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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 | ||
21 | #include <linux/module.h> | |
22 | #include <linux/init.h> | |
23 | #include <linux/kernel.h> | |
24 | #include <linux/param.h> | |
7ce08c93 LR |
25 | #include <linux/errno.h> |
26 | #include <linux/slab.h> | |
7ce08c93 LR |
27 | #include <linux/device.h> |
28 | #include <linux/fs.h> | |
29 | #include <linux/delay.h> | |
7ce08c93 LR |
30 | #include <linux/compiler.h> |
31 | #include <linux/ioctl.h> | |
32 | #include <linux/poll.h> | |
33 | #include <linux/stat.h> | |
34 | #include <linux/mm.h> | |
35 | #include <linux/vmalloc.h> | |
36 | #include <linux/page-flags.h> | |
35ea11ff | 37 | #include <media/v4l2-ioctl.h> |
9a6ab769 | 38 | #include <asm/byteorder.h> |
7ce08c93 LR |
39 | #include <asm/page.h> |
40 | #include <asm/uaccess.h> | |
41 | ||
42 | #include "et61x251.h" | |
43 | ||
44 | /*****************************************************************************/ | |
45 | ||
46 | #define ET61X251_MODULE_NAME "V4L2 driver for ET61X[12]51 " \ | |
d56410e0 | 47 | "PC Camera Controllers" |
3b2ae0be | 48 | #define ET61X251_MODULE_AUTHOR "(C) 2006-2007 Luca Risolia" |
7ce08c93 LR |
49 | #define ET61X251_AUTHOR_EMAIL "<luca.risolia@studio.unibo.it>" |
50 | #define ET61X251_MODULE_LICENSE "GPL" | |
3b2ae0be LR |
51 | #define ET61X251_MODULE_VERSION "1:1.09" |
52 | #define ET61X251_MODULE_VERSION_CODE KERNEL_VERSION(1, 1, 9) | |
7ce08c93 LR |
53 | |
54 | /*****************************************************************************/ | |
55 | ||
56 | MODULE_DEVICE_TABLE(usb, et61x251_id_table); | |
57 | ||
58 | MODULE_AUTHOR(ET61X251_MODULE_AUTHOR " " ET61X251_AUTHOR_EMAIL); | |
59 | MODULE_DESCRIPTION(ET61X251_MODULE_NAME); | |
60 | MODULE_VERSION(ET61X251_MODULE_VERSION); | |
61 | MODULE_LICENSE(ET61X251_MODULE_LICENSE); | |
62 | ||
63 | static short video_nr[] = {[0 ... ET61X251_MAX_DEVICES-1] = -1}; | |
64 | module_param_array(video_nr, short, NULL, 0444); | |
65 | MODULE_PARM_DESC(video_nr, | |
d56410e0 MCC |
66 | "\n<-1|n[,...]> Specify V4L2 minor mode number." |
67 | "\n -1 = use next available (default)" | |
68 | "\n n = use minor number n (integer >= 0)" | |
69 | "\nYou can specify up to " | |
70 | __MODULE_STRING(ET61X251_MAX_DEVICES) " cameras this way." | |
71 | "\nFor example:" | |
72 | "\nvideo_nr=-1,2,-1 would assign minor number 2 to" | |
73 | "\nthe second registered camera and use auto for the first" | |
74 | "\none and for every other camera." | |
75 | "\n"); | |
7ce08c93 LR |
76 | |
77 | static short force_munmap[] = {[0 ... ET61X251_MAX_DEVICES-1] = | |
d56410e0 | 78 | ET61X251_FORCE_MUNMAP}; |
7ce08c93 LR |
79 | module_param_array(force_munmap, bool, NULL, 0444); |
80 | MODULE_PARM_DESC(force_munmap, | |
d56410e0 MCC |
81 | "\n<0|1[,...]> Force the application to unmap previously" |
82 | "\nmapped buffer memory before calling any VIDIOC_S_CROP or" | |
83 | "\nVIDIOC_S_FMT ioctl's. Not all the applications support" | |
84 | "\nthis feature. This parameter is specific for each" | |
85 | "\ndetected camera." | |
86 | "\n 0 = do not force memory unmapping" | |
87 | "\n 1 = force memory unmapping (save memory)" | |
26563127 | 88 | "\nDefault value is "__MODULE_STRING(ET61X251_FORCE_MUNMAP)"." |
d56410e0 | 89 | "\n"); |
7ce08c93 | 90 | |
ccad7789 | 91 | static unsigned int frame_timeout[] = {[0 ... ET61X251_MAX_DEVICES-1] = |
d56410e0 | 92 | ET61X251_FRAME_TIMEOUT}; |
ccad7789 LR |
93 | module_param_array(frame_timeout, uint, NULL, 0644); |
94 | MODULE_PARM_DESC(frame_timeout, | |
d56410e0 MCC |
95 | "\n<n[,...]> Timeout for a video frame in seconds." |
96 | "\nThis parameter is specific for each detected camera." | |
97 | "\nDefault value is " | |
98 | __MODULE_STRING(ET61X251_FRAME_TIMEOUT)"." | |
99 | "\n"); | |
ccad7789 | 100 | |
7ce08c93 LR |
101 | #ifdef ET61X251_DEBUG |
102 | static unsigned short debug = ET61X251_DEBUG_LEVEL; | |
103 | module_param(debug, ushort, 0644); | |
104 | MODULE_PARM_DESC(debug, | |
d56410e0 MCC |
105 | "\n<n> Debugging information level, from 0 to 3:" |
106 | "\n0 = none (use carefully)" | |
107 | "\n1 = critical errors" | |
108 | "\n2 = significant informations" | |
109 | "\n3 = more verbose messages" | |
110 | "\nLevel 3 is useful for testing only, when only " | |
111 | "one device is used." | |
112 | "\nDefault value is "__MODULE_STRING(ET61X251_DEBUG_LEVEL)"." | |
113 | "\n"); | |
7ce08c93 LR |
114 | #endif |
115 | ||
116 | /*****************************************************************************/ | |
117 | ||
118 | static u32 | |
119 | et61x251_request_buffers(struct et61x251_device* cam, u32 count, | |
d56410e0 | 120 | enum et61x251_io_method io) |
7ce08c93 | 121 | { |
ccad7789 LR |
122 | struct v4l2_pix_format* p = &(cam->sensor.pix_format); |
123 | struct v4l2_rect* r = &(cam->sensor.cropcap.bounds); | |
7ce08c93 | 124 | const size_t imagesize = cam->module_param.force_munmap || |
d56410e0 MCC |
125 | io == IO_READ ? |
126 | (p->width * p->height * p->priv) / 8 : | |
127 | (r->width * r->height * p->priv) / 8; | |
7ce08c93 LR |
128 | void* buff = NULL; |
129 | u32 i; | |
130 | ||
131 | if (count > ET61X251_MAX_FRAMES) | |
132 | count = ET61X251_MAX_FRAMES; | |
133 | ||
134 | cam->nbuffers = count; | |
135 | while (cam->nbuffers > 0) { | |
26563127 LR |
136 | if ((buff = vmalloc_32_user(cam->nbuffers * |
137 | PAGE_ALIGN(imagesize)))) | |
7ce08c93 LR |
138 | break; |
139 | cam->nbuffers--; | |
140 | } | |
141 | ||
142 | for (i = 0; i < cam->nbuffers; i++) { | |
143 | cam->frame[i].bufmem = buff + i*PAGE_ALIGN(imagesize); | |
144 | cam->frame[i].buf.index = i; | |
145 | cam->frame[i].buf.m.offset = i*PAGE_ALIGN(imagesize); | |
146 | cam->frame[i].buf.length = imagesize; | |
147 | cam->frame[i].buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
148 | cam->frame[i].buf.sequence = 0; | |
149 | cam->frame[i].buf.field = V4L2_FIELD_NONE; | |
150 | cam->frame[i].buf.memory = V4L2_MEMORY_MMAP; | |
151 | cam->frame[i].buf.flags = 0; | |
152 | } | |
153 | ||
154 | return cam->nbuffers; | |
155 | } | |
156 | ||
157 | ||
158 | static void et61x251_release_buffers(struct et61x251_device* cam) | |
159 | { | |
160 | if (cam->nbuffers) { | |
161 | vfree(cam->frame[0].bufmem); | |
162 | cam->nbuffers = 0; | |
163 | } | |
164 | cam->frame_current = NULL; | |
165 | } | |
166 | ||
167 | ||
168 | static void et61x251_empty_framequeues(struct et61x251_device* cam) | |
169 | { | |
170 | u32 i; | |
171 | ||
172 | INIT_LIST_HEAD(&cam->inqueue); | |
173 | INIT_LIST_HEAD(&cam->outqueue); | |
174 | ||
175 | for (i = 0; i < ET61X251_MAX_FRAMES; i++) { | |
176 | cam->frame[i].state = F_UNUSED; | |
177 | cam->frame[i].buf.bytesused = 0; | |
178 | } | |
179 | } | |
180 | ||
181 | ||
182 | static void et61x251_requeue_outqueue(struct et61x251_device* cam) | |
183 | { | |
184 | struct et61x251_frame_t *i; | |
185 | ||
186 | list_for_each_entry(i, &cam->outqueue, frame) { | |
187 | i->state = F_QUEUED; | |
188 | list_add(&i->frame, &cam->inqueue); | |
189 | } | |
190 | ||
191 | INIT_LIST_HEAD(&cam->outqueue); | |
192 | } | |
193 | ||
194 | ||
195 | static void et61x251_queue_unusedframes(struct et61x251_device* cam) | |
196 | { | |
197 | unsigned long lock_flags; | |
198 | u32 i; | |
199 | ||
200 | for (i = 0; i < cam->nbuffers; i++) | |
201 | if (cam->frame[i].state == F_UNUSED) { | |
202 | cam->frame[i].state = F_QUEUED; | |
203 | spin_lock_irqsave(&cam->queue_lock, lock_flags); | |
204 | list_add_tail(&cam->frame[i].frame, &cam->inqueue); | |
205 | spin_unlock_irqrestore(&cam->queue_lock, lock_flags); | |
206 | } | |
207 | } | |
208 | ||
209 | /*****************************************************************************/ | |
210 | ||
211 | int et61x251_write_reg(struct et61x251_device* cam, u8 value, u16 index) | |
212 | { | |
213 | struct usb_device* udev = cam->usbdev; | |
214 | u8* buff = cam->control_buffer; | |
215 | int res; | |
216 | ||
217 | *buff = value; | |
218 | ||
219 | res = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x00, 0x41, | |
d56410e0 | 220 | 0, index, buff, 1, ET61X251_CTRL_TIMEOUT); |
7ce08c93 LR |
221 | if (res < 0) { |
222 | DBG(3, "Failed to write a register (value 0x%02X, index " | |
223 | "0x%02X, error %d)", value, index, res); | |
224 | return -1; | |
225 | } | |
226 | ||
227 | return 0; | |
228 | } | |
229 | ||
230 | ||
f760d618 | 231 | static int et61x251_read_reg(struct et61x251_device* cam, u16 index) |
7ce08c93 LR |
232 | { |
233 | struct usb_device* udev = cam->usbdev; | |
234 | u8* buff = cam->control_buffer; | |
235 | int res; | |
236 | ||
237 | res = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x00, 0xc1, | |
d56410e0 | 238 | 0, index, buff, 1, ET61X251_CTRL_TIMEOUT); |
7ce08c93 LR |
239 | if (res < 0) |
240 | DBG(3, "Failed to read a register (index 0x%02X, error %d)", | |
241 | index, res); | |
242 | ||
243 | return (res >= 0) ? (int)(*buff) : -1; | |
244 | } | |
245 | ||
246 | ||
247 | static int | |
3b2ae0be LR |
248 | et61x251_i2c_wait(struct et61x251_device* cam, |
249 | const struct et61x251_sensor* sensor) | |
7ce08c93 LR |
250 | { |
251 | int i, r; | |
252 | ||
253 | for (i = 1; i <= 8; i++) { | |
254 | if (sensor->interface == ET61X251_I2C_3WIRES) { | |
255 | r = et61x251_read_reg(cam, 0x8e); | |
256 | if (!(r & 0x02) && (r >= 0)) | |
257 | return 0; | |
258 | } else { | |
259 | r = et61x251_read_reg(cam, 0x8b); | |
260 | if (!(r & 0x01) && (r >= 0)) | |
261 | return 0; | |
262 | } | |
263 | if (r < 0) | |
264 | return -EIO; | |
265 | udelay(8*8); /* minimum for sensors at 400kHz */ | |
266 | } | |
267 | ||
268 | return -EBUSY; | |
269 | } | |
270 | ||
271 | ||
7ce08c93 LR |
272 | int |
273 | et61x251_i2c_raw_write(struct et61x251_device* cam, u8 n, u8 data1, u8 data2, | |
d56410e0 MCC |
274 | u8 data3, u8 data4, u8 data5, u8 data6, u8 data7, |
275 | u8 data8, u8 address) | |
7ce08c93 LR |
276 | { |
277 | struct usb_device* udev = cam->usbdev; | |
278 | u8* data = cam->control_buffer; | |
279 | int err = 0, res; | |
280 | ||
7ce08c93 LR |
281 | data[0] = data2; |
282 | data[1] = data3; | |
283 | data[2] = data4; | |
284 | data[3] = data5; | |
285 | data[4] = data6; | |
286 | data[5] = data7; | |
287 | data[6] = data8; | |
288 | res = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x00, 0x41, | |
d56410e0 | 289 | 0, 0x81, data, n-1, ET61X251_CTRL_TIMEOUT); |
7ce08c93 LR |
290 | if (res < 0) |
291 | err += res; | |
292 | ||
293 | data[0] = address; | |
ccad7789 LR |
294 | data[1] = cam->sensor.i2c_slave_id; |
295 | data[2] = cam->sensor.rsta | 0x02 | (n << 4); | |
7ce08c93 | 296 | res = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x00, 0x41, |
d56410e0 | 297 | 0, 0x88, data, 3, ET61X251_CTRL_TIMEOUT); |
7ce08c93 LR |
298 | if (res < 0) |
299 | err += res; | |
300 | ||
301 | /* Start writing through the serial interface */ | |
302 | data[0] = data1; | |
303 | res = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x00, 0x41, | |
d56410e0 | 304 | 0, 0x80, data, 1, ET61X251_CTRL_TIMEOUT); |
7ce08c93 LR |
305 | if (res < 0) |
306 | err += res; | |
307 | ||
ccad7789 | 308 | err += et61x251_i2c_wait(cam, &cam->sensor); |
7ce08c93 LR |
309 | |
310 | if (err) | |
311 | DBG(3, "I2C raw write failed for %s image sensor", | |
ccad7789 | 312 | cam->sensor.name); |
7ce08c93 LR |
313 | |
314 | PDBGG("I2C raw write: %u bytes, address = 0x%02X, data1 = 0x%02X, " | |
315 | "data2 = 0x%02X, data3 = 0x%02X, data4 = 0x%02X, data5 = 0x%02X," | |
316 | " data6 = 0x%02X, data7 = 0x%02X, data8 = 0x%02X", n, address, | |
317 | data1, data2, data3, data4, data5, data6, data7, data8); | |
318 | ||
319 | return err ? -1 : 0; | |
