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1da177e4 LT |
1 | /*************************************************************************** |
2 | * V4L2 driver for SN9C10x PC Camera Controllers * | |
3 | * * | |
a966f3e7 | 4 | * Copyright (C) 2004-2006 by Luca Risolia <luca.risolia@studio.unibo.it> * |
1da177e4 LT |
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> | |
28 | #include <linux/string.h> | |
29 | #include <linux/device.h> | |
30 | #include <linux/fs.h> | |
31 | #include <linux/delay.h> | |
32 | #include <linux/stddef.h> | |
33 | #include <linux/compiler.h> | |
34 | #include <linux/ioctl.h> | |
35 | #include <linux/poll.h> | |
36 | #include <linux/stat.h> | |
37 | #include <linux/mm.h> | |
38 | #include <linux/vmalloc.h> | |
39 | #include <linux/page-flags.h> | |
40 | #include <linux/byteorder/generic.h> | |
41 | #include <asm/page.h> | |
42 | #include <asm/uaccess.h> | |
43 | ||
44 | #include "sn9c102.h" | |
45 | ||
46 | /*****************************************************************************/ | |
47 | ||
cd6fcc55 LR |
48 | #define SN9C102_MODULE_NAME "V4L2 driver for SN9C10x PC Camera Controllers" |
49 | #define SN9C102_MODULE_AUTHOR "(C) 2004-2006 Luca Risolia" | |
50 | #define SN9C102_AUTHOR_EMAIL "<luca.risolia@studio.unibo.it>" | |
51 | #define SN9C102_MODULE_LICENSE "GPL" | |
52 | #define SN9C102_MODULE_VERSION "1:1.26" | |
53 | #define SN9C102_MODULE_VERSION_CODE KERNEL_VERSION(1, 0, 26) | |
54 | ||
55 | /*****************************************************************************/ | |
56 | ||
1da177e4 LT |
57 | MODULE_DEVICE_TABLE(usb, sn9c102_id_table); |
58 | ||
59 | MODULE_AUTHOR(SN9C102_MODULE_AUTHOR " " SN9C102_AUTHOR_EMAIL); | |
60 | MODULE_DESCRIPTION(SN9C102_MODULE_NAME); | |
61 | MODULE_VERSION(SN9C102_MODULE_VERSION); | |
62 | MODULE_LICENSE(SN9C102_MODULE_LICENSE); | |
63 | ||
64 | static short video_nr[] = {[0 ... SN9C102_MAX_DEVICES-1] = -1}; | |
65 | module_param_array(video_nr, short, NULL, 0444); | |
66 | MODULE_PARM_DESC(video_nr, | |
67 | "\n<-1|n[,...]> Specify V4L2 minor mode number." | |
68 | "\n -1 = use next available (default)" | |
69 | "\n n = use minor number n (integer >= 0)" | |
70 | "\nYou can specify up to "__MODULE_STRING(SN9C102_MAX_DEVICES) | |
71 | " cameras this way." | |
72 | "\nFor example:" | |
73 | "\nvideo_nr=-1,2,-1 would assign minor number 2 to" | |
74 | "\nthe second camera and use auto for the first" | |
75 | "\none and for every other camera." | |
76 | "\n"); | |
77 | ||
78 | static short force_munmap[] = {[0 ... SN9C102_MAX_DEVICES-1] = | |
79 | SN9C102_FORCE_MUNMAP}; | |
80 | module_param_array(force_munmap, bool, NULL, 0444); | |
81 | MODULE_PARM_DESC(force_munmap, | |
a966f3e7 LR |
82 | "\n<0|1[,...]> Force the application to unmap previously" |
83 | "\nmapped buffer memory before calling any VIDIOC_S_CROP or" | |
84 | "\nVIDIOC_S_FMT ioctl's. Not all the applications support" | |
85 | "\nthis feature. This parameter is specific for each" | |
1da177e4 LT |
86 | "\ndetected camera." |
87 | "\n 0 = do not force memory unmapping" | |
88 | "\n 1 = force memory unmapping (save memory)" | |
89 | "\nDefault value is "__MODULE_STRING(SN9C102_FORCE_MUNMAP)"." | |
90 | "\n"); | |
91 | ||
92 | #ifdef SN9C102_DEBUG | |
93 | static unsigned short debug = SN9C102_DEBUG_LEVEL; | |
94 | module_param(debug, ushort, 0644); | |
95 | MODULE_PARM_DESC(debug, | |
96 | "\n<n> Debugging information level, from 0 to 3:" | |
97 | "\n0 = none (use carefully)" | |
98 | "\n1 = critical errors" | |
99 | "\n2 = significant informations" | |
100 | "\n3 = more verbose messages" | |
101 | "\nLevel 3 is useful for testing only, when only " | |
102 | "one device is used." | |
103 | "\nDefault value is "__MODULE_STRING(SN9C102_DEBUG_LEVEL)"." | |
104 | "\n"); | |
105 | #endif | |
106 | ||
107 | /*****************************************************************************/ | |
108 | ||
109 | static sn9c102_sof_header_t sn9c102_sof_header[] = { | |
110 | {0xff, 0xff, 0x00, 0xc4, 0xc4, 0x96, 0x00}, | |
111 | {0xff, 0xff, 0x00, 0xc4, 0xc4, 0x96, 0x01}, | |
112 | }; | |
113 | ||
a966f3e7 LR |
114 | static sn9c103_sof_header_t sn9c103_sof_header[] = { |
115 | {0xff, 0xff, 0x00, 0xc4, 0xc4, 0x96, 0x20}, | |
116 | }; | |
1da177e4 LT |
117 | |
118 | static sn9c102_eof_header_t sn9c102_eof_header[] = { | |
119 | {0x00, 0x00, 0x00, 0x00}, | |
120 | {0x40, 0x00, 0x00, 0x00}, | |
121 | {0x80, 0x00, 0x00, 0x00}, | |
122 | {0xc0, 0x00, 0x00, 0x00}, | |
123 | }; | |
124 | ||
125 | /*****************************************************************************/ | |
126 | ||
1da177e4 LT |
127 | static u32 |
128 | sn9c102_request_buffers(struct sn9c102_device* cam, u32 count, | |
129 | enum sn9c102_io_method io) | |
130 | { | |
131 | struct v4l2_pix_format* p = &(cam->sensor->pix_format); | |
132 | struct v4l2_rect* r = &(cam->sensor->cropcap.bounds); | |
133 | const size_t imagesize = cam->module_param.force_munmap || | |
134 | io == IO_READ ? | |
135 | (p->width * p->height * p->priv) / 8 : | |
136 | (r->width * r->height * p->priv) / 8; | |
137 | void* buff = NULL; | |
138 | u32 i; | |
139 | ||
140 | if (count > SN9C102_MAX_FRAMES) | |
141 | count = SN9C102_MAX_FRAMES; | |
142 | ||
143 | cam->nbuffers = count; | |
144 | while (cam->nbuffers > 0) { | |
cd6fcc55 | 145 | if ((buff = vmalloc_32(cam->nbuffers * PAGE_ALIGN(imagesize)))) |
1da177e4 LT |
146 | break; |
147 | cam->nbuffers--; | |
148 | } | |
149 | ||
150 | for (i = 0; i < cam->nbuffers; i++) { | |
151 | cam->frame[i].bufmem = buff + i*PAGE_ALIGN(imagesize); | |
152 | cam->frame[i].buf.index = i; | |
153 | cam->frame[i].buf.m.offset = i*PAGE_ALIGN(imagesize); | |
154 | cam->frame[i].buf.length = imagesize; | |
155 | cam->frame[i].buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
156 | cam->frame[i].buf.sequence = 0; | |
157 | cam->frame[i].buf.field = V4L2_FIELD_NONE; | |
158 | cam->frame[i].buf.memory = V4L2_MEMORY_MMAP; | |
159 | cam->frame[i].buf.flags = 0; | |
160 | } | |
161 | ||
162 | return cam->nbuffers; | |
163 | } | |
164 | ||
165 | ||
166 | static void sn9c102_release_buffers(struct sn9c102_device* cam) | |
167 | { | |
168 | if (cam->nbuffers) { | |
cd6fcc55 | 169 | vfree(cam->frame[0].bufmem); |
1da177e4 LT |
170 | cam->nbuffers = 0; |
171 | } | |
a966f3e7 | 172 | cam->frame_current = NULL; |
1da177e4 LT |
173 | } |
174 | ||
175 | ||
176 | static void sn9c102_empty_framequeues(struct sn9c102_device* cam) | |
177 | { | |
178 | u32 i; | |
179 | ||
180 | INIT_LIST_HEAD(&cam->inqueue); | |
181 | INIT_LIST_HEAD(&cam->outqueue); | |
182 | ||
183 | for (i = 0; i < SN9C102_MAX_FRAMES; i++) { | |
184 | cam->frame[i].state = F_UNUSED; | |
185 | cam->frame[i].buf.bytesused = 0; | |
186 | } | |
187 | } | |
188 | ||
189 | ||
a966f3e7 LR |
190 | static void sn9c102_requeue_outqueue(struct sn9c102_device* cam) |
191 | { | |
192 | struct sn9c102_frame_t *i; | |
193 | ||
194 | list_for_each_entry(i, &cam->outqueue, frame) { | |
195 | i->state = F_QUEUED; | |
196 | list_add(&i->frame, &cam->inqueue); | |
197 | } | |
198 | ||
199 | INIT_LIST_HEAD(&cam->outqueue); | |
200 | } | |
201 | ||
202 | ||
1da177e4 LT |
203 | static void sn9c102_queue_unusedframes(struct sn9c102_device* cam) |
204 | { | |
205 | unsigned long lock_flags; | |
206 | u32 i; | |
207 | ||
208 | for (i = 0; i < cam->nbuffers; i++) | |
209 | if (cam->frame[i].state == F_UNUSED) { | |
210 | cam->frame[i].state = F_QUEUED; | |
211 | spin_lock_irqsave(&cam->queue_lock, lock_flags); | |
212 | list_add_tail(&cam->frame[i].frame, &cam->inqueue); | |
213 | spin_unlock_irqrestore(&cam->queue_lock, lock_flags); | |
214 | } | |
215 | } | |
216 | ||
217 | /*****************************************************************************/ | |
218 | ||
a966f3e7 LR |
219 | int sn9c102_write_regs(struct sn9c102_device* cam, u8* buff, u16 index) |
220 | { | |
221 | struct usb_device* udev = cam->usbdev; | |
222 | int i, res; | |
223 | ||
224 | if (index + sizeof(buff) >= ARRAY_SIZE(cam->reg)) | |
225 | return -1; | |
226 | ||
227 | res = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x08, 0x41, | |
228 | index, 0, buff, sizeof(buff), | |
229 | SN9C102_CTRL_TIMEOUT*sizeof(buff)); | |
230 | if (res < 0) { | |
231 | DBG(3, "Failed to write registers (index 0x%02X, error %d)", | |
232 | index, res); | |
233 | return -1; | |
234 | } | |
235 | ||
236 | for (i = 0; i < sizeof(buff); i++) | |
237 | cam->reg[index+i] = buff[i]; | |
238 | ||
239 | return 0; | |
240 | } | |
241 | ||
242 | ||
1da177e4 LT |
243 | int sn9c102_write_reg(struct sn9c102_device* cam, u8 value, u16 index) |
244 | { | |
245 | struct usb_device* udev = cam->usbdev; | |
246 | u8* buff = cam->control_buffer; | |
247 | int res; | |
248 | ||
a966f3e7 LR |
249 | if (index >= ARRAY_SIZE(cam->reg)) |
250 | return -1; | |
251 | ||
1da177e4 LT |
252 | *buff = value; |
253 | ||
254 | res = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x08, 0x41, | |
255 | index, 0, buff, 1, SN9C102_CTRL_TIMEOUT); | |
256 | if (res < 0) { | |
257 | DBG(3, "Failed to write a register (value 0x%02X, index " | |
a966f3e7 | 258 | "0x%02X, error %d)", value, index, res); |
1da177e4 LT |
259 | return -1; |
260 | } | |
261 | ||
262 | cam->reg[index] = value; | |
263 | ||
264 | return 0; | |
265 | } | |
266 | ||
267 | ||
268 | /* NOTE: reading some registers always returns 0 */ | |
269 | static int sn9c102_read_reg(struct sn9c102_device* cam, u16 index) | |
270 | { | |
271 | struct usb_device* udev = cam->usbdev; | |
272 | u8* buff = cam->control_buffer; | |
273 | int res; | |
274 | ||
275 | res = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x00, 0xc1, | |
276 | index, 0, buff, 1, SN9C102_CTRL_TIMEOUT); | |
277 | if (res < 0) | |
278 | DBG(3, "Failed to read a register (index 0x%02X, error %d)", | |
a966f3e7 | 279 | index, res); |
1da177e4 LT |
280 | |
281 | return (res >= 0) ? (int)(*buff) : -1; | |
282 | } | |
283 | ||
284 | ||
285 | int sn9c102_pread_reg(struct sn9c102_device* cam, u16 index) | |
286 | { | |
a966f3e7 LR |
287 | if (index >= ARRAY_SIZE(cam->reg)) |
288 | return -1; | |
1da177e4 LT |
289 | |
290 | return cam->reg[index]; | |
291 | } | |
292 | ||
293 | ||
294 | static int | |
295 | sn9c102_i2c_wait(struct sn9c102_device* cam, struct sn9c102_sensor* sensor) | |
296 | { | |
297 | int i, r; | |
298 | ||
299 | for (i = 1; i <= 5; i++) { | |
300 | r = sn9c102_read_reg(cam, 0x08); | |
301 | if (r < 0) | |
302 | return -EIO; | |
303 | if (r & 0x04) | |
304 | return 0; | |
305 | if (sensor->frequency & SN9C102_I2C_400KHZ) | |
306 | udelay(5*16); | |
307 | else | |
308 | udelay(16*16); | |
309 | } | |
310 | return -EBUSY; | |
311 | } | |
312 | ||
313 | ||
314 | static int | |
315 | sn9c102_i2c_detect_read_error(struct sn9c102_device* cam, | |
316 | struct sn9c102_sensor* sensor) | |
317 | { | |
318 | int r; | |
319 | r = sn9c102_read_reg(cam, 0x08); | |
320 | return (r < 0 || (r >= 0 && !(r & 0x08))) ? -EIO : 0; | |
321 | } | |
322 | ||
323 | ||
324 | static int | |
325 | sn9c102_i2c_detect_write_error(struct sn9c102_device* cam, | |
326 | struct sn9c102_sensor* sensor) | |
327 | { | |
328 | int r; | |
329 | r = sn9c102_read_reg(cam, 0x08); | |
330 | return (r < 0 || (r >= 0 && (r & 0x08))) ? -EIO : 0; | |
331 | } | |
332 | ||
333 | ||
334 | int | |
335 | sn9c102_i2c_try_raw_read(struct sn9c102_device* cam, | |
336 | struct sn9c102_sensor* sensor, u8 data0, u8 data1, | |
337 | u8 n, u8 buffer[]) | |
338 | { | |
339 | struct usb_device* udev = cam->usbdev; | |
340 | u8* data = cam->control_buffer; | |
341 | int err = 0, res; | |
342 | ||
343 | /* Write cycle */ | |
344 | data[0] = ((sensor->interface == SN9C102_I2C_2WIRES) ? 0x80 : 0) | | |
345 | ((sensor->frequency & SN9C102_I2C_400KHZ) ? 0x01 : 0) | 0x10; | |
346 | data[1] = data0; /* I2C slave id */ | |
347 | data[2] = data1; /* address */ | |
348 | data[7] = 0x10; | |
349 | res = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x08, 0x41, | |
350 | 0x08, 0, data, 8, SN9C102_CTRL_TIMEOUT); | |
351 | if (res < 0) | |
352 | err += res; | |
353 | ||
354 | err += sn9c102_i2c_wait(cam, sensor); | |
355 | ||
356 | /* Read cycle - n bytes */ | |
357 | data[0] = ((sensor->interface == SN9C102_I2C_2WIRES) ? 0x80 : 0) | | |
358 | ((sensor->frequency & SN9C102_I2C_400KHZ) ? 0x01 : 0) | | |
359 | (n << 4) | 0x02; | |
360 | data[1] = data0; | |
