]>
Commit | Line | Data |
---|---|---|
7ce08c93 LR |
1 | /*************************************************************************** |
2 | * V4L2 driver for ET61X[12]51 PC Camera Controllers * | |
3 | * * | |
26563127 | 4 | * Copyright (C) 2006-2007 by Luca Risolia <luca.risolia@studio.unibo.it> * |
7ce08c93 LR |
5 | * * |
6 | * This program is free software; you can redistribute it and/or modify * | |
7 | * it under the terms of the GNU General Public License as published by * | |
8 | * the Free Software Foundation; either version 2 of the License, or * | |
9 | * (at your option) any later version. * | |
10 | * * | |
11 | * This program is distributed in the hope that it will be useful, * | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of * | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * | |
14 | * GNU General Public License for more details. * | |
15 | * * | |
16 | * You should have received a copy of the GNU General Public License * | |
17 | * along with this program; if not, write to the Free Software * | |
18 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. * | |
19 | ***************************************************************************/ | |
20 | ||
857011e4 JP |
21 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
22 | ||
5204ceba | 23 | #include <linux/version.h> |
7ce08c93 LR |
24 | #include <linux/module.h> |
25 | #include <linux/init.h> | |
26 | #include <linux/kernel.h> | |
27 | #include <linux/param.h> | |
7ce08c93 LR |
28 | #include <linux/errno.h> |
29 | #include <linux/slab.h> | |
7ce08c93 LR |
30 | #include <linux/device.h> |
31 | #include <linux/fs.h> | |
32 | #include <linux/delay.h> | |
7ce08c93 LR |
33 | #include <linux/compiler.h> |
34 | #include <linux/ioctl.h> | |
35 | #include <linux/poll.h> | |
36 | #include <linux/stat.h> | |
37 | #include <linux/mm.h> | |
38 | #include <linux/vmalloc.h> | |
39 | #include <linux/page-flags.h> | |
35ea11ff | 40 | #include <media/v4l2-ioctl.h> |
9a6ab769 | 41 | #include <asm/byteorder.h> |
7ce08c93 LR |
42 | #include <asm/page.h> |
43 | #include <asm/uaccess.h> | |
44 | ||
45 | #include "et61x251.h" | |
46 | ||
47 | /*****************************************************************************/ | |
48 | ||
49 | #define ET61X251_MODULE_NAME "V4L2 driver for ET61X[12]51 " \ | |
d56410e0 | 50 | "PC Camera Controllers" |
3b2ae0be | 51 | #define ET61X251_MODULE_AUTHOR "(C) 2006-2007 Luca Risolia" |
7ce08c93 LR |
52 | #define ET61X251_AUTHOR_EMAIL "<luca.risolia@studio.unibo.it>" |
53 | #define ET61X251_MODULE_LICENSE "GPL" | |
5204ceba | 54 | #define ET61X251_MODULE_VERSION "1.1.10" |
7ce08c93 LR |
55 | |
56 | /*****************************************************************************/ | |
57 | ||
58 | MODULE_DEVICE_TABLE(usb, et61x251_id_table); | |
59 | ||
60 | MODULE_AUTHOR(ET61X251_MODULE_AUTHOR " " ET61X251_AUTHOR_EMAIL); | |
61 | MODULE_DESCRIPTION(ET61X251_MODULE_NAME); | |
62 | MODULE_VERSION(ET61X251_MODULE_VERSION); | |
63 | MODULE_LICENSE(ET61X251_MODULE_LICENSE); | |
64 | ||
65 | static short video_nr[] = {[0 ... ET61X251_MAX_DEVICES-1] = -1}; | |
66 | module_param_array(video_nr, short, NULL, 0444); | |
67 | MODULE_PARM_DESC(video_nr, | |
d56410e0 MCC |
68 | "\n<-1|n[,...]> Specify V4L2 minor mode number." |
69 | "\n -1 = use next available (default)" | |
70 | "\n n = use minor number n (integer >= 0)" | |
71 | "\nYou can specify up to " | |
72 | __MODULE_STRING(ET61X251_MAX_DEVICES) " cameras this way." | |
73 | "\nFor example:" | |
74 | "\nvideo_nr=-1,2,-1 would assign minor number 2 to" | |
75 | "\nthe second registered camera and use auto for the first" | |
76 | "\none and for every other camera." | |
77 | "\n"); | |
7ce08c93 LR |
78 | |
79 | static short force_munmap[] = {[0 ... ET61X251_MAX_DEVICES-1] = | |
d56410e0 | 80 | ET61X251_FORCE_MUNMAP}; |
7ce08c93 LR |
81 | module_param_array(force_munmap, bool, NULL, 0444); |
82 | MODULE_PARM_DESC(force_munmap, | |
d56410e0 MCC |
83 | "\n<0|1[,...]> Force the application to unmap previously" |
84 | "\nmapped buffer memory before calling any VIDIOC_S_CROP or" | |
85 | "\nVIDIOC_S_FMT ioctl's. Not all the applications support" | |
86 | "\nthis feature. This parameter is specific for each" | |
87 | "\ndetected camera." | |
88 | "\n 0 = do not force memory unmapping" | |
89 | "\n 1 = force memory unmapping (save memory)" | |
26563127 | 90 | "\nDefault value is "__MODULE_STRING(ET61X251_FORCE_MUNMAP)"." |
d56410e0 | 91 | "\n"); |
7ce08c93 | 92 | |
ccad7789 | 93 | static unsigned int frame_timeout[] = {[0 ... ET61X251_MAX_DEVICES-1] = |
d56410e0 | 94 | ET61X251_FRAME_TIMEOUT}; |
ccad7789 LR |
95 | module_param_array(frame_timeout, uint, NULL, 0644); |
96 | MODULE_PARM_DESC(frame_timeout, | |
d56410e0 MCC |
97 | "\n<n[,...]> Timeout for a video frame in seconds." |
98 | "\nThis parameter is specific for each detected camera." | |
99 | "\nDefault value is " | |
100 | __MODULE_STRING(ET61X251_FRAME_TIMEOUT)"." | |
101 | "\n"); | |
ccad7789 | 102 | |
7ce08c93 LR |
103 | #ifdef ET61X251_DEBUG |
104 | static unsigned short debug = ET61X251_DEBUG_LEVEL; | |
105 | module_param(debug, ushort, 0644); | |
106 | MODULE_PARM_DESC(debug, | |
d56410e0 MCC |
107 | "\n<n> Debugging information level, from 0 to 3:" |
108 | "\n0 = none (use carefully)" | |
109 | "\n1 = critical errors" | |
110 | "\n2 = significant informations" | |
111 | "\n3 = more verbose messages" | |
112 | "\nLevel 3 is useful for testing only, when only " | |
113 | "one device is used." | |
114 | "\nDefault value is "__MODULE_STRING(ET61X251_DEBUG_LEVEL)"." | |
115 | "\n"); | |
7ce08c93 LR |
116 | #endif |
117 | ||
118 | /*****************************************************************************/ | |
119 | ||
120 | static u32 | |
121 | et61x251_request_buffers(struct et61x251_device* cam, u32 count, | |
d56410e0 | 122 | enum et61x251_io_method io) |
7ce08c93 | 123 | { |
ccad7789 LR |
124 | struct v4l2_pix_format* p = &(cam->sensor.pix_format); |
125 | struct v4l2_rect* r = &(cam->sensor.cropcap.bounds); | |
7ce08c93 | 126 | const size_t imagesize = cam->module_param.force_munmap || |
d56410e0 MCC |
127 | io == IO_READ ? |
128 | (p->width * p->height * p->priv) / 8 : | |
129 | (r->width * r->height * p->priv) / 8; | |
7ce08c93 LR |
130 | void* buff = NULL; |
131 | u32 i; | |
132 | ||
133 | if (count > ET61X251_MAX_FRAMES) | |
134 | count = ET61X251_MAX_FRAMES; | |
135 | ||
136 | cam->nbuffers = count; | |
137 | while (cam->nbuffers > 0) { | |
26563127 LR |
138 | if ((buff = vmalloc_32_user(cam->nbuffers * |
139 | PAGE_ALIGN(imagesize)))) | |
7ce08c93 LR |
140 | break; |
141 | cam->nbuffers--; | |
142 | } | |
143 | ||
144 | for (i = 0; i < cam->nbuffers; i++) { | |
145 | cam->frame[i].bufmem = buff + i*PAGE_ALIGN(imagesize); | |
146 | cam->frame[i].buf.index = i; | |
147 | cam->frame[i].buf.m.offset = i*PAGE_ALIGN(imagesize); | |
148 | cam->frame[i].buf.length = imagesize; | |
149 | cam->frame[i].buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
150 | cam->frame[i].buf.sequence = 0; | |
151 | cam->frame[i].buf.field = V4L2_FIELD_NONE; | |
152 | cam->frame[i].buf.memory = V4L2_MEMORY_MMAP; | |
153 | cam->frame[i].buf.flags = 0; | |
154 | } | |
155 | ||
156 | return cam->nbuffers; | |
157 | } | |
158 | ||
159 | ||
160 | static void et61x251_release_buffers(struct et61x251_device* cam) | |
161 | { | |
162 | if (cam->nbuffers) { | |
163 | vfree(cam->frame[0].bufmem); | |
164 | cam->nbuffers = 0; | |
165 | } | |
166 | cam->frame_current = NULL; | |
167 | } | |
168 | ||
169 | ||
170 | static void et61x251_empty_framequeues(struct et61x251_device* cam) | |
171 | { | |
172 | u32 i; | |
173 | ||
174 | INIT_LIST_HEAD(&cam->inqueue); | |
175 | INIT_LIST_HEAD(&cam->outqueue); | |
176 | ||
177 | for (i = 0; i < ET61X251_MAX_FRAMES; i++) { | |
178 | cam->frame[i].state = F_UNUSED; | |
179 | cam->frame[i].buf.bytesused = 0; | |
180 | } | |
181 | } | |
182 | ||
183 | ||
184 | static void et61x251_requeue_outqueue(struct et61x251_device* cam) | |
185 | { | |
186 | struct et61x251_frame_t *i; | |
187 | ||
188 | list_for_each_entry(i, &cam->outqueue, frame) { | |
189 | i->state = F_QUEUED; | |
190 | list_add(&i->frame, &cam->inqueue); | |
191 | } | |
192 | ||
193 | INIT_LIST_HEAD(&cam->outqueue); | |
194 | } | |
195 | ||
196 | ||
197 | static void et61x251_queue_unusedframes(struct et61x251_device* cam) | |
198 | { | |
199 | unsigned long lock_flags; | |
200 | u32 i; | |
201 | ||
202 | for (i = 0; i < cam->nbuffers; i++) | |
203 | if (cam->frame[i].state == F_UNUSED) { | |
204 | cam->frame[i].state = F_QUEUED; | |
205 | spin_lock_irqsave(&cam->queue_lock, lock_flags); | |
206 | list_add_tail(&cam->frame[i].frame, &cam->inqueue); | |
207 | spin_unlock_irqrestore(&cam->queue_lock, lock_flags); | |
208 | } | |
209 | } | |
210 | ||
211 | /*****************************************************************************/ | |
212 | ||
213 | int et61x251_write_reg(struct et61x251_device* cam, u8 value, u16 index) | |
214 | { | |
215 | struct usb_device* udev = cam->usbdev; | |
216 | u8* buff = cam->control_buffer; | |
217 | int res; | |
218 | ||
219 | *buff = value; | |
220 | ||
221 | res = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x00, 0x41, | |
d56410e0 | 222 | 0, index, buff, 1, ET61X251_CTRL_TIMEOUT); |
7ce08c93 LR |
223 | if (res < 0) { |
224 | DBG(3, "Failed to write a register (value 0x%02X, index " | |
225 | "0x%02X, error %d)", value, index, res); | |
226 | return -1; | |
227 | } | |
228 | ||
229 | return 0; | |
230 | } | |
231 | ||
232 | ||
f760d618 | 233 | static int et61x251_read_reg(struct et61x251_device* cam, u16 index) |
7ce08c93 LR |
234 | { |
235 | struct usb_device* udev = cam->usbdev; | |
236 | u8* buff = cam->control_buffer; | |
237 | int res; | |
238 | ||
239 | res = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x00, 0xc1, | |
d56410e0 | 240 | 0, index, buff, 1, ET61X251_CTRL_TIMEOUT); |
7ce08c93 LR |
241 | if (res < 0) |
242 | DBG(3, "Failed to read a register (index 0x%02X, error %d)", | |
243 | index, res); | |
244 | ||
245 | return (res >= 0) ? (int)(*buff) : -1; | |
246 | } | |
247 | ||
248 | ||
249 | static int | |
3b2ae0be LR |
250 | et61x251_i2c_wait(struct et61x251_device* cam, |
251 | const struct et61x251_sensor* sensor) | |
7ce08c93 LR |
252 | { |
253 | int i, r; | |
254 | ||
255 | for (i = 1; i <= 8; i++) { | |
256 | if (sensor->interface == ET61X251_I2C_3WIRES) { | |
257 | r = et61x251_read_reg(cam, 0x8e); | |
258 | if (!(r & 0x02) && (r >= 0)) | |
259 | return 0; | |
260 | } else { | |
261 | r = et61x251_read_reg(cam, 0x8b); | |
262 | if (!(r & 0x01) && (r >= 0)) | |
263 | return 0; | |
264 | } | |
265 | if (r < 0) | |
266 | return -EIO; | |
267 | udelay(8*8); /* minimum for sensors at 400kHz */ | |
268 | } | |
269 | ||
270 | return -EBUSY; | |
271 | } | |
272 | ||
273 | ||
7ce08c93 LR |
274 | int |
275 | et61x251_i2c_raw_write(struct et61x251_device* cam, u8 n, u8 data1, u8 data2, | |
d56410e0 MCC |
276 | u8 data3, u8 data4, u8 data5, u8 data6, u8 data7, |
277 | u8 data8, u8 address) | |
7ce08c93 LR |
278 | { |
279 | struct usb_device* udev = cam->usbdev; | |
280 | u8* data = cam->control_buffer; | |
281 | int err = 0, res; | |
282 | ||
7ce08c93 LR |
283 | data[0] = data2; |
284 | data[1] = data3; | |
285 | data[2] = data4; | |
286 | data[3] = data5; | |
287 | data[4] = data6; | |
288 | data[5] = data7; | |
289 | data[6] = data8; | |
290 | res = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x00, 0x41, | |
d56410e0 | 291 | 0, 0x81, data, n-1, ET61X251_CTRL_TIMEOUT); |
7ce08c93 LR |
292 | if (res < 0) |
293 | err += res; | |
294 | ||
295 | data[0] = address; | |
ccad7789 LR |
296 | data[1] = cam->sensor.i2c_slave_id; |
297 | data[2] = cam->sensor.rsta | 0x02 | (n << 4); | |
