sound/isa/sb/sb16_main.c

   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 <asm/io.h>
  37 #include <asm/dma.h>
  38 #include <linux/init.h>
  39 #include <linux/time.h>
  40 #include <sound/core.h>
  41 #include <sound/sb.h>
  42 #include <sound/sb16_csp.h>
  43 #include <sound/mpu401.h>
  44 #include <sound/control.h>
  45 #include <sound/info.h>
  46
  47 MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
  48 MODULE_DESCRIPTION("Routines for control of 16-bit SoundBlaster cards and clones");
  49 MODULE_LICENSE("GPL");
  50
  51 #ifdef CONFIG_SND_SB16_CSP
  52 static void snd_sb16_csp_playback_prepare(struct snd_sb *chip, struct snd_pcm_runtime *runtime)
  53 {
  54         if (chip->hardware == SB_HW_16CSP) {
  55                 struct snd_sb_csp *csp = chip->csp;
  56
  57                 if (csp->running & SNDRV_SB_CSP_ST_LOADED) {
  58                         /* manually loaded codec */
  59                         if ((csp->mode & SNDRV_SB_CSP_MODE_DSP_WRITE) &&
  60                             ((1U << runtime->format) == csp->acc_format)) {
  61                                 /* Supported runtime PCM format for playback */
  62                                 if (csp->ops.csp_use(csp) == 0) {
  63                                         /* If CSP was successfully acquired */
  64                                         goto __start_CSP;
  65                                 }
  66                         } else if ((csp->mode & SNDRV_SB_CSP_MODE_QSOUND) && (csp->q_enabled)) {
  67                                 /* QSound decoder is loaded and enabled */
  68                                 if ((1 << runtime->format) & (SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U8 |
  69                                                               SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE)) {
  70                                         /* Only for simple PCM formats */
  71                                         if (csp->ops.csp_use(csp) == 0) {
  72                                                 /* If CSP was successfully acquired */
  73                                                 goto __start_CSP;
  74                                         }
  75                                 }
  76                         }
  77                 } else if (csp->ops.csp_use(csp) == 0) {
  78                         /* Acquire CSP and try to autoload hardware codec */
  79                         if (csp->ops.csp_autoload(csp, runtime->format, SNDRV_SB_CSP_MODE_DSP_WRITE)) {
  80                                 /* Unsupported format, release CSP */
  81                                 csp->ops.csp_unuse(csp);
  82                         } else {
  83                       __start_CSP:
  84                                 /* Try to start CSP */
  85                                 if (csp->ops.csp_start(csp, (chip->mode & SB_MODE_PLAYBACK_16) ?
  86                                                        SNDRV_SB_CSP_SAMPLE_16BIT : SNDRV_SB_CSP_SAMPLE_8BIT,
  87                                                        (runtime->channels > 1) ?
  88                                                        SNDRV_SB_CSP_STEREO : SNDRV_SB_CSP_MONO)) {
  89                                         /* Failed, release CSP */
  90                                         csp->ops.csp_unuse(csp);
  91                                 } else {
  92                                         /* Success, CSP acquired and running */
  93                                         chip->open = SNDRV_SB_CSP_MODE_DSP_WRITE;
  94                                 }
  95                         }
  96                 }
  97         }
  98 }
  99
 100 static void snd_sb16_csp_capture_prepare(struct snd_sb *chip, struct snd_pcm_runtime *runtime)
 101 {
 102         if (chip->hardware == SB_HW_16CSP) {
 103                 struct snd_sb_csp *csp = chip->csp;
 104
 105                 if (csp->running & SNDRV_SB_CSP_ST_LOADED) {
 106                         /* manually loaded codec */
 107                         if ((csp->mode & SNDRV_SB_CSP_MODE_DSP_READ) &&
 108                             ((1U << runtime->format) == csp->acc_format)) {
 109                                 /* Supported runtime PCM format for capture */
 110                                 if (csp->ops.csp_use(csp) == 0) {
 111                                         /* If CSP was successfully acquired */
 112                                         goto __start_CSP;
 113                                 }
 114                         }
 115                 } else if (csp->ops.csp_use(csp) == 0) {
 116                         /* Acquire CSP and try to autoload hardware codec */
 117                         if (csp->ops.csp_autoload(csp, runtime->format, SNDRV_SB_CSP_MODE_DSP_READ)) {
 118                                 /* Unsupported format, release CSP */
 119                                 csp->ops.csp_unuse(csp);
 120                         } else {
 121                       __start_CSP:
 122                                 /* Try to start CSP */
 123                                 if (csp->ops.csp_start(csp, (chip->mode & SB_MODE_CAPTURE_16) ?
 124                                                        SNDRV_SB_CSP_SAMPLE_16BIT : SNDRV_SB_CSP_SAMPLE_8BIT,
 125                                                        (runtime->channels > 1) ?
