sound/pci/au88x0/au88x0_pcm.c

   1 /*
   2  *  This program is free software; you can redistribute it and/or modify
   3  *  it under the terms of the GNU General Public License as published by
   4  *  the Free Software Foundation; either version 2 of the License, or
   5  *  (at your option) any later version.
   6  *
   7  *  This program is distributed in the hope that it will be useful,
   8  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
   9  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  10  *  GNU Library General Public License for more details.
  11  *
  12  *  You should have received a copy of the GNU General Public License
  13  *  along with this program; if not, write to the Free Software
  14  *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  15  */
  16
  17 /*
  18  * Vortex PCM ALSA driver.
  19  *
  20  * Supports ADB and WT DMA. Unfortunately, WT channels do not run yet.
  21  * It remains stuck,and DMA transfers do not happen.
  22  */
  23
  24 #include <sound/driver.h>
  25 #include <linux/time.h>
  26 #include <sound/core.h>
  27 #include <sound/pcm.h>
  28 #include <sound/pcm_params.h>
  29 #include "au88x0.h"
  30
  31 #define VORTEX_PCM_TYPE(x) (x->name[40])
  32
  33 /* hardware definition */
  34 static snd_pcm_hardware_t snd_vortex_playback_hw_adb = {
  35         .info =
  36             (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_RESUME |
  37              SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_INTERLEAVED |
  38              SNDRV_PCM_INFO_MMAP_VALID),
  39         .formats =
  40             SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U8 |
  41             SNDRV_PCM_FMTBIT_MU_LAW | SNDRV_PCM_FMTBIT_A_LAW,
  42         .rates = SNDRV_PCM_RATE_CONTINUOUS,
  43         .rate_min = 5000,
  44         .rate_max = 48000,
  45         .channels_min = 1,
  46 #ifdef CHIP_AU8830
  47         .channels_max = 4,
  48 #else
  49         .channels_max = 2,
  50 #endif
  51         .buffer_bytes_max = 0x10000,
  52         .period_bytes_min = 0x1,
  53         .period_bytes_max = 0x1000,
  54         .periods_min = 2,
  55         .periods_max = 32,
  56 };
  57
  58 #ifndef CHIP_AU8820
  59 static snd_pcm_hardware_t snd_vortex_playback_hw_a3d = {
  60         .info =
  61             (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_RESUME |
  62              SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_INTERLEAVED |
  63              SNDRV_PCM_INFO_MMAP_VALID),
  64         .formats =
  65             SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U8 |
  66             SNDRV_PCM_FMTBIT_MU_LAW | SNDRV_PCM_FMTBIT_A_LAW,
  67         .rates = SNDRV_PCM_RATE_CONTINUOUS,
  68         .rate_min = 5000,
  69         .rate_max = 48000,
  70         .channels_min = 1,
  71         .channels_max = 1,
  72         .buffer_bytes_max = 0x10000,
  73         .period_bytes_min = 0x100,
  74         .period_bytes_max = 0x1000,
  75         .periods_min = 2,
  76         .periods_max = 64,
  77 };
  78 #endif
  79 static snd_pcm_hardware_t snd_vortex_playback_hw_spdif = {
  80         .info =
  81             (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_RESUME |
  82              SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_INTERLEAVED |
  83              SNDRV_PCM_INFO_MMAP_VALID),
  84         .formats =
  85             SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U8 |
  86             SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE | SNDRV_PCM_FMTBIT_MU_LAW |
  87             SNDRV_PCM_FMTBIT_A_LAW,
  88         .rates =
  89             SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000,
  90         .rate_min = 32000,
  91         .rate_max = 48000,
  92         .channels_min = 1,
  93         .channels_max = 2,
  94         .buffer_bytes_max = 0x10000,
  95         .period_bytes_min = 0x100,
  96         .period_bytes_max = 0x1000,
  97         .periods_min = 2,
  98         .periods_max = 64,
  99 };
 100
 101 #ifndef CHIP_AU8810
 102 static snd_pcm_hardware_t snd_vortex_playback_hw_wt = {
 103         .info = (SNDRV_PCM_INFO_MMAP |
 104                  SNDRV_PCM_INFO_INTERLEAVED |
 105                  SNDRV_PCM_INFO_BLOCK_TRANSFER | SNDRV_PCM_INFO_MMAP_VALID),
 106         .formats = SNDRV_PCM_FMTBIT_S16_LE,
