1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * Copyright (c) by Jaroslav Kysela <perex@perex.cz> 4 * Routines for control of 16-bit SoundBlaster cards and clones 5 * Note: This is very ugly hardware which uses one 8-bit DMA channel and 6 * second 16-bit DMA channel. Unfortunately 8-bit DMA channel can't 7 * transfer 16-bit samples and 16-bit DMA channels can't transfer 8 * 8-bit samples. This make full duplex more complicated than 9 * can be... People, don't buy these soundcards for full 16-bit 10 * duplex!!! 11 * Note: 16-bit wide is assigned to first direction which made request. 12 * With full duplex - playback is preferred with abstract layer. 13 * 14 * Note: Some chip revisions have hardware bug. Changing capture 15 * channel from full-duplex 8bit DMA to 16bit DMA will block 16 * 16bit DMA transfers from DSP chip (capture) until 8bit transfer 17 * to DSP chip (playback) starts. This bug can be avoided with 18 * "16bit DMA Allocation" setting set to Playback or Capture. 19 */ 20 21 #include <linux/io.h> 22 #include <asm/dma.h> 23 #include <linux/init.h> 24 #include <linux/time.h> 25 #include <linux/module.h> 26 #include <sound/core.h> 27 #include <sound/sb.h> 28 #include <sound/sb16_csp.h> 29 #include <sound/mpu401.h> 30 #include <sound/control.h> 31 #include <sound/info.h> 32 33 MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>"); 34 MODULE_DESCRIPTION("Routines for control of 16-bit SoundBlaster cards and clones"); 35 MODULE_LICENSE("GPL"); 36 37 #define runtime_format_bits(runtime) \ 38 ((unsigned int)pcm_format_to_bits((runtime)->format)) 39 40 #ifdef CONFIG_SND_SB16_CSP snd_sb16_csp_playback_prepare(struct snd_sb * chip,struct snd_pcm_runtime * runtime)41 static void snd_sb16_csp_playback_prepare(struct snd_sb *chip, struct snd_pcm_runtime *runtime) 42 { 43 if (chip->hardware == SB_HW_16CSP) { 44 struct snd_sb_csp *csp = chip->csp; 45 46 if (csp->running & SNDRV_SB_CSP_ST_LOADED) { 47 /* manually loaded codec */ 48 if ((csp->mode & SNDRV_SB_CSP_MODE_DSP_WRITE) && 49 (runtime_format_bits(runtime) == csp->acc_format)) { 50 /* Supported runtime PCM format for playback */ 51 if (csp->ops.csp_use(csp) == 0) { 52 /* If CSP was successfully acquired */ 53 goto __start_CSP; 54 } 55 } else if ((csp->mode & SNDRV_SB_CSP_MODE_QSOUND) && (csp->q_enabled)) { 56 /* QSound decoder is loaded and enabled */ 57 if (runtime_format_bits(runtime) & (SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U8 | 58 SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE)) { 59 /* Only for simple PCM formats */ 60 if (csp->ops.csp_use(csp) == 0) { 61 /* If CSP was successfully acquired */ 62 goto __start_CSP; 63 } 64 } 65 } 66 } else if (csp->ops.csp_use(csp) == 0) { 67 /* Acquire CSP and try to autoload hardware codec */ 68 if (csp->ops.csp_autoload(csp, runtime->format, SNDRV_SB_CSP_MODE_DSP_WRITE)) { 69 /* Unsupported format, release CSP */ 70 csp->ops.csp_unuse(csp); 71 } else { 72 __start_CSP: 73 /* Try to start CSP */ 74 if (csp->ops.csp_start(csp, (chip->mode & SB_MODE_PLAYBACK_16) ? 75 SNDRV_SB_CSP_SAMPLE_16BIT : SNDRV_SB_CSP_SAMPLE_8BIT, 76 (runtime->channels > 1) ? 