?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
[cris-mirror.git] / drivers / media / usb / pwc / pwc-v4l.c
blob043b2b97cee6795c9eaa5f52797480f852b3cc95
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 static 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 f->fmt.pix.colorspace = V4L2_COLORSPACE_SRGB;
409 PWC_DEBUG_IOCTL("pwc_vidioc_fill_fmt() 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 f->fmt.pix.pixelformat = V4L2_PIX_FMT_YUV420;
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 f->fmt.pix.pixelformat = V4L2_PIX_FMT_YUV420;
443 }
444 break;
445 default:
446 PWC_DEBUG_IOCTL("Unsupported pixel format\n");
447 f->fmt.pix.pixelformat = V4L2_PIX_FMT_YUV420;
448 }
449
450 size = pwc_get_size(pdev, f->fmt.pix.width, f->fmt.pix.height);
451 pwc_vidioc_fill_fmt(f,
452 pwc_image_sizes[size][0],
453 pwc_image_sizes[size][1],
454 f->fmt.pix.pixelformat);
455
456 return 0;
457 }
458
459 /* ioctl(VIDIOC_SET_FMT) */
460
461 static int pwc_s_fmt_vid_cap(struct file *file, void *fh, struct v4l2_format *f)
462 {
463 struct pwc_device *pdev = video_drvdata(file);
464 int ret, pixelformat, compression = 0;
465
466 ret = pwc_vidioc_try_fmt(pdev, f);
467 if (ret < 0)
468 return ret;
469
470 if (vb2_is_busy(&pdev->vb_queue))
471 return -EBUSY;
472
473 pixelformat = f->fmt.pix.pixelformat;
474
475 PWC_DEBUG_IOCTL("Trying to set format to: width=%d height=%d fps=%d format=%c%c%c%c\n",
476 f->fmt.pix.width, f->fmt.pix.height, pdev->vframes,
477 (pixelformat)&255,
478 (pixelformat>>8)&255,
479 (pixelformat>>16)&255,
480 (pixelformat>>24)&255);
481
482 ret = pwc_set_video_mode(pdev, f->fmt.pix.width, f->fmt.pix.height,
483 pixelformat, 30, &compression, 0);
484
485 PWC_DEBUG_IOCTL("pwc_set_video_mode(), return=%d\n", ret);
486
487 pwc_vidioc_fill_fmt(f, pdev->width, pdev->height, pdev->pixfmt);
488 return ret;
489 }
490
491 static int pwc_querycap(struct file *file, void *fh, struct v4l2_capability *cap)
492 {
493 struct pwc_device *pdev = video_drvdata(file);
494
495 strcpy(cap->driver, PWC_NAME);
496 strlcpy(cap->card, pdev->vdev.name, sizeof(cap->card));
497 usb_make_path(pdev->udev, cap->bus_info, sizeof(cap->bus_info));
498 cap->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING |
499 V4L2_CAP_READWRITE;
500 cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
501 return 0;
502 }
503
504 static int pwc_enum_input(struct file *file, void *fh, struct v4l2_input *i)
505 {
506 if (i->index) /* Only one INPUT is supported */
507 return -EINVAL;
508
509 strlcpy(i->name, "Camera", sizeof(i->name));
510 i->type = V4L2_INPUT_TYPE_CAMERA;
511 return 0;
512 }
513
514 static int pwc_g_input(struct file *file, void *fh, unsigned int *i)
515 {
516 *i = 0;
517 return 0;
518 }
519
520 static int pwc_s_input(struct file *file, void *fh, unsigned int i)
521 {
522 return i ? -EINVAL : 0;
523 }
524
525 static int pwc_g_volatile_ctrl(struct v4l2_ctrl *ctrl)
526 {
527 struct pwc_device *pdev =
