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 * You should have received a copy of the GNU General Public License 19 * along with this program; if not, write to the Free Software 20 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 21 */ 22 23 #include "saa7134.h" 24 #include "saa7134-reg.h" 25 26 #include <linux/init.h> 27 #include <linux/list.h> 28 #include <linux/module.h> 29 #include <linux/kernel.h> 30 #include <linux/kthread.h> 31 #include <linux/delay.h> 32 #include <linux/freezer.h> 33 #include <asm/div64.h> 34 35 /* ------------------------------------------------------------------ */ 36 37 static unsigned int audio_debug; 38 module_param(audio_debug, int, 0644); 39 MODULE_PARM_DESC(audio_debug,"enable debug messages [tv audio]"); 40 41 static unsigned int audio_ddep; 42 module_param(audio_ddep, int, 0644); 43 MODULE_PARM_DESC(audio_ddep,"audio ddep overwrite"); 44 45 static int audio_clock_override = UNSET; 46 module_param(audio_clock_override, int, 0644); 47 48 static int audio_clock_tweak; 49 module_param(audio_clock_tweak, int, 0644); 50 MODULE_PARM_DESC(audio_clock_tweak, "Audio clock tick fine tuning for cards with audio crystal that's slightly off (range [-1024 .. 1024])"); 51 52 #define audio_dbg(level, fmt, arg...) do { \ 53 if (audio_debug >= level) \ 54 printk(KERN_DEBUG pr_fmt("audio: " fmt), ## arg); \ 55 } while (0) 56 57 /* msecs */ 58 #define SCAN_INITIAL_DELAY 1000 59 #define SCAN_SAMPLE_DELAY 200 60 #define SCAN_SUBCARRIER_DELAY 2000 61 62 /* ------------------------------------------------------------------ */ 63 /* saa7134 code */ 64 65 static struct mainscan { 66 char *name; 67 v4l2_std_id std; 68 int carr; 69 } mainscan[] = { 70 { 71 .name = "MN", 72 .std = V4L2_STD_MN, 73 .carr = 4500, 74 },{ 75 .name = "BGH", 76 .std = V4L2_STD_B | V4L2_STD_GH, 77 .carr = 5500, 78 },{ 79 .name = "I", 80 .std = V4L2_STD_PAL_I, 81 .carr = 6000, 82 },{ 83 .name = "DKL", 84 .std = V4L2_STD_DK | V4L2_STD_SECAM_L | V4L2_STD_SECAM_LC, 85 .carr = 6500, 86 } 87 }; 88 89 static struct saa7134_tvaudio tvaudio[] = { 90 { 91 .name = "PAL-B/G FM-stereo", 92 .std = V4L2_STD_PAL_BG, 93 .mode = TVAUDIO_FM_BG_STEREO, 94 .carr1 = 5500, 95 .carr2 = 5742, 96 },{ 97 .name = "PAL-D/K1 FM-stereo", 98 .std = V4L2_STD_PAL_DK, 99 .carr1 = 6500, 100 .carr2 = 6258, 101 .mode = TVAUDIO_FM_BG_STEREO, 102 },{ 103 .name = "PAL-D/K2 FM-stereo", 104 .std = V4L2_STD_PAL_DK, 105 .carr1 = 6500, 106 .carr2 = 6742, 107 .mode = TVAUDIO_FM_BG_STEREO, 108 },{ 109 .name = "PAL-D/K3 FM-stereo", 110 .std = V4L2_STD_PAL_DK, 111 .carr1 = 6500, 112 .carr2 = 5742, 113 .mode = TVAUDIO_FM_BG_STEREO, 114 },{ 115 .name = "PAL-B/G NICAM", 116 .std = V4L2_STD_PAL_BG, 117 .carr1 = 5500, 118 .carr2 = 5850, 119 .mode = TVAUDIO_NICAM_FM, 120 },{ 121 .name = "PAL-I NICAM", 122 .std = V4L2_STD_PAL_I, 123 .carr1 = 6000, 124 .carr2 = 6552, 125 .mode = TVAUDIO_NICAM_FM, 126 },{ 127 .name = "PAL-D/K NICAM", 128 .std = V4L2_STD_PAL_DK, 129 .carr1 = 6500, 130 .carr2 = 5850, 131 .mode = TVAUDIO_NICAM_FM, 132 },{ 133 .name = "SECAM-L NICAM", 134 .std = V4L2_STD_SECAM_L, 135 .carr1 = 6500, 136 .carr2 = 5850, 137 .mode = TVAUDIO_NICAM_AM, 138 },{ 139 .name = "SECAM-D/K NICAM", 140 .std = V4L2_STD_SECAM_DK, 141 .carr1 = 6500, 142 .carr2 = 5850, 143 .mode = TVAUDIO_NICAM_FM, 144 },{ 145 .name = "NTSC-A2 FM-stereo", 146 .std = V4L2_STD_NTSC, 147 .carr1 = 4500, 148 .carr2 = 4724, 149 .mode = TVAUDIO_FM_K_STEREO, 150 },{ 151 .name = "NTSC-M", 152 .std = V4L2_STD_NTSC, 153 .carr1 = 4500, 154 .carr2 = -1, 155 .mode = TVAUDIO_FM_MONO, 156 } 157 }; 158 #define TVAUDIO ARRAY_SIZE(tvaudio) 159 160 /* ------------------------------------------------------------------ */ 161 162 static u32 tvaudio_carr2reg(u32 carrier) 163 { 164 u64 