361 | data[7] = 0x10; | |
362 | res = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x08, 0x41, | |
363 | 0x08, 0, data, 8, SN9C102_CTRL_TIMEOUT); | |
364 | if (res < 0) | |
365 | err += res; | |
366 | ||
367 | err += sn9c102_i2c_wait(cam, sensor); | |
368 | ||
369 | /* The first read byte will be placed in data[4] */ | |
370 | res = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x00, 0xc1, | |
371 | 0x0a, 0, data, 5, SN9C102_CTRL_TIMEOUT); | |
372 | if (res < 0) | |
373 | err += res; | |
374 | ||
375 | err += sn9c102_i2c_detect_read_error(cam, sensor); | |
376 | ||
377 | PDBGG("I2C read: address 0x%02X, first read byte: 0x%02X", data1, | |
a966f3e7 | 378 | data[4]); |
1da177e4 LT |
379 | |
380 | if (err) { | |
a966f3e7 | 381 | DBG(3, "I2C read failed for %s image sensor", sensor->name); |
1da177e4 LT |
382 | return -1; |
383 | } | |
384 | ||
385 | if (buffer) | |
386 | memcpy(buffer, data, sizeof(buffer)); | |
387 | ||
388 | return (int)data[4]; | |
389 | } | |
390 | ||
391 | ||
392 | int | |
393 | sn9c102_i2c_try_raw_write(struct sn9c102_device* cam, | |
394 | struct sn9c102_sensor* sensor, u8 n, u8 data0, | |
395 | u8 data1, u8 data2, u8 data3, u8 data4, u8 data5) | |
396 | { | |
397 | struct usb_device* udev = cam->usbdev; | |
398 | u8* data = cam->control_buffer; | |
399 | int err = 0, res; | |
400 | ||
401 | /* Write cycle. It usually is address + value */ | |
402 | data[0] = ((sensor->interface == SN9C102_I2C_2WIRES) ? 0x80 : 0) | | |
403 | ((sensor->frequency & SN9C102_I2C_400KHZ) ? 0x01 : 0) | |
404 | | ((n - 1) << 4); | |
405 | data[1] = data0; | |
406 | data[2] = data1; | |
407 | data[3] = data2; | |
408 | data[4] = data3; | |
409 | data[5] = data4; | |
410 | data[6] = data5; | |
411 | data[7] = 0x14; | |
412 | res = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x08, 0x41, | |
413 | 0x08, 0, data, 8, SN9C102_CTRL_TIMEOUT); | |
414 | if (res < 0) | |
415 | err += res; | |
416 | ||
417 | err += sn9c102_i2c_wait(cam, sensor); | |
418 | err += sn9c102_i2c_detect_write_error(cam, sensor); | |
419 | ||
420 | if (err) | |
a966f3e7 | 421 | DBG(3, "I2C write failed for %s image sensor", sensor->name); |
1da177e4 LT |
422 | |
423 | PDBGG("I2C raw write: %u bytes, data0 = 0x%02X, data1 = 0x%02X, " | |
424 | "data2 = 0x%02X, data3 = 0x%02X, data4 = 0x%02X, data5 = 0x%02X", | |
a966f3e7 | 425 | n, data0, data1, data2, data3, data4, data5); |
1da177e4 LT |
426 | |
427 | return err ? -1 : 0; | |
428 | } | |
429 | ||
430 | ||
431 | int | |
432 | sn9c102_i2c_try_read(struct sn9c102_device* cam, | |
433 | struct sn9c102_sensor* sensor, u8 address) | |
434 | { | |
435 | return sn9c102_i2c_try_raw_read(cam, sensor, sensor->i2c_slave_id, | |
436 | address, 1, NULL); | |
437 | } | |
438 | ||
439 | ||
b9df978f | 440 | int |
1da177e4 LT |
441 | sn9c102_i2c_try_write(struct sn9c102_device* cam, |
442 | struct sn9c102_sensor* sensor, u8 address, u8 value) | |
443 | { | |
444 | return sn9c102_i2c_try_raw_write(cam, sensor, 3, | |
445 | sensor->i2c_slave_id, address, | |
446 | value, 0, 0, 0); | |
447 | } | |
448 | ||
449 | ||
450 | int sn9c102_i2c_read(struct sn9c102_device* cam, u8 address) | |
451 | { | |
452 | if (!cam->sensor) | |
453 | return -1; | |
454 | ||
455 | return sn9c102_i2c_try_read(cam, cam->sensor, address); | |
456 | } | |
457 | ||
458 | ||
459 | int sn9c102_i2c_write(struct sn9c102_device* cam, u8 address, u8 value) | |
460 | { | |
461 | if (!cam->sensor) | |
462 | return -1; | |
463 | ||
464 | return sn9c102_i2c_try_write(cam, cam->sensor, address, value); | |
465 | } | |
466 | ||
467 | /*****************************************************************************/ | |
468 | ||
469 | static void* | |
470 | sn9c102_find_sof_header(struct sn9c102_device* cam, void* mem, size_t len) | |
471 | { | |
a966f3e7 LR |
472 | size_t soflen = 0, i; |
473 | u8 j, n = 0; | |
474 | ||
475 | switch (cam->bridge) { | |
476 | case BRIDGE_SN9C101: | |
477 | case BRIDGE_SN9C102: | |
478 | soflen = sizeof(sn9c102_sof_header_t); | |
479 | n = sizeof(sn9c102_sof_header) / soflen; | |
480 | break; | |
481 | case BRIDGE_SN9C103: | |
482 | soflen = sizeof(sn9c103_sof_header_t); | |
483 | n = sizeof(sn9c103_sof_header) / soflen; | |
484 | } | |
1da177e4 | 485 | |
a966f3e7 | 486 | for (i = 0; (len >= soflen) && (i <= len - soflen); i++) |
1da177e4 | 487 | for (j = 0; j < n; j++) |
a966f3e7 LR |
488 | /* The invariable part of the header is 6 bytes long */ |
489 | if ((cam->bridge != BRIDGE_SN9C103 && | |
490 | !memcmp(mem + i, sn9c102_sof_header[j], 6)) || | |
491 | (cam->bridge == BRIDGE_SN9C103 && | |
492 | !memcmp(mem + i, sn9c103_sof_header[j], 6))) { | |
1da177e4 LT |
493 | memcpy(cam->sof_header, mem + i, soflen); |
494 | /* Skip the header */ | |
495 | return mem + i + soflen; | |
496 | } | |
497 | ||
498 | return NULL; | |
499 | } | |
500 | ||
501 | ||
502 | static void* | |
503 | sn9c102_find_eof_header(struct sn9c102_device* cam, void* mem, size_t len) | |
504 | { | |
505 | size_t eoflen = sizeof(sn9c102_eof_header_t), i; | |
506 | unsigned j, n = sizeof(sn9c102_eof_header) / eoflen; | |
507 | ||
508 | if (cam->sensor->pix_format.pixelformat == V4L2_PIX_FMT_SN9C10X) | |
509 | return NULL; /* EOF header does not exist in compressed data */ | |
510 | ||
511 | for (i = 0; (len >= eoflen) && (i <= len - eoflen); i++) | |
512 | for (j = 0; j < n; j++) | |
513 | if (!memcmp(mem + i, sn9c102_eof_header[j], eoflen)) | |
514 | return mem + i; | |
515 | ||
516 | return NULL; | |
517 | } | |
518 | ||
519 | ||
520 | static void sn9c102_urb_complete(struct urb *urb, struct pt_regs* regs) | |
521 | { | |
522 | struct sn9c102_device* cam = urb->context; | |
523 | struct sn9c102_frame_t** f; | |
a966f3e7 | 524 | size_t imagesize, soflen; |
1da177e4 LT |
525 | u8 i; |
526 | int err = 0; | |
527 | ||
528 | if (urb->status == -ENOENT) | |
529 | return; | |
530 | ||
531 | f = &cam->frame_current; | |
532 | ||
533 | if (cam->stream == STREAM_INTERRUPT) { | |
534 | cam->stream = STREAM_OFF; | |
535 | if ((*f)) | |
536 | (*f)->state = F_QUEUED; | |
a966f3e7 | 537 | DBG(3, "Stream interrupted"); |
1da177e4 LT |
538 | wake_up_interruptible(&cam->wait_stream); |
539 | } | |
540 | ||
541 | if (cam->state & DEV_DISCONNECTED) | |
542 | return; | |
543 | ||
544 | if (cam->state & DEV_MISCONFIGURED) { | |
545 | wake_up_interruptible(&cam->wait_frame); | |
546 | return; | |
547 | } | |
548 | ||
549 | if (cam->stream == STREAM_OFF || list_empty(&cam->inqueue)) | |
550 | goto resubmit_urb; | |
551 | ||
552 | if (!(*f)) | |
553 | (*f) = list_entry(cam->inqueue.next, struct sn9c102_frame_t, | |
554 | frame); | |
555 | ||
556 | imagesize = (cam->sensor->pix_format.width * | |
557 | cam->sensor->pix_format.height * | |
558 | cam->sensor->pix_format.priv) / 8; | |
559 | ||
a966f3e7 LR |
560 | soflen = (cam->bridge) == BRIDGE_SN9C103 ? |
561 | sizeof(sn9c103_sof_header_t) : | |
562 | sizeof(sn9c102_sof_header_t); | |
563 | ||
1da177e4 LT |
564 | for (i = 0; i < urb->number_of_packets; i++) { |
565 | unsigned int img, len, status; | |
566 | void *pos, *sof, *eof; | |
567 | ||
568 | len = urb->iso_frame_desc[i].actual_length; | |
569 | status = urb->iso_frame_desc[i].status; | |
570 | pos = urb->iso_frame_desc[i].offset + urb->transfer_buffer; | |
571 | ||
572 | if (status) { | |
a966f3e7 | 573 | DBG(3, "Error in isochronous frame"); |
1da177e4 LT |
574 | (*f)->state = F_ERROR; |
575 | continue; | |
576 | } | |
577 | ||
a966f3e7 | 578 | PDBGG("Isochrnous frame: length %u, #%u i", len, i); |
1da177e4 LT |
579 | |
580 | redo: | |
581 | sof = sn9c102_find_sof_header(cam, pos, len); | |
582 | if (!sof) { | |
583 | eof = sn9c102_find_eof_header(cam, pos, len); | |
584 | if ((*f)->state == F_GRABBING) { | |
585 | end_of_frame: | |
586 | img = len; | |
587 | ||
588 | if (eof) | |
589 | img = (eof > pos) ? eof - pos - 1 : 0; | |
590 | ||
591 | if ((*f)->buf.bytesused+img > imagesize) { | |
592 | u32 b = (*f)->buf.bytesused + img - | |
593 | imagesize; | |
594 | img = imagesize - (*f)->buf.bytesused; | |
595 | DBG(3, "Expected EOF not found: " | |
a966f3e7 | 596 | "video frame cut"); |
1da177e4 LT |
597 | if (eof) |
598 | DBG(3, "Exceeded limit: +%u " | |
a966f3e7 | 599 | "bytes", (unsigned)(b)); |
1da177e4 LT |
600 | } |
601 | ||
602 | memcpy((*f)->bufmem + (*f)->buf.bytesused, pos, | |
603 | img); | |
604 | ||
605 | if ((*f)->buf.bytesused == 0) | |
606 | do_gettimeofday(&(*f)->buf.timestamp); | |
607 | ||
608 | (*f)->buf.bytesused += img; | |
609 | ||
610 | if ((*f)->buf.bytesused == imagesize || | |
611 | (cam->sensor->pix_format.pixelformat == | |
612 | V4L2_PIX_FMT_SN9C10X && eof)) { | |
613 | u32 b = (*f)->buf.bytesused; | |
614 | (*f)->state = F_DONE; | |
615 | (*f)->buf.sequence= ++cam->frame_count; | |
a966f3e7 | 616 | spin_lock(&cam->queue_lock); |
1da177e4 LT |
617 | list_move_tail(&(*f)->frame, |
618 | &cam->outqueue); | |
619 | if (!list_empty(&cam->inqueue)) | |
620 | (*f) = list_entry( | |
621 | cam->inqueue.next, | |
622 | struct sn9c102_frame_t, | |
623 | frame ); | |
624 | else | |
625 | (*f) = NULL; | |
a966f3e7 | 626 | spin_unlock(&cam->queue_lock); |
1da177e4 | 627 | memcpy(cam->sysfs.frame_header, |
a966f3e7 LR |
628 | cam->sof_header, soflen); |
629 | DBG(3, "Video frame captured: %lu " | |
630 | "bytes", (unsigned long)(b)); | |
1da177e4 LT |
631 | |
632 | if (!(*f)) | |
633 | goto resubmit_urb; | |
634 | ||
635 | } else if (eof) { | |
636 | (*f)->state = F_ERROR; | |
637 | DBG(3, "Not expected EOF after %lu " | |
638 | "bytes of image data", | |
a966f3e7 LR |
639 | (unsigned long) |
640 | ((*f)->buf.bytesused)); | |
1da177e4 LT |
641 | } |
642 | ||
643 | if (sof) /* (1) */ | |
644 | goto start_of_frame; | |
645 | ||
646 | } else if (eof) { | |
a966f3e7 | 647 | DBG(3, "EOF without SOF"); |
1da177e4 LT |
648 | continue; |
649 | ||
650 | } else { | |
a966f3e7 | 651 | PDBGG("Ignoring pointless isochronous frame"); |
1da177e4 LT |
652 | continue; |
653 | } | |
654 | ||
655 | } else if ((*f)->state == F_QUEUED || (*f)->state == F_ERROR) { | |
656 | start_of_frame: | |
657 | (*f)->state = F_GRABBING; | |
658 | (*f)->buf.bytesused = 0; | |
659 | len -= (sof - pos); | |
660 | pos = sof; | |
a966f3e7 | 661 | DBG(3, "SOF detected: new video frame"); |
1da177e4 LT |
662 | if (len) |
663 | goto redo; | |
664 | ||
665 | } else if ((*f)->state == F_GRABBING) { | |
666 | eof = sn9c102_find_eof_header(cam, pos, len); | |
667 | if (eof && eof < sof) | |
668 | goto end_of_frame; /* (1) */ | |
669 | else { | |
670 | if (cam->sensor->pix_format.pixelformat == | |
671 | V4L2_PIX_FMT_SN9C10X) { | |
a966f3e7 | 672 | eof = sof - soflen; |
1da177e4 LT |
673 | goto end_of_frame; |
674 | } else { | |
675 | DBG(3, "SOF before expected EOF after " | |
676 | "%lu bytes of image data", | |
a966f3e7 LR |
677 | (unsigned long) |
678 | ((*f)->buf.bytesused)); | |
1da177e4 LT |
679 | goto start_of_frame; |
680 | } | |
681 | } | |
682 | } | |
683 | } | |
684 | ||
685 | resubmit_urb: | |
686 | urb->dev = cam->usbdev; | |
687 | err = usb_submit_urb(urb, GFP_ATOMIC); | |
688 | if (err < 0 && err != -EPERM) { | |
689 | cam->state |= DEV_MISCONFIGURED; | |
a966f3e7 | 690 | DBG(1, "usb_submit_urb() failed"); |
1da177e4 LT |
691 | } |
692 | ||
693 | wake_up_interruptible(&cam->wait_frame); | |
694 | } | |
695 | ||
696 | ||
697 | static int sn9c102_start_transfer(struct sn9c102_device* cam) | |
698 | { | |
699 | struct usb_device *udev = cam->usbdev; | |
700 | struct urb* urb; | |
a966f3e7 LR |
701 | const unsigned int sn9c102_wMaxPacketSize[] = {0, 128, 256, 384, 512, |
702 | 680, 800, 900, 1023}; | |
703 | const unsigned int sn9c103_wMaxPacketSize[] = {0, 128, 256, 384, 512, | |
704 | 680, 800, 900, 1003}; | |
705 | const unsigned int psz = (cam->bridge == BRIDGE_SN9C103) ? | |
706 | sn9c103_wMaxPacketSize[SN9C102_ALTERNATE_SETTING] : | |
707 | sn9c102_wMaxPacketSize[SN9C102_ALTERNATE_SETTING]; | |
1da177e4 LT |
708 | s8 i, j; |
709 | int err = 0; | |
710 | ||
711 | for (i = 0; i < SN9C102_URBS; i++) { | |
cd6fcc55 | 712 | cam->transfer_buffer[i] = kzalloc(SN9C102_ISO_PACKETS * psz, |
1da177e4 LT |
713 | GFP_KERNEL); |
714 | if (!cam->transfer_buffer[i]) { | |
715 | err = -ENOMEM; | |
a966f3e7 | 716 | DBG(1, "Not enough memory"); |
1da177e4 LT |
717 | goto free_buffers; |
718 | } | |
719 | } | |
720 | ||
721 | for (i = 0; i < SN9C102_URBS; i++) { | |
