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7ce08c93 LR |
1 | /*************************************************************************** |
2 | * V4L2 driver for ET61X[12]51 PC Camera Controllers * | |
3 | * * | |
4 | * Copyright (C) 2006 by Luca Risolia <luca.risolia@studio.unibo.it> * | |
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> | |
25 | #include <linux/moduleparam.h> | |
26 | #include <linux/errno.h> | |
27 | #include <linux/slab.h> | |
7ce08c93 LR |
28 | #include <linux/device.h> |
29 | #include <linux/fs.h> | |
30 | #include <linux/delay.h> | |
7ce08c93 LR |
31 | #include <linux/compiler.h> |
32 | #include <linux/ioctl.h> | |
33 | #include <linux/poll.h> | |
34 | #include <linux/stat.h> | |
35 | #include <linux/mm.h> | |
36 | #include <linux/vmalloc.h> | |
37 | #include <linux/page-flags.h> | |
38 | #include <linux/byteorder/generic.h> | |
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" |
7ce08c93 LR |
48 | #define ET61X251_MODULE_AUTHOR "(C) 2006 Luca Risolia" |
49 | #define ET61X251_AUTHOR_EMAIL "<luca.risolia@studio.unibo.it>" | |
50 | #define ET61X251_MODULE_LICENSE "GPL" | |
ccad7789 LR |
51 | #define ET61X251_MODULE_VERSION "1:1.02" |
52 | #define ET61X251_MODULE_VERSION_CODE KERNEL_VERSION(1, 0, 2) | |
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)" | |
88 | "\nDefault value is "__MODULE_STRING(SN9C102_FORCE_MUNMAP)"." | |
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) { | |
136 | if ((buff = vmalloc_32(cam->nbuffers * PAGE_ALIGN(imagesize)))) | |
137 | break; | |
138 | cam->nbuffers--; | |
139 | } | |
140 | ||
141 | for (i = 0; i < cam->nbuffers; i++) { | |
142 | cam->frame[i].bufmem = buff + i*PAGE_ALIGN(imagesize); | |
143 | cam->frame[i].buf.index = i; | |
144 | cam->frame[i].buf.m.offset = i*PAGE_ALIGN(imagesize); | |
145 | cam->frame[i].buf.length = imagesize; | |
146 | cam->frame[i].buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
147 | cam->frame[i].buf.sequence = 0; | |
148 | cam->frame[i].buf.field = V4L2_FIELD_NONE; | |
149 | cam->frame[i].buf.memory = V4L2_MEMORY_MMAP; | |
150 | cam->frame[i].buf.flags = 0; | |
151 | } | |
152 | ||
153 | return cam->nbuffers; | |
154 | } | |
155 | ||
156 | ||
157 | static void et61x251_release_buffers(struct et61x251_device* cam) | |
158 | { | |
159 | if (cam->nbuffers) { | |
160 | vfree(cam->frame[0].bufmem); | |
161 | cam->nbuffers = 0; | |
162 | } | |
163 | cam->frame_current = NULL; | |
164 | } | |
165 | ||
166 | ||
167 | static void et61x251_empty_framequeues(struct et61x251_device* cam) | |
168 | { | |
169 | u32 i; | |
170 | ||
171 | INIT_LIST_HEAD(&cam->inqueue); | |
172 | INIT_LIST_HEAD(&cam->outqueue); | |
173 | ||
174 | for (i = 0; i < ET61X251_MAX_FRAMES; i++) { | |
175 | cam->frame[i].state = F_UNUSED; | |
176 | cam->frame[i].buf.bytesused = 0; | |
177 | } | |
178 | } | |
179 | ||
180 | ||
181 | static void et61x251_requeue_outqueue(struct et61x251_device* cam) | |
182 | { | |
183 | struct et61x251_frame_t *i; | |
184 | ||
185 | list_for_each_entry(i, &cam->outqueue, frame) { | |
186 | i->state = F_QUEUED; | |
187 | list_add(&i->frame, &cam->inqueue); | |
188 | } | |
189 | ||
190 | INIT_LIST_HEAD(&cam->outqueue); | |
191 | } | |
192 | ||
193 | ||
194 | static void et61x251_queue_unusedframes(struct et61x251_device* cam) | |
195 | { | |
196 | unsigned long lock_flags; | |
197 | u32 i; | |
198 | ||
199 | for (i = 0; i < cam->nbuffers; i++) | |
200 | if (cam->frame[i].state == F_UNUSED) { | |
201 | cam->frame[i].state = F_QUEUED; | |
202 | spin_lock_irqsave(&cam->queue_lock, lock_flags); | |
203 | list_add_tail(&cam->frame[i].frame, &cam->inqueue); | |
204 | spin_unlock_irqrestore(&cam->queue_lock, lock_flags); | |
205 | } | |
206 | } | |
207 | ||
208 | /*****************************************************************************/ | |
209 | ||
210 | int et61x251_write_reg(struct et61x251_device* cam, u8 value, u16 index) | |
211 | { | |
212 | struct usb_device* udev = cam->usbdev; | |
213 | u8* buff = cam->control_buffer; | |
214 | int res; | |
215 | ||
216 | *buff = value; | |
217 | ||
218 | res = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x00, 0x41, | |
d56410e0 | 219 | 0, index, buff, 1, ET61X251_CTRL_TIMEOUT); |
7ce08c93 LR |
220 | if (res < 0) { |
221 | DBG(3, "Failed to write a register (value 0x%02X, index " | |
222 | "0x%02X, error %d)", value, index, res); | |
223 | return -1; | |
224 | } | |
225 | ||
226 | return 0; | |
227 | } | |
228 | ||
229 | ||
230 | int et61x251_read_reg(struct et61x251_device* cam, u16 index) | |
231 | { | |
232 | struct usb_device* udev = cam->usbdev; | |
233 | u8* buff = cam->control_buffer; | |
234 | int res; | |
235 | ||
236 | res = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x00, 0xc1, | |
d56410e0 | 237 | 0, index, buff, 1, ET61X251_CTRL_TIMEOUT); |
7ce08c93 LR |
238 | if (res < 0) |
239 | DBG(3, "Failed to read a register (index 0x%02X, error %d)", | |
240 | index, res); | |
241 | ||
242 | return (res >= 0) ? (int)(*buff) : -1; | |
243 | } | |
244 | ||
245 | ||
246 | static int | |
247 | et61x251_i2c_wait(struct et61x251_device* cam, struct et61x251_sensor* sensor) | |
248 | { | |
249 | int i, r; | |
250 | ||
251 | for (i = 1; i <= 8; i++) { | |
252 | if (sensor->interface == ET61X251_I2C_3WIRES) { | |
253 | r = et61x251_read_reg(cam, 0x8e); | |
254 | if (!(r & 0x02) && (r >= 0)) | |
255 | return 0; | |
256 | } else { | |
257 | r = et61x251_read_reg(cam, 0x8b); | |
258 | if (!(r & 0x01) && (r >= 0)) | |
259 | return 0; | |
260 | } | |
261 | if (r < 0) | |
262 | return -EIO; | |
263 | udelay(8*8); /* minimum for sensors at 400kHz */ | |
264 | } | |
265 | ||
266 | return -EBUSY; | |
267 | } | |
268 | ||
269 | ||
270 | int | |
271 | et61x251_i2c_try_read(struct et61x251_device* cam, | |
d56410e0 | 272 | struct et61x251_sensor* sensor, u8 address) |
7ce08c93 LR |
273 | { |
274 | struct usb_device* udev = cam->usbdev; | |
275 | u8* data = cam->control_buffer; | |
276 | int err = 0, res; | |
277 | ||
278 | data[0] = address; | |
ccad7789 LR |
279 | data[1] = cam->sensor.i2c_slave_id; |
280 | data[2] = cam->sensor.rsta | 0x10; | |
7ce08c93 LR |
281 | data[3] = !(et61x251_read_reg(cam, 0x8b) & 0x02); |
282 | res = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x00, 0x41, | |
d56410e0 | 283 | 0, 0x88, data, 4, ET61X251_CTRL_TIMEOUT); |
7ce08c93 LR |
284 | if (res < 0) |
285 | err += res; | |
286 | ||
287 | err += et61x251_i2c_wait(cam, sensor); | |
288 | ||
289 | res = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x00, 0xc1, | |
d56410e0 | 290 | 0, 0x80, data, 8, ET61X251_CTRL_TIMEOUT); |
7ce08c93 LR |
291 | if (res < 0) |
292 | err += res; | |
293 | ||
294 | if (err) | |
295 | DBG(3, "I2C read failed for %s image sensor", sensor->name); | |
296 | ||
297 | PDBGG("I2C read: address 0x%02X, value: 0x%02X", address, data[0]); | |
298 | ||
299 | return err ? -1 : (int)data[0]; | |
300 | } | |
301 | ||
302 | ||
303 | int | |
304 | et61x251_i2c_try_write(struct et61x251_device* cam, | |
d56410e0 | 305 | struct et61x251_sensor* sensor, u8 address, u8 value) |
7ce08c93 LR |
306 | { |
307 | struct usb_device* udev = cam->usbdev; | |
308 | u8* data = cam->control_buffer; | |
309 | int err = 0, res; | |
310 | ||
311 | data[0] = address; | |
ccad7789 LR |
312 | data[1] = cam->sensor.i2c_slave_id; |
313 | data[2] = cam->sensor.rsta | 0x12; | |
7ce08c93 | 314 | res = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x00, 0x41, |
d56410e0 | 315 | 0, 0x88, data, 3, ET61X251_CTRL_TIMEOUT); |
7ce08c93 LR |
316 | if (res < 0) |
317 | err += res; | |
318 | ||
319 | data[0] = value; | |
320 | res = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x00, 0x41, | |
d56410e0 | 321 | 0, 0x80, data, 1, ET61X251_CTRL_TIMEOUT); |
7ce08c93 LR |
322 | if (res < 0) |
323 | err += res; | |
324 | ||
325 | err += et61x251_i2c_wait(cam, sensor); | |
326 | ||
327 | if (err) | |
328 | DBG(3, "I2C write failed for %s image sensor", sensor->name); | |
329 | ||
330 | PDBGG("I2C write: address 0x%02X, value: 0x%02X", address, value); | |
331 | ||
332 | return err ? -1 : 0; | |
333 | } | |
334 | ||
335 | ||
336 | int | |
337 | et61x251_i2c_raw_write(struct et61x251_device* cam, u8 n, u8 data1, u8 data2, | |
d56410e0 MCC |
338 | u8 data3, u8 data4, u8 data5, u8 data6, u8 data7, |
339 | u8 data8, u8 address) | |
7ce08c93 LR |
340 | { |
341 | struct usb_device* udev = cam->usbdev; | |
342 | u8* data = cam->control_buffer; | |
343 | int err = 0, res; | |
344 | ||
7ce08c93 LR |
345 | data[0] = data2; |
346 | data[1] = data3; | |
347 | data[2] = data4; | |
348 | data[3] = data5; | |
349 | data[4] = data6; | |
350 | data[5] = data7; | |
351 | data[6] = data8; | |
352 | res = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x00, 0x41, | |
d56410e0 | 353 | 0, 0x81, data, n-1, ET61X251_CTRL_TIMEOUT); |
7ce08c93 LR |
354 | if (res < 0) |
355 | err += res; | |
356 | ||
357 | data[0] = address; | |
ccad7789 LR |
358 | data[1] = cam->sensor.i2c_slave_id; |
359 | data[2] = cam->sensor.rsta | 0x02 | (n << 4); | |
7ce08c93 | 360 | res = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x00, 0x41, |
d56410e0 | 361 | 0, 0x88, data, 3, ET61X251_CTRL_TIMEOUT); |
7ce08c93 LR |
362 | if (res < 0) |
363 | err += res; | |
364 | ||
365 | /* Start writing through the serial interface */ | |
366 | data[0] = data1; | |
367 | res = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x00, 0x41, | |
d56410e0 | 368 | 0, 0x80, data, 1, ET61X251_CTRL_TIMEOUT); |
7ce08c93 LR |
369 | if (res < 0) |
370 | err += res; | |
371 | ||
ccad7789 | 372 | err += et61x251_i2c_wait(cam, &cam->sensor); |
7ce08c93 LR |
373 | |
374 | if (err) | |
375 | DBG(3, "I2C raw write failed for %s image sensor", | |
ccad7789 | 376 | cam->sensor.name); |
7ce08c93 LR |
377 | |
378 | PDBGG("I2C raw write: %u bytes, address = 0x%02X, data1 = 0x%02X, " | |
379 | "data2 = 0x%02X, data3 = 0x%02X, data4 = 0x%02X, data5 = 0x%02X," | |
380 | " data6 = 0x%02X, data7 = 0x%02X, data8 = 0x%02X", n, address, | |
381 | data1, data2, data3, data4, data5, data6, data7, data8); | |
382 | ||
383 | return err ? -1 : 0; | |
384 | ||
385 | } | |
386 | ||
387 | ||
388 | int et61x251_i2c_read(struct et61x251_device* cam, u8 address) | |
389 | { | |
ccad7789 | 390 | return et61x251_i2c_try_read(cam, &cam->sensor, address); |
7ce08c93 LR |
391 | } |
392 | ||
393 | ||
394 | int et61x251_i2c_write(struct et61x251_device* cam, u8 address, u8 value) | |
395 | { | |
ccad7789 | 396 | return et61x251_i2c_try_write(cam, &cam->sensor, address, value); |
7ce08c93 LR |
397 | } |
398 | ||
399 | /*****************************************************************************/ | |