a = carrier; 165 166 a <<= 24; 167 do_div(a,12288); 168 return a; 169 } 170 171 static void tvaudio_setcarrier(struct saa7134_dev *dev, 172 int primary, int secondary) 173 { 174 if (-1 == secondary) 175 secondary = primary; 176 saa_writel(SAA7134_CARRIER1_FREQ0 >> 2, tvaudio_carr2reg(primary)); 177 saa_writel(SAA7134_CARRIER2_FREQ0 >> 2, tvaudio_carr2reg(secondary)); 178 } 179 180 #define SAA7134_MUTE_MASK 0xbb 181 #define SAA7134_MUTE_ANALOG 0x04 182 #define SAA7134_MUTE_I2S 0x40 183 184 static void mute_input_7134(struct saa7134_dev *dev) 185 { 186 unsigned int mute; 187 struct saa7134_input *in; 188 int ausel=0, ics=0, ocs=0; 189 int mask; 190 191 /* look what is to do ... */ 192 in = dev->input; 193 mute = (dev->ctl_mute || 194 (dev->automute && (&card(dev).radio) != in)); 195 if (card(dev).mute.type) { 196 /* 197 * 7130 - we'll mute using some unconnected audio input 198 * 7134 - we'll probably should switch external mux with gpio 199 */ 200 if (mute) 201 in = &card(dev).mute; 202 } 203 204 if (dev->hw_mute == mute && 205 dev->hw_input == in && !dev->insuspend) { 206 audio_dbg(1, "mute/input: nothing to do [mute=%d,input=%s]\n", 207 mute, saa7134_input_name[in->type]); 208 return; 209 } 210 211 audio_dbg(1, "ctl_mute=%d automute=%d input=%s => mute=%d input=%s\n", 212 dev->ctl_mute, dev->automute, 213 saa7134_input_name[dev->input->type], mute, 214 saa7134_input_name[in->type]); 215 dev->hw_mute = mute; 216 dev->hw_input = in; 217 218 if (PCI_DEVICE_ID_PHILIPS_SAA7134 == dev->pci->device) 219 /* 7134 mute */ 220 saa_writeb(SAA7134_AUDIO_MUTE_CTRL, mute ? 221 SAA7134_MUTE_MASK | 222 SAA7134_MUTE_ANALOG | 223 SAA7134_MUTE_I2S : 224 SAA7134_MUTE_MASK); 225 226 /* switch internal audio mux */ 227 switch (in->amux) { 228 case TV: ausel=0xc0; ics=0x00; ocs=0x02; break; 229 case LINE1: ausel=0x80; ics=0x00; ocs=0x00; break; 230 case LINE2: ausel=0x80; ics=0x08; ocs=0x01; break; 231 case LINE2_LEFT: ausel=0x80; ics=0x08; ocs=0x05; break; 232 } 233 saa_andorb(SAA7134_AUDIO_FORMAT_CTRL, 0xc0, ausel); 234 saa_andorb(SAA7134_ANALOG_IO_SELECT, 0x08, ics); 235 saa_andorb(SAA7134_ANALOG_IO_SELECT, 0x07, ocs); 236 // for oss, we need to change the clock configuration 237 if (in->amux == TV) 238 saa_andorb(SAA7134_SIF_SAMPLE_FREQ, 0x03, 0x00); 239 else 240 saa_andorb(SAA7134_SIF_SAMPLE_FREQ, 0x03, 0x01); 241 242 /* switch gpio-connected external audio mux */ 243 if (0 == card(dev).gpiomask) 244 return; 245 246 mask = card(dev).gpiomask; 247 saa_andorl(SAA7134_GPIO_GPMODE0 >> 2, mask, mask); 248 saa_andorl(SAA7134_GPIO_GPSTATUS0 >> 2, mask, in->gpio); 249 saa7134_track_gpio(dev, saa7134_input_name[in->type]); 250 } 251 252 static void tvaudio_setmode(struct saa7134_dev *dev, 253 struct saa7134_tvaudio *audio, 254 char *note) 255 { 256 int acpf, tweak = 0; 257 258 if (dev->tvnorm->id == V4L2_STD_NTSC) { 259 acpf = 0x19066; 260 } else { 261 acpf = 0x1e000; 262 } 263 if (audio_clock_tweak > -1024 && audio_clock_tweak < 1024) 264 tweak = audio_clock_tweak; 265 266 if (note) 267 audio_dbg(1, "tvaudio_setmode: %s %s [%d.%03d/%d.%03d MHz] acpf=%d%+d\n", 268 note, audio->name, 269 audio->carr1 / 1000, audio->carr1 % 1000, 270 audio->carr2 / 1000, audio->carr2 % 1000, 271 acpf, tweak); 272 273 acpf += tweak; 274 saa_writeb(SAA7134_AUDIO_CLOCKS_PER_FIELD0, (acpf & 0x0000ff) >> 0); 275 saa_writeb(SAA7134_AUDIO_CLOCKS_PER_FIELD1, (acpf & 0x00ff00) >> 8); 276 saa_writeb(SAA7134_AUDIO_CLOCKS_PER_FIELD2, (acpf & 0x030000) >> 16); 277 tvaudio_setcarrier(dev,audio->carr1,audio->carr2); 278 279 switch (audio->mode) { 280 case TVAUDIO_FM_MONO: 281 case TVAUDIO_FM_BG_STEREO: 282 saa_writeb(SAA7134_DEMODULATOR, 0x00); 283 saa_writeb(SAA7134_DCXO_IDENT_CTRL, 0x00); 284 saa_writeb(SAA7134_FM_DEEMPHASIS, 0x22); 