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 <linux/init.h> 37 #include <linux/crc32.h> 38 #include <media/v4l2-device.h> 39 #include <media/v4l2-ctrls.h> 40 #include <media/v4l2-common.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 struct v4l2_ctrl_handler hdl; 96 struct { /* video bitrate mode control cluster */ 97 struct v4l2_ctrl *video_bitrate_mode; 98 struct v4l2_ctrl *video_bitrate; 99 struct v4l2_ctrl *video_bitrate_peak; 100 }; 101 u32 revision; 102 int has_ac3; 103 struct saa6752hs_mpeg_params params; 104 enum saa6752hs_videoformat video_format; 105 v4l2_std_id standard; 106 }; 107 108 enum saa6752hs_command { 109 SAA6752HS_COMMAND_RESET = 0, 110 SAA6752HS_COMMAND_STOP = 1, 111 SAA6752HS_COMMAND_START = 2, 112 SAA6752HS_COMMAND_PAUSE = 3, 113 SAA6752HS_COMMAND_RECONFIGURE = 4, 114 SAA6752HS_COMMAND_SLEEP = 5, 115 SAA6752HS_COMMAND_RECONFIGURE_FORCE = 6, 116 117 SAA6752HS_COMMAND_MAX 118 }; 119 120 static inline struct saa6752hs_state *to_state(struct v4l2_subdev *sd) 121 { 122 return container_of(sd, struct saa6752hs_state, sd); 123 } 124 125 /* ---------------------------------------------------------------------- */ 126 127 static const u8 PAT[] = { 128 0xc2, /* i2c register */ 129 0x00, /* table number for encoder */ 130 131 0x47, /* sync */ 132 0x40, 0x00, /* transport_error_indicator(0), payload_unit_start(1), transport_priority(0), pid(0) */ 133 0x10, /* transport_scrambling_control(00), adaptation_field_control(01), continuity_counter(0) */ 134 135 0x00, /* PSI pointer to start of table */ 136 137 0x00, /* tid(0) */ 138 0xb0, 0x0d, /* section_syntax_indicator(1), section_length(13) */ 139 140 0x00, 0x01, /* transport_stream_id(1) */ 141 142 0xc1, /* version_number(0), current_next_indicator(1) */ 143 144 0x00, 0x00, /* section_number(0), last_section_number(0) */ 145 146 0x00, 0x01, /* program_number(1) */ 147 148 0xe0, 0x00, /* PMT PID */ 149 150 0x00, 0x00, 0x00, 0x00 /* CRC32 */ 151 }; 152 153 static const u8 PMT[] = { 154 0xc2, /* i2c register */ 155 0x01, /* table number for encoder */ 156 157 0x47, /* sync */ 158 0x40, 0x00, /* transport_error_indicator(0), payload_unit_start(1), transport_priority(0), pid */ 159 0x10, /* transport_scrambling_control(00), adaptation_field_control(01), continuity_counter(0) */ 160 161 0x00, /* PSI pointer to start of table */ 162 163 0x02, /* tid(2) */ 164 0xb0, 0x17, /* section_syntax_indicator(1), section_length(23) */ 165 166 0x00, 0x01, /* program_number(1) */ 167 168 0xc1, /* version_number(0), current_next_indicator(1) */ 169 170 0x00, 0x00, /* section_number(0), last_section_number(0) */ 171 172 0xe0, 0x00, /* PCR_PID */ 173 174 0xf0, 0x00, /* program_info_length(0) */ 175 176 0x02, 0xe0, 0x00, 0xf0, 0x00, /* video stream type(2), pid */ 177 0x04, 0xe0, 0x00, 0xf0, 0x00, /* audio stream type(4), pid */ 178 179 0x00, 0x00, 0x00, 0x00 /* CRC32 */ 180 }; 181 182 static const u8 PMT_AC3[] = { 183 0xc2, /* i2c register */ 184 0x01, /* table number for encoder(1) */ 185 0x47, /* sync */ 186 187 0x40, /* transport_error_indicator(0), payload_unit_start(1), transport_priority(0) */ 188 0x10, /* PMT PID (0x0010) */ 189 0x10, /* transport_scrambling_control(00), adaptation_field_control(01), continuity_counter(0) */ 190 191 0x00, /* PSI pointer to start of table */ 192 193 0x02, /* TID (2) */ 194 0xb0, 0x1a, /* section_syntax_indicator(1), section_length(26) */ 195 196 0x00, 0x01, /* program_number(1) */ 197 198 0xc1, /* version_number(0), current_next_indicator(1) */ 199 200 0x00, 0x00, /* section_number(0), last_section_number(0) */ 201 202 0xe1, 0x04, /* PCR_PID (0x0104) */ 203 204 0xf0, 0x00, /* program_info_length(0) */ 205 206 0x02, 0xe1, 0x00, 0xf0, 0x00, /* video stream type(2), pid */ 207 0x06, 0xe1, 0x03, 0xf0, 0x03, /* audio stream type(6), pid */ 208 0x6a, /* AC3 */ 209 0x01, /* Descriptor_length(1) */ 210 0x00, /* component_type_flag(0), bsid_flag(0), mainid_flag(0), asvc_flag(0), reserved flags(0) */ 211 212 0xED, 0xDE, 0x2D, 0xF3 /* CRC32 BE */ 213 }; 214 215 static const struct saa6752hs_mpeg_params param_defaults = 216 { 217 .ts_pid_pmt = 16, 218 .ts_pid_video = 260, 219 .ts_pid_audio = 256, 220 .ts_pid_pcr = 259, 221 222 .vi_aspect = V4L2_MPEG_VIDEO_ASPECT_4x3, 223 .vi_bitrate = 4000, 224 .vi_bitrate_peak = 6000, 225 .vi_bitrate_mode = V4L2_MPEG_VIDEO_BITRATE_MODE_VBR, 226 227 .au_encoding = V4L2_MPEG_AUDIO_ENCODING_LAYER_2, 228 .au_l2_bitrate = V4L2_MPEG_AUDIO_L2_BITRATE_256K, 229 .au_ac3_bitrate = V4L2_MPEG_AUDIO_AC3_BITRATE_256K, 230 }; 231 232 /* ---------------------------------------------------------------------- */ 233 234 static int saa6752hs_chip_command(struct i2c_client *client, 235 enum saa6752hs_command command) 236 { 237 unsigned char buf[3]; 238 unsigned long timeout; 239 int status = 0; 240 241 /* execute the command */ 242 switch(command) { 243 case SAA6752HS_COMMAND_RESET: 244 buf[0] = 0x00; 245 break; 246 247 case SAA6752HS_COMMAND_STOP: 248 buf[0] = 0x03; 249 break; 250 251 case SAA6752HS_COMMAND_START: 252 buf[0] = 0x02; 253 break; 254 255 case SAA6752HS_COMMAND_PAUSE: 256 buf[0] = 0x04; 257 break; 258 259 case SAA6752HS_COMMAND_RECONFIGURE: 260 buf[0] = 0x05; 261 break; 262 263 case SAA6752HS_COMMAND_SLEEP: 264 buf[0] = 0x06; 265 break; 266 267 case SAA6752HS_COMMAND_RECONFIGURE_FORCE: 268 buf[0] = 0x07; 269 break; 270 271 default: 272 return -EINVAL; 273 } 274 275 /* set it and wait for it to be so */ 276 i2c_master_send(client, buf, 1); 277 timeout = jiffies + HZ * 3; 278 for (;;) { 279 /* get the current status */ 280 buf[0] = 0x10; 281 i2c_master_send(client, buf, 1); 282 i2c_master_recv(client, buf, 1); 283 284 if (!