400 | ||
7d12e780 | 401 | static void et61x251_urb_complete(struct urb *urb) |
7ce08c93 LR |
402 | { |
403 | struct et61x251_device* cam = urb->context; | |
404 | struct et61x251_frame_t** f; | |
405 | size_t imagesize; | |
406 | u8 i; | |
407 | int err = 0; | |
408 | ||
409 | if (urb->status == -ENOENT) | |
410 | return; | |
411 | ||
412 | f = &cam->frame_current; | |
413 | ||
414 | if (cam->stream == STREAM_INTERRUPT) { | |
415 | cam->stream = STREAM_OFF; | |
416 | if ((*f)) | |
417 | (*f)->state = F_QUEUED; | |
418 | DBG(3, "Stream interrupted"); | |
ccad7789 | 419 | wake_up(&cam->wait_stream); |
7ce08c93 LR |
420 | } |
421 | ||
422 | if (cam->state & DEV_DISCONNECTED) | |
423 | return; | |
424 | ||
425 | if (cam->state & DEV_MISCONFIGURED) { | |
426 | wake_up_interruptible(&cam->wait_frame); | |
427 | return; | |
428 | } | |
429 | ||
430 | if (cam->stream == STREAM_OFF || list_empty(&cam->inqueue)) | |
431 | goto resubmit_urb; | |
432 | ||
433 | if (!(*f)) | |
434 | (*f) = list_entry(cam->inqueue.next, struct et61x251_frame_t, | |
d56410e0 | 435 | frame); |
7ce08c93 | 436 | |
ccad7789 | 437 | imagesize = (cam->sensor.pix_format.width * |
d56410e0 MCC |
438 | cam->sensor.pix_format.height * |
439 | cam->sensor.pix_format.priv) / 8; | |
7ce08c93 LR |
440 | |
441 | for (i = 0; i < urb->number_of_packets; i++) { | |
442 | unsigned int len, status; | |
443 | void *pos; | |
444 | u8* b1, * b2, sof; | |
445 | const u8 VOID_BYTES = 6; | |
446 | size_t imglen; | |
447 | ||
448 | len = urb->iso_frame_desc[i].actual_length; | |
449 | status = urb->iso_frame_desc[i].status; | |
450 | pos = urb->iso_frame_desc[i].offset + urb->transfer_buffer; | |
451 | ||
452 | if (status) { | |
453 | DBG(3, "Error in isochronous frame"); | |
454 | (*f)->state = F_ERROR; | |
455 | continue; | |
456 | } | |
457 | ||
458 | b1 = pos++; | |
459 | b2 = pos++; | |
460 | sof = ((*b1 & 0x3f) == 63); | |
461 | imglen = ((*b1 & 0xc0) << 2) | *b2; | |
462 | ||
463 | PDBGG("Isochrnous frame: length %u, #%u i, image length %zu", | |
464 | len, i, imglen); | |
465 | ||
466 | if ((*f)->state == F_QUEUED || (*f)->state == F_ERROR) | |
467 | start_of_frame: | |
468 | if (sof) { | |
469 | (*f)->state = F_GRABBING; | |
470 | (*f)->buf.bytesused = 0; | |
471 | do_gettimeofday(&(*f)->buf.timestamp); | |
472 | pos += 22; | |
473 | DBG(3, "SOF detected: new video frame"); | |
474 | } | |
475 | ||
476 | if ((*f)->state == F_GRABBING) { | |
477 | if (sof && (*f)->buf.bytesused) { | |
ccad7789 | 478 | if (cam->sensor.pix_format.pixelformat == |
d56410e0 | 479 | V4L2_PIX_FMT_ET61X251) |
7ce08c93 LR |
480 | goto end_of_frame; |
481 | else { | |
482 | DBG(3, "Not expected SOF detected " | |
483 | "after %lu bytes", | |
484 | (unsigned long)(*f)->buf.bytesused); | |
485 | (*f)->state = F_ERROR; | |
486 | continue; | |
487 | } | |
488 | } | |
489 | ||
490 | if ((*f)->buf.bytesused + imglen > imagesize) { | |
491 | DBG(3, "Video frame size exceeded"); | |
492 | (*f)->state = F_ERROR; | |
493 | continue; | |
494 | } | |
495 | ||
496 | pos += VOID_BYTES; | |
497 | ||
498 | memcpy((*f)->bufmem+(*f)->buf.bytesused, pos, imglen); | |
499 | (*f)->buf.bytesused += imglen; | |
500 | ||
501 | if ((*f)->buf.bytesused == imagesize) { | |
502 | u32 b; | |
503 | end_of_frame: | |
504 | b = (*f)->buf.bytesused; | |
505 | (*f)->state = F_DONE; | |
506 | (*f)->buf.sequence= ++cam->frame_count; | |
507 | spin_lock(&cam->queue_lock); | |
508 | list_move_tail(&(*f)->frame, &cam->outqueue); | |
509 | if (!list_empty(&cam->inqueue)) | |
510 | (*f) = list_entry(cam->inqueue.next, | |
d56410e0 MCC |
511 | struct et61x251_frame_t, |
512 | frame); | |
7ce08c93 LR |
513 | else |
514 | (*f) = NULL; | |
515 | spin_unlock(&cam->queue_lock); | |
516 | DBG(3, "Video frame captured: : %lu bytes", | |
517 | (unsigned long)(b)); | |
518 | ||
519 | if (!(*f)) | |
520 | goto resubmit_urb; | |
521 | ||
522 | if (sof && | |
ccad7789 | 523 | cam->sensor.pix_format.pixelformat == |
d56410e0 | 524 | V4L2_PIX_FMT_ET61X251) |
7ce08c93 LR |
525 | goto start_of_frame; |
526 | } | |
527 | } | |
528 | } | |
529 | ||
530 | resubmit_urb: | |
531 | urb->dev = cam->usbdev; | |
532 | err = usb_submit_urb(urb, GFP_ATOMIC); | |
533 | if (err < 0 && err != -EPERM) { | |
534 | cam->state |= DEV_MISCONFIGURED; | |
535 | DBG(1, "usb_submit_urb() failed"); | |
536 | } | |
537 | ||
538 | wake_up_interruptible(&cam->wait_frame); | |
539 | } | |
540 | ||
541 | ||
542 | static int et61x251_start_transfer(struct et61x251_device* cam) | |
543 | { | |
544 | struct usb_device *udev = cam->usbdev; | |
545 | struct urb* urb; | |
546 | const unsigned int wMaxPacketSize[] = {0, 256, 384, 512, 640, 768, 832, | |
d56410e0 MCC |
547 | 864, 896, 920, 956, 980, 1000, |
548 | 1022}; | |
7ce08c93 LR |
549 | const unsigned int psz = wMaxPacketSize[ET61X251_ALTERNATE_SETTING]; |
550 | s8 i, j; | |
551 | int err = 0; | |
552 | ||
553 | for (i = 0; i < ET61X251_URBS; i++) { | |
554 | cam->transfer_buffer[i] = kzalloc(ET61X251_ISO_PACKETS * psz, | |
d56410e0 | 555 | GFP_KERNEL); |
7ce08c93 LR |
556 | if (!cam->transfer_buffer[i]) { |
557 | err = -ENOMEM; | |
558 | DBG(1, "Not enough memory"); | |
559 | goto free_buffers; | |
560 | } | |
561 | } | |
562 | ||
563 | for (i = 0; i < ET61X251_URBS; i++) { | |
564 | urb = usb_alloc_urb(ET61X251_ISO_PACKETS, GFP_KERNEL); | |
565 | cam->urb[i] = urb; | |
566 | if (!urb) { | |
567 | err = -ENOMEM; | |
568 | DBG(1, "usb_alloc_urb() failed"); | |
569 | goto free_urbs; | |
570 | } | |
571 | urb->dev = udev; | |
572 | urb->context = cam; | |
573 | urb->pipe = usb_rcvisocpipe(udev, 1); | |
574 | urb->transfer_flags = URB_ISO_ASAP; | |
575 | urb->number_of_packets = ET61X251_ISO_PACKETS; | |
576 | urb->complete = et61x251_urb_complete; | |
577 | urb->transfer_buffer = cam->transfer_buffer[i]; | |
578 | urb->transfer_buffer_length = psz * ET61X251_ISO_PACKETS; | |
579 | urb->interval = 1; | |
580 | for (j = 0; j < ET61X251_ISO_PACKETS; j++) { | |
581 | urb->iso_frame_desc[j].offset = psz * j; | |
582 | urb->iso_frame_desc[j].length = psz; | |
583 | } | |
584 | } | |
585 | ||
586 | err = et61x251_write_reg(cam, 0x01, 0x03); | |
587 | err = et61x251_write_reg(cam, 0x00, 0x03); | |
588 | err = et61x251_write_reg(cam, 0x08, 0x03); | |
589 | if (err) { | |
590 | err = -EIO; | |
591 | DBG(1, "I/O hardware error"); | |
592 | goto free_urbs; | |
593 | } | |
594 | ||
595 | err = usb_set_interface(udev, 0, ET61X251_ALTERNATE_SETTING); | |
596 | if (err) { | |
597 | DBG(1, "usb_set_interface() failed"); | |
598 | goto free_urbs; | |
599 | } | |
600 | ||
601 | cam->frame_current = NULL; | |
602 | ||
603 | for (i = 0; i < ET61X251_URBS; i++) { | |
604 | err = usb_submit_urb(cam->urb[i], GFP_KERNEL); | |
605 | if (err) { | |
606 | for (j = i-1; j >= 0; j--) | |
607 | usb_kill_urb(cam->urb[j]); | |
608 | DBG(1, "usb_submit_urb() failed, error %d", err); | |
609 | goto free_urbs; | |
610 | } | |
611 | } | |
612 | ||
613 | return 0; | |
614 | ||
615 | free_urbs: | |
616 | for (i = 0; (i < ET61X251_URBS) && cam->urb[i]; i++) | |
617 | usb_free_urb(cam->urb[i]); | |
618 | ||
619 | free_buffers: | |
620 | for (i = 0; (i < ET61X251_URBS) && cam->transfer_buffer[i]; i++) | |
621 | kfree(cam->transfer_buffer[i]); | |
622 | ||
623 | return err; | |
624 | } | |
625 | ||
626 | ||
627 | static int et61x251_stop_transfer(struct et61x251_device* cam) | |
628 | { | |
629 | struct usb_device *udev = cam->usbdev; | |
630 | s8 i; | |
631 | int err = 0; | |
632 | ||
633 | if (cam->state & DEV_DISCONNECTED) | |
634 | return 0; | |
635 | ||
636 | for (i = ET61X251_URBS-1; i >= 0; i--) { | |
637 | usb_kill_urb(cam->urb[i]); | |
638 | usb_free_urb(cam->urb[i]); | |
639 | kfree(cam->transfer_buffer[i]); | |
640 | } | |
641 | ||
642 | err = usb_set_interface(udev, 0, 0); /* 0 Mb/s */ | |
643 | if (err) | |
644 | DBG(3, "usb_set_interface() failed"); | |
645 | ||
646 | return err; | |
647 | } | |
648 | ||
649 | ||
650 | static int et61x251_stream_interrupt(struct et61x251_device* cam) | |
651 | { | |
ccad7789 | 652 | long timeout; |
7ce08c93 LR |
653 | |
654 | cam->stream = STREAM_INTERRUPT; | |
ccad7789 | 655 | timeout = wait_event_timeout(cam->wait_stream, |
d56410e0 MCC |
656 | (cam->stream == STREAM_OFF) || |
657 | (cam->state & DEV_DISCONNECTED), | |
658 | ET61X251_URB_TIMEOUT); | |
7ce08c93 LR |
659 | if (cam->state & DEV_DISCONNECTED) |
660 | return -ENODEV; | |
ccad7789 | 661 | else if (cam->stream != STREAM_OFF) { |
7ce08c93 LR |
662 | cam->state |= DEV_MISCONFIGURED; |
663 | DBG(1, "URB timeout reached. The camera is misconfigured. To " | |
664 | "use it, close and open /dev/video%d again.", | |
665 | cam->v4ldev->minor); | |
ccad7789 | 666 | return -EIO; |
7ce08c93 LR |
667 | } |
668 | ||
669 | return 0; | |
670 | } | |
671 | ||
672 | /*****************************************************************************/ | |
673 | ||
674 | #ifdef CONFIG_VIDEO_ADV_DEBUG | |
675 | static u8 et61x251_strtou8(const char* buff, size_t len, ssize_t* count) | |
676 | { | |
677 | char str[5]; | |
678 | char* endp; | |
679 | unsigned long val; | |
680 | ||
681 | if (len < 4) { | |
682 | strncpy(str, buff, len); | |
683 | str[len+1] = '\0'; | |
684 | } else { | |
685 | strncpy(str, buff, 4); | |
686 | str[4] = '\0'; | |
687 | } | |
688 | ||
689 | val = simple_strtoul(str, &endp, 0); | |
690 | ||
691 | *count = 0; | |
692 | if (val <= 0xff) | |
693 | *count = (ssize_t)(endp - str); | |
694 | if ((*count) && (len == *count+1) && (buff[*count] == '\n')) | |
695 | *count += 1; | |
696 | ||
697 | return (u8)val; | |
698 | } | |
699 | ||
700 | /* | |
701 | NOTE 1: being inside one of the following methods implies that the v4l | |
d56410e0 | 702 | device exists for sure (see kobjects and reference counters) |
7ce08c93 LR |
703 | NOTE 2: buffers are PAGE_SIZE long |
704 | */ | |
705 | ||
706 | static ssize_t et61x251_show_reg(struct class_device* cd, char* buf) | |
707 | { | |
708 | struct et61x251_device* cam; | |
709 | ssize_t count; | |
710 | ||
ccad7789 | 711 | if (mutex_lock_interruptible(&et61x251_sysfs_lock)) |
7ce08c93 LR |
712 | return -ERESTARTSYS; |
713 | ||
714 | cam = video_get_drvdata(to_video_device(cd)); | |
715 | if (!cam) { | |
ccad7789 | 716 | mutex_unlock(&et61x251_sysfs_lock); |
7ce08c93 LR |
717 | return -ENODEV; |
718 | } | |
719 | ||
720 | count = sprintf(buf, "%u\n", cam->sysfs.reg); | |
721 | ||
ccad7789 | 722 | mutex_unlock(&et61x251_sysfs_lock); |
7ce08c93 LR |
723 | |
724 | return count; | |
725 | } | |
726 | ||
727 | ||
728 | static ssize_t | |
729 | et61x251_store_reg(struct class_device* cd, const char* buf, size_t len) | |