285 saa_writeb(SAA7134_FM_DEMATRIX, 0x80); 286 saa_writeb(SAA7134_STEREO_DAC_OUTPUT_SELECT, 0xa0); 287 break; 288 case TVAUDIO_FM_K_STEREO: 289 saa_writeb(SAA7134_DEMODULATOR, 0x00); 290 saa_writeb(SAA7134_DCXO_IDENT_CTRL, 0x01); 291 saa_writeb(SAA7134_FM_DEEMPHASIS, 0x22); 292 saa_writeb(SAA7134_FM_DEMATRIX, 0x80); 293 saa_writeb(SAA7134_STEREO_DAC_OUTPUT_SELECT, 0xa0); 294 break; 295 case TVAUDIO_NICAM_FM: 296 saa_writeb(SAA7134_DEMODULATOR, 0x10); 297 saa_writeb(SAA7134_DCXO_IDENT_CTRL, 0x00); 298 saa_writeb(SAA7134_FM_DEEMPHASIS, 0x44); 299 saa_writeb(SAA7134_STEREO_DAC_OUTPUT_SELECT, 0xa1); 300 saa_writeb(SAA7134_NICAM_CONFIG, 0x00); 301 break; 302 case TVAUDIO_NICAM_AM: 303 saa_writeb(SAA7134_DEMODULATOR, 0x12); 304 saa_writeb(SAA7134_DCXO_IDENT_CTRL, 0x00); 305 saa_writeb(SAA7134_FM_DEEMPHASIS, 0x44); 306 saa_writeb(SAA7134_STEREO_DAC_OUTPUT_SELECT, 0xa1); 307 saa_writeb(SAA7134_NICAM_CONFIG, 0x00); 308 break; 309 case TVAUDIO_FM_SAT_STEREO: 310 /* not implemented (yet) */ 311 break; 312 } 313 } 314 315 static int tvaudio_sleep(struct saa7134_dev *dev, int timeout) 316 { 317 if (dev->thread.scan1 == dev->thread.scan2 && 318 !kthread_should_stop()) { 319 if (timeout < 0) { 320 set_current_state(TASK_INTERRUPTIBLE); 321 schedule(); 322 } else { 323 schedule_timeout_interruptible 324 (msecs_to_jiffies(timeout)); 325 } 326 } 327 return dev->thread.scan1 != dev->thread.scan2; 328 } 329 330 static int tvaudio_checkcarrier(struct saa7134_dev *dev, struct mainscan *scan) 331 { 332 __s32 left,right,value; 333 334 if (!(dev->tvnorm->id & scan->std)) { 335 value = 0; 336 audio_dbg(1, "skipping %d.%03d MHz [%4s]\n", 337 scan->carr / 1000, scan->carr % 1000, scan->name); 338 return 0; 339 } 340 341 if (audio_debug > 1) { 342 int i; 343 audio_dbg(1, "debug %d:", scan->carr); 344 for (i = -150; i <= 150; i += 30) { 345 tvaudio_setcarrier(dev,scan->carr+i,scan->carr+i); 346 saa_readl(SAA7134_LEVEL_READOUT1 >> 2); 347 if (tvaudio_sleep(dev,SCAN_SAMPLE_DELAY)) 348 return -1; 349 value = saa_readl(SAA7134_LEVEL_READOUT1 >> 2); 350 if (0 == i) 351 pr_cont(" # %6d # ", value >> 16); 352 else 353 pr_cont(" %6d", value >> 16); 354 } 355 pr_cont("\n"); 356 } 357 358 tvaudio_setcarrier(dev,scan->carr-90,scan->carr-90); 359 saa_readl(SAA7134_LEVEL_READOUT1 >> 2); 360 if (tvaudio_sleep(dev,SCAN_SAMPLE_DELAY)) 361 return -1; 362 left = saa_readl(SAA7134_LEVEL_READOUT1 >> 2); 363 364 tvaudio_setcarrier(dev,scan->carr+90,scan->carr+90); 365 saa_readl(SAA7134_LEVEL_READOUT1 >> 2); 366 if (tvaudio_sleep(dev,SCAN_SAMPLE_DELAY)) 367 return -1; 368 right = saa_readl(SAA7134_LEVEL_READOUT1 >> 2); 369 370 left >>= 16; 371 right >>= 16; 372 value = left > right ? left - right : right - left; 373 audio_dbg(1, "scanning %d.%03d MHz [%4s] => dc is %5d [%d/%d]\n", 374 scan->carr / 1000, scan->carr % 1000, 375 scan->name, value, left, right); 376 return value; 377 } 378 379 380 static int tvaudio_getstereo(struct saa7134_dev *dev, struct saa7134_tvaudio *audio) 381 { 382 __u32 idp, nicam, nicam_status; 383 int retval = -1; 384 385 switch (audio->mode) { 386 case TVAUDIO_FM_MONO: 387 return V4L2_TUNER_SUB_MONO; 388 case TVAUDIO_FM_K_STEREO: 389 case TVAUDIO_FM_BG_STEREO: 390 idp = (saa_readb(SAA7134_IDENT_SIF) & 0xe0) >> 5; 391 audio_dbg(1, "getstereo: fm/stereo: idp=0x%x\n", idp); 392 if (0x03 == (idp & 0x03)) 393 retval = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2; 394 else if (0x05 == (idp & 0x05)) 395 retval = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO; 396 else if (0x01 == (idp & 0x01)) 397 retval = V4L2_TUNER_SUB_MONO; 398 break; 399 case TVAUDIO_FM_SAT_STEREO: 400 /* not implemented (yet) */ 401 break; 402 case TVAUDIO_NICAM_FM: 403 case TVAUDIO_NICAM_AM: 404 nicam = saa_readb(SAA7134_AUDIO_STATUS); 