 126                                                        SNDRV_SB_CSP_STEREO : SNDRV_SB_CSP_MONO)) {
 127                                         /* Failed, release CSP */
 128                                         csp->ops.csp_unuse(csp);
 129                                 } else {
 130                                         /* Success, CSP acquired and running */
 131                                         chip->open = SNDRV_SB_CSP_MODE_DSP_READ;
 132                                 }
 133                         }
 134                 }
 135         }
 136 }
 137
 138 static void snd_sb16_csp_update(struct snd_sb *chip)
 139 {
 140         if (chip->hardware == SB_HW_16CSP) {
 141                 struct snd_sb_csp *csp = chip->csp;
 142
 143                 if (csp->qpos_changed) {
 144                         spin_lock(&chip->reg_lock);
 145                         csp->ops.csp_qsound_transfer (csp);
 146                         spin_unlock(&chip->reg_lock);
 147                 }
 148         }
 149 }
 150
 151 static void snd_sb16_csp_playback_open(struct snd_sb *chip, struct snd_pcm_runtime *runtime)
 152 {
 153         /* CSP decoders (QSound excluded) support only 16bit transfers */
 154         if (chip->hardware == SB_HW_16CSP) {
 155                 struct snd_sb_csp *csp = chip->csp;
 156
 157                 if (csp->running & SNDRV_SB_CSP_ST_LOADED) {
 158                         /* manually loaded codec */
 159                         if (csp->mode & SNDRV_SB_CSP_MODE_DSP_WRITE) {
 160                                 runtime->hw.formats |= csp->acc_format;
 161                         }
 162                 } else {
 163                         /* autoloaded codecs */
 164                         runtime->hw.formats |= SNDRV_PCM_FMTBIT_MU_LAW | SNDRV_PCM_FMTBIT_A_LAW |
 165                                                SNDRV_PCM_FMTBIT_IMA_ADPCM;
 166                 }
 167         }
 168 }
 169
 170 static void snd_sb16_csp_playback_close(struct snd_sb *chip)
 171 {
 172         if ((chip->hardware == SB_HW_16CSP) && (chip->open == SNDRV_SB_CSP_MODE_DSP_WRITE)) {
 173                 struct snd_sb_csp *csp = chip->csp;
 174
 175                 if (csp->ops.csp_stop(csp) == 0) {
 176                         csp->ops.csp_unuse(csp);
 177                         chip->open = 0;
 178                 }
 179         }
 180 }
 181
 182 static void snd_sb16_csp_capture_open(struct snd_sb *chip, struct snd_pcm_runtime *runtime)
 183 {
 184         /* CSP coders support only 16bit transfers */
 185         if (chip->hardware == SB_HW_16CSP) {
 186                 struct snd_sb_csp *csp = chip->csp;
 187
 188                 if (csp->running & SNDRV_SB_CSP_ST_LOADED) {
 189                         /* manually loaded codec */
 190                         if (csp->mode & SNDRV_SB_CSP_MODE_DSP_READ) {
 191                                 runtime->hw.formats |= csp->acc_format;
 192                         }
 193                 } else {
 194                         /* autoloaded codecs */
 195                         runtime->hw.formats |= SNDRV_PCM_FMTBIT_MU_LAW | SNDRV_PCM_FMTBIT_A_LAW |
 196                                                SNDRV_PCM_FMTBIT_IMA_ADPCM;
 197                 }
 198         }
 199 }
 200
 201 static void snd_sb16_csp_capture_close(struct snd_sb *chip)
 202 {
 203         if ((chip->hardware == SB_HW_16CSP) && (chip->open == SNDRV_SB_CSP_MODE_DSP_READ)) {
 204                 struct snd_sb_csp *csp = chip->csp;
 205
 206                 if (csp->ops.csp_stop(csp) == 0) {
 207                         csp->ops.csp_unuse(csp);
 208                         chip->open = 0;
 209                 }
 210         }
 211 }
 212 #else
 213 #define snd_sb16_csp_playback_prepare(chip, runtime)    /*nop*/
 214 #define snd_sb16_csp_capture_prepare(chip, runtime)     /*nop*/
 215 #define snd_sb16_csp_update(chip)                       /*nop*/
 216 #define snd_sb16_csp_playback_open(chip, runtime)       /*nop*/
 217 #define snd_sb16_csp_playback_close(chip)               /*nop*/
 218 #define snd_sb16_csp_capture_open(chip, runtime)        /*nop*/
 219 #define snd_sb16_csp_capture_close(chip)                /*nop*/
 220 #endif
 221
 222
 223 static void snd_sb16_setup_rate(struct snd_sb *chip,
 224                                 unsigned short rate,
 225                                 int channel)
 226 {
 227         unsigned long flags;
 228
 229         spin_lock_irqsave(&chip->reg_lock, flags);
 230         if (chip->mode & (channel == SNDRV_PCM_STREAM_PLAYBACK ? SB_MODE_PLAYBACK_16 : SB_MODE_CAPTURE_16))
 231                 snd_sb_ack_16bit(chip);
 232         else
 233                 snd_sb_ack_8bit(chip);
 234         if (!(chip->mode & SB_RATE_LOCK)) {
