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Commit | Line | Data |
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1da177e4 | 1 | /*************************************************************************** |
f327ebbd | 2 | * V4L2 driver for SN9C1xx PC Camera Controllers * |
1da177e4 | 3 | * * |
f327ebbd | 4 | * Copyright (C) 2004-2007 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> | |
1da177e4 LT |
25 | #include <linux/errno.h> |
26 | #include <linux/slab.h> | |
1da177e4 LT |
27 | #include <linux/device.h> |
28 | #include <linux/fs.h> | |
29 | #include <linux/delay.h> | |
1da177e4 LT |
30 | #include <linux/compiler.h> |
31 | #include <linux/ioctl.h> | |
32 | #include <linux/poll.h> | |
33 | #include <linux/stat.h> | |
34 | #include <linux/mm.h> | |
35 | #include <linux/vmalloc.h> | |
6c13b45e | 36 | #include <linux/version.h> |
1da177e4 | 37 | #include <linux/page-flags.h> |
9a6ab769 | 38 | #include <asm/byteorder.h> |
1da177e4 LT |
39 | #include <asm/page.h> |
40 | #include <asm/uaccess.h> | |
41 | ||
42 | #include "sn9c102.h" | |
43 | ||
44 | /*****************************************************************************/ | |
45 | ||
f327ebbd | 46 | #define SN9C102_MODULE_NAME "V4L2 driver for SN9C1xx PC Camera Controllers" |
f423b9a8 LR |
47 | #define SN9C102_MODULE_ALIAS "sn9c1xx" |
48 | #define SN9C102_MODULE_AUTHOR "(C) 2004-2007 Luca Risolia" | |
cd6fcc55 LR |
49 | #define SN9C102_AUTHOR_EMAIL "<luca.risolia@studio.unibo.it>" |
50 | #define SN9C102_MODULE_LICENSE "GPL" | |
6c13b45e | 51 | #define SN9C102_MODULE_VERSION "1:1.48" |
cd6fcc55 LR |
52 | |
53 | /*****************************************************************************/ | |
54 | ||
1da177e4 LT |
55 | MODULE_DEVICE_TABLE(usb, sn9c102_id_table); |
56 | ||
57 | MODULE_AUTHOR(SN9C102_MODULE_AUTHOR " " SN9C102_AUTHOR_EMAIL); | |
58 | MODULE_DESCRIPTION(SN9C102_MODULE_NAME); | |
f423b9a8 | 59 | MODULE_ALIAS(SN9C102_MODULE_ALIAS); |
1da177e4 LT |
60 | MODULE_VERSION(SN9C102_MODULE_VERSION); |
61 | MODULE_LICENSE(SN9C102_MODULE_LICENSE); | |
62 | ||
63 | static short video_nr[] = {[0 ... SN9C102_MAX_DEVICES-1] = -1}; | |
64 | module_param_array(video_nr, short, NULL, 0444); | |
65 | MODULE_PARM_DESC(video_nr, | |
3770be34 LR |
66 | " <-1|n[,...]>" |
67 | "\nSpecify V4L2 minor mode number." | |
68 | "\n-1 = use next available (default)" | |
69 | "\n n = use minor number n (integer >= 0)" | |
d56410e0 MCC |
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 | ||
bafeafea RR |
78 | static bool force_munmap[] = {[0 ... SN9C102_MAX_DEVICES-1] = |
79 | SN9C102_FORCE_MUNMAP}; | |
1da177e4 LT |
80 | module_param_array(force_munmap, bool, NULL, 0444); |
81 | MODULE_PARM_DESC(force_munmap, | |
3770be34 LR |
82 | " <0|1[,...]>" |
83 | "\nForce the application to unmap previously" | |
d56410e0 MCC |
84 | "\nmapped buffer memory before calling any VIDIOC_S_CROP or" |
85 | "\nVIDIOC_S_FMT ioctl's. Not all the applications support" | |
86 | "\nthis feature. This parameter is specific for each" | |
87 | "\ndetected camera." | |
3770be34 LR |
88 | "\n0 = do not force memory unmapping" |
89 | "\n1 = force memory unmapping (save memory)" | |
d56410e0 MCC |
90 | "\nDefault value is "__MODULE_STRING(SN9C102_FORCE_MUNMAP)"." |
91 | "\n"); | |
1da177e4 | 92 | |
2ffab02f | 93 | static unsigned int frame_timeout[] = {[0 ... SN9C102_MAX_DEVICES-1] = |
d56410e0 | 94 | SN9C102_FRAME_TIMEOUT}; |
2ffab02f LR |
95 | module_param_array(frame_timeout, uint, NULL, 0644); |
96 | MODULE_PARM_DESC(frame_timeout, | |
3770be34 LR |
97 | " <0|n[,...]>" |
98 | "\nTimeout for a video frame in seconds before" | |
f327ebbd | 99 | "\nreturning an I/O error; 0 for infinity." |
d56410e0 MCC |
100 | "\nThis parameter is specific for each detected camera." |
101 | "\nDefault value is "__MODULE_STRING(SN9C102_FRAME_TIMEOUT)"." | |
102 | "\n"); | |
2ffab02f | 103 | |
1da177e4 LT |
104 | #ifdef SN9C102_DEBUG |
105 | static unsigned short debug = SN9C102_DEBUG_LEVEL; | |
106 | module_param(debug, ushort, 0644); | |
107 | MODULE_PARM_DESC(debug, | |
3770be34 LR |
108 | " <n>" |
109 | "\nDebugging information level, from 0 to 3:" | |
d56410e0 MCC |
110 | "\n0 = none (use carefully)" |
111 | "\n1 = critical errors" | |
112 | "\n2 = significant informations" | |
113 | "\n3 = more verbose messages" | |
f423b9a8 | 114 | "\nLevel 3 is useful for testing only." |
d56410e0 MCC |
115 | "\nDefault value is "__MODULE_STRING(SN9C102_DEBUG_LEVEL)"." |
116 | "\n"); | |
1da177e4 LT |
117 | #endif |
118 | ||
d45b9b8a HV |
119 | /* |
120 | Add the probe entries to this table. Be sure to add the entry in the right | |
121 | place, since, on failure, the next probing routine is called according to | |
122 | the order of the list below, from top to bottom. | |
123 | */ | |
124 | static int (*sn9c102_sensor_table[])(struct sn9c102_device *) = { | |
125 | &sn9c102_probe_hv7131d, /* strong detection based on SENSOR ids */ | |
126 | &sn9c102_probe_hv7131r, /* strong detection based on SENSOR ids */ | |
127 | &sn9c102_probe_mi0343, /* strong detection based on SENSOR ids */ | |
128 | &sn9c102_probe_mi0360, /* strong detection based on SENSOR ids */ | |
129 | &sn9c102_probe_mt9v111, /* strong detection based on SENSOR ids */ | |
130 | &sn9c102_probe_pas106b, /* strong detection based on SENSOR ids */ | |
131 | &sn9c102_probe_pas202bcb, /* strong detection based on SENSOR ids */ | |
132 | &sn9c102_probe_ov7630, /* strong detection based on SENSOR ids */ | |
133 | &sn9c102_probe_ov7660, /* strong detection based on SENSOR ids */ | |
134 | &sn9c102_probe_tas5110c1b, /* detection based on USB pid/vid */ | |
135 | &sn9c102_probe_tas5110d, /* detection based on USB pid/vid */ | |
136 | &sn9c102_probe_tas5130d1b, /* detection based on USB pid/vid */ | |
137 | }; | |
138 | ||
1da177e4 LT |
139 | /*****************************************************************************/ |
140 | ||
d56410e0 MCC |
141 | static u32 |
142 | sn9c102_request_buffers(struct sn9c102_device* cam, u32 count, | |
143 | enum sn9c102_io_method io) | |
1da177e4 | 144 | { |
2ffab02f LR |
145 | struct v4l2_pix_format* p = &(cam->sensor.pix_format); |
146 | struct v4l2_rect* r = &(cam->sensor.cropcap.bounds); | |
f327ebbd | 147 | size_t imagesize = cam->module_param.force_munmap || io == IO_READ ? |
f423b9a8 LR |
148 | (p->width * p->height * p->priv) / 8 : |
149 | (r->width * r->height * p->priv) / 8; | |
1da177e4 LT |
150 | void* buff = NULL; |
151 | u32 i; | |
152 | ||
153 | if (count > SN9C102_MAX_FRAMES) | |
154 | count = SN9C102_MAX_FRAMES; | |
155 | ||
f327ebbd LR |
156 | if (cam->bridge == BRIDGE_SN9C105 || cam->bridge == BRIDGE_SN9C120) |
157 | imagesize += 589 + 2; /* length of JPEG header + EOI marker */ | |
158 | ||
1da177e4 LT |
159 | cam->nbuffers = count; |
160 | while (cam->nbuffers > 0) { | |
f327ebbd LR |
161 | if ((buff = vmalloc_32_user(cam->nbuffers * |
162 | PAGE_ALIGN(imagesize)))) | |
1da177e4 LT |
163 | break; |
164 | cam->nbuffers--; | |
165 | } | |
166 | ||
167 | for (i = 0; i < cam->nbuffers; i++) { | |
168 | cam->frame[i].bufmem = buff + i*PAGE_ALIGN(imagesize); | |
169 | cam->frame[i].buf.index = i; | |
170 | cam->frame[i].buf.m.offset = i*PAGE_ALIGN(imagesize); | |
171 | cam->frame[i].buf.length = imagesize; | |
172 | cam->frame[i].buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
173 | cam->frame[i].buf.sequence = 0; | |
174 | cam->frame[i].buf.field = V4L2_FIELD_NONE; | |
175 | cam->frame[i].buf.memory = V4L2_MEMORY_MMAP; | |
176 | cam->frame[i].buf.flags = 0; | |
177 | } | |
178 | ||
179 | return cam->nbuffers; | |
180 | } | |
181 | ||
182 | ||
183 | static void sn9c102_release_buffers(struct sn9c102_device* cam) | |
184 | { | |
185 | if (cam->nbuffers) { | |
cd6fcc55 | 186 | vfree(cam->frame[0].bufmem); |
1da177e4 LT |
187 | cam->nbuffers = 0; |
188 | } | |
a966f3e7 | 189 | cam->frame_current = NULL; |
1da177e4 LT |
190 | } |
191 | ||
192 | ||
193 | static void sn9c102_empty_framequeues(struct sn9c102_device* cam) | |
194 | { | |
195 | u32 i; | |
196 | ||
197 | INIT_LIST_HEAD(&cam->inqueue); | |
198 | INIT_LIST_HEAD(&cam->outqueue); | |
199 | ||
200 | for (i = 0; i < SN9C102_MAX_FRAMES; i++) { | |
201 | cam->frame[i].state = F_UNUSED; | |
202 | cam->frame[i].buf.bytesused = 0; | |
203 | } | |
204 | } | |
205 | ||
206 | ||
a966f3e7 LR |
207 | static void sn9c102_requeue_outqueue(struct sn9c102_device* cam) |
208 | { | |
209 | struct sn9c102_frame_t *i; | |
210 | ||
211 | list_for_each_entry(i, &cam->outqueue, frame) { | |
212 | i->state = F_QUEUED; | |
213 | list_add(&i->frame, &cam->inqueue); | |
214 | } | |
215 | ||
216 | INIT_LIST_HEAD(&cam->outqueue); | |
217 | } | |
218 | ||
219 | ||
1da177e4 LT |
220 | static void sn9c102_queue_unusedframes(struct sn9c102_device* cam) |
221 | { | |
222 | unsigned long lock_flags; | |
223 | u32 i; | |
224 | ||
225 | for (i = 0; i < cam->nbuffers; i++) | |
226 | if (cam->frame[i].state == F_UNUSED) { | |
227 | cam->frame[i].state = F_QUEUED; | |
228 | spin_lock_irqsave(&cam->queue_lock, lock_flags); | |
229 | list_add_tail(&cam->frame[i].frame, &cam->inqueue); | |
230 | spin_unlock_irqrestore(&cam->queue_lock, lock_flags); | |
231 | } | |
232 | } | |
233 | ||
234 | /*****************************************************************************/ | |
480b55c2 | 235 | |
c680dd60 | 236 | /* |
480b55c2 LR |
237 | Write a sequence of count value/register pairs. Returns -1 after the first |
238 | failed write, or 0 for no errors. | |
239 | */ | |
c680dd60 TP |
240 | int sn9c102_write_regs(struct sn9c102_device* cam, const u8 valreg[][2], |
241 | int count) | |
a966f3e7 LR |
242 | { |
243 | struct usb_device* udev = cam->usbdev; | |
480b55c2 | 244 | u8* buff = cam->control_buffer; |
a966f3e7 LR |
245 | int i, res; |
246 | ||
c680dd60 TP |
247 | for (i = 0; i < count; i++) { |
248 | u8 index = valreg[i][1]; | |
249 | ||
250 | /* | |
480b55c2 LR |
251 | index is a u8, so it must be <256 and can't be out of range. |
252 | If we put in a check anyway, gcc annoys us with a warning | |
253 | hat our check is useless. People get all uppity when they | |
254 | see warnings in the kernel compile. | |
255 | */ | |
256 | ||
257 | *buff = valreg[i][0]; | |
258 | ||
259 | res = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x08, | |
260 | 0x41, index, 0, buff, 1, | |
261 | SN9C102_CTRL_TIMEOUT); | |
262 | ||
c680dd60 TP |
263 | if (res < 0) { |
264 | DBG(3, "Failed to write a register (value 0x%02X, " | |
480b55c2 | 265 | "index 0x%02X, error %d)", *buff, index, res); |
c680dd60 TP |
266 | return -1; |
267 | } | |
a966f3e7 | 268 | |
480b55c2 | 269 | cam->reg[index] = *buff; |
a966f3e7 LR |
270 | } |
271 | ||
a966f3e7 LR |
272 | return 0; |
273 | } | |
274 | ||
275 | ||
1da177e4 LT |
276 | int sn9c102_write_reg(struct sn9c102_device* cam, u8 value, u16 index) |
277 | { | |
278 | struct usb_device* udev = cam->usbdev; | |
279 | u8* buff = cam->control_buffer; | |
280 | int res; | |
281 | ||
a966f3e7 LR |
282 | if (index >= ARRAY_SIZE(cam->reg)) |
283 | return -1; | |
284 | ||
1da177e4 LT |
285 | *buff = value; |
286 | ||
287 | res = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x08, 0x41, | |
d56410e0 | 288 | index, 0, buff, 1, SN9C102_CTRL_TIMEOUT); |
1da177e4 LT |
289 | if (res < 0) { |
290 | DBG(3, "Failed to write a register (value 0x%02X, index " | |
a966f3e7 | 291 | "0x%02X, error %d)", value, index, res); |
1da177e4 LT |
292 | return -1; |
293 | } | |
294 | ||
295 | cam->reg[index] = value; | |
296 | ||
297 | return 0; | |
298 | } | |
299 | ||
300 | ||
480b55c2 LR |
301 | /* NOTE: with the SN9C10[123] reading some registers always returns 0 */ |
302 | int sn9c102_read_reg(struct sn9c102_device* cam, u16 index) | |
1da177e4 LT |
303 | { |
304 | struct usb_device* udev = cam->usbdev; | |
305 | u8* buff = cam->control_buffer; | |
306 | int res; | |
307 | ||
308 | res = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x00, 0xc1, | |
d56410e0 | 309 | index, 0, buff, 1, SN9C102_CTRL_TIMEOUT); |
1da177e4 LT |
310 | if (res < 0) |
311 | DBG(3, "Failed to read a register (index 0x%02X, error %d)", | |
a966f3e7 | 312 | index, res); |
1da177e4 LT |
313 | |
314 | return (res >= 0) ? (int)(*buff) : -1; | |
315 | } | |
316 | ||
317 | ||
318 | int sn9c102_pread_reg(struct sn9c102_device* cam, u16 index) | |
319 | { | |
a966f3e7 LR |
320 | if (index >= ARRAY_SIZE(cam->reg)) |
321 | return -1; | |
1da177e4 LT |
322 | |
323 | return cam->reg[index]; | |
324 | } | |
325 | ||
326 | ||
327 | static int | |
480b55c2 LR |
328 | sn9c102_i2c_wait(struct sn9c102_device* cam, |
329 | const struct sn9c102_sensor* sensor) | |
1da177e4 LT |
330 | { |
331 | int i, r; | |
332 | ||
333 | for (i = 1; i <= 5; i++) { | |
334 | r = sn9c102_read_reg(cam, 0x08); | |
335 | if (r < 0) | |
336 | return -EIO; | |
337 | if (r & 0x04) | |
338 | return 0; | |
339 | if (sensor->frequency & SN9C102_I2C_400KHZ) | |
340 | udelay(5*16); | |
341 | else | |
342 | udelay(16*16); | |
343 | } | |
344 | return -EBUSY; | |
345 | } | |
346 | ||
347 | ||
348 | static int | |
d56410e0 | 349 | sn9c102_i2c_detect_read_error(struct sn9c102_device* cam, |
480b55c2 | 350 | const struct sn9c102_sensor* sensor) |
1da177e4 | 351 | { |
f327ebbd LR |
352 | int r , err = 0; |
353 | ||
1da177e4 | 354 | r = sn9c102_read_reg(cam, 0x08); |
f327ebbd LR |
355 | if (r < 0) |
356 | err += r; | |
357 | ||
358 | if (cam->bridge == BRIDGE_SN9C101 || cam->bridge == BRIDGE_SN9C102) { | |
359 | if (!(r & 0x08)) | |
360 | err += -1; | |
361 | } else { | |
362 | if (r & 0x08) | |
363 | err += -1; | |
364 | } | |
365 | ||
366 | return err ? -EIO : 0; | |
1da177e4 LT |
367 | } |
368 | ||
369 | ||
370 | static int | |
d56410e0 | 371 | sn9c102_i2c_detect_write_error(struct sn9c102_device* cam, |
480b55c2 | 372 | const struct sn9c102_sensor* sensor) |
1da177e4 LT |
373 | { |
374 | int r; | |
375 | r = sn9c102_read_reg(cam, 0x08); | |
376 | return (r < 0 || (r >= 0 && (r & 0x08))) ? -EIO : 0; | |
377 | } | |
378 | ||
379 | ||
d56410e0 | 380 | int |
1da177e4 | 381 | sn9c102_i2c_try_raw_read(struct sn9c102_device* cam, |
480b55c2 LR |
382 | const struct sn9c102_sensor* sensor, u8 data0, |
383 | u8 data1, u8 n, u8 buffer[]) | |
1da177e4 LT |
384 | { |
385 | struct usb_device* udev = cam->usbdev; | |
386 | u8* data = cam->control_buffer; | |
480b55c2 | 387 | int i = 0, err = 0, res; |
1da177e4 LT |
388 | |
389 | /* Write cycle */ | |
390 | data[0] = ((sensor->interface == SN9C102_I2C_2WIRES) ? 0x80 : 0) | | |
d56410e0 | 391 | ((sensor->frequency & SN9C102_I2C_400KHZ) ? 0x01 : 0) | 0x10; |
1da177e4 LT |
392 | data[1] = data0; /* I2C slave id */ |
393 | data[2] = data1; /* address */ | |
394 | data[7] = 0x10; | |
395 | res = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x08, 0x41, | |
d56410e0 | 396 | 0x08, 0, data, 8, SN9C102_CTRL_TIMEOUT); |
1da177e4 LT |
397 | if (res < 0) |
398 | err += res; | |
399 | ||
400 | err += sn9c102_i2c_wait(cam, sensor); | |
401 | ||
402 | /* Read cycle - n bytes */ | |
403 | data[0] = ((sensor->interface == SN9C102_I2C_2WIRES) ? 0x80 : 0) | | |
d56410e0 MCC |
404 | ((sensor->frequency & SN9C102_I2C_400KHZ) ? 0x01 : 0) | |
405 | (n << 4) | 0x02; | |
1da177e4 LT |
406 | data[1] = data0; |
407 | data[7] = 0x10; | |
408 | res = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x08, 0x41, | |
d56410e0 | 409 | 0x08, 0, data, 8, SN9C102_CTRL_TIMEOUT); |
1da177e4 LT |
410 | if (res < 0) |
411 | err += res; | |
412 | ||
413 | err += sn9c102_i2c_wait(cam, sensor); | |
414 | ||
415 | /* The first read byte will be placed in data[4] */ | |
416 | res = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x00, 0xc1, | |
d56410e0 | 417 | 0x0a, 0, data, 5, SN9C102_CTRL_TIMEOUT); |
1da177e4 LT |
418 | if (res < 0) |
419 | err += res; | |
420 | ||
421 | err += sn9c102_i2c_detect_read_error(cam, sensor); | |
422 | ||
423 | PDBGG("I2C read: address 0x%02X, first read byte: 0x%02X", data1, | |
a966f3e7 | 424 | data[4]); |
1da177e4 LT |
425 | |
426 | if (err) { | |
a966f3e7 | 427 | DBG(3, "I2C read failed for %s image sensor", sensor->name); |
