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[media] pwc: Make fps runtime configurable through s_parm, drop fps module param
[deliverable/linux.git] / drivers / media / video / pwc / pwc-v4l.c
1 /* Linux driver for Philips webcam
2 USB and Video4Linux interface part.
3 (C) 1999-2004 Nemosoft Unv.
4 (C) 2004-2006 Luc Saillard (luc@saillard.org)
5 (C) 2011 Hans de Goede <hdegoede@redhat.com>
6
7 NOTE: this version of pwc is an unofficial (modified) release of pwc & pcwx
8 driver and thus may have bugs that are not present in the original version.
9 Please send bug reports and support requests to <luc@saillard.org>.
10 The decompression routines have been implemented by reverse-engineering the
11 Nemosoft binary pwcx module. Caveat emptor.
12
13 This program is free software; you can redistribute it and/or modify
14 it under the terms of the GNU General Public License as published by
15 the Free Software Foundation; either version 2 of the License, or
16 (at your option) any later version.
17
18 This program is distributed in the hope that it will be useful,
19 but WITHOUT ANY WARRANTY; without even the implied warranty of
20 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 GNU General Public License for more details.
22
23 You should have received a copy of the GNU General Public License
24 along with this program; if not, write to the Free Software
25 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
26
27 */
28
29 #include <linux/errno.h>
30 #include <linux/init.h>
31 #include <linux/mm.h>
32 #include <linux/module.h>
33 #include <linux/poll.h>
34 #include <linux/vmalloc.h>
35 #include <linux/jiffies.h>
36 #include <asm/io.h>
37
38 #include "pwc.h"
39
40 #define PWC_CID_CUSTOM(ctrl) ((V4L2_CID_USER_BASE | 0xf000) + custom_ ## ctrl)
41
42 static int pwc_g_volatile_ctrl(struct v4l2_ctrl *ctrl);
43 static int pwc_s_ctrl(struct v4l2_ctrl *ctrl);
44
45 static const struct v4l2_ctrl_ops pwc_ctrl_ops = {
46 .g_volatile_ctrl = pwc_g_volatile_ctrl,
47 .s_ctrl = pwc_s_ctrl,
48 };
49
50 enum { awb_indoor, awb_outdoor, awb_fl, awb_manual, awb_auto };
51 enum { custom_autocontour, custom_contour, custom_noise_reduction,
52 custom_awb_speed, custom_awb_delay,
53 custom_save_user, custom_restore_user, custom_restore_factory };
54
55 const char * const pwc_auto_whitebal_qmenu[] = {
56 "Indoor (Incandescant Lighting) Mode",
57 "Outdoor (Sunlight) Mode",
58 "Indoor (Fluorescent Lighting) Mode",
59 "Manual Mode",
60 "Auto Mode",
61 NULL
62 };
63
64 static const struct v4l2_ctrl_config pwc_auto_white_balance_cfg = {
65 .ops = &pwc_ctrl_ops,
66 .id = V4L2_CID_AUTO_WHITE_BALANCE,
67 .type = V4L2_CTRL_TYPE_MENU,
68 .max = awb_auto,
69 .qmenu = pwc_auto_whitebal_qmenu,
70 };
71
72 static const struct v4l2_ctrl_config pwc_autocontour_cfg = {
73 .ops = &pwc_ctrl_ops,
74 .id = PWC_CID_CUSTOM(autocontour),
75 .type = V4L2_CTRL_TYPE_BOOLEAN,
76 .name = "Auto contour",
77 .min = 0,
78 .max = 1,
79 .step = 1,
80 };
81
82 static const struct v4l2_ctrl_config pwc_contour_cfg = {
83 .ops = &pwc_ctrl_ops,
84 .id = PWC_CID_CUSTOM(contour),
85 .type = V4L2_CTRL_TYPE_INTEGER,
86 .name = "Contour",
87 .flags = V4L2_CTRL_FLAG_SLIDER,
88 .min = 0,
89 .max = 63,
90 .step = 1,
91 };
92
93 static const struct v4l2_ctrl_config pwc_backlight_cfg = {
94 .ops = &pwc_ctrl_ops,
95 .id = V4L2_CID_BACKLIGHT_COMPENSATION,
96 .type = V4L2_CTRL_TYPE_BOOLEAN,
97 .min = 0,
98 .max = 1,
99 .step = 1,
100 };
101
102 static const struct v4l2_ctrl_config pwc_flicker_cfg = {
103 .ops = &pwc_ctrl_ops,
104 .id = V4L2_CID_BAND_STOP_FILTER,
105 .type = V4L2_CTRL_TYPE_BOOLEAN,
106 .min = 0,
107 .max = 1,
108 .step = 1,
109 };
110
111 static const struct v4l2_ctrl_config pwc_noise_reduction_cfg = {
112 .ops = &pwc_ctrl_ops,
113 .id = PWC_CID_CUSTOM(noise_reduction),
114 .type = V4L2_CTRL_TYPE_INTEGER,
115 .name = "Dynamic Noise Reduction",
116 .min = 0,
117 .max = 3,
118 .step = 1,
119 };
120
121 static const struct v4l2_ctrl_config pwc_save_user_cfg = {
122 .ops = &pwc_ctrl_ops,
123 .id = PWC_CID_CUSTOM(save_user),
124 .type = V4L2_CTRL_TYPE_BUTTON,
125 .name = "Save User Settings",
126 };
127
128 static const struct v4l2_ctrl_config pwc_restore_user_cfg = {
129 .ops = &pwc_ctrl_ops,
130 .id = PWC_CID_CUSTOM(restore_user),
131 .type = V4L2_CTRL_TYPE_BUTTON,
132 .name = "Restore User Settings",
