diff options
author | Dean Anderson <dean@sensoray.com> | 2008-06-26 22:15:51 -0400 |
---|---|---|
committer | Mauro Carvalho Chehab <mchehab@infradead.org> | 2008-07-20 06:12:59 -0400 |
commit | 38f993ad8b1fe4caf9e989caf6e2a25aff3bbaf7 (patch) | |
tree | 829d3ba2e469d42e101bc90384bb3d10630972da /drivers | |
parent | bfda3a0b3276cda7f2da1dcd98bd060b60954cbb (diff) |
V4L/DVB (8125): This driver adds support for the Sensoray 2255 devices.
It was primarily developed by Dean Anderson with only a little bit of
guidance and cleanup by Greg.
Signed-off-by: Dean Anderson <dean@sensoray.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
[mchehab@infradead.org: fixed renamed callbacks]
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/media/video/Kconfig | 9 | ||||
-rw-r--r-- | drivers/media/video/Makefile | 1 | ||||
-rw-r--r-- | drivers/media/video/s2255drv.c | 2486 |
3 files changed, 2496 insertions, 0 deletions
diff --git a/drivers/media/video/Kconfig b/drivers/media/video/Kconfig index 5ccb0aeca8cc..8fca90b75e79 100644 --- a/drivers/media/video/Kconfig +++ b/drivers/media/video/Kconfig | |||
@@ -905,6 +905,15 @@ config USB_STKWEBCAM | |||
905 | To compile this driver as a module, choose M here: the | 905 | To compile this driver as a module, choose M here: the |
906 | module will be called stkwebcam. | 906 | module will be called stkwebcam. |
907 | 907 | ||
908 | config USB_S2255 | ||
909 | tristate "USB Sensoray 2255 video capture device" | ||
910 | depends on VIDEO_V4L2 | ||
911 | select VIDEOBUF_VMALLOC | ||
912 | default n | ||
913 | help | ||
914 | Say Y here if you want support for the Sensoray 2255 USB device. | ||
915 | This driver can be compiled as a module, called s2255drv. | ||
916 | |||
908 | endif # V4L_USB_DRIVERS | 917 | endif # V4L_USB_DRIVERS |
909 | 918 | ||
910 | config SOC_CAMERA | 919 | config SOC_CAMERA |
diff --git a/drivers/media/video/Makefile b/drivers/media/video/Makefile index ecbbfaab24d5..2ec920dc32e0 100644 --- a/drivers/media/video/Makefile +++ b/drivers/media/video/Makefile | |||
@@ -122,6 +122,7 @@ obj-$(CONFIG_USB_IBMCAM) += usbvideo/ | |||
122 | obj-$(CONFIG_USB_KONICAWC) += usbvideo/ | 122 | obj-$(CONFIG_USB_KONICAWC) += usbvideo/ |
123 | obj-$(CONFIG_USB_VICAM) += usbvideo/ | 123 | obj-$(CONFIG_USB_VICAM) += usbvideo/ |
124 | obj-$(CONFIG_USB_QUICKCAM_MESSENGER) += usbvideo/ | 124 | obj-$(CONFIG_USB_QUICKCAM_MESSENGER) += usbvideo/ |
125 | obj-$(CONFIG_USB_S2255) += s2255drv.o | ||
125 | 126 | ||
126 | obj-$(CONFIG_VIDEO_IVTV) += ivtv/ | 127 | obj-$(CONFIG_VIDEO_IVTV) += ivtv/ |
127 | obj-$(CONFIG_VIDEO_CX18) += cx18/ | 128 | obj-$(CONFIG_VIDEO_CX18) += cx18/ |
diff --git a/drivers/media/video/s2255drv.c b/drivers/media/video/s2255drv.c new file mode 100644 index 000000000000..6d5fbad95c29 --- /dev/null +++ b/drivers/media/video/s2255drv.c | |||
@@ -0,0 +1,2486 @@ | |||
1 | /* | ||
2 | * s2255drv.c - a driver for the Sensoray 2255 USB video capture device | ||
3 | * | ||
4 | * Copyright (C) 2007-2008 by Sensoray Company Inc. | ||
5 | * Dean Anderson | ||
6 | * | ||
7 | * Some video buffer code based on vivi driver: | ||
8 | * | ||
9 | * Sensoray 2255 device supports 4 simultaneous channels. | ||
10 | * The channels are not "crossbar" inputs, they are physically | ||
11 | * attached to separate video decoders. | ||
12 | * | ||
13 | * Because of USB2.0 bandwidth limitations. There is only a | ||
14 | * certain amount of data which may be transferred at one time. | ||
15 | * | ||
16 | * Example maximum bandwidth utilization: | ||
17 | * | ||
18 | * -full size, color mode YUYV or YUV422P: 2 channels at once | ||
19 | * | ||
20 | * -full or half size Grey scale: all 4 channels at once | ||
21 | * | ||
22 | * -half size, color mode YUYV or YUV422P: all 4 channels at once | ||
23 | * | ||
24 | * -full size, color mode YUYV or YUV422P 1/2 frame rate: all 4 channels | ||
25 | * at once. | ||
26 | * (TODO: Incorporate videodev2 frame rate(FR) enumeration, | ||
27 | * which is currently experimental.) | ||
28 | * | ||
29 | * This program is free software; you can redistribute it and/or modify | ||
30 | * it under the terms of the GNU General Public License as published by | ||
31 | * the Free Software Foundation; either version 2 of the License, or | ||
32 | * (at your option) any later version. | ||
33 | * | ||
34 | * This program is distributed in the hope that it will be useful, | ||
35 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
36 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
37 | * GNU General Public License for more details. | ||
38 | * | ||
39 | * You should have received a copy of the GNU General Public License | ||
40 | * along with this program; if not, write to the Free Software | ||
41 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | ||
42 | */ | ||
43 | |||
44 | #include <linux/module.h> | ||
45 | #include <linux/firmware.h> | ||
46 | #include <linux/kernel.h> | ||
47 | #include <linux/mutex.h> | ||
48 | #include <linux/videodev2.h> | ||
49 | #include <linux/version.h> | ||
50 | #include <media/videobuf-vmalloc.h> | ||
51 | #include <media/v4l2-common.h> | ||
52 | #include <linux/vmalloc.h> | ||
53 | #include <linux/usb.h> | ||
54 | |||
55 | #define FIRMWARE_FILE_NAME "f2255usb.bin" | ||
56 | |||
57 | |||
58 | |||
59 | /* vendor request in */ | ||
60 | #define S2255_VR_IN 0 | ||
61 | /* vendor request out */ | ||
62 | #define S2255_VR_OUT 1 | ||
63 | /* firmware query */ | ||
64 | #define S2255_VR_FW 0x30 | ||
65 | /* USB endpoint number for configuring the device */ | ||
66 | #define S2255_CONFIG_EP 2 | ||
67 | /* maximum time for DSP to start responding after last FW word loaded(ms) */ | ||
68 | #define S2255_DSP_BOOTTIME 400 | ||
69 | /* maximum time to wait for firmware to load (ms) */ | ||
70 | #define S2255_LOAD_TIMEOUT (5000+S2255_DSP_BOOTTIME) | ||
71 | #define S2255_DEF_BUFS 16 | ||
72 | #define MAX_CHANNELS 4 | ||
73 | #define FRAME_MARKER 0x2255DA4AL | ||
74 | #define MAX_PIPE_USBBLOCK (40*1024) | ||
75 | #define DEFAULT_PIPE_USBBLOCK (16*1024) | ||
76 | #define MAX_CHANNELS 4 | ||
77 | #define MAX_PIPE_BUFFERS 1 | ||
78 | #define SYS_FRAMES 4 | ||
79 | /* maximum size is PAL full size plus room for the marker header(s) */ | ||
80 | #define SYS_FRAMES_MAXSIZE (720*288*2*2 + 4096) | ||
81 | #define DEF_USB_BLOCK (4096) | ||
82 | #define LINE_SZ_4CIFS_NTSC 640 | ||
83 | #define LINE_SZ_2CIFS_NTSC 640 | ||
84 | #define LINE_SZ_1CIFS_NTSC 320 | ||
85 | #define LINE_SZ_4CIFS_PAL 704 | ||
86 | #define LINE_SZ_2CIFS_PAL 704 | ||
87 | #define LINE_SZ_1CIFS_PAL 352 | ||
88 | #define NUM_LINES_4CIFS_NTSC 240 | ||
89 | #define NUM_LINES_2CIFS_NTSC 240 | ||
90 | #define NUM_LINES_1CIFS_NTSC 240 | ||
91 | #define NUM_LINES_4CIFS_PAL 288 | ||
92 | #define NUM_LINES_2CIFS_PAL 288 | ||
93 | #define NUM_LINES_1CIFS_PAL 288 | ||
94 | #define LINE_SZ_DEF 640 | ||
95 | #define NUM_LINES_DEF 240 | ||
96 | |||
97 | |||
98 | /* predefined settings */ | ||
99 | #define FORMAT_NTSC 1 | ||
100 | #define FORMAT_PAL 2 | ||
101 | |||
102 | #define SCALE_4CIFS 1 /* 640x480(NTSC) or 704x576(PAL) */ | ||
103 | #define SCALE_2CIFS 2 /* 640x240(NTSC) or 704x288(PAL) */ | ||
104 | #define SCALE_1CIFS 3 /* 320x240(NTSC) or 352x288(PAL) */ | ||
105 | |||
106 | #define COLOR_YUVPL 1 /* YUV planar */ | ||
107 | #define COLOR_YUVPK 2 /* YUV packed */ | ||
108 | #define COLOR_Y8 4 /* monochrome */ | ||
109 | |||
110 | /* frame decimation. Not implemented by V4L yet(experimental in V4L) */ | ||
111 | #define FDEC_1 1 /* capture every frame. default */ | ||
112 | #define FDEC_2 2 /* capture every 2nd frame */ | ||
113 | #define FDEC_3 3 /* capture every 3rd frame */ | ||
114 | #define FDEC_5 5 /* capture every 5th frame */ | ||
115 | |||
116 | /*------------------------------------------------------- | ||
117 | * Default mode parameters. | ||
118 | *-------------------------------------------------------*/ | ||
119 | #define DEF_SCALE SCALE_4CIFS | ||
120 | #define DEF_COLOR COLOR_YUVPL | ||
121 | #define DEF_FDEC FDEC_1 | ||
122 | #define DEF_BRIGHT 0 | ||
123 | #define DEF_CONTRAST 0x5c | ||
124 | #define DEF_SATURATION 0x80 | ||
125 | #define DEF_HUE 0 | ||
126 | |||
127 | /* usb config commands */ | ||
128 | #define IN_DATA_TOKEN 0x2255c0de | ||
129 | #define CMD_2255 0xc2255000 | ||
130 | #define CMD_SET_MODE (CMD_2255 | 0x10) | ||
131 | #define CMD_START (CMD_2255 | 0x20) | ||
132 | #define CMD_STOP (CMD_2255 | 0x30) | ||
133 | #define CMD_STATUS (CMD_2255 | 0x40) | ||
134 | |||
135 | struct s2255_mode { | ||
136 | u32 format; /* input video format (NTSC, PAL) */ | ||
137 | u32 scale; /* output video scale */ | ||
138 | u32 color; /* output video color format */ | ||
139 | u32 fdec; /* frame decimation */ | ||
140 | u32 bright; /* brightness */ | ||
141 | u32 contrast; /* contrast */ | ||
142 | u32 saturation; /* saturation */ | ||
143 | u32 hue; /* hue (NTSC only)*/ | ||
144 | u32 single; /* capture 1 frame at a time (!=0), continuously (==0)*/ | ||
145 | u32 usb_block; /* block size. should be 4096 of DEF_USB_BLOCK */ | ||
146 | u32 restart; /* if DSP requires restart */ | ||
147 | }; | ||
148 | |||
149 | /* frame structure */ | ||
150 | #define FRAME_STATE_UNUSED 0 | ||
151 | #define FRAME_STATE_FILLING 1 | ||
152 | #define FRAME_STATE_FULL 2 | ||
153 | |||
154 | |||
155 | struct s2255_framei { | ||
156 | unsigned long size; | ||
157 | |||
158 | unsigned long ulState; /* ulState ==0 unused, 1 being filled, 2 full */ | ||
159 | void *lpvbits; /* image data */ | ||
160 | unsigned long cur_size; /* current data copied to it */ | ||
161 | }; | ||
162 | |||
163 | /* image buffer structure */ | ||
164 | struct s2255_bufferi { | ||
165 | unsigned long dwFrames; /* number of frames in buffer */ | ||
166 | struct s2255_framei frame[SYS_FRAMES]; /* array of FRAME structures */ | ||
167 | }; | ||
168 | |||
169 | #define DEF_MODEI_NTSC_CONT {FORMAT_NTSC, DEF_SCALE, DEF_COLOR, \ | ||
170 | DEF_FDEC, DEF_BRIGHT, DEF_CONTRAST, DEF_SATURATION, \ | ||
171 | DEF_HUE, 0, DEF_USB_BLOCK, 0 } | ||
172 | |||
173 | struct s2255_dmaqueue { | ||
174 | struct list_head active; | ||
175 | /* thread for acquisition */ | ||
176 | struct task_struct *kthread; | ||
177 | int frame; | ||
178 | struct s2255_dev *dev; | ||
179 | int channel; | ||
180 | }; | ||
181 | |||
182 | /* for firmware loading, fw_state */ | ||
183 | #define S2255_FW_NOTLOADED 0 | ||
184 | #define S2255_FW_LOADED_DSPWAIT 1 | ||
185 | #define S2255_FW_SUCCESS 2 | ||
186 | #define S2255_FW_FAILED 3 | ||
187 | |||
188 | struct s2255_fw { | ||
189 | int fw_loaded; | ||
190 | int fw_size; | ||
191 | struct urb *fw_urb; | ||
192 | atomic_t fw_state; | ||
193 | void *pfw_data; | ||
194 | wait_queue_head_t wait_fw; | ||
195 | struct timer_list dsp_wait; | ||
196 | const struct firmware *fw; | ||
197 | }; | ||
198 | |||
199 | struct s2255_pipeinfo { | ||
200 | u32 max_transfer_size; | ||
201 | u32 cur_transfer_size; | ||
202 | u8 *transfer_buffer; | ||
203 | u32 transfer_flags;; | ||
204 | u32 state; | ||
205 | u32 prev_state; | ||
206 | u32 urb_size; | ||
207 | void *stream_urb; | ||
208 | void *dev; /* back pointer to s2255_dev struct*/ | ||
209 | u32 err_count; | ||
210 | u32 buf_index; | ||
211 | u32 idx; | ||
212 | u32 priority_set; | ||
213 | }; | ||
214 | |||
215 | struct s2255_fmt; /*forward declaration */ | ||
216 | |||
217 | struct s2255_dev { | ||
218 | int frames; | ||
219 | int users[MAX_CHANNELS]; | ||
220 | struct mutex lock; | ||
221 | struct mutex open_lock; | ||
222 | int resources[MAX_CHANNELS]; | ||
223 | struct usb_device *udev; | ||
