1 /* 2 * 3 * device driver for philips saa7134 based TV cards 4 * tv audio decoder (fm stereo, nicam, ...) 5 * 6 * (c) 2001-03 Gerd Knorr <kraxel@bytesex.org> [SuSE Labs] 7 * 8 * This program is free software; you can redistribute it and/or modify 9 * it under the terms of the GNU General Public License as published by 10 * the Free Software Foundation; either version 2 of the License, or 11 * (at your option) any later version. 12 * 13 * This program is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 * GNU General Public License for more details. 17 */ 18 19 #include "saa7134.h" 20 #include "saa7134-reg.h" 21 22 #include <linux/init.h> 23 #include <linux/list.h> 24 #include <linux/module.h> 25 #include <linux/kernel.h> 26 #include <linux/kthread.h> 27 #include <linux/delay.h> 28 #include <linux/freezer.h> 29 #include <asm/div64.h> 30 31 /* ------------------------------------------------------------------ */ 32 33 static unsigned int audio_debug; 34 module_param(audio_debug, int, 0644); 35 MODULE_PARM_DESC(audio_debug,"enable debug messages [tv audio]"); 36 37 static unsigned int audio_ddep; 38 module_param(audio_ddep, int, 0644); 39 MODULE_PARM_DESC(audio_ddep,"audio ddep overwrite"); 40 41 static int audio_clock_override = UNSET; 42 module_param(audio_clock_override, int, 0644); 43 44 static int audio_clock_tweak; 45 module_param(audio_clock_tweak, int, 0644); 46 MODULE_PARM_DESC(audio_clock_tweak, "Audio clock tick fine tuning for cards with audio crystal that's slightly off (range [-1024 .. 1024])"); 47 48 #define audio_dbg(level, fmt, arg...) do { \ 49 if (audio_debug >= level) \ 50 printk(KERN_DEBUG pr_fmt("audio: " fmt), ## arg); \ 51 } while (0) 52 53 /* msecs */ 54 #define SCAN_INITIAL_DELAY 1000 55 #define SCAN_SAMPLE_DELAY 200 56 #define SCAN_SUBCARRIER_DELAY 2000 57 58 /* ------------------------------------------------------------------ */ 59 /* saa7134 code */ 60 61 static struct mainscan { 62 char *name; 63 v4l2_std_id std; 64 int carr; 65 } mainscan[] = { 66 { 67 .name = "MN", 68 .std = V4L2_STD_MN, 69 .carr = 4500, 70 },{ 71 .name = "BGH", 72 .std = V4L2_STD_B | V4L2_STD_GH, 73 .carr = 5500, 74 },{ 75 .name = "I", 76 .std = V4L2_STD_PAL_I, 77 .carr = 6000, 78 },{ 79 .name = "DKL", 80 .std = V4L2_STD_DK | V4L2_STD_SECAM_L | V4L2_STD_SECAM_LC, 81 .carr = 6500, 82 } 83 }; 84 85 static struct saa7134_tvaudio tvaudio[] = { 86 { 87 .name = "PAL-B/G FM-stereo", 88 .std = V4L2_STD_PAL_BG, 89 .mode = TVAUDIO_FM_BG_STEREO, 90 .carr1 = 5500, 91 .carr2 = 5742, 92 },{ 93 .name = "PAL-D/K1 FM-stereo", 94 .std = V4L2_STD_PAL_DK, 95 .carr1 = 6500, 96 .carr2 = 6258, 97 .mode = TVAUDIO_FM_BG_STEREO, 98 },{ 99 .name = "PAL-D/K2 FM-stereo", 100 .std = V4L2_STD_PAL_DK, 101 .carr1 = 6500, 102 .carr2 = 6742, 103 .mode = TVAUDIO_FM_BG_STEREO, 104 },{ 105 .name = "PAL-D/K3 FM-stereo", 106 .std = V4L2_STD_PAL_DK, 107 .carr1 = 6500, 108 .carr2 = 5742, 109 .mode = TVAUDIO_FM_BG_STEREO, 110 },{ 111 .name = "PAL-B/G NICAM", 112 .std = V4L2_STD_PAL_BG, 113 .carr1 = 5500, 114 .carr2 = 5850, 115 .mode = TVAUDIO_NICAM_FM, 116 },{ 117 .name = "PAL-I NICAM", 118 .std = V4L2_STD_PAL_I, 119 .carr1 = 6000, 120 .carr2 = 6552, 121 .mode = TVAUDIO_NICAM_FM, 122 },{ 123 .name = "PAL-D/K NICAM", 124 .std = V4L2_STD_PAL_DK, 125 .carr1 = 6500, 126 .carr2 = 5850, 127 .mode = TVAUDIO_NICAM_FM, 128 },{ 129 .name = "SECAM-L NICAM", 130 .std = V4L2_STD_SECAM_L, 131 .carr1 = 6500, 132 .carr2 = 5850, 133 .mode = TVAUDIO_NICAM_AM, 134 },{ 135 .name = "SECAM-D/K NICAM", 136 .std = V4L2_STD_SECAM_DK, 137 .carr1 = 6500, 138 .carr2 = 5850, 139 .mode = TVAUDIO_NICAM_FM, 140 },{ 141 .name = "NTSC-A2 FM-stereo", 142 .std = V4L2_STD_NTSC, 143 .carr1 = 4500, 144 .carr2 = 4724, 145 .mode = TVAUDIO_FM_K_STEREO, 146 },{ 147 .name = "NTSC-M", 148 .std = V4L2_STD_NTSC, 149 .carr1 = 4500, 150 .carr2 = -1, 151 .mode = TVAUDIO_FM_MONO, 152 } 153 }; 154 #define TVAUDIO ARRAY_SIZE(tvaudio) 155 156 /* ------------------------------------------------------------------ */ 157 158 static u32 tvaudio_carr2reg(u32 carrier) 159 { 160 u64 a = carrier; 161 162 a <<= 24; 163 do_div(a,12288); 164 return a; 165 } 166 167 static void tvaudio_setcarrier(struct saa7134_dev *dev, 168 int primary, int secondary) 169 { 170 if (-1 == secondary) 171 secondary = primary; 172 saa_writel(SAA7134_CARRIER1_FREQ0 >> 2, tvaudio_carr2reg(primary)); 173 saa_writel(SAA7134_CARRIER2_FREQ0 >> 2, tvaudio_carr2reg(secondary)); 174 } 175 176 #define SAA7134_MUTE_MASK 0xbb 177 #define SAA7134_MUTE_ANALOG 0x04 178 #define SAA7134_MUTE_I2S 0x40 179 180 static void mute_input_7134(struct saa7134_dev *dev) 181 { 182 unsigned int mute; 183 struct saa7134_input *in; 184 int ausel=0, ics=0, ocs=0; 185 int mask; 186 187 /* look what is to do ... */ 188 in = dev->input; 189 mute = (dev->ctl_mute || 190 (dev->automute && (&card(dev).radio) != in)); 191 if (card(dev).mute.type) { 192 /* 193 * 7130 - we'll mute using some unconnected audio input 194 * 7134 - we'll probably should switch external mux with gpio 195 */ 196 if (mute) 197 in = &card(dev).mute; 198 } 199 200 if (dev->hw_mute == mute && 201 dev->hw_input == in && !dev->insuspend) { 202 audio_dbg(1, "mute/input: nothing to do [mute=%d,input=%s]\n", 203 mute, saa7134_input_name[in->type]); 204 return; 205 } 206 207 audio_dbg(1, "ctl_mute=%d automute=%d input=%s => mute=%d input=%s\n", 208 dev->ctl_mute, dev->automute, 209 saa7134_input_name[dev->input->type], mute, 210 saa7134_input_name[in->type]); 211 dev->hw_mute = mute; 212 dev->hw_input = in; 213 214 if (PCI_DEVICE_ID_PHILIPS_SAA7134 == dev->pci->device) 215 /* 7134 mute */ 216 saa_writeb(SAA7134_AUDIO_MUTE_CTRL, mute ? 217 SAA7134_MUTE_MASK | 218 SAA7134_MUTE_ANALOG | 219 SAA7134_MUTE_I2S : 220 SAA7134_MUTE_MASK); 221 222 /* switch internal audio mux */ 223 switch (in->amux) { 224 case TV: ausel=0xc0; ics=0x00; ocs=0x02; break; 225 case LINE1: ausel=0x80; ics=0x00; ocs=0x00; break; 226 case LINE2: ausel=0x80; ics=0x08; ocs=0x01; break; 227 case LINE2_LEFT: ausel=0x80; ics=0x08; ocs=0x05; break; 228 } 229 saa_andorb(SAA7134_AUDIO_FORMAT_CTRL, 0xc0, ausel); 230 saa_andorb(SAA7134_ANALOG_IO_SELECT, 0x08, ics); 231 saa_andorb(SAA7134_ANALOG_IO_SELECT, 0x07, ocs); 232 // for oss, we need to change the clock configuration 233 if (in->amux == TV) 234 saa_andorb(SAA7134_SIF_SAMPLE_FREQ, 0x03, 0x00); 235 else 236 saa_andorb(SAA7134_SIF_SAMPLE_FREQ, 0x03, 0x01); 237 238 /* switch gpio-connected external audio mux */ 239 if (0 == card(dev).gpiomask) 240 return; 241 242 mask = card(dev).gpiomask; 243 saa_andorl(SAA7134_GPIO_GPMODE0 >> 2, mask, mask); 244 saa_andorl(SAA7134_GPIO_GPSTATUS0 >> 2, mask, in->gpio); 245 saa7134_track_gpio(dev, saa7134_input_name[in->type]); 246 } 247 248 static void tvaudio_setmode(struct saa7134_dev *dev, 249 struct saa7134_tvaudio *audio, 250 char *note) 251 { 252 int acpf, tweak = 0; 253 254 if (dev->tvnorm->id == V4L2_STD_NTSC) { 255 acpf = 0x19066; 256 } else { 257 acpf = 0x1e000; 258 } 259 if (audio_clock_tweak > -1024 && audio_clock_tweak < 1024) 260 tweak = audio_clock_tweak; 261 262 if (note) 263 audio_dbg(1, "tvaudio_setmode: %s %s [%d.%03d/%d.