 107         .rates = SNDRV_PCM_RATE_8000_48000 | SNDRV_PCM_RATE_CONTINUOUS, // SNDRV_PCM_RATE_48000,
 108         .rate_min = 8000,
 109         .rate_max = 48000,
 110         .channels_min = 1,
 111         .channels_max = 2,
 112         .buffer_bytes_max = 0x10000,
 113         .period_bytes_min = 0x0400,
 114         .period_bytes_max = 0x1000,
 115         .periods_min = 2,
 116         .periods_max = 64,
 117 };
 118 #endif
 119 /* open callback */
 120 static int snd_vortex_pcm_open(snd_pcm_substream_t * substream)
 121 {
 122         vortex_t *vortex = snd_pcm_substream_chip(substream);
 123         snd_pcm_runtime_t *runtime = substream->runtime;
 124         int err;
 125
 126         /* Force equal size periods */
 127         if ((err =
 128              snd_pcm_hw_constraint_integer(runtime,
 129                                            SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
 130                 return err;
 131         /* Avoid PAGE_SIZE boundary to fall inside of a period. */
 132         if ((err =
 133              snd_pcm_hw_constraint_pow2(runtime, 0,
 134                                         SNDRV_PCM_HW_PARAM_PERIOD_BYTES)) < 0)
 135                 return err;
 136
 137         if (VORTEX_PCM_TYPE(substream->pcm) != VORTEX_PCM_WT) {
 138 #ifndef CHIP_AU8820
 139                 if (VORTEX_PCM_TYPE(substream->pcm) == VORTEX_PCM_A3D) {
 140                         runtime->hw = snd_vortex_playback_hw_a3d;
 141                 }
 142 #endif
 143                 if (VORTEX_PCM_TYPE(substream->pcm) == VORTEX_PCM_SPDIF) {
 144                         runtime->hw = snd_vortex_playback_hw_spdif;
 145                         switch (vortex->spdif_sr) {
 146                         case 32000:
 147                                 runtime->hw.rates = SNDRV_PCM_RATE_32000;
 148                                 break;
 149                         case 44100:
 150                                 runtime->hw.rates = SNDRV_PCM_RATE_44100;
 151                                 break;
 152                         case 48000:
 153                                 runtime->hw.rates = SNDRV_PCM_RATE_48000;
 154                                 break;
 155                         }
 156                 }
 157                 if (VORTEX_PCM_TYPE(substream->pcm) == VORTEX_PCM_ADB
 158                     || VORTEX_PCM_TYPE(substream->pcm) == VORTEX_PCM_I2S)
 159                         runtime->hw = snd_vortex_playback_hw_adb;
 160                 substream->runtime->private_data = NULL;
 161         }
 162 #ifndef CHIP_AU8810
 163         else {
 164                 runtime->hw = snd_vortex_playback_hw_wt;
 165                 substream->runtime->private_data = NULL;
 166         }
 167 #endif
 168         return 0;
 169 }
 170
 171 /* close callback */
 172 static int snd_vortex_pcm_close(snd_pcm_substream_t * substream)
 173 {
 174         //vortex_t *chip = snd_pcm_substream_chip(substream);
 175         stream_t *stream = (stream_t *) substream->runtime->private_data;
 176
 177         // the hardware-specific codes will be here
 178         if (stream != NULL) {
 179                 stream->substream = NULL;
 180                 stream->nr_ch = 0;
 181         }
 182         substream->runtime->private_data = NULL;
 183         return 0;
 184 }
 185
 186 /* hw_params callback */
 187 static int
 188 snd_vortex_pcm_hw_params(snd_pcm_substream_t * substream,
 189                          snd_pcm_hw_params_t * hw_params)
 190 {
 191         vortex_t *chip = snd_pcm_substream_chip(substream);
 192         stream_t *stream = (stream_t *) (substream->runtime->private_data);
 193         snd_pcm_sgbuf_t *sgbuf;
 194         int err;
 195
 196         // Alloc buffer memory.
 197         err =
 198             snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
 199         if (err < 0) {
 200                 printk(KERN_ERR "Vortex: pcm page alloc failed!\n");
 201                 return err;
 202         }
 203         //sgbuf = (snd_pcm_sgbuf_t *) substream->runtime->dma_private;
 204         sgbuf = snd_pcm_substream_sgbuf(substream);
 205         /*
 206            printk(KERN_INFO "Vortex: periods %d, period_bytes %d, channels = %d\n", params_periods(hw_params),
 207            params_period_bytes(hw_params), params_channels(hw_params));
 208          */
 209         // Make audio routes and config buffer DMA.