1da177e4 LT |
428 | return -1; |
429 | } | |
430 | ||
431 | if (buffer) | |
480b55c2 LR |
432 | for (i = 0; i < n && i < 5; i++) |
433 | buffer[n-i-1] = data[4-i]; | |
1da177e4 LT |
434 | |
435 | return (int)data[4]; | |
436 | } | |
437 | ||
438 | ||
d56410e0 | 439 | int |
1da177e4 | 440 | sn9c102_i2c_try_raw_write(struct sn9c102_device* cam, |
480b55c2 | 441 | const struct sn9c102_sensor* sensor, u8 n, u8 data0, |
d56410e0 | 442 | u8 data1, u8 data2, u8 data3, u8 data4, u8 data5) |
1da177e4 LT |
443 | { |
444 | struct usb_device* udev = cam->usbdev; | |
445 | u8* data = cam->control_buffer; | |
446 | int err = 0, res; | |
447 | ||
448 | /* Write cycle. It usually is address + value */ | |
449 | data[0] = ((sensor->interface == SN9C102_I2C_2WIRES) ? 0x80 : 0) | | |
d56410e0 MCC |
450 | ((sensor->frequency & SN9C102_I2C_400KHZ) ? 0x01 : 0) |
451 | | ((n - 1) << 4); | |
1da177e4 LT |
452 | data[1] = data0; |
453 | data[2] = data1; | |
454 | data[3] = data2; | |
455 | data[4] = data3; | |
456 | data[5] = data4; | |
457 | data[6] = data5; | |
f327ebbd | 458 | data[7] = 0x17; |
1da177e4 | 459 | res = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x08, 0x41, |
d56410e0 | 460 | 0x08, 0, data, 8, SN9C102_CTRL_TIMEOUT); |
1da177e4 LT |
461 | if (res < 0) |
462 | err += res; | |
463 | ||
464 | err += sn9c102_i2c_wait(cam, sensor); | |
465 | err += sn9c102_i2c_detect_write_error(cam, sensor); | |
466 | ||
467 | if (err) | |
a966f3e7 | 468 | DBG(3, "I2C write failed for %s image sensor", sensor->name); |
1da177e4 LT |
469 | |
470 | PDBGG("I2C raw write: %u bytes, data0 = 0x%02X, data1 = 0x%02X, " | |
471 | "data2 = 0x%02X, data3 = 0x%02X, data4 = 0x%02X, data5 = 0x%02X", | |
a966f3e7 | 472 | n, data0, data1, data2, data3, data4, data5); |
1da177e4 LT |
473 | |
474 | return err ? -1 : 0; | |
475 | } | |
476 | ||
477 | ||
478 | int | |
479 | sn9c102_i2c_try_read(struct sn9c102_device* cam, | |
480b55c2 | 480 | const struct sn9c102_sensor* sensor, u8 address) |
1da177e4 LT |
481 | { |
482 | return sn9c102_i2c_try_raw_read(cam, sensor, sensor->i2c_slave_id, | |
d56410e0 | 483 | address, 1, NULL); |
1da177e4 LT |
484 | } |
485 | ||
486 | ||
762250f8 AB |
487 | static int sn9c102_i2c_try_write(struct sn9c102_device* cam, |
488 | const struct sn9c102_sensor* sensor, | |
489 | u8 address, u8 value) | |
1da177e4 | 490 | { |
d56410e0 MCC |
491 | return sn9c102_i2c_try_raw_write(cam, sensor, 3, |
492 | sensor->i2c_slave_id, address, | |
493 | value, 0, 0, 0); | |
1da177e4 LT |
494 | } |
495 | ||
496 | ||
497 | int sn9c102_i2c_read(struct sn9c102_device* cam, u8 address) | |
498 | { | |
2ffab02f | 499 | return sn9c102_i2c_try_read(cam, &cam->sensor, address); |
1da177e4 LT |
500 | } |
501 | ||
502 | ||
503 | int sn9c102_i2c_write(struct sn9c102_device* cam, u8 address, u8 value) | |
504 | { | |
2ffab02f | 505 | return sn9c102_i2c_try_write(cam, &cam->sensor, address, value); |
1da177e4 LT |
506 | } |
507 | ||
508 | /*****************************************************************************/ | |
509 | ||
f327ebbd | 510 | static size_t sn9c102_sof_length(struct sn9c102_device* cam) |
1da177e4 | 511 | { |
a966f3e7 LR |
512 | switch (cam->bridge) { |
513 | case BRIDGE_SN9C101: | |
514 | case BRIDGE_SN9C102: | |
f327ebbd | 515 | return 12; |
a966f3e7 | 516 | case BRIDGE_SN9C103: |
f327ebbd LR |
517 | return 18; |
518 | case BRIDGE_SN9C105: | |
519 | case BRIDGE_SN9C120: | |
520 | return 62; | |
a966f3e7 | 521 | } |
1da177e4 | 522 | |
f327ebbd LR |
523 | return 0; |
524 | } | |
525 | ||
526 | ||
527 | static void* | |
528 | sn9c102_find_sof_header(struct sn9c102_device* cam, void* mem, size_t len) | |
529 | { | |
7e81d825 | 530 | static const char marker[6] = {0xff, 0xff, 0x00, 0xc4, 0xc4, 0x96}; |
f423b9a8 LR |
531 | const char *m = mem; |
532 | size_t soflen = 0, i, j; | |
f327ebbd LR |
533 | |
534 | soflen = sn9c102_sof_length(cam); | |
535 | ||
f423b9a8 LR |
536 | for (i = 0; i < len; i++) { |
537 | size_t b; | |
538 | ||
539 | /* Read the variable part of the header */ | |
540 | if (unlikely(cam->sof.bytesread >= sizeof(marker))) { | |
541 | cam->sof.header[cam->sof.bytesread] = *(m+i); | |
542 | if (++cam->sof.bytesread == soflen) { | |
543 | cam->sof.bytesread = 0; | |
544 | return mem + i; | |
545 | } | |
546 | continue; | |
547 | } | |
548 | ||
549 | /* Search for the SOF marker (fixed part) in the header */ | |
550 | for (j = 0, b=cam->sof.bytesread; j+b < sizeof(marker); j++) { | |
05b20792 | 551 | if (unlikely(i+j == len)) |
f423b9a8 LR |
552 | return NULL; |
553 | if (*(m+i+j) == marker[cam->sof.bytesread]) { | |
554 | cam->sof.header[cam->sof.bytesread] = *(m+i+j); | |
555 | if (++cam->sof.bytesread == sizeof(marker)) { | |
556 | PDBGG("Bytes to analyze: %zd. SOF " | |
557 | "starts at byte #%zd", len, i); | |
558 | i += j+1; | |
559 | break; | |
560 | } | |
561 | } else { | |
562 | cam->sof.bytesread = 0; | |
563 | break; | |
1da177e4 | 564 | } |
f423b9a8 LR |
565 | } |
566 | } | |
1da177e4 LT |
567 | |
568 | return NULL; | |
569 | } | |
570 | ||
571 | ||
572 | static void* | |
573 | sn9c102_find_eof_header(struct sn9c102_device* cam, void* mem, size_t len) | |
574 | { | |
7e81d825 | 575 | static const u8 eof_header[4][4] = { |
f327ebbd LR |
576 | {0x00, 0x00, 0x00, 0x00}, |
577 | {0x40, 0x00, 0x00, 0x00}, | |
578 | {0x80, 0x00, 0x00, 0x00}, | |
579 | {0xc0, 0x00, 0x00, 0x00}, | |
580 | }; | |
581 | size_t i, j; | |
1da177e4 | 582 | |
f423b9a8 | 583 | /* The EOF header does not exist in compressed data */ |
f327ebbd LR |
584 | if (cam->sensor.pix_format.pixelformat == V4L2_PIX_FMT_SN9C10X || |
585 | cam->sensor.pix_format.pixelformat == V4L2_PIX_FMT_JPEG) | |
f423b9a8 | 586 | return NULL; |
1da177e4 | 587 | |
f423b9a8 LR |
588 | /* |
589 | The EOF header might cross the packet boundary, but this is not a | |
590 | problem, since the end of a frame is determined by checking its size | |
591 | in the first place. | |
592 | */ | |
f327ebbd LR |
593 | for (i = 0; (len >= 4) && (i <= len - 4); i++) |
594 | for (j = 0; j < ARRAY_SIZE(eof_header); j++) | |
595 | if (!memcmp(mem + i, eof_header[j], 4)) | |
1da177e4 LT |
596 | return mem + i; |
597 | ||
598 | return NULL; | |
599 | } | |
600 | ||
601 | ||
f327ebbd LR |
602 | static void |
603 | sn9c102_write_jpegheader(struct sn9c102_device* cam, struct sn9c102_frame_t* f) | |
604 | { | |
7e81d825 | 605 | static const u8 jpeg_header[589] = { |
f327ebbd LR |
606 | 0xff, 0xd8, 0xff, 0xdb, 0x00, 0x84, 0x00, 0x06, 0x04, 0x05, |
607 | 0x06, 0x05, 0x04, 0x06, 0x06, 0x05, 0x06, 0x07, 0x07, 0x06, | |
608 | 0x08, 0x0a, 0x10, 0x0a, 0x0a, 0x09, 0x09, 0x0a, 0x14, 0x0e, | |
609 | 0x0f, 0x0c, 0x10, 0x17, 0x14, 0x18, 0x18, 0x17, 0x14, 0x16, | |
610 | 0x16, 0x1a, 0x1d, 0x25, 0x1f, 0x1a, 0x1b, 0x23, 0x1c, 0x16, | |
611 | 0x16, 0x20, 0x2c, 0x20, 0x23, 0x26, 0x27, 0x29, 0x2a, 0x29, | |
612 | 0x19, 0x1f, 0x2d, 0x30, 0x2d, 0x28, 0x30, 0x25, 0x28, 0x29, | |
613 | 0x28, 0x01, 0x07, 0x07, 0x07, 0x0a, 0x08, 0x0a, 0x13, 0x0a, | |
614 | 0x0a, 0x13, 0x28, 0x1a, 0x16, 0x1a, 0x28, 0x28, 0x28, 0x28, | |
615 | 0x28, 0x28, 0x28, 0x28, 0x28, 0x28, 0x28, 0x28, 0x28, 0x28, | |
616 | 0x28, 0x28, 0x28, 0x28, 0x28, 0x28, 0x28, 0x28, 0x28, 0x28, | |
617 | 0x28, 0x28, 0x28, 0x28, 0x28, 0x28, 0x28, 0x28, 0x28, 0x28, | |
618 | 0x28, 0x28, 0x28, 0x28, 0x28, 0x28, 0x28, 0x28, 0x28, 0x28, | |
619 | 0x28, 0x28, 0x28, 0x28, 0x28, 0x28, 0xff, 0xc4, 0x01, 0xa2, | |
620 | 0x00, 0x00, 0x01, 0x05, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, | |
621 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x02, | |
622 | 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x01, | |
623 | 0x00, 0x03, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, | |
624 | 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x02, 0x03, | |
625 | 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x10, 0x00, | |
626 | 0x02, 0x01, 0x03, 0x03, 0x02, 0x04, 0x03, 0x05, 0x05, 0x04, | |
627 | 0x04, 0x00, 0x00, 0x01, 0x7d, 0x01, 0x02, 0x03, 0x00, 0x04, | |
628 | 0x11, 0x05, 0x12, 0x21, 0x31, 0x41, 0x06, 0x13, 0x51, 0x61, | |
629 | 0x07, 0x22, 0x71, 0x14, 0x32, 0x81, 0x91, 0xa1, 0x08, 0x23, | |
630 | 0x42, 0xb1, 0xc1, 0x15, 0x52, 0xd1, 0xf0, 0x24, 0x33, 0x62, | |
631 | 0x72, 0x82, 0x09, 0x0a, 0x16, 0x17, 0x18, 0x19, 0x1a, 0x25, | |
632 | 0x26, 0x27, 0x28, 0x29, 0x2a, 0x34, 0x35, 0x36, 0x37, 0x38, | |
633 | 0x39, 0x3a, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49, 0x4a, | |
634 | 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59, 0x5a, 0x63, 0x64, | |
635 | 0x65, 0x66, 0x67, 0x68, 0x69, 0x6a, 0x73, 0x74, 0x75, 0x76, | |
636 | 0x77, 0x78, 0x79, 0x7a, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, | |
637 | 0x89, 0x8a, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98, 0x99, | |
638 | 0x9a, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7, 0xa8, 0xa9, 0xaa, | |
639 | 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7, 0xb8, 0xb9, 0xba, 0xc2, | |
640 | 0xc3, 0xc4, 0xc5, 0xc6, 0xc7, 0xc8, 0xc9, 0xca, 0xd2, 0xd3, | |
641 | 0xd4, 0xd5, 0xd6, 0xd7, 0xd8, 0xd9, 0xda, 0xe1, 0xe2, 0xe3, | |
642 | 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9, 0xea, 0xf1, 0xf2, 0xf3, | |
643 | 0xf4, 0xf5, 0xf6, 0xf7, 0xf8, 0xf9, 0xfa, 0x11, 0x00, 0x02, | |
644 | 0x01, 0x02, 0x04, 0x04, 0x03, 0x04, 0x07, 0x05, 0x04, 0x04, | |
645 | 0x00, 0x01, 0x02, 0x77, 0x00, 0x01, 0x02, 0x03, 0x11, 0x04, | |
646 | 0x05, 0x21, 0x31, 0x06, 0x12, 0x41, 0x51, 0x07, 0x61, 0x71, | |
647 | 0x13, 0x22, 0x32, 0x81, 0x08, 0x14, 0x42, 0x91, 0xa1, 0xb1, | |
648 | 0xc1, 0x09, 0x23, 0x33, 0x52, 0xf0, 0x15, 0x62, 0x72, 0xd1, | |
649 | 0x0a, 0x16, 0x24, 0x34, 0xe1, 0x25, 0xf1, 0x17, 0x18, 0x19, | |
650 | 0x1a, 0x26, 0x27, 0x28, 0x29, 0x2a, 0x35, 0x36, 0x37, 0x38, | |
651 | 0x39, 0x3a, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49, 0x4a, | |
652 | 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59, 0x5a, 0x63, 0x64, | |
653 | 0x65, 0x66, 0x67, 0x68, 0x69, 0x6a, 0x73, 0x74, 0x75, 0x76, | |
654 | 0x77, 0x78, 0x79, 0x7a, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, | |
655 | 0x88, 0x89, 0x8a, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98, | |
656 | 0x99, 0x9a, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7, 0xa8, 0xa9, | |
657 | 0xaa, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7, 0xb8, 0xb9, 0xba, | |
658 | 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7, 0xc8, 0xc9, 0xca, 0xd2, | |
659 | 0xd3, 0xd4, 0xd5, 0xd6, 0xd7, 0xd8, 0xd9, 0xda, 0xe2, 0xe3, | |
660 | 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9, 0xea, 0xf2, 0xf3, 0xf4, | |
661 | 0xf5, 0xf6, 0xf7, 0xf8, 0xf9, 0xfa, 0xff, 0xc0, 0x00, 0x11, | |
662 | 0x08, 0x01, 0xe0, 0x02, 0x80, 0x03, 0x01, 0x21, 0x00, 0x02, | |
663 | 0x11, 0x01, 0x03, 0x11, 0x01, 0xff, 0xda, 0x00, 0x0c, 0x03, | |
664 | 0x01, 0x00, 0x02, 0x11, 0x03, 0x11, 0x00, 0x3f, 0x00 | |
665 | }; | |
666 | u8 *pos = f->bufmem; | |
667 | ||
668 | memcpy(pos, jpeg_header, sizeof(jpeg_header)); | |
669 | *(pos + 6) = 0x00; | |
670 | *(pos + 7 + 64) = 0x01; | |
671 | if (cam->compression.quality == 0) { | |
672 | memcpy(pos + 7, SN9C102_Y_QTABLE0, 64); | |
673 | memcpy(pos + 8 + 64, SN9C102_UV_QTABLE0, 64); | |
674 | } else if (cam->compression.quality == 1) { | |
675 | memcpy(pos + 7, SN9C102_Y_QTABLE1, 64); | |
676 | memcpy(pos + 8 + 64, SN9C102_UV_QTABLE1, 64); | |
677 | } | |
678 | *(pos + 564) = cam->sensor.pix_format.width & 0xFF; | |
679 | *(pos + 563) = (cam->sensor.pix_format.width >> 8) & 0xFF; | |
680 | *(pos + 562) = cam->sensor.pix_format.height & 0xFF; | |
681 | *(pos + 561) = (cam->sensor.pix_format.height >> 8) & 0xFF; | |
682 | *(pos + 567) = 0x21; | |
683 | ||
684 | f->buf.bytesused += sizeof(jpeg_header); | |
685 | } | |
686 | ||
687 | ||
7d12e780 | 688 | static void sn9c102_urb_complete(struct urb *urb) |
1da177e4 LT |
689 | { |
690 | struct sn9c102_device* cam = urb->context; | |
691 | struct sn9c102_frame_t** f; | |
a966f3e7 | 692 | size_t imagesize, soflen; |
1da177e4 LT |
693 | u8 i; |
694 | int err = 0; | |
695 | ||
696 | if (urb->status == -ENOENT) | |
697 | return; | |
698 | ||
699 | f = &cam->frame_current; | |
700 | ||
701 | if (cam->stream == STREAM_INTERRUPT) { | |
702 | cam->stream = STREAM_OFF; | |
703 | if ((*f)) | |
704 | (*f)->state = F_QUEUED; | |
f423b9a8 | 705 | cam->sof.bytesread = 0; |
f327ebbd | 706 | DBG(3, "Stream interrupted by application"); |
2ffab02f | 707 | wake_up(&cam->wait_stream); |
1da177e4 LT |
708 | } |
709 | ||
710 | if (cam->state & DEV_DISCONNECTED) | |
711 | return; | |
712 | ||
713 | if (cam->state & DEV_MISCONFIGURED) { | |
714 | wake_up_interruptible(&cam->wait_frame); | |
715 | return; | |
716 | } | |
717 | ||
718 | if (cam->stream == STREAM_OFF || list_empty(&cam->inqueue)) | |
719 | goto resubmit_urb; | |
720 | ||
721 | if (!(*f)) | |
722 | (*f) = list_entry(cam->inqueue.next, struct sn9c102_frame_t, | |
d56410e0 | 723 | frame); |
1da177e4 | 724 | |
2ffab02f | 725 | imagesize = (cam->sensor.pix_format.width * |
d56410e0 MCC |
726 | cam->sensor.pix_format.height * |
727 | cam->sensor.pix_format.priv) / 8; | |
f327ebbd LR |
728 | if (cam->sensor.pix_format.pixelformat == V4L2_PIX_FMT_JPEG) |
729 | imagesize += 589; /* length of jpeg header */ | |
730 | soflen = sn9c102_sof_length(cam); | |
a966f3e7 | 731 | |
1da177e4 LT |
732 | for (i = 0; i < urb->number_of_packets; i++) { |
733 | unsigned int img, len, status; | |
734 | void *pos, *sof, *eof; | |
735 | ||
736 | len = urb->iso_frame_desc[i].actual_length; | |
737 | status = urb->iso_frame_desc[i].status; | |
738 | pos = urb->iso_frame_desc[i].offset + urb->transfer_buffer; | |
739 | ||
740 | if (status) { | |
a966f3e7 | 741 | DBG(3, "Error in isochronous frame"); |
1da177e4 | 742 | (*f)->state = F_ERROR; |
f423b9a8 | 743 | cam->sof.bytesread = 0; |
1da177e4 LT |
744 | continue; |
745 | } | |
746 | ||
a966f3e7 | 747 | PDBGG("Isochrnous frame: length %u, #%u i", len, i); |
1da177e4 LT |
748 | |
749 | redo: | |
750 | sof = sn9c102_find_sof_header(cam, pos, len); | |
2ffab02f | 751 | if (likely(!sof)) { |
1da177e4 LT |
752 | eof = sn9c102_find_eof_header(cam, pos, len); |
753 | if ((*f)->state == F_GRABBING) { | |
754 | end_of_frame: | |
755 | img = len; | |
756 | ||
757 | if (eof) | |
758 | img = (eof > pos) ? eof - pos - 1 : 0; | |
759 | ||
f423b9a8 | 760 | if ((*f)->buf.bytesused + img > imagesize) { |
2ffab02f LR |
761 | u32 b; |
762 | b = (*f)->buf.bytesused + img - | |
763 | imagesize; | |
1da177e4 | 764 | img = imagesize - (*f)->buf.bytesused; |
f423b9a8 LR |
765 | PDBGG("Expected EOF not found: video " |
766 | "frame cut"); | |
1da177e4 LT |
767 | if (eof) |
768 | DBG(3, "Exceeded limit: +%u " | |
a966f3e7 | 769 | "bytes", (unsigned)(b)); |
1da177e4 LT |
770 | } |
771 | ||
772 | memcpy((*f)->bufmem + (*f)->buf.bytesused, pos, | |
773 | img); | |
774 | ||
775 | if ((*f)->buf.bytesused == 0) | |
776 | do_gettimeofday(&(*f)->buf.timestamp); | |
777 | ||
778 | (*f)->buf.bytesused += img; | |
779 | ||
780 | if ((*f)->buf.bytesused == imagesize || | |
f327ebbd LR |
781 | ((cam->sensor.pix_format.pixelformat == |
782 | V4L2_PIX_FMT_SN9C10X || | |
783 | cam->sensor.pix_format.pixelformat == | |
784 | V4L2_PIX_FMT_JPEG) && eof)) { | |
2ffab02f | 785 | u32 b; |
f327ebbd | 786 | |
2ffab02f | 787 | b = (*f)->buf.bytesused; |
1da177e4 LT |
788 | (*f)->state = F_DONE; |
789 | (*f)->buf.sequence= ++cam->frame_count; | |
f327ebbd | 790 | |
a966f3e7 | 791 | spin_lock(&cam->queue_lock); |
1da177e4 | 792 | list_move_tail(&(*f)->frame, |
d56410e0 | 793 | &cam->outqueue); |
1da177e4 LT |
794 | if (!list_empty(&cam->inqueue)) |
795 | (*f) = list_entry( | |
d56410e0 MCC |
796 | cam->inqueue.next, |
797 | struct sn9c102_frame_t, | |
798 | frame ); | |
1da177e4 LT |
799 | else |
800 | (*f) = NULL; | |
a966f3e7 | 801 | spin_unlock(&cam->queue_lock); |
f327ebbd | 802 | |
1da177e4 | 803 | memcpy(cam->sysfs.frame_header, |
f423b9a8 | 804 | cam->sof.header, soflen); |
f327ebbd | 805 | |
a966f3e7 LR |
806 | DBG(3, "Video frame captured: %lu " |
807 | "bytes", (unsigned long)(b)); | |
