1 | // SPDX-License-Identifier: GPL-2.0-or-later |
2 | /* |
3 | saa6752hs - i2c-driver for the saa6752hs by Philips |
4 | |
5 | Copyright (C) 2004 Andrew de Quincey |
6 | |
7 | AC-3 support: |
8 | |
9 | Copyright (C) 2008 Hans Verkuil <hverkuil@xs4all.nl> |
10 | |
11 | */ |
12 | |
13 | #include <linux/module.h> |
14 | #include <linux/kernel.h> |
15 | #include <linux/string.h> |
16 | #include <linux/timer.h> |
17 | #include <linux/delay.h> |
18 | #include <linux/errno.h> |
19 | #include <linux/slab.h> |
20 | #include <linux/poll.h> |
21 | #include <linux/i2c.h> |
22 | #include <linux/types.h> |
23 | #include <linux/videodev2.h> |
24 | #include <linux/init.h> |
25 | #include <linux/crc32.h> |
26 | #include <media/v4l2-device.h> |
27 | #include <media/v4l2-ctrls.h> |
28 | #include <media/v4l2-common.h> |
29 | |
30 | #define MPEG_VIDEO_TARGET_BITRATE_MAX 27000 |
31 | #define MPEG_VIDEO_MAX_BITRATE_MAX 27000 |
32 | #define MPEG_TOTAL_TARGET_BITRATE_MAX 27000 |
33 | #define MPEG_PID_MAX ((1 << 14) - 1) |
34 | |
35 | |
36 | MODULE_DESCRIPTION("device driver for saa6752hs MPEG2 encoder" ); |
37 | MODULE_AUTHOR("Andrew de Quincey" ); |
38 | MODULE_LICENSE("GPL" ); |
39 | |
40 | enum saa6752hs_videoformat { |
41 | SAA6752HS_VF_D1 = 0, /* standard D1 video format: 720x576 */ |
42 | SAA6752HS_VF_2_3_D1 = 1,/* 2/3D1 video format: 480x576 */ |
43 | SAA6752HS_VF_1_2_D1 = 2,/* 1/2D1 video format: 352x576 */ |
44 | SAA6752HS_VF_SIF = 3, /* SIF video format: 352x288 */ |
45 | SAA6752HS_VF_UNKNOWN, |
46 | }; |
47 | |
48 | struct saa6752hs_mpeg_params { |
49 | /* transport streams */ |
50 | __u16 ts_pid_pmt; |
51 | __u16 ts_pid_audio; |
52 | __u16 ts_pid_video; |
53 | __u16 ts_pid_pcr; |
54 | |
55 | /* audio */ |
56 | enum v4l2_mpeg_audio_encoding au_encoding; |
57 | enum v4l2_mpeg_audio_l2_bitrate au_l2_bitrate; |
58 | enum v4l2_mpeg_audio_ac3_bitrate au_ac3_bitrate; |
59 | |
60 | /* video */ |
61 | enum v4l2_mpeg_video_aspect vi_aspect; |
62 | enum v4l2_mpeg_video_bitrate_mode vi_bitrate_mode; |
63 | __u32 vi_bitrate; |
64 | __u32 vi_bitrate_peak; |
65 | }; |
66 | |
67 | static const struct v4l2_format v4l2_format_table[] = |
68 | { |
69 | [SAA6752HS_VF_D1] = |
70 | { .fmt = { .pix = { .width = 720, .height = 576 }}}, |
71 | [SAA6752HS_VF_2_3_D1] = |
72 | { .fmt = { .pix = { .width = 480, .height = 576 }}}, |
73 | [SAA6752HS_VF_1_2_D1] = |
74 | { .fmt = { .pix = { .width = 352, .height = 576 }}}, |
75 | [SAA6752HS_VF_SIF] = |
76 | { .fmt = { .pix = { .width = 352, .height = 288 }}}, |
77 | [SAA6752HS_VF_UNKNOWN] = |
78 | { .fmt = { .pix = { .width = 0, .height = 0}}}, |
79 | }; |
80 | |
81 | struct saa6752hs_state { |
82 | struct v4l2_subdev sd; |
83 | struct v4l2_ctrl_handler hdl; |
84 | struct { /* video bitrate mode control cluster */ |
85 | struct v4l2_ctrl *video_bitrate_mode; |
86 | struct v4l2_ctrl *video_bitrate; |
87 | struct v4l2_ctrl *video_bitrate_peak; |
88 | }; |
89 | u32 revision; |
90 | int has_ac3; |
91 | struct saa6752hs_mpeg_params params; |
92 | enum saa6752hs_videoformat video_format; |
93 | v4l2_std_id standard; |
94 | }; |
95 | |
96 | enum saa6752hs_command { |
97 | SAA6752HS_COMMAND_RESET = 0, |
98 | SAA6752HS_COMMAND_STOP = 1, |
99 | SAA6752HS_COMMAND_START = 2, |
100 | SAA6752HS_COMMAND_PAUSE = 3, |
101 | SAA6752HS_COMMAND_RECONFIGURE = 4, |
102 | SAA6752HS_COMMAND_SLEEP = 5, |
103 | SAA6752HS_COMMAND_RECONFIGURE_FORCE = 6, |