77 SNDRV_SB_CSP_STEREO : SNDRV_SB_CSP_MONO)) { 78 /* Failed, release CSP */ 79 csp->ops.csp_unuse(csp); 80 } else { 81 /* Success, CSP acquired and running */ 82 chip->open = SNDRV_SB_CSP_MODE_DSP_WRITE; 83 } 84 } 85 } 86 } 87 } 88 snd_sb16_csp_capture_prepare(struct snd_sb * chip,struct snd_pcm_runtime * runtime)89 static void snd_sb16_csp_capture_prepare(struct snd_sb *chip, struct snd_pcm_runtime *runtime) 90 { 91 if (chip->hardware == SB_HW_16CSP) { 92 struct snd_sb_csp *csp = chip->csp; 93 94 if (csp->running & SNDRV_SB_CSP_ST_LOADED) { 95 /* manually loaded codec */ 96 if ((csp->mode & SNDRV_SB_CSP_MODE_DSP_READ) && 97 (runtime_format_bits(runtime) == csp->acc_format)) { 98 /* Supported runtime PCM format for capture */ 99 if (csp->ops.csp_use(csp) == 0) { 100 /* If CSP was successfully acquired */ 101 goto __start_CSP; 102 } 103 } 104 } else if (csp->ops.csp_use(csp) == 0) { 105 /* Acquire CSP and try to autoload hardware codec */ 106 if (csp->ops.csp_autoload(csp, runtime->format, SNDRV_SB_CSP_MODE_DSP_READ)) { 107 /* Unsupported format, release CSP */ 108 csp->ops.csp_unuse(csp); 109 } else { 110 __start_CSP: 111 /* Try to start CSP */ 112 if (csp->ops.csp_start(csp, (chip->mode & SB_MODE_CAPTURE_16) ? 113 SNDRV_SB_CSP_SAMPLE_16BIT : SNDRV_SB_CSP_SAMPLE_8BIT, 114 (runtime->channels > 1) ? 115 SNDRV_SB_CSP_STEREO : SNDRV_SB_CSP_MONO)) { 116 /* Failed, release CSP */ 117 csp->ops.csp_unuse(csp); 118 } else { 119 /* Success, CSP acquired and running */ 120 chip->open = SNDRV_SB_CSP_MODE_DSP_READ; 121 } 122 } 123 } 124 } 125 } 126 snd_sb16_csp_update(struct snd_sb * chip)127 static void snd_sb16_csp_update(struct snd_sb *chip) 128 { 129 if (chip->hardware == SB_HW_16CSP) { 130 struct snd_sb_csp *csp = chip->csp; 131 132 if (csp->qpos_changed) { 133 spin_lock(&chip->reg_lock); 134 csp->ops.csp_qsound_transfer (csp); 135 spin_unlock(&chip->reg_lock); 136 } 137 } 138 } 139 snd_sb16_csp_playback_open(struct snd_sb * chip,struct snd_pcm_runtime * runtime)140 static void snd_sb16_csp_playback_open(struct snd_sb *chip, struct snd_pcm_runtime *runtime) 141 { 142 /* CSP decoders (QSound excluded) support only 16bit transfers */ 143 if (chip->hardware == SB_HW_16CSP) { 144 struct snd_sb_csp *csp = chip->csp; 145 146 if (csp->running & SNDRV_SB_CSP_ST_LOADED) { 147 /* manually loaded codec */ 148 if (csp->mode & SNDRV_SB_CSP_MODE_DSP_WRITE) { 149 runtime->hw.formats |= csp->acc_format; 150 } 151 } else { 152 /* autoloaded codecs */ 153 runtime->hw.formats |= SNDRV_PCM_FMTBIT_MU_LAW | SNDRV_PCM_FMTBIT_A_LAW | 154 SNDRV_PCM_FMTBIT_IMA_ADPCM; 155 } 156 } 157 } 158 snd_sb16_csp_playback_close(struct snd_sb * chip)159 static void snd_sb16_csp_playback_close(struct snd_sb *chip) 160 { 161 if ((chip->hardware == SB_HW_16CSP) && (chip->open == SNDRV_SB_CSP_MODE_DSP_WRITE)) { 162 struct snd_sb_csp *csp = chip->csp; 163 164 if (csp->ops.csp_stop(csp) == 0) { 165 csp->ops.csp_unuse(csp); 166 chip->open = 0; 167 } 168 } 169 } 170 snd_sb16_csp_capture_open(struct snd_sb * chip,struct snd_pcm_runtime * runtime)171 static void snd_sb16_csp_capture_open(struct snd_sb *chip, struct snd_pcm_runtime *runtime) 172 { 173 /* CSP coders support only 16bit transfers */ 174 if (chip->hardware == SB_HW_16CSP) { 175 struct snd_sb_csp *csp = chip->csp; 176 177 if (csp->running & SNDRV_SB_CSP_ST_LOADED) { 178 /* manually loaded codec */ 179 if (csp->mode & SNDRV_SB_CSP_MODE_DSP_READ) { 180 runtime->hw.formats |= csp->acc_format; 181 } 182 } else { 183 /* autoloaded codecs */ 184 runtime->hw.formats |= SNDRV_PCM_FMTBIT_MU_LAW | SNDRV_PCM_FMTBIT_A_LAW | 185 SNDRV_PCM_FMTBIT_IMA_ADPCM; 186 } 187 } 188 } 189 snd_sb16_csp_capture_close(struct snd_sb * chip)190 static void snd_sb16_csp_capture_close(struct snd_sb *chip) 191 { 192 if ((chip->hardware == SB_HW_16CSP) && (chip->open == SNDRV_SB_CSP_MODE_DSP_READ)) { 193 struct snd_sb_csp *csp = chip->csp; 194 195 if (csp->ops.csp_stop(csp) == 0) { 196 csp->ops.csp_unuse(csp); 197 chip->open = 0; 198 } 199 } 200 } 201 #else 202 #define snd_sb16_csp_playback_prepare(chip, runtime) /*nop*/ 203 #define snd_sb16_csp_capture_prepare(chip, runtime) /*nop*/ 204 #define snd_sb16_csp_update(chip) /*nop*/ 205 #define snd_sb16_csp_playback_open(chip, runtime) /*nop*/ 