722 | urb = usb_alloc_urb(SN9C102_ISO_PACKETS, GFP_KERNEL); | |
723 | cam->urb[i] = urb; | |
724 | if (!urb) { | |
725 | err = -ENOMEM; | |
a966f3e7 | 726 | DBG(1, "usb_alloc_urb() failed"); |
1da177e4 LT |
727 | goto free_urbs; |
728 | } | |
729 | urb->dev = udev; | |
730 | urb->context = cam; | |
731 | urb->pipe = usb_rcvisocpipe(udev, 1); | |
732 | urb->transfer_flags = URB_ISO_ASAP; | |
733 | urb->number_of_packets = SN9C102_ISO_PACKETS; | |
734 | urb->complete = sn9c102_urb_complete; | |
735 | urb->transfer_buffer = cam->transfer_buffer[i]; | |
736 | urb->transfer_buffer_length = psz * SN9C102_ISO_PACKETS; | |
737 | urb->interval = 1; | |
738 | for (j = 0; j < SN9C102_ISO_PACKETS; j++) { | |
739 | urb->iso_frame_desc[j].offset = psz * j; | |
740 | urb->iso_frame_desc[j].length = psz; | |
741 | } | |
742 | } | |
743 | ||
744 | /* Enable video */ | |
745 | if (!(cam->reg[0x01] & 0x04)) { | |
746 | err = sn9c102_write_reg(cam, cam->reg[0x01] | 0x04, 0x01); | |
747 | if (err) { | |
748 | err = -EIO; | |
a966f3e7 | 749 | DBG(1, "I/O hardware error"); |
1da177e4 LT |
750 | goto free_urbs; |
751 | } | |
752 | } | |
753 | ||
754 | err = usb_set_interface(udev, 0, SN9C102_ALTERNATE_SETTING); | |
755 | if (err) { | |
a966f3e7 | 756 | DBG(1, "usb_set_interface() failed"); |
1da177e4 LT |
757 | goto free_urbs; |
758 | } | |
759 | ||
760 | cam->frame_current = NULL; | |
761 | ||
762 | for (i = 0; i < SN9C102_URBS; i++) { | |
763 | err = usb_submit_urb(cam->urb[i], GFP_KERNEL); | |
764 | if (err) { | |
765 | for (j = i-1; j >= 0; j--) | |
766 | usb_kill_urb(cam->urb[j]); | |
a966f3e7 | 767 | DBG(1, "usb_submit_urb() failed, error %d", err); |
1da177e4 LT |
768 | goto free_urbs; |
769 | } | |
770 | } | |
771 | ||
772 | return 0; | |
773 | ||
774 | free_urbs: | |
775 | for (i = 0; (i < SN9C102_URBS) && cam->urb[i]; i++) | |
776 | usb_free_urb(cam->urb[i]); | |
777 | ||
778 | free_buffers: | |
779 | for (i = 0; (i < SN9C102_URBS) && cam->transfer_buffer[i]; i++) | |
780 | kfree(cam->transfer_buffer[i]); | |
781 | ||
782 | return err; | |
783 | } | |
784 | ||
785 | ||
786 | static int sn9c102_stop_transfer(struct sn9c102_device* cam) | |
787 | { | |
788 | struct usb_device *udev = cam->usbdev; | |
789 | s8 i; | |
790 | int err = 0; | |
791 | ||
792 | if (cam->state & DEV_DISCONNECTED) | |
793 | return 0; | |
794 | ||
795 | for (i = SN9C102_URBS-1; i >= 0; i--) { | |
796 | usb_kill_urb(cam->urb[i]); | |
797 | usb_free_urb(cam->urb[i]); | |
798 | kfree(cam->transfer_buffer[i]); | |
799 | } | |
800 | ||
801 | err = usb_set_interface(udev, 0, 0); /* 0 Mb/s */ | |
802 | if (err) | |
a966f3e7 | 803 | DBG(3, "usb_set_interface() failed"); |
1da177e4 LT |
804 | |
805 | return err; | |
806 | } | |
807 | ||
808 | ||
7107627b | 809 | static int sn9c102_stream_interrupt(struct sn9c102_device* cam) |
1da177e4 LT |
810 | { |
811 | int err = 0; | |
812 | ||
813 | cam->stream = STREAM_INTERRUPT; | |
814 | err = wait_event_timeout(cam->wait_stream, | |
815 | (cam->stream == STREAM_OFF) || | |
816 | (cam->state & DEV_DISCONNECTED), | |
817 | SN9C102_URB_TIMEOUT); | |
818 | if (cam->state & DEV_DISCONNECTED) | |
819 | return -ENODEV; | |
820 | else if (err) { | |
821 | cam->state |= DEV_MISCONFIGURED; | |
822 | DBG(1, "The camera is misconfigured. To use it, close and " | |
a966f3e7 | 823 | "open /dev/video%d again.", cam->v4ldev->minor); |
1da177e4 LT |
824 | return err; |
825 | } | |
826 | ||
827 | return 0; | |
828 | } | |
829 | ||
830 | /*****************************************************************************/ | |
831 | ||
cd6fcc55 | 832 | #ifdef CONFIG_VIDEO_ADV_DEBUG |
1da177e4 LT |
833 | static u8 sn9c102_strtou8(const char* buff, size_t len, ssize_t* count) |
834 | { | |
835 | char str[5]; | |
836 | char* endp; | |
837 | unsigned long val; | |
838 | ||
839 | if (len < 4) { | |
840 | strncpy(str, buff, len); | |
841 | str[len+1] = '\0'; | |
842 | } else { | |
843 | strncpy(str, buff, 4); | |
844 | str[4] = '\0'; | |
845 | } | |
846 | ||
847 | val = simple_strtoul(str, &endp, 0); | |
848 | ||
849 | *count = 0; | |
850 | if (val <= 0xff) | |
851 | *count = (ssize_t)(endp - str); | |
852 | if ((*count) && (len == *count+1) && (buff[*count] == '\n')) | |
853 | *count += 1; | |
854 | ||
855 | return (u8)val; | |
856 | } | |
857 | ||
858 | /* | |
859 | NOTE 1: being inside one of the following methods implies that the v4l | |
860 | device exists for sure (see kobjects and reference counters) | |
861 | NOTE 2: buffers are PAGE_SIZE long | |
862 | */ | |
863 | ||
864 | static ssize_t sn9c102_show_reg(struct class_device* cd, char* buf) | |
865 | { | |
866 | struct sn9c102_device* cam; | |
867 | ssize_t count; | |
868 | ||
869 | if (down_interruptible(&sn9c102_sysfs_lock)) | |
870 | return -ERESTARTSYS; | |
871 | ||
872 | cam = video_get_drvdata(to_video_device(cd)); | |
873 | if (!cam) { | |
874 | up(&sn9c102_sysfs_lock); | |
875 | return -ENODEV; | |
876 | } | |
877 | ||
878 | count = sprintf(buf, "%u\n", cam->sysfs.reg); | |
879 | ||
880 | up(&sn9c102_sysfs_lock); | |
881 | ||
882 | return count; | |
883 | } | |
884 | ||
885 | ||
886 | static ssize_t | |
887 | sn9c102_store_reg(struct class_device* cd, const char* buf, size_t len) | |
888 | { | |
889 | struct sn9c102_device* cam; | |
890 | u8 index; | |
891 | ssize_t count; | |
892 | ||
893 | if (down_interruptible(&sn9c102_sysfs_lock)) | |
894 | return -ERESTARTSYS; | |
895 | ||
896 | cam = video_get_drvdata(to_video_device(cd)); | |
897 | if (!cam) { | |
898 | up(&sn9c102_sysfs_lock); | |
899 | return -ENODEV; | |
900 | } | |
901 | ||
902 | index = sn9c102_strtou8(buf, len, &count); | |
903 | if (index > 0x1f || !count) { | |
904 | up(&sn9c102_sysfs_lock); | |
905 | return -EINVAL; | |
906 | } | |
907 | ||
908 | cam->sysfs.reg = index; | |
909 | ||
a966f3e7 LR |
910 | DBG(2, "Moved SN9C10X register index to 0x%02X", cam->sysfs.reg); |
911 | DBG(3, "Written bytes: %zd", count); | |
1da177e4 LT |
912 | |
913 | up(&sn9c102_sysfs_lock); | |
914 | ||
915 | return count; | |
916 | } | |
917 | ||
918 | ||
919 | static ssize_t sn9c102_show_val(struct class_device* cd, char* buf) | |
920 | { | |
921 | struct sn9c102_device* cam; | |
922 | ssize_t count; | |
923 | int val; | |
924 | ||
925 | if (down_interruptible(&sn9c102_sysfs_lock)) | |
926 | return -ERESTARTSYS; | |
927 | ||
928 | cam = video_get_drvdata(to_video_device(cd)); | |
929 | if (!cam) { | |
930 | up(&sn9c102_sysfs_lock); | |
931 | return -ENODEV; | |
932 | } | |
933 | ||
934 | if ((val = sn9c102_read_reg(cam, cam->sysfs.reg)) < 0) { | |
935 | up(&sn9c102_sysfs_lock); | |
936 | return -EIO; | |
937 | } | |
938 | ||
939 | count = sprintf(buf, "%d\n", val); | |
940 | ||
a966f3e7 | 941 | DBG(3, "Read bytes: %zd", count); |
1da177e4 LT |
942 | |
943 | up(&sn9c102_sysfs_lock); | |
944 | ||
945 | return count; | |
946 | } | |
947 | ||
948 | ||
949 | static ssize_t | |
950 | sn9c102_store_val(struct class_device* cd, const char* buf, size_t len) | |
951 | { | |
952 | struct sn9c102_device* cam; | |
953 | u8 value; | |
954 | ssize_t count; | |
955 | int err; | |
956 | ||
957 | if (down_interruptible(&sn9c102_sysfs_lock)) | |
958 | return -ERESTARTSYS; | |
959 | ||
960 | cam = video_get_drvdata(to_video_device(cd)); | |
961 | if (!cam) { | |
962 | up(&sn9c102_sysfs_lock); | |
963 | return -ENODEV; | |
964 | } | |
965 | ||
966 | value = sn9c102_strtou8(buf, len, &count); | |
967 | if (!count) { | |
968 | up(&sn9c102_sysfs_lock); | |
969 | return -EINVAL; | |
970 | } | |
971 | ||
972 | err = sn9c102_write_reg(cam, value, cam->sysfs.reg); | |
973 | if (err) { | |
974 | up(&sn9c102_sysfs_lock); | |
975 | return -EIO; | |
976 | } | |
977 | ||
978 | DBG(2, "Written SN9C10X reg. 0x%02X, val. 0x%02X", | |
a966f3e7 LR |
979 | cam->sysfs.reg, value); |
980 | DBG(3, "Written bytes: %zd", count); | |
1da177e4 LT |
981 | |
982 | up(&sn9c102_sysfs_lock); | |
983 | ||
984 | return count; | |
985 | } | |
986 | ||
987 | ||
988 | static ssize_t sn9c102_show_i2c_reg(struct class_device* cd, char* buf) | |
989 | { | |
990 | struct sn9c102_device* cam; | |
991 | ssize_t count; | |
992 | ||
993 | if (down_interruptible(&sn9c102_sysfs_lock)) | |
994 | return -ERESTARTSYS; | |
995 | ||
996 | cam = video_get_drvdata(to_video_device(cd)); | |
997 | if (!cam) { | |
998 | up(&sn9c102_sysfs_lock); | |
999 | return -ENODEV; | |
1000 | } | |
1001 | ||
1002 | count = sprintf(buf, "%u\n", cam->sysfs.i2c_reg); | |
1003 | ||
a966f3e7 | 1004 | DBG(3, "Read bytes: %zd", count); |
1da177e4 LT |
1005 | |
1006 | up(&sn9c102_sysfs_lock); | |
1007 | ||
1008 | return count; | |
1009 | } | |
1010 | ||
1011 | ||
1012 | static ssize_t | |
1013 | sn9c102_store_i2c_reg(struct class_device* cd, const char* buf, size_t len) | |
1014 | { | |
1015 | struct sn9c102_device* cam; | |
1016 | u8 index; | |
1017 | ssize_t count; | |
1018 | ||
1019 | if (down_interruptible(&sn9c102_sysfs_lock)) | |
1020 | return -ERESTARTSYS; | |
1021 | ||
1022 | cam = video_get_drvdata(to_video_device(cd)); | |
1023 | if (!cam) { | |
1024 | up(&sn9c102_sysfs_lock); | |
1025 | return -ENODEV; | |
1026 | } | |
1027 | ||
1028 | index = sn9c102_strtou8(buf, len, &count); | |
1029 | if (!count) { | |
1030 | up(&sn9c102_sysfs_lock); | |
1031 | return -EINVAL; | |
1032 | } | |
1033 | ||
1034 | cam->sysfs.i2c_reg = index; | |
1035 | ||
a966f3e7 LR |
1036 | DBG(2, "Moved sensor register index to 0x%02X", cam->sysfs.i2c_reg); |
1037 | DBG(3, "Written bytes: %zd", count); | |
1da177e4 LT |
1038 | |
1039 | up(&sn9c102_sysfs_lock); | |
1040 | ||
1041 | return count; | |
1042 | } | |
1043 | ||
1044 | ||
1045 | static ssize_t sn9c102_show_i2c_val(struct class_device* cd, char* buf) | |
1046 | { | |
1047 | struct sn9c102_device* cam; | |
1048 | ssize_t count; | |
1049 | int val; | |
1050 | ||
1051 | if (down_interruptible(&sn9c102_sysfs_lock)) | |
1052 | return -ERESTARTSYS; | |
1053 | ||
1054 | cam = video_get_drvdata(to_video_device(cd)); | |
1055 | if (!cam) { | |
1056 | up(&sn9c102_sysfs_lock); | |
1057 | return -ENODEV; | |
1058 | } | |
1059 | ||
1060 | if (!(cam->sensor->sysfs_ops & SN9C102_I2C_READ)) { | |
1061 | up(&sn9c102_sysfs_lock); | |
1062 | return -ENOSYS; | |
1063 | } | |
1064 | ||
1065 | if ((val = sn9c102_i2c_read(cam, cam->sysfs.i2c_reg)) < 0) { | |
1066 | up(&sn9c102_sysfs_lock); | |
1067 | return -EIO; | |
1068 | } | |
1069 | ||
1070 | count = sprintf(buf, "%d\n", val); | |
1071 | ||
a966f3e7 | 1072 | DBG(3, "Read bytes: %zd", count); |
1da177e4 LT |
1073 | |
1074 | up(&sn9c102_sysfs_lock); | |
1075 | ||
1076 | return count; | |
1077 | } | |
1078 | ||
1079 | ||
1080 | static ssize_t | |
1081 | sn9c102_store_i2c_val(struct class_device* cd, const char* buf, size_t len) | |
1082 | { | |
1083 | struct sn9c102_device* cam; | |
1084 | u8 value; | |
1085 | ssize_t count; | |
1086 | int err; | |
1087 | ||
1088 | if (down_interruptible(&sn9c102_sysfs_lock)) | |
1089 | return -ERESTARTSYS; | |
1090 | ||
1091 | cam = video_get_drvdata(to_video_device(cd)); | |
1092 | if (!cam) { | |
1093 | up(&sn9c102_sysfs_lock); | |
1094 | return -ENODEV; | |
1095 | } | |
1096 | ||
1097 | if (!(cam->sensor->sysfs_ops & SN9C102_I2C_WRITE)) { | |
1098 | up(&sn9c102_sysfs_lock); | |
1099 | return -ENOSYS; | |
1100 | } | |
1101 | ||
1102 | value = sn9c102_strtou8(buf, len, &count); | |
1103 | if (!count) { | |
1104 | up(&sn9c102_sysfs_lock); | |
1105 | return -EINVAL; | |
1106 | } | |
1107 | ||
1108 | err = sn9c102_i2c_write(cam, cam->sysfs.i2c_reg, value); | |
1109 | if (err) { | |
1110 | up(&sn9c102_sysfs_lock); | |
1111 | return -EIO; | |
1112 | } | |
1113 | ||
1114 | DBG(2, "Written sensor reg. 0x%02X, val. 0x%02X", | |
a966f3e7 LR |
1115 | cam->sysfs.i2c_reg, value); |
1116 | DBG(3, "Written bytes: %zd", count); | |
1da177e4 LT |
1117 | |
1118 | up(&sn9c102_sysfs_lock); | |
1119 | ||
1120 | return count; | |
1121 | } | |
1122 | ||
1123 | ||
1124 | static ssize_t | |
1125 | sn9c102_store_green(struct class_device* cd, const char* buf, size_t len) | |
1126 | { | |
1127 | struct sn9c102_device* cam; | |
1128 | enum sn9c102_bridge bridge; | |
1129 | ssize_t res = 0; | |
1130 | u8 value; | |
1131 | ssize_t count; | |
1132 | ||
1133 | if (down_interruptible(&sn9c102_sysfs_lock)) | |
1134 | return -ERESTARTSYS; | |
1135 | ||
1136 | cam = video_get_drvdata(to_video_device(cd)); | |
1137 | if (!cam) { | |