730 | { | |
731 | struct et61x251_device* cam; | |
732 | u8 index; | |
733 | ssize_t count; | |
734 | ||
ccad7789 | 735 | if (mutex_lock_interruptible(&et61x251_sysfs_lock)) |
7ce08c93 LR |
736 | return -ERESTARTSYS; |
737 | ||
738 | cam = video_get_drvdata(to_video_device(cd)); | |
739 | if (!cam) { | |
ccad7789 | 740 | mutex_unlock(&et61x251_sysfs_lock); |
7ce08c93 LR |
741 | return -ENODEV; |
742 | } | |
743 | ||
744 | index = et61x251_strtou8(buf, len, &count); | |
745 | if (index > 0x8e || !count) { | |
ccad7789 | 746 | mutex_unlock(&et61x251_sysfs_lock); |
7ce08c93 LR |
747 | return -EINVAL; |
748 | } | |
749 | ||
750 | cam->sysfs.reg = index; | |
751 | ||
752 | DBG(2, "Moved ET61X[12]51 register index to 0x%02X", cam->sysfs.reg); | |
753 | DBG(3, "Written bytes: %zd", count); | |
754 | ||
ccad7789 | 755 | mutex_unlock(&et61x251_sysfs_lock); |
7ce08c93 LR |
756 | |
757 | return count; | |
758 | } | |
759 | ||
760 | ||
761 | static ssize_t et61x251_show_val(struct class_device* cd, char* buf) | |
762 | { | |
763 | struct et61x251_device* cam; | |
764 | ssize_t count; | |
765 | int val; | |
766 | ||
ccad7789 | 767 | if (mutex_lock_interruptible(&et61x251_sysfs_lock)) |
7ce08c93 LR |
768 | return -ERESTARTSYS; |
769 | ||
770 | cam = video_get_drvdata(to_video_device(cd)); | |
771 | if (!cam) { | |
ccad7789 | 772 | mutex_unlock(&et61x251_sysfs_lock); |
7ce08c93 LR |
773 | return -ENODEV; |
774 | } | |
775 | ||
776 | if ((val = et61x251_read_reg(cam, cam->sysfs.reg)) < 0) { | |
ccad7789 | 777 | mutex_unlock(&et61x251_sysfs_lock); |
7ce08c93 LR |
778 | return -EIO; |
779 | } | |
780 | ||
781 | count = sprintf(buf, "%d\n", val); | |
782 | ||
783 | DBG(3, "Read bytes: %zd", count); | |
784 | ||
ccad7789 | 785 | mutex_unlock(&et61x251_sysfs_lock); |
7ce08c93 LR |
786 | |
787 | return count; | |
788 | } | |
789 | ||
790 | ||
791 | static ssize_t | |
792 | et61x251_store_val(struct class_device* cd, const char* buf, size_t len) | |
793 | { | |
794 | struct et61x251_device* cam; | |
795 | u8 value; | |
796 | ssize_t count; | |
797 | int err; | |
798 | ||
ccad7789 | 799 | if (mutex_lock_interruptible(&et61x251_sysfs_lock)) |
7ce08c93 LR |
800 | return -ERESTARTSYS; |
801 | ||
802 | cam = video_get_drvdata(to_video_device(cd)); | |
803 | if (!cam) { | |
ccad7789 | 804 | mutex_unlock(&et61x251_sysfs_lock); |
7ce08c93 LR |
805 | return -ENODEV; |
806 | } | |
807 | ||
808 | value = et61x251_strtou8(buf, len, &count); | |
809 | if (!count) { | |
ccad7789 | 810 | mutex_unlock(&et61x251_sysfs_lock); |
7ce08c93 LR |
811 | return -EINVAL; |
812 | } | |
813 | ||
814 | err = et61x251_write_reg(cam, value, cam->sysfs.reg); | |
815 | if (err) { | |
ccad7789 | 816 | mutex_unlock(&et61x251_sysfs_lock); |
7ce08c93 LR |
817 | return -EIO; |
818 | } | |
819 | ||
820 | DBG(2, "Written ET61X[12]51 reg. 0x%02X, val. 0x%02X", | |
821 | cam->sysfs.reg, value); | |
822 | DBG(3, "Written bytes: %zd", count); | |
823 | ||
ccad7789 | 824 | mutex_unlock(&et61x251_sysfs_lock); |
7ce08c93 LR |
825 | |
826 | return count; | |
827 | } | |
828 | ||
829 | ||
830 | static ssize_t et61x251_show_i2c_reg(struct class_device* cd, char* buf) | |
831 | { | |
832 | struct et61x251_device* cam; | |
833 | ssize_t count; | |
834 | ||
ccad7789 | 835 | if (mutex_lock_interruptible(&et61x251_sysfs_lock)) |
7ce08c93 LR |
836 | return -ERESTARTSYS; |
837 | ||
838 | cam = video_get_drvdata(to_video_device(cd)); | |
839 | if (!cam) { | |
ccad7789 | 840 | mutex_unlock(&et61x251_sysfs_lock); |
7ce08c93 LR |
841 | return -ENODEV; |
842 | } | |
843 | ||
844 | count = sprintf(buf, "%u\n", cam->sysfs.i2c_reg); | |
845 | ||
846 | DBG(3, "Read bytes: %zd", count); | |
847 | ||
ccad7789 | 848 | mutex_unlock(&et61x251_sysfs_lock); |
7ce08c93 LR |
849 | |
850 | return count; | |
851 | } | |
852 | ||
853 | ||
854 | static ssize_t | |
855 | et61x251_store_i2c_reg(struct class_device* cd, const char* buf, size_t len) | |
856 | { | |
857 | struct et61x251_device* cam; | |
858 | u8 index; | |
859 | ssize_t count; | |
860 | ||
ccad7789 | 861 | if (mutex_lock_interruptible(&et61x251_sysfs_lock)) |
7ce08c93 LR |
862 | return -ERESTARTSYS; |
863 | ||
864 | cam = video_get_drvdata(to_video_device(cd)); | |
865 | if (!cam) { | |
ccad7789 | 866 | mutex_unlock(&et61x251_sysfs_lock); |
7ce08c93 LR |
867 | return -ENODEV; |
868 | } | |
869 | ||
870 | index = et61x251_strtou8(buf, len, &count); | |
871 | if (!count) { | |
ccad7789 | 872 | mutex_unlock(&et61x251_sysfs_lock); |
7ce08c93 LR |
873 | return -EINVAL; |
874 | } | |
875 | ||
876 | cam->sysfs.i2c_reg = index; | |
877 | ||
878 | DBG(2, "Moved sensor register index to 0x%02X", cam->sysfs.i2c_reg); | |
879 | DBG(3, "Written bytes: %zd", count); | |
880 | ||
ccad7789 | 881 | mutex_unlock(&et61x251_sysfs_lock); |
7ce08c93 LR |
882 | |
883 | return count; | |
884 | } | |
885 | ||
886 | ||
887 | static ssize_t et61x251_show_i2c_val(struct class_device* cd, char* buf) | |
888 | { | |
889 | struct et61x251_device* cam; | |
890 | ssize_t count; | |
891 | int val; | |
892 | ||
ccad7789 | 893 | if (mutex_lock_interruptible(&et61x251_sysfs_lock)) |
7ce08c93 LR |
894 | return -ERESTARTSYS; |
895 | ||
896 | cam = video_get_drvdata(to_video_device(cd)); | |
897 | if (!cam) { | |
ccad7789 | 898 | mutex_unlock(&et61x251_sysfs_lock); |
7ce08c93 LR |
899 | return -ENODEV; |
900 | } | |
901 | ||
ccad7789 LR |
902 | if (!(cam->sensor.sysfs_ops & ET61X251_I2C_READ)) { |
903 | mutex_unlock(&et61x251_sysfs_lock); | |
7ce08c93 LR |
904 | return -ENOSYS; |
905 | } | |
906 | ||
907 | if ((val = et61x251_i2c_read(cam, cam->sysfs.i2c_reg)) < 0) { | |
ccad7789 | 908 | mutex_unlock(&et61x251_sysfs_lock); |
7ce08c93 LR |
909 | return -EIO; |
910 | } | |
911 | ||
912 | count = sprintf(buf, "%d\n", val); | |
913 | ||
914 | DBG(3, "Read bytes: %zd", count); | |
915 | ||
ccad7789 | 916 | mutex_unlock(&et61x251_sysfs_lock); |
7ce08c93 LR |
917 | |
918 | return count; | |
919 | } | |
920 | ||
921 | ||
922 | static ssize_t | |
923 | et61x251_store_i2c_val(struct class_device* cd, const char* buf, size_t len) | |
924 | { | |
925 | struct et61x251_device* cam; | |
926 | u8 value; | |
927 | ssize_t count; | |
928 | int err; | |
929 | ||
ccad7789 | 930 | if (mutex_lock_interruptible(&et61x251_sysfs_lock)) |
7ce08c93 LR |
931 | return -ERESTARTSYS; |
932 | ||
933 | cam = video_get_drvdata(to_video_device(cd)); | |
934 | if (!cam) { | |
ccad7789 | 935 | mutex_unlock(&et61x251_sysfs_lock); |
7ce08c93 LR |
936 | return -ENODEV; |
937 | } | |
938 | ||
ccad7789 LR |
939 | if (!(cam->sensor.sysfs_ops & ET61X251_I2C_READ)) { |
940 | mutex_unlock(&et61x251_sysfs_lock); | |
7ce08c93 LR |
941 | return -ENOSYS; |
942 | } | |
943 | ||
944 | value = et61x251_strtou8(buf, len, &count); | |
945 | if (!count) { | |
ccad7789 | 946 | mutex_unlock(&et61x251_sysfs_lock); |
7ce08c93 LR |
947 | return -EINVAL; |
948 | } | |
949 | ||
950 | err = et61x251_i2c_write(cam, cam->sysfs.i2c_reg, value); | |
951 | if (err) { | |
ccad7789 | 952 | mutex_unlock(&et61x251_sysfs_lock); |
7ce08c93 LR |
953 | return -EIO; |
954 | } | |
955 | ||
956 | DBG(2, "Written sensor reg. 0x%02X, val. 0x%02X", | |
957 | cam->sysfs.i2c_reg, value); | |
958 | DBG(3, "Written bytes: %zd", count); | |
959 | ||
ccad7789 | 960 | mutex_unlock(&et61x251_sysfs_lock); |
7ce08c93 LR |
961 | |
962 | return count; | |
963 | } | |
964 | ||
965 | ||
966 | static CLASS_DEVICE_ATTR(reg, S_IRUGO | S_IWUSR, | |
d56410e0 | 967 | et61x251_show_reg, et61x251_store_reg); |
7ce08c93 | 968 | static CLASS_DEVICE_ATTR(val, S_IRUGO | S_IWUSR, |
d56410e0 | 969 | et61x251_show_val, et61x251_store_val); |
7ce08c93 | 970 | static CLASS_DEVICE_ATTR(i2c_reg, S_IRUGO | S_IWUSR, |
d56410e0 | 971 | et61x251_show_i2c_reg, et61x251_store_i2c_reg); |
7ce08c93 | 972 | static CLASS_DEVICE_ATTR(i2c_val, S_IRUGO | S_IWUSR, |
d56410e0 | 973 | et61x251_show_i2c_val, et61x251_store_i2c_val); |
7ce08c93 LR |
974 | |
975 | ||
976 | static void et61x251_create_sysfs(struct et61x251_device* cam) | |
977 | { | |
978 | struct video_device *v4ldev = cam->v4ldev; | |
979 | ||
980 | video_device_create_file(v4ldev, &class_device_attr_reg); | |
981 | video_device_create_file(v4ldev, &class_device_attr_val); | |
ccad7789 | 982 | if (cam->sensor.sysfs_ops) { |
7ce08c93 LR |
983 | video_device_create_file(v4ldev, &class_device_attr_i2c_reg); |
984 | video_device_create_file(v4ldev, &class_device_attr_i2c_val); | |
985 | } | |
986 | } | |
987 | #endif /* CONFIG_VIDEO_ADV_DEBUG */ | |
988 | ||
989 | /*****************************************************************************/ | |
990 | ||
991 | static int | |
992 | et61x251_set_pix_format(struct et61x251_device* cam, | |
d56410e0 | 993 | struct v4l2_pix_format* pix) |
7ce08c93 LR |
994 | { |
995 | int r, err = 0; | |
996 | ||
997 | if ((r = et61x251_read_reg(cam, 0x12)) < 0) | |
998 | err += r; | |
999 | if (pix->pixelformat == V4L2_PIX_FMT_ET61X251) | |
1000 | err += et61x251_write_reg(cam, r & 0xfd, 0x12); | |
1001 | else | |
1002 | err += et61x251_write_reg(cam, r | 0x02, 0x12); | |
1003 | ||
1004 | return err ? -EIO : 0; | |
1005 | } | |
1006 | ||
1007 | ||
1008 | static int | |
1009 | et61x251_set_compression(struct et61x251_device* cam, | |
d56410e0 | 1010 | struct v4l2_jpegcompression* compression) |
7ce08c93 LR |
1011 | { |
1012 | int r, err = 0; | |
1013 | ||
1014 | if ((r = et61x251_read_reg(cam, 0x12)) < 0) | |
1015 | err += r; | |
1016 | if (compression->quality == 0) | |
1017 | err += et61x251_write_reg(cam, r & 0xfb, 0x12); | |
1018 | else | |
1019 | err += et61x251_write_reg(cam, r | 0x04, 0x12); | |
1020 | ||
1021 | return err ? -EIO : 0; | |
1022 | } | |
1023 | ||
1024 | ||
1025 | static int et61x251_set_scale(struct et61x251_device* cam, u8 scale) | |
1026 | { | |
1027 | int r = 0, err = 0; | |
1028 | ||
1029 | r = et61x251_read_reg(cam, 0x12); | |
1030 | if (r < 0) | |
1031 | err += r; | |
1032 | ||
1033 | if (scale == 1) | |
1034 | err += et61x251_write_reg(cam, r & ~0x01, 0x12); | |
1035 | else if (scale == 2) | |
1036 | err += et61x251_write_reg(cam, r | 0x01, 0x12); | |
1037 | ||
1038 | if (err) | |
1039 | return -EIO; | |
1040 | ||
1041 | PDBGG("Scaling factor: %u", scale); | |
1042 | ||
1043 | return 0; | |
1044 | } | |
1045 | ||
1046 | ||
1047 | static int | |
1048 | et61x251_set_crop(struct et61x251_device* cam, struct v4l2_rect* rect) | |
1049 | { | |
ccad7789 | 1050 | struct et61x251_sensor* s = &cam->sensor; |
7ce08c93 | 1051 | u16 fmw_sx = (u16)(rect->left - s->cropcap.bounds.left + |
d56410e0 | 1052 | s->active_pixel.left), |
7ce08c93 | 1053 | fmw_sy = (u16)(rect->top - s->cropcap.bounds.top + |
