
959like the PTS of the last decoded frame or the last PTS
960extracted by the PES parser.</para>
961</entry>
962 </row></tbody></tgroup></informaltable>
963&return-value-dvb;
964
965</section><section id="VIDEO_GET_FRAME_RATE"
966role="subsection"><title>VIDEO_GET_FRAME_RATE</title>
967<para>DESCRIPTION
968</para>
969<informaltable><tgroup cols="1"><tbody><row><entry
970 align="char">
971<para>This ioctl call asks the Video Device to return the current framerate.</para>
972</entry>
973 </row></tbody></tgroup></informaltable>
974<para>SYNOPSIS
975</para>
976<informaltable><tgroup cols="1"><tbody><row><entry
977 align="char">
978<para>int ioctl(int fd, int request =
979 VIDEO_GET_FRAME_RATE, unsigned int *rate);</para>
980</entry>
981 </row></tbody></tgroup></informaltable>
982<para>PARAMETERS
983</para>
984<informaltable><tgroup cols="2"><tbody><row><entry
985 align="char">
986<para>int fd</para>
987</entry><entry
988 align="char">
989<para>File descriptor returned by a previous call to open().</para>
990</entry>
991 </row><row><entry
992 align="char">
993<para>int request</para>
994</entry><entry
995 align="char">
996<para>Equals VIDEO_GET_FRAME_RATE for this
997 command.</para>
998</entry>
999 </row><row><entry
1000 align="char">
1001<para>unsigned int *rate
1002</para>
1003</entry><entry
1004 align="char">
1005<para>Returns the framerate in number of frames per 1000 seconds.
1006</para>
1007</entry>
1008 </row></tbody></tgroup></informaltable>
1009&return-value-dvb;
1010
848</section><section id="VIDEO_GET_EVENT" 1011</section><section id="VIDEO_GET_EVENT"
849role="subsection"><title>VIDEO_GET_EVENT</title> 1012role="subsection"><title>VIDEO_GET_EVENT</title>
850<para>DESCRIPTION 1013<para>DESCRIPTION
851</para> 1014</para>
1015<para>This ioctl is for DVB devices only. To get events from a V4L2 decoder use the V4L2
1016&VIDIOC-DQEVENT; ioctl instead.</para>
852<informaltable><tgroup cols="1"><tbody><row><entry 1017<informaltable><tgroup cols="1"><tbody><row><entry
853 align="char"> 1018 align="char">
854<para>This ioctl call returns an event of type video_event if available. If an event is 1019<para>This ioctl call returns an event of type video_event if available. If an event is
@@ -914,6 +1079,152 @@ role="subsection"><title>VIDEO_GET_EVENT</title>
914</entry> 1079</entry>
915 </row></tbody></tgroup></informaltable> 1080 </row></tbody></tgroup></informaltable>
916 1081
1082</section><section id="VIDEO_COMMAND"
1083role="subsection"><title>VIDEO_COMMAND</title>
1084<para>DESCRIPTION
1085</para>
1086<para>This ioctl is obsolete. Do not use in new drivers. For V4L2 decoders this
1087ioctl has been replaced by the &VIDIOC-DECODER-CMD; ioctl.</para>
1088<informaltable><tgroup cols="1"><tbody><row><entry
1089 align="char">
1090<para>This ioctl commands the decoder. The <constant>video_command</constant> struct
1091is a subset of the <constant>v4l2_decoder_cmd</constant> struct, so refer to the
1092&VIDIOC-DECODER-CMD; documentation for more information.</para>
1093</entry>
1094 </row></tbody></tgroup></informaltable>
1095<para>SYNOPSIS
1096</para>
1097<informaltable><tgroup cols="1"><tbody><row><entry
1098 align="char">
1099<para>int ioctl(int fd, int request =
1100 VIDEO_COMMAND, struct video_command *cmd);</para>
1101</entry>
1102 </row></tbody></tgroup></informaltable>
1103<para>PARAMETERS
1104</para>
1105<informaltable><tgroup cols="2"><tbody><row><entry
1106 align="char">
1107<para>int fd</para>
1108</entry><entry
1109 align="char">
1110<para>File descriptor returned by a previous call to open().</para>
1111</entry>
1112 </row><row><entry
1113 align="char">
1114<para>int request</para>
1115</entry><entry
1116 align="char">
1117<para>Equals VIDEO_COMMAND for this
1118 command.</para>
1119</entry>
1120 </row><row><entry
1121 align="char">
1122<para>struct video_command *cmd
1123</para>
1124</entry><entry
1125 align="char">
1126<para>Commands the decoder.
1127</para>
1128</entry>
1129 </row></tbody></tgroup></informaltable>
1130&return-value-dvb;
1131
1132</section><section id="VIDEO_TRY_COMMAND"
1133role="subsection"><title>VIDEO_TRY_COMMAND</title>
1134<para>DESCRIPTION
1135</para>
1136<para>This ioctl is obsolete. Do not use in new drivers. For V4L2 decoders this
1137ioctl has been replaced by the &VIDIOC-TRY-DECODER-CMD; ioctl.</para>
1138<informaltable><tgroup cols="1"><tbody><row><entry
1139 align="char">
1140<para>This ioctl tries a decoder command. The <constant>video_command</constant> struct
1141is a subset of the <constant>v4l2_decoder_cmd</constant> struct, so refer to the
1142&VIDIOC-TRY-DECODER-CMD; documentation for more information.</para>
1143</entry>
1144 </row></tbody></tgroup></informaltable>
1145<para>SYNOPSIS
1146</para>
1147<informaltable><tgroup cols="1"><tbody><row><entry
1148 align="char">
1149<para>int ioctl(int fd, int request =
1150 VIDEO_TRY_COMMAND, struct video_command *cmd);</para>
1151</entry>
1152 </row></tbody></tgroup></informaltable>
1153<para>PARAMETERS
1154</para>
1155<informaltable><tgroup cols="2"><tbody><row><entry
1156 align="char">
1157<para>int fd</para>
1158</entry><entry
1159 align="char">
1160<para>File descriptor returned by a previous call to open().</para>
1161</entry>
1162 </row><row><entry
1163 align="char">
1164<para>int request</para>
1165</entry><entry
1166 align="char">
1167<para>Equals VIDEO_TRY_COMMAND for this
1168 command.</para>
1169</entry>
1170 </row><row><entry
1171 align="char">
1172<para>struct video_command *cmd
1173</para>
1174</entry><entry
1175 align="char">
1176<para>Try a decoder command.
1177</para>
1178</entry>
1179 </row></tbody></tgroup></informaltable>
1180&return-value-dvb;
1181
1182</section><section id="VIDEO_GET_SIZE"
1183role="subsection"><title>VIDEO_GET_SIZE</title>
1184<para>DESCRIPTION
1185</para>
1186<informaltable><tgroup cols="1"><tbody><row><entry
1187 align="char">
1188<para>This ioctl returns the size and aspect ratio.</para>
1189</entry>
1190 </row></tbody></tgroup></informaltable>
1191<para>SYNOPSIS
1192</para>
1193<informaltable><tgroup cols="1"><tbody><row><entry
1194 align="char">
1195<para>int ioctl(int fd, int request =
1196 VIDEO_GET_SIZE, video_size_t *size);</para>
1197</entry>
1198 </row></tbody></tgroup></informaltable>
1199<para>PARAMETERS
1200</para>
1201<informaltable><tgroup cols="2"><tbody><row><entry
1202 align="char">
1203<para>int fd</para>
1204</entry><entry
1205 align="char">
1206<para>File descriptor returned by a previous call to open().</para>
1207</entry>
1208 </row><row><entry
1209 align="char">
1210<para>int request</para>
1211</entry><entry
1212 align="char">
1213<para>Equals VIDEO_GET_SIZE for this
1214 command.</para>
1215</entry>
1216 </row><row><entry
1217 align="char">
1218<para>video_size_t *size
1219</para>
1220</entry><entry
1221 align="char">
1222<para>Returns the size and aspect ratio.
1223</para>
1224</entry>
1225 </row></tbody></tgroup></informaltable>
1226&return-value-dvb;
1227
917</section><section id="VIDEO_SET_DISPLAY_FORMAT" 1228</section><section id="VIDEO_SET_DISPLAY_FORMAT"
918role="subsection"><title>VIDEO_SET_DISPLAY_FORMAT</title> 1229role="subsection"><title>VIDEO_SET_DISPLAY_FORMAT</title>
919<para>DESCRIPTION 1230<para>DESCRIPTION
diff --git a/Documentation/DocBook/media/v4l/biblio.xml b/Documentation/DocBook/media/v4l/biblio.xml
index 1078e45f189f..d2eb79e41a01 100644
--- a/Documentation/DocBook/media/v4l/biblio.xml
+++ b/Documentation/DocBook/media/v4l/biblio.xml
@@ -178,23 +178,23 @@ Signal - NTSC for Studio Applications"</title>
1781125-Line High-Definition Production"</title> 1781125-Line High-Definition Production"</title>
179 </biblioentry> 179 </biblioentry>
180 180
181 <biblioentry id="en50067"> 181 <biblioentry id="iec62106">
182 <abbrev>EN&nbsp;50067</abbrev> 182 <abbrev>IEC&nbsp;62106</abbrev>
183 <authorgroup> 183 <authorgroup>
184 <corpauthor>European Committee for Electrotechnical Standardization 184 <corpauthor>International Electrotechnical Commission
185(<ulink url="http://www.cenelec.eu">http://www.cenelec.eu</ulink>)</corpauthor> 185(<ulink url="http://www.iec.ch">http://www.iec.ch</ulink>)</corpauthor>
186 </authorgroup> 186 </authorgroup>
187 <title>Specification of the radio data system (RDS) for VHF/FM sound broadcasting 187 <title>Specification of the radio data system (RDS) for VHF/FM sound broadcasting
188in the frequency range from 87,5 to 108,0 MHz</title> 188in the frequency range from 87,5 to 108,0 MHz</title>
189 </biblioentry> 189 </biblioentry>
190 190
191 <biblioentry id="nrsc4"> 191 <biblioentry id="nrsc4">
192 <abbrev>NRSC-4</abbrev> 192 <abbrev>NRSC-4-B</abbrev>
193 <authorgroup> 193 <authorgroup>
194 <corpauthor>National Radio Systems Committee 194 <corpauthor>National Radio Systems Committee
195(<ulink url="http://www.nrscstandards.org">http://www.nrscstandards.org</ulink>)</corpauthor> 195(<ulink url="http://www.nrscstandards.org">http://www.nrscstandards.org</ulink>)</corpauthor>
196 </authorgroup> 196 </authorgroup>
197 <title>NRSC-4: United States RBDS Standard</title> 197 <title>NRSC-4-B: United States RBDS Standard</title>
198 </biblioentry> 198 </biblioentry>
199 199
200 <biblioentry id="iso12232"> 200 <biblioentry id="iso12232">
@@ -226,4 +226,44 @@ in the frequency range from 87,5 to 108,0 MHz</title>
226 <title>VESA and Industry Standards and Guidelines for Computer Display Monitor Timing (DMT)</title> 226 <title>VESA and Industry Standards and Guidelines for Computer Display Monitor Timing (DMT)</title>
227 </biblioentry> 227 </biblioentry>
228 228
229 <biblioentry id="vesaedid">
230 <abbrev>EDID</abbrev>
231 <authorgroup>
232 <corpauthor>Video Electronics Standards Association
233(<ulink url="http://www.vesa.org">http://www.vesa.org</ulink>)</corpauthor>
234 </authorgroup>
235 <title>VESA Enhanced Extended Display Identification Data Standard</title>
236 <subtitle>Release A, Revision 2</subtitle>
237 </biblioentry>
238
239 <biblioentry id="hdcp">
240 <abbrev>HDCP</abbrev>
241 <authorgroup>
242 <corpauthor>Digital Content Protection LLC
243(<ulink url="http://www.digital-cp.com">http://www.digital-cp.com</ulink>)</corpauthor>
244 </authorgroup>
245 <title>High-bandwidth Digital Content Protection System</title>
246 <subtitle>Revision 1.3</subtitle>
247 </biblioentry>
248
249 <biblioentry id="hdmi">
250 <abbrev>HDMI</abbrev>
251 <authorgroup>
252 <corpauthor>HDMI Licensing LLC
253(<ulink url="http://www.hdmi.org">http://www.hdmi.org</ulink>)</corpauthor>
254 </authorgroup>
255 <title>High-Definition Multimedia Interface</title>
256 <subtitle>Specification Version 1.4a</subtitle>
257 </biblioentry>
258
259 <biblioentry id="dp">
260 <abbrev>DP</abbrev>
261 <authorgroup>
262 <corpauthor>Video Electronics Standards Association
263(<ulink url="http://www.vesa.org">http://www.vesa.org</ulink>)</corpauthor>
264 </authorgroup>
265 <title>VESA DisplayPort Standard</title>
266 <subtitle>Version 1, Revision 2</subtitle>
267 </biblioentry>
268
229 </bibliography> 269 </bibliography>
diff --git a/Documentation/DocBook/media/v4l/common.xml b/Documentation/DocBook/media/v4l/common.xml
index b91d25313b63..73c6847436c9 100644
--- a/Documentation/DocBook/media/v4l/common.xml
+++ b/Documentation/DocBook/media/v4l/common.xml
@@ -564,7 +564,7 @@ automatically.</para>
564 <para>To query and select the standard used by the current video 564 <para>To query and select the standard used by the current video
565input or output applications call the &VIDIOC-G-STD; and 565input or output applications call the &VIDIOC-G-STD; and
566&VIDIOC-S-STD; ioctl, respectively. The <emphasis>received</emphasis> 566&VIDIOC-S-STD; ioctl, respectively. The <emphasis>received</emphasis>
567standard can be sensed with the &VIDIOC-QUERYSTD; ioctl. Note parameter of all these ioctls is a pointer to a &v4l2-std-id; type (a standard set), <emphasis>not</emphasis> an index into the standard enumeration.<footnote> 567standard can be sensed with the &VIDIOC-QUERYSTD; ioctl. Note that the parameter of all these ioctls is a pointer to a &v4l2-std-id; type (a standard set), <emphasis>not</emphasis> an index into the standard enumeration.<footnote>
568 <para>An alternative to the current scheme is to use pointers 568 <para>An alternative to the current scheme is to use pointers
569to indices as arguments of <constant>VIDIOC_G_STD</constant> and 569to indices as arguments of <constant>VIDIOC_G_STD</constant> and
570<constant>VIDIOC_S_STD</constant>, the &v4l2-input; and 570<constant>VIDIOC_S_STD</constant>, the &v4l2-input; and
@@ -588,30 +588,28 @@ switch to a standard by &v4l2-std-id;.</para>
588 </footnote> Drivers must implement all video standard ioctls 588 </footnote> Drivers must implement all video standard ioctls
589when the device has one or more video inputs or outputs.</para> 589when the device has one or more video inputs or outputs.</para>
590 590
591 <para>Special rules apply to USB cameras where the notion of video 591 <para>Special rules apply to devices such as USB cameras where the notion of video
592standards makes little sense. More generally any capture device, 592standards makes little sense. More generally for any capture or output device
593output devices accordingly, which is <itemizedlist> 593which is: <itemizedlist>
594 <listitem> 594 <listitem>
595 <para>incapable of capturing fields or frames at the nominal 595 <para>incapable of capturing fields or frames at the nominal
596rate of the video standard, or</para> 596rate of the video standard, or</para>
597 </listitem> 597 </listitem>
598 <listitem> 598 <listitem>
599 <para>where <link linkend="buffer">timestamps</link> refer 599 <para>that does not support the video standard formats at all.</para>
600to the instant the field or frame was received by the driver, not the
601capture time, or</para>
602 </listitem>
603 <listitem>
604 <para>where <link linkend="buffer">sequence numbers</link>
605refer to the frames received by the driver, not the captured
606frames.</para>
607 </listitem> 600 </listitem>
608 </itemizedlist> Here the driver shall set the 601 </itemizedlist> Here the driver shall set the
609<structfield>std</structfield> field of &v4l2-input; and &v4l2-output; 602<structfield>std</structfield> field of &v4l2-input; and &v4l2-output;
610to zero, the <constant>VIDIOC_G_STD</constant>, 603to zero and the <constant>VIDIOC_G_STD</constant>,
611<constant>VIDIOC_S_STD</constant>, 604<constant>VIDIOC_S_STD</constant>,
612<constant>VIDIOC_QUERYSTD</constant> and 605<constant>VIDIOC_QUERYSTD</constant> and
613<constant>VIDIOC_ENUMSTD</constant> ioctls shall return the 606<constant>VIDIOC_ENUMSTD</constant> ioctls shall return the
614&EINVAL;.<footnote> 607&ENOTTY;.<footnote>
608 <para>See <xref linkend="buffer" /> for a rationale.</para>
609 <para>Applications can make use of the <xref linkend="input-capabilities" /> and
610<xref linkend="output-capabilities"/> flags to determine whether the video standard ioctls
611are available for the device.</para>
612&ENOTTY;.
615 <para>See <xref linkend="buffer" /> for a rationale. Probably 613 <para>See <xref linkend="buffer" /> for a rationale. Probably
616even USB cameras follow some well known video standard. It might have 614even USB cameras follow some well known video standard. It might have
617been better to explicitly indicate elsewhere if a device cannot live 615been better to explicitly indicate elsewhere if a device cannot live
@@ -626,9 +624,9 @@ up to normal expectations, instead of this exception.</para>
626&v4l2-standard; standard; 624&v4l2-standard; standard;
627 625
628if (-1 == ioctl (fd, &VIDIOC-G-STD;, &amp;std_id)) { 626if (-1 == ioctl (fd, &VIDIOC-G-STD;, &amp;std_id)) {
629 /* Note when VIDIOC_ENUMSTD always returns EINVAL this 627 /* Note when VIDIOC_ENUMSTD always returns ENOTTY this
630 is no video device or it falls under the USB exception, 628 is no video device or it falls under the USB exception,
631 and VIDIOC_G_STD returning EINVAL is no error. */ 629 and VIDIOC_G_STD returning ENOTTY is no error. */
632 630
633 perror ("VIDIOC_G_STD"); 631 perror ("VIDIOC_G_STD");
634 exit (EXIT_FAILURE); 632 exit (EXIT_FAILURE);
diff --git a/Documentation/DocBook/media/v4l/compat.xml b/Documentation/DocBook/media/v4l/compat.xml
index faa0fd14666a..4fdf6b562d1c 100644
--- a/Documentation/DocBook/media/v4l/compat.xml
+++ b/Documentation/DocBook/media/v4l/compat.xml
@@ -1476,7 +1476,7 @@ follows.<informaltable>
1476 </row> 1476 </row>
1477 <row> 1477 <row>
1478 <entry><constant>V4L2_BUF_TYPE_PRIVATE_BASE</constant></entry> 1478 <entry><constant>V4L2_BUF_TYPE_PRIVATE_BASE</constant></entry>
1479 <entry><constant>V4L2_BUF_TYPE_PRIVATE</constant></entry> 1479 <entry><constant>V4L2_BUF_TYPE_PRIVATE</constant> (but this is deprecated)</entry>
1480 </row> 1480 </row>
1481 </tbody> 1481 </tbody>
1482 </tgroup> 1482 </tgroup>
@@ -2468,21 +2468,9 @@ that used it. It was originally scheduled for removal in 2.6.35.
