1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /* Driver for Philips webcam
3 Functions that send various control messages to the webcam, including
4 video modes.
5 (C) 1999-2003 Nemosoft Unv.
6 (C) 2004-2006 Luc Saillard (luc@saillard.org)
7 (C) 2011 Hans de Goede <hdegoede@redhat.com>
8
9 NOTE: this version of pwc is an unofficial (modified) release of pwc & pcwx
10 driver and thus may have bugs that are not present in the original version.
11 Please send bug reports and support requests to <luc@saillard.org>.
12
13 NOTE: this version of pwc is an unofficial (modified) release of pwc & pcwx
14 driver and thus may have bugs that are not present in the original version.
15 Please send bug reports and support requests to <luc@saillard.org>.
16 The decompression routines have been implemented by reverse-engineering the
17 Nemosoft binary pwcx module. Caveat emptor.
18
19 */
20
21 /*
22 Changes
23 2001/08/03 Alvarado Added methods for changing white balance and
24 red/green gains
25 */
26
27 /* Control functions for the cam; brightness, contrast, video mode, etc. */
28
29 #ifdef __KERNEL__
30 #include <linux/uaccess.h>
31 #endif
32 #include <asm/errno.h>
33
34 #include "pwc.h"
35 #include "pwc-kiara.h"
36 #include "pwc-timon.h"
37 #include "pwc-dec1.h"
38 #include "pwc-dec23.h"
39
40 /* Selectors for status controls used only in this file */
41 #define GET_STATUS_B00 0x0B00
42 #define SENSOR_TYPE_FORMATTER1 0x0C00
43 #define GET_STATUS_3000 0x3000
44 #define READ_RAW_Y_MEAN_FORMATTER 0x3100
45 #define SET_POWER_SAVE_MODE_FORMATTER 0x3200
46 #define MIRROR_IMAGE_FORMATTER 0x3300
47 #define LED_FORMATTER 0x3400
48 #define LOWLIGHT 0x3500
49 #define GET_STATUS_3600 0x3600
50 #define SENSOR_TYPE_FORMATTER2 0x3700
51 #define GET_STATUS_3800 0x3800
52 #define GET_STATUS_4000 0x4000
53 #define GET_STATUS_4100 0x4100 /* Get */
54 #define CTL_STATUS_4200 0x4200 /* [GS] 1 */
55
56 /* Formatters for the Video Endpoint controls [GS]ET_EP_STREAM_CTL */
57 #define VIDEO_OUTPUT_CONTROL_FORMATTER 0x0100
58
59 static const char *size2name[PSZ_MAX] =
60 {
61 "subQCIF",
62 "QSIF",
63 "QCIF",
64 "SIF",
65 "CIF",
66 "VGA",
67 };
68
69 /********/
70
71 /* Entries for the Nala (645/646) camera; the Nala doesn't have compression
72 preferences, so you either get compressed or non-compressed streams.
73
74 An alternate value of 0 means this mode is not available at all.
75 */
76
77 #define PWC_FPS_MAX_NALA 8
78
79 struct Nala_table_entry {
80 char alternate; /* USB alternate setting */
81 int compressed; /* Compressed yes/no */
82
83 unsigned char mode[3]; /* precomputed mode table */
84 };
85
86 static unsigned int Nala_fps_vector[PWC_FPS_MAX_NALA] = { 4, 5, 7, 10, 12, 15, 20, 24 };
87
88 static struct Nala_table_entry Nala_table[PSZ_MAX][PWC_FPS_MAX_NALA] =
89 {
90 #include "pwc-nala.h"
91 };
92
93 /****************************************************************************/
94
recv_control_msg(struct pwc_device * pdev,u8 request,u16 value,int recv_count)95 static int recv_control_msg(struct pwc_device *pdev,
96 u8 request, u16 value, int recv_count)
97 {
98 int rc;
99
100 rc = usb_control_msg(pdev->udev, usb_rcvctrlpipe(pdev->udev, 0),
101 request,
102 USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
103 value, pdev->vcinterface,
104 pdev->ctrl_buf, recv_count, USB_CTRL_GET_TIMEOUT);
105 if (rc < 0)