(buf[0] & 0x20)) 285 break; 286 if (time_after(jiffies,timeout)) { 287 status = -ETIMEDOUT; 288 break; 289 } 290 291 msleep(10); 292 } 293 294 /* delay a bit to let encoder settle */ 295 msleep(50); 296 297 return status; 298 } 299 300 301 static inline void set_reg8(struct i2c_client *client, uint8_t reg, uint8_t val) 302 { 303 u8 buf[2]; 304 305 buf[0] = reg; 306 buf[1] = val; 307 i2c_master_send(client, buf, 2); 308 } 309 310 static inline void set_reg16(struct i2c_client *client, uint8_t reg, uint16_t val) 311 { 312 u8 buf[3]; 313 314 buf[0] = reg; 315 buf[1] = val >> 8; 316 buf[2] = val & 0xff; 317 i2c_master_send(client, buf, 3); 318 } 319 320 static int saa6752hs_set_bitrate(struct i2c_client *client, 321 struct saa6752hs_state *h) 322 { 323 struct saa6752hs_mpeg_params *params = &h->params; 324 int tot_bitrate; 325 int is_384k; 326 327 /* set the bitrate mode */ 328 set_reg8(client, 0x71, 329 params->vi_bitrate_mode != V4L2_MPEG_VIDEO_BITRATE_MODE_VBR); 330 331 /* set the video bitrate */ 332 if (params->vi_bitrate_mode == V4L2_MPEG_VIDEO_BITRATE_MODE_VBR) { 333 /* set the target bitrate */ 334 set_reg16(client, 0x80, params->vi_bitrate); 335 336 /* set the max bitrate */ 337 set_reg16(client, 0x81, params->vi_bitrate_peak); 338 tot_bitrate = params->vi_bitrate_peak; 339 } else { 340 /* set the target bitrate (no max bitrate for CBR) */ 341 set_reg16(client, 0x81, params->vi_bitrate); 342 tot_bitrate = params->vi_bitrate; 343 } 344 345 /* set the audio encoding */ 346 set_reg8(client, 0x93, 347 params->au_encoding == V4L2_MPEG_AUDIO_ENCODING_AC3); 348 349 /* set the audio bitrate */ 350 if (params->au_encoding == V4L2_MPEG_AUDIO_ENCODING_AC3) 351 is_384k = V4L2_MPEG_AUDIO_AC3_BITRATE_384K == params->au_ac3_bitrate; 352 else 353 is_384k = V4L2_MPEG_AUDIO_L2_BITRATE_384K == params->au_l2_bitrate; 354 set_reg8(client, 0x94, is_384k); 355 tot_bitrate += is_384k ? 