2468 <structfield>reserved2</structfield> and removed 2468 <structfield>reserved2</structfield> and removed
2469 <constant>V4L2_BUF_FLAG_INPUT</constant>.</para> 2469 <constant>V4L2_BUF_FLAG_INPUT</constant>.</para>
2470 </listitem> 2470 </listitem>
2471 </orderedlist>
2472 </section>
2473
2474 <section>
2475 <title>V4L2 in Linux 3.6</title>
2476 <orderedlist>
2477 <listitem> 2471 <listitem>
2478 <para>Added V4L2_CAP_VIDEO_M2M and V4L2_CAP_VIDEO_M2M_MPLANE capabilities.</para> 2472 <para>Added V4L2_CAP_VIDEO_M2M and V4L2_CAP_VIDEO_M2M_MPLANE capabilities.</para>
2479 </listitem> 2473 </listitem>
2480 </orderedlist>
2481 </section>
2482
2483 <section>
2484 <title>V4L2 in Linux 3.6</title>
2485 <orderedlist>
2486 <listitem> 2474 <listitem>
2487 <para>Added support for frequency band enumerations: &VIDIOC-ENUM-FREQ-BANDS;.</para> 2475 <para>Added support for frequency band enumerations: &VIDIOC-ENUM-FREQ-BANDS;.</para>
2488 </listitem> 2476 </listitem>
@@ -2567,29 +2555,6 @@ and may change in the future.</para>
2567 <para>Video Output Overlay (OSD) Interface, <xref 2555 <para>Video Output Overlay (OSD) Interface, <xref
2568 linkend="osd" />.</para> 2556 linkend="osd" />.</para>
2569 </listitem> 2557 </listitem>
2570 <listitem>
2571 <para><constant>V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY</constant>,
2572 &v4l2-buf-type;, <xref linkend="v4l2-buf-type" />.</para>
2573 </listitem>
2574 <listitem>
2575 <para><constant>V4L2_CAP_VIDEO_OUTPUT_OVERLAY</constant>,
2576&VIDIOC-QUERYCAP; ioctl, <xref linkend="device-capabilities" />.</para>
2577 </listitem>
2578 <listitem>
2579 <para>&VIDIOC-ENUM-FRAMESIZES; and
2580&VIDIOC-ENUM-FRAMEINTERVALS; ioctls.</para>
2581 </listitem>
2582 <listitem>
2583 <para>&VIDIOC-G-ENC-INDEX; ioctl.</para>
2584 </listitem>
2585 <listitem>
2586 <para>&VIDIOC-ENCODER-CMD; and &VIDIOC-TRY-ENCODER-CMD;
2587ioctls.</para>
2588 </listitem>
2589 <listitem>
2590 <para>&VIDIOC-DECODER-CMD; and &VIDIOC-TRY-DECODER-CMD;
2591ioctls.</para>
2592 </listitem>
2593 <listitem> 2558 <listitem>
2594 <para>&VIDIOC-DBG-G-REGISTER; and &VIDIOC-DBG-S-REGISTER; 2559 <para>&VIDIOC-DBG-G-REGISTER; and &VIDIOC-DBG-S-REGISTER;
2595ioctls.</para> 2560ioctls.</para>
@@ -2615,11 +2580,11 @@ ioctls.</para>
2615 and &VIDIOC-SUBDEV-S-SELECTION; ioctls.</para> 2580 and &VIDIOC-SUBDEV-S-SELECTION; ioctls.</para>
2616 </listitem> 2581 </listitem>
2617 <listitem> 2582 <listitem>
2618 <para><link linkend="v4l2-auto-focus-area"><constant> 2583 <para>Support for frequency band enumeration: &VIDIOC-ENUM-FREQ-BANDS; ioctl.</para>
2619 V4L2_CID_AUTO_FOCUS_AREA</constant></link> control.</para>
2620 </listitem> 2584 </listitem>
2621 <listitem> 2585 <listitem>
2622 <para>Support for frequency band enumeration: &VIDIOC-ENUM-FREQ-BANDS; ioctl.</para> 2586 <para>Vendor and device specific media bus pixel formats.
2587 <xref linkend="v4l2-mbus-vendor-spec-fmts" />.</para>
2623 </listitem> 2588 </listitem>
2624 </itemizedlist> 2589 </itemizedlist>
2625 </section> 2590 </section>
diff --git a/Documentation/DocBook/media/v4l/controls.xml b/Documentation/DocBook/media/v4l/controls.xml
index b0964fb4e834..7fe5be1d3bbb 100644
--- a/Documentation/DocBook/media/v4l/controls.xml
+++ b/Documentation/DocBook/media/v4l/controls.xml
@@ -1586,7 +1586,6 @@ frame counter of the frame that is currently displayed (decoded). This value is
1586the decoder is started.</entry> 1586the decoder is started.</entry>
1587 </row> 1587 </row>
1588 1588
1589
1590 <row><entry></entry></row> 1589 <row><entry></entry></row>
1591 <row> 1590 <row>
1592 <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_DECODER_SLICE_INTERFACE</constant>&nbsp;</entry> 1591 <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_DECODER_SLICE_INTERFACE</constant>&nbsp;</entry>
@@ -2270,6 +2269,14 @@ Applicable to the MPEG1, MPEG2, MPEG4 encoders.</entry>
2270 </row> 2269 </row>
2271 2270
2272 <row><entry></entry></row> 2271 <row><entry></entry></row>
2272 <row id="v4l2-mpeg-video-vbv-delay">
2273 <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_VBV_DELAY</constant>&nbsp;</entry>
2274 <entry>integer</entry>
2275 </row><row><entry spanname="descr">Sets the initial delay in milliseconds for
2276VBV buffer control.</entry>
2277 </row>
2278
2279 <row><entry></entry></row>
2273 <row> 2280 <row>
2274 <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H264_CPB_SIZE</constant>&nbsp;</entry> 2281 <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H264_CPB_SIZE</constant>&nbsp;</entry>
2275 <entry>integer</entry> 2282 <entry>integer</entry>
@@ -2334,6 +2341,265 @@ Applicable to the MPEG4 decoder.</entry>
2334 </row><row><entry spanname="descr">vop_time_increment value for MPEG4. Applicable to the MPEG4 encoder.</entry> 2341 </row><row><entry spanname="descr">vop_time_increment value for MPEG4. Applicable to the MPEG4 encoder.</entry>
2335 </row> 2342 </row>
2336 2343
2344 <row><entry></entry></row>
2345 <row>
2346 <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H264_SEI_FRAME_PACKING</constant>&nbsp;</entry>
2347 <entry>boolean</entry>
2348 </row>
2349 <row><entry spanname="descr">Enable generation of frame packing supplemental enhancement information in the encoded bitstream.
2350The frame packing SEI message contains the arrangement of L and R planes for 3D viewing. Applicable to the H264 encoder.</entry>
2351 </row>
2352
2353 <row><entry></entry></row>
2354 <row>
2355 <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H264_SEI_FP_CURRENT_FRAME_0</constant>&nbsp;</entry>
2356 <entry>boolean</entry>
2357 </row>
2358 <row><entry spanname="descr">Sets current frame as frame0 in frame packing SEI.
2359Applicable to the H264 encoder.</entry>
2360 </row>
2361
2362 <row><entry></entry></row>
2363 <row id="v4l2-mpeg-video-h264-sei-fp-arrangement-type">
2364 <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H264_SEI_FP_ARRANGEMENT_TYPE</constant>&nbsp;</entry>
2365 <entry>enum&nbsp;v4l2_mpeg_video_h264_sei_fp_arrangement_type</entry>
2366 </row>
2367 <row><entry spanname="descr">Frame packing arrangement type for H264 SEI.
2368Applicable to the H264 encoder.
2369Possible values are:</entry>
2370 </row>
2371 <row>
2372 <entrytbl spanname="descr" cols="2">
2373 <tbody valign="top">
2374 <row>
2375 <entry><constant>V4L2_MPEG_VIDEO_H264_SEI_FP_ARRANGEMENT_TYPE_CHEKERBOARD</constant>&nbsp;</entry>
2376 <entry>Pixels are alternatively from L and R.</entry>
2377 </row>
2378 <row>
2379 <entry><constant>V4L2_MPEG_VIDEO_H264_SEI_FP_ARRANGEMENT_TYPE_COLUMN</constant>&nbsp;</entry>
2380 <entry>L and R are interlaced by column.</entry>
2381 </row>
2382 <row>
2383 <entry><constant>V4L2_MPEG_VIDEO_H264_SEI_FP_ARRANGEMENT_TYPE_ROW</constant>&nbsp;</entry>
2384 <entry>L and R are interlaced by row.</entry>
2385 </row>
2386 <row>
2387 <entry><constant>V4L2_MPEG_VIDEO_H264_SEI_FP_ARRANGEMENT_TYPE_SIDE_BY_SIDE</constant>&nbsp;</entry>
2388 <entry>L is on the left, R on the right.</entry>
2389 </row>
2390 <row>
2391 <entry><constant>V4L2_MPEG_VIDEO_H264_SEI_FP_ARRANGEMENT_TYPE_TOP_BOTTOM</constant>&nbsp;</entry>
2392 <entry>L is on top, R on bottom.</entry>
2393 </row>
2394 <row>
2395 <entry><constant>V4L2_MPEG_VIDEO_H264_SEI_FP_ARRANGEMENT_TYPE_TEMPORAL</constant>&nbsp;</entry>
2396 <entry>One view per frame.</entry>
2397 </row>
2398 </tbody>
2399 </entrytbl>
2400 </row>
2401
2402 <row><entry></entry></row>
2403 <row>
2404 <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H264_FMO</constant>&nbsp;</entry>
2405 <entry>boolean</entry>
2406 </row>
2407 <row><entry spanname="descr">Enables flexible macroblock ordering in the encoded bitstream. It is a technique
2408used for restructuring the ordering of macroblocks in pictures. Applicable to the H264 encoder.</entry>
2409 </row>
2410
2411 <row><entry></entry></row>
2412 <row id="v4l2-mpeg-video-h264-fmo-map-type">
2413 <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H264_FMO_MAP_TYPE</constant>&nbsp;</entry>
2414 <entry>enum&nbsp;v4l2_mpeg_video_h264_fmo_map_type</entry>
2415 </row>
2416 <row><entry spanname="descr">When using FMO, the map type divides the image in different scan patterns of macroblocks.
2417Applicable to the H264 encoder.
2418Possible values are:</entry>
2419 </row>
2420 <row>
2421 <entrytbl spanname="descr" cols="2">
2422 <tbody valign="top">
2423 <row>
2424 <entry><constant>V4L2_MPEG_VIDEO_H264_FMO_MAP_TYPE_INTERLEAVED_SLICES</constant>&nbsp;</entry>
2425 <entry>Slices are interleaved one after other with macroblocks in run length order.</entry>
2426 </row>
2427 <row>
2428 <entry><constant>V4L2_MPEG_VIDEO_H264_FMO_MAP_TYPE_SCATTERED_SLICES</constant>&nbsp;</entry>
2429 <entry>Scatters the macroblocks based on a mathematical function known to both encoder and decoder.</entry>
2430 </row>
2431 <row>
2432 <entry><constant>V4L2_MPEG_VIDEO_H264_FMO_MAP_TYPE_FOREGROUND_WITH_LEFT_OVER</constant>&nbsp;</entry>
2433 <entry>Macroblocks arranged in rectangular areas or regions of interest.</entry>
2434 </row>
2435 <row>
2436 <entry><constant>V4L2_MPEG_VIDEO_H264_FMO_MAP_TYPE_BOX_OUT</constant>&nbsp;</entry>
2437 <entry>Slice groups grow in a cyclic way from centre to outwards.</entry>
2438 </row>
2439 <row>
2440 <entry><constant>V4L2_MPEG_VIDEO_H264_FMO_MAP_TYPE_RASTER_SCAN</constant>&nbsp;</entry>
2441 <entry>Slice groups grow in raster scan pattern from left to right.</entry>
2442 </row>
2443 <row>
2444 <entry><constant>V4L2_MPEG_VIDEO_H264_FMO_MAP_TYPE_WIPE_SCAN</constant>&nbsp;</entry>
2445 <entry>Slice groups grow in wipe scan pattern from top to bottom.</entry>
2446 </row>
2447 <row>
2448 <entry><constant>V4L2_MPEG_VIDEO_H264_FMO_MAP_TYPE_EXPLICIT</constant>&nbsp;</entry>
2449 <entry>User defined map type.</entry>
2450 </row>
2451 </tbody>
2452 </entrytbl>
2453 </row>
2454
2455 <row><entry></entry></row>
2456 <row>
2457 <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H264_FMO_SLICE_GROUP</constant>&nbsp;</entry>
2458 <entry>integer</entry>
2459 </row>
2460 <row><entry spanname="descr">Number of slice groups in FMO.
2461Applicable to the H264 encoder.</entry>
2462 </row>
2463
2464 <row><entry></entry></row>
2465 <row id="v4l2-mpeg-video-h264-fmo-change-direction">
2466 <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H264_FMO_CHANGE_DIRECTION</constant>&nbsp;</entry>
2467 <entry>enum&nbsp;v4l2_mpeg_video_h264_fmo_change_dir</entry>
2468 </row>
2469 <row><entry spanname="descr">Specifies a direction of the slice group change for raster and wipe maps.
2470Applicable to the H264 encoder.
2471Possible values are:</entry>
2472 </row>
2473 <row>
2474 <entrytbl spanname="descr" cols="2">
2475 <tbody valign="top">
2476 <row>
2477 <entry><constant>V4L2_MPEG_VIDEO_H264_FMO_CHANGE_DIR_RIGHT</constant>&nbsp;</entry>
2478 <entry>Raster scan or wipe right.</entry>
2479 </row>
2480 <row>
2481 <entry><constant>V4L2_MPEG_VIDEO_H264_FMO_CHANGE_DIR_LEFT</constant>&nbsp;</entry>
2482 <entry>Reverse raster scan or wipe left.</entry>
2483 </row>
2484 </tbody>
2485 </entrytbl>
2486 </row>
2487
2488 <row><entry></entry></row>
2489 <row>
2490 <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H264_FMO_CHANGE_RATE</constant>&nbsp;</entry>
2491 <entry>integer</entry>
2492 </row>
2493 <row><entry spanname="descr">Specifies the size of the first slice group for raster and wipe map.
2494Applicable to the H264 encoder.</entry>
2495 </row>
2496
2497 <row><entry></entry></row>
2498 <row>
2499 <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H264_FMO_RUN_LENGTH</constant>&nbsp;</entry>
2500 <entry>integer</entry>
2501 </row>
2502 <row><entry spanname="descr">Specifies the number of consecutive macroblocks for the interleaved map.
2503Applicable to the H264 encoder.</entry>
2504 </row>
2505
2506 <row><entry></entry></row>
2507 <row>
2508 <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H264_ASO</constant>&nbsp;</entry>
2509 <entry>boolean</entry>
2510 </row>
2511 <row><entry spanname="descr">Enables arbitrary slice ordering in encoded bitstream.
2512Applicable to the H264 encoder.</entry>
2513 </row>
2514
2515 <row><entry></entry></row>
2516 <row>
2517 <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H264_ASO_SLICE_ORDER</constant>&nbsp;</entry>
2518 <entry>integer</entry>
2519 </row><row><entry spanname="descr">Specifies the slice order in ASO. Applicable to the H264 encoder.
2520The supplied 32-bit integer is interpreted as follows (bit
25210 = least significant bit):</entry>
2522 </row>
2523 <row>
2524 <entrytbl spanname="descr" cols="2">
2525 <tbody valign="top">
2526 <row>
2527 <entry>Bit 0:15</entry>
2528 <entry>Slice ID</entry>
2529 </row>
2530 <row>
2531 <entry>Bit 16:32</entry>
2532 <entry>Slice position or order</entry>
2533 </row>
2534 </tbody>
2535 </entrytbl>
2536 </row>
2537
2538 <row><entry></entry></row>
2539 <row>
2540 <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H264_HIERARCHICAL_CODING</constant>&nbsp;</entry>
2541 <entry>boolean</entry>
2542 </row>
2543 <row><entry spanname="descr">Enables H264 hierarchical coding.
2544Applicable to the H264 encoder.</entry>
2545 </row>
2546
2547 <row><entry></entry></row>
2548 <row id="v4l2-mpeg-video-h264-hierarchical-coding-type">
2549 <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H264_HIERARCHICAL_CODING_TYPE</constant>&nbsp;</entry>
2550 <entry>enum&nbsp;v4l2_mpeg_video_h264_hierarchical_coding_type</entry>
2551 </row>
2552 <row><entry spanname="descr">Specifies the hierarchical coding type.
2553Applicable to the H264 encoder.
2554Possible values are:</entry>
2555 </row>
2556 <row>
2557 <entrytbl spanname="descr" cols="2">
2558 <tbody valign="top">
2559 <row>
2560 <entry><constant>V4L2_MPEG_VIDEO_H264_HIERARCHICAL_CODING_B</constant>&nbsp;</entry>
2561 <entry>Hierarchical B coding.</entry>
2562 </row>
2563 <row>
2564 <entry><constant>V4L2_MPEG_VIDEO_H264_HIERARCHICAL_CODING_P</constant>&nbsp;</entry>
2565 <entry>Hierarchical P coding.</entry>
2566 </row>
2567 </tbody>
2568 </entrytbl>
2569 </row>
2570
2571 <row><entry></entry></row>
2572 <row>
2573 <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H264_HIERARCHICAL_CODING_LAYER</constant>&nbsp;</entry>
2574 <entry>integer</entry>
2575 </row>
2576 <row><entry spanname="descr">Specifies the number of hierarchical coding layers.
2577Applicable to the H264 encoder.</entry>
2578 </row>
2579
2580 <row><entry></entry></row>
2581 <row>
2582 <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H264_HIERARCHICAL_CODING_LAYER_QP</constant>&nbsp;</entry>
2583 <entry>integer</entry>
2584 </row><row><entry spanname="descr">Specifies a user defined QP for each layer. Applicable to the H264 encoder.
2585The supplied 32-bit integer is interpreted as follows (bit
25860 = least significant bit):</entry>
2587 </row>
2588 <row>
2589 <entrytbl spanname="descr" cols="2">
2590 <tbody valign="top">
2591 <row>
2592 <entry>Bit 0:15</entry>
2593 <entry>QP value</entry>
2594 </row>
2595 <row>
2596 <entry>Bit 16:32</entry>
2597 <entry>Layer number</entry>
2598 </row>
2599 </tbody>
2600 </entrytbl>
2601 </row>
2602
2337 </tbody> 2603 </tbody>
2338 </tgroup> 2604 </tgroup>
2339 </table> 2605 </table>
@@ -3505,7 +3771,7 @@ This encodes up to 31 pre-defined programme types.</entry>
3505 </row> 3771 </row>
3506 <row><entry spanname="descr">Sets the Programme Service name (PS_NAME) for transmission. 3772 <row><entry spanname="descr">Sets the Programme Service name (PS_NAME) for transmission.
3507It is intended for static display on a receiver. It is the primary aid to listeners in programme service 3773It is intended for static display on a receiver. It is the primary aid to listeners in programme service
3508identification and selection. In Annex E of <xref linkend="en50067" />, the RDS specification, 3774identification and selection. In Annex E of <xref linkend="iec62106" />, the RDS specification,
3509there is a full description of the correct character encoding for Programme Service name strings. 3775there is a full description of the correct character encoding for Programme Service name strings.
3510Also from RDS specification, PS is usually a single eight character text. However, it is also possible 3776Also from RDS specification, PS is usually a single eight character text. However, it is also possible
3511to find receivers which can scroll strings sized as 8 x N characters. So, this control must be configured 3777to find receivers which can scroll strings sized as 8 x N characters. So, this control must be configured
@@ -3519,7 +3785,7 @@ with steps of 8 characters. The result is it must always contain a string with s
3519what is being broadcasted. RDS Radio Text can be applied when broadcaster wishes to transmit longer PS names, 3785what is being broadcasted. RDS Radio Text can be applied when broadcaster wishes to transmit longer PS names,
3520programme-related information or any other text. In these cases, RadioText should be used in addition to 3786programme-related information or any other text. In these cases, RadioText should be used in addition to
3521<constant>V4L2_CID_RDS_TX_PS_NAME</constant>. The encoding for Radio Text strings is also fully described 3787<constant>V4L2_CID_RDS_TX_PS_NAME</constant>. The encoding for Radio Text strings is also fully described
3522in Annex E of <xref linkend="en50067" />. The length of Radio Text strings depends on which RDS Block is being 3788in Annex E of <xref linkend="iec62106" />. The length of Radio Text strings depends on which RDS Block is being
3523used to transmit it, either 32 (2A block) or 64 (2B block). However, it is also possible 3789used to transmit it, either 32 (2A block) or 64 (2B block). However, it is also possible
3524to find receivers which can scroll strings sized as 32 x N or 64 x N characters. So, this control must be configured 3790to find receivers which can scroll strings sized as 32 x N or 64 x N characters. So, this control must be configured
3525with steps of 32 or 64 characters. The result is it must always contain a string with size multiple of 32 or 64. </entry> 3791with steps of 32 or 64 characters. The result is it must always contain a string with size multiple of 32 or 64. </entry>
@@ -3650,7 +3916,7 @@ manually or automatically if set to zero. Unit, range and step are driver-specif
3650 </table> 3916 </table>
3651 3917
3652<para>For more details about RDS specification, refer to 3918<para>For more details about RDS specification, refer to
3653<xref linkend="en50067" /> document, from CENELEC.</para> 3919<xref linkend="iec62106" /> document, from CENELEC.</para>
3654 </section> 3920 </section>
3655 3921
3656 <section id="flash-controls"> 3922 <section id="flash-controls">
@@ -3717,232 +3983,231 @@ interface and may change in the future.</para>
3717 use case involving camera or individually. 3983 use case involving camera or individually.