528 container_of(ctrl->handler, struct pwc_device, ctrl_handler);
529 int ret = 0;
530
531 switch (ctrl->id) {
532 case V4L2_CID_AUTO_WHITE_BALANCE:
533 if (pdev->color_bal_valid &&
534 (pdev->auto_white_balance->val != awb_auto ||
535 time_before(jiffies,
536 pdev->last_color_bal_update + HZ / 4))) {
537 pdev->red_balance->val = pdev->last_red_balance;
538 pdev->blue_balance->val = pdev->last_blue_balance;
539 break;
540 }
541 ret = pwc_get_u8_ctrl(pdev, GET_STATUS_CTL,
542 READ_RED_GAIN_FORMATTER,
543 &pdev->red_balance->val);
544 if (ret)
545 break;
546 ret = pwc_get_u8_ctrl(pdev, GET_STATUS_CTL,
547 READ_BLUE_GAIN_FORMATTER,
548 &pdev->blue_balance->val);
549 if (ret)
550 break;
551 pdev->last_red_balance = pdev->red_balance->val;
552 pdev->last_blue_balance = pdev->blue_balance->val;
553 pdev->last_color_bal_update = jiffies;
554 pdev->color_bal_valid = true;
555 break;
556 case V4L2_CID_AUTOGAIN:
557 if (pdev->gain_valid && time_before(jiffies,
558 pdev->last_gain_update + HZ / 4)) {
559 pdev->gain->val = pdev->last_gain;
560 break;
561 }
562 ret = pwc_get_u8_ctrl(pdev, GET_STATUS_CTL,
563 READ_AGC_FORMATTER, &pdev->gain->val);
564 if (ret)
565 break;
566 pdev->last_gain = pdev->gain->val;
567 pdev->last_gain_update = jiffies;
568 pdev->gain_valid = true;
569 if (!DEVICE_USE_CODEC3(pdev->type))
570 break;
571 /* For CODEC3 where autogain also controls expo */
572 /* fall through */
573 case V4L2_CID_EXPOSURE_AUTO:
574 if (pdev->exposure_valid && time_before(jiffies,
575 pdev->last_exposure_update + HZ / 4)) {
576 pdev->exposure->val = pdev->last_exposure;
577 break;
578 }
579 ret = pwc_get_u16_ctrl(pdev, GET_STATUS_CTL,
580 READ_SHUTTER_FORMATTER,
581 &pdev->exposure->val);
582 if (ret)
583 break;
584 pdev->last_exposure = pdev->exposure->val;
585 pdev->last_exposure_update = jiffies;
586 pdev->exposure_valid = true;
587 break;
588 default:
589 ret = -EINVAL;
590 }
591
592 if (ret)
593 PWC_ERROR("g_ctrl %s error %d\n", ctrl->name, ret);
594
595 return ret;
596 }
597
598 static int pwc_set_awb(struct pwc_device *pdev)
599 {
600 int ret;
601
602 if (pdev->auto_white_balance->is_new) {
603 ret = pwc_set_u8_ctrl(pdev, SET_CHROM_CTL,
604 WB_MODE_FORMATTER,
605 pdev->auto_white_balance->val);
606 if (ret)
607 return ret;
608
609 if (pdev->auto_white_balance->val != awb_manual)
610 pdev->color_bal_valid = false; /* Force cache update */
611
612 /*
613 * If this is a preset, update our red / blue balance values
614 * so that events get generated for the new preset values
615 */
616 if (pdev->auto_white_balance->val == awb_indoor ||
617 pdev->auto_white_balance->val == awb_outdoor ||
618 pdev->auto_white_balance->val == awb_fl)
619 pwc_g_volatile_ctrl(pdev->auto_white_balance);
620 }
621 if (pdev->auto_white_balance->val != awb_manual)
622 return 0;
623
624 if (pdev->red_balance->is_new) {
625 ret = pwc_set_u8_ctrl(pdev, SET_CHROM_CTL,
626 PRESET_MANUAL_RED_GAIN_FORMATTER,
627 pdev->red_balance->val);
628 if (ret)
629 return ret;
