sound/isa/sb/sb16_main.c

   1 /*
   2  *  Copyright (c) by Jaroslav Kysela <perex@suse.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 <sound/driver.h>
  37 #include <asm/io.h>
  38 #include <asm/dma.h>
  39 #include <linux/init.h>
  40 #include <linux/time.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@suse.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(sb_t *chip, snd_pcm_runtime_t *runtime)
  54 {
  55         if (chip->hardware == SB_HW_16CSP) {
  56                 snd_sb_csp_t *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(sb_t *chip, snd_pcm_runtime_t *runtime)
 102 {
 103         if (chip->hardware == SB_HW_16CSP) {
 104                 snd_sb_csp_t *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(sb_t *chip)
 140 {
 141         if (chip->hardware == SB_HW_16CSP) {
 142                 snd_sb_csp_t *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(sb_t *chip, snd_pcm_runtime_t *runtime)
 153 {
 154         /* CSP decoders (QSound excluded) support only 16bit transfers */
 155         if (chip->hardware == SB_HW_16CSP) {
 156                 snd_sb_csp_t *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(sb_t *chip)
 172 {
 173         if ((chip->hardware == SB_HW_16CSP) && (chip->open == SNDRV_SB_CSP_MODE_DSP_WRITE)) {
 174                 snd_sb_csp_t *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(sb_t *chip, snd_pcm_runtime_t *runtime)
 184 {
 185         /* CSP coders support only 16bit transfers */
 186         if (chip->hardware == SB_HW_16CSP) {
 187                 snd_sb_csp_t *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(sb_t *chip)
 203 {
 204         if ((chip->hardware == SB_HW_16CSP) && (chip->open == SNDRV_SB_CSP_MODE_DSP_READ)) {
 205                 snd_sb_csp_t *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(sb_t *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(snd_pcm_substream_t * substream,
 248                               snd_pcm_hw_params_t * 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(snd_pcm_substream_t * substream)
 254 {
 255         snd_pcm_lib_free_pages(substream);
 256         return 0;
 257 }
 258
 259 static int snd_sb16_playback_prepare(snd_pcm_substream_t * substream)
 260 {
 261         unsigned long flags;
 262         sb_t *chip = snd_pcm_substream_chip(substream);
 263         snd_pcm_runtime_t *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(snd_pcm_substream_t * substream,
 302                                      int cmd)
 303 {
 304         sb_t *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                 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                 snd_sbdsp_command(chip, chip->mode & SB_MODE_PLAYBACK_16 ? SB_DSP_DMA16_OFF : SB_DSP_DMA8_OFF);
 315                 /* next two lines are needed for some types of DSP4 (SB AWE 32 - 4.13) */
 316                 if (chip->mode & SB_RATE_LOCK_CAPTURE)
 317                         snd_sbdsp_command(chip, chip->mode & SB_MODE_CAPTURE_16 ? SB_DSP_DMA16_ON : SB_DSP_DMA8_ON);
 318                 chip->mode &= ~SB_RATE_LOCK_PLAYBACK;
 319                 break;
 320         default:
 321                 result = -EINVAL;
 322         }
 323         spin_unlock(&chip->reg_lock);
 324         return result;
 325 }
 326
 327 static int snd_sb16_capture_prepare(snd_pcm_substream_t * substream)
 328 {
 329         unsigned long flags;
 330         sb_t *chip = snd_pcm_substream_chip(substream);
 331         snd_pcm_runtime_t *runtime = substream->runtime;
 332         unsigned char format;
 333         unsigned int size, count, dma;
 334
 335         snd_sb16_csp_capture_prepare(chip, runtime);
 336         if (snd_pcm_format_unsigned(runtime->format) > 0) {
 337                 format = runtime->channels > 1 ? SB_DSP4_MODE_UNS_STEREO : SB_DSP4_MODE_UNS_MONO;
 338         } else {