320 | ||
321 | } | |
322 | ||
323 | ||
7ce08c93 LR |
324 | /*****************************************************************************/ |
325 | ||
7d12e780 | 326 | static void et61x251_urb_complete(struct urb *urb) |
7ce08c93 LR |
327 | { |
328 | struct et61x251_device* cam = urb->context; | |
329 | struct et61x251_frame_t** f; | |
330 | size_t imagesize; | |
331 | u8 i; | |
332 | int err = 0; | |
333 | ||
334 | if (urb->status == -ENOENT) | |
335 | return; | |
336 | ||
337 | f = &cam->frame_current; | |
338 | ||
339 | if (cam->stream == STREAM_INTERRUPT) { | |
340 | cam->stream = STREAM_OFF; | |
341 | if ((*f)) | |
342 | (*f)->state = F_QUEUED; | |
343 | DBG(3, "Stream interrupted"); | |
ccad7789 | 344 | wake_up(&cam->wait_stream); |
7ce08c93 LR |
345 | } |
346 | ||
347 | if (cam->state & DEV_DISCONNECTED) | |
348 | return; | |
349 | ||
350 | if (cam->state & DEV_MISCONFIGURED) { | |
351 | wake_up_interruptible(&cam->wait_frame); | |
352 | return; | |
353 | } | |
354 | ||
355 | if (cam->stream == STREAM_OFF || list_empty(&cam->inqueue)) | |
356 | goto resubmit_urb; | |
357 | ||
358 | if (!(*f)) | |
359 | (*f) = list_entry(cam->inqueue.next, struct et61x251_frame_t, | |
d56410e0 | 360 | frame); |
7ce08c93 | 361 | |
ccad7789 | 362 | imagesize = (cam->sensor.pix_format.width * |
d56410e0 MCC |
363 | cam->sensor.pix_format.height * |
364 | cam->sensor.pix_format.priv) / 8; | |
7ce08c93 LR |
365 | |
366 | for (i = 0; i < urb->number_of_packets; i++) { | |
367 | unsigned int len, status; | |
368 | void *pos; | |
369 | u8* b1, * b2, sof; | |
370 | const u8 VOID_BYTES = 6; | |
371 | size_t imglen; | |
372 | ||
373 | len = urb->iso_frame_desc[i].actual_length; | |
374 | status = urb->iso_frame_desc[i].status; | |
375 | pos = urb->iso_frame_desc[i].offset + urb->transfer_buffer; | |
376 | ||
377 | if (status) { | |
378 | DBG(3, "Error in isochronous frame"); | |
379 | (*f)->state = F_ERROR; | |
380 | continue; | |
381 | } | |
382 | ||
383 | b1 = pos++; | |
384 | b2 = pos++; | |
385 | sof = ((*b1 & 0x3f) == 63); | |
386 | imglen = ((*b1 & 0xc0) << 2) | *b2; | |
387 | ||
388 | PDBGG("Isochrnous frame: length %u, #%u i, image length %zu", | |
389 | len, i, imglen); | |
390 | ||
391 | if ((*f)->state == F_QUEUED || (*f)->state == F_ERROR) | |
392 | start_of_frame: | |
393 | if (sof) { | |
394 | (*f)->state = F_GRABBING; | |
395 | (*f)->buf.bytesused = 0; | |
396 | do_gettimeofday(&(*f)->buf.timestamp); | |
397 | pos += 22; | |
398 | DBG(3, "SOF detected: new video frame"); | |
399 | } | |
400 | ||
401 | if ((*f)->state == F_GRABBING) { | |
402 | if (sof && (*f)->buf.bytesused) { | |
ccad7789 | 403 | if (cam->sensor.pix_format.pixelformat == |
d56410e0 | 404 | V4L2_PIX_FMT_ET61X251) |
7ce08c93 LR |
405 | goto end_of_frame; |
406 | else { | |
407 | DBG(3, "Not expected SOF detected " | |
408 | "after %lu bytes", | |
409 | (unsigned long)(*f)->buf.bytesused); | |
410 | (*f)->state = F_ERROR; | |
411 | continue; | |
412 | } | |
413 | } | |
414 | ||
415 | if ((*f)->buf.bytesused + imglen > imagesize) { | |
416 | DBG(3, "Video frame size exceeded"); | |
417 | (*f)->state = F_ERROR; | |
418 | continue; | |
419 | } | |
420 | ||
421 | pos += VOID_BYTES; | |
422 | ||
423 | memcpy((*f)->bufmem+(*f)->buf.bytesused, pos, imglen); | |
424 | (*f)->buf.bytesused += imglen; | |
425 | ||
426 | if ((*f)->buf.bytesused == imagesize) { | |
427 | u32 b; | |
428 | end_of_frame: | |
429 | b = (*f)->buf.bytesused; | |
430 | (*f)->state = F_DONE; | |
431 | (*f)->buf.sequence= ++cam->frame_count; | |
432 | spin_lock(&cam->queue_lock); | |
433 | list_move_tail(&(*f)->frame, &cam->outqueue); | |
434 | if (!list_empty(&cam->inqueue)) | |
435 | (*f) = list_entry(cam->inqueue.next, | |
d56410e0 MCC |
436 | struct et61x251_frame_t, |
437 | frame); | |
7ce08c93 LR |
438 | else |
439 | (*f) = NULL; | |
440 | spin_unlock(&cam->queue_lock); | |
441 | DBG(3, "Video frame captured: : %lu bytes", | |
442 | (unsigned long)(b)); | |
443 | ||
444 | if (!(*f)) | |
445 | goto resubmit_urb; | |
446 | ||
447 | if (sof && | |
ccad7789 | 448 | cam->sensor.pix_format.pixelformat == |
d56410e0 | 449 | V4L2_PIX_FMT_ET61X251) |
7ce08c93 LR |
450 | goto start_of_frame; |
451 | } | |
452 | } | |
453 | } | |
454 | ||
455 | resubmit_urb: | |
456 | urb->dev = cam->usbdev; | |
457 | err = usb_submit_urb(urb, GFP_ATOMIC); | |
458 | if (err < 0 && err != -EPERM) { | |
459 | cam->state |= DEV_MISCONFIGURED; | |
460 | DBG(1, "usb_submit_urb() failed"); | |
461 | } | |
462 | ||
463 | wake_up_interruptible(&cam->wait_frame); | |
464 | } | |
465 | ||
466 | ||
467 | static int et61x251_start_transfer(struct et61x251_device* cam) | |
468 | { | |
469 | struct usb_device *udev = cam->usbdev; | |
470 | struct urb* urb; | |
26563127 LR |
471 | struct usb_host_interface* altsetting = usb_altnum_to_altsetting( |
472 | usb_ifnum_to_if(udev, 0), | |
473 | ET61X251_ALTERNATE_SETTING); | |
474 | const unsigned int psz = le16_to_cpu(altsetting-> | |
475 | endpoint[0].desc.wMaxPacketSize); | |
7ce08c93 LR |
476 | s8 i, j; |
477 | int err = 0; | |
478 | ||
479 | for (i = 0; i < ET61X251_URBS; i++) { | |
480 | cam->transfer_buffer[i] = kzalloc(ET61X251_ISO_PACKETS * psz, | |
d56410e0 | 481 | GFP_KERNEL); |
7ce08c93 LR |
482 | if (!cam->transfer_buffer[i]) { |
483 | err = -ENOMEM; | |
484 | DBG(1, "Not enough memory"); | |
485 | goto free_buffers; | |
486 | } | |
487 | } | |
488 | ||
489 | for (i = 0; i < ET61X251_URBS; i++) { | |
490 | urb = usb_alloc_urb(ET61X251_ISO_PACKETS, GFP_KERNEL); | |
491 | cam->urb[i] = urb; | |
492 | if (!urb) { | |
493 | err = -ENOMEM; | |
494 | DBG(1, "usb_alloc_urb() failed"); | |
495 | goto free_urbs; | |
496 | } | |
497 | urb->dev = udev; | |
498 | urb->context = cam; | |
499 | urb->pipe = usb_rcvisocpipe(udev, 1); | |
500 | urb->transfer_flags = URB_ISO_ASAP; | |
501 | urb->number_of_packets = ET61X251_ISO_PACKETS; | |
502 | urb->complete = et61x251_urb_complete; | |
503 | urb->transfer_buffer = cam->transfer_buffer[i]; | |
504 | urb->transfer_buffer_length = psz * ET61X251_ISO_PACKETS; | |
505 | urb->interval = 1; | |
506 | for (j = 0; j < ET61X251_ISO_PACKETS; j++) { | |
507 | urb->iso_frame_desc[j].offset = psz * j; | |
508 | urb->iso_frame_desc[j].length = psz; | |
509 | } | |
510 | } | |
511 | ||
512 | err = et61x251_write_reg(cam, 0x01, 0x03); | |
513 | err = et61x251_write_reg(cam, 0x00, 0x03); | |
514 | err = et61x251_write_reg(cam, 0x08, 0x03); | |
515 | if (err) { | |
516 | err = -EIO; | |
517 | DBG(1, "I/O hardware error"); | |
518 | goto free_urbs; | |
519 | } | |
520 | ||
521 | err = usb_set_interface(udev, 0, ET61X251_ALTERNATE_SETTING); | |
522 | if (err) { | |
523 | DBG(1, "usb_set_interface() failed"); | |
524 | goto free_urbs; | |
525 | } | |
526 | ||
527 | cam->frame_current = NULL; | |
528 | ||
529 | for (i = 0; i < ET61X251_URBS; i++) { | |
530 | err = usb_submit_urb(cam->urb[i], GFP_KERNEL); | |
531 | if (err) { | |
532 | for (j = i-1; j >= 0; j--) | |
533 | usb_kill_urb(cam->urb[j]); | |
534 | DBG(1, "usb_submit_urb() failed, error %d", err); | |
535 | goto free_urbs; | |
536 | } | |
537 | } | |
538 | ||
539 | return 0; | |
540 | ||
541 | free_urbs: | |
3b2ae0be | 542 | for (i = 0; (i < ET61X251_URBS) && cam->urb[i]; i++) |
7ce08c93 LR |
543 | usb_free_urb(cam->urb[i]); |
544 | ||
545 | free_buffers: | |
546 | for (i = 0; (i < ET61X251_URBS) && cam->transfer_buffer[i]; i++) | |
547 | kfree(cam->transfer_buffer[i]); | |
548 | ||
549 | return err; | |
550 | } | |
551 | ||
552 | ||
553 | static int et61x251_stop_transfer(struct et61x251_device* cam) | |
554 | { | |
555 | struct usb_device *udev = cam->usbdev; | |
556 | s8 i; | |
557 | int err = 0; | |
558 | ||
559 | if (cam->state & DEV_DISCONNECTED) | |
560 | return 0; | |
561 | ||
562 | for (i = ET61X251_URBS-1; i >= 0; i--) { | |
563 | usb_kill_urb(cam->urb[i]); | |
564 | usb_free_urb(cam->urb[i]); | |
565 | kfree(cam->transfer_buffer[i]); | |
566 | } | |
567 | ||
568 | err = usb_set_interface(udev, 0, 0); /* 0 Mb/s */ | |
569 | if (err) | |
570 | DBG(3, "usb_set_interface() failed"); | |
571 | ||
572 | return err; | |
573 | } | |
574 | ||
575 | ||
576 | static int et61x251_stream_interrupt(struct et61x251_device* cam) | |
577 | { | |
ccad7789 | 578 | long timeout; |
7ce08c93 LR |
579 | |
580 | cam->stream = STREAM_INTERRUPT; | |
ccad7789 | 581 | timeout = wait_event_timeout(cam->wait_stream, |
d56410e0 MCC |
582 | (cam->stream == STREAM_OFF) || |
583 | (cam->state & DEV_DISCONNECTED), | |
584 | ET61X251_URB_TIMEOUT); | |
7ce08c93 LR |
585 | if (cam->state & DEV_DISCONNECTED) |
586 | return -ENODEV; | |
ccad7789 | 587 | else if (cam->stream != STREAM_OFF) { |
7ce08c93 LR |
588 | cam->state |= DEV_MISCONFIGURED; |
589 | DBG(1, "URB timeout reached. The camera is misconfigured. To " | |
590 | "use it, close and open /dev/video%d again.", | |
c6330fb8 | 591 | cam->v4ldev->num); |
ccad7789 | 592 | return -EIO; |
7ce08c93 LR |
593 | } |
594 | ||
595 | return 0; | |
596 | } | |
597 | ||
598 | /*****************************************************************************/ | |
599 | ||
600 | #ifdef CONFIG_VIDEO_ADV_DEBUG | |
7cd355e7 AM |
601 | |
602 | static int et61x251_i2c_try_read(struct et61x251_device* cam, | |
603 | const struct et61x251_sensor* sensor, | |
604 | u8 address) | |
605 | { | |
606 | struct usb_device* udev = cam->usbdev; | |
607 | u8* data = cam->control_buffer; | |
608 | int err = 0, res; | |
609 | ||
610 | data[0] = address; | |
611 | data[1] = cam->sensor.i2c_slave_id; | |
612 | data[2] = cam->sensor.rsta | 0x10; | |
613 | data[3] = !(et61x251_read_reg(cam, 0x8b) & 0x02); | |
614 | res = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x00, 0x41, | |
615 | 0, 0x88, data, 4, ET61X251_CTRL_TIMEOUT); | |
616 | if (res < 0) | |
617 | err += res; | |
618 | ||
619 | err += et61x251_i2c_wait(cam, sensor); | |
620 | ||
621 | res = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x00, 0xc1, | |
622 | 0, 0x80, data, 8, ET61X251_CTRL_TIMEOUT); | |
623 | if (res < 0) | |
624 | err += res; | |
625 | ||
626 | if (err) | |
627 | DBG(3, "I2C read failed for %s image sensor", sensor->name); | |
628 | ||
629 | PDBGG("I2C read: address 0x%02X, value: 0x%02X", address, data[0]); | |
630 | ||
631 | return err ? -1 : (int)data[0]; | |
632 | } | |
633 | ||
634 | ||
635 | static int et61x251_i2c_try_write(struct et61x251_device* cam, | |
636 | const struct et61x251_sensor* sensor, | |
637 | u8 address, u8 value) | |
638 | { | |
639 | struct usb_device* udev = cam->usbdev; | |
640 | u8* data = cam->control_buffer; | |
641 | int err = 0, res; | |
642 | ||
643 | data[0] = address; | |
644 | data[1] = cam->sensor.i2c_slave_id; | |
645 | data[2] = cam->sensor.rsta | 0x12; | |
646 | res = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x00, 0x41, | |
647 | 0, 0x88, data, 3, ET61X251_CTRL_TIMEOUT); | |
648 | if (res < 0) | |
649 | err += res; | |
650 | ||
651 | data[0] = value; | |
652 | res = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x00, 0x41, | |
653 | 0, 0x80, data, 1, ET61X251_CTRL_TIMEOUT); | |
654 | if (res < 0) | |
655 | err += res; | |
656 | ||
657 | err += et61x251_i2c_wait(cam, sensor); | |
658 | ||
659 | if (err) | |
660 | DBG(3, "I2C write failed for %s image sensor", sensor->name); | |
661 | ||
662 | PDBGG("I2C write: address 0x%02X, value: 0x%02X", address, value); | |
663 | ||
664 | return err ? -1 : 0; | |
665 | } | |
666 | ||
667 | static int et61x251_i2c_read(struct et61x251_device* cam, u8 address) | |
668 | { | |
669 | return et61x251_i2c_try_read(cam, &cam->sensor, address); | |
670 | } | |
671 | ||
672 | static int et61x251_i2c_write(struct et61x251_device* cam, | |