630 }
631
632 if (pdev->blue_balance->is_new) {
633 ret = pwc_set_u8_ctrl(pdev, SET_CHROM_CTL,
634 PRESET_MANUAL_BLUE_GAIN_FORMATTER,
635 pdev->blue_balance->val);
636 if (ret)
637 return ret;
638 }
639 return 0;
640 }
641
642 /* For CODEC2 models which have separate autogain and auto exposure */
643 static int pwc_set_autogain(struct pwc_device *pdev)
644 {
645 int ret;
646
647 if (pdev->autogain->is_new) {
648 ret = pwc_set_u8_ctrl(pdev, SET_LUM_CTL,
649 AGC_MODE_FORMATTER,
650 pdev->autogain->val ? 0 : 0xff);
651 if (ret)
652 return ret;
653
654 if (pdev->autogain->val)
655 pdev->gain_valid = false; /* Force cache update */
656 }
657
658 if (pdev->autogain->val)
659 return 0;
660
661 if (pdev->gain->is_new) {
662 ret = pwc_set_u8_ctrl(pdev, SET_LUM_CTL,
663 PRESET_AGC_FORMATTER,
664 pdev->gain->val);
665 if (ret)
666 return ret;
667 }
668 return 0;
669 }
670
671 /* For CODEC2 models which have separate autogain and auto exposure */
672 static int pwc_set_exposure_auto(struct pwc_device *pdev)
673 {
674 int ret;
675 int is_auto = pdev->exposure_auto->val == V4L2_EXPOSURE_AUTO;
676
677 if (pdev->exposure_auto->is_new) {
678 ret = pwc_set_u8_ctrl(pdev, SET_LUM_CTL,
679 SHUTTER_MODE_FORMATTER,
680 is_auto ? 0 : 0xff);
681 if (ret)
682 return ret;
683
684 if (is_auto)
685 pdev->exposure_valid = false; /* Force cache update */
686 }
687
688 if (is_auto)
689 return 0;
690
691 if (pdev->exposure->is_new) {
692 ret = pwc_set_u16_ctrl(pdev, SET_LUM_CTL,
693 PRESET_SHUTTER_FORMATTER,
694 pdev->exposure->val);
695 if (ret)
696 return ret;
697 }
698 return 0;
699 }
700
701 /* For CODEC3 models which have autogain controlling both gain and exposure */
702 static int pwc_set_autogain_expo(struct pwc_device *pdev)
703 {
704 int ret;
705
706 if (pdev->autogain->is_new) {
707 ret = pwc_set_u8_ctrl(pdev, SET_LUM_CTL,
708 AGC_MODE_FORMATTER,
709 pdev->autogain->val ? 0 : 0xff);
710 if (ret)
711 return ret;
712
713 if (pdev->autogain->val) {
714 pdev->gain_valid = false; /* Force cache update */
715 pdev->exposure_valid = false; /* Force cache update */
716 }
717 }
718
719 if (pdev->autogain->val)
720 return 0;
721
722 if (pdev->gain->is_new) {
723 ret = pwc_set_u8_ctrl(pdev, SET_LUM_CTL,
724 PRESET_AGC_FORMATTER,
725 pdev->gain->val);
726 if (ret)
727 return ret;
728 }
729
730 if (pdev->exposure->is_new) {
731 ret = pwc_set_u16_ctrl(pdev, SET_LUM_CTL,
732 PRESET_SHUTTER_FORMATTER,
733 pdev->exposure->val);
734 if (ret)
735 return ret;
736 }
737 return 0;
738 }
739
740 static int pwc_set_motor(struct pwc_device *pdev)
741 {
742 int ret;
743
744 pdev->ctrl_buf[0] = 0;
745 if (pdev->motor_pan_reset->is_new)
746 pdev->ctrl_buf[0] |= 0x01;
747 if (pdev->motor_tilt_reset->is_new)
748 pdev->ctrl_buf[0] |= 0x02;
749 if (pdev->motor_pan_reset->is_new || pdev->motor_tilt_reset->is_new) {
750 ret = send_control_msg(pdev, SET_MPT_CTL,
751 PT_RESET_CONTROL_FORMATTER,
752 pdev->ctrl_buf, 1);
753 if (ret < 0)
754 return ret;
755 }
756