1138 | up(&sn9c102_sysfs_lock); | |
1139 | return -ENODEV; | |
1140 | } | |
1141 | ||
1142 | bridge = cam->bridge; | |
1143 | ||
1144 | up(&sn9c102_sysfs_lock); | |
1145 | ||
1146 | value = sn9c102_strtou8(buf, len, &count); | |
1147 | if (!count) | |
1148 | return -EINVAL; | |
1149 | ||
1150 | switch (bridge) { | |
1151 | case BRIDGE_SN9C101: | |
1152 | case BRIDGE_SN9C102: | |
1153 | if (value > 0x0f) | |
1154 | return -EINVAL; | |
1155 | if ((res = sn9c102_store_reg(cd, "0x11", 4)) >= 0) | |
1156 | res = sn9c102_store_val(cd, buf, len); | |
1157 | break; | |
1158 | case BRIDGE_SN9C103: | |
1159 | if (value > 0x7f) | |
1160 | return -EINVAL; | |
1161 | if ((res = sn9c102_store_reg(cd, "0x04", 4)) >= 0) | |
1162 | res = sn9c102_store_val(cd, buf, len); | |
1163 | break; | |
1164 | } | |
1165 | ||
1166 | return res; | |
1167 | } | |
1168 | ||
1169 | ||
1170 | static ssize_t | |
1171 | sn9c102_store_blue(struct class_device* cd, const char* buf, size_t len) | |
1172 | { | |
1173 | ssize_t res = 0; | |
1174 | u8 value; | |
1175 | ssize_t count; | |
1176 | ||
1177 | value = sn9c102_strtou8(buf, len, &count); | |
1178 | if (!count || value > 0x7f) | |
1179 | return -EINVAL; | |
1180 | ||
1181 | if ((res = sn9c102_store_reg(cd, "0x06", 4)) >= 0) | |
1182 | res = sn9c102_store_val(cd, buf, len); | |
1183 | ||
1184 | return res; | |
1185 | } | |
1186 | ||
1187 | ||
1188 | static ssize_t | |
1189 | sn9c102_store_red(struct class_device* cd, const char* buf, size_t len) | |
1190 | { | |
1191 | ssize_t res = 0; | |
1192 | u8 value; | |
1193 | ssize_t count; | |
1194 | ||
1195 | value = sn9c102_strtou8(buf, len, &count); | |
1196 | if (!count || value > 0x7f) | |
1197 | return -EINVAL; | |
1198 | ||
1199 | if ((res = sn9c102_store_reg(cd, "0x05", 4)) >= 0) | |
1200 | res = sn9c102_store_val(cd, buf, len); | |
1201 | ||
1202 | return res; | |
1203 | } | |
1204 | ||
1205 | ||
1206 | static ssize_t sn9c102_show_frame_header(struct class_device* cd, char* buf) | |
1207 | { | |
1208 | struct sn9c102_device* cam; | |
1209 | ssize_t count; | |
1210 | ||
1211 | cam = video_get_drvdata(to_video_device(cd)); | |
1212 | if (!cam) | |
1213 | return -ENODEV; | |
1214 | ||
1215 | count = sizeof(cam->sysfs.frame_header); | |
1216 | memcpy(buf, cam->sysfs.frame_header, count); | |
1217 | ||
a966f3e7 | 1218 | DBG(3, "Frame header, read bytes: %zd", count); |
1da177e4 LT |
1219 | |
1220 | return count; | |
1221 | } | |
1222 | ||
1223 | ||
1224 | static CLASS_DEVICE_ATTR(reg, S_IRUGO | S_IWUSR, | |
1225 | sn9c102_show_reg, sn9c102_store_reg); | |
1226 | static CLASS_DEVICE_ATTR(val, S_IRUGO | S_IWUSR, | |
1227 | sn9c102_show_val, sn9c102_store_val); | |
1228 | static CLASS_DEVICE_ATTR(i2c_reg, S_IRUGO | S_IWUSR, | |
1229 | sn9c102_show_i2c_reg, sn9c102_store_i2c_reg); | |
1230 | static CLASS_DEVICE_ATTR(i2c_val, S_IRUGO | S_IWUSR, | |
1231 | sn9c102_show_i2c_val, sn9c102_store_i2c_val); | |
1232 | static CLASS_DEVICE_ATTR(green, S_IWUGO, NULL, sn9c102_store_green); | |
1233 | static CLASS_DEVICE_ATTR(blue, S_IWUGO, NULL, sn9c102_store_blue); | |
1234 | static CLASS_DEVICE_ATTR(red, S_IWUGO, NULL, sn9c102_store_red); | |
1235 | static CLASS_DEVICE_ATTR(frame_header, S_IRUGO, | |
1236 | sn9c102_show_frame_header, NULL); | |
1237 | ||
1238 | ||
1239 | static void sn9c102_create_sysfs(struct sn9c102_device* cam) | |
1240 | { | |
1241 | struct video_device *v4ldev = cam->v4ldev; | |
1242 | ||
1243 | video_device_create_file(v4ldev, &class_device_attr_reg); | |
1244 | video_device_create_file(v4ldev, &class_device_attr_val); | |
1245 | video_device_create_file(v4ldev, &class_device_attr_frame_header); | |
1246 | if (cam->bridge == BRIDGE_SN9C101 || cam->bridge == BRIDGE_SN9C102) | |
1247 | video_device_create_file(v4ldev, &class_device_attr_green); | |
1248 | else if (cam->bridge == BRIDGE_SN9C103) { | |
1249 | video_device_create_file(v4ldev, &class_device_attr_blue); | |
1250 | video_device_create_file(v4ldev, &class_device_attr_red); | |
1251 | } | |
a966f3e7 | 1252 | if (cam->sensor && cam->sensor->sysfs_ops) { |
1da177e4 LT |
1253 | video_device_create_file(v4ldev, &class_device_attr_i2c_reg); |
1254 | video_device_create_file(v4ldev, &class_device_attr_i2c_val); | |
1255 | } | |
1256 | } | |
cd6fcc55 | 1257 | #endif /* CONFIG_VIDEO_ADV_DEBUG */ |
1da177e4 LT |
1258 | |
1259 | /*****************************************************************************/ | |
1260 | ||
1261 | static int | |
1262 | sn9c102_set_pix_format(struct sn9c102_device* cam, struct v4l2_pix_format* pix) | |
1263 | { | |
1264 | int err = 0; | |
1265 | ||
1266 | if (pix->pixelformat == V4L2_PIX_FMT_SN9C10X) | |
1267 | err += sn9c102_write_reg(cam, cam->reg[0x18] | 0x80, 0x18); | |
1268 | else | |
1269 | err += sn9c102_write_reg(cam, cam->reg[0x18] & 0x7f, 0x18); | |
1270 | ||
1271 | return err ? -EIO : 0; | |
1272 | } | |
1273 | ||
1274 | ||
1275 | static int | |
1276 | sn9c102_set_compression(struct sn9c102_device* cam, | |
1277 | struct v4l2_jpegcompression* compression) | |
1278 | { | |
1279 | int err = 0; | |
1280 | ||
1281 | if (compression->quality == 0) | |
1282 | err += sn9c102_write_reg(cam, cam->reg[0x17] | 0x01, 0x17); | |
1283 | else if (compression->quality == 1) | |
1284 | err += sn9c102_write_reg(cam, cam->reg[0x17] & 0xfe, 0x17); | |
1285 | ||
1286 | return err ? -EIO : 0; | |
1287 | } | |
1288 | ||
1289 | ||
1290 | static int sn9c102_set_scale(struct sn9c102_device* cam, u8 scale) | |
1291 | { | |
1292 | u8 r = 0; | |
1293 | int err = 0; | |
1294 | ||
1295 | if (scale == 1) | |
1296 | r = cam->reg[0x18] & 0xcf; | |
1297 | else if (scale == 2) { | |
1298 | r = cam->reg[0x18] & 0xcf; | |
1299 | r |= 0x10; | |
1300 | } else if (scale == 4) | |
1301 | r = cam->reg[0x18] | 0x20; | |
1302 | ||
1303 | err += sn9c102_write_reg(cam, r, 0x18); | |
1304 | if (err) | |
1305 | return -EIO; | |
1306 | ||
a966f3e7 | 1307 | PDBGG("Scaling factor: %u", scale); |
1da177e4 LT |
1308 | |
1309 | return 0; | |
1310 | } | |
1311 | ||
1312 | ||
1313 | static int sn9c102_set_crop(struct sn9c102_device* cam, struct v4l2_rect* rect) | |
1314 | { | |
1315 | struct sn9c102_sensor* s = cam->sensor; | |
1316 | u8 h_start = (u8)(rect->left - s->cropcap.bounds.left), | |
1317 | v_start = (u8)(rect->top - s->cropcap.bounds.top), | |
1318 | h_size = (u8)(rect->width / 16), | |
1319 | v_size = (u8)(rect->height / 16); | |
1320 | int err = 0; | |
1321 | ||
1322 | err += sn9c102_write_reg(cam, h_start, 0x12); | |
1323 | err += sn9c102_write_reg(cam, v_start, 0x13); | |
1324 | err += sn9c102_write_reg(cam, h_size, 0x15); | |
1325 | err += sn9c102_write_reg(cam, v_size, 0x16); | |
1326 | if (err) | |
1327 | return -EIO; | |
1328 | ||
1329 | PDBGG("h_start, v_start, h_size, v_size, ho_size, vo_size " | |
a966f3e7 | 1330 | "%u %u %u %u", h_start, v_start, h_size, v_size); |
1da177e4 LT |
1331 | |
1332 | return 0; | |
1333 | } | |
1334 | ||
1335 | ||
1336 | static int sn9c102_init(struct sn9c102_device* cam) | |
1337 | { | |
1338 | struct sn9c102_sensor* s = cam->sensor; | |
1339 | struct v4l2_control ctrl; | |
1340 | struct v4l2_queryctrl *qctrl; | |
1341 | struct v4l2_rect* rect; | |
52950ed4 | 1342 | u8 i = 0; |
1da177e4 LT |
1343 | int err = 0; |
1344 | ||
1345 | if (!(cam->state & DEV_INITIALIZED)) { | |
1346 | init_waitqueue_head(&cam->open); | |
1347 | qctrl = s->qctrl; | |
1348 | rect = &(s->cropcap.defrect); | |
1349 | } else { /* use current values */ | |
1350 | qctrl = s->_qctrl; | |
1351 | rect = &(s->_rect); | |
1352 | } | |
1353 | ||
1354 | err += sn9c102_set_scale(cam, rect->width / s->pix_format.width); | |
1355 | err += sn9c102_set_crop(cam, rect); | |
1356 | if (err) | |
1357 | return err; | |
1358 | ||
1359 | if (s->init) { | |
1360 | err = s->init(cam); | |
1361 | if (err) { | |
a966f3e7 | 1362 | DBG(3, "Sensor initialization failed"); |
1da177e4 LT |
1363 | return err; |
1364 | } | |
1365 | } | |
1366 | ||
1367 | if (!(cam->state & DEV_INITIALIZED)) | |
1368 | cam->compression.quality = cam->reg[0x17] & 0x01 ? 0 : 1; | |
1369 | else | |
1370 | err += sn9c102_set_compression(cam, &cam->compression); | |
1371 | err += sn9c102_set_pix_format(cam, &s->pix_format); | |
1372 | if (s->set_pix_format) | |
1373 | err += s->set_pix_format(cam, &s->pix_format); | |
1374 | if (err) | |
1375 | return err; | |
1376 | ||
1377 | if (s->pix_format.pixelformat == V4L2_PIX_FMT_SN9C10X) | |
52950ed4 | 1378 | DBG(3, "Compressed video format is active, quality %d", |
a966f3e7 | 1379 | cam->compression.quality); |
1da177e4 | 1380 | else |
a966f3e7 | 1381 | DBG(3, "Uncompressed video format is active"); |
1da177e4 LT |
1382 | |
1383 | if (s->set_crop) | |
1384 | if ((err = s->set_crop(cam, rect))) { | |
a966f3e7 | 1385 | DBG(3, "set_crop() failed"); |
1da177e4 LT |
1386 | return err; |
1387 | } | |
1388 | ||
1389 | if (s->set_ctrl) { | |
52950ed4 TK |
1390 | for (i = 0; i < ARRAY_SIZE(s->qctrl); i++) |
1391 | if (s->qctrl[i].id != 0 && | |
1da177e4 LT |
1392 | !(s->qctrl[i].flags & V4L2_CTRL_FLAG_DISABLED)) { |
1393 | ctrl.id = s->qctrl[i].id; | |
1394 | ctrl.value = qctrl[i].default_value; | |
1395 | err = s->set_ctrl(cam, &ctrl); | |
1396 | if (err) { | |
1397 | DBG(3, "Set %s control failed", | |
a966f3e7 | 1398 | s->qctrl[i].name); |
1da177e4 LT |
1399 | return err; |
1400 | } | |
1401 | DBG(3, "Image sensor supports '%s' control", | |
a966f3e7 | 1402 | s->qctrl[i].name); |
1da177e4 LT |
1403 | } |
1404 | } | |
1405 | ||
1406 | if (!(cam->state & DEV_INITIALIZED)) { | |
1407 | init_MUTEX(&cam->fileop_sem); | |
1408 | spin_lock_init(&cam->queue_lock); | |
1409 | init_waitqueue_head(&cam->wait_frame); | |
1410 | init_waitqueue_head(&cam->wait_stream); | |
1411 | cam->nreadbuffers = 2; | |
1412 | memcpy(s->_qctrl, s->qctrl, sizeof(s->qctrl)); | |
52950ed4 | 1413 | memcpy(&(s->_rect), &(s->cropcap.defrect), |
1da177e4 LT |
1414 | sizeof(struct v4l2_rect)); |
1415 | cam->state |= DEV_INITIALIZED; | |
1416 | } | |
1417 | ||
a966f3e7 | 1418 | DBG(2, "Initialization succeeded"); |
1da177e4 LT |
1419 | return 0; |
1420 | } | |
1421 | ||
1422 | ||
1423 | static void sn9c102_release_resources(struct sn9c102_device* cam) | |
1424 | { | |
1425 | down(&sn9c102_sysfs_lock); | |
1426 | ||
a966f3e7 | 1427 | DBG(2, "V4L2 device /dev/video%d deregistered", cam->v4ldev->minor); |
1da177e4 LT |
1428 | video_set_drvdata(cam->v4ldev, NULL); |
1429 | video_unregister_device(cam->v4ldev); | |
1430 | ||
1431 | up(&sn9c102_sysfs_lock); | |
1432 | ||
1433 | kfree(cam->control_buffer); | |
1434 | } | |
1435 | ||
1436 | /*****************************************************************************/ | |
1437 | ||
1438 | static int sn9c102_open(struct inode* inode, struct file* filp) | |
1439 | { | |
1440 | struct sn9c102_device* cam; | |
1441 | int err = 0; | |
1442 | ||
1443 | /* | |
1444 | This is the only safe way to prevent race conditions with | |
1445 | disconnect | |
1446 | */ | |
1447 | if (!down_read_trylock(&sn9c102_disconnect)) | |
1448 | return -ERESTARTSYS; | |
1449 | ||
1450 | cam = video_get_drvdata(video_devdata(filp)); | |
1451 | ||
1452 | if (down_interruptible(&cam->dev_sem)) { | |
1453 | up_read(&sn9c102_disconnect); | |
1454 | return -ERESTARTSYS; | |
1455 | } | |
1456 | ||
1457 | if (cam->users) { | |
a966f3e7 | 1458 | DBG(2, "Device /dev/video%d is busy...", cam->v4ldev->minor); |
1da177e4 LT |
1459 | if ((filp->f_flags & O_NONBLOCK) || |
1460 | (filp->f_flags & O_NDELAY)) { | |
1461 | err = -EWOULDBLOCK; | |
1462 | goto out; | |
1463 | } | |
1464 | up(&cam->dev_sem); | |
1465 | err = wait_event_interruptible_exclusive(cam->open, | |
1466 | cam->state & DEV_DISCONNECTED | |
1467 | || !cam->users); | |
1468 | if (err) { | |
1469 | up_read(&sn9c102_disconnect); | |
1470 | return err; | |
1471 | } | |
1472 | if (cam->state & DEV_DISCONNECTED) { | |
1473 | up_read(&sn9c102_disconnect); | |
1474 | return -ENODEV; | |
1475 | } | |
1476 | down(&cam->dev_sem); | |
1477 | } | |
1478 | ||
1479 | ||
1480 | if (cam->state & DEV_MISCONFIGURED) { | |
1481 | err = sn9c102_init(cam); | |
1482 | if (err) { | |
1483 | DBG(1, "Initialization failed again. " | |
a966f3e7 | 1484 | "I will retry on next open()."); |
1da177e4 LT |
1485 | goto out; |
1486 | } | |
1487 | cam->state &= ~DEV_MISCONFIGURED; | |
1488 | } | |
1489 | ||
1490 | if ((err = sn9c102_start_transfer(cam))) | |
1491 | goto out; | |
1492 | ||