%03d MHz] acpf=%d%+d\n", 264 note, audio->name, 265 audio->carr1 / 1000, audio->carr1 % 1000, 266 audio->carr2 / 1000, audio->carr2 % 1000, 267 acpf, tweak); 268 269 acpf += tweak; 270 saa_writeb(SAA7134_AUDIO_CLOCKS_PER_FIELD0, (acpf & 0x0000ff) >> 0); 271 saa_writeb(SAA7134_AUDIO_CLOCKS_PER_FIELD1, (acpf & 0x00ff00) >> 8); 272 saa_writeb(SAA7134_AUDIO_CLOCKS_PER_FIELD2, (acpf & 0x030000) >> 16); 273 tvaudio_setcarrier(dev,audio->carr1,audio->carr2); 274 275 switch (audio->mode) { 276 case TVAUDIO_FM_MONO: 277 case TVAUDIO_FM_BG_STEREO: 278 saa_writeb(SAA7134_DEMODULATOR, 0x00); 279 saa_writeb(SAA7134_DCXO_IDENT_CTRL, 0x00); 280 saa_writeb(SAA7134_FM_DEEMPHASIS, 0x22); 281 saa_writeb(SAA7134_FM_DEMATRIX, 0x80); 282 saa_writeb(SAA7134_STEREO_DAC_OUTPUT_SELECT, 0xa0); 283 break; 284 case TVAUDIO_FM_K_STEREO: 285 saa_writeb(SAA7134_DEMODULATOR, 0x00); 286 saa_writeb(SAA7134_DCXO_IDENT_CTRL, 0x01); 287 saa_writeb(SAA7134_FM_DEEMPHASIS, 0x22); 288 saa_writeb(SAA7134_FM_DEMATRIX, 0x80); 289 saa_writeb(SAA7134_STEREO_DAC_OUTPUT_SELECT, 0xa0); 290 break; 291 case TVAUDIO_NICAM_FM: 292 saa_writeb(SAA7134_DEMODULATOR, 0x10); 293 saa_writeb(SAA7134_DCXO_IDENT_CTRL, 0x00); 294 saa_writeb(SAA7134_FM_DEEMPHASIS, 0x44); 295 saa_writeb(SAA7134_STEREO_DAC_OUTPUT_SELECT, 0xa1); 296 saa_writeb(SAA7134_NICAM_CONFIG, 0x00); 297 break; 298 case TVAUDIO_NICAM_AM: 299 saa_writeb(SAA7134_DEMODULATOR, 0x12); 300 saa_writeb(SAA7134_DCXO_IDENT_CTRL, 0x00); 301 saa_writeb(SAA7134_FM_DEEMPHASIS, 0x44); 302 saa_writeb(SAA7134_STEREO_DAC_OUTPUT_SELECT, 0xa1); 303 saa_writeb(SAA7134_NICAM_CONFIG, 0x00); 304 break; 305 case TVAUDIO_FM_SAT_STEREO: 306 /* not implemented (yet) */ 307 break; 308 } 309 } 310 311 static int tvaudio_sleep(struct saa7134_dev *dev, int timeout) 312 { 313 if (dev->thread.scan1 == dev->thread.scan2 && 314 !kthread_should_stop()) { 315 if (timeout < 0) { 316 set_current_state(TASK_INTERRUPTIBLE); 317 schedule(); 318 } else { 319 schedule_timeout_interruptible 320 (msecs_to_jiffies(timeout)); 321 } 322 } 323 return dev->thread.scan1 != dev->thread.scan2; 324 } 325 326 static int tvaudio_checkcarrier(struct saa7134_dev *dev, struct mainscan *scan) 327 { 328 __s32 left,right,value; 329 330 if (!(dev->tvnorm->id & scan->std)) { 331 value = 0; 332 audio_dbg(1, "skipping %d.%03d MHz [%4s]\n", 333 scan->carr / 1000, scan->carr % 1000, scan->name); 334 return 0; 335 } 336 337 if (audio_debug > 1) { 338 int i; 339 audio_dbg(1, "debug %d:", scan->carr); 340 for (i = -150; i <= 150; i += 30) { 341 tvaudio_setcarrier(dev,scan->carr+i,scan->carr+i); 342 saa_readl(SAA7134_LEVEL_READOUT1 >> 2); 343 if (tvaudio_sleep(dev,SCAN_SAMPLE_DELAY)) 344 return -1; 345 value = saa_readl(SAA7134_LEVEL_READOUT1 >> 2); 346 if (0 == i) 347 pr_cont(" # %6d # ", value >> 16); 348 else 349 pr_cont(" %6d", value >> 16); 350 } 351 pr_cont("\n"); 352 } 353 354 tvaudio_setcarrier(dev,scan->carr-90,scan->carr-90); 355 saa_readl(SAA7134_LEVEL_READOUT1 >> 2); 356 if (tvaudio_sleep(dev,SCAN_SAMPLE_DELAY)) 357 return -1; 358 left = saa_readl(SAA7134_LEVEL_READOUT1 >> 2); 359 360 tvaudio_setcarrier(dev,scan->carr+90,scan->carr+90); 361 saa_readl(SAA7134_LEVEL_READOUT1 >> 2); 362 if (tvaudio_sleep(dev,SCAN_SAMPLE_DELAY)) 363 return -1; 364 right = saa_readl(SAA7134_LEVEL_READOUT1 >> 2); 365 366 left >>= 16; 367 right >>= 16; 368 value = left > right ? left - right : right - left; 369 audio_dbg(1, "scanning %d.%03d MHz [%4s] => dc is %5d [%d/%d]\n", 370 scan->carr / 1000, scan->carr % 1000, 371 scan->name, value, left, right); 372 return value; 373 } 374 375 376 static int tvaudio_getstereo(struct saa7134_dev *dev, struct saa7134_tvaudio *audio) 377 { 378 __u32 idp, nicam, nicam_status; 379 int retval = -1; 380 381 switch (audio->mode) { 382 case TVAUDIO_FM_MONO: 383 return V4L2_TUNER_SUB_MONO; 384 case TVAUDIO_FM_K_STEREO: 385 case TVAUDIO_FM_BG_STEREO: 386 idp = (saa_readb(SAA7134_IDENT_SIF) & 0xe0) >> 5; 387 audio_dbg(1, "getstereo: fm/stereo: idp=0x%x\n", idp); 388 if (0x03 == (idp & 0x03)) 389 retval = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2; 390 else if (0x05 == (idp & 0x05)) 391 retval = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO; 392 else if (0x01 == (idp & 0x01)) 393 