 339                 format = runtime->channels > 1 ? SB_DSP4_MODE_SIGN_STEREO : SB_DSP4_MODE_SIGN_MONO;
 340         }
 341         snd_sb16_setup_rate(chip, runtime->rate, SNDRV_PCM_STREAM_CAPTURE);
 342         size = chip->c_dma_size = snd_pcm_lib_buffer_bytes(substream);
 343         dma = (chip->mode & SB_MODE_CAPTURE_8) ? chip->dma8 : chip->dma16;
 344         snd_dma_program(dma, runtime->dma_addr, size, DMA_MODE_READ | DMA_AUTOINIT);
 345
 346         count = snd_pcm_lib_period_bytes(substream);
 347         spin_lock_irqsave(&chip->reg_lock, flags);
 348         if (chip->mode & SB_MODE_CAPTURE_16) {
 349                 count >>= 1;
 350                 count--;
 351                 snd_sbdsp_command(chip, SB_DSP4_IN16_AI);
 352                 snd_sbdsp_command(chip, format);
 353                 snd_sbdsp_command(chip, count & 0xff);
 354                 snd_sbdsp_command(chip, count >> 8);
 355                 snd_sbdsp_command(chip, SB_DSP_DMA16_OFF);
 356         } else {
 357                 count--;
 358                 snd_sbdsp_command(chip, SB_DSP4_IN8_AI);
 359                 snd_sbdsp_command(chip, format);
 360                 snd_sbdsp_command(chip, count & 0xff);
 361                 snd_sbdsp_command(chip, count >> 8);
 362                 snd_sbdsp_command(chip, SB_DSP_DMA8_OFF);
 363         }
 364         spin_unlock_irqrestore(&chip->reg_lock, flags);
 365         return 0;
 366 }
 367
 368 static int snd_sb16_capture_trigger(snd_pcm_substream_t * substream,
 369                                     int cmd)
 370 {
 371         sb_t *chip = snd_pcm_substream_chip(substream);
 372         int result = 0;
 373
 374         spin_lock(&chip->reg_lock);
 375         switch (cmd) {
 376         case SNDRV_PCM_TRIGGER_START:
 377                 chip->mode |= SB_RATE_LOCK_CAPTURE;
 378                 snd_sbdsp_command(chip, chip->mode & SB_MODE_CAPTURE_16 ? SB_DSP_DMA16_ON : SB_DSP_DMA8_ON);
 379                 break;
 380         case SNDRV_PCM_TRIGGER_STOP:
 381                 snd_sbdsp_command(chip, chip->mode & SB_MODE_CAPTURE_16 ? SB_DSP_DMA16_OFF : SB_DSP_DMA8_OFF);
 382                 /* next two lines are needed for some types of DSP4 (SB AWE 32 - 4.13) */
 383                 if (chip->mode & SB_RATE_LOCK_PLAYBACK)
 384                         snd_sbdsp_command(chip, chip->mode & SB_MODE_PLAYBACK_16 ? SB_DSP_DMA16_ON : SB_DSP_DMA8_ON);
 385                 chip->mode &= ~SB_RATE_LOCK_CAPTURE;
 386                 break;
 387         default:
 388                 result = -EINVAL;
 389         }
 390         spin_unlock(&chip->reg_lock);
 391         return result;
 392 }
 393
 394 irqreturn_t snd_sb16dsp_interrupt(int irq, void *dev_id, struct pt_regs *regs)
 395 {
 396         sb_t *chip = dev_id;
 397         unsigned char status;
 398         int ok;
 399
 400         spin_lock(&chip->mixer_lock);
 401         status = snd_sbmixer_read(chip, SB_DSP4_IRQSTATUS);
 402         spin_unlock(&chip->mixer_lock);
 403         if ((status & SB_IRQTYPE_MPUIN) && chip->rmidi_callback)
 404                 chip->rmidi_callback(irq, chip->rmidi->private_data, regs);
 405         if (status & SB_IRQTYPE_8BIT) {
 406                 ok = 0;
 407                 if (chip->mode & SB_MODE_PLAYBACK_8) {
 408                         snd_pcm_period_elapsed(chip->playback_substream);
 409                         snd_sb16_csp_update(chip);
 410                         ok++;
 411                 }
 412                 if (chip->mode & SB_MODE_CAPTURE_8) {
 413                         snd_pcm_period_elapsed(chip->capture_substream);
 414                         ok++;
 415                 }
 416                 spin_lock(&chip->reg_lock);
 417                 if (!ok)
 418                         snd_sbdsp_command(chip, SB_DSP_DMA8_OFF);
 419                 snd_sb_ack_8bit(chip);