757 memset(pdev->ctrl_buf, 0, 4);
758 if (pdev->motor_pan->is_new) {
759 pdev->ctrl_buf[0] = pdev->motor_pan->val & 0xFF;
760 pdev->ctrl_buf[1] = (pdev->motor_pan->val >> 8);
761 }
762 if (pdev->motor_tilt->is_new) {
763 pdev->ctrl_buf[2] = pdev->motor_tilt->val & 0xFF;
764 pdev->ctrl_buf[3] = (pdev->motor_tilt->val >> 8);
765 }
766 if (pdev->motor_pan->is_new || pdev->motor_tilt->is_new) {
767 ret = send_control_msg(pdev, SET_MPT_CTL,
768 PT_RELATIVE_CONTROL_FORMATTER,
769 pdev->ctrl_buf, 4);
770 if (ret < 0)
771 return ret;
772 }
773
774 return 0;
775 }
776
777 static int pwc_s_ctrl(struct v4l2_ctrl *ctrl)
778 {
779 struct pwc_device *pdev =
780 container_of(ctrl->handler, struct pwc_device, ctrl_handler);
781 int ret = 0;
782
783 switch (ctrl->id) {
784 case V4L2_CID_BRIGHTNESS:
785 ret = pwc_set_u8_ctrl(pdev, SET_LUM_CTL,
786 BRIGHTNESS_FORMATTER, ctrl->val);
787 break;
788 case V4L2_CID_CONTRAST:
789 ret = pwc_set_u8_ctrl(pdev, SET_LUM_CTL,
790 CONTRAST_FORMATTER, ctrl->val);
791 break;
792 case V4L2_CID_SATURATION:
793 ret = pwc_set_s8_ctrl(pdev, SET_CHROM_CTL,
794 pdev->saturation_fmt, ctrl->val);
795 break;
796 case V4L2_CID_GAMMA:
797 ret = pwc_set_u8_ctrl(pdev, SET_LUM_CTL,
798 GAMMA_FORMATTER, ctrl->val);
799 break;
800 case V4L2_CID_AUTO_WHITE_BALANCE:
801 ret = pwc_set_awb(pdev);
802 break;
803 case V4L2_CID_AUTOGAIN:
804 if (DEVICE_USE_CODEC2(pdev->type))
805 ret = pwc_set_autogain(pdev);
806 else if (DEVICE_USE_CODEC3(pdev->type))
807 ret = pwc_set_autogain_expo(pdev);
808 else
809 ret = -EINVAL;
810 break;
811 case V4L2_CID_EXPOSURE_AUTO:
812 if (DEVICE_USE_CODEC2(pdev->type))
813 ret = pwc_set_exposure_auto(pdev);
814 else
815 ret = -EINVAL;
816 break;
817 case V4L2_CID_COLORFX:
818 ret = pwc_set_u8_ctrl(pdev, SET_CHROM_CTL,
819 COLOUR_MODE_FORMATTER,
820 ctrl->val ? 0 : 0xff);
821 break;
822 case PWC_CID_CUSTOM(autocontour):
823 if (pdev->autocontour->is_new) {
824 ret = pwc_set_u8_ctrl(pdev, SET_LUM_CTL,
825 AUTO_CONTOUR_FORMATTER,
826 pdev->autocontour->val ? 0 : 0xff);
827 }
828 if (ret == 0 && pdev->contour->is_new) {
829 ret = pwc_set_u8_ctrl(pdev, SET_LUM_CTL,
830 PRESET_CONTOUR_FORMATTER,
831 pdev->contour->val);
832 }
833 break;
834 case V4L2_CID_BACKLIGHT_COMPENSATION:
835 ret = pwc_set_u8_ctrl(pdev, SET_LUM_CTL,
836 BACK_LIGHT_COMPENSATION_FORMATTER,
837 ctrl->val ? 0 : 0xff);
838 break;
839 case V4L2_CID_BAND_STOP_FILTER:
840 ret = pwc_set_u8_ctrl(pdev, SET_LUM_CTL,
841 FLICKERLESS_MODE_FORMATTER,
842 ctrl->val ? 0 : 0xff);
843 break;
844 case PWC_CID_CUSTOM(noise_reduction):
845 ret = pwc_set_u8_ctrl(pdev, SET_LUM_CTL,
846 DYNAMIC_NOISE_CONTROL_FORMATTER,
847 ctrl->val);
848 break;
849 case PWC_CID_CUSTOM(save_user):
850 ret = pwc_button_ctrl(pdev, SAVE_USER_DEFAULTS_FORMATTER);
851 break;
852 case PWC_CID_CUSTOM(restore_user):
853 ret = pwc_button_ctrl(pdev, RESTORE_USER_DEFAULTS_FORMATTER);
854 break;
855 case PWC_CID_CUSTOM(restore_factory):
856 ret = pwc_button_ctrl(pdev,
