diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2010-05-21 00:26:12 -0400 |
---|---|---|
committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-05-21 00:26:12 -0400 |
commit | 7a9b149212f3716c598afe973b6261fd58453b7a (patch) | |
tree | 477716d84c71da124448b72278e98da28aadbd3d /Documentation/usb | |
parent | 3d62e3fdce8ef265a3706c52ae1ca6ab84e30f0e (diff) | |
parent | e26bcf37234c67624f62d9fc95f922b8dbda1363 (diff) |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6: (229 commits)
USB: remove unused usb_buffer_alloc and usb_buffer_free macros
usb: musb: update gfp/slab.h includes
USB: ftdi_sio: fix legacy SIO-device header
USB: kl5usb105: reimplement using generic framework
USB: kl5usb105: minor clean ups
USB: kl5usb105: fix memory leak
USB: io_ti: use kfifo to implement write buffering
USB: io_ti: remove unsused private counter
USB: ti_usb: use kfifo to implement write buffering
USB: ir-usb: fix incorrect write-buffer length
USB: aircable: fix incorrect write-buffer length
USB: safe_serial: straighten out read processing
USB: safe_serial: reimplement read using generic framework
USB: safe_serial: reimplement write using generic framework
usb-storage: always print quirks
USB: usb-storage: trivial debug improvements
USB: oti6858: use port write fifo
USB: oti6858: use kfifo to implement write buffering
USB: cypress_m8: use kfifo to implement write buffering
USB: cypress_m8: remove unused drain define
...
Fix up conflicts (due to usb_buffer_alloc/free renaming) in
drivers/input/tablet/acecad.c
drivers/input/tablet/kbtab.c
drivers/input/tablet/wacom_sys.c
drivers/media/video/gspca/gspca.c
sound/usb/usbaudio.c
Diffstat (limited to 'Documentation/usb')
-rw-r--r-- | Documentation/usb/bulk-streams.txt | 78 | ||||
-rw-r--r-- | Documentation/usb/dma.txt | 22 | ||||
-rw-r--r-- | Documentation/usb/gadget_hid.txt | 445 | ||||
-rw-r--r-- | Documentation/usb/power-management.txt | 19 | ||||
-rw-r--r-- | Documentation/usb/usb-serial.txt | 29 |
5 files changed, 567 insertions, 26 deletions
diff --git a/Documentation/usb/bulk-streams.txt b/Documentation/usb/bulk-streams.txt new file mode 100644 index 000000000000..ffc02021863e --- /dev/null +++ b/Documentation/usb/bulk-streams.txt | |||
@@ -0,0 +1,78 @@ | |||
1 | Background | ||
2 | ========== | ||
3 | |||
4 | Bulk endpoint streams were added in the USB 3.0 specification. Streams allow a | ||
5 | device driver to overload a bulk endpoint so that multiple transfers can be | ||
6 | queued at once. | ||
7 | |||
8 | Streams are defined in sections 4.4.6.4 and 8.12.1.4 of the Universal Serial Bus | ||
9 | 3.0 specification at http://www.usb.org/developers/docs/ The USB Attached SCSI | ||
10 | Protocol, which uses streams to queue multiple SCSI commands, can be found on | ||
11 | the T10 website (http://t10.org/). | ||
12 | |||
13 | |||
14 | Device-side implications | ||
15 | ======================== | ||
16 | |||
17 | Once a buffer has been queued to a stream ring, the device is notified (through | ||
18 | an out-of-band mechanism on another endpoint) that data is ready for that stream | ||
19 | ID. The device then tells the host which "stream" it wants to start. The host | ||
20 | can also initiate a transfer on a stream without the device asking, but the | ||
21 | device can refuse that transfer. Devices can switch between streams at any | ||
22 | time. | ||
23 | |||
24 | |||
25 | Driver implications | ||
26 | =================== | ||
27 | |||
28 | int usb_alloc_streams(struct usb_interface *interface, | ||
29 | struct usb_host_endpoint **eps, unsigned int num_eps, | ||
30 | unsigned int num_streams, gfp_t mem_flags); | ||
31 | |||
32 | Device drivers will call this API to request that the host controller driver | ||
33 | allocate memory so the driver can use up to num_streams stream IDs. They must | ||
34 | pass an array of usb_host_endpoints that need to be setup with similar stream | ||
35 | IDs. This is to ensure that a UASP driver will be able to use the same stream | ||
36 | ID for the bulk IN and OUT endpoints used in a Bi-directional command sequence. | ||
37 | |||
38 | The return value is an error condition (if one of the endpoints doesn't support | ||
39 | streams, or the xHCI driver ran out of memory), or the number of streams the | ||
40 | host controller allocated for this endpoint. The xHCI host controller hardware | ||
41 | declares how many stream IDs it can support, and each bulk endpoint on a | ||