133 };
134
135 static const struct v4l2_ctrl_config pwc_restore_factory_cfg = {
136 .ops = &pwc_ctrl_ops,
137 .id = PWC_CID_CUSTOM(restore_factory),
138 .type = V4L2_CTRL_TYPE_BUTTON,
139 .name = "Restore Factory Settings",
140 };
141
142 static const struct v4l2_ctrl_config pwc_awb_speed_cfg = {
143 .ops = &pwc_ctrl_ops,
144 .id = PWC_CID_CUSTOM(awb_speed),
145 .type = V4L2_CTRL_TYPE_INTEGER,
146 .name = "Auto White Balance Speed",
147 .min = 1,
148 .max = 32,
149 .step = 1,
150 };
151
152 static const struct v4l2_ctrl_config pwc_awb_delay_cfg = {
153 .ops = &pwc_ctrl_ops,
154 .id = PWC_CID_CUSTOM(awb_delay),
155 .type = V4L2_CTRL_TYPE_INTEGER,
156 .name = "Auto White Balance Delay",
157 .min = 0,
158 .max = 63,
159 .step = 1,
160 };
161
162 int pwc_init_controls(struct pwc_device *pdev)
163 {
164 struct v4l2_ctrl_handler *hdl;
165 struct v4l2_ctrl_config cfg;
166 int r, def;
167
168 hdl = &pdev->ctrl_handler;
169 r = v4l2_ctrl_handler_init(hdl, 20);
170 if (r)
171 return r;
172
173 /* Brightness, contrast, saturation, gamma */
174 r = pwc_get_u8_ctrl(pdev, GET_LUM_CTL, BRIGHTNESS_FORMATTER, &def);
175 if (r || def > 127)
176 def = 63;
177 pdev->brightness = v4l2_ctrl_new_std(hdl, &pwc_ctrl_ops,
178 V4L2_CID_BRIGHTNESS, 0, 127, 1, def);
179
180 r = pwc_get_u8_ctrl(pdev, GET_LUM_CTL, CONTRAST_FORMATTER, &def);
181 if (r || def > 63)
182 def = 31;
183 pdev->contrast = v4l2_ctrl_new_std(hdl, &pwc_ctrl_ops,
184 V4L2_CID_CONTRAST, 0, 63, 1, def);
185
186 if (pdev->type >= 675) {
187 if (pdev->type < 730)
188 pdev->saturation_fmt = SATURATION_MODE_FORMATTER2;
189 else
190 pdev->saturation_fmt = SATURATION_MODE_FORMATTER1;
191 r = pwc_get_s8_ctrl(pdev, GET_CHROM_CTL, pdev->saturation_fmt,
192 &def);
193 if (r || def < -100 || def > 100)
194 def = 0;
195 pdev->saturation = v4l2_ctrl_new_std(hdl, &pwc_ctrl_ops,
196 V4L2_CID_SATURATION, -100, 100, 1, def);
197 }
198
199 r = pwc_get_u8_ctrl(pdev, GET_LUM_CTL, GAMMA_FORMATTER, &def);
200 if (r || def > 31)
201 def = 15;
202 pdev->gamma = v4l2_ctrl_new_std(hdl, &pwc_ctrl_ops,
203 V4L2_CID_GAMMA, 0, 31, 1, def);
204
205 /* auto white balance, red gain, blue gain */
206 r = pwc_get_u8_ctrl(pdev, GET_CHROM_CTL, WB_MODE_FORMATTER, &def);
207 if (r || def > awb_auto)
208 def = awb_auto;
209 cfg = pwc_auto_white_balance_cfg;
210 cfg.name = v4l2_ctrl_get_name(cfg.id);
211 cfg.def = def;
212 pdev->auto_white_balance = v4l2_ctrl_new_custom(hdl, &cfg, NULL);
213 /* check auto controls to avoid NULL deref in v4l2_ctrl_auto_cluster */
214 if (!pdev->auto_white_balance)
215 return hdl->error;
216
217 r = pwc_get_u8_ctrl(pdev, GET_CHROM_CTL,
218 PRESET_MANUAL_RED_GAIN_FORMATTER, &def);
219 if (r)
220 def = 127;
221 pdev->red_balance = v4l2_ctrl_new_std(hdl, &pwc_ctrl_ops,
222 V4L2_CID_RED_BALANCE, 0, 255, 1, def);
223
224 r = pwc_get_u8_ctrl(pdev, GET_CHROM_CTL,
225 PRESET_MANUAL_BLUE_GAIN_FORMATTER, &def);
226 if (r)
227 def = 127;
228 pdev->blue_balance = v4l2_ctrl_new_std(hdl, &pwc_ctrl_ops,
229 V4L2_CID_BLUE_BALANCE, 0, 255, 1, def);
230
231 v4l2_ctrl_auto_cluster(3, &pdev->auto_white_balance, awb_manual, true);
232
233 /* autogain, gain */
234 r = pwc_get_u8_ctrl(pdev, GET_LUM_CTL, AGC_MODE_FORMATTER, &def);
235 if (r || (def != 0 && def != 0xff))
236 def = 0;
237 /* Note a register value if 0 means auto gain is on */
238 pdev->autogain = v4l2_ctrl_new_std(hdl, &pwc_ctrl_ops,
239 V4L2_CID_AUTOGAIN, 0, 1, 1, def == 0);
240 if (!pdev->autogain)
241 return hdl->error;
242
243 r = pwc_get_u8_ctrl(pdev, GET_LUM_CTL, PRESET_AGC_FORMATTER, &def);
244 if (r || def > 63)
245 def = 31;
246 pdev->gain = v4l2_ctrl_new_std(hdl, &pwc_ctrl_ops,
247 V4L2_CID_GAIN, 0, 63, 1, def);
248
249 /* auto exposure, exposure */
250 if (DEVICE_USE_CODEC2(pdev->type)) {
251 r = pwc_get_u8_ctrl(pdev, GET_LUM_CTL, SHUTTER_MODE_FORMATTER,
252 &def);
253 if (r || (def != 0 && def != 0xff))
254 def = 0;
255 /*
256 * def = 0 auto, def = ff manual
257 * menu idx 0 = auto, idx 1 = manual
258 */
259 pdev->exposure_auto = v4l2_ctrl_new_std_menu(hdl,
260 &pwc_ctrl_ops,
261 V4L2_CID_EXPOSURE_AUTO,
262 1, 0, def != 0);
263 if (!pdev->exposure_auto)
264 return hdl->error;
265
266 /* GET_LUM_CTL, PRESET_SHUTTER_FORMATTER is unreliable */
267 r = pwc_get_u16_ctrl(pdev, GET_STATUS_CTL,
268 READ_SHUTTER_FORMATTER, &def);