857 RESTORE_FACTORY_DEFAULTS_FORMATTER);
858 break;
859 case PWC_CID_CUSTOM(awb_speed):
860 ret = pwc_set_u8_ctrl(pdev, SET_CHROM_CTL,
861 AWB_CONTROL_SPEED_FORMATTER,
862 ctrl->val);
863 break;
864 case PWC_CID_CUSTOM(awb_delay):
865 ret = pwc_set_u8_ctrl(pdev, SET_CHROM_CTL,
866 AWB_CONTROL_DELAY_FORMATTER,
867 ctrl->val);
868 break;
869 case V4L2_CID_PAN_RELATIVE:
870 ret = pwc_set_motor(pdev);
871 break;
872 default:
873 ret = -EINVAL;
874 }
875
876 if (ret)
877 PWC_ERROR("s_ctrl %s error %d\n", ctrl->name, ret);
878
879 return ret;
880 }
881
882 static int pwc_enum_fmt_vid_cap(struct file *file, void *fh, struct v4l2_fmtdesc *f)
883 {
884 struct pwc_device *pdev = video_drvdata(file);
885
886 /* We only support two format: the raw format, and YUV */
887 switch (f->index) {
888 case 0:
889 /* RAW format */
890 f->pixelformat = pdev->type <= 646 ? V4L2_PIX_FMT_PWC1 : V4L2_PIX_FMT_PWC2;
891 f->flags = V4L2_FMT_FLAG_COMPRESSED;
892 strlcpy(f->description, "Raw Philips Webcam", sizeof(f->description));
893 break;
894 case 1:
895 f->pixelformat = V4L2_PIX_FMT_YUV420;
896 strlcpy(f->description, "4:2:0, planar, Y-Cb-Cr", sizeof(f->description));
897 break;
898 default:
899 return -EINVAL;
900 }
901 return 0;
902 }
903
904 static int pwc_g_fmt_vid_cap(struct file *file, void *fh, struct v4l2_format *f)
905 {
906 struct pwc_device *pdev = video_drvdata(file);
907
908 if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
909 return -EINVAL;
910
911 PWC_DEBUG_IOCTL("ioctl(VIDIOC_G_FMT) return size %dx%d\n",
912 pdev->width, pdev->height);
913 pwc_vidioc_fill_fmt(f, pdev->width, pdev->height, pdev->pixfmt);
914 return 0;
915 }
916
917 static int pwc_try_fmt_vid_cap(struct file *file, void *fh, struct v4l2_format *f)
918 {
919 struct pwc_device *pdev = video_drvdata(file);
920
921 return pwc_vidioc_try_fmt(pdev, f);
922 }
923
924 static int pwc_enum_framesizes(struct file *file, void *fh,
925 struct v4l2_frmsizeenum *fsize)
926 {
927 struct pwc_device *pdev = video_drvdata(file);
928 unsigned int i = 0, index = fsize->index;
929
930 if (fsize->pixel_format == V4L2_PIX_FMT_YUV420 ||
931 (fsize->pixel_format == V4L2_PIX_FMT_PWC1 &&
932 DEVICE_USE_CODEC1(pdev->type)) ||
933 (fsize->pixel_format == V4L2_PIX_FMT_PWC2 &&
934 DEVICE_USE_CODEC23(pdev->type))) {
935 for (i = 0; i < PSZ_MAX; i++) {
936 if (!(pdev->image_mask & (1UL << i)))
937 continue;
938 if (!index--) {
939 fsize->type = V4L2_FRMSIZE_TYPE_DISCRETE;
940 fsize->discrete.width = pwc_image_sizes[i][0];
941 fsize->discrete.height = pwc_image_sizes[i][1];
942 return 0;
943 }
944 }
945 }
946 return -EINVAL;
947 }
948
949 static int pwc_enum_frameintervals(struct file *file, void *fh,
950 struct v4l2_frmivalenum *fival)
951 {
952 struct pwc_device *pdev = video_drvdata(file);
953 int size = -1;
954 unsigned int i;
955
956 for (i = 0; i < PSZ_MAX; i++) {
957 if (pwc_image_sizes[i][0] == fival->width &&
958 pwc_image_sizes[i][1] == fival->height) {
959 size = i;
960 break;
