1 /* 2 * Copyright (c) by Jaroslav Kysela <perex@perex.cz> 3 * Routines for control of 16-bit SoundBlaster cards and clones 4 * Note: This is very ugly hardware which uses one 8-bit DMA channel and 5 * second 16-bit DMA channel. Unfortunately 8-bit DMA channel can't 6 * transfer 16-bit samples and 16-bit DMA channels can't transfer 7 * 8-bit samples. This make full duplex more complicated than 8 * can be... People, don't buy these soundcards for full 16-bit 9 * duplex!!! 10 * Note: 16-bit wide is assigned to first direction which made request. 11 * With full duplex - playback is preferred with abstract layer. 12 * 13 * Note: Some chip revisions have hardware bug. Changing capture 14 * channel from full-duplex 8bit DMA to 16bit DMA will block 15 * 16bit DMA transfers from DSP chip (capture) until 8bit transfer 16 * to DSP chip (playback) starts. This bug can be avoided with 17 * "16bit DMA Allocation" setting set to Playback or Capture. 18 * 19 * 20 * This program is free software; you can redistribute it and/or modify 21 * it under the terms of the GNU General Public License as published by 22 * the Free Software Foundation; either version 2 of the License, or 23 * (at your option) any later version. 24 * 25 * This program is distributed in the hope that it will be useful, 26 * but WITHOUT ANY WARRANTY; without even the implied warranty of 27 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 28 * GNU General Public License for more details. 29 * 30 * You should have received a copy of the GNU General Public License 31 * along with this program; if not, write to the Free Software 32 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 33 * 34 */ 35 36 #include <linux/io.h> 37 #include <asm/dma.h> 38 #include <linux/init.h> 39 #include <linux/time.h> 40 #include <linux/module.h> 41 #include <sound/core.h> 42 #include <sound/sb.h> 43 #include <sound/sb16_csp.h> 44 #include <sound/mpu401.h> 45 #include <sound/control.h> 46 #include <sound/info.h> 47 48 MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>"); 49 MODULE_DESCRIPTION("Routines for control of 16-bit SoundBlaster cards and clones"); 50 MODULE_LICENSE("GPL"); 51 52 #ifdef CONFIG_SND_SB16_CSP 53 static void snd_sb16_csp_playback_prepare(struct snd_sb *chip, struct snd_pcm_runtime *runtime) 54 { 55 if (chip->hardware == SB_HW_16CSP) { 56 struct snd_sb_csp *csp = chip->csp; 57 58 if (csp->running & SNDRV_SB_CSP_ST_LOADED) { 59 /* manually loaded codec */ 60 if ((csp->mode & SNDRV_SB_CSP_MODE_DSP_WRITE) && 61 ((1U << runtime->format) == csp->acc_format)) { 62 /* Supported runtime PCM format for playback */ 63 if (csp->ops.csp_use(csp) == 0) { 64 /* If CSP was successfully acquired */ 65 goto __start_CSP; 66 } 67 } else if ((csp->mode & SNDRV_SB_CSP_MODE_QSOUND) && (csp->q_enabled)) { 68 /* QSound decoder is loaded and enabled */ 69 if ((1 << runtime->format) & (SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U8 | 70 SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE)) { 71 /* Only for simple PCM formats */ 72 if (csp->ops.csp_use(csp) == 0) { 73 /* If CSP was successfully acquired */ 74 goto __start_CSP; 75 } 76 } 77 } 78 } else if (csp->ops.csp_use(csp) == 0) { 79 /* Acquire CSP and try to autoload hardware codec */ 80 if (csp->ops.csp_autoload(csp, runtime->format, SNDRV_SB_CSP_MODE_DSP_WRITE)) { 81 /* Unsupported format, release CSP */ 82 csp->ops.csp_unuse(csp); 83 } else { 84 __start_CSP: 85 /* Try to start CSP */ 86 if (csp->ops.csp_start(csp, (chip->mode & SB_MODE_PLAYBACK_16) ? 87 SNDRV_SB_CSP_SAMPLE_16BIT : SNDRV_SB_CSP_SAMPLE_8BIT, 88 (runtime->channels > 1) ? 