269 if (r || def > 655)
270 def = 655;
271 pdev->exposure = v4l2_ctrl_new_std(hdl, &pwc_ctrl_ops,
272 V4L2_CID_EXPOSURE, 0, 655, 1, def);
273 /* CODEC2: separate auto gain & auto exposure */
274 v4l2_ctrl_auto_cluster(2, &pdev->autogain, 0, true);
275 v4l2_ctrl_auto_cluster(2, &pdev->exposure_auto,
276 V4L2_EXPOSURE_MANUAL, true);
277 } else if (DEVICE_USE_CODEC3(pdev->type)) {
278 /* GET_LUM_CTL, PRESET_SHUTTER_FORMATTER is unreliable */
279 r = pwc_get_u16_ctrl(pdev, GET_STATUS_CTL,
280 READ_SHUTTER_FORMATTER, &def);
281 if (r || def > 255)
282 def = 255;
283 pdev->exposure = v4l2_ctrl_new_std(hdl, &pwc_ctrl_ops,
284 V4L2_CID_EXPOSURE, 0, 255, 1, def);
285 /* CODEC3: both gain and exposure controlled by autogain */
286 pdev->autogain_expo_cluster[0] = pdev->autogain;
287 pdev->autogain_expo_cluster[1] = pdev->gain;
288 pdev->autogain_expo_cluster[2] = pdev->exposure;
289 v4l2_ctrl_auto_cluster(3, pdev->autogain_expo_cluster,
290 0, true);
291 }
292
293 /* color / bw setting */
294 r = pwc_get_u8_ctrl(pdev, GET_CHROM_CTL, COLOUR_MODE_FORMATTER,
295 &def);
296 if (r || (def != 0 && def != 0xff))
297 def = 0xff;
298 /* def = 0 bw, def = ff color, menu idx 0 = color, idx 1 = bw */
299 pdev->colorfx = v4l2_ctrl_new_std_menu(hdl, &pwc_ctrl_ops,
300 V4L2_CID_COLORFX, 1, 0, def == 0);
301
302 /* autocontour, contour */
303 r = pwc_get_u8_ctrl(pdev, GET_LUM_CTL, AUTO_CONTOUR_FORMATTER, &def);
304 if (r || (def != 0 && def != 0xff))
305 def = 0;
306 cfg = pwc_autocontour_cfg;
307 cfg.def = def == 0;
308 pdev->autocontour = v4l2_ctrl_new_custom(hdl, &cfg, NULL);
309 if (!pdev->autocontour)
310 return hdl->error;
311
312 r = pwc_get_u8_ctrl(pdev, GET_LUM_CTL, PRESET_CONTOUR_FORMATTER, &def);
313 if (r || def > 63)
314 def = 31;
315 cfg = pwc_contour_cfg;
316 cfg.def = def;
317 pdev->contour = v4l2_ctrl_new_custom(hdl, &cfg, NULL);
318
319 v4l2_ctrl_auto_cluster(2, &pdev->autocontour, 0, false);
320
321 /* backlight */
322 r = pwc_get_u8_ctrl(pdev, GET_LUM_CTL,
323 BACK_LIGHT_COMPENSATION_FORMATTER, &def);
324 if (r || (def != 0 && def != 0xff))
325 def = 0;
326 cfg = pwc_backlight_cfg;
327 cfg.name = v4l2_ctrl_get_name(cfg.id);
328 cfg.def = def == 0;
329 pdev->backlight = v4l2_ctrl_new_custom(hdl, &cfg, NULL);
330
331 /* flikker rediction */
332 r = pwc_get_u8_ctrl(pdev, GET_LUM_CTL,
333 FLICKERLESS_MODE_FORMATTER, &def);
334 if (r || (def != 0 && def != 0xff))
335 def = 0;
336 cfg = pwc_flicker_cfg;
337 cfg.name = v4l2_ctrl_get_name(cfg.id);
338 cfg.def = def == 0;
339 pdev->flicker = v4l2_ctrl_new_custom(hdl, &cfg, NULL);
340
341 /* Dynamic noise reduction */
342 r = pwc_get_u8_ctrl(pdev, GET_LUM_CTL,
343 DYNAMIC_NOISE_CONTROL_FORMATTER, &def);
344 if (r || def > 3)
345 def = 2;
346 cfg = pwc_noise_reduction_cfg;
347 cfg.def = def;
348 pdev->noise_reduction = v4l2_ctrl_new_custom(hdl, &cfg, NULL);
349
350 /* Save / Restore User / Factory Settings */
351 pdev->save_user = v4l2_ctrl_new_custom(hdl, &pwc_save_user_cfg, NULL);
352 pdev->restore_user = v4l2_ctrl_new_custom(hdl, &pwc_restore_user_cfg,
353 NULL);
354 if (pdev->restore_user)
355 pdev->restore_user->flags |= V4L2_CTRL_FLAG_UPDATE;
356 pdev->restore_factory = v4l2_ctrl_new_custom(hdl,
357 &pwc_restore_factory_cfg,
358 NULL);
359 if (pdev->restore_factory)
360 pdev->restore_factory->flags |= V4L2_CTRL_FLAG_UPDATE;
361
362 /* Auto White Balance speed & delay */
363 r = pwc_get_u8_ctrl(pdev, GET_CHROM_CTL,
364 AWB_CONTROL_SPEED_FORMATTER, &def);
365 if (r || def < 1 || def > 32)
366 def = 1;
367 cfg = pwc_awb_speed_cfg;
368 cfg.def = def;
369 pdev->awb_speed = v4l2_ctrl_new_custom(hdl, &cfg, NULL);
370
371 r = pwc_get_u8_ctrl(pdev, GET_CHROM_CTL,
372 AWB_CONTROL_DELAY_FORMATTER, &def);
373 if (r || def > 63)
374 def = 0;
375 cfg = pwc_awb_delay_cfg;
376 cfg.def = def;
377 pdev->awb_delay = v4l2_ctrl_new_custom(hdl, &cfg, NULL);
378
379 if (!(pdev->features & FEATURE_MOTOR_PANTILT))
380 return hdl->error;
381
382 /* Motor pan / tilt / reset */
383 pdev->motor_pan = v4l2_ctrl_new_std(hdl, &pwc_ctrl_ops,
384 V4L2_CID_PAN_RELATIVE, -4480, 4480, 64, 0);
385 if (!pdev->motor_pan)
386 return hdl->error;
387 pdev->motor_tilt = v4l2_ctrl_new_std(hdl, &pwc_ctrl_ops,
388 V4L2_CID_TILT_RELATIVE, -1920, 1920, 64, 0);
389 pdev->motor_pan_reset = v4l2_ctrl_new_std(hdl, &pwc_ctrl_ops,
390 V4L2_CID_PAN_RESET, 0, 0, 0, 0);