1da177e4 LT |
808 | |
809 | if (!(*f)) | |
810 | goto resubmit_urb; | |
811 | ||
812 | } else if (eof) { | |
813 | (*f)->state = F_ERROR; | |
814 | DBG(3, "Not expected EOF after %lu " | |
d56410e0 | 815 | "bytes of image data", |
a966f3e7 LR |
816 | (unsigned long) |
817 | ((*f)->buf.bytesused)); | |
1da177e4 LT |
818 | } |
819 | ||
820 | if (sof) /* (1) */ | |
821 | goto start_of_frame; | |
822 | ||
823 | } else if (eof) { | |
a966f3e7 | 824 | DBG(3, "EOF without SOF"); |
1da177e4 LT |
825 | continue; |
826 | ||
827 | } else { | |
a966f3e7 | 828 | PDBGG("Ignoring pointless isochronous frame"); |
1da177e4 LT |
829 | continue; |
830 | } | |
831 | ||
832 | } else if ((*f)->state == F_QUEUED || (*f)->state == F_ERROR) { | |
833 | start_of_frame: | |
834 | (*f)->state = F_GRABBING; | |
835 | (*f)->buf.bytesused = 0; | |
836 | len -= (sof - pos); | |
837 | pos = sof; | |
f327ebbd LR |
838 | if (cam->sensor.pix_format.pixelformat == |
839 | V4L2_PIX_FMT_JPEG) | |
840 | sn9c102_write_jpegheader(cam, (*f)); | |
a966f3e7 | 841 | DBG(3, "SOF detected: new video frame"); |
1da177e4 LT |
842 | if (len) |
843 | goto redo; | |
844 | ||
845 | } else if ((*f)->state == F_GRABBING) { | |
846 | eof = sn9c102_find_eof_header(cam, pos, len); | |
847 | if (eof && eof < sof) | |
848 | goto end_of_frame; /* (1) */ | |
849 | else { | |
2ffab02f | 850 | if (cam->sensor.pix_format.pixelformat == |
f327ebbd LR |
851 | V4L2_PIX_FMT_SN9C10X || |
852 | cam->sensor.pix_format.pixelformat == | |
853 | V4L2_PIX_FMT_JPEG) { | |
f423b9a8 LR |
854 | if (sof - pos >= soflen) { |
855 | eof = sof - soflen; | |
856 | } else { /* remove header */ | |
857 | eof = pos; | |
858 | (*f)->buf.bytesused -= | |
859 | (soflen - (sof - pos)); | |
860 | } | |
1da177e4 LT |
861 | goto end_of_frame; |
862 | } else { | |
863 | DBG(3, "SOF before expected EOF after " | |
d56410e0 | 864 | "%lu bytes of image data", |
a966f3e7 LR |
865 | (unsigned long) |
866 | ((*f)->buf.bytesused)); | |
1da177e4 LT |
867 | goto start_of_frame; |
868 | } | |
869 | } | |
870 | } | |
871 | } | |
872 | ||
873 | resubmit_urb: | |
874 | urb->dev = cam->usbdev; | |
875 | err = usb_submit_urb(urb, GFP_ATOMIC); | |
876 | if (err < 0 && err != -EPERM) { | |
877 | cam->state |= DEV_MISCONFIGURED; | |
a966f3e7 | 878 | DBG(1, "usb_submit_urb() failed"); |
1da177e4 LT |
879 | } |
880 | ||
881 | wake_up_interruptible(&cam->wait_frame); | |
882 | } | |
883 | ||
884 | ||
885 | static int sn9c102_start_transfer(struct sn9c102_device* cam) | |
886 | { | |
887 | struct usb_device *udev = cam->usbdev; | |
888 | struct urb* urb; | |
f327ebbd LR |
889 | struct usb_host_interface* altsetting = usb_altnum_to_altsetting( |
890 | usb_ifnum_to_if(udev, 0), | |
891 | SN9C102_ALTERNATE_SETTING); | |
892 | const unsigned int psz = le16_to_cpu(altsetting-> | |
893 | endpoint[0].desc.wMaxPacketSize); | |
1da177e4 LT |
894 | s8 i, j; |
895 | int err = 0; | |
896 | ||
897 | for (i = 0; i < SN9C102_URBS; i++) { | |
cd6fcc55 | 898 | cam->transfer_buffer[i] = kzalloc(SN9C102_ISO_PACKETS * psz, |
d56410e0 | 899 | GFP_KERNEL); |
1da177e4 LT |
900 | if (!cam->transfer_buffer[i]) { |
901 | err = -ENOMEM; | |
a966f3e7 | 902 | DBG(1, "Not enough memory"); |
1da177e4 LT |
903 | goto free_buffers; |
904 | } | |
905 | } | |
906 | ||
907 | for (i = 0; i < SN9C102_URBS; i++) { | |
908 | urb = usb_alloc_urb(SN9C102_ISO_PACKETS, GFP_KERNEL); | |
909 | cam->urb[i] = urb; | |
910 | if (!urb) { | |
911 | err = -ENOMEM; | |
a966f3e7 | 912 | DBG(1, "usb_alloc_urb() failed"); |
1da177e4 LT |
913 | goto free_urbs; |
914 | } | |
915 | urb->dev = udev; | |
916 | urb->context = cam; | |
917 | urb->pipe = usb_rcvisocpipe(udev, 1); | |
918 | urb->transfer_flags = URB_ISO_ASAP; | |
919 | urb->number_of_packets = SN9C102_ISO_PACKETS; | |
920 | urb->complete = sn9c102_urb_complete; | |
921 | urb->transfer_buffer = cam->transfer_buffer[i]; | |
922 | urb->transfer_buffer_length = psz * SN9C102_ISO_PACKETS; | |
923 | urb->interval = 1; | |
924 | for (j = 0; j < SN9C102_ISO_PACKETS; j++) { | |
925 | urb->iso_frame_desc[j].offset = psz * j; | |
926 | urb->iso_frame_desc[j].length = psz; | |
927 | } | |
928 | } | |
929 | ||
930 | /* Enable video */ | |
931 | if (!(cam->reg[0x01] & 0x04)) { | |
932 | err = sn9c102_write_reg(cam, cam->reg[0x01] | 0x04, 0x01); | |
933 | if (err) { | |
934 | err = -EIO; | |
a966f3e7 | 935 | DBG(1, "I/O hardware error"); |
1da177e4 LT |
936 | goto free_urbs; |
937 | } | |
938 | } | |
939 | ||
940 | err = usb_set_interface(udev, 0, SN9C102_ALTERNATE_SETTING); | |
941 | if (err) { | |
a966f3e7 | 942 | DBG(1, "usb_set_interface() failed"); |
1da177e4 LT |
943 | goto free_urbs; |
944 | } | |
945 | ||
946 | cam->frame_current = NULL; | |
f423b9a8 | 947 | cam->sof.bytesread = 0; |
1da177e4 LT |
948 | |
949 | for (i = 0; i < SN9C102_URBS; i++) { | |
950 | err = usb_submit_urb(cam->urb[i], GFP_KERNEL); | |
951 | if (err) { | |
952 | for (j = i-1; j >= 0; j--) | |
953 | usb_kill_urb(cam->urb[j]); | |
a966f3e7 | 954 | DBG(1, "usb_submit_urb() failed, error %d", err); |
1da177e4 LT |
955 | goto free_urbs; |
956 | } | |
957 | } | |
958 | ||
959 | return 0; | |
960 | ||
961 | free_urbs: | |
f327ebbd | 962 | for (i = 0; (i < SN9C102_URBS) && cam->urb[i]; i++) |
1da177e4 LT |
963 | usb_free_urb(cam->urb[i]); |
964 | ||
965 | free_buffers: | |
966 | for (i = 0; (i < SN9C102_URBS) && cam->transfer_buffer[i]; i++) | |
967 | kfree(cam->transfer_buffer[i]); | |
968 | ||
969 | return err; | |
970 | } | |
971 | ||
972 | ||
973 | static int sn9c102_stop_transfer(struct sn9c102_device* cam) | |
974 | { | |
975 | struct usb_device *udev = cam->usbdev; | |
976 | s8 i; | |
977 | int err = 0; | |
978 | ||
979 | if (cam->state & DEV_DISCONNECTED) | |
980 | return 0; | |
981 | ||
982 | for (i = SN9C102_URBS-1; i >= 0; i--) { | |
983 | usb_kill_urb(cam->urb[i]); | |
984 | usb_free_urb(cam->urb[i]); | |
985 | kfree(cam->transfer_buffer[i]); | |
986 | } | |
987 | ||
988 | err = usb_set_interface(udev, 0, 0); /* 0 Mb/s */ | |
989 | if (err) | |
a966f3e7 | 990 | DBG(3, "usb_set_interface() failed"); |
1da177e4 LT |
991 | |
992 | return err; | |
993 | } | |
994 | ||
995 | ||
7107627b | 996 | static int sn9c102_stream_interrupt(struct sn9c102_device* cam) |
1da177e4 | 997 | { |
1da177e4 | 998 | cam->stream = STREAM_INTERRUPT; |
e92ba283 | 999 | wait_event_timeout(cam->wait_stream, |
d56410e0 MCC |
1000 | (cam->stream == STREAM_OFF) || |
1001 | (cam->state & DEV_DISCONNECTED), | |
1002 | SN9C102_URB_TIMEOUT); | |
1da177e4 LT |
1003 | if (cam->state & DEV_DISCONNECTED) |
1004 | return -ENODEV; | |
2ffab02f | 1005 | else if (cam->stream != STREAM_OFF) { |
1da177e4 | 1006 | cam->state |= DEV_MISCONFIGURED; |
2ffab02f | 1007 | DBG(1, "URB timeout reached. The camera is misconfigured. " |
38c7c036 LP |
1008 | "To use it, close and open %s again.", |
1009 | video_device_node_name(cam->v4ldev)); | |
2ffab02f | 1010 | return -EIO; |
1da177e4 LT |
1011 | } |
1012 | ||
1013 | return 0; | |
1014 | } | |
1015 | ||
1016 | /*****************************************************************************/ | |
1017 | ||
cd6fcc55 | 1018 | #ifdef CONFIG_VIDEO_ADV_DEBUG |
f327ebbd | 1019 | static u16 sn9c102_strtou16(const char* buff, size_t len, ssize_t* count) |
1da177e4 | 1020 | { |
f327ebbd | 1021 | char str[7]; |
1da177e4 LT |
1022 | char* endp; |
1023 | unsigned long val; | |
1024 | ||
f327ebbd | 1025 | if (len < 6) { |
1da177e4 | 1026 | strncpy(str, buff, len); |
f423b9a8 | 1027 | str[len] = '\0'; |
1da177e4 | 1028 | } else { |
f423b9a8 | 1029 | strncpy(str, buff, 6); |
f327ebbd | 1030 | str[6] = '\0'; |
1da177e4 LT |
1031 | } |
1032 | ||
1033 | val = simple_strtoul(str, &endp, 0); | |
1034 | ||
1035 | *count = 0; | |
f327ebbd | 1036 | if (val <= 0xffff) |
1da177e4 LT |
1037 | *count = (ssize_t)(endp - str); |
1038 | if ((*count) && (len == *count+1) && (buff[*count] == '\n')) | |
1039 | *count += 1; | |
1040 | ||
f327ebbd | 1041 | return (u16)val; |
1da177e4 LT |
1042 | } |
1043 | ||
1044 | /* | |
1045 | NOTE 1: being inside one of the following methods implies that the v4l | |
d56410e0 | 1046 | device exists for sure (see kobjects and reference counters) |
1da177e4 LT |
1047 | NOTE 2: buffers are PAGE_SIZE long |
1048 | */ | |
1049 | ||
54bd5b66 KS |
1050 | static ssize_t sn9c102_show_reg(struct device* cd, |
1051 | struct device_attribute *attr, char* buf) | |
1da177e4 LT |
1052 | { |
1053 | struct sn9c102_device* cam; | |
1054 | ssize_t count; | |
1055 | ||
4186ecf8 | 1056 | if (mutex_lock_interruptible(&sn9c102_sysfs_lock)) |
1da177e4 LT |
1057 | return -ERESTARTSYS; |
1058 | ||
22a04f10 | 1059 | cam = video_get_drvdata(container_of(cd, struct video_device, dev)); |
1da177e4 | 1060 | if (!cam) { |
4186ecf8 | 1061 | mutex_unlock(&sn9c102_sysfs_lock); |
1da177e4 LT |
1062 | return -ENODEV; |
1063 | } | |
1064 | ||
1065 | count = sprintf(buf, "%u\n", cam->sysfs.reg); | |
1066 | ||
4186ecf8 | 1067 | mutex_unlock(&sn9c102_sysfs_lock); |
1da177e4 LT |
1068 | |
1069 | return count; | |
d56410e0 | 1070 | } |
1da177e4 LT |
1071 | |
1072 | ||
d56410e0 | 1073 | static ssize_t |
54bd5b66 KS |
1074 | sn9c102_store_reg(struct device* cd, struct device_attribute *attr, |
1075 | const char* buf, size_t len) | |
1da177e4 LT |
1076 | { |
1077 | struct sn9c102_device* cam; | |
f327ebbd | 1078 | u16 index; |
1da177e4 LT |
1079 | ssize_t count; |
1080 | ||
4186ecf8 | 1081 | if (mutex_lock_interruptible(&sn9c102_sysfs_lock)) |
1da177e4 LT |
1082 | return -ERESTARTSYS; |
1083 | ||
22a04f10 | 1084 | cam = video_get_drvdata(container_of(cd, struct video_device, dev)); |
1da177e4 | 1085 | if (!cam) { |
4186ecf8 | 1086 | mutex_unlock(&sn9c102_sysfs_lock); |
1da177e4 LT |
1087 | return -ENODEV; |
1088 | } | |
1089 | ||
f327ebbd LR |
1090 | index = sn9c102_strtou16(buf, len, &count); |
1091 | if (index >= ARRAY_SIZE(cam->reg) || !count) { | |
4186ecf8 | 1092 | mutex_unlock(&sn9c102_sysfs_lock); |
1da177e4 LT |
1093 | return -EINVAL; |
1094 | } | |
1095 | ||
1096 | cam->sysfs.reg = index; | |
1097 | ||
f327ebbd | 1098 | DBG(2, "Moved SN9C1XX register index to 0x%02X", cam->sysfs.reg); |
a966f3e7 | 1099 | DBG(3, "Written bytes: %zd", count); |
1da177e4 | 1100 | |
4186ecf8 | 1101 | mutex_unlock(&sn9c102_sysfs_lock); |
1da177e4 LT |
1102 | |
1103 | return count; | |
1104 | } | |
1105 | ||
1106 | ||
54bd5b66 KS |
1107 | static ssize_t sn9c102_show_val(struct device* cd, |
1108 | struct device_attribute *attr, char* buf) | |
1da177e4 LT |
1109 | { |
1110 | struct sn9c102_device* cam; | |
1111 | ssize_t count; | |
1112 | int val; | |
1113 | ||
4186ecf8 | 1114 | if (mutex_lock_interruptible(&sn9c102_sysfs_lock)) |
1da177e4 LT |
1115 | return -ERESTARTSYS; |
1116 | ||
22a04f10 | 1117 | cam = video_get_drvdata(container_of(cd, struct video_device, dev)); |
1da177e4 | 1118 | if (!cam) { |
4186ecf8 | 1119 | mutex_unlock(&sn9c102_sysfs_lock); |
1da177e4 LT |
1120 | return -ENODEV; |
1121 | } | |
1122 | ||
1123 | if ((val = sn9c102_read_reg(cam, cam->sysfs.reg)) < 0) { | |
4186ecf8 | 1124 | mutex_unlock(&sn9c102_sysfs_lock); |
1da177e4 LT |
1125 | return -EIO; |
1126 | } | |
1127 | ||
1128 | count = sprintf(buf, "%d\n", val); | |
1129 | ||
f423b9a8 | 1130 | DBG(3, "Read bytes: %zd, value: %d", count, val); |
1da177e4 | 1131 | |
4186ecf8 | 1132 | mutex_unlock(&sn9c102_sysfs_lock); |
1da177e4 LT |
1133 | |
1134 | return count; | |
d56410e0 | 1135 | } |
1da177e4 LT |
1136 | |
1137 | ||
1138 | static ssize_t | |
54bd5b66 KS |
1139 | sn9c102_store_val(struct device* cd, struct device_attribute *attr, |
1140 | const char* buf, size_t len) | |
1da177e4 LT |
1141 | { |
1142 | struct sn9c102_device* cam; | |
f327ebbd | 1143 | u16 value; |
1da177e4 LT |
1144 | ssize_t count; |
1145 | int err; | |
1146 | ||
4186ecf8 | 1147 | if (mutex_lock_interruptible(&sn9c102_sysfs_lock)) |
1da177e4 LT |
1148 | return -ERESTARTSYS; |
1149 | ||
22a04f10 | 1150 | cam = video_get_drvdata(container_of(cd, struct video_device, dev)); |
1da177e4 | 1151 | if (!cam) { |
4186ecf8 | 1152 | mutex_unlock(&sn9c102_sysfs_lock); |
1da177e4 LT |
1153 | return -ENODEV; |
1154 | } | |
1155 | ||
f327ebbd | 1156 | value = sn9c102_strtou16(buf, len, &count); |
1da177e4 | 1157 | if (!count) { |
4186ecf8 | 1158 | mutex_unlock(&sn9c102_sysfs_lock); |
1da177e4 LT |
1159 | return -EINVAL; |
1160 | } | |
1161 | ||
1162 | err = sn9c102_write_reg(cam, value, cam->sysfs.reg); | |
1163 | if (err) { | |
4186ecf8 | 1164 | mutex_unlock(&sn9c102_sysfs_lock); |
1da177e4 LT |
1165 | return -EIO; |
1166 | } | |
1167 | ||
f327ebbd | 1168 | DBG(2, "Written SN9C1XX reg. 0x%02X, val. 0x%02X", |
a966f3e7 LR |
1169 | cam->sysfs.reg, value); |
1170 | DBG(3, "Written bytes: %zd", count); | |
1da177e4 | 1171 | |
4186ecf8 | 1172 | mutex_unlock(&sn9c102_sysfs_lock); |
1da177e4 LT |
1173 | |
1174 | return count; | |
1175 | } | |
1176 | ||
1177 | ||
54bd5b66 KS |
1178 | static ssize_t sn9c102_show_i2c_reg(struct device* cd, |
1179 | struct device_attribute *attr, char* buf) | |
1da177e4 LT |
1180 | { |
1181 | struct sn9c102_device* cam; | |
1182 | ssize_t count; | |
1183 | ||
4186ecf8 | 1184 | if (mutex_lock_interruptible(&sn9c102_sysfs_lock)) |
1da177e4 LT |
1185 | return -ERESTARTSYS; |
1186 | ||
22a04f10 | 1187 | cam = video_get_drvdata(container_of(cd, struct video_device, dev)); |
1da177e4 | 1188 | if (!cam) { |
4186ecf8 | 1189 | mutex_unlock(&sn9c102_sysfs_lock); |
1da177e4 LT |
1190 | return -ENODEV; |
1191 | } | |
1192 | ||
1193 | count = sprintf(buf, "%u\n", cam->sysfs.i2c_reg); | |
1194 | ||
a966f3e7 | 1195 | DBG(3, "Read bytes: %zd", count); |
1da177e4 | 1196 | |
4186ecf8 | 1197 | mutex_unlock(&sn9c102_sysfs_lock); |
1da177e4 LT |
1198 | |
1199 | return count; | |
1200 | } | |
1201 | ||
1202 | ||
d56410e0 | 1203 | static ssize_t |
54bd5b66 KS |
1204 | sn9c102_store_i2c_reg(struct device* cd, struct device_attribute *attr, |
1205 | const char* buf, size_t len) | |
1da177e4 LT |
1206 | { |
1207 | struct sn9c102_device* cam; | |
f327ebbd | 1208 | u16 index; |
1da177e4 LT |
1209 | ssize_t count; |
1210 | ||
4186ecf8 | 1211 | if (mutex_lock_interruptible(&sn9c102_sysfs_lock)) |
1da177e4 LT |
1212 | return -ERESTARTSYS; |
1213 | ||
22a04f10 | 1214 | cam = video_get_drvdata(container_of(cd, struct video_device, dev)); |
1da177e4 | 1215 | if (!cam) { |
4186ecf8 | 1216 | mutex_unlock(&sn9c102_sysfs_lock); |
1da177e4 LT |
1217 | return -ENODEV; |
1218 | } | |
1219 | ||
f327ebbd | 1220 | index = sn9c102_strtou16(buf, len, &count); |
1da177e4 | 1221 | if (!count) { |
4186ecf8 | 1222 | mutex_unlock(&sn9c102_sysfs_lock); |
1da177e4 LT |
1223 | return -EINVAL; |
1224 | } | |
1225 | ||
1226 | cam->sysfs.i2c_reg = index; | |
1227 | ||
a966f3e7 LR |
1228 | DBG(2, "Moved sensor register index to 0x%02X", cam->sysfs.i2c_reg); |
1229 | DBG(3, "Written bytes: %zd", count); | |
1da177e4 | 1230 | |
4186ecf8 | 1231 | mutex_unlock(&sn9c102_sysfs_lock); |
1da177e4 LT |
1232 | |
1233 | return count; | |
1234 | } | |
1235 | ||
1236 | ||
54bd5b66 KS |
1237 | static ssize_t sn9c102_show_i2c_val(struct device* cd, |
1238 | struct device_attribute *attr, char* buf) | |
1da177e4 LT |
1239 | { |
1240 | struct sn9c102_device* cam; | |
1241 | ssize_t count; | |
1242 | int val; | |
1243 | ||
4186ecf8 | 1244 | if (mutex_lock_interruptible(&sn9c102_sysfs_lock)) |
1da177e4 LT |
1245 | return -ERESTARTSYS; |
1246 | ||
22a04f10 | 1247 | cam = video_get_drvdata(container_of(cd, struct video_device, dev)); |
1da177e4 | 1248 | if (!cam) { |
4186ecf8 | 1249 | mutex_unlock(&sn9c102_sysfs_lock); |
1da177e4 LT |
1250 | return -ENODEV; |
1251 | } | |
1252 | ||
2ffab02f | 1253 | if (!(cam->sensor.sysfs_ops & SN9C102_I2C_READ)) { |
4186ecf8 | 1254 | mutex_unlock(&sn9c102_sysfs_lock); |
1da177e4 LT |
1255 | return -ENOSYS; |
1256 | } | |
1257 | ||
1258 | if ((val = sn9c102_i2c_read(cam, cam->sysfs.i2c_reg)) < 0) { | |
4186ecf8 | 1259 | mutex_unlock(&sn9c102_sysfs_lock); |
1da177e4 LT |
1260 | return -EIO; |
1261 | } | |
1262 | ||
1263 | count = sprintf(buf, "%d\n", val); | |
1264 | ||