1493 | filp->private_data = cam; | |
1494 | cam->users++; | |
1495 | cam->io = IO_NONE; | |
1496 | cam->stream = STREAM_OFF; | |
1497 | cam->nbuffers = 0; | |
1498 | cam->frame_count = 0; | |
1499 | sn9c102_empty_framequeues(cam); | |
1500 | ||
a966f3e7 | 1501 | DBG(3, "Video device /dev/video%d is open", cam->v4ldev->minor); |
1da177e4 LT |
1502 | |
1503 | out: | |
1504 | up(&cam->dev_sem); | |
1505 | up_read(&sn9c102_disconnect); | |
1506 | return err; | |
1507 | } | |
1508 | ||
1509 | ||
1510 | static int sn9c102_release(struct inode* inode, struct file* filp) | |
1511 | { | |
1512 | struct sn9c102_device* cam = video_get_drvdata(video_devdata(filp)); | |
1513 | ||
1514 | down(&cam->dev_sem); /* prevent disconnect() to be called */ | |
1515 | ||
1516 | sn9c102_stop_transfer(cam); | |
1517 | ||
1518 | sn9c102_release_buffers(cam); | |
1519 | ||
1520 | if (cam->state & DEV_DISCONNECTED) { | |
1521 | sn9c102_release_resources(cam); | |
1522 | up(&cam->dev_sem); | |
1523 | kfree(cam); | |
1524 | return 0; | |
1525 | } | |
1526 | ||
1527 | cam->users--; | |
1528 | wake_up_interruptible_nr(&cam->open, 1); | |
1529 | ||
a966f3e7 | 1530 | DBG(3, "Video device /dev/video%d closed", cam->v4ldev->minor); |
1da177e4 LT |
1531 | |
1532 | up(&cam->dev_sem); | |
1533 | ||
1534 | return 0; | |
1535 | } | |
1536 | ||
1537 | ||
1538 | static ssize_t | |
1539 | sn9c102_read(struct file* filp, char __user * buf, size_t count, loff_t* f_pos) | |
1540 | { | |
1541 | struct sn9c102_device* cam = video_get_drvdata(video_devdata(filp)); | |
1542 | struct sn9c102_frame_t* f, * i; | |
1543 | unsigned long lock_flags; | |
1544 | int err = 0; | |
1545 | ||
1546 | if (down_interruptible(&cam->fileop_sem)) | |
1547 | return -ERESTARTSYS; | |
1548 | ||
1549 | if (cam->state & DEV_DISCONNECTED) { | |
a966f3e7 | 1550 | DBG(1, "Device not present"); |
1da177e4 LT |
1551 | up(&cam->fileop_sem); |
1552 | return -ENODEV; | |
1553 | } | |
1554 | ||
1555 | if (cam->state & DEV_MISCONFIGURED) { | |
a966f3e7 LR |
1556 | DBG(1, "The camera is misconfigured. Close and open it " |
1557 | "again."); | |
1da177e4 LT |
1558 | up(&cam->fileop_sem); |
1559 | return -EIO; | |
1560 | } | |
1561 | ||
1562 | if (cam->io == IO_MMAP) { | |
1563 | DBG(3, "Close and open the device again to choose " | |
a966f3e7 | 1564 | "the read method"); |
1da177e4 LT |
1565 | up(&cam->fileop_sem); |
1566 | return -EINVAL; | |
1567 | } | |
1568 | ||
1569 | if (cam->io == IO_NONE) { | |
1570 | if (!sn9c102_request_buffers(cam,cam->nreadbuffers, IO_READ)) { | |
a966f3e7 | 1571 | DBG(1, "read() failed, not enough memory"); |
1da177e4 LT |
1572 | up(&cam->fileop_sem); |
1573 | return -ENOMEM; | |
1574 | } | |
1575 | cam->io = IO_READ; | |
1576 | cam->stream = STREAM_ON; | |
a966f3e7 LR |
1577 | } |
1578 | ||
1579 | if (list_empty(&cam->inqueue)) { | |
1580 | if (!list_empty(&cam->outqueue)) | |
1581 | sn9c102_empty_framequeues(cam); | |
1da177e4 LT |
1582 | sn9c102_queue_unusedframes(cam); |
1583 | } | |
1584 | ||
1585 | if (!count) { | |
1586 | up(&cam->fileop_sem); | |
1587 | return 0; | |
1588 | } | |
1589 | ||
1590 | if (list_empty(&cam->outqueue)) { | |
1591 | if (filp->f_flags & O_NONBLOCK) { | |
1592 | up(&cam->fileop_sem); | |
1593 | return -EAGAIN; | |
1594 | } | |
1595 | err = wait_event_interruptible | |
1596 | ( cam->wait_frame, | |
1597 | (!list_empty(&cam->outqueue)) || | |
1598 | (cam->state & DEV_DISCONNECTED) || | |
1599 | (cam->state & DEV_MISCONFIGURED) ); | |
1600 | if (err) { | |
1601 | up(&cam->fileop_sem); | |
1602 | return err; | |
1603 | } | |
1604 | if (cam->state & DEV_DISCONNECTED) { | |
1605 | up(&cam->fileop_sem); | |
1606 | return -ENODEV; | |
1607 | } | |
1608 | if (cam->state & DEV_MISCONFIGURED) { | |
1609 | up(&cam->fileop_sem); | |
1610 | return -EIO; | |
1611 | } | |
1612 | } | |
1613 | ||
1614 | f = list_entry(cam->outqueue.prev, struct sn9c102_frame_t, frame); | |
1615 | ||
a966f3e7 LR |
1616 | if (count > f->buf.bytesused) |
1617 | count = f->buf.bytesused; | |
1618 | ||
1619 | if (copy_to_user(buf, f->bufmem, count)) { | |
1620 | err = -EFAULT; | |
1621 | goto exit; | |
1622 | } | |
1623 | *f_pos += count; | |
1624 | ||
1625 | exit: | |
1da177e4 LT |
1626 | spin_lock_irqsave(&cam->queue_lock, lock_flags); |
1627 | list_for_each_entry(i, &cam->outqueue, frame) | |
1628 | i->state = F_UNUSED; | |
1629 | INIT_LIST_HEAD(&cam->outqueue); | |
1630 | spin_unlock_irqrestore(&cam->queue_lock, lock_flags); | |
1631 | ||
1632 | sn9c102_queue_unusedframes(cam); | |
1633 | ||
a966f3e7 LR |
1634 | PDBGG("Frame #%lu, bytes read: %zu", |
1635 | (unsigned long)f->buf.index, count); | |
1da177e4 LT |
1636 | |
1637 | up(&cam->fileop_sem); | |
1638 | ||
1639 | return count; | |
1640 | } | |
1641 | ||
1642 | ||
1643 | static unsigned int sn9c102_poll(struct file *filp, poll_table *wait) | |
1644 | { | |
1645 | struct sn9c102_device* cam = video_get_drvdata(video_devdata(filp)); | |
a966f3e7 LR |
1646 | struct sn9c102_frame_t* f; |
1647 | unsigned long lock_flags; | |
1da177e4 LT |
1648 | unsigned int mask = 0; |
1649 | ||
1650 | if (down_interruptible(&cam->fileop_sem)) | |
1651 | return POLLERR; | |
1652 | ||
1653 | if (cam->state & DEV_DISCONNECTED) { | |
a966f3e7 | 1654 | DBG(1, "Device not present"); |
1da177e4 LT |
1655 | goto error; |
1656 | } | |
1657 | ||
1658 | if (cam->state & DEV_MISCONFIGURED) { | |
a966f3e7 LR |
1659 | DBG(1, "The camera is misconfigured. Close and open it " |
1660 | "again."); | |
1da177e4 LT |
1661 | goto error; |
1662 | } | |
1663 | ||
1664 | if (cam->io == IO_NONE) { | |
1665 | if (!sn9c102_request_buffers(cam, cam->nreadbuffers, | |
1666 | IO_READ)) { | |
a966f3e7 | 1667 | DBG(1, "poll() failed, not enough memory"); |
1da177e4 LT |
1668 | goto error; |
1669 | } | |
1670 | cam->io = IO_READ; | |
1671 | cam->stream = STREAM_ON; | |
1672 | } | |
1673 | ||
a966f3e7 LR |
1674 | if (cam->io == IO_READ) { |
1675 | spin_lock_irqsave(&cam->queue_lock, lock_flags); | |
1676 | list_for_each_entry(f, &cam->outqueue, frame) | |
1677 | f->state = F_UNUSED; | |
1678 | INIT_LIST_HEAD(&cam->outqueue); | |
1679 | spin_unlock_irqrestore(&cam->queue_lock, lock_flags); | |
1da177e4 | 1680 | sn9c102_queue_unusedframes(cam); |
a966f3e7 | 1681 | } |
1da177e4 LT |
1682 | |
1683 | poll_wait(filp, &cam->wait_frame, wait); | |
1684 | ||
1685 | if (!list_empty(&cam->outqueue)) | |
1686 | mask |= POLLIN | POLLRDNORM; | |
1687 | ||
1688 | up(&cam->fileop_sem); | |
1689 | ||
1690 | return mask; | |
1691 | ||
1692 | error: | |
1693 | up(&cam->fileop_sem); | |
1694 | return POLLERR; | |
1695 | } | |
1696 | ||
1697 | ||
1698 | static void sn9c102_vm_open(struct vm_area_struct* vma) | |
1699 | { | |
1700 | struct sn9c102_frame_t* f = vma->vm_private_data; | |
1701 | f->vma_use_count++; | |
1702 | } | |
1703 | ||
1704 | ||
1705 | static void sn9c102_vm_close(struct vm_area_struct* vma) | |
1706 | { | |
1707 | /* NOTE: buffers are not freed here */ | |
1708 | struct sn9c102_frame_t* f = vma->vm_private_data; | |
1709 | f->vma_use_count--; | |
1710 | } | |
1711 | ||
1712 | ||
1713 | static struct vm_operations_struct sn9c102_vm_ops = { | |
1714 | .open = sn9c102_vm_open, | |
1715 | .close = sn9c102_vm_close, | |
1716 | }; | |
1717 | ||
1718 | ||
1719 | static int sn9c102_mmap(struct file* filp, struct vm_area_struct *vma) | |
1720 | { | |
1721 | struct sn9c102_device* cam = video_get_drvdata(video_devdata(filp)); | |
1722 | unsigned long size = vma->vm_end - vma->vm_start, | |
cd6fcc55 LR |
1723 | start = vma->vm_start; |
1724 | void *pos; | |
1da177e4 LT |
1725 | u32 i; |
1726 | ||
1727 | if (down_interruptible(&cam->fileop_sem)) | |
1728 | return -ERESTARTSYS; | |
1729 | ||
1730 | if (cam->state & DEV_DISCONNECTED) { | |
a966f3e7 | 1731 | DBG(1, "Device not present"); |
1da177e4 LT |
1732 | up(&cam->fileop_sem); |
1733 | return -ENODEV; | |
1734 | } | |
1735 | ||
1736 | if (cam->state & DEV_MISCONFIGURED) { | |
a966f3e7 LR |
1737 | DBG(1, "The camera is misconfigured. Close and open it " |
1738 | "again."); | |
1da177e4 LT |
1739 | up(&cam->fileop_sem); |
1740 | return -EIO; | |
1741 | } | |
1742 | ||
1743 | if (cam->io != IO_MMAP || !(vma->vm_flags & VM_WRITE) || | |
1744 | size != PAGE_ALIGN(cam->frame[0].buf.length)) { | |
1745 | up(&cam->fileop_sem); | |
1746 | return -EINVAL; | |
1747 | } | |
1748 | ||
1749 | for (i = 0; i < cam->nbuffers; i++) { | |
1750 | if ((cam->frame[i].buf.m.offset>>PAGE_SHIFT) == vma->vm_pgoff) | |
1751 | break; | |
1752 | } | |
1753 | if (i == cam->nbuffers) { | |
1754 | up(&cam->fileop_sem); | |
1755 | return -EINVAL; | |
1756 | } | |
1757 | ||
1da177e4 | 1758 | vma->vm_flags |= VM_IO; |
cd6fcc55 | 1759 | vma->vm_flags |= VM_RESERVED; |
1da177e4 | 1760 | |
cd6fcc55 | 1761 | pos = cam->frame[i].bufmem; |
1da177e4 | 1762 | while (size > 0) { /* size is page-aligned */ |
cd6fcc55 | 1763 | if (vm_insert_page(vma, start, vmalloc_to_page(pos))) { |
1da177e4 LT |
1764 | up(&cam->fileop_sem); |
1765 | return -EAGAIN; | |
1766 | } | |
1767 | start += PAGE_SIZE; | |
1768 | pos += PAGE_SIZE; | |
1769 | size -= PAGE_SIZE; | |
1770 | } | |
1771 | ||
1772 | vma->vm_ops = &sn9c102_vm_ops; | |
1773 | vma->vm_private_data = &cam->frame[i]; | |
1774 | ||
1775 | sn9c102_vm_open(vma); | |
1776 | ||
1777 | up(&cam->fileop_sem); | |
1778 | ||
1779 | return 0; | |
1780 | } | |
1781 | ||
a966f3e7 | 1782 | /*****************************************************************************/ |
1da177e4 | 1783 | |
a966f3e7 LR |
1784 | static int |
1785 | sn9c102_vidioc_querycap(struct sn9c102_device* cam, void __user * arg) | |
1da177e4 | 1786 | { |
a966f3e7 LR |
1787 | struct v4l2_capability cap = { |
1788 | .driver = "sn9c102", | |
1789 | .version = SN9C102_MODULE_VERSION_CODE, | |
1790 | .capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_READWRITE | | |
1791 | V4L2_CAP_STREAMING, | |
1792 | }; | |
1793 | ||
1794 | strlcpy(cap.card, cam->v4ldev->name, sizeof(cap.card)); | |
1795 | if (usb_make_path(cam->usbdev, cap.bus_info, sizeof(cap.bus_info)) < 0) | |
cd6fcc55 LR |
1796 | strlcpy(cap.bus_info, cam->usbdev->dev.bus_id, |
1797 | sizeof(cap.bus_info)); | |
a966f3e7 LR |
1798 | |
1799 | if (copy_to_user(arg, &cap, sizeof(cap))) | |
1800 | return -EFAULT; | |
1da177e4 | 1801 | |
a966f3e7 LR |
1802 | return 0; |
1803 | } | |
1da177e4 | 1804 | |
1da177e4 | 1805 | |
a966f3e7 LR |
1806 | static int |
1807 | sn9c102_vidioc_enuminput(struct sn9c102_device* cam, void __user * arg) | |
1808 | { | |
1809 | struct v4l2_input i; | |
1da177e4 | 1810 | |
a966f3e7 LR |
1811 | if (copy_from_user(&i, arg, sizeof(i))) |
1812 | return -EFAULT; | |
1da177e4 | 1813 | |
a966f3e7 LR |
1814 | if (i.index) |
1815 | return -EINVAL; | |
1da177e4 | 1816 | |
a966f3e7 | 1817 | memset(&i, 0, sizeof(i)); |
cd6fcc55 | 1818 | strcpy(i.name, "Camera"); |
1da177e4 | 1819 | |
a966f3e7 LR |
1820 | if (copy_to_user(arg, &i, sizeof(i))) |
1821 | return -EFAULT; | |
1da177e4 | 1822 | |
a966f3e7 LR |
1823 | return 0; |
1824 | } | |
1da177e4 | 1825 | |
1da177e4 | 1826 | |
a966f3e7 LR |
1827 | static int |
1828 | sn9c102_vidioc_gs_input(struct sn9c102_device* cam, void __user * arg) | |
1829 | { | |
1830 | int index; | |
1da177e4 | 1831 | |
a966f3e7 LR |
1832 | if (copy_from_user(&index, arg, sizeof(index))) |
1833 | return -EFAULT; | |
1da177e4 | 1834 | |
a966f3e7 | 1835 | if (index != 0) |
1da177e4 | 1836 | return -EINVAL; |
1da177e4 | 1837 | |
a966f3e7 LR |
1838 | return 0; |
1839 | } | |
1da177e4 | 1840 | |
1da177e4 | 1841 | |
a966f3e7 LR |
1842 | static int |
1843 | sn9c102_vidioc_query_ctrl(struct sn9c102_device* cam, void __user * arg) | |
1844 | { | |
1845 | struct sn9c102_sensor* s = cam->sensor; | |
1846 | struct v4l2_queryctrl qc; | |
1847 | u8 i; | |
1da177e4 | 1848 | |
a966f3e7 LR |
1849 | if (copy_from_user(&qc, arg, sizeof(qc))) |
1850 | return -EFAULT; | |
1da177e4 | 1851 | |
a966f3e7 LR |
1852 | for (i = 0; i < ARRAY_SIZE(s->qctrl); i++) |
1853 | if (qc.id && qc.id == s->qctrl[i].id) { | |
1854 | memcpy(&qc, &(s->qctrl[i]), sizeof(qc)); | |
1855 | if (copy_to_user(arg, &qc, sizeof(qc))) | |
1856 | return -EFAULT; | |
1857 | return 0; | |
1858 | } | |
1da177e4 | 1859 | |
a966f3e7 LR |
1860 | return -EINVAL; |
1861 | } | |
1da177e4 | 1862 | |
1da177e4 | 1863 | |
a966f3e7 LR |
1864 | static int |
1865 | sn9c102_vidioc_g_ctrl(struct sn9c102_device* cam, void __user * arg) | |