d56410e0 | 1054 | s->active_pixel.top), |
7ce08c93 LR |
1055 | fmw_length = (u16)(rect->width), |
1056 | fmw_height = (u16)(rect->height); | |
1057 | int err = 0; | |
1058 | ||
1059 | err += et61x251_write_reg(cam, fmw_sx & 0xff, 0x69); | |
1060 | err += et61x251_write_reg(cam, fmw_sy & 0xff, 0x6a); | |
1061 | err += et61x251_write_reg(cam, fmw_length & 0xff, 0x6b); | |
1062 | err += et61x251_write_reg(cam, fmw_height & 0xff, 0x6c); | |
1063 | err += et61x251_write_reg(cam, (fmw_sx >> 8) | ((fmw_sy & 0x300) >> 6) | |
d56410e0 MCC |
1064 | | ((fmw_length & 0x300) >> 4) |
1065 | | ((fmw_height & 0x300) >> 2), 0x6d); | |
7ce08c93 LR |
1066 | if (err) |
1067 | return -EIO; | |
1068 | ||
1069 | PDBGG("fmw_sx, fmw_sy, fmw_length, fmw_height: %u %u %u %u", | |
1070 | fmw_sx, fmw_sy, fmw_length, fmw_height); | |
1071 | ||
1072 | return 0; | |
1073 | } | |
1074 | ||
1075 | ||
1076 | static int et61x251_init(struct et61x251_device* cam) | |
1077 | { | |
ccad7789 | 1078 | struct et61x251_sensor* s = &cam->sensor; |
7ce08c93 LR |
1079 | struct v4l2_control ctrl; |
1080 | struct v4l2_queryctrl *qctrl; | |
1081 | struct v4l2_rect* rect; | |
1082 | u8 i = 0; | |
1083 | int err = 0; | |
1084 | ||
1085 | if (!(cam->state & DEV_INITIALIZED)) { | |
1086 | init_waitqueue_head(&cam->open); | |
1087 | qctrl = s->qctrl; | |
1088 | rect = &(s->cropcap.defrect); | |
1089 | cam->compression.quality = ET61X251_COMPRESSION_QUALITY; | |
1090 | } else { /* use current values */ | |
1091 | qctrl = s->_qctrl; | |
1092 | rect = &(s->_rect); | |
1093 | } | |
1094 | ||
1095 | err += et61x251_set_scale(cam, rect->width / s->pix_format.width); | |
1096 | err += et61x251_set_crop(cam, rect); | |
1097 | if (err) | |
1098 | return err; | |
1099 | ||
1100 | if (s->init) { | |
1101 | err = s->init(cam); | |
1102 | if (err) { | |
1103 | DBG(3, "Sensor initialization failed"); | |
1104 | return err; | |
1105 | } | |
1106 | } | |
1107 | ||
1108 | err += et61x251_set_compression(cam, &cam->compression); | |
1109 | err += et61x251_set_pix_format(cam, &s->pix_format); | |
1110 | if (s->set_pix_format) | |
1111 | err += s->set_pix_format(cam, &s->pix_format); | |
1112 | if (err) | |
1113 | return err; | |
1114 | ||
1115 | if (s->pix_format.pixelformat == V4L2_PIX_FMT_ET61X251) | |
1116 | DBG(3, "Compressed video format is active, quality %d", | |
1117 | cam->compression.quality); | |
1118 | else | |
1119 | DBG(3, "Uncompressed video format is active"); | |
1120 | ||
1121 | if (s->set_crop) | |
1122 | if ((err = s->set_crop(cam, rect))) { | |
1123 | DBG(3, "set_crop() failed"); | |
1124 | return err; | |
1125 | } | |
1126 | ||
1127 | if (s->set_ctrl) { | |
1128 | for (i = 0; i < ARRAY_SIZE(s->qctrl); i++) | |
1129 | if (s->qctrl[i].id != 0 && | |
1130 | !(s->qctrl[i].flags & V4L2_CTRL_FLAG_DISABLED)) { | |
1131 | ctrl.id = s->qctrl[i].id; | |
1132 | ctrl.value = qctrl[i].default_value; | |
1133 | err = s->set_ctrl(cam, &ctrl); | |
1134 | if (err) { | |
1135 | DBG(3, "Set %s control failed", | |
1136 | s->qctrl[i].name); | |
1137 | return err; | |
1138 | } | |
1139 | DBG(3, "Image sensor supports '%s' control", | |
1140 | s->qctrl[i].name); | |
1141 | } | |
1142 | } | |
1143 | ||
1144 | if (!(cam->state & DEV_INITIALIZED)) { | |
ccad7789 | 1145 | mutex_init(&cam->fileop_mutex); |
7ce08c93 LR |
1146 | spin_lock_init(&cam->queue_lock); |
1147 | init_waitqueue_head(&cam->wait_frame); | |
1148 | init_waitqueue_head(&cam->wait_stream); | |
1149 | cam->nreadbuffers = 2; | |
1150 | memcpy(s->_qctrl, s->qctrl, sizeof(s->qctrl)); | |
1151 | memcpy(&(s->_rect), &(s->cropcap.defrect), | |
1152 | sizeof(struct v4l2_rect)); | |
1153 | cam->state |= DEV_INITIALIZED; | |
1154 | } | |
1155 | ||
1156 | DBG(2, "Initialization succeeded"); | |
1157 | return 0; | |
1158 | } | |
1159 | ||
1160 | ||
1161 | static void et61x251_release_resources(struct et61x251_device* cam) | |
1162 | { | |
ccad7789 | 1163 | mutex_lock(&et61x251_sysfs_lock); |
7ce08c93 LR |
1164 | |
1165 | DBG(2, "V4L2 device /dev/video%d deregistered", cam->v4ldev->minor); | |
1166 | video_set_drvdata(cam->v4ldev, NULL); | |
1167 | video_unregister_device(cam->v4ldev); | |
1168 | ||
ccad7789 LR |
1169 | usb_put_dev(cam->usbdev); |
1170 | ||
1171 | mutex_unlock(&et61x251_sysfs_lock); | |
7ce08c93 LR |
1172 | |
1173 | kfree(cam->control_buffer); | |
1174 | } | |
1175 | ||
1176 | /*****************************************************************************/ | |
1177 | ||
1178 | static int et61x251_open(struct inode* inode, struct file* filp) | |
1179 | { | |
1180 | struct et61x251_device* cam; | |
1181 | int err = 0; | |
1182 | ||
1183 | /* | |
1184 | This is the only safe way to prevent race conditions with | |
1185 | disconnect | |
1186 | */ | |
1187 | if (!down_read_trylock(&et61x251_disconnect)) | |
1188 | return -ERESTARTSYS; | |
1189 | ||
1190 | cam = video_get_drvdata(video_devdata(filp)); | |
1191 | ||
ccad7789 | 1192 | if (mutex_lock_interruptible(&cam->dev_mutex)) { |
7ce08c93 LR |
1193 | up_read(&et61x251_disconnect); |
1194 | return -ERESTARTSYS; | |
1195 | } | |
1196 | ||
1197 | if (cam->users) { | |
1198 | DBG(2, "Device /dev/video%d is busy...", cam->v4ldev->minor); | |
1199 | if ((filp->f_flags & O_NONBLOCK) || | |
1200 | (filp->f_flags & O_NDELAY)) { | |
1201 | err = -EWOULDBLOCK; | |
1202 | goto out; | |
1203 | } | |
ccad7789 | 1204 | mutex_unlock(&cam->dev_mutex); |
7ce08c93 | 1205 | err = wait_event_interruptible_exclusive(cam->open, |
d56410e0 MCC |
1206 | cam->state & DEV_DISCONNECTED |
1207 | || !cam->users); | |
7ce08c93 LR |
1208 | if (err) { |
1209 | up_read(&et61x251_disconnect); | |
1210 | return err; | |
1211 | } | |
1212 | if (cam->state & DEV_DISCONNECTED) { | |
1213 | up_read(&et61x251_disconnect); | |
1214 | return -ENODEV; | |
1215 | } | |
ccad7789 | 1216 | mutex_lock(&cam->dev_mutex); |
7ce08c93 LR |
1217 | } |
1218 | ||
1219 | ||
1220 | if (cam->state & DEV_MISCONFIGURED) { | |
1221 | err = et61x251_init(cam); | |
1222 | if (err) { | |
1223 | DBG(1, "Initialization failed again. " | |
1224 | "I will retry on next open()."); | |
1225 | goto out; | |
1226 | } | |
1227 | cam->state &= ~DEV_MISCONFIGURED; | |
1228 | } | |
1229 | ||
1230 | if ((err = et61x251_start_transfer(cam))) | |
1231 | goto out; | |
1232 | ||
1233 | filp->private_data = cam; | |
1234 | cam->users++; | |
1235 | cam->io = IO_NONE; | |
1236 | cam->stream = STREAM_OFF; | |
1237 | cam->nbuffers = 0; | |
1238 | cam->frame_count = 0; | |
1239 | et61x251_empty_framequeues(cam); | |
1240 | ||
1241 | DBG(3, "Video device /dev/video%d is open", cam->v4ldev->minor); | |
1242 | ||
1243 | out: | |
ccad7789 | 1244 | mutex_unlock(&cam->dev_mutex); |
7ce08c93 LR |
1245 | up_read(&et61x251_disconnect); |
1246 | return err; | |
1247 | } | |
1248 | ||
1249 | ||
1250 | static int et61x251_release(struct inode* inode, struct file* filp) | |
1251 | { | |
1252 | struct et61x251_device* cam = video_get_drvdata(video_devdata(filp)); | |
1253 | ||
ccad7789 | 1254 | mutex_lock(&cam->dev_mutex); /* prevent disconnect() to be called */ |
7ce08c93 LR |
1255 | |
1256 | et61x251_stop_transfer(cam); | |
1257 | ||
1258 | et61x251_release_buffers(cam); | |
1259 | ||
1260 | if (cam->state & DEV_DISCONNECTED) { | |
1261 | et61x251_release_resources(cam); | |
ccad7789 | 1262 | mutex_unlock(&cam->dev_mutex); |
7ce08c93 LR |
1263 | kfree(cam); |
1264 | return 0; | |
1265 | } | |
1266 | ||
1267 | cam->users--; | |
1268 | wake_up_interruptible_nr(&cam->open, 1); | |
1269 | ||
1270 | DBG(3, "Video device /dev/video%d closed", cam->v4ldev->minor); | |
1271 | ||
ccad7789 | 1272 | mutex_unlock(&cam->dev_mutex); |
7ce08c93 LR |
1273 | |
1274 | return 0; | |
1275 | } | |
1276 | ||
1277 | ||
1278 | static ssize_t | |
1279 | et61x251_read(struct file* filp, char __user * buf, | |
d56410e0 | 1280 | size_t count, loff_t* f_pos) |
7ce08c93 LR |
1281 | { |
1282 | struct et61x251_device* cam = video_get_drvdata(video_devdata(filp)); | |
1283 | struct et61x251_frame_t* f, * i; | |
1284 | unsigned long lock_flags; | |
ccad7789 | 1285 | long timeout; |
7ce08c93 LR |
1286 | int err = 0; |
1287 | ||
ccad7789 | 1288 | if (mutex_lock_interruptible(&cam->fileop_mutex)) |
7ce08c93 LR |
1289 | return -ERESTARTSYS; |
1290 | ||
1291 | if (cam->state & DEV_DISCONNECTED) { | |
1292 | DBG(1, "Device not present"); | |
ccad7789 | 1293 | mutex_unlock(&cam->fileop_mutex); |
7ce08c93 LR |
1294 | return -ENODEV; |
1295 | } | |
1296 | ||
1297 | if (cam->state & DEV_MISCONFIGURED) { | |
1298 | DBG(1, "The camera is misconfigured. Close and open it " | |
1299 | "again."); | |
ccad7789 | 1300 | mutex_unlock(&cam->fileop_mutex); |
7ce08c93 LR |
1301 | return -EIO; |
1302 | } | |
1303 | ||
1304 | if (cam->io == IO_MMAP) { | |
1305 | DBG(3, "Close and open the device again to choose the read " | |
1306 | "method"); | |
ccad7789 | 1307 | mutex_unlock(&cam->fileop_mutex); |
7ce08c93 LR |
1308 | return -EINVAL; |
1309 | } | |
1310 | ||
1311 | if (cam->io == IO_NONE) { | |
1312 | if (!et61x251_request_buffers(cam, cam->nreadbuffers, | |
d56410e0 | 1313 | IO_READ)) { |
7ce08c93 | 1314 | DBG(1, "read() failed, not enough memory"); |
ccad7789 | 1315 | mutex_unlock(&cam->fileop_mutex); |
7ce08c93 LR |
1316 | return -ENOMEM; |
1317 | } | |
1318 | cam->io = IO_READ; | |
1319 | cam->stream = STREAM_ON; | |
1320 | } | |
1321 | ||
1322 | if (list_empty(&cam->inqueue)) { | |
1323 | if (!list_empty(&cam->outqueue)) | |
1324 | et61x251_empty_framequeues(cam); | |
1325 | et61x251_queue_unusedframes(cam); | |
1326 | } | |
1327 | ||
1328 | if (!count) { | |
ccad7789 | 1329 | mutex_unlock(&cam->fileop_mutex); |
7ce08c93 LR |
1330 | return 0; |
1331 | } | |
1332 | ||
1333 | if (list_empty(&cam->outqueue)) { | |
1334 | if (filp->f_flags & O_NONBLOCK) { | |
ccad7789 | 1335 | mutex_unlock(&cam->fileop_mutex); |
7ce08c93 LR |
1336 | return -EAGAIN; |
1337 | } | |
ccad7789 | 1338 | timeout = wait_event_interruptible_timeout |
d56410e0 MCC |
1339 | ( cam->wait_frame, |
1340 | (!list_empty(&cam->outqueue)) || | |
1341 | (cam->state & DEV_DISCONNECTED) || | |
1342 | (cam->state & DEV_MISCONFIGURED), | |
1343 | cam->module_param.frame_timeout * | |
1344 | 1000 * msecs_to_jiffies(1) ); | |
ccad7789 LR |
1345 | if (timeout < 0) { |
1346 | mutex_unlock(&cam->fileop_mutex); | |
1347 | return timeout; | |
7ce08c93 LR |
1348 | } |
1349 | if (cam->state & DEV_DISCONNECTED) { | |
ccad7789 | 1350 | mutex_unlock(&cam->fileop_mutex); |
7ce08c93 LR |
1351 | return -ENODEV; |
1352 | } | |
ccad7789 LR |
1353 | if (!timeout || (cam->state & DEV_MISCONFIGURED)) { |
1354 | mutex_unlock(&cam->fileop_mutex); | |