42 | SuperSpeed device will say how many stream IDs it can handle. Therefore, | ||
43 | drivers should be able to deal with being allocated less stream IDs than they | ||
44 | requested. | ||
45 | |||
46 | Do NOT call this function if you have URBs enqueued for any of the endpoints | ||
47 | passed in as arguments. Do not call this function to request less than two | ||
48 | streams. | ||
49 | |||
50 | Drivers will only be allowed to call this API once for the same endpoint | ||
51 | without calling usb_free_streams(). This is a simplification for the xHCI host | ||
52 | controller driver, and may change in the future. | ||
53 | |||
54 | |||
55 | Picking new Stream IDs to use | ||
56 | ============================ | ||
57 | |||
58 | Stream ID 0 is reserved, and should not be used to communicate with devices. If | ||
59 | usb_alloc_streams() returns with a value of N, you may use streams 1 though N. | ||
60 | To queue an URB for a specific stream, set the urb->stream_id value. If the | ||
61 | endpoint does not support streams, an error will be returned. | ||
62 | |||
63 | Note that new API to choose the next stream ID will have to be added if the xHCI | ||
64 | driver supports secondary stream IDs. | ||
65 | |||
66 | |||
67 | Clean up | ||
68 | ======== | ||
69 | |||
70 | If a driver wishes to stop using streams to communicate with the device, it | ||
71 | should call | ||
72 | |||
73 | void usb_free_streams(struct usb_interface *interface, | ||
74 | struct usb_host_endpoint **eps, unsigned int num_eps, | ||
75 | gfp_t mem_flags); | ||
76 | |||
77 | All stream IDs will be deallocated when the driver releases the interface, to | ||
78 | ensure that drivers that don't support streams will be able to use the endpoint. | ||
diff --git a/Documentation/usb/dma.txt b/Documentation/usb/dma.txt index cfdcd16e3abf..84ef865237db 100644 --- a/Documentation/usb/dma.txt +++ b/Documentation/usb/dma.txt | |||
@@ -16,11 +16,11 @@ OR: they can now be DMA-aware. | |||
16 | manage dma mappings for existing dma-ready buffers (see below). | 16 | manage dma mappings for existing dma-ready buffers (see below). |
17 | 17 | ||
18 | - URBs have an additional "transfer_dma" field, as well as a transfer_flags | 18 | - URBs have an additional "transfer_dma" field, as well as a transfer_flags |
19 | bit saying if it's valid. (Control requests also have "setup_dma" and a | 19 | bit saying if it's valid. (Control requests also have "setup_dma", but |
20 | corresponding transfer_flags bit.) | 20 | drivers must not use it.) |
21 | 21 | ||
22 | - "usbcore" will map those DMA addresses, if a DMA-aware driver didn't do | 22 | - "usbcore" will map this DMA address, if a DMA-aware driver didn't do |
23 | it first and set URB_NO_TRANSFER_DMA_MAP or URB_NO_SETUP_DMA_MAP. HCDs | 23 | it first and set URB_NO_TRANSFER_DMA_MAP. HCDs |
24 | don't manage dma mappings for URBs. | 24 | don't manage dma mappings for URBs. |
25 | 25 | ||
26 | - There's a new "generic DMA API", parts of which are usable by USB device | 26 | - There's a new "generic DMA API", parts of which are usable by USB device |
@@ -43,22 +43,16 @@ and effects like cache-trashing can impose subtle penalties. | |||
43 | kind of addresses to store in urb->transfer_buffer and urb->transfer_dma. | 43 | kind of addresses to store in urb->transfer_buffer and urb->transfer_dma. |
44 | You'd also set URB_NO_TRANSFER_DMA_MAP in urb->transfer_flags: | 44 | You'd also set URB_NO_TRANSFER_DMA_MAP in urb->transfer_flags: |
45 | 45 | ||
46 | void *usb_buffer_alloc (struct usb_device *dev, size_t size, | 46 | void *usb_alloc_coherent (struct usb_device *dev, size_t size, |
47 | int mem_flags, dma_addr_t *dma); | 47 | int mem_flags, dma_addr_t *dma); |
48 | 48 | ||
49 | void usb_buffer_free (struct usb_device *dev, size_t size, | 49 | void usb_free_coherent (struct usb_device *dev, size_t size, |
50 | void *addr, dma_addr_t dma); | 50 | void *addr, dma_addr_t dma); |
51 | 51 | ||
52 | Most drivers should *NOT* be using these primitives; they don't need | 52 | Most drivers should *NOT* be using these primitives; they don't need |
53 | to use this type of memory ("dma-coherent"), and memory returned from | 53 | to use this type of memory ("dma-coherent"), and memory returned from |
54 | kmalloc() will work just fine. | 54 | kmalloc() will work just fine. |
55 | 55 | ||