 235                 chip->locked_rate = rate;
 236                 snd_sbdsp_command(chip, SB_DSP_SAMPLE_RATE_IN);
 237                 snd_sbdsp_command(chip, rate >> 8);
 238                 snd_sbdsp_command(chip, rate & 0xff);
 239                 snd_sbdsp_command(chip, SB_DSP_SAMPLE_RATE_OUT);
 240                 snd_sbdsp_command(chip, rate >> 8);
 241                 snd_sbdsp_command(chip, rate & 0xff);
 242         }
 243         spin_unlock_irqrestore(&chip->reg_lock, flags);
 244 }
 245
 246 static int snd_sb16_hw_params(struct snd_pcm_substream *substream,
 247                               struct snd_pcm_hw_params *hw_params)
 248 {
 249         return snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
 250 }
 251
 252 static int snd_sb16_hw_free(struct snd_pcm_substream *substream)
 253 {
 254         snd_pcm_lib_free_pages(substream);
 255         return 0;
 256 }
 257
 258 static int snd_sb16_playback_prepare(struct snd_pcm_substream *substream)
 259 {
 260         unsigned long flags;
 261         struct snd_sb *chip = snd_pcm_substream_chip(substream);
 262         struct snd_pcm_runtime *runtime = substream->runtime;
 263         unsigned char format;
 264         unsigned int size, count, dma;
 265
 266         snd_sb16_csp_playback_prepare(chip, runtime);
 267         if (snd_pcm_format_unsigned(runtime->format) > 0) {
 268                 format = runtime->channels > 1 ? SB_DSP4_MODE_UNS_STEREO : SB_DSP4_MODE_UNS_MONO;
 269         } else {
 270                 format = runtime->channels > 1 ? SB_DSP4_MODE_SIGN_STEREO : SB_DSP4_MODE_SIGN_MONO;
 271         }
 272
 273         snd_sb16_setup_rate(chip, runtime->rate, SNDRV_PCM_STREAM_PLAYBACK);
 274         size = chip->p_dma_size = snd_pcm_lib_buffer_bytes(substream);
 275         dma = (chip->mode & SB_MODE_PLAYBACK_8) ? chip->dma8 : chip->dma16;
 276         snd_dma_program(dma, runtime->dma_addr, size, DMA_MODE_WRITE | DMA_AUTOINIT);
 277
 278         count = snd_pcm_lib_period_bytes(substream);
 279         spin_lock_irqsave(&chip->reg_lock, flags);
 280         if (chip->mode & SB_MODE_PLAYBACK_16) {
 281                 count >>= 1;
 282                 count--;
 283                 snd_sbdsp_command(chip, SB_DSP4_OUT16_AI);
 284                 snd_sbdsp_command(chip, format);
 285                 snd_sbdsp_command(chip, count & 0xff);
 286                 snd_sbdsp_command(chip, count >> 8);
 287                 snd_sbdsp_command(chip, SB_DSP_DMA16_OFF);
 288         } else {
 289                 count--;
 290                 snd_sbdsp_command(chip, SB_DSP4_OUT8_AI);
 291                 snd_sbdsp_command(chip, format);
 292                 snd_sbdsp_command(chip, count & 0xff);
 293                 snd_sbdsp_command(chip, count >> 8);
 294                 snd_sbdsp_command(chip, SB_DSP_DMA8_OFF);
 295         }
 296         spin_unlock_irqrestore(&chip->reg_lock, flags);
 297         return 0;
 298 }
 299
 300 static int snd_sb16_playback_trigger(struct snd_pcm_substream *substream,
 301                                      int cmd)
 302 {
 303         struct snd_sb *chip = snd_pcm_substream_chip(substream);
 304         int result = 0;
 305
 306         spin_lock(&chip->reg_lock);
 307         switch (cmd) {
 308         case SNDRV_PCM_TRIGGER_START:
 309         case SNDRV_PCM_TRIGGER_RESUME:
 310                 chip->mode |= SB_RATE_LOCK_PLAYBACK;
 311                 snd_sbdsp_command(chip, chip->mode & SB_MODE_PLAYBACK_16 ? SB_DSP_DMA16_ON : SB_DSP_DMA8_ON);
 312                 break;
 313         case SNDRV_PCM_TRIGGER_STOP:
 314         case SNDRV_PCM_TRIGGER_SUSPEND:
 315                 snd_sbdsp_command(chip, chip->mode & SB_MODE_PLAYBACK_16 ? SB_DSP_DMA16_OFF : SB_DSP_DMA8_OFF);
 316                 /* next two lines are needed for some types of DSP4 (SB AWE 32 - 4.13) */
 317                 if (chip->mode & SB_RATE_LOCK_CAPTURE)
 318                         snd_sbdsp_command(chip, chip->mode & SB_MODE_CAPTURE_16 ? SB_DSP_DMA16_ON : SB_DSP_DMA8_ON);
 319                 chip->mode &= ~SB_RATE_LOCK_PLAYBACK;
 320                 break;
 321         default:
 322                 result = -EINVAL;
 323         }
 324         spin_unlock(&chip->reg_lock);
 325         return result;
 326 }
 327
 328 static int snd_sb16_capture_prepare(struct snd_pcm_substream *substream)
 329 {
 330         unsigned long flags;
 331         struct snd_sb *chip = snd_pcm_substream_chip(substream);
 332         struct snd_pcm_runtime *runtime = substream->runtime;
 333         unsigned char format;
 334         unsigned int size, count, dma;
 335
 336         snd_sb16_csp_capture_prepare(chip, runtime);
 337         if (snd_pcm_format_unsigned(runtime->format) > 0) {