retval = V4L2_TUNER_SUB_MONO; 394 break; 395 case TVAUDIO_FM_SAT_STEREO: 396 /* not implemented (yet) */ 397 break; 398 case TVAUDIO_NICAM_FM: 399 case TVAUDIO_NICAM_AM: 400 nicam = saa_readb(SAA7134_AUDIO_STATUS); 401 audio_dbg(1, "getstereo: nicam=0x%x\n", nicam); 402 if (nicam & 0x1) { 403 nicam_status = saa_readb(SAA7134_NICAM_STATUS); 404 audio_dbg(1, "getstereo: nicam_status=0x%x\n", 405 nicam_status); 406 407 switch (nicam_status & 0x03) { 408 case 0x01: 409 retval = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2; 410 break; 411 case 0x02: 412 retval = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO; 413 break; 414 default: 415 retval = V4L2_TUNER_SUB_MONO; 416 } 417 } else { 418 /* No nicam detected */ 419 } 420 break; 421 } 422 if (retval != -1) 423 audio_dbg(1, "found audio subchannels:%s%s%s%s\n", 424 (retval & V4L2_TUNER_SUB_MONO) ? " mono" : "", 425 (retval & V4L2_TUNER_SUB_STEREO) ? " stereo" : "", 426 (retval & V4L2_TUNER_SUB_LANG1) ? " lang1" : "", 427 (retval & V4L2_TUNER_SUB_LANG2) ? " lang2" : ""); 428 return retval; 429 } 430 431 static int tvaudio_setstereo(struct saa7134_dev *dev, struct saa7134_tvaudio *audio, 432 u32 mode) 433 { 434 static char *name[] = { 435 [ V4L2_TUNER_MODE_MONO ] = "mono", 436 [ V4L2_TUNER_MODE_STEREO ] = "stereo", 437 [ V4L2_TUNER_MODE_LANG1 ] = "lang1", 438 [ V4L2_TUNER_MODE_LANG2 ] = "lang2", 439 [ V4L2_TUNER_MODE_LANG1_LANG2 ] = "lang1+lang2", 440 }; 441 static u32 fm[] = { 442 [ V4L2_TUNER_MODE_MONO ] = 0x00, /* ch1 */ 443 [ V4L2_TUNER_MODE_STEREO ] = 0x80, /* auto */ 444 [ V4L2_TUNER_MODE_LANG1 ] = 0x00, /* ch1 */ 445 [ V4L2_TUNER_MODE_LANG2 ] = 0x01, /* ch2 */ 446 [ V4L2_TUNER_MODE_LANG1_LANG2 ] = 0x80, /* auto */ 447 }; 448 u32 reg; 449 450 switch (audio->mode) { 451 case TVAUDIO_FM_MONO: 452 /* nothing to do ... */ 453 break; 454 case TVAUDIO_FM_K_STEREO: 455 case TVAUDIO_FM_BG_STEREO: 456 case TVAUDIO_NICAM_AM: 457 case TVAUDIO_NICAM_FM: 458 audio_dbg(1, "setstereo [fm] => %s\n", 459 name[mode % ARRAY_SIZE(name)]); 460 reg = fm[ mode % ARRAY_SIZE(fm) ]; 461 saa_writeb(SAA7134_FM_DEMATRIX, reg); 462 break; 463 case TVAUDIO_FM_SAT_STEREO: 464 /* Not implemented */ 465 break; 466 } 467 return 0; 468 } 469 470 static int tvaudio_thread(void *data) 471 { 472 struct saa7134_dev *dev = data; 473 int carr_vals[ARRAY_SIZE(mainscan)]; 474 unsigned int i, audio, nscan; 475 int max1,max2,carrier,rx,mode,lastmode,default_carrier; 476 477 set_freezable(); 478 479 for (;;) { 480 tvaudio_sleep(dev,-1); 481 if (kthread_should_stop()) 482 goto done; 483 484 restart: 485 try_to_freeze(); 486 487 dev->thread.scan1 = dev->thread.scan2; 488 audio_dbg(1, "tvaudio thread scan start [%d]\n", 489 dev->thread.scan1); 490 dev->tvaudio = NULL; 491 492 saa_writeb(SAA7134_MONITOR_SELECT, 0xa0); 493 saa_writeb(SAA7134_FM_DEMATRIX, 0x80); 494 495 if (dev->ctl_automute) 496 dev->automute = 1; 497 498 mute_input_7134(dev); 499 500 /* give the tuner some time */ 501 if (tvaudio_sleep(dev,SCAN_INITIAL_DELAY)) 502 goto restart; 503 504 max1 = 0; 505 max2 = 0; 506 nscan = 0; 507 carrier = 0; 508 default_carrier = 0; 509 for (i = 0; i < ARRAY_SIZE(mainscan); i++) { 510 if (!(dev->tvnorm->id & mainscan[i].std)) 511 continue; 512 if (!default_carrier) 513 default_carrier = mainscan[i].carr; 514 nscan++; 515 } 516 517 if (1 == nscan) { 518 /* only one candidate -- skip scan ;) */ 519 audio_dbg(1, "only one main carrier candidate - skipping scan\n"); 520 max1 = 12345; 521 carrier = default_carrier; 522 } else { 523 /* scan for the main carrier */ 524 saa_writeb(SAA7134_MONITOR_SELECT,0x00); 525 tvaudio_setmode(dev,&tvaudio[0],NULL); 526 for (i = 0; i < ARRAY_SIZE(mainscan); i++) { 527 carr_vals[i] = tvaudio_checkcarrier(dev, mainscan+i); 528 if (dev->thread.scan1 != dev->thread.scan2) 529 goto restart; 530 } 531 for (max1 = 0, max2 = 0, i = 0; i < ARRAY_SIZE(mainscan); i++) { 532 if (max1 < carr_vals[i]) { 533 max2 = max1; 534 max1 = carr_vals[i]; 535 carrier = mainscan[i].carr; 536 } else if (max2 < carr_vals[i]) { 537 max2 = carr_vals[i]; 538 } 539 } 540 } 541 542 if (0 != carrier && max1 > 2000 && max1 > max2*3) { 543 /* found good carrier */ 544 audio_dbg(1, "found %s main sound carrier @ %d.