56 | For control transfers you can use the buffer primitives or not for each | ||
57 | of the transfer buffer and setup buffer independently. Set the flag bits | ||
58 | URB_NO_TRANSFER_DMA_MAP and URB_NO_SETUP_DMA_MAP to indicate which | ||
59 | buffers you have prepared. For non-control transfers URB_NO_SETUP_DMA_MAP | ||
60 | is ignored. | ||
61 | |||
62 | The memory buffer returned is "dma-coherent"; sometimes you might need to | 56 | The memory buffer returned is "dma-coherent"; sometimes you might need to |
63 | force a consistent memory access ordering by using memory barriers. It's | 57 | force a consistent memory access ordering by using memory barriers. It's |
64 | not using a streaming DMA mapping, so it's good for small transfers on | 58 | not using a streaming DMA mapping, so it's good for small transfers on |
@@ -130,8 +124,8 @@ of Documentation/PCI/PCI-DMA-mapping.txt, titled "What memory is DMA-able?") | |||
130 | void usb_buffer_unmap (struct urb *urb); | 124 | void usb_buffer_unmap (struct urb *urb); |
131 | 125 | ||
132 | The calls manage urb->transfer_dma for you, and set URB_NO_TRANSFER_DMA_MAP | 126 | The calls manage urb->transfer_dma for you, and set URB_NO_TRANSFER_DMA_MAP |
133 | so that usbcore won't map or unmap the buffer. The same goes for | 127 | so that usbcore won't map or unmap the buffer. They cannot be used for |
134 | urb->setup_dma and URB_NO_SETUP_DMA_MAP for control requests. | 128 | setup_packet buffers in control requests. |
135 | 129 | ||
136 | Note that several of those interfaces are currently commented out, since | 130 | Note that several of those interfaces are currently commented out, since |
137 | they don't have current users. See the source code. Other than the dmasync | 131 | they don't have current users. See the source code. Other than the dmasync |
diff --git a/Documentation/usb/gadget_hid.txt b/Documentation/usb/gadget_hid.txt new file mode 100644 index 000000000000..f4a51f567427 --- /dev/null +++ b/Documentation/usb/gadget_hid.txt | |||
@@ -0,0 +1,445 @@ | |||
1 | |||
2 | Linux USB HID gadget driver | ||
3 | |||
4 | Introduction | ||
5 | |||
6 | The HID Gadget driver provides emulation of USB Human Interface | ||
7 | Devices (HID). The basic HID handling is done in the kernel, | ||
8 | and HID reports can be sent/received through I/O on the | ||
9 | /dev/hidgX character devices. | ||
10 | |||
11 | For more details about HID, see the developer page on | ||
12 | http://www.usb.org/developers/hidpage/ | ||
13 | |||
14 | Configuration | ||
15 | |||
16 | g_hid is a platform driver, so to use it you need to add | ||
17 | struct platform_device(s) to your platform code defining the | ||
18 | HID function descriptors you want to use - E.G. something | ||
19 | like: | ||
20 | |||
21 | #include <linux/platform_device.h> | ||
22 | #include <linux/usb/g_hid.h> | ||
23 | |||
24 | /* hid descriptor for a keyboard */ | ||
25 | static struct hidg_func_descriptor my_hid_data = { | ||
26 | .subclass = 0, /* No subclass */ | ||
27 | .protocol = 1, /* Keyboard */ | ||
28 | .report_length = 8, | ||
29 | .report_desc_length = 63, | ||
30 | .report_desc = { | ||
31 | 0x05, 0x01, /* USAGE_PAGE (Generic Desktop) */ | ||
32 | 0x09, 0x06, /* USAGE (Keyboard) */ | ||
33 | 0xa1, 0x01, /* COLLECTION (Application) */ | ||
34 | 0x05, 0x07, /* USAGE_PAGE (Keyboard) */ | ||
35 | 0x19, 0xe0, /* USAGE_MINIMUM (Keyboard LeftControl) */ | ||
36 | 0x29, 0xe7, /* USAGE_MAXIMUM (Keyboard Right GUI) */ | ||
37 | 0x15, 0x00, /* LOGICAL_MINIMUM (0) */ | ||
38 | 0x25, 0x01, /* LOGICAL_MAXIMUM (1) */ | ||
39 | 0x75, 0x01, /* REPORT_SIZE (1) */ | ||
40 | 0x95, 0x08, /* REPORT_COUNT (8) */ | ||
41 | 0x81, 0x02, /* INPUT (Data,Var,Abs) */ | ||
42 | 0x95, 0x01, /* REPORT_COUNT (1) */ | ||
43 | 0x75, 0x08, /* REPORT_SIZE (8) */ | ||
44 | 0x81, 0x03, /* INPUT (Cnst,Var,Abs) */ | ||
45 | 0x95, 0x05, /* REPORT_COUNT (5) */ | ||
46 | 0x75, 0x01, /* REPORT_SIZE (1) */ | ||
47 | 0x05, 0x08, /* USAGE_PAGE (LEDs) */ | ||
48 | 0x19, 0x01, /* USAGE_MINIMUM (Num Lock) */ | ||
49 | 0x29, 0x05, /* USAGE_MAXIMUM (Kana) */ | ||
50 | 0x91, 0x02, /* OUTPUT (Data,Var,Abs) */ | ||
51 | 0x95, 0x01, /* REPORT_COUNT (1) */ | ||
52 | 0x75, 0x03, /* REPORT_SIZE (3) */ | ||
53 | 0x91, 0x03, /* OUTPUT (Cnst,Var,Abs) */ | ||
54 | 0x95, 0x06, /* REPORT_COUNT (6) */ | ||
55 | 0x75, 0x08, /* REPORT_SIZE (8) */ | ||
56 | 0x15, 0x00, /* LOGICAL_MINIMUM (0) */ | ||