104 | |
105 | SAA6752HS_COMMAND_MAX |
106 | }; |
107 | |
108 | static inline struct saa6752hs_state *to_state(struct v4l2_subdev *sd) |
109 | { |
110 | return container_of(sd, struct saa6752hs_state, sd); |
111 | } |
112 | |
113 | /* ---------------------------------------------------------------------- */ |
114 | |
115 | static const u8 PAT[] = { |
116 | 0xc2, /* i2c register */ |
117 | 0x00, /* table number for encoder */ |
118 | |
119 | 0x47, /* sync */ |
120 | 0x40, 0x00, /* transport_error_indicator(0), payload_unit_start(1), transport_priority(0), pid(0) */ |
121 | 0x10, /* transport_scrambling_control(00), adaptation_field_control(01), continuity_counter(0) */ |
122 | |
123 | 0x00, /* PSI pointer to start of table */ |
124 | |
125 | 0x00, /* tid(0) */ |
126 | 0xb0, 0x0d, /* section_syntax_indicator(1), section_length(13) */ |
127 | |
128 | 0x00, 0x01, /* transport_stream_id(1) */ |
129 | |
130 | 0xc1, /* version_number(0), current_next_indicator(1) */ |
131 | |
132 | 0x00, 0x00, /* section_number(0), last_section_number(0) */ |
133 | |
134 | 0x00, 0x01, /* program_number(1) */ |
135 | |
136 | 0xe0, 0x00, /* PMT PID */ |
137 | |
138 | 0x00, 0x00, 0x00, 0x00 /* CRC32 */ |
139 | }; |
140 | |
141 | static const u8 PMT[] = { |
142 | 0xc2, /* i2c register */ |
143 | 0x01, /* table number for encoder */ |
144 | |
145 | 0x47, /* sync */ |
146 | 0x40, 0x00, /* transport_error_indicator(0), payload_unit_start(1), transport_priority(0), pid */ |
147 | 0x10, /* transport_scrambling_control(00), adaptation_field_control(01), continuity_counter(0) */ |
148 | |
149 | 0x00, /* PSI pointer to start of table */ |
150 | |
151 | 0x02, /* tid(2) */ |
152 | 0xb0, 0x17, /* section_syntax_indicator(1), section_length(23) */ |
153 | |
154 | 0x00, 0x01, /* program_number(1) */ |
155 | |
156 | 0xc1, /* version_number(0), current_next_indicator(1) */ |
157 | |
158 | 0x00, 0x00, /* section_number(0), last_section_number(0) */ |
159 | |
160 | 0xe0, 0x00, /* PCR_PID */ |
161 | |
162 | 0xf0, 0x00, /* program_info_length(0) */ |
163 | |
164 | 0x02, 0xe0, 0x00, 0xf0, 0x00, /* video stream type(2), pid */ |
165 | 0x04, 0xe0, 0x00, 0xf0, 0x00, /* audio stream type(4), pid */ |
166 | |
167 | 0x00, 0x00, 0x00, 0x00 /* CRC32 */ |
168 | }; |
169 | |
170 | static const u8 PMT_AC3[] = { |
171 | 0xc2, /* i2c register */ |
172 | 0x01, /* table number for encoder(1) */ |
173 | 0x47, /* sync */ |
174 | |
175 | 0x40, /* transport_error_indicator(0), payload_unit_start(1), transport_priority(0) */ |
176 | 0x10, /* PMT PID (0x0010) */ |
177 | 0x10, /* transport_scrambling_control(00), adaptation_field_control(01), continuity_counter(0) */ |
178 | |
179 | 0x00, /* PSI pointer to start of table */ |
180 | |
181 | 0x02, /* TID (2) */ |
182 | 0xb0, 0x1a, /* section_syntax_indicator(1), section_length(26) */ |
183 | |
184 | 0x00, 0x01, /* program_number(1) */ |
185 | |
186 | 0xc1, /* version_number(0), current_next_indicator(1) */ |
187 | |
188 | 0x00, 0x00, /* section_number(0), last_section_number(0) */ |
189 | |
190 | 0xe1, 0x04, /* PCR_PID (0x0104) */ |
191 | |
192 | 0xf0, 0x00, /* program_info_length(0) */ |
193 | |
194 | 0x02, 0xe1, 0x00, 0xf0, 0x00, /* video stream type(2), pid */ |
195 | 0x06, 0xe1, 0x03, 0xf0, 0x03, /* audio stream type(6), pid */ |
196 | 0x6a, /* AC3 */ |
197 | 0x01, /* Descriptor_length(1) */ |