f423b9a8 | 1265 | DBG(3, "Read bytes: %zd, value: %d", count, val); |
1da177e4 | 1266 | |
4186ecf8 | 1267 | mutex_unlock(&sn9c102_sysfs_lock); |
1da177e4 LT |
1268 | |
1269 | return count; | |
d56410e0 | 1270 | } |
1da177e4 LT |
1271 | |
1272 | ||
1273 | static ssize_t | |
54bd5b66 KS |
1274 | sn9c102_store_i2c_val(struct device* cd, struct device_attribute *attr, |
1275 | const char* buf, size_t len) | |
1da177e4 LT |
1276 | { |
1277 | struct sn9c102_device* cam; | |
f327ebbd | 1278 | u16 value; |
1da177e4 LT |
1279 | ssize_t count; |
1280 | int err; | |
1281 | ||
4186ecf8 | 1282 | if (mutex_lock_interruptible(&sn9c102_sysfs_lock)) |
1da177e4 LT |
1283 | return -ERESTARTSYS; |
1284 | ||
22a04f10 | 1285 | cam = video_get_drvdata(container_of(cd, struct video_device, dev)); |
1da177e4 | 1286 | if (!cam) { |
4186ecf8 | 1287 | mutex_unlock(&sn9c102_sysfs_lock); |
1da177e4 LT |
1288 | return -ENODEV; |
1289 | } | |
1290 | ||
2ffab02f | 1291 | if (!(cam->sensor.sysfs_ops & SN9C102_I2C_WRITE)) { |
4186ecf8 | 1292 | mutex_unlock(&sn9c102_sysfs_lock); |
1da177e4 LT |
1293 | return -ENOSYS; |
1294 | } | |
1295 | ||
f327ebbd | 1296 | value = sn9c102_strtou16(buf, len, &count); |
1da177e4 | 1297 | if (!count) { |
4186ecf8 | 1298 | mutex_unlock(&sn9c102_sysfs_lock); |
1da177e4 LT |
1299 | return -EINVAL; |
1300 | } | |
1301 | ||
1302 | err = sn9c102_i2c_write(cam, cam->sysfs.i2c_reg, value); | |
1303 | if (err) { | |
4186ecf8 | 1304 | mutex_unlock(&sn9c102_sysfs_lock); |
1da177e4 LT |
1305 | return -EIO; |
1306 | } | |
1307 | ||
1308 | DBG(2, "Written sensor reg. 0x%02X, val. 0x%02X", | |
a966f3e7 LR |
1309 | cam->sysfs.i2c_reg, value); |
1310 | DBG(3, "Written bytes: %zd", count); | |
1da177e4 | 1311 | |
4186ecf8 | 1312 | mutex_unlock(&sn9c102_sysfs_lock); |
1da177e4 LT |
1313 | |
1314 | return count; | |
1315 | } | |
1316 | ||
1317 | ||
1318 | static ssize_t | |
54bd5b66 KS |
1319 | sn9c102_store_green(struct device* cd, struct device_attribute *attr, |
1320 | const char* buf, size_t len) | |
1da177e4 LT |
1321 | { |
1322 | struct sn9c102_device* cam; | |
1323 | enum sn9c102_bridge bridge; | |
1324 | ssize_t res = 0; | |
f327ebbd | 1325 | u16 value; |
1da177e4 LT |
1326 | ssize_t count; |
1327 | ||
4186ecf8 | 1328 | if (mutex_lock_interruptible(&sn9c102_sysfs_lock)) |
1da177e4 LT |
1329 | return -ERESTARTSYS; |
1330 | ||
22a04f10 | 1331 | cam = video_get_drvdata(container_of(cd, struct video_device, dev)); |
1da177e4 | 1332 | if (!cam) { |
4186ecf8 | 1333 | mutex_unlock(&sn9c102_sysfs_lock); |
1da177e4 LT |
1334 | return -ENODEV; |
1335 | } | |
1336 | ||
1337 | bridge = cam->bridge; | |
1338 | ||
4186ecf8 | 1339 | mutex_unlock(&sn9c102_sysfs_lock); |
1da177e4 | 1340 | |
f327ebbd | 1341 | value = sn9c102_strtou16(buf, len, &count); |
1da177e4 LT |
1342 | if (!count) |
1343 | return -EINVAL; | |
1344 | ||
1345 | switch (bridge) { | |
1346 | case BRIDGE_SN9C101: | |
1347 | case BRIDGE_SN9C102: | |
1348 | if (value > 0x0f) | |
1349 | return -EINVAL; | |
54bd5b66 KS |
1350 | if ((res = sn9c102_store_reg(cd, attr, "0x11", 4)) >= 0) |
1351 | res = sn9c102_store_val(cd, attr, buf, len); | |
1da177e4 LT |
1352 | break; |
1353 | case BRIDGE_SN9C103: | |
f327ebbd LR |
1354 | case BRIDGE_SN9C105: |
1355 | case BRIDGE_SN9C120: | |
1da177e4 LT |
1356 | if (value > 0x7f) |
1357 | return -EINVAL; | |
54bd5b66 KS |
1358 | if ((res = sn9c102_store_reg(cd, attr, "0x07", 4)) >= 0) |
1359 | res = sn9c102_store_val(cd, attr, buf, len); | |
1da177e4 LT |
1360 | break; |
1361 | } | |
1362 | ||
1363 | return res; | |
1364 | } | |
1365 | ||
1366 | ||
1367 | static ssize_t | |
54bd5b66 KS |
1368 | sn9c102_store_blue(struct device* cd, struct device_attribute *attr, |
1369 | const char* buf, size_t len) | |
1da177e4 LT |
1370 | { |
1371 | ssize_t res = 0; | |
f327ebbd | 1372 | u16 value; |
1da177e4 LT |
1373 | ssize_t count; |
1374 | ||
f327ebbd | 1375 | value = sn9c102_strtou16(buf, len, &count); |
1da177e4 LT |
1376 | if (!count || value > 0x7f) |
1377 | return -EINVAL; | |
1378 | ||
54bd5b66 KS |
1379 | if ((res = sn9c102_store_reg(cd, attr, "0x06", 4)) >= 0) |
1380 | res = sn9c102_store_val(cd, attr, buf, len); | |
1da177e4 LT |
1381 | |
1382 | return res; | |
1383 | } | |
1384 | ||
1385 | ||
1386 | static ssize_t | |
54bd5b66 KS |
1387 | sn9c102_store_red(struct device* cd, struct device_attribute *attr, |
1388 | const char* buf, size_t len) | |
1da177e4 LT |
1389 | { |
1390 | ssize_t res = 0; | |
f327ebbd | 1391 | u16 value; |
1da177e4 LT |
1392 | ssize_t count; |
1393 | ||
f327ebbd | 1394 | value = sn9c102_strtou16(buf, len, &count); |
1da177e4 LT |
1395 | if (!count || value > 0x7f) |
1396 | return -EINVAL; | |
1397 | ||
54bd5b66 KS |
1398 | if ((res = sn9c102_store_reg(cd, attr, "0x05", 4)) >= 0) |
1399 | res = sn9c102_store_val(cd, attr, buf, len); | |
1da177e4 LT |
1400 | |
1401 | return res; | |
1402 | } | |
1403 | ||
1404 | ||
54bd5b66 KS |
1405 | static ssize_t sn9c102_show_frame_header(struct device* cd, |
1406 | struct device_attribute *attr, | |
1407 | char* buf) | |
1da177e4 LT |
1408 | { |
1409 | struct sn9c102_device* cam; | |
1410 | ssize_t count; | |
1411 | ||
22a04f10 | 1412 | cam = video_get_drvdata(container_of(cd, struct video_device, dev)); |
1da177e4 LT |
1413 | if (!cam) |
1414 | return -ENODEV; | |
1415 | ||
1416 | count = sizeof(cam->sysfs.frame_header); | |
1417 | memcpy(buf, cam->sysfs.frame_header, count); | |
1418 | ||
a966f3e7 | 1419 | DBG(3, "Frame header, read bytes: %zd", count); |
1da177e4 LT |
1420 | |
1421 | return count; | |
d56410e0 | 1422 | } |
1da177e4 LT |
1423 | |
1424 | ||
54bd5b66 KS |
1425 | static DEVICE_ATTR(reg, S_IRUGO | S_IWUSR, sn9c102_show_reg, sn9c102_store_reg); |
1426 | static DEVICE_ATTR(val, S_IRUGO | S_IWUSR, sn9c102_show_val, sn9c102_store_val); | |
1427 | static DEVICE_ATTR(i2c_reg, S_IRUGO | S_IWUSR, | |
1428 | sn9c102_show_i2c_reg, sn9c102_store_i2c_reg); | |
1429 | static DEVICE_ATTR(i2c_val, S_IRUGO | S_IWUSR, | |
1430 | sn9c102_show_i2c_val, sn9c102_store_i2c_val); | |
14ddc318 VK |
1431 | static DEVICE_ATTR(green, S_IWUSR, NULL, sn9c102_store_green); |
1432 | static DEVICE_ATTR(blue, S_IWUSR, NULL, sn9c102_store_blue); | |
1433 | static DEVICE_ATTR(red, S_IWUSR, NULL, sn9c102_store_red); | |
54bd5b66 | 1434 | static DEVICE_ATTR(frame_header, S_IRUGO, sn9c102_show_frame_header, NULL); |
1da177e4 LT |
1435 | |
1436 | ||
c12e3be0 | 1437 | static int sn9c102_create_sysfs(struct sn9c102_device* cam) |
1da177e4 | 1438 | { |
22a04f10 | 1439 | struct device *dev = &(cam->v4ldev->dev); |
f327ebbd | 1440 | int err = 0; |
c12e3be0 | 1441 | |
22a04f10 | 1442 | if ((err = device_create_file(dev, &dev_attr_reg))) |
f327ebbd | 1443 | goto err_out; |
22a04f10 | 1444 | if ((err = device_create_file(dev, &dev_attr_val))) |
f327ebbd | 1445 | goto err_reg; |
22a04f10 | 1446 | if ((err = device_create_file(dev, &dev_attr_frame_header))) |
f327ebbd | 1447 | goto err_val; |
1da177e4 | 1448 | |
2ffab02f | 1449 | if (cam->sensor.sysfs_ops) { |
22a04f10 | 1450 | if ((err = device_create_file(dev, &dev_attr_i2c_reg))) |
f327ebbd | 1451 | goto err_frame_header; |
22a04f10 | 1452 | if ((err = device_create_file(dev, &dev_attr_i2c_val))) |
f327ebbd | 1453 | goto err_i2c_reg; |
c12e3be0 JG |
1454 | } |
1455 | ||
1456 | if (cam->bridge == BRIDGE_SN9C101 || cam->bridge == BRIDGE_SN9C102) { | |
22a04f10 | 1457 | if ((err = device_create_file(dev, &dev_attr_green))) |
f327ebbd LR |
1458 | goto err_i2c_val; |
1459 | } else { | |
22a04f10 | 1460 | if ((err = device_create_file(dev, &dev_attr_blue))) |
f327ebbd | 1461 | goto err_i2c_val; |
22a04f10 | 1462 | if ((err = device_create_file(dev, &dev_attr_red))) |
f327ebbd | 1463 | goto err_blue; |
1da177e4 | 1464 | } |
c12e3be0 JG |
1465 | |
1466 | return 0; | |
1467 | ||
1468 | err_blue: | |
22a04f10 | 1469 | device_remove_file(dev, &dev_attr_blue); |
c12e3be0 JG |
1470 | err_i2c_val: |
1471 | if (cam->sensor.sysfs_ops) | |
22a04f10 | 1472 | device_remove_file(dev, &dev_attr_i2c_val); |
c12e3be0 JG |
1473 | err_i2c_reg: |
1474 | if (cam->sensor.sysfs_ops) | |
22a04f10 | 1475 | device_remove_file(dev, &dev_attr_i2c_reg); |
f327ebbd | 1476 | err_frame_header: |
22a04f10 | 1477 | device_remove_file(dev, &dev_attr_frame_header); |
c12e3be0 | 1478 | err_val: |
22a04f10 | 1479 | device_remove_file(dev, &dev_attr_val); |
c12e3be0 | 1480 | err_reg: |
22a04f10 | 1481 | device_remove_file(dev, &dev_attr_reg); |
f327ebbd LR |
1482 | err_out: |
1483 | return err; | |
1da177e4 | 1484 | } |
cd6fcc55 | 1485 | #endif /* CONFIG_VIDEO_ADV_DEBUG */ |
1da177e4 LT |
1486 | |
1487 | /*****************************************************************************/ | |
1488 | ||
1489 | static int | |
1490 | sn9c102_set_pix_format(struct sn9c102_device* cam, struct v4l2_pix_format* pix) | |
1491 | { | |
1492 | int err = 0; | |
1493 | ||
f327ebbd LR |
1494 | if (pix->pixelformat == V4L2_PIX_FMT_SN9C10X || |
1495 | pix->pixelformat == V4L2_PIX_FMT_JPEG) { | |
1496 | switch (cam->bridge) { | |
1497 | case BRIDGE_SN9C101: | |
1498 | case BRIDGE_SN9C102: | |
1499 | case BRIDGE_SN9C103: | |
1500 | err += sn9c102_write_reg(cam, cam->reg[0x18] | 0x80, | |
1501 | 0x18); | |
1502 | break; | |
1503 | case BRIDGE_SN9C105: | |
1504 | case BRIDGE_SN9C120: | |
1505 | err += sn9c102_write_reg(cam, cam->reg[0x18] & 0x7f, | |
1506 | 0x18); | |
1507 | break; | |
1508 | } | |
1509 | } else { | |
1510 | switch (cam->bridge) { | |
1511 | case BRIDGE_SN9C101: | |
1512 | case BRIDGE_SN9C102: | |
1513 | case BRIDGE_SN9C103: | |
1514 | err += sn9c102_write_reg(cam, cam->reg[0x18] & 0x7f, | |
1515 | 0x18); | |
1516 | break; | |
1517 | case BRIDGE_SN9C105: | |
1518 | case BRIDGE_SN9C120: | |
1519 | err += sn9c102_write_reg(cam, cam->reg[0x18] | 0x80, | |
1520 | 0x18); | |
1521 | break; | |
1522 | } | |
1523 | } | |
1da177e4 LT |
1524 | |
1525 | return err ? -EIO : 0; | |
1526 | } | |
1527 | ||
1528 | ||
1529 | static int | |
1530 | sn9c102_set_compression(struct sn9c102_device* cam, | |
d56410e0 | 1531 | struct v4l2_jpegcompression* compression) |
1da177e4 | 1532 | { |
f327ebbd | 1533 | int i, err = 0; |
1da177e4 | 1534 | |
f327ebbd LR |
1535 | switch (cam->bridge) { |
1536 | case BRIDGE_SN9C101: | |
1537 | case BRIDGE_SN9C102: | |
1538 | case BRIDGE_SN9C103: | |
f423b9a8 | 1539 | if (compression->quality == 0) |
f327ebbd LR |
1540 | err += sn9c102_write_reg(cam, cam->reg[0x17] | 0x01, |
1541 | 0x17); | |
f423b9a8 | 1542 | else if (compression->quality == 1) |
f327ebbd LR |
1543 | err += sn9c102_write_reg(cam, cam->reg[0x17] & 0xfe, |
1544 | 0x17); | |
1545 | break; | |
1546 | case BRIDGE_SN9C105: | |
1547 | case BRIDGE_SN9C120: | |
1548 | if (compression->quality == 0) { | |
1549 | for (i = 0; i <= 63; i++) { | |
1550 | err += sn9c102_write_reg(cam, | |
f423b9a8 | 1551 | SN9C102_Y_QTABLE1[i], |
f327ebbd LR |
1552 | 0x100 + i); |
1553 | err += sn9c102_write_reg(cam, | |
f423b9a8 | 1554 | SN9C102_UV_QTABLE1[i], |
f327ebbd LR |
1555 | 0x140 + i); |
1556 | } | |
1557 | err += sn9c102_write_reg(cam, cam->reg[0x18] & 0xbf, | |
1558 | 0x18); | |
1559 | } else if (compression->quality == 1) { | |
1560 | for (i = 0; i <= 63; i++) { | |
1561 | err += sn9c102_write_reg(cam, | |
1562 | SN9C102_Y_QTABLE1[i], | |
1563 | 0x100 + i); | |
1564 | err += sn9c102_write_reg(cam, | |
1565 | SN9C102_UV_QTABLE1[i], | |
1566 | 0x140 + i); | |
1567 | } | |
1568 | err += sn9c102_write_reg(cam, cam->reg[0x18] | 0x40, | |
1569 | 0x18); | |
1570 | } | |
1571 | break; | |
1572 | } | |
1da177e4 LT |
1573 | |
1574 | return err ? -EIO : 0; | |
1575 | } | |
1576 | ||
1577 | ||
1578 | static int sn9c102_set_scale(struct sn9c102_device* cam, u8 scale) | |
1579 | { | |
1580 | u8 r = 0; | |
1581 | int err = 0; | |
1582 | ||
1583 | if (scale == 1) | |
1584 | r = cam->reg[0x18] & 0xcf; | |
1585 | else if (scale == 2) { | |
1586 | r = cam->reg[0x18] & 0xcf; | |
1587 | r |= 0x10; | |
1588 | } else if (scale == 4) | |
1589 | r = cam->reg[0x18] | 0x20; | |
1590 | ||
1591 | err += sn9c102_write_reg(cam, r, 0x18); | |
1592 | if (err) | |
1593 | return -EIO; | |
1594 | ||
a966f3e7 | 1595 | PDBGG("Scaling factor: %u", scale); |
1da177e4 LT |
1596 | |
1597 | return 0; | |
1598 | } | |
1599 | ||
1600 | ||
1601 | static int sn9c102_set_crop(struct sn9c102_device* cam, struct v4l2_rect* rect) | |
1602 | { | |
2ffab02f | 1603 | struct sn9c102_sensor* s = &cam->sensor; |
1da177e4 LT |
1604 | u8 h_start = (u8)(rect->left - s->cropcap.bounds.left), |
1605 | v_start = (u8)(rect->top - s->cropcap.bounds.top), | |
1606 | h_size = (u8)(rect->width / 16), | |
1607 | v_size = (u8)(rect->height / 16); | |
1608 | int err = 0; | |
1609 | ||
1610 | err += sn9c102_write_reg(cam, h_start, 0x12); | |
1611 | err += sn9c102_write_reg(cam, v_start, 0x13); | |
1612 | err += sn9c102_write_reg(cam, h_size, 0x15); | |
1613 | err += sn9c102_write_reg(cam, v_size, 0x16); | |
1614 | if (err) | |
1615 | return -EIO; | |
1616 | ||
1617 | PDBGG("h_start, v_start, h_size, v_size, ho_size, vo_size " | |
a966f3e7 | 1618 | "%u %u %u %u", h_start, v_start, h_size, v_size); |
1da177e4 LT |
1619 | |
1620 | return 0; | |
1621 | } | |
1622 | ||
1623 | ||
1624 | static int sn9c102_init(struct sn9c102_device* cam) | |
1625 | { | |
2ffab02f | 1626 | struct sn9c102_sensor* s = &cam->sensor; |
1da177e4 LT |
1627 | struct v4l2_control ctrl; |
1628 | struct v4l2_queryctrl *qctrl; | |
1629 | struct v4l2_rect* rect; | |
52950ed4 | 1630 | u8 i = 0; |
1da177e4 LT |
1631 | int err = 0; |
1632 | ||
1633 | if (!(cam->state & DEV_INITIALIZED)) { | |
3770be34 LR |
1634 | mutex_init(&cam->open_mutex); |
1635 | init_waitqueue_head(&cam->wait_open); | |
1da177e4 LT |
1636 | qctrl = s->qctrl; |
1637 | rect = &(s->cropcap.defrect); | |
1638 | } else { /* use current values */ | |
1639 | qctrl = s->_qctrl; | |
1640 | rect = &(s->_rect); | |
1641 | } | |
1642 | ||
1643 | err += sn9c102_set_scale(cam, rect->width / s->pix_format.width); | |
1644 | err += sn9c102_set_crop(cam, rect); | |
1645 | if (err) | |
1646 | return err; | |
1647 | ||
1648 | if (s->init) { | |
1649 | err = s->init(cam); | |
1650 | if (err) { | |
a966f3e7 | 1651 | DBG(3, "Sensor initialization failed"); |
1da177e4 LT |
1652 | return err; |
1653 | } | |
1654 | } | |
1655 | ||
1656 | if (!(cam->state & DEV_INITIALIZED)) | |
f327ebbd LR |
1657 | if (cam->bridge == BRIDGE_SN9C101 || |
1658 | cam->bridge == BRIDGE_SN9C102 || | |
1659 | cam->bridge == BRIDGE_SN9C103) { | |
f423b9a8 LR |
1660 | if (s->pix_format.pixelformat == V4L2_PIX_FMT_JPEG) |
1661 | s->pix_format.pixelformat= V4L2_PIX_FMT_SBGGR8; | |
f327ebbd LR |
1662 | cam->compression.quality = cam->reg[0x17] & 0x01 ? |
1663 | 0 : 1; | |
1664 | } else { | |
f423b9a8 LR |
1665 | if (s->pix_format.pixelformat == V4L2_PIX_FMT_SN9C10X) |
1666 | s->pix_format.pixelformat = V4L2_PIX_FMT_JPEG; | |
f327ebbd LR |
1667 | cam->compression.quality = cam->reg[0x18] & 0x40 ? |
1668 | 0 : 1; | |
1669 | err += sn9c102_set_compression(cam, &cam->compression); | |
1670 | } | |
1da177e4 LT |
1671 | else |
1672 | err += sn9c102_set_compression(cam, &cam->compression); | |
1673 | err += sn9c102_set_pix_format(cam, &s->pix_format); | |
1674 | if (s->set_pix_format) | |
1675 | err += s->set_pix_format(cam, &s->pix_format); | |
1676 | if (err) | |
1677 | return err; | |
1678 | ||
f327ebbd LR |
1679 | if (s->pix_format.pixelformat == V4L2_PIX_FMT_SN9C10X || |
1680 | s->pix_format.pixelformat == V4L2_PIX_FMT_JPEG) | |
52950ed4 | 1681 | DBG(3, "Compressed video format is active, quality %d", |
a966f3e7 | 1682 | cam->compression.quality); |
1da177e4 | 1683 | else |
a966f3e7 | 1684 | DBG(3, "Uncompressed video format is active"); |
1da177e4 LT |
1685 | |
1686 | if (s->set_crop) | |
1687 | if ((err = s->set_crop(cam, rect))) { | |
a966f3e7 | 1688 | DBG(3, "set_crop() failed"); |
1da177e4 LT |
1689 | return err; |
1690 | } | |
1691 | ||
1692 | if (s->set_ctrl) { | |
52950ed4 TK |
1693 | for (i = 0; i < ARRAY_SIZE(s->qctrl); i++) |
1694 | if (s->qctrl[i].id != 0 && | |
1da177e4 LT |
1695 | !(s->qctrl[i].flags & V4L2_CTRL_FLAG_DISABLED)) { |