206 #define snd_sb16_csp_playback_close(chip) /*nop*/ 207 #define snd_sb16_csp_capture_open(chip, runtime) /*nop*/ 208 #define snd_sb16_csp_capture_close(chip) /*nop*/ 209 #endif 210 211 snd_sb16_setup_rate(struct snd_sb * chip,unsigned short rate,int channel)212 static void snd_sb16_setup_rate(struct snd_sb *chip, 213 unsigned short rate, 214 int channel) 215 { 216 unsigned long flags; 217 218 spin_lock_irqsave(&chip->reg_lock, flags); 219 if (chip->mode & (channel == SNDRV_PCM_STREAM_PLAYBACK ? SB_MODE_PLAYBACK_16 : SB_MODE_CAPTURE_16)) 220 snd_sb_ack_16bit(chip); 221 else 222 snd_sb_ack_8bit(chip); 223 if (!(chip->mode & SB_RATE_LOCK)) { 224 chip->locked_rate = rate; 225 snd_sbdsp_command(chip, SB_DSP_SAMPLE_RATE_IN); 226 snd_sbdsp_command(chip, rate >> 8); 227 snd_sbdsp_command(chip, rate & 0xff); 228 snd_sbdsp_command(chip, SB_DSP_SAMPLE_RATE_OUT); 229 snd_sbdsp_command(chip, rate >> 8); 230 snd_sbdsp_command(chip, rate & 0xff); 231 } 232 spin_unlock_irqrestore(&chip->reg_lock, flags); 233 } 234 snd_sb16_playback_prepare(struct snd_pcm_substream * substream)235 static int snd_sb16_playback_prepare(struct snd_pcm_substream *substream) 236 { 237 unsigned long flags; 238 struct snd_sb *chip = snd_pcm_substream_chip(substream); 239 struct snd_pcm_runtime *runtime = substream->runtime; 240 unsigned char format; 241 unsigned int size, count, dma; 242 243 snd_sb16_csp_playback_prepare(chip, runtime); 244 if (snd_pcm_format_unsigned(runtime->format) > 0) { 245 format = runtime->channels > 1 ? SB_DSP4_MODE_UNS_STEREO : SB_DSP4_MODE_UNS_MONO; 246 } else { 247 format = runtime->channels > 1 ? SB_DSP4_MODE_SIGN_STEREO : SB_DSP4_MODE_SIGN_MONO; 248 } 249 250 snd_sb16_setup_rate(chip, runtime->rate, SNDRV_PCM_STREAM_PLAYBACK); 251 size = chip->p_dma_size = snd_pcm_lib_buffer_bytes(substream); 252 dma = (chip->mode & SB_MODE_PLAYBACK_8) ? chip->dma8 : chip->dma16; 253 snd_dma_program(dma, runtime->dma_addr, size, DMA_MODE_WRITE | DMA_AUTOINIT); 254 255 count = snd_pcm_lib_period_bytes(substream); 256 spin_lock_irqsave(&chip->reg_lock, flags); 257 if (chip->mode & SB_MODE_PLAYBACK_16) { 258 count >>= 1; 259 count--; 260 snd_sbdsp_command(chip, SB_DSP4_OUT16_AI); 261 snd_sbdsp_command(chip, format); 262 snd_sbdsp_command(chip, count & 0xff); 263 snd_sbdsp_command(chip, count >> 8); 264 snd_sbdsp_command(chip, SB_DSP_DMA16_OFF); 265 } else { 266 count--; 267 snd_sbdsp_command(chip, SB_DSP4_OUT8_AI); 268 snd_sbdsp_command(chip, format); 269 snd_sbdsp_command(chip, count & 0xff); 270 snd_sbdsp_command(chip, count >> 8); 271 snd_sbdsp_command(chip, SB_DSP_DMA8_OFF); 272 } 273 spin_unlock_irqrestore(&chip->reg_lock, flags); 274 return 0; 275 } 276 snd_sb16_playback_trigger(struct snd_pcm_substream * substream,int cmd)277 static int snd_sb16_playback_trigger(struct snd_pcm_substream *substream, 278 int cmd) 279 { 280 struct snd_sb *chip = snd_pcm_substream_chip(substream); 281 int result = 0; 282 283 spin_lock(&chip->reg_lock); 284 switch (cmd) { 285 case SNDRV_PCM_TRIGGER_START: 286 case SNDRV_PCM_TRIGGER_RESUME: 287 chip->mode |= SB_RATE_LOCK_PLAYBACK; 288 snd_sbdsp_command(chip, chip->mode & SB_MODE_PLAYBACK_16 ? SB_DSP_DMA16_ON : SB_DSP_DMA8_ON); 289 break; 290 case SNDRV_PCM_TRIGGER_STOP: 291 case SNDRV_PCM_TRIGGER_SUSPEND: 292 snd_sbdsp_command(chip, chip->mode & SB_MODE_PLAYBACK_16 ? SB_DSP_DMA16_OFF : SB_DSP_DMA8_OFF); 293 /* next two lines are needed for some types of DSP4 (SB AWE 32 - 4.13) */ 294 if (chip->mode & SB_RATE_LOCK_CAPTURE) 295 snd_sbdsp_command(chip, chip->mode & SB_MODE_CAPTURE_16 ? SB_DSP_DMA16_ON : SB_DSP_DMA8_ON); 296 chip->mode &= ~SB_RATE_LOCK_PLAYBACK; 297 break; 298 default: 299 result = -EINVAL; 