7ce08c93 | 298 | res = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x00, 0x41, |
d56410e0 | 299 | 0, 0x88, data, 3, ET61X251_CTRL_TIMEOUT); |
7ce08c93 LR |
300 | if (res < 0) |
301 | err += res; | |
302 | ||
303 | /* Start writing through the serial interface */ | |
304 | data[0] = data1; | |
305 | res = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x00, 0x41, | |
d56410e0 | 306 | 0, 0x80, data, 1, ET61X251_CTRL_TIMEOUT); |
7ce08c93 LR |
307 | if (res < 0) |
308 | err += res; | |
309 | ||
ccad7789 | 310 | err += et61x251_i2c_wait(cam, &cam->sensor); |
7ce08c93 LR |
311 | |
312 | if (err) | |
313 | DBG(3, "I2C raw write failed for %s image sensor", | |
ccad7789 | 314 | cam->sensor.name); |
7ce08c93 LR |
315 | |
316 | PDBGG("I2C raw write: %u bytes, address = 0x%02X, data1 = 0x%02X, " | |
317 | "data2 = 0x%02X, data3 = 0x%02X, data4 = 0x%02X, data5 = 0x%02X," | |
318 | " data6 = 0x%02X, data7 = 0x%02X, data8 = 0x%02X", n, address, | |
319 | data1, data2, data3, data4, data5, data6, data7, data8); | |
320 | ||
321 | return err ? -1 : 0; | |
322 | ||
323 | } | |
324 | ||
325 | ||
7ce08c93 LR |
326 | /*****************************************************************************/ |
327 | ||
7d12e780 | 328 | static void et61x251_urb_complete(struct urb *urb) |
7ce08c93 LR |
329 | { |
330 | struct et61x251_device* cam = urb->context; | |
331 | struct et61x251_frame_t** f; | |
332 | size_t imagesize; | |
333 | u8 i; | |
334 | int err = 0; | |
335 | ||
336 | if (urb->status == -ENOENT) | |
337 | return; | |
338 | ||
339 | f = &cam->frame_current; | |
340 | ||
341 | if (cam->stream == STREAM_INTERRUPT) { | |
342 | cam->stream = STREAM_OFF; | |
343 | if ((*f)) | |
344 | (*f)->state = F_QUEUED; | |
345 | DBG(3, "Stream interrupted"); | |
ccad7789 | 346 | wake_up(&cam->wait_stream); |
7ce08c93 LR |
347 | } |
348 | ||
349 | if (cam->state & DEV_DISCONNECTED) | |
350 | return; | |
351 | ||
352 | if (cam->state & DEV_MISCONFIGURED) { | |
353 | wake_up_interruptible(&cam->wait_frame); | |
354 | return; | |
355 | } | |
356 | ||
357 | if (cam->stream == STREAM_OFF || list_empty(&cam->inqueue)) | |
358 | goto resubmit_urb; | |
359 | ||
360 | if (!(*f)) | |
361 | (*f) = list_entry(cam->inqueue.next, struct et61x251_frame_t, | |
d56410e0 | 362 | frame); |
7ce08c93 | 363 | |
ccad7789 | 364 | imagesize = (cam->sensor.pix_format.width * |
d56410e0 MCC |
365 | cam->sensor.pix_format.height * |
366 | cam->sensor.pix_format.priv) / 8; | |
7ce08c93 LR |
367 | |
368 | for (i = 0; i < urb->number_of_packets; i++) { | |
369 | unsigned int len, status; | |
370 | void *pos; | |
371 | u8* b1, * b2, sof; | |
372 | const u8 VOID_BYTES = 6; | |
373 | size_t imglen; | |
374 | ||
375 | len = urb->iso_frame_desc[i].actual_length; | |
376 | status = urb->iso_frame_desc[i].status; | |
377 | pos = urb->iso_frame_desc[i].offset + urb->transfer_buffer; | |
378 | ||
379 | if (status) { | |
380 | DBG(3, "Error in isochronous frame"); | |
381 | (*f)->state = F_ERROR; | |
382 | continue; | |
383 | } | |
384 | ||
385 | b1 = pos++; | |
386 | b2 = pos++; | |
387 | sof = ((*b1 & 0x3f) == 63); | |
388 | imglen = ((*b1 & 0xc0) << 2) | *b2; | |
389 | ||
390 | PDBGG("Isochrnous frame: length %u, #%u i, image length %zu", | |
391 | len, i, imglen); | |
392 | ||
393 | if ((*f)->state == F_QUEUED || (*f)->state == F_ERROR) | |
394 | start_of_frame: | |
395 | if (sof) { | |
396 | (*f)->state = F_GRABBING; | |
397 | (*f)->buf.bytesused = 0; | |
398 | do_gettimeofday(&(*f)->buf.timestamp); | |
399 | pos += 22; | |
400 | DBG(3, "SOF detected: new video frame"); | |
401 | } | |
402 | ||
403 | if ((*f)->state == F_GRABBING) { | |
404 | if (sof && (*f)->buf.bytesused) { | |
ccad7789 | 405 | if (cam->sensor.pix_format.pixelformat == |
d56410e0 | 406 | V4L2_PIX_FMT_ET61X251) |
7ce08c93 LR |
407 | goto end_of_frame; |
408 | else { | |
409 | DBG(3, "Not expected SOF detected " | |
410 | "after %lu bytes", | |
411 | (unsigned long)(*f)->buf.bytesused); | |
412 | (*f)->state = F_ERROR; | |
413 | continue; | |
414 | } | |
415 | } | |
416 | ||
417 | if ((*f)->buf.bytesused + imglen > imagesize) { | |
418 | DBG(3, "Video frame size exceeded"); | |
419 | (*f)->state = F_ERROR; | |
420 | continue; | |
421 | } | |
422 | ||
423 | pos += VOID_BYTES; | |
424 | ||
425 | memcpy((*f)->bufmem+(*f)->buf.bytesused, pos, imglen); | |
426 | (*f)->buf.bytesused += imglen; | |
427 | ||
428 | if ((*f)->buf.bytesused == imagesize) { | |
429 | u32 b; | |
430 | end_of_frame: | |
431 | b = (*f)->buf.bytesused; | |
432 | (*f)->state = F_DONE; | |
433 | (*f)->buf.sequence= ++cam->frame_count; | |
434 | spin_lock(&cam->queue_lock); | |
435 | list_move_tail(&(*f)->frame, &cam->outqueue); | |
436 | if (!list_empty(&cam->inqueue)) | |
437 | (*f) = list_entry(cam->inqueue.next, | |
d56410e0 MCC |
438 | struct et61x251_frame_t, |
439 | frame); | |
7ce08c93 LR |
440 | else |
441 | (*f) = NULL; | |
442 | spin_unlock(&cam->queue_lock); | |
443 | DBG(3, "Video frame captured: : %lu bytes", | |
444 | (unsigned long)(b)); | |
445 | ||
446 | if (!(*f)) | |
447 | goto resubmit_urb; | |
448 | ||
449 | if (sof && | |
ccad7789 | 450 | cam->sensor.pix_format.pixelformat == |
d56410e0 | 451 | V4L2_PIX_FMT_ET61X251) |
7ce08c93 LR |
452 | goto start_of_frame; |
453 | } | |
454 | } | |
455 | } | |
456 | ||
457 | resubmit_urb: | |
458 | urb->dev = cam->usbdev; | |
459 | err = usb_submit_urb(urb, GFP_ATOMIC); | |
460 | if (err < 0 && err != -EPERM) { | |
461 | cam->state |= DEV_MISCONFIGURED; | |
462 | DBG(1, "usb_submit_urb() failed"); | |
463 | } | |
464 | ||
465 | wake_up_interruptible(&cam->wait_frame); | |
466 | } | |
467 | ||
468 | ||
469 | static int et61x251_start_transfer(struct et61x251_device* cam) | |
470 | { | |
471 | struct usb_device *udev = cam->usbdev; | |
472 | struct urb* urb; | |
26563127 LR |
473 | struct usb_host_interface* altsetting = usb_altnum_to_altsetting( |
474 | usb_ifnum_to_if(udev, 0), | |
475 | ET61X251_ALTERNATE_SETTING); | |
476 | const unsigned int psz = le16_to_cpu(altsetting-> | |
477 | endpoint[0].desc.wMaxPacketSize); | |
7ce08c93 LR |
478 | s8 i, j; |
479 | int err = 0; | |
480 | ||
481 | for (i = 0; i < ET61X251_URBS; i++) { | |
482 | cam->transfer_buffer[i] = kzalloc(ET61X251_ISO_PACKETS * psz, | |
d56410e0 | 483 | GFP_KERNEL); |
7ce08c93 LR |
484 | if (!cam->transfer_buffer[i]) { |
485 | err = -ENOMEM; | |
486 | DBG(1, "Not enough memory"); | |
487 | goto free_buffers; | |
488 | } | |
489 | } | |
490 | ||
491 | for (i = 0; i < ET61X251_URBS; i++) { | |
492 | urb = usb_alloc_urb(ET61X251_ISO_PACKETS, GFP_KERNEL); | |
493 | cam->urb[i] = urb; | |
494 | if (!urb) { | |
495 | err = -ENOMEM; | |
496 | DBG(1, "usb_alloc_urb() failed"); | |
497 | goto free_urbs; | |
498 | } | |
499 | urb->dev = udev; | |
500 | urb->context = cam; | |
501 | urb->pipe = usb_rcvisocpipe(udev, 1); | |
502 | urb->transfer_flags = URB_ISO_ASAP; | |
503 | urb->number_of_packets = ET61X251_ISO_PACKETS; | |
504 | urb->complete = et61x251_urb_complete; | |
505 | urb->transfer_buffer = cam->transfer_buffer[i]; | |
506 | urb->transfer_buffer_length = psz * ET61X251_ISO_PACKETS; | |
507 | urb->interval = 1; | |
508 | for (j = 0; j < ET61X251_ISO_PACKETS; j++) { | |
509 | urb->iso_frame_desc[j].offset = psz * j; | |
510 | urb->iso_frame_desc[j].length = psz; | |
511 | } | |
512 | } | |
513 | ||
514 | err = et61x251_write_reg(cam, 0x01, 0x03); | |
515 | err = et61x251_write_reg(cam, 0x00, 0x03); | |
516 | err = et61x251_write_reg(cam, 0x08, 0x03); | |
517 | if (err) { | |
518 | err = -EIO; | |
519 | DBG(1, "I/O hardware error"); | |
520 | goto free_urbs; | |
521 | } | |
522 | ||
523 | err = usb_set_interface(udev, 0, ET61X251_ALTERNATE_SETTING); | |
524 | if (err) { | |
525 | DBG(1, "usb_set_interface() failed"); | |
526 | goto free_urbs; | |
527 | } | |
528 | ||
529 | cam->frame_current = NULL; | |
530 | ||
531 | for (i = 0; i < ET61X251_URBS; i++) { | |
532 | err = usb_submit_urb(cam->urb[i], GFP_KERNEL); | |
533 | if (err) { | |
534 | for (j = i-1; j >= 0; j--) | |
535 | usb_kill_urb(cam->urb[j]); | |
536 | DBG(1, "usb_submit_urb() failed, error %d", err); | |
537 | goto free_urbs; | |
538 | } | |
539 | } | |
540 | ||
541 | return 0; | |
542 | ||
543 | free_urbs: | |
3b2ae0be | 544 | for (i = 0; (i < ET61X251_URBS) && cam->urb[i]; i++) |
7ce08c93 LR |
545 | usb_free_urb(cam->urb[i]); |
546 | ||
547 | free_buffers: | |
548 | for (i = 0; (i < ET61X251_URBS) && cam->transfer_buffer[i]; i++) | |
549 | kfree(cam->transfer_buffer[i]); | |
550 | ||
551 | return err; | |
552 | } | |
553 | ||
554 | ||
555 | static int et61x251_stop_transfer(struct et61x251_device* cam) | |
556 | { | |
557 | struct usb_device *udev = cam->usbdev; | |
558 | s8 i; | |
559 | int err = 0; | |
560 | ||
561 | if (cam->state & DEV_DISCONNECTED) | |
562 | return 0; | |
563 | ||
564 | for (i = ET61X251_URBS-1; i >= 0; i--) { | |
565 | usb_kill_urb(cam->urb[i]); | |
566 | usb_free_urb(cam->urb[i]); | |
567 | kfree(cam->transfer_buffer[i]); | |
568 | } | |
569 | ||
570 | err = usb_set_interface(udev, 0, 0); /* 0 Mb/s */ | |
571 | if (err) | |
572 | DBG(3, "usb_set_interface() failed"); | |
573 | ||
574 | return err; | |
575 | } | |
576 | ||
577 | ||
578 | static int et61x251_stream_interrupt(struct et61x251_device* cam) | |
579 | { | |
ccad7789 | 580 | long timeout; |
7ce08c93 LR |
581 | |
582 | cam->stream = STREAM_INTERRUPT; | |
ccad7789 | 583 | timeout = wait_event_timeout(cam->wait_stream, |
d56410e0 MCC |
584 | (cam->stream == STREAM_OFF) || |
585 | (cam->state & DEV_DISCONNECTED), | |
586 | ET61X251_URB_TIMEOUT); | |
7ce08c93 LR |
587 | if (cam->state & DEV_DISCONNECTED) |
588 | return -ENODEV; | |
ccad7789 | 589 | else if (cam->stream != STREAM_OFF) { |
7ce08c93 LR |
590 | cam->state |= DEV_MISCONFIGURED; |
591 | DBG(1, "URB timeout reached. The camera is misconfigured. To " | |
38c7c036 LP |
592 | "use it, close and open %s again.", |
593 | video_device_node_name(cam->v4ldev)); | |
ccad7789 | 594 | return -EIO; |
7ce08c93 LR |
595 | } |
596 | ||
597 | return 0; | |
598 | } | |
599 | ||
600 | /*****************************************************************************/ | |
601 | ||
602 | #ifdef CONFIG_VIDEO_ADV_DEBUG | |
7cd355e7 AM |
603 | |
604 | static int et61x251_i2c_try_read(struct et61x251_device* cam, | |
605 | const struct et61x251_sensor* sensor, | |
606 | u8 address) | |
607 | { | |
608 | struct usb_device* udev = cam->usbdev; | |
609 | u8* data = cam->control_buffer; | |
610 | int err = 0, res; | |
611 | ||
612 | data[0] = address; | |
613 | data[1] = cam->sensor.i2c_slave_id; | |
614 | data[2] = cam->sensor.rsta | 0x10; | |
615 | data[3] = !(et61x251_read_reg(cam, 0x8b) & 0x02); | |
616 | res = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x00, 0x41, | |
617 | 0, 0x88, data, 4, ET61X251_CTRL_TIMEOUT); | |
618 | if (res < 0) | |
619 | err += res; | |
620 | ||
621 | err += et61x251_i2c_wait(cam, sensor); | |
622 | ||
623 | res = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x00, 0xc1, | |
624 | 0, 0x80, data, 8, ET61X251_CTRL_TIMEOUT); | |
625 | if (res < 0) | |
626 | err += res; | |
627 | ||
628 | if (err) | |
629 | DBG(3, "I2C read failed for %s image sensor", sensor->name); | |
630 | ||
631 | PDBGG("I2C read: address 0x%02X, value: 0x%02X", address, data[0]); | |
632 | ||
633 | return err ? -1 : (int)data[0]; | |
634 | } | |
635 | ||
636 | ||
637 | static int et61x251_i2c_try_write(struct et61x251_device* cam, | |
638 | const struct et61x251_sensor* sensor, | |
639 | u8 address, u8 value) | |
640 | { | |
641 | struct usb_device* udev = cam->usbdev; | |
642 | u8* data = cam->control_buffer; | |
643 | int err = 0, res; | |
644 | ||
645 | data[0] = address; | |
646 | data[1] = cam->sensor.i2c_slave_id; | |