3718 </para> 3984 </para>
3719 3985
3720 </section>
3721 3986
3987 <table pgwide="1" frame="none" id="flash-control-id">
3988 <title>Flash Control IDs</title>
3989
3990 <tgroup cols="4">
3991 <colspec colname="c1" colwidth="1*" />
3992 <colspec colname="c2" colwidth="6*" />
3993 <colspec colname="c3" colwidth="2*" />
3994 <colspec colname="c4" colwidth="6*" />
3995 <spanspec namest="c1" nameend="c2" spanname="id" />
3996 <spanspec namest="c2" nameend="c4" spanname="descr" />
3997 <thead>
3998 <row>
3999 <entry spanname="id" align="left">ID</entry>
4000 <entry align="left">Type</entry>
4001 </row><row rowsep="1"><entry spanname="descr" align="left">Description</entry>
4002 </row>
4003 </thead>
4004 <tbody valign="top">
4005 <row><entry></entry></row>
4006 <row>
4007 <entry spanname="id"><constant>V4L2_CID_FLASH_CLASS</constant></entry>
4008 <entry>class</entry>
4009 </row>
4010 <row>
4011 <entry spanname="descr">The FLASH class descriptor.</entry>
4012 </row>
4013 <row>
4014 <entry spanname="id"><constant>V4L2_CID_FLASH_LED_MODE</constant></entry>
4015 <entry>menu</entry>
4016 </row>
4017 <row id="v4l2-flash-led-mode">
4018 <entry spanname="descr">Defines the mode of the flash LED,
4019 the high-power white LED attached to the flash controller.
4020 Setting this control may not be possible in presence of
4021 some faults. See V4L2_CID_FLASH_FAULT.</entry>
4022 </row>
4023 <row>
4024 <entrytbl spanname="descr" cols="2">
4025 <tbody valign="top">
4026 <row>
4027 <entry><constant>V4L2_FLASH_LED_MODE_NONE</constant></entry>
4028 <entry>Off.</entry>
4029 </row>
4030 <row>
4031 <entry><constant>V4L2_FLASH_LED_MODE_FLASH</constant></entry>
4032 <entry>Flash mode.</entry>
4033 </row>
4034 <row>
4035 <entry><constant>V4L2_FLASH_LED_MODE_TORCH</constant></entry>
4036 <entry>Torch mode. See V4L2_CID_FLASH_TORCH_INTENSITY.</entry>
4037 </row>
4038 </tbody>
4039 </entrytbl>
4040 </row>
4041 <row>
4042 <entry spanname="id"><constant>V4L2_CID_FLASH_STROBE_SOURCE</constant></entry>
4043 <entry>menu</entry>
4044 </row>
4045 <row id="v4l2-flash-strobe-source"><entry
4046 spanname="descr">Defines the source of the flash LED
4047 strobe.</entry>
4048 </row>
4049 <row>
4050 <entrytbl spanname="descr" cols="2">
4051 <tbody valign="top">
4052 <row>
4053 <entry><constant>V4L2_FLASH_STROBE_SOURCE_SOFTWARE</constant></entry>
4054 <entry>The flash strobe is triggered by using
4055 the V4L2_CID_FLASH_STROBE control.</entry>
4056 </row>
4057 <row>
4058 <entry><constant>V4L2_FLASH_STROBE_SOURCE_EXTERNAL</constant></entry>
4059 <entry>The flash strobe is triggered by an
4060 external source. Typically this is a sensor,
4061 which makes it possible to synchronises the
4062 flash strobe start to exposure start.</entry>
4063 </row>
4064 </tbody>
4065 </entrytbl>
4066 </row>
4067 <row>
4068 <entry spanname="id"><constant>V4L2_CID_FLASH_STROBE</constant></entry>
4069 <entry>button</entry>
4070 </row>
4071 <row>
4072 <entry spanname="descr">Strobe flash. Valid when
4073 V4L2_CID_FLASH_LED_MODE is set to
4074 V4L2_FLASH_LED_MODE_FLASH and V4L2_CID_FLASH_STROBE_SOURCE
4075 is set to V4L2_FLASH_STROBE_SOURCE_SOFTWARE. Setting this
4076 control may not be possible in presence of some faults.
4077 See V4L2_CID_FLASH_FAULT.</entry>
4078 </row>
4079 <row>
4080 <entry spanname="id"><constant>V4L2_CID_FLASH_STROBE_STOP</constant></entry>
4081 <entry>button</entry>
4082 </row>
4083 <row><entry spanname="descr">Stop flash strobe immediately.</entry>
4084 </row>
4085 <row>
4086 <entry spanname="id"><constant>V4L2_CID_FLASH_STROBE_STATUS</constant></entry>
4087 <entry>boolean</entry>
4088 </row>
4089 <row>
4090 <entry spanname="descr">Strobe status: whether the flash
4091 is strobing at the moment or not. This is a read-only
4092 control.</entry>
4093 </row>
4094 <row>
4095 <entry spanname="id"><constant>V4L2_CID_FLASH_TIMEOUT</constant></entry>
4096 <entry>integer</entry>
4097 </row>
4098 <row>
4099 <entry spanname="descr">Hardware timeout for flash. The
4100 flash strobe is stopped after this period of time has
4101 passed from the start of the strobe.</entry>
4102 </row>
4103 <row>
4104 <entry spanname="id"><constant>V4L2_CID_FLASH_INTENSITY</constant></entry>
4105 <entry>integer</entry>
4106 </row>
4107 <row>
4108 <entry spanname="descr">Intensity of the flash strobe when
4109 the flash LED is in flash mode
4110 (V4L2_FLASH_LED_MODE_FLASH). The unit should be milliamps
4111 (mA) if possible.</entry>
4112 </row>
4113 <row>
4114 <entry spanname="id"><constant>V4L2_CID_FLASH_TORCH_INTENSITY</constant></entry>
4115 <entry>integer</entry>
4116 </row>
4117 <row>
4118 <entry spanname="descr">Intensity of the flash LED in
4119 torch mode (V4L2_FLASH_LED_MODE_TORCH). The unit should be
4120 milliamps (mA) if possible. Setting this control may not
4121 be possible in presence of some faults. See
4122 V4L2_CID_FLASH_FAULT.</entry>
4123 </row>
4124 <row>
4125 <entry spanname="id"><constant>V4L2_CID_FLASH_INDICATOR_INTENSITY</constant></entry>
4126 <entry>integer</entry>
4127 </row>
4128 <row>
4129 <entry spanname="descr">Intensity of the indicator LED.
4130 The indicator LED may be fully independent of the flash
4131 LED. The unit should be microamps (uA) if possible.</entry>
4132 </row>
4133 <row>
4134 <entry spanname="id"><constant>V4L2_CID_FLASH_FAULT</constant></entry>
4135 <entry>bitmask</entry>
4136 </row>
4137 <row>
4138 <entry spanname="descr">Faults related to the flash. The
4139 faults tell about specific problems in the flash chip
4140 itself or the LEDs attached to it. Faults may prevent
4141 further use of some of the flash controls. In particular,
4142 V4L2_CID_FLASH_LED_MODE is set to V4L2_FLASH_LED_MODE_NONE
4143 if the fault affects the flash LED. Exactly which faults
4144 have such an effect is chip dependent. Reading the faults
4145 resets the control and returns the chip to a usable state
4146 if possible.</entry>
4147 </row>
4148 <row>
4149 <entrytbl spanname="descr" cols="2">
4150 <tbody valign="top">
4151 <row>
4152 <entry><constant>V4L2_FLASH_FAULT_OVER_VOLTAGE</constant></entry>
4153 <entry>Flash controller voltage to the flash LED
4154 has exceeded the limit specific to the flash
4155 controller.</entry>
4156 </row>
4157 <row>
4158 <entry><constant>V4L2_FLASH_FAULT_TIMEOUT</constant></entry>
4159 <entry>The flash strobe was still on when
4160 the timeout set by the user ---
4161 V4L2_CID_FLASH_TIMEOUT control --- has expired.
4162 Not all flash controllers may set this in all
4163 such conditions.</entry>
4164 </row>
4165 <row>
4166 <entry><constant>V4L2_FLASH_FAULT_OVER_TEMPERATURE</constant></entry>
4167 <entry>The flash controller has overheated.</entry>
4168 </row>
4169 <row>
4170 <entry><constant>V4L2_FLASH_FAULT_SHORT_CIRCUIT</constant></entry>
4171 <entry>The short circuit protection of the flash
4172 controller has been triggered.</entry>
4173 </row>
4174 <row>
4175 <entry><constant>V4L2_FLASH_FAULT_OVER_CURRENT</constant></entry>
4176 <entry>Current in the LED power supply has exceeded the limit
4177 specific to the flash controller.</entry>
4178 </row>
4179 <row>
4180 <entry><constant>V4L2_FLASH_FAULT_INDICATOR</constant></entry>
4181 <entry>The flash controller has detected a short or open
4182 circuit condition on the indicator LED.</entry>
4183 </row>
4184 </tbody>
4185 </entrytbl>
4186 </row>
4187 <row>
4188 <entry spanname="id"><constant>V4L2_CID_FLASH_CHARGE</constant></entry>
4189 <entry>boolean</entry>
4190 </row>
4191 <row><entry spanname="descr">Enable or disable charging of the xenon
4192 flash capacitor.</entry>
4193 </row>
4194 <row>
4195 <entry spanname="id"><constant>V4L2_CID_FLASH_READY</constant></entry>
4196 <entry>boolean</entry>
4197 </row>
4198 <row>
4199 <entry spanname="descr">Is the flash ready to strobe?
4200 Xenon flashes require their capacitors charged before
4201 strobing. LED flashes often require a cooldown period
4202 after strobe during which another strobe will not be
4203 possible. This is a read-only control.</entry>
4204 </row>
4205 <row><entry></entry></row>
4206 </tbody>
4207 </tgroup>
4208 </table>
4209 </section>
3722 </section> 4210 </section>
3723
3724 <table pgwide="1" frame="none" id="flash-control-id">
3725 <title>Flash Control IDs</title>
3726
3727 <tgroup cols="4">
3728 <colspec colname="c1" colwidth="1*" />
3729 <colspec colname="c2" colwidth="6*" />
3730 <colspec colname="c3" colwidth="2*" />
3731 <colspec colname="c4" colwidth="6*" />
3732 <spanspec namest="c1" nameend="c2" spanname="id" />
3733 <spanspec namest="c2" nameend="c4" spanname="descr" />
3734 <thead>
3735 <row>
3736 <entry spanname="id" align="left">ID</entry>
3737 <entry align="left">Type</entry>
3738 </row><row rowsep="1"><entry spanname="descr" align="left">Description</entry>
3739 </row>
3740 </thead>
3741 <tbody valign="top">
3742 <row><entry></entry></row>
3743 <row>
3744 <entry spanname="id"><constant>V4L2_CID_FLASH_CLASS</constant></entry>
3745 <entry>class</entry>
3746 </row>
3747 <row>
3748 <entry spanname="descr">The FLASH class descriptor.</entry>
3749 </row>
3750 <row>
3751 <entry spanname="id"><constant>V4L2_CID_FLASH_LED_MODE</constant></entry>
3752 <entry>menu</entry>
3753 </row>
3754 <row id="v4l2-flash-led-mode">
3755 <entry spanname="descr">Defines the mode of the flash LED,
3756 the high-power white LED attached to the flash controller.
3757 Setting this control may not be possible in presence of
3758 some faults. See V4L2_CID_FLASH_FAULT.</entry>
3759 </row>
3760 <row>
3761 <entrytbl spanname="descr" cols="2">
3762 <tbody valign="top">
3763 <row>
3764 <entry><constant>V4L2_FLASH_LED_MODE_NONE</constant></entry>
3765 <entry>Off.</entry>
3766 </row>
3767 <row>
3768 <entry><constant>V4L2_FLASH_LED_MODE_FLASH</constant></entry>
3769 <entry>Flash mode.</entry>
3770 </row>
3771 <row>
3772 <entry><constant>V4L2_FLASH_LED_MODE_TORCH</constant></entry>
3773 <entry>Torch mode. See V4L2_CID_FLASH_TORCH_INTENSITY.</entry>
3774 </row>
3775 </tbody>
3776 </entrytbl>
3777 </row>
3778 <row>
3779 <entry spanname="id"><constant>V4L2_CID_FLASH_STROBE_SOURCE</constant></entry>
3780 <entry>menu</entry>
3781 </row>
3782 <row id="v4l2-flash-strobe-source"><entry
3783 spanname="descr">Defines the source of the flash LED
3784 strobe.</entry>
3785 </row>
3786 <row>
3787 <entrytbl spanname="descr" cols="2">
3788 <tbody valign="top">
3789 <row>
3790 <entry><constant>V4L2_FLASH_STROBE_SOURCE_SOFTWARE</constant></entry>
3791 <entry>The flash strobe is triggered by using
3792 the V4L2_CID_FLASH_STROBE control.</entry>
3793 </row>
3794 <row>
3795 <entry><constant>V4L2_FLASH_STROBE_SOURCE_EXTERNAL</constant></entry>
3796 <entry>The flash strobe is triggered by an
3797 external source. Typically this is a sensor,
3798 which makes it possible to synchronises the
3799 flash strobe start to exposure start.</entry>
3800 </row>
3801 </tbody>
3802 </entrytbl>
3803 </row>
3804 <row>
3805 <entry spanname="id"><constant>V4L2_CID_FLASH_STROBE</constant></entry>
3806 <entry>button</entry>
3807 </row>
3808 <row>
3809 <entry spanname="descr">Strobe flash. Valid when
3810 V4L2_CID_FLASH_LED_MODE is set to
3811 V4L2_FLASH_LED_MODE_FLASH and V4L2_CID_FLASH_STROBE_SOURCE
3812 is set to V4L2_FLASH_STROBE_SOURCE_SOFTWARE. Setting this
3813 control may not be possible in presence of some faults.
3814 See V4L2_CID_FLASH_FAULT.</entry>
3815 </row>
3816 <row>
3817 <entry spanname="id"><constant>V4L2_CID_FLASH_STROBE_STOP</constant></entry>
3818 <entry>button</entry>
3819 </row>
3820 <row><entry spanname="descr">Stop flash strobe immediately.</entry>
3821 </row>
3822 <row>
3823 <entry spanname="id"><constant>V4L2_CID_FLASH_STROBE_STATUS</constant></entry>
3824 <entry>boolean</entry>
3825 </row>
3826 <row>
3827 <entry spanname="descr">Strobe status: whether the flash
3828 is strobing at the moment or not. This is a read-only
3829 control.</entry>
3830 </row>
3831 <row>
3832 <entry spanname="id"><constant>V4L2_CID_FLASH_TIMEOUT</constant></entry>
3833 <entry>integer</entry>
3834 </row>
3835 <row>
3836 <entry spanname="descr">Hardware timeout for flash. The
3837 flash strobe is stopped after this period of time has
3838 passed from the start of the strobe.</entry>
3839 </row>
3840 <row>
3841 <entry spanname="id"><constant>V4L2_CID_FLASH_INTENSITY</constant></entry>
3842 <entry>integer</entry>
3843 </row>
3844 <row>
3845 <entry spanname="descr">Intensity of the flash strobe when
3846 the flash LED is in flash mode
3847 (V4L2_FLASH_LED_MODE_FLASH). The unit should be milliamps
3848 (mA) if possible.</entry>
3849 </row>
3850 <row>
3851 <entry spanname="id"><constant>V4L2_CID_FLASH_TORCH_INTENSITY</constant></entry>
3852 <entry>integer</entry>
3853 </row>
3854 <row>
3855 <entry spanname="descr">Intensity of the flash LED in
3856 torch mode (V4L2_FLASH_LED_MODE_TORCH). The unit should be
3857 milliamps (mA) if possible. Setting this control may not
3858 be possible in presence of some faults. See
3859 V4L2_CID_FLASH_FAULT.</entry>
3860 </row>
3861 <row>
3862 <entry spanname="id"><constant>V4L2_CID_FLASH_INDICATOR_INTENSITY</constant></entry>
3863 <entry>integer</entry>
3864 </row>
3865 <row>
3866 <entry spanname="descr">Intensity of the indicator LED.
3867 The indicator LED may be fully independent of the flash
3868 LED. The unit should be microamps (uA) if possible.</entry>
3869 </row>
3870 <row>
3871 <entry spanname="id"><constant>V4L2_CID_FLASH_FAULT</constant></entry>
3872 <entry>bitmask</entry>
3873 </row>
3874 <row>
3875 <entry spanname="descr">Faults related to the flash. The
3876 faults tell about specific problems in the flash chip
3877 itself or the LEDs attached to it. Faults may prevent
3878 further use of some of the flash controls. In particular,
3879 V4L2_CID_FLASH_LED_MODE is set to V4L2_FLASH_LED_MODE_NONE
3880 if the fault affects the flash LED. Exactly which faults
3881 have such an effect is chip dependent. Reading the faults
3882 resets the control and returns the chip to a usable state
3883 if possible.</entry>
3884 </row>
3885 <row>
3886 <entrytbl spanname="descr" cols="2">
3887 <tbody valign="top">
3888 <row>
3889 <entry><constant>V4L2_FLASH_FAULT_OVER_VOLTAGE</constant></entry>
3890 <entry>Flash controller voltage to the flash LED
3891 has exceeded the limit specific to the flash
3892 controller.</entry>
3893 </row>
3894 <row>
3895 <entry><constant>V4L2_FLASH_FAULT_TIMEOUT</constant></entry>
3896 <entry>The flash strobe was still on when
3897 the timeout set by the user ---
3898 V4L2_CID_FLASH_TIMEOUT control --- has expired.
3899 Not all flash controllers may set this in all
3900 such conditions.</entry>
3901 </row>
3902 <row>
3903 <entry><constant>V4L2_FLASH_FAULT_OVER_TEMPERATURE</constant></entry>
3904 <entry>The flash controller has overheated.</entry>
3905 </row>
3906 <row>
3907 <entry><constant>V4L2_FLASH_FAULT_SHORT_CIRCUIT</constant></entry>
3908 <entry>The short circuit protection of the flash
3909 controller has been triggered.</entry>
3910 </row>
3911 <row>
3912 <entry><constant>V4L2_FLASH_FAULT_OVER_CURRENT</constant></entry>
3913 <entry>Current in the LED power supply has exceeded the limit
3914 specific to the flash controller.</entry>
3915 </row>
3916 <row>
3917 <entry><constant>V4L2_FLASH_FAULT_INDICATOR</constant></entry>
3918 <entry>The flash controller has detected a short or open
3919 circuit condition on the indicator LED.</entry>
3920 </row>
3921 </tbody>
3922 </entrytbl>
3923 </row>
3924 <row>
3925 <entry spanname="id"><constant>V4L2_CID_FLASH_CHARGE</constant></entry>
3926 <entry>boolean</entry>
3927 </row>
3928 <row><entry spanname="descr">Enable or disable charging of the xenon
3929 flash capacitor.</entry>
3930 </row>
3931 <row>
3932 <entry spanname="id"><constant>V4L2_CID_FLASH_READY</constant></entry>
3933 <entry>boolean</entry>
3934 </row>
3935 <row>
3936 <entry spanname="descr">Is the flash ready to strobe?
3937 Xenon flashes require their capacitors charged before
3938 strobing. LED flashes often require a cooldown period
3939 after strobe during which another strobe will not be
3940 possible. This is a read-only control.</entry>
3941 </row>
3942 <row><entry></entry></row>
3943 </tbody>
3944 </tgroup>
3945 </table>
3946 </section> 4211 </section>
3947 4212
3948 <section id="jpeg-controls"> 4213 <section id="jpeg-controls">
@@ -4268,6 +4533,177 @@ interface and may change in the future.</para>
4268 pixels / second. 4533 pixels / second.
4269 </entry> 4534 </entry>
4270 </row> 4535 </row>
4536 <row>
4537 <entry spanname="id"><constant>V4L2_CID_TEST_PATTERN</constant></entry>
4538 <entry>menu</entry>
4539 </row>
4540 <row id="v4l2-test-pattern">
4541 <entry spanname="descr"> Some capture/display/sensor devices have
4542 the capability to generate test pattern images. These hardware
4543 specific test patterns can be used to test if a device is working
4544 properly.</entry>
4545 </row>
4546 <row><entry></entry></row>
4547 </tbody>
4548 </tgroup>
4549 </table>
4550
4551 </section>
4552
4553 <section id="dv-controls">
4554 <title>Digital Video Control Reference</title>
4555
4556 <note>
4557 <title>Experimental</title>
4558
4559 <para>This is an <link
4560 linkend="experimental">experimental</link> interface and may
4561 change in the future.</para>
4562 </note>
4563
4564 <para>
4565 The Digital Video control class is intended to control receivers
4566 and transmitters for <ulink url="http://en.wikipedia.org/wiki/Vga">VGA</ulink>,
4567 <ulink url="http://en.wikipedia.org/wiki/Digital_Visual_Interface">DVI</ulink>
4568 (Digital Visual Interface), HDMI (<xref linkend="hdmi" />) and DisplayPort (<xref linkend="dp" />).