89 SNDRV_SB_CSP_STEREO : SNDRV_SB_CSP_MONO)) { 90 /* Failed, release CSP */ 91 csp->ops.csp_unuse(csp); 92 } else { 93 /* Success, CSP acquired and running */ 94 chip->open = SNDRV_SB_CSP_MODE_DSP_WRITE; 95 } 96 } 97 } 98 } 99 } 100 101 static void snd_sb16_csp_capture_prepare(struct snd_sb *chip, struct snd_pcm_runtime *runtime) 102 { 103 if (chip->hardware == SB_HW_16CSP) { 104 struct snd_sb_csp *csp = chip->csp; 105 106 if (csp->running & SNDRV_SB_CSP_ST_LOADED) { 107 /* manually loaded codec */ 108 if ((csp->mode & SNDRV_SB_CSP_MODE_DSP_READ) && 109 ((1U << runtime->format) == csp->acc_format)) { 110 /* Supported runtime PCM format for capture */ 111 if (csp->ops.csp_use(csp) == 0) { 112 /* If CSP was successfully acquired */ 113 goto __start_CSP; 114 } 115 } 116 } else if (csp->ops.csp_use(csp) == 0) { 117 /* Acquire CSP and try to autoload hardware codec */ 118 if (csp->ops.csp_autoload(csp, runtime->format, SNDRV_SB_CSP_MODE_DSP_READ)) { 119 /* Unsupported format, release CSP */ 120 csp->ops.csp_unuse(csp); 121 } else { 122 __start_CSP: 123 /* Try to start CSP */ 124 if (csp->ops.csp_start(csp, (chip->mode & SB_MODE_CAPTURE_16) ? 125 SNDRV_SB_CSP_SAMPLE_16BIT : SNDRV_SB_CSP_SAMPLE_8BIT, 126 (runtime->channels > 1) ? 127 SNDRV_SB_CSP_STEREO : SNDRV_SB_CSP_MONO)) { 128 /* Failed, release CSP */ 129 csp->ops.csp_unuse(csp); 130 } else { 131 /* Success, CSP acquired and running */ 132 chip->open = SNDRV_SB_CSP_MODE_DSP_READ; 133 } 134 } 135 } 136 } 137 } 138 139 static void snd_sb16_csp_update(struct snd_sb *chip) 140 { 141 if (chip->hardware == SB_HW_16CSP) { 142 struct snd_sb_csp *csp = chip->csp; 143 144 if (csp->qpos_changed) { 145 spin_lock(&chip->reg_lock); 146 csp->ops.csp_qsound_transfer (csp); 147 spin_unlock(&chip->reg_lock); 148 } 149 } 150 } 151 152 static void snd_sb16_csp_playback_open(struct snd_sb *chip, struct snd_pcm_runtime *runtime) 153 { 154 /* CSP decoders (QSound excluded) support only 16bit transfers */ 155 if (chip->hardware == SB_HW_16CSP) { 156 struct snd_sb_csp *csp = chip->csp; 157 158 if (csp->running & SNDRV_SB_CSP_ST_LOADED) { 159 /* manually loaded codec */ 160 if (csp->mode & SNDRV_SB_CSP_MODE_DSP_WRITE) { 161 runtime->hw.formats |= csp->acc_format; 162 } 163 } else { 164 /* autoloaded codecs */ 165 runtime->hw.formats |= SNDRV_PCM_FMTBIT_MU_LAW | SNDRV_PCM_FMTBIT_A_LAW | 166 SNDRV_PCM_FMTBIT_IMA_ADPCM; 167 } 168 } 169 } 170 171 static void snd_sb16_csp_playback_close(struct snd_sb *chip) 172 { 173 if ((chip->hardware == SB_HW_16CSP) && (chip->open == SNDRV_SB_CSP_MODE_DSP_WRITE)) { 174 struct snd_sb_csp *csp = chip->csp; 175 176 if (csp->ops.csp_stop(csp) == 0) { 177 csp->ops.csp_unuse(csp); 178 chip->open = 0; 179 } 180 } 181 } 182 183 static void snd_sb16_csp_capture_open(struct snd_sb *chip, struct snd_pcm_runtime *runtime) 184 { 185 /* CSP coders support only 16bit transfers */ 186 if (chip->hardware == SB_HW_16CSP) { 187 struct snd_sb_csp *csp = chip->csp; 188 189 if (csp->running & SNDRV_SB_CSP_ST_LOADED) { 190 /* manually loaded codec */ 191 if (csp->mode & SNDRV_SB_CSP_MODE_DSP_READ) { 192 runtime->hw.formats |= csp->acc_format; 193 } 194 } else { 195 /* autoloaded codecs */ 196 runtime->hw.formats |= SNDRV_PCM_FMTBIT_MU_LAW | SNDRV_PCM_FMTBIT_A_LAW | 197 SNDRV_PCM_FMTBIT_IMA_ADPCM; 198 } 199 } 200 } 201 202 static void snd_sb16_csp_capture_close(struct snd_sb *chip) 203 { 204 if ((chip->hardware == SB_HW_16CSP) && (chip->open == SNDRV_SB_CSP_MODE_DSP_READ)) { 205 struct snd_sb_csp *csp = chip->csp; 206 207 if (csp->ops.csp_stop(csp) == 0) { 208 csp->ops.csp_unuse(csp); 209 chip->open = 0; 210 } 211 } 212 } 213 #else 214 #define snd_sb16_csp_playback_prepare(chip, runtime) /*nop*/ 