647 | data[2] = cam->sensor.rsta | 0x12; | |
648 | res = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x00, 0x41, | |
649 | 0, 0x88, data, 3, ET61X251_CTRL_TIMEOUT); | |
650 | if (res < 0) | |
651 | err += res; | |
652 | ||
653 | data[0] = value; | |
654 | res = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x00, 0x41, | |
655 | 0, 0x80, data, 1, ET61X251_CTRL_TIMEOUT); | |
656 | if (res < 0) | |
657 | err += res; | |
658 | ||
659 | err += et61x251_i2c_wait(cam, sensor); | |
660 | ||
661 | if (err) | |
662 | DBG(3, "I2C write failed for %s image sensor", sensor->name); | |
663 | ||
664 | PDBGG("I2C write: address 0x%02X, value: 0x%02X", address, value); | |
665 | ||
666 | return err ? -1 : 0; | |
667 | } | |
668 | ||
669 | static int et61x251_i2c_read(struct et61x251_device* cam, u8 address) | |
670 | { | |
671 | return et61x251_i2c_try_read(cam, &cam->sensor, address); | |
672 | } | |
673 | ||
674 | static int et61x251_i2c_write(struct et61x251_device* cam, | |
675 | u8 address, u8 value) | |
676 | { | |
677 | return et61x251_i2c_try_write(cam, &cam->sensor, address, value); | |
678 | } | |
679 | ||
7ce08c93 LR |
680 | static u8 et61x251_strtou8(const char* buff, size_t len, ssize_t* count) |
681 | { | |
682 | char str[5]; | |
683 | char* endp; | |
684 | unsigned long val; | |
685 | ||
686 | if (len < 4) { | |
687 | strncpy(str, buff, len); | |
3b2ae0be | 688 | str[len] = '\0'; |
7ce08c93 LR |
689 | } else { |
690 | strncpy(str, buff, 4); | |
691 | str[4] = '\0'; | |
692 | } | |
693 | ||
694 | val = simple_strtoul(str, &endp, 0); | |
695 | ||
696 | *count = 0; | |
697 | if (val <= 0xff) | |
698 | *count = (ssize_t)(endp - str); | |
699 | if ((*count) && (len == *count+1) && (buff[*count] == '\n')) | |
700 | *count += 1; | |
701 | ||
702 | return (u8)val; | |
703 | } | |
704 | ||
705 | /* | |
706 | NOTE 1: being inside one of the following methods implies that the v4l | |
d56410e0 | 707 | device exists for sure (see kobjects and reference counters) |
7ce08c93 LR |
708 | NOTE 2: buffers are PAGE_SIZE long |
709 | */ | |
710 | ||
54bd5b66 KS |
711 | static ssize_t et61x251_show_reg(struct device* cd, |
712 | struct device_attribute *attr, char* buf) | |
7ce08c93 LR |
713 | { |
714 | struct et61x251_device* cam; | |
715 | ssize_t count; | |
716 | ||
ccad7789 | 717 | if (mutex_lock_interruptible(&et61x251_sysfs_lock)) |
7ce08c93 LR |
718 | return -ERESTARTSYS; |
719 | ||
720 | cam = video_get_drvdata(to_video_device(cd)); | |
721 | if (!cam) { | |
ccad7789 | 722 | mutex_unlock(&et61x251_sysfs_lock); |
7ce08c93 LR |
723 | return -ENODEV; |
724 | } | |
725 | ||
726 | count = sprintf(buf, "%u\n", cam->sysfs.reg); | |
727 | ||
ccad7789 | 728 | mutex_unlock(&et61x251_sysfs_lock); |
7ce08c93 LR |
729 | |
730 | return count; | |
731 | } | |
732 | ||
733 | ||
734 | static ssize_t | |
54bd5b66 KS |
735 | et61x251_store_reg(struct device* cd, |
736 | struct device_attribute *attr, const char* buf, size_t len) | |
7ce08c93 LR |
737 | { |
738 | struct et61x251_device* cam; | |
739 | u8 index; | |
740 | ssize_t count; | |
741 | ||
ccad7789 | 742 | if (mutex_lock_interruptible(&et61x251_sysfs_lock)) |
7ce08c93 LR |
743 | return -ERESTARTSYS; |
744 | ||
745 | cam = video_get_drvdata(to_video_device(cd)); | |
746 | if (!cam) { | |
ccad7789 | 747 | mutex_unlock(&et61x251_sysfs_lock); |
7ce08c93 LR |
748 | return -ENODEV; |
749 | } | |
750 | ||
751 | index = et61x251_strtou8(buf, len, &count); | |
752 | if (index > 0x8e || !count) { | |
ccad7789 | 753 | mutex_unlock(&et61x251_sysfs_lock); |
7ce08c93 LR |
754 | return -EINVAL; |
755 | } | |
756 | ||
757 | cam->sysfs.reg = index; | |
758 | ||
759 | DBG(2, "Moved ET61X[12]51 register index to 0x%02X", cam->sysfs.reg); | |
760 | DBG(3, "Written bytes: %zd", count); | |
761 | ||
ccad7789 | 762 | mutex_unlock(&et61x251_sysfs_lock); |
7ce08c93 LR |
763 | |
764 | return count; | |
765 | } | |
766 | ||
767 | ||
54bd5b66 KS |
768 | static ssize_t et61x251_show_val(struct device* cd, |
769 | struct device_attribute *attr, char* buf) | |
7ce08c93 LR |
770 | { |
771 | struct et61x251_device* cam; | |
772 | ssize_t count; | |
773 | int val; | |
774 | ||
ccad7789 | 775 | if (mutex_lock_interruptible(&et61x251_sysfs_lock)) |
7ce08c93 LR |
776 | return -ERESTARTSYS; |
777 | ||
778 | cam = video_get_drvdata(to_video_device(cd)); | |
779 | if (!cam) { | |
ccad7789 | 780 | mutex_unlock(&et61x251_sysfs_lock); |
7ce08c93 LR |
781 | return -ENODEV; |
782 | } | |
783 | ||
784 | if ((val = et61x251_read_reg(cam, cam->sysfs.reg)) < 0) { | |
ccad7789 | 785 | mutex_unlock(&et61x251_sysfs_lock); |
7ce08c93 LR |
786 | return -EIO; |
787 | } | |
788 | ||
789 | count = sprintf(buf, "%d\n", val); | |
790 | ||
791 | DBG(3, "Read bytes: %zd", count); | |
792 | ||
ccad7789 | 793 | mutex_unlock(&et61x251_sysfs_lock); |
7ce08c93 LR |
794 | |
795 | return count; | |
796 | } | |
797 | ||
798 | ||
799 | static ssize_t | |
54bd5b66 KS |
800 | et61x251_store_val(struct device* cd, struct device_attribute *attr, |
801 | const char* buf, size_t len) | |
7ce08c93 LR |
802 | { |
803 | struct et61x251_device* cam; | |
804 | u8 value; | |
805 | ssize_t count; | |
806 | int err; | |
807 | ||
ccad7789 | 808 | if (mutex_lock_interruptible(&et61x251_sysfs_lock)) |
7ce08c93 LR |
809 | return -ERESTARTSYS; |
810 | ||
811 | cam = video_get_drvdata(to_video_device(cd)); | |
812 | if (!cam) { | |
ccad7789 | 813 | mutex_unlock(&et61x251_sysfs_lock); |
7ce08c93 LR |
814 | return -ENODEV; |
815 | } | |
816 | ||
817 | value = et61x251_strtou8(buf, len, &count); | |
818 | if (!count) { | |
ccad7789 | 819 | mutex_unlock(&et61x251_sysfs_lock); |
7ce08c93 LR |
820 | return -EINVAL; |
821 | } | |
822 | ||
823 | err = et61x251_write_reg(cam, value, cam->sysfs.reg); | |
824 | if (err) { | |
ccad7789 | 825 | mutex_unlock(&et61x251_sysfs_lock); |
7ce08c93 LR |
826 | return -EIO; |
827 | } | |
828 | ||
829 | DBG(2, "Written ET61X[12]51 reg. 0x%02X, val. 0x%02X", | |
830 | cam->sysfs.reg, value); | |
831 | DBG(3, "Written bytes: %zd", count); | |
832 | ||
ccad7789 | 833 | mutex_unlock(&et61x251_sysfs_lock); |
7ce08c93 LR |
834 | |
835 | return count; | |
836 | } | |
837 | ||
838 | ||
54bd5b66 KS |
839 | static ssize_t et61x251_show_i2c_reg(struct device* cd, |
840 | struct device_attribute *attr, char* buf) | |
7ce08c93 LR |
841 | { |
842 | struct et61x251_device* cam; | |
843 | ssize_t count; | |
844 | ||
ccad7789 | 845 | if (mutex_lock_interruptible(&et61x251_sysfs_lock)) |
7ce08c93 LR |
846 | return -ERESTARTSYS; |
847 | ||
848 | cam = video_get_drvdata(to_video_device(cd)); | |
849 | if (!cam) { | |
ccad7789 | 850 | mutex_unlock(&et61x251_sysfs_lock); |
7ce08c93 LR |
851 | return -ENODEV; |
852 | } | |
853 | ||
854 | count = sprintf(buf, "%u\n", cam->sysfs.i2c_reg); | |
855 | ||
856 | DBG(3, "Read bytes: %zd", count); | |
857 | ||
ccad7789 | 858 | mutex_unlock(&et61x251_sysfs_lock); |
7ce08c93 LR |
859 | |
860 | return count; | |
861 | } | |
862 | ||
863 | ||
864 | static ssize_t | |
54bd5b66 KS |
865 | et61x251_store_i2c_reg(struct device* cd, struct device_attribute *attr, |
866 | const char* buf, size_t len) | |
7ce08c93 LR |
867 | { |
868 | struct et61x251_device* cam; | |
869 | u8 index; | |
870 | ssize_t count; | |
871 | ||
ccad7789 | 872 | if (mutex_lock_interruptible(&et61x251_sysfs_lock)) |
7ce08c93 LR |
873 | return -ERESTARTSYS; |
874 | ||
875 | cam = video_get_drvdata(to_video_device(cd)); | |
876 | if (!cam) { | |
ccad7789 | 877 | mutex_unlock(&et61x251_sysfs_lock); |
7ce08c93 LR |
878 | return -ENODEV; |
879 | } | |
880 | ||
881 | index = et61x251_strtou8(buf, len, &count); | |
882 | if (!count) { | |
ccad7789 | 883 | mutex_unlock(&et61x251_sysfs_lock); |
7ce08c93 LR |
884 | return -EINVAL; |
885 | } | |
886 | ||
887 | cam->sysfs.i2c_reg = index; | |
888 | ||
889 | DBG(2, "Moved sensor register index to 0x%02X", cam->sysfs.i2c_reg); | |
890 | DBG(3, "Written bytes: %zd", count); | |
891 | ||
ccad7789 | 892 | mutex_unlock(&et61x251_sysfs_lock); |
7ce08c93 LR |
893 | |
894 | return count; | |
895 | } | |
896 | ||
897 | ||
54bd5b66 KS |
898 | static ssize_t et61x251_show_i2c_val(struct device* cd, |
899 | struct device_attribute *attr, char* buf) | |
7ce08c93 LR |
900 | { |
901 | struct et61x251_device* cam; | |
902 | ssize_t count; | |
903 | int val; | |
904 | ||
ccad7789 | 905 | if (mutex_lock_interruptible(&et61x251_sysfs_lock)) |
7ce08c93 LR |
906 | return -ERESTARTSYS; |
907 | ||
908 | cam = video_get_drvdata(to_video_device(cd)); | |
909 | if (!cam) { | |
ccad7789 | 910 | mutex_unlock(&et61x251_sysfs_lock); |
7ce08c93 LR |
911 | return -ENODEV; |
912 | } | |
913 | ||
ccad7789 LR |
914 | if (!(cam->sensor.sysfs_ops & ET61X251_I2C_READ)) { |
915 | mutex_unlock(&et61x251_sysfs_lock); | |
7ce08c93 LR |
916 | return -ENOSYS; |
917 | } | |
918 | ||
919 | if ((val = et61x251_i2c_read(cam, cam->sysfs.i2c_reg)) < 0) { | |
ccad7789 | 920 | mutex_unlock(&et61x251_sysfs_lock); |
7ce08c93 LR |
921 | return -EIO; |
922 | } | |
923 | ||
924 | count = sprintf(buf, "%d\n", val); | |
925 | ||
926 | DBG(3, "Read bytes: %zd", count); | |
927 | ||
ccad7789 | 928 | mutex_unlock(&et61x251_sysfs_lock); |
7ce08c93 LR |
929 | |
930 | return count; | |
931 | } | |
932 | ||
933 | ||
934 | static ssize_t | |
54bd5b66 KS |
935 | et61x251_store_i2c_val(struct device* cd, struct device_attribute *attr, |
936 | const char* buf, size_t len) | |
7ce08c93 LR |
937 | { |
938 | struct et61x251_device* cam; | |
939 | u8 value; | |
940 | ssize_t count; | |
941 | int err; | |
942 | ||
ccad7789 | 943 | if (mutex_lock_interruptible(&et61x251_sysfs_lock)) |
7ce08c93 LR |
944 | return -ERESTARTSYS; |
945 | ||
946 | cam = video_get_drvdata(to_video_device(cd)); | |
947 | if (!cam) { | |
ccad7789 | 948 | mutex_unlock(&et61x251_sysfs_lock); |
7ce08c93 LR |
949 | return -ENODEV; |
950 | } | |
951 | ||
ccad7789 LR |
952 | if (!(cam->sensor.sysfs_ops & ET61X251_I2C_READ)) { |
953 | mutex_unlock(&et61x251_sysfs_lock); | |
7ce08c93 LR |
954 | return -ENOSYS; |
955 | } | |
956 | ||
957 | value = et61x251_strtou8(buf, len, &count); | |
958 | if (!count) { | |
ccad7789 | 959 | mutex_unlock(&et61x251_sysfs_lock); |
7ce08c93 LR |
960 | return -EINVAL; |
961 | } | |
962 | ||
963 | err = et61x251_i2c_write(cam, cam->sysfs.i2c_reg, value); | |
964 | if (err) { | |
ccad7789 | 965 | mutex_unlock(&et61x251_sysfs_lock); |
7ce08c93 LR |
966 | return -EIO; |
967 | } | |
968 | ||
969 | DBG(2, "Written sensor reg. 0x%02X, val. 0x%02X", | |
970 | cam->sysfs.i2c_reg, value); | |
971 | DBG(3, "Written bytes: %zd", count); | |
972 | ||
ccad7789 | 973 | mutex_unlock(&et61x251_sysfs_lock); |
7ce08c93 LR |
974 | |
975 | return count; | |
976 | } | |
977 | ||
978 | ||
54bd5b66 KS |
979 | static DEVICE_ATTR(reg, S_IRUGO | S_IWUSR, |
980 | et61x251_show_reg, et61x251_store_reg); | |
981 | static DEVICE_ATTR(val, S_IRUGO | S_IWUSR, | |
982 | et61x251_show_val, et61x251_store_val); | |
983 | static DEVICE_ATTR(i2c_reg, S_IRUGO | S_IWUSR, | |
984 | et61x251_show_i2c_reg, et61x251_store_i2c_reg); | |
985 | static DEVICE_ATTR(i2c_val, S_IRUGO | S_IWUSR, | |
986 | et61x251_show_i2c_val, et61x251_store_i2c_val); | |
7ce08c93 LR |
987 | |
988 | ||
c12e3be0 | 989 | static int et61x251_create_sysfs(struct et61x251_device* cam) |
7ce08c93 | 990 | { |
22a04f10 | 991 | struct device *classdev = &(cam->v4ldev->dev); |
26563127 LR |
992 | int err = 0; |
993 | ||
54bd5b66 | 994 | if ((err = device_create_file(classdev, &dev_attr_reg))) |
26563127 | 995 | goto err_out; |
54bd5b66 | 996 | if ((err = device_create_file(classdev, &dev_attr_val))) |
26563127 | 997 | goto err_reg; |
7ce08c93 | 998 | |
ccad7789 | 999 | if (cam->sensor.sysfs_ops) { |