405 audio_dbg(1, "getstereo: nicam=0x%x\n", nicam); 406 if (nicam & 0x1) { 407 nicam_status = saa_readb(SAA7134_NICAM_STATUS); 408 audio_dbg(1, "getstereo: nicam_status=0x%x\n", 409 nicam_status); 410 411 switch (nicam_status & 0x03) { 412 case 0x01: 413 retval = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2; 414 break; 415 case 0x02: 416 retval = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO; 417 break; 418 default: 419 retval = V4L2_TUNER_SUB_MONO; 420 } 421 } else { 422 /* No nicam detected */ 423 } 424 break; 425 } 426 if (retval != -1) 427 audio_dbg(1, "found audio subchannels:%s%s%s%s\n", 428 (retval & V4L2_TUNER_SUB_MONO) ? " mono" : "", 429 (retval & V4L2_TUNER_SUB_STEREO) ? " stereo" : "", 430 (retval & V4L2_TUNER_SUB_LANG1) ? " lang1" : "", 431 (retval & V4L2_TUNER_SUB_LANG2) ? " lang2" : ""); 432 return retval; 433 } 434 435 static int tvaudio_setstereo(struct saa7134_dev *dev, struct saa7134_tvaudio *audio, 436 u32 mode) 437 { 438 static char *name[] = { 439 [ V4L2_TUNER_MODE_MONO ] = "mono", 440 [ V4L2_TUNER_MODE_STEREO ] = "stereo", 441 [ V4L2_TUNER_MODE_LANG1 ] = "lang1", 442 [ V4L2_TUNER_MODE_LANG2 ] = "lang2", 443 [ V4L2_TUNER_MODE_LANG1_LANG2 ] = "lang1+lang2", 444 }; 445 static u32 fm[] = { 446 [ V4L2_TUNER_MODE_MONO ] = 0x00, /* ch1 */ 447 [ V4L2_TUNER_MODE_STEREO ] = 0x80, /* auto */ 448 [ V4L2_TUNER_MODE_LANG1 ] = 0x00, /* ch1 */ 449 [ V4L2_TUNER_MODE_LANG2 ] = 0x01, /* ch2 */ 450 [ V4L2_TUNER_MODE_LANG1_LANG2 ] = 0x80, /* auto */ 451 }; 452 u32 reg; 453 454 switch (audio->mode) { 455 case TVAUDIO_FM_MONO: 456 /* nothing to do ... */ 457 break; 458 case TVAUDIO_FM_K_STEREO: 459 case TVAUDIO_FM_BG_STEREO: 460 case TVAUDIO_NICAM_AM: 461 case TVAUDIO_NICAM_FM: 462 audio_dbg(1, "setstereo [fm] => %s\n", 463 name[mode % ARRAY_SIZE(name)]); 464 reg = fm[ mode % ARRAY_SIZE(fm) ]; 465 saa_writeb(SAA7134_FM_DEMATRIX, reg); 466 break; 467 case TVAUDIO_FM_SAT_STEREO: 468 /* Not implemented */ 469 break; 470 } 471 return 0; 472 } 473 474 static int tvaudio_thread(void *data) 475 { 476 struct saa7134_dev *dev = data; 477 int carr_vals[ARRAY_SIZE(mainscan)]; 478 unsigned int i, audio, nscan; 479 int max1,max2,carrier,rx,mode,lastmode,default_carrier; 480 481 set_freezable(); 482 483 for (;;) { 484 tvaudio_sleep(dev,-1); 485 if (kthread_should_stop()) 486 goto done; 487 488 restart: 489 try_to_freeze(); 490 491 dev->thread.scan1 = dev->thread.scan2; 492 audio_dbg(1, "tvaudio thread scan start [%d]\n", 493 dev->thread.scan1); 494 dev->tvaudio = NULL; 495 496 saa_writeb(SAA7134_MONITOR_SELECT, 0xa0); 497 saa_writeb(SAA7134_FM_DEMATRIX, 0x80); 498 499 if (dev->ctl_automute) 500 dev->automute = 1; 501 502 mute_input_7134(dev); 503 504 /* give the tuner some time */ 505 if (tvaudio_sleep(dev,SCAN_INITIAL_DELAY)) 506 goto restart; 507 508 max1 = 0; 509 max2 = 0; 510 nscan = 0; 511 carrier = 0; 512 default_carrier = 0; 513 for (i = 0; i < ARRAY_SIZE(mainscan); i++) { 514 if (!(dev->tvnorm->id & mainscan[i].std)) 515 continue; 516 if (!default_carrier) 517 default_carrier = mainscan[i].carr; 518 nscan++; 519 } 520 521 if (1 == nscan) { 522 /* only one candidate -- skip scan ;) */ 523 audio_dbg(1, "only one main carrier candidate - skipping scan\n"); 524 max1 = 12345; 525 carrier = default_carrier; 526 } else { 527 /* scan for the main carrier */ 528 saa_writeb(SAA7134_MONITOR_SELECT,0x00); 529 tvaudio_setmode(dev,&tvaudio[0],NULL); 530 for (i = 0; i < ARRAY_SIZE(mainscan); i++) { 531 carr_vals[i] = tvaudio_checkcarrier(dev, mainscan+i); 532 if (dev->thread.scan1 != dev->thread.scan2) 533 goto restart; 534 } 535 for (max1 = 0, max2 = 0, i = 0; i < ARRAY_SIZE(mainscan); i++) { 536 if (max1 < carr_vals[i]) { 537 max2 = max1; 538 max1 = carr_vals[i]; 539 carrier = mainscan[i].carr; 540 } else if (max2 < carr_vals[i]) { 541 max2 = carr_vals[i]; 542 } 543 } 544 } 545 546 if (0 != carrier && max1 > 2000 && max1 > max2*3) { 547 /* found good carrier */ 548 audio_dbg(1, "found %s main sound carrier @ %d.