 338                 format = runtime->channels > 1 ? SB_DSP4_MODE_UNS_STEREO : SB_DSP4_MODE_UNS_MONO;
 339         } else {
 340                 format = runtime->channels > 1 ? SB_DSP4_MODE_SIGN_STEREO : SB_DSP4_MODE_SIGN_MONO;
 341         }
 342         snd_sb16_setup_rate(chip, runtime->rate, SNDRV_PCM_STREAM_CAPTURE);
 343         size = chip->c_dma_size = snd_pcm_lib_buffer_bytes(substream);
 344         dma = (chip->mode & SB_MODE_CAPTURE_8) ? chip->dma8 : chip->dma16;
 345         snd_dma_program(dma, runtime->dma_addr, size, DMA_MODE_READ | DMA_AUTOINIT);
 346
 347         count = snd_pcm_lib_period_bytes(substream);
 348         spin_lock_irqsave(&chip->reg_lock, flags);
 349         if (chip->mode & SB_MODE_CAPTURE_16) {
 350                 count >>= 1;
 351                 count--;
 352                 snd_sbdsp_command(chip, SB_DSP4_IN16_AI);
 353                 snd_sbdsp_command(chip, format);
 354                 snd_sbdsp_command(chip, count & 0xff);
 355                 snd_sbdsp_command(chip, count >> 8);
 356                 snd_sbdsp_command(chip, SB_DSP_DMA16_OFF);
 357         } else {
 358                 count--;
 359                 snd_sbdsp_command(chip, SB_DSP4_IN8_AI);
 360                 snd_sbdsp_command(chip, format);
 361                 snd_sbdsp_command(chip, count & 0xff);
 362                 snd_sbdsp_command(chip, count >> 8);
 363                 snd_sbdsp_command(chip, SB_DSP_DMA8_OFF);
 364         }
 365         spin_unlock_irqrestore(&chip->reg_lock, flags);
 366         return 0;
 367 }
 368
 369 static int snd_sb16_capture_trigger(struct snd_pcm_substream *substream,
 370                                     int cmd)
 371 {
 372         struct snd_sb *chip = snd_pcm_substream_chip(substream);
 373         int result = 0;
 374
 375         spin_lock(&chip->reg_lock);
 376         switch (cmd) {
 377         case SNDRV_PCM_TRIGGER_START:
 378         case SNDRV_PCM_TRIGGER_RESUME:
 379                 chip->mode |= SB_RATE_LOCK_CAPTURE;
 380                 snd_sbdsp_command(chip, chip->mode & SB_MODE_CAPTURE_16 ? SB_DSP_DMA16_ON : SB_DSP_DMA8_ON);
 381                 break;
 382         case SNDRV_PCM_TRIGGER_STOP:
 383         case SNDRV_PCM_TRIGGER_SUSPEND:
 384                 snd_sbdsp_command(chip, chip->mode & SB_MODE_CAPTURE_16 ? SB_DSP_DMA16_OFF : SB_DSP_DMA8_OFF);
 385                 /* next two lines are needed for some types of DSP4 (SB AWE 32 - 4.13) */
 386                 if (chip->mode & SB_RATE_LOCK_PLAYBACK)
 387                         snd_sbdsp_command(chip, chip->mode & SB_MODE_PLAYBACK_16 ? SB_DSP_DMA16_ON : SB_DSP_DMA8_ON);
 388                 chip->mode &= ~SB_RATE_LOCK_CAPTURE;
 389                 break;
 390         default:
 391                 result = -EINVAL;
 392         }
 393         spin_unlock(&chip->reg_lock);
 394         return result;
 395 }
 396
 397 irqreturn_t snd_sb16dsp_interrupt(int irq, void *dev_id)
 398 {
 399         struct snd_sb *chip = dev_id;
 400         unsigned char status;
 401         int ok;
 402
 403         spin_lock(&chip->mixer_lock);
 404         status = snd_sbmixer_read(chip, SB_DSP4_IRQSTATUS);
 405         spin_unlock(&chip->mixer_lock);
 406         if ((status & SB_IRQTYPE_MPUIN) && chip->rmidi_callback)
 407                 chip->rmidi_callback(irq, chip->rmidi->private_data);
 408         if (status & SB_IRQTYPE_8BIT) {
 409                 ok = 0;
 410                 if (chip->mode & SB_MODE_PLAYBACK_8) {
 411                         snd_pcm_period_elapsed(chip->playback_substream);
 412                         snd_sb16_csp_update(chip);
 413                         ok++;
 414                 }
 415                 if (chip->mode & SB_MODE_CAPTURE_8) {
 416                         snd_pcm_period_elapsed(chip->capture_substream);
 417                         ok++;
 418                 }
 419                 spin_lock(&chip->reg_lock);
 420                 if (!ok)
 421                         snd_sbdsp_command(chip, SB_DSP_DMA8_OFF);
 422                 snd_sb_ack_8bit(chip);
 423                 spin_unlock(&chip->reg_lock);
 424         }
 425         if (status & SB_IRQTYPE_16BIT) {
 426                 ok = 0;
 427                 if (chip->mode & SB_MODE_PLAYBACK_16) {
 428                         snd_pcm_period_elapsed(chip->playback_substream);
 429                         snd_sb16_csp_update(chip);
 430                         ok++;
 431                 }
 432                 if (chip->mode & SB_MODE_CAPTURE_16) {
 433                         snd_pcm_period_elapsed(chip->capture_substream);
 434                         ok++;
 435                 }
 436                 spin_lock(&chip->reg_lock);
 437                 if (!ok)
 438                         snd_sbdsp_command(chip, SB_DSP_DMA16_OFF);