57 | 0x25, 0x65, /* LOGICAL_MAXIMUM (101) */ | ||
58 | 0x05, 0x07, /* USAGE_PAGE (Keyboard) */ | ||
59 | 0x19, 0x00, /* USAGE_MINIMUM (Reserved) */ | ||
60 | 0x29, 0x65, /* USAGE_MAXIMUM (Keyboard Application) */ | ||
61 | 0x81, 0x00, /* INPUT (Data,Ary,Abs) */ | ||
62 | 0xc0 /* END_COLLECTION */ | ||
63 | } | ||
64 | }; | ||
65 | |||
66 | static struct platform_device my_hid = { | ||
67 | .name = "hidg", | ||
68 | .id = 0, | ||
69 | .num_resources = 0, | ||
70 | .resource = 0, | ||
71 | .dev.platform_data = &my_hid_data, | ||
72 | }; | ||
73 | |||
74 | You can add as many HID functions as you want, only limited by | ||
75 | the amount of interrupt endpoints your gadget driver supports. | ||
76 | |||
77 | Send and receive HID reports | ||
78 | |||
79 | HID reports can be sent/received using read/write on the | ||
80 | /dev/hidgX character devices. See below for an example program | ||
81 | to do this. | ||
82 | |||
83 | hid_gadget_test is a small interactive program to test the HID | ||
84 | gadget driver. To use, point it at a hidg device and set the | ||
85 | device type (keyboard / mouse / joystick) - E.G.: | ||
86 | |||
87 | # hid_gadget_test /dev/hidg0 keyboard | ||
88 | |||
89 | You are now in the prompt of hid_gadget_test. You can type any | ||
90 | combination of options and values. Available options and | ||
91 | values are listed at program start. In keyboard mode you can | ||
92 | send up to six values. | ||
93 | |||
94 | For example type: g i s t r --left-shift | ||
95 | |||
96 | Hit return and the corresponding report will be sent by the | ||
97 | HID gadget. | ||
98 | |||
99 | Another interesting example is the caps lock test. Type | ||
100 | -–caps-lock and hit return. A report is then sent by the | ||
101 | gadget and you should receive the host answer, corresponding | ||
102 | to the caps lock LED status. | ||
103 | |||
104 | --caps-lock | ||
105 | recv report:2 | ||
106 | |||
107 | With this command: | ||
108 | |||
109 | # hid_gadget_test /dev/hidg1 mouse | ||
110 | |||
111 | You can test the mouse emulation. Values are two signed numbers. | ||
112 | |||
113 | |||
114 | Sample code | ||
115 | |||
116 | /* hid_gadget_test */ | ||
117 | |||
118 | #include <pthread.h> | ||
119 | #include <string.h> | ||
120 | #include <stdio.h> | ||
121 | #include <ctype.h> | ||
122 | #include <fcntl.h> | ||
123 | #include <errno.h> | ||
124 | #include <stdio.h> | ||
125 | #include <stdlib.h> | ||
126 | #include <unistd.h> | ||
127 | |||
128 | #define BUF_LEN 512 | ||
129 | |||
130 | struct options { | ||
131 | const char *opt; | ||
132 | unsigned char val; | ||
133 | }; | ||
134 | |||
135 | static struct options kmod[] = { | ||
136 | {.opt = "--left-ctrl", .val = 0x01}, | ||
137 | {.opt = "--right-ctrl", .val = 0x10}, | ||
138 | {.opt = "--left-shift", .val = 0x02}, | ||
139 | {.opt = "--right-shift", .val = 0x20}, | ||
140 | {.opt = "--left-alt", .val = 0x04}, | ||
141 | {.opt = "--right-alt", .val = 0x40}, | ||
142 | {.opt = "--left-meta", .val = 0x08}, | ||
143 | {.opt = "--right-meta", .val = 0x80}, | ||
144 | {.opt = NULL} | ||
145 | }; | ||
146 | |||
147 | static struct options kval[] = { | ||
148 | {.opt = "--return", .val = 0x28}, | ||
149 | {.opt = "--esc", .val = 0x29}, | ||
150 | {.opt = "--bckspc", .val = 0x2a}, | ||
151 | {.opt = "--tab", .val = 0x2b}, | ||
152 | {.opt = "--spacebar", .val = 0x2c}, | ||
153 | {.opt = "--caps-lock", .val = 0x39}, | ||
154 | {.opt = "--f1", .val = 0x3a}, | ||
155 | {.opt = "--f2", .val = 0x3b}, | ||
156 | {.opt = "--f3", .val = 0x3c}, | ||
157 | {.opt = "--f4", .val = 0x3d}, | ||
158 | {.opt = "--f5", .val = 0x3e}, | ||
159 | {.opt = "--f6", .val = 0x3f}, | ||
160 | {.opt = "--f7", .val = 0x40}, | ||
161 | {.opt = "--f8", .val = 0x41}, | ||
162 | {.opt = "--f9", .val = 0x42}, | ||
163 | {.opt = "--f10", .val = 0x43}, | ||
164 | {.opt = "--f11", .val = 0x44}, | ||
165 | {.opt = "--f12", .val = 0x45}, | ||
166 | {.opt = "--insert", .val = 0x49}, | ||
167 | {.opt = "--home", .val = 0x4a}, | ||
168 | {.opt = "--pageup", .val = 0x4b}, | ||
169 | {.opt = "--del", .val = 0x4c}, | ||
170 | {.opt = "--end", .val = 0x4d}, | ||
171 | {.opt = "--pagedown", .val = 0x4e}, | ||
172 | {.opt = "--right", .val = 0x4f}, | ||
173 | {.opt = "--left", .val = 0x50}, | ||
174 | {.opt = "--down", .val = 0x51}, | ||
175 | {.opt = "--kp-enter", .val = 0x58}, | ||
176 | {.opt = "--up", .val = 0x52}, | ||
177 | {.opt = "--num-lock", .val = 0x53}, | ||