224 | struct usb_interface *interface; | ||
225 | u8 read_endpoint; | ||
226 | |||
227 | struct s2255_dmaqueue vidq[MAX_CHANNELS]; | ||
228 | struct video_device *vdev[MAX_CHANNELS]; | ||
229 | struct list_head s2255_devlist; | ||
230 | struct timer_list timer; | ||
231 | struct s2255_fw *fw_data; | ||
232 | int board_num; | ||
233 | int is_open; | ||
234 | struct s2255_pipeinfo pipes[MAX_PIPE_BUFFERS]; | ||
235 | struct s2255_bufferi buffer[MAX_CHANNELS]; | ||
236 | struct s2255_mode mode[MAX_CHANNELS]; | ||
237 | const struct s2255_fmt *cur_fmt[MAX_CHANNELS]; | ||
238 | int cur_frame[MAX_CHANNELS]; | ||
239 | int last_frame[MAX_CHANNELS]; | ||
240 | u32 cc; /* current channel */ | ||
241 | int b_acquire[MAX_CHANNELS]; | ||
242 | unsigned long req_image_size[MAX_CHANNELS]; | ||
243 | int bad_payload[MAX_CHANNELS]; | ||
244 | unsigned long frame_count[MAX_CHANNELS]; | ||
245 | int frame_ready; | ||
246 | struct kref kref; | ||
247 | spinlock_t slock; | ||
248 | }; | ||
249 | #define to_s2255_dev(d) container_of(d, struct s2255_dev, kref) | ||
250 | |||
251 | struct s2255_fmt { | ||
252 | char *name; | ||
253 | u32 fourcc; | ||
254 | int depth; | ||
255 | }; | ||
256 | |||
257 | /* buffer for one video frame */ | ||
258 | struct s2255_buffer { | ||
259 | /* common v4l buffer stuff -- must be first */ | ||
260 | struct videobuf_buffer vb; | ||
261 | const struct s2255_fmt *fmt; | ||
262 | }; | ||
263 | |||
264 | struct s2255_fh { | ||
265 | struct s2255_dev *dev; | ||
266 | unsigned int resources; | ||
267 | const struct s2255_fmt *fmt; | ||
268 | unsigned int width; | ||
269 | unsigned int height; | ||
270 | struct videobuf_queue vb_vidq; | ||
271 | enum v4l2_buf_type type; | ||
272 | int channel; | ||
273 | /* mode below is the desired mode. | ||
274 | mode in s2255_dev is the current mode that was last set */ | ||
275 | struct s2255_mode mode; | ||
276 | }; | ||
277 | |||
278 | #define S2255_MAX_USERS 1 | ||
279 | |||
280 | #define CUR_USB_FWVER 774 /* current cypress EEPROM firmware version */ | ||
281 | #define S2255_MAJOR_VERSION 1 | ||
282 | #define S2255_MINOR_VERSION 13 | ||
283 | #define S2255_RELEASE 0 | ||
284 | #define S2255_VERSION KERNEL_VERSION(S2255_MAJOR_VERSION, \ | ||
285 | S2255_MINOR_VERSION, \ | ||
286 | S2255_RELEASE) | ||
287 | |||
288 | /* vendor ids */ | ||
289 | #define USB_S2255_VENDOR_ID 0x1943 | ||
290 | #define USB_S2255_PRODUCT_ID 0x2255 | ||
291 | #define S2255_NORMS (V4L2_STD_PAL | V4L2_STD_NTSC) | ||
292 | /* frame prefix size (sent once every frame) */ | ||
293 | #define PREFIX_SIZE 512 | ||
294 | |||
295 | /* Channels on box are in reverse order */ | ||
296 | static unsigned long G_chnmap[MAX_CHANNELS] = { 3, 2, 1, 0 }; | ||
297 | |||
298 | static LIST_HEAD(s2255_devlist); | ||
299 | |||
300 | static int debug; | ||
301 | static int *s2255_debug = &debug; | ||
302 | |||
303 | static int s2255_start_readpipe(struct s2255_dev *dev); | ||
304 | static void s2255_stop_readpipe(struct s2255_dev *dev); | ||
305 | static int s2255_start_acquire(struct s2255_dev *dev, unsigned long chn); | ||
306 | static int s2255_stop_acquire(struct s2255_dev *dev, unsigned long chn); | ||
307 | static void s2255_fillbuff(struct s2255_dev *dev, struct s2255_buffer *buf, | ||
308 | int chn); | ||
309 | static int s2255_set_mode(struct s2255_dev *dev, unsigned long chn, | ||
310 | struct s2255_mode *mode); | ||
311 | static int s2255_board_shutdown(struct s2255_dev *dev); | ||
312 | static void s2255_exit_v4l(struct s2255_dev *dev); | ||
313 | static void s2255_fwload_start(struct s2255_dev *dev); | ||
314 | |||
315 | #define dprintk(level, fmt, arg...) \ | ||
316 | do { \ | ||
317 | if (*s2255_debug >= (level)) { \ | ||
318 | printk(KERN_DEBUG "s2255: " fmt, ##arg); \ | ||
319 | } \ | ||
320 | } while (0) | ||
321 | |||
322 | |||
323 | static struct usb_driver s2255_driver; | ||
324 | |||
325 | |||
326 | /* Declare static vars that will be used as parameters */ | ||
327 | static unsigned int vid_limit = 16; /* Video memory limit, in Mb */ | ||
328 | |||
329 | /* start video number */ | ||
330 | static int video_nr = -1; /* /dev/videoN, -1 for autodetect */ | ||
331 | |||
332 | module_param(debug, int, 0); | ||
333 | MODULE_PARM_DESC(debug, "Debug level(0-100) default 0"); | ||
334 | module_param(vid_limit, int, 0); | ||
335 | MODULE_PARM_DESC(vid_limit, "video memory limit(Mb)"); | ||
336 | module_param(video_nr, int, 0); | ||
337 | MODULE_PARM_DESC(video_nr, "start video minor(-1 default autodetect)"); | ||
338 | |||
339 | /* USB device table */ | ||
340 | static struct usb_device_id s2255_table[] = { | ||
341 | {USB_DEVICE(USB_S2255_VENDOR_ID, USB_S2255_PRODUCT_ID)}, | ||
342 | { } /* Terminating entry */ | ||
343 | }; | ||
344 | MODULE_DEVICE_TABLE(usb, s2255_table); | ||
345 | |||
346 | |||
347 | #define BUFFER_TIMEOUT msecs_to_jiffies(400) | ||
348 | |||
349 | /* supported controls */ | ||
350 | static struct v4l2_queryctrl s2255_qctrl[] = { | ||
351 | { | ||
352 | .id = V4L2_CID_BRIGHTNESS, | ||
353 | .type = V4L2_CTRL_TYPE_INTEGER, | ||
354 | .name = "Brightness", | ||
355 | .minimum = -127, | ||
356 | .maximum = 128, | ||
357 | .step = 1, | ||
358 | .default_value = 0, | ||
359 | .flags = 0, | ||
360 | }, { | ||
361 | .id = V4L2_CID_CONTRAST, | ||
362 | .type = V4L2_CTRL_TYPE_INTEGER, | ||
363 | .name = "Contrast", | ||
364 | .minimum = 0, | ||
365 | .maximum = 255, | ||
366 | .step = 0x1, | ||
367 | .default_value = DEF_CONTRAST, | ||
368 | .flags = 0, | ||
369 | }, { | ||
370 | .id = V4L2_CID_SATURATION, | ||
371 | .type = V4L2_CTRL_TYPE_INTEGER, | ||
372 | .name = "Saturation", | ||
373 | .minimum = 0, | ||
374 | .maximum = 255, | ||
375 | .step = 0x1, | ||
376 | .default_value = DEF_SATURATION, | ||
377 | .flags = 0, | ||
378 | }, { | ||
379 | .id = V4L2_CID_HUE, | ||
380 | .type = V4L2_CTRL_TYPE_INTEGER, | ||
381 | .name = "Hue", | ||
382 | .minimum = 0, | ||
383 | .maximum = 255, | ||
384 | .step = 0x1, | ||
385 | .default_value = DEF_HUE, | ||
386 | .flags = 0, | ||
387 | } | ||
388 | }; | ||
389 | |||
390 | static int qctl_regs[ARRAY_SIZE(s2255_qctrl)]; | ||
391 | |||
392 | /* image formats. */ | ||
393 | static const struct s2255_fmt formats[] = { | ||
394 | { | ||
395 | .name = "4:2:2, planar, YUV422P", | ||
396 | .fourcc = V4L2_PIX_FMT_YUV422P, | ||
397 | .depth = 16 | ||
398 | |||
399 | }, { | ||
400 | .name = "4:2:2, packed, YUYV", | ||
401 | .fourcc = V4L2_PIX_FMT_YUYV, | ||
402 | .depth = 16 | ||
403 | |||
404 | }, { | ||
405 | .name = "4:2:2, packed, UYVY", | ||
406 | .fourcc = V4L2_PIX_FMT_UYVY, | ||
407 | .depth = 16 | ||
408 | }, { | ||
409 | .name = "8bpp GREY", | ||
410 | .fourcc = V4L2_PIX_FMT_GREY, | ||
411 | .depth = 8 | ||
412 | } | ||
413 | }; | ||
414 | |||
415 | static int norm_maxw(struct video_device *vdev) | ||
416 | { | ||
417 | return (vdev->current_norm & V4L2_STD_NTSC) ? | ||
418 | LINE_SZ_4CIFS_NTSC : LINE_SZ_4CIFS_PAL; | ||
419 | } | ||
420 | |||
421 | static int norm_maxh(struct video_device *vdev) | ||
422 | { | ||
423 | return (vdev->current_norm & V4L2_STD_NTSC) ? | ||
424 | (NUM_LINES_1CIFS_NTSC * 2) : (NUM_LINES_1CIFS_PAL * 2); | ||
425 | } | ||
426 | |||
427 | static int norm_minw(struct video_device *vdev) | ||
428 | { | ||
429 | return (vdev->current_norm & V4L2_STD_NTSC) ? | ||
430 | LINE_SZ_1CIFS_NTSC : LINE_SZ_1CIFS_PAL; | ||
431 | } | ||
432 | |||
433 | static int norm_minh(struct video_device *vdev) | ||
434 | { | ||
435 | return (vdev->current_norm & V4L2_STD_NTSC) ? | ||
436 | (NUM_LINES_1CIFS_NTSC) : (NUM_LINES_1CIFS_PAL); | ||
437 | } | ||
438 | |||
439 | |||
440 | /* converts 2255 planar format to yuyv or uyvy */ | ||
441 | static void planar422p_to_yuv_packed(const unsigned char *in, | ||
442 | unsigned char *out, | ||
443 | int width, int height, | ||
444 | int fmt) | ||
445 | { | ||
446 | unsigned char *pY; | ||
447 | unsigned char *pCb; | ||
448 | unsigned char *pCr; | ||
449 | unsigned long size = height * width; | ||
450 | unsigned int i; | ||
451 | pY = (unsigned char *)in; | ||
452 | pCr = (unsigned char *)in + height * width; | ||
453 | pCb = (unsigned char *)in + height * width + (height * width / 2); | ||
454 | for (i = 0; i < size * 2; i += 4) { | ||
455 | out[i] = (fmt == V4L2_PIX_FMT_YUYV) ? *pY++ : *pCr++; | ||
456 | out[i + 1] = (fmt == V4L2_PIX_FMT_YUYV) ? *pCr++ : *pY++; | ||
457 | out[i + 2] = (fmt == V4L2_PIX_FMT_YUYV) ? *pY++ : *pCb++; | ||
458 | out[i + 3] = (fmt == V4L2_PIX_FMT_YUYV) ? *pCb++ : *pY++; | ||
459 | } | ||
460 | return; | ||
461 | } | ||
462 | |||
463 | |||
464 | /* kickstarts the firmware loading. from probe | ||
465 | */ | ||
466 | static void s2255_timer(unsigned long user_data) | ||
467 | { | ||
468 | struct s2255_fw *data = (struct s2255_fw *)user_data; | ||
469 | dprintk(100, "s2255 timer\n"); | ||
470 | if (usb_submit_urb(data->fw_urb, GFP_ATOMIC) < 0) { | ||
471 | printk(KERN_ERR "s2255: can't submit urb\n"); | ||
472 | if (data->fw) { | ||
473 | release_firmware(data->fw); | ||
474 | data->fw = NULL; | ||
475 | } | ||
476 | return; | ||
477 | } | ||
478 | } | ||
479 | |||
480 | /* called when DSP is up and running. DSP is guaranteed to | ||
481 | be running after S2255_DSP_BOOTTIME */ | ||
482 | static void s2255_dsp_running(unsigned long user_data) | ||
483 | { | ||
484 | struct s2255_fw *data = (struct s2255_fw *)user_data; | ||
485 | dprintk(1, "dsp running\n"); | ||
486 | atomic_set(&data->fw_state, S2255_FW_SUCCESS); | ||
487 | wake_up(&data->wait_fw); | ||
488 | printk(KERN_INFO "s2255: firmware loaded successfully\n"); | ||
489 | return; | ||
490 | } | ||
491 | |||
492 | |||
493 | /* this loads the firmware asynchronously. | ||
494 | Originally this was done synchroously in probe. | ||
495 | But it is better to load it asynchronously here than block | ||
496 | inside the probe function. Blocking inside probe affects boot time. | ||
497 | FW loading is triggered by the timer in the probe function | ||
498 | */ | ||
499 | static void s2255_fwchunk_complete(struct urb *urb) | ||
500 | { | ||
501 | struct s2255_fw *data = urb->context; | ||
502 | struct usb_device *udev = urb->dev; | ||
503 | int len; | ||
504 | dprintk(100, "udev %p urb %p", udev, urb); | ||
505 | |||
506 | if (urb->status) { | ||
507 | dev_err(&udev->dev, "URB failed with status %d", urb->status); | ||
508 | return; | ||
509 | } | ||
510 | if (data->fw_urb == NULL) { | ||
511 | dev_err(&udev->dev, "early disconncect\n"); | ||
512 | return; | ||
513 | } | ||
514 | #define CHUNK_SIZE 512 | ||
515 | /* all USB transfers must be done with continuous kernel memory. | ||
516 | can't allocate more than 128k in current linux kernel, so | ||
517 | upload the firmware in chunks | ||
518 | */ | ||
519 | if (data->fw_loaded < data->fw_size) { | ||
520 | len = (data->fw_loaded + CHUNK_SIZE) > data->fw_size ? | ||
521 | data->fw_size % CHUNK_SIZE : CHUNK_SIZE; | ||
522 | |||
523 | if (len < CHUNK_SIZE) | ||
524 | memset(data->pfw_data, 0, CHUNK_SIZE); | ||
525 | |||
526 | dprintk(100, "completed len %d, loaded %d \n", len, | ||
527 | data->fw_loaded); | ||
528 | |||
529 | memcpy(data->pfw_data, | ||
530 | (char *) data->fw->data + data->fw_loaded, len); | ||
531 | |||
532 | usb_fill_bulk_urb(data->fw_urb, udev, usb_sndbulkpipe(udev, 2), | ||
533 | data->pfw_data, CHUNK_SIZE, | ||
534 | s2255_fwchunk_complete, data); | ||
535 | if (usb_submit_urb(data->fw_urb, GFP_ATOMIC) < 0) { | ||
536 | dev_err(&udev->dev, "failed submit URB\n"); | ||
537 | atomic_set(&data->fw_state, S2255_FW_FAILED); | ||
538 | /* wake up anything waiting for the firmware */ | ||