215 #define snd_sb16_csp_capture_prepare(chip, runtime) /*nop*/ 216 #define snd_sb16_csp_update(chip) /*nop*/ 217 #define snd_sb16_csp_playback_open(chip, runtime) /*nop*/ 218 #define snd_sb16_csp_playback_close(chip) /*nop*/ 219 #define snd_sb16_csp_capture_open(chip, runtime) /*nop*/ 220 #define snd_sb16_csp_capture_close(chip) /*nop*/ 221 #endif 222 223 224 static void snd_sb16_setup_rate(struct snd_sb *chip, 225 unsigned short rate, 226 int channel) 227 { 228 unsigned long flags; 229 230 spin_lock_irqsave(&chip->reg_lock, flags); 231 if (chip->mode & (channel == SNDRV_PCM_STREAM_PLAYBACK ? SB_MODE_PLAYBACK_16 : SB_MODE_CAPTURE_16)) 232 snd_sb_ack_16bit(chip); 233 else 234 snd_sb_ack_8bit(chip); 235 if (!(chip->mode & SB_RATE_LOCK)) { 236 chip->locked_rate = rate; 237 snd_sbdsp_command(chip, SB_DSP_SAMPLE_RATE_IN); 238 snd_sbdsp_command(chip, rate >> 8); 239 snd_sbdsp_command(chip, rate & 0xff); 240 snd_sbdsp_command(chip, SB_DSP_SAMPLE_RATE_OUT); 241 snd_sbdsp_command(chip, rate >> 8); 242 snd_sbdsp_command(chip, rate & 0xff); 243 } 244 spin_unlock_irqrestore(&chip->reg_lock, flags); 245 } 246 247 static int snd_sb16_hw_params(struct snd_pcm_substream *substream, 248 struct snd_pcm_hw_params *hw_params) 249 { 250 return snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params)); 251 } 252 253 static int snd_sb16_hw_free(struct snd_pcm_substream *substream) 254 { 255 snd_pcm_lib_free_pages(substream); 256 return 0; 257 } 258 259 static int snd_sb16_playback_prepare(struct snd_pcm_substream *substream) 260 { 261 unsigned long flags; 262 struct snd_sb *chip = snd_pcm_substream_chip(substream); 263 struct snd_pcm_runtime *runtime = substream->runtime; 264 unsigned char format; 265 unsigned int size, count, dma; 266 267 snd_sb16_csp_playback_prepare(chip, runtime); 268 if (snd_pcm_format_unsigned(runtime->format) > 0) { 269 format = runtime->channels > 1 ? SB_DSP4_MODE_UNS_STEREO : SB_DSP4_MODE_UNS_MONO; 270 } else { 271 format = runtime->channels > 1 ? SB_DSP4_MODE_SIGN_STEREO : SB_DSP4_MODE_SIGN_MONO; 272 } 273 274 snd_sb16_setup_rate(chip, runtime->rate, SNDRV_PCM_STREAM_PLAYBACK); 275 size = chip->p_dma_size = snd_pcm_lib_buffer_bytes(substream); 276 dma = (chip->mode & SB_MODE_PLAYBACK_8) ? chip->dma8 : chip->dma16; 277 snd_dma_program(dma, runtime->dma_addr, size, DMA_MODE_WRITE | DMA_AUTOINIT); 278 279 count = snd_pcm_lib_period_bytes(substream); 280 spin_lock_irqsave(&chip->reg_lock, flags); 281 if (chip->mode & SB_MODE_PLAYBACK_16) { 282 count >>= 1; 283 count--; 284 snd_sbdsp_command(chip, SB_DSP4_OUT16_AI); 285 snd_sbdsp_command(chip, format); 286 snd_sbdsp_command(chip, count & 0xff); 287 snd_sbdsp_command(chip, count >> 8); 288 snd_sbdsp_command(chip, SB_DSP_DMA16_OFF); 289 } else { 290 count--; 291 snd_sbdsp_command(chip, SB_DSP4_OUT8_AI); 292 snd_sbdsp_command(chip, format); 293 snd_sbdsp_command(chip, count & 0xff); 294 snd_sbdsp_command(chip, count >> 8); 295 snd_sbdsp_command(chip, SB_DSP_DMA8_OFF); 296 } 297 spin_unlock_irqrestore(&chip->reg_lock, flags); 298 return 0; 299 } 300 301 static int snd_sb16_playback_trigger(struct snd_pcm_substream *substream, 302 int cmd) 303 { 304 struct snd_sb *chip = snd_pcm_substream_chip(substream); 305 int result = 0; 306 307 spin_lock(&chip->reg_lock); 308 switch (cmd) { 309 case SNDRV_PCM_TRIGGER_START: 310 case SNDRV_PCM_TRIGGER_RESUME: 311 chip->mode |= SB_RATE_LOCK_PLAYBACK; 312 snd_sbdsp_command(chip, chip->mode & SB_MODE_PLAYBACK_16 ? SB_DSP_DMA16_ON : SB_DSP_DMA8_ON); 313 break; 314 case SNDRV_PCM_TRIGGER_STOP: 315 case SNDRV_PCM_TRIGGER_SUSPEND: 316 snd_sbdsp_command(chip, chip->mode & SB_MODE_PLAYBACK_16 ? SB_DSP_DMA16_OFF : SB_DSP_DMA8_OFF); 317 /* next two lines are needed for some types of DSP4 (SB AWE 32 - 4.13) */ 318 if (chip->mode & SB_RATE_LOCK_CAPTURE) 319 snd_sbdsp_command(chip, chip->mode & SB_MODE_CAPTURE_16 ? SB_DSP_DMA16_ON : SB_DSP_DMA8_ON); 320 chip->mode &= ~SB_RATE_LOCK_PLAYBACK; 321 break; 322 default: 323 result = -EINVAL; 324 } 325 spin_unlock(&chip->reg_lock); 326 return result; 327 } 328 329 static int snd_sb16_capture_prepare(struct snd_pcm_substream *substream) 330 { 331 unsigned long flags; 332 struct snd_sb *chip = snd_pcm_substream_chip(substream); 333 struct snd_pcm_runtime *runtime = substream->runtime; 334 unsigned char format; 335 unsigned int size, count, dma; 336 337 snd_sb16_csp_capture_prepare(chip, runtime); 338 if (snd_pcm_format_unsigned(runtime->format) > 0) { 339 format = runtime->channels > 1 ? SB_DSP4_MODE_UNS_STEREO : SB_DSP4_MODE_UNS_MONO; 340 } else { 341 format = runtime->channels > 1 ? SB_DSP4_MODE_SIGN_STEREO : SB_DSP4_MODE_SIGN_MONO; 342 } 343 snd_sb16_setup_rate(chip, runtime->rate, SNDRV_PCM_STREAM_CAPTURE); 344 size = chip->c_dma_size = snd_pcm_lib_buffer_bytes(substream); 345 dma = (chip->mode & SB_MODE_CAPTURE_8) ? chip->dma8 : chip->dma16; 346 snd_dma_program(dma, runtime->dma_addr, size, DMA_MODE_READ | DMA_AUTOINIT); 347 348 count = snd_pcm_lib_period_bytes(substream); 349 spin_lock_irqsave(&chip->reg_lock, flags); 350 if (chip->mode & SB_MODE_CAPTURE_16) { 351 count >>= 1; 352 count--; 353 snd_sbdsp_command(chip, SB_DSP4_IN16_AI); 354 snd_sbdsp_command(chip, format); 355 snd_sbdsp_command(chip, count & 0xff); 356 snd_sbdsp_command(chip, count >> 8); 357 snd_sbdsp_command(chip, SB_DSP_DMA16_OFF); 358 } else { 359 count--; 360 snd_sbdsp_command(chip, SB_DSP4_IN8_AI); 361 snd_sbdsp_command(chip, format); 362 snd_sbdsp_command(chip, count & 0xff); 363 snd_sbdsp_command(chip, count >> 8); 364 snd_sbdsp_command(chip, SB_DSP_DMA8_OFF); 365 } 366 spin_unlock_irqrestore(&chip->reg_lock, flags); 367 return 0; 368 } 369 370 static int snd_sb16_capture_trigger(struct snd_pcm_substream *substream, 371 int cmd) 372 { 373 struct snd_sb *chip = snd_pcm_substream_chip(substream); 374 int result = 0; 375 376 spin_lock(&chip->reg_lock); 377 switch (cmd) { 378 case SNDRV_PCM_TRIGGER_START: 379 case SNDRV_PCM_TRIGGER_RESUME: 380 chip->mode |= SB_RATE_LOCK_CAPTURE; 381 snd_sbdsp_command(chip, chip->mode & SB_MODE_CAPTURE_16 ? SB_DSP_DMA16_ON : SB_DSP_DMA8_ON); 382 break; 383 case SNDRV_PCM_TRIGGER_STOP: 384 case SNDRV_PCM_TRIGGER_SUSPEND: 385 snd_sbdsp_command(chip, chip->mode & SB_MODE_CAPTURE_16 ? SB_DSP_DMA16_OFF : SB_DSP_DMA8_OFF); 386 /* next two lines are needed for some types of DSP4 (SB AWE 32 - 4.13) */ 387 if (chip->mode & SB_RATE_LOCK_PLAYBACK) 388 snd_sbdsp_command(chip, chip->mode & SB_MODE_PLAYBACK_16 ? SB_DSP_DMA16_ON : SB_DSP_DMA8_ON); 389 chip->mode &= ~SB_RATE_LOCK_CAPTURE; 390 break; 391 default: 392 result = -EINVAL; 393 } 394 spin_unlock(&chip->reg_lock); 395 return result; 396 } 397 398 irqreturn_t snd_sb16dsp_interrupt(int irq, void *dev_id) 399 { 400 struct snd_sb *chip = dev_id; 401 unsigned char status; 402 int ok; 403 404 spin_lock(&chip->mixer_lock); 405 status = snd_sbmixer_read(chip, SB_DSP4_IRQSTATUS); 406 spin_unlock(&chip->mixer_lock); 407 if ((status & SB_IRQTYPE_MPUIN) && chip->rmidi_callback) 408 chip->rmidi_callback(irq, chip->rmidi->private_data); 409 if (status & SB_IRQTYPE_8BIT) { 410 ok = 0; 411 if (chip->mode & SB_MODE_PLAYBACK_8) { 412 snd_pcm_period_elapsed(chip->playback_substream); 413 snd_sb16_csp_update(chip); 414 ok++; 415 } 416 if (chip->mode & SB_MODE_CAPTURE_8) { 