300 } 301 spin_unlock(&chip->reg_lock); 302 return result; 303 } 304 snd_sb16_capture_prepare(struct snd_pcm_substream * substream)305 static int snd_sb16_capture_prepare(struct snd_pcm_substream *substream) 306 { 307 unsigned long flags; 308 struct snd_sb *chip = snd_pcm_substream_chip(substream); 309 struct snd_pcm_runtime *runtime = substream->runtime; 310 unsigned char format; 311 unsigned int size, count, dma; 312 313 snd_sb16_csp_capture_prepare(chip, runtime); 314 if (snd_pcm_format_unsigned(runtime->format) > 0) { 315 format = runtime->channels > 1 ? SB_DSP4_MODE_UNS_STEREO : SB_DSP4_MODE_UNS_MONO; 316 } else { 317 format = runtime->channels > 1 ? SB_DSP4_MODE_SIGN_STEREO : SB_DSP4_MODE_SIGN_MONO; 318 } 319 snd_sb16_setup_rate(chip, runtime->rate, SNDRV_PCM_STREAM_CAPTURE); 320 size = chip->c_dma_size = snd_pcm_lib_buffer_bytes(substream); 321 dma = (chip->mode & SB_MODE_CAPTURE_8) ? chip->dma8 : chip->dma16; 322 snd_dma_program(dma, runtime->dma_addr, size, DMA_MODE_READ | DMA_AUTOINIT); 323 324 count = snd_pcm_lib_period_bytes(substream); 325 spin_lock_irqsave(&chip->reg_lock, flags); 326 if (chip->mode & SB_MODE_CAPTURE_16) { 327 count >>= 1; 328 count--; 329 snd_sbdsp_command(chip, SB_DSP4_IN16_AI); 330 snd_sbdsp_command(chip, format); 331 snd_sbdsp_command(chip, count & 0xff); 332 snd_sbdsp_command(chip, count >> 8); 333 snd_sbdsp_command(chip, SB_DSP_DMA16_OFF); 334 } else { 335 count--; 336 snd_sbdsp_command(chip, SB_DSP4_IN8_AI); 337 snd_sbdsp_command(chip, format); 338 snd_sbdsp_command(chip, count & 0xff); 339 snd_sbdsp_command(chip, count >> 8); 340 snd_sbdsp_command(chip, SB_DSP_DMA8_OFF); 341 } 342 spin_unlock_irqrestore(&chip->reg_lock, flags); 343 return 0; 344 } 345 snd_sb16_capture_trigger(struct snd_pcm_substream * substream,int cmd)346 static int snd_sb16_capture_trigger(struct snd_pcm_substream *substream, 347 int cmd) 348 { 349 struct snd_sb *chip = snd_pcm_substream_chip(substream); 350 int result = 0; 351 352 spin_lock(&chip->reg_lock); 353 switch (cmd) { 354 case SNDRV_PCM_TRIGGER_START: 355 case SNDRV_PCM_TRIGGER_RESUME: 356 chip->mode |= SB_RATE_LOCK_CAPTURE; 357 snd_sbdsp_command(chip, chip->mode & SB_MODE_CAPTURE_16 ? SB_DSP_DMA16_ON : SB_DSP_DMA8_ON); 358 break; 359 case SNDRV_PCM_TRIGGER_STOP: 360 case SNDRV_PCM_TRIGGER_SUSPEND: 361 snd_sbdsp_command(chip, chip->mode & SB_MODE_CAPTURE_16 ? SB_DSP_DMA16_OFF : SB_DSP_DMA8_OFF); 362 /* next two lines are needed for some types of DSP4 (SB AWE 32 - 4.13) */ 363 if (chip->mode & SB_RATE_LOCK_PLAYBACK) 364 snd_sbdsp_command(chip, chip->mode & SB_MODE_PLAYBACK_16 ? SB_DSP_DMA16_ON : SB_DSP_DMA8_ON); 365 chip->mode &= ~SB_RATE_LOCK_CAPTURE; 366 break; 367 default: 368 result = -EINVAL; 369 } 370 spin_unlock(&chip->reg_lock); 371 return result; 372 } 373 snd_sb16dsp_interrupt(int irq,void * dev_id)374 irqreturn_t snd_sb16dsp_interrupt(int irq, void *dev_id) 375 { 376 struct snd_sb *chip = dev_id; 377 unsigned char status; 378 int ok; 379 380 spin_lock(&chip->mixer_lock); 381 status = snd_sbmixer_read(chip, SB_DSP4_IRQSTATUS); 382 spin_unlock(&chip->mixer_lock); 383 if ((status & SB_IRQTYPE_MPUIN) && chip->rmidi_callback) 384 chip->rmidi_callback(irq, chip->rmidi->private_data); 385 if (status & SB_IRQTYPE_8BIT) { 386 ok = 0; 387 if (chip->mode & SB_MODE_PLAYBACK_8) { 388 snd_pcm_period_elapsed(chip->playback_substream); 389 snd_sb16_csp_update(chip); 390 ok++; 391 } 392 if (chip->mode & SB_MODE_CAPTURE_8) { 393 snd_pcm_period_elapsed(chip->capture_substream); 394 ok++; 395 } 396 spin_lock(&chip->reg_lock); 397 if (!ok) 398 snd_sbdsp_command(chip, SB_DSP_DMA8_OFF); 399 snd_sb_ack_8bit(chip); 400 spin_unlock(&chip->reg_lock); 401 } 