1 /*
2 saa6752hs - i2c-driver for the saa6752hs by Philips
3
4 Copyright (C) 2004 Andrew de Quincey
5
6 AC-3 support:
7
8 Copyright (C) 2008 Hans Verkuil <hverkuil@xs4all.nl>
9
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License vs published by
12 the Free Software Foundation; either version 2 of the License, or
13 (at your option) any later version.
14
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
19
20 You should have received a copy of the GNU General Public License
21 along with this program; if not, write to the Free Software
22 Foundation, Inc., 675 Mvss Ave, Cambridge, MA 02139, USA.
23 */
24
25 #include <linux/module.h>
26 #include <linux/kernel.h>
27 #include <linux/string.h>
28 #include <linux/timer.h>
29 #include <linux/delay.h>
30 #include <linux/errno.h>
31 #include <linux/slab.h>
32 #include <linux/poll.h>
33 #include <linux/i2c.h>
34 #include <linux/types.h>
35 #include <linux/videodev2.h>
36 #include <media/v4l2-device.h>
37 #include <media/v4l2-common.h>
38 #include <media/v4l2-chip-ident.h>
39 #include <linux/init.h>
40 #include <linux/crc32.h>
41
42 #define MPEG_VIDEO_TARGET_BITRATE_MAX 27000
43 #define MPEG_VIDEO_MAX_BITRATE_MAX 27000
44 #define MPEG_TOTAL_TARGET_BITRATE_MAX 27000
45 #define MPEG_PID_MAX ((1 << 14) - 1)
46
47
48 MODULE_DESCRIPTION("device driver for saa6752hs MPEG2 encoder");
49 MODULE_AUTHOR("Andrew de Quincey");
50 MODULE_LICENSE("GPL");
51
52 enum saa6752hs_videoformat {
53 SAA6752HS_VF_D1 = 0, /* standard D1 video format: 720x576 */
54 SAA6752HS_VF_2_3_D1 = 1,/* 2/3D1 video format: 480x576 */
55 SAA6752HS_VF_1_2_D1 = 2,/* 1/2D1 video format: 352x576 */
56 SAA6752HS_VF_SIF = 3, /* SIF video format: 352x288 */
57 SAA6752HS_VF_UNKNOWN,
58 };
59
60 struct saa6752hs_mpeg_params {
61 /* transport streams */
62 __u16 ts_pid_pmt;
63 __u16 ts_pid_audio;
64 __u16 ts_pid_video;
65 __u16 ts_pid_pcr;
66
67 /* audio */
68 enum v4l2_mpeg_audio_encoding au_encoding;
69 enum v4l2_mpeg_audio_l2_bitrate au_l2_bitrate;
70 enum v4l2_mpeg_audio_ac3_bitrate au_ac3_bitrate;
71
72 /* video */
73 enum v4l2_mpeg_video_aspect vi_aspect;
74 enum v4l2_mpeg_video_bitrate_mode vi_bitrate_mode;
75 __u32 vi_bitrate;
76 __u32 vi_bitrate_peak;
77 };
78
79 static const struct v4l2_format v4l2_format_table[] =
80 {
81 [SAA6752HS_VF_D1] =
82 { .fmt = { .pix = { .width = 720, .height = 576 }}},
83 [SAA6752HS_VF_2_3_D1] =
84 { .fmt = { .pix = { .width = 480, .height = 576 }}},
85 [SAA6752HS_VF_1_2_D1] =
86 { .fmt = { .pix = { .width = 352, .height = 576 }}},
87 [SAA6752HS_VF_SIF] =
88 { .fmt = { .pix = { .width = 352, .height = 288 }}},
89 [SAA6752HS_VF_UNKNOWN] =
90 { .fmt = { .pix = { .width = 0, .height = 0}}},
91 };
92
93 struct saa6752hs_state {
94 struct v4l2_subdev sd;
95 int chip;
96 u32 revision;
97 int has_ac3;
98 struct saa6752hs_mpeg_params params;
99 enum saa6752hs_videoformat video_format;
100 v4l2_std_id standard;
101 };
102
103 enum saa6752hs_command {
104 SAA6752HS_COMMAND_RESET = 0,
105 SAA6752HS_COMMAND_STOP = 1,
106 SAA6752HS_COMMAND_START = 2,
107 SAA6752HS_COMMAND_PAUSE = 3,
108 SAA6752HS_COMMAND_RECONFIGURE = 4,
109 SAA6752HS_COMMAND_SLEEP = 5,
110 SAA6752HS_COMMAND_RECONFIGURE_FORCE = 6,
111
112 SAA6752HS_COMMAND_MAX
113 };
114
to_state(struct v4l2_subdev * sd)115 static inline struct saa6752hs_state *to_state(struct v4l2_subdev *sd)
116 {
117 return container_of(sd, struct saa6752hs_state, sd);
118 }
119
120 /* ---------------------------------------------------------------------- */
121
122 static u8 PAT[] = {
123 0xc2, /* i2c register */
124 0x00, /* table number for encoder */
125
126 0x47, /* sync */
127 0x40, 0x00, /* transport_error_indicator(0), payload_unit_start(1), transport_priority(0), pid(0) */
128 0x10, /* transport_scrambling_control(00), adaptation_field_control(01), continuity_counter(0) */
129
130 0x00, /* PSI pointer to start of table */
131
132 0x00, /* tid(0) */