54bd5b66 | 1000 | if ((err = device_create_file(classdev, &dev_attr_i2c_reg))) |
26563127 | 1001 | goto err_val; |
54bd5b66 | 1002 | if ((err = device_create_file(classdev, &dev_attr_i2c_val))) |
26563127 | 1003 | goto err_i2c_reg; |
7ce08c93 | 1004 | } |
c12e3be0 | 1005 | |
c12e3be0 | 1006 | err_i2c_reg: |
26563127 | 1007 | if (cam->sensor.sysfs_ops) |
54bd5b66 | 1008 | device_remove_file(classdev, &dev_attr_i2c_reg); |
c12e3be0 | 1009 | err_val: |
54bd5b66 | 1010 | device_remove_file(classdev, &dev_attr_val); |
c12e3be0 | 1011 | err_reg: |
54bd5b66 | 1012 | device_remove_file(classdev, &dev_attr_reg); |
26563127 LR |
1013 | err_out: |
1014 | return err; | |
7ce08c93 LR |
1015 | } |
1016 | #endif /* CONFIG_VIDEO_ADV_DEBUG */ | |
1017 | ||
1018 | /*****************************************************************************/ | |
1019 | ||
1020 | static int | |
1021 | et61x251_set_pix_format(struct et61x251_device* cam, | |
d56410e0 | 1022 | struct v4l2_pix_format* pix) |
7ce08c93 LR |
1023 | { |
1024 | int r, err = 0; | |
1025 | ||
1026 | if ((r = et61x251_read_reg(cam, 0x12)) < 0) | |
1027 | err += r; | |
1028 | if (pix->pixelformat == V4L2_PIX_FMT_ET61X251) | |
1029 | err += et61x251_write_reg(cam, r & 0xfd, 0x12); | |
1030 | else | |
1031 | err += et61x251_write_reg(cam, r | 0x02, 0x12); | |
1032 | ||
1033 | return err ? -EIO : 0; | |
1034 | } | |
1035 | ||
1036 | ||
1037 | static int | |
1038 | et61x251_set_compression(struct et61x251_device* cam, | |
d56410e0 | 1039 | struct v4l2_jpegcompression* compression) |
7ce08c93 LR |
1040 | { |
1041 | int r, err = 0; | |
1042 | ||
1043 | if ((r = et61x251_read_reg(cam, 0x12)) < 0) | |
1044 | err += r; | |
1045 | if (compression->quality == 0) | |
1046 | err += et61x251_write_reg(cam, r & 0xfb, 0x12); | |
1047 | else | |
1048 | err += et61x251_write_reg(cam, r | 0x04, 0x12); | |
1049 | ||
1050 | return err ? -EIO : 0; | |
1051 | } | |
1052 | ||
1053 | ||
1054 | static int et61x251_set_scale(struct et61x251_device* cam, u8 scale) | |
1055 | { | |
1056 | int r = 0, err = 0; | |
1057 | ||
1058 | r = et61x251_read_reg(cam, 0x12); | |
1059 | if (r < 0) | |
1060 | err += r; | |
1061 | ||
1062 | if (scale == 1) | |
1063 | err += et61x251_write_reg(cam, r & ~0x01, 0x12); | |
1064 | else if (scale == 2) | |
1065 | err += et61x251_write_reg(cam, r | 0x01, 0x12); | |
1066 | ||
1067 | if (err) | |
1068 | return -EIO; | |
1069 | ||
1070 | PDBGG("Scaling factor: %u", scale); | |
1071 | ||
1072 | return 0; | |
1073 | } | |
1074 | ||
1075 | ||
1076 | static int | |
1077 | et61x251_set_crop(struct et61x251_device* cam, struct v4l2_rect* rect) | |
1078 | { | |
ccad7789 | 1079 | struct et61x251_sensor* s = &cam->sensor; |
7ce08c93 | 1080 | u16 fmw_sx = (u16)(rect->left - s->cropcap.bounds.left + |
d56410e0 | 1081 | s->active_pixel.left), |
7ce08c93 | 1082 | fmw_sy = (u16)(rect->top - s->cropcap.bounds.top + |
d56410e0 | 1083 | s->active_pixel.top), |
7ce08c93 LR |
1084 | fmw_length = (u16)(rect->width), |
1085 | fmw_height = (u16)(rect->height); | |
1086 | int err = 0; | |
1087 | ||
1088 | err += et61x251_write_reg(cam, fmw_sx & 0xff, 0x69); | |
1089 | err += et61x251_write_reg(cam, fmw_sy & 0xff, 0x6a); | |
1090 | err += et61x251_write_reg(cam, fmw_length & 0xff, 0x6b); | |
1091 | err += et61x251_write_reg(cam, fmw_height & 0xff, 0x6c); | |
1092 | err += et61x251_write_reg(cam, (fmw_sx >> 8) | ((fmw_sy & 0x300) >> 6) | |
d56410e0 MCC |
1093 | | ((fmw_length & 0x300) >> 4) |
1094 | | ((fmw_height & 0x300) >> 2), 0x6d); | |
7ce08c93 LR |
1095 | if (err) |
1096 | return -EIO; | |
1097 | ||
1098 | PDBGG("fmw_sx, fmw_sy, fmw_length, fmw_height: %u %u %u %u", | |
1099 | fmw_sx, fmw_sy, fmw_length, fmw_height); | |
1100 | ||
1101 | return 0; | |
1102 | } | |
1103 | ||
1104 | ||
1105 | static int et61x251_init(struct et61x251_device* cam) | |
1106 | { | |
ccad7789 | 1107 | struct et61x251_sensor* s = &cam->sensor; |
7ce08c93 LR |
1108 | struct v4l2_control ctrl; |
1109 | struct v4l2_queryctrl *qctrl; | |
1110 | struct v4l2_rect* rect; | |
1111 | u8 i = 0; | |
1112 | int err = 0; | |
1113 | ||
1114 | if (!(cam->state & DEV_INITIALIZED)) { | |
3b2ae0be LR |
1115 | mutex_init(&cam->open_mutex); |
1116 | init_waitqueue_head(&cam->wait_open); | |
7ce08c93 LR |
1117 | qctrl = s->qctrl; |
1118 | rect = &(s->cropcap.defrect); | |
1119 | cam->compression.quality = ET61X251_COMPRESSION_QUALITY; | |
1120 | } else { /* use current values */ | |
1121 | qctrl = s->_qctrl; | |
1122 | rect = &(s->_rect); | |
1123 | } | |
1124 | ||
1125 | err += et61x251_set_scale(cam, rect->width / s->pix_format.width); | |
1126 | err += et61x251_set_crop(cam, rect); | |
1127 | if (err) | |
1128 | return err; | |
1129 | ||
1130 | if (s->init) { | |
1131 | err = s->init(cam); | |
1132 | if (err) { | |
1133 | DBG(3, "Sensor initialization failed"); | |
1134 | return err; | |
1135 | } | |
1136 | } | |
1137 | ||
1138 | err += et61x251_set_compression(cam, &cam->compression); | |
1139 | err += et61x251_set_pix_format(cam, &s->pix_format); | |
1140 | if (s->set_pix_format) | |
1141 | err += s->set_pix_format(cam, &s->pix_format); | |
1142 | if (err) | |
1143 | return err; | |
1144 | ||
1145 | if (s->pix_format.pixelformat == V4L2_PIX_FMT_ET61X251) | |
1146 | DBG(3, "Compressed video format is active, quality %d", | |
1147 | cam->compression.quality); | |
1148 | else | |
1149 | DBG(3, "Uncompressed video format is active"); | |
1150 | ||
1151 | if (s->set_crop) | |
1152 | if ((err = s->set_crop(cam, rect))) { | |
1153 | DBG(3, "set_crop() failed"); | |
1154 | return err; | |
1155 | } | |
1156 | ||
1157 | if (s->set_ctrl) { | |
1158 | for (i = 0; i < ARRAY_SIZE(s->qctrl); i++) | |
1159 | if (s->qctrl[i].id != 0 && | |
1160 | !(s->qctrl[i].flags & V4L2_CTRL_FLAG_DISABLED)) { | |
1161 | ctrl.id = s->qctrl[i].id; | |
1162 | ctrl.value = qctrl[i].default_value; | |
1163 | err = s->set_ctrl(cam, &ctrl); | |
1164 | if (err) { | |
1165 | DBG(3, "Set %s control failed", | |
1166 | s->qctrl[i].name); | |
1167 | return err; | |
1168 | } | |
1169 | DBG(3, "Image sensor supports '%s' control", | |
1170 | s->qctrl[i].name); | |
1171 | } | |
1172 | } | |
1173 | ||
1174 | if (!(cam->state & DEV_INITIALIZED)) { | |
ccad7789 | 1175 | mutex_init(&cam->fileop_mutex); |
7ce08c93 LR |
1176 | spin_lock_init(&cam->queue_lock); |
1177 | init_waitqueue_head(&cam->wait_frame); | |
1178 | init_waitqueue_head(&cam->wait_stream); | |
1179 | cam->nreadbuffers = 2; | |
1180 | memcpy(s->_qctrl, s->qctrl, sizeof(s->qctrl)); | |
1181 | memcpy(&(s->_rect), &(s->cropcap.defrect), | |
1182 | sizeof(struct v4l2_rect)); | |
1183 | cam->state |= DEV_INITIALIZED; | |
1184 | } | |
1185 | ||
1186 | DBG(2, "Initialization succeeded"); | |
1187 | return 0; | |
1188 | } | |
1189 | ||
3b2ae0be | 1190 | /*****************************************************************************/ |
7ce08c93 | 1191 | |
3b2ae0be | 1192 | static void et61x251_release_resources(struct kref *kref) |
7ce08c93 | 1193 | { |
3b2ae0be LR |
1194 | struct et61x251_device *cam; |
1195 | ||
ccad7789 | 1196 | mutex_lock(&et61x251_sysfs_lock); |
7ce08c93 | 1197 | |
3b2ae0be LR |
1198 | cam = container_of(kref, struct et61x251_device, kref); |
1199 | ||
38c7c036 LP |
1200 | DBG(2, "V4L2 device %s deregistered", |
1201 | video_device_node_name(cam->v4ldev)); | |
7ce08c93 LR |
1202 | video_set_drvdata(cam->v4ldev, NULL); |
1203 | video_unregister_device(cam->v4ldev); | |
3b2ae0be LR |
1204 | usb_put_dev(cam->usbdev); |
1205 | kfree(cam->control_buffer); | |
1206 | kfree(cam); | |
7ce08c93 | 1207 | |
ccad7789 | 1208 | mutex_unlock(&et61x251_sysfs_lock); |
7ce08c93 LR |
1209 | } |
1210 | ||
7ce08c93 | 1211 | |
bec43661 | 1212 | static int et61x251_open(struct file *filp) |
7ce08c93 LR |
1213 | { |
1214 | struct et61x251_device* cam; | |
1215 | int err = 0; | |
1216 | ||
3b2ae0be | 1217 | if (!down_read_trylock(&et61x251_dev_lock)) |
7ce08c93 LR |
1218 | return -ERESTARTSYS; |
1219 | ||
c170ecf4 | 1220 | cam = video_drvdata(filp); |
7ce08c93 | 1221 | |
3b2ae0be LR |
1222 | if (wait_for_completion_interruptible(&cam->probe)) { |
1223 | up_read(&et61x251_dev_lock); | |
7ce08c93 LR |
1224 | return -ERESTARTSYS; |
1225 | } | |
1226 | ||
3b2ae0be LR |
1227 | kref_get(&cam->kref); |
1228 | ||
1229 | if (mutex_lock_interruptible(&cam->open_mutex)) { | |
1230 | kref_put(&cam->kref, et61x251_release_resources); | |
1231 | up_read(&et61x251_dev_lock); | |
1232 | return -ERESTARTSYS; | |
1233 | } | |
1234 | ||
1235 | if (cam->state & DEV_DISCONNECTED) { | |
1236 | DBG(1, "Device not present"); | |
1237 | err = -ENODEV; | |
1238 | goto out; | |
1239 | } | |
1240 | ||
7ce08c93 | 1241 | if (cam->users) { |
38c7c036 LP |
1242 | DBG(2, "Device %s is already in use", |
1243 | video_device_node_name(cam->v4ldev)); | |
3b2ae0be | 1244 | DBG(3, "Simultaneous opens are not supported"); |
7ce08c93 LR |
1245 | if ((filp->f_flags & O_NONBLOCK) || |
1246 | (filp->f_flags & O_NDELAY)) { | |
1247 | err = -EWOULDBLOCK; | |
1248 | goto out; | |
1249 | } | |
3b2ae0be LR |
1250 | DBG(2, "A blocking open() has been requested. Wait for the " |
1251 | "device to be released..."); | |
1252 | up_read(&et61x251_dev_lock); | |
1253 | err = wait_event_interruptible_exclusive(cam->wait_open, | |
1254 | (cam->state & DEV_DISCONNECTED) | |
d56410e0 | 1255 | || !cam->users); |
3b2ae0be LR |
1256 | down_read(&et61x251_dev_lock); |
1257 | if (err) | |
1258 | goto out; | |
7ce08c93 | 1259 | if (cam->state & DEV_DISCONNECTED) { |
3b2ae0be LR |
1260 | err = -ENODEV; |
1261 | goto out; | |
7ce08c93 | 1262 | } |
7ce08c93 LR |
1263 | } |
1264 | ||
7ce08c93 LR |
1265 | if (cam->state & DEV_MISCONFIGURED) { |
1266 | err = et61x251_init(cam); | |
1267 | if (err) { | |
1268 | DBG(1, "Initialization failed again. " | |
1269 | "I will retry on next open()."); | |
1270 | goto out; | |
1271 | } | |
1272 | cam->state &= ~DEV_MISCONFIGURED; | |
1273 | } | |
1274 | ||
1275 | if ((err = et61x251_start_transfer(cam))) | |
1276 | goto out; | |
1277 | ||
1278 | filp->private_data = cam; | |
1279 | cam->users++; | |
1280 | cam->io = IO_NONE; | |
1281 | cam->stream = STREAM_OFF; | |
1282 | cam->nbuffers = 0; | |
1283 | cam->frame_count = 0; | |
1284 | et61x251_empty_framequeues(cam); | |
1285 | ||
38c7c036 LP |
1286 | DBG(3, "Video device %s is open", |
1287 | video_device_node_name(cam->v4ldev)); | |
7ce08c93 LR |
1288 | |
1289 | out: | |
3b2ae0be LR |
1290 | mutex_unlock(&cam->open_mutex); |
1291 | if (err) | |
1292 | kref_put(&cam->kref, et61x251_release_resources); | |
1293 | up_read(&et61x251_dev_lock); | |
7ce08c93 LR |
1294 | return err; |
1295 | } | |
1296 | ||
1297 | ||
bec43661 | 1298 | static int et61x251_release(struct file *filp) |
7ce08c93 | 1299 | { |
3b2ae0be | 1300 | struct et61x251_device* cam; |
7ce08c93 | 1301 | |
3b2ae0be | 1302 | down_write(&et61x251_dev_lock); |
7ce08c93 | 1303 | |
c170ecf4 | 1304 | cam = video_drvdata(filp); |
7ce08c93 | 1305 | |
3b2ae0be | 1306 | et61x251_stop_transfer(cam); |
7ce08c93 | 1307 | et61x251_release_buffers(cam); |
7ce08c93 | 1308 | cam->users--; |
3b2ae0be | 1309 | wake_up_interruptible_nr(&cam->wait_open, 1); |
7ce08c93 | 1310 | |
38c7c036 LP |
1311 | DBG(3, "Video device %s closed", |
1312 | video_device_node_name(cam->v4ldev)); | |
7ce08c93 | 1313 | |
3b2ae0be LR |
1314 | kref_put(&cam->kref, et61x251_release_resources); |
1315 | ||
1316 | up_write(&et61x251_dev_lock); | |
7ce08c93 LR |
1317 | |
1318 | return 0; | |
1319 | } | |
1320 | ||
1321 | ||
1322 | static ssize_t | |
1323 | et61x251_read(struct file* filp, char __user * buf, | |
d56410e0 | 1324 | size_t count, loff_t* f_pos) |
7ce08c93 | 1325 | { |
c170ecf4 | 1326 | struct et61x251_device *cam = video_drvdata(filp); |
7ce08c93 LR |
1327 | struct et61x251_frame_t* f, * i; |