673 | u8 address, u8 value) | |
674 | { | |
675 | return et61x251_i2c_try_write(cam, &cam->sensor, address, value); | |
676 | } | |
677 | ||
7ce08c93 LR |
678 | static u8 et61x251_strtou8(const char* buff, size_t len, ssize_t* count) |
679 | { | |
680 | char str[5]; | |
681 | char* endp; | |
682 | unsigned long val; | |
683 | ||
684 | if (len < 4) { | |
685 | strncpy(str, buff, len); | |
3b2ae0be | 686 | str[len] = '\0'; |
7ce08c93 LR |
687 | } else { |
688 | strncpy(str, buff, 4); | |
689 | str[4] = '\0'; | |
690 | } | |
691 | ||
692 | val = simple_strtoul(str, &endp, 0); | |
693 | ||
694 | *count = 0; | |
695 | if (val <= 0xff) | |
696 | *count = (ssize_t)(endp - str); | |
697 | if ((*count) && (len == *count+1) && (buff[*count] == '\n')) | |
698 | *count += 1; | |
699 | ||
700 | return (u8)val; | |
701 | } | |
702 | ||
703 | /* | |
704 | NOTE 1: being inside one of the following methods implies that the v4l | |
d56410e0 | 705 | device exists for sure (see kobjects and reference counters) |
7ce08c93 LR |
706 | NOTE 2: buffers are PAGE_SIZE long |
707 | */ | |
708 | ||
54bd5b66 KS |
709 | static ssize_t et61x251_show_reg(struct device* cd, |
710 | struct device_attribute *attr, char* buf) | |
7ce08c93 LR |
711 | { |
712 | struct et61x251_device* cam; | |
713 | ssize_t count; | |
714 | ||
ccad7789 | 715 | if (mutex_lock_interruptible(&et61x251_sysfs_lock)) |
7ce08c93 LR |
716 | return -ERESTARTSYS; |
717 | ||
718 | cam = video_get_drvdata(to_video_device(cd)); | |
719 | if (!cam) { | |
ccad7789 | 720 | mutex_unlock(&et61x251_sysfs_lock); |
7ce08c93 LR |
721 | return -ENODEV; |
722 | } | |
723 | ||
724 | count = sprintf(buf, "%u\n", cam->sysfs.reg); | |
725 | ||
ccad7789 | 726 | mutex_unlock(&et61x251_sysfs_lock); |
7ce08c93 LR |
727 | |
728 | return count; | |
729 | } | |
730 | ||
731 | ||
732 | static ssize_t | |
54bd5b66 KS |
733 | et61x251_store_reg(struct device* cd, |
734 | struct device_attribute *attr, const char* buf, size_t len) | |
7ce08c93 LR |
735 | { |
736 | struct et61x251_device* cam; | |
737 | u8 index; | |
738 | ssize_t count; | |
739 | ||
ccad7789 | 740 | if (mutex_lock_interruptible(&et61x251_sysfs_lock)) |
7ce08c93 LR |
741 | return -ERESTARTSYS; |
742 | ||
743 | cam = video_get_drvdata(to_video_device(cd)); | |
744 | if (!cam) { | |
ccad7789 | 745 | mutex_unlock(&et61x251_sysfs_lock); |
7ce08c93 LR |
746 | return -ENODEV; |
747 | } | |
748 | ||
749 | index = et61x251_strtou8(buf, len, &count); | |
750 | if (index > 0x8e || !count) { | |
ccad7789 | 751 | mutex_unlock(&et61x251_sysfs_lock); |
7ce08c93 LR |
752 | return -EINVAL; |
753 | } | |
754 | ||
755 | cam->sysfs.reg = index; | |
756 | ||
757 | DBG(2, "Moved ET61X[12]51 register index to 0x%02X", cam->sysfs.reg); | |
758 | DBG(3, "Written bytes: %zd", count); | |
759 | ||
ccad7789 | 760 | mutex_unlock(&et61x251_sysfs_lock); |
7ce08c93 LR |
761 | |
762 | return count; | |
763 | } | |
764 | ||
765 | ||
54bd5b66 KS |
766 | static ssize_t et61x251_show_val(struct device* cd, |
767 | struct device_attribute *attr, char* buf) | |
7ce08c93 LR |
768 | { |
769 | struct et61x251_device* cam; | |
770 | ssize_t count; | |
771 | int val; | |
772 | ||
ccad7789 | 773 | if (mutex_lock_interruptible(&et61x251_sysfs_lock)) |
7ce08c93 LR |
774 | return -ERESTARTSYS; |
775 | ||
776 | cam = video_get_drvdata(to_video_device(cd)); | |
777 | if (!cam) { | |
ccad7789 | 778 | mutex_unlock(&et61x251_sysfs_lock); |
7ce08c93 LR |
779 | return -ENODEV; |
780 | } | |
781 | ||
782 | if ((val = et61x251_read_reg(cam, cam->sysfs.reg)) < 0) { | |
ccad7789 | 783 | mutex_unlock(&et61x251_sysfs_lock); |
7ce08c93 LR |
784 | return -EIO; |
785 | } | |
786 | ||
787 | count = sprintf(buf, "%d\n", val); | |
788 | ||
789 | DBG(3, "Read bytes: %zd", count); | |
790 | ||
ccad7789 | 791 | mutex_unlock(&et61x251_sysfs_lock); |
7ce08c93 LR |
792 | |
793 | return count; | |
794 | } | |
795 | ||
796 | ||
797 | static ssize_t | |
54bd5b66 KS |
798 | et61x251_store_val(struct device* cd, struct device_attribute *attr, |
799 | const char* buf, size_t len) | |
7ce08c93 LR |
800 | { |
801 | struct et61x251_device* cam; | |
802 | u8 value; | |
803 | ssize_t count; | |
804 | int err; | |
805 | ||
ccad7789 | 806 | if (mutex_lock_interruptible(&et61x251_sysfs_lock)) |
7ce08c93 LR |
807 | return -ERESTARTSYS; |
808 | ||
809 | cam = video_get_drvdata(to_video_device(cd)); | |
810 | if (!cam) { | |
ccad7789 | 811 | mutex_unlock(&et61x251_sysfs_lock); |
7ce08c93 LR |
812 | return -ENODEV; |
813 | } | |
814 | ||
815 | value = et61x251_strtou8(buf, len, &count); | |
816 | if (!count) { | |
ccad7789 | 817 | mutex_unlock(&et61x251_sysfs_lock); |
7ce08c93 LR |
818 | return -EINVAL; |
819 | } | |
820 | ||
821 | err = et61x251_write_reg(cam, value, cam->sysfs.reg); | |
822 | if (err) { | |
ccad7789 | 823 | mutex_unlock(&et61x251_sysfs_lock); |
7ce08c93 LR |
824 | return -EIO; |
825 | } | |
826 | ||
827 | DBG(2, "Written ET61X[12]51 reg. 0x%02X, val. 0x%02X", | |
828 | cam->sysfs.reg, value); | |
829 | DBG(3, "Written bytes: %zd", count); | |
830 | ||
ccad7789 | 831 | mutex_unlock(&et61x251_sysfs_lock); |
7ce08c93 LR |
832 | |
833 | return count; | |
834 | } | |
835 | ||
836 | ||
54bd5b66 KS |
837 | static ssize_t et61x251_show_i2c_reg(struct device* cd, |
838 | struct device_attribute *attr, char* buf) | |
7ce08c93 LR |
839 | { |
840 | struct et61x251_device* cam; | |
841 | ssize_t count; | |
842 | ||
ccad7789 | 843 | if (mutex_lock_interruptible(&et61x251_sysfs_lock)) |
7ce08c93 LR |
844 | return -ERESTARTSYS; |
845 | ||
846 | cam = video_get_drvdata(to_video_device(cd)); | |
847 | if (!cam) { | |
ccad7789 | 848 | mutex_unlock(&et61x251_sysfs_lock); |
7ce08c93 LR |
849 | return -ENODEV; |
850 | } | |
851 | ||
852 | count = sprintf(buf, "%u\n", cam->sysfs.i2c_reg); | |
853 | ||
854 | DBG(3, "Read bytes: %zd", count); | |
855 | ||
ccad7789 | 856 | mutex_unlock(&et61x251_sysfs_lock); |
7ce08c93 LR |
857 | |
858 | return count; | |
859 | } | |
860 | ||
861 | ||
862 | static ssize_t | |
54bd5b66 KS |
863 | et61x251_store_i2c_reg(struct device* cd, struct device_attribute *attr, |
864 | const char* buf, size_t len) | |
7ce08c93 LR |
865 | { |
866 | struct et61x251_device* cam; | |
867 | u8 index; | |
868 | ssize_t count; | |
869 | ||
ccad7789 | 870 | if (mutex_lock_interruptible(&et61x251_sysfs_lock)) |
7ce08c93 LR |
871 | return -ERESTARTSYS; |
872 | ||
873 | cam = video_get_drvdata(to_video_device(cd)); | |
874 | if (!cam) { | |
ccad7789 | 875 | mutex_unlock(&et61x251_sysfs_lock); |
7ce08c93 LR |
876 | return -ENODEV; |
877 | } | |
878 | ||
879 | index = et61x251_strtou8(buf, len, &count); | |
880 | if (!count) { | |
ccad7789 | 881 | mutex_unlock(&et61x251_sysfs_lock); |
7ce08c93 LR |
882 | return -EINVAL; |
883 | } | |
884 | ||
885 | cam->sysfs.i2c_reg = index; | |
886 | ||
887 | DBG(2, "Moved sensor register index to 0x%02X", cam->sysfs.i2c_reg); | |
888 | DBG(3, "Written bytes: %zd", count); | |
889 | ||
ccad7789 | 890 | mutex_unlock(&et61x251_sysfs_lock); |
7ce08c93 LR |
891 | |
892 | return count; | |
893 | } | |
894 | ||
895 | ||
54bd5b66 KS |
896 | static ssize_t et61x251_show_i2c_val(struct device* cd, |
897 | struct device_attribute *attr, char* buf) | |
7ce08c93 LR |
898 | { |
899 | struct et61x251_device* cam; | |
900 | ssize_t count; | |
901 | int val; | |
902 | ||
ccad7789 | 903 | if (mutex_lock_interruptible(&et61x251_sysfs_lock)) |
7ce08c93 LR |
904 | return -ERESTARTSYS; |
905 | ||
906 | cam = video_get_drvdata(to_video_device(cd)); | |
907 | if (!cam) { | |
ccad7789 | 908 | mutex_unlock(&et61x251_sysfs_lock); |
7ce08c93 LR |
909 | return -ENODEV; |
910 | } | |
911 | ||
ccad7789 LR |
912 | if (!(cam->sensor.sysfs_ops & ET61X251_I2C_READ)) { |
913 | mutex_unlock(&et61x251_sysfs_lock); | |
7ce08c93 LR |
914 | return -ENOSYS; |
915 | } | |
916 | ||
917 | if ((val = et61x251_i2c_read(cam, cam->sysfs.i2c_reg)) < 0) { | |
ccad7789 | 918 | mutex_unlock(&et61x251_sysfs_lock); |
7ce08c93 LR |
919 | return -EIO; |
920 | } | |
921 | ||
922 | count = sprintf(buf, "%d\n", val); | |
923 | ||
924 | DBG(3, "Read bytes: %zd", count); | |
925 | ||
ccad7789 | 926 | mutex_unlock(&et61x251_sysfs_lock); |
7ce08c93 LR |
927 | |
928 | return count; | |
929 | } | |
930 | ||
931 | ||
932 | static ssize_t | |
54bd5b66 KS |
933 | et61x251_store_i2c_val(struct device* cd, struct device_attribute *attr, |
934 | const char* buf, size_t len) | |
7ce08c93 LR |
935 | { |
936 | struct et61x251_device* cam; | |
937 | u8 value; | |
938 | ssize_t count; | |
939 | int err; | |
940 | ||
ccad7789 | 941 | if (mutex_lock_interruptible(&et61x251_sysfs_lock)) |
7ce08c93 LR |
942 | return -ERESTARTSYS; |
943 | ||
944 | cam = video_get_drvdata(to_video_device(cd)); | |
945 | if (!cam) { | |
ccad7789 | 946 | mutex_unlock(&et61x251_sysfs_lock); |
7ce08c93 LR |
947 | return -ENODEV; |
948 | } | |
949 | ||
ccad7789 LR |
950 | if (!(cam->sensor.sysfs_ops & ET61X251_I2C_READ)) { |
951 | mutex_unlock(&et61x251_sysfs_lock); | |
7ce08c93 LR |
952 | return -ENOSYS; |
953 | } | |
954 | ||
955 | value = et61x251_strtou8(buf, len, &count); | |
956 | if (!count) { | |
ccad7789 | 957 | mutex_unlock(&et61x251_sysfs_lock); |
7ce08c93 LR |
958 | return -EINVAL; |
959 | } | |
960 | ||
961 | err = et61x251_i2c_write(cam, cam->sysfs.i2c_reg, value); | |
962 | if (err) { | |
ccad7789 | 963 | mutex_unlock(&et61x251_sysfs_lock); |
7ce08c93 LR |
964 | return -EIO; |
965 | } | |
966 | ||
967 | DBG(2, "Written sensor reg. 0x%02X, val. 0x%02X", | |
968 | cam->sysfs.i2c_reg, value); | |
969 | DBG(3, "Written bytes: %zd", count); | |
970 | ||
ccad7789 | 971 | mutex_unlock(&et61x251_sysfs_lock); |
7ce08c93 LR |
972 | |
973 | return count; | |
974 | } | |
975 | ||
976 | ||
54bd5b66 KS |
977 | static DEVICE_ATTR(reg, S_IRUGO | S_IWUSR, |
978 | et61x251_show_reg, et61x251_store_reg); | |
979 | static DEVICE_ATTR(val, S_IRUGO | S_IWUSR, | |
980 | et61x251_show_val, et61x251_store_val); | |
981 | static DEVICE_ATTR(i2c_reg, S_IRUGO | S_IWUSR, | |
982 | et61x251_show_i2c_reg, et61x251_store_i2c_reg); | |
983 | static DEVICE_ATTR(i2c_val, S_IRUGO | S_IWUSR, | |
984 | et61x251_show_i2c_val, et61x251_store_i2c_val); | |
7ce08c93 LR |
985 | |
986 | ||
c12e3be0 | 987 | static int et61x251_create_sysfs(struct et61x251_device* cam) |
7ce08c93 | 988 | { |
22a04f10 | 989 | struct device *classdev = &(cam->v4ldev->dev); |
26563127 LR |
990 | int err = 0; |
991 | ||
54bd5b66 | 992 | if ((err = device_create_file(classdev, &dev_attr_reg))) |
26563127 | 993 | goto err_out; |
54bd5b66 | 994 | if ((err = device_create_file(classdev, &dev_attr_val))) |
26563127 | 995 | goto err_reg; |
7ce08c93 | 996 | |
ccad7789 | 997 | if (cam->sensor.sysfs_ops) { |
54bd5b66 | 998 | if ((err = device_create_file(classdev, &dev_attr_i2c_reg))) |
26563127 | 999 | goto err_val; |
54bd5b66 | 1000 | if ((err = device_create_file(classdev, &dev_attr_i2c_val))) |
26563127 | 1001 | goto err_i2c_reg; |
7ce08c93 | 1002 | } |
c12e3be0 | 1003 | |
c12e3be0 | 1004 | err_i2c_reg: |
26563127 | 1005 | if (cam->sensor.sysfs_ops) |
54bd5b66 | 1006 | device_remove_file(classdev, &dev_attr_i2c_reg); |
c12e3be0 | 1007 | err_val: |
54bd5b66 | 1008 | device_remove_file(classdev, &dev_attr_val); |
c12e3be0 | 1009 | err_reg: |
54bd5b66 | 1010 | device_remove_file(classdev, &dev_attr_reg); |
26563127 LR |
1011 | err_out: |
1012 | return err; | |
7ce08c93 LR |
1013 | } |
1014 | #endif /* CONFIG_VIDEO_ADV_DEBUG */ | |
1015 | ||
1016 | /*****************************************************************************/ | |
1017 | ||
1018 | static int | |
1019 | et61x251_set_pix_format(struct et61x251_device* cam, | |
d56410e0 | 1020 | struct v4l2_pix_format* pix) |