178 | {.opt = NULL} | ||
179 | }; | ||
180 | |||
181 | int keyboard_fill_report(char report[8], char buf[BUF_LEN], int *hold) | ||
182 | { | ||
183 | char *tok = strtok(buf, " "); | ||
184 | int key = 0; | ||
185 | int i = 0; | ||
186 | |||
187 | for (; tok != NULL; tok = strtok(NULL, " ")) { | ||
188 | |||
189 | if (strcmp(tok, "--quit") == 0) | ||
190 | return -1; | ||
191 | |||
192 | if (strcmp(tok, "--hold") == 0) { | ||
193 | *hold = 1; | ||
194 | continue; | ||
195 | } | ||
196 | |||
197 | if (key < 6) { | ||
198 | for (i = 0; kval[i].opt != NULL; i++) | ||
199 | if (strcmp(tok, kval[i].opt) == 0) { | ||
200 | report[2 + key++] = kval[i].val; | ||
201 | break; | ||
202 | } | ||
203 | if (kval[i].opt != NULL) | ||
204 | continue; | ||
205 | } | ||
206 | |||
207 | if (key < 6) | ||
208 | if (islower(tok[0])) { | ||
209 | report[2 + key++] = (tok[0] - ('a' - 0x04)); | ||
210 | continue; | ||
211 | } | ||
212 | |||
213 | for (i = 0; kmod[i].opt != NULL; i++) | ||
214 | if (strcmp(tok, kmod[i].opt) == 0) { | ||
215 | report[0] = report[0] | kmod[i].val; | ||
216 | break; | ||
217 | } | ||
218 | if (kmod[i].opt != NULL) | ||
219 | continue; | ||
220 | |||
221 | if (key < 6) | ||
222 | fprintf(stderr, "unknown option: %s\n", tok); | ||
223 | } | ||
224 | return 8; | ||
225 | } | ||
226 | |||
227 | static struct options mmod[] = { | ||
228 | {.opt = "--b1", .val = 0x01}, | ||
229 | {.opt = "--b2", .val = 0x02}, | ||
230 | {.opt = "--b3", .val = 0x04}, | ||
231 | {.opt = NULL} | ||
232 | }; | ||
233 | |||
234 | int mouse_fill_report(char report[8], char buf[BUF_LEN], int *hold) | ||
235 | { | ||
236 | char *tok = strtok(buf, " "); | ||
237 | int mvt = 0; | ||
238 | int i = 0; | ||
239 | for (; tok != NULL; tok = strtok(NULL, " ")) { | ||
240 | |||
241 | if (strcmp(tok, "--quit") == 0) | ||
242 | return -1; | ||
243 | |||
244 | if (strcmp(tok, "--hold") == 0) { | ||
245 | *hold = 1; | ||
246 | continue; | ||
247 | } | ||
248 | |||
249 | for (i = 0; mmod[i].opt != NULL; i++) | ||
250 | if (strcmp(tok, mmod[i].opt) == 0) { | ||
251 | report[0] = report[0] | mmod[i].val; | ||
252 | break; | ||
253 | } | ||
254 | if (mmod[i].opt != NULL) | ||
255 | continue; | ||
256 | |||
257 | if (!(tok[0] == '-' && tok[1] == '-') && mvt < 2) { | ||
258 | errno = 0; | ||
259 | report[1 + mvt++] = (char)strtol(tok, NULL, 0); | ||
260 | if (errno != 0) { | ||
261 | fprintf(stderr, "Bad value:'%s'\n", tok); | ||
262 | report[1 + mvt--] = 0; | ||
263 | } | ||
264 | continue; | ||
265 | } | ||
266 | |||
267 | fprintf(stderr, "unknown option: %s\n", tok); | ||
268 | } | ||
269 | return 3; | ||
270 | } | ||
271 | |||
272 | static struct options jmod[] = { | ||
273 | {.opt = "--b1", .val = 0x10}, | ||
274 | {.opt = "--b2", .val = 0x20}, | ||
275 | {.opt = "--b3", .val = 0x40}, | ||
276 | {.opt = "--b4", .val = 0x80}, | ||
277 | {.opt = "--hat1", .val = 0x00}, | ||
278 | {.opt = "--hat2", .val = 0x01}, | ||
279 | {.opt = "--hat3", .val = 0x02}, | ||
280 | {.opt = "--hat4", .val = 0x03}, | ||
281 | {.opt = "--hatneutral", .val = 0x04}, | ||
282 | {.opt = NULL} | ||
283 | }; | ||
284 | |||
285 | int joystick_fill_report(char report[8], char buf[BUF_LEN], int *hold) | ||
286 | { | ||
287 | char *tok = strtok(buf, " "); | ||
288 | int mvt = 0; | ||
289 | int i = 0; | ||
290 | |||
291 | *hold = 1; | ||
292 | |||
293 | /* set default hat position: neutral */ | ||
294 | report[3] = 0x04; | ||
295 | |||
296 | for (; tok != NULL; tok = strtok(NULL, " ")) { | ||
297 | |||
298 | if (strcmp(tok, "--quit") == 0) | ||
299 | return -1; | ||
300 | |||
301 | for (i = 0; jmod[i].opt != NULL; i++) | ||
302 | if (strcmp(tok, jmod[i].opt) == 0) { | ||
303 | report[3] = (report[3] & 0xF0) | jmod[i].val; | ||
304 | break; | ||
305 | } | ||
306 | if (jmod[i].opt != NULL) | ||
307 | continue; | ||
308 | |||
309 | if (!(tok[0] == '-' && tok[1] == '-') && mvt < 3) { | ||
310 | errno = 0; | ||
311 | report[mvt++] = (char)strtol(tok, NULL, 0); | ||
312 | if (errno != 0) { | ||
313 | fprintf(stderr, "Bad value:'%s'\n", tok); | ||
314 | report[mvt--] = 0; | ||
315 | } | ||
316 | continue; | ||
317 | } | ||
318 | |||
319 | fprintf(stderr, "unknown option: %s\n", tok); | ||
320 | } | ||
321 | return 4; | ||
322 | } | ||
323 | |||
324 | void print_options(char c) | ||
325 | { | ||
326 | int i = 0; | ||
327 | |||
328 | if (c == 'k') { | ||
329 | printf(" keyboard options:\n" | ||