 439                 snd_sb_ack_16bit(chip);
 440                 spin_unlock(&chip->reg_lock);
 441         }
 442         return IRQ_HANDLED;
 443 }
 444
 445 /*
 446
 447  */
 448
 449 static snd_pcm_uframes_t snd_sb16_playback_pointer(struct snd_pcm_substream *substream)
 450 {
 451         struct snd_sb *chip = snd_pcm_substream_chip(substream);
 452         unsigned int dma;
 453         size_t ptr;
 454
 455         dma = (chip->mode & SB_MODE_PLAYBACK_8) ? chip->dma8 : chip->dma16;
 456         ptr = snd_dma_pointer(dma, chip->p_dma_size);
 457         return bytes_to_frames(substream->runtime, ptr);
 458 }
 459
 460 static snd_pcm_uframes_t snd_sb16_capture_pointer(struct snd_pcm_substream *substream)
 461 {
 462         struct snd_sb *chip = snd_pcm_substream_chip(substream);
 463         unsigned int dma;
 464         size_t ptr;
 465
 466         dma = (chip->mode & SB_MODE_CAPTURE_8) ? chip->dma8 : chip->dma16;
 467         ptr = snd_dma_pointer(dma, chip->c_dma_size);
 468         return bytes_to_frames(substream->runtime, ptr);
 469 }
 470
 471 /*
 472
 473  */
 474
 475 static struct snd_pcm_hardware snd_sb16_playback =
 476 {
 477         .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
 478                                  SNDRV_PCM_INFO_MMAP_VALID),
 479         .formats =              0,
 480         .rates =                SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_44100,
 481         .rate_min =             4000,
 482         .rate_max =             44100,
 483         .channels_min =         1,
 484         .channels_max =         2,
 485         .buffer_bytes_max =     (128*1024),
 486         .period_bytes_min =     64,
 487         .period_bytes_max =     (128*1024),
 488         .periods_min =          1,
 489         .periods_max =          1024,
 490         .fifo_size =            0,
 491 };
 492
 493 static struct snd_pcm_hardware snd_sb16_capture =
 494 {
 495         .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
 496                                  SNDRV_PCM_INFO_MMAP_VALID),
 497         .formats =              0,
 498         .rates =                SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_44100,
 499         .rate_min =             4000,
 500         .rate_max =             44100,
 501         .channels_min =         1,
 502         .channels_max =         2,
 503         .buffer_bytes_max =     (128*1024),
 504         .period_bytes_min =     64,
 505         .period_bytes_max =     (128*1024),
 506         .periods_min =          1,
 507         .periods_max =          1024,
 508         .fifo_size =            0,
 509 };
 510
 511 /*
 512  *  open/close
 513  */
 514
 515 static int snd_sb16_playback_open(struct snd_pcm_substream *substream)
 516 {
 517         unsigned long flags;
 518         struct snd_sb *chip = snd_pcm_substream_chip(substream);
 519         struct snd_pcm_runtime *runtime = substream->runtime;
 520
 521         spin_lock_irqsave(&chip->open_lock, flags);
 522         if (chip->mode & SB_MODE_PLAYBACK) {
 523                 spin_unlock_irqrestore(&chip->open_lock, flags);
 524                 return -EAGAIN;
 525         }
 526         runtime->hw = snd_sb16_playback;
 527
 528         /* skip if 16 bit DMA was reserved for capture */
 529         if (chip->force_mode16 & SB_MODE_CAPTURE_16)
 530                 goto __skip_16bit;
 531
 532         if (chip->dma16 >= 0 && !(chip->mode & SB_MODE_CAPTURE_16)) {
 533                 chip->mode |= SB_MODE_PLAYBACK_16;
 534                 runtime->hw.formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE;
 535                 /* Vibra16X hack */
 536                 if (chip->dma16 <= 3) {
 537                         runtime->hw.buffer_bytes_max =
 538                         runtime->hw.period_bytes_max = 64 * 1024;
 539                 } else {
 540                         snd_sb16_csp_playback_open(chip, runtime);
 541                 }
 542                 goto __open_ok;
 543         }
 544
 545       __skip_16bit:
 546         if (chip->dma8 >= 0 && !(chip->mode & SB_MODE_CAPTURE_8)) {
 547                 chip->mode |= SB_MODE_PLAYBACK_8;
 548                 /* DSP v 4.xx can transfer 16bit data through 8bit DMA channel, SBHWPG 2-7 */
 549                 if (chip->dma16 < 0) {
 550                         runtime->hw.formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE;
 551                         chip->mode |= SB_MODE_PLAYBACK_16;
 552                 } else {
 553                         runtime->hw.formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S8;
 554                 }
 555                 runtime->hw.buffer_bytes_max =
 556                 runtime->hw.period_bytes_max = 64 * 1024;