7ce08c93 LR |
1021 | { |
1022 | int r, err = 0; | |
1023 | ||
1024 | if ((r = et61x251_read_reg(cam, 0x12)) < 0) | |
1025 | err += r; | |
1026 | if (pix->pixelformat == V4L2_PIX_FMT_ET61X251) | |
1027 | err += et61x251_write_reg(cam, r & 0xfd, 0x12); | |
1028 | else | |
1029 | err += et61x251_write_reg(cam, r | 0x02, 0x12); | |
1030 | ||
1031 | return err ? -EIO : 0; | |
1032 | } | |
1033 | ||
1034 | ||
1035 | static int | |
1036 | et61x251_set_compression(struct et61x251_device* cam, | |
d56410e0 | 1037 | struct v4l2_jpegcompression* compression) |
7ce08c93 LR |
1038 | { |
1039 | int r, err = 0; | |
1040 | ||
1041 | if ((r = et61x251_read_reg(cam, 0x12)) < 0) | |
1042 | err += r; | |
1043 | if (compression->quality == 0) | |
1044 | err += et61x251_write_reg(cam, r & 0xfb, 0x12); | |
1045 | else | |
1046 | err += et61x251_write_reg(cam, r | 0x04, 0x12); | |
1047 | ||
1048 | return err ? -EIO : 0; | |
1049 | } | |
1050 | ||
1051 | ||
1052 | static int et61x251_set_scale(struct et61x251_device* cam, u8 scale) | |
1053 | { | |
1054 | int r = 0, err = 0; | |
1055 | ||
1056 | r = et61x251_read_reg(cam, 0x12); | |
1057 | if (r < 0) | |
1058 | err += r; | |
1059 | ||
1060 | if (scale == 1) | |
1061 | err += et61x251_write_reg(cam, r & ~0x01, 0x12); | |
1062 | else if (scale == 2) | |
1063 | err += et61x251_write_reg(cam, r | 0x01, 0x12); | |
1064 | ||
1065 | if (err) | |
1066 | return -EIO; | |
1067 | ||
1068 | PDBGG("Scaling factor: %u", scale); | |
1069 | ||
1070 | return 0; | |
1071 | } | |
1072 | ||
1073 | ||
1074 | static int | |
1075 | et61x251_set_crop(struct et61x251_device* cam, struct v4l2_rect* rect) | |
1076 | { | |
ccad7789 | 1077 | struct et61x251_sensor* s = &cam->sensor; |
7ce08c93 | 1078 | u16 fmw_sx = (u16)(rect->left - s->cropcap.bounds.left + |
d56410e0 | 1079 | s->active_pixel.left), |
7ce08c93 | 1080 | fmw_sy = (u16)(rect->top - s->cropcap.bounds.top + |
d56410e0 | 1081 | s->active_pixel.top), |
7ce08c93 LR |
1082 | fmw_length = (u16)(rect->width), |
1083 | fmw_height = (u16)(rect->height); | |
1084 | int err = 0; | |
1085 | ||
1086 | err += et61x251_write_reg(cam, fmw_sx & 0xff, 0x69); | |
1087 | err += et61x251_write_reg(cam, fmw_sy & 0xff, 0x6a); | |
1088 | err += et61x251_write_reg(cam, fmw_length & 0xff, 0x6b); | |
1089 | err += et61x251_write_reg(cam, fmw_height & 0xff, 0x6c); | |
1090 | err += et61x251_write_reg(cam, (fmw_sx >> 8) | ((fmw_sy & 0x300) >> 6) | |
d56410e0 MCC |
1091 | | ((fmw_length & 0x300) >> 4) |
1092 | | ((fmw_height & 0x300) >> 2), 0x6d); | |
7ce08c93 LR |
1093 | if (err) |
1094 | return -EIO; | |
1095 | ||
1096 | PDBGG("fmw_sx, fmw_sy, fmw_length, fmw_height: %u %u %u %u", | |
1097 | fmw_sx, fmw_sy, fmw_length, fmw_height); | |
1098 | ||
1099 | return 0; | |
1100 | } | |
1101 | ||
1102 | ||
1103 | static int et61x251_init(struct et61x251_device* cam) | |
1104 | { | |
ccad7789 | 1105 | struct et61x251_sensor* s = &cam->sensor; |
7ce08c93 LR |
1106 | struct v4l2_control ctrl; |
1107 | struct v4l2_queryctrl *qctrl; | |
1108 | struct v4l2_rect* rect; | |
1109 | u8 i = 0; | |
1110 | int err = 0; | |
1111 | ||
1112 | if (!(cam->state & DEV_INITIALIZED)) { | |
3b2ae0be LR |
1113 | mutex_init(&cam->open_mutex); |
1114 | init_waitqueue_head(&cam->wait_open); | |
7ce08c93 LR |
1115 | qctrl = s->qctrl; |
1116 | rect = &(s->cropcap.defrect); | |
1117 | cam->compression.quality = ET61X251_COMPRESSION_QUALITY; | |
1118 | } else { /* use current values */ | |
1119 | qctrl = s->_qctrl; | |
1120 | rect = &(s->_rect); | |
1121 | } | |
1122 | ||
1123 | err += et61x251_set_scale(cam, rect->width / s->pix_format.width); | |
1124 | err += et61x251_set_crop(cam, rect); | |
1125 | if (err) | |
1126 | return err; | |
1127 | ||
1128 | if (s->init) { | |
1129 | err = s->init(cam); | |
1130 | if (err) { | |
1131 | DBG(3, "Sensor initialization failed"); | |
1132 | return err; | |
1133 | } | |
1134 | } | |
1135 | ||
1136 | err += et61x251_set_compression(cam, &cam->compression); | |
1137 | err += et61x251_set_pix_format(cam, &s->pix_format); | |
1138 | if (s->set_pix_format) | |
1139 | err += s->set_pix_format(cam, &s->pix_format); | |
1140 | if (err) | |
1141 | return err; | |
1142 | ||
1143 | if (s->pix_format.pixelformat == V4L2_PIX_FMT_ET61X251) | |
1144 | DBG(3, "Compressed video format is active, quality %d", | |
1145 | cam->compression.quality); | |
1146 | else | |
1147 | DBG(3, "Uncompressed video format is active"); | |
1148 | ||
1149 | if (s->set_crop) | |
1150 | if ((err = s->set_crop(cam, rect))) { | |
1151 | DBG(3, "set_crop() failed"); | |
1152 | return err; | |
1153 | } | |
1154 | ||
1155 | if (s->set_ctrl) { | |
1156 | for (i = 0; i < ARRAY_SIZE(s->qctrl); i++) | |
1157 | if (s->qctrl[i].id != 0 && | |
1158 | !(s->qctrl[i].flags & V4L2_CTRL_FLAG_DISABLED)) { | |
1159 | ctrl.id = s->qctrl[i].id; | |
1160 | ctrl.value = qctrl[i].default_value; | |
1161 | err = s->set_ctrl(cam, &ctrl); | |
1162 | if (err) { | |
1163 | DBG(3, "Set %s control failed", | |
1164 | s->qctrl[i].name); | |
1165 | return err; | |
1166 | } | |
1167 | DBG(3, "Image sensor supports '%s' control", | |
1168 | s->qctrl[i].name); | |
1169 | } | |
1170 | } | |
1171 | ||
1172 | if (!(cam->state & DEV_INITIALIZED)) { | |
ccad7789 | 1173 | mutex_init(&cam->fileop_mutex); |
7ce08c93 LR |
1174 | spin_lock_init(&cam->queue_lock); |
1175 | init_waitqueue_head(&cam->wait_frame); | |
1176 | init_waitqueue_head(&cam->wait_stream); | |
1177 | cam->nreadbuffers = 2; | |
1178 | memcpy(s->_qctrl, s->qctrl, sizeof(s->qctrl)); | |
1179 | memcpy(&(s->_rect), &(s->cropcap.defrect), | |
1180 | sizeof(struct v4l2_rect)); | |
1181 | cam->state |= DEV_INITIALIZED; | |
1182 | } | |
1183 | ||
1184 | DBG(2, "Initialization succeeded"); | |
1185 | return 0; | |
1186 | } | |
1187 | ||
3b2ae0be | 1188 | /*****************************************************************************/ |
7ce08c93 | 1189 | |
3b2ae0be | 1190 | static void et61x251_release_resources(struct kref *kref) |
7ce08c93 | 1191 | { |
3b2ae0be LR |
1192 | struct et61x251_device *cam; |
1193 | ||
ccad7789 | 1194 | mutex_lock(&et61x251_sysfs_lock); |
7ce08c93 | 1195 | |
3b2ae0be LR |
1196 | cam = container_of(kref, struct et61x251_device, kref); |
1197 | ||
c6330fb8 | 1198 | DBG(2, "V4L2 device /dev/video%d deregistered", cam->v4ldev->num); |
7ce08c93 LR |
1199 | video_set_drvdata(cam->v4ldev, NULL); |
1200 | video_unregister_device(cam->v4ldev); | |
3b2ae0be LR |
1201 | usb_put_dev(cam->usbdev); |
1202 | kfree(cam->control_buffer); | |
1203 | kfree(cam); | |
7ce08c93 | 1204 | |
ccad7789 | 1205 | mutex_unlock(&et61x251_sysfs_lock); |
7ce08c93 LR |
1206 | } |
1207 | ||
7ce08c93 | 1208 | |
bec43661 | 1209 | static int et61x251_open(struct file *filp) |
7ce08c93 LR |
1210 | { |
1211 | struct et61x251_device* cam; | |
1212 | int err = 0; | |
1213 | ||
3b2ae0be | 1214 | if (!down_read_trylock(&et61x251_dev_lock)) |
7ce08c93 LR |
1215 | return -ERESTARTSYS; |
1216 | ||
c170ecf4 | 1217 | cam = video_drvdata(filp); |
7ce08c93 | 1218 | |
3b2ae0be LR |
1219 | if (wait_for_completion_interruptible(&cam->probe)) { |
1220 | up_read(&et61x251_dev_lock); | |
7ce08c93 LR |
1221 | return -ERESTARTSYS; |
1222 | } | |
1223 | ||
3b2ae0be LR |
1224 | kref_get(&cam->kref); |
1225 | ||
1226 | if (mutex_lock_interruptible(&cam->open_mutex)) { | |
1227 | kref_put(&cam->kref, et61x251_release_resources); | |
1228 | up_read(&et61x251_dev_lock); | |
1229 | return -ERESTARTSYS; | |
1230 | } | |
1231 | ||
1232 | if (cam->state & DEV_DISCONNECTED) { | |
1233 | DBG(1, "Device not present"); | |
1234 | err = -ENODEV; | |
1235 | goto out; | |
1236 | } | |
1237 | ||
7ce08c93 | 1238 | if (cam->users) { |
3b2ae0be | 1239 | DBG(2, "Device /dev/video%d is already in use", |
c6330fb8 | 1240 | cam->v4ldev->num); |
3b2ae0be | 1241 | DBG(3, "Simultaneous opens are not supported"); |
7ce08c93 LR |
1242 | if ((filp->f_flags & O_NONBLOCK) || |
1243 | (filp->f_flags & O_NDELAY)) { | |
1244 | err = -EWOULDBLOCK; | |
1245 | goto out; | |
1246 | } | |
3b2ae0be LR |
1247 | DBG(2, "A blocking open() has been requested. Wait for the " |
1248 | "device to be released..."); | |
1249 | up_read(&et61x251_dev_lock); | |
1250 | err = wait_event_interruptible_exclusive(cam->wait_open, | |
1251 | (cam->state & DEV_DISCONNECTED) | |
d56410e0 | 1252 | || !cam->users); |
3b2ae0be LR |
1253 | down_read(&et61x251_dev_lock); |
1254 | if (err) | |
1255 | goto out; | |
7ce08c93 | 1256 | if (cam->state & DEV_DISCONNECTED) { |
3b2ae0be LR |
1257 | err = -ENODEV; |
1258 | goto out; | |
7ce08c93 | 1259 | } |
7ce08c93 LR |
1260 | } |
1261 | ||
7ce08c93 LR |
1262 | if (cam->state & DEV_MISCONFIGURED) { |
1263 | err = et61x251_init(cam); | |
1264 | if (err) { | |
1265 | DBG(1, "Initialization failed again. " | |
1266 | "I will retry on next open()."); | |
1267 | goto out; | |
1268 | } | |
1269 | cam->state &= ~DEV_MISCONFIGURED; | |
1270 | } | |
1271 | ||
1272 | if ((err = et61x251_start_transfer(cam))) | |
1273 | goto out; | |
1274 | ||
1275 | filp->private_data = cam; | |
1276 | cam->users++; | |
1277 | cam->io = IO_NONE; | |
1278 | cam->stream = STREAM_OFF; | |
1279 | cam->nbuffers = 0; | |
1280 | cam->frame_count = 0; | |
1281 | et61x251_empty_framequeues(cam); | |
1282 | ||
c6330fb8 | 1283 | DBG(3, "Video device /dev/video%d is open", cam->v4ldev->num); |
7ce08c93 LR |
1284 | |
1285 | out: | |
3b2ae0be LR |
1286 | mutex_unlock(&cam->open_mutex); |
1287 | if (err) | |
1288 | kref_put(&cam->kref, et61x251_release_resources); | |
1289 | up_read(&et61x251_dev_lock); | |
7ce08c93 LR |
1290 | return err; |
1291 | } | |
1292 | ||
1293 | ||
bec43661 | 1294 | static int et61x251_release(struct file *filp) |
7ce08c93 | 1295 | { |
3b2ae0be | 1296 | struct et61x251_device* cam; |
7ce08c93 | 1297 | |
3b2ae0be | 1298 | down_write(&et61x251_dev_lock); |
7ce08c93 | 1299 | |
c170ecf4 | 1300 | cam = video_drvdata(filp); |
7ce08c93 | 1301 | |
3b2ae0be | 1302 | et61x251_stop_transfer(cam); |
7ce08c93 | 1303 | et61x251_release_buffers(cam); |
7ce08c93 | 1304 | cam->users--; |
3b2ae0be | 1305 | wake_up_interruptible_nr(&cam->wait_open, 1); |
7ce08c93 | 1306 | |
c6330fb8 | 1307 | DBG(3, "Video device /dev/video%d closed", cam->v4ldev->num); |
7ce08c93 | 1308 | |
3b2ae0be LR |
1309 | kref_put(&cam->kref, et61x251_release_resources); |
1310 | ||
1311 | up_write(&et61x251_dev_lock); | |
7ce08c93 LR |
1312 | |
1313 | return 0; | |
1314 | } | |
1315 | ||
1316 | ||
1317 | static ssize_t | |
1318 | et61x251_read(struct file* filp, char __user * buf, | |
d56410e0 | 1319 | size_t count, loff_t* f_pos) |
7ce08c93 | 1320 | { |
c170ecf4 | 1321 | struct et61x251_device *cam = video_drvdata(filp); |
7ce08c93 LR |
1322 | struct et61x251_frame_t* f, * i; |
1323 | unsigned long lock_flags; | |
ccad7789 | 1324 | long timeout; |
7ce08c93 LR |
1325 | int err = 0; |
1326 | ||
ccad7789 | 1327 | if (mutex_lock_interruptible(&cam->fileop_mutex)) |
7ce08c93 LR |
1328 | return -ERESTARTSYS; |
1329 | ||
1330 | if (cam->state & DEV_DISCONNECTED) { | |
1331 | DBG(1, "Device not present"); | |
ccad7789 | 1332 | mutex_unlock(&cam->fileop_mutex); |
7ce08c93 LR |
1333 | return -ENODEV; |
1334 | } | |
1335 | ||
1336 | if (cam->state & DEV_MISCONFIGURED) { | |
1337 | DBG(1, "The camera is misconfigured. Close and open it " | |
1338 | "again."); | |
ccad7789 | 1339 | mutex_unlock(&cam->fileop_mutex); |
7ce08c93 LR |
1340 | return -EIO; |
1341 | } | |
1342 | ||
1343 | if (cam->io == IO_MMAP) { | |
1344 | DBG(3, "Close and open the device again to choose the read " | |
1345 | "method"); | |
ccad7789 | 1346 | mutex_unlock(&cam->fileop_mutex); |
3b2ae0be | 1347 | return -EBUSY; |
7ce08c93 LR |
1348 | } |