384 : 256; 356 357 /* Note: the total max bitrate is determined by adding the video and audio 358 bitrates together and also adding an extra 768kbit/s to stay on the 359 safe side. If more control should be required, then an extra MPEG control 360 should be added. */ 361 tot_bitrate += 768; 362 if (tot_bitrate > MPEG_TOTAL_TARGET_BITRATE_MAX) 363 tot_bitrate = MPEG_TOTAL_TARGET_BITRATE_MAX; 364 365 /* set the total bitrate */ 366 set_reg16(client, 0xb1, tot_bitrate); 367 return 0; 368 } 369 370 static int saa6752hs_try_ctrl(struct v4l2_ctrl *ctrl) 371 { 372 struct saa6752hs_state *h = 373 container_of(ctrl->handler, struct saa6752hs_state, hdl); 374 375 switch (ctrl->id) { 376 case V4L2_CID_MPEG_VIDEO_BITRATE_MODE: 377 /* peak bitrate shall be >= normal bitrate */ 378 if (ctrl->val == V4L2_MPEG_VIDEO_BITRATE_MODE_VBR && 379 h->video_bitrate_peak->val < h->video_bitrate->val) 380 h->video_bitrate_peak->val = h->video_bitrate->val; 381 break; 382 } 383 return 0; 384 } 385 386 static int saa6752hs_s_ctrl(struct v4l2_ctrl *ctrl) 387 { 388 struct saa6752hs_state *h = 389 container_of(ctrl->handler, struct saa6752hs_state, hdl); 390 struct saa6752hs_mpeg_params *params = &h->params; 391 392 switch (ctrl->id) { 393 case V4L2_CID_MPEG_STREAM_TYPE: 394 break; 395 case V4L2_CID_MPEG_STREAM_PID_PMT: 396 params->ts_pid_pmt = ctrl->val; 397 break; 398 case V4L2_CID_MPEG_STREAM_PID_AUDIO: 399 params->ts_pid_audio = ctrl->val; 400 break; 401 case V4L2_CID_MPEG_STREAM_PID_VIDEO: 402 params->ts_pid_video = ctrl->val; 403 break; 404 case V4L2_CID_MPEG_STREAM_PID_PCR: 405 params->ts_pid_pcr = ctrl->val; 406 break; 407 case V4L2_CID_MPEG_AUDIO_ENCODING: 408 params->au_encoding = ctrl->val; 409 break; 410 case V4L2_CID_MPEG_AUDIO_L2_BITRATE: 411 params->au_l2_bitrate = ctrl->val; 412 break; 413 case V4L2_CID_MPEG_AUDIO_AC3_BITRATE: 414 params->au_ac3_bitrate = ctrl->val; 415 break; 416 case V4L2_CID_MPEG_AUDIO_SAMPLING_FREQ: 417 break; 418 case V4L2_CID_MPEG_VIDEO_ENCODING: 419 break; 420 case V4L2_CID_MPEG_VIDEO_ASPECT: 421 params->vi_aspect = ctrl->val; 422 break; 423 case V4L2_CID_MPEG_VIDEO_BITRATE_MODE: 424 params->vi_bitrate_mode = ctrl->val; 425 params->vi_bitrate = h->video_bitrate->val / 1000; 426 params->vi_bitrate_peak = h->video_bitrate_peak->val / 1000; 427 v4l2_ctrl_activate(h->video_bitrate_peak, 428 ctrl->val == V4L2_MPEG_VIDEO_BITRATE_MODE_VBR); 429 break; 430 default: 431 return -EINVAL; 432 } 433 return 0; 434 } 435 436 static int saa6752hs_init(struct v4l2_subdev *sd, u32 leading_null_bytes) 437 { 438 unsigned char buf[9], buf2[4]; 439 struct saa6752hs_state *h = to_state(sd); 440 struct i2c_client *client = v4l2_get_subdevdata(sd); 441 unsigned size; 442 u32 crc; 443 unsigned char localPAT[256]; 444 unsigned char localPMT[256]; 445 446 /* Set video format - must be done first as it resets other settings */ 447 set_reg8(client, 0x41, h->video_format); 448 449 /* Set number of lines in input signal */ 450 set_reg8(client, 0x40, (h->standard & V4L2_STD_525_60) ? 