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