7ce08c93 LR |
1355 | return -EIO; |
1356 | } | |
1357 | } | |
1358 | ||
1359 | f = list_entry(cam->outqueue.prev, struct et61x251_frame_t, frame); | |
1360 | ||
1361 | if (count > f->buf.bytesused) | |
1362 | count = f->buf.bytesused; | |
1363 | ||
1364 | if (copy_to_user(buf, f->bufmem, count)) { | |
1365 | err = -EFAULT; | |
1366 | goto exit; | |
1367 | } | |
1368 | *f_pos += count; | |
1369 | ||
1370 | exit: | |
1371 | spin_lock_irqsave(&cam->queue_lock, lock_flags); | |
1372 | list_for_each_entry(i, &cam->outqueue, frame) | |
1373 | i->state = F_UNUSED; | |
1374 | INIT_LIST_HEAD(&cam->outqueue); | |
1375 | spin_unlock_irqrestore(&cam->queue_lock, lock_flags); | |
1376 | ||
1377 | et61x251_queue_unusedframes(cam); | |
1378 | ||
1379 | PDBGG("Frame #%lu, bytes read: %zu", | |
1380 | (unsigned long)f->buf.index, count); | |
1381 | ||
ccad7789 | 1382 | mutex_unlock(&cam->fileop_mutex); |
7ce08c93 LR |
1383 | |
1384 | return err ? err : count; | |
1385 | } | |
1386 | ||
1387 | ||
1388 | static unsigned int et61x251_poll(struct file *filp, poll_table *wait) | |
1389 | { | |
1390 | struct et61x251_device* cam = video_get_drvdata(video_devdata(filp)); | |
1391 | struct et61x251_frame_t* f; | |
1392 | unsigned long lock_flags; | |
1393 | unsigned int mask = 0; | |
1394 | ||
ccad7789 | 1395 | if (mutex_lock_interruptible(&cam->fileop_mutex)) |
7ce08c93 LR |
1396 | return POLLERR; |
1397 | ||
1398 | if (cam->state & DEV_DISCONNECTED) { | |
1399 | DBG(1, "Device not present"); | |
1400 | goto error; | |
1401 | } | |
1402 | ||
1403 | if (cam->state & DEV_MISCONFIGURED) { | |
1404 | DBG(1, "The camera is misconfigured. Close and open it " | |
1405 | "again."); | |
1406 | goto error; | |
1407 | } | |
1408 | ||
1409 | if (cam->io == IO_NONE) { | |
1410 | if (!et61x251_request_buffers(cam, cam->nreadbuffers, | |
d56410e0 | 1411 | IO_READ)) { |
7ce08c93 LR |
1412 | DBG(1, "poll() failed, not enough memory"); |
1413 | goto error; | |
1414 | } | |
1415 | cam->io = IO_READ; | |
1416 | cam->stream = STREAM_ON; | |
1417 | } | |
1418 | ||
1419 | if (cam->io == IO_READ) { | |
1420 | spin_lock_irqsave(&cam->queue_lock, lock_flags); | |
1421 | list_for_each_entry(f, &cam->outqueue, frame) | |
1422 | f->state = F_UNUSED; | |
1423 | INIT_LIST_HEAD(&cam->outqueue); | |
1424 | spin_unlock_irqrestore(&cam->queue_lock, lock_flags); | |
1425 | et61x251_queue_unusedframes(cam); | |
1426 | } | |
1427 | ||
1428 | poll_wait(filp, &cam->wait_frame, wait); | |
1429 | ||
1430 | if (!list_empty(&cam->outqueue)) | |
1431 | mask |= POLLIN | POLLRDNORM; | |
1432 | ||
ccad7789 | 1433 | mutex_unlock(&cam->fileop_mutex); |
7ce08c93 LR |
1434 | |
1435 | return mask; | |
1436 | ||
1437 | error: | |
ccad7789 | 1438 | mutex_unlock(&cam->fileop_mutex); |
7ce08c93 LR |
1439 | return POLLERR; |
1440 | } | |
1441 | ||
1442 | ||
1443 | static void et61x251_vm_open(struct vm_area_struct* vma) | |
1444 | { | |
1445 | struct et61x251_frame_t* f = vma->vm_private_data; | |
1446 | f->vma_use_count++; | |
1447 | } | |
1448 | ||
1449 | ||
1450 | static void et61x251_vm_close(struct vm_area_struct* vma) | |
1451 | { | |
1452 | /* NOTE: buffers are not freed here */ | |
1453 | struct et61x251_frame_t* f = vma->vm_private_data; | |
1454 | f->vma_use_count--; | |
1455 | } | |
1456 | ||
1457 | ||
1458 | static struct vm_operations_struct et61x251_vm_ops = { | |
1459 | .open = et61x251_vm_open, | |
1460 | .close = et61x251_vm_close, | |
1461 | }; | |
1462 | ||
1463 | ||
1464 | static int et61x251_mmap(struct file* filp, struct vm_area_struct *vma) | |
1465 | { | |
1466 | struct et61x251_device* cam = video_get_drvdata(video_devdata(filp)); | |
1467 | unsigned long size = vma->vm_end - vma->vm_start, | |
d56410e0 | 1468 | start = vma->vm_start; |
7ce08c93 LR |
1469 | void *pos; |
1470 | u32 i; | |
1471 | ||
ccad7789 | 1472 | if (mutex_lock_interruptible(&cam->fileop_mutex)) |
7ce08c93 LR |
1473 | return -ERESTARTSYS; |
1474 | ||
1475 | if (cam->state & DEV_DISCONNECTED) { | |
1476 | DBG(1, "Device not present"); | |
ccad7789 | 1477 | mutex_unlock(&cam->fileop_mutex); |
7ce08c93 LR |
1478 | return -ENODEV; |
1479 | } | |
1480 | ||
1481 | if (cam->state & DEV_MISCONFIGURED) { | |
1482 | DBG(1, "The camera is misconfigured. Close and open it " | |
1483 | "again."); | |
ccad7789 | 1484 | mutex_unlock(&cam->fileop_mutex); |
7ce08c93 LR |
1485 | return -EIO; |
1486 | } | |
1487 | ||
1488 | if (cam->io != IO_MMAP || !(vma->vm_flags & VM_WRITE) || | |
1489 | size != PAGE_ALIGN(cam->frame[0].buf.length)) { | |
ccad7789 | 1490 | mutex_unlock(&cam->fileop_mutex); |
7ce08c93 LR |
1491 | return -EINVAL; |
1492 | } | |
1493 | ||
1494 | for (i = 0; i < cam->nbuffers; i++) { | |
1495 | if ((cam->frame[i].buf.m.offset>>PAGE_SHIFT) == vma->vm_pgoff) | |
1496 | break; | |
1497 | } | |
1498 | if (i == cam->nbuffers) { | |
ccad7789 | 1499 | mutex_unlock(&cam->fileop_mutex); |
7ce08c93 LR |
1500 | return -EINVAL; |
1501 | } | |
1502 | ||
1503 | vma->vm_flags |= VM_IO; | |
1504 | vma->vm_flags |= VM_RESERVED; | |
1505 | ||
1506 | pos = cam->frame[i].bufmem; | |
1507 | while (size > 0) { /* size is page-aligned */ | |
1508 | if (vm_insert_page(vma, start, vmalloc_to_page(pos))) { | |
ccad7789 | 1509 | mutex_unlock(&cam->fileop_mutex); |
7ce08c93 LR |
1510 | return -EAGAIN; |
1511 | } | |
1512 | start += PAGE_SIZE; | |
1513 | pos += PAGE_SIZE; | |
1514 | size -= PAGE_SIZE; | |
1515 | } | |
1516 | ||
1517 | vma->vm_ops = &et61x251_vm_ops; | |
1518 | vma->vm_private_data = &cam->frame[i]; | |
1519 | ||
1520 | et61x251_vm_open(vma); | |
1521 | ||
ccad7789 | 1522 | mutex_unlock(&cam->fileop_mutex); |
7ce08c93 LR |
1523 | |
1524 | return 0; | |
1525 | } | |
1526 | ||
1527 | /*****************************************************************************/ | |
1528 | ||
1529 | static int | |
1530 | et61x251_vidioc_querycap(struct et61x251_device* cam, void __user * arg) | |
1531 | { | |
1532 | struct v4l2_capability cap = { | |
1533 | .driver = "et61x251", | |
1534 | .version = ET61X251_MODULE_VERSION_CODE, | |
1535 | .capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_READWRITE | | |
d56410e0 | 1536 | V4L2_CAP_STREAMING, |
7ce08c93 LR |
1537 | }; |
1538 | ||
1539 | strlcpy(cap.card, cam->v4ldev->name, sizeof(cap.card)); | |
1540 | if (usb_make_path(cam->usbdev, cap.bus_info, sizeof(cap.bus_info)) < 0) | |
1541 | strlcpy(cap.bus_info, cam->usbdev->dev.bus_id, | |
d56410e0 | 1542 | sizeof(cap.bus_info)); |
7ce08c93 LR |
1543 | |
1544 | if (copy_to_user(arg, &cap, sizeof(cap))) | |
1545 | return -EFAULT; | |
1546 | ||
1547 | return 0; | |
1548 | } | |
1549 | ||
1550 | ||
1551 | static int | |
1552 | et61x251_vidioc_enuminput(struct et61x251_device* cam, void __user * arg) | |
1553 | { | |
1554 | struct v4l2_input i; | |
1555 | ||
1556 | if (copy_from_user(&i, arg, sizeof(i))) | |
1557 | return -EFAULT; | |
1558 | ||
1559 | if (i.index) | |
1560 | return -EINVAL; | |
1561 | ||
1562 | memset(&i, 0, sizeof(i)); | |
1563 | strcpy(i.name, "Camera"); | |
ccad7789 | 1564 | i.type = V4L2_INPUT_TYPE_CAMERA; |
7ce08c93 LR |
1565 | |
1566 | if (copy_to_user(arg, &i, sizeof(i))) | |
1567 | return -EFAULT; | |
1568 | ||
1569 | return 0; | |
1570 | } | |
1571 | ||
1572 | ||
1573 | static int | |
ccad7789 LR |
1574 | et61x251_vidioc_g_input(struct et61x251_device* cam, void __user * arg) |
1575 | { | |
1576 | int index = 0; | |
1577 | ||
1578 | if (copy_to_user(arg, &index, sizeof(index))) | |
1579 | return -EFAULT; | |
1580 | ||
1581 | return 0; | |
1582 | } | |
1583 | ||
1584 | ||
1585 | static int | |
1586 | et61x251_vidioc_s_input(struct et61x251_device* cam, void __user * arg) | |
7ce08c93 LR |
1587 | { |
1588 | int index; | |
1589 | ||
1590 | if (copy_from_user(&index, arg, sizeof(index))) | |
1591 | return -EFAULT; | |
1592 | ||
1593 | if (index != 0) | |
1594 | return -EINVAL; | |
1595 | ||
1596 | return 0; | |
1597 | } | |
1598 | ||
1599 | ||
1600 | static int | |
1601 | et61x251_vidioc_query_ctrl(struct et61x251_device* cam, void __user * arg) | |
1602 | { | |
ccad7789 | 1603 | struct et61x251_sensor* s = &cam->sensor; |
7ce08c93 LR |
1604 | struct v4l2_queryctrl qc; |
1605 | u8 i; | |
1606 | ||
1607 | if (copy_from_user(&qc, arg, sizeof(qc))) | |
1608 | return -EFAULT; | |
1609 | ||
1610 | for (i = 0; i < ARRAY_SIZE(s->qctrl); i++) | |
1611 | if (qc.id && qc.id == s->qctrl[i].id) { | |
1612 | memcpy(&qc, &(s->qctrl[i]), sizeof(qc)); | |
1613 | if (copy_to_user(arg, &qc, sizeof(qc))) | |
1614 | return -EFAULT; | |
1615 | return 0; | |
1616 | } | |
1617 | ||
1618 | return -EINVAL; | |
1619 | } | |
1620 | ||
1621 | ||
1622 | static int | |
1623 | et61x251_vidioc_g_ctrl(struct et61x251_device* cam, void __user * arg) | |
1624 | { | |
ccad7789 | 1625 | struct et61x251_sensor* s = &cam->sensor; |
7ce08c93 LR |
1626 | struct v4l2_control ctrl; |
1627 | int err = 0; | |
1628 | u8 i; | |
1629 | ||
1630 | if (!s->get_ctrl && !s->set_ctrl) | |
1631 | return -EINVAL; | |
1632 | ||
1633 | if (copy_from_user(&ctrl, arg, sizeof(ctrl))) | |
1634 | return -EFAULT; | |
1635 | ||
1636 | if (!s->get_ctrl) { | |
1637 | for (i = 0; i < ARRAY_SIZE(s->qctrl); i++) | |
1638 | if (ctrl.id == s->qctrl[i].id) { | |
1639 | ctrl.value = s->_qctrl[i].default_value; | |
1640 | goto exit; | |
1641 | } | |
1642 | return -EINVAL; | |
1643 | } else | |
1644 | err = s->get_ctrl(cam, &ctrl); | |
1645 | ||
1646 | exit: | |
1647 | if (copy_to_user(arg, &ctrl, sizeof(ctrl))) | |
1648 | return -EFAULT; | |
1649 | ||
1650 | return err; | |
1651 | } | |
1652 | ||
1653 | ||
1654 | static int | |
1655 | et61x251_vidioc_s_ctrl(struct et61x251_device* cam, void __user * arg) | |
1656 | { | |
ccad7789 | 1657 | struct et61x251_sensor* s = &cam->sensor; |
7ce08c93 LR |
1658 | struct v4l2_control ctrl; |
1659 | u8 i; | |
1660 | int err = 0; | |
1661 | ||
1662 | if (!s->set_ctrl) | |
1663 | return -EINVAL; | |
1664 | ||
1665 | if (copy_from_user(&ctrl, arg, sizeof(ctrl))) | |
1666 | return -EFAULT; | |
1667 | ||
1668 | for (i = 0; i < ARRAY_SIZE(s->qctrl); i++) | |
1669 | if (ctrl.id == s->qctrl[i].id) { | |
ccad7789 LR |
1670 | if (s->qctrl[i].flags & V4L2_CTRL_FLAG_DISABLED) |
1671 | return -EINVAL; | |
7ce08c93 LR |
1672 | if (ctrl.value < s->qctrl[i].minimum || |
1673 | ctrl.value > s->qctrl[i].maximum) | |
1674 | return -ERANGE; | |
1675 | ctrl.value -= ctrl.value % s->qctrl[i].step; | |
1676 | break; | |
1677 | } | |
1678 | ||
1679 | if ((err = s->set_ctrl(cam, &ctrl))) | |
1680 | return err; | |
1681 | ||
1682 | s->_qctrl[i].default_value = ctrl.value; | |
1683 | ||
1684 | return 0; | |
1685 | } | |
1686 | ||
1687 | ||
1688 | static int | |