133 0xb0, 0x0d, /* section_syntax_indicator(1), section_length(13) */
134
135 0x00, 0x01, /* transport_stream_id(1) */
136
137 0xc1, /* version_number(0), current_next_indicator(1) */
138
139 0x00, 0x00, /* section_number(0), last_section_number(0) */
140
141 0x00, 0x01, /* program_number(1) */
142
143 0xe0, 0x00, /* PMT PID */
144
145 0x00, 0x00, 0x00, 0x00 /* CRC32 */
146 };
147
148 static u8 PMT[] = {
149 0xc2, /* i2c register */
150 0x01, /* table number for encoder */
151
152 0x47, /* sync */
153 0x40, 0x00, /* transport_error_indicator(0), payload_unit_start(1), transport_priority(0), pid */
154 0x10, /* transport_scrambling_control(00), adaptation_field_control(01), continuity_counter(0) */
155
156 0x00, /* PSI pointer to start of table */
157
158 0x02, /* tid(2) */
159 0xb0, 0x17, /* section_syntax_indicator(1), section_length(23) */
160
161 0x00, 0x01, /* program_number(1) */
162
163 0xc1, /* version_number(0), current_next_indicator(1) */
164
165 0x00, 0x00, /* section_number(0), last_section_number(0) */
166
167 0xe0, 0x00, /* PCR_PID */
168
169 0xf0, 0x00, /* program_info_length(0) */
170
171 0x02, 0xe0, 0x00, 0xf0, 0x00, /* video stream type(2), pid */
172 0x04, 0xe0, 0x00, 0xf0, 0x00, /* audio stream type(4), pid */
173
174 0x00, 0x00, 0x00, 0x00 /* CRC32 */
175 };
176
177 static u8 PMT_AC3[] = {
178 0xc2, /* i2c register */
179 0x01, /* table number for encoder(1) */
180 0x47, /* sync */
181
182 0x40, /* transport_error_indicator(0), payload_unit_start(1), transport_priority(0) */
183 0x10, /* PMT PID (0x0010) */
184 0x10, /* transport_scrambling_control(00), adaptation_field_control(01), continuity_counter(0) */
185
186 0x00, /* PSI pointer to start of table */
187
188 0x02, /* TID (2) */
189 0xb0, 0x1a, /* section_syntax_indicator(1), section_length(26) */
190
191 0x00, 0x01, /* program_number(1) */
192
193 0xc1, /* version_number(0), current_next_indicator(1) */
194
195 0x00, 0x00, /* section_number(0), last_section_number(0) */
196
197 0xe1, 0x04, /* PCR_PID (0x0104) */
198
199 0xf0, 0x00, /* program_info_length(0) */
200
201 0x02, 0xe1, 0x00, 0xf0, 0x00, /* video stream type(2), pid */
202 0x06, 0xe1, 0x03, 0xf0, 0x03, /* audio stream type(6), pid */
203 0x6a, /* AC3 */
204 0x01, /* Descriptor_length(1) */
205 0x00, /* component_type_flag(0), bsid_flag(0), mainid_flag(0), asvc_flag(0), reserved flags(0) */
206
207 0xED, 0xDE, 0x2D, 0xF3 /* CRC32 BE */
208 };
209
210 static struct saa6752hs_mpeg_params param_defaults =
211 {
212 .ts_pid_pmt = 16,
213 .ts_pid_video = 260,
214 .ts_pid_audio = 256,
215 .ts_pid_pcr = 259,
216
217 .vi_aspect = V4L2_MPEG_VIDEO_ASPECT_4x3,
218 .vi_bitrate = 4000,
219 .vi_bitrate_peak = 6000,
220 .vi_bitrate_mode = V4L2_MPEG_VIDEO_BITRATE_MODE_VBR,
221
222 .au_encoding = V4L2_MPEG_AUDIO_ENCODING_LAYER_2,
223 .au_l2_bitrate = V4L2_MPEG_AUDIO_L2_BITRATE_256K,
224 .au_ac3_bitrate = V4L2_MPEG_AUDIO_AC3_BITRATE_256K,
225 };
226
227 /* ---------------------------------------------------------------------- */
228
saa6752hs_chip_command(struct i2c_client * client,enum saa6752hs_command command)229 static int saa6752hs_chip_command(struct i2c_client *client,
230 enum saa6752hs_command command)
231 {
232 unsigned char buf[3];
233 unsigned long timeout;
234 int status = 0;
235
236 /* execute the command */
237 switch(command) {
238 case SAA6752HS_COMMAND_RESET:
239 buf[0] = 0x00;
240 break;
241
242 case SAA6752HS_COMMAND_STOP:
243 buf[0] = 0x03;
244 break;
245
246 case SAA6752HS_COMMAND_START:
247 buf[0] = 0x02;
248 break;
249
250 case SAA6752HS_COMMAND_PAUSE:
251 buf[0] = 0x04;
252 break;
253
254 case SAA6752HS_COMMAND_RECONFIGURE:
255 buf[0] = 0x05;
256 break;
257
258 case SAA6752HS_COMMAND_SLEEP:
259 buf[0] = 0x06;
260 break;
261
262 case SAA6752HS_COMMAND_RECONFIGURE_FORCE:
263 buf[0] = 0x07;
264 break;
265
266 default:
267 return -EINVAL;
268 }
269
270 /* set it and wait for it to be so */
271 i2c_master_send(client, buf, 1);