%03d MHz [%d/%d]\n", 549 dev->tvnorm->name, carrier/1000, carrier%1000, 550 max1, max2); 551 dev->last_carrier = carrier; 552 dev->automute = 0; 553 554 } else if (0 != dev->last_carrier) { 555 /* no carrier -- try last detected one as fallback */ 556 carrier = dev->last_carrier; 557 audio_dbg(1, "audio carrier scan failed, using %d.%03d MHz [last detected]\n", 558 carrier/1000, carrier%1000); 559 dev->automute = 1; 560 561 } else { 562 /* no carrier + no fallback -- use default */ 563 carrier = default_carrier; 564 audio_dbg(1, "audio carrier scan failed, using %d.%03d MHz [default]\n", 565 carrier/1000, carrier%1000); 566 dev->automute = 1; 567 } 568 tvaudio_setcarrier(dev,carrier,carrier); 569 saa_andorb(SAA7134_STEREO_DAC_OUTPUT_SELECT, 0x30, 0x00); 570 saa7134_tvaudio_setmute(dev); 571 /* find the exact tv audio norm */ 572 for (audio = UNSET, i = 0; i < TVAUDIO; i++) { 573 if (dev->tvnorm->id != UNSET && 574 !(dev->tvnorm->id & tvaudio[i].std)) 575 continue; 576 if (tvaudio[i].carr1 != carrier) 577 continue; 578 /* Note: at least the primary carrier is right here */ 579 if (UNSET == audio) 580 audio = i; 581 tvaudio_setmode(dev,&tvaudio[i],"trying"); 582 if (tvaudio_sleep(dev,SCAN_SUBCARRIER_DELAY)) 583 goto restart; 584 if (-1 != tvaudio_getstereo(dev,&tvaudio[i])) { 585 audio = i; 586 break; 587 } 588 } 589 saa_andorb(SAA7134_STEREO_DAC_OUTPUT_SELECT, 0x30, 0x30); 590 if (UNSET == audio) 591 continue; 592 tvaudio_setmode(dev,&tvaudio[audio],"using"); 593 594 tvaudio_setstereo(dev,&tvaudio[audio],V4L2_TUNER_MODE_MONO); 595 dev->tvaudio = &tvaudio[audio]; 596 597 lastmode = 42; 598 for (;;) { 599 600 try_to_freeze(); 601 602 if (tvaudio_sleep(dev,5000)) 603 goto restart; 604 if (kthread_should_stop()) 605 break; 606 if (UNSET == dev->thread.mode) { 607 rx = tvaudio_getstereo(dev, &tvaudio[audio]); 608 mode = saa7134_tvaudio_rx2mode(rx); 609 } else { 610 mode = dev->thread.mode; 611 } 612 if (lastmode != mode) { 613 tvaudio_setstereo(dev,&tvaudio[audio],mode); 614 lastmode = mode; 615 } 616 } 617 } 618 619 done: 620 dev->thread.stopped = 1; 621 return 0; 622 } 623 624 /* ------------------------------------------------------------------ */ 625 /* saa7133 / saa7135 code */ 626 627 static char *stdres[0x20] = { 628 [0x00] = "no standard detected", 629 [0x01] = "B/G (in progress)", 630 [0x02] = "D/K (in progress)", 631 [0x03] = "M (in progress)", 632 633 [0x04] = "B/G A2", 634 [0x05] = "B/G NICAM", 635 [0x06] = "D/K A2 (1)", 636 [0x07] = "D/K A2 (2)", 637 [0x08] = "D/K A2 (3)", 638 [0x09] = "D/K NICAM", 639 [0x0a] = "L NICAM", 640 [0x0b] = "I NICAM", 641 642 [0x0c] = "M Korea", 643 [0x0d] = "M BTSC ", 644 [0x0e] = "M EIAJ", 645 646 [0x0f] = "FM radio / IF 10.7 / 50 deemp", 647 [0x10] = "FM radio / IF 10.7 / 75 deemp", 648 [0x11] = "FM radio / IF sel / 50 deemp", 649 [0x12] = "FM radio / IF sel / 75 deemp", 650 651 [0x13 ... 0x1e ] = "unknown", 652 [0x1f] = "??? [in progress]", 653 }; 654 655 #define DSP_RETRY 32 656 #define DSP_DELAY 16 657 #define SAA7135_DSP_RWCLEAR_RERR 1 658 659 static inline int saa_dsp_reset_error_bit(struct saa7134_dev *dev) 660 { 661 int state = saa_readb(SAA7135_DSP_RWSTATE); 662 if (unlikely(state & SAA7135_DSP_RWSTATE_ERR)) { 663 audio_dbg(2, "%s: resetting error bit\n", dev->name); 664 saa_writeb(SAA7135_DSP_RWCLEAR, SAA7135_DSP_RWCLEAR_RERR); 665 } 666 return 0; 667 } 668 669 static inline int saa_dsp_wait_bit(struct saa7134_dev *dev, int bit) 670 { 671 int state, count = DSP_RETRY; 672 673 state = saa_readb(SAA7135_DSP_RWSTATE); 674 if (unlikely(state & SAA7135_DSP_RWSTATE_ERR)) { 675 pr_warn("%s: dsp access error\n", dev->name); 676 saa_dsp_reset_error_bit(dev); 677 return -EIO; 678 } 679 while (0 == (state & bit)) { 680 if (unlikely(0 == count)) { 681 pr_err("dsp access wait timeout [bit=%s]\n", 682 (bit & SAA7135_DSP_RWSTATE_WRR) ? "WRR" : 683 (bit & SAA7135_DSP_RWSTATE_RDB) ? "RDB" : 684 (bit & SAA7135_DSP_RWSTATE_IDA) ? "IDA" : 685 "???"); 686 return -EIO; 687 } 688 saa_wait(DSP_DELAY); 689 state = saa_readb(SAA7135_DSP_RWSTATE); 690 count--; 691 } 692 return 0; 693 } 694 695 696 int saa_dsp_writel(struct saa7134_dev *dev, int reg, u32 value) 697 { 698 int err; 699 700 audio_dbg(2, "dsp write reg 0x%x = 0x%06x\n", reg << 2, value); 701 err = saa_dsp_wait_bit(dev,SAA7135_DSP_RWSTATE_WRR); 702 if (err < 0) 703 return err; 704 saa_writel(reg,value); 705 err = saa_dsp_wait_bit(dev,SAA7135_DSP_RWSTATE_WRR); 706 if (err < 0) 707 return err; 708 return 0; 709 } 710 711 static int getstereo_7133(struct saa7134_dev *dev) 712 { 713 int retval = V4L2_TUNER_SUB_MONO; 714 u32 value; 715 716 value = saa_readl(0x528 >> 2); 717 if (value & 0x20) 718 retval = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO; 719 if (value & 0x40) 720 retval = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2; 721 return retval; 722 } 723 724 static int mute_input_7133(struct saa7134_dev *dev) 725 { 726 u32 reg = 0; 727 u32 xbarin, xbarout; 728 int mask; 729 struct saa7134_input *in; 730 731 xbarin = 0x03; 732 switch (dev->input->amux) { 733 case TV: 734 reg = 0x02; 735 xbarin = 0; 736 break; 737 case LINE1: 738 reg = 0x00; 739 break; 740 case LINE2: 741 case LINE2_LEFT: 742 reg = 0x09; 743 break; 744 } 745 saa_dsp_writel(dev, 0x464 >> 2, xbarin); 746 if (dev->ctl_mute) { 747 reg = 0x07; 748 xbarout = 0xbbbbbb; 749 } else 750 xbarout = 0xbbbb10; 751 saa_dsp_writel(dev, 0x46c >> 2, xbarout); 752 753 saa_writel(0x594 >> 2, reg); 754 755 756 /* switch gpio-connected external audio mux */ 757 if (0 != card(dev).gpiomask) { 758 mask = card(dev).gpiomask; 759 760 if (card(dev).mute.type && dev->ctl_mute) 761 in = &card(dev).mute; 762 else 763 in = dev->input; 764 765 saa_andorl(SAA7134_GPIO_GPMODE0 >> 2, mask, mask); 766 saa_andorl(SAA7134_GPIO_GPSTATUS0 >> 2, mask, in->gpio); 767 saa7134_track_gpio(dev, saa7134_input_name[in->type]); 768 } 769 770 return 0; 771 } 772 773 static int tvaudio_thread_ddep(void *data) 774 { 775 struct saa7134_dev *dev = data; 776 u32 value, norms; 777 778 set_freezable(); 779 for (;;) { 780 tvaudio_sleep(dev,-1); 781 if (kthread_should_stop()) 782 goto done; 783 restart: 784 try_to_freeze(); 785 786 dev->thread.scan1 = dev->thread.scan2; 787 audio_dbg(1, "tvaudio thread scan start [%d]\n", 788 dev->thread.scan1); 789 790 if (audio_ddep >= 0x04 && audio_ddep <= 0x0e) { 791 /* insmod option override */ 792 norms = (audio_ddep << 2) | 0x01; 793 audio_dbg(1, "ddep override: %s\n", 794 stdres[audio_ddep]); 795 } else if (&card(dev).radio == dev->input) { 796 audio_dbg(1, "FM Radio\n"); 797 if (dev->tuner_type == TUNER_PHILIPS_TDA8290) { 798 norms = (0x11 << 2) | 0x01; 799 /* set IF frequency to 5.5 MHz */ 800 saa_dsp_writel(dev, 0x42c >> 2, 0x729555); 801 } else { 802 norms = (0x0f << 2) | 0x01; 803 } 804 } else { 805 /* (let chip) scan for sound carrier */ 806 norms = 0; 807 if (dev->tvnorm->id & (V4L2_STD_B | V4L2_STD_GH)) 808 norms |= 0x04; 809 if (dev->tvnorm->id & V4L2_STD_PAL_I) 810 norms |= 0x20; 811 if (dev->tvnorm->id & V4L2_STD_DK) 812 norms |= 0x08; 813 if (dev->tvnorm->id & V4L2_STD_MN) 814 norms |= 0x40; 815 if (dev->tvnorm->id & (V4L2_STD_SECAM_L | V4L2_STD_SECAM_LC)) 816 norms |= 0x10; 817 if (0 == norms) 818 norms = 0x7c; /* all */ 819 