1696 | ctrl.id = s->qctrl[i].id; | |
1697 | ctrl.value = qctrl[i].default_value; | |
1698 | err = s->set_ctrl(cam, &ctrl); | |
1699 | if (err) { | |
1700 | DBG(3, "Set %s control failed", | |
a966f3e7 | 1701 | s->qctrl[i].name); |
1da177e4 LT |
1702 | return err; |
1703 | } | |
1704 | DBG(3, "Image sensor supports '%s' control", | |
a966f3e7 | 1705 | s->qctrl[i].name); |
1da177e4 LT |
1706 | } |
1707 | } | |
1708 | ||
1709 | if (!(cam->state & DEV_INITIALIZED)) { | |
4186ecf8 | 1710 | mutex_init(&cam->fileop_mutex); |
1da177e4 LT |
1711 | spin_lock_init(&cam->queue_lock); |
1712 | init_waitqueue_head(&cam->wait_frame); | |
1713 | init_waitqueue_head(&cam->wait_stream); | |
1714 | cam->nreadbuffers = 2; | |
1715 | memcpy(s->_qctrl, s->qctrl, sizeof(s->qctrl)); | |
52950ed4 | 1716 | memcpy(&(s->_rect), &(s->cropcap.defrect), |
1da177e4 LT |
1717 | sizeof(struct v4l2_rect)); |
1718 | cam->state |= DEV_INITIALIZED; | |
1719 | } | |
1720 | ||
a966f3e7 | 1721 | DBG(2, "Initialization succeeded"); |
1da177e4 LT |
1722 | return 0; |
1723 | } | |
1724 | ||
3770be34 | 1725 | /*****************************************************************************/ |
1da177e4 | 1726 | |
3770be34 | 1727 | static void sn9c102_release_resources(struct kref *kref) |
1da177e4 | 1728 | { |
3770be34 LR |
1729 | struct sn9c102_device *cam; |
1730 | ||
4186ecf8 | 1731 | mutex_lock(&sn9c102_sysfs_lock); |
1da177e4 | 1732 | |
3770be34 LR |
1733 | cam = container_of(kref, struct sn9c102_device, kref); |
1734 | ||
38c7c036 LP |
1735 | DBG(2, "V4L2 device %s deregistered", |
1736 | video_device_node_name(cam->v4ldev)); | |
1da177e4 LT |
1737 | video_set_drvdata(cam->v4ldev, NULL); |
1738 | video_unregister_device(cam->v4ldev); | |
3770be34 LR |
1739 | usb_put_dev(cam->usbdev); |
1740 | kfree(cam->control_buffer); | |
1741 | kfree(cam); | |
1da177e4 | 1742 | |
4186ecf8 | 1743 | mutex_unlock(&sn9c102_sysfs_lock); |
1da177e4 | 1744 | |
1da177e4 LT |
1745 | } |
1746 | ||
1da177e4 | 1747 | |
bec43661 | 1748 | static int sn9c102_open(struct file *filp) |
1da177e4 LT |
1749 | { |
1750 | struct sn9c102_device* cam; | |
1751 | int err = 0; | |
1752 | ||
1753 | /* | |
3770be34 LR |
1754 | A read_trylock() in open() is the only safe way to prevent race |
1755 | conditions with disconnect(), one close() and multiple (not | |
1756 | necessarily simultaneous) attempts to open(). For example, it | |
1757 | prevents from waiting for a second access, while the device | |
1758 | structure is being deallocated, after a possible disconnect() and | |
1759 | during a following close() holding the write lock: given that, after | |
1760 | this deallocation, no access will be possible anymore, using the | |
1761 | non-trylock version would have let open() gain the access to the | |
1762 | device structure improperly. | |
1763 | For this reason the lock must also not be per-device. | |
1da177e4 | 1764 | */ |
3770be34 | 1765 | if (!down_read_trylock(&sn9c102_dev_lock)) |
1da177e4 LT |
1766 | return -ERESTARTSYS; |
1767 | ||
c170ecf4 | 1768 | cam = video_drvdata(filp); |
1da177e4 | 1769 | |
3770be34 LR |
1770 | if (wait_for_completion_interruptible(&cam->probe)) { |
1771 | up_read(&sn9c102_dev_lock); | |
1772 | return -ERESTARTSYS; | |
1773 | } | |
1774 | ||
1775 | kref_get(&cam->kref); | |
1776 | ||
1777 | /* | |
1778 | Make sure to isolate all the simultaneous opens. | |
1779 | */ | |
1780 | if (mutex_lock_interruptible(&cam->open_mutex)) { | |
1781 | kref_put(&cam->kref, sn9c102_release_resources); | |
1782 | up_read(&sn9c102_dev_lock); | |
1da177e4 LT |
1783 | return -ERESTARTSYS; |
1784 | } | |
1785 | ||
3770be34 LR |
1786 | if (cam->state & DEV_DISCONNECTED) { |
1787 | DBG(1, "Device not present"); | |
1788 | err = -ENODEV; | |
1789 | goto out; | |
1790 | } | |
1791 | ||
1da177e4 | 1792 | if (cam->users) { |
38c7c036 LP |
1793 | DBG(2, "Device %s is already in use", |
1794 | video_device_node_name(cam->v4ldev)); | |
f327ebbd | 1795 | DBG(3, "Simultaneous opens are not supported"); |
3770be34 LR |
1796 | /* |
1797 | open() must follow the open flags and should block | |
1798 | eventually while the device is in use. | |
1799 | */ | |
1da177e4 LT |
1800 | if ((filp->f_flags & O_NONBLOCK) || |
1801 | (filp->f_flags & O_NDELAY)) { | |
1802 | err = -EWOULDBLOCK; | |
1803 | goto out; | |
1804 | } | |
3770be34 LR |
1805 | DBG(2, "A blocking open() has been requested. Wait for the " |
1806 | "device to be released..."); | |
1807 | up_read(&sn9c102_dev_lock); | |
1808 | /* | |
1809 | We will not release the "open_mutex" lock, so that only one | |
1810 | process can be in the wait queue below. This way the process | |
25985edc | 1811 | will be sleeping while holding the lock, without losing its |
3770be34 LR |
1812 | priority after any wake_up(). |
1813 | */ | |
1814 | err = wait_event_interruptible_exclusive(cam->wait_open, | |
1815 | (cam->state & DEV_DISCONNECTED) | |
d56410e0 | 1816 | || !cam->users); |
3770be34 LR |
1817 | down_read(&sn9c102_dev_lock); |
1818 | if (err) | |
1819 | goto out; | |
1da177e4 | 1820 | if (cam->state & DEV_DISCONNECTED) { |
3770be34 LR |
1821 | err = -ENODEV; |
1822 | goto out; | |
1da177e4 | 1823 | } |
1da177e4 LT |
1824 | } |
1825 | ||
1da177e4 LT |
1826 | if (cam->state & DEV_MISCONFIGURED) { |
1827 | err = sn9c102_init(cam); | |
1828 | if (err) { | |
1829 | DBG(1, "Initialization failed again. " | |
a966f3e7 | 1830 | "I will retry on next open()."); |
1da177e4 LT |
1831 | goto out; |
1832 | } | |
1833 | cam->state &= ~DEV_MISCONFIGURED; | |
1834 | } | |
1835 | ||
1836 | if ((err = sn9c102_start_transfer(cam))) | |
1837 | goto out; | |
1838 | ||
1839 | filp->private_data = cam; | |
1840 | cam->users++; | |
1841 | cam->io = IO_NONE; | |
1842 | cam->stream = STREAM_OFF; | |
1843 | cam->nbuffers = 0; | |
1844 | cam->frame_count = 0; | |
1845 | sn9c102_empty_framequeues(cam); | |
1846 | ||
38c7c036 | 1847 | DBG(3, "Video device %s is open", video_device_node_name(cam->v4ldev)); |
1da177e4 LT |
1848 | |
1849 | out: | |
3770be34 LR |
1850 | mutex_unlock(&cam->open_mutex); |
1851 | if (err) | |
1852 | kref_put(&cam->kref, sn9c102_release_resources); | |
1853 | ||
1854 | up_read(&sn9c102_dev_lock); | |
1da177e4 LT |
1855 | return err; |
1856 | } | |
1857 | ||
1858 | ||
bec43661 | 1859 | static int sn9c102_release(struct file *filp) |
1da177e4 | 1860 | { |
3770be34 | 1861 | struct sn9c102_device* cam; |
1da177e4 | 1862 | |
3770be34 | 1863 | down_write(&sn9c102_dev_lock); |
1da177e4 | 1864 | |
c170ecf4 | 1865 | cam = video_drvdata(filp); |
1da177e4 | 1866 | |
3770be34 | 1867 | sn9c102_stop_transfer(cam); |
1da177e4 | 1868 | sn9c102_release_buffers(cam); |
1da177e4 | 1869 | cam->users--; |
3770be34 | 1870 | wake_up_interruptible_nr(&cam->wait_open, 1); |
1da177e4 | 1871 | |
38c7c036 | 1872 | DBG(3, "Video device %s closed", video_device_node_name(cam->v4ldev)); |
1da177e4 | 1873 | |
3770be34 LR |
1874 | kref_put(&cam->kref, sn9c102_release_resources); |
1875 | ||
1876 | up_write(&sn9c102_dev_lock); | |
1da177e4 LT |
1877 | |
1878 | return 0; | |
1879 | } | |
1880 | ||
1881 | ||
1882 | static ssize_t | |
1883 | sn9c102_read(struct file* filp, char __user * buf, size_t count, loff_t* f_pos) | |
1884 | { | |
c170ecf4 | 1885 | struct sn9c102_device *cam = video_drvdata(filp); |
1da177e4 LT |
1886 | struct sn9c102_frame_t* f, * i; |
1887 | unsigned long lock_flags; | |
2ffab02f | 1888 | long timeout; |
1da177e4 LT |
1889 | int err = 0; |
1890 | ||
4186ecf8 | 1891 | if (mutex_lock_interruptible(&cam->fileop_mutex)) |
1da177e4 LT |
1892 | return -ERESTARTSYS; |
1893 | ||
1894 | if (cam->state & DEV_DISCONNECTED) { | |
a966f3e7 | 1895 | DBG(1, "Device not present"); |
4186ecf8 | 1896 | mutex_unlock(&cam->fileop_mutex); |
1da177e4 LT |
1897 | return -ENODEV; |
1898 | } | |
1899 | ||
1900 | if (cam->state & DEV_MISCONFIGURED) { | |
a966f3e7 LR |
1901 | DBG(1, "The camera is misconfigured. Close and open it " |
1902 | "again."); | |
4186ecf8 | 1903 | mutex_unlock(&cam->fileop_mutex); |
1da177e4 LT |
1904 | return -EIO; |
1905 | } | |
1906 | ||
1907 | if (cam->io == IO_MMAP) { | |
1908 | DBG(3, "Close and open the device again to choose " | |
a966f3e7 | 1909 | "the read method"); |
4186ecf8 | 1910 | mutex_unlock(&cam->fileop_mutex); |
f423b9a8 | 1911 | return -EBUSY; |
1da177e4 LT |
1912 | } |
1913 | ||
1914 | if (cam->io == IO_NONE) { | |
1915 | if (!sn9c102_request_buffers(cam,cam->nreadbuffers, IO_READ)) { | |
a966f3e7 | 1916 | DBG(1, "read() failed, not enough memory"); |
4186ecf8 | 1917 | mutex_unlock(&cam->fileop_mutex); |
1da177e4 LT |
1918 | return -ENOMEM; |
1919 | } | |
1920 | cam->io = IO_READ; | |
1921 | cam->stream = STREAM_ON; | |
a966f3e7 LR |
1922 | } |
1923 | ||
1924 | if (list_empty(&cam->inqueue)) { | |
1925 | if (!list_empty(&cam->outqueue)) | |
1926 | sn9c102_empty_framequeues(cam); | |
1da177e4 LT |
1927 | sn9c102_queue_unusedframes(cam); |
1928 | } | |
1929 | ||
1930 | if (!count) { | |
4186ecf8 | 1931 | mutex_unlock(&cam->fileop_mutex); |
1da177e4 LT |
1932 | return 0; |
1933 | } | |
1934 | ||
1935 | if (list_empty(&cam->outqueue)) { | |
1936 | if (filp->f_flags & O_NONBLOCK) { | |
4186ecf8 | 1937 | mutex_unlock(&cam->fileop_mutex); |
1da177e4 LT |
1938 | return -EAGAIN; |
1939 | } | |
f327ebbd LR |
1940 | if (!cam->module_param.frame_timeout) { |
1941 | err = wait_event_interruptible | |
1942 | ( cam->wait_frame, | |
1943 | (!list_empty(&cam->outqueue)) || | |
1944 | (cam->state & DEV_DISCONNECTED) || | |
1945 | (cam->state & DEV_MISCONFIGURED) ); | |
1946 | if (err) { | |
1947 | mutex_unlock(&cam->fileop_mutex); | |
1948 | return err; | |
1949 | } | |
1950 | } else { | |
f423b9a8 LR |
1951 | timeout = wait_event_interruptible_timeout |
1952 | ( cam->wait_frame, | |
1953 | (!list_empty(&cam->outqueue)) || | |
1954 | (cam->state & DEV_DISCONNECTED) || | |
1955 | (cam->state & DEV_MISCONFIGURED), | |
607cfab6 AM |
1956 | msecs_to_jiffies( |
1957 | cam->module_param.frame_timeout * 1000 | |
1958 | ) | |
1959 | ); | |
f423b9a8 LR |
1960 | if (timeout < 0) { |
1961 | mutex_unlock(&cam->fileop_mutex); | |
1962 | return timeout; | |
f327ebbd LR |
1963 | } else if (timeout == 0 && |
1964 | !(cam->state & DEV_DISCONNECTED)) { | |
1965 | DBG(1, "Video frame timeout elapsed"); | |
1966 | mutex_unlock(&cam->fileop_mutex); | |
1967 | return -EIO; | |
1968 | } | |
1da177e4 LT |
1969 | } |
1970 | if (cam->state & DEV_DISCONNECTED) { | |
4186ecf8 | 1971 | mutex_unlock(&cam->fileop_mutex); |
1da177e4 LT |
1972 | return -ENODEV; |
1973 | } | |
f327ebbd | 1974 | if (cam->state & DEV_MISCONFIGURED) { |
4186ecf8 | 1975 | mutex_unlock(&cam->fileop_mutex); |
1da177e4 LT |
1976 | return -EIO; |
1977 | } | |
1978 | } | |
1979 | ||
1980 | f = list_entry(cam->outqueue.prev, struct sn9c102_frame_t, frame); | |
1981 | ||
a966f3e7 LR |
1982 | if (count > f->buf.bytesused) |
1983 | count = f->buf.bytesused; | |
1984 | ||
1985 | if (copy_to_user(buf, f->bufmem, count)) { | |
1986 | err = -EFAULT; | |
1987 | goto exit; | |
1988 | } | |
1989 | *f_pos += count; | |
1990 | ||
1991 | exit: | |
1da177e4 LT |
1992 | spin_lock_irqsave(&cam->queue_lock, lock_flags); |
1993 | list_for_each_entry(i, &cam->outqueue, frame) | |
1994 | i->state = F_UNUSED; | |
1995 | INIT_LIST_HEAD(&cam->outqueue); | |
1996 | spin_unlock_irqrestore(&cam->queue_lock, lock_flags); | |
1997 | ||
1998 | sn9c102_queue_unusedframes(cam); | |
1999 | ||
a966f3e7 LR |
2000 | PDBGG("Frame #%lu, bytes read: %zu", |
2001 | (unsigned long)f->buf.index, count); | |
1da177e4 | 2002 | |
4186ecf8 | 2003 | mutex_unlock(&cam->fileop_mutex); |
1da177e4 LT |
2004 | |
2005 | return count; | |
2006 | } | |
2007 | ||
2008 | ||
2009 | static unsigned int sn9c102_poll(struct file *filp, poll_table *wait) | |
2010 | { | |
c170ecf4 | 2011 | struct sn9c102_device *cam = video_drvdata(filp); |
a966f3e7 LR |
2012 | struct sn9c102_frame_t* f; |
2013 | unsigned long lock_flags; | |
1da177e4 LT |
2014 | unsigned int mask = 0; |
2015 | ||
4186ecf8 | 2016 | if (mutex_lock_interruptible(&cam->fileop_mutex)) |
1da177e4 LT |
2017 | return POLLERR; |
2018 | ||
2019 | if (cam->state & DEV_DISCONNECTED) { | |
a966f3e7 | 2020 | DBG(1, "Device not present"); |
1da177e4 LT |
2021 | goto error; |
2022 | } | |
2023 | ||
2024 | if (cam->state & DEV_MISCONFIGURED) { | |
a966f3e7 LR |
2025 | DBG(1, "The camera is misconfigured. Close and open it " |
2026 | "again."); | |
1da177e4 LT |
2027 | goto error; |
2028 | } | |
2029 | ||
2030 | if (cam->io == IO_NONE) { | |
2031 | if (!sn9c102_request_buffers(cam, cam->nreadbuffers, | |
d56410e0 | 2032 | IO_READ)) { |
a966f3e7 | 2033 | DBG(1, "poll() failed, not enough memory"); |
1da177e4 LT |
2034 | goto error; |
2035 | } | |
2036 | cam->io = IO_READ; | |
2037 | cam->stream = STREAM_ON; | |
2038 | } | |
2039 | ||
a966f3e7 LR |
2040 | if (cam->io == IO_READ) { |
2041 | spin_lock_irqsave(&cam->queue_lock, lock_flags); | |
2042 | list_for_each_entry(f, &cam->outqueue, frame) | |
2043 | f->state = F_UNUSED; | |
2044 | INIT_LIST_HEAD(&cam->outqueue); | |
2045 | spin_unlock_irqrestore(&cam->queue_lock, lock_flags); | |
1da177e4 | 2046 | sn9c102_queue_unusedframes(cam); |
a966f3e7 | 2047 | } |
1da177e4 LT |
2048 | |
2049 | poll_wait(filp, &cam->wait_frame, wait); | |
2050 | ||
2051 | if (!list_empty(&cam->outqueue)) | |
2052 | mask |= POLLIN | POLLRDNORM; | |
2053 | ||
4186ecf8 | 2054 | mutex_unlock(&cam->fileop_mutex); |
1da177e4 LT |
2055 | |
2056 | return mask; | |
2057 | ||
2058 | error: | |
4186ecf8 | 2059 | mutex_unlock(&cam->fileop_mutex); |
1da177e4 LT |
2060 | return POLLERR; |
2061 | } | |
2062 | ||
2063 | ||
2064 | static void sn9c102_vm_open(struct vm_area_struct* vma) | |
2065 | { | |
2066 | struct sn9c102_frame_t* f = vma->vm_private_data; | |
2067 | f->vma_use_count++; | |
2068 | } | |
2069 | ||
2070 | ||
2071 | static void sn9c102_vm_close(struct vm_area_struct* vma) | |
2072 | { | |
2073 | /* NOTE: buffers are not freed here */ | |
2074 | struct sn9c102_frame_t* f = vma->vm_private_data; | |
2075 | f->vma_use_count--; | |
2076 | } | |
2077 | ||
2078 | ||
f0f37e2f | 2079 | static const struct vm_operations_struct sn9c102_vm_ops = { |
1da177e4 LT |
2080 | .open = sn9c102_vm_open, |
2081 | .close = sn9c102_vm_close, | |
2082 | }; | |
2083 | ||
2084 | ||
2085 | static int sn9c102_mmap(struct file* filp, struct vm_area_struct *vma) | |
2086 | { | |
c170ecf4 | 2087 | struct sn9c102_device *cam = video_drvdata(filp); |
1da177e4 | 2088 | unsigned long size = vma->vm_end - vma->vm_start, |
d56410e0 | 2089 | start = vma->vm_start; |
cd6fcc55 | 2090 | void *pos; |
1da177e4 LT |
2091 | u32 i; |
2092 | ||
4186ecf8 | 2093 | if (mutex_lock_interruptible(&cam->fileop_mutex)) |
1da177e4 LT |
2094 | return -ERESTARTSYS; |
2095 | ||
2096 | if (cam->state & DEV_DISCONNECTED) { | |
a966f3e7 | 2097 | DBG(1, "Device not present"); |
4186ecf8 | 2098 | mutex_unlock(&cam->fileop_mutex); |
1da177e4 LT |
2099 | return -ENODEV; |
2100 | } | |
2101 | ||
2102 | if (cam->state & DEV_MISCONFIGURED) { | |
a966f3e7 LR |
2103 | DBG(1, "The camera is misconfigured. Close and open it " |
2104 | "again."); | |
4186ecf8 | 2105 | mutex_unlock(&cam->fileop_mutex); |
1da177e4 LT |
2106 | return -EIO; |
2107 | } | |
2108 | ||
f423b9a8 LR |
2109 | if (!(vma->vm_flags & (VM_WRITE | VM_READ))) { |
2110 | mutex_unlock(&cam->fileop_mutex); | |
2111 | return -EACCES; | |
2112 | } | |
2113 | ||
2114 | if (cam->io != IO_MMAP || | |
1da177e4 | 2115 | size != PAGE_ALIGN(cam->frame[0].buf.length)) { |
4186ecf8 | 2116 | mutex_unlock(&cam->fileop_mutex); |
1da177e4 LT |
2117 | return -EINVAL; |
2118 | } | |
2119 | ||
2120 | for (i = 0; i < cam->nbuffers; i++) { | |
2121 | if ((cam->frame[i].buf.m.offset>>PAGE_SHIFT) == vma->vm_pgoff) | |
2122 | break; | |
2123 | } | |
2124 | if (i == cam->nbuffers) { | |
4186ecf8 | 2125 | mutex_unlock(&cam->fileop_mutex); |
1da177e4 LT |
2126 | return -EINVAL; |
2127 | } | |
2128 | ||
1da177e4 | 2129 | vma->vm_flags |= VM_IO; |
cd6fcc55 | 2130 | vma->vm_flags |= VM_RESERVED; |
1da177e4 | 2131 | |