1349 | ||
1350 | if (cam->io == IO_NONE) { | |
1351 | if (!et61x251_request_buffers(cam, cam->nreadbuffers, | |
d56410e0 | 1352 | IO_READ)) { |
7ce08c93 | 1353 | DBG(1, "read() failed, not enough memory"); |
ccad7789 | 1354 | mutex_unlock(&cam->fileop_mutex); |
7ce08c93 LR |
1355 | return -ENOMEM; |
1356 | } | |
1357 | cam->io = IO_READ; | |
1358 | cam->stream = STREAM_ON; | |
1359 | } | |
1360 | ||
1361 | if (list_empty(&cam->inqueue)) { | |
1362 | if (!list_empty(&cam->outqueue)) | |
1363 | et61x251_empty_framequeues(cam); | |
1364 | et61x251_queue_unusedframes(cam); | |
1365 | } | |
1366 | ||
1367 | if (!count) { | |
ccad7789 | 1368 | mutex_unlock(&cam->fileop_mutex); |
7ce08c93 LR |
1369 | return 0; |
1370 | } | |
1371 | ||
1372 | if (list_empty(&cam->outqueue)) { | |
1373 | if (filp->f_flags & O_NONBLOCK) { | |
ccad7789 | 1374 | mutex_unlock(&cam->fileop_mutex); |
7ce08c93 LR |
1375 | return -EAGAIN; |
1376 | } | |
ccad7789 | 1377 | timeout = wait_event_interruptible_timeout |
d56410e0 MCC |
1378 | ( cam->wait_frame, |
1379 | (!list_empty(&cam->outqueue)) || | |
1380 | (cam->state & DEV_DISCONNECTED) || | |
1381 | (cam->state & DEV_MISCONFIGURED), | |
1382 | cam->module_param.frame_timeout * | |
1383 | 1000 * msecs_to_jiffies(1) ); | |
ccad7789 LR |
1384 | if (timeout < 0) { |
1385 | mutex_unlock(&cam->fileop_mutex); | |
1386 | return timeout; | |
7ce08c93 LR |
1387 | } |
1388 | if (cam->state & DEV_DISCONNECTED) { | |
ccad7789 | 1389 | mutex_unlock(&cam->fileop_mutex); |
7ce08c93 LR |
1390 | return -ENODEV; |
1391 | } | |
ccad7789 LR |
1392 | if (!timeout || (cam->state & DEV_MISCONFIGURED)) { |
1393 | mutex_unlock(&cam->fileop_mutex); | |
7ce08c93 LR |
1394 | return -EIO; |
1395 | } | |
1396 | } | |
1397 | ||
1398 | f = list_entry(cam->outqueue.prev, struct et61x251_frame_t, frame); | |
1399 | ||
1400 | if (count > f->buf.bytesused) | |
1401 | count = f->buf.bytesused; | |
1402 | ||
1403 | if (copy_to_user(buf, f->bufmem, count)) { | |
1404 | err = -EFAULT; | |
1405 | goto exit; | |
1406 | } | |
1407 | *f_pos += count; | |
1408 | ||
1409 | exit: | |
1410 | spin_lock_irqsave(&cam->queue_lock, lock_flags); | |
1411 | list_for_each_entry(i, &cam->outqueue, frame) | |
1412 | i->state = F_UNUSED; | |
1413 | INIT_LIST_HEAD(&cam->outqueue); | |
1414 | spin_unlock_irqrestore(&cam->queue_lock, lock_flags); | |
1415 | ||
1416 | et61x251_queue_unusedframes(cam); | |
1417 | ||
1418 | PDBGG("Frame #%lu, bytes read: %zu", | |
1419 | (unsigned long)f->buf.index, count); | |
1420 | ||
ccad7789 | 1421 | mutex_unlock(&cam->fileop_mutex); |
7ce08c93 LR |
1422 | |
1423 | return err ? err : count; | |
1424 | } | |
1425 | ||
1426 | ||
1427 | static unsigned int et61x251_poll(struct file *filp, poll_table *wait) | |
1428 | { | |
c170ecf4 | 1429 | struct et61x251_device *cam = video_drvdata(filp); |
7ce08c93 LR |
1430 | struct et61x251_frame_t* f; |
1431 | unsigned long lock_flags; | |
1432 | unsigned int mask = 0; | |
1433 | ||
ccad7789 | 1434 | if (mutex_lock_interruptible(&cam->fileop_mutex)) |
7ce08c93 LR |
1435 | return POLLERR; |
1436 | ||
1437 | if (cam->state & DEV_DISCONNECTED) { | |
1438 | DBG(1, "Device not present"); | |
1439 | goto error; | |
1440 | } | |
1441 | ||
1442 | if (cam->state & DEV_MISCONFIGURED) { | |
1443 | DBG(1, "The camera is misconfigured. Close and open it " | |
1444 | "again."); | |
1445 | goto error; | |
1446 | } | |
1447 | ||
1448 | if (cam->io == IO_NONE) { | |
1449 | if (!et61x251_request_buffers(cam, cam->nreadbuffers, | |
d56410e0 | 1450 | IO_READ)) { |
7ce08c93 LR |
1451 | DBG(1, "poll() failed, not enough memory"); |
1452 | goto error; | |
1453 | } | |
1454 | cam->io = IO_READ; | |
1455 | cam->stream = STREAM_ON; | |
1456 | } | |
1457 | ||
1458 | if (cam->io == IO_READ) { | |
1459 | spin_lock_irqsave(&cam->queue_lock, lock_flags); | |
1460 | list_for_each_entry(f, &cam->outqueue, frame) | |
1461 | f->state = F_UNUSED; | |
1462 | INIT_LIST_HEAD(&cam->outqueue); | |
1463 | spin_unlock_irqrestore(&cam->queue_lock, lock_flags); | |
1464 | et61x251_queue_unusedframes(cam); | |
1465 | } | |
1466 | ||
1467 | poll_wait(filp, &cam->wait_frame, wait); | |
1468 | ||
1469 | if (!list_empty(&cam->outqueue)) | |
1470 | mask |= POLLIN | POLLRDNORM; | |
1471 | ||
ccad7789 | 1472 | mutex_unlock(&cam->fileop_mutex); |
7ce08c93 LR |
1473 | |
1474 | return mask; | |
1475 | ||
1476 | error: | |
ccad7789 | 1477 | mutex_unlock(&cam->fileop_mutex); |
7ce08c93 LR |
1478 | return POLLERR; |
1479 | } | |
1480 | ||
1481 | ||
1482 | static void et61x251_vm_open(struct vm_area_struct* vma) | |
1483 | { | |
1484 | struct et61x251_frame_t* f = vma->vm_private_data; | |
1485 | f->vma_use_count++; | |
1486 | } | |
1487 | ||
1488 | ||
1489 | static void et61x251_vm_close(struct vm_area_struct* vma) | |
1490 | { | |
1491 | /* NOTE: buffers are not freed here */ | |
1492 | struct et61x251_frame_t* f = vma->vm_private_data; | |
1493 | f->vma_use_count--; | |
1494 | } | |
1495 | ||
1496 | ||
1497 | static struct vm_operations_struct et61x251_vm_ops = { | |
1498 | .open = et61x251_vm_open, | |
1499 | .close = et61x251_vm_close, | |
1500 | }; | |
1501 | ||
1502 | ||
1503 | static int et61x251_mmap(struct file* filp, struct vm_area_struct *vma) | |
1504 | { | |
c170ecf4 | 1505 | struct et61x251_device *cam = video_drvdata(filp); |
7ce08c93 | 1506 | unsigned long size = vma->vm_end - vma->vm_start, |
d56410e0 | 1507 | start = vma->vm_start; |
7ce08c93 LR |
1508 | void *pos; |
1509 | u32 i; | |
1510 | ||
ccad7789 | 1511 | if (mutex_lock_interruptible(&cam->fileop_mutex)) |
7ce08c93 LR |
1512 | return -ERESTARTSYS; |
1513 | ||
1514 | if (cam->state & DEV_DISCONNECTED) { | |
1515 | DBG(1, "Device not present"); | |
ccad7789 | 1516 | mutex_unlock(&cam->fileop_mutex); |
7ce08c93 LR |
1517 | return -ENODEV; |
1518 | } | |
1519 | ||
1520 | if (cam->state & DEV_MISCONFIGURED) { | |
1521 | DBG(1, "The camera is misconfigured. Close and open it " | |
1522 | "again."); | |
ccad7789 | 1523 | mutex_unlock(&cam->fileop_mutex); |
7ce08c93 LR |
1524 | return -EIO; |
1525 | } | |
1526 | ||
3b2ae0be LR |
1527 | if (!(vma->vm_flags & (VM_WRITE | VM_READ))) { |
1528 | mutex_unlock(&cam->fileop_mutex); | |
1529 | return -EACCES; | |
1530 | } | |
1531 | ||
1532 | if (cam->io != IO_MMAP || | |
7ce08c93 | 1533 | size != PAGE_ALIGN(cam->frame[0].buf.length)) { |
ccad7789 | 1534 | mutex_unlock(&cam->fileop_mutex); |
7ce08c93 LR |
1535 | return -EINVAL; |
1536 | } | |
1537 | ||
1538 | for (i = 0; i < cam->nbuffers; i++) { | |
1539 | if ((cam->frame[i].buf.m.offset>>PAGE_SHIFT) == vma->vm_pgoff) | |
1540 | break; | |
1541 | } | |
1542 | if (i == cam->nbuffers) { | |
ccad7789 | 1543 | mutex_unlock(&cam->fileop_mutex); |
7ce08c93 LR |
1544 | return -EINVAL; |
1545 | } | |
1546 | ||
1547 | vma->vm_flags |= VM_IO; | |
1548 | vma->vm_flags |= VM_RESERVED; | |
1549 | ||
1550 | pos = cam->frame[i].bufmem; | |
1551 | while (size > 0) { /* size is page-aligned */ | |
1552 | if (vm_insert_page(vma, start, vmalloc_to_page(pos))) { | |
ccad7789 | 1553 | mutex_unlock(&cam->fileop_mutex); |
7ce08c93 LR |
1554 | return -EAGAIN; |
1555 | } | |
1556 | start += PAGE_SIZE; | |
1557 | pos += PAGE_SIZE; | |
1558 | size -= PAGE_SIZE; | |
1559 | } | |
1560 | ||
1561 | vma->vm_ops = &et61x251_vm_ops; | |
1562 | vma->vm_private_data = &cam->frame[i]; | |
7ce08c93 LR |
1563 | et61x251_vm_open(vma); |
1564 | ||
ccad7789 | 1565 | mutex_unlock(&cam->fileop_mutex); |
7ce08c93 LR |
1566 | |
1567 | return 0; | |
1568 | } | |
1569 | ||
1570 | /*****************************************************************************/ | |
1571 | ||
1572 | static int | |
1573 | et61x251_vidioc_querycap(struct et61x251_device* cam, void __user * arg) | |
1574 | { | |
1575 | struct v4l2_capability cap = { | |
1576 | .driver = "et61x251", | |
1577 | .version = ET61X251_MODULE_VERSION_CODE, | |
1578 | .capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_READWRITE | | |
d56410e0 | 1579 | V4L2_CAP_STREAMING, |
7ce08c93 LR |
1580 | }; |
1581 | ||
1582 | strlcpy(cap.card, cam->v4ldev->name, sizeof(cap.card)); | |
1583 | if (usb_make_path(cam->usbdev, cap.bus_info, sizeof(cap.bus_info)) < 0) | |
af128a10 | 1584 | strlcpy(cap.bus_info, dev_name(&cam->usbdev->dev), |
d56410e0 | 1585 | sizeof(cap.bus_info)); |
7ce08c93 LR |
1586 | |
1587 | if (copy_to_user(arg, &cap, sizeof(cap))) | |
1588 | return -EFAULT; | |
1589 | ||
1590 | return 0; | |
1591 | } | |
1592 | ||
1593 | ||
1594 | static int | |
1595 | et61x251_vidioc_enuminput(struct et61x251_device* cam, void __user * arg) | |
1596 | { | |
1597 | struct v4l2_input i; | |
1598 | ||
1599 | if (copy_from_user(&i, arg, sizeof(i))) | |
1600 | return -EFAULT; | |
1601 | ||
1602 | if (i.index) | |
1603 | return -EINVAL; | |
1604 | ||
1605 | memset(&i, 0, sizeof(i)); | |
1606 | strcpy(i.name, "Camera"); | |
ccad7789 | 1607 | i.type = V4L2_INPUT_TYPE_CAMERA; |
7ce08c93 LR |
1608 | |
1609 | if (copy_to_user(arg, &i, sizeof(i))) | |
1610 | return -EFAULT; | |
1611 | ||
1612 | return 0; | |
1613 | } | |
1614 | ||
1615 | ||
1616 | static int | |
ccad7789 LR |
1617 | et61x251_vidioc_g_input(struct et61x251_device* cam, void __user * arg) |
1618 | { | |
1619 | int index = 0; | |
1620 | ||
1621 | if (copy_to_user(arg, &index, sizeof(index))) | |
1622 | return -EFAULT; | |
1623 | ||
1624 | return 0; | |
1625 | } | |
1626 | ||
1627 | ||
1628 | static int | |
1629 | et61x251_vidioc_s_input(struct et61x251_device* cam, void __user * arg) | |
7ce08c93 LR |
1630 | { |
1631 | int index; | |
1632 | ||
1633 | if (copy_from_user(&index, arg, sizeof(index))) | |
1634 | return -EFAULT; | |
1635 | ||
1636 | if (index != 0) | |
1637 | return -EINVAL; | |
1638 | ||
1639 | return 0; | |
1640 | } | |
1641 | ||
1642 | ||
1643 | static int | |
1644 | et61x251_vidioc_query_ctrl(struct et61x251_device* cam, void __user * arg) | |
1645 | { | |
ccad7789 | 1646 | struct et61x251_sensor* s = &cam->sensor; |
7ce08c93 LR |
1647 | struct v4l2_queryctrl qc; |
1648 | u8 i; | |
1649 | ||
1650 | if (copy_from_user(&qc, arg, sizeof(qc))) | |
1651 | return -EFAULT; | |
1652 | ||
1653 | for (i = 0; i < ARRAY_SIZE(s->qctrl); i++) | |
1654 | if (qc.id && qc.id == s->qctrl[i].id) { | |
1655 | memcpy(&qc, &(s->qctrl[i]), sizeof(qc)); | |
1656 | if (copy_to_user(arg, &qc, sizeof(qc))) | |
1657 | return -EFAULT; | |
1658 | return 0; | |
1659 | } | |
1660 | ||
1661 | return -EINVAL; | |
1662 | } | |
1663 | ||
1664 | ||
1665 | static int | |
1666 | et61x251_vidioc_g_ctrl(struct et61x251_device* cam, void __user * arg) | |
1667 | { | |
ccad7789 | 1668 | struct et61x251_sensor* s = &cam->sensor; |
7ce08c93 LR |
1669 | struct v4l2_control ctrl; |
1670 | int err = 0; | |
1671 | u8 i; | |
1672 | ||
1673 | if (!s->get_ctrl && !s->set_ctrl) | |
1674 | return -EINVAL; | |
1675 | ||
1676 | if (copy_from_user(&ctrl, arg, sizeof(ctrl))) | |
1677 | return -EFAULT; | |
1678 | ||
1679 | if (!s->get_ctrl) { | |
1680 | for (i = 0; i < ARRAY_SIZE(s->qctrl); i++) | |
1681 | if (ctrl.id == s->qctrl[i].id) { | |
1682 | ctrl.value = s->_qctrl[i].default_value; | |
1683 | goto exit; | |
1684 | } | |
1685 | return -EINVAL; | |
1686 | } else | |
1687 | err = s->get_ctrl(cam, &ctrl); | |
1688 | ||
1689 | exit: | |
1690 | if (copy_to_user(arg, &ctrl, sizeof(ctrl))) | |
1691 | return -EFAULT; | |
1692 | ||
1693 | return err; | |
1694 | } | |
1695 | ||
1696 | ||
1697 | static int | |
1698 | et61x251_vidioc_s_ctrl(struct et61x251_device* cam, void __user * arg) | |
1699 | { | |
ccad7789 | 1700 | struct et61x251_sensor* s = &cam->sensor; |
7ce08c93 LR |
1701 | struct v4l2_control ctrl; |
1702 | u8 i; | |
1703 | int err = 0; | |
1704 | ||