 210         if (VORTEX_PCM_TYPE(substream->pcm) != VORTEX_PCM_WT) {
 211                 int dma, type = VORTEX_PCM_TYPE(substream->pcm);
 212                 /* Dealloc any routes. */
 213                 if (stream != NULL)
 214                         vortex_adb_allocroute(chip, stream->dma,
 215                                               stream->nr_ch, stream->dir,
 216                                               stream->type);
 217                 /* Alloc routes. */
 218                 dma =
 219                     vortex_adb_allocroute(chip, -1,
 220                                           params_channels(hw_params),
 221                                           substream->stream, type);
 222                 if (dma < 0)
 223                         return dma;
 224                 stream = substream->runtime->private_data = &chip->dma_adb[dma];
 225                 stream->substream = substream;
 226                 /* Setup Buffers. */
 227                 vortex_adbdma_setbuffers(chip, dma, sgbuf,
 228                                          params_period_bytes(hw_params),
 229                                          params_periods(hw_params));
 230         }
 231 #ifndef CHIP_AU8810
 232         else {
 233                 /* if (stream != NULL)
 234                    vortex_wt_allocroute(chip, substream->number, 0); */
 235                 vortex_wt_allocroute(chip, substream->number,
 236                                      params_channels(hw_params));
 237                 stream = substream->runtime->private_data =
 238                     &chip->dma_wt[substream->number];
 239                 stream->dma = substream->number;
 240                 stream->substream = substream;
 241                 vortex_wtdma_setbuffers(chip, substream->number, sgbuf,
 242                                         params_period_bytes(hw_params),
 243                                         params_periods(hw_params));
 244         }
 245 #endif
 246         return 0;
 247 }
 248
 249 /* hw_free callback */
 250 static int snd_vortex_pcm_hw_free(snd_pcm_substream_t * substream)
 251 {
 252         vortex_t *chip = snd_pcm_substream_chip(substream);
 253         stream_t *stream = (stream_t *) (substream->runtime->private_data);
 254
 255         // Delete audio routes.
 256         if (VORTEX_PCM_TYPE(substream->pcm) != VORTEX_PCM_WT) {
 257                 if (stream != NULL)
 258                         vortex_adb_allocroute(chip, stream->dma,
 259                                               stream->nr_ch, stream->dir,
 260                                               stream->type);
 261         }
 262 #ifndef CHIP_AU8810
 263         else {
 264                 if (stream != NULL)
 265                         vortex_wt_allocroute(chip, stream->dma, 0);
 266         }
 267 #endif
 268         substream->runtime->private_data = NULL;
 269
 270         return snd_pcm_lib_free_pages(substream);
 271 }
 272
 273 /* prepare callback */
 274 static int snd_vortex_pcm_prepare(snd_pcm_substream_t * substream)
 275 {
 276         vortex_t *chip = snd_pcm_substream_chip(substream);
 277         snd_pcm_runtime_t *runtime = substream->runtime;
 278         stream_t *stream = (stream_t *) substream->runtime->private_data;
 279         int dma = stream->dma, fmt, dir;
 280
 281         // set up the hardware with the current configuration.
 282         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
 283                 dir = 1;
 284         else
 285                 dir = 0;
 286         fmt = vortex_alsafmt_aspfmt(runtime->format);
 287         if (VORTEX_PCM_TYPE(substream->pcm) != VORTEX_PCM_WT) {
 288                 vortex_adbdma_setmode(chip, dma, 1, dir, fmt, 0 /*? */ ,
 289                                       0);
 290                 vortex_adbdma_setstartbuffer(chip, dma, 0);
 291                 if (VORTEX_PCM_TYPE(substream->pcm) != VORTEX_PCM_SPDIF)
 292                         vortex_adb_setsrc(chip, dma, runtime->rate, dir);
 293         }
 294 #ifndef CHIP_AU8810
 295         else {
 296                 vortex_wtdma_setmode(chip, dma, 1, fmt, 0, 0);
 297                 // FIXME: Set rate (i guess using vortex_wt_writereg() somehow).