1328 | unsigned long lock_flags; | |
ccad7789 | 1329 | long timeout; |
7ce08c93 LR |
1330 | int err = 0; |
1331 | ||
ccad7789 | 1332 | if (mutex_lock_interruptible(&cam->fileop_mutex)) |
7ce08c93 LR |
1333 | return -ERESTARTSYS; |
1334 | ||
1335 | if (cam->state & DEV_DISCONNECTED) { | |
1336 | DBG(1, "Device not present"); | |
ccad7789 | 1337 | mutex_unlock(&cam->fileop_mutex); |
7ce08c93 LR |
1338 | return -ENODEV; |
1339 | } | |
1340 | ||
1341 | if (cam->state & DEV_MISCONFIGURED) { | |
1342 | DBG(1, "The camera is misconfigured. Close and open it " | |
1343 | "again."); | |
ccad7789 | 1344 | mutex_unlock(&cam->fileop_mutex); |
7ce08c93 LR |
1345 | return -EIO; |
1346 | } | |
1347 | ||
1348 | if (cam->io == IO_MMAP) { | |
1349 | DBG(3, "Close and open the device again to choose the read " | |
1350 | "method"); | |
ccad7789 | 1351 | mutex_unlock(&cam->fileop_mutex); |
3b2ae0be | 1352 | return -EBUSY; |
7ce08c93 LR |
1353 | } |
1354 | ||
1355 | if (cam->io == IO_NONE) { | |
1356 | if (!et61x251_request_buffers(cam, cam->nreadbuffers, | |
d56410e0 | 1357 | IO_READ)) { |
7ce08c93 | 1358 | DBG(1, "read() failed, not enough memory"); |
ccad7789 | 1359 | mutex_unlock(&cam->fileop_mutex); |
7ce08c93 LR |
1360 | return -ENOMEM; |
1361 | } | |
1362 | cam->io = IO_READ; | |
1363 | cam->stream = STREAM_ON; | |
1364 | } | |
1365 | ||
1366 | if (list_empty(&cam->inqueue)) { | |
1367 | if (!list_empty(&cam->outqueue)) | |
1368 | et61x251_empty_framequeues(cam); | |
1369 | et61x251_queue_unusedframes(cam); | |
1370 | } | |
1371 | ||
1372 | if (!count) { | |
ccad7789 | 1373 | mutex_unlock(&cam->fileop_mutex); |
7ce08c93 LR |
1374 | return 0; |
1375 | } | |
1376 | ||
1377 | if (list_empty(&cam->outqueue)) { | |
1378 | if (filp->f_flags & O_NONBLOCK) { | |
ccad7789 | 1379 | mutex_unlock(&cam->fileop_mutex); |
7ce08c93 LR |
1380 | return -EAGAIN; |
1381 | } | |
ccad7789 | 1382 | timeout = wait_event_interruptible_timeout |
d56410e0 MCC |
1383 | ( cam->wait_frame, |
1384 | (!list_empty(&cam->outqueue)) || | |
1385 | (cam->state & DEV_DISCONNECTED) || | |
1386 | (cam->state & DEV_MISCONFIGURED), | |
607cfab6 AM |
1387 | msecs_to_jiffies( |
1388 | cam->module_param.frame_timeout * 1000 | |
1389 | ) | |
1390 | ); | |
ccad7789 LR |
1391 | if (timeout < 0) { |
1392 | mutex_unlock(&cam->fileop_mutex); | |
1393 | return timeout; | |
7ce08c93 LR |
1394 | } |
1395 | if (cam->state & DEV_DISCONNECTED) { | |
ccad7789 | 1396 | mutex_unlock(&cam->fileop_mutex); |
7ce08c93 LR |
1397 | return -ENODEV; |
1398 | } | |
ccad7789 LR |
1399 | if (!timeout || (cam->state & DEV_MISCONFIGURED)) { |
1400 | mutex_unlock(&cam->fileop_mutex); | |
7ce08c93 LR |
1401 | return -EIO; |
1402 | } | |
1403 | } | |
1404 | ||
1405 | f = list_entry(cam->outqueue.prev, struct et61x251_frame_t, frame); | |
1406 | ||
1407 | if (count > f->buf.bytesused) | |
1408 | count = f->buf.bytesused; | |
1409 | ||
1410 | if (copy_to_user(buf, f->bufmem, count)) { | |
1411 | err = -EFAULT; | |
1412 | goto exit; | |
1413 | } | |
1414 | *f_pos += count; | |
1415 | ||
1416 | exit: | |
1417 | spin_lock_irqsave(&cam->queue_lock, lock_flags); | |
1418 | list_for_each_entry(i, &cam->outqueue, frame) | |
1419 | i->state = F_UNUSED; | |
1420 | INIT_LIST_HEAD(&cam->outqueue); | |
1421 | spin_unlock_irqrestore(&cam->queue_lock, lock_flags); | |
1422 | ||
1423 | et61x251_queue_unusedframes(cam); | |
1424 | ||
1425 | PDBGG("Frame #%lu, bytes read: %zu", | |
1426 | (unsigned long)f->buf.index, count); | |
1427 | ||
ccad7789 | 1428 | mutex_unlock(&cam->fileop_mutex); |
7ce08c93 LR |
1429 | |
1430 | return err ? err : count; | |
1431 | } | |
1432 | ||
1433 | ||
1434 | static unsigned int et61x251_poll(struct file *filp, poll_table *wait) | |
1435 | { | |
c170ecf4 | 1436 | struct et61x251_device *cam = video_drvdata(filp); |
7ce08c93 LR |
1437 | struct et61x251_frame_t* f; |
1438 | unsigned long lock_flags; | |
1439 | unsigned int mask = 0; | |
1440 | ||
ccad7789 | 1441 | if (mutex_lock_interruptible(&cam->fileop_mutex)) |
7ce08c93 LR |
1442 | return POLLERR; |
1443 | ||
1444 | if (cam->state & DEV_DISCONNECTED) { | |
1445 | DBG(1, "Device not present"); | |
1446 | goto error; | |
1447 | } | |
1448 | ||
1449 | if (cam->state & DEV_MISCONFIGURED) { | |
1450 | DBG(1, "The camera is misconfigured. Close and open it " | |
1451 | "again."); | |
1452 | goto error; | |
1453 | } | |
1454 | ||
1455 | if (cam->io == IO_NONE) { | |
1456 | if (!et61x251_request_buffers(cam, cam->nreadbuffers, | |
d56410e0 | 1457 | IO_READ)) { |
7ce08c93 LR |
1458 | DBG(1, "poll() failed, not enough memory"); |
1459 | goto error; | |
1460 | } | |
1461 | cam->io = IO_READ; | |
1462 | cam->stream = STREAM_ON; | |
1463 | } | |
1464 | ||
1465 | if (cam->io == IO_READ) { | |
1466 | spin_lock_irqsave(&cam->queue_lock, lock_flags); | |
1467 | list_for_each_entry(f, &cam->outqueue, frame) | |
1468 | f->state = F_UNUSED; | |
1469 | INIT_LIST_HEAD(&cam->outqueue); | |
1470 | spin_unlock_irqrestore(&cam->queue_lock, lock_flags); | |
1471 | et61x251_queue_unusedframes(cam); | |
1472 | } | |
1473 | ||
1474 | poll_wait(filp, &cam->wait_frame, wait); | |
1475 | ||
1476 | if (!list_empty(&cam->outqueue)) | |
1477 | mask |= POLLIN | POLLRDNORM; | |
1478 | ||
ccad7789 | 1479 | mutex_unlock(&cam->fileop_mutex); |
7ce08c93 LR |
1480 | |
1481 | return mask; | |
1482 | ||
1483 | error: | |
ccad7789 | 1484 | mutex_unlock(&cam->fileop_mutex); |
7ce08c93 LR |
1485 | return POLLERR; |
1486 | } | |
1487 | ||
1488 | ||
1489 | static void et61x251_vm_open(struct vm_area_struct* vma) | |
1490 | { | |
1491 | struct et61x251_frame_t* f = vma->vm_private_data; | |
1492 | f->vma_use_count++; | |
1493 | } | |
1494 | ||
1495 | ||
1496 | static void et61x251_vm_close(struct vm_area_struct* vma) | |
1497 | { | |
1498 | /* NOTE: buffers are not freed here */ | |
1499 | struct et61x251_frame_t* f = vma->vm_private_data; | |
1500 | f->vma_use_count--; | |
1501 | } | |
1502 | ||
1503 | ||
f0f37e2f | 1504 | static const struct vm_operations_struct et61x251_vm_ops = { |
7ce08c93 LR |
1505 | .open = et61x251_vm_open, |
1506 | .close = et61x251_vm_close, | |
1507 | }; | |
1508 | ||
1509 | ||
1510 | static int et61x251_mmap(struct file* filp, struct vm_area_struct *vma) | |
1511 | { | |
c170ecf4 | 1512 | struct et61x251_device *cam = video_drvdata(filp); |
7ce08c93 | 1513 | unsigned long size = vma->vm_end - vma->vm_start, |
d56410e0 | 1514 | start = vma->vm_start; |
7ce08c93 LR |
1515 | void *pos; |
1516 | u32 i; | |
1517 | ||
ccad7789 | 1518 | if (mutex_lock_interruptible(&cam->fileop_mutex)) |
7ce08c93 LR |
1519 | return -ERESTARTSYS; |
1520 | ||
1521 | if (cam->state & DEV_DISCONNECTED) { | |
1522 | DBG(1, "Device not present"); | |
ccad7789 | 1523 | mutex_unlock(&cam->fileop_mutex); |
7ce08c93 LR |
1524 | return -ENODEV; |
1525 | } | |
1526 | ||
1527 | if (cam->state & DEV_MISCONFIGURED) { | |
1528 | DBG(1, "The camera is misconfigured. Close and open it " | |
1529 | "again."); | |
ccad7789 | 1530 | mutex_unlock(&cam->fileop_mutex); |
7ce08c93 LR |
1531 | return -EIO; |
1532 | } | |
1533 | ||
3b2ae0be LR |
1534 | if (!(vma->vm_flags & (VM_WRITE | VM_READ))) { |
1535 | mutex_unlock(&cam->fileop_mutex); | |
1536 | return -EACCES; | |
1537 | } | |
1538 | ||
1539 | if (cam->io != IO_MMAP || | |
7ce08c93 | 1540 | size != PAGE_ALIGN(cam->frame[0].buf.length)) { |
ccad7789 | 1541 | mutex_unlock(&cam->fileop_mutex); |
7ce08c93 LR |
1542 | return -EINVAL; |
1543 | } | |
1544 | ||
1545 | for (i = 0; i < cam->nbuffers; i++) { | |
1546 | if ((cam->frame[i].buf.m.offset>>PAGE_SHIFT) == vma->vm_pgoff) | |
1547 | break; | |
1548 | } | |
1549 | if (i == cam->nbuffers) { | |
ccad7789 | 1550 | mutex_unlock(&cam->fileop_mutex); |
7ce08c93 LR |
1551 | return -EINVAL; |
1552 | } | |
1553 | ||
1554 | vma->vm_flags |= VM_IO; | |
1555 | vma->vm_flags |= VM_RESERVED; | |
1556 | ||
1557 | pos = cam->frame[i].bufmem; | |
1558 | while (size > 0) { /* size is page-aligned */ | |
1559 | if (vm_insert_page(vma, start, vmalloc_to_page(pos))) { | |
ccad7789 | 1560 | mutex_unlock(&cam->fileop_mutex); |
7ce08c93 LR |
1561 | return -EAGAIN; |
1562 | } | |
1563 | start += PAGE_SIZE; | |
1564 | pos += PAGE_SIZE; | |
1565 | size -= PAGE_SIZE; | |
1566 | } | |
1567 | ||
1568 | vma->vm_ops = &et61x251_vm_ops; | |
1569 | vma->vm_private_data = &cam->frame[i]; | |
7ce08c93 LR |
1570 | et61x251_vm_open(vma); |
1571 | ||
ccad7789 | 1572 | mutex_unlock(&cam->fileop_mutex); |
7ce08c93 LR |
1573 | |
1574 | return 0; | |
1575 | } | |
1576 | ||
1577 | /*****************************************************************************/ | |
1578 | ||
1579 | static int | |
1580 | et61x251_vidioc_querycap(struct et61x251_device* cam, void __user * arg) | |
1581 | { | |
1582 | struct v4l2_capability cap = { | |
1583 | .driver = "et61x251", | |
5204ceba | 1584 | .version = LINUX_VERSION_CODE, |
7ce08c93 | 1585 | .capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_READWRITE | |
d56410e0 | 1586 | V4L2_CAP_STREAMING, |
7ce08c93 LR |
1587 | }; |
1588 | ||
1589 | strlcpy(cap.card, cam->v4ldev->name, sizeof(cap.card)); | |
1590 | if (usb_make_path(cam->usbdev, cap.bus_info, sizeof(cap.bus_info)) < 0) | |
af128a10 | 1591 | strlcpy(cap.bus_info, dev_name(&cam->usbdev->dev), |
d56410e0 | 1592 | sizeof(cap.bus_info)); |
7ce08c93 LR |
1593 | |
1594 | if (copy_to_user(arg, &cap, sizeof(cap))) | |
1595 | return -EFAULT; | |
1596 | ||
1597 | return 0; | |
1598 | } | |
1599 | ||
1600 | ||
1601 | static int | |
1602 | et61x251_vidioc_enuminput(struct et61x251_device* cam, void __user * arg) | |
1603 | { | |
1604 | struct v4l2_input i; | |
1605 | ||
1606 | if (copy_from_user(&i, arg, sizeof(i))) | |
1607 | return -EFAULT; | |
1608 | ||
1609 | if (i.index) | |
1610 | return -EINVAL; | |
1611 | ||
1612 | memset(&i, 0, sizeof(i)); | |
1613 | strcpy(i.name, "Camera"); | |
ccad7789 | 1614 | i.type = V4L2_INPUT_TYPE_CAMERA; |
657f2271 | 1615 | i.capabilities = V4L2_IN_CAP_STD; |
7ce08c93 LR |
1616 | |
1617 | if (copy_to_user(arg, &i, sizeof(i))) | |
1618 | return -EFAULT; | |
1619 | ||
1620 | return 0; | |
1621 | } | |
1622 | ||
1623 | ||
1624 | static int | |
ccad7789 LR |
1625 | et61x251_vidioc_g_input(struct et61x251_device* cam, void __user * arg) |
1626 | { | |
1627 | int index = 0; | |
1628 | ||
1629 | if (copy_to_user(arg, &index, sizeof(index))) | |
1630 | return -EFAULT; | |
1631 | ||
1632 | return 0; | |
1633 | } | |
1634 | ||
1635 | ||
1636 | static int | |
1637 | et61x251_vidioc_s_input(struct et61x251_device* cam, void __user * arg) | |
7ce08c93 LR |
1638 | { |
1639 | int index; | |
1640 | ||
1641 | if (copy_from_user(&index, arg, sizeof(index))) | |
1642 | return -EFAULT; | |
1643 | ||
1644 | if (index != 0) | |
1645 | return -EINVAL; | |
1646 | ||
1647 | return 0; | |
1648 | } | |
1649 | ||
1650 | ||
1651 | static int | |
1652 | et61x251_vidioc_query_ctrl(struct et61x251_device* cam, void __user * arg) | |
1653 | { | |
ccad7789 | 1654 | struct et61x251_sensor* s = &cam->sensor; |
7ce08c93 LR |
1655 | struct v4l2_queryctrl qc; |
1656 | u8 i; | |
1657 | ||
1658 | if (copy_from_user(&qc, arg, sizeof(qc))) | |
1659 | return -EFAULT; | |
1660 | ||
1661 | for (i = 0; i < ARRAY_SIZE(s->qctrl); i++) | |
1662 | if (qc.id && qc.id == s->qctrl[i].id) { | |
1663 | memcpy(&qc, &(s->qctrl[i]), sizeof(qc)); | |
1664 | if (copy_to_user(arg, &qc, sizeof(qc))) | |
1665 | return -EFAULT; | |
1666 | return 0; | |
1667 | } | |
1668 | ||
1669 | return -EINVAL; | |
1670 | } | |
1671 | ||
1672 | ||
1673 | static int | |
1674 | et61x251_vidioc_g_ctrl(struct et61x251_device* cam, void __user * arg) | |
1675 | { | |
ccad7789 | 1676 | struct et61x251_sensor* s = &cam->sensor; |
7ce08c93 LR |
1677 | struct v4l2_control ctrl; |
1678 | int err = 0; | |