1705 | if (!s->set_ctrl) | |
1706 | return -EINVAL; | |
1707 | ||
1708 | if (copy_from_user(&ctrl, arg, sizeof(ctrl))) | |
1709 | return -EFAULT; | |
1710 | ||
1711 | for (i = 0; i < ARRAY_SIZE(s->qctrl); i++) | |
1712 | if (ctrl.id == s->qctrl[i].id) { | |
ccad7789 LR |
1713 | if (s->qctrl[i].flags & V4L2_CTRL_FLAG_DISABLED) |
1714 | return -EINVAL; | |
7ce08c93 LR |
1715 | if (ctrl.value < s->qctrl[i].minimum || |
1716 | ctrl.value > s->qctrl[i].maximum) | |
1717 | return -ERANGE; | |
1718 | ctrl.value -= ctrl.value % s->qctrl[i].step; | |
1719 | break; | |
1720 | } | |
1721 | ||
1722 | if ((err = s->set_ctrl(cam, &ctrl))) | |
1723 | return err; | |
1724 | ||
1725 | s->_qctrl[i].default_value = ctrl.value; | |
1726 | ||
1727 | return 0; | |
1728 | } | |
1729 | ||
1730 | ||
1731 | static int | |
1732 | et61x251_vidioc_cropcap(struct et61x251_device* cam, void __user * arg) | |
1733 | { | |
ccad7789 | 1734 | struct v4l2_cropcap* cc = &(cam->sensor.cropcap); |
7ce08c93 LR |
1735 | |
1736 | cc->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
1737 | cc->pixelaspect.numerator = 1; | |
1738 | cc->pixelaspect.denominator = 1; | |
1739 | ||
1740 | if (copy_to_user(arg, cc, sizeof(*cc))) | |
1741 | return -EFAULT; | |
1742 | ||
1743 | return 0; | |
1744 | } | |
1745 | ||
1746 | ||
1747 | static int | |
1748 | et61x251_vidioc_g_crop(struct et61x251_device* cam, void __user * arg) | |
1749 | { | |
ccad7789 | 1750 | struct et61x251_sensor* s = &cam->sensor; |
7ce08c93 LR |
1751 | struct v4l2_crop crop = { |
1752 | .type = V4L2_BUF_TYPE_VIDEO_CAPTURE, | |
1753 | }; | |
1754 | ||
1755 | memcpy(&(crop.c), &(s->_rect), sizeof(struct v4l2_rect)); | |
1756 | ||
1757 | if (copy_to_user(arg, &crop, sizeof(crop))) | |
1758 | return -EFAULT; | |
1759 | ||
1760 | return 0; | |
1761 | } | |
1762 | ||
1763 | ||
1764 | static int | |
1765 | et61x251_vidioc_s_crop(struct et61x251_device* cam, void __user * arg) | |
1766 | { | |
ccad7789 | 1767 | struct et61x251_sensor* s = &cam->sensor; |
7ce08c93 LR |
1768 | struct v4l2_crop crop; |
1769 | struct v4l2_rect* rect; | |
1770 | struct v4l2_rect* bounds = &(s->cropcap.bounds); | |
1771 | struct v4l2_pix_format* pix_format = &(s->pix_format); | |
1772 | u8 scale; | |
1773 | const enum et61x251_stream_state stream = cam->stream; | |
1774 | const u32 nbuffers = cam->nbuffers; | |
1775 | u32 i; | |
1776 | int err = 0; | |
1777 | ||
1778 | if (copy_from_user(&crop, arg, sizeof(crop))) | |
1779 | return -EFAULT; | |
1780 | ||
1781 | rect = &(crop.c); | |
1782 | ||
1783 | if (crop.type != V4L2_BUF_TYPE_VIDEO_CAPTURE) | |
1784 | return -EINVAL; | |
1785 | ||
1786 | if (cam->module_param.force_munmap) | |
1787 | for (i = 0; i < cam->nbuffers; i++) | |
1788 | if (cam->frame[i].vma_use_count) { | |
1789 | DBG(3, "VIDIOC_S_CROP failed. " | |
1790 | "Unmap the buffers first."); | |
3b2ae0be | 1791 | return -EBUSY; |
7ce08c93 LR |
1792 | } |
1793 | ||
1794 | /* Preserve R,G or B origin */ | |
1795 | rect->left = (s->_rect.left & 1L) ? rect->left | 1L : rect->left & ~1L; | |
1796 | rect->top = (s->_rect.top & 1L) ? rect->top | 1L : rect->top & ~1L; | |
1797 | ||
26563127 LR |
1798 | if (rect->width < 16) |
1799 | rect->width = 16; | |
1800 | if (rect->height < 16) | |
1801 | rect->height = 16; | |
7ce08c93 LR |
1802 | if (rect->width > bounds->width) |
1803 | rect->width = bounds->width; | |
1804 | if (rect->height > bounds->height) | |
1805 | rect->height = bounds->height; | |
1806 | if (rect->left < bounds->left) | |
1807 | rect->left = bounds->left; | |
1808 | if (rect->top < bounds->top) | |
1809 | rect->top = bounds->top; | |
1810 | if (rect->left + rect->width > bounds->left + bounds->width) | |
1811 | rect->left = bounds->left+bounds->width - rect->width; | |
1812 | if (rect->top + rect->height > bounds->top + bounds->height) | |
1813 | rect->top = bounds->top+bounds->height - rect->height; | |
1814 | ||
26563127 LR |
1815 | rect->width &= ~15L; |
1816 | rect->height &= ~15L; | |
7ce08c93 LR |
1817 | |
1818 | if (ET61X251_PRESERVE_IMGSCALE) { | |
1819 | /* Calculate the actual scaling factor */ | |
1820 | u32 a, b; | |
1821 | a = rect->width * rect->height; | |
1822 | b = pix_format->width * pix_format->height; | |
1823 | scale = b ? (u8)((a / b) < 4 ? 1 : 2) : 1; | |
1824 | } else | |
1825 | scale = 1; | |
1826 | ||
1827 | if (cam->stream == STREAM_ON) | |
1828 | if ((err = et61x251_stream_interrupt(cam))) | |
1829 | return err; | |
1830 | ||
1831 | if (copy_to_user(arg, &crop, sizeof(crop))) { | |
1832 | cam->stream = stream; | |
1833 | return -EFAULT; | |
1834 | } | |
1835 | ||
1836 | if (cam->module_param.force_munmap || cam->io == IO_READ) | |
1837 | et61x251_release_buffers(cam); | |
1838 | ||
1839 | err = et61x251_set_crop(cam, rect); | |
1840 | if (s->set_crop) | |
1841 | err += s->set_crop(cam, rect); | |
1842 | err += et61x251_set_scale(cam, scale); | |
1843 | ||
1844 | if (err) { /* atomic, no rollback in ioctl() */ | |
1845 | cam->state |= DEV_MISCONFIGURED; | |
1846 | DBG(1, "VIDIOC_S_CROP failed because of hardware problems. To " | |
1847 | "use the camera, close and open /dev/video%d again.", | |
c6330fb8 | 1848 | cam->v4ldev->num); |
7ce08c93 LR |
1849 | return -EIO; |
1850 | } | |
1851 | ||
1852 | s->pix_format.width = rect->width/scale; | |
1853 | s->pix_format.height = rect->height/scale; | |
1854 | memcpy(&(s->_rect), rect, sizeof(*rect)); | |
1855 | ||
1856 | if ((cam->module_param.force_munmap || cam->io == IO_READ) && | |
1857 | nbuffers != et61x251_request_buffers(cam, nbuffers, cam->io)) { | |
1858 | cam->state |= DEV_MISCONFIGURED; | |
1859 | DBG(1, "VIDIOC_S_CROP failed because of not enough memory. To " | |
1860 | "use the camera, close and open /dev/video%d again.", | |
c6330fb8 | 1861 | cam->v4ldev->num); |
7ce08c93 LR |
1862 | return -ENOMEM; |
1863 | } | |
1864 | ||
1865 | if (cam->io == IO_READ) | |
1866 | et61x251_empty_framequeues(cam); | |
1867 | else if (cam->module_param.force_munmap) | |
1868 | et61x251_requeue_outqueue(cam); | |
1869 | ||
1870 | cam->stream = stream; | |
1871 | ||
1872 | return 0; | |
1873 | } | |
1874 | ||
1875 | ||
26563127 LR |
1876 | static int |
1877 | et61x251_vidioc_enum_framesizes(struct et61x251_device* cam, void __user * arg) | |
1878 | { | |
1879 | struct v4l2_frmsizeenum frmsize; | |
1880 | ||
1881 | if (copy_from_user(&frmsize, arg, sizeof(frmsize))) | |
1882 | return -EFAULT; | |
1883 | ||
1884 | if (frmsize.index != 0) | |
1885 | return -EINVAL; | |
1886 | ||
1887 | if (frmsize.pixel_format != V4L2_PIX_FMT_ET61X251 && | |
1888 | frmsize.pixel_format != V4L2_PIX_FMT_SBGGR8) | |
1889 | return -EINVAL; | |
1890 | ||
1891 | frmsize.type = V4L2_FRMSIZE_TYPE_STEPWISE; | |
1892 | frmsize.stepwise.min_width = frmsize.stepwise.step_width = 16; | |
1893 | frmsize.stepwise.min_height = frmsize.stepwise.step_height = 16; | |
1894 | frmsize.stepwise.max_width = cam->sensor.cropcap.bounds.width; | |
1895 | frmsize.stepwise.max_height = cam->sensor.cropcap.bounds.height; | |
1896 | memset(&frmsize.reserved, 0, sizeof(frmsize.reserved)); | |
1897 | ||
1898 | if (copy_to_user(arg, &frmsize, sizeof(frmsize))) | |
1899 | return -EFAULT; | |
1900 | ||
1901 | return 0; | |
1902 | } | |
1903 | ||
1904 | ||
7ce08c93 LR |
1905 | static int |
1906 | et61x251_vidioc_enum_fmt(struct et61x251_device* cam, void __user * arg) | |
1907 | { | |
1908 | struct v4l2_fmtdesc fmtd; | |
1909 | ||
1910 | if (copy_from_user(&fmtd, arg, sizeof(fmtd))) | |
1911 | return -EFAULT; | |
1912 | ||
26563127 LR |
1913 | if (fmtd.type != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
1914 | return -EINVAL; | |
1915 | ||
7ce08c93 LR |
1916 | if (fmtd.index == 0) { |
1917 | strcpy(fmtd.description, "bayer rgb"); | |
1918 | fmtd.pixelformat = V4L2_PIX_FMT_SBGGR8; | |
1919 | } else if (fmtd.index == 1) { | |
1920 | strcpy(fmtd.description, "compressed"); | |
1921 | fmtd.pixelformat = V4L2_PIX_FMT_ET61X251; | |
1922 | fmtd.flags = V4L2_FMT_FLAG_COMPRESSED; | |
1923 | } else | |
1924 | return -EINVAL; | |
1925 | ||
1926 | fmtd.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
1927 | memset(&fmtd.reserved, 0, sizeof(fmtd.reserved)); | |
1928 | ||
1929 | if (copy_to_user(arg, &fmtd, sizeof(fmtd))) | |
1930 | return -EFAULT; | |
1931 | ||
1932 | return 0; | |
1933 | } | |
1934 | ||
1935 | ||
1936 | static int | |
1937 | et61x251_vidioc_g_fmt(struct et61x251_device* cam, void __user * arg) | |
1938 | { | |
1939 | struct v4l2_format format; | |
ccad7789 | 1940 | struct v4l2_pix_format* pfmt = &(cam->sensor.pix_format); |
7ce08c93 LR |
1941 | |
1942 | if (copy_from_user(&format, arg, sizeof(format))) | |
1943 | return -EFAULT; | |
1944 | ||
1945 | if (format.type != V4L2_BUF_TYPE_VIDEO_CAPTURE) | |
1946 | return -EINVAL; | |
1947 | ||
3b2ae0be LR |
1948 | pfmt->colorspace = (pfmt->pixelformat == V4L2_PIX_FMT_ET61X251) ? |
1949 | 0 : V4L2_COLORSPACE_SRGB; | |
7ce08c93 | 1950 | pfmt->bytesperline = (pfmt->pixelformat==V4L2_PIX_FMT_ET61X251) |
d56410e0 | 1951 | ? 0 : (pfmt->width * pfmt->priv) / 8; |
7ce08c93 LR |
1952 | pfmt->sizeimage = pfmt->height * ((pfmt->width*pfmt->priv)/8); |
1953 | pfmt->field = V4L2_FIELD_NONE; | |
1954 | memcpy(&(format.fmt.pix), pfmt, sizeof(*pfmt)); | |
1955 | ||
1956 | if (copy_to_user(arg, &format, sizeof(format))) | |
1957 | return -EFAULT; | |
1958 | ||
1959 | return 0; | |
1960 | } | |
1961 | ||
1962 | ||
1963 | static int | |
1964 | et61x251_vidioc_try_s_fmt(struct et61x251_device* cam, unsigned int cmd, | |
d56410e0 | 1965 | void __user * arg) |
7ce08c93 | 1966 | { |
ccad7789 | 1967 | struct et61x251_sensor* s = &cam->sensor; |
7ce08c93 LR |
1968 | struct v4l2_format format; |
1969 | struct v4l2_pix_format* pix; | |
1970 | struct v4l2_pix_format* pfmt = &(s->pix_format); | |
1971 | struct v4l2_rect* bounds = &(s->cropcap.bounds); | |
1972 | struct v4l2_rect rect; | |
1973 | u8 scale; | |
1974 | const enum et61x251_stream_state stream = cam->stream; | |
1975 | const u32 nbuffers = cam->nbuffers; | |
1976 | u32 i; | |
1977 | int err = 0; | |
1978 | ||
1979 | if (copy_from_user(&format, arg, sizeof(format))) | |
1980 | return -EFAULT; | |
1981 | ||
1982 | pix = &(format.fmt.pix); | |
1983 | ||
1984 | if (format.type != V4L2_BUF_TYPE_VIDEO_CAPTURE) | |
1985 | return -EINVAL; | |
1986 | ||
1987 | memcpy(&rect, &(s->_rect), sizeof(rect)); | |
1988 | ||
1989 | { /* calculate the actual scaling factor */ | |
1990 | u32 a, b; | |
1991 | a = rect.width * rect.height; | |
1992 | b = pix->width * pix->height; | |
1993 | scale = b ? (u8)((a / b) < 4 ? 1 : 2) : 1; | |
1994 | } | |
1995 | ||
1996 | rect.width = scale * pix->width; | |
1997 | rect.height = scale * pix->height; | |
1998 | ||
26563127 LR |
1999 | if (rect.width < 16) |
2000 | rect.width = 16; | |
2001 | if (rect.height < 16) | |
2002 | rect.height = 16; | |
7ce08c93 LR |
2003 | if (rect.width > bounds->left + bounds->width - rect.left) |
2004 | rect.width = bounds->left + bounds->width - rect.left; | |
2005 | if (rect.height > bounds->top + bounds->height - rect.top) | |
2006 | rect.height = bounds->top + bounds->height - rect.top; | |
2007 | ||
26563127 LR |
2008 | rect.width &= ~15L; |
2009 | rect.height &= ~15L; | |
7ce08c93 LR |
2010 | |
2011 | { /* adjust the scaling factor */ | |
2012 | u32 a, b; | |
2013 | a = rect.width * rect.height; | |
2014 | b = pix->width * pix->height; | |
2015 | scale = b ? (u8)((a / b) < 4 ? 1 : 2) : 1; | |
2016 | } | |
2017 | ||
2018 | pix->width = rect.width / scale; | |
2019 | pix->height = rect.height / scale; | |
2020 | ||
2021 | if (pix->pixelformat != V4L2_PIX_FMT_ET61X251 && | |
2022 | pix->pixelformat != V4L2_PIX_FMT_SBGGR8) | |
2023 | pix->pixelformat = pfmt->pixelformat; | |