391 pdev->motor_tilt_reset = v4l2_ctrl_new_std(hdl, &pwc_ctrl_ops,
392 V4L2_CID_TILT_RESET, 0, 0, 0, 0);
393 v4l2_ctrl_cluster(4, &pdev->motor_pan);
394
395 return hdl->error;
396 }
397
398 static void pwc_vidioc_fill_fmt(struct v4l2_format *f,
399 int width, int height, u32 pixfmt)
400 {
401 memset(&f->fmt.pix, 0, sizeof(struct v4l2_pix_format));
402 f->fmt.pix.width = width;
403 f->fmt.pix.height = height;
404 f->fmt.pix.field = V4L2_FIELD_NONE;
405 f->fmt.pix.pixelformat = pixfmt;
406 f->fmt.pix.bytesperline = f->fmt.pix.width;
407 f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.width * 3 / 2;
408 PWC_DEBUG_IOCTL("pwc_vidioc_fill_fmt() "
409 "width=%d, height=%d, bytesperline=%d, sizeimage=%d, pixelformat=%c%c%c%c\n",
410 f->fmt.pix.width,
411 f->fmt.pix.height,
412 f->fmt.pix.bytesperline,
413 f->fmt.pix.sizeimage,
414 (f->fmt.pix.pixelformat)&255,
415 (f->fmt.pix.pixelformat>>8)&255,
416 (f->fmt.pix.pixelformat>>16)&255,
417 (f->fmt.pix.pixelformat>>24)&255);
418 }
419
420 /* ioctl(VIDIOC_TRY_FMT) */
421 static int pwc_vidioc_try_fmt(struct pwc_device *pdev, struct v4l2_format *f)
422 {
423 int size;
424
425 if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) {
426 PWC_DEBUG_IOCTL("Bad video type must be V4L2_BUF_TYPE_VIDEO_CAPTURE\n");
427 return -EINVAL;
428 }
429
430 switch (f->fmt.pix.pixelformat) {
431 case V4L2_PIX_FMT_YUV420:
432 break;
433 case V4L2_PIX_FMT_PWC1:
434 if (DEVICE_USE_CODEC23(pdev->type)) {
435 PWC_DEBUG_IOCTL("codec1 is only supported for old pwc webcam\n");
436 return -EINVAL;
437 }
438 break;
439 case V4L2_PIX_FMT_PWC2:
440 if (DEVICE_USE_CODEC1(pdev->type)) {
441 PWC_DEBUG_IOCTL("codec23 is only supported for new pwc webcam\n");
442 return -EINVAL;
443 }
444 break;
445 default:
446 PWC_DEBUG_IOCTL("Unsupported pixel format\n");
447 return -EINVAL;
448
449 }
450
451 size = pwc_get_size(pdev, f->fmt.pix.width, f->fmt.pix.height);
452 pwc_vidioc_fill_fmt(f,
453 pwc_image_sizes[size][0],
454 pwc_image_sizes[size][1],
455 f->fmt.pix.pixelformat);
456
457 return 0;
458 }
459
460 /* ioctl(VIDIOC_SET_FMT) */
461
462 static int pwc_s_fmt_vid_cap(struct file *file, void *fh, struct v4l2_format *f)
463 {
464 struct pwc_device *pdev = video_drvdata(file);
465 int ret, pixelformat, compression = 0;
466
467 if (pwc_test_n_set_capt_file(pdev, file))
468 return -EBUSY;
469
470 ret = pwc_vidioc_try_fmt(pdev, f);
471 if (ret < 0)
472 return ret;
473
474 pixelformat = f->fmt.pix.pixelformat;
475
476 mutex_lock(&pdev->udevlock);
477 if (!pdev->udev) {
478 ret = -ENODEV;
479 goto leave;
480 }
481
482 if (pdev->iso_init) {
483 ret = -EBUSY;
484 goto leave;
485 }
486
487 PWC_DEBUG_IOCTL("Trying to set format to: width=%d height=%d fps=%d "
488 "format=%c%c%c%c\n",
489 f->fmt.pix.width, f->fmt.pix.height, pdev->vframes,
490 (pixelformat)&255,
491 (pixelformat>>8)&255,
492 (pixelformat>>16)&255,
493 (pixelformat>>24)&255);
494
495 ret = pwc_set_video_mode(pdev, f->fmt.pix.width, f->fmt.pix.height,
496 30, &compression);
497
498 PWC_DEBUG_IOCTL("pwc_set_video_mode(), return=%d\n", ret);
499
500 if (ret == 0) {
501 pdev->pixfmt = pixelformat;
502 pwc_vidioc_fill_fmt(f, pdev->width, pdev->height,
503 pdev->pixfmt);
504 }
505
506 leave:
507 mutex_unlock(&pdev->udevlock);
508 return ret;
509 }
510
511 static int pwc_querycap(struct file *file, void *fh, struct v4l2_capability *cap)
512 {
513 struct pwc_device *pdev = video_drvdata(file);
514
515 if (!pdev->udev)
516 return -ENODEV;
517
518 strcpy(cap->driver, PWC_NAME);
519 strlcpy(cap->card, pdev->vdev.name, sizeof(cap->card));
520 usb_make_path(pdev->udev, cap->bus_info, sizeof(cap->bus_info));
521 cap->capabilities =
522 V4L2_CAP_VIDEO_CAPTURE |
523 V4L2_CAP_STREAMING |
524 V4L2_CAP_READWRITE;
525 return 0;
526 }
527
528 static int pwc_enum_input(struct file *file, void *fh, struct v4l2_input *i)
529 {
530 if (i->index) /* Only one INPUT is supported */
531 return -EINVAL;
532
533 strcpy(i->name, "usb");
534 return 0;
535 }
536
537 static int pwc_g_input(struct file *file, void *fh, unsigned int *i)
538 {
539 *i = 0;
540 return 0;
541 }
542
543 static int pwc_s_input(struct file *file, void *fh, unsigned int i)
544 {
545 return i ? -EINVAL : 0;
546 }
547
548 static int pwc_g_volatile_ctrl_unlocked(struct v4l2_ctrl *ctrl)
549 {
550 struct pwc_device *pdev =