audio_dbg(1, "scanning:%s%s%s%s%s\n", 820 (norms & 0x04) ? " B/G" : "", 821 (norms & 0x08) ? " D/K" : "", 822 (norms & 0x10) ? " L/L'" : "", 823 (norms & 0x20) ? " I" : "", 824 (norms & 0x40) ? " M" : ""); 825 } 826 827 /* kick automatic standard detection */ 828 saa_dsp_writel(dev, 0x454 >> 2, 0); 829 saa_dsp_writel(dev, 0x454 >> 2, norms | 0x80); 830 831 /* setup crossbars */ 832 saa_dsp_writel(dev, 0x464 >> 2, 0x000000); 833 saa_dsp_writel(dev, 0x470 >> 2, 0x101010); 834 835 if (tvaudio_sleep(dev,3000)) 836 goto restart; 837 value = saa_readl(0x528 >> 2) & 0xffffff; 838 839 audio_dbg(1, "tvaudio thread status: 0x%x [%s%s%s]\n", 840 value, stdres[value & 0x1f], 841 (value & 0x000020) ? ",stereo" : "", 842 (value & 0x000040) ? ",dual" : ""); 843 audio_dbg(1, "detailed status: %s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s\n", 844 (value & 0x000080) ? " A2/EIAJ pilot tone " : "", 845 (value & 0x000100) ? " A2/EIAJ dual " : "", 846 (value & 0x000200) ? " A2/EIAJ stereo " : "", 847 (value & 0x000400) ? " A2/EIAJ noise mute " : "", 848 849 (value & 0x000800) ? " BTSC/FM radio pilot " : "", 850 (value & 0x001000) ? " SAP carrier " : "", 851 (value & 0x002000) ? " BTSC stereo noise mute " : "", 852 (value & 0x004000) ? " SAP noise mute " : "", 853 (value & 0x008000) ? " VDSP " : "", 854 855 (value & 0x010000) ? " NICST " : "", 856 (value & 0x020000) ? " NICDU " : "", 857 (value & 0x040000) ? " NICAM muted " : "", 858 (value & 0x080000) ? " NICAM reserve sound " : "", 859 860 (value & 0x100000) ? " init done " : ""); 861 } 862 863 done: 864 dev->thread.stopped = 1; 865 return 0; 866 } 867 868 /* ------------------------------------------------------------------ */ 869 /* common stuff + external entry points */ 870 871 void saa7134_enable_i2s(struct saa7134_dev *dev) 872 { 873 int i2s_format; 874 875 if (!card_is_empress(dev)) 876 return; 877 878 if (dev->pci->device == PCI_DEVICE_ID_PHILIPS_SAA7130) 879 return; 880 881 /* configure GPIO for out */ 882 saa_andorl(SAA7134_GPIO_GPMODE0 >> 2, 0x0E000000, 0x00000000); 883 884 switch (dev->pci->device) { 885 case PCI_DEVICE_ID_PHILIPS_SAA7133: 886 case PCI_DEVICE_ID_PHILIPS_SAA7135: 887 /* Set I2S format (SONY) */ 888 saa_writeb(SAA7133_I2S_AUDIO_CONTROL, 0x00); 889 /* Start I2S */ 890 saa_writeb(SAA7134_I2S_AUDIO_OUTPUT, 0x11); 891 break; 892 893 case PCI_DEVICE_ID_PHILIPS_SAA7134: 894 i2s_format = (dev->input->amux == TV) ? 0x00 : 0x01; 895 896 /* enable I2S audio output for the mpeg encoder */ 897 saa_writeb(SAA7134_I2S_OUTPUT_SELECT, 0x80); 898 saa_writeb(SAA7134_I2S_OUTPUT_FORMAT, i2s_format); 899 saa_writeb(SAA7134_I2S_OUTPUT_LEVEL, 0x0F); 900 saa_writeb(SAA7134_I2S_AUDIO_OUTPUT, 0x01); 901 902 default: 903 break; 904 } 905 } 906 907 int saa7134_tvaudio_rx2mode(u32 rx) 908 { 909 u32 mode; 910 911 mode = V4L2_TUNER_MODE_MONO; 912 if (rx & V4L2_TUNER_SUB_STEREO) 913 mode = V4L2_TUNER_MODE_STEREO; 914 else if (rx & V4L2_TUNER_SUB_LANG1) 915 mode = V4L2_TUNER_MODE_LANG1; 916 else if (rx & V4L2_TUNER_SUB_LANG2) 917 mode = V4L2_TUNER_MODE_LANG2; 918 return mode; 919 } 920 921 void saa7134_tvaudio_setmute(struct saa7134_dev *dev) 922 { 923 switch (dev->pci->device) { 924 case PCI_DEVICE_ID_PHILIPS_SAA7130: 925 case PCI_DEVICE_ID_PHILIPS_SAA7134: 926 mute_input_7134(dev); 927 break; 928 case PCI_DEVICE_ID_PHILIPS_SAA7133: 929 case PCI_DEVICE_ID_PHILIPS_SAA7135: 930 mute_input_7133(dev); 931 break; 932 } 933 } 934 935 void saa7134_tvaudio_setinput(struct saa7134_dev *dev, 936 struct saa7134_input *in) 937 { 938 dev->input = in; 939 switch (dev->pci->device) { 940 case PCI_DEVICE_ID_PHILIPS_SAA7130: 941 case PCI_DEVICE_ID_PHILIPS_SAA7134: 942 mute_input_7134(dev); 943 break; 944 case PCI_DEVICE_ID_PHILIPS_SAA7133: 945 case PCI_DEVICE_ID_PHILIPS_SAA7135: 