1689 | et61x251_vidioc_cropcap(struct et61x251_device* cam, void __user * arg) | |
1690 | { | |
ccad7789 | 1691 | struct v4l2_cropcap* cc = &(cam->sensor.cropcap); |
7ce08c93 LR |
1692 | |
1693 | cc->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
1694 | cc->pixelaspect.numerator = 1; | |
1695 | cc->pixelaspect.denominator = 1; | |
1696 | ||
1697 | if (copy_to_user(arg, cc, sizeof(*cc))) | |
1698 | return -EFAULT; | |
1699 | ||
1700 | return 0; | |
1701 | } | |
1702 | ||
1703 | ||
1704 | static int | |
1705 | et61x251_vidioc_g_crop(struct et61x251_device* cam, void __user * arg) | |
1706 | { | |
ccad7789 | 1707 | struct et61x251_sensor* s = &cam->sensor; |
7ce08c93 LR |
1708 | struct v4l2_crop crop = { |
1709 | .type = V4L2_BUF_TYPE_VIDEO_CAPTURE, | |
1710 | }; | |
1711 | ||
1712 | memcpy(&(crop.c), &(s->_rect), sizeof(struct v4l2_rect)); | |
1713 | ||
1714 | if (copy_to_user(arg, &crop, sizeof(crop))) | |
1715 | return -EFAULT; | |
1716 | ||
1717 | return 0; | |
1718 | } | |
1719 | ||
1720 | ||
1721 | static int | |
1722 | et61x251_vidioc_s_crop(struct et61x251_device* cam, void __user * arg) | |
1723 | { | |
ccad7789 | 1724 | struct et61x251_sensor* s = &cam->sensor; |
7ce08c93 LR |
1725 | struct v4l2_crop crop; |
1726 | struct v4l2_rect* rect; | |
1727 | struct v4l2_rect* bounds = &(s->cropcap.bounds); | |
1728 | struct v4l2_pix_format* pix_format = &(s->pix_format); | |
1729 | u8 scale; | |
1730 | const enum et61x251_stream_state stream = cam->stream; | |
1731 | const u32 nbuffers = cam->nbuffers; | |
1732 | u32 i; | |
1733 | int err = 0; | |
1734 | ||
1735 | if (copy_from_user(&crop, arg, sizeof(crop))) | |
1736 | return -EFAULT; | |
1737 | ||
1738 | rect = &(crop.c); | |
1739 | ||
1740 | if (crop.type != V4L2_BUF_TYPE_VIDEO_CAPTURE) | |
1741 | return -EINVAL; | |
1742 | ||
1743 | if (cam->module_param.force_munmap) | |
1744 | for (i = 0; i < cam->nbuffers; i++) | |
1745 | if (cam->frame[i].vma_use_count) { | |
1746 | DBG(3, "VIDIOC_S_CROP failed. " | |
1747 | "Unmap the buffers first."); | |
1748 | return -EINVAL; | |
1749 | } | |
1750 | ||
1751 | /* Preserve R,G or B origin */ | |
1752 | rect->left = (s->_rect.left & 1L) ? rect->left | 1L : rect->left & ~1L; | |
1753 | rect->top = (s->_rect.top & 1L) ? rect->top | 1L : rect->top & ~1L; | |
1754 | ||
1755 | if (rect->width < 4) | |
1756 | rect->width = 4; | |
1757 | if (rect->height < 4) | |
1758 | rect->height = 4; | |
1759 | if (rect->width > bounds->width) | |
1760 | rect->width = bounds->width; | |
1761 | if (rect->height > bounds->height) | |
1762 | rect->height = bounds->height; | |
1763 | if (rect->left < bounds->left) | |
1764 | rect->left = bounds->left; | |
1765 | if (rect->top < bounds->top) | |
1766 | rect->top = bounds->top; | |
1767 | if (rect->left + rect->width > bounds->left + bounds->width) | |
1768 | rect->left = bounds->left+bounds->width - rect->width; | |
1769 | if (rect->top + rect->height > bounds->top + bounds->height) | |
1770 | rect->top = bounds->top+bounds->height - rect->height; | |
1771 | ||
1772 | rect->width &= ~3L; | |
1773 | rect->height &= ~3L; | |
1774 | ||
1775 | if (ET61X251_PRESERVE_IMGSCALE) { | |
1776 | /* Calculate the actual scaling factor */ | |
1777 | u32 a, b; | |
1778 | a = rect->width * rect->height; | |
1779 | b = pix_format->width * pix_format->height; | |
1780 | scale = b ? (u8)((a / b) < 4 ? 1 : 2) : 1; | |
1781 | } else | |
1782 | scale = 1; | |
1783 | ||
1784 | if (cam->stream == STREAM_ON) | |
1785 | if ((err = et61x251_stream_interrupt(cam))) | |
1786 | return err; | |
1787 | ||
1788 | if (copy_to_user(arg, &crop, sizeof(crop))) { | |
1789 | cam->stream = stream; | |
1790 | return -EFAULT; | |
1791 | } | |
1792 | ||
1793 | if (cam->module_param.force_munmap || cam->io == IO_READ) | |
1794 | et61x251_release_buffers(cam); | |
1795 | ||
1796 | err = et61x251_set_crop(cam, rect); | |
1797 | if (s->set_crop) | |
1798 | err += s->set_crop(cam, rect); | |
1799 | err += et61x251_set_scale(cam, scale); | |
1800 | ||
1801 | if (err) { /* atomic, no rollback in ioctl() */ | |
1802 | cam->state |= DEV_MISCONFIGURED; | |
1803 | DBG(1, "VIDIOC_S_CROP failed because of hardware problems. To " | |
1804 | "use the camera, close and open /dev/video%d again.", | |
1805 | cam->v4ldev->minor); | |
1806 | return -EIO; | |
1807 | } | |
1808 | ||
1809 | s->pix_format.width = rect->width/scale; | |
1810 | s->pix_format.height = rect->height/scale; | |
1811 | memcpy(&(s->_rect), rect, sizeof(*rect)); | |
1812 | ||
1813 | if ((cam->module_param.force_munmap || cam->io == IO_READ) && | |
1814 | nbuffers != et61x251_request_buffers(cam, nbuffers, cam->io)) { | |
1815 | cam->state |= DEV_MISCONFIGURED; | |
1816 | DBG(1, "VIDIOC_S_CROP failed because of not enough memory. To " | |
1817 | "use the camera, close and open /dev/video%d again.", | |
1818 | cam->v4ldev->minor); | |
1819 | return -ENOMEM; | |
1820 | } | |
1821 | ||
1822 | if (cam->io == IO_READ) | |
1823 | et61x251_empty_framequeues(cam); | |
1824 | else if (cam->module_param.force_munmap) | |
1825 | et61x251_requeue_outqueue(cam); | |
1826 | ||
1827 | cam->stream = stream; | |
1828 | ||
1829 | return 0; | |
1830 | } | |
1831 | ||
1832 | ||
1833 | static int | |
1834 | et61x251_vidioc_enum_fmt(struct et61x251_device* cam, void __user * arg) | |
1835 | { | |
1836 | struct v4l2_fmtdesc fmtd; | |
1837 | ||
1838 | if (copy_from_user(&fmtd, arg, sizeof(fmtd))) | |
1839 | return -EFAULT; | |
1840 | ||
1841 | if (fmtd.index == 0) { | |
1842 | strcpy(fmtd.description, "bayer rgb"); | |
1843 | fmtd.pixelformat = V4L2_PIX_FMT_SBGGR8; | |
1844 | } else if (fmtd.index == 1) { | |
1845 | strcpy(fmtd.description, "compressed"); | |
1846 | fmtd.pixelformat = V4L2_PIX_FMT_ET61X251; | |
1847 | fmtd.flags = V4L2_FMT_FLAG_COMPRESSED; | |
1848 | } else | |
1849 | return -EINVAL; | |
1850 | ||
1851 | fmtd.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
1852 | memset(&fmtd.reserved, 0, sizeof(fmtd.reserved)); | |
1853 | ||
1854 | if (copy_to_user(arg, &fmtd, sizeof(fmtd))) | |
1855 | return -EFAULT; | |
1856 | ||
1857 | return 0; | |
1858 | } | |
1859 | ||
1860 | ||
1861 | static int | |
1862 | et61x251_vidioc_g_fmt(struct et61x251_device* cam, void __user * arg) | |
1863 | { | |
1864 | struct v4l2_format format; | |
ccad7789 | 1865 | struct v4l2_pix_format* pfmt = &(cam->sensor.pix_format); |
7ce08c93 LR |
1866 | |
1867 | if (copy_from_user(&format, arg, sizeof(format))) | |
1868 | return -EFAULT; | |
1869 | ||
1870 | if (format.type != V4L2_BUF_TYPE_VIDEO_CAPTURE) | |
1871 | return -EINVAL; | |
1872 | ||
1873 | pfmt->bytesperline = (pfmt->pixelformat==V4L2_PIX_FMT_ET61X251) | |
d56410e0 | 1874 | ? 0 : (pfmt->width * pfmt->priv) / 8; |
7ce08c93 LR |
1875 | pfmt->sizeimage = pfmt->height * ((pfmt->width*pfmt->priv)/8); |
1876 | pfmt->field = V4L2_FIELD_NONE; | |
1877 | memcpy(&(format.fmt.pix), pfmt, sizeof(*pfmt)); | |
1878 | ||
1879 | if (copy_to_user(arg, &format, sizeof(format))) | |
1880 | return -EFAULT; | |
1881 | ||
1882 | return 0; | |
1883 | } | |
1884 | ||
1885 | ||
1886 | static int | |
1887 | et61x251_vidioc_try_s_fmt(struct et61x251_device* cam, unsigned int cmd, | |
d56410e0 | 1888 | void __user * arg) |
7ce08c93 | 1889 | { |
ccad7789 | 1890 | struct et61x251_sensor* s = &cam->sensor; |
7ce08c93 LR |
1891 | struct v4l2_format format; |
1892 | struct v4l2_pix_format* pix; | |
1893 | struct v4l2_pix_format* pfmt = &(s->pix_format); | |
1894 | struct v4l2_rect* bounds = &(s->cropcap.bounds); | |
1895 | struct v4l2_rect rect; | |
1896 | u8 scale; | |
1897 | const enum et61x251_stream_state stream = cam->stream; | |
1898 | const u32 nbuffers = cam->nbuffers; | |
1899 | u32 i; | |
1900 | int err = 0; | |
1901 | ||
1902 | if (copy_from_user(&format, arg, sizeof(format))) | |
1903 | return -EFAULT; | |
1904 | ||
1905 | pix = &(format.fmt.pix); | |
1906 | ||
1907 | if (format.type != V4L2_BUF_TYPE_VIDEO_CAPTURE) | |
1908 | return -EINVAL; | |
1909 | ||
1910 | memcpy(&rect, &(s->_rect), sizeof(rect)); | |
1911 | ||
1912 | { /* calculate the actual scaling factor */ | |
1913 | u32 a, b; | |
1914 | a = rect.width * rect.height; | |
1915 | b = pix->width * pix->height; | |
1916 | scale = b ? (u8)((a / b) < 4 ? 1 : 2) : 1; | |
1917 | } | |
1918 | ||
1919 | rect.width = scale * pix->width; | |
1920 | rect.height = scale * pix->height; | |
1921 | ||
1922 | if (rect.width < 4) | |
1923 | rect.width = 4; | |
1924 | if (rect.height < 4) | |
1925 | rect.height = 4; | |
1926 | if (rect.width > bounds->left + bounds->width - rect.left) | |
1927 | rect.width = bounds->left + bounds->width - rect.left; | |
1928 | if (rect.height > bounds->top + bounds->height - rect.top) | |
1929 | rect.height = bounds->top + bounds->height - rect.top; | |
1930 | ||
1931 | rect.width &= ~3L; | |
1932 | rect.height &= ~3L; | |
1933 | ||
1934 | { /* adjust the scaling factor */ | |
1935 | u32 a, b; | |
1936 | a = rect.width * rect.height; | |
1937 | b = pix->width * pix->height; | |
1938 | scale = b ? (u8)((a / b) < 4 ? 1 : 2) : 1; | |
1939 | } | |
1940 | ||
1941 | pix->width = rect.width / scale; | |
1942 | pix->height = rect.height / scale; | |
1943 | ||
1944 | if (pix->pixelformat != V4L2_PIX_FMT_ET61X251 && | |
1945 | pix->pixelformat != V4L2_PIX_FMT_SBGGR8) | |
1946 | pix->pixelformat = pfmt->pixelformat; | |
1947 | pix->priv = pfmt->priv; /* bpp */ | |
1948 | pix->colorspace = pfmt->colorspace; | |
1949 | pix->bytesperline = (pix->pixelformat == V4L2_PIX_FMT_ET61X251) | |
d56410e0 | 1950 | ? 0 : (pix->width * pix->priv) / 8; |
7ce08c93 LR |
1951 | pix->sizeimage = pix->height * ((pix->width * pix->priv) / 8); |
1952 | pix->field = V4L2_FIELD_NONE; | |
1953 | ||
1954 | if (cmd == VIDIOC_TRY_FMT) { | |
1955 | if (copy_to_user(arg, &format, sizeof(format))) | |
1956 | return -EFAULT; | |
1957 | return 0; | |
1958 | } | |
1959 | ||
1960 | if (cam->module_param.force_munmap) | |
1961 | for (i = 0; i < cam->nbuffers; i++) | |
1962 | if (cam->frame[i].vma_use_count) { | |
1963 | DBG(3, "VIDIOC_S_FMT failed. " | |
1964 | "Unmap the buffers first."); | |
1965 | return -EINVAL; | |
1966 | } | |
1967 | ||
1968 | if (cam->stream == STREAM_ON) | |
1969 | if ((err = et61x251_stream_interrupt(cam))) | |
1970 | return err; | |
1971 | ||
1972 | if (copy_to_user(arg, &format, sizeof(format))) { | |
1973 | cam->stream = stream; | |
1974 | return -EFAULT; | |
1975 | } | |
1976 | ||
1977 | if (cam->module_param.force_munmap || cam->io == IO_READ) | |
1978 | et61x251_release_buffers(cam); | |
1979 | ||
1980 | err += et61x251_set_pix_format(cam, pix); | |
1981 | err += et61x251_set_crop(cam, &rect); | |