198 | 0x00, /* component_type_flag(0), bsid_flag(0), mainid_flag(0), asvc_flag(0), reserved flags(0) */ |
199 | |
200 | 0xED, 0xDE, 0x2D, 0xF3 /* CRC32 BE */ |
201 | }; |
202 | |
203 | static const struct saa6752hs_mpeg_params param_defaults = |
204 | { |
205 | .ts_pid_pmt = 16, |
206 | .ts_pid_video = 260, |
207 | .ts_pid_audio = 256, |
208 | .ts_pid_pcr = 259, |
209 | |
210 | .vi_aspect = V4L2_MPEG_VIDEO_ASPECT_4x3, |
211 | .vi_bitrate = 4000, |
212 | .vi_bitrate_peak = 6000, |
213 | .vi_bitrate_mode = V4L2_MPEG_VIDEO_BITRATE_MODE_VBR, |
214 | |
215 | .au_encoding = V4L2_MPEG_AUDIO_ENCODING_LAYER_2, |
216 | .au_l2_bitrate = V4L2_MPEG_AUDIO_L2_BITRATE_256K, |
217 | .au_ac3_bitrate = V4L2_MPEG_AUDIO_AC3_BITRATE_256K, |
218 | }; |
219 | |
220 | /* ---------------------------------------------------------------------- */ |
221 | |
222 | static int saa6752hs_chip_command(struct i2c_client *client, |
223 | enum saa6752hs_command command) |
224 | { |
225 | unsigned char buf[3]; |
226 | unsigned long timeout; |
227 | int status = 0; |
228 | |
229 | /* execute the command */ |
230 | switch(command) { |
231 | case SAA6752HS_COMMAND_RESET: |
232 | buf[0] = 0x00; |
233 | break; |
234 | |
235 | case SAA6752HS_COMMAND_STOP: |
236 | buf[0] = 0x03; |
237 | break; |
238 | |
239 | case SAA6752HS_COMMAND_START: |
240 | buf[0] = 0x02; |
241 | break; |
242 | |
243 | case SAA6752HS_COMMAND_PAUSE: |
244 | buf[0] = 0x04; |
245 | break; |
246 | |
247 | case SAA6752HS_COMMAND_RECONFIGURE: |
248 | buf[0] = 0x05; |
249 | break; |
250 | |
251 | case SAA6752HS_COMMAND_SLEEP: |
252 | buf[0] = 0x06; |
253 | break; |
254 | |
255 | case SAA6752HS_COMMAND_RECONFIGURE_FORCE: |
256 | buf[0] = 0x07; |
257 | break; |
258 | |
259 | default: |
260 | return -EINVAL; |
261 | } |
262 | |
263 | /* set it and wait for it to be so */ |
264 | i2c_master_send(client, buf, count: 1); |
265 | timeout = jiffies + HZ * 3; |
266 | for (;;) { |
267 | /* get the current status */ |
268 | buf[0] = 0x10; |
269 | i2c_master_send(client, buf, count: 1); |
270 | i2c_master_recv(client, buf, count: 1); |
271 | |
272 | if (!(buf[0] & 0x20)) |
273 | break; |
274 | if (time_after(jiffies,timeout)) { |
275 | status = -ETIMEDOUT; |
276 | break; |
277 | } |
278 | |
279 | msleep(msecs: 10); |
280 | } |
281 | |
282 | /* delay a bit to let encoder settle */ |
283 | msleep(msecs: 50); |
284 | |
285 | return status; |
286 | } |
287 | |
288 | |
289 | static inline void set_reg8(struct i2c_client *client, uint8_t reg, uint8_t val) |
290 | { |
291 | u8 buf[2]; |
292 | |
293 | buf[0] = reg; |
294 | buf[1] = val; |
295 | i2c_master_send(client, buf, count: 2); |
296 | } |
297 | |
298 | static inline void set_reg16(struct i2c_client *client, uint8_t reg, uint16_t val) |
299 | { |
300 | u8 buf[3]; |
301 | |
302 | buf[0] = reg; |
303 | buf[1] = val >> 8; |
304 | buf[2] = val & 0xff; |
305 | i2c_master_send(client, buf, count: 3); |
306 | } |
307 | |
308 | static int saa6752hs_set_bitrate(struct i2c_client *client, |
309 | struct saa6752hs_state *h) |
310 | { |
311 | struct saa6752hs_mpeg_params *params = &h->params; |
312 | int tot_bitrate; |
313 | int is_384k; |
314 | |
315 | /* set the bitrate mode */ |
316 | set_reg8(client, reg: 0x71, |
317 | val: params->vi_bitrate_mode != V4L2_MPEG_VIDEO_BITRATE_MODE_VBR); |
318 | |
319 | /* set the video bitrate */ |
320 | if (params->vi_bitrate_mode == V4L2_MPEG_VIDEO_BITRATE_MODE_VBR) { |