539 | wake_up(&data->wait_fw); | ||
540 | return; | ||
541 | } | ||
542 | data->fw_loaded += len; | ||
543 | } else { | ||
544 | init_timer(&data->dsp_wait); | ||
545 | data->dsp_wait.function = s2255_dsp_running; | ||
546 | data->dsp_wait.data = (unsigned long)data; | ||
547 | atomic_set(&data->fw_state, S2255_FW_LOADED_DSPWAIT); | ||
548 | mod_timer(&data->dsp_wait, msecs_to_jiffies(S2255_DSP_BOOTTIME) | ||
549 | + jiffies); | ||
550 | } | ||
551 | dprintk(100, "2255 complete done\n"); | ||
552 | return; | ||
553 | |||
554 | } | ||
555 | |||
556 | static int s2255_got_frame(struct s2255_dev *dev, int chn) | ||
557 | { | ||
558 | struct s2255_dmaqueue *dma_q = &dev->vidq[chn]; | ||
559 | struct s2255_buffer *buf; | ||
560 | unsigned long flags = 0; | ||
561 | int rc = 0; | ||
562 | dprintk(2, "wakeup: %p channel: %d\n", &dma_q, chn); | ||
563 | spin_lock_irqsave(&dev->slock, flags); | ||
564 | |||
565 | if (list_empty(&dma_q->active)) { | ||
566 | dprintk(1, "No active queue to serve\n"); | ||
567 | rc = -1; | ||
568 | goto unlock; | ||
569 | } | ||
570 | buf = list_entry(dma_q->active.next, | ||
571 | struct s2255_buffer, vb.queue); | ||
572 | |||
573 | if (!waitqueue_active(&buf->vb.done)) { | ||
574 | /* no one active */ | ||
575 | rc = -1; | ||
576 | goto unlock; | ||
577 | } | ||
578 | list_del(&buf->vb.queue); | ||
579 | do_gettimeofday(&buf->vb.ts); | ||
580 | dprintk(100, "[%p/%d] wakeup\n", buf, buf->vb.i); | ||
581 | |||
582 | s2255_fillbuff(dev, buf, dma_q->channel); | ||
583 | wake_up(&buf->vb.done); | ||
584 | dprintk(2, "wakeup [buf/i] [%p/%d]\n", buf, buf->vb.i); | ||
585 | unlock: | ||
586 | spin_unlock_irqrestore(&dev->slock, flags); | ||
587 | return 0; | ||
588 | } | ||
589 | |||
590 | |||
591 | static const struct s2255_fmt *format_by_fourcc(int fourcc) | ||
592 | { | ||
593 | unsigned int i; | ||
594 | |||
595 | for (i = 0; i < ARRAY_SIZE(formats); i++) { | ||
596 | if (-1 == formats[i].fourcc) | ||
597 | continue; | ||
598 | if (formats[i].fourcc == fourcc) | ||
599 | return formats + i; | ||
600 | } | ||
601 | return NULL; | ||
602 | } | ||
603 | |||
604 | |||
605 | |||
606 | |||
607 | /* video buffer vmalloc implementation based partly on VIVI driver which is | ||
608 | * Copyright (c) 2006 by | ||
609 | * Mauro Carvalho Chehab <mchehab--a.t--infradead.org> | ||
610 | * Ted Walther <ted--a.t--enumera.com> | ||
611 | * John Sokol <sokol--a.t--videotechnology.com> | ||
612 | * http://v4l.videotechnology.com/ | ||
613 | * | ||
614 | */ | ||
615 | static void s2255_fillbuff(struct s2255_dev *dev, struct s2255_buffer *buf, | ||
616 | int chn) | ||
617 | { | ||
618 | int pos = 0; | ||
619 | struct timeval ts; | ||
620 | const char *tmpbuf; | ||
621 | char *vbuf = videobuf_to_vmalloc(&buf->vb); | ||
622 | unsigned long last_frame; | ||
623 | struct s2255_framei *frm; | ||
624 | |||
625 | if (!vbuf) | ||
626 | return; | ||
627 | |||
628 | last_frame = dev->last_frame[chn]; | ||
629 | if (last_frame != -1) { | ||
630 | frm = &dev->buffer[chn].frame[last_frame]; | ||
631 | tmpbuf = | ||
632 | (const char *)dev->buffer[chn].frame[last_frame].lpvbits; | ||
633 | switch (buf->fmt->fourcc) { | ||
634 | case V4L2_PIX_FMT_YUYV: | ||
635 | case V4L2_PIX_FMT_UYVY: | ||
636 | planar422p_to_yuv_packed((const unsigned char *)tmpbuf, | ||
637 | vbuf, buf->vb.width, | ||
638 | buf->vb.height, | ||
639 | buf->fmt->fourcc); | ||
640 | break; | ||
641 | case V4L2_PIX_FMT_GREY: | ||
642 | memcpy(vbuf, tmpbuf, buf->vb.width * buf->vb.height); | ||
643 | break; | ||
644 | case V4L2_PIX_FMT_YUV422P: | ||
645 | memcpy(vbuf, tmpbuf, | ||
646 | buf->vb.width * buf->vb.height * 2); | ||
647 | break; | ||
648 | default: | ||
649 | printk(KERN_DEBUG "s2255: unknown format?\n"); | ||
650 | } | ||
651 | dev->last_frame[chn] = -1; | ||
652 | /* done with the frame, free it */ | ||
653 | frm->ulState = 0; | ||
654 | dprintk(4, "freeing buffer\n"); | ||
655 | } else { | ||
656 | printk(KERN_ERR "s2255: =======no frame\n"); | ||
657 | return; | ||
658 | |||
659 | } | ||
660 | dprintk(2, "s2255fill at : Buffer 0x%08lx size= %d\n", | ||
661 | (unsigned long)vbuf, pos); | ||
662 | /* tell v4l buffer was filled */ | ||
663 | |||
664 | buf->vb.field_count++; | ||
665 | do_gettimeofday(&ts); | ||
666 | buf->vb.ts = ts; | ||
667 | buf->vb.state = VIDEOBUF_DONE; | ||
668 | } | ||
669 | |||
670 | |||
671 | /* ------------------------------------------------------------------ | ||
672 | Videobuf operations | ||
673 | ------------------------------------------------------------------*/ | ||
674 | |||
675 | static int buffer_setup(struct videobuf_queue *vq, unsigned int *count, | ||
676 | unsigned int *size) | ||
677 | { | ||
678 | struct s2255_fh *fh = vq->priv_data; | ||
679 | |||
680 | *size = fh->width * fh->height * (fh->fmt->depth >> 3); | ||
681 | |||
682 | if (0 == *count) | ||
683 | *count = S2255_DEF_BUFS; | ||
684 | |||
685 | while (*size * *count > vid_limit * 1024 * 1024) | ||
686 | (*count)--; | ||
687 | |||
688 | return 0; | ||
689 | } | ||
690 | |||
691 | static void free_buffer(struct videobuf_queue *vq, struct s2255_buffer *buf) | ||
692 | { | ||
693 | dprintk(4, "%s\n", __func__); | ||
694 | |||
695 | videobuf_waiton(&buf->vb, 0, 0); | ||
696 | videobuf_vmalloc_free(&buf->vb); | ||
697 | buf->vb.state = VIDEOBUF_NEEDS_INIT; | ||
698 | } | ||
699 | |||
700 | static int buffer_prepare(struct videobuf_queue *vq, struct videobuf_buffer *vb, | ||
701 | enum v4l2_field field) | ||
702 | { | ||
703 | struct s2255_fh *fh = vq->priv_data; | ||
704 | struct s2255_buffer *buf = container_of(vb, struct s2255_buffer, vb); | ||
705 | int rc; | ||
706 | dprintk(4, "%s, field=%d\n", __func__, field); | ||
707 | if (fh->fmt == NULL) | ||
708 | return -EINVAL; | ||
709 | |||
710 | if ((fh->width < norm_minw(fh->dev->vdev[fh->channel])) || | ||
711 | (fh->width > norm_maxw(fh->dev->vdev[fh->channel])) || | ||
712 | (fh->height < norm_minh(fh->dev->vdev[fh->channel])) || | ||
713 | (fh->height > norm_maxh(fh->dev->vdev[fh->channel]))) { | ||
714 | dprintk(4, "invalid buffer prepare\n"); | ||
715 | return -EINVAL; | ||
716 | } | ||
717 | |||
718 | buf->vb.size = fh->width * fh->height * (fh->fmt->depth >> 3); | ||
719 | |||
720 | if (0 != buf->vb.baddr && buf->vb.bsize < buf->vb.size) { | ||
721 | dprintk(4, "invalid buffer prepare\n"); | ||
722 | return -EINVAL; | ||
723 | } | ||
724 | |||
725 | buf->fmt = fh->fmt; | ||
726 | buf->vb.width = fh->width; | ||
727 | buf->vb.height = fh->height; | ||
728 | buf->vb.field = field; | ||
729 | |||
730 | |||
731 | if (VIDEOBUF_NEEDS_INIT == buf->vb.state) { | ||
732 | rc = videobuf_iolock(vq, &buf->vb, NULL); | ||
733 | if (rc < 0) | ||
734 | goto fail; | ||
735 | } | ||
736 | |||
737 | buf->vb.state = VIDEOBUF_PREPARED; | ||
738 | return 0; | ||
739 | fail: | ||
740 | free_buffer(vq, buf); | ||
741 | return rc; | ||
742 | } | ||
743 | |||
744 | static void buffer_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb) | ||
745 | { | ||
746 | struct s2255_buffer *buf = container_of(vb, struct s2255_buffer, vb); | ||
747 | struct s2255_fh *fh = vq->priv_data; | ||
748 | struct s2255_dev *dev = fh->dev; | ||
749 | struct s2255_dmaqueue *vidq = &dev->vidq[fh->channel]; | ||
750 | |||
751 | dprintk(1, "%s\n", __func__); | ||
752 | |||
753 | buf->vb.state = VIDEOBUF_QUEUED; | ||
754 | list_add_tail(&buf->vb.queue, &vidq->active); | ||
755 | } | ||
756 | |||
757 | static void buffer_release(struct videobuf_queue *vq, | ||
758 | struct videobuf_buffer *vb) | ||
759 | { | ||
760 | struct s2255_buffer *buf = container_of(vb, struct s2255_buffer, vb); | ||
761 | struct s2255_fh *fh = vq->priv_data; | ||
762 | dprintk(4, "%s %d\n", __func__, fh->channel); | ||
763 | free_buffer(vq, buf); | ||
764 | } | ||
765 | |||
766 | static struct videobuf_queue_ops s2255_video_qops = { | ||
767 | .buf_setup = buffer_setup, | ||
768 | .buf_prepare = buffer_prepare, | ||
769 | .buf_queue = buffer_queue, | ||
770 | .buf_release = buffer_release, | ||
771 | }; | ||
772 | |||
773 | |||
774 | static int res_get(struct s2255_dev *dev, struct s2255_fh *fh) | ||
775 | { | ||
776 | /* is it free? */ | ||
777 | mutex_lock(&dev->lock); | ||
778 | if (dev->resources[fh->channel]) { | ||
779 | /* no, someone else uses it */ | ||
780 | mutex_unlock(&dev->lock); | ||
781 | return 0; | ||
782 | } | ||
783 | /* it's free, grab it */ | ||
784 | dev->resources[fh->channel] = 1; | ||
785 | dprintk(1, "res: get\n"); | ||
786 | mutex_unlock(&dev->lock); | ||
787 | return 1; | ||
788 | } | ||
789 | |||
790 | static int res_locked(struct s2255_dev *dev, struct s2255_fh *fh) | ||
791 | { | ||
792 | return (dev->resources[fh->channel]); | ||
793 | } | ||
794 | |||
795 | static void res_free(struct s2255_dev *dev, struct s2255_fh *fh) | ||
796 | { | ||
797 | dev->resources[fh->channel] = 0; | ||
798 | dprintk(1, "res: put\n"); | ||
799 | } | ||
800 | |||
801 | |||
802 | static int vidioc_querycap(struct file *file, void *priv, | ||
803 | struct v4l2_capability *cap) | ||
804 | { | ||
805 | struct s2255_fh *fh = file->private_data; | ||
806 | struct s2255_dev *dev = fh->dev; | ||
807 | strlcpy(cap->driver, "s2255", sizeof(cap->driver)); | ||
808 | strlcpy(cap->card, "s2255", sizeof(cap->card)); | ||
809 | strlcpy(cap->bus_info, dev_name(&dev->udev->dev), sizeof(cap->bus_info)); | ||
810 | cap->version = S2255_VERSION; | ||
811 | cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING; | ||
812 | return 0; | ||
813 | } | ||
814 | |||
815 | static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv, | ||
816 | struct v4l2_fmtdesc *f) | ||
817 | { | ||
818 | int index = 0; | ||
819 | if (f) | ||
820 | index = f->index; | ||
821 | |||
822 | if (index >= ARRAY_SIZE(formats)) | ||
823 | return -EINVAL; | ||
824 | |||
825 | dprintk(4, "name %s\n", formats[index].name); | ||
826 | strlcpy(f->description, formats[index].name, sizeof(f->description)); | ||
827 | f->pixelformat = formats[index].fourcc; | ||
828 | return 0; | ||
829 | } | ||
830 | |||
831 | static int vidioc_g_fmt_vid_cap(struct file *file, void *priv, | ||
832 | struct v4l2_format *f) | ||
833 | { | ||
834 | struct s2255_fh *fh = priv; | ||
835 | |||
836 | f->fmt.pix.width = fh->width; | ||
837 | f->fmt.pix.height = fh->height; | ||
838 | f->fmt.pix.field = fh->vb_vidq.field; | ||
839 | f->fmt.pix.pixelformat = fh->fmt->fourcc; | ||
840 | f->fmt.pix.bytesperline = f->fmt.pix.width * (fh->fmt->depth >> 3); | ||
841 | f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline; | ||
842 | |||
843 | return (0); | ||
844 | } | ||
845 | |||
846 | static int vidioc_try_fmt_vid_cap(struct file *file, void *priv, | ||
847 | struct v4l2_format *f) | ||
848 | { | ||
849 | const struct s2255_fmt *fmt; | ||
850 | enum v4l2_field field; | ||
851 | int b_any_field = 0; | ||
852 | struct s2255_fh *fh = priv; | ||
853 | struct s2255_dev *dev = fh->dev; | ||
854 | int is_ntsc; | ||
855 | |||
856 | is_ntsc = | ||
857 | (dev->vdev[fh->channel]->current_norm & V4L2_STD_NTSC) ? 1 : 0; | ||
858 | |||
859 | fmt = format_by_fourcc(f->fmt.pix.pixelformat); | ||
860 | |||
861 | if (fmt == NULL) | ||
862 | return -EINVAL; | ||
863 | |||
864 | field = f->fmt.pix.field; | ||
865 | if (field == V4L2_FIELD_ANY) | ||
866 | b_any_field = 1; | ||
867 | |||
868 | dprintk(4, "try format %d \n", is_ntsc); | ||
869 | /* supports 3 sizes. see s2255drv.h */ | ||
870 | dprintk(50, "width test %d, height %d\n", | ||
871 | f->fmt.pix.width, f->fmt.pix.height); | ||
872 | if (is_ntsc) { | ||
873 | /* NTSC */ | ||
874 | if (f->fmt.pix.height >= NUM_LINES_1CIFS_NTSC * 2) { | ||