330 | " --hold\n"); | ||
331 | for (i = 0; kmod[i].opt != NULL; i++) | ||
332 | printf("\t\t%s\n", kmod[i].opt); | ||
333 | printf("\n keyboard values:\n" | ||
334 | " [a-z] or\n"); | ||
335 | for (i = 0; kval[i].opt != NULL; i++) | ||
336 | printf("\t\t%-8s%s", kval[i].opt, i % 2 ? "\n" : ""); | ||
337 | printf("\n"); | ||
338 | } else if (c == 'm') { | ||
339 | printf(" mouse options:\n" | ||
340 | " --hold\n"); | ||
341 | for (i = 0; mmod[i].opt != NULL; i++) | ||
342 | printf("\t\t%s\n", mmod[i].opt); | ||
343 | printf("\n mouse values:\n" | ||
344 | " Two signed numbers\n" | ||
345 | "--quit to close\n"); | ||
346 | } else { | ||
347 | printf(" joystick options:\n"); | ||
348 | for (i = 0; jmod[i].opt != NULL; i++) | ||
349 | printf("\t\t%s\n", jmod[i].opt); | ||
350 | printf("\n joystick values:\n" | ||
351 | " three signed numbers\n" | ||
352 | "--quit to close\n"); | ||
353 | } | ||
354 | } | ||
355 | |||
356 | int main(int argc, const char *argv[]) | ||
357 | { | ||
358 | const char *filename = NULL; | ||
359 | int fd = 0; | ||
360 | char buf[BUF_LEN]; | ||
361 | int cmd_len; | ||
362 | char report[8]; | ||
363 | int to_send = 8; | ||
364 | int hold = 0; | ||
365 | fd_set rfds; | ||
366 | int retval, i; | ||
367 | |||
368 | if (argc < 3) { | ||
369 | fprintf(stderr, "Usage: %s devname mouse|keyboard|joystick\n", | ||
370 | argv[0]); | ||
371 | return 1; | ||
372 | } | ||
373 | |||
374 | if (argv[2][0] != 'k' && argv[2][0] != 'm' && argv[2][0] != 'j') | ||
375 | return 2; | ||
376 | |||
377 | filename = argv[1]; | ||
378 | |||
379 | if ((fd = open(filename, O_RDWR, 0666)) == -1) { | ||
380 | perror(filename); | ||
381 | return 3; | ||
382 | } | ||
383 | |||
384 | print_options(argv[2][0]); | ||
385 | |||
386 | while (42) { | ||
387 | |||
388 | FD_ZERO(&rfds); | ||
389 | FD_SET(STDIN_FILENO, &rfds); | ||
390 | FD_SET(fd, &rfds); | ||
391 | |||
392 | retval = select(fd + 1, &rfds, NULL, NULL, NULL); | ||
393 | if (retval == -1 && errno == EINTR) | ||
394 | continue; | ||
395 | if (retval < 0) { | ||
396 | perror("select()"); | ||
397 | return 4; | ||
398 | } | ||
399 | |||
400 | if (FD_ISSET(fd, &rfds)) { | ||
401 | cmd_len = read(fd, buf, BUF_LEN - 1); | ||
402 | printf("recv report:"); | ||
403 | for (i = 0; i < cmd_len; i++) | ||
404 | printf(" %02x", buf[i]); | ||
405 | printf("\n"); | ||
406 | } | ||
407 | |||
408 | if (FD_ISSET(STDIN_FILENO, &rfds)) { | ||
409 | memset(report, 0x0, sizeof(report)); | ||
410 | cmd_len = read(STDIN_FILENO, buf, BUF_LEN - 1); | ||
411 | |||
412 | if (cmd_len == 0) | ||
413 | break; | ||
414 | |||
415 | buf[cmd_len - 1] = '\0'; | ||
416 | hold = 0; | ||
417 | |||
418 | memset(report, 0x0, sizeof(report)); | ||
419 | if (argv[2][0] == 'k') | ||
420 | to_send = keyboard_fill_report(report, buf, &hold); | ||
421 | else if (argv[2][0] == 'm') | ||
422 | to_send = mouse_fill_report(report, buf, &hold); | ||
423 | else | ||
424 | to_send = joystick_fill_report(report, buf, &hold); | ||
425 | |||
426 | if (to_send == -1) | ||
427 | break; | ||
428 | |||
429 | if (write(fd, report, to_send) != to_send) { | ||
430 | perror(filename); | ||
431 | return 5; | ||
432 | } | ||
433 | if (!hold) { | ||
434 | memset(report, 0x0, sizeof(report)); | ||
435 | if (write(fd, report, to_send) != to_send) { | ||
436 | perror(filename); | ||
437 | return 6; | ||
438 | } | ||
439 | } | ||
440 | } | ||
441 | } | ||
442 | |||
443 | close(fd); | ||
444 | return 0; | ||
445 | } | ||
diff --git a/Documentation/usb/power-management.txt b/Documentation/usb/power-management.txt index 2790ad48cfc2..b29d8e56cf28 100644 --- a/Documentation/usb/power-management.txt +++ b/Documentation/usb/power-management.txt | |||
@@ -107,7 +107,9 @@ allowed to issue dynamic suspends. | |||
107 | The user interface for controlling dynamic PM is located in the power/ | 107 | The user interface for controlling dynamic PM is located in the power/ |
108 | subdirectory of each USB device's sysfs directory, that is, in | 108 | subdirectory of each USB device's sysfs directory, that is, in |
109 | /sys/bus/usb/devices/.../power/ where "..." is the device's ID. The | 109 | /sys/bus/usb/devices/.../power/ where "..." is the device's ID. The |
110 | relevant attribute files are: wakeup, level, and autosuspend. | 110 | relevant attribute files are: wakeup, control, and autosuspend. |
111 | (There may also be a file named "level"; this file was deprecated | ||