 420                 spin_unlock(&chip->reg_lock);
 421         }
 422         if (status & SB_IRQTYPE_16BIT) {
 423                 ok = 0;
 424                 if (chip->mode & SB_MODE_PLAYBACK_16) {
 425                         snd_pcm_period_elapsed(chip->playback_substream);
 426                         snd_sb16_csp_update(chip);
 427                         ok++;
 428                 }
 429                 if (chip->mode & SB_MODE_CAPTURE_16) {
 430                         snd_pcm_period_elapsed(chip->capture_substream);
 431                         ok++;
 432                 }
 433                 spin_lock(&chip->reg_lock);
 434                 if (!ok)
 435                         snd_sbdsp_command(chip, SB_DSP_DMA16_OFF);
 436                 snd_sb_ack_16bit(chip);
 437                 spin_unlock(&chip->reg_lock);
 438         }
 439         return IRQ_HANDLED;
 440 }
 441
 442 /*
 443
 444  */
 445
 446 static snd_pcm_uframes_t snd_sb16_playback_pointer(snd_pcm_substream_t * substream)
 447 {
 448         sb_t *chip = snd_pcm_substream_chip(substream);
 449         unsigned int dma;
 450         size_t ptr;
 451
 452         dma = (chip->mode & SB_MODE_PLAYBACK_8) ? chip->dma8 : chip->dma16;
 453         ptr = snd_dma_pointer(dma, chip->p_dma_size);
 454         return bytes_to_frames(substream->runtime, ptr);
 455 }
 456
 457 static snd_pcm_uframes_t snd_sb16_capture_pointer(snd_pcm_substream_t * substream)
 458 {
 459         sb_t *chip = snd_pcm_substream_chip(substream);
 460         unsigned int dma;
 461         size_t ptr;
 462
 463         dma = (chip->mode & SB_MODE_CAPTURE_8) ? chip->dma8 : chip->dma16;
 464         ptr = snd_dma_pointer(dma, chip->c_dma_size);
 465         return bytes_to_frames(substream->runtime, ptr);
 466 }
 467
 468 /*
 469
 470  */
 471
 472 static snd_pcm_hardware_t snd_sb16_playback =
 473 {
 474         .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
 475                                  SNDRV_PCM_INFO_MMAP_VALID),
 476         .formats =              0,
 477         .rates =                SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_44100,
 478         .rate_min =             4000,
 479         .rate_max =             44100,
 480         .channels_min =         1,
 481         .channels_max =         2,
 482         .buffer_bytes_max =     (128*1024),
 483         .period_bytes_min =     64,
 484         .period_bytes_max =     (128*1024),
 485         .periods_min =          1,
 486         .periods_max =          1024,
 487         .fifo_size =            0,
 488 };
 489
 490 static snd_pcm_hardware_t snd_sb16_capture =
 491 {
 492         .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
 493                                  SNDRV_PCM_INFO_MMAP_VALID),
 494         .formats =              0,
 495         .rates =                SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_44100,
 496         .rate_min =             4000,
 497         .rate_max =             44100,
 498         .channels_min =         1,
 499         .channels_max =         2,
 500         .buffer_bytes_max =     (128*1024),
 501         .period_bytes_min =     64,
 502         .period_bytes_max =     (128*1024),
 503         .periods_min =          1,
 504         .periods_max =          1024,
 505         .fifo_size =            0,
 506 };
 507
 508 /*
 509  *  open/close
 510  */
 511
 512 static int snd_sb16_playback_open(snd_pcm_substream_t * substream)
 513 {
 514         unsigned long flags;
 515         sb_t *chip = snd_pcm_substream_chip(substream);
 516         snd_pcm_runtime_t *runtime = substream->runtime;
 517
 518         spin_lock_irqsave(&chip->open_lock, flags);
 519         if (chip->mode & SB_MODE_PLAYBACK) {
 520                 spin_unlock_irqrestore(&chip->open_lock, flags);
 521                 return -EAGAIN;