%03d MHz [%d/%d]\n", 545 dev->tvnorm->name, carrier/1000, carrier%1000, 546 max1, max2); 547 dev->last_carrier = carrier; 548 dev->automute = 0; 549 550 } else if (0 != dev->last_carrier) { 551 /* no carrier -- try last detected one as fallback */ 552 carrier = dev->last_carrier; 553 audio_dbg(1, "audio carrier scan failed, using %d.%03d MHz [last detected]\n", 554 carrier/1000, carrier%1000); 555 dev->automute = 1; 556 557 } else { 558 /* no carrier + no fallback -- use default */ 559 carrier = default_carrier; 560 audio_dbg(1, "audio carrier scan failed, using %d.%03d MHz [default]\n", 561 carrier/1000, carrier%1000); 562 dev->automute = 1; 563 } 564 tvaudio_setcarrier(dev,carrier,carrier); 565 saa_andorb(SAA7134_STEREO_DAC_OUTPUT_SELECT, 0x30, 0x00); 566 saa7134_tvaudio_setmute(dev); 567 /* find the exact tv audio norm */ 568 for (audio = UNSET, i = 0; i < TVAUDIO; i++) { 569 if (dev->tvnorm->id != UNSET && 570 !(dev->tvnorm->id & tvaudio[i].std)) 571 continue; 572 if (tvaudio[i].carr1 != carrier) 573 continue; 574 /* Note: at least the primary carrier is right here */ 575 if (UNSET == audio) 576 audio = i; 577 tvaudio_setmode(dev,&tvaudio[i],"trying"); 578 if (tvaudio_sleep(dev,SCAN_SUBCARRIER_DELAY)) 579 goto restart; 580 if (-1 != tvaudio_getstereo(dev,&tvaudio[i])) { 581 audio = i; 582 break; 583 } 584 } 585 saa_andorb(SAA7134_STEREO_DAC_OUTPUT_SELECT, 0x30, 0x30); 586 if (UNSET == audio) 587 continue; 588 tvaudio_setmode(dev,&tvaudio[audio],"using"); 589 590 tvaudio_setstereo(dev,&tvaudio[audio],V4L2_TUNER_MODE_MONO); 591 dev->tvaudio = &tvaudio[audio]; 592 593 lastmode = 42; 594 for (;;) { 595 596 try_to_freeze(); 597 598 if (tvaudio_sleep(dev,5000)) 599 goto restart; 600 if (kthread_should_stop()) 601 break; 602 if (UNSET == dev->thread.mode) { 603 rx = tvaudio_getstereo(dev, &tvaudio[audio]); 604 mode = saa7134_tvaudio_rx2mode(rx); 605 } else { 606 mode = dev->thread.mode; 607 } 608 if (lastmode != mode) { 609 tvaudio_setstereo(dev,&tvaudio[audio],mode); 610 lastmode = mode; 611 } 612 } 613 } 614 615 done: 616 dev->thread.stopped = 1; 617 return 0; 618 } 619 620 /* ------------------------------------------------------------------ */ 621 /* saa7133 / saa7135 code */ 622 623 static char *stdres[0x20] = { 624 [0x00] = "no standard detected", 625 [0x01] = "B/G (in progress)", 626 [0x02] = "D/K (in progress)", 627 [0x03] = "M (in progress)", 628 629 [0x04] = "B/G A2", 630 [0x05] = "B/G NICAM", 631 [0x06] = "D/K A2 (1)", 632 [0x07] = "D/K A2 (2)", 633 [0x08] = "D/K A2 (3)", 634 [0x09] = "D/K NICAM", 635 [0x0a] = "L NICAM", 636 [0x0b] = "I NICAM", 637 638 [0x0c] = "M Korea", 639 [0x0d] = "M BTSC ", 640 [0x0e] = "M EIAJ", 641 642 [0x0f] = "FM radio / IF 10.7 / 50 deemp", 643 [0x10] = "FM radio / IF 10.7 / 75 deemp", 644 [0x11] = "FM radio / IF sel / 50 deemp", 645 [0x12] = "FM radio / IF sel / 75 deemp", 646 647 [0x13 ... 