402 if (status & SB_IRQTYPE_16BIT) { 403 ok = 0; 404 if (chip->mode & SB_MODE_PLAYBACK_16) { 405 snd_pcm_period_elapsed(chip->playback_substream); 406 snd_sb16_csp_update(chip); 407 ok++; 408 } 409 if (chip->mode & SB_MODE_CAPTURE_16) { 410 snd_pcm_period_elapsed(chip->capture_substream); 411 ok++; 412 } 413 spin_lock(&chip->reg_lock); 414 if (!ok) 415 snd_sbdsp_command(chip, SB_DSP_DMA16_OFF); 416 snd_sb_ack_16bit(chip); 417 spin_unlock(&chip->reg_lock); 418 } 419 return IRQ_HANDLED; 420 } 421 422 /* 423 424 */ 425 snd_sb16_playback_pointer(struct snd_pcm_substream * substream)426 static snd_pcm_uframes_t snd_sb16_playback_pointer(struct snd_pcm_substream *substream) 427 { 428 struct snd_sb *chip = snd_pcm_substream_chip(substream); 429 unsigned int dma; 430 size_t ptr; 431 432 dma = (chip->mode & SB_MODE_PLAYBACK_8) ? chip->dma8 : chip->dma16; 433 ptr = snd_dma_pointer(dma, chip->p_dma_size); 434 return bytes_to_frames(substream->runtime, ptr); 435 } 436 snd_sb16_capture_pointer(struct snd_pcm_substream * substream)437 static snd_pcm_uframes_t snd_sb16_capture_pointer(struct snd_pcm_substream *substream) 438 { 439 struct snd_sb *chip = snd_pcm_substream_chip(substream); 440 unsigned int dma; 441 size_t ptr; 442 443 dma = (chip->mode & SB_MODE_CAPTURE_8) ? chip->dma8 : chip->dma16; 444 ptr = snd_dma_pointer(dma, chip->c_dma_size); 445 return bytes_to_frames(substream->runtime, ptr); 446 } 447 448 /* 449 450 */ 451 452 static const struct snd_pcm_hardware snd_sb16_playback = 453 { 454 .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED | 455 SNDRV_PCM_INFO_MMAP_VALID), 456 .formats = 0, 457 .rates = SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_44100, 458 .rate_min = 4000, 459 .rate_max = 44100, 460 .channels_min = 1, 461 .channels_max = 2, 462 .buffer_bytes_max = (128*1024), 463 .period_bytes_min = 64, 464 .period_bytes_max = (128*1024), 465 .periods_min = 1, 466 .periods_max = 1024, 467 .fifo_size = 0, 468 }; 469 470 static const struct snd_pcm_hardware snd_sb16_capture = 471 { 472 .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED | 473 SNDRV_PCM_INFO_MMAP_VALID), 474 .formats = 0, 475 .rates = SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_44100, 476 .rate_min = 4000, 477 .rate_max = 44100, 478 .channels_min = 1, 479 .channels_max = 2, 480 .buffer_bytes_max = (128*1024), 481 .period_bytes_min = 64, 482 .period_bytes_max = (128*1024), 483 .periods_min = 1, 484 .periods_max = 1024, 485 .fifo_size = 0, 486 }; 487 488 /* 489 * open/close 490 */ 491 snd_sb16_playback_open(struct snd_pcm_substream * substream)492 static int snd_sb16_playback_open(struct snd_pcm_substream *substream) 493 { 494 unsigned long flags; 495 struct snd_sb *chip = snd_pcm_substream_chip(substream); 496 struct snd_pcm_runtime *runtime = substream->runtime; 497 498 spin_lock_irqsave(&chip->open_lock, flags); 499 if (chip->mode & SB_MODE_PLAYBACK) { 500 spin_unlock_irqrestore(&chip->open_lock, flags); 501 return -EAGAIN; 502 } 503 runtime->hw = snd_sb16_playback; 504 505 /* skip if 16 bit DMA was reserved for capture */ 506 if (chip->force_mode16 & SB_MODE_CAPTURE_16) 507 goto __skip_16bit; 508 509 if (chip->dma16 >= 0 && !(chip->mode & SB_MODE_CAPTURE_16)) { 510 chip->mode |= SB_MODE_PLAYBACK_16; 511 runtime->hw.formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE; 512 /* Vibra16X hack */ 513 if (chip->dma16 <= 3) { 514 runtime->hw.buffer_bytes_max = 515 runtime->hw.period_bytes_max = 64 * 1024; 516 } else { 517 snd_sb16_csp_playback_open(chip, runtime); 518 } 519 goto __open_ok; 520 } 521 522 __skip_16bit: 523 if (chip->dma8 >= 0 && !