551 container_of(ctrl->handler, struct pwc_device, ctrl_handler);
552 int ret = 0;
553
554 if (!pdev->udev)
555 return -ENODEV;
556
557 switch (ctrl->id) {
558 case V4L2_CID_AUTO_WHITE_BALANCE:
559 if (pdev->color_bal_valid &&
560 (pdev->auto_white_balance->val != awb_auto ||
561 time_before(jiffies,
562 pdev->last_color_bal_update + HZ / 4))) {
563 pdev->red_balance->val = pdev->last_red_balance;
564 pdev->blue_balance->val = pdev->last_blue_balance;
565 break;
566 }
567 ret = pwc_get_u8_ctrl(pdev, GET_STATUS_CTL,
568 READ_RED_GAIN_FORMATTER,
569 &pdev->red_balance->val);
570 if (ret)
571 break;
572 ret = pwc_get_u8_ctrl(pdev, GET_STATUS_CTL,
573 READ_BLUE_GAIN_FORMATTER,
574 &pdev->blue_balance->val);
575 if (ret)
576 break;
577 pdev->last_red_balance = pdev->red_balance->val;
578 pdev->last_blue_balance = pdev->blue_balance->val;
579 pdev->last_color_bal_update = jiffies;
580 pdev->color_bal_valid = true;
581 break;
582 case V4L2_CID_AUTOGAIN:
583 if (pdev->gain_valid && time_before(jiffies,
584 pdev->last_gain_update + HZ / 4)) {
585 pdev->gain->val = pdev->last_gain;
586 break;
587 }
588 ret = pwc_get_u8_ctrl(pdev, GET_STATUS_CTL,
589 READ_AGC_FORMATTER, &pdev->gain->val);
590 if (ret)
591 break;
592 pdev->last_gain = pdev->gain->val;
593 pdev->last_gain_update = jiffies;
594 pdev->gain_valid = true;
595 if (!DEVICE_USE_CODEC3(pdev->type))
596 break;
597 /* Fall through for CODEC3 where autogain also controls expo */
598 case V4L2_CID_EXPOSURE_AUTO:
599 if (pdev->exposure_valid && time_before(jiffies,
600 pdev->last_exposure_update + HZ / 4)) {
601 pdev->exposure->val = pdev->last_exposure;
602 break;
603 }
604 ret = pwc_get_u16_ctrl(pdev, GET_STATUS_CTL,
605 READ_SHUTTER_FORMATTER,
606 &pdev->exposure->val);
607 if (ret)
608 break;
609 pdev->last_exposure = pdev->exposure->val;
610 pdev->last_exposure_update = jiffies;
611 pdev->exposure_valid = true;
612 break;
613 default:
614 ret = -EINVAL;
615 }
616
617 if (ret)
618 PWC_ERROR("g_ctrl %s error %d\n", ctrl->name, ret);
619
620 return ret;
621 }
622
623 static int pwc_g_volatile_ctrl(struct v4l2_ctrl *ctrl)
624 {
625 struct pwc_device *pdev =
626 container_of(ctrl->handler, struct pwc_device, ctrl_handler);
627 int ret;
628
629 mutex_lock(&pdev->udevlock);
630 ret = pwc_g_volatile_ctrl_unlocked(ctrl);
631 mutex_unlock(&pdev->udevlock);
632 return ret;
633 }
634
635 static int pwc_set_awb(struct pwc_device *pdev)
636 {
637 int ret;
638
639 if (pdev->auto_white_balance->is_new) {
640 ret = pwc_set_u8_ctrl(pdev, SET_CHROM_CTL,
641 WB_MODE_FORMATTER,
642 pdev->auto_white_balance->val);
643 if (ret)
644 return ret;
645
646 if (pdev->auto_white_balance->val != awb_manual)
647 pdev->color_bal_valid = false; /* Force cache update */
648
649 /*
650 * If this is a preset, update our red / blue balance values
651 * so that events get generated for the new preset values
652 */
653 if (pdev->auto_white_balance->val == awb_indoor ||
654 pdev->auto_white_balance->val == awb_outdoor ||
655 pdev->auto_white_balance->val == awb_fl)
656 pwc_g_volatile_ctrl_unlocked(pdev->auto_white_balance);
657 }
658 if (pdev->auto_white_balance->val != awb_manual)
659 return 0;
660
661 if (pdev->red_balance->is_new) {
662 ret = pwc_set_u8_ctrl(pdev, SET_CHROM_CTL,
663 PRESET_MANUAL_RED_GAIN_FORMATTER,
664 pdev->red_balance->val);
665 if (ret)
666 return ret;
667 }
668
669 if (pdev->blue_balance->is_new) {
670 ret = pwc_set_u8_ctrl(pdev, SET_CHROM_CTL,
671 PRESET_MANUAL_BLUE_GAIN_FORMATTER,
672 pdev->blue_balance->val);
673 if (ret)
674 return ret;
675 }
676 return 0;
677 }
678
679 /* For CODEC2 models which have separate autogain and auto exposure */
680 static int pwc_set_autogain(struct pwc_device *pdev)
681 {
682 int ret;
683
684 if (pdev->autogain->is_new) {
685 ret = pwc_set_u8_ctrl(pdev, SET_LUM_CTL,
686 AGC_MODE_FORMATTER,
687 pdev->autogain->val ? 0 : 0xff);
688 if (ret)
689 return ret;
690
691 if (pdev->autogain->val)
692 pdev->gain_valid = false; /* Force cache update */
693 }
694
695 if (pdev->autogain->val)
696 return 0;
697
698 if (pdev->gain->is_new) {
699 ret = pwc_set_u8_ctrl(pdev, SET_LUM_CTL,
700 PRESET_AGC_FORMATTER,
701 pdev->gain->val);
702 if (ret)
703 return ret;
704 }
705 return 0;
706 }
707
708 /* For CODEC2 models which have separate autogain and auto exposure */