1 : 0); 451 452 /* set bitrate */ 453 saa6752hs_set_bitrate(client, h); 454 455 /* Set GOP structure {3, 13} */ 456 set_reg16(client, 0x72, 0x030d); 457 458 /* Set minimum Q-scale {4} */ 459 set_reg8(client, 0x82, 0x04); 460 461 /* Set maximum Q-scale {12} */ 462 set_reg8(client, 0x83, 0x0c); 463 464 /* Set Output Protocol */ 465 set_reg8(client, 0xd0, 0x81); 466 467 /* Set video output stream format {TS} */ 468 set_reg8(client, 0xb0, 0x05); 469 470 /* Set leading null byte for TS */ 471 set_reg16(client, 0xf6, leading_null_bytes); 472 473 /* compute PAT */ 474 memcpy(localPAT, PAT, sizeof(PAT)); 475 localPAT[17] = 0xe0 | ((h->params.ts_pid_pmt >> 8) & 0x0f); 476 localPAT[18] = h->params.ts_pid_pmt & 0xff; 477 crc = crc32_be(~0, &localPAT[7], sizeof(PAT) - 7 - 4); 478 localPAT[sizeof(PAT) - 4] = (crc >> 24) & 0xFF; 479 localPAT[sizeof(PAT) - 3] = (crc >> 16) & 0xFF; 480 localPAT[sizeof(PAT) - 2] = (crc >> 8) & 0xFF; 481 localPAT[sizeof(PAT) - 1] = crc & 0xFF; 482 483 /* compute PMT */ 484 if (h->params.au_encoding == V4L2_MPEG_AUDIO_ENCODING_AC3) { 485 size = sizeof(PMT_AC3); 486 memcpy(localPMT, PMT_AC3, size); 487 } else { 488 size = sizeof(PMT); 489 memcpy(localPMT, PMT, size); 490 } 491 localPMT[3] = 0x40 | ((h->params.ts_pid_pmt >> 8) & 0x0f); 492 localPMT[4] = h->params.ts_pid_pmt & 0xff; 493 localPMT[15] = 0xE0 | ((h->params.ts_pid_pcr >> 8) & 0x0F); 494 localPMT[16] = h->params.ts_pid_pcr & 0xFF; 495 localPMT[20] = 0xE0 | ((h->params.ts_pid_video >> 8) & 0x0F); 496 localPMT[21] = h->params.ts_pid_video & 0xFF; 497 localPMT[25] = 0xE0 | ((h->params.ts_pid_audio >> 8) & 0x0F); 498 localPMT[26] = h->params.ts_pid_audio & 0xFF; 499 crc = crc32_be(~0, &localPMT[7], size - 7 - 4); 500 localPMT[size - 4] = (crc >> 24) & 0xFF; 501 localPMT[size - 3] = (crc >> 16) & 0xFF; 502 localPMT[size - 2] = (crc >> 8) & 0xFF; 503 localPMT[size - 1] = crc & 0xFF; 504 505 /* Set Audio PID */ 506 set_reg16(client, 0xc1, h->params.ts_pid_audio); 507 508 /* Set Video PID */ 509 set_reg16(client, 0xc0, h->params.ts_pid_video); 510 511 /* Set PCR PID */ 512 set_reg16(client, 0xc4, h->params.ts_pid_pcr); 513 514 /* Send SI tables */ 515 i2c_master_send(client, localPAT, sizeof(PAT)); 516 i2c_master_send(client, localPMT, size); 517 518 /* mute then unmute audio. This removes buzzing artefacts */ 519 set_reg8(client, 0xa4, 1); 520 set_reg8(client, 0xa4, 0); 521 522 /* start it going */ 523 saa6752hs_chip_command(client, SAA6752HS_COMMAND_START); 524 525 /* readout current state */ 526 buf[0] = 0xE1; 527 buf[1] = 0xA7; 528 buf[2] = 0xFE; 529 buf[3] = 0x82; 530 buf[4] = 0xB0; 531 i2c_master_send(client, buf, 5); 532 