(chip->mode & SB_MODE_CAPTURE_8)) { 524 chip->mode |= SB_MODE_PLAYBACK_8; 525 /* DSP v 4.xx can transfer 16bit data through 8bit DMA channel, SBHWPG 2-7 */ 526 if (chip->dma16 < 0) { 527 runtime->hw.formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE; 528 chip->mode |= SB_MODE_PLAYBACK_16; 529 } else { 530 runtime->hw.formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S8; 531 } 532 runtime->hw.buffer_bytes_max = 533 runtime->hw.period_bytes_max = 64 * 1024; 534 goto __open_ok; 535 } 536 spin_unlock_irqrestore(&chip->open_lock, flags); 537 return -EAGAIN; 538 539 __open_ok: 540 if (chip->hardware == SB_HW_ALS100) 541 runtime->hw.rate_max = 48000; 542 if (chip->hardware == SB_HW_CS5530) { 543 runtime->hw.buffer_bytes_max = 32 * 1024; 544 runtime->hw.periods_min = 2; 545 runtime->hw.rate_min = 44100; 546 } 547 if (chip->mode & SB_RATE_LOCK) 548 runtime->hw.rate_min = runtime->hw.rate_max = chip->locked_rate; 549 chip->playback_substream = substream; 550 spin_unlock_irqrestore(&chip->open_lock, flags); 551 return 0; 552 } 553 snd_sb16_playback_close(struct snd_pcm_substream * substream)554 static int snd_sb16_playback_close(struct snd_pcm_substream *substream) 555 { 556 unsigned long flags; 557 struct snd_sb *chip = snd_pcm_substream_chip(substream); 558 559 snd_sb16_csp_playback_close(chip); 560 spin_lock_irqsave(&chip->open_lock, flags); 561 chip->playback_substream = NULL; 562 chip->mode &= ~SB_MODE_PLAYBACK; 563 spin_unlock_irqrestore(&chip->open_lock, flags); 564 return 0; 565 } 566 snd_sb16_capture_open(struct snd_pcm_substream * substream)567 static int snd_sb16_capture_open(struct snd_pcm_substream *substream) 568 { 569 unsigned long flags; 570 struct snd_sb *chip = snd_pcm_substream_chip(substream); 571 struct snd_pcm_runtime *runtime = substream->runtime; 572 573 spin_lock_irqsave(&chip->open_lock, flags); 574 if (chip->mode & SB_MODE_CAPTURE) { 575 spin_unlock_irqrestore(&chip->open_lock, flags); 576 return -EAGAIN; 577 } 578 runtime->hw = snd_sb16_capture; 579 580 /* skip if 16 bit DMA was reserved for playback */ 581 if (chip->force_mode16 & SB_MODE_PLAYBACK_16) 582 goto __skip_16bit; 583 584 if (chip->dma16 >= 0 && !(chip->mode & SB_MODE_PLAYBACK_16)) { 585 chip->mode |= SB_MODE_CAPTURE_16; 586 runtime->hw.formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE; 587 /* Vibra16X hack */ 588 if (chip->dma16 <= 3) { 589 runtime->hw.buffer_bytes_max = 590 runtime->hw.period_bytes_max = 64 * 1024; 591 } else { 592 snd_sb16_csp_capture_open(chip, runtime); 593 } 594 goto __open_ok; 595 } 596 597 __skip_16bit: 598 if (chip->dma8 >= 0 && !(chip->mode & SB_MODE_PLAYBACK_8)) { 599 chip->mode |= SB_MODE_CAPTURE_8; 600 /* DSP v 4.xx can transfer 16bit data through 8bit DMA channel, SBHWPG 2-7 */ 601 if (chip->dma16 < 0) { 602 runtime->hw.formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE; 603 chip->mode |= SB_MODE_CAPTURE_16; 604 } else { 605 runtime->hw.formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S8; 606 } 607 runtime->hw.buffer_bytes_max = 608 runtime->hw.period_bytes_max = 64 * 1024; 609 goto __open_ok; 610 } 611 spin_unlock_irqrestore(&chip->open_lock, flags); 612 return -EAGAIN; 613 614 __open_ok: 615 if (chip->hardware == SB_HW_ALS100) 616 runtime->hw.rate_max = 48000; 617 if (chip->hardware == SB_HW_CS5530) { 618 runtime->hw.buffer_bytes_max = 32 * 1024; 619 runtime->hw.periods_min = 2; 620 runtime->hw.rate_min = 44100; 621 } 622 if (chip->mode & SB_RATE_LOCK) 623 runtime->hw.rate_min = runtime->hw.rate_max = chip->locked_rate; 624 chip->capture_substream = substream; 625 spin_unlock_irqrestore(&chip->open_lock, flags); 626 return 0; 627 } 628 snd_sb16_capture_close(struct snd_pcm_substream * substream)629 static int snd_sb16_capture_close(struct