 557                 goto __open_ok;
 558         }
 559         spin_unlock_irqrestore(&chip->open_lock, flags);
 560         return -EAGAIN;
 561
 562       __open_ok:
 563         if (chip->hardware == SB_HW_ALS100)
 564                 runtime->hw.rate_max = 48000;
 565         if (chip->hardware == SB_HW_CS5530) {
 566                 runtime->hw.buffer_bytes_max = 32 * 1024;
 567                 runtime->hw.periods_min = 2;
 568                 runtime->hw.rate_min = 44100;
 569         }
 570         if (chip->mode & SB_RATE_LOCK)
 571                 runtime->hw.rate_min = runtime->hw.rate_max = chip->locked_rate;
 572         chip->playback_substream = substream;
 573         spin_unlock_irqrestore(&chip->open_lock, flags);
 574         return 0;
 575 }
 576
 577 static int snd_sb16_playback_close(struct snd_pcm_substream *substream)
 578 {
 579         unsigned long flags;
 580         struct snd_sb *chip = snd_pcm_substream_chip(substream);
 581
 582         snd_sb16_csp_playback_close(chip);
 583         spin_lock_irqsave(&chip->open_lock, flags);
 584         chip->playback_substream = NULL;
 585         chip->mode &= ~SB_MODE_PLAYBACK;
 586         spin_unlock_irqrestore(&chip->open_lock, flags);
 587         return 0;
 588 }
 589
 590 static int snd_sb16_capture_open(struct snd_pcm_substream *substream)
 591 {
 592         unsigned long flags;
 593         struct snd_sb *chip = snd_pcm_substream_chip(substream);
 594         struct snd_pcm_runtime *runtime = substream->runtime;
 595
 596         spin_lock_irqsave(&chip->open_lock, flags);
 597         if (chip->mode & SB_MODE_CAPTURE) {
 598                 spin_unlock_irqrestore(&chip->open_lock, flags);
 599                 return -EAGAIN;
 600         }
 601         runtime->hw = snd_sb16_capture;
 602
 603         /* skip if 16 bit DMA was reserved for playback */
 604         if (chip->force_mode16 & SB_MODE_PLAYBACK_16)
 605                 goto __skip_16bit;
 606
 607         if (chip->dma16 >= 0 && !(chip->mode & SB_MODE_PLAYBACK_16)) {
 608                 chip->mode |= SB_MODE_CAPTURE_16;
 609                 runtime->hw.formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE;
 610                 /* Vibra16X hack */
 611                 if (chip->dma16 <= 3) {
 612                         runtime->hw.buffer_bytes_max =
 613                         runtime->hw.period_bytes_max = 64 * 1024;
 614                 } else {
 615                         snd_sb16_csp_capture_open(chip, runtime);
 616                 }
 617                 goto __open_ok;
 618         }
 619
 620       __skip_16bit:
 621         if (chip->dma8 >= 0 && !(chip->mode & SB_MODE_PLAYBACK_8)) {
 622                 chip->mode |= SB_MODE_CAPTURE_8;
 623                 /* DSP v 4.xx can transfer 16bit data through 8bit DMA channel, SBHWPG 2-7 */
 624                 if (chip->dma16 < 0) {
 625                         runtime->hw.formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE;
 626                         chip->mode |= SB_MODE_CAPTURE_16;
 627                 } else {
 628                         runtime->hw.formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S8;
 629                 }
 630                 runtime->hw.buffer_bytes_max =
 631                 runtime->hw.period_bytes_max = 64 * 1024;
 632                 goto __open_ok;
 633         }
 634         spin_unlock_irqrestore(&chip->open_lock, flags);
 635         return -EAGAIN;
 636
 637       __open_ok:
 638         if (chip->hardware == SB_HW_ALS100)
 639                 runtime->hw.rate_max = 48000;
 640         if (chip->hardware == SB_HW_CS5530) {
 641                 runtime->hw.buffer_bytes_max = 32 * 1024;
 642                 runtime->hw.periods_min = 2;
 643                 runtime->hw.rate_min = 44100;
 644         }
 645         if (chip->mode & SB_RATE_LOCK)
 646                 runtime->hw.rate_min = runtime->hw.rate_max = chip->locked_rate;
 647         chip->capture_substream = substream;
 648         spin_unlock_irqrestore(&chip->open_lock, flags);
 649         return 0;
 650 }
 651
 652 static int snd_sb16_capture_close(struct snd_pcm_substream *substream)
 653 {
 654         unsigned long flags;
 655         struct snd_sb *chip = snd_pcm_substream_chip(substream);
 656
 657         snd_sb16_csp_capture_close(chip);
 658         spin_lock_irqsave(&chip->open_lock, flags);
 659         chip->capture_substream = NULL;
 660         chip->mode &= ~SB_MODE_CAPTURE;
 661         spin_unlock_irqrestore(&chip->open_lock, flags);
 662         return 0;
 663 }
 664
 665 /*
 666  *  DMA control interface
 667  */
 668
 669 static int snd_sb16_set_dma_mode(struct snd_sb *chip, int what)
 670 {
 671         if (chip->dma8 < 0 || chip->dma16 < 0) {