2024 | pix->priv = pfmt->priv; /* bpp */ | |
3b2ae0be LR |
2025 | pix->colorspace = (pix->pixelformat == V4L2_PIX_FMT_ET61X251) ? |
2026 | 0 : V4L2_COLORSPACE_SRGB; | |
7ce08c93 LR |
2027 | pix->colorspace = pfmt->colorspace; |
2028 | pix->bytesperline = (pix->pixelformat == V4L2_PIX_FMT_ET61X251) | |
d56410e0 | 2029 | ? 0 : (pix->width * pix->priv) / 8; |
7ce08c93 LR |
2030 | pix->sizeimage = pix->height * ((pix->width * pix->priv) / 8); |
2031 | pix->field = V4L2_FIELD_NONE; | |
2032 | ||
2033 | if (cmd == VIDIOC_TRY_FMT) { | |
2034 | if (copy_to_user(arg, &format, sizeof(format))) | |
2035 | return -EFAULT; | |
2036 | return 0; | |
2037 | } | |
2038 | ||
2039 | if (cam->module_param.force_munmap) | |
2040 | for (i = 0; i < cam->nbuffers; i++) | |
2041 | if (cam->frame[i].vma_use_count) { | |
2042 | DBG(3, "VIDIOC_S_FMT failed. " | |
2043 | "Unmap the buffers first."); | |
3b2ae0be | 2044 | return -EBUSY; |
7ce08c93 LR |
2045 | } |
2046 | ||
2047 | if (cam->stream == STREAM_ON) | |
2048 | if ((err = et61x251_stream_interrupt(cam))) | |
2049 | return err; | |
2050 | ||
2051 | if (copy_to_user(arg, &format, sizeof(format))) { | |
2052 | cam->stream = stream; | |
2053 | return -EFAULT; | |
2054 | } | |
2055 | ||
2056 | if (cam->module_param.force_munmap || cam->io == IO_READ) | |
2057 | et61x251_release_buffers(cam); | |
2058 | ||
2059 | err += et61x251_set_pix_format(cam, pix); | |
2060 | err += et61x251_set_crop(cam, &rect); | |
2061 | if (s->set_pix_format) | |
2062 | err += s->set_pix_format(cam, pix); | |
2063 | if (s->set_crop) | |
2064 | err += s->set_crop(cam, &rect); | |
2065 | err += et61x251_set_scale(cam, scale); | |
2066 | ||
2067 | if (err) { /* atomic, no rollback in ioctl() */ | |
2068 | cam->state |= DEV_MISCONFIGURED; | |
2069 | DBG(1, "VIDIOC_S_FMT failed because of hardware problems. To " | |
2070 | "use the camera, close and open /dev/video%d again.", | |
c6330fb8 | 2071 | cam->v4ldev->num); |
7ce08c93 LR |
2072 | return -EIO; |
2073 | } | |
2074 | ||
2075 | memcpy(pfmt, pix, sizeof(*pix)); | |
2076 | memcpy(&(s->_rect), &rect, sizeof(rect)); | |
2077 | ||
2078 | if ((cam->module_param.force_munmap || cam->io == IO_READ) && | |
2079 | nbuffers != et61x251_request_buffers(cam, nbuffers, cam->io)) { | |
2080 | cam->state |= DEV_MISCONFIGURED; | |
2081 | DBG(1, "VIDIOC_S_FMT failed because of not enough memory. To " | |
2082 | "use the camera, close and open /dev/video%d again.", | |
c6330fb8 | 2083 | cam->v4ldev->num); |
7ce08c93 LR |
2084 | return -ENOMEM; |
2085 | } | |
2086 | ||
2087 | if (cam->io == IO_READ) | |
2088 | et61x251_empty_framequeues(cam); | |
2089 | else if (cam->module_param.force_munmap) | |
2090 | et61x251_requeue_outqueue(cam); | |
2091 | ||
2092 | cam->stream = stream; | |
2093 | ||
2094 | return 0; | |
2095 | } | |
2096 | ||
2097 | ||
2098 | static int | |
2099 | et61x251_vidioc_g_jpegcomp(struct et61x251_device* cam, void __user * arg) | |
2100 | { | |
2101 | if (copy_to_user(arg, &cam->compression, | |
d56410e0 | 2102 | sizeof(cam->compression))) |
7ce08c93 LR |
2103 | return -EFAULT; |
2104 | ||
2105 | return 0; | |
2106 | } | |
2107 | ||
2108 | ||
2109 | static int | |
2110 | et61x251_vidioc_s_jpegcomp(struct et61x251_device* cam, void __user * arg) | |
2111 | { | |
2112 | struct v4l2_jpegcompression jc; | |
2113 | const enum et61x251_stream_state stream = cam->stream; | |
2114 | int err = 0; | |
2115 | ||
2116 | if (copy_from_user(&jc, arg, sizeof(jc))) | |
2117 | return -EFAULT; | |
2118 | ||
2119 | if (jc.quality != 0 && jc.quality != 1) | |
2120 | return -EINVAL; | |
2121 | ||
2122 | if (cam->stream == STREAM_ON) | |
2123 | if ((err = et61x251_stream_interrupt(cam))) | |
2124 | return err; | |
2125 | ||
2126 | err += et61x251_set_compression(cam, &jc); | |
2127 | if (err) { /* atomic, no rollback in ioctl() */ | |
2128 | cam->state |= DEV_MISCONFIGURED; | |
2129 | DBG(1, "VIDIOC_S_JPEGCOMP failed because of hardware " | |
2130 | "problems. To use the camera, close and open " | |
c6330fb8 | 2131 | "/dev/video%d again.", cam->v4ldev->num); |
7ce08c93 LR |
2132 | return -EIO; |
2133 | } | |
2134 | ||
2135 | cam->compression.quality = jc.quality; | |
2136 | ||
2137 | cam->stream = stream; | |
2138 | ||
2139 | return 0; | |
2140 | } | |
2141 | ||
2142 | ||
2143 | static int | |
2144 | et61x251_vidioc_reqbufs(struct et61x251_device* cam, void __user * arg) | |
2145 | { | |
2146 | struct v4l2_requestbuffers rb; | |
2147 | u32 i; | |
2148 | int err; | |
2149 | ||
2150 | if (copy_from_user(&rb, arg, sizeof(rb))) | |
2151 | return -EFAULT; | |
2152 | ||
2153 | if (rb.type != V4L2_BUF_TYPE_VIDEO_CAPTURE || | |
2154 | rb.memory != V4L2_MEMORY_MMAP) | |
2155 | return -EINVAL; | |
2156 | ||
2157 | if (cam->io == IO_READ) { | |
2158 | DBG(3, "Close and open the device again to choose the mmap " | |
2159 | "I/O method"); | |
3b2ae0be | 2160 | return -EBUSY; |
7ce08c93 LR |
2161 | } |
2162 | ||
2163 | for (i = 0; i < cam->nbuffers; i++) | |
2164 | if (cam->frame[i].vma_use_count) { | |
2165 | DBG(3, "VIDIOC_REQBUFS failed. " | |
2166 | "Previous buffers are still mapped."); | |
3b2ae0be | 2167 | return -EBUSY; |
7ce08c93 LR |
2168 | } |
2169 | ||
2170 | if (cam->stream == STREAM_ON) | |
2171 | if ((err = et61x251_stream_interrupt(cam))) | |
2172 | return err; | |
2173 | ||
2174 | et61x251_empty_framequeues(cam); | |
2175 | ||
2176 | et61x251_release_buffers(cam); | |
2177 | if (rb.count) | |
2178 | rb.count = et61x251_request_buffers(cam, rb.count, IO_MMAP); | |
2179 | ||
2180 | if (copy_to_user(arg, &rb, sizeof(rb))) { | |
2181 | et61x251_release_buffers(cam); | |
2182 | cam->io = IO_NONE; | |
2183 | return -EFAULT; | |
2184 | } | |
2185 | ||
2186 | cam->io = rb.count ? IO_MMAP : IO_NONE; | |
2187 | ||
2188 | return 0; | |
2189 | } | |
2190 | ||
2191 | ||
2192 | static int | |
2193 | et61x251_vidioc_querybuf(struct et61x251_device* cam, void __user * arg) | |
2194 | { | |
2195 | struct v4l2_buffer b; | |
2196 | ||
2197 | if (copy_from_user(&b, arg, sizeof(b))) | |
2198 | return -EFAULT; | |
2199 | ||
2200 | if (b.type != V4L2_BUF_TYPE_VIDEO_CAPTURE || | |
2201 | b.index >= cam->nbuffers || cam->io != IO_MMAP) | |
2202 | return -EINVAL; | |
2203 | ||
2204 | memcpy(&b, &cam->frame[b.index].buf, sizeof(b)); | |
2205 | ||
2206 | if (cam->frame[b.index].vma_use_count) | |
2207 | b.flags |= V4L2_BUF_FLAG_MAPPED; | |
2208 | ||
2209 | if (cam->frame[b.index].state == F_DONE) | |
2210 | b.flags |= V4L2_BUF_FLAG_DONE; | |
2211 | else if (cam->frame[b.index].state != F_UNUSED) | |
2212 | b.flags |= V4L2_BUF_FLAG_QUEUED; | |
2213 | ||
2214 | if (copy_to_user(arg, &b, sizeof(b))) | |
2215 | return -EFAULT; | |
2216 | ||
2217 | return 0; | |
2218 | } | |
2219 | ||
2220 | ||
2221 | static int | |
2222 | et61x251_vidioc_qbuf(struct et61x251_device* cam, void __user * arg) | |
2223 | { | |
2224 | struct v4l2_buffer b; | |
2225 | unsigned long lock_flags; | |
2226 | ||
2227 | if (copy_from_user(&b, arg, sizeof(b))) | |
2228 | return -EFAULT; | |
2229 | ||
2230 | if (b.type != V4L2_BUF_TYPE_VIDEO_CAPTURE || | |
2231 | b.index >= cam->nbuffers || cam->io != IO_MMAP) | |
2232 | return -EINVAL; | |
2233 | ||
2234 | if (cam->frame[b.index].state != F_UNUSED) | |
2235 | return -EINVAL; | |
2236 | ||
2237 | cam->frame[b.index].state = F_QUEUED; | |
2238 | ||
2239 | spin_lock_irqsave(&cam->queue_lock, lock_flags); | |
2240 | list_add_tail(&cam->frame[b.index].frame, &cam->inqueue); | |
2241 | spin_unlock_irqrestore(&cam->queue_lock, lock_flags); | |
2242 | ||
2243 | PDBGG("Frame #%lu queued", (unsigned long)b.index); | |
2244 | ||
2245 | return 0; | |
2246 | } | |
2247 | ||
2248 | ||
2249 | static int | |
2250 | et61x251_vidioc_dqbuf(struct et61x251_device* cam, struct file* filp, | |
d56410e0 | 2251 | void __user * arg) |
7ce08c93 LR |
2252 | { |
2253 | struct v4l2_buffer b; | |
2254 | struct et61x251_frame_t *f; | |
2255 | unsigned long lock_flags; | |
ccad7789 | 2256 | long timeout; |
7ce08c93 LR |
2257 | |
2258 | if (copy_from_user(&b, arg, sizeof(b))) | |
2259 | return -EFAULT; | |
2260 | ||
2261 | if (b.type != V4L2_BUF_TYPE_VIDEO_CAPTURE || cam->io!= IO_MMAP) | |
2262 | return -EINVAL; | |
2263 | ||
2264 | if (list_empty(&cam->outqueue)) { | |
2265 | if (cam->stream == STREAM_OFF) | |
2266 | return -EINVAL; | |
2267 | if (filp->f_flags & O_NONBLOCK) | |
2268 | return -EAGAIN; | |
ccad7789 | 2269 | timeout = wait_event_interruptible_timeout |
d56410e0 MCC |
2270 | ( cam->wait_frame, |
2271 | (!list_empty(&cam->outqueue)) || | |
2272 | (cam->state & DEV_DISCONNECTED) || | |
2273 | (cam->state & DEV_MISCONFIGURED), | |
2274 | cam->module_param.frame_timeout * | |
2275 | 1000 * msecs_to_jiffies(1) ); | |
ccad7789 LR |
2276 | if (timeout < 0) |
2277 | return timeout; | |
7ce08c93 LR |
2278 | if (cam->state & DEV_DISCONNECTED) |
2279 | return -ENODEV; | |
ccad7789 | 2280 | if (!timeout || (cam->state & DEV_MISCONFIGURED)) |
7ce08c93 LR |
2281 | return -EIO; |
2282 | } | |
2283 | ||
2284 | spin_lock_irqsave(&cam->queue_lock, lock_flags); | |
2285 | f = list_entry(cam->outqueue.next, struct et61x251_frame_t, frame); | |
2286 | list_del(cam->outqueue.next); | |
2287 | spin_unlock_irqrestore(&cam->queue_lock, lock_flags); | |
2288 | ||
2289 | f->state = F_UNUSED; | |
2290 | ||
2291 | memcpy(&b, &f->buf, sizeof(b)); | |
2292 | if (f->vma_use_count) | |
2293 | b.flags |= V4L2_BUF_FLAG_MAPPED; | |
2294 | ||
2295 | if (copy_to_user(arg, &b, sizeof(b))) | |
2296 | return -EFAULT; | |
2297 | ||
2298 | PDBGG("Frame #%lu dequeued", (unsigned long)f->buf.index); | |
2299 | ||
2300 | return 0; | |
2301 | } | |
2302 | ||
2303 | ||
2304 | static int | |
2305 | et61x251_vidioc_streamon(struct et61x251_device* cam, void __user * arg) | |
2306 | { | |
2307 | int type; | |
2308 | ||
2309 | if (copy_from_user(&type, arg, sizeof(type))) | |
2310 | return -EFAULT; | |
2311 | ||
2312 | if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE || cam->io != IO_MMAP) | |
2313 | return -EINVAL; | |
2314 | ||
7ce08c93 LR |
2315 | cam->stream = STREAM_ON; |
2316 | ||
2317 | DBG(3, "Stream on"); | |
2318 | ||
2319 | return 0; | |
2320 | } | |
2321 | ||
2322 | ||
2323 | static int | |
2324 | et61x251_vidioc_streamoff(struct et61x251_device* cam, void __user * arg) | |
2325 | { | |
2326 | int type, err; | |
2327 | ||
2328 | if (copy_from_user(&type, arg, sizeof(type))) | |
2329 | return -EFAULT; | |
2330 | ||
2331 | if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE || cam->io != IO_MMAP) | |
2332 | return -EINVAL; | |
2333 | ||
2334 | if (cam->stream == STREAM_ON) | |
2335 | if ((err = et61x251_stream_interrupt(cam))) | |
2336 | return err; | |
2337 | ||
2338 | et61x251_empty_framequeues(cam); | |
2339 | ||
2340 | DBG(3, "Stream off"); | |
2341 | ||
2342 | return 0; | |
2343 | } | |
2344 | ||
2345 | ||
2346 | static int | |
2347 | et61x251_vidioc_g_parm(struct et61x251_device* cam, void __user * arg) | |
2348 | { | |
2349 | struct v4l2_streamparm sp; | |
2350 | ||
2351 | if (copy_from_user(&sp, arg, sizeof(sp))) | |
2352 | return -EFAULT; | |
2353 | ||
2354 | if (sp.type != V4L2_BUF_TYPE_VIDEO_CAPTURE) | |
2355 | return -EINVAL; | |
2356 | ||
2357 | sp.parm.capture.extendedmode = 0; | |
2358 | sp.parm.capture.readbuffers = cam->nreadbuffers; | |
2359 | ||
2360 | if (copy_to_user(arg, &sp, sizeof(sp))) | |
2361 | return -EFAULT; | |
2362 | ||
2363 | return 0; | |
2364 | } | |
2365 | ||
2366 | ||
2367 | static int | |
2368 | et61x251_vidioc_s_parm(struct et61x251_device* cam, void __user * arg) | |
2369 | { | |
2370 | struct v4l2_streamparm sp; | |
2371 | ||
2372 | if (copy_from_user(&sp, arg, sizeof(sp))) | |