snd_pcm_substream *substream) 630 { 631 unsigned long flags; 632 struct snd_sb *chip = snd_pcm_substream_chip(substream); 633 634 snd_sb16_csp_capture_close(chip); 635 spin_lock_irqsave(&chip->open_lock, flags); 636 chip->capture_substream = NULL; 637 chip->mode &= ~SB_MODE_CAPTURE; 638 spin_unlock_irqrestore(&chip->open_lock, flags); 639 return 0; 640 } 641 642 /* 643 * DMA control interface 644 */ 645 snd_sb16_set_dma_mode(struct snd_sb * chip,int what)646 static int snd_sb16_set_dma_mode(struct snd_sb *chip, int what) 647 { 648 if (chip->dma8 < 0 || chip->dma16 < 0) { 649 if (snd_BUG_ON(what)) 650 return -EINVAL; 651 return 0; 652 } 653 if (what == 0) { 654 chip->force_mode16 = 0; 655 } else if (what == 1) { 656 chip->force_mode16 = SB_MODE_PLAYBACK_16; 657 } else if (what == 2) { 658 chip->force_mode16 = SB_MODE_CAPTURE_16; 659 } else { 660 return -EINVAL; 661 } 662 return 0; 663 } 664 snd_sb16_get_dma_mode(struct snd_sb * chip)665 static int snd_sb16_get_dma_mode(struct snd_sb *chip) 666 { 667 if (chip->dma8 < 0 || chip->dma16 < 0) 668 return 0; 669 switch (chip->force_mode16) { 670 case SB_MODE_PLAYBACK_16: 671 return 1; 672 case SB_MODE_CAPTURE_16: 673 return 2; 674 default: 675 return 0; 676 } 677 } 678 snd_sb16_dma_control_info(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_info * uinfo)679 static int snd_sb16_dma_control_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo) 680 { 681 static const char * const texts[3] = { 682 "Auto", "Playback", "Capture" 683 }; 684 685 return snd_ctl_enum_info(uinfo, 1, 3, texts); 686 } 687 snd_sb16_dma_control_get(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)688 static int snd_sb16_dma_control_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) 689 { 690 struct snd_sb *chip = snd_kcontrol_chip(kcontrol); 691 unsigned long flags; 692 693 spin_lock_irqsave(&chip->reg_lock, flags); 694 ucontrol->value.enumerated.item[0] = snd_sb16_get_dma_mode(chip); 695 spin_unlock_irqrestore(&chip->reg_lock, flags); 696 return 0; 697 } 698 snd_sb16_dma_control_put(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)699 static int snd_sb16_dma_control_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) 700 { 701 struct snd_sb *chip = snd_kcontrol_chip(kcontrol); 702 unsigned long flags; 703 unsigned char nval, oval; 704 int change; 705 706 nval = ucontrol->value.enumerated.item[0]; 707 if (nval > 2) 708 return -EINVAL; 709 spin_lock_irqsave(&chip->reg_lock, flags); 710 oval = snd_sb16_get_dma_mode(chip); 711 change = nval != oval; 712 snd_sb16_set_dma_mode(chip, nval); 713 spin_unlock_irqrestore(&chip->reg_lock, flags); 714 return change; 715 } 716 717 static const struct snd_kcontrol_new snd_sb16_dma_control = { 718 .iface = SNDRV_CTL_ELEM_IFACE_CARD, 719 .name = "16-bit DMA Allocation", 720 .info = snd_sb16_dma_control_info, 721 .get = snd_sb16_dma_control_get, 722 .put = snd_sb16_dma_control_put 723 }; 724 725 /* 726 * Initialization part 727 */ 728 snd_sb16dsp_configure(struct snd_sb * chip)729 int snd_sb16dsp_configure(struct snd_sb * chip) 730 { 731 unsigned long flags; 732 unsigned char irqreg = 0, dmareg = 0, mpureg; 733 unsigned char realirq, realdma, realmpureg; 734 /* note: mpu register should be present only on SB16 Vibra soundcards */ 735 736 // printk(KERN_DEBUG "codec->irq=%i, codec->dma8=%i, codec->dma16=%i\n", chip->irq, chip->dma8, chip->dma16); 737 spin_lock_irqsave(&chip->mixer_lock, flags); 738 mpureg = snd_sbmixer_read(chip, SB_DSP4_MPUSETUP) & ~0x06; 739 spin_unlock_irqrestore(&chip->mixer_lock, flags); 740 switch (chip->irq) { 741 case 2: 742 case 9: 743 irqreg |= SB_IRQSETUP_IRQ9; 744 break; 745 case 5: 746 irqreg |= SB_IRQSETUP_IRQ5; 747 