875 | f->fmt.pix.height = NUM_LINES_1CIFS_NTSC * 2; | ||
876 | if (b_any_field) { | ||
877 | field = V4L2_FIELD_SEQ_TB; | ||
878 | } else if (!((field == V4L2_FIELD_INTERLACED) || | ||
879 | (field == V4L2_FIELD_SEQ_TB) || | ||
880 | (field == V4L2_FIELD_INTERLACED_TB))) { | ||
881 | dprintk(1, "unsupported field setting\n"); | ||
882 | return -EINVAL; | ||
883 | } | ||
884 | } else { | ||
885 | f->fmt.pix.height = NUM_LINES_1CIFS_NTSC; | ||
886 | if (b_any_field) { | ||
887 | field = V4L2_FIELD_TOP; | ||
888 | } else if (!((field == V4L2_FIELD_TOP) || | ||
889 | (field == V4L2_FIELD_BOTTOM))) { | ||
890 | dprintk(1, "unsupported field setting\n"); | ||
891 | return -EINVAL; | ||
892 | } | ||
893 | |||
894 | } | ||
895 | if (f->fmt.pix.width >= LINE_SZ_4CIFS_NTSC) | ||
896 | f->fmt.pix.width = LINE_SZ_4CIFS_NTSC; | ||
897 | else if (f->fmt.pix.width >= LINE_SZ_2CIFS_NTSC) | ||
898 | f->fmt.pix.width = LINE_SZ_2CIFS_NTSC; | ||
899 | else if (f->fmt.pix.width >= LINE_SZ_1CIFS_NTSC) | ||
900 | f->fmt.pix.width = LINE_SZ_1CIFS_NTSC; | ||
901 | else | ||
902 | f->fmt.pix.width = LINE_SZ_1CIFS_NTSC; | ||
903 | } else { | ||
904 | /* PAL */ | ||
905 | if (f->fmt.pix.height >= NUM_LINES_1CIFS_PAL * 2) { | ||
906 | f->fmt.pix.height = NUM_LINES_1CIFS_PAL * 2; | ||
907 | if (b_any_field) { | ||
908 | field = V4L2_FIELD_SEQ_TB; | ||
909 | } else if (!((field == V4L2_FIELD_INTERLACED) || | ||
910 | (field == V4L2_FIELD_SEQ_TB) || | ||
911 | (field == V4L2_FIELD_INTERLACED_TB))) { | ||
912 | dprintk(1, "unsupported field setting\n"); | ||
913 | return -EINVAL; | ||
914 | } | ||
915 | } else { | ||
916 | f->fmt.pix.height = NUM_LINES_1CIFS_PAL; | ||
917 | if (b_any_field) { | ||
918 | field = V4L2_FIELD_TOP; | ||
919 | } else if (!((field == V4L2_FIELD_TOP) || | ||
920 | (field == V4L2_FIELD_BOTTOM))) { | ||
921 | dprintk(1, "unsupported field setting\n"); | ||
922 | return -EINVAL; | ||
923 | } | ||
924 | } | ||
925 | if (f->fmt.pix.width >= LINE_SZ_4CIFS_PAL) { | ||
926 | dprintk(50, "pal 704\n"); | ||
927 | f->fmt.pix.width = LINE_SZ_4CIFS_PAL; | ||
928 | field = V4L2_FIELD_SEQ_TB; | ||
929 | } else if (f->fmt.pix.width >= LINE_SZ_2CIFS_PAL) { | ||
930 | dprintk(50, "pal 352A\n"); | ||
931 | f->fmt.pix.width = LINE_SZ_2CIFS_PAL; | ||
932 | field = V4L2_FIELD_TOP; | ||
933 | } else if (f->fmt.pix.width >= LINE_SZ_1CIFS_PAL) { | ||
934 | dprintk(50, "pal 352B\n"); | ||
935 | f->fmt.pix.width = LINE_SZ_1CIFS_PAL; | ||
936 | field = V4L2_FIELD_TOP; | ||
937 | } else { | ||
938 | dprintk(50, "pal 352C\n"); | ||
939 | f->fmt.pix.width = LINE_SZ_1CIFS_PAL; | ||
940 | field = V4L2_FIELD_TOP; | ||
941 | } | ||
942 | } | ||
943 | |||
944 | dprintk(50, "width %d height %d field %d \n", f->fmt.pix.width, | ||
945 | f->fmt.pix.height, f->fmt.pix.field); | ||
946 | f->fmt.pix.field = field; | ||
947 | f->fmt.pix.bytesperline = (f->fmt.pix.width * fmt->depth) >> 3; | ||
948 | f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline; | ||
949 | return 0; | ||
950 | } | ||
951 | |||
952 | static int vidioc_s_fmt_vid_cap(struct file *file, void *priv, | ||
953 | struct v4l2_format *f) | ||
954 | { | ||
955 | struct s2255_fh *fh = priv; | ||
956 | const struct s2255_fmt *fmt; | ||
957 | struct videobuf_queue *q = &fh->vb_vidq; | ||
958 | int ret; | ||
959 | int norm; | ||
960 | |||
961 | ret = vidioc_try_fmt_vid_cap(file, fh, f); | ||
962 | |||
963 | if (ret < 0) | ||
964 | return (ret); | ||
965 | |||
966 | fmt = format_by_fourcc(f->fmt.pix.pixelformat); | ||
967 | |||
968 | if (fmt == NULL) | ||
969 | return -EINVAL; | ||
970 | |||
971 | mutex_lock(&q->vb_lock); | ||
972 | |||
973 | if (videobuf_queue_is_busy(&fh->vb_vidq)) { | ||
974 | dprintk(1, "queue busy\n"); | ||
975 | ret = -EBUSY; | ||
976 | goto out_s_fmt; | ||
977 | } | ||
978 | |||
979 | if (res_locked(fh->dev, fh)) { | ||
980 | dprintk(1, "can't change format after started\n"); | ||
981 | ret = -EBUSY; | ||
982 | goto out_s_fmt; | ||
983 | } | ||
984 | |||
985 | fh->fmt = fmt; | ||
986 | fh->width = f->fmt.pix.width; | ||
987 | fh->height = f->fmt.pix.height; | ||
988 | fh->vb_vidq.field = f->fmt.pix.field; | ||
989 | fh->type = f->type; | ||
990 | norm = norm_minw(fh->dev->vdev[fh->channel]); | ||
991 | if (fh->width > norm_minw(fh->dev->vdev[fh->channel])) { | ||
992 | if (fh->height > norm_minh(fh->dev->vdev[fh->channel])) | ||
993 | fh->mode.scale = SCALE_4CIFS; | ||
994 | else | ||
995 | fh->mode.scale = SCALE_2CIFS; | ||
996 | |||
997 | } else { | ||
998 | fh->mode.scale = SCALE_1CIFS; | ||
999 | } | ||
1000 | |||
1001 | /* color mode */ | ||
1002 | switch (fh->fmt->fourcc) { | ||
1003 | case V4L2_PIX_FMT_GREY: | ||
1004 | fh->mode.color = COLOR_Y8; | ||
1005 | break; | ||
1006 | case V4L2_PIX_FMT_YUV422P: | ||
1007 | fh->mode.color = COLOR_YUVPL; | ||
1008 | break; | ||
1009 | case V4L2_PIX_FMT_YUYV: | ||
1010 | case V4L2_PIX_FMT_UYVY: | ||
1011 | default: | ||
1012 | fh->mode.color = COLOR_YUVPK; | ||
1013 | break; | ||
1014 | } | ||
1015 | ret = 0; | ||
1016 | out_s_fmt: | ||
1017 | mutex_unlock(&q->vb_lock); | ||
1018 | return ret; | ||
1019 | } | ||
1020 | |||
1021 | static int vidioc_reqbufs(struct file *file, void *priv, | ||
1022 | struct v4l2_requestbuffers *p) | ||
1023 | { | ||
1024 | int rc; | ||
1025 | struct s2255_fh *fh = priv; | ||
1026 | rc = videobuf_reqbufs(&fh->vb_vidq, p); | ||
1027 | return rc; | ||
1028 | } | ||
1029 | |||
1030 | static int vidioc_querybuf(struct file *file, void *priv, struct v4l2_buffer *p) | ||
1031 | { | ||
1032 | int rc; | ||
1033 | struct s2255_fh *fh = priv; | ||
1034 | rc = videobuf_querybuf(&fh->vb_vidq, p); | ||
1035 | return rc; | ||
1036 | } | ||
1037 | |||
1038 | static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *p) | ||
1039 | { | ||
1040 | int rc; | ||
1041 | struct s2255_fh *fh = priv; | ||
1042 | rc = videobuf_qbuf(&fh->vb_vidq, p); | ||
1043 | return rc; | ||
1044 | } | ||
1045 | |||
1046 | static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *p) | ||
1047 | { | ||
1048 | int rc; | ||
1049 | struct s2255_fh *fh = priv; | ||
1050 | rc = videobuf_dqbuf(&fh->vb_vidq, p, file->f_flags & O_NONBLOCK); | ||
1051 | return rc; | ||
1052 | } | ||
1053 | |||
1054 | #ifdef CONFIG_VIDEO_V4L1_COMPAT | ||
1055 | static int vidioc_cgmbuf(struct file *file, void *priv, struct video_mbuf *mbuf) | ||
1056 | { | ||
1057 | struct s2255_fh *fh = priv; | ||
1058 | |||
1059 | return videobuf_cgmbuf(&fh->vb_vidq, mbuf, 8); | ||
1060 | } | ||
1061 | #endif | ||
1062 | |||
1063 | /* write to the configuration pipe, synchronously */ | ||
1064 | static int s2255_write_config(struct usb_device *udev, unsigned char *pbuf, | ||
1065 | int size) | ||
1066 | { | ||
1067 | int pipe; | ||
1068 | int done; | ||
1069 | long retval = -1; | ||
1070 | if (udev) { | ||
1071 | pipe = usb_sndbulkpipe(udev, S2255_CONFIG_EP); | ||
1072 | retval = usb_bulk_msg(udev, pipe, pbuf, size, &done, 500); | ||
1073 | } | ||
1074 | return retval; | ||
1075 | } | ||
1076 | |||
1077 | static u32 get_transfer_size(struct s2255_mode *mode) | ||
1078 | { | ||
1079 | int linesPerFrame = LINE_SZ_DEF; | ||
1080 | int pixelsPerLine = NUM_LINES_DEF; | ||
1081 | u32 outImageSize; | ||
1082 | u32 usbInSize; | ||
1083 | unsigned int mask_mult; | ||
1084 | |||
1085 | if (mode == NULL) | ||
1086 | return 0; | ||
1087 | |||
1088 | if (mode->format == FORMAT_NTSC) { | ||
1089 | switch (mode->scale) { | ||
1090 | case SCALE_4CIFS: | ||
1091 | linesPerFrame = NUM_LINES_4CIFS_NTSC * 2; | ||
1092 | pixelsPerLine = LINE_SZ_4CIFS_NTSC; | ||
1093 | break; | ||
1094 | case SCALE_2CIFS: | ||
1095 | linesPerFrame = NUM_LINES_2CIFS_NTSC; | ||
1096 | pixelsPerLine = LINE_SZ_2CIFS_NTSC; | ||
1097 | break; | ||
1098 | case SCALE_1CIFS: | ||
1099 | linesPerFrame = NUM_LINES_1CIFS_NTSC; | ||
1100 | pixelsPerLine = LINE_SZ_1CIFS_NTSC; | ||
1101 | break; | ||
1102 | default: | ||
1103 | break; | ||
1104 | } | ||
1105 | } else if (mode->format == FORMAT_PAL) { | ||
1106 | switch (mode->scale) { | ||
1107 | case SCALE_4CIFS: | ||
1108 | linesPerFrame = NUM_LINES_4CIFS_PAL * 2; | ||
1109 | pixelsPerLine = LINE_SZ_4CIFS_PAL; | ||
1110 | break; | ||
1111 | case SCALE_2CIFS: | ||
1112 | linesPerFrame = NUM_LINES_2CIFS_PAL; | ||
1113 | pixelsPerLine = LINE_SZ_2CIFS_PAL; | ||
1114 | break; | ||
1115 | case SCALE_1CIFS: | ||
1116 | linesPerFrame = NUM_LINES_1CIFS_PAL; | ||
1117 | pixelsPerLine = LINE_SZ_1CIFS_PAL; | ||
1118 | break; | ||
1119 | default: | ||
1120 | break; | ||
1121 | } | ||
1122 | } | ||
1123 | outImageSize = linesPerFrame * pixelsPerLine; | ||
1124 | if (mode->color != COLOR_Y8) { | ||
1125 | /* 2 bytes/pixel if not monochrome */ | ||
1126 | outImageSize *= 2; | ||
1127 | } | ||
1128 | |||
1129 | /* total bytes to send including prefix and 4K padding; | ||
1130 | must be a multiple of USB_READ_SIZE */ | ||
1131 | usbInSize = outImageSize + PREFIX_SIZE; /* always send prefix */ | ||
1132 | mask_mult = 0xffffffffUL - DEF_USB_BLOCK + 1; | ||
1133 | /* if size not a multiple of USB_READ_SIZE */ | ||
1134 | if (usbInSize & ~mask_mult) | ||
1135 | usbInSize = (usbInSize & mask_mult) + (DEF_USB_BLOCK); | ||
1136 | return usbInSize; | ||
1137 | } | ||
1138 | |||
1139 | static void dump_verify_mode(struct s2255_dev *sdev, struct s2255_mode *mode) | ||
1140 | { | ||
1141 | struct device *dev = &sdev->udev->dev; | ||
1142 | dev_info(dev, "------------------------------------------------\n"); | ||
1143 | dev_info(dev, "verify mode\n"); | ||
1144 | dev_info(dev, "format: %d\n", mode->format); | ||
1145 | dev_info(dev, "scale: %d\n", mode->scale); | ||
1146 | dev_info(dev, "fdec: %d\n", mode->fdec); | ||
1147 | dev_info(dev, "color: %d\n", mode->color); | ||
1148 | dev_info(dev, "bright: 0x%x\n", mode->bright); | ||
1149 | dev_info(dev, "restart: 0x%x\n", mode->restart); | ||
1150 | dev_info(dev, "usb_block: 0x%x\n", mode->usb_block); | ||
1151 | dev_info(dev, "single: 0x%x\n", mode->single); | ||
1152 | dev_info(dev, "------------------------------------------------\n"); | ||
1153 | } | ||
1154 | |||
1155 | /* | ||
1156 | * set mode is the function which controls the DSP. | ||
1157 | * the restart parameter in struct s2255_mode should be set whenever | ||
1158 | * the image size could change via color format, video system or image | ||
1159 | * size. | ||
1160 | * When the restart parameter is set, we sleep for ONE frame to allow the | ||
1161 | * DSP time to get the new frame | ||
1162 | */ | ||
1163 | static int s2255_set_mode(struct s2255_dev *dev, unsigned long chn, | ||
1164 | struct s2255_mode *mode) | ||
1165 | { | ||
1166 | int res; | ||
1167 | u32 *buffer; | ||
1168 | unsigned long chn_rev; | ||
1169 | |||
1170 | chn_rev = G_chnmap[chn]; | ||
1171 | dprintk(3, "mode scale [%ld] %p %d\n", chn, mode, mode->scale); | ||
1172 | dprintk(3, "mode scale [%ld] %p %d\n", chn, &dev->mode[chn], | ||
1173 | dev->mode[chn].scale); | ||
1174 | dprintk(2, "mode contrast %x\n", mode->contrast); | ||
1175 | |||
1176 | /* save the mode */ | ||
1177 | dev->mode[chn] = *mode; | ||
1178 | dev->req_image_size[chn] = get_transfer_size(mode); | ||
1179 | dprintk(1, "transfer size %ld\n", dev->req_image_size[chn]); | ||
1180 | |||
1181 | buffer = kzalloc(512, GFP_KERNEL); | ||
1182 | if (buffer == NULL) { | ||
1183 | dev_err(&dev->udev->dev, "out of mem\n"); | ||
1184 | return -ENOMEM; | ||
1185 | } | ||
1186 | |||
1187 | /* set the mode */ | ||
1188 | buffer[0] = IN_DATA_TOKEN; | ||
1189 | buffer[1] = (u32) chn_rev; | ||
1190 | buffer[2] = CMD_SET_MODE; | ||
1191 | memcpy(&buffer[3], &dev->mode[chn], sizeof(struct s2255_mode)); | ||