0x1e ] = "unknown", 648 [0x1f] = "??? [in progress]", 649 }; 650 651 #define DSP_RETRY 32 652 #define DSP_DELAY 16 653 #define SAA7135_DSP_RWCLEAR_RERR 1 654 655 static inline int saa_dsp_reset_error_bit(struct saa7134_dev *dev) 656 { 657 int state = saa_readb(SAA7135_DSP_RWSTATE); 658 if (unlikely(state & SAA7135_DSP_RWSTATE_ERR)) { 659 audio_dbg(2, "%s: resetting error bit\n", dev->name); 660 saa_writeb(SAA7135_DSP_RWCLEAR, SAA7135_DSP_RWCLEAR_RERR); 661 } 662 return 0; 663 } 664 665 static inline int saa_dsp_wait_bit(struct saa7134_dev *dev, int bit) 666 { 667 int state, count = DSP_RETRY; 668 669 state = saa_readb(SAA7135_DSP_RWSTATE); 670 if (unlikely(state & SAA7135_DSP_RWSTATE_ERR)) { 671 pr_warn("%s: dsp access error\n", dev->name); 672 saa_dsp_reset_error_bit(dev); 673 return -EIO; 674 } 675 while (0 == (state & bit)) { 676 if (unlikely(0 == count)) { 677 pr_err("dsp access wait timeout [bit=%s]\n", 678 (bit & SAA7135_DSP_RWSTATE_WRR) ? "WRR" : 679 (bit & SAA7135_DSP_RWSTATE_RDB) ? "RDB" : 680 (bit & SAA7135_DSP_RWSTATE_IDA) ? "IDA" : 681 "???"); 682 return -EIO; 683 } 684 saa_wait(DSP_DELAY); 685 state = saa_readb(SAA7135_DSP_RWSTATE); 686 count--; 687 } 688 return 0; 689 } 690 691 692 int saa_dsp_writel(struct saa7134_dev *dev, int reg, u32 value) 693 { 694 int err; 695 696 audio_dbg(2, "dsp write reg 0x%x = 0x%06x\n", reg << 2, value); 697 err = saa_dsp_wait_bit(dev,SAA7135_DSP_RWSTATE_WRR); 698 if (err < 0) 699 return err; 700 saa_writel(reg,value); 701 err = saa_dsp_wait_bit(dev,SAA7135_DSP_RWSTATE_WRR); 702 if (err < 0) 703 return err; 704 return 0; 705 } 706 707 static int getstereo_7133(struct saa7134_dev *dev) 708 { 709 int retval = V4L2_TUNER_SUB_MONO; 710 u32 value; 711 712 value = saa_readl(0x528 >> 2); 713 if (value & 0x20) 714 retval = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO; 715 if (value & 0x40) 716 retval = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2; 717 return retval; 718 } 719 720 static int mute_input_7133(struct saa7134_dev *dev) 721 { 722 u32 reg = 0; 723 u32 xbarin, xbarout; 724 int mask; 725 struct saa7134_input *in; 726 727 xbarin = 0x03; 728 switch (dev->input->amux) { 729 case TV: 730 reg = 0x02; 731 xbarin = 0; 732 break; 733 case LINE1: 734 reg = 0x00; 735 break; 736 case LINE2: 737 case LINE2_LEFT: 738 reg = 0x09; 739 break; 740 } 741 saa_dsp_writel(dev, 0x464 >> 2, xbarin); 742 if (dev->ctl_mute) { 743 reg = 0x07; 744 xbarout = 0xbbbbbb; 745 } else 746 xbarout = 0xbbbb10; 747 saa_dsp_writel(dev, 0x46c >> 2, xbarout); 748 749 saa_writel(0x594 >> 2, reg); 750 751 752 /* switch gpio-connected external audio mux */ 753 if (0 != card(dev).gpiomask) { 754 mask = card(dev).gpiomask; 755 756 if (card(dev).mute.type && dev->ctl_mute) 757 in = &card(dev).mute; 758 else 759 in = dev->input; 760 761 saa_andorl(SAA7134_GPIO_GPMODE0 >> 2, mask, mask); 762 saa_andorl(SAA7134_GPIO_GPSTATUS0 >> 2, mask, in->gpio); 763 saa7134_track_gpio(dev, saa7134_input_name[in->type]); 764 } 765 766 return 0; 767 } 768 769 static int tvaudio_thread_ddep(void *data) 770 { 771 struct saa7134_dev *dev = data; 772 u32 value, norms; 773 774 set_freezable(); 775 for (;;) { 776 tvaudio_sleep(dev,-1); 777 if (kthread_should_stop()) 778 goto done; 779 restart: 780 try_to_freeze(); 781 782 dev->thread.scan1 = dev->thread.scan2; 783 audio_dbg(1, "tvaudio thread scan start [%d]\n", 784 dev->thread.scan1); 785 786 if (audio_ddep >= 0x04 && audio_ddep <= 0x0e) { 787 /* insmod option override */ 788 norms = (audio_ddep << 2) | 0x01; 789 audio_dbg(1, "ddep override: %s\n", 790 stdres[audio_ddep]); 791 } else if (&card(dev).radio == dev->input) { 792 audio_dbg(1, "FM Radio\n"); 793 if (dev->tuner_type == TUNER_PHILIPS_TDA8290) { 794 norms = (0x11 << 2) | 0x01; 795 /* set IF frequency to 5.5 MHz */ 796 saa_dsp_writel(dev, 0x42c >> 2, 0x729555); 797 } else { 798 norms = (0x0f << 2) | 0x01; 799 } 800 } else { 801 /* (let chip) scan for sound carrier */ 802 norms = 0; 803 if (dev->tvnorm->id & (V4L2_STD_B | V4L2_STD_GH)) 804 norms |= 0x04; 805 if (dev->tvnorm->id & V4L2_STD_PAL_I) 806 norms |= 0x20; 807 if (dev->tvnorm->id & V4L2_STD_DK) 808 norms |= 0x08; 809 if (dev->tvnorm->id & V4L2_STD_MN) 810 norms |= 0x40; 811 if (dev->tvnorm->id & (V4L2_STD_SECAM_L | V4L2_STD_SECAM_LC)) 812 norms |= 0x10; 813 if (0 == norms) 814 norms = 0x7c; /* all */ 815 audio_dbg(1, "scanning:%s%s%s%s%s\n", 816 (norms & 0x04) ? " B/G" : "", 817 (norms & 0x08) ? " D/K" : "", 818 (norms & 0x10) ? " L/L'" : "", 819 (norms & 0x20) ? " I" : "", 820 (norms & 0x40) ? " M" : ""); 821 } 822 823 /* kick automatic standard detection */ 824 saa_dsp_writel(dev, 0x454 >> 2, 0); 825 saa_dsp_writel(dev, 0x454 >> 2, norms | 0x80); 826 827 /* setup crossbars */ 828 saa_dsp_writel(dev, 0x464 >> 2, 0x000000); 829 saa_dsp_writel(dev, 0x470 >> 2, 0x101010); 830 831 if (tvaudio_sleep(dev,3000)) 832 goto restart; 833 value = saa_readl(0x528 >> 2) & 0xffffff; 834 835 audio_dbg(1, "tvaudio thread status: 0x%x [%s%s%s]\n", 836 value, stdres[value & 0x1f], 837 (value & 0x000020) ? ",stereo" : "", 838 (value & 0x000040) ? ",dual" : ""); 839 audio_dbg(1, "detailed status: %s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s\n", 840 (value & 0x000080) ? " A2/EIAJ pilot tone " : "", 841 (value & 0x000100) ? " A2/EIAJ dual " : "", 842 (value & 0x000200) ? " A2/EIAJ stereo " : "", 843 (value & 0x000400) ? " A2/EIAJ noise mute " : "", 844 845 (value & 0x000800) ? " BTSC/FM radio pilot " : "", 846 (value & 0x001000) ? " SAP carrier " : "", 847 (value & 0x002000) ? " BTSC stereo noise mute " : "", 848 (value & 0x004000) ? " SAP noise mute " : "", 849 (value & 0x008000) ? " VDSP " : "", 850 851 (value & 0x010000) ? " NICST " : "", 852 (value & 0x020000) ? " NICDU " : "", 853 (value & 0x040000) ? " NICAM muted " : "", 854 (value & 0x080000) ? " NICAM reserve sound " : "", 855 856 (value & 0x100000) ? " init done " : ""); 857 } 858 859 done: 860 dev->thread.stopped = 1; 861 return 0; 862 } 863 864 /* ------------------------------------------------------------------ */ 865 /* common stuff + external entry points */ 866 867 void saa7134_enable_i2s(struct saa7134_dev *dev) 868 { 869 int i2s_format; 870 871 if (!card_is_empress(dev)) 872 return; 873 874 if (dev->pci->device == PCI_DEVICE_ID_PHILIPS_SAA7130) 875 return; 876 877 /* configure GPIO for out */ 878 saa_andorl(SAA7134_GPIO_GPMODE0 >> 2, 0x0E000000, 0x00000000); 879 880 switch (dev->pci->device) { 881 case PCI_DEVICE_ID_PHILIPS_SAA7133: 882 case PCI_DEVICE_ID_PHILIPS_SAA7135: 883 /* Set I2S format (SONY) */ 884 saa_writeb(SAA7133_I2S_AUDIO_CONTROL, 0x00); 885 /* Start I2S */ 886 saa_writeb(SAA7134_I2S_AUDIO_OUTPUT, 0x11); 887 break; 888 889 case PCI_DEVICE_ID_PHILIPS_SAA7134: 890 i2s_format = (dev->input->amux == TV) ? 0x00 : 0x01; 891 892 /* enable I2S audio output for the mpeg encoder */ 893 saa_writeb(SAA7134_I2S_OUTPUT_SELECT, 0x80); 894 saa_writeb(SAA7134_I2S_OUTPUT_FORMAT, i2s_format); 895 saa_writeb(SAA7134_I2S_OUTPUT_LEVEL, 0x0F); 896 saa_writeb(SAA7134_I2S_AUDIO_OUTPUT, 0x01); 897 898 default: 899 break; 900 } 901 } 902 903 int saa7134_tvaudio_rx2mode(u32 rx) 904 { 905 u32 mode; 906 907 mode = V4L2_TUNER_MODE_MONO; 908 if (rx & V4L2_TUNER_SUB_STEREO) 909 mode = V4L2_TUNER_MODE_STEREO; 910 else if (rx & V4L2_TUNER_SUB_LANG1) 911 mode = V4L2_TUNER_MODE_LANG1; 912 else if (rx & V4L2_TUNER_SUB_LANG2) 913 mode = V4L2_TUNER_MODE_LANG2; 914 return mode; 915 } 916 917 void saa7134_tvaudio_setmute(struct saa7134_dev *dev) 918 { 919 switch (dev->pci->device) { 920 case PCI_DEVICE_ID_PHILIPS_SAA7130: 921 case PCI_DEVICE_ID_PHILIPS_SAA7134: 922 mute_input_7134(dev); 923 break; 924 case PCI_DEVICE_ID_PHILIPS_SAA7133: 925 case PCI_DEVICE_ID_PHILIPS_SAA7135: 926 mute_input_7133(dev); 927 break; 928 } 929 } 930 931 void saa7134_tvaudio_setinput(struct saa7134_dev *dev, 932 struct saa7134_input *in) 933 { 934 dev->input = in; 935 switch (dev->pci->device) { 936 case PCI_DEVICE_ID_PHILIPS_SAA7130: 937 case PCI_DEVICE_ID_PHILIPS_SAA7134: 938 mute_input_7134(dev); 939 break; 940 case PCI_DEVICE_ID_PHILIPS_SAA7133: 