break; 748 case 7: 749 irqreg |= SB_IRQSETUP_IRQ7; 750 break; 751 case 10: 752 irqreg |= SB_IRQSETUP_IRQ10; 753 break; 754 default: 755 return -EINVAL; 756 } 757 if (chip->dma8 >= 0) { 758 switch (chip->dma8) { 759 case 0: 760 dmareg |= SB_DMASETUP_DMA0; 761 break; 762 case 1: 763 dmareg |= SB_DMASETUP_DMA1; 764 break; 765 case 3: 766 dmareg |= SB_DMASETUP_DMA3; 767 break; 768 default: 769 return -EINVAL; 770 } 771 } 772 if (chip->dma16 >= 0 && chip->dma16 != chip->dma8) { 773 switch (chip->dma16) { 774 case 5: 775 dmareg |= SB_DMASETUP_DMA5; 776 break; 777 case 6: 778 dmareg |= SB_DMASETUP_DMA6; 779 break; 780 case 7: 781 dmareg |= SB_DMASETUP_DMA7; 782 break; 783 default: 784 return -EINVAL; 785 } 786 } 787 switch (chip->mpu_port) { 788 case 0x300: 789 mpureg |= 0x04; 790 break; 791 case 0x330: 792 mpureg |= 0x00; 793 break; 794 default: 795 mpureg |= 0x02; /* disable MPU */ 796 } 797 spin_lock_irqsave(&chip->mixer_lock, flags); 798 799 snd_sbmixer_write(chip, SB_DSP4_IRQSETUP, irqreg); 800 realirq = snd_sbmixer_read(chip, SB_DSP4_IRQSETUP); 801 802 snd_sbmixer_write(chip, SB_DSP4_DMASETUP, dmareg); 803 realdma = snd_sbmixer_read(chip, SB_DSP4_DMASETUP); 804 805 snd_sbmixer_write(chip, SB_DSP4_MPUSETUP, mpureg); 806 realmpureg = snd_sbmixer_read(chip, SB_DSP4_MPUSETUP); 807 808 spin_unlock_irqrestore(&chip->mixer_lock, flags); 809 if ((~realirq) & irqreg || (~realdma) & dmareg) { 810 snd_printk(KERN_ERR "SB16 [0x%lx]: unable to set DMA & IRQ (PnP device?)\n", chip->port); 811 snd_printk(KERN_ERR "SB16 [0x%lx]: wanted: irqreg=0x%x, dmareg=0x%x, mpureg = 0x%x\n", chip->port, realirq, realdma, realmpureg); 812 snd_printk(KERN_ERR "SB16 [0x%lx]: got: irqreg=0x%x, dmareg=0x%x, mpureg = 0x%x\n", chip->port, irqreg, dmareg, mpureg); 813 return -ENODEV; 814 } 815 return 0; 816 } 817 818 static const struct snd_pcm_ops snd_sb16_playback_ops = { 819 .open = snd_sb16_playback_open, 820 .close = snd_sb16_playback_close, 821 .prepare = snd_sb16_playback_prepare, 822 .trigger = snd_sb16_playback_trigger, 823 .pointer = snd_sb16_playback_pointer, 824 }; 825 826 static const struct snd_pcm_ops snd_sb16_capture_ops = { 827 .open = snd_sb16_capture_open, 828 .close = snd_sb16_capture_close, 829 .prepare = snd_sb16_capture_prepare, 830 .trigger = snd_sb16_capture_trigger, 831 .pointer = snd_sb16_capture_pointer, 832 }; 833 snd_sb16dsp_pcm(struct snd_sb * chip,int device)834 int snd_sb16dsp_pcm(struct snd_sb *chip, int device) 835 { 836 struct snd_card *card = chip->card; 837 struct snd_pcm *pcm; 838 int err; 839 840 err = snd_pcm_new(card, "SB16 DSP", device, 1, 1, &pcm); 841 if (err < 0) 842 return err; 843 sprintf(pcm->name, "DSP v%i.%i", chip->version >> 8, chip->version & 0xff); 844 pcm->info_flags = SNDRV_PCM_INFO_JOINT_DUPLEX; 845 pcm->private_data = chip; 846 chip->pcm = pcm; 847 848 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_sb16_playback_ops); 849 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_sb16_capture_ops); 850 851 if (chip->dma16 >= 0 && chip->dma8 != chip->dma16) 852 snd_ctl_add(card, snd_ctl_new1(&snd_sb16_dma_control, chip)); 853 else 854 pcm->info_flags = SNDRV_PCM_INFO_HALF_DUPLEX; 855 856 snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV, 857 card->dev, 64*1024, 128*1024); 858 return 0; 859 } 860 snd_sb16dsp_get_pcm_ops(int direction)861 const struct snd_pcm_ops *snd_sb16dsp_get_pcm_ops(int direction) 862 { 863 return direction == SNDRV_PCM_STREAM_PLAYBACK ? 864 &snd_sb16_playback_ops : &snd_sb16_capture_ops; 865 } 866 867 EXPORT_SYMBOL(snd_sb16dsp_pcm); 868 EXPORT_SYMBOL(snd_sb16dsp_get_pcm_ops); 869 EXPORT_SYMBOL(snd_sb16dsp_configure); 870 EXPORT_SYMBOL(snd_sb16dsp_interrupt); 871