417 snd_pcm_period_elapsed(chip->capture_substream); 418 ok++; 419 } 420 spin_lock(&chip->reg_lock); 421 if (!ok) 422 snd_sbdsp_command(chip, SB_DSP_DMA8_OFF); 423 snd_sb_ack_8bit(chip); 424 spin_unlock(&chip->reg_lock); 425 } 426 if (status & SB_IRQTYPE_16BIT) { 427 ok = 0; 428 if (chip->mode & SB_MODE_PLAYBACK_16) { 429 snd_pcm_period_elapsed(chip->playback_substream); 430 snd_sb16_csp_update(chip); 431 ok++; 432 } 433 if (chip->mode & SB_MODE_CAPTURE_16) { 434 snd_pcm_period_elapsed(chip->capture_substream); 435 ok++; 436 } 437 spin_lock(&chip->reg_lock); 438 if (!ok) 439 snd_sbdsp_command(chip, SB_DSP_DMA16_OFF); 440 snd_sb_ack_16bit(chip); 441 spin_unlock(&chip->reg_lock); 442 } 443 return IRQ_HANDLED; 444 } 445 446 /* 447 448 */ 449 450 static snd_pcm_uframes_t snd_sb16_playback_pointer(struct snd_pcm_substream *substream) 451 { 452 struct snd_sb *chip = snd_pcm_substream_chip(substream); 453 unsigned int dma; 454 size_t ptr; 455 456 dma = (chip->mode & SB_MODE_PLAYBACK_8) ? chip->dma8 : chip->dma16; 457 ptr = snd_dma_pointer(dma, chip->p_dma_size); 458 return bytes_to_frames(substream->runtime, ptr); 459 } 460 461 static snd_pcm_uframes_t snd_sb16_capture_pointer(struct snd_pcm_substream *substream) 462 { 463 struct snd_sb *chip = snd_pcm_substream_chip(substream); 464 unsigned int dma; 465 size_t ptr; 466 467 dma = (chip->mode & SB_MODE_CAPTURE_8) ? chip->dma8 : chip->dma16; 468 ptr = snd_dma_pointer(dma, chip->c_dma_size); 469 return bytes_to_frames(substream->runtime, ptr); 470 } 471 472 /* 473 474 */ 475 476 static const struct snd_pcm_hardware snd_sb16_playback = 477 { 478 .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED | 479 SNDRV_PCM_INFO_MMAP_VALID), 480 .formats = 0, 481 .rates = SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_44100, 482 .rate_min = 4000, 483 .rate_max = 44100, 484 .channels_min = 1, 485 .channels_max = 2, 486 .buffer_bytes_max = (128*1024), 487 .period_bytes_min = 64, 488 .period_bytes_max = (128*1024), 489 .periods_min = 1, 490 .periods_max = 1024, 491 .fifo_size = 0, 492 }; 493 494 static const struct snd_pcm_hardware snd_sb16_capture = 495 { 496 .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED | 497 SNDRV_PCM_INFO_MMAP_VALID), 498 .formats = 0, 499 .rates = SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_44100, 500 .rate_min = 4000, 501 .rate_max = 44100, 502 .channels_min = 1, 503 .channels_max = 2, 504 .buffer_bytes_max = (128*1024), 505 .period_bytes_min = 64, 506 .period_bytes_max = (128*1024), 507 .periods_min = 1, 508 .periods_max = 1024, 509 .fifo_size = 0, 510 }; 511 512 /* 513 * open/close 514 */ 515 516 static int snd_sb16_playback_open(struct snd_pcm_substream *substream) 517 { 518 unsigned long flags; 519 struct snd_sb *chip = snd_pcm_substream_chip(substream); 520 struct snd_pcm_runtime *runtime = substream->runtime; 521 522 spin_lock_irqsave(&chip->open_lock, flags); 523 if (chip->mode & SB_MODE_PLAYBACK) { 524 spin_unlock_irqrestore(&chip->open_lock, flags); 525 return -EAGAIN; 526 } 527 runtime->hw = snd_sb16_playback; 528 529 /* skip if 16 bit DMA was reserved for capture */ 530 if (chip->force_mode16 & SB_MODE_CAPTURE_16) 531 goto __skip_16bit; 532 533 if (chip->dma16 >= 0 && !(chip->mode & SB_MODE_CAPTURE_16)) { 534 chip->mode |= SB_MODE_PLAYBACK_16; 535 runtime->hw.formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE; 536 /* Vibra16X hack */ 537 if (chip->dma16 <= 3) { 538 runtime->hw.buffer_bytes_max = 539 runtime->hw.period_bytes_max = 64 * 1024; 540 } else { 541 snd_sb16_csp_playback_open(chip, runtime); 542 } 543 goto __open_ok; 544 } 545 546 __skip_16bit: 547 if (chip->dma8 >= 0 && !