4569 These controls are generally expected to be private to the receiver or transmitter
4570 subdevice that implements them, so they are only exposed on the
4571 <filename>/dev/v4l-subdev*</filename> device node.
4572 </para>
4573
4574 <para>Note that these devices can have multiple input or output pads which are
4575 hooked up to e.g. HDMI connectors. Even though the subdevice will receive or
4576 transmit video from/to only one of those pads, the other pads can still be
4577 active when it comes to EDID (Extended Display Identification Data,
4578 <xref linkend="vesaedid" />) and HDCP (High-bandwidth Digital Content
4579 Protection System, <xref linkend="hdcp" />) processing, allowing the device
4580 to do the fairly slow EDID/HDCP handling in advance. This allows for quick
4581 switching between connectors.</para>
4582
4583 <para>These pads appear in several of the controls in this section as
4584 bitmasks, one bit for each pad. Bit 0 corresponds to pad 0, bit 1 to pad 1,
4585 etc. The maximum value of the control is the set of valid pads.</para>
4586
4587 <table pgwide="1" frame="none" id="dv-control-id">
4588 <title>Digital Video Control IDs</title>
4589
4590 <tgroup cols="4">
4591 <colspec colname="c1" colwidth="1*" />
4592 <colspec colname="c2" colwidth="6*" />
4593 <colspec colname="c3" colwidth="2*" />
4594 <colspec colname="c4" colwidth="6*" />
4595 <spanspec namest="c1" nameend="c2" spanname="id" />
4596 <spanspec namest="c2" nameend="c4" spanname="descr" />
4597 <thead>
4598 <row>
4599 <entry spanname="id" align="left">ID</entry>
4600 <entry align="left">Type</entry>
4601 </row><row rowsep="1"><entry spanname="descr" align="left">Description</entry>
4602 </row>
4603 </thead>
4604 <tbody valign="top">
4605 <row><entry></entry></row>
4606 <row>
4607 <entry spanname="id"><constant>V4L2_CID_DV_CLASS</constant></entry>
4608 <entry>class</entry>
4609 </row>
4610 <row>
4611 <entry spanname="descr">The Digital Video class descriptor.</entry>
4612 </row>
4613 <row>
4614 <entry spanname="id"><constant>V4L2_CID_DV_TX_HOTPLUG</constant></entry>
4615 <entry>bitmask</entry>
4616 </row>
4617 <row>
4618 <entry spanname="descr">Many connectors have a hotplug pin which is high
4619 if EDID information is available from the source. This control shows the
4620 state of the hotplug pin as seen by the transmitter.
4621 Each bit corresponds to an output pad on the transmitter. If an output pad
4622 does not have an associated hotplug pin, then the bit for that pad will be 0.
4623 This read-only control is applicable to DVI-D, HDMI and DisplayPort connectors.
4624 </entry>
4625 </row>
4626 <row>
4627 <entry spanname="id"><constant>V4L2_CID_DV_TX_RXSENSE</constant></entry>
4628 <entry>bitmask</entry>
4629 </row>
4630 <row>
4631 <entry spanname="descr">Rx Sense is the detection of pull-ups on the TMDS
4632 clock lines. This normally means that the sink has left/entered standby (i.e.
4633 the transmitter can sense that the receiver is ready to receive video).
4634 Each bit corresponds to an output pad on the transmitter. If an output pad
4635 does not have an associated Rx Sense, then the bit for that pad will be 0.
4636 This read-only control is applicable to DVI-D and HDMI devices.
4637 </entry>
4638 </row>
4639 <row>
4640 <entry spanname="id"><constant>V4L2_CID_DV_TX_EDID_PRESENT</constant></entry>
4641 <entry>bitmask</entry>
4642 </row>
4643 <row>
4644 <entry spanname="descr">When the transmitter sees the hotplug signal from the
4645 receiver it will attempt to read the EDID. If set, then the transmitter has read
4646 at least the first block (= 128 bytes).
4647 Each bit corresponds to an output pad on the transmitter. If an output pad
4648 does not support EDIDs, then the bit for that pad will be 0.
4649 This read-only control is applicable to VGA, DVI-A/D, HDMI and DisplayPort connectors.
4650 </entry>
4651 </row>
4652 <row>
4653 <entry spanname="id"><constant>V4L2_CID_DV_TX_MODE</constant></entry>
4654 <entry id="v4l2-dv-tx-mode">enum v4l2_dv_tx_mode</entry>
4655 </row>
4656 <row>
4657 <entry spanname="descr">HDMI transmitters can transmit in DVI-D mode (just video)
4658 or in HDMI mode (video + audio + auxiliary data). This control selects which mode
4659 to use: V4L2_DV_TX_MODE_DVI_D or V4L2_DV_TX_MODE_HDMI.
4660 This control is applicable to HDMI connectors.
4661 </entry>
4662 </row>
4663 <row>
4664 <entry spanname="id"><constant>V4L2_CID_DV_TX_RGB_RANGE</constant></entry>
4665 <entry id="v4l2-dv-rgb-range">enum v4l2_dv_rgb_range</entry>
4666 </row>
4667 <row>
4668 <entry spanname="descr">Select the quantization range for RGB output. V4L2_DV_RANGE_AUTO
4669 follows the RGB quantization range specified in the standard for the video interface
4670 (ie. <xref linkend="cea861" /> for HDMI). V4L2_DV_RANGE_LIMITED and V4L2_DV_RANGE_FULL override the standard
4671 to be compatible with sinks that have not implemented the standard correctly
4672 (unfortunately quite common for HDMI and DVI-D). Full range allows all possible values to be
4673 used whereas limited range sets the range to (16 &lt;&lt; (N-8)) - (235 &lt;&lt; (N-8))
4674 where N is the number of bits per component.
4675 This control is applicable to VGA, DVI-A/D, HDMI and DisplayPort connectors.
4676 </entry>
4677 </row>
4678 <row>
4679 <entry spanname="id"><constant>V4L2_CID_DV_RX_POWER_PRESENT</constant></entry>
4680 <entry>bitmask</entry>
4681 </row>
4682 <row>
4683 <entry spanname="descr">Detects whether the receiver receives power from the source
4684 (e.g. HDMI carries 5V on one of the pins). This is often used to power an eeprom
4685 which contains EDID information, such that the source can read the EDID even if
4686 the sink is in standby/power off.
4687 Each bit corresponds to an input pad on the transmitter. If an input pad
4688 cannot detect whether power is present, then the bit for that pad will be 0.
4689 This read-only control is applicable to DVI-D, HDMI and DisplayPort connectors.
4690 </entry>
4691 </row>
4692 <row>
4693 <entry spanname="id"><constant>V4L2_CID_DV_RX_RGB_RANGE</constant></entry>
4694 <entry>enum v4l2_dv_rgb_range</entry>
4695 </row>
4696 <row>
4697 <entry spanname="descr">Select the quantization range for RGB input. V4L2_DV_RANGE_AUTO
4698 follows the RGB quantization range specified in the standard for the video interface
4699 (ie. <xref linkend="cea861" /> for HDMI). V4L2_DV_RANGE_LIMITED and V4L2_DV_RANGE_FULL override the standard
4700 to be compatible with sources that have not implemented the standard correctly
4701 (unfortunately quite common for HDMI and DVI-D). Full range allows all possible values to be
4702 used whereas limited range sets the range to (16 &lt;&lt; (N-8)) - (235 &lt;&lt; (N-8))
4703 where N is the number of bits per component.
4704 This control is applicable to VGA, DVI-A/D, HDMI and DisplayPort connectors.
4705 </entry>
4706 </row>
4271 <row><entry></entry></row> 4707 <row><entry></entry></row>
4272 </tbody> 4708 </tbody>
4273 </tgroup> 4709 </tgroup>
diff --git a/Documentation/DocBook/media/v4l/dev-osd.xml b/Documentation/DocBook/media/v4l/dev-osd.xml
index 479d9433869a..dd91d6134e8c 100644
--- a/Documentation/DocBook/media/v4l/dev-osd.xml
+++ b/Documentation/DocBook/media/v4l/dev-osd.xml
@@ -1,13 +1,6 @@
1 <title>Video Output Overlay Interface</title> 1 <title>Video Output Overlay Interface</title>
2 <subtitle>Also known as On-Screen Display (OSD)</subtitle> 2 <subtitle>Also known as On-Screen Display (OSD)</subtitle>
3 3
4 <note>
5 <title>Experimental</title>
6
7 <para>This is an <link linkend="experimental">experimental</link>
8interface and may change in the future.</para>
9 </note>
10
11 <para>Some video output devices can overlay a framebuffer image onto 4 <para>Some video output devices can overlay a framebuffer image onto
12the outgoing video signal. Applications can set up such an overlay 5the outgoing video signal. Applications can set up such an overlay
13using this interface, which borrows structures and ioctls of the <link 6using this interface, which borrows structures and ioctls of the <link
diff --git a/Documentation/DocBook/media/v4l/dev-rds.xml b/Documentation/DocBook/media/v4l/dev-rds.xml
index 38883a419e65..be2f33737323 100644
--- a/Documentation/DocBook/media/v4l/dev-rds.xml
+++ b/Documentation/DocBook/media/v4l/dev-rds.xml
@@ -6,7 +6,7 @@ information, on an inaudible audio subcarrier of a radio program. This
6interface is aimed at devices capable of receiving and/or transmitting RDS 6interface is aimed at devices capable of receiving and/or transmitting RDS
7information.</para> 7information.</para>
8 8
9 <para>For more information see the core RDS standard <xref linkend="en50067" /> 9 <para>For more information see the core RDS standard <xref linkend="iec62106" />
10and the RBDS standard <xref linkend="nrsc4" />.</para> 10and the RBDS standard <xref linkend="nrsc4" />.</para>
11 11
12 <para>Note that the RBDS standard as is used in the USA is almost identical 12 <para>Note that the RBDS standard as is used in the USA is almost identical
diff --git a/Documentation/DocBook/media/v4l/dev-subdev.xml b/Documentation/DocBook/media/v4l/dev-subdev.xml
index a3d9dd093268..d15aaf83f56f 100644
--- a/Documentation/DocBook/media/v4l/dev-subdev.xml
+++ b/Documentation/DocBook/media/v4l/dev-subdev.xml
@@ -374,29 +374,29 @@
374 rectangle --- if it is supported by the hardware.</para> 374 rectangle --- if it is supported by the hardware.</para>
375 375
376 <orderedlist> 376 <orderedlist>
377 <listitem>Sink pad format. The user configures the sink pad 377 <listitem><para>Sink pad format. The user configures the sink pad
378 format. This format defines the parameters of the image the 378 format. This format defines the parameters of the image the
379 entity receives through the pad for further processing.</listitem> 379 entity receives through the pad for further processing.</para></listitem>
380 380
381 <listitem>Sink pad actual crop selection. The sink pad crop 381 <listitem><para>Sink pad actual crop selection. The sink pad crop
382 defines the crop performed to the sink pad format.</listitem> 382 defines the crop performed to the sink pad format.</para></listitem>
383 383
384 <listitem>Sink pad actual compose selection. The size of the 384 <listitem><para>Sink pad actual compose selection. The size of the
385 sink pad compose rectangle defines the scaling ratio compared 385 sink pad compose rectangle defines the scaling ratio compared
386 to the size of the sink pad crop rectangle. The location of 386 to the size of the sink pad crop rectangle. The location of
387 the compose rectangle specifies the location of the actual 387 the compose rectangle specifies the location of the actual
388 sink compose rectangle in the sink compose bounds 388 sink compose rectangle in the sink compose bounds
389 rectangle.</listitem> 389 rectangle.</para></listitem>
390 390
391 <listitem>Source pad actual crop selection. Crop on the source 391 <listitem><para>Source pad actual crop selection. Crop on the source
392 pad defines crop performed to the image in the sink compose 392 pad defines crop performed to the image in the sink compose
393 bounds rectangle.</listitem> 393 bounds rectangle.</para></listitem>
394 394
395 <listitem>Source pad format. The source pad format defines the 395 <listitem><para>Source pad format. The source pad format defines the
396 output pixel format of the subdev, as well as the other 396 output pixel format of the subdev, as well as the other
397 parameters with the exception of the image width and height. 397 parameters with the exception of the image width and height.
398 Width and height are defined by the size of the source pad 398 Width and height are defined by the size of the source pad
399 actual crop selection.</listitem> 399 actual crop selection.</para></listitem>
400 </orderedlist> 400 </orderedlist>
401 401
402 <para>Accessing any of the above rectangles not supported by the 402 <para>Accessing any of the above rectangles not supported by the
diff --git a/Documentation/DocBook/media/v4l/gen-errors.xml b/Documentation/DocBook/media/v4l/gen-errors.xml
index 5bbf3ce1973a..7e29a4e1f696 100644
--- a/Documentation/DocBook/media/v4l/gen-errors.xml
+++ b/Documentation/DocBook/media/v4l/gen-errors.xml
@@ -7,6 +7,15 @@
7 <tbody valign="top"> 7 <tbody valign="top">
8 <!-- Keep it ordered alphabetically --> 8 <!-- Keep it ordered alphabetically -->
9 <row> 9 <row>
10 <entry>EAGAIN (aka EWOULDBLOCK)</entry>
11 <entry>The ioctl can't be handled because the device is in state where
12 it can't perform it. This could happen for example in case where
13 device is sleeping and ioctl is performed to query statistics.
14 It is also returned when the ioctl would need to wait
15 for an event, but the device was opened in non-blocking mode.
16 </entry>
17 </row>
18 <row>
10 <entry>EBADF</entry> 19 <entry>EBADF</entry>
11 <entry>The file descriptor is not a valid.</entry> 20 <entry>The file descriptor is not a valid.</entry>
12 </row> 21 </row>
@@ -51,21 +60,11 @@
51 for periodic transfers (up to 80% of the USB bandwidth).</entry> 60 for periodic transfers (up to 80% of the USB bandwidth).</entry>
52 </row> 61 </row>
53 <row> 62 <row>
54 <entry>ENOSYS or EOPNOTSUPP</entry>
55 <entry>Function not available for this device (dvb API only. Will likely
56 be replaced anytime soon by ENOTTY).</entry>
57 </row>
58 <row>
59 <entry>EPERM</entry> 63 <entry>EPERM</entry>
60 <entry>Permission denied. Can be returned if the device needs write 64 <entry>Permission denied. Can be returned if the device needs write
61 permission, or some special capabilities is needed 65 permission, or some special capabilities is needed
62 (e. g. root)</entry> 66 (e. g. root)</entry>
63 </row> 67 </row>
64 <row>
65 <entry>EWOULDBLOCK</entry>
66 <entry>Operation would block. Used when the ioctl would need to wait
67 for an event, but the device was opened in non-blocking mode.</entry>
68 </row>
69 </tbody> 68 </tbody>
70 </tgroup> 69 </tgroup>
71</table> 70</table>
diff --git a/Documentation/DocBook/media/v4l/io.xml b/Documentation/DocBook/media/v4l/io.xml
index 1885cc0755cb..b5d1cbdc558b 100644
--- a/Documentation/DocBook/media/v4l/io.xml
+++ b/Documentation/DocBook/media/v4l/io.xml
@@ -613,8 +613,8 @@ field is independent of the <structfield>timestamp</structfield> and
613 <entry>__u32</entry> 613 <entry>__u32</entry>
614 <entry><structfield>sequence</structfield></entry> 614 <entry><structfield>sequence</structfield></entry>
615 <entry></entry> 615 <entry></entry>
616 <entry>Set by the driver, counting the frames in the 616 <entry>Set by the driver, counting the frames (not fields!) in
617sequence.</entry> 617sequence. This field is set for both input and output devices.</entry>
618 </row> 618 </row>
619 <row> 619 <row>
620 <entry spanname="hspan"><para>In <link 620 <entry spanname="hspan"><para>In <link
@@ -677,26 +677,24 @@ memory, set by the application. See <xref linkend="userp" /> for details.
677 <entry><structfield>length</structfield></entry> 677 <entry><structfield>length</structfield></entry>
678 <entry></entry> 678 <entry></entry>
679 <entry>Size of the buffer (not the payload) in bytes for the 679 <entry>Size of the buffer (not the payload) in bytes for the
680 single-planar API. For the multi-planar API should contain the 680 single-planar API. For the multi-planar API the application sets
681 number of elements in the <structfield>planes</structfield> array. 681 this to the number of elements in the <structfield>planes</structfield>
682 array. The driver will fill in the actual number of valid elements in
683 that array.
682 </entry> 684 </entry>
683 </row> 685 </row>
684 <row> 686 <row>
685 <entry>__u32</entry> 687 <entry>__u32</entry>
686 <entry><structfield>reserved2</structfield></entry> 688 <entry><structfield>reserved2</structfield></entry>
687 <entry></entry> 689 <entry></entry>
688 <entry>A place holder for future extensions and custom 690 <entry>A place holder for future extensions. Applications
689(driver defined) buffer types
690<constant>V4L2_BUF_TYPE_PRIVATE</constant> and higher. Applications
691should set this to 0.</entry> 691should set this to 0.</entry>
692 </row> 692 </row>
693 <row> 693 <row>
694 <entry>__u32</entry> 694 <entry>__u32</entry>
695 <entry><structfield>reserved</structfield></entry> 695 <entry><structfield>reserved</structfield></entry>
696 <entry></entry> 696 <entry></entry>
697 <entry>A place holder for future extensions and custom 697 <entry>A place holder for future extensions. Applications
698(driver defined) buffer types
699<constant>V4L2_BUF_TYPE_PRIVATE</constant> and higher. Applications
700should set this to 0.</entry> 698should set this to 0.</entry>
701 </row> 699 </row>
702 </tbody> 700 </tbody>
@@ -827,14 +825,7 @@ should set this to 0.</entry>
827 <entry><constant>V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY</constant></entry> 825 <entry><constant>V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY</constant></entry>
828 <entry>8</entry> 826 <entry>8</entry>
829 <entry>Buffer for video output overlay (OSD), see <xref 827 <entry>Buffer for video output overlay (OSD), see <xref
830 linkend="osd" />. Status: <link 828 linkend="osd" />.</entry>
831linkend="experimental">Experimental</link>.</entry>
832 </row>
833 <row>
834 <entry><constant>V4L2_BUF_TYPE_PRIVATE</constant></entry>
835 <entry>0x80</entry>
836 <entry>This and higher values are reserved for custom
837(driver defined) buffer types.</entry>
838 </row> 829 </row>
839 </tbody> 830 </tbody>
840 </tgroup> 831 </tgroup>
diff --git a/Documentation/DocBook/media/v4l/pixfmt-nv12m.xml b/Documentation/DocBook/media/v4l/pixfmt-nv12m.xml
index 5274c24d11e0..a990b34d911a 100644
--- a/Documentation/DocBook/media/v4l/pixfmt-nv12m.xml
+++ b/Documentation/DocBook/media/v4l/pixfmt-nv12m.xml
@@ -1,11 +1,13 @@
1 <refentry id="V4L2-PIX-FMT-NV12M"> 1 <refentry>
2 <refmeta> 2 <refmeta>
3 <refentrytitle>V4L2_PIX_FMT_NV12M ('NM12')</refentrytitle> 3 <refentrytitle>V4L2_PIX_FMT_NV12M ('NM12'), V4L2_PIX_FMT_NV21M ('NM21'), V4L2_PIX_FMT_NV12MT_16X16</refentrytitle>
4 &manvol; 4 &manvol;
5 </refmeta> 5 </refmeta>
6 <refnamediv> 6 <refnamediv>
7 <refname> <constant>V4L2_PIX_FMT_NV12M</constant></refname> 7 <refname id="V4L2-PIX-FMT-NV12M"><constant>V4L2_PIX_FMT_NV12M</constant></refname>
8 <refpurpose>Variation of <constant>V4L2_PIX_FMT_NV12</constant> with planes 8 <refname id="V4L2-PIX-FMT-NV21M"><constant>V4L2_PIX_FMT_NV21M</constant></refname>
9 <refname id="V4L2-PIX-FMT-NV12MT_16X16"><constant>V4L2_PIX_FMT_NV12MT_16X16</constant></refname>
10 <refpurpose>Variation of <constant>V4L2_PIX_FMT_NV12</constant> and <constant>V4L2_PIX_FMT_NV21</constant> with planes
9 non contiguous in memory. </refpurpose> 11 non contiguous in memory. </refpurpose>
10 </refnamediv> 12 </refnamediv>
11 <refsect1> 13 <refsect1>
@@ -22,7 +24,12 @@ The CbCr plane is the same width, in bytes, as the Y plane (and of the image),
22but is half as tall in pixels. Each CbCr pair belongs to four pixels. For example, 24but is half as tall in pixels. Each CbCr pair belongs to four pixels. For example,
23Cb<subscript>0</subscript>/Cr<subscript>0</subscript> belongs to 25Cb<subscript>0</subscript>/Cr<subscript>0</subscript> belongs to
24Y'<subscript>00</subscript>, Y'<subscript>01</subscript>, 26Y'<subscript>00</subscript>, Y'<subscript>01</subscript>,
25Y'<subscript>10</subscript>, Y'<subscript>11</subscript>. </para> 27Y'<subscript>10</subscript>, Y'<subscript>11</subscript>.