272 timeout = jiffies + HZ * 3;
273 for (;;) {
274 /* get the current status */
275 buf[0] = 0x10;
276 i2c_master_send(client, buf, 1);
277 i2c_master_recv(client, buf, 1);
278
279 if (!(buf[0] & 0x20))
280 break;
281 if (time_after(jiffies,timeout)) {
282 status = -ETIMEDOUT;
283 break;
284 }
285
286 msleep(10);
287 }
288
289 /* delay a bit to let encoder settle */
290 msleep(50);
291
292 return status;
293 }
294
295
set_reg8(struct i2c_client * client,uint8_t reg,uint8_t val)296 static inline void set_reg8(struct i2c_client *client, uint8_t reg, uint8_t val)
297 {
298 u8 buf[2];
299
300 buf[0] = reg;
301 buf[1] = val;
302 i2c_master_send(client, buf, 2);
303 }
304
set_reg16(struct i2c_client * client,uint8_t reg,uint16_t val)305 static inline void set_reg16(struct i2c_client *client, uint8_t reg, uint16_t val)
306 {
307 u8 buf[3];
308
309 buf[0] = reg;
310 buf[1] = val >> 8;
311 buf[2] = val & 0xff;
312 i2c_master_send(client, buf, 3);
313 }
314
saa6752hs_set_bitrate(struct i2c_client * client,struct saa6752hs_state * h)315 static int saa6752hs_set_bitrate(struct i2c_client *client,
316 struct saa6752hs_state *h)
317 {
318 struct saa6752hs_mpeg_params *params = &h->params;
319 int tot_bitrate;
320 int is_384k;
321
322 /* set the bitrate mode */
323 set_reg8(client, 0x71,
324 params->vi_bitrate_mode != V4L2_MPEG_VIDEO_BITRATE_MODE_VBR);
325
326 /* set the video bitrate */
327 if (params->vi_bitrate_mode == V4L2_MPEG_VIDEO_BITRATE_MODE_VBR) {
328 /* set the target bitrate */
329 set_reg16(client, 0x80, params->vi_bitrate);
330
331 /* set the max bitrate */
332 set_reg16(client, 0x81, params->vi_bitrate_peak);
333 tot_bitrate = params->vi_bitrate_peak;
334 } else {
335 /* set the target bitrate (no max bitrate for CBR) */
336 set_reg16(client, 0x81, params->vi_bitrate);
337 tot_bitrate = params->vi_bitrate;
338 }
339
340 /* set the audio encoding */
341 set_reg8(client, 0x93,
342 params->au_encoding == V4L2_MPEG_AUDIO_ENCODING_AC3);
343
344 /* set the audio bitrate */
345 if (params->au_encoding == V4L2_MPEG_AUDIO_ENCODING_AC3)
346 is_384k = V4L2_MPEG_AUDIO_AC3_BITRATE_384K == params->au_ac3_bitrate;
347 else
348 is_384k = V4L2_MPEG_AUDIO_L2_BITRATE_384K == params->au_l2_bitrate;
349 set_reg8(client, 0x94, is_384k);
350 tot_bitrate += is_384k ? 384 : 256;
351
352 /* Note: the total max bitrate is determined by adding the video and audio
353 bitrates together and also adding an extra 768kbit/s to stay on the
354 safe side. If more control should be required, then an extra MPEG control
355 should be added. */
356 tot_bitrate += 768;
357 if (tot_bitrate > MPEG_TOTAL_TARGET_BITRATE_MAX)
358 tot_bitrate = MPEG_TOTAL_TARGET_BITRATE_MAX;
359
360 /* set the total bitrate */
361 set_reg16(client, 0xb1, tot_bitrate);
362 return 0;
363 }
364
365
get_ctrl(int has_ac3,struct saa6752hs_mpeg_params * params,struct v4l2_ext_control * ctrl)366 static int get_ctrl(int has_ac3, struct saa6752hs_mpeg_params *params,
367 struct v4l2_ext_control *ctrl)
368 {
369 switch (ctrl->id) {
370 case V4L2_CID_MPEG_STREAM_TYPE:
371 ctrl->value = V4L2_MPEG_STREAM_TYPE_MPEG2_TS;
372 break;
373 case V4L2_CID_MPEG_STREAM_PID_PMT:
374 ctrl->value = params->ts_pid_pmt;
375 break;
376 case V4L2_CID_MPEG_STREAM_PID_AUDIO:
377 ctrl->value = params->ts_pid_audio;
378 break;
379 case V4L2_CID_MPEG_STREAM_PID_VIDEO:
380 ctrl->value = params->ts_pid_video;
381 break;
382 case V4L2_CID_MPEG_STREAM_PID_PCR:
383 ctrl->value = params->ts_pid_pcr;
384 break;
385 case V4L2_CID_MPEG_AUDIO_ENCODING:
386 ctrl->value = params->au_encoding;
387 break;
388 case V4L2_CID_MPEG_AUDIO_L2_BITRATE:
389 ctrl->value = params->au_l2_bitrate;
390 break;
391 case V4L2_CID_MPEG_AUDIO_AC3_BITRATE:
392 if (!has_ac3)
393 return -EINVAL;
394 ctrl->value = params->au_ac3_bitrate;
395 break;
396 case V4L2_CID_MPEG_AUDIO_SAMPLING_FREQ:
397 ctrl->value = V4L2_MPEG_AUDIO_SAMPLING_FREQ_48000;
398 break;