941 case PCI_DEVICE_ID_PHILIPS_SAA7135: 942 mute_input_7133(dev); 943 break; 944 } 945 saa7134_enable_i2s(dev); 946 } 947 948 void saa7134_tvaudio_setvolume(struct saa7134_dev *dev, int level) 949 { 950 switch (dev->pci->device) { 951 case PCI_DEVICE_ID_PHILIPS_SAA7134: 952 saa_writeb(SAA7134_CHANNEL1_LEVEL, level & 0x1f); 953 saa_writeb(SAA7134_CHANNEL2_LEVEL, level & 0x1f); 954 saa_writeb(SAA7134_NICAM_LEVEL_ADJUST, level & 0x1f); 955 break; 956 } 957 } 958 959 int saa7134_tvaudio_getstereo(struct saa7134_dev *dev) 960 { 961 int retval = V4L2_TUNER_SUB_MONO; 962 963 switch (dev->pci->device) { 964 case PCI_DEVICE_ID_PHILIPS_SAA7134: 965 if (dev->tvaudio) 966 retval = tvaudio_getstereo(dev,dev->tvaudio); 967 break; 968 case PCI_DEVICE_ID_PHILIPS_SAA7133: 969 case PCI_DEVICE_ID_PHILIPS_SAA7135: 970 retval = getstereo_7133(dev); 971 break; 972 } 973 return retval; 974 } 975 976 void saa7134_tvaudio_init(struct saa7134_dev *dev) 977 { 978 int clock = saa7134_boards[dev->board].audio_clock; 979 980 if (UNSET != audio_clock_override) 981 clock = audio_clock_override; 982 983 switch (dev->pci->device) { 984 case PCI_DEVICE_ID_PHILIPS_SAA7134: 985 /* init all audio registers */ 986 saa_writeb(SAA7134_AUDIO_PLL_CTRL, 0x00); 987 if (need_resched()) 988 schedule(); 989 else 990 udelay(10); 991 992 saa_writeb(SAA7134_AUDIO_CLOCK0, clock & 0xff); 993 saa_writeb(SAA7134_AUDIO_CLOCK1, (clock >> 8) & 0xff); 994 saa_writeb(SAA7134_AUDIO_CLOCK2, (clock >> 16) & 0xff); 995 /* frame locked audio is mandatory for NICAM */ 996 saa_writeb(SAA7134_AUDIO_PLL_CTRL, 0x01); 997 saa_writeb(SAA7134_NICAM_ERROR_LOW, 0x14); 998 saa_writeb(SAA7134_NICAM_ERROR_HIGH, 0x50); 999 break; 1000 case PCI_DEVICE_ID_PHILIPS_SAA7133: 1001 case PCI_DEVICE_ID_PHILIPS_SAA7135: 1002 saa_writel(0x598 >> 2, clock); 1003 saa_dsp_writel(dev, 0x474 >> 2, 0x00); 1004 saa_dsp_writel(dev, 0x450 >> 2, 0x00); 1005 } 1006 } 1007 1008 int saa7134_tvaudio_init2(struct saa7134_dev *dev) 1009 { 1010 int (*my_thread)(void *data) = NULL; 1011 1012 switch (dev->pci->device) { 1013 case PCI_DEVICE_ID_PHILIPS_SAA7134: 1014 my_thread = tvaudio_thread; 1015 break; 1016 case PCI_DEVICE_ID_PHILIPS_SAA7133: 1017 case PCI_DEVICE_ID_PHILIPS_SAA7135: 1018 my_thread = tvaudio_thread_ddep; 1019 break; 1020 } 1021 1022 dev->thread.thread = NULL; 1023 dev->thread.scan1 = dev->thread.scan2 = 0; 1024 if (my_thread) { 1025 saa7134_tvaudio_init(dev); 1026 /* start tvaudio thread */ 1027 dev->thread.thread = kthread_run(my_thread, dev, "%s", dev->name); 1028 if (IS_ERR(dev->thread.thread)) { 1029 pr_warn("%s: kernel_thread() failed\n", 1030 dev->name); 1031 /* XXX: missing error handling here */ 1032 } 1033 } 1034 1035 saa7134_enable_i2s(dev); 1036 return 0; 1037 } 1038 1039 int saa7134_tvaudio_close(struct saa7134_dev *dev) 1040 { 1041 dev->automute = 1; 1042 /* anything else to undo? */ 1043 return 0; 1044 } 1045 1046 int saa7134_tvaudio_fini(struct saa7134_dev *dev) 1047 { 1048 /* shutdown tvaudio thread */ 1049 if (dev->thread.thread && !dev->thread.stopped) 1050 kthread_stop(dev->thread.thread); 1051 1052 saa_andorb(SAA7134_ANALOG_IO_SELECT, 0x07, 0x00); /* LINE1 */ 1053 return 0; 1054 } 1055 1056 int saa7134_tvaudio_do_scan(struct saa7134_dev *dev) 1057 { 1058 if (dev->input->amux != TV) { 1059 audio_dbg(1, "sound IF not in use, skipping scan\n"); 1060 dev->automute = 0; 1061 saa7134_tvaudio_setmute(dev); 1062 } else if (dev->thread.thread) { 1063 dev->thread.mode = UNSET; 1064 dev->thread.scan2++; 1065 1066 if (!dev->insuspend && !dev->thread.stopped) 1067 wake_up_process(dev->thread.thread); 1068 } else { 1069 dev->automute = 0; 1070 saa7134_tvaudio_setmute(dev); 1071 } 1072 return 0; 1073 } 1074 1075 EXPORT_SYMBOL(saa_dsp_writel); 1076 EXPORT_SYMBOL(saa7134_tvaudio_setmute); 1077