 522         }
 523         runtime->hw = snd_sb16_playback;
 524
 525         /* skip if 16 bit DMA was reserved for capture */
 526         if (chip->force_mode16 & SB_MODE_CAPTURE_16)
 527                 goto __skip_16bit;
 528
 529         if (chip->dma16 >= 0 && !(chip->mode & SB_MODE_CAPTURE_16)) {
 530                 chip->mode |= SB_MODE_PLAYBACK_16;
 531                 runtime->hw.formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE;
 532                 /* Vibra16X hack */
 533                 if (chip->dma16 <= 3) {
 534                         runtime->hw.buffer_bytes_max =
 535                         runtime->hw.period_bytes_max = 64 * 1024;
 536                 } else {
 537                         snd_sb16_csp_playback_open(chip, runtime);
 538                 }
 539                 goto __open_ok;
 540         }
 541
 542       __skip_16bit:
 543         if (chip->dma8 >= 0 && !(chip->mode & SB_MODE_CAPTURE_8)) {
 544                 chip->mode |= SB_MODE_PLAYBACK_8;
 545                 /* DSP v 4.xx can transfer 16bit data through 8bit DMA channel, SBHWPG 2-7 */
 546                 if (chip->dma16 < 0) {
 547                         runtime->hw.formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE;
 548                         chip->mode |= SB_MODE_PLAYBACK_16;
 549                 } else {
 550                         runtime->hw.formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S8;
 551                 }
 552                 runtime->hw.buffer_bytes_max =
 553                 runtime->hw.period_bytes_max = 64 * 1024;
 554                 goto __open_ok;
 555         }
 556         spin_unlock_irqrestore(&chip->open_lock, flags);
 557         return -EAGAIN;
 558
 559       __open_ok:
 560         if (chip->hardware == SB_HW_ALS100)
 561                 runtime->hw.rate_max = 48000;
 562         if (chip->mode & SB_RATE_LOCK)
 563                 runtime->hw.rate_min = runtime->hw.rate_max = chip->locked_rate;
 564         chip->playback_substream = substream;
 565         spin_unlock_irqrestore(&chip->open_lock, flags);
 566         return 0;
 567 }
 568
 569 static int snd_sb16_playback_close(snd_pcm_substream_t * substream)
 570 {
 571         unsigned long flags;
 572         sb_t *chip = snd_pcm_substream_chip(substream);
 573
 574         snd_sb16_csp_playback_close(chip);
 575         spin_lock_irqsave(&chip->open_lock, flags);
 576         chip->playback_substream = NULL;
 577         chip->mode &= ~SB_MODE_PLAYBACK;
 578         spin_unlock_irqrestore(&chip->open_lock, flags);
 579         return 0;
 580 }
 581
 582 static int snd_sb16_capture_open(snd_pcm_substream_t * substream)
 583 {
 584         unsigned long flags;
 585         sb_t *chip = snd_pcm_substream_chip(substream);
 586         snd_pcm_runtime_t *runtime = substream->runtime;
 587
 588         spin_lock_irqsave(&chip->open_lock, flags);
 589         if (chip->mode & SB_MODE_CAPTURE) {
 590                 spin_unlock_irqrestore(&chip->open_lock, flags);
 591                 return -EAGAIN;
 592         }
 593         runtime->hw = snd_sb16_capture;
 594
 595         /* skip if 16 bit DMA was reserved for playback */
 596         if (chip->force_mode16 & SB_MODE_PLAYBACK_16)
 597                 goto __skip_16bit;
 598
 599         if (chip->dma16 >= 0 && !(chip->mode & SB_MODE_PLAYBACK_16)) {
 600                 chip->mode |= SB_MODE_CAPTURE_16;
 601                 runtime->hw.formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE;
 602                 /* Vibra16X hack */
 603                 if (chip->dma16 <= 3) {
 604                         runtime->hw.buffer_bytes_max =
 605                         runtime->hw.period_bytes_max = 64 * 1024;
 606                 } else {
 607                         snd_sb16_csp_capture_open(chip, runtime);
 608                 }