399 case V4L2_CID_MPEG_VIDEO_ENCODING:
400 ctrl->value = V4L2_MPEG_VIDEO_ENCODING_MPEG_2;
401 break;
402 case V4L2_CID_MPEG_VIDEO_ASPECT:
403 ctrl->value = params->vi_aspect;
404 break;
405 case V4L2_CID_MPEG_VIDEO_BITRATE:
406 ctrl->value = params->vi_bitrate * 1000;
407 break;
408 case V4L2_CID_MPEG_VIDEO_BITRATE_PEAK:
409 ctrl->value = params->vi_bitrate_peak * 1000;
410 break;
411 case V4L2_CID_MPEG_VIDEO_BITRATE_MODE:
412 ctrl->value = params->vi_bitrate_mode;
413 break;
414 default:
415 return -EINVAL;
416 }
417 return 0;
418 }
419
handle_ctrl(int has_ac3,struct saa6752hs_mpeg_params * params,struct v4l2_ext_control * ctrl,int set)420 static int handle_ctrl(int has_ac3, struct saa6752hs_mpeg_params *params,
421 struct v4l2_ext_control *ctrl, int set)
422 {
423 int old = 0, new;
424
425 new = ctrl->value;
426 switch (ctrl->id) {
427 case V4L2_CID_MPEG_STREAM_TYPE:
428 old = V4L2_MPEG_STREAM_TYPE_MPEG2_TS;
429 if (set && new != old)
430 return -ERANGE;
431 new = old;
432 break;
433 case V4L2_CID_MPEG_STREAM_PID_PMT:
434 old = params->ts_pid_pmt;
435 if (set && new > MPEG_PID_MAX)
436 return -ERANGE;
437 if (new > MPEG_PID_MAX)
438 new = MPEG_PID_MAX;
439 params->ts_pid_pmt = new;
440 break;
441 case V4L2_CID_MPEG_STREAM_PID_AUDIO:
442 old = params->ts_pid_audio;
443 if (set && new > MPEG_PID_MAX)
444 return -ERANGE;
445 if (new > MPEG_PID_MAX)
446 new = MPEG_PID_MAX;
447 params->ts_pid_audio = new;
448 break;
449 case V4L2_CID_MPEG_STREAM_PID_VIDEO:
450 old = params->ts_pid_video;
451 if (set && new > MPEG_PID_MAX)
452 return -ERANGE;
453 if (new > MPEG_PID_MAX)
454 new = MPEG_PID_MAX;
455 params->ts_pid_video = new;
456 break;
457 case V4L2_CID_MPEG_STREAM_PID_PCR:
458 old = params->ts_pid_pcr;
459 if (set && new > MPEG_PID_MAX)
460 return -ERANGE;
461 if (new > MPEG_PID_MAX)
462 new = MPEG_PID_MAX;
463 params->ts_pid_pcr = new;
464 break;
465 case V4L2_CID_MPEG_AUDIO_ENCODING:
466 old = params->au_encoding;
467 if (set && new != V4L2_MPEG_AUDIO_ENCODING_LAYER_2 &&
468 (!has_ac3 || new != V4L2_MPEG_AUDIO_ENCODING_AC3))
469 return -ERANGE;
470 params->au_encoding = new;
471 break;
472 case V4L2_CID_MPEG_AUDIO_L2_BITRATE:
473 old = params->au_l2_bitrate;
474 if (set && new != V4L2_MPEG_AUDIO_L2_BITRATE_256K &&
475 new != V4L2_MPEG_AUDIO_L2_BITRATE_384K)
476 return -ERANGE;
477 if (new <= V4L2_MPEG_AUDIO_L2_BITRATE_256K)
478 new = V4L2_MPEG_AUDIO_L2_BITRATE_256K;
479 else
480 new = V4L2_MPEG_AUDIO_L2_BITRATE_384K;
481 params->au_l2_bitrate = new;
482 break;
483 case V4L2_CID_MPEG_AUDIO_AC3_BITRATE:
484 if (!has_ac3)
485 return -EINVAL;
486 old = params->au_ac3_bitrate;
487 if (set && new != V4L2_MPEG_AUDIO_AC3_BITRATE_256K &&
488 new != V4L2_MPEG_AUDIO_AC3_BITRATE_384K)
489 return -ERANGE;
490 if (new <= V4L2_MPEG_AUDIO_AC3_BITRATE_256K)
491 new = V4L2_MPEG_AUDIO_AC3_BITRATE_256K;
492 else
493 new = V4L2_MPEG_AUDIO_AC3_BITRATE_384K;
494 params->au_ac3_bitrate = new;
495 break;
496 case V4L2_CID_MPEG_AUDIO_SAMPLING_FREQ:
497 old = V4L2_MPEG_AUDIO_SAMPLING_FREQ_48000;
498 if (set && new != old)
499 return -ERANGE;
500 new = old;
501 break;
502 case V4L2_CID_MPEG_VIDEO_ENCODING:
503 old = V4L2_MPEG_VIDEO_ENCODING_MPEG_2;
504 if (set && new != old)
505 return -ERANGE;
506 new = old;
507 break;
508 case V4L2_CID_MPEG_VIDEO_ASPECT:
509 old = params->vi_aspect;
510 if (set && new != V4L2_MPEG_VIDEO_ASPECT_16x9 &&
511 new != V4L2_MPEG_VIDEO_ASPECT_4x3)
512 return -ERANGE;
513 if (new != V4L2_MPEG_VIDEO_ASPECT_16x9)
514 new = V4L2_MPEG_VIDEO_ASPECT_4x3;
515 params->vi_aspect = new;
516 break;
517 case V4L2_CID_MPEG_VIDEO_BITRATE:
518 old = params->vi_bitrate * 1000;
519 new = 1000 * (new / 1000);
520 if (set && new > MPEG_VIDEO_TARGET_BITRATE_MAX * 1000)
521 return -ERANGE;
522 if (new > MPEG_VIDEO_TARGET_BITRATE_MAX * 1000)
523 new = MPEG_VIDEO_TARGET_BITRATE_MAX * 1000;
524 params->vi_bitrate = new / 1000;
525 break;
526 case V4L2_CID_MPEG_VIDEO_BITRATE_PEAK:
527 old = params->vi_bitrate_peak * 1000;
528 new = 1000 * (new / 1000);
529 if (set && new > MPEG_VIDEO_TARGET_BITRATE_MAX * 1000)
530 return -ERANGE;
531 if (new > MPEG_VIDEO_TARGET_BITRATE_MAX * 1000)
532 new = MPEG_VIDEO_TARGET_BITRATE_MAX * 1000;
533 params->vi_bitrate_peak = new / 1000;
534 break;
535 case V4L2_CID_MPEG_VIDEO_BITRATE_MODE:
536 old = params->vi_bitrate_mode;
537 params->vi_bitrate_mode = new;
538 break;
539 default:
540 return -EINVAL;
541 }
542 ctrl->value = new;
543 return 0;
544 }
545
546
saa6752hs_queryctrl(struct v4l2_subdev * sd,struct v4l2_queryctrl * qctrl)547 static int saa6752hs_queryctrl(struct v4l2_subdev *sd, struct v4l2_queryctrl *qctrl)
548 {
549 struct saa6752hs_state *h = to_state(sd);
550 struct saa6752hs_mpeg_params *params = &h->params;
551 int err;
552
553 switch (qctrl->id) {
554 case V4L2_CID_MPEG_AUDIO_ENCODING:
555 return v4l2_ctrl_query_fill(qctrl,
556 V4L2_MPEG_AUDIO_ENCODING_LAYER_2,
557 h->has_ac3 ? V4L2_MPEG_AUDIO_ENCODING_AC3 :
558 V4L2_MPEG_AUDIO_ENCODING_LAYER_2,
559 1, V4L2_MPEG_AUDIO_ENCODING_LAYER_2);
560
561 case V4L2_CID_MPEG_AUDIO_L2_BITRATE:
562 return v4l2_ctrl_query_fill(qctrl,
563 V4L2_MPEG_AUDIO_L2_BITRATE_256K,
564 V4L2_MPEG_AUDIO_L2_BITRATE_384K, 1,
565 V4L2_MPEG_AUDIO_L2_BITRATE_256K);
566
567 case V4L2_CID_MPEG_AUDIO_AC3_BITRATE:
568 if (!h->has_ac3)
569 return -EINVAL;
570 return v4l2_ctrl_query_fill(qctrl,
571 V4L2_MPEG_AUDIO_AC3_BITRATE_256K,
572 V4L2_MPEG_AUDIO_AC3_BITRATE_384K, 1,
573 V4L2_MPEG_AUDIO_AC3_BITRATE_256K);
574
575 case V4L2_CID_MPEG_AUDIO_SAMPLING_FREQ:
576 return v4l2_ctrl_query_fill(qctrl,
577 V4L2_MPEG_AUDIO_SAMPLING_FREQ_48000,
578 V4L2_MPEG_AUDIO_SAMPLING_FREQ_48000, 1,
579 V4L2_MPEG_AUDIO_SAMPLING_FREQ_48000);
580
581 case V4L2_CID_MPEG_VIDEO_ENCODING:
582 return v4l2_ctrl_query_fill(qctrl,
583 V4L2_MPEG_VIDEO_ENCODING_MPEG_2,
584 V4L2_MPEG_VIDEO_ENCODING_MPEG_2, 1,
585 V4L2_MPEG_VIDEO_ENCODING_MPEG_2);
586
587 case V4L2_CID_MPEG_VIDEO_ASPECT:
588 return v4l2_ctrl_query_fill(qctrl,
589 V4L2_MPEG_VIDEO_ASPECT_4x3,
590 V4L2_MPEG_VIDEO_ASPECT_16x9, 1,
591 V4L2_MPEG_VIDEO_ASPECT_4x3);
592
593 case V4L2_CID_MPEG_VIDEO_BITRATE_PEAK:
594 err = v4l2_ctrl_query_fill(qctrl, 0, 27000000, 1, 8000000);
595 if (err == 0 &&
596 params->vi_bitrate_mode ==
597 V4L2_MPEG_VIDEO_BITRATE_MODE_CBR)
598 qctrl->flags |= V4L2_CTRL_FLAG_INACTIVE;
599 return err;
600
601 case V4L2_CID_MPEG_STREAM_TYPE:
602 return v4l2_ctrl_query_fill(qctrl,
603 V4L2_MPEG_STREAM_TYPE_MPEG2_TS,
604 V4L2_MPEG_STREAM_TYPE_MPEG2_TS, 1,
605 V4L2_MPEG_STREAM_TYPE_MPEG2_TS);
606
607 case V4L2_CID_MPEG_VIDEO_BITRATE_MODE:
608 return v4l2_ctrl_query_fill(qctrl,
609 V4L2_MPEG_VIDEO_BITRATE_MODE_VBR,
610 V4L2_MPEG_VIDEO_BITRATE_MODE_CBR, 1,
611 V4L2_MPEG_VIDEO_BITRATE_MODE_VBR);
612 case V4L2_CID_MPEG_VIDEO_BITRATE:
613 return v4l2_ctrl_query_fill(qctrl, 0, 27000000, 1, 6000000);
614 case V4L2_CID_MPEG_STREAM_PID_PMT:
615 return v4l2_ctrl_query_fill(qctrl, 0, (1 << 14) - 1, 1, 16);
616 case V4L2_CID_MPEG_STREAM_PID_AUDIO:
617 return v4l2_ctrl_query_fill(qctrl, 0, (1 << 14) - 1, 1, 260);
618 case V4L2_CID_MPEG_STREAM_PID_VIDEO:
619 return v4l2_ctrl_query_fill(qctrl, 0, (1 << 14) - 1, 1, 256);
620 case V4L2_CID_MPEG_STREAM_PID_PCR:
621 return v4l2_ctrl_query_fill(qctrl, 0, (1 << 14) - 1, 1, 259);
622
623 default:
624 break;
625 }
626 return -EINVAL;
627 }
628
saa6752hs_querymenu(struct v4l2_subdev * sd,struct v4l2_querymenu * qmenu)629 static int saa6752hs_querymenu(struct v4l2_subdev *sd, struct v4l2_querymenu *qmenu)
630 {
631 static const u32 mpeg_audio_encoding[] = {
632 V4L2_MPEG_AUDIO_ENCODING_LAYER_2,
633 V4L2_CTRL_MENU_IDS_END
634 };
635 static const u32 mpeg_audio_ac3_encoding[] = {
636 V4L2_MPEG_AUDIO_ENCODING_LAYER_2,
637 V4L2_MPEG_AUDIO_ENCODING_AC3,
638 V4L2_CTRL_MENU_IDS_END
639 };
640 static u32 mpeg_audio_l2_bitrate[] = {
641 V4L2_MPEG_AUDIO_L2_BITRATE_256K,
642 V4L2_MPEG_AUDIO_L2_BITRATE_384K,