2373 | return -EFAULT; | |
2374 | ||
2375 | if (sp.type != V4L2_BUF_TYPE_VIDEO_CAPTURE) | |
2376 | return -EINVAL; | |
2377 | ||
2378 | sp.parm.capture.extendedmode = 0; | |
2379 | ||
2380 | if (sp.parm.capture.readbuffers == 0) | |
2381 | sp.parm.capture.readbuffers = cam->nreadbuffers; | |
2382 | ||
2383 | if (sp.parm.capture.readbuffers > ET61X251_MAX_FRAMES) | |
2384 | sp.parm.capture.readbuffers = ET61X251_MAX_FRAMES; | |
2385 | ||
2386 | if (copy_to_user(arg, &sp, sizeof(sp))) | |
2387 | return -EFAULT; | |
2388 | ||
2389 | cam->nreadbuffers = sp.parm.capture.readbuffers; | |
2390 | ||
2391 | return 0; | |
2392 | } | |
2393 | ||
2394 | ||
069b7479 | 2395 | static long et61x251_ioctl_v4l2(struct file *filp, |
bec43661 | 2396 | unsigned int cmd, void __user *arg) |
7ce08c93 | 2397 | { |
c170ecf4 | 2398 | struct et61x251_device *cam = video_drvdata(filp); |
7ce08c93 LR |
2399 | |
2400 | switch (cmd) { | |
2401 | ||
2402 | case VIDIOC_QUERYCAP: | |
2403 | return et61x251_vidioc_querycap(cam, arg); | |
2404 | ||
2405 | case VIDIOC_ENUMINPUT: | |
2406 | return et61x251_vidioc_enuminput(cam, arg); | |
2407 | ||
2408 | case VIDIOC_G_INPUT: | |
ccad7789 LR |
2409 | return et61x251_vidioc_g_input(cam, arg); |
2410 | ||
7ce08c93 | 2411 | case VIDIOC_S_INPUT: |
ccad7789 | 2412 | return et61x251_vidioc_s_input(cam, arg); |
7ce08c93 LR |
2413 | |
2414 | case VIDIOC_QUERYCTRL: | |
2415 | return et61x251_vidioc_query_ctrl(cam, arg); | |
2416 | ||
2417 | case VIDIOC_G_CTRL: | |
2418 | return et61x251_vidioc_g_ctrl(cam, arg); | |
2419 | ||
7ce08c93 LR |
2420 | case VIDIOC_S_CTRL: |
2421 | return et61x251_vidioc_s_ctrl(cam, arg); | |
2422 | ||
7ce08c93 LR |
2423 | case VIDIOC_CROPCAP: |
2424 | return et61x251_vidioc_cropcap(cam, arg); | |
2425 | ||
2426 | case VIDIOC_G_CROP: | |
2427 | return et61x251_vidioc_g_crop(cam, arg); | |
2428 | ||
2429 | case VIDIOC_S_CROP: | |
2430 | return et61x251_vidioc_s_crop(cam, arg); | |
2431 | ||
2432 | case VIDIOC_ENUM_FMT: | |
2433 | return et61x251_vidioc_enum_fmt(cam, arg); | |
2434 | ||
2435 | case VIDIOC_G_FMT: | |
2436 | return et61x251_vidioc_g_fmt(cam, arg); | |
2437 | ||
2438 | case VIDIOC_TRY_FMT: | |
2439 | case VIDIOC_S_FMT: | |
2440 | return et61x251_vidioc_try_s_fmt(cam, cmd, arg); | |
2441 | ||
26563127 LR |
2442 | case VIDIOC_ENUM_FRAMESIZES: |
2443 | return et61x251_vidioc_enum_framesizes(cam, arg); | |
2444 | ||
7ce08c93 LR |
2445 | case VIDIOC_G_JPEGCOMP: |
2446 | return et61x251_vidioc_g_jpegcomp(cam, arg); | |
2447 | ||
2448 | case VIDIOC_S_JPEGCOMP: | |
2449 | return et61x251_vidioc_s_jpegcomp(cam, arg); | |
2450 | ||
2451 | case VIDIOC_REQBUFS: | |
2452 | return et61x251_vidioc_reqbufs(cam, arg); | |
2453 | ||
2454 | case VIDIOC_QUERYBUF: | |
2455 | return et61x251_vidioc_querybuf(cam, arg); | |
2456 | ||
2457 | case VIDIOC_QBUF: | |
2458 | return et61x251_vidioc_qbuf(cam, arg); | |
2459 | ||
2460 | case VIDIOC_DQBUF: | |
2461 | return et61x251_vidioc_dqbuf(cam, filp, arg); | |
2462 | ||
2463 | case VIDIOC_STREAMON: | |
2464 | return et61x251_vidioc_streamon(cam, arg); | |
2465 | ||
2466 | case VIDIOC_STREAMOFF: | |
2467 | return et61x251_vidioc_streamoff(cam, arg); | |
2468 | ||
2469 | case VIDIOC_G_PARM: | |
2470 | return et61x251_vidioc_g_parm(cam, arg); | |
2471 | ||
7ce08c93 LR |
2472 | case VIDIOC_S_PARM: |
2473 | return et61x251_vidioc_s_parm(cam, arg); | |
2474 | ||
2475 | case VIDIOC_G_STD: | |
2476 | case VIDIOC_S_STD: | |
2477 | case VIDIOC_QUERYSTD: | |
2478 | case VIDIOC_ENUMSTD: | |
2479 | case VIDIOC_QUERYMENU: | |
26563127 | 2480 | case VIDIOC_ENUM_FRAMEINTERVALS: |
7ce08c93 LR |
2481 | return -EINVAL; |
2482 | ||
2483 | default: | |
2484 | return -EINVAL; | |
2485 | ||
2486 | } | |
2487 | } | |
2488 | ||
2489 | ||
069b7479 | 2490 | static long et61x251_ioctl(struct file *filp, |
d56410e0 | 2491 | unsigned int cmd, unsigned long arg) |
7ce08c93 | 2492 | { |
c170ecf4 | 2493 | struct et61x251_device *cam = video_drvdata(filp); |
069b7479 | 2494 | long err = 0; |
7ce08c93 | 2495 | |
ccad7789 | 2496 | if (mutex_lock_interruptible(&cam->fileop_mutex)) |
7ce08c93 LR |
2497 | return -ERESTARTSYS; |
2498 | ||
2499 | if (cam->state & DEV_DISCONNECTED) { | |
2500 | DBG(1, "Device not present"); | |
ccad7789 | 2501 | mutex_unlock(&cam->fileop_mutex); |
7ce08c93 LR |
2502 | return -ENODEV; |
2503 | } | |
2504 | ||
2505 | if (cam->state & DEV_MISCONFIGURED) { | |
2506 | DBG(1, "The camera is misconfigured. Close and open it " | |
2507 | "again."); | |
ccad7789 | 2508 | mutex_unlock(&cam->fileop_mutex); |
7ce08c93 LR |
2509 | return -EIO; |
2510 | } | |
2511 | ||
2512 | V4LDBG(3, "et61x251", cmd); | |
2513 | ||
bec43661 | 2514 | err = et61x251_ioctl_v4l2(filp, cmd, (void __user *)arg); |
7ce08c93 | 2515 | |
ccad7789 | 2516 | mutex_unlock(&cam->fileop_mutex); |
7ce08c93 LR |
2517 | |
2518 | return err; | |
2519 | } | |
2520 | ||
2521 | ||
bec43661 | 2522 | static const struct v4l2_file_operations et61x251_fops = { |
7ce08c93 LR |
2523 | .owner = THIS_MODULE, |
2524 | .open = et61x251_open, | |
2525 | .release = et61x251_release, | |
2526 | .ioctl = et61x251_ioctl, | |
2527 | .read = et61x251_read, | |
2528 | .poll = et61x251_poll, | |
2529 | .mmap = et61x251_mmap, | |
7ce08c93 LR |
2530 | }; |
2531 | ||
2532 | /*****************************************************************************/ | |
2533 | ||
2534 | /* It exists a single interface only. We do not need to validate anything. */ | |
2535 | static int | |
2536 | et61x251_usb_probe(struct usb_interface* intf, const struct usb_device_id* id) | |
2537 | { | |
2538 | struct usb_device *udev = interface_to_usbdev(intf); | |
2539 | struct et61x251_device* cam; | |
ff699e6b | 2540 | static unsigned int dev_nr; |
7ce08c93 LR |
2541 | unsigned int i; |
2542 | int err = 0; | |
2543 | ||
2544 | if (!(cam = kzalloc(sizeof(struct et61x251_device), GFP_KERNEL))) | |
2545 | return -ENOMEM; | |
2546 | ||
2547 | cam->usbdev = udev; | |
2548 | ||
2549 | if (!(cam->control_buffer = kzalloc(8, GFP_KERNEL))) { | |
2550 | DBG(1, "kmalloc() failed"); | |
2551 | err = -ENOMEM; | |
2552 | goto fail; | |
2553 | } | |
2554 | ||
2555 | if (!(cam->v4ldev = video_device_alloc())) { | |
2556 | DBG(1, "video_device_alloc() failed"); | |
2557 | err = -ENOMEM; | |
2558 | goto fail; | |
2559 | } | |
2560 | ||
7ce08c93 | 2561 | DBG(2, "ET61X[12]51 PC Camera Controller detected " |
26563127 | 2562 | "(vid/pid 0x%04X:0x%04X)",id->idVendor, id->idProduct); |
7ce08c93 LR |
2563 | |
2564 | for (i = 0; et61x251_sensor_table[i]; i++) { | |
2565 | err = et61x251_sensor_table[i](cam); | |
2566 | if (!err) | |
2567 | break; | |
2568 | } | |
2569 | ||
ccad7789 LR |
2570 | if (!err) |
2571 | DBG(2, "%s image sensor detected", cam->sensor.name); | |
7ce08c93 LR |
2572 | else { |
2573 | DBG(1, "No supported image sensor detected"); | |
2574 | err = -ENODEV; | |
2575 | goto fail; | |
2576 | } | |
2577 | ||
2578 | if (et61x251_init(cam)) { | |
2579 | DBG(1, "Initialization failed. I will retry on open()."); | |
2580 | cam->state |= DEV_MISCONFIGURED; | |
2581 | } | |
2582 | ||
2583 | strcpy(cam->v4ldev->name, "ET61X[12]51 PC Camera"); | |
7ce08c93 LR |
2584 | cam->v4ldev->fops = &et61x251_fops; |
2585 | cam->v4ldev->minor = video_nr[dev_nr]; | |
2586 | cam->v4ldev->release = video_device_release; | |
748c7f80 | 2587 | cam->v4ldev->parent = &udev->dev; |
7ce08c93 LR |
2588 | video_set_drvdata(cam->v4ldev, cam); |
2589 | ||
3b2ae0be | 2590 | init_completion(&cam->probe); |
7ce08c93 LR |
2591 | |
2592 | err = video_register_device(cam->v4ldev, VFL_TYPE_GRABBER, | |
d56410e0 | 2593 | video_nr[dev_nr]); |
7ce08c93 LR |
2594 | if (err) { |
2595 | DBG(1, "V4L2 device registration failed"); | |
2596 | if (err == -ENFILE && video_nr[dev_nr] == -1) | |
2597 | DBG(1, "Free /dev/videoX node not found"); | |
2598 | video_nr[dev_nr] = -1; | |
2599 | dev_nr = (dev_nr < ET61X251_MAX_DEVICES-1) ? dev_nr+1 : 0; | |
3b2ae0be | 2600 | complete_all(&cam->probe); |
7ce08c93 LR |
2601 | goto fail; |
2602 | } | |
2603 | ||
c6330fb8 | 2604 | DBG(2, "V4L2 device registered as /dev/video%d", cam->v4ldev->num); |
7ce08c93 LR |
2605 | |
2606 | cam->module_param.force_munmap = force_munmap[dev_nr]; | |
ccad7789 | 2607 | cam->module_param.frame_timeout = frame_timeout[dev_nr]; |
7ce08c93 LR |
2608 | |
2609 | dev_nr = (dev_nr < ET61X251_MAX_DEVICES-1) ? dev_nr+1 : 0; | |
2610 | ||
2611 | #ifdef CONFIG_VIDEO_ADV_DEBUG | |
c12e3be0 | 2612 | err = et61x251_create_sysfs(cam); |
26563127 LR |
2613 | if (!err) |
2614 | DBG(2, "Optional device control through 'sysfs' " | |
2615 | "interface ready"); | |
2616 | else | |
2617 | DBG(2, "Failed to create 'sysfs' interface for optional " | |
2618 | "device controlling. Error #%d", err); | |
2619 | #else | |
2620 | DBG(2, "Optional device control through 'sysfs' interface disabled"); | |
3b2ae0be LR |
2621 | DBG(3, "Compile the kernel with the 'CONFIG_VIDEO_ADV_DEBUG' " |
2622 | "configuration option to enable it."); | |
7ce08c93 LR |
2623 | #endif |
2624 | ||
2625 | usb_set_intfdata(intf, cam); | |
3b2ae0be LR |
2626 | kref_init(&cam->kref); |
2627 | usb_get_dev(cam->usbdev); | |
7ce08c93 | 2628 | |
3b2ae0be | 2629 | complete_all(&cam->probe); |
7ce08c93 LR |
2630 | |
2631 | return 0; | |
2632 | ||
2633 | fail: | |
2634 | if (cam) { | |
2635 | kfree(cam->control_buffer); | |
2636 | if (cam->v4ldev) | |
2637 | video_device_release(cam->v4ldev); | |
2638 | kfree(cam); | |
2639 | } | |
2640 | return err; | |
2641 | } | |
2642 | ||
2643 | ||
2644 | static void et61x251_usb_disconnect(struct usb_interface* intf) | |
2645 | { | |
3b2ae0be | 2646 | struct et61x251_device* cam; |
7ce08c93 | 2647 | |
3b2ae0be | 2648 | down_write(&et61x251_dev_lock); |
7ce08c93 | 2649 | |
3b2ae0be | 2650 | cam = usb_get_intfdata(intf); |
7ce08c93 LR |
2651 | |
2652 | DBG(2, "Disconnecting %s...", cam->v4ldev->name); | |
2653 | ||
7ce08c93 LR |
2654 | if (cam->users) { |
2655 | DBG(2, "Device /dev/video%d is open! Deregistration and " | |
3b2ae0be | 2656 | "memory deallocation are deferred.", |
c6330fb8 | 2657 | cam->v4ldev->num); |
7ce08c93 LR |
2658 | cam->state |= DEV_MISCONFIGURED; |
2659 | et61x251_stop_transfer(cam); | |
2660 | cam->state |= DEV_DISCONNECTED; | |
2661 | wake_up_interruptible(&cam->wait_frame); | |
ccad7789 | 2662 | wake_up(&cam->wait_stream); |
3b2ae0be | 2663 | } else |
7ce08c93 | 2664 | cam->state |= DEV_DISCONNECTED; |
7ce08c93 | 2665 | |
3b2ae0be | 2666 | wake_up_interruptible_all(&cam->wait_open); |
7ce08c93 | 2667 | |
3b2ae0be | 2668 | kref_put(&cam->kref, et61x251_release_resources); |
7ce08c93 | 2669 | |
3b2ae0be | 2670 | up_write(&et61x251_dev_lock); |
7ce08c93 LR |
2671 | } |
2672 | ||
2673 | ||
2674 | static struct usb_driver et61x251_usb_driver = { | |
2675 | .name = "et61x251", | |
2676 | .id_table = et61x251_id_table, | |
2677 | .probe = et61x251_usb_probe, | |
2678 | .disconnect = et61x251_usb_disconnect, | |
2679 | }; | |
2680 | ||
2681 | /*****************************************************************************/ | |
2682 | ||
2683 | static int __init et61x251_module_init(void) | |
2684 | { | |
2685 | int err = 0; | |
2686 | ||
2687 | KDBG(2, ET61X251_MODULE_NAME " v" ET61X251_MODULE_VERSION); | |
2688 | KDBG(3, ET61X251_MODULE_AUTHOR); | |
2689 | ||
2690 | if ((err = usb_register(&et61x251_usb_driver))) | |
2691 | KDBG(1, "usb_register() failed"); | |
2692 | ||
2693 | return err; | |
2694 | } | |
2695 | ||
2696 | ||
2697 | static void __exit et61x251_module_exit(void) | |
2698 | { | |
2699 | usb_deregister(&et61x251_usb_driver); | |
2700 | } | |
2701 | ||
2702 | ||
2703 | module_init(et61x251_module_init); | |
2704 | module_exit(et61x251_module_exit); |