(chip->mode & SB_MODE_CAPTURE_8)) { 548 chip->mode |= SB_MODE_PLAYBACK_8; 549 /* DSP v 4.xx can transfer 16bit data through 8bit DMA channel, SBHWPG 2-7 */ 550 if (chip->dma16 < 0) { 551 runtime->hw.formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE; 552 chip->mode |= SB_MODE_PLAYBACK_16; 553 } else { 554 runtime->hw.formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S8; 555 } 556 runtime->hw.buffer_bytes_max = 557 runtime->hw.period_bytes_max = 64 * 1024; 558 goto __open_ok; 559 } 560 spin_unlock_irqrestore(&chip->open_lock, flags); 561 return -EAGAIN; 562 563 __open_ok: 564 if (chip->hardware == SB_HW_ALS100) 565 runtime->hw.rate_max = 48000; 566 if (chip->hardware == SB_HW_CS5530) { 567 runtime->hw.buffer_bytes_max = 32 * 1024; 568 runtime->hw.periods_min = 2; 569 runtime->hw.rate_min = 44100; 570 } 571 if (chip->mode & SB_RATE_LOCK) 572 runtime->hw.rate_min = runtime->hw.rate_max = chip->locked_rate; 573 chip->playback_substream = substream; 574 spin_unlock_irqrestore(&chip->open_lock, flags); 575 return 0; 576 } 577 578 static int snd_sb16_playback_close(struct snd_pcm_substream *substream) 579 { 580 unsigned long flags; 581 struct snd_sb *chip = snd_pcm_substream_chip(substream); 582 583 snd_sb16_csp_playback_close(chip); 584 spin_lock_irqsave(&chip->open_lock, flags); 585 chip->playback_substream = NULL; 586 chip->mode &= ~SB_MODE_PLAYBACK; 587 spin_unlock_irqrestore(&chip->open_lock, flags); 588 return 0; 589 } 590 591 static int snd_sb16_capture_open(struct snd_pcm_substream *substream) 592 { 593 unsigned long flags; 594 struct snd_sb *chip = snd_pcm_substream_chip(substream); 595 struct snd_pcm_runtime *runtime = substream->runtime; 596 597 spin_lock_irqsave(&chip->open_lock, flags); 598 if (chip->mode & SB_MODE_CAPTURE) { 599 spin_unlock_irqrestore(&chip->open_lock, flags); 600 return -EAGAIN; 601 } 602 runtime->hw = snd_sb16_capture; 603 604 /* skip if 16 bit DMA was reserved for playback */ 605 if (chip->force_mode16 & SB_MODE_PLAYBACK_16) 606 goto __skip_16bit; 607 608 if (chip->dma16 >= 0 && !(chip->mode & SB_MODE_PLAYBACK_16)) { 609 chip->mode |= SB_MODE_CAPTURE_16; 610 runtime->hw.formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE; 611 /* Vibra16X hack */ 612 if (chip->dma16 <= 3) { 613 runtime->hw.buffer_bytes_max = 614 runtime->hw.period_bytes_max = 64 * 1024; 615 } else { 616 snd_sb16_csp_capture_open(chip, runtime); 617 } 618 goto __open_ok; 619 } 620 621 __skip_16bit: 622 if (chip->dma8 >= 0 && !(chip->mode & SB_MODE_PLAYBACK_8)) { 623 chip->mode |= SB_MODE_CAPTURE_8; 624 /* DSP v 4.xx can transfer 16bit data through 8bit DMA channel, SBHWPG 2-7 */ 625 if (chip->dma16 < 0) { 626 runtime->hw.formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE; 627 chip->mode |= SB_MODE_CAPTURE_16; 628 } else { 629 runtime->hw.formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S8; 630 } 631 runtime->hw.buffer_bytes_max = 632 runtime->hw.period_bytes_max = 64 * 1024; 633 goto __open_ok; 634 } 635 spin_unlock_irqrestore(&chip->open_lock, flags); 636 return -EAGAIN; 637 638 __open_ok: 639 if (chip->hardware == SB_HW_ALS100) 640 runtime->hw.rate_max = 48000; 641 if (chip->hardware == SB_HW_CS5530) { 642 runtime->hw.buffer_bytes_max = 32 * 1024; 643 runtime->hw.periods_min = 2; 644 runtime->hw.rate_min = 44100; 645 } 646 if (chip->mode & SB_RATE_LOCK) 647 runtime->hw.rate_min = runtime->hw.rate_max = chip->locked_rate; 648 chip->capture_substream = substream; 649 spin_unlock_irqrestore(&chip->open_lock, flags); 650 return 0; 651 } 652 653 static int snd_sb16_capture_close(struct snd_pcm_substream *substream) 654 { 655 unsigned