cd6fcc55 | 2132 | pos = cam->frame[i].bufmem; |
1da177e4 | 2133 | while (size > 0) { /* size is page-aligned */ |
cd6fcc55 | 2134 | if (vm_insert_page(vma, start, vmalloc_to_page(pos))) { |
4186ecf8 | 2135 | mutex_unlock(&cam->fileop_mutex); |
1da177e4 LT |
2136 | return -EAGAIN; |
2137 | } | |
2138 | start += PAGE_SIZE; | |
2139 | pos += PAGE_SIZE; | |
2140 | size -= PAGE_SIZE; | |
2141 | } | |
2142 | ||
2143 | vma->vm_ops = &sn9c102_vm_ops; | |
2144 | vma->vm_private_data = &cam->frame[i]; | |
1da177e4 LT |
2145 | sn9c102_vm_open(vma); |
2146 | ||
4186ecf8 | 2147 | mutex_unlock(&cam->fileop_mutex); |
1da177e4 LT |
2148 | |
2149 | return 0; | |
2150 | } | |
2151 | ||
a966f3e7 | 2152 | /*****************************************************************************/ |
1da177e4 | 2153 | |
a966f3e7 LR |
2154 | static int |
2155 | sn9c102_vidioc_querycap(struct sn9c102_device* cam, void __user * arg) | |
1da177e4 | 2156 | { |
a966f3e7 LR |
2157 | struct v4l2_capability cap = { |
2158 | .driver = "sn9c102", | |
6c13b45e | 2159 | .version = LINUX_VERSION_CODE, |
a966f3e7 | 2160 | .capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_READWRITE | |
d56410e0 | 2161 | V4L2_CAP_STREAMING, |
a966f3e7 LR |
2162 | }; |
2163 | ||
2164 | strlcpy(cap.card, cam->v4ldev->name, sizeof(cap.card)); | |
2165 | if (usb_make_path(cam->usbdev, cap.bus_info, sizeof(cap.bus_info)) < 0) | |
af128a10 | 2166 | strlcpy(cap.bus_info, dev_name(&cam->usbdev->dev), |
d56410e0 | 2167 | sizeof(cap.bus_info)); |
a966f3e7 LR |
2168 | |
2169 | if (copy_to_user(arg, &cap, sizeof(cap))) | |
2170 | return -EFAULT; | |
1da177e4 | 2171 | |
a966f3e7 LR |
2172 | return 0; |
2173 | } | |
1da177e4 | 2174 | |
1da177e4 | 2175 | |
a966f3e7 LR |
2176 | static int |
2177 | sn9c102_vidioc_enuminput(struct sn9c102_device* cam, void __user * arg) | |
2178 | { | |
2179 | struct v4l2_input i; | |
1da177e4 | 2180 | |
a966f3e7 LR |
2181 | if (copy_from_user(&i, arg, sizeof(i))) |
2182 | return -EFAULT; | |
1da177e4 | 2183 | |
a966f3e7 LR |
2184 | if (i.index) |
2185 | return -EINVAL; | |
1da177e4 | 2186 | |
a966f3e7 | 2187 | memset(&i, 0, sizeof(i)); |
cd6fcc55 | 2188 | strcpy(i.name, "Camera"); |
2ffab02f | 2189 | i.type = V4L2_INPUT_TYPE_CAMERA; |
657f2271 | 2190 | i.capabilities = V4L2_IN_CAP_STD; |
1da177e4 | 2191 | |
a966f3e7 LR |
2192 | if (copy_to_user(arg, &i, sizeof(i))) |
2193 | return -EFAULT; | |
1da177e4 | 2194 | |
a966f3e7 LR |
2195 | return 0; |
2196 | } | |
1da177e4 | 2197 | |
1da177e4 | 2198 | |
a966f3e7 | 2199 | static int |
2ffab02f LR |
2200 | sn9c102_vidioc_g_input(struct sn9c102_device* cam, void __user * arg) |
2201 | { | |
2202 | int index = 0; | |
2203 | ||
2204 | if (copy_to_user(arg, &index, sizeof(index))) | |
2205 | return -EFAULT; | |
2206 | ||
2207 | return 0; | |
2208 | } | |
2209 | ||
2210 | ||
2211 | static int | |
2212 | sn9c102_vidioc_s_input(struct sn9c102_device* cam, void __user * arg) | |
a966f3e7 LR |
2213 | { |
2214 | int index; | |
1da177e4 | 2215 | |
a966f3e7 LR |
2216 | if (copy_from_user(&index, arg, sizeof(index))) |
2217 | return -EFAULT; | |
1da177e4 | 2218 | |
a966f3e7 | 2219 | if (index != 0) |
1da177e4 | 2220 | return -EINVAL; |
1da177e4 | 2221 | |
a966f3e7 LR |
2222 | return 0; |
2223 | } | |
1da177e4 | 2224 | |
1da177e4 | 2225 | |
a966f3e7 LR |
2226 | static int |
2227 | sn9c102_vidioc_query_ctrl(struct sn9c102_device* cam, void __user * arg) | |
2228 | { | |
2ffab02f | 2229 | struct sn9c102_sensor* s = &cam->sensor; |
a966f3e7 LR |
2230 | struct v4l2_queryctrl qc; |
2231 | u8 i; | |
1da177e4 | 2232 | |
a966f3e7 LR |
2233 | if (copy_from_user(&qc, arg, sizeof(qc))) |
2234 | return -EFAULT; | |
1da177e4 | 2235 | |
a966f3e7 LR |
2236 | for (i = 0; i < ARRAY_SIZE(s->qctrl); i++) |
2237 | if (qc.id && qc.id == s->qctrl[i].id) { | |
2238 | memcpy(&qc, &(s->qctrl[i]), sizeof(qc)); | |
2239 | if (copy_to_user(arg, &qc, sizeof(qc))) | |
2240 | return -EFAULT; | |
2241 | return 0; | |
2242 | } | |
1da177e4 | 2243 | |
a966f3e7 LR |
2244 | return -EINVAL; |
2245 | } | |
1da177e4 | 2246 | |
1da177e4 | 2247 | |
a966f3e7 LR |
2248 | static int |
2249 | sn9c102_vidioc_g_ctrl(struct sn9c102_device* cam, void __user * arg) | |
2250 | { | |
2ffab02f | 2251 | struct sn9c102_sensor* s = &cam->sensor; |
a966f3e7 LR |
2252 | struct v4l2_control ctrl; |
2253 | int err = 0; | |
2254 | u8 i; | |
1da177e4 | 2255 | |
a966f3e7 LR |
2256 | if (!s->get_ctrl && !s->set_ctrl) |
2257 | return -EINVAL; | |
1da177e4 | 2258 | |
a966f3e7 LR |
2259 | if (copy_from_user(&ctrl, arg, sizeof(ctrl))) |
2260 | return -EFAULT; | |
2261 | ||
2262 | if (!s->get_ctrl) { | |
52950ed4 | 2263 | for (i = 0; i < ARRAY_SIZE(s->qctrl); i++) |
a966f3e7 LR |
2264 | if (ctrl.id && ctrl.id == s->qctrl[i].id) { |
2265 | ctrl.value = s->_qctrl[i].default_value; | |
2266 | goto exit; | |
1da177e4 | 2267 | } |
a966f3e7 LR |
2268 | return -EINVAL; |
2269 | } else | |
2270 | err = s->get_ctrl(cam, &ctrl); | |
1da177e4 | 2271 | |
a966f3e7 LR |
2272 | exit: |
2273 | if (copy_to_user(arg, &ctrl, sizeof(ctrl))) | |
2274 | return -EFAULT; | |
1da177e4 | 2275 | |
f327ebbd LR |
2276 | PDBGG("VIDIOC_G_CTRL: id %lu, value %lu", |
2277 | (unsigned long)ctrl.id, (unsigned long)ctrl.value); | |
2278 | ||
a966f3e7 LR |
2279 | return err; |
2280 | } | |
1da177e4 | 2281 | |
1da177e4 | 2282 | |
a966f3e7 LR |
2283 | static int |
2284 | sn9c102_vidioc_s_ctrl(struct sn9c102_device* cam, void __user * arg) | |
2285 | { | |
2ffab02f | 2286 | struct sn9c102_sensor* s = &cam->sensor; |
a966f3e7 LR |
2287 | struct v4l2_control ctrl; |
2288 | u8 i; | |
2289 | int err = 0; | |
1da177e4 | 2290 | |
a966f3e7 LR |
2291 | if (!s->set_ctrl) |
2292 | return -EINVAL; | |
1da177e4 | 2293 | |
a966f3e7 LR |
2294 | if (copy_from_user(&ctrl, arg, sizeof(ctrl))) |
2295 | return -EFAULT; | |
1da177e4 | 2296 | |
124371e3 | 2297 | for (i = 0; i < ARRAY_SIZE(s->qctrl); i++) { |
a966f3e7 | 2298 | if (ctrl.id == s->qctrl[i].id) { |
2ffab02f LR |
2299 | if (s->qctrl[i].flags & V4L2_CTRL_FLAG_DISABLED) |
2300 | return -EINVAL; | |
a966f3e7 LR |
2301 | if (ctrl.value < s->qctrl[i].minimum || |
2302 | ctrl.value > s->qctrl[i].maximum) | |
2303 | return -ERANGE; | |
2304 | ctrl.value -= ctrl.value % s->qctrl[i].step; | |
2305 | break; | |
2306 | } | |
124371e3 DC |
2307 | } |
2308 | if (i == ARRAY_SIZE(s->qctrl)) | |
2309 | return -EINVAL; | |
a966f3e7 LR |
2310 | if ((err = s->set_ctrl(cam, &ctrl))) |
2311 | return err; | |
1da177e4 | 2312 | |
a966f3e7 | 2313 | s->_qctrl[i].default_value = ctrl.value; |
1da177e4 | 2314 | |
a966f3e7 LR |
2315 | PDBGG("VIDIOC_S_CTRL: id %lu, value %lu", |
2316 | (unsigned long)ctrl.id, (unsigned long)ctrl.value); | |
1da177e4 | 2317 | |
a966f3e7 LR |
2318 | return 0; |
2319 | } | |
1da177e4 | 2320 | |
1da177e4 | 2321 | |
a966f3e7 LR |
2322 | static int |
2323 | sn9c102_vidioc_cropcap(struct sn9c102_device* cam, void __user * arg) | |
2324 | { | |
2ffab02f | 2325 | struct v4l2_cropcap* cc = &(cam->sensor.cropcap); |
1da177e4 | 2326 | |
a966f3e7 LR |
2327 | cc->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
2328 | cc->pixelaspect.numerator = 1; | |
2329 | cc->pixelaspect.denominator = 1; | |
1da177e4 | 2330 | |
a966f3e7 LR |
2331 | if (copy_to_user(arg, cc, sizeof(*cc))) |
2332 | return -EFAULT; | |
1da177e4 | 2333 | |
a966f3e7 LR |
2334 | return 0; |
2335 | } | |
1da177e4 | 2336 | |
1da177e4 | 2337 | |
a966f3e7 LR |
2338 | static int |
2339 | sn9c102_vidioc_g_crop(struct sn9c102_device* cam, void __user * arg) | |
2340 | { | |
2ffab02f | 2341 | struct sn9c102_sensor* s = &cam->sensor; |
a966f3e7 LR |
2342 | struct v4l2_crop crop = { |
2343 | .type = V4L2_BUF_TYPE_VIDEO_CAPTURE, | |
2344 | }; | |
1da177e4 | 2345 | |
a966f3e7 | 2346 | memcpy(&(crop.c), &(s->_rect), sizeof(struct v4l2_rect)); |
1da177e4 | 2347 | |
a966f3e7 LR |
2348 | if (copy_to_user(arg, &crop, sizeof(crop))) |
2349 | return -EFAULT; | |
1da177e4 | 2350 | |
a966f3e7 LR |
2351 | return 0; |
2352 | } | |
1da177e4 | 2353 | |
1da177e4 | 2354 | |
a966f3e7 LR |
2355 | static int |
2356 | sn9c102_vidioc_s_crop(struct sn9c102_device* cam, void __user * arg) | |
2357 | { | |
2ffab02f | 2358 | struct sn9c102_sensor* s = &cam->sensor; |
a966f3e7 LR |
2359 | struct v4l2_crop crop; |
2360 | struct v4l2_rect* rect; | |
2361 | struct v4l2_rect* bounds = &(s->cropcap.bounds); | |
2362 | struct v4l2_pix_format* pix_format = &(s->pix_format); | |
2363 | u8 scale; | |
2364 | const enum sn9c102_stream_state stream = cam->stream; | |
2365 | const u32 nbuffers = cam->nbuffers; | |
2366 | u32 i; | |
2367 | int err = 0; | |
1da177e4 | 2368 | |
a966f3e7 LR |
2369 | if (copy_from_user(&crop, arg, sizeof(crop))) |
2370 | return -EFAULT; | |
1da177e4 | 2371 | |
a966f3e7 | 2372 | rect = &(crop.c); |
1da177e4 | 2373 | |
a966f3e7 LR |
2374 | if (crop.type != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
2375 | return -EINVAL; | |
1da177e4 | 2376 | |
a966f3e7 LR |
2377 | if (cam->module_param.force_munmap) |
2378 | for (i = 0; i < cam->nbuffers; i++) | |
2379 | if (cam->frame[i].vma_use_count) { | |
2380 | DBG(3, "VIDIOC_S_CROP failed. " | |
2381 | "Unmap the buffers first."); | |
f423b9a8 | 2382 | return -EBUSY; |
a966f3e7 | 2383 | } |
1da177e4 | 2384 | |
a966f3e7 LR |
2385 | /* Preserve R,G or B origin */ |
2386 | rect->left = (s->_rect.left & 1L) ? rect->left | 1L : rect->left & ~1L; | |
2387 | rect->top = (s->_rect.top & 1L) ? rect->top | 1L : rect->top & ~1L; | |
2388 | ||
2389 | if (rect->width < 16) | |
2390 | rect->width = 16; | |
2391 | if (rect->height < 16) | |
2392 | rect->height = 16; | |
2393 | if (rect->width > bounds->width) | |
2394 | rect->width = bounds->width; | |
2395 | if (rect->height > bounds->height) | |
2396 | rect->height = bounds->height; | |
2397 | if (rect->left < bounds->left) | |
2398 | rect->left = bounds->left; | |
2399 | if (rect->top < bounds->top) | |
2400 | rect->top = bounds->top; | |
2401 | if (rect->left + rect->width > bounds->left + bounds->width) | |
2402 | rect->left = bounds->left+bounds->width - rect->width; | |
2403 | if (rect->top + rect->height > bounds->top + bounds->height) | |
2404 | rect->top = bounds->top+bounds->height - rect->height; | |
2405 | ||
2406 | rect->width &= ~15L; | |
2407 | rect->height &= ~15L; | |
2408 | ||
2409 | if (SN9C102_PRESERVE_IMGSCALE) { | |
2410 | /* Calculate the actual scaling factor */ | |
2411 | u32 a, b; | |
2412 | a = rect->width * rect->height; | |
2413 | b = pix_format->width * pix_format->height; | |
2414 | scale = b ? (u8)((a / b) < 4 ? 1 : ((a / b) < 16 ? 2 : 4)) : 1; | |
2415 | } else | |
2416 | scale = 1; | |
2417 | ||
2418 | if (cam->stream == STREAM_ON) | |
2419 | if ((err = sn9c102_stream_interrupt(cam))) | |
2420 | return err; | |
1da177e4 | 2421 | |
a966f3e7 LR |
2422 | if (copy_to_user(arg, &crop, sizeof(crop))) { |
2423 | cam->stream = stream; | |
2424 | return -EFAULT; | |
1da177e4 LT |
2425 | } |
2426 | ||
a966f3e7 LR |
2427 | if (cam->module_param.force_munmap || cam->io == IO_READ) |
2428 | sn9c102_release_buffers(cam); | |
1da177e4 | 2429 | |
a966f3e7 LR |
2430 | err = sn9c102_set_crop(cam, rect); |
2431 | if (s->set_crop) | |
2432 | err += s->set_crop(cam, rect); | |
2433 | err += sn9c102_set_scale(cam, scale); | |
1da177e4 | 2434 | |
a966f3e7 LR |
2435 | if (err) { /* atomic, no rollback in ioctl() */ |
2436 | cam->state |= DEV_MISCONFIGURED; | |
2437 | DBG(1, "VIDIOC_S_CROP failed because of hardware problems. To " | |
38c7c036 LP |
2438 | "use the camera, close and open %s again.", |
2439 | video_device_node_name(cam->v4ldev)); | |
a966f3e7 LR |
2440 | return -EIO; |
2441 | } | |
1da177e4 | 2442 | |
a966f3e7 LR |
2443 | s->pix_format.width = rect->width/scale; |
2444 | s->pix_format.height = rect->height/scale; | |
2445 | memcpy(&(s->_rect), rect, sizeof(*rect)); | |
1da177e4 | 2446 | |
a966f3e7 LR |
2447 | if ((cam->module_param.force_munmap || cam->io == IO_READ) && |
2448 | nbuffers != sn9c102_request_buffers(cam, nbuffers, cam->io)) { | |
2449 | cam->state |= DEV_MISCONFIGURED; | |
2450 | DBG(1, "VIDIOC_S_CROP failed because of not enough memory. To " | |
38c7c036 LP |
2451 | "use the camera, close and open %s again.", |
2452 | video_device_node_name(cam->v4ldev)); | |
a966f3e7 | 2453 | return -ENOMEM; |
1da177e4 LT |
2454 | } |
2455 | ||
a966f3e7 LR |
2456 | if (cam->io == IO_READ) |
2457 | sn9c102_empty_framequeues(cam); | |
2458 | else if (cam->module_param.force_munmap) | |
2459 | sn9c102_requeue_outqueue(cam); | |
1da177e4 | 2460 | |
a966f3e7 | 2461 | cam->stream = stream; |
1da177e4 | 2462 | |
a966f3e7 LR |
2463 | return 0; |
2464 | } | |
1da177e4 | 2465 | |
1da177e4 | 2466 | |
f327ebbd LR |
2467 | static int |
2468 | sn9c102_vidioc_enum_framesizes(struct sn9c102_device* cam, void __user * arg) | |
2469 | { | |
2470 | struct v4l2_frmsizeenum frmsize; | |
2471 | ||
2472 | if (copy_from_user(&frmsize, arg, sizeof(frmsize))) | |
2473 | return -EFAULT; | |
2474 | ||
2475 | if (frmsize.index != 0) | |
2476 | return -EINVAL; | |
2477 | ||
2478 | switch (cam->bridge) { | |
2479 | case BRIDGE_SN9C101: | |
2480 | case BRIDGE_SN9C102: | |
2481 | case BRIDGE_SN9C103: | |
2482 | if (frmsize.pixel_format != V4L2_PIX_FMT_SN9C10X && | |
2483 | frmsize.pixel_format != V4L2_PIX_FMT_SBGGR8) | |
2484 | return -EINVAL; | |
2485 | case BRIDGE_SN9C105: | |
2486 | case BRIDGE_SN9C120: | |
2487 | if (frmsize.pixel_format != V4L2_PIX_FMT_JPEG && | |
2488 | frmsize.pixel_format != V4L2_PIX_FMT_SBGGR8) | |
2489 | return -EINVAL; | |
2490 | } | |
2491 | ||
2492 | frmsize.type = V4L2_FRMSIZE_TYPE_STEPWISE; | |
2493 | frmsize.stepwise.min_width = frmsize.stepwise.step_width = 16; | |
2494 | frmsize.stepwise.min_height = frmsize.stepwise.step_height = 16; | |
2495 | frmsize.stepwise.max_width = cam->sensor.cropcap.bounds.width; | |
2496 | frmsize.stepwise.max_height = cam->sensor.cropcap.bounds.height; | |
2497 | memset(&frmsize.reserved, 0, sizeof(frmsize.reserved)); | |
2498 | ||
2499 | if (copy_to_user(arg, &frmsize, sizeof(frmsize))) | |
2500 | return -EFAULT; | |
2501 | ||
2502 | return 0; | |
2503 | } | |
2504 | ||
2505 | ||
a966f3e7 LR |
2506 | static int |
2507 | sn9c102_vidioc_enum_fmt(struct sn9c102_device* cam, void __user * arg) | |
2508 | { | |
2509 | struct v4l2_fmtdesc fmtd; | |
1da177e4 | 2510 | |
a966f3e7 LR |
2511 | if (copy_from_user(&fmtd, arg, sizeof(fmtd))) |
2512 | return -EFAULT; | |
1da177e4 | 2513 | |
f327ebbd LR |
2514 | if (fmtd.type != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
2515 | return -EINVAL; | |
2516 | ||
a966f3e7 LR |
2517 | if (fmtd.index == 0) { |
2518 | strcpy(fmtd.description, "bayer rgb"); | |
2519 | fmtd.pixelformat = V4L2_PIX_FMT_SBGGR8; | |
2520 | } else if (fmtd.index == 1) { | |
f327ebbd LR |
2521 | switch (cam->bridge) { |
2522 | case BRIDGE_SN9C101: | |
2523 | case BRIDGE_SN9C102: | |
2524 | case BRIDGE_SN9C103: | |
f423b9a8 LR |
2525 | strcpy(fmtd.description, "compressed"); |
2526 | fmtd.pixelformat = V4L2_PIX_FMT_SN9C10X; | |
f327ebbd LR |
2527 | break; |
2528 | case BRIDGE_SN9C105: | |
2529 | case BRIDGE_SN9C120: | |
2530 | strcpy(fmtd.description, "JPEG"); | |
2531 | fmtd.pixelformat = V4L2_PIX_FMT_JPEG; | |
2532 | break; | |
2533 | } | |
a966f3e7 LR |
2534 | fmtd.flags = V4L2_FMT_FLAG_COMPRESSED; |
2535 | } else | |
2536 | return -EINVAL; | |
1da177e4 | 2537 | |
a966f3e7 LR |
2538 | fmtd.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
2539 | memset(&fmtd.reserved, 0, sizeof(fmtd.reserved)); | |
1da177e4 | 2540 | |
a966f3e7 LR |
2541 | if (copy_to_user(arg, &fmtd, sizeof(fmtd))) |
2542 | return -EFAULT; | |
1da177e4 | 2543 | |
a966f3e7 LR |
2544 | return 0; |
2545 | } | |
1da177e4 | 2546 | |
1da177e4 | 2547 | |
a966f3e7 LR |
2548 | static int |
2549 | sn9c102_vidioc_g_fmt(struct sn9c102_device* cam, void __user * arg) | |
2550 | { | |
2551 | struct v4l2_format format; | |
2ffab02f | 2552 | struct v4l2_pix_format* pfmt = &(cam->sensor.pix_format); |
1da177e4 | 2553 | |
a966f3e7 LR |
2554 | if (copy_from_user(&format, arg, sizeof(format))) |
2555 | return -EFAULT; | |