 609                 goto __open_ok;
 610         }
 611
 612       __skip_16bit:
 613         if (chip->dma8 >= 0 && !(chip->mode & SB_MODE_PLAYBACK_8)) {
 614                 chip->mode |= SB_MODE_CAPTURE_8;
 615                 /* DSP v 4.xx can transfer 16bit data through 8bit DMA channel, SBHWPG 2-7 */
 616                 if (chip->dma16 < 0) {
 617                         runtime->hw.formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE;
 618                         chip->mode |= SB_MODE_CAPTURE_16;
 619                 } else {
 620                         runtime->hw.formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S8;
 621                 }
 622                 runtime->hw.buffer_bytes_max =
 623                 runtime->hw.period_bytes_max = 64 * 1024;
 624                 goto __open_ok;
 625         }
 626         spin_unlock_irqrestore(&chip->open_lock, flags);
 627         return -EAGAIN;
 628
 629       __open_ok:
 630         if (chip->hardware == SB_HW_ALS100)
 631                 runtime->hw.rate_max = 48000;
 632         if (chip->mode & SB_RATE_LOCK)
 633                 runtime->hw.rate_min = runtime->hw.rate_max = chip->locked_rate;
 634         chip->capture_substream = substream;
 635         spin_unlock_irqrestore(&chip->open_lock, flags);
 636         return 0;
 637 }
 638
 639 static int snd_sb16_capture_close(snd_pcm_substream_t * substream)
 640 {
 641         unsigned long flags;
 642         sb_t *chip = snd_pcm_substream_chip(substream);
 643
 644         snd_sb16_csp_capture_close(chip);
 645         spin_lock_irqsave(&chip->open_lock, flags);
 646         chip->capture_substream = NULL;
 647         chip->mode &= ~SB_MODE_CAPTURE;
 648         spin_unlock_irqrestore(&chip->open_lock, flags);
 649         return 0;
 650 }
 651
 652 /*
 653  *  DMA control interface
 654  */
 655
 656 static int snd_sb16_set_dma_mode(sb_t *chip, int what)
 657 {
 658         if (chip->dma8 < 0 || chip->dma16 < 0) {
 659                 snd_assert(what == 0, return -EINVAL);
 660                 return 0;
 661         }
 662         if (what == 0) {
 663                 chip->force_mode16 = 0;
 664         } else if (what == 1) {
 665                 chip->force_mode16 = SB_MODE_PLAYBACK_16;
 666         } else if (what == 2) {
 667                 chip->force_mode16 = SB_MODE_CAPTURE_16;
 668         } else {
 669                 return -EINVAL;
 670         }
 671         return 0;
 672 }
 673
 674 static int snd_sb16_get_dma_mode(sb_t *chip)
 675 {
 676         if (chip->dma8 < 0 || chip->dma16 < 0)
 677                 return 0;
 678         switch (chip->force_mode16) {
 679         case SB_MODE_PLAYBACK_16:
 680                 return 1;
 681         case SB_MODE_CAPTURE_16:
 682                 return 2;
 683         default:
 684                 return 0;
 685         }
 686 }
 687
 688 static int snd_sb16_dma_control_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
 689 {
 690         static char *texts[3] = {
 691                 "Auto", "Playback", "Capture"
 692         };
 693
 694         uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
 695         uinfo->count = 1;
 696         uinfo->value.enumerated.items = 3;
 697         if (uinfo->value.enumerated.item > 2)
 698                 uinfo->value.enumerated.item = 2;
 699         strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
 700         return 0;
 701 }
 702
 703 static int snd_sb16_dma_control_get(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
 704 {
 705         sb_t *chip = snd_kcontrol_chip(kcontrol);
 706         unsigned long flags;
 707
 708         spin_lock_irqsave(&chip->reg_lock, flags);
 709         ucontrol->value.enumerated.item[0] = snd_sb16_get_dma_mode(chip);
 710         spin_unlock_irqrestore(&chip->reg_lock, flags);
 711         return 0;
 712 }
 713