643 V4L2_CTRL_MENU_IDS_END
644 };
645 static u32 mpeg_audio_ac3_bitrate[] = {
646 V4L2_MPEG_AUDIO_AC3_BITRATE_256K,
647 V4L2_MPEG_AUDIO_AC3_BITRATE_384K,
648 V4L2_CTRL_MENU_IDS_END
649 };
650 struct saa6752hs_state *h = to_state(sd);
651 struct v4l2_queryctrl qctrl;
652 int err;
653
654 qctrl.id = qmenu->id;
655 err = saa6752hs_queryctrl(sd, &qctrl);
656 if (err)
657 return err;
658 switch (qmenu->id) {
659 case V4L2_CID_MPEG_AUDIO_L2_BITRATE:
660 return v4l2_ctrl_query_menu_valid_items(qmenu,
661 mpeg_audio_l2_bitrate);
662 case V4L2_CID_MPEG_AUDIO_AC3_BITRATE:
663 if (!h->has_ac3)
664 return -EINVAL;
665 return v4l2_ctrl_query_menu_valid_items(qmenu,
666 mpeg_audio_ac3_bitrate);
667 case V4L2_CID_MPEG_AUDIO_ENCODING:
668 return v4l2_ctrl_query_menu_valid_items(qmenu,
669 h->has_ac3 ? mpeg_audio_ac3_encoding :
670 mpeg_audio_encoding);
671 }
672 return v4l2_ctrl_query_menu(qmenu, &qctrl, NULL);
673 }
674
saa6752hs_init(struct v4l2_subdev * sd,u32 leading_null_bytes)675 static int saa6752hs_init(struct v4l2_subdev *sd, u32 leading_null_bytes)
676 {
677 unsigned char buf[9], buf2[4];
678 struct saa6752hs_state *h = to_state(sd);
679 struct i2c_client *client = v4l2_get_subdevdata(sd);
680 unsigned size;
681 u32 crc;
682 unsigned char localPAT[256];
683 unsigned char localPMT[256];
684
685 /* Set video format - must be done first as it resets other settings */
686 set_reg8(client, 0x41, h->video_format);
687
688 /* Set number of lines in input signal */
689 set_reg8(client, 0x40, (h->standard & V4L2_STD_525_60) ? 1 : 0);
690
691 /* set bitrate */
692 saa6752hs_set_bitrate(client, h);
693
694 /* Set GOP structure {3, 13} */
695 set_reg16(client, 0x72, 0x030d);
696
697 /* Set minimum Q-scale {4} */
698 set_reg8(client, 0x82, 0x04);
699
700 /* Set maximum Q-scale {12} */
701 set_reg8(client, 0x83, 0x0c);
702
703 /* Set Output Protocol */
704 set_reg8(client, 0xd0, 0x81);
705
706 /* Set video output stream format {TS} */
707 set_reg8(client, 0xb0, 0x05);
708
709 /* Set leading null byte for TS */
710 set_reg16(client, 0xf6, leading_null_bytes);
711
712 /* compute PAT */
713 memcpy(localPAT, PAT, sizeof(PAT));
714 localPAT[17] = 0xe0 | ((h->params.ts_pid_pmt >> 8) & 0x0f);
715 localPAT[18] = h->params.ts_pid_pmt & 0xff;
716 crc = crc32_be(~0, &localPAT[7], sizeof(PAT) - 7 - 4);
717 localPAT[sizeof(PAT) - 4] = (crc >> 24) & 0xFF;
718 localPAT[sizeof(PAT) - 3] = (crc >> 16) & 0xFF;
719 localPAT[sizeof(PAT) - 2] = (crc >> 8) & 0xFF;
720 localPAT[sizeof(PAT) - 1] = crc & 0xFF;
721
722 /* compute PMT */
723 if (h->params.au_encoding == V4L2_MPEG_AUDIO_ENCODING_AC3) {
724 size = sizeof(PMT_AC3);
725 memcpy(localPMT, PMT_AC3, size);
726 } else {
727 size = sizeof(PMT);
728 memcpy(localPMT, PMT, size);
729 }
730 localPMT[3] = 0x40 | ((h->params.ts_pid_pmt >> 8) & 0x0f);
731 localPMT[4] = h->params.ts_pid_pmt & 0xff;
732 localPMT[15] = 0xE0 | ((h->params.ts_pid_pcr >> 8) & 0x0F);
733 localPMT[16] = h->params.ts_pid_pcr & 0xFF;
734 localPMT[20] = 0xE0 | ((h->params.ts_pid_video >> 8) & 0x0F);
735 localPMT[21] = h->params.ts_pid_video & 0xFF;
736 localPMT[25] = 0xE0 | ((h->params.ts_pid_audio >> 8) & 0x0F);
737 localPMT[26] = h->params.ts_pid_audio & 0xFF;
738 crc = crc32_be(~0, &localPMT[7], size - 7 - 4);
739 localPMT[size - 4] = (crc >> 24) & 0xFF;
740 localPMT[size - 3] = (crc >> 16) & 0xFF;
741 localPMT[size - 2] = (crc >> 8) & 0xFF;
742 localPMT[size - 1] = crc & 0xFF;
743
744 /* Set Audio PID */
745 set_reg16(client, 0xc1, h->params.ts_pid_audio);
746
747 /* Set Video PID */
748 set_reg16(client, 0xc0, h->params.ts_pid_video);
749
750 /* Set PCR PID */
751 set_reg16(client, 0xc4, h->params.ts_pid_pcr);
752
753 /* Send SI tables */
754 i2c_master_send(client, localPAT, sizeof(PAT));
755 i2c_master_send(client, localPMT, size);
756
757 /* mute then unmute audio. This removes buzzing artefacts */
758 set_reg8(client, 0xa4, 1);
759 set_reg8(client, 0xa4, 0);