112 | as of the 2.6.35 kernel and replaced by the "control" file.) | ||
111 | 113 | ||
112 | power/wakeup | 114 | power/wakeup |
113 | 115 | ||
@@ -120,7 +122,7 @@ relevant attribute files are: wakeup, level, and autosuspend. | |||
120 | while the device is suspended, the change won't take | 122 | while the device is suspended, the change won't take |
121 | effect until the following suspend.) | 123 | effect until the following suspend.) |
122 | 124 | ||
123 | power/level | 125 | power/control |
124 | 126 | ||
125 | This file contains one of two words: "on" or "auto". | 127 | This file contains one of two words: "on" or "auto". |
126 | You can write those words to the file to change the | 128 | You can write those words to the file to change the |
@@ -148,14 +150,15 @@ relevant attribute files are: wakeup, level, and autosuspend. | |||
148 | never to autosuspend. You can write a number to the | 150 | never to autosuspend. You can write a number to the |
149 | file to change the autosuspend idle-delay time. | 151 | file to change the autosuspend idle-delay time. |
150 | 152 | ||
151 | Writing "-1" to power/autosuspend and writing "on" to power/level do | 153 | Writing "-1" to power/autosuspend and writing "on" to power/control do |
152 | essentially the same thing -- they both prevent the device from being | 154 | essentially the same thing -- they both prevent the device from being |
153 | autosuspended. Yes, this is a redundancy in the API. | 155 | autosuspended. Yes, this is a redundancy in the API. |
154 | 156 | ||
155 | (In 2.6.21 writing "0" to power/autosuspend would prevent the device | 157 | (In 2.6.21 writing "0" to power/autosuspend would prevent the device |
156 | from being autosuspended; the behavior was changed in 2.6.22. The | 158 | from being autosuspended; the behavior was changed in 2.6.22. The |
157 | power/autosuspend attribute did not exist prior to 2.6.21, and the | 159 | power/autosuspend attribute did not exist prior to 2.6.21, and the |
158 | power/level attribute did not exist prior to 2.6.22.) | 160 | power/level attribute did not exist prior to 2.6.22. power/control |
161 | was added in 2.6.34.) | ||
159 | 162 | ||
160 | 163 | ||
161 | Changing the default idle-delay time | 164 | Changing the default idle-delay time |
@@ -212,7 +215,7 @@ among printers and scanners, but plenty of other types of device have | |||
212 | the same deficiency. | 215 | the same deficiency. |
213 | 216 | ||
214 | For this reason, by default the kernel disables autosuspend (the | 217 | For this reason, by default the kernel disables autosuspend (the |
215 | power/level attribute is initialized to "on") for all devices other | 218 | power/control attribute is initialized to "on") for all devices other |
216 | than hubs. Hubs, at least, appear to be reasonably well-behaved in | 219 | than hubs. Hubs, at least, appear to be reasonably well-behaved in |
217 | this regard. | 220 | this regard. |
218 | 221 | ||
@@ -373,7 +376,7 @@ usb_autopm_put_interface() in its close or release routine. But other | |||
373 | patterns are possible. | 376 | patterns are possible. |
374 | 377 | ||
375 | The autosuspend attempts mentioned above will often fail for one | 378 | The autosuspend attempts mentioned above will often fail for one |
376 | reason or another. For example, the power/level attribute might be | 379 | reason or another. For example, the power/control attribute might be |
377 | set to "on", or another interface in the same device might not be | 380 | set to "on", or another interface in the same device might not be |
378 | idle. This is perfectly normal. If the reason for failure was that | 381 | idle. This is perfectly normal. If the reason for failure was that |
379 | the device hasn't been idle for long enough, a timer is scheduled to | 382 | the device hasn't been idle for long enough, a timer is scheduled to |
@@ -394,12 +397,12 @@ Drivers can enable autosuspend for their devices by calling | |||
394 | 397 | ||
395 | in their probe() routine, if they know that the device is capable of | 398 | in their probe() routine, if they know that the device is capable of |
396 | suspending and resuming correctly. This is exactly equivalent to | 399 | suspending and resuming correctly. This is exactly equivalent to |
397 | writing "auto" to the device's power/level attribute. Likewise, | 400 | writing "auto" to the device's power/control attribute. Likewise, |