 298                 vortex_wtdma_setstartbuffer(chip, dma, 0);
 299         }
 300 #endif
 301         return 0;
 302 }
 303
 304 /* trigger callback */
 305 static int snd_vortex_pcm_trigger(snd_pcm_substream_t * substream, int cmd)
 306 {
 307         vortex_t *chip = snd_pcm_substream_chip(substream);
 308         stream_t *stream = (stream_t *) substream->runtime->private_data;
 309         int dma = stream->dma;
 310
 311         switch (cmd) {
 312         case SNDRV_PCM_TRIGGER_START:
 313                 // do something to start the PCM engine
 314                 //printk(KERN_INFO "vortex: start %d\n", dma);
 315                 stream->fifo_enabled = 1;
 316                 if (VORTEX_PCM_TYPE(substream->pcm) != VORTEX_PCM_WT)
 317                         vortex_adbdma_startfifo(chip, dma);
 318 #ifndef CHIP_AU8810
 319                 else {
 320                         printk(KERN_INFO "vortex: wt start %d\n", dma);
 321                         vortex_wtdma_startfifo(chip, dma);
 322                 }
 323 #endif
 324                 break;
 325         case SNDRV_PCM_TRIGGER_STOP:
 326                 // do something to stop the PCM engine
 327                 //printk(KERN_INFO "vortex: stop %d\n", dma);
 328                 stream->fifo_enabled = 0;
 329                 if (VORTEX_PCM_TYPE(substream->pcm) != VORTEX_PCM_WT)
 330                         vortex_adbdma_pausefifo(chip, dma);
 331                 //vortex_adbdma_stopfifo(chip, dma);
 332 #ifndef CHIP_AU8810
 333                 else {
 334                         printk(KERN_INFO "vortex: wt stop %d\n", dma);
 335                         vortex_wtdma_stopfifo(chip, dma);
 336                 }
 337 #endif
 338                 break;
 339         case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
 340                 //printk(KERN_INFO "vortex: pause %d\n", dma);
 341                 if (VORTEX_PCM_TYPE(substream->pcm) != VORTEX_PCM_WT)
 342                         vortex_adbdma_pausefifo(chip, dma);
 343 #ifndef CHIP_AU8810
 344                 else
 345                         vortex_wtdma_pausefifo(chip, dma);
 346 #endif
 347                 break;
 348         case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
 349                 //printk(KERN_INFO "vortex: resume %d\n", dma);
 350                 if (VORTEX_PCM_TYPE(substream->pcm) != VORTEX_PCM_WT)
 351                         vortex_adbdma_resumefifo(chip, dma);
 352 #ifndef CHIP_AU8810
 353                 else
 354                         vortex_wtdma_resumefifo(chip, dma);
 355 #endif
 356                 break;
 357         default:
 358                 return -EINVAL;
 359         }
 360         return 0;
 361 }
 362
 363 /* pointer callback */
 364 static snd_pcm_uframes_t snd_vortex_pcm_pointer(snd_pcm_substream_t * substream)
 365 {
 366         vortex_t *chip = snd_pcm_substream_chip(substream);
 367         stream_t *stream = (stream_t *) substream->runtime->private_data;
 368         int dma = stream->dma;
 369         snd_pcm_uframes_t current_ptr = 0;
 370
 371         spin_lock(&chip->lock);
 372         if (VORTEX_PCM_TYPE(substream->pcm) != VORTEX_PCM_WT)
 373                 current_ptr = vortex_adbdma_getlinearpos(chip, dma);
 374 #ifndef CHIP_AU8810
 375         else
 376                 current_ptr = vortex_wtdma_getlinearpos(chip, dma);
 377 #endif
 378         //printk(KERN_INFO "vortex: pointer = 0x%x\n", current_ptr);
 379         spin_unlock(&chip->lock);
 380         return (bytes_to_frames(substream->runtime, current_ptr));
 381 }
 382
 383 /* Page callback. */
 384 /*
 385 static struct page *snd_pcm_sgbuf_ops_page(snd_pcm_substream_t *substream, unsigned long offset) {
 386
 387
 388 }
 389 */
 390 /* operators */
 391 static snd_pcm_ops_t snd_vortex_playback_ops = {
 392         .open = snd_vortex_pcm_open,
 393         .close = snd_vortex_pcm_close,
 394         .ioctl = snd_pcm_lib_ioctl,
 395         .hw_params = snd_vortex_pcm_hw_params,
 396         .hw_free = snd_vortex_pcm_hw_free,
 397         .prepare = snd_vortex_pcm_prepare,
 398         .trigger = snd_vortex_pcm_trigger,
 399         .pointer = snd_vortex_pcm_pointer,
 400         .page = snd_pcm_sgbuf_ops_page,
 401 };
 402
 403 /*
 404 *  definitions of capture are omitted here...