1192 | res = s2255_write_config(dev->udev, (unsigned char *)buffer, 512); | ||
1193 | if (debug) | ||
1194 | dump_verify_mode(dev, mode); | ||
1195 | kfree(buffer); | ||
1196 | dprintk(1, "set mode done chn %lu, %d\n", chn, res); | ||
1197 | |||
1198 | /* wait at least 3 frames before continuing */ | ||
1199 | if (mode->restart) | ||
1200 | msleep(125); | ||
1201 | |||
1202 | /* clear the restart flag */ | ||
1203 | dev->mode[chn].restart = 0; | ||
1204 | |||
1205 | return res; | ||
1206 | } | ||
1207 | |||
1208 | static int vidioc_streamon(struct file *file, void *priv, enum v4l2_buf_type i) | ||
1209 | { | ||
1210 | int res; | ||
1211 | struct s2255_fh *fh = priv; | ||
1212 | struct s2255_dev *dev = fh->dev; | ||
1213 | struct s2255_mode *new_mode; | ||
1214 | struct s2255_mode *old_mode; | ||
1215 | int chn; | ||
1216 | int j; | ||
1217 | dprintk(4, "%s\n", __func__); | ||
1218 | if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) { | ||
1219 | dev_err(&dev->udev->dev, "invalid fh type0\n"); | ||
1220 | return -EINVAL; | ||
1221 | } | ||
1222 | if (i != fh->type) { | ||
1223 | dev_err(&dev->udev->dev, "invalid fh type1\n"); | ||
1224 | return -EINVAL; | ||
1225 | } | ||
1226 | |||
1227 | if (!res_get(dev, fh)) { | ||
1228 | dev_err(&dev->udev->dev, "res get busy\n"); | ||
1229 | return -EBUSY; | ||
1230 | } | ||
1231 | |||
1232 | /* send a set mode command everytime with restart. | ||
1233 | in case we switch resolutions or other parameters */ | ||
1234 | chn = fh->channel; | ||
1235 | new_mode = &fh->mode; | ||
1236 | old_mode = &fh->dev->mode[chn]; | ||
1237 | |||
1238 | if (new_mode->color != old_mode->color) | ||
1239 | new_mode->restart = 1; | ||
1240 | else if (new_mode->scale != old_mode->scale) | ||
1241 | new_mode->restart = 1; | ||
1242 | else if (new_mode->format != old_mode->format) | ||
1243 | new_mode->restart = 1; | ||
1244 | |||
1245 | s2255_set_mode(dev, chn, new_mode); | ||
1246 | new_mode->restart = 0; | ||
1247 | *old_mode = *new_mode; | ||
1248 | dev->cur_fmt[chn] = fh->fmt; | ||
1249 | dprintk(1, "%s[%d]\n", __func__, chn); | ||
1250 | dev->last_frame[chn] = -1; | ||
1251 | dev->bad_payload[chn] = 0; | ||
1252 | dev->cur_frame[chn] = 0; | ||
1253 | for (j = 0; j < SYS_FRAMES; j++) { | ||
1254 | dev->buffer[chn].frame[j].ulState = 0; | ||
1255 | dev->buffer[chn].frame[j].cur_size = 0; | ||
1256 | } | ||
1257 | res = videobuf_streamon(&fh->vb_vidq); | ||
1258 | if (res == 0) { | ||
1259 | s2255_start_acquire(dev, chn); | ||
1260 | dev->b_acquire[chn] = 1; | ||
1261 | } else { | ||
1262 | res_free(dev, fh); | ||
1263 | } | ||
1264 | return res; | ||
1265 | } | ||
1266 | |||
1267 | static int vidioc_streamoff(struct file *file, void *priv, enum v4l2_buf_type i) | ||
1268 | { | ||
1269 | int res; | ||
1270 | struct s2255_fh *fh = priv; | ||
1271 | struct s2255_dev *dev = fh->dev; | ||
1272 | |||
1273 | dprintk(4, "%s\n, channel: %d", __func__, fh->channel); | ||
1274 | if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) { | ||
1275 | printk(KERN_ERR "invalid fh type0\n"); | ||
1276 | return -EINVAL; | ||
1277 | } | ||
1278 | if (i != fh->type) { | ||
1279 | printk(KERN_ERR "invalid type i\n"); | ||
1280 | return -EINVAL; | ||
1281 | } | ||
1282 | s2255_stop_acquire(dev, fh->channel); | ||
1283 | res = videobuf_streamoff(&fh->vb_vidq); | ||
1284 | res_free(dev, fh); | ||
1285 | return res; | ||
1286 | } | ||
1287 | |||
1288 | static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id *i) | ||
1289 | { | ||
1290 | struct s2255_fh *fh = priv; | ||
1291 | struct s2255_mode *mode; | ||
1292 | struct videobuf_queue *q = &fh->vb_vidq; | ||
1293 | int ret = 0; | ||
1294 | |||
1295 | mutex_lock(&q->vb_lock); | ||
1296 | if (videobuf_queue_is_busy(q)) { | ||
1297 | dprintk(1, "queue busy\n"); | ||
1298 | ret = -EBUSY; | ||
1299 | goto out_s_std; | ||
1300 | } | ||
1301 | |||
1302 | if (res_locked(fh->dev, fh)) { | ||
1303 | dprintk(1, "can't change standard after started\n"); | ||
1304 | ret = -EBUSY; | ||
1305 | goto out_s_std; | ||
1306 | } | ||
1307 | mode = &fh->mode; | ||
1308 | |||
1309 | if (*i & V4L2_STD_NTSC) { | ||
1310 | dprintk(4, "vidioc_s_std NTSC\n"); | ||
1311 | mode->format = FORMAT_NTSC; | ||
1312 | } else if (*i & V4L2_STD_PAL) { | ||
1313 | dprintk(4, "vidioc_s_std PAL\n"); | ||
1314 | mode->format = FORMAT_PAL; | ||
1315 | } else { | ||
1316 | ret = -EINVAL; | ||
1317 | } | ||
1318 | out_s_std: | ||
1319 | mutex_unlock(&q->vb_lock); | ||
1320 | return ret; | ||
1321 | } | ||
1322 | |||
1323 | /* Sensoray 2255 is a multiple channel capture device. | ||
1324 | It does not have a "crossbar" of inputs. | ||
1325 | We use one V4L device per channel. The user must | ||
1326 | be aware that certain combinations are not allowed. | ||
1327 | For instance, you cannot do full FPS on more than 2 channels(2 videodevs) | ||
1328 | at once in color(you can do full fps on 4 channels with greyscale. | ||
1329 | */ | ||
1330 | static int vidioc_enum_input(struct file *file, void *priv, | ||
1331 | struct v4l2_input *inp) | ||
1332 | { | ||
1333 | if (inp->index != 0) | ||
1334 | return -EINVAL; | ||
1335 | |||
1336 | inp->type = V4L2_INPUT_TYPE_CAMERA; | ||
1337 | inp->std = S2255_NORMS; | ||
1338 | strlcpy(inp->name, "Camera", sizeof(inp->name)); | ||
1339 | return (0); | ||
1340 | } | ||
1341 | |||
1342 | static int vidioc_g_input(struct file *file, void *priv, unsigned int *i) | ||
1343 | { | ||
1344 | *i = 0; | ||
1345 | return 0; | ||
1346 | } | ||
1347 | static int vidioc_s_input(struct file *file, void *priv, unsigned int i) | ||
1348 | { | ||
1349 | if (i > 0) | ||
1350 | return -EINVAL; | ||
1351 | return 0; | ||
1352 | } | ||
1353 | |||
1354 | /* --- controls ---------------------------------------------- */ | ||
1355 | static int vidioc_queryctrl(struct file *file, void *priv, | ||
1356 | struct v4l2_queryctrl *qc) | ||
1357 | { | ||
1358 | int i; | ||
1359 | |||
1360 | for (i = 0; i < ARRAY_SIZE(s2255_qctrl); i++) | ||
1361 | if (qc->id && qc->id == s2255_qctrl[i].id) { | ||
1362 | memcpy(qc, &(s2255_qctrl[i]), sizeof(*qc)); | ||
1363 | return (0); | ||
1364 | } | ||
1365 | |||
1366 | dprintk(4, "query_ctrl -EINVAL %d\n", qc->id); | ||
1367 | return -EINVAL; | ||
1368 | } | ||
1369 | |||
1370 | static int vidioc_g_ctrl(struct file *file, void *priv, | ||
1371 | struct v4l2_control *ctrl) | ||
1372 | { | ||
1373 | int i; | ||
1374 | |||
1375 | for (i = 0; i < ARRAY_SIZE(s2255_qctrl); i++) | ||
1376 | if (ctrl->id == s2255_qctrl[i].id) { | ||
1377 | ctrl->value = qctl_regs[i]; | ||
1378 | return (0); | ||
1379 | } | ||
1380 | dprintk(4, "g_ctrl -EINVAL\n"); | ||
1381 | |||
1382 | return -EINVAL; | ||
1383 | } | ||
1384 | |||
1385 | static int vidioc_s_ctrl(struct file *file, void *priv, | ||
1386 | struct v4l2_control *ctrl) | ||
1387 | { | ||
1388 | int i; | ||
1389 | struct s2255_fh *fh = priv; | ||
1390 | struct s2255_dev *dev = fh->dev; | ||
1391 | struct s2255_mode *mode; | ||
1392 | mode = &fh->mode; | ||
1393 | dprintk(4, "vidioc_s_ctrl\n"); | ||
1394 | for (i = 0; i < ARRAY_SIZE(s2255_qctrl); i++) { | ||
1395 | if (ctrl->id == s2255_qctrl[i].id) { | ||
1396 | if (ctrl->value < s2255_qctrl[i].minimum || | ||
1397 | ctrl->value > s2255_qctrl[i].maximum) | ||
1398 | return (-ERANGE); | ||
1399 | |||
1400 | qctl_regs[i] = ctrl->value; | ||
1401 | /* update the mode to the corresponding value */ | ||
1402 | switch (ctrl->id) { | ||
1403 | case V4L2_CID_BRIGHTNESS: | ||
1404 | mode->bright = ctrl->value; | ||
1405 | break; | ||
1406 | case V4L2_CID_CONTRAST: | ||
1407 | mode->contrast = ctrl->value; | ||
1408 | break; | ||
1409 | case V4L2_CID_HUE: | ||
1410 | mode->hue = ctrl->value; | ||
1411 | break; | ||
1412 | case V4L2_CID_SATURATION: | ||
1413 | mode->saturation = ctrl->value; | ||
1414 | break; | ||
1415 | } | ||
1416 | mode->restart = 0; | ||
1417 | /* set mode here. Note: stream does not need restarted. | ||
1418 | some V4L programs restart stream unnecessarily | ||
1419 | after a s_crtl. | ||
1420 | */ | ||
1421 | s2255_set_mode(dev, fh->channel, mode); | ||
1422 | return 0; | ||
1423 | } | ||
1424 | } | ||
1425 | return -EINVAL; | ||
1426 | } | ||
1427 | |||
1428 | static int s2255_open(struct inode *inode, struct file *file) | ||
1429 | { | ||
1430 | int minor = iminor(inode); | ||
1431 | struct s2255_dev *h, *dev = NULL; | ||
1432 | struct s2255_fh *fh; | ||
1433 | struct list_head *list; | ||
1434 | enum v4l2_buf_type type = 0; | ||
1435 | int i = 0; | ||
1436 | int cur_channel = -1; | ||
1437 | dprintk(1, "s2255: open called (minor=%d)\n", minor); | ||
1438 | |||
1439 | list_for_each(list, &s2255_devlist) { | ||
1440 | h = list_entry(list, struct s2255_dev, s2255_devlist); | ||
1441 | for (i = 0; i < MAX_CHANNELS; i++) { | ||
1442 | if (h->vdev[i]->minor == minor) { | ||
1443 | cur_channel = i; | ||
1444 | dev = h; | ||
1445 | type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | ||
1446 | } | ||
1447 | } | ||
1448 | } | ||
1449 | |||
1450 | if ((NULL == dev) || (cur_channel == -1)) { | ||
1451 | dprintk(1, "s2255: openv4l no dev\n"); | ||
1452 | return -ENODEV; | ||
1453 | } | ||
1454 | |||
1455 | mutex_lock(&dev->open_lock); | ||
1456 | |||
1457 | dev->users[cur_channel]++; | ||
1458 | if (dev->users[cur_channel] > S2255_MAX_USERS) { | ||
1459 | dev->users[cur_channel]--; | ||
1460 | mutex_unlock(&dev->open_lock); | ||
1461 | printk(KERN_INFO "s2255drv: too many open handles!\n"); | ||
1462 | return -EBUSY; | ||
1463 | } | ||
1464 | |||
1465 | if (atomic_read(&dev->fw_data->fw_state) == S2255_FW_FAILED) { | ||
1466 | err("2255 firmware load failed. retrying.\n"); | ||
1467 | s2255_fwload_start(dev); | ||
1468 | wait_event_timeout(dev->fw_data->wait_fw, | ||
1469 | (atomic_read(&dev->fw_data->fw_state) | ||
1470 | != S2255_FW_NOTLOADED), | ||
1471 | msecs_to_jiffies(S2255_LOAD_TIMEOUT)); | ||
1472 | if (atomic_read(&dev->fw_data->fw_state) | ||
1473 | != S2255_FW_SUCCESS) { | ||
1474 | printk(KERN_INFO "2255 FW load failed after 2 tries\n"); | ||
1475 | mutex_unlock(&dev->open_lock); | ||
1476 | return -EFAULT; | ||
1477 | } | ||
1478 | } else if (atomic_read(&dev->fw_data->fw_state) == S2255_FW_NOTLOADED) { | ||
1479 | /* give S2255_LOAD_TIMEOUT time for firmware to load in case | ||
1480 | driver loaded and then device immediately opened */ | ||
1481 | printk(KERN_INFO "%s waiting for firmware load\n", __func__); | ||
1482 | wait_event_timeout(dev->fw_data->wait_fw, | ||
1483 | (atomic_read(&dev->fw_data->fw_state) | ||
1484 | != S2255_FW_NOTLOADED), | ||
1485 | msecs_to_jiffies(S2255_LOAD_TIMEOUT)); | ||
1486 | if (atomic_read(&dev->fw_data->fw_state) | ||
1487 | != S2255_FW_SUCCESS) { | ||
1488 | printk(KERN_INFO "2255 firmware not loaded" | ||
1489 | "try again\n"); | ||
1490 | mutex_unlock(&dev->open_lock); | ||
1491 | return -EBUSY; | ||
1492 | } | ||
1493 | } | ||
1494 | |||
1495 | /* allocate + initialize per filehandle data */ | ||
1496 | fh = kzalloc(sizeof(*fh), GFP_KERNEL); | ||
1497 | if (NULL == fh) { | ||
1498 | mutex_unlock(&dev->open_lock); | ||
1499 | return -ENOMEM; | ||
1500 | } | ||
1501 | |||
1502 | file->private_data = fh; | ||
1503 | fh->dev = dev; | ||
1504 | fh->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | ||
1505 | fh->mode = dev->mode[cur_channel]; | ||
1506 | fh->fmt = dev->cur_fmt[cur_channel]; | ||
1507 | /* default 4CIF NTSC */ | ||
1508 | fh->width = LINE_SZ_4CIFS_NTSC; | ||
1509 | fh->height = NUM_LINES_4CIFS_NTSC * 2; | ||
1510 | fh->channel = cur_channel; | ||
1511 | |||
1512 | /* Put all controls at a sane state */ | ||