106 PWC_ERROR("recv_control_msg error %d req %02x val %04x\n",
107 rc, request, value);
108 return rc;
109 }
110
send_video_command(struct pwc_device * pdev,int index,const unsigned char * buf,int buflen)111 static inline int send_video_command(struct pwc_device *pdev,
112 int index, const unsigned char *buf, int buflen)
113 {
114 int rc;
115
116 memcpy(pdev->ctrl_buf, buf, buflen);
117
118 rc = usb_control_msg(pdev->udev, usb_sndctrlpipe(pdev->udev, 0),
119 SET_EP_STREAM_CTL,
120 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
121 VIDEO_OUTPUT_CONTROL_FORMATTER, index,
122 pdev->ctrl_buf, buflen, USB_CTRL_SET_TIMEOUT);
123 if (rc >= 0)
124 memcpy(pdev->cmd_buf, buf, buflen);
125 else
126 PWC_ERROR("send_video_command error %d\n", rc);
127
128 return rc;
129 }
130
send_control_msg(struct pwc_device * pdev,u8 request,u16 value,void * buf,int buflen)131 int send_control_msg(struct pwc_device *pdev,
132 u8 request, u16 value, void *buf, int buflen)
133 {
134 return usb_control_msg(pdev->udev, usb_sndctrlpipe(pdev->udev, 0),
135 request,
136 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
137 value, pdev->vcinterface,
138 buf, buflen, USB_CTRL_SET_TIMEOUT);
139 }
140
set_video_mode_Nala(struct pwc_device * pdev,int size,int pixfmt,int frames,int * compression,int send_to_cam)141 static int set_video_mode_Nala(struct pwc_device *pdev, int size, int pixfmt,
142 int frames, int *compression, int send_to_cam)
143 {
144 int fps, ret = 0;
145 struct Nala_table_entry *pEntry;
146 int frames2frames[31] =
147 { /* closest match of framerate */
148 0, 0, 0, 0, 4, /* 0-4 */
149 5, 5, 7, 7, 10, /* 5-9 */
150 10, 10, 12, 12, 15, /* 10-14 */
151 15, 15, 15, 20, 20, /* 15-19 */
152 20, 20, 20, 24, 24, /* 20-24 */
153 24, 24, 24, 24, 24, /* 25-29 */
154 24 /* 30 */
155 };
156 int frames2table[31] =
157 { 0, 0, 0, 0, 0, /* 0-4 */
158 1, 1, 1, 2, 2, /* 5-9 */
159 3, 3, 4, 4, 4, /* 10-14 */
160 5, 5, 5, 5, 5, /* 15-19 */
161 6, 6, 6, 6, 7, /* 20-24 */
162 7, 7, 7, 7, 7, /* 25-29 */
163 7 /* 30 */
164 };
165
166 if (size < 0 || size > PSZ_CIF)
167 return -EINVAL;
168 if (frames < 4)
169 frames = 4;
170 else if (size > PSZ_QCIF && frames > 15)
171 frames = 15;
172 else if (frames > 25)
173 frames = 25;
174 frames = frames2frames[frames];
175 fps = frames2table[frames];
176 pEntry = &Nala_table[size][fps];
177 if (pEntry->alternate == 0)
178 return -EINVAL;
179
180 if (send_to_cam)
181 ret = send_video_command(pdev, pdev->vendpoint,
182 pEntry->mode, 3);
183 if (ret < 0)
184 return ret;
185
186 if (pEntry->compressed && pixfmt == V4L2_PIX_FMT_YUV420)
187 pwc_dec1_init(pdev, pEntry->mode);
188
189 /* Set various parameters */
190 pdev->pixfmt = pixfmt;
191 pdev->vframes = frames;
192 pdev->valternate = pEntry->alternate;
193 pdev->width = pwc_image_sizes[size][0];
194 pdev->height = pwc_image_sizes[size][1];
195 pdev->frame_size = (pdev->width * pdev->height * 3) / 2;
196 if (pEntry->compressed) {
197 if (pdev->release < 5) { /* 4 fold compression */
198 pdev->vbandlength = 528;
199 pdev->frame_size /= 4;
200 }
201 else {
202 pdev->vbandlength = 704;
203 pdev->frame_size /= 3;
204 }
205 }
206 else
207 pdev->vbandlength = 0;
208
209 /* Let pwc-if.c:isoc_init know we don't support higher compression */
210 *compression = 3;
211
212 return 0;
213 }
214
215