321 | /* set the target bitrate */ |
322 | set_reg16(client, reg: 0x80, val: params->vi_bitrate); |
323 | |
324 | /* set the max bitrate */ |
325 | set_reg16(client, reg: 0x81, val: params->vi_bitrate_peak); |
326 | tot_bitrate = params->vi_bitrate_peak; |
327 | } else { |
328 | /* set the target bitrate (no max bitrate for CBR) */ |
329 | set_reg16(client, reg: 0x81, val: params->vi_bitrate); |
330 | tot_bitrate = params->vi_bitrate; |
331 | } |
332 | |
333 | /* set the audio encoding */ |
334 | set_reg8(client, reg: 0x93, |
335 | val: params->au_encoding == V4L2_MPEG_AUDIO_ENCODING_AC3); |
336 | |
337 | /* set the audio bitrate */ |
338 | if (params->au_encoding == V4L2_MPEG_AUDIO_ENCODING_AC3) |
339 | is_384k = V4L2_MPEG_AUDIO_AC3_BITRATE_384K == params->au_ac3_bitrate; |
340 | else |
341 | is_384k = V4L2_MPEG_AUDIO_L2_BITRATE_384K == params->au_l2_bitrate; |
342 | set_reg8(client, reg: 0x94, val: is_384k); |
343 | tot_bitrate += is_384k ? 384 : 256; |
344 | |
345 | /* Note: the total max bitrate is determined by adding the video and audio |
346 | bitrates together and also adding an extra 768kbit/s to stay on the |
347 | safe side. If more control should be required, then an extra MPEG control |
348 | should be added. */ |
349 | tot_bitrate += 768; |
350 | if (tot_bitrate > MPEG_TOTAL_TARGET_BITRATE_MAX) |
351 | tot_bitrate = MPEG_TOTAL_TARGET_BITRATE_MAX; |
352 | |
353 | /* set the total bitrate */ |
354 | set_reg16(client, reg: 0xb1, val: tot_bitrate); |
355 | return 0; |
356 | } |
357 | |
358 | static int saa6752hs_try_ctrl(struct v4l2_ctrl *ctrl) |
359 | { |
360 | struct saa6752hs_state *h = |
361 | container_of(ctrl->handler, struct saa6752hs_state, hdl); |
362 | |
363 | switch (ctrl->id) { |
364 | case V4L2_CID_MPEG_VIDEO_BITRATE_MODE: |
365 | /* peak bitrate shall be >= normal bitrate */ |
366 | if (ctrl->val == V4L2_MPEG_VIDEO_BITRATE_MODE_VBR && |
367 | h->video_bitrate_peak->val < h->video_bitrate->val) |
368 | h->video_bitrate_peak->val = h->video_bitrate->val; |
369 | break; |
370 | } |
371 | return 0; |
372 | } |
373 | |
374 | static int saa6752hs_s_ctrl(struct v4l2_ctrl *ctrl) |
375 | { |
376 | struct saa6752hs_state *h = |
377 | container_of(ctrl->handler, struct saa6752hs_state, hdl); |
378 | struct saa6752hs_mpeg_params *params = &h->params; |
379 | |
380 | switch (ctrl->id) { |
381 | case V4L2_CID_MPEG_STREAM_TYPE: |
382 | break; |
383 | case V4L2_CID_MPEG_STREAM_PID_PMT: |
384 | params->ts_pid_pmt = ctrl->val; |
385 | break; |
386 | case V4L2_CID_MPEG_STREAM_PID_AUDIO: |
387 | params->ts_pid_audio = ctrl->val; |
388 | break; |
389 | case V4L2_CID_MPEG_STREAM_PID_VIDEO: |
390 | params->ts_pid_video = ctrl->val; |
391 | break; |
392 | case V4L2_CID_MPEG_STREAM_PID_PCR: |
393 | params->ts_pid_pcr = ctrl->val; |
394 | break; |
395 | case V4L2_CID_MPEG_AUDIO_ENCODING: |
396 | params->au_encoding = ctrl->val; |
397 | break; |
398 | case V4L2_CID_MPEG_AUDIO_L2_BITRATE: |
399 | params->au_l2_bitrate = ctrl->val; |
400 | break; |
401 | case V4L2_CID_MPEG_AUDIO_AC3_BITRATE: |
402 | params->au_ac3_bitrate = ctrl->val; |
403 | break; |
404 | case V4L2_CID_MPEG_AUDIO_SAMPLING_FREQ: |
405 | break; |
406 | case V4L2_CID_MPEG_VIDEO_ENCODING: |
407 | break; |
408 | case V4L2_CID_MPEG_VIDEO_ASPECT: |
409 | params->vi_aspect = ctrl->val; |
410 | break; |
411 | case V4L2_CID_MPEG_VIDEO_BITRATE_MODE: |