760
761 /* start it going */
762 saa6752hs_chip_command(client, SAA6752HS_COMMAND_START);
763
764 /* readout current state */
765 buf[0] = 0xE1;
766 buf[1] = 0xA7;
767 buf[2] = 0xFE;
768 buf[3] = 0x82;
769 buf[4] = 0xB0;
770 i2c_master_send(client, buf, 5);
771 i2c_master_recv(client, buf2, 4);
772
773 /* change aspect ratio */
774 buf[0] = 0xE0;
775 buf[1] = 0xA7;
776 buf[2] = 0xFE;
777 buf[3] = 0x82;
778 buf[4] = 0xB0;
779 buf[5] = buf2[0];
780 switch (h->params.vi_aspect) {
781 case V4L2_MPEG_VIDEO_ASPECT_16x9:
782 buf[6] = buf2[1] | 0x40;
783 break;
784 case V4L2_MPEG_VIDEO_ASPECT_4x3:
785 default:
786 buf[6] = buf2[1] & 0xBF;
787 break;
788 }
789 buf[7] = buf2[2];
790 buf[8] = buf2[3];
791 i2c_master_send(client, buf, 9);
792
793 return 0;
794 }
795
saa6752hs_do_ext_ctrls(struct v4l2_subdev * sd,struct v4l2_ext_controls * ctrls,int set)796 static int saa6752hs_do_ext_ctrls(struct v4l2_subdev *sd, struct v4l2_ext_controls *ctrls, int set)
797 {
798 struct saa6752hs_state *h = to_state(sd);
799 struct saa6752hs_mpeg_params params;
800 int i;
801
802 if (ctrls->ctrl_class != V4L2_CTRL_CLASS_MPEG)
803 return -EINVAL;
804
805 params = h->params;
806 for (i = 0; i < ctrls->count; i++) {
807 int err = handle_ctrl(h->has_ac3, ¶ms, ctrls->controls + i, set);
808
809 if (err) {
810 ctrls->error_idx = i;
811 return err;
812 }
813 }
814 if (set)
815 h->params = params;
816 return 0;
817 }
818
saa6752hs_s_ext_ctrls(struct v4l2_subdev * sd,struct v4l2_ext_controls * ctrls)819 static int saa6752hs_s_ext_ctrls(struct v4l2_subdev *sd, struct v4l2_ext_controls *ctrls)
820 {
821 return saa6752hs_do_ext_ctrls(sd, ctrls, 1);
822 }
823
saa6752hs_try_ext_ctrls(struct v4l2_subdev * sd,struct v4l2_ext_controls * ctrls)824 static int saa6752hs_try_ext_ctrls(struct v4l2_subdev *sd, struct v4l2_ext_controls *ctrls)
825 {
826 return saa6752hs_do_ext_ctrls(sd, ctrls, 0);
827 }
828
saa6752hs_g_ext_ctrls(struct v4l2_subdev * sd,struct v4l2_ext_controls * ctrls)829 static int saa6752hs_g_ext_ctrls(struct v4l2_subdev *sd, struct v4l2_ext_controls *ctrls)
830 {
831 struct saa6752hs_state *h = to_state(sd);
832 int i;
833
834 if (ctrls->ctrl_class != V4L2_CTRL_CLASS_MPEG)
835 return -EINVAL;
836
837 for (i = 0; i < ctrls->count; i++) {
838 int err = get_ctrl(h->has_ac3, &h->params, ctrls->controls + i);
839
840 if (err) {
841 ctrls->error_idx = i;
842 return err;
843 }
844 }
845 return 0;
846 }
847
saa6752hs_g_mbus_fmt(struct v4l2_subdev * sd,struct v4l2_mbus_framefmt * f)848 static int saa6752hs_g_mbus_fmt(struct v4l2_subdev *sd, struct v4l2_mbus_framefmt *f)
849 {
850 struct saa6752hs_state *h = to_state(sd);
851
852 if (h->video_format == SAA6752HS_VF_UNKNOWN)
853 h->video_format = SAA6752HS_VF_D1;
854 f->width = v4l2_format_table[h->video_format].fmt.pix.width;
855 f->height = v4l2_format_table[h->video_format].fmt.pix.height;
856 f->code = V4L2_MBUS_FMT_FIXED;
857 f->field = V4L2_FIELD_INTERLACED;
858 f->colorspace = V4L2_COLORSPACE_SMPTE170M;
859 return 0;
860 }
861
saa6752hs_s_mbus_fmt(struct v4l2_subdev * sd,struct v4l2_mbus_framefmt * f)862 static int saa6752hs_s_mbus_fmt(struct v4l2_subdev *sd, struct v4l2_mbus_framefmt *f)
863 {
864 struct saa6752hs_state *h = to_state(sd);
865 int dist_352, dist_480, dist_720;
866
867 if (f->code != V4L2_MBUS_FMT_FIXED)
868 return -EINVAL;
869
870 /*
871 FIXME: translate and round width/height into EMPRESS
872 subsample type:
873
874 type | PAL | NTSC
875 ---------------------------
876 SIF | 352x288 | 352x240
877 1/2 D1 | 352x576 | 352x480
878 2/3 D1 | 480x576 | 480x480
879 D1 | 720x576 | 720x480
880 */
881
882 dist_352 = abs(f->width - 352);
883 dist_480 = abs(f->width - 480);
884 dist_720 = abs(f->width - 720);
885 if (dist_720 < dist_480) {
886 f->width = 720;
887 f->height = 576;
888 h->video_format = SAA6752HS_VF_D1;
889 } else if (dist_480 < dist_352) {
890 f->width = 480;
891 f->height = 576;