set_video_mode_Timon(struct pwc_device * pdev,int size,int pixfmt,int frames,int * compression,int send_to_cam)216 static int set_video_mode_Timon(struct pwc_device *pdev, int size, int pixfmt,
217 int frames, int *compression, int send_to_cam)
218 {
219 const struct Timon_table_entry *pChoose;
220 int fps, ret = 0;
221
222 if (size >= PSZ_MAX || *compression < 0 || *compression > 3)
223 return -EINVAL;
224 if (frames < 5)
225 frames = 5;
226 else if (size == PSZ_VGA && frames > 15)
227 frames = 15;
228 else if (frames > 30)
229 frames = 30;
230 fps = (frames / 5) - 1;
231
232 /* Find a supported framerate with progressively higher compression */
233 do {
234 pChoose = &Timon_table[size][fps][*compression];
235 if (pChoose->alternate != 0)
236 break;
237 (*compression)++;
238 } while (*compression <= 3);
239
240 if (pChoose->alternate == 0)
241 return -ENOENT; /* Not supported. */
242
243 if (send_to_cam)
244 ret = send_video_command(pdev, pdev->vendpoint,
245 pChoose->mode, 13);
246 if (ret < 0)
247 return ret;
248
249 if (pChoose->bandlength > 0 && pixfmt == V4L2_PIX_FMT_YUV420)
250 pwc_dec23_init(pdev, pChoose->mode);
251
252 /* Set various parameters */
253 pdev->pixfmt = pixfmt;
254 pdev->vframes = (fps + 1) * 5;
255 pdev->valternate = pChoose->alternate;
256 pdev->width = pwc_image_sizes[size][0];
257 pdev->height = pwc_image_sizes[size][1];
258 pdev->vbandlength = pChoose->bandlength;
259 if (pChoose->bandlength > 0)
260 pdev->frame_size = (pChoose->bandlength * pdev->height) / 4;
261 else
262 pdev->frame_size = (pdev->width * pdev->height * 12) / 8;
263 return 0;
264 }
265
266
set_video_mode_Kiara(struct pwc_device * pdev,int size,int pixfmt,int frames,int * compression,int send_to_cam)267 static int set_video_mode_Kiara(struct pwc_device *pdev, int size, int pixfmt,
268 int frames, int *compression, int send_to_cam)
269 {
270 const struct Kiara_table_entry *pChoose;
271 int fps, ret = 0;
272
273 if (size >= PSZ_MAX || *compression < 0 || *compression > 3)
274 return -EINVAL;
275 if (frames < 5)
276 frames = 5;
277 else if (size == PSZ_VGA && frames > 15)
278 frames = 15;
279 else if (frames > 30)
280 frames = 30;
281 fps = (frames / 5) - 1;
282
283 /* Find a supported framerate with progressively higher compression */
284 do {
285 pChoose = &Kiara_table[size][fps][*compression];
286 if (pChoose->alternate != 0)
287 break;
288 (*compression)++;
289 } while (*compression <= 3);
290
291 if (pChoose->alternate == 0)
292 return -ENOENT; /* Not supported. */
293
294 /* Firmware bug: video endpoint is 5, but commands are sent to endpoint 4 */
295 if (send_to_cam)
296 ret = send_video_command(pdev, 4, pChoose->mode, 12);
297 if (ret < 0)
298 return ret;
299
300 if (pChoose->bandlength > 0 && pixfmt == V4L2_PIX_FMT_YUV420)
301 pwc_dec23_init(pdev, pChoose->mode);
302
303 /* All set and go */
304 pdev->pixfmt = pixfmt;
305 pdev->vframes = (fps + 1) * 5;
306 pdev->valternate = pChoose->alternate;
307 pdev->width = pwc_image_sizes[size][0];
308 pdev->height = pwc_image_sizes[size][1];
309 pdev->vbandlength = pChoose->bandlength;
310 if (pdev->vbandlength > 0)
311 pdev->frame_size = (pdev->vbandlength * pdev->height) / 4;
312 else
313 pdev->frame_size = (pdev->width * pdev->height * 12) / 8;
314 PWC_TRACE("frame_size=%d, vframes=%d, vsize=%d, vbandlength=%d\n",
315 pdev->frame_size, pdev->vframes, size, pdev->vbandlength);
316 return 0;
317 }
318