412 | params->vi_bitrate_mode = ctrl->val; |
413 | params->vi_bitrate = h->video_bitrate->val / 1000; |
414 | params->vi_bitrate_peak = h->video_bitrate_peak->val / 1000; |
415 | v4l2_ctrl_activate(ctrl: h->video_bitrate_peak, |
416 | active: ctrl->val == V4L2_MPEG_VIDEO_BITRATE_MODE_VBR); |
417 | break; |
418 | default: |
419 | return -EINVAL; |
420 | } |
421 | return 0; |
422 | } |
423 | |
424 | static int saa6752hs_init(struct v4l2_subdev *sd, u32 leading_null_bytes) |
425 | { |
426 | unsigned char buf[9], buf2[4]; |
427 | struct saa6752hs_state *h = to_state(sd); |
428 | struct i2c_client *client = v4l2_get_subdevdata(sd); |
429 | unsigned size; |
430 | u32 crc; |
431 | unsigned char localPAT[256]; |
432 | unsigned char localPMT[256]; |
433 | |
434 | /* Set video format - must be done first as it resets other settings */ |
435 | set_reg8(client, reg: 0x41, val: h->video_format); |
436 | |
437 | /* Set number of lines in input signal */ |
438 | set_reg8(client, reg: 0x40, val: (h->standard & V4L2_STD_525_60) ? 1 : 0); |
439 | |
440 | /* set bitrate */ |
441 | saa6752hs_set_bitrate(client, h); |
442 | |
443 | /* Set GOP structure {3, 13} */ |
444 | set_reg16(client, reg: 0x72, val: 0x030d); |
445 | |
446 | /* Set minimum Q-scale {4} */ |
447 | set_reg8(client, reg: 0x82, val: 0x04); |
448 | |
449 | /* Set maximum Q-scale {12} */ |
450 | set_reg8(client, reg: 0x83, val: 0x0c); |
451 | |
452 | /* Set Output Protocol */ |
453 | set_reg8(client, reg: 0xd0, val: 0x81); |
454 | |
455 | /* Set video output stream format {TS} */ |
456 | set_reg8(client, reg: 0xb0, val: 0x05); |
457 | |
458 | /* Set leading null byte for TS */ |
459 | set_reg16(client, reg: 0xf6, val: leading_null_bytes); |
460 | |
461 | /* compute PAT */ |
462 | memcpy(localPAT, PAT, sizeof(PAT)); |
463 | localPAT[17] = 0xe0 | ((h->params.ts_pid_pmt >> 8) & 0x0f); |
464 | localPAT[18] = h->params.ts_pid_pmt & 0xff; |
465 | crc = crc32_be(crc: ~0, p: &localPAT[7], len: sizeof(PAT) - 7 - 4); |
466 | localPAT[sizeof(PAT) - 4] = (crc >> 24) & 0xFF; |
467 | localPAT[sizeof(PAT) - 3] = (crc >> 16) & 0xFF; |
468 | localPAT[sizeof(PAT) - 2] = (crc >> 8) & 0xFF; |
469 | localPAT[sizeof(PAT) - 1] = crc & 0xFF; |
470 | |
471 | /* compute PMT */ |
472 | if (h->params.au_encoding == V4L2_MPEG_AUDIO_ENCODING_AC3) { |
473 | size = sizeof(PMT_AC3); |
474 | memcpy(localPMT, PMT_AC3, size); |
475 | } else { |
476 | size = sizeof(PMT); |
477 | memcpy(localPMT, PMT, size); |
478 | } |
479 | localPMT[3] = 0x40 | ((h->params.ts_pid_pmt >> 8) & 0x0f); |
480 | localPMT[4] = h->params.ts_pid_pmt & 0xff; |
481 | localPMT[15] = 0xE0 | ((h->params.ts_pid_pcr >> 8) & 0x0F); |
482 | localPMT[16] = h->params.ts_pid_pcr & 0xFF; |
483 | localPMT[20] = 0xE0 | ((h->params.ts_pid_video >> 8) & 0x0F); |
484 | localPMT[21] = h->params.ts_pid_video & 0xFF; |
485 | localPMT[25] = 0xE0 | ((h->params.ts_pid_audio >> 8) & 0x0F); |
486 | localPMT[26] = h->params.ts_pid_audio & 0xFF; |
487 | crc = crc32_be(crc: ~0, p: &localPMT[7], len: size - 7 - 4); |
488 | localPMT[size - 4] = (crc >> 24) & 0xFF; |
489 | localPMT[size - 3] = (crc >> 16) & 0xFF; |
490 | localPMT[size - 2] = (crc >> 8) & 0xFF; |
491 | localPMT[size - 1] = crc & 0xFF; |
492 | |
493 | /* Set Audio PID */ |
494 | set_reg16(client, reg: 0xc1, val: h->params.ts_pid_audio); |
495 | |
496 | /* Set Video PID */ |