1866 | { | |
1867 | struct sn9c102_sensor* s = cam->sensor; | |
1868 | struct v4l2_control ctrl; | |
1869 | int err = 0; | |
1870 | u8 i; | |
1da177e4 | 1871 | |
a966f3e7 LR |
1872 | if (!s->get_ctrl && !s->set_ctrl) |
1873 | return -EINVAL; | |
1da177e4 | 1874 | |
a966f3e7 LR |
1875 | if (copy_from_user(&ctrl, arg, sizeof(ctrl))) |
1876 | return -EFAULT; | |
1877 | ||
1878 | if (!s->get_ctrl) { | |
52950ed4 | 1879 | for (i = 0; i < ARRAY_SIZE(s->qctrl); i++) |
a966f3e7 LR |
1880 | if (ctrl.id && ctrl.id == s->qctrl[i].id) { |
1881 | ctrl.value = s->_qctrl[i].default_value; | |
1882 | goto exit; | |
1da177e4 | 1883 | } |
a966f3e7 LR |
1884 | return -EINVAL; |
1885 | } else | |
1886 | err = s->get_ctrl(cam, &ctrl); | |
1da177e4 | 1887 | |
a966f3e7 LR |
1888 | exit: |
1889 | if (copy_to_user(arg, &ctrl, sizeof(ctrl))) | |
1890 | return -EFAULT; | |
1da177e4 | 1891 | |
a966f3e7 LR |
1892 | return err; |
1893 | } | |
1da177e4 | 1894 | |
1da177e4 | 1895 | |
a966f3e7 LR |
1896 | static int |
1897 | sn9c102_vidioc_s_ctrl(struct sn9c102_device* cam, void __user * arg) | |
1898 | { | |
1899 | struct sn9c102_sensor* s = cam->sensor; | |
1900 | struct v4l2_control ctrl; | |
1901 | u8 i; | |
1902 | int err = 0; | |
1da177e4 | 1903 | |
a966f3e7 LR |
1904 | if (!s->set_ctrl) |
1905 | return -EINVAL; | |
1da177e4 | 1906 | |
a966f3e7 LR |
1907 | if (copy_from_user(&ctrl, arg, sizeof(ctrl))) |
1908 | return -EFAULT; | |
1da177e4 | 1909 | |
a966f3e7 LR |
1910 | for (i = 0; i < ARRAY_SIZE(s->qctrl); i++) |
1911 | if (ctrl.id == s->qctrl[i].id) { | |
1912 | if (ctrl.value < s->qctrl[i].minimum || | |
1913 | ctrl.value > s->qctrl[i].maximum) | |
1914 | return -ERANGE; | |
1915 | ctrl.value -= ctrl.value % s->qctrl[i].step; | |
1916 | break; | |
1917 | } | |
1da177e4 | 1918 | |
a966f3e7 LR |
1919 | if ((err = s->set_ctrl(cam, &ctrl))) |
1920 | return err; | |
1da177e4 | 1921 | |
a966f3e7 | 1922 | s->_qctrl[i].default_value = ctrl.value; |
1da177e4 | 1923 | |
a966f3e7 LR |
1924 | PDBGG("VIDIOC_S_CTRL: id %lu, value %lu", |
1925 | (unsigned long)ctrl.id, (unsigned long)ctrl.value); | |
1da177e4 | 1926 | |
a966f3e7 LR |
1927 | return 0; |
1928 | } | |
1da177e4 | 1929 | |
1da177e4 | 1930 | |
a966f3e7 LR |
1931 | static int |
1932 | sn9c102_vidioc_cropcap(struct sn9c102_device* cam, void __user * arg) | |
1933 | { | |
1934 | struct v4l2_cropcap* cc = &(cam->sensor->cropcap); | |
1da177e4 | 1935 | |
a966f3e7 LR |
1936 | cc->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
1937 | cc->pixelaspect.numerator = 1; | |
1938 | cc->pixelaspect.denominator = 1; | |
1da177e4 | 1939 | |
a966f3e7 LR |
1940 | if (copy_to_user(arg, cc, sizeof(*cc))) |
1941 | return -EFAULT; | |
1da177e4 | 1942 | |
a966f3e7 LR |
1943 | return 0; |
1944 | } | |
1da177e4 | 1945 | |
1da177e4 | 1946 | |
a966f3e7 LR |
1947 | static int |
1948 | sn9c102_vidioc_g_crop(struct sn9c102_device* cam, void __user * arg) | |
1949 | { | |
1950 | struct sn9c102_sensor* s = cam->sensor; | |
1951 | struct v4l2_crop crop = { | |
1952 | .type = V4L2_BUF_TYPE_VIDEO_CAPTURE, | |
1953 | }; | |
1da177e4 | 1954 | |
a966f3e7 | 1955 | memcpy(&(crop.c), &(s->_rect), sizeof(struct v4l2_rect)); |
1da177e4 | 1956 | |
a966f3e7 LR |
1957 | if (copy_to_user(arg, &crop, sizeof(crop))) |
1958 | return -EFAULT; | |
1da177e4 | 1959 | |
a966f3e7 LR |
1960 | return 0; |
1961 | } | |
1da177e4 | 1962 | |
1da177e4 | 1963 | |
a966f3e7 LR |
1964 | static int |
1965 | sn9c102_vidioc_s_crop(struct sn9c102_device* cam, void __user * arg) | |
1966 | { | |
1967 | struct sn9c102_sensor* s = cam->sensor; | |
1968 | struct v4l2_crop crop; | |
1969 | struct v4l2_rect* rect; | |
1970 | struct v4l2_rect* bounds = &(s->cropcap.bounds); | |
1971 | struct v4l2_pix_format* pix_format = &(s->pix_format); | |
1972 | u8 scale; | |
1973 | const enum sn9c102_stream_state stream = cam->stream; | |
1974 | const u32 nbuffers = cam->nbuffers; | |
1975 | u32 i; | |
1976 | int err = 0; | |
1da177e4 | 1977 | |
a966f3e7 LR |
1978 | if (copy_from_user(&crop, arg, sizeof(crop))) |
1979 | return -EFAULT; | |
1da177e4 | 1980 | |
a966f3e7 | 1981 | rect = &(crop.c); |
1da177e4 | 1982 | |
a966f3e7 LR |
1983 | if (crop.type != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
1984 | return -EINVAL; | |
1da177e4 | 1985 | |
a966f3e7 LR |
1986 | if (cam->module_param.force_munmap) |
1987 | for (i = 0; i < cam->nbuffers; i++) | |
1988 | if (cam->frame[i].vma_use_count) { | |
1989 | DBG(3, "VIDIOC_S_CROP failed. " | |
1990 | "Unmap the buffers first."); | |
1991 | return -EINVAL; | |
1992 | } | |
1da177e4 | 1993 | |
a966f3e7 LR |
1994 | /* Preserve R,G or B origin */ |
1995 | rect->left = (s->_rect.left & 1L) ? rect->left | 1L : rect->left & ~1L; | |
1996 | rect->top = (s->_rect.top & 1L) ? rect->top | 1L : rect->top & ~1L; | |
1997 | ||
1998 | if (rect->width < 16) | |
1999 | rect->width = 16; | |
2000 | if (rect->height < 16) | |
2001 | rect->height = 16; | |
2002 | if (rect->width > bounds->width) | |
2003 | rect->width = bounds->width; | |
2004 | if (rect->height > bounds->height) | |
2005 | rect->height = bounds->height; | |
2006 | if (rect->left < bounds->left) | |
2007 | rect->left = bounds->left; | |
2008 | if (rect->top < bounds->top) | |
2009 | rect->top = bounds->top; | |
2010 | if (rect->left + rect->width > bounds->left + bounds->width) | |
2011 | rect->left = bounds->left+bounds->width - rect->width; | |
2012 | if (rect->top + rect->height > bounds->top + bounds->height) | |
2013 | rect->top = bounds->top+bounds->height - rect->height; | |
2014 | ||
2015 | rect->width &= ~15L; | |
2016 | rect->height &= ~15L; | |
2017 | ||
2018 | if (SN9C102_PRESERVE_IMGSCALE) { | |
2019 | /* Calculate the actual scaling factor */ | |
2020 | u32 a, b; | |
2021 | a = rect->width * rect->height; | |
2022 | b = pix_format->width * pix_format->height; | |
2023 | scale = b ? (u8)((a / b) < 4 ? 1 : ((a / b) < 16 ? 2 : 4)) : 1; | |
2024 | } else | |
2025 | scale = 1; | |
2026 | ||
2027 | if (cam->stream == STREAM_ON) | |
2028 | if ((err = sn9c102_stream_interrupt(cam))) | |
2029 | return err; | |
1da177e4 | 2030 | |
a966f3e7 LR |
2031 | if (copy_to_user(arg, &crop, sizeof(crop))) { |
2032 | cam->stream = stream; | |
2033 | return -EFAULT; | |
1da177e4 LT |
2034 | } |
2035 | ||
a966f3e7 LR |
2036 | if (cam->module_param.force_munmap || cam->io == IO_READ) |
2037 | sn9c102_release_buffers(cam); | |
1da177e4 | 2038 | |
a966f3e7 LR |
2039 | err = sn9c102_set_crop(cam, rect); |
2040 | if (s->set_crop) | |
2041 | err += s->set_crop(cam, rect); | |
2042 | err += sn9c102_set_scale(cam, scale); | |
1da177e4 | 2043 | |
a966f3e7 LR |
2044 | if (err) { /* atomic, no rollback in ioctl() */ |
2045 | cam->state |= DEV_MISCONFIGURED; | |
2046 | DBG(1, "VIDIOC_S_CROP failed because of hardware problems. To " | |
2047 | "use the camera, close and open /dev/video%d again.", | |
2048 | cam->v4ldev->minor); | |
2049 | return -EIO; | |
2050 | } | |
1da177e4 | 2051 | |
a966f3e7 LR |
2052 | s->pix_format.width = rect->width/scale; |
2053 | s->pix_format.height = rect->height/scale; | |
2054 | memcpy(&(s->_rect), rect, sizeof(*rect)); | |
1da177e4 | 2055 | |
a966f3e7 LR |
2056 | if ((cam->module_param.force_munmap || cam->io == IO_READ) && |
2057 | nbuffers != sn9c102_request_buffers(cam, nbuffers, cam->io)) { | |
2058 | cam->state |= DEV_MISCONFIGURED; | |
2059 | DBG(1, "VIDIOC_S_CROP failed because of not enough memory. To " | |
2060 | "use the camera, close and open /dev/video%d again.", | |
2061 | cam->v4ldev->minor); | |
2062 | return -ENOMEM; | |
1da177e4 LT |
2063 | } |
2064 | ||
a966f3e7 LR |
2065 | if (cam->io == IO_READ) |
2066 | sn9c102_empty_framequeues(cam); | |
2067 | else if (cam->module_param.force_munmap) | |
2068 | sn9c102_requeue_outqueue(cam); | |
1da177e4 | 2069 | |
a966f3e7 | 2070 | cam->stream = stream; |
1da177e4 | 2071 | |
a966f3e7 LR |
2072 | return 0; |
2073 | } | |
1da177e4 | 2074 | |
1da177e4 | 2075 | |
a966f3e7 LR |
2076 | static int |
2077 | sn9c102_vidioc_enum_fmt(struct sn9c102_device* cam, void __user * arg) | |
2078 | { | |
2079 | struct v4l2_fmtdesc fmtd; | |
1da177e4 | 2080 | |
a966f3e7 LR |
2081 | if (copy_from_user(&fmtd, arg, sizeof(fmtd))) |
2082 | return -EFAULT; | |
1da177e4 | 2083 | |
a966f3e7 LR |
2084 | if (fmtd.index == 0) { |
2085 | strcpy(fmtd.description, "bayer rgb"); | |
2086 | fmtd.pixelformat = V4L2_PIX_FMT_SBGGR8; | |
2087 | } else if (fmtd.index == 1) { | |
2088 | strcpy(fmtd.description, "compressed"); | |
2089 | fmtd.pixelformat = V4L2_PIX_FMT_SN9C10X; | |
2090 | fmtd.flags = V4L2_FMT_FLAG_COMPRESSED; | |
2091 | } else | |
2092 | return -EINVAL; | |
1da177e4 | 2093 | |
a966f3e7 LR |
2094 | fmtd.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
2095 | memset(&fmtd.reserved, 0, sizeof(fmtd.reserved)); | |
1da177e4 | 2096 | |
a966f3e7 LR |
2097 | if (copy_to_user(arg, &fmtd, sizeof(fmtd))) |
2098 | return -EFAULT; | |
1da177e4 | 2099 | |
a966f3e7 LR |
2100 | return 0; |
2101 | } | |
1da177e4 | 2102 | |
1da177e4 | 2103 | |
a966f3e7 LR |
2104 | static int |
2105 | sn9c102_vidioc_g_fmt(struct sn9c102_device* cam, void __user * arg) | |
2106 | { | |
2107 | struct v4l2_format format; | |
2108 | struct v4l2_pix_format* pfmt = &(cam->sensor->pix_format); | |
1da177e4 | 2109 | |
a966f3e7 LR |
2110 | if (copy_from_user(&format, arg, sizeof(format))) |
2111 | return -EFAULT; | |
1da177e4 | 2112 | |
a966f3e7 LR |
2113 | if (format.type != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
2114 | return -EINVAL; | |
1da177e4 | 2115 | |
a966f3e7 LR |
2116 | pfmt->bytesperline = (pfmt->pixelformat==V4L2_PIX_FMT_SN9C10X) |
2117 | ? 0 : (pfmt->width * pfmt->priv) / 8; | |
2118 | pfmt->sizeimage = pfmt->height * ((pfmt->width*pfmt->priv)/8); | |
2119 | pfmt->field = V4L2_FIELD_NONE; | |
2120 | memcpy(&(format.fmt.pix), pfmt, sizeof(*pfmt)); | |
1da177e4 | 2121 | |
a966f3e7 LR |
2122 | if (copy_to_user(arg, &format, sizeof(format))) |
2123 | return -EFAULT; | |
1da177e4 | 2124 | |
a966f3e7 LR |
2125 | return 0; |
2126 | } | |
1da177e4 | 2127 | |
1da177e4 | 2128 | |
a966f3e7 LR |
2129 | static int |
2130 | sn9c102_vidioc_try_s_fmt(struct sn9c102_device* cam, unsigned int cmd, | |
2131 | void __user * arg) | |
2132 | { | |
2133 | struct sn9c102_sensor* s = cam->sensor; | |
2134 | struct v4l2_format format; | |
2135 | struct v4l2_pix_format* pix; | |
2136 | struct v4l2_pix_format* pfmt = &(s->pix_format); | |
2137 | struct v4l2_rect* bounds = &(s->cropcap.bounds); | |
2138 | struct v4l2_rect rect; | |
2139 | u8 scale; | |
2140 | const enum sn9c102_stream_state stream = cam->stream; | |
2141 | const u32 nbuffers = cam->nbuffers; | |
2142 | u32 i; | |
2143 | int err = 0; | |
1da177e4 | 2144 | |
a966f3e7 LR |
2145 | if (copy_from_user(&format, arg, sizeof(format))) |
2146 | return -EFAULT; | |
1da177e4 | 2147 | |
a966f3e7 | 2148 | pix = &(format.fmt.pix); |
1da177e4 | 2149 | |
a966f3e7 LR |
2150 | if (format.type != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
2151 | return -EINVAL; | |
1da177e4 | 2152 | |
a966f3e7 | 2153 | memcpy(&rect, &(s->_rect), sizeof(rect)); |
1da177e4 | 2154 | |
a966f3e7 LR |
2155 | { /* calculate the actual scaling factor */ |
2156 | u32 a, b; | |
2157 | a = rect.width * rect.height; | |
2158 | b = pix->width * pix->height; | |
2159 | scale = b ? (u8)((a / b) < 4 ? 1 : ((a / b) < 16 ? 2 : 4)) : 1; | |
1da177e4 LT |
2160 | } |
2161 | ||
a966f3e7 LR |
2162 | rect.width = scale * pix->width; |
2163 | rect.height = scale * pix->height; | |
1da177e4 | 2164 | |
a966f3e7 LR |
2165 | if (rect.width < 16) |
2166 | rect.width = 16; | |
2167 | if (rect.height < 16) | |
2168 | rect.height = 16; | |
2169 | if (rect.width > bounds->left + bounds->width - rect.left) | |
2170 | rect.width = bounds->left + bounds->width - rect.left; | |
2171 | if (rect.height > bounds->top + bounds->height - rect.top) | |
2172 | rect.height = bounds->top + bounds->height - rect.top; | |
1da177e4 | 2173 | |
a966f3e7 LR |
2174 | rect.width &= ~15L; |
2175 | rect.height &= ~15L; | |
1da177e4 | 2176 | |
a966f3e7 LR |
2177 | { /* adjust the scaling factor */ |
2178 | u32 a, b; | |
2179 | a = rect.width * rect.height; | |
2180 | b = pix->width * pix->height; | |
2181 | scale = b ? (u8)((a / b) < 4 ? 1 : ((a / b) < 16 ? 2 : 4)) : 1; | |
2182 | } | |
2183 | ||
2184 | pix->width = rect.width / scale; | |