i2c_master_recv(client, buf2, 4); 533 534 /* change aspect ratio */ 535 buf[0] = 0xE0; 536 buf[1] = 0xA7; 537 buf[2] = 0xFE; 538 buf[3] = 0x82; 539 buf[4] = 0xB0; 540 buf[5] = buf2[0]; 541 switch (h->params.vi_aspect) { 542 case V4L2_MPEG_VIDEO_ASPECT_16x9: 543 buf[6] = buf2[1] | 0x40; 544 break; 545 case V4L2_MPEG_VIDEO_ASPECT_4x3: 546 default: 547 buf[6] = buf2[1] & 0xBF; 548 break; 549 } 550 buf[7] = buf2[2]; 551 buf[8] = buf2[3]; 552 i2c_master_send(client, buf, 9); 553 554 return 0; 555 } 556 557 static int saa6752hs_get_fmt(struct v4l2_subdev *sd, 558 struct v4l2_subdev_pad_config *cfg, 559 struct v4l2_subdev_format *format) 560 { 561 struct v4l2_mbus_framefmt *f = &format->format; 562 struct saa6752hs_state *h = to_state(sd); 563 564 if (format->pad) 565 return -EINVAL; 566 567 if (h->video_format == SAA6752HS_VF_UNKNOWN) 568 h->video_format = SAA6752HS_VF_D1; 569 f->width = v4l2_format_table[h->video_format].fmt.pix.width; 570 f->height = v4l2_format_table[h->video_format].fmt.pix.height; 571 f->code = MEDIA_BUS_FMT_FIXED; 572 f->field = V4L2_FIELD_INTERLACED; 573 f->colorspace = V4L2_COLORSPACE_SMPTE170M; 574 return 0; 575 } 576 577 static int saa6752hs_set_fmt(struct v4l2_subdev *sd, 578 struct v4l2_subdev_pad_config *cfg, 579 struct v4l2_subdev_format *format) 580 { 581 struct v4l2_mbus_framefmt *f = &format->format; 582 struct saa6752hs_state *h = to_state(sd); 583 int dist_352, dist_480, dist_720; 584 585 if (format->pad) 586 return -EINVAL; 587 588 f->code = MEDIA_BUS_FMT_FIXED; 589 590 dist_352 = abs(f->width - 352); 591 dist_480 = abs(f->width - 480); 592 dist_720 = abs(f->width - 720); 593 if (dist_720 < dist_480) { 594 f->width = 720; 595 f->height = 576; 596 } else if (dist_480 < dist_352) { 597 f->width = 480; 598 f->height = 576; 599 } else { 600 f->width = 352; 601 if (abs(f->height - 576) < abs(f->height - 288)) 602 f->height = 576; 603 else 604 f->height = 288; 605 } 606 f->field = V4L2_FIELD_INTERLACED; 607 f->colorspace = V4L2_COLORSPACE_SMPTE170M; 608 609 if (format->which == V4L2_SUBDEV_FORMAT_TRY) { 610 cfg->try_fmt = *f; 611 return 0; 612 } 613 614 /* 615 FIXME: translate and round width/height into EMPRESS 616 subsample type: 617 618 type | PAL | NTSC 619 --------------------------- 620 SIF | 352x288 | 352x240 621 1/2 D1 | 352x576 | 352x480 622 2/3 D1 | 480x576 | 480x480 623 D1 | 720x576 | 720x480 624 */ 625 626 if (f->code != MEDIA_BUS_FMT_FIXED) 627 return -EINVAL; 628 629 if (f->width == 720) 630 h->video_format = SAA6752HS_VF_D1; 631 else if (f->width == 480) 632 h->video_format = SAA6752HS_VF_2_3_D1; 633 else if (f->height == 576) 634 h->video_format = SAA6752HS_VF_1_2_D1; 