1679 | u8 i; | |
1680 | ||
1681 | if (!s->get_ctrl && !s->set_ctrl) | |
1682 | return -EINVAL; | |
1683 | ||
1684 | if (copy_from_user(&ctrl, arg, sizeof(ctrl))) | |
1685 | return -EFAULT; | |
1686 | ||
1687 | if (!s->get_ctrl) { | |
1688 | for (i = 0; i < ARRAY_SIZE(s->qctrl); i++) | |
1689 | if (ctrl.id == s->qctrl[i].id) { | |
1690 | ctrl.value = s->_qctrl[i].default_value; | |
1691 | goto exit; | |
1692 | } | |
1693 | return -EINVAL; | |
1694 | } else | |
1695 | err = s->get_ctrl(cam, &ctrl); | |
1696 | ||
1697 | exit: | |
1698 | if (copy_to_user(arg, &ctrl, sizeof(ctrl))) | |
1699 | return -EFAULT; | |
1700 | ||
1701 | return err; | |
1702 | } | |
1703 | ||
1704 | ||
1705 | static int | |
1706 | et61x251_vidioc_s_ctrl(struct et61x251_device* cam, void __user * arg) | |
1707 | { | |
ccad7789 | 1708 | struct et61x251_sensor* s = &cam->sensor; |
7ce08c93 LR |
1709 | struct v4l2_control ctrl; |
1710 | u8 i; | |
1711 | int err = 0; | |
1712 | ||
1713 | if (!s->set_ctrl) | |
1714 | return -EINVAL; | |
1715 | ||
1716 | if (copy_from_user(&ctrl, arg, sizeof(ctrl))) | |
1717 | return -EFAULT; | |
1718 | ||
67e13e77 | 1719 | for (i = 0; i < ARRAY_SIZE(s->qctrl); i++) { |
7ce08c93 | 1720 | if (ctrl.id == s->qctrl[i].id) { |
ccad7789 LR |
1721 | if (s->qctrl[i].flags & V4L2_CTRL_FLAG_DISABLED) |
1722 | return -EINVAL; | |
7ce08c93 LR |
1723 | if (ctrl.value < s->qctrl[i].minimum || |
1724 | ctrl.value > s->qctrl[i].maximum) | |
1725 | return -ERANGE; | |
1726 | ctrl.value -= ctrl.value % s->qctrl[i].step; | |
1727 | break; | |
1728 | } | |
67e13e77 DC |
1729 | } |
1730 | if (i == ARRAY_SIZE(s->qctrl)) | |
1731 | return -EINVAL; | |
7ce08c93 LR |
1732 | if ((err = s->set_ctrl(cam, &ctrl))) |
1733 | return err; | |
1734 | ||
1735 | s->_qctrl[i].default_value = ctrl.value; | |
1736 | ||
1737 | return 0; | |
1738 | } | |
1739 | ||
1740 | ||
1741 | static int | |
1742 | et61x251_vidioc_cropcap(struct et61x251_device* cam, void __user * arg) | |
1743 | { | |
ccad7789 | 1744 | struct v4l2_cropcap* cc = &(cam->sensor.cropcap); |
7ce08c93 LR |
1745 | |
1746 | cc->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
1747 | cc->pixelaspect.numerator = 1; | |
1748 | cc->pixelaspect.denominator = 1; | |
1749 | ||
1750 | if (copy_to_user(arg, cc, sizeof(*cc))) | |
1751 | return -EFAULT; | |
1752 | ||
1753 | return 0; | |
1754 | } | |
1755 | ||
1756 | ||
1757 | static int | |
1758 | et61x251_vidioc_g_crop(struct et61x251_device* cam, void __user * arg) | |
1759 | { | |
ccad7789 | 1760 | struct et61x251_sensor* s = &cam->sensor; |
7ce08c93 LR |
1761 | struct v4l2_crop crop = { |
1762 | .type = V4L2_BUF_TYPE_VIDEO_CAPTURE, | |
1763 | }; | |
1764 | ||
1765 | memcpy(&(crop.c), &(s->_rect), sizeof(struct v4l2_rect)); | |
1766 | ||
1767 | if (copy_to_user(arg, &crop, sizeof(crop))) | |
1768 | return -EFAULT; | |
1769 | ||
1770 | return 0; | |
1771 | } | |
1772 | ||
1773 | ||
1774 | static int | |
1775 | et61x251_vidioc_s_crop(struct et61x251_device* cam, void __user * arg) | |
1776 | { | |
ccad7789 | 1777 | struct et61x251_sensor* s = &cam->sensor; |
7ce08c93 LR |
1778 | struct v4l2_crop crop; |
1779 | struct v4l2_rect* rect; | |
1780 | struct v4l2_rect* bounds = &(s->cropcap.bounds); | |
1781 | struct v4l2_pix_format* pix_format = &(s->pix_format); | |
1782 | u8 scale; | |
1783 | const enum et61x251_stream_state stream = cam->stream; | |
1784 | const u32 nbuffers = cam->nbuffers; | |
1785 | u32 i; | |
1786 | int err = 0; | |
1787 | ||
1788 | if (copy_from_user(&crop, arg, sizeof(crop))) | |
1789 | return -EFAULT; | |
1790 | ||
1791 | rect = &(crop.c); | |
1792 | ||
1793 | if (crop.type != V4L2_BUF_TYPE_VIDEO_CAPTURE) | |
1794 | return -EINVAL; | |
1795 | ||
1796 | if (cam->module_param.force_munmap) | |
1797 | for (i = 0; i < cam->nbuffers; i++) | |
1798 | if (cam->frame[i].vma_use_count) { | |
1799 | DBG(3, "VIDIOC_S_CROP failed. " | |
1800 | "Unmap the buffers first."); | |
3b2ae0be | 1801 | return -EBUSY; |
7ce08c93 LR |
1802 | } |
1803 | ||
1804 | /* Preserve R,G or B origin */ | |
1805 | rect->left = (s->_rect.left & 1L) ? rect->left | 1L : rect->left & ~1L; | |
1806 | rect->top = (s->_rect.top & 1L) ? rect->top | 1L : rect->top & ~1L; | |
1807 | ||
26563127 LR |
1808 | if (rect->width < 16) |
1809 | rect->width = 16; | |
1810 | if (rect->height < 16) | |
1811 | rect->height = 16; | |
7ce08c93 LR |
1812 | if (rect->width > bounds->width) |
1813 | rect->width = bounds->width; | |
1814 | if (rect->height > bounds->height) | |
1815 | rect->height = bounds->height; | |
1816 | if (rect->left < bounds->left) | |
1817 | rect->left = bounds->left; | |
1818 | if (rect->top < bounds->top) | |
1819 | rect->top = bounds->top; | |
1820 | if (rect->left + rect->width > bounds->left + bounds->width) | |
1821 | rect->left = bounds->left+bounds->width - rect->width; | |
1822 | if (rect->top + rect->height > bounds->top + bounds->height) | |
1823 | rect->top = bounds->top+bounds->height - rect->height; | |
1824 | ||
26563127 LR |
1825 | rect->width &= ~15L; |
1826 | rect->height &= ~15L; | |
7ce08c93 LR |
1827 | |
1828 | if (ET61X251_PRESERVE_IMGSCALE) { | |
1829 | /* Calculate the actual scaling factor */ | |
1830 | u32 a, b; | |
1831 | a = rect->width * rect->height; | |
1832 | b = pix_format->width * pix_format->height; | |
1833 | scale = b ? (u8)((a / b) < 4 ? 1 : 2) : 1; | |
1834 | } else | |
1835 | scale = 1; | |
1836 | ||
1837 | if (cam->stream == STREAM_ON) | |
1838 | if ((err = et61x251_stream_interrupt(cam))) | |
1839 | return err; | |
1840 | ||
1841 | if (copy_to_user(arg, &crop, sizeof(crop))) { | |
1842 | cam->stream = stream; | |
1843 | return -EFAULT; | |
1844 | } | |
1845 | ||
1846 | if (cam->module_param.force_munmap || cam->io == IO_READ) | |
1847 | et61x251_release_buffers(cam); | |
1848 | ||
1849 | err = et61x251_set_crop(cam, rect); | |
1850 | if (s->set_crop) | |
1851 | err += s->set_crop(cam, rect); | |
1852 | err += et61x251_set_scale(cam, scale); | |
1853 | ||
1854 | if (err) { /* atomic, no rollback in ioctl() */ | |
1855 | cam->state |= DEV_MISCONFIGURED; | |
1856 | DBG(1, "VIDIOC_S_CROP failed because of hardware problems. To " | |
38c7c036 LP |
1857 | "use the camera, close and open %s again.", |
1858 | video_device_node_name(cam->v4ldev)); | |
7ce08c93 LR |
1859 | return -EIO; |
1860 | } | |
1861 | ||
1862 | s->pix_format.width = rect->width/scale; | |
1863 | s->pix_format.height = rect->height/scale; | |
1864 | memcpy(&(s->_rect), rect, sizeof(*rect)); | |
1865 | ||
1866 | if ((cam->module_param.force_munmap || cam->io == IO_READ) && | |
1867 | nbuffers != et61x251_request_buffers(cam, nbuffers, cam->io)) { | |
1868 | cam->state |= DEV_MISCONFIGURED; | |
1869 | DBG(1, "VIDIOC_S_CROP failed because of not enough memory. To " | |
38c7c036 LP |
1870 | "use the camera, close and open %s again.", |
1871 | video_device_node_name(cam->v4ldev)); | |
7ce08c93 LR |
1872 | return -ENOMEM; |
1873 | } | |
1874 | ||
1875 | if (cam->io == IO_READ) | |
1876 | et61x251_empty_framequeues(cam); | |
1877 | else if (cam->module_param.force_munmap) | |
1878 | et61x251_requeue_outqueue(cam); | |
1879 | ||
1880 | cam->stream = stream; | |
1881 | ||
1882 | return 0; | |
1883 | } | |
1884 | ||
1885 | ||
26563127 LR |
1886 | static int |
1887 | et61x251_vidioc_enum_framesizes(struct et61x251_device* cam, void __user * arg) | |
1888 | { | |
1889 | struct v4l2_frmsizeenum frmsize; | |
1890 | ||
1891 | if (copy_from_user(&frmsize, arg, sizeof(frmsize))) | |
1892 | return -EFAULT; | |
1893 | ||
1894 | if (frmsize.index != 0) | |
1895 | return -EINVAL; | |
1896 | ||
1897 | if (frmsize.pixel_format != V4L2_PIX_FMT_ET61X251 && | |
1898 | frmsize.pixel_format != V4L2_PIX_FMT_SBGGR8) | |
1899 | return -EINVAL; | |
1900 | ||
1901 | frmsize.type = V4L2_FRMSIZE_TYPE_STEPWISE; | |
1902 | frmsize.stepwise.min_width = frmsize.stepwise.step_width = 16; | |
1903 | frmsize.stepwise.min_height = frmsize.stepwise.step_height = 16; | |
1904 | frmsize.stepwise.max_width = cam->sensor.cropcap.bounds.width; | |
1905 | frmsize.stepwise.max_height = cam->sensor.cropcap.bounds.height; | |
1906 | memset(&frmsize.reserved, 0, sizeof(frmsize.reserved)); | |
1907 | ||
1908 | if (copy_to_user(arg, &frmsize, sizeof(frmsize))) | |
1909 | return -EFAULT; | |
1910 | ||
1911 | return 0; | |
1912 | } | |
1913 | ||
1914 | ||
7ce08c93 LR |
1915 | static int |
1916 | et61x251_vidioc_enum_fmt(struct et61x251_device* cam, void __user * arg) | |
1917 | { | |
1918 | struct v4l2_fmtdesc fmtd; | |
1919 | ||
1920 | if (copy_from_user(&fmtd, arg, sizeof(fmtd))) | |
1921 | return -EFAULT; | |
1922 | ||
26563127 LR |
1923 | if (fmtd.type != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
1924 | return -EINVAL; | |
1925 | ||
7ce08c93 LR |
1926 | if (fmtd.index == 0) { |
1927 | strcpy(fmtd.description, "bayer rgb"); | |
1928 | fmtd.pixelformat = V4L2_PIX_FMT_SBGGR8; | |
1929 | } else if (fmtd.index == 1) { | |
1930 | strcpy(fmtd.description, "compressed"); | |
1931 | fmtd.pixelformat = V4L2_PIX_FMT_ET61X251; | |
1932 | fmtd.flags = V4L2_FMT_FLAG_COMPRESSED; | |
1933 | } else | |
1934 | return -EINVAL; | |
1935 | ||
1936 | fmtd.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
1937 | memset(&fmtd.reserved, 0, sizeof(fmtd.reserved)); | |
1938 | ||
1939 | if (copy_to_user(arg, &fmtd, sizeof(fmtd))) | |
1940 | return -EFAULT; | |
1941 | ||
1942 | return 0; | |
1943 | } | |
1944 | ||
1945 | ||
1946 | static int | |
1947 | et61x251_vidioc_g_fmt(struct et61x251_device* cam, void __user * arg) | |
1948 | { | |
1949 | struct v4l2_format format; | |
ccad7789 | 1950 | struct v4l2_pix_format* pfmt = &(cam->sensor.pix_format); |
7ce08c93 LR |
1951 | |
1952 | if (copy_from_user(&format, arg, sizeof(format))) | |
1953 | return -EFAULT; | |
1954 | ||
1955 | if (format.type != V4L2_BUF_TYPE_VIDEO_CAPTURE) | |
1956 | return -EINVAL; | |
1957 | ||
3b2ae0be LR |
1958 | pfmt->colorspace = (pfmt->pixelformat == V4L2_PIX_FMT_ET61X251) ? |
1959 | 0 : V4L2_COLORSPACE_SRGB; | |
7ce08c93 | 1960 | pfmt->bytesperline = (pfmt->pixelformat==V4L2_PIX_FMT_ET61X251) |
d56410e0 | 1961 | ? 0 : (pfmt->width * pfmt->priv) / 8; |
7ce08c93 LR |
1962 | pfmt->sizeimage = pfmt->height * ((pfmt->width*pfmt->priv)/8); |
1963 | pfmt->field = V4L2_FIELD_NONE; | |
1964 | memcpy(&(format.fmt.pix), pfmt, sizeof(*pfmt)); | |
1965 | ||
1966 | if (copy_to_user(arg, &format, sizeof(format))) | |
1967 | return -EFAULT; | |
1968 | ||
1969 | return 0; | |
1970 | } | |
1971 | ||
1972 | ||
1973 | static int | |
1974 | et61x251_vidioc_try_s_fmt(struct et61x251_device* cam, unsigned int cmd, | |
d56410e0 | 1975 | void __user * arg) |
7ce08c93 | 1976 | { |
ccad7789 | 1977 | struct et61x251_sensor* s = &cam->sensor; |
7ce08c93 LR |
1978 | struct v4l2_format format; |
1979 | struct v4l2_pix_format* pix; | |
1980 | struct v4l2_pix_format* pfmt = &(s->pix_format); | |
1981 | struct v4l2_rect* bounds = &(s->cropcap.bounds); | |
1982 | struct v4l2_rect rect; | |
1983 | u8 scale; | |
1984 | const enum et61x251_stream_state stream = cam->stream; | |
1985 | const u32 nbuffers = cam->nbuffers; | |
1986 | u32 i; | |
1987 | int err = 0; | |
1988 | ||
1989 | if (copy_from_user(&format, arg, sizeof(format))) | |
1990 | return -EFAULT; | |
1991 | ||
1992 | pix = &(format.fmt.pix); | |
1993 | ||
1994 | if (format.type != V4L2_BUF_TYPE_VIDEO_CAPTURE) | |
1995 | return -EINVAL; | |
1996 | ||
1997 | memcpy(&rect, &(s->_rect), sizeof(rect)); | |
1998 | ||
1999 | { /* calculate the actual scaling factor */ | |
2000 | u32 a, b; | |
2001 | a = rect.width * rect.height; | |
2002 | b = pix->width * pix->height; | |
2003 | scale = b ? (u8)((a / b) < 4 ? 1 : 2) : 1; | |
2004 | } | |
2005 | ||
2006 | rect.width = scale * pix->width; | |
2007 | rect.height = scale * pix->height; | |