961 }
962 }
963
964 /* TODO: Support raw format */
965 if (size < 0 || fival->pixel_format != V4L2_PIX_FMT_YUV420)
966 return -EINVAL;
967
968 i = pwc_get_fps(pdev, fival->index, size);
969 if (!i)
970 return -EINVAL;
971
972 fival->type = V4L2_FRMIVAL_TYPE_DISCRETE;
973 fival->discrete.numerator = 1;
974 fival->discrete.denominator = i;
975
976 return 0;
977 }
978
979 static int pwc_g_parm(struct file *file, void *fh,
980 struct v4l2_streamparm *parm)
981 {
982 struct pwc_device *pdev = video_drvdata(file);
983
984 if (parm->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
985 return -EINVAL;
986
987 memset(parm, 0, sizeof(*parm));
988
989 parm->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
990 parm->parm.capture.readbuffers = MIN_FRAMES;
991 parm->parm.capture.capability |= V4L2_CAP_TIMEPERFRAME;
992 parm->parm.capture.timeperframe.denominator = pdev->vframes;
993 parm->parm.capture.timeperframe.numerator = 1;
994
995 return 0;
996 }
997
998 static int pwc_s_parm(struct file *file, void *fh,
999 struct v4l2_streamparm *parm)
1000 {
1001 struct pwc_device *pdev = video_drvdata(file);
1002 int compression = 0;
1003 int ret, fps;
1004
1005 if (parm->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1006 return -EINVAL;
1007
1008 /* If timeperframe == 0, then reset the framerate to the nominal value.
1009 We pick a high framerate here, and let pwc_set_video_mode() figure
1010 out the best match. */
1011 if (parm->parm.capture.timeperframe.numerator == 0 ||
1012 parm->parm.capture.timeperframe.denominator == 0)
1013 fps = 30;
1014 else
1015 fps = parm->parm.capture.timeperframe.denominator /
1016 parm->parm.capture.timeperframe.numerator;
1017
1018 if (vb2_is_busy(&pdev->vb_queue))
1019 return -EBUSY;
1020
1021 ret = pwc_set_video_mode(pdev, pdev->width, pdev->height, pdev->pixfmt,
1022 fps, &compression, 0);
1023
1024 pwc_g_parm(file, fh, parm);
1025
1026 return ret;
1027 }
1028
1029 const struct v4l2_ioctl_ops pwc_ioctl_ops = {
1030 .vidioc_querycap = pwc_querycap,
1031 .vidioc_enum_input = pwc_enum_input,
1032 .vidioc_g_input = pwc_g_input,
1033 .vidioc_s_input = pwc_s_input,
1034 .vidioc_enum_fmt_vid_cap = pwc_enum_fmt_vid_cap,
1035 .vidioc_g_fmt_vid_cap = pwc_g_fmt_vid_cap,
1036 .vidioc_s_fmt_vid_cap = pwc_s_fmt_vid_cap,
1037 .vidioc_try_fmt_vid_cap = pwc_try_fmt_vid_cap,
1038 .vidioc_reqbufs = vb2_ioctl_reqbufs,
1039 .vidioc_querybuf = vb2_ioctl_querybuf,
1040 .vidioc_qbuf = vb2_ioctl_qbuf,
1041 .vidioc_dqbuf = vb2_ioctl_dqbuf,
1042 .vidioc_streamon = vb2_ioctl_streamon,
1043 .vidioc_streamoff = vb2_ioctl_streamoff,
1044 .vidioc_log_status = v4l2_ctrl_log_status,
1045 .vidioc_enum_framesizes = pwc_enum_framesizes,
1046 .vidioc_enum_frameintervals = pwc_enum_frameintervals,
1047 .vidioc_g_parm = pwc_g_parm,
1048 .vidioc_s_parm = pwc_s_parm,
1049 .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
1050 .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
1051 };
CRIS linux kernel tree