 672                 if (snd_BUG_ON(what))
 673                         return -EINVAL;
 674                 return 0;
 675         }
 676         if (what == 0) {
 677                 chip->force_mode16 = 0;
 678         } else if (what == 1) {
 679                 chip->force_mode16 = SB_MODE_PLAYBACK_16;
 680         } else if (what == 2) {
 681                 chip->force_mode16 = SB_MODE_CAPTURE_16;
 682         } else {
 683                 return -EINVAL;
 684         }
 685         return 0;
 686 }
 687
 688 static int snd_sb16_get_dma_mode(struct snd_sb *chip)
 689 {
 690         if (chip->dma8 < 0 || chip->dma16 < 0)
 691                 return 0;
 692         switch (chip->force_mode16) {
 693         case SB_MODE_PLAYBACK_16:
 694                 return 1;
 695         case SB_MODE_CAPTURE_16:
 696                 return 2;
 697         default:
 698                 return 0;
 699         }
 700 }
 701
 702 static int snd_sb16_dma_control_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
 703 {
 704         static char *texts[3] = {
 705                 "Auto", "Playback", "Capture"
 706         };
 707
 708         uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
 709         uinfo->count = 1;
 710         uinfo->value.enumerated.items = 3;
 711         if (uinfo->value.enumerated.item > 2)
 712                 uinfo->value.enumerated.item = 2;
 713         strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
 714         return 0;
 715 }
 716
 717 static int snd_sb16_dma_control_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
 718 {
 719         struct snd_sb *chip = snd_kcontrol_chip(kcontrol);
 720         unsigned long flags;
 721
 722         spin_lock_irqsave(&chip->reg_lock, flags);
 723         ucontrol->value.enumerated.item[0] = snd_sb16_get_dma_mode(chip);
 724         spin_unlock_irqrestore(&chip->reg_lock, flags);
 725         return 0;
 726 }
 727
 728 static int snd_sb16_dma_control_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
 729 {
 730         struct snd_sb *chip = snd_kcontrol_chip(kcontrol);
 731         unsigned long flags;
 732         unsigned char nval, oval;
 733         int change;
 734
 735         if ((nval = ucontrol->value.enumerated.item[0]) > 2)
 736                 return -EINVAL;
 737         spin_lock_irqsave(&chip->reg_lock, flags);
 738         oval = snd_sb16_get_dma_mode(chip);
 739         change = nval != oval;
 740         snd_sb16_set_dma_mode(chip, nval);
 741         spin_unlock_irqrestore(&chip->reg_lock, flags);
 742         return change;
 743 }
 744
 745 static struct snd_kcontrol_new snd_sb16_dma_control = {
 746         .iface = SNDRV_CTL_ELEM_IFACE_CARD,
 747         .name = "16-bit DMA Allocation",
 748         .info = snd_sb16_dma_control_info,
 749         .get = snd_sb16_dma_control_get,
 750         .put = snd_sb16_dma_control_put
 751 };
 752
 753 /*
 754  *  Initialization part
 755  */
 756
 757 int snd_sb16dsp_configure(struct snd_sb * chip)
 758 {
 759         unsigned long flags;
 760         unsigned char irqreg = 0, dmareg = 0, mpureg;
 761         unsigned char realirq, realdma, realmpureg;
 762         /* note: mpu register should be present only on SB16 Vibra soundcards */
 763
 764         // printk(KERN_DEBUG "codec->irq=%i, codec->dma8=%i, codec->dma16=%i\n", chip->irq, chip->dma8, chip->dma16);
 765         spin_lock_irqsave(&chip->mixer_lock, flags);
 766         mpureg = snd_sbmixer_read(chip, SB_DSP4_MPUSETUP) & ~0x06;
 767         spin_unlock_irqrestore(&chip->mixer_lock, flags);
 768         switch (chip->irq) {
 769         case 2:
 770         case 9:
 771                 irqreg |= SB_IRQSETUP_IRQ9;
 772                 break;
 773         case 5:
 774                 irqreg |= SB_IRQSETUP_IRQ5;
 775                 break;
 776         case 7:
 777                 irqreg |= SB_IRQSETUP_IRQ7;
 778                 break;
 779         case 10:
 780                 irqreg |= SB_IRQSETUP_IRQ10;
 781                 break;
 782         default:
 783                 return -EINVAL;
 784         }
 785         if (chip->dma8 >= 0) {
 786                 switch (chip->dma8) {
 787                 case 0:
 788                         dmareg |= SB_DMASETUP_DMA0;
 789                         break;
 790                 case 1:
 791                         dmareg |= SB_DMASETUP_DMA1;
 792                         break;
 793                 case 3:
 794                         dmareg |= SB_DMASETUP_DMA3;
 795                         break;
 796                 default:
 797                         return -EINVAL;
 798                 }
 799         }
 800         if (chip->dma16 >= 0 && chip->dma16 != chip->dma8) {
 801                 switch (chip->dma16) {