pwc_set_video_mode(struct pwc_device * pdev,int width,int height,int pixfmt,int frames,int * compression,int send_to_cam)319 int pwc_set_video_mode(struct pwc_device *pdev, int width, int height,
320 int pixfmt, int frames, int *compression, int send_to_cam)
321 {
322 int ret, size;
323
324 PWC_DEBUG_FLOW("set_video_mode(%dx%d @ %d, pixfmt %08x).\n",
325 width, height, frames, pixfmt);
326 size = pwc_get_size(pdev, width, height);
327 PWC_TRACE("decode_size = %d.\n", size);
328
329 if (DEVICE_USE_CODEC1(pdev->type)) {
330 ret = set_video_mode_Nala(pdev, size, pixfmt, frames,
331 compression, send_to_cam);
332 } else if (DEVICE_USE_CODEC3(pdev->type)) {
333 ret = set_video_mode_Kiara(pdev, size, pixfmt, frames,
334 compression, send_to_cam);
335 } else {
336 ret = set_video_mode_Timon(pdev, size, pixfmt, frames,
337 compression, send_to_cam);
338 }
339 if (ret < 0) {
340 PWC_ERROR("Failed to set video mode %s@%d fps; return code = %d\n", size2name[size], frames, ret);
341 return ret;
342 }
343 pdev->frame_total_size = pdev->frame_size + pdev->frame_header_size + pdev->frame_trailer_size;
344 PWC_DEBUG_SIZE("Set resolution to %dx%d\n", pdev->width, pdev->height);
345 return 0;
346 }
347
pwc_get_fps_Nala(struct pwc_device * pdev,unsigned int index,unsigned int size)348 static unsigned int pwc_get_fps_Nala(struct pwc_device *pdev, unsigned int index, unsigned int size)
349 {
350 unsigned int i;
351
352 for (i = 0; i < PWC_FPS_MAX_NALA; i++) {
353 if (Nala_table[size][i].alternate) {
354 if (index--==0) return Nala_fps_vector[i];
355 }
356 }
357 return 0;
358 }
359
pwc_get_fps_Kiara(struct pwc_device * pdev,unsigned int index,unsigned int size)360 static unsigned int pwc_get_fps_Kiara(struct pwc_device *pdev, unsigned int index, unsigned int size)
361 {
362 unsigned int i;
363
364 for (i = 0; i < PWC_FPS_MAX_KIARA; i++) {
365 if (Kiara_table[size][i][3].alternate) {
366 if (index--==0) return Kiara_fps_vector[i];
367 }
368 }
369 return 0;
370 }
371
pwc_get_fps_Timon(struct pwc_device * pdev,unsigned int index,unsigned int size)372 static unsigned int pwc_get_fps_Timon(struct pwc_device *pdev, unsigned int index, unsigned int size)
373 {
374 unsigned int i;
375
376 for (i=0; i < PWC_FPS_MAX_TIMON; i++) {
377 if (Timon_table[size][i][3].alternate) {
378 if (index--==0) return Timon_fps_vector[i];
379 }
380 }
381 return 0;
382 }
383
pwc_get_fps(struct pwc_device * pdev,unsigned int index,unsigned int size)384 unsigned int pwc_get_fps(struct pwc_device *pdev, unsigned int index, unsigned int size)
385 {
386 unsigned int ret;
387
388 if (DEVICE_USE_CODEC1(pdev->type)) {
389 ret = pwc_get_fps_Nala(pdev, index, size);
390
391 } else if (DEVICE_USE_CODEC3(pdev->type)) {
392 ret = pwc_get_fps_Kiara(pdev, index, size);
393
394 } else {
395 ret = pwc_get_fps_Timon(pdev, index, size);
396 }
397
398 return ret;
399 }
400
pwc_get_u8_ctrl(struct pwc_device * pdev,u8 request,u16 value,int * data)401 int pwc_get_u8_ctrl(struct pwc_device *pdev, u8 request, u16 value, int *data)
402 {
403 int ret;
404
405 ret = recv_control_msg(pdev, request, value, 1);
406 if (ret < 0)
407 return ret;
408
409 *data = pdev->ctrl_buf[0];
410 return 0;
411 }
412
pwc_set_u8_ctrl(struct pwc_device * pdev,u8 request,u16 value,u8 data)413 int pwc_set_u8_ctrl(struct pwc_device *pdev, u8 request, u16 value, u8 data)
414 {
415 int ret;
416
417 pdev->ctrl_buf[0] = data;
418 ret = send_control_msg(pdev, request, value, pdev->ctrl_buf, 1);