398 | drivers can disable autosuspend by calling | 401 | drivers can disable autosuspend by calling |
399 | 402 | ||
400 | usb_disable_autosuspend(struct usb_device *udev); | 403 | usb_disable_autosuspend(struct usb_device *udev); |
401 | 404 | ||
402 | This is exactly the same as writing "on" to the power/level attribute. | 405 | This is exactly the same as writing "on" to the power/control attribute. |
403 | 406 | ||
404 | Sometimes a driver needs to make sure that remote wakeup is enabled | 407 | Sometimes a driver needs to make sure that remote wakeup is enabled |
405 | during autosuspend. For example, there's not much point | 408 | during autosuspend. For example, there's not much point |
diff --git a/Documentation/usb/usb-serial.txt b/Documentation/usb/usb-serial.txt index ff2c1ff57ba2..f4d214510259 100644 --- a/Documentation/usb/usb-serial.txt +++ b/Documentation/usb/usb-serial.txt | |||
@@ -194,6 +194,10 @@ FTDI Single Port Serial Driver | |||
194 | 194 | ||
195 | This is a single port DB-25 serial adapter. | 195 | This is a single port DB-25 serial adapter. |
196 | 196 | ||
197 | Devices supported include: | ||
198 | -TripNav TN-200 USB GPS | ||
199 | -Navis Engineering Bureau CH-4711 USB GPS | ||
200 | |||
197 | For any questions or problems with this driver, please contact Bill Ryder. | 201 | For any questions or problems with this driver, please contact Bill Ryder. |
198 | 202 | ||
199 | 203 | ||
@@ -216,7 +220,7 @@ Cypress M8 CY4601 Family Serial Driver | |||
216 | 220 | ||
217 | Devices supported: | 221 | Devices supported: |
218 | 222 | ||
219 | -DeLorme's USB Earthmate (SiRF Star II lp arch) | 223 | -DeLorme's USB Earthmate GPS (SiRF Star II lp arch) |
220 | -Cypress HID->COM RS232 adapter | 224 | -Cypress HID->COM RS232 adapter |
221 | 225 | ||
222 | Note: Cypress Semiconductor claims no affiliation with the | 226 | Note: Cypress Semiconductor claims no affiliation with the |
@@ -392,9 +396,10 @@ REINER SCT cyberJack pinpad/e-com USB chipcard reader | |||
392 | Prolific PL2303 Driver | 396 | Prolific PL2303 Driver |
393 | 397 | ||
394 | This driver supports any device that has the PL2303 chip from Prolific | 398 | This driver supports any device that has the PL2303 chip from Prolific |
395 | in it. This includes a number of single port USB to serial | 399 | in it. This includes a number of single port USB to serial converters, |
396 | converters and USB GPS devices. Devices from Aten (the UC-232) and | 400 | more than 70% of USB GPS devices (in 2010), and some USB UPSes. Devices |
397 | IO-Data work with this driver, as does the DCU-11 mobile-phone cable. | 401 | from Aten (the UC-232) and IO-Data work with this driver, as does |
402 | the DCU-11 mobile-phone cable. | ||
398 | 403 | ||
399 | For any questions or problems with this driver, please contact Greg | 404 | For any questions or problems with this driver, please contact Greg |
400 | Kroah-Hartman at greg@kroah.com | 405 | Kroah-Hartman at greg@kroah.com |
@@ -435,6 +440,22 @@ Winchiphead CH341 Driver | |||
435 | For any questions or problems with this driver, please contact | 440 | For any questions or problems with this driver, please contact |
436 | frank@kingswood-consulting.co.uk. | 441 | frank@kingswood-consulting.co.uk. |
437 | 442 | ||
443 | Moschip MCS7720, MCS7715 driver | ||
444 | |||
445 | These chips are present in devices sold by various manufacturers, such as Syba | ||
446 | and Cables Unlimited. There may be others. The 7720 provides two serial | ||
447 | ports, and the 7715 provides one serial and one standard PC parallel port. | ||
448 | Support for the 7715's parallel port is enabled by a separate option, which | ||
449 | will not appear unless parallel port support is first enabled at the top-level | ||
450 | of the Device Drivers config menu. Currently only compatibility mode is | ||
451 | supported on the parallel port (no ECP/EPP). | ||
452 | |||
453 | TODO: | ||
454 | - Implement ECP/EPP modes for the parallel port. | ||
455 | - Baud rates higher than 115200 are currently broken. | ||
456 | - Devices with a single serial port based on the Moschip MCS7703 may work | ||
457 | with this driver with a simple addition to the usb_device_id table. I | ||
458 | don't have one of these devices, so I can't say for sure. | ||
438 | 459 | ||
439 | Generic Serial driver | 460 | Generic Serial driver |
440 | 461 | ||