1513 | for (i = 0; i < ARRAY_SIZE(s2255_qctrl); i++) | ||
1514 | qctl_regs[i] = s2255_qctrl[i].default_value; | ||
1515 | |||
1516 | dprintk(1, "s2255drv: open minor=%d type=%s users=%d\n", | ||
1517 | minor, v4l2_type_names[type], dev->users[cur_channel]); | ||
1518 | dprintk(2, "s2255drv: open: fh=0x%08lx, dev=0x%08lx, vidq=0x%08lx\n", | ||
1519 | (unsigned long)fh, (unsigned long)dev, | ||
1520 | (unsigned long)&dev->vidq[cur_channel]); | ||
1521 | dprintk(4, "s2255drv: open: list_empty active=%d\n", | ||
1522 | list_empty(&dev->vidq[cur_channel].active)); | ||
1523 | |||
1524 | videobuf_queue_vmalloc_init(&fh->vb_vidq, &s2255_video_qops, | ||
1525 | NULL, &dev->slock, | ||
1526 | fh->type, | ||
1527 | V4L2_FIELD_INTERLACED, | ||
1528 | sizeof(struct s2255_buffer), fh); | ||
1529 | |||
1530 | kref_get(&dev->kref); | ||
1531 | mutex_unlock(&dev->open_lock); | ||
1532 | return 0; | ||
1533 | } | ||
1534 | |||
1535 | |||
1536 | static unsigned int s2255_poll(struct file *file, | ||
1537 | struct poll_table_struct *wait) | ||
1538 | { | ||
1539 | struct s2255_fh *fh = file->private_data; | ||
1540 | int rc; | ||
1541 | dprintk(100, "%s\n", __func__); | ||
1542 | |||
1543 | if (V4L2_BUF_TYPE_VIDEO_CAPTURE != fh->type) | ||
1544 | return POLLERR; | ||
1545 | |||
1546 | rc = videobuf_poll_stream(file, &fh->vb_vidq, wait); | ||
1547 | return rc; | ||
1548 | } | ||
1549 | |||
1550 | static void s2255_destroy(struct kref *kref) | ||
1551 | { | ||
1552 | struct s2255_dev *dev = to_s2255_dev(kref); | ||
1553 | if (!dev) { | ||
1554 | printk(KERN_ERR "s2255drv: kref problem\n"); | ||
1555 | return; | ||
1556 | } | ||
1557 | /* prevent s2255_disconnect from racing s2255_open */ | ||
1558 | mutex_lock(&dev->open_lock); | ||
1559 | s2255_exit_v4l(dev); | ||
1560 | /* device unregistered so no longer possible to open. open_mutex | ||
1561 | can be unlocked */ | ||
1562 | mutex_unlock(&dev->open_lock); | ||
1563 | |||
1564 | /* board shutdown stops the read pipe if it is running */ | ||
1565 | s2255_board_shutdown(dev); | ||
1566 | |||
1567 | /* make sure firmware still not trying to load */ | ||
1568 | if (dev->fw_data->fw_urb) { | ||
1569 | dprintk(2, "kill fw_urb\n"); | ||
1570 | usb_kill_urb(dev->fw_data->fw_urb); | ||
1571 | usb_free_urb(dev->fw_data->fw_urb); | ||
1572 | dev->fw_data->fw_urb = NULL; | ||
1573 | } | ||
1574 | |||
1575 | /* make sure we aren't waiting for the DSP */ | ||
1576 | if (atomic_read(&dev->fw_data->fw_state) == S2255_FW_LOADED_DSPWAIT) { | ||
1577 | /* if we are, wait for the wakeup for fw_success or timeout */ | ||
1578 | wait_event_timeout(dev->fw_data->wait_fw, | ||
1579 | (atomic_read(&dev->fw_data->fw_state) | ||
1580 | == S2255_FW_SUCCESS), | ||
1581 | msecs_to_jiffies(S2255_LOAD_TIMEOUT)); | ||
1582 | } | ||
1583 | |||
1584 | if (dev->fw_data) { | ||
1585 | kfree(dev->fw_data->pfw_data); | ||
1586 | kfree(dev->fw_data); | ||
1587 | } | ||
1588 | |||
1589 | if (dev->fw_data->fw) { | ||
1590 | release_firmware(dev->fw_data->fw); | ||
1591 | dev->fw_data->fw = NULL; | ||
1592 | } | ||
1593 | |||
1594 | usb_put_dev(dev->udev); | ||
1595 | dprintk(1, "%s", __func__); | ||
1596 | kfree(dev); | ||
1597 | } | ||
1598 | |||
1599 | static int s2255_close(struct inode *inode, struct file *file) | ||
1600 | { | ||
1601 | struct s2255_fh *fh = file->private_data; | ||
1602 | struct s2255_dev *dev = fh->dev; | ||
1603 | int minor = iminor(inode); | ||
1604 | if (!dev) | ||
1605 | return -ENODEV; | ||
1606 | |||
1607 | mutex_lock(&dev->open_lock); | ||
1608 | |||
1609 | if (dev->b_acquire[fh->channel]) | ||
1610 | s2255_stop_acquire(dev, fh->channel); | ||
1611 | res_free(dev, fh); | ||
1612 | videobuf_mmap_free(&fh->vb_vidq); | ||
1613 | kfree(fh); | ||
1614 | dev->users[fh->channel]--; | ||
1615 | mutex_unlock(&dev->open_lock); | ||
1616 | |||
1617 | kref_put(&dev->kref, s2255_destroy); | ||
1618 | dprintk(1, "s2255: close called (minor=%d, users=%d)\n", | ||
1619 | minor, dev->users[fh->channel]); | ||
1620 | return 0; | ||
1621 | } | ||
1622 | |||
1623 | static int s2255_mmap_v4l(struct file *file, struct vm_area_struct *vma) | ||
1624 | { | ||
1625 | struct s2255_fh *fh = file->private_data; | ||
1626 | int ret; | ||
1627 | |||
1628 | if (!fh) | ||
1629 | return -ENODEV; | ||
1630 | dprintk(4, "mmap called, vma=0x%08lx\n", (unsigned long)vma); | ||
1631 | |||
1632 | ret = videobuf_mmap_mapper(&fh->vb_vidq, vma); | ||
1633 | |||
1634 | dprintk(4, "vma start=0x%08lx, size=%ld, ret=%d\n", | ||
1635 | (unsigned long)vma->vm_start, | ||
1636 | (unsigned long)vma->vm_end - (unsigned long)vma->vm_start, ret); | ||
1637 | |||
1638 | return ret; | ||
1639 | } | ||
1640 | |||
1641 | static const struct file_operations s2255_fops_v4l = { | ||
1642 | .owner = THIS_MODULE, | ||
1643 | .open = s2255_open, | ||
1644 | .release = s2255_close, | ||
1645 | .poll = s2255_poll, | ||
1646 | .ioctl = video_ioctl2, /* V4L2 ioctl handler */ | ||
1647 | .compat_ioctl = v4l_compat_ioctl32, | ||
1648 | .mmap = s2255_mmap_v4l, | ||
1649 | .llseek = no_llseek, | ||
1650 | }; | ||
1651 | |||
1652 | static struct video_device template = { | ||
1653 | .name = "s2255v", | ||
1654 | .type = VID_TYPE_CAPTURE, | ||
1655 | .fops = &s2255_fops_v4l, | ||
1656 | .minor = -1, | ||
1657 | .release = video_device_release, | ||
1658 | .vidioc_querycap = vidioc_querycap, | ||
1659 | .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap, | ||
1660 | .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap, | ||
1661 | .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap, | ||
1662 | .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap, | ||
1663 | .vidioc_reqbufs = vidioc_reqbufs, | ||
1664 | .vidioc_querybuf = vidioc_querybuf, | ||
1665 | .vidioc_qbuf = vidioc_qbuf, | ||
1666 | .vidioc_dqbuf = vidioc_dqbuf, | ||
1667 | .vidioc_s_std = vidioc_s_std, | ||
1668 | .vidioc_enum_input = vidioc_enum_input, | ||
1669 | .vidioc_g_input = vidioc_g_input, | ||
1670 | .vidioc_s_input = vidioc_s_input, | ||
1671 | .vidioc_queryctrl = vidioc_queryctrl, | ||
1672 | .vidioc_g_ctrl = vidioc_g_ctrl, | ||
1673 | .vidioc_s_ctrl = vidioc_s_ctrl, | ||
1674 | .vidioc_streamon = vidioc_streamon, | ||
1675 | .vidioc_streamoff = vidioc_streamoff, | ||
1676 | #ifdef CONFIG_VIDEO_V4L1_COMPAT | ||
1677 | .vidiocgmbuf = vidioc_cgmbuf, | ||
1678 | #endif | ||
1679 | .tvnorms = S2255_NORMS, | ||
1680 | .current_norm = V4L2_STD_NTSC_M, | ||
1681 | }; | ||
1682 | |||
1683 | static int s2255_probe_v4l(struct s2255_dev *dev) | ||
1684 | { | ||
1685 | int ret; | ||
1686 | int i; | ||
1687 | int cur_nr = video_nr; | ||
1688 | |||
1689 | /* initialize all video 4 linux */ | ||
1690 | list_add_tail(&dev->s2255_devlist, &s2255_devlist); | ||
1691 | /* register 4 video devices */ | ||
1692 | for (i = 0; i < MAX_CHANNELS; i++) { | ||
1693 | INIT_LIST_HEAD(&dev->vidq[i].active); | ||
1694 | dev->vidq[i].dev = dev; | ||
1695 | dev->vidq[i].channel = i; | ||
1696 | dev->vidq[i].kthread = NULL; | ||
1697 | /* register 4 video devices */ | ||
1698 | dev->vdev[i] = video_device_alloc(); | ||
1699 | memcpy(dev->vdev[i], &template, sizeof(struct video_device)); | ||
1700 | dev->vdev[i]->dev = &dev->interface->dev; | ||
1701 | if (video_nr == -1) | ||
1702 | ret = video_register_device(dev->vdev[i], | ||
1703 | VFL_TYPE_GRABBER, | ||
1704 | video_nr); | ||
1705 | else | ||
1706 | ret = video_register_device(dev->vdev[i], | ||
1707 | VFL_TYPE_GRABBER, | ||
1708 | cur_nr + i); | ||
1709 | dev->vdev[i]->priv = dev; | ||
1710 | |||
1711 | if (ret != 0) { | ||
1712 | dev_err(&dev->udev->dev, | ||
1713 | "failed to register video device!\n"); | ||
1714 | return ret; | ||
1715 | } | ||
1716 | } | ||
1717 | printk(KERN_INFO "Sensoray 2255 V4L driver\n"); | ||
1718 | return ret; | ||
1719 | } | ||
1720 | |||
1721 | static void s2255_exit_v4l(struct s2255_dev *dev) | ||
1722 | { | ||
1723 | struct list_head *list; | ||
1724 | int i; | ||
1725 | /* unregister the video devices */ | ||
1726 | while (!list_empty(&s2255_devlist)) { | ||
1727 | list = s2255_devlist.next; | ||
1728 | list_del(list); | ||
1729 | } | ||
1730 | for (i = 0; i < MAX_CHANNELS; i++) { | ||
1731 | if (-1 != dev->vdev[i]->minor) | ||
1732 | video_unregister_device(dev->vdev[i]); | ||
1733 | else | ||
1734 | video_device_release(dev->vdev[i]); | ||
1735 | } | ||
1736 | } | ||
1737 | |||
1738 | /* this function moves the usb stream read pipe data | ||
1739 | * into the system buffers. | ||
1740 | * returns 0 on success, EAGAIN if more data to process( call this | ||
1741 | * function again). | ||
1742 | * | ||
1743 | * Received frame structure: | ||
1744 | * bytes 0-3: marker : 0x2255DA4AL (FRAME_MARKER) | ||
1745 | * bytes 4-7: channel: 0-3 | ||
1746 | * bytes 8-11: payload size: size of the frame | ||
1747 | * bytes 12-payloadsize+12: frame data | ||
1748 | */ | ||
1749 | static int save_frame(struct s2255_dev *dev, struct s2255_pipeinfo *pipe_info) | ||
1750 | { | ||
1751 | static int dbgsync; /* = 0; */ | ||
1752 | char *pdest; | ||
1753 | u32 offset = 0; | ||
1754 | int bsync = 0; | ||
1755 | int btrunc = 0; | ||
1756 | char *psrc; | ||
1757 | unsigned long copy_size; | ||
1758 | unsigned long size; | ||
1759 | s32 idx = -1; | ||
1760 | struct s2255_framei *frm; | ||
1761 | unsigned char *pdata; | ||
1762 | unsigned long cur_size; | ||
1763 | int bsearch = 0; | ||
1764 | struct s2255_bufferi *buf; | ||
1765 | dprintk(100, "buffer to user\n"); | ||
1766 | |||
1767 | idx = dev->cur_frame[dev->cc]; | ||
1768 | buf = &dev->buffer[dev->cc]; | ||
1769 | frm = &buf->frame[idx]; | ||
1770 | |||
1771 | if (frm->ulState == 0) { | ||
1772 | frm->ulState = 1; | ||
1773 | frm->cur_size = 0; | ||
1774 | bsearch = 1; | ||
1775 | } else if (frm->ulState == 2) { | ||
1776 | /* system frame was not freed */ | ||
1777 | dprintk(2, "sys frame not free. overrun ringbuf\n"); | ||
1778 | bsearch = 1; | ||
1779 | frm->ulState = 1; | ||
1780 | frm->cur_size = 0; | ||
1781 | } | ||
1782 | |||
1783 | if (bsearch) { | ||
1784 | if (*(s32 *) pipe_info->transfer_buffer != FRAME_MARKER) { | ||
1785 | u32 jj; | ||
1786 | if (dbgsync == 0) { | ||
1787 | dprintk(3, "not synched, discarding all packets" | ||
1788 | "until marker\n"); | ||
1789 | |||
1790 | dbgsync++; | ||
1791 | } | ||
1792 | pdata = (unsigned char *)pipe_info->transfer_buffer; | ||
1793 | for (jj = 0; jj < (pipe_info->cur_transfer_size - 12); | ||
1794 | jj++) { | ||
1795 | if (*(s32 *) pdata == FRAME_MARKER) { | ||
1796 | int cc; | ||
1797 | dprintk(3, | ||
1798 | "found frame marker at offset:" | ||
1799 | " %d [%x %x]\n", jj, pdata[0], | ||
1800 | pdata[1]); | ||
1801 | offset = jj; | ||
1802 | bsync = 1; | ||
1803 | cc = *(u32 *) (pdata + sizeof(u32)); | ||
1804 | if (cc >= MAX_CHANNELS) { | ||
1805 | printk(KERN_ERR | ||
1806 | "bad channel\n"); | ||
1807 | return -EINVAL; | ||
1808 | } | ||
1809 | /* reverse it */ | ||
1810 | dev->cc = G_chnmap[cc]; | ||
1811 | break; | ||
1812 | } | ||
1813 | pdata++; | ||
1814 | } | ||
1815 | if (bsync == 0) | ||
1816 | return -EINVAL; | ||
1817 | } else { | ||
1818 | u32 *pword; | ||
1819 | u32 payload; | ||
1820 | int cc; | ||
1821 | dbgsync = 0; | ||
1822 | bsync = 1; | ||
1823 | pword = (u32 *) pipe_info->transfer_buffer; | ||
1824 | cc = pword[1]; | ||
1825 | |||
1826 | if (cc >= MAX_CHANNELS) { | ||
1827 | printk("invalid channel found. " | ||
1828 | "throwing out data!\n"); | ||
1829 | return -EINVAL; | ||
1830 | } | ||
1831 | dev->cc = G_chnmap[cc]; | ||
1832 | payload = pword[2]; | ||
1833 | if (payload != dev->req_image_size[dev->cc]) { | ||