635 else 636 h->video_format = SAA6752HS_VF_SIF; 637 return 0; 638 } 639 640 static int saa6752hs_s_std(struct v4l2_subdev *sd, v4l2_std_id std) 641 { 642 struct saa6752hs_state *h = to_state(sd); 643 644 h->standard = std; 645 return 0; 646 } 647 648 /* ----------------------------------------------------------------------- */ 649 650 static const struct v4l2_ctrl_ops saa6752hs_ctrl_ops = { 651 .try_ctrl = saa6752hs_try_ctrl, 652 .s_ctrl = saa6752hs_s_ctrl, 653 }; 654 655 static const struct v4l2_subdev_core_ops saa6752hs_core_ops = { 656 .init = saa6752hs_init, 657 }; 658 659 static const struct v4l2_subdev_video_ops saa6752hs_video_ops = { 660 .s_std = saa6752hs_s_std, 661 }; 662 663 static const struct v4l2_subdev_pad_ops saa6752hs_pad_ops = { 664 .get_fmt = saa6752hs_get_fmt, 665 .set_fmt = saa6752hs_set_fmt, 666 }; 667 668 static const struct v4l2_subdev_ops saa6752hs_ops = { 669 .core = &saa6752hs_core_ops, 670 .video = &saa6752hs_video_ops, 671 .pad = &saa6752hs_pad_ops, 672 }; 673 674 static int saa6752hs_probe(struct i2c_client *client, 675 const struct i2c_device_id *id) 676 { 677 struct saa6752hs_state *h; 678 struct v4l2_subdev *sd; 679 struct v4l2_ctrl_handler *hdl; 680 u8 addr = 0x13; 681 u8 data[12]; 682 683 v4l_info(client, "chip found @ 0x%x (%s)\n", 684 client->addr << 1, client->adapter->name); 685 686 h = devm_kzalloc(&client->dev, sizeof(*h), GFP_KERNEL); 687 if (h == NULL) 688 return -ENOMEM; 689 sd = &h->sd; 690 v4l2_i2c_subdev_init(sd, client, &saa6752hs_ops); 691 692 i2c_master_send(client, &addr, 1); 693 i2c_master_recv(client, data, sizeof(data)); 694 h->revision = (data[8] << 8) | data[9]; 695 h->has_ac3 = 0; 696 if (h->revision == 0x0206) { 697 h->has_ac3 = 1; 698 v4l_info(client, "supports AC-3\n"); 699 } 700 h->params = param_defaults; 701 702 hdl = &h->hdl; 703 v4l2_ctrl_handler_init(hdl, 14); 704 v4l2_ctrl_new_std_menu(hdl, &saa6752hs_ctrl_ops, 705 V4L2_CID_MPEG_AUDIO_ENCODING, 706 h->has_ac3 ? V4L2_MPEG_AUDIO_ENCODING_AC3 : 707 V4L2_MPEG_AUDIO_ENCODING_LAYER_2, 708 0x0d, V4L2_MPEG_AUDIO_ENCODING_LAYER_2); 709 710 v4l2_ctrl_new_std_menu(hdl, &saa6752hs_ctrl_ops, 711 V4L2_CID_MPEG_AUDIO_L2_BITRATE, 712 V4L2_MPEG_AUDIO_L2_BITRATE_384K, 713 ~((1 << V4L2_MPEG_AUDIO_L2_BITRATE_256K) | 714 (1 << V4L2_MPEG_AUDIO_L2_BITRATE_384K)), 715 V4L2_MPEG_AUDIO_L2_BITRATE_256K); 716 717 if (h->has_ac3) 718 v4l2_ctrl_new_std_menu(hdl, &saa6752hs_ctrl_ops, 719 V4L2_CID_MPEG_AUDIO_AC3_BITRATE, 720 V4L2_MPEG_AUDIO_AC3_BITRATE_384K, 721 ~((1 << V4L2_MPEG_AUDIO_AC3_BITRATE_256K) | 722 (1 << V4L2_MPEG_AUDIO_AC3_BITRATE_384K)), 723 V4L2_MPEG_AUDIO_AC3_BITRATE_256K); 724 725 