28<constant>V4L2_PIX_FMT_NV12MT_16X16</constant> is the tiled version of
29<constant>V4L2_PIX_FMT_NV12M</constant> with 16x16 macroblock tiles. Here pixels
30are arranged in 16x16 2D tiles and tiles are arranged in linear order in memory.
31<constant>V4L2_PIX_FMT_NV21M</constant> is the same as <constant>V4L2_PIX_FMT_NV12M</constant>
32except the Cb and Cr bytes are swapped, the CrCb plane starts with a Cr byte.</para>
26 33
27 <para><constant>V4L2_PIX_FMT_NV12M</constant> is intended to be 34 <para><constant>V4L2_PIX_FMT_NV12M</constant> is intended to be
28used only in drivers and applications that support the multi-planar API, 35used only in drivers and applications that support the multi-planar API,
diff --git a/Documentation/DocBook/media/v4l/pixfmt-srggb10dpcm8.xml b/Documentation/DocBook/media/v4l/pixfmt-srggb10dpcm8.xml
index 8eace3e2e7d4..2d3f0b1aefe0 100644
--- a/Documentation/DocBook/media/v4l/pixfmt-srggb10dpcm8.xml
+++ b/Documentation/DocBook/media/v4l/pixfmt-srggb10dpcm8.xml
@@ -22,8 +22,7 @@
22 with 10 bits per colour compressed to 8 bits each, using DPCM 22 with 10 bits per colour compressed to 8 bits each, using DPCM
23 compression. DPCM, differential pulse-code modulation, is lossy. 23 compression. DPCM, differential pulse-code modulation, is lossy.
24 Each colour component consumes 8 bits of memory. In other respects 24 Each colour component consumes 8 bits of memory. In other respects
25 this format is similar to <xref 25 this format is similar to <xref linkend="pixfmt-srggb10" />.</para>
26 linkend="pixfmt-srggb10">.</xref></para>
27 26
28 </refsect1> 27 </refsect1>
29 </refentry> 28 </refentry>
diff --git a/Documentation/DocBook/media/v4l/pixfmt-yvu420m.xml b/Documentation/DocBook/media/v4l/pixfmt-yvu420m.xml
new file mode 100644
index 000000000000..2330667907c7
--- /dev/null
+++ b/Documentation/DocBook/media/v4l/pixfmt-yvu420m.xml
@@ -0,0 +1,154 @@
1 <refentry id="V4L2-PIX-FMT-YVU420M">
2 <refmeta>
3 <refentrytitle>V4L2_PIX_FMT_YVU420M ('YM21')</refentrytitle>
4 &manvol;
5 </refmeta>
6 <refnamediv>
7 <refname> <constant>V4L2_PIX_FMT_YVU420M</constant></refname>
8 <refpurpose>Variation of <constant>V4L2_PIX_FMT_YVU420</constant>
9 with planes non contiguous in memory. </refpurpose>
10 </refnamediv>
11
12 <refsect1>
13 <title>Description</title>
14
15 <para>This is a multi-planar format, as opposed to a packed format.
16The three components are separated into three sub-images or planes.
17
18The Y plane is first. The Y plane has one byte per pixel. The Cr data
19constitutes the second plane which is half the width and half
20the height of the Y plane (and of the image). Each Cr belongs to four
21pixels, a two-by-two square of the image. For example,
22Cr<subscript>0</subscript> belongs to Y'<subscript>00</subscript>,
23Y'<subscript>01</subscript>, Y'<subscript>10</subscript>, and
24Y'<subscript>11</subscript>. The Cb data, just like the Cr plane, constitutes
25the third plane. </para>
26
27 <para>If the Y plane has pad bytes after each row, then the Cr
28and Cb planes have half as many pad bytes after their rows. In other
29words, two Cx rows (including padding) is exactly as long as one Y row
30(including padding).</para>
31
32 <para><constant>V4L2_PIX_FMT_YVU420M</constant> is intended to be
33used only in drivers and applications that support the multi-planar API,
34described in <xref linkend="planar-apis"/>. </para>
35
36 <example>
37 <title><constant>V4L2_PIX_FMT_YVU420M</constant> 4 &times; 4
38pixel image</title>
39
40 <formalpara>
41 <title>Byte Order.</title>
42 <para>Each cell is one byte.
43 <informaltable frame="none">
44 <tgroup cols="5" align="center">
45 <colspec align="left" colwidth="2*" />
46 <tbody valign="top">
47 <row>
48 <entry>start0&nbsp;+&nbsp;0:</entry>
49 <entry>Y'<subscript>00</subscript></entry>
50 <entry>Y'<subscript>01</subscript></entry>
51 <entry>Y'<subscript>02</subscript></entry>
52 <entry>Y'<subscript>03</subscript></entry>
53 </row>
54 <row>
55 <entry>start0&nbsp;+&nbsp;4:</entry>
56 <entry>Y'<subscript>10</subscript></entry>
57 <entry>Y'<subscript>11</subscript></entry>
58 <entry>Y'<subscript>12</subscript></entry>
59 <entry>Y'<subscript>13</subscript></entry>
60 </row>
61 <row>
62 <entry>start0&nbsp;+&nbsp;8:</entry>
63 <entry>Y'<subscript>20</subscript></entry>
64 <entry>Y'<subscript>21</subscript></entry>
65 <entry>Y'<subscript>22</subscript></entry>
66 <entry>Y'<subscript>23</subscript></entry>
67 </row>
68 <row>
69 <entry>start0&nbsp;+&nbsp;12:</entry>
70 <entry>Y'<subscript>30</subscript></entry>
71 <entry>Y'<subscript>31</subscript></entry>
72 <entry>Y'<subscript>32</subscript></entry>
73 <entry>Y'<subscript>33</subscript></entry>
74 </row>
75 <row><entry></entry></row>
76 <row>
77 <entry>start1&nbsp;+&nbsp;0:</entry>
78 <entry>Cr<subscript>00</subscript></entry>
79 <entry>Cr<subscript>01</subscript></entry>
80 </row>
81 <row>
82 <entry>start1&nbsp;+&nbsp;2:</entry>
83 <entry>Cr<subscript>10</subscript></entry>
84 <entry>Cr<subscript>11</subscript></entry>
85 </row>
86 <row><entry></entry></row>
87 <row>
88 <entry>start2&nbsp;+&nbsp;0:</entry>
89 <entry>Cb<subscript>00</subscript></entry>
90 <entry>Cb<subscript>01</subscript></entry>
91 </row>
92 <row>
93 <entry>start2&nbsp;+&nbsp;2:</entry>
94 <entry>Cb<subscript>10</subscript></entry>
95 <entry>Cb<subscript>11</subscript></entry>
96 </row>
97 </tbody>
98 </tgroup>
99 </informaltable>
100 </para>
101 </formalpara>
102
103 <formalpara>
104 <title>Color Sample Location.</title>
105 <para>
106 <informaltable frame="none">
107 <tgroup cols="7" align="center">
108 <tbody valign="top">
109 <row>
110 <entry></entry>
111 <entry>0</entry><entry></entry><entry>1</entry><entry></entry>
112 <entry>2</entry><entry></entry><entry>3</entry>
113 </row>
114 <row>
115 <entry>0</entry>
116 <entry>Y</entry><entry></entry><entry>Y</entry><entry></entry>
117 <entry>Y</entry><entry></entry><entry>Y</entry>
118 </row>
119 <row>
120 <entry></entry>
121 <entry></entry><entry>C</entry><entry></entry><entry></entry>
122 <entry></entry><entry>C</entry><entry></entry>
123 </row>
124 <row>
125 <entry>1</entry>
126 <entry>Y</entry><entry></entry><entry>Y</entry><entry></entry>
127 <entry>Y</entry><entry></entry><entry>Y</entry>
128 </row>
129 <row>
130 <entry></entry>
131 </row>
132 <row>
133 <entry>2</entry>
134 <entry>Y</entry><entry></entry><entry>Y</entry><entry></entry>
135 <entry>Y</entry><entry></entry><entry>Y</entry>
136 </row>
137 <row>
138 <entry></entry>
139 <entry></entry><entry>C</entry><entry></entry><entry></entry>
140 <entry></entry><entry>C</entry><entry></entry>
141 </row>
142 <row>
143 <entry>3</entry>
144 <entry>Y</entry><entry></entry><entry>Y</entry><entry></entry>
145 <entry>Y</entry><entry></entry><entry>Y</entry>
146 </row>
147 </tbody>
148 </tgroup>
149 </informaltable>
150 </para>
151 </formalpara>
152 </example>
153 </refsect1>
154 </refentry>
diff --git a/Documentation/DocBook/media/v4l/pixfmt.xml b/Documentation/DocBook/media/v4l/pixfmt.xml
index e58934c92895..bf94f417592c 100644
--- a/Documentation/DocBook/media/v4l/pixfmt.xml
+++ b/Documentation/DocBook/media/v4l/pixfmt.xml
@@ -708,6 +708,7 @@ information.</para>
708 &sub-y41p; 708 &sub-y41p;
709 &sub-yuv420; 709 &sub-yuv420;
710 &sub-yuv420m; 710 &sub-yuv420m;
711 &sub-yvu420m;
711 &sub-yuv410; 712 &sub-yuv410;
712 &sub-yuv422p; 713 &sub-yuv422p;
713 &sub-yuv411p; 714 &sub-yuv411p;
@@ -757,6 +758,11 @@ extended control <constant>V4L2_CID_MPEG_STREAM_TYPE</constant>, see
757 <entry>'AVC1'</entry> 758 <entry>'AVC1'</entry>
758 <entry>H264 video elementary stream without start codes.</entry> 759 <entry>H264 video elementary stream without start codes.</entry>
759 </row> 760 </row>
761 <row id="V4L2-PIX-FMT-H264-MVC">
762 <entry><constant>V4L2_PIX_FMT_H264_MVC</constant></entry>
763 <entry>'MVC'</entry>
764 <entry>H264 MVC video elementary stream.</entry>
765 </row>
760 <row id="V4L2-PIX-FMT-H263"> 766 <row id="V4L2-PIX-FMT-H263">
761 <entry><constant>V4L2_PIX_FMT_H263</constant></entry> 767 <entry><constant>V4L2_PIX_FMT_H263</constant></entry>
762 <entry>'H263'</entry> 768 <entry>'H263'</entry>
@@ -792,6 +798,11 @@ extended control <constant>V4L2_CID_MPEG_STREAM_TYPE</constant>, see
792 <entry>'VC1L'</entry> 798 <entry>'VC1L'</entry>
793 <entry>VC1, SMPTE 421M Annex L compliant stream.</entry> 799 <entry>VC1, SMPTE 421M Annex L compliant stream.</entry>
794 </row> 800 </row>
801 <row id="V4L2-PIX-FMT-VP8">
802 <entry><constant>V4L2_PIX_FMT_VP8</constant></entry>
803 <entry>'VP8'</entry>
804 <entry>VP8 video elementary stream.</entry>
805 </row>
795 </tbody> 806 </tbody>
796 </tgroup> 807 </tgroup>
797 </table> 808 </table>
@@ -995,6 +1006,34 @@ the other bits are set to 0.</entry>
995 <entry>Old 6-bit greyscale format. Only the most significant 6 bits of each byte are used, 1006 <entry>Old 6-bit greyscale format. Only the most significant 6 bits of each byte are used,
996the other bits are set to 0.</entry> 1007the other bits are set to 0.</entry>
997 </row> 1008 </row>
1009 <row id="V4L2-PIX-FMT-S5C-UYVY-JPG">
1010 <entry><constant>V4L2_PIX_FMT_S5C_UYVY_JPG</constant></entry>
1011 <entry>'S5CI'</entry>
1012 <entry>Two-planar format used by Samsung S5C73MX cameras. The
1013first plane contains interleaved JPEG and UYVY image data, followed by meta data
1014in form of an array of offsets to the UYVY data blocks. The actual pointer array
1015follows immediately the interleaved JPEG/UYVY data, the number of entries in
1016this array equals the height of the UYVY image. Each entry is a 4-byte unsigned
1017integer in big endian order and it's an offset to a single pixel line of the
1018UYVY image. The first plane can start either with JPEG or UYVY data chunk. The
1019size of a single UYVY block equals the UYVY image's width multiplied by 2. The
1020size of a JPEG chunk depends on the image and can vary with each line.
1021<para>The second plane, at an offset of 4084 bytes, contains a 4-byte offset to
1022the pointer array in the first plane. This offset is followed by a 4-byte value
1023indicating size of the pointer array. All numbers in the second plane are also
1024in big endian order. Remaining data in the second plane is undefined. The
1025information in the second plane allows to easily find location of the pointer
1026array, which can be different for each frame. The size of the pointer array is
1027constant for given UYVY image height.</para>
1028<para>In order to extract UYVY and JPEG frames an application can initially set
1029a data pointer to the start of first plane and then add an offset from the first
1030entry of the pointers table. Such a pointer indicates start of an UYVY image
1031pixel line. Whole UYVY line can be copied to a separate buffer. These steps
1032should be repeated for each line, i.e. the number of entries in the pointer
1033array. Anything what's in between the UYVY lines is JPEG data and should be
1034concatenated to form the JPEG stream. </para>
1035</entry>
1036 </row>
998 </tbody> 1037 </tbody>
999 </tgroup> 1038 </tgroup>
1000 </table> 1039 </table>
diff --git a/Documentation/DocBook/media/v4l/selection-api.xml b/Documentation/DocBook/media/v4l/selection-api.xml
index e7ed5077834d..4c238ce068b0 100644
--- a/Documentation/DocBook/media/v4l/selection-api.xml
+++ b/Documentation/DocBook/media/v4l/selection-api.xml
@@ -40,6 +40,7 @@ cropping and composing rectangles have the same size.</para>
40 <section> 40 <section>
41 <title>Selection targets</title> 41 <title>Selection targets</title>
42 42
43 <para>
43 <figure id="sel-targets-capture"> 44 <figure id="sel-targets-capture">
44 <title>Cropping and composing targets</title> 45 <title>Cropping and composing targets</title>
45 <mediaobject> 46 <mediaobject>
@@ -52,12 +53,12 @@ cropping and composing rectangles have the same size.</para>
52 </textobject> 53 </textobject>
53 </mediaobject> 54 </mediaobject>
54 </figure> 55 </figure>
56 </para>
55 57
58 <para>See <xref linkend="v4l2-selection-targets" /> for more
59 information.</para>
56 </section> 60 </section>
57 61
58 See <xref linkend="v4l2-selection-targets" /> for more
59 information.
60
61 <section> 62 <section>
62 63
63 <title>Configuration</title> 64 <title>Configuration</title>
@@ -216,18 +217,17 @@ composing and cropping operations by setting the appropriate targets. The V4L2
216API lacks any support for composing to and cropping from an image inside a 217API lacks any support for composing to and cropping from an image inside a
217memory buffer. The application could configure a capture device to fill only a 218memory buffer. The application could configure a capture device to fill only a
218part of an image by abusing V4L2 API. Cropping a smaller image from a larger 219part of an image by abusing V4L2 API. Cropping a smaller image from a larger
219one is achieved by setting the field <structfield> 220one is achieved by setting the field
220&v4l2-pix-format;::bytesperline </structfield>. Introducing an image offsets 221&v4l2-pix-format;<structfield>::bytesperline</structfield>. Introducing an image offsets
221could be done by modifying field <structfield> &v4l2-buffer;::m:userptr 222could be done by modifying field &v4l2-buffer;<structfield>::m_userptr</structfield>
222</structfield> before calling <constant> VIDIOC_QBUF </constant>. Those 223before calling <constant> VIDIOC_QBUF </constant>. Those
223operations should be avoided because they are not portable (endianness), and do 224operations should be avoided because they are not portable (endianness), and do
224not work for macroblock and Bayer formats and mmap buffers. The selection API 225not work for macroblock and Bayer formats and mmap buffers. The selection API
225deals with configuration of buffer cropping/composing in a clear, intuitive and 226deals with configuration of buffer cropping/composing in a clear, intuitive and
226portable way. Next, with the selection API the concepts of the padded target 227portable way. Next, with the selection API the concepts of the padded target
227and constraints flags are introduced. Finally, <structname> &v4l2-crop; 228and constraints flags are introduced. Finally, &v4l2-crop; and &v4l2-cropcap;
228</structname> and <structname> &v4l2-cropcap; </structname> have no reserved 229have no reserved fields. Therefore there is no way to extend their functionality.
229fields. Therefore there is no way to extend their functionality. The new 230The new &v4l2-selection; provides a lot of place for future
230<structname> &v4l2-selection; </structname> provides a lot of place for future
231extensions. Driver developers are encouraged to implement only selection API. 231extensions. Driver developers are encouraged to implement only selection API.
232The former cropping API would be simulated using the new one. </para> 232The former cropping API would be simulated using the new one. </para>
233 233
diff --git a/Documentation/DocBook/media/v4l/subdev-formats.xml b/Documentation/DocBook/media/v4l/subdev-formats.xml
index 49c532ebbbbe..a0a936455fae 100644
--- a/Documentation/DocBook/media/v4l/subdev-formats.xml
+++ b/Documentation/DocBook/media/v4l/subdev-formats.xml
@@ -2565,5 +2565,49 @@
2565 </tgroup> 2565 </tgroup>
2566 </table> 2566 </table>
2567 </section> 2567 </section>
2568
2569 <section id="v4l2-mbus-vendor-spec-fmts">
2570 <title>Vendor and Device Specific Formats</title>
2571
2572 <note>
2573 <title>Experimental</title>
2574 <para>This is an <link linkend="experimental">experimental</link>
2575interface and may change in the future.</para>
2576 </note>
2577
2578 <para>This section lists complex data formats that are either vendor or
2579 device specific.
2580 </para>
2581
2582 <para>The following table lists the existing vendor and device specific
2583 formats.</para>
2584
2585 <table pgwide="0" frame="none" id="v4l2-mbus-pixelcode-vendor-specific">
2586 <title>Vendor and device specific formats</title>
2587 <tgroup cols="3">
2588 <colspec colname="id" align="left" />
2589 <colspec colname="code" align="left"/>
2590 <colspec colname="remarks" align="left"/>
2591 <thead>
2592 <row>
2593 <entry>Identifier</entry>
2594 <entry>Code</entry>
2595 <entry>Comments</entry>
2596 </row>
2597 </thead>
2598 <tbody valign="top">
2599 <row id="V4L2-MBUS-FMT-S5C-UYVY-JPEG-1X8">
2600 <entry>V4L2_MBUS_FMT_S5C_UYVY_JPEG_1X8</entry>
2601 <entry>0x5001</entry>
2602 <entry>
2603 Interleaved raw UYVY and JPEG image format with embedded
2604 meta-data used by Samsung S3C73MX camera sensors.
2605 </entry>
2606 </row>
2607 </tbody>
2608 </tgroup>
2609 </table>
2610 </section>
2611
2568 </section> 2612 </section>
2569</section> 2613</section>
diff --git a/Documentation/DocBook/media/v4l/v4l2.xml b/Documentation/DocBook/media/v4l/v4l2.xml
index eee6908c749f..10ccde9d16d0 100644
--- a/Documentation/DocBook/media/v4l/v4l2.xml
+++ b/Documentation/DocBook/media/v4l/v4l2.xml
@@ -145,9 +145,12 @@ applications. -->
145 <authorinitials>hv</authorinitials> 145 <authorinitials>hv</authorinitials>
146 <revremark>Added VIDIOC_ENUM_FREQ_BANDS. 146 <revremark>Added VIDIOC_ENUM_FREQ_BANDS.