497 | set_reg16(client, reg: 0xc0, val: h->params.ts_pid_video); |
498 | |
499 | /* Set PCR PID */ |
500 | set_reg16(client, reg: 0xc4, val: h->params.ts_pid_pcr); |
501 | |
502 | /* Send SI tables */ |
503 | i2c_master_send(client, buf: localPAT, count: sizeof(PAT)); |
504 | i2c_master_send(client, buf: localPMT, count: size); |
505 | |
506 | /* mute then unmute audio. This removes buzzing artefacts */ |
507 | set_reg8(client, reg: 0xa4, val: 1); |
508 | set_reg8(client, reg: 0xa4, val: 0); |
509 | |
510 | /* start it going */ |
511 | saa6752hs_chip_command(client, command: SAA6752HS_COMMAND_START); |
512 | |
513 | /* readout current state */ |
514 | buf[0] = 0xE1; |
515 | buf[1] = 0xA7; |
516 | buf[2] = 0xFE; |
517 | buf[3] = 0x82; |
518 | buf[4] = 0xB0; |
519 | i2c_master_send(client, buf, count: 5); |
520 | i2c_master_recv(client, buf: buf2, count: 4); |
521 | |
522 | /* change aspect ratio */ |
523 | buf[0] = 0xE0; |
524 | buf[1] = 0xA7; |
525 | buf[2] = 0xFE; |
526 | buf[3] = 0x82; |
527 | buf[4] = 0xB0; |
528 | buf[5] = buf2[0]; |
529 | switch (h->params.vi_aspect) { |
530 | case V4L2_MPEG_VIDEO_ASPECT_16x9: |
531 | buf[6] = buf2[1] | 0x40; |
532 | break; |
533 | case V4L2_MPEG_VIDEO_ASPECT_4x3: |
534 | default: |
535 | buf[6] = buf2[1] & 0xBF; |
536 | break; |
537 | } |
538 | buf[7] = buf2[2]; |
539 | buf[8] = buf2[3]; |
540 | i2c_master_send(client, buf, count: 9); |
541 | |
542 | return 0; |
543 | } |
544 | |
545 | static int saa6752hs_get_fmt(struct v4l2_subdev *sd, |
546 | struct v4l2_subdev_state *sd_state, |
547 | struct v4l2_subdev_format *format) |
548 | { |
549 | struct v4l2_mbus_framefmt *f = &format->format; |
550 | struct saa6752hs_state *h = to_state(sd); |
551 | |
552 | if (format->pad) |
553 | return -EINVAL; |
554 | |
555 | if (h->video_format == SAA6752HS_VF_UNKNOWN) |
556 | h->video_format = SAA6752HS_VF_D1; |
557 | f->width = v4l2_format_table[h->video_format].fmt.pix.width; |
558 | f->height = v4l2_format_table[h->video_format].fmt.pix.height; |
559 | f->code = MEDIA_BUS_FMT_FIXED; |
560 | f->field = V4L2_FIELD_INTERLACED; |
561 | f->colorspace = V4L2_COLORSPACE_SMPTE170M; |
562 | return 0; |
563 | } |
564 | |
565 | static int saa6752hs_set_fmt(struct v4l2_subdev *sd, |
566 | struct v4l2_subdev_state *sd_state, |
567 | struct v4l2_subdev_format *format) |
568 | { |
569 | struct v4l2_mbus_framefmt *f = &format->format; |
570 | struct saa6752hs_state *h = to_state(sd); |
571 | int dist_352, dist_480, dist_720; |
572 | |
573 | if (format->pad) |
574 | return -EINVAL; |
575 | |
576 | f->code = MEDIA_BUS_FMT_FIXED; |
577 | |
578 | dist_352 = abs(f->width - 352); |
579 | dist_480 = abs(f->width - 480); |
580 | dist_720 = abs(f->width - 720); |
581 | if (dist_720 < dist_480) { |
582 | f->width = 720; |
583 | f->height = 576; |
584 | } else if (dist_480 < dist_352) { |
585 | f->width = 480; |
586 | f->height = 576; |
587 | } else { |
588 | f->width = 352; |
589 | if (abs(f->height - 576) < abs(f->height - 288)) |
590 | f->height = 576; |
591 | else |
592 | f->height = 288; |
593 | } |
594 | f->field = V4L2_FIELD_INTERLACED; |
595 | f->colorspace = V4L2_COLORSPACE_SMPTE170M; |
596 | |
597 | if (format->which == V4L2_SUBDEV_FORMAT_TRY) |
598 | return 0; |
599 | |
600 | /* |
601 | FIXME: translate and round width/height into EMPRESS |
602 | subsample type: |
603 | |
604 | type | PAL | NTSC |
605 | --------------------------- |