 714 static int snd_sb16_dma_control_put(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
 715 {
 716         sb_t *chip = snd_kcontrol_chip(kcontrol);
 717         unsigned long flags;
 718         unsigned char nval, oval;
 719         int change;
 720
 721         if ((nval = ucontrol->value.enumerated.item[0]) > 2)
 722                 return -EINVAL;
 723         spin_lock_irqsave(&chip->reg_lock, flags);
 724         oval = snd_sb16_get_dma_mode(chip);
 725         change = nval != oval;
 726         snd_sb16_set_dma_mode(chip, nval);
 727         spin_unlock_irqrestore(&chip->reg_lock, flags);
 728         return change;
 729 }
 730
 731 static snd_kcontrol_new_t snd_sb16_dma_control = {
 732         .iface = SNDRV_CTL_ELEM_IFACE_CARD,
 733         .name = "16-bit DMA Allocation",
 734         .info = snd_sb16_dma_control_info,
 735         .get = snd_sb16_dma_control_get,
 736         .put = snd_sb16_dma_control_put
 737 };
 738
 739 /*
 740  *  Initialization part
 741  */
 742
 743 int snd_sb16dsp_configure(sb_t * chip)
 744 {
 745         unsigned long flags;
 746         unsigned char irqreg = 0, dmareg = 0, mpureg;
 747         unsigned char realirq, realdma, realmpureg;
 748         /* note: mpu register should be present only on SB16 Vibra soundcards */
 749
 750         // printk(KERN_DEBUG "codec->irq=%i, codec->dma8=%i, codec->dma16=%i\n", chip->irq, chip->dma8, chip->dma16);
 751         spin_lock_irqsave(&chip->mixer_lock, flags);
 752         mpureg = snd_sbmixer_read(chip, SB_DSP4_MPUSETUP) & ~0x06;
 753         spin_unlock_irqrestore(&chip->mixer_lock, flags);
 754         switch (chip->irq) {
 755         case 2:
 756         case 9:
 757                 irqreg |= SB_IRQSETUP_IRQ9;
 758                 break;
 759         case 5:
 760                 irqreg |= SB_IRQSETUP_IRQ5;
 761                 break;
 762         case 7:
 763                 irqreg |= SB_IRQSETUP_IRQ7;
 764                 break;
 765         case 10:
 766                 irqreg |= SB_IRQSETUP_IRQ10;
 767                 break;
 768         default:
 769                 return -EINVAL;
 770         }
 771         if (chip->dma8 >= 0) {
 772                 switch (chip->dma8) {
 773                 case 0:
 774                         dmareg |= SB_DMASETUP_DMA0;
 775                         break;
 776                 case 1:
 777                         dmareg |= SB_DMASETUP_DMA1;
 778                         break;
 779                 case 3:
 780                         dmareg |= SB_DMASETUP_DMA3;
 781                         break;
 782                 default:
 783                         return -EINVAL;
 784                 }
 785         }
 786         if (chip->dma16 >= 0 && chip->dma16 != chip->dma8) {
 787                 switch (chip->dma16) {
 788                 case 5:
 789                         dmareg |= SB_DMASETUP_DMA5;
 790                         break;
 791                 case 6:
 792                         dmareg |= SB_DMASETUP_DMA6;
 793                         break;
 794                 case 7:
 795                         dmareg |= SB_DMASETUP_DMA7;
 796                         break;
 797                 default:
 798                         return -EINVAL;
 799                 }
 800         }
 801         switch (chip->mpu_port) {
 802         case 0x300:
 803                 mpureg |= 0x04;
 804                 break;
 805         case 0x330:
 806                 mpureg |= 0x00;
 807                 break;
 808         default:
 809                 mpureg |= 0x02; /* disable MPU */
 810         }
 811         spin_lock_irqsave(&chip->mixer_lock, flags);
 812
 813         snd_sbmixer_write(chip, SB_DSP4_IRQSETUP, irqreg);
 814         realirq = snd_sbmixer_read(chip, SB_DSP4_IRQSETUP);
 815
 816         snd_sbmixer_write(chip, SB_DSP4_DMASETUP, dmareg);