147 </revremark> 147 </revremark>
148 </revision>
149
150 <revision>
148 <revnumber>3.5</revnumber> 151 <revnumber>3.5</revnumber>
149 <date>2012-05-07</date> 152 <date>2012-05-07</date>
150 <authorinitials>sa, sn</authorinitials> 153 <authorinitials>sa, sn, hv</authorinitials>
151 <revremark>Added V4L2_CTRL_TYPE_INTEGER_MENU and V4L2 subdev 154 <revremark>Added V4L2_CTRL_TYPE_INTEGER_MENU and V4L2 subdev
152 selections API. Improved the description of V4L2_CID_COLORFX 155 selections API. Improved the description of V4L2_CID_COLORFX
153 control, added V4L2_CID_COLORFX_CBCR control. 156 control, added V4L2_CID_COLORFX_CBCR control.
@@ -158,11 +161,8 @@ applications. -->
158 V4L2_CID_3A_LOCK, V4L2_CID_AUTO_FOCUS_START, 161 V4L2_CID_3A_LOCK, V4L2_CID_AUTO_FOCUS_START,
159 V4L2_CID_AUTO_FOCUS_STOP, V4L2_CID_AUTO_FOCUS_STATUS 162 V4L2_CID_AUTO_FOCUS_STOP, V4L2_CID_AUTO_FOCUS_STATUS
160 and V4L2_CID_AUTO_FOCUS_RANGE. 163 and V4L2_CID_AUTO_FOCUS_RANGE.
161 </revremark> 164 Added VIDIOC_ENUM_DV_TIMINGS, VIDIOC_QUERY_DV_TIMINGS and
162 <date>2012-05-01</date> 165 VIDIOC_DV_TIMINGS_CAP.
163 <authorinitials>hv</authorinitials>
164 <revremark>Added VIDIOC_ENUM_DV_TIMINGS, VIDIOC_QUERY_DV_TIMINGS and
165 VIDIOC_DV_TIMINGS_CAP.
166 </revremark> 166 </revremark>
167 </revision> 167 </revision>
168 168
@@ -472,7 +472,7 @@ and discussions on the V4L mailing list.</revremark>
472</partinfo> 472</partinfo>
473 473
474<title>Video for Linux Two API Specification</title> 474<title>Video for Linux Two API Specification</title>
475 <subtitle>Revision 3.5</subtitle> 475 <subtitle>Revision 3.6</subtitle>
476 476
477 <chapter id="common"> 477 <chapter id="common">
478 &sub-common; 478 &sub-common;
@@ -581,6 +581,7 @@ and discussions on the V4L mailing list.</revremark>
581 &sub-subdev-enum-frame-size; 581 &sub-subdev-enum-frame-size;
582 &sub-subdev-enum-mbus-code; 582 &sub-subdev-enum-mbus-code;
583 &sub-subdev-g-crop; 583 &sub-subdev-g-crop;
584 &sub-subdev-g-edid;
584 &sub-subdev-g-fmt; 585 &sub-subdev-g-fmt;
585 &sub-subdev-g-frame-interval; 586 &sub-subdev-g-frame-interval;
586 &sub-subdev-g-selection; 587 &sub-subdev-g-selection;
diff --git a/Documentation/DocBook/media/v4l/vidioc-cropcap.xml b/Documentation/DocBook/media/v4l/vidioc-cropcap.xml
index f1bac2c6e978..bf7cc979fdfa 100644
--- a/Documentation/DocBook/media/v4l/vidioc-cropcap.xml
+++ b/Documentation/DocBook/media/v4l/vidioc-cropcap.xml
@@ -59,6 +59,9 @@ constant except when switching the video standard. Remember this
59switch can occur implicit when switching the video input or 59switch can occur implicit when switching the video input or
60output.</para> 60output.</para>
61 61
62 <para>This ioctl must be implemented for video capture or output devices that
63support cropping and/or scaling and/or have non-square pixels, and for overlay devices.</para>
64
62 <table pgwide="1" frame="none" id="v4l2-cropcap"> 65 <table pgwide="1" frame="none" id="v4l2-cropcap">
63 <title>struct <structname>v4l2_cropcap</structname></title> 66 <title>struct <structname>v4l2_cropcap</structname></title>
64 <tgroup cols="3"> 67 <tgroup cols="3">
@@ -70,10 +73,10 @@ output.</para>
70 <entry>Type of the data stream, set by the application. 73 <entry>Type of the data stream, set by the application.
71Only these types are valid here: 74Only these types are valid here:
72<constant>V4L2_BUF_TYPE_VIDEO_CAPTURE</constant>, 75<constant>V4L2_BUF_TYPE_VIDEO_CAPTURE</constant>,
76<constant>V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE</constant>,
73<constant>V4L2_BUF_TYPE_VIDEO_OUTPUT</constant>, 77<constant>V4L2_BUF_TYPE_VIDEO_OUTPUT</constant>,
74<constant>V4L2_BUF_TYPE_VIDEO_OVERLAY</constant>, and custom (driver 78<constant>V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE</constant> and
75defined) types with code <constant>V4L2_BUF_TYPE_PRIVATE</constant> 79<constant>V4L2_BUF_TYPE_VIDEO_OVERLAY</constant>. See <xref linkend="v4l2-buf-type" />.</entry>
76and higher. See <xref linkend="v4l2-buf-type" />.</entry>
77 </row> 80 </row>
78 <row> 81 <row>
79 <entry>struct <link linkend="v4l2-rect-crop">v4l2_rect</link></entry> 82 <entry>struct <link linkend="v4l2-rect-crop">v4l2_rect</link></entry>
@@ -156,8 +159,7 @@ on 22 Oct 2002 subject "Re:[V4L][patches!] Re:v4l2/kernel-2.5" -->
156 <term><errorcode>EINVAL</errorcode></term> 159 <term><errorcode>EINVAL</errorcode></term>
157 <listitem> 160 <listitem>
158 <para>The &v4l2-cropcap; <structfield>type</structfield> is 161 <para>The &v4l2-cropcap; <structfield>type</structfield> is
159invalid. This is not permitted for video capture, output and overlay devices, 162invalid.</para>
160which must support <constant>VIDIOC_CROPCAP</constant>.</para>
161 </listitem> 163 </listitem>
162 </varlistentry> 164 </varlistentry>
163 </variablelist> 165 </variablelist>
diff --git a/Documentation/DocBook/media/v4l/vidioc-decoder-cmd.xml b/Documentation/DocBook/media/v4l/vidioc-decoder-cmd.xml
index 74b87f6e480a..9215627b04c7 100644
--- a/Documentation/DocBook/media/v4l/vidioc-decoder-cmd.xml
+++ b/Documentation/DocBook/media/v4l/vidioc-decoder-cmd.xml
@@ -49,13 +49,6 @@
49 <refsect1> 49 <refsect1>
50 <title>Description</title> 50 <title>Description</title>
51 51
52 <note>
53 <title>Experimental</title>
54
55 <para>This is an <link linkend="experimental">experimental</link>
56interface and may change in the future.</para>
57 </note>
58
59 <para>These ioctls control an audio/video (usually MPEG-) decoder. 52 <para>These ioctls control an audio/video (usually MPEG-) decoder.
60<constant>VIDIOC_DECODER_CMD</constant> sends a command to the 53<constant>VIDIOC_DECODER_CMD</constant> sends a command to the
61decoder, <constant>VIDIOC_TRY_DECODER_CMD</constant> can be used to 54decoder, <constant>VIDIOC_TRY_DECODER_CMD</constant> can be used to
diff --git a/Documentation/DocBook/media/v4l/vidioc-encoder-cmd.xml b/Documentation/DocBook/media/v4l/vidioc-encoder-cmd.xml
index f431b3ba79bd..0619ca5d2d36 100644
--- a/Documentation/DocBook/media/v4l/vidioc-encoder-cmd.xml
+++ b/Documentation/DocBook/media/v4l/vidioc-encoder-cmd.xml
@@ -49,13 +49,6 @@
49 <refsect1> 49 <refsect1>
50 <title>Description</title> 50 <title>Description</title>
51 51
52 <note>
53 <title>Experimental</title>
54
55 <para>This is an <link linkend="experimental">experimental</link>
56interface and may change in the future.</para>
57 </note>
58
59 <para>These ioctls control an audio/video (usually MPEG-) encoder. 52 <para>These ioctls control an audio/video (usually MPEG-) encoder.
60<constant>VIDIOC_ENCODER_CMD</constant> sends a command to the 53<constant>VIDIOC_ENCODER_CMD</constant> sends a command to the
61encoder, <constant>VIDIOC_TRY_ENCODER_CMD</constant> can be used to 54encoder, <constant>VIDIOC_TRY_ENCODER_CMD</constant> can be used to
diff --git a/Documentation/DocBook/media/v4l/vidioc-enum-dv-presets.xml b/Documentation/DocBook/media/v4l/vidioc-enum-dv-presets.xml
index 509f0012d2a6..fced5fb0dbf0 100644
--- a/Documentation/DocBook/media/v4l/vidioc-enum-dv-presets.xml
+++ b/Documentation/DocBook/media/v4l/vidioc-enum-dv-presets.xml
@@ -229,6 +229,12 @@ intended for the user.</entry>
229is out of bounds.</para> 229is out of bounds.</para>
230 </listitem> 230 </listitem>
231 </varlistentry> 231 </varlistentry>
232 <varlistentry>
233 <term><errorcode>ENODATA</errorcode></term>
234 <listitem>
235 <para>Digital video presets are not supported for this input or output.</para>
236 </listitem>
237 </varlistentry>
232 </variablelist> 238 </variablelist>
233 </refsect1> 239 </refsect1>
234</refentry> 240</refentry>
diff --git a/Documentation/DocBook/media/v4l/vidioc-enum-dv-timings.xml b/Documentation/DocBook/media/v4l/vidioc-enum-dv-timings.xml
index 24c3bf4fd29a..b3e17c1dfaf5 100644
--- a/Documentation/DocBook/media/v4l/vidioc-enum-dv-timings.xml
+++ b/Documentation/DocBook/media/v4l/vidioc-enum-dv-timings.xml
@@ -106,6 +106,12 @@ application.</entry>
106is out of bounds.</para> 106is out of bounds.</para>
107 </listitem> 107 </listitem>
108 </varlistentry> 108 </varlistentry>
109 <varlistentry>
110 <term><errorcode>ENODATA</errorcode></term>
111 <listitem>
112 <para>Digital video presets are not supported for this input or output.</para>
113 </listitem>
114 </varlistentry>
109 </variablelist> 115 </variablelist>
110 </refsect1> 116 </refsect1>
111</refentry> 117</refentry>
diff --git a/Documentation/DocBook/media/v4l/vidioc-enum-fmt.xml b/Documentation/DocBook/media/v4l/vidioc-enum-fmt.xml
index 81ebe48317fe..f8dfeed34fca 100644
--- a/Documentation/DocBook/media/v4l/vidioc-enum-fmt.xml
+++ b/Documentation/DocBook/media/v4l/vidioc-enum-fmt.xml
@@ -58,6 +58,9 @@ structure. Drivers fill the rest of the structure or return an
58incrementing by one until <errorcode>EINVAL</errorcode> is 58incrementing by one until <errorcode>EINVAL</errorcode> is
59returned.</para> 59returned.</para>
60 60
61 <para>Note that after switching input or output the list of enumerated image
62formats may be different.</para>
63
61 <table pgwide="1" frame="none" id="v4l2-fmtdesc"> 64 <table pgwide="1" frame="none" id="v4l2-fmtdesc">
62 <title>struct <structname>v4l2_fmtdesc</structname></title> 65 <title>struct <structname>v4l2_fmtdesc</structname></title>
63 <tgroup cols="3"> 66 <tgroup cols="3">
@@ -78,10 +81,8 @@ Only these types are valid here:
78<constant>V4L2_BUF_TYPE_VIDEO_CAPTURE</constant>, 81<constant>V4L2_BUF_TYPE_VIDEO_CAPTURE</constant>,
79<constant>V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE</constant>, 82<constant>V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE</constant>,
80<constant>V4L2_BUF_TYPE_VIDEO_OUTPUT</constant>, 83<constant>V4L2_BUF_TYPE_VIDEO_OUTPUT</constant>,
81<constant>V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE</constant>, 84<constant>V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE</constant> and
82<constant>V4L2_BUF_TYPE_VIDEO_OVERLAY</constant>, and custom (driver 85<constant>V4L2_BUF_TYPE_VIDEO_OVERLAY</constant>. See <xref linkend="v4l2-buf-type" />.</entry>
83defined) types with code <constant>V4L2_BUF_TYPE_PRIVATE</constant>
84and higher. See <xref linkend="v4l2-buf-type" />.</entry>
85 </row> 86 </row>
86 <row> 87 <row>
87 <entry>__u32</entry> 88 <entry>__u32</entry>
diff --git a/Documentation/DocBook/media/v4l/vidioc-enum-framesizes.xml b/Documentation/DocBook/media/v4l/vidioc-enum-framesizes.xml
index f77a13f486d7..a78454b5abcd 100644
--- a/Documentation/DocBook/media/v4l/vidioc-enum-framesizes.xml
+++ b/Documentation/DocBook/media/v4l/vidioc-enum-framesizes.xml
@@ -50,13 +50,6 @@ and pixel format and receives a frame width and height.</para>
50 <refsect1> 50 <refsect1>
51 <title>Description</title> 51 <title>Description</title>
52 52
53 <note>
54 <title>Experimental</title>
55
56 <para>This is an <link linkend="experimental">experimental</link>
57interface and may change in the future.</para>
58 </note>
59
60 <para>This ioctl allows applications to enumerate all frame sizes 53 <para>This ioctl allows applications to enumerate all frame sizes
61(&ie; width and height in pixels) that the device supports for the 54(&ie; width and height in pixels) that the device supports for the
62given pixel format.</para> 55given pixel format.</para>
diff --git a/Documentation/DocBook/media/v4l/vidioc-enuminput.xml b/Documentation/DocBook/media/v4l/vidioc-enuminput.xml
index 46d5a044a537..3c9a81305ad4 100644
--- a/Documentation/DocBook/media/v4l/vidioc-enuminput.xml
+++ b/Documentation/DocBook/media/v4l/vidioc-enuminput.xml
@@ -283,7 +283,7 @@ input/output interface to linux-media@vger.kernel.org on 19 Oct 2009.
283 <entry>This input supports setting DV presets by using VIDIOC_S_DV_PRESET.</entry> 283 <entry>This input supports setting DV presets by using VIDIOC_S_DV_PRESET.</entry>
284 </row> 284 </row>
285 <row> 285 <row>
286 <entry><constant>V4L2_IN_CAP_CUSTOM_TIMINGS</constant></entry> 286 <entry><constant>V4L2_IN_CAP_DV_TIMINGS</constant></entry>
287 <entry>0x00000002</entry> 287 <entry>0x00000002</entry>
288 <entry>This input supports setting video timings by using VIDIOC_S_DV_TIMINGS.</entry> 288 <entry>This input supports setting video timings by using VIDIOC_S_DV_TIMINGS.</entry>
289 </row> 289 </row>
diff --git a/Documentation/DocBook/media/v4l/vidioc-enumoutput.xml b/Documentation/DocBook/media/v4l/vidioc-enumoutput.xml
index 428020000ef0..f4ab0798545d 100644
--- a/Documentation/DocBook/media/v4l/vidioc-enumoutput.xml
+++ b/Documentation/DocBook/media/v4l/vidioc-enumoutput.xml
@@ -168,7 +168,7 @@ input/output interface to linux-media@vger.kernel.org on 19 Oct 2009.
168 <entry>This output supports setting DV presets by using VIDIOC_S_DV_PRESET.</entry> 168 <entry>This output supports setting DV presets by using VIDIOC_S_DV_PRESET.</entry>
169 </row> 169 </row>
170 <row> 170 <row>
171 <entry><constant>V4L2_OUT_CAP_CUSTOM_TIMINGS</constant></entry> 171 <entry><constant>V4L2_OUT_CAP_DV_TIMINGS</constant></entry>
172 <entry>0x00000002</entry> 172 <entry>0x00000002</entry>
173 <entry>This output supports setting video timings by using VIDIOC_S_DV_TIMINGS.</entry> 173 <entry>This output supports setting video timings by using VIDIOC_S_DV_TIMINGS.</entry>
174 </row> 174 </row>
diff --git a/Documentation/DocBook/media/v4l/vidioc-enumstd.xml b/Documentation/DocBook/media/v4l/vidioc-enumstd.xml
index 3a5fc5405f96..8065099401d1 100644
--- a/Documentation/DocBook/media/v4l/vidioc-enumstd.xml
+++ b/Documentation/DocBook/media/v4l/vidioc-enumstd.xml
@@ -378,6 +378,12 @@ system)</para></footnote></para></entry>
378is out of bounds.</para> 378is out of bounds.</para>
379 </listitem> 379 </listitem>
380 </varlistentry> 380 </varlistentry>
381 <varlistentry>
382 <term><errorcode>ENODATA</errorcode></term>
383 <listitem>
384 <para>Standard video timings are not supported for this input or output.</para>
385 </listitem>
386 </varlistentry>
381 </variablelist> 387 </variablelist>
382 </refsect1> 388 </refsect1>
383</refentry> 389</refentry>
diff --git a/Documentation/DocBook/media/v4l/vidioc-g-crop.xml b/Documentation/DocBook/media/v4l/vidioc-g-crop.xml
index c4ff3b1887fb..75c6a93de3c1 100644
--- a/Documentation/DocBook/media/v4l/vidioc-g-crop.xml
+++ b/Documentation/DocBook/media/v4l/vidioc-g-crop.xml
@@ -104,10 +104,8 @@ changed and <constant>VIDIOC_S_CROP</constant> returns the
104 <entry><structfield>type</structfield></entry> 104 <entry><structfield>type</structfield></entry>
105 <entry>Type of the data stream, set by the application. 105 <entry>Type of the data stream, set by the application.
106Only these types are valid here: <constant>V4L2_BUF_TYPE_VIDEO_CAPTURE</constant>, 106Only these types are valid here: <constant>V4L2_BUF_TYPE_VIDEO_CAPTURE</constant>,
107<constant>V4L2_BUF_TYPE_VIDEO_OUTPUT</constant>, 107<constant>V4L2_BUF_TYPE_VIDEO_OUTPUT</constant> and
108<constant>V4L2_BUF_TYPE_VIDEO_OVERLAY</constant>, and custom (driver 108<constant>V4L2_BUF_TYPE_VIDEO_OVERLAY</constant>. See <xref linkend="v4l2-buf-type" />.</entry>
109defined) types with code <constant>V4L2_BUF_TYPE_PRIVATE</constant>
110and higher. See <xref linkend="v4l2-buf-type" />.</entry>
111 </row> 109 </row>
112 <row> 110 <row>
113 <entry>&v4l2-rect;</entry> 111 <entry>&v4l2-rect;</entry>
diff --git a/Documentation/DocBook/media/v4l/vidioc-g-dv-preset.xml b/Documentation/DocBook/media/v4l/vidioc-g-dv-preset.xml
index 61be9fa3803a..b9ea37634f6c 100644
--- a/Documentation/DocBook/media/v4l/vidioc-g-dv-preset.xml
+++ b/Documentation/DocBook/media/v4l/vidioc-g-dv-preset.xml
@@ -78,6 +78,12 @@ If the preset is not supported, it returns an &EINVAL; </para>
78 </listitem> 78 </listitem>
79 </varlistentry> 79 </varlistentry>
80 <varlistentry> 80 <varlistentry>
81 <term><errorcode>ENODATA</errorcode></term>
82 <listitem>
83 <para>Digital video presets are not supported for this input or output.</para>
84 </listitem>
85 </varlistentry>
86 <varlistentry>
81 <term><errorcode>EBUSY</errorcode></term> 87 <term><errorcode>EBUSY</errorcode></term>
82 <listitem> 88 <listitem>
83 <para>The device is busy and therefore can not change the preset.</para> 89 <para>The device is busy and therefore can not change the preset.</para>
@@ -104,7 +110,4 @@ If the preset is not supported, it returns an &EINVAL; </para>
104 </tgroup> 110 </tgroup>
105 </table> 111 </table>
106 </refsect1> 112 </refsect1>
107 <refsect1>
108 &return-value;
109 </refsect1>
110</refentry> 113</refentry>
diff --git a/Documentation/DocBook/media/v4l/vidioc-g-dv-timings.xml b/Documentation/DocBook/media/v4l/vidioc-g-dv-timings.xml
index eda1a2991bbe..72369707bd77 100644
--- a/Documentation/DocBook/media/v4l/vidioc-g-dv-timings.xml
+++ b/Documentation/DocBook/media/v4l/vidioc-g-dv-timings.xml
@@ -56,7 +56,9 @@ a pointer to the &v4l2-dv-timings; structure as argument. If the ioctl is not su
56or the timing values are not correct, the driver returns &EINVAL;.</para> 56or the timing values are not correct, the driver returns &EINVAL;.</para>
57<para>The <filename>linux/v4l2-dv-timings.h</filename> header can be used to get the 57<para>The <filename>linux/v4l2-dv-timings.h</filename> header can be used to get the
58timings of the formats in the <xref linkend="cea861" /> and <xref linkend="vesadmt" /> 58timings of the formats in the <xref linkend="cea861" /> and <xref linkend="vesadmt" />
59standards.</para> 59standards. If the current input or output does not support DV timings (e.g. if
60&VIDIOC-ENUMINPUT; does not set the <constant>V4L2_IN_CAP_DV_TIMINGS</constant> flag), then
61&ENODATA; is returned.</para>
60 </refsect1> 62 </refsect1>
61 63
62 <refsect1> 64 <refsect1>
@@ -71,6 +73,12 @@ standards.</para>
71 </listitem> 73 </listitem>
72 </varlistentry> 74 </varlistentry>
73 <varlistentry> 75 <varlistentry>
76 <term><errorcode>ENODATA</errorcode></term>
77 <listitem>
78 <para>Digital video timings are not supported for this input or output.</para>
79 </listitem>
80 </varlistentry>
81 <varlistentry>
74 <term><errorcode>EBUSY</errorcode></term> 82 <term><errorcode>EBUSY</errorcode></term>
75 <listitem> 83 <listitem>
76 <para>The device is busy and therefore can not change the timings.</para> 84 <para>The device is busy and therefore can not change the timings.</para>
@@ -320,7 +328,4 @@ detected or used depends on the hardware.