1da177e4 | 2556 | |
a966f3e7 LR |
2557 | if (format.type != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
2558 | return -EINVAL; | |
1da177e4 | 2559 | |
f423b9a8 LR |
2560 | pfmt->colorspace = (pfmt->pixelformat == V4L2_PIX_FMT_JPEG) ? |
2561 | V4L2_COLORSPACE_JPEG : V4L2_COLORSPACE_SRGB; | |
2562 | pfmt->bytesperline = (pfmt->pixelformat == V4L2_PIX_FMT_SN9C10X || | |
2563 | pfmt->pixelformat == V4L2_PIX_FMT_JPEG) | |
d56410e0 | 2564 | ? 0 : (pfmt->width * pfmt->priv) / 8; |
a966f3e7 LR |
2565 | pfmt->sizeimage = pfmt->height * ((pfmt->width*pfmt->priv)/8); |
2566 | pfmt->field = V4L2_FIELD_NONE; | |
2567 | memcpy(&(format.fmt.pix), pfmt, sizeof(*pfmt)); | |
1da177e4 | 2568 | |
a966f3e7 LR |
2569 | if (copy_to_user(arg, &format, sizeof(format))) |
2570 | return -EFAULT; | |
1da177e4 | 2571 | |
a966f3e7 LR |
2572 | return 0; |
2573 | } | |
1da177e4 | 2574 | |
1da177e4 | 2575 | |
a966f3e7 LR |
2576 | static int |
2577 | sn9c102_vidioc_try_s_fmt(struct sn9c102_device* cam, unsigned int cmd, | |
d56410e0 | 2578 | void __user * arg) |
a966f3e7 | 2579 | { |
2ffab02f | 2580 | struct sn9c102_sensor* s = &cam->sensor; |
a966f3e7 LR |
2581 | struct v4l2_format format; |
2582 | struct v4l2_pix_format* pix; | |
2583 | struct v4l2_pix_format* pfmt = &(s->pix_format); | |
2584 | struct v4l2_rect* bounds = &(s->cropcap.bounds); | |
2585 | struct v4l2_rect rect; | |
2586 | u8 scale; | |
2587 | const enum sn9c102_stream_state stream = cam->stream; | |
2588 | const u32 nbuffers = cam->nbuffers; | |
2589 | u32 i; | |
2590 | int err = 0; | |
1da177e4 | 2591 | |
a966f3e7 LR |
2592 | if (copy_from_user(&format, arg, sizeof(format))) |
2593 | return -EFAULT; | |
1da177e4 | 2594 | |
a966f3e7 | 2595 | pix = &(format.fmt.pix); |
1da177e4 | 2596 | |
a966f3e7 LR |
2597 | if (format.type != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
2598 | return -EINVAL; | |
1da177e4 | 2599 | |
a966f3e7 | 2600 | memcpy(&rect, &(s->_rect), sizeof(rect)); |
1da177e4 | 2601 | |
a966f3e7 LR |
2602 | { /* calculate the actual scaling factor */ |
2603 | u32 a, b; | |
2604 | a = rect.width * rect.height; | |
2605 | b = pix->width * pix->height; | |
2606 | scale = b ? (u8)((a / b) < 4 ? 1 : ((a / b) < 16 ? 2 : 4)) : 1; | |
1da177e4 LT |
2607 | } |
2608 | ||
a966f3e7 LR |
2609 | rect.width = scale * pix->width; |
2610 | rect.height = scale * pix->height; | |
1da177e4 | 2611 | |
a966f3e7 LR |
2612 | if (rect.width < 16) |
2613 | rect.width = 16; | |
2614 | if (rect.height < 16) | |
2615 | rect.height = 16; | |
2616 | if (rect.width > bounds->left + bounds->width - rect.left) | |
2617 | rect.width = bounds->left + bounds->width - rect.left; | |
2618 | if (rect.height > bounds->top + bounds->height - rect.top) | |
2619 | rect.height = bounds->top + bounds->height - rect.top; | |
1da177e4 | 2620 | |
a966f3e7 LR |
2621 | rect.width &= ~15L; |
2622 | rect.height &= ~15L; | |
1da177e4 | 2623 | |
a966f3e7 LR |
2624 | { /* adjust the scaling factor */ |
2625 | u32 a, b; | |
2626 | a = rect.width * rect.height; | |
2627 | b = pix->width * pix->height; | |
2628 | scale = b ? (u8)((a / b) < 4 ? 1 : ((a / b) < 16 ? 2 : 4)) : 1; | |
2629 | } | |
2630 | ||
2631 | pix->width = rect.width / scale; | |
2632 | pix->height = rect.height / scale; | |
2633 | ||
f327ebbd LR |
2634 | switch (cam->bridge) { |
2635 | case BRIDGE_SN9C101: | |
2636 | case BRIDGE_SN9C102: | |
2637 | case BRIDGE_SN9C103: | |
f423b9a8 LR |
2638 | if (pix->pixelformat != V4L2_PIX_FMT_SN9C10X && |
2639 | pix->pixelformat != V4L2_PIX_FMT_SBGGR8) | |
2640 | pix->pixelformat = pfmt->pixelformat; | |
f327ebbd LR |
2641 | break; |
2642 | case BRIDGE_SN9C105: | |
2643 | case BRIDGE_SN9C120: | |
2644 | if (pix->pixelformat != V4L2_PIX_FMT_JPEG && | |
2645 | pix->pixelformat != V4L2_PIX_FMT_SBGGR8) | |
2646 | pix->pixelformat = pfmt->pixelformat; | |
2647 | break; | |
2648 | } | |
a966f3e7 | 2649 | pix->priv = pfmt->priv; /* bpp */ |
f423b9a8 LR |
2650 | pix->colorspace = (pix->pixelformat == V4L2_PIX_FMT_JPEG) ? |
2651 | V4L2_COLORSPACE_JPEG : V4L2_COLORSPACE_SRGB; | |
f327ebbd LR |
2652 | pix->bytesperline = (pix->pixelformat == V4L2_PIX_FMT_SN9C10X || |
2653 | pix->pixelformat == V4L2_PIX_FMT_JPEG) | |
d56410e0 | 2654 | ? 0 : (pix->width * pix->priv) / 8; |
a966f3e7 LR |
2655 | pix->sizeimage = pix->height * ((pix->width * pix->priv) / 8); |
2656 | pix->field = V4L2_FIELD_NONE; | |
2657 | ||
2658 | if (cmd == VIDIOC_TRY_FMT) { | |
2659 | if (copy_to_user(arg, &format, sizeof(format))) | |
2660 | return -EFAULT; | |
2661 | return 0; | |
2662 | } | |
1da177e4 | 2663 | |
a966f3e7 | 2664 | if (cam->module_param.force_munmap) |
1da177e4 LT |
2665 | for (i = 0; i < cam->nbuffers; i++) |
2666 | if (cam->frame[i].vma_use_count) { | |
a966f3e7 LR |
2667 | DBG(3, "VIDIOC_S_FMT failed. Unmap the " |
2668 | "buffers first."); | |
f423b9a8 | 2669 | return -EBUSY; |
1da177e4 LT |
2670 | } |
2671 | ||
a966f3e7 LR |
2672 | if (cam->stream == STREAM_ON) |
2673 | if ((err = sn9c102_stream_interrupt(cam))) | |
2674 | return err; | |
1da177e4 | 2675 | |
a966f3e7 LR |
2676 | if (copy_to_user(arg, &format, sizeof(format))) { |
2677 | cam->stream = stream; | |
2678 | return -EFAULT; | |
2679 | } | |
1da177e4 | 2680 | |
a966f3e7 | 2681 | if (cam->module_param.force_munmap || cam->io == IO_READ) |
1da177e4 | 2682 | sn9c102_release_buffers(cam); |
1da177e4 | 2683 | |
a966f3e7 LR |
2684 | err += sn9c102_set_pix_format(cam, pix); |
2685 | err += sn9c102_set_crop(cam, &rect); | |
2686 | if (s->set_pix_format) | |
2687 | err += s->set_pix_format(cam, pix); | |
2688 | if (s->set_crop) | |
2689 | err += s->set_crop(cam, &rect); | |
2690 | err += sn9c102_set_scale(cam, scale); | |
1da177e4 | 2691 | |
a966f3e7 LR |
2692 | if (err) { /* atomic, no rollback in ioctl() */ |
2693 | cam->state |= DEV_MISCONFIGURED; | |
2694 | DBG(1, "VIDIOC_S_FMT failed because of hardware problems. To " | |
38c7c036 LP |
2695 | "use the camera, close and open %s again.", |
2696 | video_device_node_name(cam->v4ldev)); | |
a966f3e7 LR |
2697 | return -EIO; |
2698 | } | |
1da177e4 | 2699 | |
a966f3e7 LR |
2700 | memcpy(pfmt, pix, sizeof(*pix)); |
2701 | memcpy(&(s->_rect), &rect, sizeof(rect)); | |
2702 | ||
2703 | if ((cam->module_param.force_munmap || cam->io == IO_READ) && | |
2704 | nbuffers != sn9c102_request_buffers(cam, nbuffers, cam->io)) { | |
2705 | cam->state |= DEV_MISCONFIGURED; | |
2706 | DBG(1, "VIDIOC_S_FMT failed because of not enough memory. To " | |
38c7c036 LP |
2707 | "use the camera, close and open %s again.", |
2708 | video_device_node_name(cam->v4ldev)); | |
a966f3e7 | 2709 | return -ENOMEM; |
1da177e4 LT |
2710 | } |
2711 | ||
a966f3e7 LR |
2712 | if (cam->io == IO_READ) |
2713 | sn9c102_empty_framequeues(cam); | |
2714 | else if (cam->module_param.force_munmap) | |
2715 | sn9c102_requeue_outqueue(cam); | |
1da177e4 | 2716 | |
a966f3e7 | 2717 | cam->stream = stream; |
1da177e4 | 2718 | |
a966f3e7 LR |
2719 | return 0; |
2720 | } | |
2721 | ||
2722 | ||
2723 | static int | |
2724 | sn9c102_vidioc_g_jpegcomp(struct sn9c102_device* cam, void __user * arg) | |
2725 | { | |
f327ebbd | 2726 | if (copy_to_user(arg, &cam->compression, sizeof(cam->compression))) |
a966f3e7 | 2727 | return -EFAULT; |
1da177e4 | 2728 | |
a966f3e7 LR |
2729 | return 0; |
2730 | } | |
1da177e4 | 2731 | |
1da177e4 | 2732 | |
a966f3e7 LR |
2733 | static int |
2734 | sn9c102_vidioc_s_jpegcomp(struct sn9c102_device* cam, void __user * arg) | |
2735 | { | |
2736 | struct v4l2_jpegcompression jc; | |
2737 | const enum sn9c102_stream_state stream = cam->stream; | |
2738 | int err = 0; | |
1da177e4 | 2739 | |
a966f3e7 LR |
2740 | if (copy_from_user(&jc, arg, sizeof(jc))) |
2741 | return -EFAULT; | |
1da177e4 | 2742 | |
a966f3e7 LR |
2743 | if (jc.quality != 0 && jc.quality != 1) |
2744 | return -EINVAL; | |
2745 | ||
2746 | if (cam->stream == STREAM_ON) | |
2747 | if ((err = sn9c102_stream_interrupt(cam))) | |
2748 | return err; | |
2749 | ||
2750 | err += sn9c102_set_compression(cam, &jc); | |
2751 | if (err) { /* atomic, no rollback in ioctl() */ | |
2752 | cam->state |= DEV_MISCONFIGURED; | |
38c7c036 LP |
2753 | DBG(1, "VIDIOC_S_JPEGCOMP failed because of hardware problems. " |
2754 | "To use the camera, close and open %s again.", | |
2755 | video_device_node_name(cam->v4ldev)); | |
a966f3e7 | 2756 | return -EIO; |
1da177e4 LT |
2757 | } |
2758 | ||
a966f3e7 | 2759 | cam->compression.quality = jc.quality; |
1da177e4 | 2760 | |
a966f3e7 | 2761 | cam->stream = stream; |
1da177e4 | 2762 | |
a966f3e7 LR |
2763 | return 0; |
2764 | } | |
1da177e4 | 2765 | |
a966f3e7 LR |
2766 | |
2767 | static int | |
2768 | sn9c102_vidioc_reqbufs(struct sn9c102_device* cam, void __user * arg) | |
2769 | { | |
2770 | struct v4l2_requestbuffers rb; | |
2771 | u32 i; | |
2772 | int err; | |
2773 | ||
2774 | if (copy_from_user(&rb, arg, sizeof(rb))) | |
2775 | return -EFAULT; | |
2776 | ||
2777 | if (rb.type != V4L2_BUF_TYPE_VIDEO_CAPTURE || | |
2778 | rb.memory != V4L2_MEMORY_MMAP) | |
2779 | return -EINVAL; | |
2780 | ||
2781 | if (cam->io == IO_READ) { | |
2782 | DBG(3, "Close and open the device again to choose the mmap " | |
2783 | "I/O method"); | |
f423b9a8 | 2784 | return -EBUSY; |
a966f3e7 LR |
2785 | } |
2786 | ||
2787 | for (i = 0; i < cam->nbuffers; i++) | |
2788 | if (cam->frame[i].vma_use_count) { | |
2789 | DBG(3, "VIDIOC_REQBUFS failed. Previous buffers are " | |
2790 | "still mapped."); | |
f423b9a8 | 2791 | return -EBUSY; |
a966f3e7 | 2792 | } |
1da177e4 | 2793 | |
a966f3e7 LR |
2794 | if (cam->stream == STREAM_ON) |
2795 | if ((err = sn9c102_stream_interrupt(cam))) | |
2796 | return err; | |
1da177e4 | 2797 | |
a966f3e7 | 2798 | sn9c102_empty_framequeues(cam); |
1da177e4 | 2799 | |
a966f3e7 LR |
2800 | sn9c102_release_buffers(cam); |
2801 | if (rb.count) | |
2802 | rb.count = sn9c102_request_buffers(cam, rb.count, IO_MMAP); | |
1da177e4 | 2803 | |
a966f3e7 LR |
2804 | if (copy_to_user(arg, &rb, sizeof(rb))) { |
2805 | sn9c102_release_buffers(cam); | |
2806 | cam->io = IO_NONE; | |
2807 | return -EFAULT; | |
1da177e4 LT |
2808 | } |
2809 | ||
a966f3e7 | 2810 | cam->io = rb.count ? IO_MMAP : IO_NONE; |
1da177e4 | 2811 | |
a966f3e7 LR |
2812 | return 0; |
2813 | } | |
1da177e4 | 2814 | |
1da177e4 | 2815 | |
a966f3e7 LR |
2816 | static int |
2817 | sn9c102_vidioc_querybuf(struct sn9c102_device* cam, void __user * arg) | |
2818 | { | |
2819 | struct v4l2_buffer b; | |
1da177e4 | 2820 | |
a966f3e7 LR |
2821 | if (copy_from_user(&b, arg, sizeof(b))) |
2822 | return -EFAULT; | |
1da177e4 | 2823 | |
a966f3e7 LR |
2824 | if (b.type != V4L2_BUF_TYPE_VIDEO_CAPTURE || |
2825 | b.index >= cam->nbuffers || cam->io != IO_MMAP) | |
2826 | return -EINVAL; | |
1da177e4 | 2827 | |
a966f3e7 | 2828 | memcpy(&b, &cam->frame[b.index].buf, sizeof(b)); |
1da177e4 | 2829 | |
a966f3e7 LR |
2830 | if (cam->frame[b.index].vma_use_count) |
2831 | b.flags |= V4L2_BUF_FLAG_MAPPED; | |
1da177e4 | 2832 | |
a966f3e7 LR |
2833 | if (cam->frame[b.index].state == F_DONE) |
2834 | b.flags |= V4L2_BUF_FLAG_DONE; | |
2835 | else if (cam->frame[b.index].state != F_UNUSED) | |
2836 | b.flags |= V4L2_BUF_FLAG_QUEUED; | |
1da177e4 | 2837 | |
a966f3e7 LR |
2838 | if (copy_to_user(arg, &b, sizeof(b))) |
2839 | return -EFAULT; | |
1da177e4 | 2840 | |
a966f3e7 LR |
2841 | return 0; |
2842 | } | |
1da177e4 | 2843 | |
1da177e4 | 2844 | |
a966f3e7 LR |
2845 | static int |
2846 | sn9c102_vidioc_qbuf(struct sn9c102_device* cam, void __user * arg) | |
2847 | { | |
2848 | struct v4l2_buffer b; | |
2849 | unsigned long lock_flags; | |
1da177e4 | 2850 | |
a966f3e7 LR |
2851 | if (copy_from_user(&b, arg, sizeof(b))) |
2852 | return -EFAULT; | |
1da177e4 | 2853 | |
a966f3e7 LR |
2854 | if (b.type != V4L2_BUF_TYPE_VIDEO_CAPTURE || |
2855 | b.index >= cam->nbuffers || cam->io != IO_MMAP) | |
2856 | return -EINVAL; | |
1da177e4 | 2857 | |
a966f3e7 LR |
2858 | if (cam->frame[b.index].state != F_UNUSED) |
2859 | return -EINVAL; | |
1da177e4 | 2860 | |
a966f3e7 | 2861 | cam->frame[b.index].state = F_QUEUED; |
1da177e4 | 2862 | |
a966f3e7 LR |
2863 | spin_lock_irqsave(&cam->queue_lock, lock_flags); |
2864 | list_add_tail(&cam->frame[b.index].frame, &cam->inqueue); | |
2865 | spin_unlock_irqrestore(&cam->queue_lock, lock_flags); | |
1da177e4 | 2866 | |
a966f3e7 | 2867 | PDBGG("Frame #%lu queued", (unsigned long)b.index); |
1da177e4 | 2868 | |
a966f3e7 LR |
2869 | return 0; |
2870 | } | |
1da177e4 | 2871 | |
1da177e4 | 2872 | |
a966f3e7 LR |
2873 | static int |
2874 | sn9c102_vidioc_dqbuf(struct sn9c102_device* cam, struct file* filp, | |
d56410e0 | 2875 | void __user * arg) |
a966f3e7 LR |
2876 | { |
2877 | struct v4l2_buffer b; | |
2878 | struct sn9c102_frame_t *f; | |
2879 | unsigned long lock_flags; | |
2ffab02f | 2880 | long timeout; |
f327ebbd | 2881 | int err = 0; |
1da177e4 | 2882 | |
a966f3e7 LR |
2883 | if (copy_from_user(&b, arg, sizeof(b))) |
2884 | return -EFAULT; | |
1da177e4 | 2885 | |
a966f3e7 LR |
2886 | if (b.type != V4L2_BUF_TYPE_VIDEO_CAPTURE || cam->io != IO_MMAP) |
2887 | return -EINVAL; | |
2888 | ||
2889 | if (list_empty(&cam->outqueue)) { | |
2890 | if (cam->stream == STREAM_OFF) | |
2891 | return -EINVAL; | |
2892 | if (filp->f_flags & O_NONBLOCK) | |
2893 | return -EAGAIN; | |
f327ebbd LR |
2894 | if (!cam->module_param.frame_timeout) { |
2895 | err = wait_event_interruptible | |
2896 | ( cam->wait_frame, | |
2897 | (!list_empty(&cam->outqueue)) || | |
2898 | (cam->state & DEV_DISCONNECTED) || | |
2899 | (cam->state & DEV_MISCONFIGURED) ); | |
2900 | if (err) | |
2901 | return err; | |
2902 | } else { | |
f423b9a8 LR |
2903 | timeout = wait_event_interruptible_timeout |
2904 | ( cam->wait_frame, | |
2905 | (!list_empty(&cam->outqueue)) || | |
2906 | (cam->state & DEV_DISCONNECTED) || | |
2907 | (cam->state & DEV_MISCONFIGURED), | |
2908 | cam->module_param.frame_timeout * | |
2909 | 1000 * msecs_to_jiffies(1) ); | |
2910 | if (timeout < 0) | |
2911 | return timeout; | |
f327ebbd LR |
2912 | else if (timeout == 0 && |
2913 | !(cam->state & DEV_DISCONNECTED)) { | |
2914 | DBG(1, "Video frame timeout elapsed"); | |
2915 | return -EIO; | |
2916 | } | |
2917 | } | |
a966f3e7 LR |
2918 | if (cam->state & DEV_DISCONNECTED) |
2919 | return -ENODEV; | |
f327ebbd | 2920 | if (cam->state & DEV_MISCONFIGURED) |
a966f3e7 | 2921 | return -EIO; |
1da177e4 LT |
2922 | } |
2923 | ||
a966f3e7 LR |
2924 | spin_lock_irqsave(&cam->queue_lock, lock_flags); |
2925 | f = list_entry(cam->outqueue.next, struct sn9c102_frame_t, frame); | |
2926 | list_del(cam->outqueue.next); | |
2927 | spin_unlock_irqrestore(&cam->queue_lock, lock_flags); | |
1da177e4 | 2928 | |
a966f3e7 | 2929 | f->state = F_UNUSED; |
1da177e4 | 2930 | |
a966f3e7 LR |
2931 | memcpy(&b, &f->buf, sizeof(b)); |
2932 | if (f->vma_use_count) | |
2933 | b.flags |= V4L2_BUF_FLAG_MAPPED; | |
2934 | ||
2935 | if (copy_to_user(arg, &b, sizeof(b))) | |
2936 | return -EFAULT; | |
2937 | ||
2938 | PDBGG("Frame #%lu dequeued", (unsigned long)f->buf.index); | |
2939 | ||
2940 | return 0; | |
2941 | } | |
2942 | ||
2943 | ||
2944 | static int | |
2945 | sn9c102_vidioc_streamon(struct sn9c102_device* cam, void __user * arg) | |
2946 | { | |
2947 | int type; | |
2948 | ||
2949 | if (copy_from_user(&type, arg, sizeof(type))) | |
2950 | return -EFAULT; | |
2951 | ||
2952 | if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE || cam->io != IO_MMAP) | |
2953 | return -EINVAL; | |
2954 | ||
a966f3e7 LR |
2955 | cam->stream = STREAM_ON; |
2956 | ||
2957 | DBG(3, "Stream on"); | |
2958 | ||
2959 | return 0; | |
2960 | } | |
2961 | ||
2962 | ||
2963 | static int | |
2964 | sn9c102_vidioc_streamoff(struct sn9c102_device* cam, void __user * arg) | |
2965 | { | |
2966 | int type, err; | |
2967 | ||
2968 | if (copy_from_user(&type, arg, sizeof(type))) | |
2969 | return -EFAULT; | |
2970 | ||
2971 | if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE || cam->io != IO_MMAP) | |
2972 | return -EINVAL; | |
2973 | ||
2974 | if (cam->stream == STREAM_ON) | |