2008 | ||
26563127 LR |
2009 | if (rect.width < 16) |
2010 | rect.width = 16; | |
2011 | if (rect.height < 16) | |
2012 | rect.height = 16; | |
7ce08c93 LR |
2013 | if (rect.width > bounds->left + bounds->width - rect.left) |
2014 | rect.width = bounds->left + bounds->width - rect.left; | |
2015 | if (rect.height > bounds->top + bounds->height - rect.top) | |
2016 | rect.height = bounds->top + bounds->height - rect.top; | |
2017 | ||
26563127 LR |
2018 | rect.width &= ~15L; |
2019 | rect.height &= ~15L; | |
7ce08c93 LR |
2020 | |
2021 | { /* adjust the scaling factor */ | |
2022 | u32 a, b; | |
2023 | a = rect.width * rect.height; | |
2024 | b = pix->width * pix->height; | |
2025 | scale = b ? (u8)((a / b) < 4 ? 1 : 2) : 1; | |
2026 | } | |
2027 | ||
2028 | pix->width = rect.width / scale; | |
2029 | pix->height = rect.height / scale; | |
2030 | ||
2031 | if (pix->pixelformat != V4L2_PIX_FMT_ET61X251 && | |
2032 | pix->pixelformat != V4L2_PIX_FMT_SBGGR8) | |
2033 | pix->pixelformat = pfmt->pixelformat; | |
2034 | pix->priv = pfmt->priv; /* bpp */ | |
3b2ae0be LR |
2035 | pix->colorspace = (pix->pixelformat == V4L2_PIX_FMT_ET61X251) ? |
2036 | 0 : V4L2_COLORSPACE_SRGB; | |
7ce08c93 LR |
2037 | pix->colorspace = pfmt->colorspace; |
2038 | pix->bytesperline = (pix->pixelformat == V4L2_PIX_FMT_ET61X251) | |
d56410e0 | 2039 | ? 0 : (pix->width * pix->priv) / 8; |
7ce08c93 LR |
2040 | pix->sizeimage = pix->height * ((pix->width * pix->priv) / 8); |
2041 | pix->field = V4L2_FIELD_NONE; | |
2042 | ||
2043 | if (cmd == VIDIOC_TRY_FMT) { | |
2044 | if (copy_to_user(arg, &format, sizeof(format))) | |
2045 | return -EFAULT; | |
2046 | return 0; | |
2047 | } | |
2048 | ||
2049 | if (cam->module_param.force_munmap) | |
2050 | for (i = 0; i < cam->nbuffers; i++) | |
2051 | if (cam->frame[i].vma_use_count) { | |
2052 | DBG(3, "VIDIOC_S_FMT failed. " | |
2053 | "Unmap the buffers first."); | |
3b2ae0be | 2054 | return -EBUSY; |
7ce08c93 LR |
2055 | } |
2056 | ||
2057 | if (cam->stream == STREAM_ON) | |
2058 | if ((err = et61x251_stream_interrupt(cam))) | |
2059 | return err; | |
2060 | ||
2061 | if (copy_to_user(arg, &format, sizeof(format))) { | |
2062 | cam->stream = stream; | |
2063 | return -EFAULT; | |
2064 | } | |
2065 | ||
2066 | if (cam->module_param.force_munmap || cam->io == IO_READ) | |
2067 | et61x251_release_buffers(cam); | |
2068 | ||
2069 | err += et61x251_set_pix_format(cam, pix); | |
2070 | err += et61x251_set_crop(cam, &rect); | |
2071 | if (s->set_pix_format) | |
2072 | err += s->set_pix_format(cam, pix); | |
2073 | if (s->set_crop) | |
2074 | err += s->set_crop(cam, &rect); | |
2075 | err += et61x251_set_scale(cam, scale); | |
2076 | ||
2077 | if (err) { /* atomic, no rollback in ioctl() */ | |
2078 | cam->state |= DEV_MISCONFIGURED; | |
2079 | DBG(1, "VIDIOC_S_FMT failed because of hardware problems. To " | |
38c7c036 LP |
2080 | "use the camera, close and open %s again.", |
2081 | video_device_node_name(cam->v4ldev)); | |
7ce08c93 LR |
2082 | return -EIO; |
2083 | } | |
2084 | ||
2085 | memcpy(pfmt, pix, sizeof(*pix)); | |
2086 | memcpy(&(s->_rect), &rect, sizeof(rect)); | |
2087 | ||
2088 | if ((cam->module_param.force_munmap || cam->io == IO_READ) && | |
2089 | nbuffers != et61x251_request_buffers(cam, nbuffers, cam->io)) { | |
2090 | cam->state |= DEV_MISCONFIGURED; | |
2091 | DBG(1, "VIDIOC_S_FMT failed because of not enough memory. To " | |
38c7c036 LP |
2092 | "use the camera, close and open %s again.", |
2093 | video_device_node_name(cam->v4ldev)); | |
7ce08c93 LR |
2094 | return -ENOMEM; |
2095 | } | |
2096 | ||
2097 | if (cam->io == IO_READ) | |
2098 | et61x251_empty_framequeues(cam); | |
2099 | else if (cam->module_param.force_munmap) | |
2100 | et61x251_requeue_outqueue(cam); | |
2101 | ||
2102 | cam->stream = stream; | |
2103 | ||
2104 | return 0; | |
2105 | } | |
2106 | ||
2107 | ||
2108 | static int | |
2109 | et61x251_vidioc_g_jpegcomp(struct et61x251_device* cam, void __user * arg) | |
2110 | { | |
2111 | if (copy_to_user(arg, &cam->compression, | |
d56410e0 | 2112 | sizeof(cam->compression))) |
7ce08c93 LR |
2113 | return -EFAULT; |
2114 | ||
2115 | return 0; | |
2116 | } | |
2117 | ||
2118 | ||
2119 | static int | |
2120 | et61x251_vidioc_s_jpegcomp(struct et61x251_device* cam, void __user * arg) | |
2121 | { | |
2122 | struct v4l2_jpegcompression jc; | |
2123 | const enum et61x251_stream_state stream = cam->stream; | |
2124 | int err = 0; | |
2125 | ||
2126 | if (copy_from_user(&jc, arg, sizeof(jc))) | |
2127 | return -EFAULT; | |
2128 | ||
2129 | if (jc.quality != 0 && jc.quality != 1) | |
2130 | return -EINVAL; | |
2131 | ||
2132 | if (cam->stream == STREAM_ON) | |
2133 | if ((err = et61x251_stream_interrupt(cam))) | |
2134 | return err; | |
2135 | ||
2136 | err += et61x251_set_compression(cam, &jc); | |
2137 | if (err) { /* atomic, no rollback in ioctl() */ | |
2138 | cam->state |= DEV_MISCONFIGURED; | |
2139 | DBG(1, "VIDIOC_S_JPEGCOMP failed because of hardware " | |
2140 | "problems. To use the camera, close and open " | |
38c7c036 | 2141 | "%s again.", video_device_node_name(cam->v4ldev)); |
7ce08c93 LR |
2142 | return -EIO; |
2143 | } | |
2144 | ||
2145 | cam->compression.quality = jc.quality; | |
2146 | ||
2147 | cam->stream = stream; | |
2148 | ||
2149 | return 0; | |
2150 | } | |
2151 | ||
2152 | ||
2153 | static int | |
2154 | et61x251_vidioc_reqbufs(struct et61x251_device* cam, void __user * arg) | |
2155 | { | |
2156 | struct v4l2_requestbuffers rb; | |
2157 | u32 i; | |
2158 | int err; | |
2159 | ||
2160 | if (copy_from_user(&rb, arg, sizeof(rb))) | |
2161 | return -EFAULT; | |
2162 | ||
2163 | if (rb.type != V4L2_BUF_TYPE_VIDEO_CAPTURE || | |
2164 | rb.memory != V4L2_MEMORY_MMAP) | |
2165 | return -EINVAL; | |
2166 | ||
2167 | if (cam->io == IO_READ) { | |
2168 | DBG(3, "Close and open the device again to choose the mmap " | |
2169 | "I/O method"); | |
3b2ae0be | 2170 | return -EBUSY; |
7ce08c93 LR |
2171 | } |
2172 | ||
2173 | for (i = 0; i < cam->nbuffers; i++) | |
2174 | if (cam->frame[i].vma_use_count) { | |
2175 | DBG(3, "VIDIOC_REQBUFS failed. " | |
2176 | "Previous buffers are still mapped."); | |
3b2ae0be | 2177 | return -EBUSY; |
7ce08c93 LR |
2178 | } |
2179 | ||
2180 | if (cam->stream == STREAM_ON) | |
2181 | if ((err = et61x251_stream_interrupt(cam))) | |
2182 | return err; | |
2183 | ||
2184 | et61x251_empty_framequeues(cam); | |
2185 | ||
2186 | et61x251_release_buffers(cam); | |
2187 | if (rb.count) | |
2188 | rb.count = et61x251_request_buffers(cam, rb.count, IO_MMAP); | |
2189 | ||
2190 | if (copy_to_user(arg, &rb, sizeof(rb))) { | |
2191 | et61x251_release_buffers(cam); | |
2192 | cam->io = IO_NONE; | |
2193 | return -EFAULT; | |
2194 | } | |
2195 | ||
2196 | cam->io = rb.count ? IO_MMAP : IO_NONE; | |
2197 | ||
2198 | return 0; | |
2199 | } | |
2200 | ||
2201 | ||
2202 | static int | |
2203 | et61x251_vidioc_querybuf(struct et61x251_device* cam, void __user * arg) | |
2204 | { | |
2205 | struct v4l2_buffer b; | |
2206 | ||
2207 | if (copy_from_user(&b, arg, sizeof(b))) | |
2208 | return -EFAULT; | |
2209 | ||
2210 | if (b.type != V4L2_BUF_TYPE_VIDEO_CAPTURE || | |
2211 | b.index >= cam->nbuffers || cam->io != IO_MMAP) | |
2212 | return -EINVAL; | |
2213 | ||
2214 | memcpy(&b, &cam->frame[b.index].buf, sizeof(b)); | |
2215 | ||
2216 | if (cam->frame[b.index].vma_use_count) | |
2217 | b.flags |= V4L2_BUF_FLAG_MAPPED; | |
2218 | ||
2219 | if (cam->frame[b.index].state == F_DONE) | |
2220 | b.flags |= V4L2_BUF_FLAG_DONE; | |
2221 | else if (cam->frame[b.index].state != F_UNUSED) | |
2222 | b.flags |= V4L2_BUF_FLAG_QUEUED; | |
2223 | ||
2224 | if (copy_to_user(arg, &b, sizeof(b))) | |
2225 | return -EFAULT; | |
2226 | ||
2227 | return 0; | |
2228 | } | |
2229 | ||
2230 | ||
2231 | static int | |
2232 | et61x251_vidioc_qbuf(struct et61x251_device* cam, void __user * arg) | |
2233 | { | |
2234 | struct v4l2_buffer b; | |
2235 | unsigned long lock_flags; | |
2236 | ||
2237 | if (copy_from_user(&b, arg, sizeof(b))) | |
2238 | return -EFAULT; | |
2239 | ||
2240 | if (b.type != V4L2_BUF_TYPE_VIDEO_CAPTURE || | |
2241 | b.index >= cam->nbuffers || cam->io != IO_MMAP) | |
2242 | return -EINVAL; | |
2243 | ||
2244 | if (cam->frame[b.index].state != F_UNUSED) | |
2245 | return -EINVAL; | |
2246 | ||
2247 | cam->frame[b.index].state = F_QUEUED; | |
2248 | ||
2249 | spin_lock_irqsave(&cam->queue_lock, lock_flags); | |
2250 | list_add_tail(&cam->frame[b.index].frame, &cam->inqueue); | |
2251 | spin_unlock_irqrestore(&cam->queue_lock, lock_flags); | |
2252 | ||
2253 | PDBGG("Frame #%lu queued", (unsigned long)b.index); | |
2254 | ||
2255 | return 0; | |
2256 | } | |
2257 | ||
2258 | ||
2259 | static int | |
2260 | et61x251_vidioc_dqbuf(struct et61x251_device* cam, struct file* filp, | |
d56410e0 | 2261 | void __user * arg) |
7ce08c93 LR |
2262 | { |
2263 | struct v4l2_buffer b; | |
2264 | struct et61x251_frame_t *f; | |
2265 | unsigned long lock_flags; | |
ccad7789 | 2266 | long timeout; |
7ce08c93 LR |
2267 | |
2268 | if (copy_from_user(&b, arg, sizeof(b))) | |
2269 | return -EFAULT; | |
2270 | ||
2271 | if (b.type != V4L2_BUF_TYPE_VIDEO_CAPTURE || cam->io!= IO_MMAP) | |
2272 | return -EINVAL; | |
2273 | ||
2274 | if (list_empty(&cam->outqueue)) { | |
2275 | if (cam->stream == STREAM_OFF) | |
2276 | return -EINVAL; | |
2277 | if (filp->f_flags & O_NONBLOCK) | |
2278 | return -EAGAIN; | |
ccad7789 | 2279 | timeout = wait_event_interruptible_timeout |
d56410e0 MCC |
2280 | ( cam->wait_frame, |
2281 | (!list_empty(&cam->outqueue)) || | |
2282 | (cam->state & DEV_DISCONNECTED) || | |
2283 | (cam->state & DEV_MISCONFIGURED), | |
2284 | cam->module_param.frame_timeout * | |
2285 | 1000 * msecs_to_jiffies(1) ); | |
ccad7789 LR |
2286 | if (timeout < 0) |
2287 | return timeout; | |
7ce08c93 LR |
2288 | if (cam->state & DEV_DISCONNECTED) |
2289 | return -ENODEV; | |
ccad7789 | 2290 | if (!timeout || (cam->state & DEV_MISCONFIGURED)) |
7ce08c93 LR |
2291 | return -EIO; |
2292 | } | |
2293 | ||
2294 | spin_lock_irqsave(&cam->queue_lock, lock_flags); | |
2295 | f = list_entry(cam->outqueue.next, struct et61x251_frame_t, frame); | |
2296 | list_del(cam->outqueue.next); | |
2297 | spin_unlock_irqrestore(&cam->queue_lock, lock_flags); | |
2298 | ||
2299 | f->state = F_UNUSED; | |
2300 | ||
2301 | memcpy(&b, &f->buf, sizeof(b)); | |
2302 | if (f->vma_use_count) | |
2303 | b.flags |= V4L2_BUF_FLAG_MAPPED; | |
2304 | ||
2305 | if (copy_to_user(arg, &b, sizeof(b))) | |
2306 | return -EFAULT; | |
2307 | ||
2308 | PDBGG("Frame #%lu dequeued", (unsigned long)f->buf.index); | |
2309 | ||
2310 | return 0; | |
2311 | } | |
2312 | ||
2313 | ||
2314 | static int | |
2315 | et61x251_vidioc_streamon(struct et61x251_device* cam, void __user * arg) | |
2316 | { | |
2317 | int type; | |
2318 | ||
2319 | if (copy_from_user(&type, arg, sizeof(type))) | |
2320 | return -EFAULT; | |
2321 | ||
2322 | if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE || cam->io != IO_MMAP) | |
2323 | return -EINVAL; | |
2324 | ||
7ce08c93 LR |
2325 | cam->stream = STREAM_ON; |
2326 | ||
2327 | DBG(3, "Stream on"); | |
2328 | ||
2329 | return 0; | |
2330 | } | |
2331 | ||
2332 | ||
2333 | static int | |
2334 | et61x251_vidioc_streamoff(struct et61x251_device* cam, void __user * arg) | |
2335 | { | |
2336 | int type, err; | |
2337 | ||
2338 | if (copy_from_user(&type, arg, sizeof(type))) | |
2339 | return -EFAULT; | |
2340 | ||
2341 | if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE || cam->io != IO_MMAP) | |
2342 | return -EINVAL; | |
2343 | ||
2344 | if (cam->stream == STREAM_ON) | |
2345 | if ((err = et61x251_stream_interrupt(cam))) | |
2346 | return err; | |
2347 | ||