606 | SIF | 352x288 | 352x240 |
607 | 1/2 D1 | 352x576 | 352x480 |
608 | 2/3 D1 | 480x576 | 480x480 |
609 | D1 | 720x576 | 720x480 |
610 | */ |
611 | |
612 | if (f->code != MEDIA_BUS_FMT_FIXED) |
613 | return -EINVAL; |
614 | |
615 | if (f->width == 720) |
616 | h->video_format = SAA6752HS_VF_D1; |
617 | else if (f->width == 480) |
618 | h->video_format = SAA6752HS_VF_2_3_D1; |
619 | else if (f->height == 576) |
620 | h->video_format = SAA6752HS_VF_1_2_D1; |
621 | else |
622 | h->video_format = SAA6752HS_VF_SIF; |
623 | return 0; |
624 | } |
625 | |
626 | static int saa6752hs_s_std(struct v4l2_subdev *sd, v4l2_std_id std) |
627 | { |
628 | struct saa6752hs_state *h = to_state(sd); |
629 | |
630 | h->standard = std; |
631 | return 0; |
632 | } |
633 | |
634 | /* ----------------------------------------------------------------------- */ |
635 | |
636 | static const struct v4l2_ctrl_ops saa6752hs_ctrl_ops = { |
637 | .try_ctrl = saa6752hs_try_ctrl, |
638 | .s_ctrl = saa6752hs_s_ctrl, |
639 | }; |
640 | |
641 | static const struct v4l2_subdev_core_ops saa6752hs_core_ops = { |
642 | .init = saa6752hs_init, |
643 | }; |
644 | |
645 | static const struct v4l2_subdev_video_ops saa6752hs_video_ops = { |
646 | .s_std = saa6752hs_s_std, |
647 | }; |
648 | |
649 | static const struct v4l2_subdev_pad_ops saa6752hs_pad_ops = { |
650 | .get_fmt = saa6752hs_get_fmt, |
651 | .set_fmt = saa6752hs_set_fmt, |
652 | }; |
653 | |
654 | static const struct v4l2_subdev_ops saa6752hs_ops = { |
655 | .core = &saa6752hs_core_ops, |
656 | .video = &saa6752hs_video_ops, |
657 | .pad = &saa6752hs_pad_ops, |
658 | }; |
659 | |
660 | static int saa6752hs_probe(struct i2c_client *client) |
661 | { |
662 | struct saa6752hs_state *h; |
663 | struct v4l2_subdev *sd; |
664 | struct v4l2_ctrl_handler *hdl; |
665 | u8 addr = 0x13; |
666 | u8 data[12]; |
667 | |
668 | v4l_info(client, "chip found @ 0x%x (%s)\n" , |
669 | client->addr << 1, client->adapter->name); |
670 | |
671 | h = devm_kzalloc(dev: &client->dev, size: sizeof(*h), GFP_KERNEL); |
672 | if (h == NULL) |
673 | return -ENOMEM; |
674 | sd = &h->sd; |
675 | v4l2_i2c_subdev_init(sd, client, ops: &saa6752hs_ops); |
676 | |
677 | i2c_master_send(client, buf: &addr, count: 1); |
678 | i2c_master_recv(client, buf: data, count: sizeof(data)); |
679 | h->revision = (data[8] << 8) | data[9]; |
680 | h->has_ac3 = 0; |
681 | if (h->revision == 0x0206) { |
682 | h->has_ac3 = 1; |
683 | v4l_info(client, "supports AC-3\n" ); |
684 | } |
685 | h->params = param_defaults; |
686 | |
687 | hdl = &h->hdl; |
688 | v4l2_ctrl_handler_init(hdl, 14); |
689 | v4l2_ctrl_new_std_menu(hdl, ops: &saa6752hs_ctrl_ops, |
690 | V4L2_CID_MPEG_AUDIO_ENCODING, |
691 | max: h->has_ac3 ? V4L2_MPEG_AUDIO_ENCODING_AC3 : |
692 | V4L2_MPEG_AUDIO_ENCODING_LAYER_2, |
693 | mask: 0x0d, def: V4L2_MPEG_AUDIO_ENCODING_LAYER_2); |
694 | |
695 | v4l2_ctrl_new_std_menu(hdl, ops: &saa6752hs_ctrl_ops, |
696 | V4L2_CID_MPEG_AUDIO_L2_BITRATE, |
697 | max: V4L2_MPEG_AUDIO_L2_BITRATE_384K, |
698 | mask: ~((1 << V4L2_MPEG_AUDIO_L2_BITRATE_256K) | |
699 | (1 << V4L2_MPEG_AUDIO_L2_BITRATE_384K)), |
700 | def: V4L2_MPEG_AUDIO_L2_BITRATE_256K); |
701 | |
702 | if (h->has_ac3) |
703 | v4l2_ctrl_new_std_menu(hdl, ops: &saa6752hs_ctrl_ops, |
704 | V4L2_CID_MPEG_AUDIO_AC3_BITRATE, |
705 | max: V4L2_MPEG_AUDIO_AC3_BITRATE_384K, |