320 </tgroup> 328 </tgroup>
321 </table> 329 </table>
322 </refsect1> 330 </refsect1>
323 <refsect1>
324 &return-value;
325 </refsect1>
326</refentry> 331</refentry>
diff --git a/Documentation/DocBook/media/v4l/vidioc-g-enc-index.xml b/Documentation/DocBook/media/v4l/vidioc-g-enc-index.xml
index 2aef02c9044e..be25029a16f1 100644
--- a/Documentation/DocBook/media/v4l/vidioc-g-enc-index.xml
+++ b/Documentation/DocBook/media/v4l/vidioc-g-enc-index.xml
@@ -48,13 +48,6 @@
48 <refsect1> 48 <refsect1>
49 <title>Description</title> 49 <title>Description</title>
50 50
51 <note>
52 <title>Experimental</title>
53
54 <para>This is an <link linkend="experimental">experimental</link>
55interface and may change in the future.</para>
56 </note>
57
58 <para>The <constant>VIDIOC_G_ENC_INDEX</constant> ioctl provides 51 <para>The <constant>VIDIOC_G_ENC_INDEX</constant> ioctl provides
59meta data about a compressed video stream the same or another 52meta data about a compressed video stream the same or another
60application currently reads from the driver, which is useful for 53application currently reads from the driver, which is useful for
diff --git a/Documentation/DocBook/media/v4l/vidioc-g-fmt.xml b/Documentation/DocBook/media/v4l/vidioc-g-fmt.xml
index 52acff193a6f..ee8f56e1bac0 100644
--- a/Documentation/DocBook/media/v4l/vidioc-g-fmt.xml
+++ b/Documentation/DocBook/media/v4l/vidioc-g-fmt.xml
@@ -81,7 +81,7 @@ the application calls the <constant>VIDIOC_S_FMT</constant> ioctl
81with a pointer to a <structname>v4l2_format</structname> structure 81with a pointer to a <structname>v4l2_format</structname> structure
82the driver checks 82the driver checks
83and adjusts the parameters against hardware abilities. Drivers 83and adjusts the parameters against hardware abilities. Drivers
84should not return an error code unless the input is ambiguous, this is 84should not return an error code unless the <structfield>type</structfield> field is invalid, this is
85a mechanism to fathom device capabilities and to approach parameters 85a mechanism to fathom device capabilities and to approach parameters
86acceptable for both the application and driver. On success the driver 86acceptable for both the application and driver. On success the driver
87may program the hardware, allocate resources and generally prepare for 87may program the hardware, allocate resources and generally prepare for
@@ -107,6 +107,10 @@ disabling I/O or possibly time consuming hardware preparations.
107Although strongly recommended drivers are not required to implement 107Although strongly recommended drivers are not required to implement
108this ioctl.</para> 108this ioctl.</para>
109 109
110 <para>The format as returned by <constant>VIDIOC_TRY_FMT</constant>
111must be identical to what <constant>VIDIOC_S_FMT</constant> returns for
112the same input or output.</para>
113
110 <table pgwide="1" frame="none" id="v4l2-format"> 114 <table pgwide="1" frame="none" id="v4l2-format">
111 <title>struct <structname>v4l2_format</structname></title> 115 <title>struct <structname>v4l2_format</structname></title>
112 <tgroup cols="4"> 116 <tgroup cols="4">
@@ -170,9 +174,7 @@ capture and output devices.</entry>
170 <entry></entry> 174 <entry></entry>
171 <entry>__u8</entry> 175 <entry>__u8</entry>
172 <entry><structfield>raw_data</structfield>[200]</entry> 176 <entry><structfield>raw_data</structfield>[200]</entry>
173 <entry>Place holder for future extensions and custom 177 <entry>Place holder for future extensions.</entry>
174(driver defined) formats with <structfield>type</structfield>
175<constant>V4L2_BUF_TYPE_PRIVATE</constant> and higher.</entry>
176 </row> 178 </row>
177 </tbody> 179 </tbody>
178 </tgroup> 180 </tgroup>
@@ -187,8 +189,7 @@ capture and output devices.</entry>
187 <term><errorcode>EINVAL</errorcode></term> 189 <term><errorcode>EINVAL</errorcode></term>
188 <listitem> 190 <listitem>
189 <para>The &v4l2-format; <structfield>type</structfield> 191 <para>The &v4l2-format; <structfield>type</structfield>
190field is invalid, the requested buffer type not supported, or the 192field is invalid or the requested buffer type not supported.</para>
191format is not supported with this buffer type.</para>
192 </listitem> 193 </listitem>
193 </varlistentry> 194 </varlistentry>
194 </variablelist> 195 </variablelist>
diff --git a/Documentation/DocBook/media/v4l/vidioc-g-parm.xml b/Documentation/DocBook/media/v4l/vidioc-g-parm.xml
index f83d2cdd1185..9058224d1bbf 100644
--- a/Documentation/DocBook/media/v4l/vidioc-g-parm.xml
+++ b/Documentation/DocBook/media/v4l/vidioc-g-parm.xml
@@ -108,9 +108,7 @@ devices.</para>
108 <entry></entry> 108 <entry></entry>
109 <entry>__u8</entry> 109 <entry>__u8</entry>
110 <entry><structfield>raw_data</structfield>[200]</entry> 110 <entry><structfield>raw_data</structfield>[200]</entry>
111 <entry>A place holder for future extensions and custom 111 <entry>A place holder for future extensions.</entry>
112(driver defined) buffer types <constant>V4L2_BUF_TYPE_PRIVATE</constant> and
113higher.</entry>
114 </row> 112 </row>
115 </tbody> 113 </tbody>
116 </tgroup> 114 </tgroup>
diff --git a/Documentation/DocBook/media/v4l/vidioc-g-selection.xml b/Documentation/DocBook/media/v4l/vidioc-g-selection.xml
index f76d8a6d9b92..b11ec75e21a1 100644
--- a/Documentation/DocBook/media/v4l/vidioc-g-selection.xml
+++ b/Documentation/DocBook/media/v4l/vidioc-g-selection.xml
@@ -152,12 +152,10 @@ satisfactory parameters have been negotiated. If constraints flags have to be
152violated at then ERANGE is returned. The error indicates that <emphasis> there 152violated at then ERANGE is returned. The error indicates that <emphasis> there
153exist no rectangle </emphasis> that satisfies the constraints.</para> 153exist no rectangle </emphasis> that satisfies the constraints.</para>
154 154
155 </refsect1>
156
157 <para>Selection targets and flags are documented in <xref 155 <para>Selection targets and flags are documented in <xref
158 linkend="v4l2-selections-common"/>.</para> 156 linkend="v4l2-selections-common"/>.</para>
159 157
160 <section> 158 <para>
161 <figure id="sel-const-adjust"> 159 <figure id="sel-const-adjust">
162 <title>Size adjustments with constraint flags.</title> 160 <title>Size adjustments with constraint flags.</title>
163 <mediaobject> 161 <mediaobject>
@@ -170,9 +168,9 @@ exist no rectangle </emphasis> that satisfies the constraints.</para>
170 </textobject> 168 </textobject>
171 </mediaobject> 169 </mediaobject>
172 </figure> 170 </figure>
173 </section> 171 </para>
174 172
175 <refsect1> 173 <para>
176 <table pgwide="1" frame="none" id="v4l2-selection"> 174 <table pgwide="1" frame="none" id="v4l2-selection">
177 <title>struct <structname>v4l2_selection</structname></title> 175 <title>struct <structname>v4l2_selection</structname></title>
178 <tgroup cols="3"> 176 <tgroup cols="3">
@@ -208,6 +206,7 @@ exist no rectangle </emphasis> that satisfies the constraints.</para>
208 </tbody> 206 </tbody>
209 </tgroup> 207 </tgroup>
210 </table> 208 </table>
209 </para>
211 </refsect1> 210 </refsect1>
212 211
213 <refsect1> 212 <refsect1>
diff --git a/Documentation/DocBook/media/v4l/vidioc-g-std.xml b/Documentation/DocBook/media/v4l/vidioc-g-std.xml
index 99ff1a016220..4a898417de28 100644
--- a/Documentation/DocBook/media/v4l/vidioc-g-std.xml
+++ b/Documentation/DocBook/media/v4l/vidioc-g-std.xml
@@ -72,7 +72,9 @@ flags, being a write-only ioctl it does not return the actual new standard as
72the current input does not support the requested standard the driver 72the current input does not support the requested standard the driver
73returns an &EINVAL;. When the standard set is ambiguous drivers may 73returns an &EINVAL;. When the standard set is ambiguous drivers may
74return <errorcode>EINVAL</errorcode> or choose any of the requested 74return <errorcode>EINVAL</errorcode> or choose any of the requested
75standards.</para> 75standards. If the current input or output does not support standard video timings (e.g. if
76&VIDIOC-ENUMINPUT; does not set the <constant>V4L2_IN_CAP_STD</constant> flag), then
77&ENODATA; is returned.</para>
76 </refsect1> 78 </refsect1>
77 79
78 <refsect1> 80 <refsect1>
@@ -85,6 +87,12 @@ standards.</para>
85 <para>The <constant>VIDIOC_S_STD</constant> parameter was unsuitable.</para> 87 <para>The <constant>VIDIOC_S_STD</constant> parameter was unsuitable.</para>
86 </listitem> 88 </listitem>
87 </varlistentry> 89 </varlistentry>
90 <varlistentry>
91 <term><errorcode>ENODATA</errorcode></term>
92 <listitem>
93 <para>Standard video timings are not supported for this input or output.</para>
94 </listitem>
95 </varlistentry>
88 </variablelist> 96 </variablelist>
89 </refsect1> 97 </refsect1>
90</refentry> 98</refentry>
diff --git a/Documentation/DocBook/media/v4l/vidioc-g-tuner.xml b/Documentation/DocBook/media/v4l/vidioc-g-tuner.xml
index 701138f1209d..6cc82010c736 100644
--- a/Documentation/DocBook/media/v4l/vidioc-g-tuner.xml
+++ b/Documentation/DocBook/media/v4l/vidioc-g-tuner.xml
@@ -354,6 +354,12 @@ radio tuners.</entry>
354 <entry>The &VIDIOC-ENUM-FREQ-BANDS; ioctl can be used to enumerate 354 <entry>The &VIDIOC-ENUM-FREQ-BANDS; ioctl can be used to enumerate
355 the available frequency bands.</entry> 355 the available frequency bands.</entry>
356 </row> 356 </row>
357 <row>
358 <entry><constant>V4L2_TUNER_CAP_HWSEEK_PROG_LIM</constant></entry>
359 <entry>0x0800</entry>
360 <entry>The range to search when using the hardware seek functionality
361 is programmable, see &VIDIOC-S-HW-FREQ-SEEK; for details.</entry>
362 </row>
357 </tbody> 363 </tbody>
358 </tgroup> 364 </tgroup>
359 </table> 365 </table>
diff --git a/Documentation/DocBook/media/v4l/vidioc-qbuf.xml b/Documentation/DocBook/media/v4l/vidioc-qbuf.xml
index 77ff5be0809d..2d37abefce13 100644
--- a/Documentation/DocBook/media/v4l/vidioc-qbuf.xml
+++ b/Documentation/DocBook/media/v4l/vidioc-qbuf.xml
@@ -121,8 +121,7 @@ remaining fields or returns an error code. The driver may also set
121field. It indicates a non-critical (recoverable) streaming error. In such case 121field. It indicates a non-critical (recoverable) streaming error. In such case
122the application may continue as normal, but should be aware that data in the 122the application may continue as normal, but should be aware that data in the
123dequeued buffer might be corrupted. When using the multi-planar API, the 123dequeued buffer might be corrupted. When using the multi-planar API, the
124planes array does not have to be passed; the <structfield>m.planes</structfield> 124planes array must be passed in as well.</para>
125member must be set to NULL in that case.</para>
126 125
127 <para>By default <constant>VIDIOC_DQBUF</constant> blocks when no 126 <para>By default <constant>VIDIOC_DQBUF</constant> blocks when no
128buffer is in the outgoing queue. When the 127buffer is in the outgoing queue. When the
@@ -155,6 +154,8 @@ or no buffers have been allocated yet, or the
155<structfield>userptr</structfield> or 154<structfield>userptr</structfield> or
156<structfield>length</structfield> are invalid.</para> 155<structfield>length</structfield> are invalid.</para>
157 </listitem> 156 </listitem>
157 </varlistentry>
158 <varlistentry>
158 <term><errorcode>EIO</errorcode></term> 159 <term><errorcode>EIO</errorcode></term>
159 <listitem> 160 <listitem>
160 <para><constant>VIDIOC_DQBUF</constant> failed due to an 161 <para><constant>VIDIOC_DQBUF</constant> failed due to an
diff --git a/Documentation/DocBook/media/v4l/vidioc-query-dv-preset.xml b/Documentation/DocBook/media/v4l/vidioc-query-dv-preset.xml
index 1bc8aeb3ff1f..68b49d09e245 100644
--- a/Documentation/DocBook/media/v4l/vidioc-query-dv-preset.xml
+++ b/Documentation/DocBook/media/v4l/vidioc-query-dv-preset.xml
@@ -65,5 +65,14 @@ returned.</para>
65 65
66 <refsect1> 66 <refsect1>
67 &return-value; 67 &return-value;
68
69 <variablelist>
70 <varlistentry>
71 <term><errorcode>ENODATA</errorcode></term>
72 <listitem>
73 <para>Digital video presets are not supported for this input or output.</para>
74 </listitem>
75 </varlistentry>
76 </variablelist>
68 </refsect1> 77 </refsect1>
69</refentry> 78</refentry>
diff --git a/Documentation/DocBook/media/v4l/vidioc-query-dv-timings.xml b/Documentation/DocBook/media/v4l/vidioc-query-dv-timings.xml
index 44935a0ffcf0..e185f149e0a1 100644
--- a/Documentation/DocBook/media/v4l/vidioc-query-dv-timings.xml
+++ b/Documentation/DocBook/media/v4l/vidioc-query-dv-timings.xml
@@ -78,6 +78,12 @@ capabilities in order to give more precise feedback to the user.
78 78
79 <variablelist> 79 <variablelist>
80 <varlistentry> 80 <varlistentry>
81 <term><errorcode>ENODATA</errorcode></term>
82 <listitem>
83 <para>Digital video timings are not supported for this input or output.</para>
84 </listitem>
85 </varlistentry>
86 <varlistentry>
81 <term><errorcode>ENOLINK</errorcode></term> 87 <term><errorcode>ENOLINK</errorcode></term>
82 <listitem> 88 <listitem>
83 <para>No timings could be detected because no signal was found. 89 <para>No timings could be detected because no signal was found.
diff --git a/Documentation/DocBook/media/v4l/vidioc-querybuf.xml b/Documentation/DocBook/media/v4l/vidioc-querybuf.xml
index 6e414d7b6df7..a597155c052d 100644
--- a/Documentation/DocBook/media/v4l/vidioc-querybuf.xml
+++ b/Documentation/DocBook/media/v4l/vidioc-querybuf.xml
@@ -48,8 +48,8 @@
48 <refsect1> 48 <refsect1>
49 <title>Description</title> 49 <title>Description</title>
50 50
51 <para>This ioctl is part of the <link linkend="mmap">memory 51 <para>This ioctl is part of the <link linkend="mmap">streaming
52mapping</link> I/O method. It can be used to query the status of a 52</link> I/O method. It can be used to query the status of a
53buffer at any time after buffers have been allocated with the 53buffer at any time after buffers have been allocated with the
54&VIDIOC-REQBUFS; ioctl.</para> 54&VIDIOC-REQBUFS; ioctl.</para>
55 55
@@ -71,6 +71,7 @@ the structure.</para>
71 71
72 <para>In the <structfield>flags</structfield> field the 72 <para>In the <structfield>flags</structfield> field the
73<constant>V4L2_BUF_FLAG_MAPPED</constant>, 73<constant>V4L2_BUF_FLAG_MAPPED</constant>,
74<constant>V4L2_BUF_FLAG_PREPARED</constant>,
74<constant>V4L2_BUF_FLAG_QUEUED</constant> and 75<constant>V4L2_BUF_FLAG_QUEUED</constant> and
75<constant>V4L2_BUF_FLAG_DONE</constant> flags will be valid. The 76<constant>V4L2_BUF_FLAG_DONE</constant> flags will be valid. The
76<structfield>memory</structfield> field will be set to the current 77<structfield>memory</structfield> field will be set to the current
@@ -79,8 +80,10 @@ contains the offset of the buffer from the start of the device memory,
79the <structfield>length</structfield> field its size. For the multi-planar API, 80the <structfield>length</structfield> field its size. For the multi-planar API,
80fields <structfield>m.mem_offset</structfield> and 81fields <structfield>m.mem_offset</structfield> and
81<structfield>length</structfield> in the <structfield>m.planes</structfield> 82<structfield>length</structfield> in the <structfield>m.planes</structfield>
82array elements will be used instead. The driver may or may not set the remaining 83array elements will be used instead and the <structfield>length</structfield>
83fields and flags, they are meaningless in this context.</para> 84field of &v4l2-buffer; is set to the number of filled-in array elements.
85The driver may or may not set the remaining fields and flags, they are
86meaningless in this context.</para>
84 87
85 <para>The <structname>v4l2_buffer</structname> structure is 88 <para>The <structname>v4l2_buffer</structname> structure is
86 specified in <xref linkend="buffer" />.</para> 89 specified in <xref linkend="buffer" />.</para>
diff --git a/Documentation/DocBook/media/v4l/vidioc-querycap.xml b/Documentation/DocBook/media/v4l/vidioc-querycap.xml
index f33dd746b66b..4c70215ae03f 100644
--- a/Documentation/DocBook/media/v4l/vidioc-querycap.xml
+++ b/Documentation/DocBook/media/v4l/vidioc-querycap.xml
@@ -90,11 +90,13 @@ ambiguities.</entry>
90 <entry>__u8</entry> 90 <entry>__u8</entry>
91 <entry><structfield>bus_info</structfield>[32]</entry> 91 <entry><structfield>bus_info</structfield>[32]</entry>
92 <entry>Location of the device in the system, a 92 <entry>Location of the device in the system, a
93NUL-terminated ASCII string. For example: "PCI Slot 4". This 93NUL-terminated ASCII string. For example: "PCI:0000:05:06.0". This
94information is intended for users, to distinguish multiple 94information is intended for users, to distinguish multiple
95identical devices. If no such information is available the field may 95identical devices. If no such information is available the field must
96simply count the devices controlled by the driver, or contain the 96simply count the devices controlled by the driver ("platform:vivi-000").