v4l2_ctrl_new_std_menu(hdl, &saa6752hs_ctrl_ops, 726 V4L2_CID_MPEG_AUDIO_SAMPLING_FREQ, 727 V4L2_MPEG_AUDIO_SAMPLING_FREQ_48000, 728 ~(1 << V4L2_MPEG_AUDIO_SAMPLING_FREQ_48000), 729 V4L2_MPEG_AUDIO_SAMPLING_FREQ_48000); 730 731 v4l2_ctrl_new_std_menu(hdl, &saa6752hs_ctrl_ops, 732 V4L2_CID_MPEG_VIDEO_ENCODING, 733 V4L2_MPEG_VIDEO_ENCODING_MPEG_2, 734 ~(1 << V4L2_MPEG_VIDEO_ENCODING_MPEG_2), 735 V4L2_MPEG_VIDEO_ENCODING_MPEG_2); 736 737 v4l2_ctrl_new_std_menu(hdl, &saa6752hs_ctrl_ops, 738 V4L2_CID_MPEG_VIDEO_ASPECT, 739 V4L2_MPEG_VIDEO_ASPECT_16x9, 0x01, 740 V4L2_MPEG_VIDEO_ASPECT_4x3); 741 742 h->video_bitrate_peak = v4l2_ctrl_new_std(hdl, &saa6752hs_ctrl_ops, 743 V4L2_CID_MPEG_VIDEO_BITRATE_PEAK, 744 1000000, 27000000, 1000, 8000000); 745 746 v4l2_ctrl_new_std_menu(hdl, &saa6752hs_ctrl_ops, 747 V4L2_CID_MPEG_STREAM_TYPE, 748 V4L2_MPEG_STREAM_TYPE_MPEG2_TS, 749 ~(1 << V4L2_MPEG_STREAM_TYPE_MPEG2_TS), 750 V4L2_MPEG_STREAM_TYPE_MPEG2_TS); 751 752 h->video_bitrate_mode = v4l2_ctrl_new_std_menu(hdl, &saa6752hs_ctrl_ops, 753 V4L2_CID_MPEG_VIDEO_BITRATE_MODE, 754 V4L2_MPEG_VIDEO_BITRATE_MODE_CBR, 0, 755 V4L2_MPEG_VIDEO_BITRATE_MODE_VBR); 756 h->video_bitrate = v4l2_ctrl_new_std(hdl, &saa6752hs_ctrl_ops, 757 V4L2_CID_MPEG_VIDEO_BITRATE, 1000000, 27000000, 1000, 6000000); 758 v4l2_ctrl_new_std(hdl, &saa6752hs_ctrl_ops, 759 V4L2_CID_MPEG_STREAM_PID_PMT, 0, (1 << 14) - 1, 1, 16); 760 v4l2_ctrl_new_std(hdl, &saa6752hs_ctrl_ops, 761 V4L2_CID_MPEG_STREAM_PID_AUDIO, 0, (1 << 14) - 1, 1, 260); 762 v4l2_ctrl_new_std(hdl, &saa6752hs_ctrl_ops, 763 V4L2_CID_MPEG_STREAM_PID_VIDEO, 0, (1 << 14) - 1, 1, 256); 764 v4l2_ctrl_new_std(hdl, &saa6752hs_ctrl_ops, 765 V4L2_CID_MPEG_STREAM_PID_PCR, 0, (1 << 14) - 1, 1, 259); 766 sd->ctrl_handler = hdl; 767 if (hdl->error) { 768 int err = hdl->error; 769 770 v4l2_ctrl_handler_free(hdl); 771 return err; 772 } 773 v4l2_ctrl_cluster(3, &h->video_bitrate_mode); 774 v4l2_ctrl_handler_setup(hdl); 775 h->standard = 0; /* Assume 625 input lines */ 776 return 0; 777 } 778 779 static int saa6752hs_remove(struct i2c_client *client) 780 { 781 struct v4l2_subdev *sd = i2c_get_clientdata(client); 782 783 v4l2_device_unregister_subdev(sd); 784 v4l2_ctrl_handler_free(&to_state(sd)->hdl); 785 return 0; 786 } 787 788 static const struct i2c_device_id saa6752hs_id[] = { 789 { "saa6752hs", 0 }, 790 { } 791 }; 792 MODULE_DEVICE_TABLE(i2c, saa6752hs_id); 793 794 static struct i2c_driver saa6752hs_driver = { 795 .driver = { 796 .name = "saa6752hs", 797 }, 798 .probe = saa6752hs_probe, 799 .remove = saa6752hs_remove, 800 .id_table = saa6752hs_id, 801 }; 802 803 module_i2c_driver(saa6752hs_driver); 804