2348 | et61x251_empty_framequeues(cam); | |
2349 | ||
2350 | DBG(3, "Stream off"); | |
2351 | ||
2352 | return 0; | |
2353 | } | |
2354 | ||
2355 | ||
2356 | static int | |
2357 | et61x251_vidioc_g_parm(struct et61x251_device* cam, void __user * arg) | |
2358 | { | |
2359 | struct v4l2_streamparm sp; | |
2360 | ||
2361 | if (copy_from_user(&sp, arg, sizeof(sp))) | |
2362 | return -EFAULT; | |
2363 | ||
2364 | if (sp.type != V4L2_BUF_TYPE_VIDEO_CAPTURE) | |
2365 | return -EINVAL; | |
2366 | ||
2367 | sp.parm.capture.extendedmode = 0; | |
2368 | sp.parm.capture.readbuffers = cam->nreadbuffers; | |
2369 | ||
2370 | if (copy_to_user(arg, &sp, sizeof(sp))) | |
2371 | return -EFAULT; | |
2372 | ||
2373 | return 0; | |
2374 | } | |
2375 | ||
2376 | ||
2377 | static int | |
2378 | et61x251_vidioc_s_parm(struct et61x251_device* cam, void __user * arg) | |
2379 | { | |
2380 | struct v4l2_streamparm sp; | |
2381 | ||
2382 | if (copy_from_user(&sp, arg, sizeof(sp))) | |
2383 | return -EFAULT; | |
2384 | ||
2385 | if (sp.type != V4L2_BUF_TYPE_VIDEO_CAPTURE) | |
2386 | return -EINVAL; | |
2387 | ||
2388 | sp.parm.capture.extendedmode = 0; | |
2389 | ||
2390 | if (sp.parm.capture.readbuffers == 0) | |
2391 | sp.parm.capture.readbuffers = cam->nreadbuffers; | |
2392 | ||
2393 | if (sp.parm.capture.readbuffers > ET61X251_MAX_FRAMES) | |
2394 | sp.parm.capture.readbuffers = ET61X251_MAX_FRAMES; | |
2395 | ||
2396 | if (copy_to_user(arg, &sp, sizeof(sp))) | |
2397 | return -EFAULT; | |
2398 | ||
2399 | cam->nreadbuffers = sp.parm.capture.readbuffers; | |
2400 | ||
2401 | return 0; | |
2402 | } | |
2403 | ||
2404 | ||
069b7479 | 2405 | static long et61x251_ioctl_v4l2(struct file *filp, |
bec43661 | 2406 | unsigned int cmd, void __user *arg) |
7ce08c93 | 2407 | { |
c170ecf4 | 2408 | struct et61x251_device *cam = video_drvdata(filp); |
7ce08c93 LR |
2409 | |
2410 | switch (cmd) { | |
2411 | ||
2412 | case VIDIOC_QUERYCAP: | |
2413 | return et61x251_vidioc_querycap(cam, arg); | |
2414 | ||
2415 | case VIDIOC_ENUMINPUT: | |
2416 | return et61x251_vidioc_enuminput(cam, arg); | |
2417 | ||
2418 | case VIDIOC_G_INPUT: | |
ccad7789 LR |
2419 | return et61x251_vidioc_g_input(cam, arg); |
2420 | ||
7ce08c93 | 2421 | case VIDIOC_S_INPUT: |
ccad7789 | 2422 | return et61x251_vidioc_s_input(cam, arg); |
7ce08c93 LR |
2423 | |
2424 | case VIDIOC_QUERYCTRL: | |
2425 | return et61x251_vidioc_query_ctrl(cam, arg); | |
2426 | ||
2427 | case VIDIOC_G_CTRL: | |
2428 | return et61x251_vidioc_g_ctrl(cam, arg); | |
2429 | ||
7ce08c93 LR |
2430 | case VIDIOC_S_CTRL: |
2431 | return et61x251_vidioc_s_ctrl(cam, arg); | |
2432 | ||
7ce08c93 LR |
2433 | case VIDIOC_CROPCAP: |
2434 | return et61x251_vidioc_cropcap(cam, arg); | |
2435 | ||
2436 | case VIDIOC_G_CROP: | |
2437 | return et61x251_vidioc_g_crop(cam, arg); | |
2438 | ||
2439 | case VIDIOC_S_CROP: | |
2440 | return et61x251_vidioc_s_crop(cam, arg); | |
2441 | ||
2442 | case VIDIOC_ENUM_FMT: | |
2443 | return et61x251_vidioc_enum_fmt(cam, arg); | |
2444 | ||
2445 | case VIDIOC_G_FMT: | |
2446 | return et61x251_vidioc_g_fmt(cam, arg); | |
2447 | ||
2448 | case VIDIOC_TRY_FMT: | |
2449 | case VIDIOC_S_FMT: | |
2450 | return et61x251_vidioc_try_s_fmt(cam, cmd, arg); | |
2451 | ||
26563127 LR |
2452 | case VIDIOC_ENUM_FRAMESIZES: |
2453 | return et61x251_vidioc_enum_framesizes(cam, arg); | |
2454 | ||
7ce08c93 LR |
2455 | case VIDIOC_G_JPEGCOMP: |
2456 | return et61x251_vidioc_g_jpegcomp(cam, arg); | |
2457 | ||
2458 | case VIDIOC_S_JPEGCOMP: | |
2459 | return et61x251_vidioc_s_jpegcomp(cam, arg); | |
2460 | ||
2461 | case VIDIOC_REQBUFS: | |
2462 | return et61x251_vidioc_reqbufs(cam, arg); | |
2463 | ||
2464 | case VIDIOC_QUERYBUF: | |
2465 | return et61x251_vidioc_querybuf(cam, arg); | |
2466 | ||
2467 | case VIDIOC_QBUF: | |
2468 | return et61x251_vidioc_qbuf(cam, arg); | |
2469 | ||
2470 | case VIDIOC_DQBUF: | |
2471 | return et61x251_vidioc_dqbuf(cam, filp, arg); | |
2472 | ||
2473 | case VIDIOC_STREAMON: | |
2474 | return et61x251_vidioc_streamon(cam, arg); | |
2475 | ||
2476 | case VIDIOC_STREAMOFF: | |
2477 | return et61x251_vidioc_streamoff(cam, arg); | |
2478 | ||
2479 | case VIDIOC_G_PARM: | |
2480 | return et61x251_vidioc_g_parm(cam, arg); | |
2481 | ||
7ce08c93 LR |
2482 | case VIDIOC_S_PARM: |
2483 | return et61x251_vidioc_s_parm(cam, arg); | |
2484 | ||
7ce08c93 | 2485 | default: |
7a286cc1 | 2486 | return -ENOTTY; |
7ce08c93 LR |
2487 | |
2488 | } | |
2489 | } | |
2490 | ||
2491 | ||
069b7479 | 2492 | static long et61x251_ioctl(struct file *filp, |
d56410e0 | 2493 | unsigned int cmd, unsigned long arg) |
7ce08c93 | 2494 | { |
c170ecf4 | 2495 | struct et61x251_device *cam = video_drvdata(filp); |
069b7479 | 2496 | long err = 0; |
7ce08c93 | 2497 | |
ccad7789 | 2498 | if (mutex_lock_interruptible(&cam->fileop_mutex)) |
7ce08c93 LR |
2499 | return -ERESTARTSYS; |
2500 | ||
2501 | if (cam->state & DEV_DISCONNECTED) { | |
2502 | DBG(1, "Device not present"); | |
ccad7789 | 2503 | mutex_unlock(&cam->fileop_mutex); |
7ce08c93 LR |
2504 | return -ENODEV; |
2505 | } | |
2506 | ||
2507 | if (cam->state & DEV_MISCONFIGURED) { | |
2508 | DBG(1, "The camera is misconfigured. Close and open it " | |
2509 | "again."); | |
ccad7789 | 2510 | mutex_unlock(&cam->fileop_mutex); |
7ce08c93 LR |
2511 | return -EIO; |
2512 | } | |
2513 | ||
2514 | V4LDBG(3, "et61x251", cmd); | |
2515 | ||
bec43661 | 2516 | err = et61x251_ioctl_v4l2(filp, cmd, (void __user *)arg); |
7ce08c93 | 2517 | |
ccad7789 | 2518 | mutex_unlock(&cam->fileop_mutex); |
7ce08c93 LR |
2519 | |
2520 | return err; | |
2521 | } | |
2522 | ||
2523 | ||
bec43661 | 2524 | static const struct v4l2_file_operations et61x251_fops = { |
7ce08c93 LR |
2525 | .owner = THIS_MODULE, |
2526 | .open = et61x251_open, | |
2527 | .release = et61x251_release, | |
ca262196 | 2528 | .unlocked_ioctl = et61x251_ioctl, |
7ce08c93 LR |
2529 | .read = et61x251_read, |
2530 | .poll = et61x251_poll, | |
2531 | .mmap = et61x251_mmap, | |
7ce08c93 LR |
2532 | }; |
2533 | ||
2534 | /*****************************************************************************/ | |
2535 | ||
2536 | /* It exists a single interface only. We do not need to validate anything. */ | |
2537 | static int | |
2538 | et61x251_usb_probe(struct usb_interface* intf, const struct usb_device_id* id) | |
2539 | { | |
2540 | struct usb_device *udev = interface_to_usbdev(intf); | |
2541 | struct et61x251_device* cam; | |
ff699e6b | 2542 | static unsigned int dev_nr; |
7ce08c93 LR |
2543 | unsigned int i; |
2544 | int err = 0; | |
2545 | ||
2546 | if (!(cam = kzalloc(sizeof(struct et61x251_device), GFP_KERNEL))) | |
2547 | return -ENOMEM; | |
2548 | ||
2549 | cam->usbdev = udev; | |
2550 | ||
2551 | if (!(cam->control_buffer = kzalloc(8, GFP_KERNEL))) { | |
2552 | DBG(1, "kmalloc() failed"); | |
2553 | err = -ENOMEM; | |
2554 | goto fail; | |
2555 | } | |
2556 | ||
2557 | if (!(cam->v4ldev = video_device_alloc())) { | |
2558 | DBG(1, "video_device_alloc() failed"); | |
2559 | err = -ENOMEM; | |
2560 | goto fail; | |
2561 | } | |
2562 | ||
7ce08c93 | 2563 | DBG(2, "ET61X[12]51 PC Camera Controller detected " |
26563127 | 2564 | "(vid/pid 0x%04X:0x%04X)",id->idVendor, id->idProduct); |
7ce08c93 LR |
2565 | |
2566 | for (i = 0; et61x251_sensor_table[i]; i++) { | |
2567 | err = et61x251_sensor_table[i](cam); | |
2568 | if (!err) | |
2569 | break; | |
2570 | } | |
2571 | ||
ccad7789 LR |
2572 | if (!err) |
2573 | DBG(2, "%s image sensor detected", cam->sensor.name); | |
7ce08c93 LR |
2574 | else { |
2575 | DBG(1, "No supported image sensor detected"); | |
2576 | err = -ENODEV; | |
2577 | goto fail; | |
2578 | } | |
2579 | ||
2580 | if (et61x251_init(cam)) { | |
2581 | DBG(1, "Initialization failed. I will retry on open()."); | |
2582 | cam->state |= DEV_MISCONFIGURED; | |
2583 | } | |
2584 | ||
2585 | strcpy(cam->v4ldev->name, "ET61X[12]51 PC Camera"); | |
7ce08c93 | 2586 | cam->v4ldev->fops = &et61x251_fops; |
7ce08c93 | 2587 | cam->v4ldev->release = video_device_release; |
748c7f80 | 2588 | cam->v4ldev->parent = &udev->dev; |
7ce08c93 LR |
2589 | video_set_drvdata(cam->v4ldev, cam); |
2590 | ||
3b2ae0be | 2591 | init_completion(&cam->probe); |
7ce08c93 LR |
2592 | |
2593 | err = video_register_device(cam->v4ldev, VFL_TYPE_GRABBER, | |
d56410e0 | 2594 | video_nr[dev_nr]); |
7ce08c93 LR |
2595 | if (err) { |
2596 | DBG(1, "V4L2 device registration failed"); | |
2597 | if (err == -ENFILE && video_nr[dev_nr] == -1) | |
2598 | DBG(1, "Free /dev/videoX node not found"); | |
2599 | video_nr[dev_nr] = -1; | |
2600 | dev_nr = (dev_nr < ET61X251_MAX_DEVICES-1) ? dev_nr+1 : 0; | |
3b2ae0be | 2601 | complete_all(&cam->probe); |
7ce08c93 LR |
2602 | goto fail; |
2603 | } | |
2604 | ||
38c7c036 LP |
2605 | DBG(2, "V4L2 device registered as %s", |
2606 | video_device_node_name(cam->v4ldev)); | |
7ce08c93 LR |
2607 | |
2608 | cam->module_param.force_munmap = force_munmap[dev_nr]; | |
ccad7789 | 2609 | cam->module_param.frame_timeout = frame_timeout[dev_nr]; |
7ce08c93 LR |
2610 | |
2611 | dev_nr = (dev_nr < ET61X251_MAX_DEVICES-1) ? dev_nr+1 : 0; | |
2612 | ||
2613 | #ifdef CONFIG_VIDEO_ADV_DEBUG | |
c12e3be0 | 2614 | err = et61x251_create_sysfs(cam); |
26563127 LR |
2615 | if (!err) |
2616 | DBG(2, "Optional device control through 'sysfs' " | |
2617 | "interface ready"); | |
2618 | else | |
2619 | DBG(2, "Failed to create 'sysfs' interface for optional " | |
2620 | "device controlling. Error #%d", err); | |
2621 | #else | |
2622 | DBG(2, "Optional device control through 'sysfs' interface disabled"); | |
3b2ae0be LR |
2623 | DBG(3, "Compile the kernel with the 'CONFIG_VIDEO_ADV_DEBUG' " |
2624 | "configuration option to enable it."); | |
7ce08c93 LR |
2625 | #endif |
2626 | ||
2627 | usb_set_intfdata(intf, cam); | |
3b2ae0be LR |
2628 | kref_init(&cam->kref); |
2629 | usb_get_dev(cam->usbdev); | |
7ce08c93 | 2630 | |
3b2ae0be | 2631 | complete_all(&cam->probe); |
7ce08c93 LR |
2632 | |
2633 | return 0; | |
2634 | ||
2635 | fail: | |
2636 | if (cam) { | |
2637 | kfree(cam->control_buffer); | |
2638 | if (cam->v4ldev) | |
2639 | video_device_release(cam->v4ldev); | |
2640 | kfree(cam); | |
2641 | } | |
2642 | return err; | |
2643 | } | |
2644 | ||
2645 | ||
2646 | static void et61x251_usb_disconnect(struct usb_interface* intf) | |
2647 | { | |
3b2ae0be | 2648 | struct et61x251_device* cam; |
7ce08c93 | 2649 | |
3b2ae0be | 2650 | down_write(&et61x251_dev_lock); |
7ce08c93 | 2651 | |
3b2ae0be | 2652 | cam = usb_get_intfdata(intf); |
7ce08c93 LR |
2653 | |
2654 | DBG(2, "Disconnecting %s...", cam->v4ldev->name); | |
2655 | ||
7ce08c93 | 2656 | if (cam->users) { |
38c7c036 LP |
2657 | DBG(2, "Device %s is open! Deregistration and memory " |
2658 | "deallocation are deferred.", | |
2659 | video_device_node_name(cam->v4ldev)); | |
7ce08c93 LR |
2660 | cam->state |= DEV_MISCONFIGURED; |
2661 | et61x251_stop_transfer(cam); | |
2662 | cam->state |= DEV_DISCONNECTED; | |
2663 | wake_up_interruptible(&cam->wait_frame); | |
ccad7789 | 2664 | wake_up(&cam->wait_stream); |
3b2ae0be | 2665 | } else |
7ce08c93 | 2666 | cam->state |= DEV_DISCONNECTED; |
7ce08c93 | 2667 | |
3b2ae0be | 2668 | wake_up_interruptible_all(&cam->wait_open); |
7ce08c93 | 2669 | |
3b2ae0be | 2670 | kref_put(&cam->kref, et61x251_release_resources); |
7ce08c93 | 2671 | |
3b2ae0be | 2672 | up_write(&et61x251_dev_lock); |
7ce08c93 LR |
2673 | } |
2674 | ||
2675 | ||
2676 | static struct usb_driver et61x251_usb_driver = { | |
2677 | .name = "et61x251", | |
2678 | .id_table = et61x251_id_table, | |
2679 | .probe = et61x251_usb_probe, | |
2680 | .disconnect = et61x251_usb_disconnect, | |
2681 | }; | |
2682 | ||
ecb3b2b3 | 2683 | module_usb_driver(et61x251_usb_driver); |