97empty string (<structfield>bus_info</structfield>[0] = 0).<!-- XXX pci_dev->slot_name example --></entry> 97The bus_info must start with "PCI:" for PCI boards, "PCIe:" for PCI Express boards,
98"usb-" for USB devices, "I2C:" for i2c devices, "ISA:" for ISA devices,
99"parport" for parallel port devices and "platform:" for platform devices.</entry>
98 </row> 100 </row>
99 <row> 101 <row>
100 <entry>__u32</entry> 102 <entry>__u32</entry>
diff --git a/Documentation/DocBook/media/v4l/vidioc-querystd.xml b/Documentation/DocBook/media/v4l/vidioc-querystd.xml
index 4b79c7c04ed6..fe80a183d957 100644
--- a/Documentation/DocBook/media/v4l/vidioc-querystd.xml
+++ b/Documentation/DocBook/media/v4l/vidioc-querystd.xml
@@ -62,5 +62,13 @@ current video input or output.</para>
62 62
63 <refsect1> 63 <refsect1>
64 &return-value; 64 &return-value;
65 <variablelist>
66 <varlistentry>
67 <term><errorcode>ENODATA</errorcode></term>
68 <listitem>
69 <para>Standard video timings are not supported for this input or output.</para>
70 </listitem>
71 </varlistentry>
72 </variablelist>
65 </refsect1> 73 </refsect1>
66</refentry> 74</refentry>
diff --git a/Documentation/DocBook/media/v4l/vidioc-reqbufs.xml b/Documentation/DocBook/media/v4l/vidioc-reqbufs.xml
index d7c95057bc51..2b50ef2007f3 100644
--- a/Documentation/DocBook/media/v4l/vidioc-reqbufs.xml
+++ b/Documentation/DocBook/media/v4l/vidioc-reqbufs.xml
@@ -109,9 +109,8 @@ as the &v4l2-format; <structfield>type</structfield> field. See <xref
109 <row> 109 <row>
110 <entry>__u32</entry> 110 <entry>__u32</entry>
111 <entry><structfield>reserved</structfield>[2]</entry> 111 <entry><structfield>reserved</structfield>[2]</entry>
112 <entry>A place holder for future extensions and custom 112 <entry>A place holder for future extensions. This array should
113(driver defined) buffer types <constant>V4L2_BUF_TYPE_PRIVATE</constant> and 113be zeroed by applications.</entry>
114higher. This array should be zeroed by applications.</entry>
115 </row> 114 </row>
116 </tbody> 115 </tbody>
117 </tgroup> 116 </tgroup>
diff --git a/Documentation/DocBook/media/v4l/vidioc-s-hw-freq-seek.xml b/Documentation/DocBook/media/v4l/vidioc-s-hw-freq-seek.xml
index 3dd1bec6d3c7..5b379e752194 100644
--- a/Documentation/DocBook/media/v4l/vidioc-s-hw-freq-seek.xml
+++ b/Documentation/DocBook/media/v4l/vidioc-s-hw-freq-seek.xml
@@ -75,6 +75,9 @@ seek is started.</para>
75 75
76 <para>This ioctl is supported if the <constant>V4L2_CAP_HW_FREQ_SEEK</constant> capability is set.</para> 76 <para>This ioctl is supported if the <constant>V4L2_CAP_HW_FREQ_SEEK</constant> capability is set.</para>
77 77
78 <para>If this ioctl is called from a non-blocking filehandle, then &EAGAIN; is
79 returned and no seek takes place.</para>
80
78 <table pgwide="1" frame="none" id="v4l2-hw-freq-seek"> 81 <table pgwide="1" frame="none" id="v4l2-hw-freq-seek">
79 <title>struct <structname>v4l2_hw_freq_seek</structname></title> 82 <title>struct <structname>v4l2_hw_freq_seek</structname></title>
80 <tgroup cols="3"> 83 <tgroup cols="3">
@@ -158,6 +161,13 @@ fields is wrong.</para>
158 </listitem> 161 </listitem>
159 </varlistentry> 162 </varlistentry>
160 <varlistentry> 163 <varlistentry>
164 <term><errorcode>EAGAIN</errorcode></term>
165 <listitem>
166 <para>Attempted to call <constant>VIDIOC_S_HW_FREQ_SEEK</constant>
167 with the filehandle in non-blocking mode.</para>
168 </listitem>
169 </varlistentry>
170 <varlistentry>
161 <term><errorcode>ENODATA</errorcode></term> 171 <term><errorcode>ENODATA</errorcode></term>
162 <listitem> 172 <listitem>
163 <para>The hardware seek found no channels.</para> 173 <para>The hardware seek found no channels.</para>
diff --git a/Documentation/DocBook/media/v4l/vidioc-streamon.xml b/Documentation/DocBook/media/v4l/vidioc-streamon.xml
index 81cca4569050..716ea15e54a1 100644
--- a/Documentation/DocBook/media/v4l/vidioc-streamon.xml
+++ b/Documentation/DocBook/media/v4l/vidioc-streamon.xml
@@ -74,7 +74,12 @@ not transmitted yet. I/O returns to the same state as after calling
74stream type. This is the same as &v4l2-requestbuffers; 74stream type. This is the same as &v4l2-requestbuffers;
75<structfield>type</structfield>.</para> 75<structfield>type</structfield>.</para>
76 76
77 <para>Note applications can be preempted for unknown periods right 77 <para>If <constant>VIDIOC_STREAMON</constant> is called when streaming
78is already in progress, or if <constant>VIDIOC_STREAMOFF</constant> is called
79when streaming is already stopped, then the ioctl does nothing and 0 is
80returned.</para>
81
82 <para>Note that applications can be preempted for unknown periods right
78before or after the <constant>VIDIOC_STREAMON</constant> or 83before or after the <constant>VIDIOC_STREAMON</constant> or
79<constant>VIDIOC_STREAMOFF</constant> calls, there is no notion of 84<constant>VIDIOC_STREAMOFF</constant> calls, there is no notion of
80starting or stopping "now". Buffer timestamps can be used to 85starting or stopping "now". Buffer timestamps can be used to
diff --git a/Documentation/DocBook/media/v4l/vidioc-subdev-g-edid.xml b/Documentation/DocBook/media/v4l/vidioc-subdev-g-edid.xml
new file mode 100644
index 000000000000..bbd18f0e6ede
--- /dev/null
+++ b/Documentation/DocBook/media/v4l/vidioc-subdev-g-edid.xml
@@ -0,0 +1,152 @@
1<refentry id="vidioc-subdev-g-edid">
2 <refmeta>
3 <refentrytitle>ioctl VIDIOC_SUBDEV_G_EDID, VIDIOC_SUBDEV_S_EDID</refentrytitle>
4 &manvol;
5 </refmeta>
6
7 <refnamediv>
8 <refname>VIDIOC_SUBDEV_G_EDID</refname>
9 <refname>VIDIOC_SUBDEV_S_EDID</refname>
10 <refpurpose>Get or set the EDID of a video receiver/transmitter</refpurpose>
11 </refnamediv>
12
13 <refsynopsisdiv>
14 <funcsynopsis>
15 <funcprototype>
16 <funcdef>int <function>ioctl</function></funcdef>
17 <paramdef>int <parameter>fd</parameter></paramdef>
18 <paramdef>int <parameter>request</parameter></paramdef>
19 <paramdef>struct v4l2_subdev_edid *<parameter>argp</parameter></paramdef>
20 </funcprototype>
21 </funcsynopsis>
22 <funcsynopsis>
23 <funcprototype>
24 <funcdef>int <function>ioctl</function></funcdef>
25 <paramdef>int <parameter>fd</parameter></paramdef>
26 <paramdef>int <parameter>request</parameter></paramdef>
27 <paramdef>const struct v4l2_subdev_edid *<parameter>argp</parameter></paramdef>
28 </funcprototype>
29 </funcsynopsis>
30 </refsynopsisdiv>
31
32 <refsect1>
33 <title>Arguments</title>
34
35 <variablelist>
36 <varlistentry>
37 <term><parameter>fd</parameter></term>
38 <listitem>
39 <para>&fd;</para>
40 </listitem>
41 </varlistentry>
42 <varlistentry>
43 <term><parameter>request</parameter></term>
44 <listitem>
45 <para>VIDIOC_SUBDEV_G_EDID, VIDIOC_SUBDEV_S_EDID</para>
46 </listitem>
47 </varlistentry>
48 <varlistentry>
49 <term><parameter>argp</parameter></term>
50 <listitem>
51 <para></para>
52 </listitem>
53 </varlistentry>
54 </variablelist>
55 </refsect1>
56
57 <refsect1>
58 <title>Description</title>
59 <para>These ioctls can be used to get or set an EDID associated with an input pad
60 from a receiver or an output pad of a transmitter subdevice.</para>
61
62 <para>To get the EDID data the application has to fill in the <structfield>pad</structfield>,
63 <structfield>start_block</structfield>, <structfield>blocks</structfield> and <structfield>edid</structfield>
64 fields and call <constant>VIDIOC_SUBDEV_G_EDID</constant>. The current EDID from block
65 <structfield>start_block</structfield> and of size <structfield>blocks</structfield>
66 will be placed in the memory <structfield>edid</structfield> points to. The <structfield>edid</structfield>
67 pointer must point to memory at least <structfield>blocks</structfield>&nbsp;*&nbsp;128 bytes
68 large (the size of one block is 128 bytes).</para>
69
70 <para>If there are fewer blocks than specified, then the driver will set <structfield>blocks</structfield>
71 to the actual number of blocks. If there are no EDID blocks available at all, then the error code
72 ENODATA is set.</para>
73
74 <para>If blocks have to be retrieved from the sink, then this call will block until they
75 have been read.</para>
76
77 <para>To set the EDID blocks of a receiver the application has to fill in the <structfield>pad</structfield>,
78 <structfield>blocks</structfield> and <structfield>edid</structfield> fields and set
79 <structfield>start_block</structfield> to 0. It is not possible to set part of an EDID,
80 it is always all or nothing. Setting the EDID data is only valid for receivers as it makes
81 no sense for a transmitter.</para>
82
83 <para>The driver assumes that the full EDID is passed in. If there are more EDID blocks than
84 the hardware can handle then the EDID is not written, but instead the error code E2BIG is set
85 and <structfield>blocks</structfield> is set to the maximum that the hardware supports.
86 If <structfield>start_block</structfield> is any
87 value other than 0 then the error code EINVAL is set.</para>
88
89 <para>To disable an EDID you set <structfield>blocks</structfield> to 0. Depending on the
90 hardware this will drive the hotplug pin low and/or block the source from reading the EDID
91 data in some way. In any case, the end result is the same: the EDID is no longer available.
92 </para>
93
94 <table pgwide="1" frame="none" id="v4l2-subdev-edid">
95 <title>struct <structname>v4l2_subdev_edid</structname></title>
96 <tgroup cols="3">
97 &cs-str;
98 <tbody valign="top">
99 <row>
100 <entry>__u32</entry>
101 <entry><structfield>pad</structfield></entry>
102 <entry>Pad for which to get/set the EDID blocks.</entry>
103 </row>
104 <row>
105 <entry>__u32</entry>
106 <entry><structfield>start_block</structfield></entry>
107 <entry>Read the EDID from starting with this block. Must be 0 when setting
108 the EDID.</entry>
109 </row>
110 <row>
111 <entry>__u32</entry>
112 <entry><structfield>blocks</structfield></entry>
113 <entry>The number of blocks to get or set. Must be less or equal to 256 (the
114 maximum number of blocks as defined by the standard). When you set the EDID and
115 <structfield>blocks</structfield> is 0, then the EDID is disabled or erased.</entry>
116 </row>
117 <row>
118 <entry>__u8&nbsp;*</entry>
119 <entry><structfield>edid</structfield></entry>
120 <entry>Pointer to memory that contains the EDID. The minimum size is
121 <structfield>blocks</structfield>&nbsp;*&nbsp;128.</entry>
122 </row>
123 <row>
124 <entry>__u32</entry>
125 <entry><structfield>reserved</structfield>[5]</entry>
126 <entry>Reserved for future extensions. Applications and drivers must
127 set the array to zero.</entry>
128 </row>
129 </tbody>
130 </tgroup>
131 </table>
132 </refsect1>
133
134 <refsect1>
135 &return-value;
136
137 <variablelist>
138 <varlistentry>
139 <term><errorcode>ENODATA</errorcode></term>
140 <listitem>
141 <para>The EDID data is not available.</para>
142 </listitem>
143 </varlistentry>
144 <varlistentry>
145 <term><errorcode>E2BIG</errorcode></term>
146 <listitem>
147 <para>The EDID data you provided is more than the hardware can handle.</para>
148 </listitem>
149 </varlistentry>
150 </variablelist>
151 </refsect1>
152</refentry>
diff --git a/Documentation/DocBook/media/v4l/vidioc-subdev-g-selection.xml b/Documentation/DocBook/media/v4l/vidioc-subdev-g-selection.xml
index f33cc814a01d..1ba9e999af3f 100644
--- a/Documentation/DocBook/media/v4l/vidioc-subdev-g-selection.xml
+++ b/Documentation/DocBook/media/v4l/vidioc-subdev-g-selection.xml
@@ -69,23 +69,22 @@
69 more information on how each selection target affects the image 69 more information on how each selection target affects the image
70 processing pipeline inside the subdevice.</para> 70 processing pipeline inside the subdevice.</para>
71 71
72 <section> 72 <refsect2>
73 <title>Types of selection targets</title> 73 <title>Types of selection targets</title>
74 74
75 <para>There are two types of selection targets: actual and bounds. The 75 <para>There are two types of selection targets: actual and bounds. The
76 actual targets are the targets which configure the hardware. The BOUNDS 76 actual targets are the targets which configure the hardware. The BOUNDS
77 target will return a rectangle that contain all possible actual 77 target will return a rectangle that contain all possible actual
78 rectangles.</para> 78 rectangles.</para>
79 </section> 79 </refsect2>
80 80
81 <section> 81 <refsect2>
82 <title>Discovering supported features</title> 82 <title>Discovering supported features</title>
83 83
84 <para>To discover which targets are supported, the user can 84 <para>To discover which targets are supported, the user can
85 perform <constant>VIDIOC_SUBDEV_G_SELECTION</constant> on them. 85 perform <constant>VIDIOC_SUBDEV_G_SELECTION</constant> on them.
86 Any unsupported target will return 86 Any unsupported target will return
87 <constant>EINVAL</constant>.</para> 87 <constant>EINVAL</constant>.</para>
88 </section>
89 88
90 <para>Selection targets and flags are documented in <xref 89 <para>Selection targets and flags are documented in <xref
91 linkend="v4l2-selections-common"/>.</para> 90 linkend="v4l2-selections-common"/>.</para>
@@ -132,6 +131,7 @@
132 </tbody> 131 </tbody>
133 </tgroup> 132 </tgroup>
134 </table> 133 </table>
134 </refsect2>
135 135
136 </refsect1> 136 </refsect1>
137 137
diff --git a/Documentation/DocBook/media_api.tmpl b/Documentation/DocBook/media_api.tmpl
index 4e8e8985cc17..f2413acfe241 100644
--- a/Documentation/DocBook/media_api.tmpl
+++ b/Documentation/DocBook/media_api.tmpl
@@ -29,7 +29,7 @@
29<title>LINUX MEDIA INFRASTRUCTURE API</title> 29<title>LINUX MEDIA INFRASTRUCTURE API</title>
30 30
31<copyright> 31<copyright>
32 <year>2009-2011</year> 32 <year>2009-2012</year>
33 <holder>LinuxTV Developers</holder> 33 <holder>LinuxTV Developers</holder>
34</copyright> 34</copyright>
35 35
@@ -53,7 +53,7 @@ Foundation. A copy of the license is included in the chapter entitled
53 video and radio straming devices, including video cameras, 53 video and radio straming devices, including video cameras,
54 analog and digital TV receiver cards, AM/FM receiver cards, 54 analog and digital TV receiver cards, AM/FM receiver cards,
55 streaming capture devices.</para> 55 streaming capture devices.</para>
56 <para>It is divided into three parts.</para> 56 <para>It is divided into four parts.</para>
57 <para>The first part covers radio, capture, 57 <para>The first part covers radio, capture,
58 cameras and analog TV devices.</para> 58 cameras and analog TV devices.</para>
59 <para>The second part covers the 59 <para>The second part covers the
@@ -62,7 +62,8 @@ Foundation. A copy of the license is included in the chapter entitled
62 in fact it covers several different video standards including 62 in fact it covers several different video standards including
63 DVB-T, DVB-S, DVB-C and ATSC. The API is currently being updated 63 DVB-T, DVB-S, DVB-C and ATSC. The API is currently being updated
64 to documment support also for DVB-S2, ISDB-T and ISDB-S.</para> 64 to documment support also for DVB-S2, ISDB-T and ISDB-S.</para>
65 <para>The third part covers Remote Controller API</para> 65 <para>The third part covers the Remote Controller API.</para>
66 <para>The fourth part covers the Media Controller API.</para>
66 <para>For additional information and for the latest development code, 67 <para>For additional information and for the latest development code,
67 see: <ulink url="http://linuxtv.org">http://linuxtv.org</ulink>.</para> 68 see: <ulink url="http://linuxtv.org">http://linuxtv.org</ulink>.</para>
68 <para>For discussing improvements, reporting troubles, sending new drivers, etc, please mail to: <ulink url="http://vger.kernel.org/vger-lists.html#linux-media">Linux Media Mailing List (LMML).</ulink>.</para> 69 <para>For discussing improvements, reporting troubles, sending new drivers, etc, please mail to: <ulink url="http://vger.kernel.org/vger-lists.html#linux-media">Linux Media Mailing List (LMML).</ulink>.</para>
@@ -87,7 +88,7 @@ Foundation. A copy of the license is included in the chapter entitled
87</author> 88</author>
88</authorgroup> 89</authorgroup>
89<copyright> 90<copyright>
90 <year>2009-2011</year> 91 <year>2009-2012</year>
91 <holder>Mauro Carvalho Chehab</holder> 92 <holder>Mauro Carvalho Chehab</holder>
92</copyright> 93</copyright>
93 94
diff --git a/Documentation/DocBook/mtdnand.tmpl b/Documentation/DocBook/mtdnand.tmpl
index e0aedb7a7827..fe122d6e686f 100644
--- a/Documentation/DocBook/mtdnand.tmpl
+++ b/Documentation/DocBook/mtdnand.tmpl
@@ -1216,8 +1216,6 @@ in this page</entry>
1216#define NAND_BBT_LASTBLOCK 0x00000010 1216#define NAND_BBT_LASTBLOCK 0x00000010
1217/* The bbt is at the given page, else we must scan for the bbt */ 1217/* The bbt is at the given page, else we must scan for the bbt */
1218#define NAND_BBT_ABSPAGE 0x00000020 1218#define NAND_BBT_ABSPAGE 0x00000020
1219/* The bbt is at the given page, else we must scan for the bbt */
1220#define NAND_BBT_SEARCH 0x00000040
1221/* bbt is stored per chip on multichip devices */ 1219/* bbt is stored per chip on multichip devices */
1222#define NAND_BBT_PERCHIP 0x00000080 1220#define NAND_BBT_PERCHIP 0x00000080
1223/* bbt has a version counter at offset veroffs */ 1221/* bbt has a version counter at offset veroffs */
diff --git a/Documentation/DocBook/networking.tmpl b/Documentation/DocBook/networking.tmpl
index 59ad69a9d777..29df25016c7c 100644
--- a/Documentation/DocBook/networking.tmpl
+++ b/Documentation/DocBook/networking.tmpl
@@ -56,7 +56,7 @@
56!Enet/core/filter.c 56!Enet/core/filter.c
57 </sect1> 57 </sect1>
58 <sect1><title>Generic Network Statistics</title> 58 <sect1><title>Generic Network Statistics</title>
59!Iinclude/linux/gen_stats.h 59!Iinclude/uapi/linux/gen_stats.h
60!Enet/core/gen_stats.c 60!Enet/core/gen_stats.c
61!Enet/core/gen_estimator.c 61!Enet/core/gen_estimator.c
62 </sect1> 62 </sect1>
@@ -80,7 +80,7 @@
80!Enet/wimax/op-rfkill.c 80!Enet/wimax/op-rfkill.c
81!Enet/wimax/stack.c 81!Enet/wimax/stack.c
82!Iinclude/net/wimax.h 82!Iinclude/net/wimax.h
83!Iinclude/linux/wimax.h 83!Iinclude/uapi/linux/wimax.h
84 </sect1> 84 </sect1>
85 </chapter> 85 </chapter>
86 86