946 mute_input_7133(dev); 947 break; 948 } 949 saa7134_enable_i2s(dev); 950 } 951 952 void saa7134_tvaudio_setvolume(struct saa7134_dev *dev, int level) 953 { 954 switch (dev->pci->device) { 955 case PCI_DEVICE_ID_PHILIPS_SAA7134: 956 saa_writeb(SAA7134_CHANNEL1_LEVEL, level & 0x1f); 957 saa_writeb(SAA7134_CHANNEL2_LEVEL, level & 0x1f); 958 saa_writeb(SAA7134_NICAM_LEVEL_ADJUST, level & 0x1f); 959 break; 960 } 961 } 962 963 int saa7134_tvaudio_getstereo(struct saa7134_dev *dev) 964 { 965 int retval = V4L2_TUNER_SUB_MONO; 966 967 switch (dev->pci->device) { 968 case PCI_DEVICE_ID_PHILIPS_SAA7134: 969 if (dev->tvaudio) 970 retval = tvaudio_getstereo(dev,dev->tvaudio); 971 break; 972 case PCI_DEVICE_ID_PHILIPS_SAA7133: 973 case PCI_DEVICE_ID_PHILIPS_SAA7135: 974 retval = getstereo_7133(dev); 975 break; 976 } 977 return retval; 978 } 979 980 void saa7134_tvaudio_init(struct saa7134_dev *dev) 981 { 982 int clock = saa7134_boards[dev->board].audio_clock; 983 984 if (UNSET != audio_clock_override) 985 clock = audio_clock_override; 986 987 switch (dev->pci->device) { 988 case PCI_DEVICE_ID_PHILIPS_SAA7134: 989 /* init all audio registers */ 990 saa_writeb(SAA7134_AUDIO_PLL_CTRL, 0x00); 991 if (need_resched()) 992 schedule(); 993 else 994 udelay(10); 995 996 saa_writeb(SAA7134_AUDIO_CLOCK0, clock & 0xff); 997 saa_writeb(SAA7134_AUDIO_CLOCK1, (clock >> 8) & 0xff); 998 saa_writeb(SAA7134_AUDIO_CLOCK2, (clock >> 16) & 0xff); 999 /* frame locked audio is mandatory for NICAM */ 1000 saa_writeb(SAA7134_AUDIO_PLL_CTRL, 0x01); 1001 saa_writeb(SAA7134_NICAM_ERROR_LOW, 0x14); 1002 saa_writeb(SAA7134_NICAM_ERROR_HIGH, 0x50); 1003 break; 1004 case PCI_DEVICE_ID_PHILIPS_SAA7133: 1005 case PCI_DEVICE_ID_PHILIPS_SAA7135: 1006 saa_writel(0x598 >> 2, clock); 1007 saa_dsp_writel(dev, 0x474 >> 2, 0x00); 1008 saa_dsp_writel(dev, 0x450 >> 2, 0x00); 1009 } 1010 } 1011 1012 int saa7134_tvaudio_init2(struct saa7134_dev *dev) 1013 { 1014 int (*my_thread)(void *data) = NULL; 1015 1016 switch (dev->pci->device) { 1017 case PCI_DEVICE_ID_PHILIPS_SAA7134: 1018 my_thread = tvaudio_thread; 1019 break; 1020 case PCI_DEVICE_ID_PHILIPS_SAA7133: 1021 case PCI_DEVICE_ID_PHILIPS_SAA7135: 1022 my_thread = tvaudio_thread_ddep; 1023 break; 1024 } 1025 1026 dev->thread.thread = NULL; 1027 dev->thread.scan1 = dev->thread.scan2 = 0; 1028 if (my_thread) { 1029 saa7134_tvaudio_init(dev); 1030 /* start tvaudio thread */ 1031 dev->thread.thread = kthread_run(my_thread, dev, "%s", dev->name); 1032 if (IS_ERR(dev->thread.thread)) { 1033 pr_warn("%s: kernel_thread() failed\n", 1034 dev->name); 1035 /* XXX: missing error handling here */ 1036 } 1037 } 1038 1039 saa7134_enable_i2s(dev); 1040 return 0; 1041 } 1042 1043 int saa7134_tvaudio_close(struct saa7134_dev *dev) 1044 { 1045 dev->automute = 1; 1046 /* anything else to undo? */ 1047 return 0; 1048 } 1049 1050 int saa7134_tvaudio_fini(struct saa7134_dev *dev) 1051 { 1052 /* shutdown tvaudio thread */ 1053 if (dev->thread.thread && !dev->thread.stopped) 1054 kthread_stop(dev->thread.thread); 1055 1056 saa_andorb(SAA7134_ANALOG_IO_SELECT, 0x07, 0x00); /* LINE1 */ 1057 return 0; 1058 } 1059 1060 int saa7134_tvaudio_do_scan(struct saa7134_dev *dev) 1061 { 1062 if (dev->input->amux != TV) { 1063 audio_dbg(1, "sound IF not in use, skipping scan\n"); 1064 dev->automute = 0; 1065 saa7134_tvaudio_setmute(dev); 1066 } else if (dev->thread.thread) { 1067 dev->thread.mode = UNSET; 1068 dev->thread.scan2++; 1069 1070 if (!dev->insuspend && !dev->thread.stopped) 1071 wake_up_process(dev->thread.thread); 1072 } else { 1073 dev->automute = 0; 1074 saa7134_tvaudio_setmute(dev); 1075 } 1076 return 0; 1077 } 1078 1079 EXPORT_SYMBOL(saa_dsp_writel); 1080 EXPORT_SYMBOL(saa7134_tvaudio_setmute); 1081