2185 | pix->height = rect.height / scale; | |
2186 | ||
2187 | if (pix->pixelformat != V4L2_PIX_FMT_SN9C10X && | |
2188 | pix->pixelformat != V4L2_PIX_FMT_SBGGR8) | |
2189 | pix->pixelformat = pfmt->pixelformat; | |
2190 | pix->priv = pfmt->priv; /* bpp */ | |
2191 | pix->colorspace = pfmt->colorspace; | |
2192 | pix->bytesperline = (pix->pixelformat == V4L2_PIX_FMT_SN9C10X) | |
2193 | ? 0 : (pix->width * pix->priv) / 8; | |
2194 | pix->sizeimage = pix->height * ((pix->width * pix->priv) / 8); | |
2195 | pix->field = V4L2_FIELD_NONE; | |
2196 | ||
2197 | if (cmd == VIDIOC_TRY_FMT) { | |
2198 | if (copy_to_user(arg, &format, sizeof(format))) | |
2199 | return -EFAULT; | |
2200 | return 0; | |
2201 | } | |
1da177e4 | 2202 | |
a966f3e7 | 2203 | if (cam->module_param.force_munmap) |
1da177e4 LT |
2204 | for (i = 0; i < cam->nbuffers; i++) |
2205 | if (cam->frame[i].vma_use_count) { | |
a966f3e7 LR |
2206 | DBG(3, "VIDIOC_S_FMT failed. Unmap the " |
2207 | "buffers first."); | |
1da177e4 LT |
2208 | return -EINVAL; |
2209 | } | |
2210 | ||
a966f3e7 LR |
2211 | if (cam->stream == STREAM_ON) |
2212 | if ((err = sn9c102_stream_interrupt(cam))) | |
2213 | return err; | |
1da177e4 | 2214 | |
a966f3e7 LR |
2215 | if (copy_to_user(arg, &format, sizeof(format))) { |
2216 | cam->stream = stream; | |
2217 | return -EFAULT; | |
2218 | } | |
1da177e4 | 2219 | |
a966f3e7 | 2220 | if (cam->module_param.force_munmap || cam->io == IO_READ) |
1da177e4 | 2221 | sn9c102_release_buffers(cam); |
1da177e4 | 2222 | |
a966f3e7 LR |
2223 | err += sn9c102_set_pix_format(cam, pix); |
2224 | err += sn9c102_set_crop(cam, &rect); | |
2225 | if (s->set_pix_format) | |
2226 | err += s->set_pix_format(cam, pix); | |
2227 | if (s->set_crop) | |
2228 | err += s->set_crop(cam, &rect); | |
2229 | err += sn9c102_set_scale(cam, scale); | |
1da177e4 | 2230 | |
a966f3e7 LR |
2231 | if (err) { /* atomic, no rollback in ioctl() */ |
2232 | cam->state |= DEV_MISCONFIGURED; | |
2233 | DBG(1, "VIDIOC_S_FMT failed because of hardware problems. To " | |
2234 | "use the camera, close and open /dev/video%d again.", | |
2235 | cam->v4ldev->minor); | |
2236 | return -EIO; | |
2237 | } | |
1da177e4 | 2238 | |
a966f3e7 LR |
2239 | memcpy(pfmt, pix, sizeof(*pix)); |
2240 | memcpy(&(s->_rect), &rect, sizeof(rect)); | |
2241 | ||
2242 | if ((cam->module_param.force_munmap || cam->io == IO_READ) && | |
2243 | nbuffers != sn9c102_request_buffers(cam, nbuffers, cam->io)) { | |
2244 | cam->state |= DEV_MISCONFIGURED; | |
2245 | DBG(1, "VIDIOC_S_FMT failed because of not enough memory. To " | |
2246 | "use the camera, close and open /dev/video%d again.", | |
2247 | cam->v4ldev->minor); | |
2248 | return -ENOMEM; | |
1da177e4 LT |
2249 | } |
2250 | ||
a966f3e7 LR |
2251 | if (cam->io == IO_READ) |
2252 | sn9c102_empty_framequeues(cam); | |
2253 | else if (cam->module_param.force_munmap) | |
2254 | sn9c102_requeue_outqueue(cam); | |
1da177e4 | 2255 | |
a966f3e7 | 2256 | cam->stream = stream; |
1da177e4 | 2257 | |
a966f3e7 LR |
2258 | return 0; |
2259 | } | |
2260 | ||
2261 | ||
2262 | static int | |
2263 | sn9c102_vidioc_g_jpegcomp(struct sn9c102_device* cam, void __user * arg) | |
2264 | { | |
2265 | if (copy_to_user(arg, &cam->compression, | |
2266 | sizeof(cam->compression))) | |
2267 | return -EFAULT; | |
1da177e4 | 2268 | |
a966f3e7 LR |
2269 | return 0; |
2270 | } | |
1da177e4 | 2271 | |
1da177e4 | 2272 | |
a966f3e7 LR |
2273 | static int |
2274 | sn9c102_vidioc_s_jpegcomp(struct sn9c102_device* cam, void __user * arg) | |
2275 | { | |
2276 | struct v4l2_jpegcompression jc; | |
2277 | const enum sn9c102_stream_state stream = cam->stream; | |
2278 | int err = 0; | |
1da177e4 | 2279 | |
a966f3e7 LR |
2280 | if (copy_from_user(&jc, arg, sizeof(jc))) |
2281 | return -EFAULT; | |
1da177e4 | 2282 | |
a966f3e7 LR |
2283 | if (jc.quality != 0 && jc.quality != 1) |
2284 | return -EINVAL; | |
2285 | ||
2286 | if (cam->stream == STREAM_ON) | |
2287 | if ((err = sn9c102_stream_interrupt(cam))) | |
2288 | return err; | |
2289 | ||
2290 | err += sn9c102_set_compression(cam, &jc); | |
2291 | if (err) { /* atomic, no rollback in ioctl() */ | |
2292 | cam->state |= DEV_MISCONFIGURED; | |
2293 | DBG(1, "VIDIOC_S_JPEGCOMP failed because of hardware " | |
2294 | "problems. To use the camera, close and open " | |
2295 | "/dev/video%d again.", cam->v4ldev->minor); | |
2296 | return -EIO; | |
1da177e4 LT |
2297 | } |
2298 | ||
a966f3e7 | 2299 | cam->compression.quality = jc.quality; |
1da177e4 | 2300 | |
a966f3e7 | 2301 | cam->stream = stream; |
1da177e4 | 2302 | |
a966f3e7 LR |
2303 | return 0; |
2304 | } | |
1da177e4 | 2305 | |
a966f3e7 LR |
2306 | |
2307 | static int | |
2308 | sn9c102_vidioc_reqbufs(struct sn9c102_device* cam, void __user * arg) | |
2309 | { | |
2310 | struct v4l2_requestbuffers rb; | |
2311 | u32 i; | |
2312 | int err; | |
2313 | ||
2314 | if (copy_from_user(&rb, arg, sizeof(rb))) | |
2315 | return -EFAULT; | |
2316 | ||
2317 | if (rb.type != V4L2_BUF_TYPE_VIDEO_CAPTURE || | |
2318 | rb.memory != V4L2_MEMORY_MMAP) | |
2319 | return -EINVAL; | |
2320 | ||
2321 | if (cam->io == IO_READ) { | |
2322 | DBG(3, "Close and open the device again to choose the mmap " | |
2323 | "I/O method"); | |
2324 | return -EINVAL; | |
2325 | } | |
2326 | ||
2327 | for (i = 0; i < cam->nbuffers; i++) | |
2328 | if (cam->frame[i].vma_use_count) { | |
2329 | DBG(3, "VIDIOC_REQBUFS failed. Previous buffers are " | |
2330 | "still mapped."); | |
1da177e4 | 2331 | return -EINVAL; |
a966f3e7 | 2332 | } |
1da177e4 | 2333 | |
a966f3e7 LR |
2334 | if (cam->stream == STREAM_ON) |
2335 | if ((err = sn9c102_stream_interrupt(cam))) | |
2336 | return err; | |
1da177e4 | 2337 | |
a966f3e7 | 2338 | sn9c102_empty_framequeues(cam); |
1da177e4 | 2339 | |
a966f3e7 LR |
2340 | sn9c102_release_buffers(cam); |
2341 | if (rb.count) | |
2342 | rb.count = sn9c102_request_buffers(cam, rb.count, IO_MMAP); | |
1da177e4 | 2343 | |
a966f3e7 LR |
2344 | if (copy_to_user(arg, &rb, sizeof(rb))) { |
2345 | sn9c102_release_buffers(cam); | |
2346 | cam->io = IO_NONE; | |
2347 | return -EFAULT; | |
1da177e4 LT |
2348 | } |
2349 | ||
a966f3e7 | 2350 | cam->io = rb.count ? IO_MMAP : IO_NONE; |
1da177e4 | 2351 | |
a966f3e7 LR |
2352 | return 0; |
2353 | } | |
1da177e4 | 2354 | |
1da177e4 | 2355 | |
a966f3e7 LR |
2356 | static int |
2357 | sn9c102_vidioc_querybuf(struct sn9c102_device* cam, void __user * arg) | |
2358 | { | |
2359 | struct v4l2_buffer b; | |
1da177e4 | 2360 | |
a966f3e7 LR |
2361 | if (copy_from_user(&b, arg, sizeof(b))) |
2362 | return -EFAULT; | |
1da177e4 | 2363 | |
a966f3e7 LR |
2364 | if (b.type != V4L2_BUF_TYPE_VIDEO_CAPTURE || |
2365 | b.index >= cam->nbuffers || cam->io != IO_MMAP) | |
2366 | return -EINVAL; | |
1da177e4 | 2367 | |
a966f3e7 | 2368 | memcpy(&b, &cam->frame[b.index].buf, sizeof(b)); |
1da177e4 | 2369 | |
a966f3e7 LR |
2370 | if (cam->frame[b.index].vma_use_count) |
2371 | b.flags |= V4L2_BUF_FLAG_MAPPED; | |
1da177e4 | 2372 | |
a966f3e7 LR |
2373 | if (cam->frame[b.index].state == F_DONE) |
2374 | b.flags |= V4L2_BUF_FLAG_DONE; | |
2375 | else if (cam->frame[b.index].state != F_UNUSED) | |
2376 | b.flags |= V4L2_BUF_FLAG_QUEUED; | |
1da177e4 | 2377 | |
a966f3e7 LR |
2378 | if (copy_to_user(arg, &b, sizeof(b))) |
2379 | return -EFAULT; | |
1da177e4 | 2380 | |
a966f3e7 LR |
2381 | return 0; |
2382 | } | |
1da177e4 | 2383 | |
1da177e4 | 2384 | |
a966f3e7 LR |
2385 | static int |
2386 | sn9c102_vidioc_qbuf(struct sn9c102_device* cam, void __user * arg) | |
2387 | { | |
2388 | struct v4l2_buffer b; | |
2389 | unsigned long lock_flags; | |
1da177e4 | 2390 | |
a966f3e7 LR |
2391 | if (copy_from_user(&b, arg, sizeof(b))) |
2392 | return -EFAULT; | |
1da177e4 | 2393 | |
a966f3e7 LR |
2394 | if (b.type != V4L2_BUF_TYPE_VIDEO_CAPTURE || |
2395 | b.index >= cam->nbuffers || cam->io != IO_MMAP) | |
2396 | return -EINVAL; | |
1da177e4 | 2397 | |
a966f3e7 LR |
2398 | if (cam->frame[b.index].state != F_UNUSED) |
2399 | return -EINVAL; | |
1da177e4 | 2400 | |
a966f3e7 | 2401 | cam->frame[b.index].state = F_QUEUED; |
1da177e4 | 2402 | |
a966f3e7 LR |
2403 | spin_lock_irqsave(&cam->queue_lock, lock_flags); |
2404 | list_add_tail(&cam->frame[b.index].frame, &cam->inqueue); | |
2405 | spin_unlock_irqrestore(&cam->queue_lock, lock_flags); | |
1da177e4 | 2406 | |
a966f3e7 | 2407 | PDBGG("Frame #%lu queued", (unsigned long)b.index); |
1da177e4 | 2408 | |
a966f3e7 LR |
2409 | return 0; |
2410 | } | |
1da177e4 | 2411 | |
1da177e4 | 2412 | |
a966f3e7 LR |
2413 | static int |
2414 | sn9c102_vidioc_dqbuf(struct sn9c102_device* cam, struct file* filp, | |
2415 | void __user * arg) | |
2416 | { | |
2417 | struct v4l2_buffer b; | |
2418 | struct sn9c102_frame_t *f; | |
2419 | unsigned long lock_flags; | |
2420 | int err = 0; | |
1da177e4 | 2421 | |
a966f3e7 LR |
2422 | if (copy_from_user(&b, arg, sizeof(b))) |
2423 | return -EFAULT; | |
1da177e4 | 2424 | |
a966f3e7 LR |
2425 | if (b.type != V4L2_BUF_TYPE_VIDEO_CAPTURE || cam->io != IO_MMAP) |
2426 | return -EINVAL; | |
2427 | ||
2428 | if (list_empty(&cam->outqueue)) { | |
2429 | if (cam->stream == STREAM_OFF) | |
2430 | return -EINVAL; | |
2431 | if (filp->f_flags & O_NONBLOCK) | |
2432 | return -EAGAIN; | |
2433 | err = wait_event_interruptible | |
2434 | ( cam->wait_frame, | |
2435 | (!list_empty(&cam->outqueue)) || | |
2436 | (cam->state & DEV_DISCONNECTED) || | |
2437 | (cam->state & DEV_MISCONFIGURED) ); | |
2438 | if (err) | |
2439 | return err; | |
2440 | if (cam->state & DEV_DISCONNECTED) | |
2441 | return -ENODEV; | |
2442 | if (cam->state & DEV_MISCONFIGURED) | |
2443 | return -EIO; | |
1da177e4 LT |
2444 | } |
2445 | ||
a966f3e7 LR |
2446 | spin_lock_irqsave(&cam->queue_lock, lock_flags); |
2447 | f = list_entry(cam->outqueue.next, struct sn9c102_frame_t, frame); | |
2448 | list_del(cam->outqueue.next); | |
2449 | spin_unlock_irqrestore(&cam->queue_lock, lock_flags); | |
1da177e4 | 2450 | |
a966f3e7 | 2451 | f->state = F_UNUSED; |
1da177e4 | 2452 | |
a966f3e7 LR |
2453 | memcpy(&b, &f->buf, sizeof(b)); |
2454 | if (f->vma_use_count) | |
2455 | b.flags |= V4L2_BUF_FLAG_MAPPED; | |
2456 | ||
2457 | if (copy_to_user(arg, &b, sizeof(b))) | |
2458 | return -EFAULT; | |
2459 | ||
2460 | PDBGG("Frame #%lu dequeued", (unsigned long)f->buf.index); | |
2461 | ||
2462 | return 0; | |
2463 | } | |
2464 | ||
2465 | ||
2466 | static int | |
2467 | sn9c102_vidioc_streamon(struct sn9c102_device* cam, void __user * arg) | |
2468 | { | |
2469 | int type; | |
2470 | ||
2471 | if (copy_from_user(&type, arg, sizeof(type))) | |
2472 | return -EFAULT; | |
2473 | ||
2474 | if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE || cam->io != IO_MMAP) | |
2475 | return -EINVAL; | |
2476 | ||
2477 | if (list_empty(&cam->inqueue)) | |
2478 | return -EINVAL; | |
2479 | ||
2480 | cam->stream = STREAM_ON; | |
2481 | ||
2482 | DBG(3, "Stream on"); | |
2483 | ||
2484 | return 0; | |
2485 | } | |
2486 | ||
2487 | ||
2488 | static int | |
2489 | sn9c102_vidioc_streamoff(struct sn9c102_device* cam, void __user * arg) | |
2490 | { | |
2491 | int type, err; | |
2492 | ||
2493 | if (copy_from_user(&type, arg, sizeof(type))) | |
2494 | return -EFAULT; | |
2495 | ||
2496 | if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE || cam->io != IO_MMAP) | |
2497 | return -EINVAL; | |
2498 | ||
2499 | if (cam->stream == STREAM_ON) | |
2500 | if ((err = sn9c102_stream_interrupt(cam))) | |
2501 | return err; | |
2502 | ||
2503 | sn9c102_empty_framequeues(cam); | |
2504 | ||
2505 | DBG(3, "Stream off"); | |
2506 | ||
2507 | return 0; | |
2508 | } | |
2509 | ||
2510 | ||
2511 | static int | |
2512 | sn9c102_vidioc_g_parm(struct sn9c102_device* cam, void __user * arg) | |
2513 | { | |
2514 | struct v4l2_streamparm sp; | |
2515 | ||
2516 | if (copy_from_user(&sp, arg, sizeof(sp))) | |
2517 | return -EFAULT; | |
2518 | ||
2519 | if (sp.type != V4L2_BUF_TYPE_VIDEO_CAPTURE) | |
2520 | return -EINVAL; | |
2521 | ||
2522 | sp.parm.capture.extendedmode = 0; | |
2523 | sp.parm.capture.readbuffers = cam->nreadbuffers; | |
2524 | ||
2525 | if (copy_to_user(arg, &sp, sizeof(sp))) | |
2526 | return -EFAULT; | |
2527 | ||
2528 | return 0; | |
2529 | } | |
2530 | ||
2531 | ||
2532 | static int | |
2533 | sn9c102_vidioc_s_parm(struct sn9c102_device* cam, void __user * arg) | |
2534 | { | |
2535 | struct v4l2_streamparm sp; | |