709 static int pwc_set_exposure_auto(struct pwc_device *pdev)
710 {
711 int ret;
712 int is_auto = pdev->exposure_auto->val == V4L2_EXPOSURE_AUTO;
713
714 if (pdev->exposure_auto->is_new) {
715 ret = pwc_set_u8_ctrl(pdev, SET_LUM_CTL,
716 SHUTTER_MODE_FORMATTER,
717 is_auto ? 0 : 0xff);
718 if (ret)
719 return ret;
720
721 if (is_auto)
722 pdev->exposure_valid = false; /* Force cache update */
723 }
724
725 if (is_auto)
726 return 0;
727
728 if (pdev->exposure->is_new) {
729 ret = pwc_set_u16_ctrl(pdev, SET_LUM_CTL,
730 PRESET_SHUTTER_FORMATTER,
731 pdev->exposure->val);
732 if (ret)
733 return ret;
734 }
735 return 0;
736 }
737
738 /* For CODEC3 models which have autogain controlling both gain and exposure */
739 static int pwc_set_autogain_expo(struct pwc_device *pdev)
740 {
741 int ret;
742
743 if (pdev->autogain->is_new) {
744 ret = pwc_set_u8_ctrl(pdev, SET_LUM_CTL,
745 AGC_MODE_FORMATTER,
746 pdev->autogain->val ? 0 : 0xff);
747 if (ret)
748 return ret;
749
750 if (pdev->autogain->val) {
751 pdev->gain_valid = false; /* Force cache update */
752 pdev->exposure_valid = false; /* Force cache update */
753 }
754 }
755
756 if (pdev->autogain->val)
757 return 0;
758
759 if (pdev->gain->is_new) {
760 ret = pwc_set_u8_ctrl(pdev, SET_LUM_CTL,
761 PRESET_AGC_FORMATTER,
762 pdev->gain->val);
763 if (ret)
764 return ret;
765 }
766
767 if (pdev->exposure->is_new) {
768 ret = pwc_set_u16_ctrl(pdev, SET_LUM_CTL,
769 PRESET_SHUTTER_FORMATTER,
770 pdev->exposure->val);
771 if (ret)
772 return ret;
773 }
774 return 0;
775 }
776
777 static int pwc_set_motor(struct pwc_device *pdev)
778 {
779 int ret;
780 u8 buf[4];
781
782 buf[0] = 0;
783 if (pdev->motor_pan_reset->is_new)
784 buf[0] |= 0x01;
785 if (pdev->motor_tilt_reset->is_new)
786 buf[0] |= 0x02;
787 if (pdev->motor_pan_reset->is_new || pdev->motor_tilt_reset->is_new) {
788 ret = send_control_msg(pdev, SET_MPT_CTL,
789 PT_RESET_CONTROL_FORMATTER, buf, 1);
790 if (ret < 0)
791 return ret;
792 }
793
794 memset(buf, 0, sizeof(buf));
795 if (pdev->motor_pan->is_new) {
796 buf[0] = pdev->motor_pan->val & 0xFF;
797 buf[1] = (pdev->motor_pan->val >> 8);
798 }
799 if (pdev->motor_tilt->is_new) {
800 buf[2] = pdev->motor_tilt->val & 0xFF;
801 buf[3] = (pdev->motor_tilt->val >> 8);
802 }
803 if (pdev->motor_pan->is_new || pdev->motor_tilt->is_new) {
804 ret = send_control_msg(pdev, SET_MPT_CTL,
805 PT_RELATIVE_CONTROL_FORMATTER,
806 buf, sizeof(buf));
807 if (ret < 0)
808 return ret;
809 }
810
811 return 0;
812 }
813
814 static int pwc_s_ctrl(struct v4l2_ctrl *ctrl)
815 {
816 struct pwc_device *pdev =
817 container_of(ctrl->handler, struct pwc_device, ctrl_handler);
818 int ret = 0;
819
820 mutex_lock(&pdev->udevlock);
821
822 if (!pdev->udev) {
823 ret = -ENODEV;
824 goto leave;
825 }
826
827 switch (ctrl->id) {
828 case V4L2_CID_BRIGHTNESS:
829 ret = pwc_set_u8_ctrl(pdev, SET_LUM_CTL,
830 BRIGHTNESS_FORMATTER, ctrl->val);
831 break;
832 case V4L2_CID_CONTRAST:
833 ret = pwc_set_u8_ctrl(pdev, SET_LUM_CTL,
834 CONTRAST_FORMATTER, ctrl->val);
835 break;
836 case V4L2_CID_SATURATION:
837 ret = pwc_set_s8_ctrl(pdev, SET_CHROM_CTL,
838 pdev->saturation_fmt, ctrl->val);
839 break;
840 case V4L2_CID_GAMMA:
841 ret = pwc_set_u8_ctrl(pdev, SET_LUM_CTL,
842 GAMMA_FORMATTER, ctrl->val);
843 break;
844 case V4L2_CID_AUTO_WHITE_BALANCE:
845 ret = pwc_set_awb(pdev);
846 break;
847 case V4L2_CID_AUTOGAIN:
848 if (DEVICE_USE_CODEC2(pdev->type))
849 ret = pwc_set_autogain(pdev);
850 else if (DEVICE_USE_CODEC3(pdev->type))
851 ret = pwc_set_autogain_expo(pdev);
852 else
853 ret = -EINVAL;
854 break;
855 case V4L2_CID_EXPOSURE_AUTO:
856 if (DEVICE_USE_CODEC2(pdev->type))
857 ret = pwc_set_exposure_auto(pdev);
858 else
859 ret = -EINVAL;
860 break;
861 case V4L2_CID_COLORFX:
862 ret = pwc_set_u8_ctrl(pdev, SET_CHROM_CTL,
863 COLOUR_MODE_FORMATTER,
864 ctrl->val ? 0 : 0xff);
865 break;
866 case PWC_CID_CUSTOM(autocontour):
867 if (pdev->autocontour->is_new) {
868 ret = pwc_set_u8_ctrl(pdev, SET_LUM_CTL,
869 AUTO_CONTOUR_FORMATTER,
870 pdev->autocontour->val ? 0 : 0xff);
871 }
872 if (ret == 0 && pdev->contour->is_new) {
873 ret = pwc_set_u8_ctrl(pdev, SET_LUM_CTL,
874 PRESET_CONTOUR_FORMATTER,
875 pdev->contour->val);
876 }
877 break;
878 case V4L2_CID_BACKLIGHT_COMPENSATION:
879 ret = pwc_set_u8_ctrl(pdev, SET_LUM_CTL,