706 | mask: ~((1 << V4L2_MPEG_AUDIO_AC3_BITRATE_256K) | |
707 | (1 << V4L2_MPEG_AUDIO_AC3_BITRATE_384K)), |
708 | def: V4L2_MPEG_AUDIO_AC3_BITRATE_256K); |
709 | |
710 | v4l2_ctrl_new_std_menu(hdl, ops: &saa6752hs_ctrl_ops, |
711 | V4L2_CID_MPEG_AUDIO_SAMPLING_FREQ, |
712 | max: V4L2_MPEG_AUDIO_SAMPLING_FREQ_48000, |
713 | mask: ~(1 << V4L2_MPEG_AUDIO_SAMPLING_FREQ_48000), |
714 | def: V4L2_MPEG_AUDIO_SAMPLING_FREQ_48000); |
715 | |
716 | v4l2_ctrl_new_std_menu(hdl, ops: &saa6752hs_ctrl_ops, |
717 | V4L2_CID_MPEG_VIDEO_ENCODING, |
718 | max: V4L2_MPEG_VIDEO_ENCODING_MPEG_2, |
719 | mask: ~(1 << V4L2_MPEG_VIDEO_ENCODING_MPEG_2), |
720 | def: V4L2_MPEG_VIDEO_ENCODING_MPEG_2); |
721 | |
722 | v4l2_ctrl_new_std_menu(hdl, ops: &saa6752hs_ctrl_ops, |
723 | V4L2_CID_MPEG_VIDEO_ASPECT, |
724 | max: V4L2_MPEG_VIDEO_ASPECT_16x9, mask: 0x01, |
725 | def: V4L2_MPEG_VIDEO_ASPECT_4x3); |
726 | |
727 | h->video_bitrate_peak = v4l2_ctrl_new_std(hdl, ops: &saa6752hs_ctrl_ops, |
728 | V4L2_CID_MPEG_VIDEO_BITRATE_PEAK, |
729 | min: 1000000, max: 27000000, step: 1000, def: 8000000); |
730 | |
731 | v4l2_ctrl_new_std_menu(hdl, ops: &saa6752hs_ctrl_ops, |
732 | V4L2_CID_MPEG_STREAM_TYPE, |
733 | max: V4L2_MPEG_STREAM_TYPE_MPEG2_TS, |
734 | mask: ~(1 << V4L2_MPEG_STREAM_TYPE_MPEG2_TS), |
735 | def: V4L2_MPEG_STREAM_TYPE_MPEG2_TS); |
736 | |
737 | h->video_bitrate_mode = v4l2_ctrl_new_std_menu(hdl, ops: &saa6752hs_ctrl_ops, |
738 | V4L2_CID_MPEG_VIDEO_BITRATE_MODE, |
739 | max: V4L2_MPEG_VIDEO_BITRATE_MODE_CBR, mask: 0, |
740 | def: V4L2_MPEG_VIDEO_BITRATE_MODE_VBR); |
741 | h->video_bitrate = v4l2_ctrl_new_std(hdl, ops: &saa6752hs_ctrl_ops, |
742 | V4L2_CID_MPEG_VIDEO_BITRATE, min: 1000000, max: 27000000, step: 1000, def: 6000000); |
743 | v4l2_ctrl_new_std(hdl, ops: &saa6752hs_ctrl_ops, |
744 | V4L2_CID_MPEG_STREAM_PID_PMT, min: 0, max: (1 << 14) - 1, step: 1, def: 16); |
745 | v4l2_ctrl_new_std(hdl, ops: &saa6752hs_ctrl_ops, |
746 | V4L2_CID_MPEG_STREAM_PID_AUDIO, min: 0, max: (1 << 14) - 1, step: 1, def: 260); |
747 | v4l2_ctrl_new_std(hdl, ops: &saa6752hs_ctrl_ops, |
748 | V4L2_CID_MPEG_STREAM_PID_VIDEO, min: 0, max: (1 << 14) - 1, step: 1, def: 256); |
749 | v4l2_ctrl_new_std(hdl, ops: &saa6752hs_ctrl_ops, |
750 | V4L2_CID_MPEG_STREAM_PID_PCR, min: 0, max: (1 << 14) - 1, step: 1, def: 259); |
751 | sd->ctrl_handler = hdl; |
752 | if (hdl->error) { |
753 | int err = hdl->error; |
754 | |
755 | v4l2_ctrl_handler_free(hdl); |
756 | return err; |
757 | } |
758 | v4l2_ctrl_cluster(ncontrols: 3, controls: &h->video_bitrate_mode); |
759 | v4l2_ctrl_handler_setup(hdl); |
760 | h->standard = 0; /* Assume 625 input lines */ |
761 | return 0; |
762 | } |
763 | |
764 | static void saa6752hs_remove(struct i2c_client *client) |
765 | { |
766 | struct v4l2_subdev *sd = i2c_get_clientdata(client); |
767 | |
768 | v4l2_device_unregister_subdev(sd); |
769 | v4l2_ctrl_handler_free(hdl: &to_state(sd)->hdl); |
770 | } |
771 | |
772 | static const struct i2c_device_id saa6752hs_id[] = { |
773 | { "saa6752hs" , 0 }, |
774 | { } |
775 | }; |
776 | MODULE_DEVICE_TABLE(i2c, saa6752hs_id); |
777 | |
778 | static struct i2c_driver saa6752hs_driver = { |
779 | .driver = { |
780 | .name = "saa6752hs" , |
781 | }, |
782 | .probe = saa6752hs_probe, |
783 | .remove = saa6752hs_remove, |
784 | .id_table = saa6752hs_id, |
785 | }; |
786 | |
787 | module_i2c_driver(saa6752hs_driver); |
788 | |