 405 */
 406
 407 static char *vortex_pcm_prettyname[VORTEX_PCM_LAST] = {
 408         "AU88x0 ADB",
 409         "AU88x0 SPDIF",
 410         "AU88x0 A3D",
 411         "AU88x0 WT",
 412         "AU88x0 I2S",
 413 };
 414 static char *vortex_pcm_name[VORTEX_PCM_LAST] = {
 415         "adb",
 416         "spdif",
 417         "a3d",
 418         "wt",
 419         "i2s",
 420 };
 421
 422 /* SPDIF kcontrol */
 423 static int
 424 snd_vortex_spdif_info(snd_kcontrol_t * kcontrol, snd_ctl_elem_info_t * uinfo)
 425 {
 426         static char *texts[] = { "32000", "44100", "48000" };
 427
 428         uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
 429         uinfo->count = 1;
 430         uinfo->value.enumerated.items = 3;
 431         if (uinfo->value.enumerated.item >= uinfo->value.enumerated.items)
 432                 uinfo->value.enumerated.item =
 433                     uinfo->value.enumerated.items - 1;
 434         strcpy(uinfo->value.enumerated.name,
 435                texts[uinfo->value.enumerated.item]);
 436         return 0;
 437 }
 438 static int
 439 snd_vortex_spdif_get(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
 440 {
 441         vortex_t *vortex = snd_kcontrol_chip(kcontrol);
 442
 443         if (vortex->spdif_sr == 32000)
 444                 ucontrol->value.enumerated.item[0] = 0;
 445         if (vortex->spdif_sr == 44100)
 446                 ucontrol->value.enumerated.item[0] = 1;
 447         if (vortex->spdif_sr == 48000)
 448                 ucontrol->value.enumerated.item[0] = 2;
 449         return 0;
 450 }
 451 static int
 452 snd_vortex_spdif_put(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
 453 {
 454         vortex_t *vortex = snd_kcontrol_chip(kcontrol);
 455         static unsigned int sr[3] = { 32000, 44100, 48000 };
 456
 457         //printk("vortex: spdif sr = %d\n", ucontrol->value.enumerated.item[0]);
 458         vortex->spdif_sr = sr[ucontrol->value.enumerated.item[0] % 3];
 459         vortex_spdif_init(vortex,
 460                           sr[ucontrol->value.enumerated.item[0] % 3], 1);
 461         return 1;
 462 }
 463 static snd_kcontrol_new_t vortex_spdif_kcontrol __devinitdata = {
 464         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 465         .name = "SPDIF SR",
 466         .index = 0,
 467         .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
 468         .private_value = 0,
 469         .info = snd_vortex_spdif_info,
 470         .get = snd_vortex_spdif_get,
 471         .put = snd_vortex_spdif_put
 472 };
 473
 474 /* create a pcm device */
 475 static int __devinit snd_vortex_new_pcm(vortex_t * chip, int idx, int nr)
 476 {
 477         snd_pcm_t *pcm;
 478         int err, nr_capt;
 479
 480         if ((chip == 0) || (idx < 0) || (idx > VORTEX_PCM_LAST))
 481                 return -ENODEV;
 482
 483         /* idx indicates which kind of PCM device. ADB, SPDIF, I2S and A3D share the
 484          * same dma engine. WT uses it own separate dma engine whcih cant capture. */
 485         if (idx == VORTEX_PCM_ADB)
 486                 nr_capt = nr;
 487         else
 488                 nr_capt = 0;
 489         if ((err =
 490              snd_pcm_new(chip->card, vortex_pcm_prettyname[idx], idx, nr,
 491                          nr_capt, &pcm)) < 0)
 492                 return err;
 493         strcpy(pcm->name, vortex_pcm_name[idx]);
 494         chip->pcm[idx] = pcm;
 495         // This is an evil hack, but it saves a lot of duplicated code.
 496         VORTEX_PCM_TYPE(pcm) = idx;
 497         pcm->private_data = chip;
 498         /* set operators */
 499         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK,
 500                         &snd_vortex_playback_ops);
 501         if (idx == VORTEX_PCM_ADB)
 502                 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE,
 503                                 &snd_vortex_playback_ops);
 504
 505         /* pre-allocation of Scatter-Gather buffers */
 506
 507         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
 508                                               snd_dma_pci_data(chip->pci_dev),
 509                                               0x10000, 0x10000);
 510
 511         if (VORTEX_PCM_TYPE(pcm) == VORTEX_PCM_SPDIF) {
 512                 snd_kcontrol_t *kcontrol;
 513
 514                 if ((kcontrol =
 515                      snd_ctl_new1(&vortex_spdif_kcontrol, chip)) == NULL)
 516                         return -ENOMEM;
 517                 if ((err = snd_ctl_add(chip->card, kcontrol)) < 0)
 518                         return err;
 519         }
 520         return 0;
 521 }