 802                 case 5:
 803                         dmareg |= SB_DMASETUP_DMA5;
 804                         break;
 805                 case 6:
 806                         dmareg |= SB_DMASETUP_DMA6;
 807                         break;
 808                 case 7:
 809                         dmareg |= SB_DMASETUP_DMA7;
 810                         break;
 811                 default:
 812                         return -EINVAL;
 813                 }
 814         }
 815         switch (chip->mpu_port) {
 816         case 0x300:
 817                 mpureg |= 0x04;
 818                 break;
 819         case 0x330:
 820                 mpureg |= 0x00;
 821                 break;
 822         default:
 823                 mpureg |= 0x02; /* disable MPU */
 824         }
 825         spin_lock_irqsave(&chip->mixer_lock, flags);
 826
 827         snd_sbmixer_write(chip, SB_DSP4_IRQSETUP, irqreg);
 828         realirq = snd_sbmixer_read(chip, SB_DSP4_IRQSETUP);
 829
 830         snd_sbmixer_write(chip, SB_DSP4_DMASETUP, dmareg);
 831         realdma = snd_sbmixer_read(chip, SB_DSP4_DMASETUP);
 832
 833         snd_sbmixer_write(chip, SB_DSP4_MPUSETUP, mpureg);
 834         realmpureg = snd_sbmixer_read(chip, SB_DSP4_MPUSETUP);
 835
 836         spin_unlock_irqrestore(&chip->mixer_lock, flags);
 837         if ((~realirq) & irqreg || (~realdma) & dmareg) {
 838                 snd_printk(KERN_ERR "SB16 [0x%lx]: unable to set DMA & IRQ (PnP device?)\n", chip->port);
 839                 snd_printk(KERN_ERR "SB16 [0x%lx]: wanted: irqreg=0x%x, dmareg=0x%x, mpureg = 0x%x\n", chip->port, realirq, realdma, realmpureg);
 840                 snd_printk(KERN_ERR "SB16 [0x%lx]:    got: irqreg=0x%x, dmareg=0x%x, mpureg = 0x%x\n", chip->port, irqreg, dmareg, mpureg);
 841                 return -ENODEV;
 842         }
 843         return 0;
 844 }
 845
 846 static struct snd_pcm_ops snd_sb16_playback_ops = {
 847         .open =         snd_sb16_playback_open,
 848         .close =        snd_sb16_playback_close,
 849         .ioctl =        snd_pcm_lib_ioctl,
 850         .hw_params =    snd_sb16_hw_params,
 851         .hw_free =      snd_sb16_hw_free,
 852         .prepare =      snd_sb16_playback_prepare,
 853         .trigger =      snd_sb16_playback_trigger,
 854         .pointer =      snd_sb16_playback_pointer,
 855 };
 856
 857 static struct snd_pcm_ops snd_sb16_capture_ops = {
 858         .open =         snd_sb16_capture_open,
 859         .close =        snd_sb16_capture_close,
 860         .ioctl =        snd_pcm_lib_ioctl,
 861         .hw_params =    snd_sb16_hw_params,
 862         .hw_free =      snd_sb16_hw_free,
 863         .prepare =      snd_sb16_capture_prepare,
 864         .trigger =      snd_sb16_capture_trigger,
 865         .pointer =      snd_sb16_capture_pointer,
 866 };
 867
 868 int snd_sb16dsp_pcm(struct snd_sb * chip, int device, struct snd_pcm ** rpcm)
 869 {
 870         struct snd_card *card = chip->card;
 871         struct snd_pcm *pcm;
 872         int err;
 873
 874         if (rpcm)
 875                 *rpcm = NULL;
 876         if ((err = snd_pcm_new(card, "SB16 DSP", device, 1, 1, &pcm)) < 0)
 877                 return err;
 878         sprintf(pcm->name, "DSP v%i.%i", chip->version >> 8, chip->version & 0xff);
 879         pcm->info_flags = SNDRV_PCM_INFO_JOINT_DUPLEX;
 880         pcm->private_data = chip;
 881
 882         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_sb16_playback_ops);
 883         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_sb16_capture_ops);
 884
 885         if (chip->dma16 >= 0 && chip->dma8 != chip->dma16)
 886                 snd_ctl_add(card, snd_ctl_new1(&snd_sb16_dma_control, chip));
 887         else
 888                 pcm->info_flags = SNDRV_PCM_INFO_HALF_DUPLEX;
 889
 890         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
 891                                               snd_dma_isa_data(),
 892                                               64*1024, 128*1024);
 893
 894         if (rpcm)
 895                 *rpcm = pcm;
 896         return 0;
 897 }
 898
 899 const struct snd_pcm_ops *snd_sb16dsp_get_pcm_ops(int direction)
 900 {
 901         return direction == SNDRV_PCM_STREAM_PLAYBACK ?
 902                 &snd_sb16_playback_ops : &snd_sb16_capture_ops;
 903 }
 904
 905 EXPORT_SYMBOL(snd_sb16dsp_pcm);
 906 EXPORT_SYMBOL(snd_sb16dsp_get_pcm_ops);
 907 EXPORT_SYMBOL(snd_sb16dsp_configure);
 908 EXPORT_SYMBOL(snd_sb16dsp_interrupt);
 909
 910 /*
 911  *  INIT part
 912  */
 913
 914 static int __init alsa_sb16_init(void)
 915 {
 916         return 0;
 917 }
 918
 919 static void __exit alsa_sb16_exit(void)
 920 {
 921 }
 922
 923 module_init(alsa_sb16_init)
 924 module_exit(alsa_sb16_exit)