880 BACK_LIGHT_COMPENSATION_FORMATTER,
881 ctrl->val ? 0 : 0xff);
882 break;
883 case V4L2_CID_BAND_STOP_FILTER:
884 ret = pwc_set_u8_ctrl(pdev, SET_LUM_CTL,
885 FLICKERLESS_MODE_FORMATTER,
886 ctrl->val ? 0 : 0xff);
887 break;
888 case PWC_CID_CUSTOM(noise_reduction):
889 ret = pwc_set_u8_ctrl(pdev, SET_LUM_CTL,
890 DYNAMIC_NOISE_CONTROL_FORMATTER,
891 ctrl->val);
892 break;
893 case PWC_CID_CUSTOM(save_user):
894 ret = pwc_button_ctrl(pdev, SAVE_USER_DEFAULTS_FORMATTER);
895 break;
896 case PWC_CID_CUSTOM(restore_user):
897 ret = pwc_button_ctrl(pdev, RESTORE_USER_DEFAULTS_FORMATTER);
898 break;
899 case PWC_CID_CUSTOM(restore_factory):
900 ret = pwc_button_ctrl(pdev,
901 RESTORE_FACTORY_DEFAULTS_FORMATTER);
902 break;
903 case PWC_CID_CUSTOM(awb_speed):
904 ret = pwc_set_u8_ctrl(pdev, SET_CHROM_CTL,
905 AWB_CONTROL_SPEED_FORMATTER,
906 ctrl->val);
907 break;
908 case PWC_CID_CUSTOM(awb_delay):
909 ret = pwc_set_u8_ctrl(pdev, SET_CHROM_CTL,
910 AWB_CONTROL_DELAY_FORMATTER,
911 ctrl->val);
912 break;
913 case V4L2_CID_PAN_RELATIVE:
914 ret = pwc_set_motor(pdev);
915 break;
916 default:
917 ret = -EINVAL;
918 }
919
920 if (ret)
921 PWC_ERROR("s_ctrl %s error %d\n", ctrl->name, ret);
922
923 leave:
924 mutex_unlock(&pdev->udevlock);
925 return ret;
926 }
927
928 static int pwc_enum_fmt_vid_cap(struct file *file, void *fh, struct v4l2_fmtdesc *f)
929 {
930 struct pwc_device *pdev = video_drvdata(file);
931
932 /* We only support two format: the raw format, and YUV */
933 switch (f->index) {
934 case 0:
935 /* RAW format */
936 f->pixelformat = pdev->type <= 646 ? V4L2_PIX_FMT_PWC1 : V4L2_PIX_FMT_PWC2;
937 f->flags = V4L2_FMT_FLAG_COMPRESSED;
938 strlcpy(f->description, "Raw Philips Webcam", sizeof(f->description));
939 break;
940 case 1:
941 f->pixelformat = V4L2_PIX_FMT_YUV420;
942 strlcpy(f->description, "4:2:0, planar, Y-Cb-Cr", sizeof(f->description));
943 break;
944 default:
945 return -EINVAL;
946 }
947 return 0;
948 }
949
950 static int pwc_g_fmt_vid_cap(struct file *file, void *fh, struct v4l2_format *f)
951 {
952 struct pwc_device *pdev = video_drvdata(file);
953
954 if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
955 return -EINVAL;
956
957 mutex_lock(&pdev->udevlock); /* To avoid race with s_fmt */
958 PWC_DEBUG_IOCTL("ioctl(VIDIOC_G_FMT) return size %dx%d\n",
959 pdev->width, pdev->height);
960 pwc_vidioc_fill_fmt(f, pdev->width, pdev->height, pdev->pixfmt);
961 mutex_unlock(&pdev->udevlock);
962 return 0;
963 }
964
965 static int pwc_try_fmt_vid_cap(struct file *file, void *fh, struct v4l2_format *f)
966 {
967 struct pwc_device *pdev = video_drvdata(file);
968
969 return pwc_vidioc_try_fmt(pdev, f);
970 }
971
972 static int pwc_reqbufs(struct file *file, void *fh,
973 struct v4l2_requestbuffers *rb)
974 {
975 struct pwc_device *pdev = video_drvdata(file);
976
977 if (pwc_test_n_set_capt_file(pdev, file))
978 return -EBUSY;
979
980 return vb2_reqbufs(&pdev->vb_queue, rb);
981 }
982
983 static int pwc_querybuf(struct file *file, void *fh, struct v4l2_buffer *buf)
984 {
985 struct pwc_device *pdev = video_drvdata(file);
986
987 return vb2_querybuf(&pdev->vb_queue, buf);
988 }
989
990 static int pwc_qbuf(struct file *file, void *fh, struct v4l2_buffer *buf)
991 {
992 struct pwc_device *pdev = video_drvdata(file);
993
994 if (!pdev->udev)
995 return -ENODEV;
996
997 if (pdev->capt_file != file)
998 return -EBUSY;
999
1000 return vb2_qbuf(&pdev->vb_queue, buf);
1001 }
1002
1003 static int pwc_dqbuf(struct file *file, void *fh, struct v4l2_buffer *buf)
1004 {
1005 struct pwc_device *pdev = video_drvdata(file);
1006
1007 if (!pdev->udev)
1008 return -ENODEV;
1009
1010 if (pdev->capt_file != file)
1011 return -EBUSY;
1012
1013 return vb2_dqbuf(&pdev->vb_queue, buf, file->f_flags & O_NONBLOCK);
1014 }
1015
1016 static int pwc_streamon(struct file *file, void *fh, enum v4l2_buf_type i)
1017 {
1018 struct pwc_device *pdev = video_drvdata(file);
1019
1020 if (!pdev->udev)
1021 return -ENODEV;
1022
1023 if (pdev->capt_file != file)
1024 return -EBUSY;
1025
1026 return vb2_streamon(&pdev->vb_queue, i);
1027 }
1028
1029 static int pwc_streamoff(struct file *file, void *fh, enum v4l2_buf_type i)
1030 {
1031 struct pwc_device *pdev = video_drvdata(file);
1032
1033 if (!pdev->udev)
1034 return -ENODEV;
1035
1036 if (pdev->capt_file != file)