1834 | dprintk(1, "[%d][%d]unexpected payload: %d" | ||
1835 | "required: %lu \n", cc, dev->cc, | ||
1836 | payload, dev->req_image_size[dev->cc]); | ||
1837 | dev->bad_payload[dev->cc]++; | ||
1838 | /* discard the bad frame */ | ||
1839 | return -EINVAL; | ||
1840 | } | ||
1841 | |||
1842 | } | ||
1843 | } | ||
1844 | /* search done. now find out if should be acquiring | ||
1845 | on this channel */ | ||
1846 | if (!dev->b_acquire[dev->cc]) { | ||
1847 | frm->ulState = 0; | ||
1848 | return -EINVAL; | ||
1849 | } | ||
1850 | |||
1851 | idx = dev->cur_frame[dev->cc]; | ||
1852 | frm = &dev->buffer[dev->cc].frame[idx]; | ||
1853 | |||
1854 | if (frm->ulState == 0) { | ||
1855 | frm->ulState = 1; | ||
1856 | frm->cur_size = 0; | ||
1857 | } else if (frm->ulState == 2) { | ||
1858 | /* system frame ring buffer overrun */ | ||
1859 | dprintk(2, "sys frame overrun. overwriting frame %d %d\n", | ||
1860 | dev->cc, idx); | ||
1861 | frm->ulState = 1; | ||
1862 | frm->cur_size = 0; | ||
1863 | } | ||
1864 | |||
1865 | if (bsync) { | ||
1866 | /* skip the marker 512 bytes (and offset if out of sync) */ | ||
1867 | psrc = (u8 *)pipe_info->transfer_buffer + offset + PREFIX_SIZE; | ||
1868 | } else { | ||
1869 | psrc = (u8 *)pipe_info->transfer_buffer; | ||
1870 | } | ||
1871 | |||
1872 | if (frm->lpvbits == NULL) { | ||
1873 | dprintk(1, "s2255 frame buffer == NULL.%p %p %d %d", | ||
1874 | frm, dev, dev->cc, idx); | ||
1875 | return -ENOMEM; | ||
1876 | } | ||
1877 | |||
1878 | pdest = frm->lpvbits + frm->cur_size; | ||
1879 | |||
1880 | if (bsync) { | ||
1881 | copy_size = | ||
1882 | (pipe_info->cur_transfer_size - offset) - PREFIX_SIZE; | ||
1883 | if (copy_size > pipe_info->cur_transfer_size) { | ||
1884 | printk("invalid copy size, overflow!\n"); | ||
1885 | return -ENOMEM; | ||
1886 | } | ||
1887 | } else { | ||
1888 | copy_size = pipe_info->cur_transfer_size; | ||
1889 | } | ||
1890 | |||
1891 | cur_size = frm->cur_size; | ||
1892 | size = dev->req_image_size[dev->cc]; | ||
1893 | |||
1894 | if ((copy_size + cur_size) > size) { | ||
1895 | copy_size = size - cur_size; | ||
1896 | btrunc = 1; | ||
1897 | } | ||
1898 | |||
1899 | memcpy(pdest, psrc, copy_size); | ||
1900 | cur_size += copy_size; | ||
1901 | frm->cur_size += copy_size; | ||
1902 | dprintk(50, "cur_size size %lu size %lu \n", cur_size, size); | ||
1903 | |||
1904 | if (cur_size >= (size - PREFIX_SIZE)) { | ||
1905 | u32 cc = dev->cc; | ||
1906 | frm->ulState = 2; | ||
1907 | dprintk(2, "****************[%d]Buffer[%d]full*************\n", | ||
1908 | cc, idx); | ||
1909 | dev->last_frame[cc] = dev->cur_frame[cc]; | ||
1910 | dev->cur_frame[cc]++; | ||
1911 | /* end of system frame ring buffer, start at zero */ | ||
1912 | if ((dev->cur_frame[cc] == SYS_FRAMES) || | ||
1913 | (dev->cur_frame[cc] == dev->buffer[cc].dwFrames)) | ||
1914 | dev->cur_frame[cc] = 0; | ||
1915 | |||
1916 | /* signal the semaphore for this channel */ | ||
1917 | if (dev->b_acquire[cc]) | ||
1918 | s2255_got_frame(dev, cc); | ||
1919 | dev->frame_count[cc]++; | ||
1920 | } | ||
1921 | /* frame was truncated */ | ||
1922 | if (btrunc) { | ||
1923 | /* return more data to process */ | ||
1924 | return EAGAIN; | ||
1925 | } | ||
1926 | /* done successfully */ | ||
1927 | return 0; | ||
1928 | } | ||
1929 | |||
1930 | static void s2255_read_video_callback(struct s2255_dev *dev, | ||
1931 | struct s2255_pipeinfo *pipe_info) | ||
1932 | { | ||
1933 | int res; | ||
1934 | dprintk(50, "callback read video \n"); | ||
1935 | |||
1936 | if (dev->cc >= MAX_CHANNELS) { | ||
1937 | dev->cc = 0; | ||
1938 | dev_err(&dev->udev->dev, "invalid channel\n"); | ||
1939 | return; | ||
1940 | } | ||
1941 | /* otherwise copy to the system buffers */ | ||
1942 | res = save_frame(dev, pipe_info); | ||
1943 | if (res == EAGAIN) | ||
1944 | save_frame(dev, pipe_info); | ||
1945 | |||
1946 | dprintk(50, "callback read video done\n"); | ||
1947 | return; | ||
1948 | } | ||
1949 | |||
1950 | static long s2255_vendor_req(struct s2255_dev *dev, unsigned char Request, | ||
1951 | u16 Index, u16 Value, void *TransferBuffer, | ||
1952 | s32 TransferBufferLength, int bOut) | ||
1953 | { | ||
1954 | int r; | ||
1955 | if (!bOut) { | ||
1956 | r = usb_control_msg(dev->udev, usb_rcvctrlpipe(dev->udev, 0), | ||
1957 | Request, | ||
1958 | USB_TYPE_VENDOR | USB_RECIP_DEVICE | | ||
1959 | USB_DIR_IN, | ||
1960 | Value, Index, TransferBuffer, | ||
1961 | TransferBufferLength, HZ * 5); | ||
1962 | } else { | ||
1963 | r = usb_control_msg(dev->udev, usb_sndctrlpipe(dev->udev, 0), | ||
1964 | Request, USB_TYPE_VENDOR | USB_RECIP_DEVICE, | ||
1965 | Value, Index, TransferBuffer, | ||
1966 | TransferBufferLength, HZ * 5); | ||
1967 | } | ||
1968 | return r; | ||
1969 | } | ||
1970 | |||
1971 | /* | ||
1972 | * retrieve FX2 firmware version. future use. | ||
1973 | * @param dev pointer to device extension | ||
1974 | * @return -1 for fail, else returns firmware version as an int(16 bits) | ||
1975 | */ | ||
1976 | static int s2255_get_fx2fw(struct s2255_dev *dev) | ||
1977 | { | ||
1978 | int fw; | ||
1979 | int ret; | ||
1980 | unsigned char transBuffer[64]; | ||
1981 | ret = s2255_vendor_req(dev, S2255_VR_FW, 0, 0, transBuffer, 2, | ||
1982 | S2255_VR_IN); | ||
1983 | if (ret < 0) | ||
1984 | dprintk(2, "get fw error: %x\n", ret); | ||
1985 | fw = transBuffer[0] + (transBuffer[1] << 8); | ||
1986 | dprintk(2, "Get FW %x %x\n", transBuffer[0], transBuffer[1]); | ||
1987 | return fw; | ||
1988 | } | ||
1989 | |||
1990 | /* | ||
1991 | * Create the system ring buffer to copy frames into from the | ||
1992 | * usb read pipe. | ||
1993 | */ | ||
1994 | static int s2255_create_sys_buffers(struct s2255_dev *dev, unsigned long chn) | ||
1995 | { | ||
1996 | unsigned long i; | ||
1997 | unsigned long reqsize; | ||
1998 | dprintk(1, "create sys buffers\n"); | ||
1999 | if (chn >= MAX_CHANNELS) | ||
2000 | return -1; | ||
2001 | |||
2002 | dev->buffer[chn].dwFrames = SYS_FRAMES; | ||
2003 | |||
2004 | /* always allocate maximum size(PAL) for system buffers */ | ||
2005 | reqsize = SYS_FRAMES_MAXSIZE; | ||
2006 | |||
2007 | if (reqsize > SYS_FRAMES_MAXSIZE) | ||
2008 | reqsize = SYS_FRAMES_MAXSIZE; | ||
2009 | |||
2010 | for (i = 0; i < SYS_FRAMES; i++) { | ||
2011 | /* allocate the frames */ | ||
2012 | dev->buffer[chn].frame[i].lpvbits = vmalloc(reqsize); | ||
2013 | |||
2014 | dprintk(1, "valloc %p chan %lu, idx %lu, pdata %p\n", | ||
2015 | &dev->buffer[chn].frame[i], chn, i, | ||
2016 | dev->buffer[chn].frame[i].lpvbits); | ||
2017 | dev->buffer[chn].frame[i].size = reqsize; | ||
2018 | if (dev->buffer[chn].frame[i].lpvbits == NULL) { | ||
2019 | printk(KERN_INFO "out of memory. using less frames\n"); | ||
2020 | dev->buffer[chn].dwFrames = i; | ||
2021 | break; | ||
2022 | } | ||
2023 | } | ||
2024 | |||
2025 | /* make sure internal states are set */ | ||
2026 | for (i = 0; i < SYS_FRAMES; i++) { | ||
2027 | dev->buffer[chn].frame[i].ulState = 0; | ||
2028 | dev->buffer[chn].frame[i].cur_size = 0; | ||
2029 | } | ||
2030 | |||
2031 | dev->cur_frame[chn] = 0; | ||
2032 | dev->last_frame[chn] = -1; | ||
2033 | return 0; | ||
2034 | } | ||
2035 | |||
2036 | static int s2255_release_sys_buffers(struct s2255_dev *dev, | ||
2037 | unsigned long channel) | ||
2038 | { | ||
2039 | unsigned long i; | ||
2040 | dprintk(1, "release sys buffers\n"); | ||
2041 | for (i = 0; i < SYS_FRAMES; i++) { | ||
2042 | if (dev->buffer[channel].frame[i].lpvbits) { | ||
2043 | dprintk(1, "vfree %p\n", | ||
2044 | dev->buffer[channel].frame[i].lpvbits); | ||
2045 | vfree(dev->buffer[channel].frame[i].lpvbits); | ||
2046 | } | ||
2047 | dev->buffer[channel].frame[i].lpvbits = NULL; | ||
2048 | } | ||
2049 | return 0; | ||
2050 | } | ||
2051 | |||
2052 | static int s2255_board_init(struct s2255_dev *dev) | ||
2053 | { | ||
2054 | int j; | ||
2055 | struct s2255_mode mode_def = DEF_MODEI_NTSC_CONT; | ||
2056 | int fw_ver; | ||
2057 | dprintk(4, "board init: %p", dev); | ||
2058 | |||
2059 | for (j = 0; j < MAX_PIPE_BUFFERS; j++) { | ||
2060 | struct s2255_pipeinfo *pipe = &dev->pipes[j]; | ||
2061 | |||
2062 | memset(pipe, 0, sizeof(*pipe)); | ||
2063 | pipe->dev = dev; | ||
2064 | pipe->cur_transfer_size = DEFAULT_PIPE_USBBLOCK; | ||
2065 | pipe->max_transfer_size = MAX_PIPE_USBBLOCK; | ||
2066 | |||
2067 | if (pipe->cur_transfer_size > pipe->max_transfer_size) | ||
2068 | pipe->cur_transfer_size = pipe->max_transfer_size; | ||
2069 | pipe->transfer_buffer = kzalloc(pipe->max_transfer_size, | ||
2070 | GFP_KERNEL); | ||
2071 | if (pipe->transfer_buffer == NULL) { | ||
2072 | dprintk(1, "out of memory!\n"); | ||
2073 | return -ENOMEM; | ||
2074 | } | ||
2075 | |||
2076 | } | ||
2077 | |||
2078 | /* query the firmware */ | ||
2079 | fw_ver = s2255_get_fx2fw(dev); | ||
2080 | |||
2081 | printk(KERN_INFO "2255 usb firmware version %d \n", fw_ver); | ||
2082 | if (fw_ver < CUR_USB_FWVER) | ||
2083 | err("usb firmware not up to date %d\n", fw_ver); | ||
2084 | |||
2085 | for (j = 0; j < MAX_CHANNELS; j++) { | ||
2086 | dev->b_acquire[j] = 0; | ||
2087 | dev->mode[j] = mode_def; | ||
2088 | dev->cur_fmt[j] = &formats[0]; | ||
2089 | dev->mode[j].restart = 1; | ||
2090 | dev->req_image_size[j] = get_transfer_size(&mode_def); | ||
2091 | dev->frame_count[j] = 0; | ||
2092 | /* create the system buffers */ | ||
2093 | s2255_create_sys_buffers(dev, j); | ||
2094 | } | ||
2095 | /* start read pipe */ | ||
2096 | s2255_start_readpipe(dev); | ||
2097 | |||
2098 | dprintk(1, "S2255: board initialized\n"); | ||
2099 | return 0; | ||
2100 | } | ||
2101 | |||
2102 | static int s2255_board_shutdown(struct s2255_dev *dev) | ||
2103 | { | ||
2104 | u32 i; | ||
2105 | |||
2106 | dprintk(1, "S2255: board shutdown: %p", dev); | ||
2107 | |||
2108 | for (i = 0; i < MAX_CHANNELS; i++) { | ||
2109 | if (dev->b_acquire[i]) | ||
2110 | s2255_stop_acquire(dev, i); | ||
2111 | } | ||
2112 | |||
2113 | s2255_stop_readpipe(dev); | ||
2114 | |||
2115 | for (i = 0; i < MAX_CHANNELS; i++) | ||
2116 | s2255_release_sys_buffers(dev, i); | ||
2117 | |||
2118 | /* release transfer buffers */ | ||
2119 | for (i = 0; i < MAX_PIPE_BUFFERS; i++) { | ||
2120 | struct s2255_pipeinfo *pipe = &dev->pipes[i]; | ||
2121 | kfree(pipe->transfer_buffer); | ||
2122 | } | ||
2123 | return 0; | ||
2124 | } | ||
2125 | |||
2126 | static void read_pipe_completion(struct urb *purb) | ||
2127 | { | ||
2128 | struct s2255_pipeinfo *pipe_info; | ||
2129 | struct s2255_dev *dev; | ||
2130 | int status; | ||
2131 | int pipe; | ||
2132 | |||
2133 | pipe_info = purb->context; | ||
2134 | dprintk(100, "read pipe completion %p, status %d\n", purb, | ||
2135 | purb->status); | ||
2136 | if (pipe_info == NULL) { | ||
2137 | err("no context !"); | ||
2138 | return; | ||
2139 | } | ||
2140 | |||
2141 | dev = pipe_info->dev; | ||
2142 | if (dev == NULL) { | ||
2143 | err("no context !"); | ||
2144 | return; | ||
2145 | } | ||
2146 | status = purb->status; | ||
2147 | if (status != 0) { | ||
2148 | dprintk(2, "read_pipe_completion: err\n"); | ||
2149 | return; | ||
2150 | } | ||
2151 | |||
2152 | if (pipe_info->state == 0) { | ||
2153 | dprintk(2, "exiting USB pipe"); | ||
2154 | return; | ||
2155 | } | ||
2156 | |||
2157 | s2255_read_video_callback(dev, pipe_info); | ||
2158 | |||
2159 | pipe_info->err_count = 0; | ||
2160 | pipe = usb_rcvbulkpipe(dev->udev, dev->read_endpoint); | ||
2161 | /* reuse urb */ | ||
2162 | usb_fill_bulk_urb(pipe_info->stream_urb, dev->udev, | ||
2163 | pipe, | ||
2164 | pipe_info->transfer_buffer, | ||
2165 | pipe_info->cur_transfer_size, | ||