2975 | if ((err = sn9c102_stream_interrupt(cam))) | |
2976 | return err; | |
2977 | ||
2978 | sn9c102_empty_framequeues(cam); | |
2979 | ||
2980 | DBG(3, "Stream off"); | |
2981 | ||
2982 | return 0; | |
2983 | } | |
2984 | ||
2985 | ||
2986 | static int | |
2987 | sn9c102_vidioc_g_parm(struct sn9c102_device* cam, void __user * arg) | |
2988 | { | |
2989 | struct v4l2_streamparm sp; | |
2990 | ||
2991 | if (copy_from_user(&sp, arg, sizeof(sp))) | |
2992 | return -EFAULT; | |
2993 | ||
2994 | if (sp.type != V4L2_BUF_TYPE_VIDEO_CAPTURE) | |
2995 | return -EINVAL; | |
2996 | ||
2997 | sp.parm.capture.extendedmode = 0; | |
2998 | sp.parm.capture.readbuffers = cam->nreadbuffers; | |
2999 | ||
3000 | if (copy_to_user(arg, &sp, sizeof(sp))) | |
3001 | return -EFAULT; | |
3002 | ||
3003 | return 0; | |
3004 | } | |
3005 | ||
3006 | ||
3007 | static int | |
3008 | sn9c102_vidioc_s_parm(struct sn9c102_device* cam, void __user * arg) | |
3009 | { | |
3010 | struct v4l2_streamparm sp; | |
3011 | ||
3012 | if (copy_from_user(&sp, arg, sizeof(sp))) | |
3013 | return -EFAULT; | |
3014 | ||
3015 | if (sp.type != V4L2_BUF_TYPE_VIDEO_CAPTURE) | |
3016 | return -EINVAL; | |
3017 | ||
3018 | sp.parm.capture.extendedmode = 0; | |
1da177e4 | 3019 | |
a966f3e7 | 3020 | if (sp.parm.capture.readbuffers == 0) |
1da177e4 LT |
3021 | sp.parm.capture.readbuffers = cam->nreadbuffers; |
3022 | ||
a966f3e7 LR |
3023 | if (sp.parm.capture.readbuffers > SN9C102_MAX_FRAMES) |
3024 | sp.parm.capture.readbuffers = SN9C102_MAX_FRAMES; | |
1da177e4 | 3025 | |
a966f3e7 LR |
3026 | if (copy_to_user(arg, &sp, sizeof(sp))) |
3027 | return -EFAULT; | |
1da177e4 | 3028 | |
a966f3e7 | 3029 | cam->nreadbuffers = sp.parm.capture.readbuffers; |
1da177e4 | 3030 | |
a966f3e7 LR |
3031 | return 0; |
3032 | } | |
1da177e4 | 3033 | |
1da177e4 | 3034 | |
f327ebbd LR |
3035 | static int |
3036 | sn9c102_vidioc_enumaudio(struct sn9c102_device* cam, void __user * arg) | |
3037 | { | |
3038 | struct v4l2_audio audio; | |
3039 | ||
3040 | if (cam->bridge == BRIDGE_SN9C101 || cam->bridge == BRIDGE_SN9C102) | |
3041 | return -EINVAL; | |
3042 | ||
3043 | if (copy_from_user(&audio, arg, sizeof(audio))) | |
3044 | return -EFAULT; | |
3045 | ||
3046 | if (audio.index != 0) | |
3047 | return -EINVAL; | |
3048 | ||
3049 | strcpy(audio.name, "Microphone"); | |
3050 | audio.capability = 0; | |
3051 | audio.mode = 0; | |
3052 | ||
3053 | if (copy_to_user(arg, &audio, sizeof(audio))) | |
3054 | return -EFAULT; | |
3055 | ||
3056 | return 0; | |
3057 | } | |
3058 | ||
3059 | ||
3060 | static int | |
3061 | sn9c102_vidioc_g_audio(struct sn9c102_device* cam, void __user * arg) | |
3062 | { | |
3063 | struct v4l2_audio audio; | |
3064 | ||
3065 | if (cam->bridge == BRIDGE_SN9C101 || cam->bridge == BRIDGE_SN9C102) | |
3066 | return -EINVAL; | |
3067 | ||
3068 | if (copy_from_user(&audio, arg, sizeof(audio))) | |
3069 | return -EFAULT; | |
3070 | ||
3071 | memset(&audio, 0, sizeof(audio)); | |
3072 | strcpy(audio.name, "Microphone"); | |
3073 | ||
3074 | if (copy_to_user(arg, &audio, sizeof(audio))) | |
3075 | return -EFAULT; | |
3076 | ||
3077 | return 0; | |
3078 | } | |
3079 | ||
3080 | ||
3081 | static int | |
3082 | sn9c102_vidioc_s_audio(struct sn9c102_device* cam, void __user * arg) | |
3083 | { | |
3084 | struct v4l2_audio audio; | |
3085 | ||
3086 | if (cam->bridge == BRIDGE_SN9C101 || cam->bridge == BRIDGE_SN9C102) | |
3087 | return -EINVAL; | |
3088 | ||
3089 | if (copy_from_user(&audio, arg, sizeof(audio))) | |
3090 | return -EFAULT; | |
3091 | ||
3092 | if (audio.index != 0) | |
3093 | return -EINVAL; | |
3094 | ||
3095 | return 0; | |
3096 | } | |
3097 | ||
3098 | ||
069b7479 | 3099 | static long sn9c102_ioctl_v4l2(struct file *filp, |
bec43661 | 3100 | unsigned int cmd, void __user *arg) |
a966f3e7 | 3101 | { |
c170ecf4 | 3102 | struct sn9c102_device *cam = video_drvdata(filp); |
1da177e4 | 3103 | |
a966f3e7 | 3104 | switch (cmd) { |
1da177e4 | 3105 | |
a966f3e7 LR |
3106 | case VIDIOC_QUERYCAP: |
3107 | return sn9c102_vidioc_querycap(cam, arg); | |
1da177e4 | 3108 | |
a966f3e7 LR |
3109 | case VIDIOC_ENUMINPUT: |
3110 | return sn9c102_vidioc_enuminput(cam, arg); | |
1da177e4 | 3111 | |
a966f3e7 | 3112 | case VIDIOC_G_INPUT: |
2ffab02f LR |
3113 | return sn9c102_vidioc_g_input(cam, arg); |
3114 | ||
a966f3e7 | 3115 | case VIDIOC_S_INPUT: |
2ffab02f | 3116 | return sn9c102_vidioc_s_input(cam, arg); |
1da177e4 | 3117 | |
a966f3e7 LR |
3118 | case VIDIOC_QUERYCTRL: |
3119 | return sn9c102_vidioc_query_ctrl(cam, arg); | |
3120 | ||
3121 | case VIDIOC_G_CTRL: | |
3122 | return sn9c102_vidioc_g_ctrl(cam, arg); | |
3123 | ||
a966f3e7 LR |
3124 | case VIDIOC_S_CTRL: |
3125 | return sn9c102_vidioc_s_ctrl(cam, arg); | |
3126 | ||
a966f3e7 LR |
3127 | case VIDIOC_CROPCAP: |
3128 | return sn9c102_vidioc_cropcap(cam, arg); | |
3129 | ||
3130 | case VIDIOC_G_CROP: | |
3131 | return sn9c102_vidioc_g_crop(cam, arg); | |
3132 | ||
3133 | case VIDIOC_S_CROP: | |
3134 | return sn9c102_vidioc_s_crop(cam, arg); | |
3135 | ||
f327ebbd LR |
3136 | case VIDIOC_ENUM_FRAMESIZES: |
3137 | return sn9c102_vidioc_enum_framesizes(cam, arg); | |
3138 | ||
a966f3e7 LR |
3139 | case VIDIOC_ENUM_FMT: |
3140 | return sn9c102_vidioc_enum_fmt(cam, arg); | |
3141 | ||
3142 | case VIDIOC_G_FMT: | |
3143 | return sn9c102_vidioc_g_fmt(cam, arg); | |
3144 | ||
3145 | case VIDIOC_TRY_FMT: | |
3146 | case VIDIOC_S_FMT: | |
3147 | return sn9c102_vidioc_try_s_fmt(cam, cmd, arg); | |
3148 | ||
3149 | case VIDIOC_G_JPEGCOMP: | |
3150 | return sn9c102_vidioc_g_jpegcomp(cam, arg); | |
3151 | ||
3152 | case VIDIOC_S_JPEGCOMP: | |
3153 | return sn9c102_vidioc_s_jpegcomp(cam, arg); | |
3154 | ||
3155 | case VIDIOC_REQBUFS: | |
3156 | return sn9c102_vidioc_reqbufs(cam, arg); | |
3157 | ||
3158 | case VIDIOC_QUERYBUF: | |
3159 | return sn9c102_vidioc_querybuf(cam, arg); | |
3160 | ||
3161 | case VIDIOC_QBUF: | |
3162 | return sn9c102_vidioc_qbuf(cam, arg); | |
3163 | ||
3164 | case VIDIOC_DQBUF: | |
3165 | return sn9c102_vidioc_dqbuf(cam, filp, arg); | |
3166 | ||
3167 | case VIDIOC_STREAMON: | |
3168 | return sn9c102_vidioc_streamon(cam, arg); | |
3169 | ||
3170 | case VIDIOC_STREAMOFF: | |
3171 | return sn9c102_vidioc_streamoff(cam, arg); | |
3172 | ||
3173 | case VIDIOC_G_PARM: | |
3174 | return sn9c102_vidioc_g_parm(cam, arg); | |
3175 | ||
a966f3e7 LR |
3176 | case VIDIOC_S_PARM: |
3177 | return sn9c102_vidioc_s_parm(cam, arg); | |
1da177e4 | 3178 | |
f327ebbd LR |
3179 | case VIDIOC_ENUMAUDIO: |
3180 | return sn9c102_vidioc_enumaudio(cam, arg); | |
3181 | ||
3182 | case VIDIOC_G_AUDIO: | |
3183 | return sn9c102_vidioc_g_audio(cam, arg); | |
3184 | ||
3185 | case VIDIOC_S_AUDIO: | |
3186 | return sn9c102_vidioc_s_audio(cam, arg); | |
3187 | ||
1da177e4 | 3188 | default: |
7a286cc1 | 3189 | return -ENOTTY; |
1da177e4 LT |
3190 | |
3191 | } | |
3192 | } | |
3193 | ||
3194 | ||
069b7479 | 3195 | static long sn9c102_ioctl(struct file *filp, |
d56410e0 | 3196 | unsigned int cmd, unsigned long arg) |
1da177e4 | 3197 | { |
c170ecf4 | 3198 | struct sn9c102_device *cam = video_drvdata(filp); |
1da177e4 LT |
3199 | int err = 0; |
3200 | ||
4186ecf8 | 3201 | if (mutex_lock_interruptible(&cam->fileop_mutex)) |
1da177e4 LT |
3202 | return -ERESTARTSYS; |
3203 | ||
3204 | if (cam->state & DEV_DISCONNECTED) { | |
a966f3e7 | 3205 | DBG(1, "Device not present"); |
4186ecf8 | 3206 | mutex_unlock(&cam->fileop_mutex); |
1da177e4 LT |
3207 | return -ENODEV; |
3208 | } | |
3209 | ||
3210 | if (cam->state & DEV_MISCONFIGURED) { | |
a966f3e7 LR |
3211 | DBG(1, "The camera is misconfigured. Close and open it " |
3212 | "again."); | |
4186ecf8 | 3213 | mutex_unlock(&cam->fileop_mutex); |
1da177e4 LT |
3214 | return -EIO; |
3215 | } | |
3216 | ||
cd6fcc55 LR |
3217 | V4LDBG(3, "sn9c102", cmd); |
3218 | ||
bec43661 | 3219 | err = sn9c102_ioctl_v4l2(filp, cmd, (void __user *)arg); |
1da177e4 | 3220 | |
4186ecf8 | 3221 | mutex_unlock(&cam->fileop_mutex); |
1da177e4 LT |
3222 | |
3223 | return err; | |
3224 | } | |
3225 | ||
a966f3e7 | 3226 | /*****************************************************************************/ |
1da177e4 | 3227 | |
bec43661 | 3228 | static const struct v4l2_file_operations sn9c102_fops = { |
a966f3e7 | 3229 | .owner = THIS_MODULE, |
480b55c2 | 3230 | .open = sn9c102_open, |
1da177e4 | 3231 | .release = sn9c102_release, |
feecf93d | 3232 | .unlocked_ioctl = sn9c102_ioctl, |
480b55c2 LR |
3233 | .read = sn9c102_read, |
3234 | .poll = sn9c102_poll, | |
3235 | .mmap = sn9c102_mmap, | |
1da177e4 LT |
3236 | }; |
3237 | ||
3238 | /*****************************************************************************/ | |
3239 | ||
3240 | /* It exists a single interface only. We do not need to validate anything. */ | |
3241 | static int | |
3242 | sn9c102_usb_probe(struct usb_interface* intf, const struct usb_device_id* id) | |
3243 | { | |
3244 | struct usb_device *udev = interface_to_usbdev(intf); | |
3245 | struct sn9c102_device* cam; | |
ff699e6b | 3246 | static unsigned int dev_nr; |
a966f3e7 | 3247 | unsigned int i; |
1da177e4 LT |
3248 | int err = 0, r; |
3249 | ||
cd6fcc55 | 3250 | if (!(cam = kzalloc(sizeof(struct sn9c102_device), GFP_KERNEL))) |
1da177e4 | 3251 | return -ENOMEM; |
1da177e4 LT |
3252 | |
3253 | cam->usbdev = udev; | |
1da177e4 | 3254 | |
cd6fcc55 | 3255 | if (!(cam->control_buffer = kzalloc(8, GFP_KERNEL))) { |
f327ebbd | 3256 | DBG(1, "kzalloc() failed"); |
1da177e4 LT |
3257 | err = -ENOMEM; |
3258 | goto fail; | |
3259 | } | |
1da177e4 LT |
3260 | |
3261 | if (!(cam->v4ldev = video_device_alloc())) { | |
a966f3e7 | 3262 | DBG(1, "video_device_alloc() failed"); |
1da177e4 LT |
3263 | err = -ENOMEM; |
3264 | goto fail; | |
3265 | } | |
3266 | ||
1da177e4 | 3267 | r = sn9c102_read_reg(cam, 0x00); |
f327ebbd | 3268 | if (r < 0 || (r != 0x10 && r != 0x11 && r != 0x12)) { |
f423b9a8 LR |
3269 | DBG(1, "Sorry, this is not a SN9C1xx-based camera " |
3270 | "(vid:pid 0x%04X:0x%04X)", id->idVendor, id->idProduct); | |
1da177e4 LT |
3271 | err = -ENODEV; |
3272 | goto fail; | |
3273 | } | |
3274 | ||
f327ebbd | 3275 | cam->bridge = id->driver_info; |
1da177e4 LT |
3276 | switch (cam->bridge) { |
3277 | case BRIDGE_SN9C101: | |
3278 | case BRIDGE_SN9C102: | |
3279 | DBG(2, "SN9C10[12] PC Camera Controller detected " | |
f423b9a8 | 3280 | "(vid:pid 0x%04X:0x%04X)", id->idVendor, id->idProduct); |
1da177e4 LT |
3281 | break; |
3282 | case BRIDGE_SN9C103: | |
3283 | DBG(2, "SN9C103 PC Camera Controller detected " | |
f423b9a8 | 3284 | "(vid:pid 0x%04X:0x%04X)", id->idVendor, id->idProduct); |
f327ebbd LR |
3285 | break; |
3286 | case BRIDGE_SN9C105: | |
3287 | DBG(2, "SN9C105 PC Camera Controller detected " | |
f423b9a8 | 3288 | "(vid:pid 0x%04X:0x%04X)", id->idVendor, id->idProduct); |
f327ebbd LR |
3289 | break; |
3290 | case BRIDGE_SN9C120: | |
3291 | DBG(2, "SN9C120 PC Camera Controller detected " | |
f423b9a8 | 3292 | "(vid:pid 0x%04X:0x%04X)", id->idVendor, id->idProduct); |
1da177e4 LT |
3293 | break; |
3294 | } | |
3295 | ||
480b55c2 | 3296 | for (i = 0; i < ARRAY_SIZE(sn9c102_sensor_table); i++) { |
1da177e4 LT |
3297 | err = sn9c102_sensor_table[i](cam); |
3298 | if (!err) | |
3299 | break; | |
3300 | } | |
3301 | ||
2ffab02f LR |
3302 | if (!err) { |
3303 | DBG(2, "%s image sensor detected", cam->sensor.name); | |
1da177e4 | 3304 | DBG(3, "Support for %s maintained by %s", |
2ffab02f | 3305 | cam->sensor.name, cam->sensor.maintainer); |
1da177e4 | 3306 | } else { |
480b55c2 | 3307 | DBG(1, "No supported image sensor detected for this bridge"); |
1da177e4 LT |
3308 | err = -ENODEV; |
3309 | goto fail; | |
3310 | } | |
3311 | ||
f327ebbd LR |
3312 | if (!(cam->bridge & cam->sensor.supported_bridge)) { |
3313 | DBG(1, "Bridge not supported"); | |
3314 | err = -ENODEV; | |
3315 | goto fail; | |
3316 | } | |
3317 | ||
1da177e4 | 3318 | if (sn9c102_init(cam)) { |
a966f3e7 | 3319 | DBG(1, "Initialization failed. I will retry on open()."); |
1da177e4 LT |
3320 | cam->state |= DEV_MISCONFIGURED; |
3321 | } | |
3322 | ||
f327ebbd | 3323 | strcpy(cam->v4ldev->name, "SN9C1xx PC Camera"); |
1da177e4 | 3324 | cam->v4ldev->fops = &sn9c102_fops; |
1da177e4 | 3325 | cam->v4ldev->release = video_device_release; |
748c7f80 | 3326 | cam->v4ldev->parent = &udev->dev; |
1da177e4 | 3327 | |
3770be34 | 3328 | init_completion(&cam->probe); |
1da177e4 LT |
3329 | |
3330 | err = video_register_device(cam->v4ldev, VFL_TYPE_GRABBER, | |
d56410e0 | 3331 | video_nr[dev_nr]); |
1da177e4 | 3332 | if (err) { |
a966f3e7 | 3333 | DBG(1, "V4L2 device registration failed"); |
1da177e4 | 3334 | if (err == -ENFILE && video_nr[dev_nr] == -1) |
a966f3e7 | 3335 | DBG(1, "Free /dev/videoX node not found"); |
f327ebbd LR |
3336 | video_nr[dev_nr] = -1; |
3337 | dev_nr = (dev_nr < SN9C102_MAX_DEVICES-1) ? dev_nr+1 : 0; | |
3770be34 | 3338 | complete_all(&cam->probe); |
f327ebbd | 3339 | goto fail; |
1da177e4 LT |
3340 | } |
3341 | ||
38c7c036 LP |
3342 | DBG(2, "V4L2 device registered as %s", |
3343 | video_device_node_name(cam->v4ldev)); | |
1da177e4 | 3344 | |
ddef2dcc | 3345 | video_set_drvdata(cam->v4ldev, cam); |
1da177e4 | 3346 | cam->module_param.force_munmap = force_munmap[dev_nr]; |
2ffab02f | 3347 | cam->module_param.frame_timeout = frame_timeout[dev_nr]; |
1da177e4 LT |
3348 | |
3349 | dev_nr = (dev_nr < SN9C102_MAX_DEVICES-1) ? dev_nr+1 : 0; | |
3350 | ||
cd6fcc55 | 3351 | #ifdef CONFIG_VIDEO_ADV_DEBUG |
c12e3be0 | 3352 | err = sn9c102_create_sysfs(cam); |
f327ebbd LR |
3353 | if (!err) |
3354 | DBG(2, "Optional device control through 'sysfs' " | |
3355 | "interface ready"); | |
3356 | else | |
3357 | DBG(2, "Failed to create optional 'sysfs' interface for " | |
3358 | "device controlling. Error #%d", err); | |
3359 | #else | |
3360 | DBG(2, "Optional device control through 'sysfs' interface disabled"); | |
f423b9a8 LR |
3361 | DBG(3, "Compile the kernel with the 'CONFIG_VIDEO_ADV_DEBUG' " |
3362 | "configuration option to enable it."); | |
cd6fcc55 | 3363 | #endif |
1da177e4 LT |
3364 | |
3365 | usb_set_intfdata(intf, cam); | |
3770be34 LR |
3366 | kref_init(&cam->kref); |
3367 | usb_get_dev(cam->usbdev); | |
1da177e4 | 3368 | |
3770be34 | 3369 | complete_all(&cam->probe); |
1da177e4 LT |
3370 | |
3371 | return 0; | |
3372 | ||
3373 | fail: | |
3374 | if (cam) { | |
3375 | kfree(cam->control_buffer); | |
3376 | if (cam->v4ldev) | |
3377 | video_device_release(cam->v4ldev); | |
3378 | kfree(cam); | |
3379 | } | |
3380 | return err; | |
3381 | } | |
3382 | ||
3383 | ||
3384 | static void sn9c102_usb_disconnect(struct usb_interface* intf) | |
3385 | { | |
3770be34 | 3386 | struct sn9c102_device* cam; |
1da177e4 | 3387 | |
3770be34 | 3388 | down_write(&sn9c102_dev_lock); |
1da177e4 | 3389 | |
3770be34 | 3390 | cam = usb_get_intfdata(intf); |
1da177e4 | 3391 | |
a966f3e7 | 3392 | DBG(2, "Disconnecting %s...", cam->v4ldev->name); |
1da177e4 | 3393 | |
1da177e4 | 3394 | if (cam->users) { |
38c7c036 LP |
3395 | DBG(2, "Device %s is open! Deregistration and memory " |
3396 | "deallocation are deferred.", | |
3397 | video_device_node_name(cam->v4ldev)); | |
1da177e4 LT |
3398 | cam->state |= DEV_MISCONFIGURED; |
3399 | sn9c102_stop_transfer(cam); | |
3400 | cam->state |= DEV_DISCONNECTED; | |
3401 | wake_up_interruptible(&cam->wait_frame); | |
2ffab02f | 3402 | wake_up(&cam->wait_stream); |
3770be34 | 3403 | } else |
1da177e4 | 3404 | cam->state |= DEV_DISCONNECTED; |
1da177e4 | 3405 | |
3770be34 | 3406 | wake_up_interruptible_all(&cam->wait_open); |
1da177e4 | 3407 | |
3770be34 | 3408 | kref_put(&cam->kref, sn9c102_release_resources); |
1da177e4 | 3409 | |
3770be34 | 3410 | up_write(&sn9c102_dev_lock); |
1da177e4 LT |
3411 | } |
3412 | ||
3413 | ||
3414 | static struct usb_driver sn9c102_usb_driver = { | |
1da177e4 LT |
3415 | .name = "sn9c102", |
3416 | .id_table = sn9c102_id_table, | |
3417 | .probe = sn9c102_usb_probe, | |
3418 | .disconnect = sn9c102_usb_disconnect, | |
3419 | }; | |
3420 | ||
ecb3b2b3 | 3421 | module_usb_driver(sn9c102_usb_driver); |