 817         realdma = snd_sbmixer_read(chip, SB_DSP4_DMASETUP);
 818
 819         snd_sbmixer_write(chip, SB_DSP4_MPUSETUP, mpureg);
 820         realmpureg = snd_sbmixer_read(chip, SB_DSP4_MPUSETUP);
 821
 822         spin_unlock_irqrestore(&chip->mixer_lock, flags);
 823         if ((~realirq) & irqreg || (~realdma) & dmareg) {
 824                 snd_printk(KERN_ERR "SB16 [0x%lx]: unable to set DMA & IRQ (PnP device?)\n", chip->port);
 825                 snd_printk(KERN_ERR "SB16 [0x%lx]: wanted: irqreg=0x%x, dmareg=0x%x, mpureg = 0x%x\n", chip->port, realirq, realdma, realmpureg);
 826                 snd_printk(KERN_ERR "SB16 [0x%lx]:    got: irqreg=0x%x, dmareg=0x%x, mpureg = 0x%x\n", chip->port, irqreg, dmareg, mpureg);
 827                 return -ENODEV;
 828         }
 829         return 0;
 830 }
 831
 832 static snd_pcm_ops_t snd_sb16_playback_ops = {
 833         .open =         snd_sb16_playback_open,
 834         .close =        snd_sb16_playback_close,
 835         .ioctl =        snd_pcm_lib_ioctl,
 836         .hw_params =    snd_sb16_hw_params,
 837         .hw_free =      snd_sb16_hw_free,
 838         .prepare =      snd_sb16_playback_prepare,
 839         .trigger =      snd_sb16_playback_trigger,
 840         .pointer =      snd_sb16_playback_pointer,
 841 };
 842
 843 static snd_pcm_ops_t snd_sb16_capture_ops = {
 844         .open =         snd_sb16_capture_open,
 845         .close =        snd_sb16_capture_close,
 846         .ioctl =        snd_pcm_lib_ioctl,
 847         .hw_params =    snd_sb16_hw_params,
 848         .hw_free =      snd_sb16_hw_free,
 849         .prepare =      snd_sb16_capture_prepare,
 850         .trigger =      snd_sb16_capture_trigger,
 851         .pointer =      snd_sb16_capture_pointer,
 852 };
 853
 854 static void snd_sb16dsp_pcm_free(snd_pcm_t *pcm)
 855 {
 856         snd_pcm_lib_preallocate_free_for_all(pcm);
 857 }
 858
 859 int snd_sb16dsp_pcm(sb_t * chip, int device, snd_pcm_t ** rpcm)
 860 {
 861         snd_card_t *card = chip->card;
 862         snd_pcm_t *pcm;
 863         int err;
 864
 865         if (rpcm)
 866                 *rpcm = NULL;
 867         if ((err = snd_pcm_new(card, "SB16 DSP", device, 1, 1, &pcm)) < 0)
 868                 return err;
 869         sprintf(pcm->name, "DSP v%i.%i", chip->version >> 8, chip->version & 0xff);
 870         pcm->info_flags = SNDRV_PCM_INFO_JOINT_DUPLEX;
 871         pcm->private_data = chip;
 872         pcm->private_free = snd_sb16dsp_pcm_free;
 873
 874         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_sb16_playback_ops);
 875         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_sb16_capture_ops);
 876
 877         if (chip->dma16 >= 0 && chip->dma8 != chip->dma16)
 878                 snd_ctl_add(card, snd_ctl_new1(&snd_sb16_dma_control, chip));
 879         else
 880                 pcm->info_flags = SNDRV_PCM_INFO_HALF_DUPLEX;
 881
 882         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
 883                                               snd_dma_isa_data(),
 884                                               64*1024, 128*1024);
 885
 886         if (rpcm)
 887                 *rpcm = pcm;
 888         return 0;
 889 }
 890
 891 const snd_pcm_ops_t *snd_sb16dsp_get_pcm_ops(int direction)
 892 {
 893         return direction == SNDRV_PCM_STREAM_PLAYBACK ?
 894                 &snd_sb16_playback_ops : &snd_sb16_capture_ops;
 895 }
 896
 897 EXPORT_SYMBOL(snd_sb16dsp_pcm);
 898 EXPORT_SYMBOL(snd_sb16dsp_get_pcm_ops);
 899 EXPORT_SYMBOL(snd_sb16dsp_configure);
 900 EXPORT_SYMBOL(snd_sb16dsp_interrupt);
 901
 902 /*
 903  *  INIT part
 904  */
 905
 906 static int __init alsa_sb16_init(void)
 907 {
 908         return 0;
 909 }
 910
 911 static void __exit alsa_sb16_exit(void)
 912 {
 913 }
 914
 915 module_init(alsa_sb16_init)
 916 module_exit(alsa_sb16_exit)