2166 | read_pipe_completion, pipe_info); | ||
2167 | |||
2168 | if (pipe_info->state != 0) { | ||
2169 | if (usb_submit_urb(pipe_info->stream_urb, GFP_KERNEL)) { | ||
2170 | dev_err(&dev->udev->dev, "error submitting urb\n"); | ||
2171 | usb_free_urb(pipe_info->stream_urb); | ||
2172 | } | ||
2173 | } else { | ||
2174 | dprintk(2, "read pipe complete state 0\n"); | ||
2175 | } | ||
2176 | return; | ||
2177 | } | ||
2178 | |||
2179 | static int s2255_start_readpipe(struct s2255_dev *dev) | ||
2180 | { | ||
2181 | int pipe; | ||
2182 | int retval; | ||
2183 | int i; | ||
2184 | struct s2255_pipeinfo *pipe_info = dev->pipes; | ||
2185 | pipe = usb_rcvbulkpipe(dev->udev, dev->read_endpoint); | ||
2186 | dprintk(2, "start pipe IN %d\n", dev->read_endpoint); | ||
2187 | |||
2188 | for (i = 0; i < MAX_PIPE_BUFFERS; i++) { | ||
2189 | pipe_info->state = 1; | ||
2190 | pipe_info->buf_index = (u32) i; | ||
2191 | pipe_info->priority_set = 0; | ||
2192 | pipe_info->stream_urb = usb_alloc_urb(0, GFP_KERNEL); | ||
2193 | if (!pipe_info->stream_urb) { | ||
2194 | dev_err(&dev->udev->dev, | ||
2195 | "ReadStream: Unable to alloc URB"); | ||
2196 | return -ENOMEM; | ||
2197 | } | ||
2198 | /* transfer buffer allocated in board_init */ | ||
2199 | usb_fill_bulk_urb(pipe_info->stream_urb, dev->udev, | ||
2200 | pipe, | ||
2201 | pipe_info->transfer_buffer, | ||
2202 | pipe_info->cur_transfer_size, | ||
2203 | read_pipe_completion, pipe_info); | ||
2204 | |||
2205 | pipe_info->urb_size = sizeof(pipe_info->stream_urb); | ||
2206 | dprintk(4, "submitting URB %p\n", pipe_info->stream_urb); | ||
2207 | retval = usb_submit_urb(pipe_info->stream_urb, GFP_KERNEL); | ||
2208 | if (retval) { | ||
2209 | printk(KERN_ERR "s2255: start read pipe failed\n"); | ||
2210 | return retval; | ||
2211 | } | ||
2212 | } | ||
2213 | |||
2214 | return 0; | ||
2215 | } | ||
2216 | |||
2217 | /* starts acquisition process */ | ||
2218 | static int s2255_start_acquire(struct s2255_dev *dev, unsigned long chn) | ||
2219 | { | ||
2220 | unsigned char *buffer; | ||
2221 | int res; | ||
2222 | unsigned long chn_rev; | ||
2223 | int j; | ||
2224 | if (chn >= MAX_CHANNELS) { | ||
2225 | dprintk(2, "start acquire failed, bad channel %lu\n", chn); | ||
2226 | return -1; | ||
2227 | } | ||
2228 | |||
2229 | chn_rev = G_chnmap[chn]; | ||
2230 | dprintk(1, "S2255: start acquire %lu \n", chn); | ||
2231 | |||
2232 | buffer = kzalloc(512, GFP_KERNEL); | ||
2233 | if (buffer == NULL) { | ||
2234 | dev_err(&dev->udev->dev, "out of mem\n"); | ||
2235 | return -ENOMEM; | ||
2236 | } | ||
2237 | |||
2238 | dev->last_frame[chn] = -1; | ||
2239 | dev->bad_payload[chn] = 0; | ||
2240 | dev->cur_frame[chn] = 0; | ||
2241 | for (j = 0; j < SYS_FRAMES; j++) { | ||
2242 | dev->buffer[chn].frame[j].ulState = 0; | ||
2243 | dev->buffer[chn].frame[j].cur_size = 0; | ||
2244 | } | ||
2245 | |||
2246 | /* send the start command */ | ||
2247 | *(u32 *) buffer = IN_DATA_TOKEN; | ||
2248 | *((u32 *) buffer + 1) = (u32) chn_rev; | ||
2249 | *((u32 *) buffer + 2) = (u32) CMD_START; | ||
2250 | res = s2255_write_config(dev->udev, (unsigned char *)buffer, 512); | ||
2251 | if (res != 0) | ||
2252 | dev_err(&dev->udev->dev, "CMD_START error\n"); | ||
2253 | |||
2254 | dprintk(2, "start acquire exit[%lu] %d \n", chn, res); | ||
2255 | kfree(buffer); | ||
2256 | return 0; | ||
2257 | } | ||
2258 | |||
2259 | static int s2255_stop_acquire(struct s2255_dev *dev, unsigned long chn) | ||
2260 | { | ||
2261 | unsigned char *buffer; | ||
2262 | int res; | ||
2263 | unsigned long chn_rev; | ||
2264 | |||
2265 | if (chn >= MAX_CHANNELS) { | ||
2266 | dprintk(2, "stop acquire failed, bad channel %lu\n", chn); | ||
2267 | return -1; | ||
2268 | } | ||
2269 | chn_rev = G_chnmap[chn]; | ||
2270 | |||
2271 | buffer = kzalloc(512, GFP_KERNEL); | ||
2272 | if (buffer == NULL) { | ||
2273 | dev_err(&dev->udev->dev, "out of mem\n"); | ||
2274 | return -ENOMEM; | ||
2275 | } | ||
2276 | |||
2277 | /* send the stop command */ | ||
2278 | dprintk(4, "stop acquire %lu\n", chn); | ||
2279 | *(u32 *) buffer = IN_DATA_TOKEN; | ||
2280 | *((u32 *) buffer + 1) = (u32) chn_rev; | ||
2281 | *((u32 *) buffer + 2) = CMD_STOP; | ||
2282 | res = s2255_write_config(dev->udev, (unsigned char *)buffer, 512); | ||
2283 | |||
2284 | if (res != 0) | ||
2285 | dev_err(&dev->udev->dev, "CMD_STOP error\n"); | ||
2286 | |||
2287 | dprintk(4, "stop acquire: releasing states \n"); | ||
2288 | |||
2289 | kfree(buffer); | ||
2290 | dev->b_acquire[chn] = 0; | ||
2291 | |||
2292 | return 0; | ||
2293 | } | ||
2294 | |||
2295 | static void s2255_stop_readpipe(struct s2255_dev *dev) | ||
2296 | { | ||
2297 | int j; | ||
2298 | |||
2299 | if (dev == NULL) { | ||
2300 | err("s2255: invalid device"); | ||
2301 | return; | ||
2302 | } | ||
2303 | dprintk(4, "stop read pipe\n"); | ||
2304 | for (j = 0; j < MAX_PIPE_BUFFERS; j++) { | ||
2305 | struct s2255_pipeinfo *pipe_info = &dev->pipes[j]; | ||
2306 | if (pipe_info) { | ||
2307 | if (pipe_info->state == 0) | ||
2308 | continue; | ||
2309 | pipe_info->state = 0; | ||
2310 | pipe_info->prev_state = 1; | ||
2311 | |||
2312 | } | ||
2313 | } | ||
2314 | |||
2315 | for (j = 0; j < MAX_PIPE_BUFFERS; j++) { | ||
2316 | struct s2255_pipeinfo *pipe_info = &dev->pipes[j]; | ||
2317 | if (pipe_info->stream_urb) { | ||
2318 | /* cancel urb */ | ||
2319 | usb_kill_urb(pipe_info->stream_urb); | ||
2320 | usb_free_urb(pipe_info->stream_urb); | ||
2321 | pipe_info->stream_urb = NULL; | ||
2322 | } | ||
2323 | } | ||
2324 | dprintk(2, "s2255 stop read pipe: %d\n", j); | ||
2325 | return; | ||
2326 | } | ||
2327 | |||
2328 | static void s2255_fwload_start(struct s2255_dev *dev) | ||
2329 | { | ||
2330 | dev->fw_data->fw_size = dev->fw_data->fw->size; | ||
2331 | atomic_set(&dev->fw_data->fw_state, S2255_FW_NOTLOADED); | ||
2332 | memcpy(dev->fw_data->pfw_data, | ||
2333 | dev->fw_data->fw->data, CHUNK_SIZE); | ||
2334 | dev->fw_data->fw_loaded = CHUNK_SIZE; | ||
2335 | usb_fill_bulk_urb(dev->fw_data->fw_urb, dev->udev, | ||
2336 | usb_sndbulkpipe(dev->udev, 2), | ||
2337 | dev->fw_data->pfw_data, | ||
2338 | CHUNK_SIZE, s2255_fwchunk_complete, | ||
2339 | dev->fw_data); | ||
2340 | mod_timer(&dev->timer, jiffies + HZ); | ||
2341 | } | ||
2342 | |||
2343 | /* standard usb probe function */ | ||
2344 | static int s2255_probe(struct usb_interface *interface, | ||
2345 | const struct usb_device_id *id) | ||
2346 | { | ||
2347 | struct s2255_dev *dev = NULL; | ||
2348 | struct usb_host_interface *iface_desc; | ||
2349 | struct usb_endpoint_descriptor *endpoint; | ||
2350 | int i; | ||
2351 | int retval = -ENOMEM; | ||
2352 | |||
2353 | dprintk(2, "s2255: probe\n"); | ||
2354 | |||
2355 | /* allocate memory for our device state and initialize it to zero */ | ||
2356 | dev = kzalloc(sizeof(struct s2255_dev), GFP_KERNEL); | ||
2357 | if (dev == NULL) { | ||
2358 | err("s2255: out of memory"); | ||
2359 | goto error; | ||
2360 | } | ||
2361 | |||
2362 | dev->fw_data = kzalloc(sizeof(struct s2255_fw), GFP_KERNEL); | ||
2363 | if (!dev->fw_data) | ||
2364 | goto error; | ||
2365 | |||
2366 | mutex_init(&dev->lock); | ||
2367 | mutex_init(&dev->open_lock); | ||
2368 | |||
2369 | /* grab usb_device and save it */ | ||
2370 | dev->udev = usb_get_dev(interface_to_usbdev(interface)); | ||
2371 | if (dev->udev == NULL) { | ||
2372 | dev_err(&interface->dev, "null usb device\n"); | ||
2373 | retval = -ENODEV; | ||
2374 | goto error; | ||
2375 | } | ||
2376 | kref_init(&dev->kref); | ||
2377 | dprintk(1, "dev: %p, kref: %p udev %p interface %p\n", dev, &dev->kref, | ||
2378 | dev->udev, interface); | ||
2379 | dev->interface = interface; | ||
2380 | /* set up the endpoint information */ | ||
2381 | iface_desc = interface->cur_altsetting; | ||
2382 | dprintk(1, "num endpoints %d\n", iface_desc->desc.bNumEndpoints); | ||
2383 | for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) { | ||
2384 | endpoint = &iface_desc->endpoint[i].desc; | ||
2385 | if (!dev->read_endpoint && usb_endpoint_is_bulk_in(endpoint)) { | ||
2386 | /* we found the bulk in endpoint */ | ||
2387 | dev->read_endpoint = endpoint->bEndpointAddress; | ||
2388 | } | ||
2389 | } | ||
2390 | |||
2391 | if (!dev->read_endpoint) { | ||
2392 | dev_err(&interface->dev, "Could not find bulk-in endpoint"); | ||
2393 | goto error; | ||
2394 | } | ||
2395 | |||
2396 | /* set intfdata */ | ||
2397 | usb_set_intfdata(interface, dev); | ||
2398 | |||
2399 | dprintk(100, "after intfdata %p\n", dev); | ||
2400 | |||
2401 | init_timer(&dev->timer); | ||
2402 | dev->timer.function = s2255_timer; | ||
2403 | dev->timer.data = (unsigned long)dev->fw_data; | ||
2404 | |||
2405 | init_waitqueue_head(&dev->fw_data->wait_fw); | ||
2406 | |||
2407 | |||
2408 | dev->fw_data->fw_urb = usb_alloc_urb(0, GFP_KERNEL); | ||
2409 | |||
2410 | if (!dev->fw_data->fw_urb) { | ||
2411 | dev_err(&interface->dev, "out of memory!\n"); | ||
2412 | goto error; | ||
2413 | } | ||
2414 | dev->fw_data->pfw_data = kzalloc(CHUNK_SIZE, GFP_KERNEL); | ||
2415 | if (!dev->fw_data->pfw_data) { | ||
2416 | dev_err(&interface->dev, "out of memory!\n"); | ||
2417 | goto error; | ||
2418 | } | ||
2419 | /* load the first chunk */ | ||
2420 | if (request_firmware(&dev->fw_data->fw, | ||
2421 | FIRMWARE_FILE_NAME, &dev->udev->dev)) { | ||
2422 | printk(KERN_ERR "sensoray 2255 failed to get firmware\n"); | ||
2423 | goto error; | ||
2424 | } | ||
2425 | |||
2426 | /* loads v4l specific */ | ||
2427 | s2255_probe_v4l(dev); | ||
2428 | /* load 2255 board specific */ | ||
2429 | s2255_board_init(dev); | ||
2430 | |||
2431 | dprintk(4, "before probe done %p\n", dev); | ||
2432 | spin_lock_init(&dev->slock); | ||
2433 | |||
2434 | s2255_fwload_start(dev); | ||
2435 | dev_info(&interface->dev, "Sensoray 2255 detected\n"); | ||
2436 | return 0; | ||
2437 | error: | ||
2438 | return retval; | ||
2439 | } | ||
2440 | |||
2441 | /* disconnect routine. when board is removed physically or with rmmod */ | ||
2442 | static void s2255_disconnect(struct usb_interface *interface) | ||
2443 | { | ||
2444 | struct s2255_dev *dev = NULL; | ||
2445 | dprintk(1, "s2255: disconnect interface %p\n", interface); | ||
2446 | dev = usb_get_intfdata(interface); | ||
2447 | if (dev) { | ||
2448 | kref_put(&dev->kref, s2255_destroy); | ||
2449 | dprintk(1, "s2255drv: disconnect\n"); | ||
2450 | dev_info(&interface->dev, "s2255usb now disconnected\n"); | ||
2451 | } | ||
2452 | usb_set_intfdata(interface, NULL); | ||
2453 | } | ||
2454 | |||
2455 | static struct usb_driver s2255_driver = { | ||
2456 | .name = "s2255", | ||
2457 | .probe = s2255_probe, | ||
2458 | .disconnect = s2255_disconnect, | ||
2459 | .id_table = s2255_table, | ||
2460 | }; | ||
2461 | |||
2462 | static int __init usb_s2255_init(void) | ||
2463 | { | ||
2464 | int result; | ||
2465 | |||
2466 | /* register this driver with the USB subsystem */ | ||
2467 | result = usb_register(&s2255_driver); | ||
2468 | |||
2469 | if (result) | ||
2470 | err("usb_register failed. Error number %d", result); | ||
2471 | |||
2472 | dprintk(2, "s2255_init: done\n"); | ||
2473 | return result; | ||
2474 | } | ||
2475 | |||
2476 | static void __exit usb_s2255_exit(void) | ||
2477 | { | ||
2478 | usb_deregister(&s2255_driver); | ||
2479 | } | ||
2480 | |||
2481 | module_init(usb_s2255_init); | ||
2482 | module_exit(usb_s2255_exit); | ||
2483 | |||
2484 | MODULE_DESCRIPTION("Sensoray 2255 Video for Linux driver"); | ||
2485 | MODULE_AUTHOR("Dean Anderson (Sensoray Company Inc.)"); | ||
2486 | MODULE_LICENSE("GPL"); | ||