419 if (ret < 0)
420 return ret;
421
422 return 0;
423 }
424
pwc_get_s8_ctrl(struct pwc_device * pdev,u8 request,u16 value,int * data)425 int pwc_get_s8_ctrl(struct pwc_device *pdev, u8 request, u16 value, int *data)
426 {
427 int ret;
428
429 ret = recv_control_msg(pdev, request, value, 1);
430 if (ret < 0)
431 return ret;
432
433 *data = ((s8 *)pdev->ctrl_buf)[0];
434 return 0;
435 }
436
pwc_get_u16_ctrl(struct pwc_device * pdev,u8 request,u16 value,int * data)437 int pwc_get_u16_ctrl(struct pwc_device *pdev, u8 request, u16 value, int *data)
438 {
439 int ret;
440
441 ret = recv_control_msg(pdev, request, value, 2);
442 if (ret < 0)
443 return ret;
444
445 *data = (pdev->ctrl_buf[1] << 8) | pdev->ctrl_buf[0];
446 return 0;
447 }
448
pwc_set_u16_ctrl(struct pwc_device * pdev,u8 request,u16 value,u16 data)449 int pwc_set_u16_ctrl(struct pwc_device *pdev, u8 request, u16 value, u16 data)
450 {
451 int ret;
452
453 pdev->ctrl_buf[0] = data & 0xff;
454 pdev->ctrl_buf[1] = data >> 8;
455 ret = send_control_msg(pdev, request, value, pdev->ctrl_buf, 2);
456 if (ret < 0)
457 return ret;
458
459 return 0;
460 }
461
pwc_button_ctrl(struct pwc_device * pdev,u16 value)462 int pwc_button_ctrl(struct pwc_device *pdev, u16 value)
463 {
464 int ret;
465
466 ret = send_control_msg(pdev, SET_STATUS_CTL, value, NULL, 0);
467 if (ret < 0)
468 return ret;
469
470 return 0;
471 }
472
473 /* POWER */
pwc_camera_power(struct pwc_device * pdev,int power)474 void pwc_camera_power(struct pwc_device *pdev, int power)
475 {
476 int r;
477
478 if (!pdev->power_save)
479 return;
480
481 if (pdev->type < 675 || (pdev->type < 730 && pdev->release < 6))
482 return; /* Not supported by Nala or Timon < release 6 */
483
484 if (power)
485 pdev->ctrl_buf[0] = 0x00; /* active */
486 else
487 pdev->ctrl_buf[0] = 0xFF; /* power save */
488 r = send_control_msg(pdev, SET_STATUS_CTL,
489 SET_POWER_SAVE_MODE_FORMATTER, pdev->ctrl_buf, 1);
490 if (r < 0)
491 PWC_ERROR("Failed to power %s camera (%d)\n",
492 power ? "on" : "off", r);
493 }
494
pwc_set_leds(struct pwc_device * pdev,int on_value,int off_value)495 int pwc_set_leds(struct pwc_device *pdev, int on_value, int off_value)
496 {
497 int r;
498
499 if (pdev->type < 730)
500 return 0;
501 on_value /= 100;
502 off_value /= 100;
503 if (on_value < 0)
504 on_value = 0;
505 if (on_value > 0xff)
506 on_value = 0xff;
507 if (off_value < 0)
508 off_value = 0;
509 if (off_value > 0xff)
510 off_value = 0xff;
511
512 pdev->ctrl_buf[0] = on_value;
513 pdev->ctrl_buf[1] = off_value;
514
515 r = send_control_msg(pdev,
516 SET_STATUS_CTL, LED_FORMATTER, pdev->ctrl_buf, 2);
517 if (r < 0)
518 PWC_ERROR("Failed to set LED on/off time (%d)\n", r);
519
520 return r;
521 }
522
523 #ifdef CONFIG_USB_PWC_DEBUG
pwc_get_cmos_sensor(struct pwc_device * pdev,int * sensor)524 int pwc_get_cmos_sensor(struct pwc_device *pdev, int *sensor)
525 {
526 int ret, request;
527
528 if (pdev->type < 675)
529 request = SENSOR_TYPE_FORMATTER1;
530 else if (pdev->type < 730)
531 return -1; /* The Vesta series doesn't have this call */
532 else
533 request = SENSOR_TYPE_FORMATTER2;
534
535 ret = recv_control_msg(pdev, GET_STATUS_CTL, request, 1);
536 if (ret < 0)
537 return ret;
538 if (pdev->type < 675)
539 *sensor = pdev->ctrl_buf[0] | 0x100;
540 else
541 *sensor = pdev->ctrl_buf[0];
542 return 0;
543 }
544 #endif
545