1982 | if (s->set_pix_format) | |
1983 | err += s->set_pix_format(cam, pix); | |
1984 | if (s->set_crop) | |
1985 | err += s->set_crop(cam, &rect); | |
1986 | err += et61x251_set_scale(cam, scale); | |
1987 | ||
1988 | if (err) { /* atomic, no rollback in ioctl() */ | |
1989 | cam->state |= DEV_MISCONFIGURED; | |
1990 | DBG(1, "VIDIOC_S_FMT failed because of hardware problems. To " | |
1991 | "use the camera, close and open /dev/video%d again.", | |
1992 | cam->v4ldev->minor); | |
1993 | return -EIO; | |
1994 | } | |
1995 | ||
1996 | memcpy(pfmt, pix, sizeof(*pix)); | |
1997 | memcpy(&(s->_rect), &rect, sizeof(rect)); | |
1998 | ||
1999 | if ((cam->module_param.force_munmap || cam->io == IO_READ) && | |
2000 | nbuffers != et61x251_request_buffers(cam, nbuffers, cam->io)) { | |
2001 | cam->state |= DEV_MISCONFIGURED; | |
2002 | DBG(1, "VIDIOC_S_FMT failed because of not enough memory. To " | |
2003 | "use the camera, close and open /dev/video%d again.", | |
2004 | cam->v4ldev->minor); | |
2005 | return -ENOMEM; | |
2006 | } | |
2007 | ||
2008 | if (cam->io == IO_READ) | |
2009 | et61x251_empty_framequeues(cam); | |
2010 | else if (cam->module_param.force_munmap) | |
2011 | et61x251_requeue_outqueue(cam); | |
2012 | ||
2013 | cam->stream = stream; | |
2014 | ||
2015 | return 0; | |
2016 | } | |
2017 | ||
2018 | ||
2019 | static int | |
2020 | et61x251_vidioc_g_jpegcomp(struct et61x251_device* cam, void __user * arg) | |
2021 | { | |
2022 | if (copy_to_user(arg, &cam->compression, | |
d56410e0 | 2023 | sizeof(cam->compression))) |
7ce08c93 LR |
2024 | return -EFAULT; |
2025 | ||
2026 | return 0; | |
2027 | } | |
2028 | ||
2029 | ||
2030 | static int | |
2031 | et61x251_vidioc_s_jpegcomp(struct et61x251_device* cam, void __user * arg) | |
2032 | { | |
2033 | struct v4l2_jpegcompression jc; | |
2034 | const enum et61x251_stream_state stream = cam->stream; | |
2035 | int err = 0; | |
2036 | ||
2037 | if (copy_from_user(&jc, arg, sizeof(jc))) | |
2038 | return -EFAULT; | |
2039 | ||
2040 | if (jc.quality != 0 && jc.quality != 1) | |
2041 | return -EINVAL; | |
2042 | ||
2043 | if (cam->stream == STREAM_ON) | |
2044 | if ((err = et61x251_stream_interrupt(cam))) | |
2045 | return err; | |
2046 | ||
2047 | err += et61x251_set_compression(cam, &jc); | |
2048 | if (err) { /* atomic, no rollback in ioctl() */ | |
2049 | cam->state |= DEV_MISCONFIGURED; | |
2050 | DBG(1, "VIDIOC_S_JPEGCOMP failed because of hardware " | |
2051 | "problems. To use the camera, close and open " | |
2052 | "/dev/video%d again.", cam->v4ldev->minor); | |
2053 | return -EIO; | |
2054 | } | |
2055 | ||
2056 | cam->compression.quality = jc.quality; | |
2057 | ||
2058 | cam->stream = stream; | |
2059 | ||
2060 | return 0; | |
2061 | } | |
2062 | ||
2063 | ||
2064 | static int | |
2065 | et61x251_vidioc_reqbufs(struct et61x251_device* cam, void __user * arg) | |
2066 | { | |
2067 | struct v4l2_requestbuffers rb; | |
2068 | u32 i; | |
2069 | int err; | |
2070 | ||
2071 | if (copy_from_user(&rb, arg, sizeof(rb))) | |
2072 | return -EFAULT; | |
2073 | ||
2074 | if (rb.type != V4L2_BUF_TYPE_VIDEO_CAPTURE || | |
2075 | rb.memory != V4L2_MEMORY_MMAP) | |
2076 | return -EINVAL; | |
2077 | ||
2078 | if (cam->io == IO_READ) { | |
2079 | DBG(3, "Close and open the device again to choose the mmap " | |
2080 | "I/O method"); | |
2081 | return -EINVAL; | |
2082 | } | |
2083 | ||
2084 | for (i = 0; i < cam->nbuffers; i++) | |
2085 | if (cam->frame[i].vma_use_count) { | |
2086 | DBG(3, "VIDIOC_REQBUFS failed. " | |
2087 | "Previous buffers are still mapped."); | |
2088 | return -EINVAL; | |
2089 | } | |
2090 | ||
2091 | if (cam->stream == STREAM_ON) | |
2092 | if ((err = et61x251_stream_interrupt(cam))) | |
2093 | return err; | |
2094 | ||
2095 | et61x251_empty_framequeues(cam); | |
2096 | ||
2097 | et61x251_release_buffers(cam); | |
2098 | if (rb.count) | |
2099 | rb.count = et61x251_request_buffers(cam, rb.count, IO_MMAP); | |
2100 | ||
2101 | if (copy_to_user(arg, &rb, sizeof(rb))) { | |
2102 | et61x251_release_buffers(cam); | |
2103 | cam->io = IO_NONE; | |
2104 | return -EFAULT; | |
2105 | } | |
2106 | ||
2107 | cam->io = rb.count ? IO_MMAP : IO_NONE; | |
2108 | ||
2109 | return 0; | |
2110 | } | |
2111 | ||
2112 | ||
2113 | static int | |
2114 | et61x251_vidioc_querybuf(struct et61x251_device* cam, void __user * arg) | |
2115 | { | |
2116 | struct v4l2_buffer b; | |
2117 | ||
2118 | if (copy_from_user(&b, arg, sizeof(b))) | |
2119 | return -EFAULT; | |
2120 | ||
2121 | if (b.type != V4L2_BUF_TYPE_VIDEO_CAPTURE || | |
2122 | b.index >= cam->nbuffers || cam->io != IO_MMAP) | |
2123 | return -EINVAL; | |
2124 | ||
2125 | memcpy(&b, &cam->frame[b.index].buf, sizeof(b)); | |
2126 | ||
2127 | if (cam->frame[b.index].vma_use_count) | |
2128 | b.flags |= V4L2_BUF_FLAG_MAPPED; | |
2129 | ||
2130 | if (cam->frame[b.index].state == F_DONE) | |
2131 | b.flags |= V4L2_BUF_FLAG_DONE; | |
2132 | else if (cam->frame[b.index].state != F_UNUSED) | |
2133 | b.flags |= V4L2_BUF_FLAG_QUEUED; | |
2134 | ||
2135 | if (copy_to_user(arg, &b, sizeof(b))) | |
2136 | return -EFAULT; | |
2137 | ||
2138 | return 0; | |
2139 | } | |
2140 | ||
2141 | ||
2142 | static int | |
2143 | et61x251_vidioc_qbuf(struct et61x251_device* cam, void __user * arg) | |
2144 | { | |
2145 | struct v4l2_buffer b; | |
2146 | unsigned long lock_flags; | |
2147 | ||
2148 | if (copy_from_user(&b, arg, sizeof(b))) | |
2149 | return -EFAULT; | |
2150 | ||
2151 | if (b.type != V4L2_BUF_TYPE_VIDEO_CAPTURE || | |
2152 | b.index >= cam->nbuffers || cam->io != IO_MMAP) | |
2153 | return -EINVAL; | |
2154 | ||
2155 | if (cam->frame[b.index].state != F_UNUSED) | |
2156 | return -EINVAL; | |
2157 | ||
2158 | cam->frame[b.index].state = F_QUEUED; | |
2159 | ||
2160 | spin_lock_irqsave(&cam->queue_lock, lock_flags); | |
2161 | list_add_tail(&cam->frame[b.index].frame, &cam->inqueue); | |
2162 | spin_unlock_irqrestore(&cam->queue_lock, lock_flags); | |
2163 | ||
2164 | PDBGG("Frame #%lu queued", (unsigned long)b.index); | |
2165 | ||
2166 | return 0; | |
2167 | } | |
2168 | ||
2169 | ||
2170 | static int | |
2171 | et61x251_vidioc_dqbuf(struct et61x251_device* cam, struct file* filp, | |
d56410e0 | 2172 | void __user * arg) |
7ce08c93 LR |
2173 | { |
2174 | struct v4l2_buffer b; | |
2175 | struct et61x251_frame_t *f; | |
2176 | unsigned long lock_flags; | |
ccad7789 | 2177 | long timeout; |
7ce08c93 LR |
2178 | |
2179 | if (copy_from_user(&b, arg, sizeof(b))) | |
2180 | return -EFAULT; | |
2181 | ||
2182 | if (b.type != V4L2_BUF_TYPE_VIDEO_CAPTURE || cam->io!= IO_MMAP) | |
2183 | return -EINVAL; | |
2184 | ||
2185 | if (list_empty(&cam->outqueue)) { | |
2186 | if (cam->stream == STREAM_OFF) | |
2187 | return -EINVAL; | |
2188 | if (filp->f_flags & O_NONBLOCK) | |
2189 | return -EAGAIN; | |
ccad7789 | 2190 | timeout = wait_event_interruptible_timeout |
d56410e0 MCC |
2191 | ( cam->wait_frame, |
2192 | (!list_empty(&cam->outqueue)) || | |
2193 | (cam->state & DEV_DISCONNECTED) || | |
2194 | (cam->state & DEV_MISCONFIGURED), | |
2195 | cam->module_param.frame_timeout * | |
2196 | 1000 * msecs_to_jiffies(1) ); | |
ccad7789 LR |
2197 | if (timeout < 0) |
2198 | return timeout; | |
7ce08c93 LR |
2199 | if (cam->state & DEV_DISCONNECTED) |
2200 | return -ENODEV; | |
ccad7789 | 2201 | if (!timeout || (cam->state & DEV_MISCONFIGURED)) |
7ce08c93 LR |
2202 | return -EIO; |
2203 | } | |
2204 | ||
2205 | spin_lock_irqsave(&cam->queue_lock, lock_flags); | |
2206 | f = list_entry(cam->outqueue.next, struct et61x251_frame_t, frame); | |
2207 | list_del(cam->outqueue.next); | |
2208 | spin_unlock_irqrestore(&cam->queue_lock, lock_flags); | |
2209 | ||
2210 | f->state = F_UNUSED; | |
2211 | ||
2212 | memcpy(&b, &f->buf, sizeof(b)); | |
2213 | if (f->vma_use_count) | |
2214 | b.flags |= V4L2_BUF_FLAG_MAPPED; | |
2215 | ||
2216 | if (copy_to_user(arg, &b, sizeof(b))) | |
2217 | return -EFAULT; | |
2218 | ||
2219 | PDBGG("Frame #%lu dequeued", (unsigned long)f->buf.index); | |
2220 | ||
2221 | return 0; | |
2222 | } | |
2223 | ||
2224 | ||
2225 | static int | |
2226 | et61x251_vidioc_streamon(struct et61x251_device* cam, void __user * arg) | |
2227 | { | |
2228 | int type; | |
2229 | ||
2230 | if (copy_from_user(&type, arg, sizeof(type))) | |
2231 | return -EFAULT; | |
2232 | ||
2233 | if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE || cam->io != IO_MMAP) | |
2234 | return -EINVAL; | |
2235 | ||
2236 | if (list_empty(&cam->inqueue)) | |
2237 | return -EINVAL; | |
2238 | ||
2239 | cam->stream = STREAM_ON; | |
2240 | ||
2241 | DBG(3, "Stream on"); | |
2242 | ||
2243 | return 0; | |
2244 | } | |
2245 | ||
2246 | ||
2247 | static int | |
2248 | et61x251_vidioc_streamoff(struct et61x251_device* cam, void __user * arg) | |
2249 | { | |
2250 | int type, err; | |
2251 | ||
2252 | if (copy_from_user(&type, arg, sizeof(type))) | |
2253 | return -EFAULT; | |
2254 | ||
2255 | if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE || cam->io != IO_MMAP) | |
2256 | return -EINVAL; | |
2257 | ||
2258 | if (cam->stream == STREAM_ON) | |
2259 | if ((err = et61x251_stream_interrupt(cam))) | |
2260 | return err; | |
2261 | ||
2262 | et61x251_empty_framequeues(cam); | |
2263 | ||
2264 | DBG(3, "Stream off"); | |
2265 | ||
2266 | return 0; | |
2267 | } | |
2268 | ||
2269 | ||
2270 | static int | |
2271 | et61x251_vidioc_g_parm(struct et61x251_device* cam, void __user * arg) | |
2272 | { | |
2273 | struct v4l2_streamparm sp; | |
2274 | ||
2275 | if (copy_from_user(&sp, arg, sizeof(sp))) | |
2276 | return -EFAULT; | |
2277 | ||
2278 | if (sp.type != V4L2_BUF_TYPE_VIDEO_CAPTURE) | |
2279 | return -EINVAL; | |
2280 | ||
2281 | sp.parm.capture.extendedmode = 0; | |
2282 | sp.parm.capture.readbuffers = cam->nreadbuffers; | |
2283 | ||
2284 | if (copy_to_user(arg, &sp, sizeof(sp))) | |
2285 | return -EFAULT; | |
2286 | ||
2287 | return 0; | |
2288 | } | |
2289 | ||
2290 | ||
2291 | static int | |
2292 | et61x251_vidioc_s_parm(struct et61x251_device* cam, void __user * arg) | |
2293 | { | |
2294 | struct v4l2_streamparm sp; | |
2295 | ||
2296 | if (copy_from_user(&sp, arg, sizeof(sp))) | |
2297 | return -EFAULT; | |
2298 | ||
2299 | if (sp.type != V4L2_BUF_TYPE_VIDEO_CAPTURE) | |
2300 | return -EINVAL; | |
2301 | ||
2302 | sp.parm.capture.extendedmode = 0; | |
2303 | ||
2304 | if (sp.parm.capture.readbuffers == 0) | |
2305 | sp.parm.capture.readbuffers = cam->nreadbuffers; | |
2306 | ||
2307 | if (sp.parm.capture.readbuffers > ET61X251_MAX_FRAMES) | |
2308 | sp.parm.capture.readbuffers = ET61X251_MAX_FRAMES; | |
2309 | ||
2310 | if (copy_to_user(arg, &sp, sizeof(sp))) | |