892 h->video_format = SAA6752HS_VF_2_3_D1;
893 } else {
894 f->width = 352;
895 if (abs(f->height - 576) <
896 abs(f->height - 288)) {
897 f->height = 576;
898 h->video_format = SAA6752HS_VF_1_2_D1;
899 } else {
900 f->height = 288;
901 h->video_format = SAA6752HS_VF_SIF;
902 }
903 }
904 f->field = V4L2_FIELD_INTERLACED;
905 f->colorspace = V4L2_COLORSPACE_SMPTE170M;
906 return 0;
907 }
908
saa6752hs_s_std(struct v4l2_subdev * sd,v4l2_std_id std)909 static int saa6752hs_s_std(struct v4l2_subdev *sd, v4l2_std_id std)
910 {
911 struct saa6752hs_state *h = to_state(sd);
912
913 h->standard = std;
914 return 0;
915 }
916
saa6752hs_g_chip_ident(struct v4l2_subdev * sd,struct v4l2_dbg_chip_ident * chip)917 static int saa6752hs_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_dbg_chip_ident *chip)
918 {
919 struct i2c_client *client = v4l2_get_subdevdata(sd);
920 struct saa6752hs_state *h = to_state(sd);
921
922 return v4l2_chip_ident_i2c_client(client,
923 chip, h->chip, h->revision);
924 }
925
926 /* ----------------------------------------------------------------------- */
927
928 static const struct v4l2_subdev_core_ops saa6752hs_core_ops = {
929 .g_chip_ident = saa6752hs_g_chip_ident,
930 .init = saa6752hs_init,
931 .queryctrl = saa6752hs_queryctrl,
932 .querymenu = saa6752hs_querymenu,
933 .g_ext_ctrls = saa6752hs_g_ext_ctrls,
934 .s_ext_ctrls = saa6752hs_s_ext_ctrls,
935 .try_ext_ctrls = saa6752hs_try_ext_ctrls,
936 .s_std = saa6752hs_s_std,
937 };
938
939 static const struct v4l2_subdev_video_ops saa6752hs_video_ops = {
940 .s_mbus_fmt = saa6752hs_s_mbus_fmt,
941 .g_mbus_fmt = saa6752hs_g_mbus_fmt,
942 };
943
944 static const struct v4l2_subdev_ops saa6752hs_ops = {
945 .core = &saa6752hs_core_ops,
946 .video = &saa6752hs_video_ops,
947 };
948
saa6752hs_probe(struct i2c_client * client,const struct i2c_device_id * id)949 static int saa6752hs_probe(struct i2c_client *client,
950 const struct i2c_device_id *id)
951 {
952 struct saa6752hs_state *h = kzalloc(sizeof(*h), GFP_KERNEL);
953 struct v4l2_subdev *sd;
954 u8 addr = 0x13;
955 u8 data[12];
956
957 v4l_info(client, "chip found @ 0x%x (%s)\n",
958 client->addr << 1, client->adapter->name);
959 if (h == NULL)
960 return -ENOMEM;
961 sd = &h->sd;
962 v4l2_i2c_subdev_init(sd, client, &saa6752hs_ops);
963
964 i2c_master_send(client, &addr, 1);
965 i2c_master_recv(client, data, sizeof(data));
966 h->chip = V4L2_IDENT_SAA6752HS;
967 h->revision = (data[8] << 8) | data[9];
968 h->has_ac3 = 0;
969 if (h->revision == 0x0206) {
970 h->chip = V4L2_IDENT_SAA6752HS_AC3;
971 h->has_ac3 = 1;
972 v4l_info(client, "support AC-3\n");
973 }
974 h->params = param_defaults;
975 h->standard = 0; /* Assume 625 input lines */
976 return 0;
977 }
978
saa6752hs_remove(struct i2c_client * client)979 static int saa6752hs_remove(struct i2c_client *client)
980 {
981 struct v4l2_subdev *sd = i2c_get_clientdata(client);
982
983 v4l2_device_unregister_subdev(sd);
984 kfree(to_state(sd));
985 return 0;
986 }
987
988 static const struct i2c_device_id saa6752hs_id[] = {
989 { "saa6752hs", 0 },
990 { }
991 };
992 MODULE_DEVICE_TABLE(i2c, saa6752hs_id);
993
994 static struct i2c_driver saa6752hs_driver = {
995 .driver = {
996 .owner = THIS_MODULE,
997 .name = "saa6752hs",
998 },
999 .probe = saa6752hs_probe,
1000 .remove = saa6752hs_remove,
1001 .id_table = saa6752hs_id,
1002 };
1003
init_saa6752hs(void)1004 static __init int init_saa6752hs(void)
1005 {
1006 return i2c_add_driver(&saa6752hs_driver);
1007 }
1008
exit_saa6752hs(void)1009 static __exit void exit_saa6752hs(void)
1010 {
1011 i2c_del_driver(&saa6752hs_driver);
1012 }
1013
1014 module_init(init_saa6752hs);
1015 module_exit(exit_saa6752hs);
1016
1017 /*
1018 * Overrides for Emacs so that we follow Linus's tabbing style.
1019 * ---------------------------------------------------------------------------
1020 * Local variables:
1021 * c-basic-offset: 8
1022 * End:
1023 */
1024