long flags; 656 struct snd_sb *chip = snd_pcm_substream_chip(substream); 657 658 snd_sb16_csp_capture_close(chip); 659 spin_lock_irqsave(&chip->open_lock, flags); 660 chip->capture_substream = NULL; 661 chip->mode &= ~SB_MODE_CAPTURE; 662 spin_unlock_irqrestore(&chip->open_lock, flags); 663 return 0; 664 } 665 666 /* 667 * DMA control interface 668 */ 669 670 static int snd_sb16_set_dma_mode(struct snd_sb *chip, int what) 671 { 672 if (chip->dma8 < 0 || chip->dma16 < 0) { 673 if (snd_BUG_ON(what)) 674 return -EINVAL; 675 return 0; 676 } 677 if (what == 0) { 678 chip->force_mode16 = 0; 679 } else if (what == 1) { 680 chip->force_mode16 = SB_MODE_PLAYBACK_16; 681 } else if (what == 2) { 682 chip->force_mode16 = SB_MODE_CAPTURE_16; 683 } else { 684 return -EINVAL; 685 } 686 return 0; 687 } 688 689 static int snd_sb16_get_dma_mode(struct snd_sb *chip) 690 { 691 if (chip->dma8 < 0 || chip->dma16 < 0) 692 return 0; 693 switch (chip->force_mode16) { 694 case SB_MODE_PLAYBACK_16: 695 return 1; 696 case SB_MODE_CAPTURE_16: 697 return 2; 698 default: 699 return 0; 700 } 701 } 702 703 static int snd_sb16_dma_control_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo) 704 { 705 static const char * const texts[3] = { 706 "Auto", "Playback", "Capture" 707 }; 708 709 return snd_ctl_enum_info(uinfo, 1, 3, texts); 710 } 711 712 static int snd_sb16_dma_control_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) 713 { 714 struct snd_sb *chip = snd_kcontrol_chip(kcontrol); 715 unsigned long flags; 716 717 spin_lock_irqsave(&chip->reg_lock, flags); 718 ucontrol->value.enumerated.item[0] = snd_sb16_get_dma_mode(chip); 719 spin_unlock_irqrestore(&chip->reg_lock, flags); 720 return 0; 721 } 722 723 static int snd_sb16_dma_control_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) 724 { 725 struct snd_sb *chip = snd_kcontrol_chip(kcontrol); 726 unsigned long flags; 727 unsigned char nval, oval; 728 int change; 729 730 if ((nval = ucontrol->value.enumerated.item[0]) > 2) 731 return -EINVAL; 732 spin_lock_irqsave(&chip->reg_lock, flags); 733 oval = snd_sb16_get_dma_mode(chip); 734 change = nval != oval; 735 snd_sb16_set_dma_mode(chip, nval); 736 spin_unlock_irqrestore(&chip->reg_lock, flags); 737 return change; 738 } 739 740 static const struct snd_kcontrol_new snd_sb16_dma_control = { 741 .iface = SNDRV_CTL_ELEM_IFACE_CARD, 742 .name = "16-bit DMA Allocation", 743 .info = snd_sb16_dma_control_info, 744 .get = snd_sb16_dma_control_get, 745 .put = snd_sb16_dma_control_put 746 }; 747 748 /* 749 * Initialization part 750 */ 751 752 int snd_sb16dsp_configure(struct snd_sb * chip) 753 { 754 unsigned long flags; 755 unsigned char irqreg = 0, dmareg = 0, mpureg; 756 unsigned char realirq, realdma, realmpureg; 757 /* note: mpu register should be present only on SB16 Vibra soundcards */ 758 759 // printk(KERN_DEBUG "codec->irq=%i, codec->dma8=%i, codec->dma16=%i\n", chip->irq, chip->dma8, chip->dma16); 760 spin_lock_irqsave(&chip->mixer_lock, flags); 761 mpureg = snd_sbmixer_read(chip, SB_DSP4_MPUSETUP) & ~0x06; 762 spin_unlock_irqrestore(&chip->mixer_lock, flags); 763 switch (chip->irq) { 764 case 2: 765 case 9: 766 irqreg |= SB_IRQSETUP_IRQ9; 767 break; 768 case 5: 769 irqreg |= SB_IRQSETUP_IRQ5; 770 break; 771 case 7: 772 irqreg |= SB_IRQSETUP_IRQ7; 773 break; 774 case 10: 775 irqreg |= SB_IRQSETUP_IRQ10; 776 break; 777 default: 778 return -EINVAL; 779 } 780 if (chip->dma8 >= 0) { 781 switch (chip->dma8) { 782 case 0: 783 dmareg |= SB_DMASETUP_DMA0; 784 break; 785 case 1: 786 dmareg |= SB_DMASETUP_DMA1; 787 break; 788 case 3: 789 dmareg |= SB_DMASETUP_DMA3; 790 break; 791 default: 792 return -EINVAL; 793 } 794 } 795 if (chip->dma16 >= 0 && chip->dma16 != chip->dma8) { 796 switch (chip->dma16) { 797 case 5: 798 dmareg |= SB_DMASETUP_DMA5; 799 break; 800 case 6: 801 dmareg |= SB_DMASETUP_DMA6; 802 break; 803 case 7: 804 dmareg |= SB_DMASETUP_DMA7; 805 break; 806 default: 807 return -EINVAL; 808 } 809 } 810 switch (chip->mpu_port) { 811 case 0x300: 812 mpureg |= 0x04; 813 break; 814 case 0x330: 815 mpureg |= 0x00; 816 break; 817 default: 818 mpureg |= 0x02; /* disable MPU */ 819 } 820 spin_lock_irqsave(&chip->mixer_lock, flags); 821 822 snd_sbmixer_write(chip, SB_DSP4_IRQSETUP, irqreg); 823 realirq = snd_sbmixer_read(chip, SB_DSP4_IRQSETUP); 824 825 snd_sbmixer_write(chip, SB_DSP4_DMASETUP, dmareg); 826 realdma = snd_sbmixer_read(chip, SB_DSP4_DMASETUP); 827 828 snd_sbmixer_write(chip, SB_DSP4_MPUSETUP, mpureg); 829 realmpureg = snd_sbmixer_read(chip, SB_DSP4_MPUSETUP); 830 831 spin_unlock_irqrestore(&chip->mixer_lock, flags); 832 if ((~realirq) & irqreg || (~realdma) & dmareg) { 833 snd_printk(KERN_ERR "SB16 [0x%lx]: unable to set DMA & IRQ (PnP device?)\n", chip->port); 834 snd_printk(KERN_ERR "SB16 [0x%lx]: wanted: irqreg=0x%x, dmareg=0x%x, mpureg = 0x%x\n", chip->port, realirq, realdma, realmpureg); 835 snd_printk(KERN_ERR "SB16 [0x%lx]: got: irqreg=0x%x, dmareg=0x%x, mpureg = 0x%x\n", chip->port, irqreg, dmareg, mpureg); 836 return -ENODEV; 837 } 838 return 0; 839 } 840 841 static const struct snd_pcm_ops snd_sb16_playback_ops = { 842 .open = snd_sb16_playback_open, 843 .close = snd_sb16_playback_close, 844 .ioctl = snd_pcm_lib_ioctl, 845 .hw_params = snd_sb16_hw_params, 846 .hw_free = snd_sb16_hw_free, 847 .prepare = snd_sb16_playback_prepare, 848 .trigger = snd_sb16_playback_trigger, 849 .pointer = snd_sb16_playback_pointer, 850 }; 851 852 static const struct snd_pcm_ops snd_sb16_capture_ops = { 853 .open = snd_sb16_capture_open, 854 .close = snd_sb16_capture_close, 855 .ioctl = snd_pcm_lib_ioctl, 856 .hw_params = snd_sb16_hw_params, 857 .hw_free = snd_sb16_hw_free, 858 .prepare = snd_sb16_capture_prepare, 859 .trigger = snd_sb16_capture_trigger, 860 .pointer = snd_sb16_capture_pointer, 861 }; 862 863 int snd_sb16dsp_pcm(struct snd_sb *chip, int device) 864 { 865 struct snd_card *card = chip->card; 866 struct snd_pcm *pcm; 867 int err; 868 869 if ((err = snd_pcm_new(card, "SB16 DSP", device, 1, 1, &pcm)) < 0) 870 return err; 871 sprintf(pcm->name, "DSP v%i.%i", chip->version >> 8, chip->version & 0xff); 872 pcm->info_flags = SNDRV_PCM_INFO_JOINT_DUPLEX; 873 pcm->private_data = chip; 874 chip->pcm = pcm; 875 876 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_sb16_playback_ops); 877 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_sb16_capture_ops); 878 879 if (chip->dma16 >= 0 && chip->dma8 != chip->dma16) 880 snd_ctl_add(card, snd_ctl_new1(&snd_sb16_dma_control, chip)); 881 else 882 pcm->info_flags = SNDRV_PCM_INFO_HALF_DUPLEX; 883 884 snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV, 885 snd_dma_isa_data(), 886 64*1024, 128*1024); 887 return 0; 888 } 889 890 const struct snd_pcm_ops *snd_sb16dsp_get_pcm_ops(int direction) 891 { 892 return direction == SNDRV_PCM_STREAM_PLAYBACK ? 893 &snd_sb16_playback_ops : &snd_sb16_capture_ops; 894 } 895 896 EXPORT_SYMBOL(snd_sb16dsp_pcm); 897 EXPORT_SYMBOL(snd_sb16dsp_get_pcm_ops); 898 EXPORT_SYMBOL(snd_sb16dsp_configure); 899 EXPORT_SYMBOL(snd_sb16dsp_interrupt); 900 901 /* 902 * INIT part 903 */ 904 905 static int __init alsa_sb16_init(void) 906 { 907 return 0; 908 } 909 910 static void __exit alsa_sb16_exit(void) 911 { 912 } 913 914 module_init(alsa_sb16_init) 915 module_exit(alsa_sb16_exit) 916