1037 return -EBUSY;
1038
1039 return vb2_streamoff(&pdev->vb_queue, i);
1040 }
1041
1042 static int pwc_enum_framesizes(struct file *file, void *fh,
1043 struct v4l2_frmsizeenum *fsize)
1044 {
1045 struct pwc_device *pdev = video_drvdata(file);
1046 unsigned int i = 0, index = fsize->index;
1047
1048 if (fsize->pixel_format == V4L2_PIX_FMT_YUV420 ||
1049 (fsize->pixel_format == V4L2_PIX_FMT_PWC1 &&
1050 DEVICE_USE_CODEC1(pdev->type)) ||
1051 (fsize->pixel_format == V4L2_PIX_FMT_PWC2 &&
1052 DEVICE_USE_CODEC23(pdev->type))) {
1053 for (i = 0; i < PSZ_MAX; i++) {
1054 if (!(pdev->image_mask & (1UL << i)))
1055 continue;
1056 if (!index--) {
1057 fsize->type = V4L2_FRMSIZE_TYPE_DISCRETE;
1058 fsize->discrete.width = pwc_image_sizes[i][0];
1059 fsize->discrete.height = pwc_image_sizes[i][1];
1060 return 0;
1061 }
1062 }
1063 }
1064 return -EINVAL;
1065 }
1066
1067 static int pwc_enum_frameintervals(struct file *file, void *fh,
1068 struct v4l2_frmivalenum *fival)
1069 {
1070 struct pwc_device *pdev = video_drvdata(file);
1071 int size = -1;
1072 unsigned int i;
1073
1074 for (i = 0; i < PSZ_MAX; i++) {
1075 if (pwc_image_sizes[i][0] == fival->width &&
1076 pwc_image_sizes[i][1] == fival->height) {
1077 size = i;
1078 break;
1079 }
1080 }
1081
1082 /* TODO: Support raw format */
1083 if (size < 0 || fival->pixel_format != V4L2_PIX_FMT_YUV420)
1084 return -EINVAL;
1085
1086 i = pwc_get_fps(pdev, fival->index, size);
1087 if (!i)
1088 return -EINVAL;
1089
1090 fival->type = V4L2_FRMIVAL_TYPE_DISCRETE;
1091 fival->discrete.numerator = 1;
1092 fival->discrete.denominator = i;
1093
1094 return 0;
1095 }
1096
1097 static int pwc_g_parm(struct file *file, void *fh,
1098 struct v4l2_streamparm *parm)
1099 {
1100 struct pwc_device *pdev = video_drvdata(file);
1101
1102 if (parm->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1103 return -EINVAL;
1104
1105 memset(parm, 0, sizeof(*parm));
1106
1107 parm->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1108 parm->parm.capture.readbuffers = MIN_FRAMES;
1109 parm->parm.capture.capability |= V4L2_CAP_TIMEPERFRAME;
1110 parm->parm.capture.timeperframe.denominator = pdev->vframes;
1111 parm->parm.capture.timeperframe.numerator = 1;
1112
1113 return 0;
1114 }
1115
1116 static int pwc_s_parm(struct file *file, void *fh,
1117 struct v4l2_streamparm *parm)
1118 {
1119 struct pwc_device *pdev = video_drvdata(file);
1120 int compression = 0;
1121 int ret, fps;
1122
1123 if (parm->type != V4L2_BUF_TYPE_VIDEO_CAPTURE ||
1124 parm->parm.capture.timeperframe.numerator == 0)
1125 return -EINVAL;
1126
1127 if (pwc_test_n_set_capt_file(pdev, file))
1128 return -EBUSY;
1129
1130 fps = parm->parm.capture.timeperframe.denominator /
1131 parm->parm.capture.timeperframe.numerator;
1132
1133 mutex_lock(&pdev->udevlock);
1134 if (!pdev->udev) {
1135 ret = -ENODEV;
1136 goto leave;
1137 }
1138
1139 if (pdev->iso_init) {
1140 ret = -EBUSY;
1141 goto leave;
1142 }
1143
1144 ret = pwc_set_video_mode(pdev, pdev->width, pdev->height, fps,
1145 &compression);
1146
1147 pwc_g_parm(file, fh, parm);
1148
1149 leave:
1150 mutex_unlock(&pdev->udevlock);
1151 return ret;
1152 }
1153
1154 static int pwc_log_status(struct file *file, void *priv)
1155 {
1156 struct pwc_device *pdev = video_drvdata(file);
1157
1158 v4l2_ctrl_handler_log_status(&pdev->ctrl_handler, PWC_NAME);
1159 return 0;
1160 }
1161
1162 const struct v4l2_ioctl_ops pwc_ioctl_ops = {
1163 .vidioc_querycap = pwc_querycap,
1164 .vidioc_enum_input = pwc_enum_input,
1165 .vidioc_g_input = pwc_g_input,
1166 .vidioc_s_input = pwc_s_input,
1167 .vidioc_enum_fmt_vid_cap = pwc_enum_fmt_vid_cap,
1168 .vidioc_g_fmt_vid_cap = pwc_g_fmt_vid_cap,
1169 .vidioc_s_fmt_vid_cap = pwc_s_fmt_vid_cap,
1170 .vidioc_try_fmt_vid_cap = pwc_try_fmt_vid_cap,
1171 .vidioc_reqbufs = pwc_reqbufs,
1172 .vidioc_querybuf = pwc_querybuf,
1173 .vidioc_qbuf = pwc_qbuf,
1174 .vidioc_dqbuf = pwc_dqbuf,
1175 .vidioc_streamon = pwc_streamon,
1176 .vidioc_streamoff = pwc_streamoff,
1177 .vidioc_log_status = pwc_log_status,
1178 .vidioc_enum_framesizes = pwc_enum_framesizes,
1179 .vidioc_enum_frameintervals = pwc_enum_frameintervals,
1180 .vidioc_g_parm = pwc_g_parm,
1181 .vidioc_s_parm = pwc_s_parm,
1182 };
Linux kernel - Deliverables
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