2536 | ||
2537 | if (copy_from_user(&sp, arg, sizeof(sp))) | |
2538 | return -EFAULT; | |
2539 | ||
2540 | if (sp.type != V4L2_BUF_TYPE_VIDEO_CAPTURE) | |
2541 | return -EINVAL; | |
2542 | ||
2543 | sp.parm.capture.extendedmode = 0; | |
1da177e4 | 2544 | |
a966f3e7 | 2545 | if (sp.parm.capture.readbuffers == 0) |
1da177e4 LT |
2546 | sp.parm.capture.readbuffers = cam->nreadbuffers; |
2547 | ||
a966f3e7 LR |
2548 | if (sp.parm.capture.readbuffers > SN9C102_MAX_FRAMES) |
2549 | sp.parm.capture.readbuffers = SN9C102_MAX_FRAMES; | |
1da177e4 | 2550 | |
a966f3e7 LR |
2551 | if (copy_to_user(arg, &sp, sizeof(sp))) |
2552 | return -EFAULT; | |
1da177e4 | 2553 | |
a966f3e7 | 2554 | cam->nreadbuffers = sp.parm.capture.readbuffers; |
1da177e4 | 2555 | |
a966f3e7 LR |
2556 | return 0; |
2557 | } | |
1da177e4 | 2558 | |
1da177e4 | 2559 | |
a966f3e7 LR |
2560 | static int sn9c102_ioctl_v4l2(struct inode* inode, struct file* filp, |
2561 | unsigned int cmd, void __user * arg) | |
2562 | { | |
2563 | struct sn9c102_device* cam = video_get_drvdata(video_devdata(filp)); | |
1da177e4 | 2564 | |
a966f3e7 | 2565 | switch (cmd) { |
1da177e4 | 2566 | |
a966f3e7 LR |
2567 | case VIDIOC_QUERYCAP: |
2568 | return sn9c102_vidioc_querycap(cam, arg); | |
1da177e4 | 2569 | |
a966f3e7 LR |
2570 | case VIDIOC_ENUMINPUT: |
2571 | return sn9c102_vidioc_enuminput(cam, arg); | |
1da177e4 | 2572 | |
a966f3e7 LR |
2573 | case VIDIOC_G_INPUT: |
2574 | case VIDIOC_S_INPUT: | |
2575 | return sn9c102_vidioc_gs_input(cam, arg); | |
1da177e4 | 2576 | |
a966f3e7 LR |
2577 | case VIDIOC_QUERYCTRL: |
2578 | return sn9c102_vidioc_query_ctrl(cam, arg); | |
2579 | ||
2580 | case VIDIOC_G_CTRL: | |
2581 | return sn9c102_vidioc_g_ctrl(cam, arg); | |
2582 | ||
2583 | case VIDIOC_S_CTRL_OLD: | |
2584 | case VIDIOC_S_CTRL: | |
2585 | return sn9c102_vidioc_s_ctrl(cam, arg); | |
2586 | ||
2587 | case VIDIOC_CROPCAP_OLD: | |
2588 | case VIDIOC_CROPCAP: | |
2589 | return sn9c102_vidioc_cropcap(cam, arg); | |
2590 | ||
2591 | case VIDIOC_G_CROP: | |
2592 | return sn9c102_vidioc_g_crop(cam, arg); | |
2593 | ||
2594 | case VIDIOC_S_CROP: | |
2595 | return sn9c102_vidioc_s_crop(cam, arg); | |
2596 | ||
2597 | case VIDIOC_ENUM_FMT: | |
2598 | return sn9c102_vidioc_enum_fmt(cam, arg); | |
2599 | ||
2600 | case VIDIOC_G_FMT: | |
2601 | return sn9c102_vidioc_g_fmt(cam, arg); | |
2602 | ||
2603 | case VIDIOC_TRY_FMT: | |
2604 | case VIDIOC_S_FMT: | |
2605 | return sn9c102_vidioc_try_s_fmt(cam, cmd, arg); | |
2606 | ||
2607 | case VIDIOC_G_JPEGCOMP: | |
2608 | return sn9c102_vidioc_g_jpegcomp(cam, arg); | |
2609 | ||
2610 | case VIDIOC_S_JPEGCOMP: | |
2611 | return sn9c102_vidioc_s_jpegcomp(cam, arg); | |
2612 | ||
2613 | case VIDIOC_REQBUFS: | |
2614 | return sn9c102_vidioc_reqbufs(cam, arg); | |
2615 | ||
2616 | case VIDIOC_QUERYBUF: | |
2617 | return sn9c102_vidioc_querybuf(cam, arg); | |
2618 | ||
2619 | case VIDIOC_QBUF: | |
2620 | return sn9c102_vidioc_qbuf(cam, arg); | |
2621 | ||
2622 | case VIDIOC_DQBUF: | |
2623 | return sn9c102_vidioc_dqbuf(cam, filp, arg); | |
2624 | ||
2625 | case VIDIOC_STREAMON: | |
2626 | return sn9c102_vidioc_streamon(cam, arg); | |
2627 | ||
2628 | case VIDIOC_STREAMOFF: | |
2629 | return sn9c102_vidioc_streamoff(cam, arg); | |
2630 | ||
2631 | case VIDIOC_G_PARM: | |
2632 | return sn9c102_vidioc_g_parm(cam, arg); | |
2633 | ||
2634 | case VIDIOC_S_PARM_OLD: | |
2635 | case VIDIOC_S_PARM: | |
2636 | return sn9c102_vidioc_s_parm(cam, arg); | |
1da177e4 LT |
2637 | |
2638 | case VIDIOC_G_STD: | |
2639 | case VIDIOC_S_STD: | |
2640 | case VIDIOC_QUERYSTD: | |
2641 | case VIDIOC_ENUMSTD: | |
2642 | case VIDIOC_QUERYMENU: | |
2643 | return -EINVAL; | |
2644 | ||
2645 | default: | |
2646 | return -EINVAL; | |
2647 | ||
2648 | } | |
2649 | } | |
2650 | ||
2651 | ||
2652 | static int sn9c102_ioctl(struct inode* inode, struct file* filp, | |
2653 | unsigned int cmd, unsigned long arg) | |
2654 | { | |
2655 | struct sn9c102_device* cam = video_get_drvdata(video_devdata(filp)); | |
2656 | int err = 0; | |
2657 | ||
2658 | if (down_interruptible(&cam->fileop_sem)) | |
2659 | return -ERESTARTSYS; | |
2660 | ||
2661 | if (cam->state & DEV_DISCONNECTED) { | |
a966f3e7 | 2662 | DBG(1, "Device not present"); |
1da177e4 LT |
2663 | up(&cam->fileop_sem); |
2664 | return -ENODEV; | |
2665 | } | |
2666 | ||
2667 | if (cam->state & DEV_MISCONFIGURED) { | |
a966f3e7 LR |
2668 | DBG(1, "The camera is misconfigured. Close and open it " |
2669 | "again."); | |
1da177e4 LT |
2670 | up(&cam->fileop_sem); |
2671 | return -EIO; | |
2672 | } | |
2673 | ||
cd6fcc55 LR |
2674 | V4LDBG(3, "sn9c102", cmd); |
2675 | ||
1da177e4 LT |
2676 | err = sn9c102_ioctl_v4l2(inode, filp, cmd, (void __user *)arg); |
2677 | ||
2678 | up(&cam->fileop_sem); | |
2679 | ||
2680 | return err; | |
2681 | } | |
2682 | ||
a966f3e7 | 2683 | /*****************************************************************************/ |
1da177e4 LT |
2684 | |
2685 | static struct file_operations sn9c102_fops = { | |
a966f3e7 | 2686 | .owner = THIS_MODULE, |
1da177e4 LT |
2687 | .open = sn9c102_open, |
2688 | .release = sn9c102_release, | |
2689 | .ioctl = sn9c102_ioctl, | |
2690 | .read = sn9c102_read, | |
2691 | .poll = sn9c102_poll, | |
2692 | .mmap = sn9c102_mmap, | |
2693 | .llseek = no_llseek, | |
2694 | }; | |
2695 | ||
2696 | /*****************************************************************************/ | |
2697 | ||
2698 | /* It exists a single interface only. We do not need to validate anything. */ | |
2699 | static int | |
2700 | sn9c102_usb_probe(struct usb_interface* intf, const struct usb_device_id* id) | |
2701 | { | |
2702 | struct usb_device *udev = interface_to_usbdev(intf); | |
2703 | struct sn9c102_device* cam; | |
2704 | static unsigned int dev_nr = 0; | |
a966f3e7 | 2705 | unsigned int i; |
1da177e4 LT |
2706 | int err = 0, r; |
2707 | ||
cd6fcc55 | 2708 | if (!(cam = kzalloc(sizeof(struct sn9c102_device), GFP_KERNEL))) |
1da177e4 | 2709 | return -ENOMEM; |
1da177e4 LT |
2710 | |
2711 | cam->usbdev = udev; | |
1da177e4 | 2712 | |
cd6fcc55 | 2713 | if (!(cam->control_buffer = kzalloc(8, GFP_KERNEL))) { |
a966f3e7 | 2714 | DBG(1, "kmalloc() failed"); |
1da177e4 LT |
2715 | err = -ENOMEM; |
2716 | goto fail; | |
2717 | } | |
1da177e4 LT |
2718 | |
2719 | if (!(cam->v4ldev = video_device_alloc())) { | |
a966f3e7 | 2720 | DBG(1, "video_device_alloc() failed"); |
1da177e4 LT |
2721 | err = -ENOMEM; |
2722 | goto fail; | |
2723 | } | |
2724 | ||
2725 | init_MUTEX(&cam->dev_sem); | |
2726 | ||
2727 | r = sn9c102_read_reg(cam, 0x00); | |
2728 | if (r < 0 || r != 0x10) { | |
2729 | DBG(1, "Sorry, this is not a SN9C10x based camera " | |
a966f3e7 | 2730 | "(vid/pid 0x%04X/0x%04X)", id->idVendor, id->idProduct); |
1da177e4 LT |
2731 | err = -ENODEV; |
2732 | goto fail; | |
2733 | } | |
2734 | ||
a966f3e7 | 2735 | cam->bridge = (id->idProduct & 0xffc0) == 0x6080 ? |
1da177e4 LT |
2736 | BRIDGE_SN9C103 : BRIDGE_SN9C102; |
2737 | switch (cam->bridge) { | |
2738 | case BRIDGE_SN9C101: | |
2739 | case BRIDGE_SN9C102: | |
2740 | DBG(2, "SN9C10[12] PC Camera Controller detected " | |
a966f3e7 | 2741 | "(vid/pid 0x%04X/0x%04X)", id->idVendor, id->idProduct); |
1da177e4 LT |
2742 | break; |
2743 | case BRIDGE_SN9C103: | |
2744 | DBG(2, "SN9C103 PC Camera Controller detected " | |
a966f3e7 | 2745 | "(vid/pid 0x%04X/0x%04X)", id->idVendor, id->idProduct); |
1da177e4 LT |
2746 | break; |
2747 | } | |
2748 | ||
2749 | for (i = 0; sn9c102_sensor_table[i]; i++) { | |
2750 | err = sn9c102_sensor_table[i](cam); | |
2751 | if (!err) | |
2752 | break; | |
2753 | } | |
2754 | ||
2755 | if (!err && cam->sensor) { | |
a966f3e7 | 2756 | DBG(2, "%s image sensor detected", cam->sensor->name); |
1da177e4 | 2757 | DBG(3, "Support for %s maintained by %s", |
a966f3e7 | 2758 | cam->sensor->name, cam->sensor->maintainer); |
1da177e4 | 2759 | } else { |
a966f3e7 | 2760 | DBG(1, "No supported image sensor detected"); |
1da177e4 LT |
2761 | err = -ENODEV; |
2762 | goto fail; | |
2763 | } | |
2764 | ||
2765 | if (sn9c102_init(cam)) { | |
a966f3e7 | 2766 | DBG(1, "Initialization failed. I will retry on open()."); |
1da177e4 LT |
2767 | cam->state |= DEV_MISCONFIGURED; |
2768 | } | |
2769 | ||
2770 | strcpy(cam->v4ldev->name, "SN9C10x PC Camera"); | |
2771 | cam->v4ldev->owner = THIS_MODULE; | |
2772 | cam->v4ldev->type = VID_TYPE_CAPTURE | VID_TYPE_SCALES; | |
cd6fcc55 | 2773 | cam->v4ldev->hardware = 0; |
1da177e4 LT |
2774 | cam->v4ldev->fops = &sn9c102_fops; |
2775 | cam->v4ldev->minor = video_nr[dev_nr]; | |
2776 | cam->v4ldev->release = video_device_release; | |
2777 | video_set_drvdata(cam->v4ldev, cam); | |
2778 | ||
2779 | down(&cam->dev_sem); | |
2780 | ||
2781 | err = video_register_device(cam->v4ldev, VFL_TYPE_GRABBER, | |
2782 | video_nr[dev_nr]); | |
2783 | if (err) { | |
a966f3e7 | 2784 | DBG(1, "V4L2 device registration failed"); |
1da177e4 | 2785 | if (err == -ENFILE && video_nr[dev_nr] == -1) |
a966f3e7 | 2786 | DBG(1, "Free /dev/videoX node not found"); |
1da177e4 LT |
2787 | video_nr[dev_nr] = -1; |
2788 | dev_nr = (dev_nr < SN9C102_MAX_DEVICES-1) ? dev_nr+1 : 0; | |
2789 | up(&cam->dev_sem); | |
2790 | goto fail; | |
2791 | } | |
2792 | ||
a966f3e7 | 2793 | DBG(2, "V4L2 device registered as /dev/video%d", cam->v4ldev->minor); |
1da177e4 LT |
2794 | |
2795 | cam->module_param.force_munmap = force_munmap[dev_nr]; | |
2796 | ||
2797 | dev_nr = (dev_nr < SN9C102_MAX_DEVICES-1) ? dev_nr+1 : 0; | |
2798 | ||
cd6fcc55 | 2799 | #ifdef CONFIG_VIDEO_ADV_DEBUG |
1da177e4 | 2800 | sn9c102_create_sysfs(cam); |
a966f3e7 | 2801 | DBG(2, "Optional device control through 'sysfs' interface ready"); |
cd6fcc55 | 2802 | #endif |
1da177e4 LT |
2803 | |
2804 | usb_set_intfdata(intf, cam); | |
2805 | ||
2806 | up(&cam->dev_sem); | |
2807 | ||
2808 | return 0; | |
2809 | ||
2810 | fail: | |
2811 | if (cam) { | |
2812 | kfree(cam->control_buffer); | |
2813 | if (cam->v4ldev) | |
2814 | video_device_release(cam->v4ldev); | |
2815 | kfree(cam); | |
2816 | } | |
2817 | return err; | |
2818 | } | |
2819 | ||
2820 | ||
2821 | static void sn9c102_usb_disconnect(struct usb_interface* intf) | |
2822 | { | |
2823 | struct sn9c102_device* cam = usb_get_intfdata(intf); | |
2824 | ||
2825 | if (!cam) | |
2826 | return; | |
2827 | ||
2828 | down_write(&sn9c102_disconnect); | |
2829 | ||
2830 | down(&cam->dev_sem); | |
2831 | ||
a966f3e7 | 2832 | DBG(2, "Disconnecting %s...", cam->v4ldev->name); |
1da177e4 LT |
2833 | |
2834 | wake_up_interruptible_all(&cam->open); | |
2835 | ||
2836 | if (cam->users) { | |
2837 | DBG(2, "Device /dev/video%d is open! Deregistration and " | |
2838 | "memory deallocation are deferred on close.", | |
a966f3e7 | 2839 | cam->v4ldev->minor); |
1da177e4 LT |
2840 | cam->state |= DEV_MISCONFIGURED; |
2841 | sn9c102_stop_transfer(cam); | |
2842 | cam->state |= DEV_DISCONNECTED; | |
2843 | wake_up_interruptible(&cam->wait_frame); | |
2844 | wake_up_interruptible(&cam->wait_stream); | |
2845 | } else { | |
2846 | cam->state |= DEV_DISCONNECTED; | |
2847 | sn9c102_release_resources(cam); | |
2848 | } | |
2849 | ||
2850 | up(&cam->dev_sem); | |
2851 | ||
2852 | if (!cam->users) | |
2853 | kfree(cam); | |
2854 | ||
2855 | up_write(&sn9c102_disconnect); | |
2856 | } | |
2857 | ||
2858 | ||
2859 | static struct usb_driver sn9c102_usb_driver = { | |
1da177e4 LT |
2860 | .name = "sn9c102", |
2861 | .id_table = sn9c102_id_table, | |
2862 | .probe = sn9c102_usb_probe, | |
2863 | .disconnect = sn9c102_usb_disconnect, | |
2864 | }; | |
2865 | ||
2866 | /*****************************************************************************/ | |
2867 | ||
2868 | static int __init sn9c102_module_init(void) | |
2869 | { | |
2870 | int err = 0; | |
2871 | ||
a966f3e7 LR |
2872 | KDBG(2, SN9C102_MODULE_NAME " v" SN9C102_MODULE_VERSION); |
2873 | KDBG(3, SN9C102_MODULE_AUTHOR); | |
1da177e4 LT |
2874 | |
2875 | if ((err = usb_register(&sn9c102_usb_driver))) | |
a966f3e7 | 2876 | KDBG(1, "usb_register() failed"); |
1da177e4 LT |
2877 | |
2878 | return err; | |
2879 | } | |
2880 | ||
2881 | ||
2882 | static void __exit sn9c102_module_exit(void) | |
2883 | { | |
2884 | usb_deregister(&sn9c102_usb_driver); | |
2885 | } | |
2886 | ||
2887 | ||
2888 | module_init(sn9c102_module_init); | |
2889 | module_exit(sn9c102_module_exit); |