2311 | return -EFAULT; | |
2312 | ||
2313 | cam->nreadbuffers = sp.parm.capture.readbuffers; | |
2314 | ||
2315 | return 0; | |
2316 | } | |
2317 | ||
2318 | ||
2319 | static int et61x251_ioctl_v4l2(struct inode* inode, struct file* filp, | |
d56410e0 | 2320 | unsigned int cmd, void __user * arg) |
7ce08c93 LR |
2321 | { |
2322 | struct et61x251_device* cam = video_get_drvdata(video_devdata(filp)); | |
2323 | ||
2324 | switch (cmd) { | |
2325 | ||
2326 | case VIDIOC_QUERYCAP: | |
2327 | return et61x251_vidioc_querycap(cam, arg); | |
2328 | ||
2329 | case VIDIOC_ENUMINPUT: | |
2330 | return et61x251_vidioc_enuminput(cam, arg); | |
2331 | ||
2332 | case VIDIOC_G_INPUT: | |
ccad7789 LR |
2333 | return et61x251_vidioc_g_input(cam, arg); |
2334 | ||
7ce08c93 | 2335 | case VIDIOC_S_INPUT: |
ccad7789 | 2336 | return et61x251_vidioc_s_input(cam, arg); |
7ce08c93 LR |
2337 | |
2338 | case VIDIOC_QUERYCTRL: | |
2339 | return et61x251_vidioc_query_ctrl(cam, arg); | |
2340 | ||
2341 | case VIDIOC_G_CTRL: | |
2342 | return et61x251_vidioc_g_ctrl(cam, arg); | |
2343 | ||
7ce08c93 LR |
2344 | case VIDIOC_S_CTRL: |
2345 | return et61x251_vidioc_s_ctrl(cam, arg); | |
2346 | ||
7ce08c93 LR |
2347 | case VIDIOC_CROPCAP: |
2348 | return et61x251_vidioc_cropcap(cam, arg); | |
2349 | ||
2350 | case VIDIOC_G_CROP: | |
2351 | return et61x251_vidioc_g_crop(cam, arg); | |
2352 | ||
2353 | case VIDIOC_S_CROP: | |
2354 | return et61x251_vidioc_s_crop(cam, arg); | |
2355 | ||
2356 | case VIDIOC_ENUM_FMT: | |
2357 | return et61x251_vidioc_enum_fmt(cam, arg); | |
2358 | ||
2359 | case VIDIOC_G_FMT: | |
2360 | return et61x251_vidioc_g_fmt(cam, arg); | |
2361 | ||
2362 | case VIDIOC_TRY_FMT: | |
2363 | case VIDIOC_S_FMT: | |
2364 | return et61x251_vidioc_try_s_fmt(cam, cmd, arg); | |
2365 | ||
2366 | case VIDIOC_G_JPEGCOMP: | |
2367 | return et61x251_vidioc_g_jpegcomp(cam, arg); | |
2368 | ||
2369 | case VIDIOC_S_JPEGCOMP: | |
2370 | return et61x251_vidioc_s_jpegcomp(cam, arg); | |
2371 | ||
2372 | case VIDIOC_REQBUFS: | |
2373 | return et61x251_vidioc_reqbufs(cam, arg); | |
2374 | ||
2375 | case VIDIOC_QUERYBUF: | |
2376 | return et61x251_vidioc_querybuf(cam, arg); | |
2377 | ||
2378 | case VIDIOC_QBUF: | |
2379 | return et61x251_vidioc_qbuf(cam, arg); | |
2380 | ||
2381 | case VIDIOC_DQBUF: | |
2382 | return et61x251_vidioc_dqbuf(cam, filp, arg); | |
2383 | ||
2384 | case VIDIOC_STREAMON: | |
2385 | return et61x251_vidioc_streamon(cam, arg); | |
2386 | ||
2387 | case VIDIOC_STREAMOFF: | |
2388 | return et61x251_vidioc_streamoff(cam, arg); | |
2389 | ||
2390 | case VIDIOC_G_PARM: | |
2391 | return et61x251_vidioc_g_parm(cam, arg); | |
2392 | ||
7ce08c93 LR |
2393 | case VIDIOC_S_PARM: |
2394 | return et61x251_vidioc_s_parm(cam, arg); | |
2395 | ||
2396 | case VIDIOC_G_STD: | |
2397 | case VIDIOC_S_STD: | |
2398 | case VIDIOC_QUERYSTD: | |
2399 | case VIDIOC_ENUMSTD: | |
2400 | case VIDIOC_QUERYMENU: | |
2401 | return -EINVAL; | |
2402 | ||
2403 | default: | |
2404 | return -EINVAL; | |
2405 | ||
2406 | } | |
2407 | } | |
2408 | ||
2409 | ||
2410 | static int et61x251_ioctl(struct inode* inode, struct file* filp, | |
d56410e0 | 2411 | unsigned int cmd, unsigned long arg) |
7ce08c93 LR |
2412 | { |
2413 | struct et61x251_device* cam = video_get_drvdata(video_devdata(filp)); | |
2414 | int err = 0; | |
2415 | ||
ccad7789 | 2416 | if (mutex_lock_interruptible(&cam->fileop_mutex)) |
7ce08c93 LR |
2417 | return -ERESTARTSYS; |
2418 | ||
2419 | if (cam->state & DEV_DISCONNECTED) { | |
2420 | DBG(1, "Device not present"); | |
ccad7789 | 2421 | mutex_unlock(&cam->fileop_mutex); |
7ce08c93 LR |
2422 | return -ENODEV; |
2423 | } | |
2424 | ||
2425 | if (cam->state & DEV_MISCONFIGURED) { | |
2426 | DBG(1, "The camera is misconfigured. Close and open it " | |
2427 | "again."); | |
ccad7789 | 2428 | mutex_unlock(&cam->fileop_mutex); |
7ce08c93 LR |
2429 | return -EIO; |
2430 | } | |
2431 | ||
2432 | V4LDBG(3, "et61x251", cmd); | |
2433 | ||
2434 | err = et61x251_ioctl_v4l2(inode, filp, cmd, (void __user *)arg); | |
2435 | ||
ccad7789 | 2436 | mutex_unlock(&cam->fileop_mutex); |
7ce08c93 LR |
2437 | |
2438 | return err; | |
2439 | } | |
2440 | ||
2441 | ||
2442 | static struct file_operations et61x251_fops = { | |
2443 | .owner = THIS_MODULE, | |
2444 | .open = et61x251_open, | |
2445 | .release = et61x251_release, | |
2446 | .ioctl = et61x251_ioctl, | |
2447 | .read = et61x251_read, | |
2448 | .poll = et61x251_poll, | |
2449 | .mmap = et61x251_mmap, | |
2450 | .llseek = no_llseek, | |
2451 | }; | |
2452 | ||
2453 | /*****************************************************************************/ | |
2454 | ||
2455 | /* It exists a single interface only. We do not need to validate anything. */ | |
2456 | static int | |
2457 | et61x251_usb_probe(struct usb_interface* intf, const struct usb_device_id* id) | |
2458 | { | |
2459 | struct usb_device *udev = interface_to_usbdev(intf); | |
2460 | struct et61x251_device* cam; | |
2461 | static unsigned int dev_nr = 0; | |
2462 | unsigned int i; | |
2463 | int err = 0; | |
2464 | ||
2465 | if (!(cam = kzalloc(sizeof(struct et61x251_device), GFP_KERNEL))) | |
2466 | return -ENOMEM; | |
2467 | ||
2468 | cam->usbdev = udev; | |
2469 | ||
2470 | if (!(cam->control_buffer = kzalloc(8, GFP_KERNEL))) { | |
2471 | DBG(1, "kmalloc() failed"); | |
2472 | err = -ENOMEM; | |
2473 | goto fail; | |
2474 | } | |
2475 | ||
2476 | if (!(cam->v4ldev = video_device_alloc())) { | |
2477 | DBG(1, "video_device_alloc() failed"); | |
2478 | err = -ENOMEM; | |
2479 | goto fail; | |
2480 | } | |
2481 | ||
ccad7789 | 2482 | mutex_init(&cam->dev_mutex); |
7ce08c93 LR |
2483 | |
2484 | DBG(2, "ET61X[12]51 PC Camera Controller detected " | |
2485 | "(vid/pid 0x%04X/0x%04X)",id->idVendor, id->idProduct); | |
2486 | ||
2487 | for (i = 0; et61x251_sensor_table[i]; i++) { | |
2488 | err = et61x251_sensor_table[i](cam); | |
2489 | if (!err) | |
2490 | break; | |
2491 | } | |
2492 | ||
ccad7789 LR |
2493 | if (!err) |
2494 | DBG(2, "%s image sensor detected", cam->sensor.name); | |
7ce08c93 LR |
2495 | else { |
2496 | DBG(1, "No supported image sensor detected"); | |
2497 | err = -ENODEV; | |
2498 | goto fail; | |
2499 | } | |
2500 | ||
2501 | if (et61x251_init(cam)) { | |
2502 | DBG(1, "Initialization failed. I will retry on open()."); | |
2503 | cam->state |= DEV_MISCONFIGURED; | |
2504 | } | |
2505 | ||
2506 | strcpy(cam->v4ldev->name, "ET61X[12]51 PC Camera"); | |
2507 | cam->v4ldev->owner = THIS_MODULE; | |
2508 | cam->v4ldev->type = VID_TYPE_CAPTURE | VID_TYPE_SCALES; | |
2509 | cam->v4ldev->hardware = 0; | |
2510 | cam->v4ldev->fops = &et61x251_fops; | |
2511 | cam->v4ldev->minor = video_nr[dev_nr]; | |
2512 | cam->v4ldev->release = video_device_release; | |
2513 | video_set_drvdata(cam->v4ldev, cam); | |
2514 | ||
ccad7789 | 2515 | mutex_lock(&cam->dev_mutex); |
7ce08c93 LR |
2516 | |
2517 | err = video_register_device(cam->v4ldev, VFL_TYPE_GRABBER, | |
d56410e0 | 2518 | video_nr[dev_nr]); |
7ce08c93 LR |
2519 | if (err) { |
2520 | DBG(1, "V4L2 device registration failed"); | |
2521 | if (err == -ENFILE && video_nr[dev_nr] == -1) | |
2522 | DBG(1, "Free /dev/videoX node not found"); | |
2523 | video_nr[dev_nr] = -1; | |
2524 | dev_nr = (dev_nr < ET61X251_MAX_DEVICES-1) ? dev_nr+1 : 0; | |
ccad7789 | 2525 | mutex_unlock(&cam->dev_mutex); |
7ce08c93 LR |
2526 | goto fail; |
2527 | } | |
2528 | ||
2529 | DBG(2, "V4L2 device registered as /dev/video%d", cam->v4ldev->minor); | |
2530 | ||
2531 | cam->module_param.force_munmap = force_munmap[dev_nr]; | |
ccad7789 | 2532 | cam->module_param.frame_timeout = frame_timeout[dev_nr]; |
7ce08c93 LR |
2533 | |
2534 | dev_nr = (dev_nr < ET61X251_MAX_DEVICES-1) ? dev_nr+1 : 0; | |
2535 | ||
2536 | #ifdef CONFIG_VIDEO_ADV_DEBUG | |
2537 | et61x251_create_sysfs(cam); | |
2538 | DBG(2, "Optional device control through 'sysfs' interface ready"); | |
2539 | #endif | |
2540 | ||
2541 | usb_set_intfdata(intf, cam); | |
2542 | ||
ccad7789 | 2543 | mutex_unlock(&cam->dev_mutex); |
7ce08c93 LR |
2544 | |
2545 | return 0; | |
2546 | ||
2547 | fail: | |
2548 | if (cam) { | |
2549 | kfree(cam->control_buffer); | |
2550 | if (cam->v4ldev) | |
2551 | video_device_release(cam->v4ldev); | |
2552 | kfree(cam); | |
2553 | } | |
2554 | return err; | |
2555 | } | |
2556 | ||
2557 | ||
2558 | static void et61x251_usb_disconnect(struct usb_interface* intf) | |
2559 | { | |
2560 | struct et61x251_device* cam = usb_get_intfdata(intf); | |
2561 | ||
2562 | if (!cam) | |
2563 | return; | |
2564 | ||
2565 | down_write(&et61x251_disconnect); | |
2566 | ||
ccad7789 | 2567 | mutex_lock(&cam->dev_mutex); |
7ce08c93 LR |
2568 | |
2569 | DBG(2, "Disconnecting %s...", cam->v4ldev->name); | |
2570 | ||
2571 | wake_up_interruptible_all(&cam->open); | |
2572 | ||
2573 | if (cam->users) { | |
2574 | DBG(2, "Device /dev/video%d is open! Deregistration and " | |
2575 | "memory deallocation are deferred on close.", | |
2576 | cam->v4ldev->minor); | |
2577 | cam->state |= DEV_MISCONFIGURED; | |
2578 | et61x251_stop_transfer(cam); | |
2579 | cam->state |= DEV_DISCONNECTED; | |
2580 | wake_up_interruptible(&cam->wait_frame); | |
ccad7789 LR |
2581 | wake_up(&cam->wait_stream); |
2582 | usb_get_dev(cam->usbdev); | |
7ce08c93 LR |
2583 | } else { |
2584 | cam->state |= DEV_DISCONNECTED; | |
2585 | et61x251_release_resources(cam); | |
2586 | } | |
2587 | ||
ccad7789 | 2588 | mutex_unlock(&cam->dev_mutex); |
7ce08c93 LR |
2589 | |
2590 | if (!cam->users) | |
2591 | kfree(cam); | |
2592 | ||
2593 | up_write(&et61x251_disconnect); | |
2594 | } | |
2595 | ||
2596 | ||
2597 | static struct usb_driver et61x251_usb_driver = { | |
2598 | .name = "et61x251", | |
2599 | .id_table = et61x251_id_table, | |
2600 | .probe = et61x251_usb_probe, | |
2601 | .disconnect = et61x251_usb_disconnect, | |
2602 | }; | |
2603 | ||
2604 | /*****************************************************************************/ | |
2605 | ||
2606 | static int __init et61x251_module_init(void) | |
2607 | { | |
2608 | int err = 0; | |
2609 | ||
2610 | KDBG(2, ET61X251_MODULE_NAME " v" ET61X251_MODULE_VERSION); | |
2611 | KDBG(3, ET61X251_MODULE_AUTHOR); | |
2612 | ||
2613 | if ((err = usb_register(&et61x251_usb_driver))) | |
2614 | KDBG(1, "usb_register() failed"); | |
2615 | ||
2616 | return err; | |
2617 | } | |
2618 | ||
2619 | ||
2620 | static void __exit et61x251_module_exit(void) | |
2621 | { | |
2622 | usb_deregister(&et61x251_usb_driver); | |
2623 | } | |
2624 | ||
2625 | ||
2626 | module_init(et61x251_module_init); | |
2627 | module_exit(et61x251_module_exit); |