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 chip_t vortex_t
  32 #define VORTEX_PCM_TYPE(x) (x->name[40])
  33
  34 /* hardware definition */
  35 static snd_pcm_hardware_t snd_vortex_playback_hw_adb = {
  36         .info =
  37             (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_RESUME |
  38              SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_INTERLEAVED |
  39              SNDRV_PCM_INFO_MMAP_VALID),
  40         .formats =
  41             SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U8 |
  42             SNDRV_PCM_FMTBIT_MU_LAW | SNDRV_PCM_FMTBIT_A_LAW,
  43         .rates = SNDRV_PCM_RATE_CONTINUOUS,
  44         .rate_min = 5000,
  45         .rate_max = 48000,
  46         .channels_min = 1,
  47 #ifdef CHIP_AU8830
  48         .channels_max = 4,
  49 #else
  50         .channels_max = 2,
  51 #endif
  52         .buffer_bytes_max = 0x10000,
  53         .period_bytes_min = 0x1,
  54         .period_bytes_max = 0x1000,
  55         .periods_min = 2,
  56         .periods_max = 32,
  57 };
  58
  59 #ifndef CHIP_AU8820
  60 static snd_pcm_hardware_t snd_vortex_playback_hw_a3d = {
  61         .info =
  62             (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_RESUME |
  63              SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_INTERLEAVED |
  64              SNDRV_PCM_INFO_MMAP_VALID),
  65         .formats =
  66             SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U8 |
  67             SNDRV_PCM_FMTBIT_MU_LAW | SNDRV_PCM_FMTBIT_A_LAW,
  68         .rates = SNDRV_PCM_RATE_CONTINUOUS,
  69         .rate_min = 5000,
  70         .rate_max = 48000,
  71         .channels_min = 1,
  72         .channels_max = 1,
  73         .buffer_bytes_max = 0x10000,
  74         .period_bytes_min = 0x100,
  75         .period_bytes_max = 0x1000,
  76         .periods_min = 2,
  77         .periods_max = 64,
  78 };
  79 #endif
  80 static snd_pcm_hardware_t snd_vortex_playback_hw_spdif = {
  81         .info =
  82             (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_RESUME |
  83              SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_INTERLEAVED |
  84              SNDRV_PCM_INFO_MMAP_VALID),
  85         .formats =
  86             SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U8 |
  87             SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE | SNDRV_PCM_FMTBIT_MU_LAW |
  88             SNDRV_PCM_FMTBIT_A_LAW,
  89         .rates =
  90             SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000,
  91         .rate_min = 32000,
  92         .rate_max = 48000,
  93         .channels_min = 1,
  94         .channels_max = 2,
  95         .buffer_bytes_max = 0x10000,
  96         .period_bytes_min = 0x100,
  97         .period_bytes_max = 0x1000,
  98         .periods_min = 2,
  99         .periods_max = 64,
 100 };
 101
 102 #ifndef CHIP_AU8810
 103 static snd_pcm_hardware_t snd_vortex_playback_hw_wt = {
 104         .info = (SNDRV_PCM_INFO_MMAP |
 105                  SNDRV_PCM_INFO_INTERLEAVED |
 106                  SNDRV_PCM_INFO_BLOCK_TRANSFER | SNDRV_PCM_INFO_MMAP_VALID),
 107         .formats = SNDRV_PCM_FMTBIT_S16_LE,
 108         .rates = SNDRV_PCM_RATE_8000_48000 | SNDRV_PCM_RATE_CONTINUOUS, // SNDRV_PCM_RATE_48000,
 109         .rate_min = 8000,
 110         .rate_max = 48000,
 111         .channels_min = 1,
 112         .channels_max = 2,
 113         .buffer_bytes_max = 0x10000,
 114         .period_bytes_min = 0x0400,
 115         .period_bytes_max = 0x1000,
 116         .periods_min = 2,
 117         .periods_max = 64,
 118 };
 119 #endif
 120 /* open callback */
 121 static int snd_vortex_pcm_open(snd_pcm_substream_t * substream)
 122 {
 123         vortex_t *vortex = snd_pcm_substream_chip(substream);
 124         snd_pcm_runtime_t *runtime = substream->runtime;
 125         int err;
 126
 127         /* Force equal size periods */
 128         if ((err =
 129              snd_pcm_hw_constraint_integer(runtime,
 130                                            SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
 131                 return err;
 132         /* Avoid PAGE_SIZE boundary to fall inside of a period. */
 133         if ((err =
 134              snd_pcm_hw_constraint_pow2(runtime, 0,
 135                                         SNDRV_PCM_HW_PARAM_PERIOD_BYTES)) < 0)
 136                 return err;
 137
 138         if (VORTEX_PCM_TYPE(substream->pcm) != VORTEX_PCM_WT) {
 139 #ifndef CHIP_AU8820
 140                 if (VORTEX_PCM_TYPE(substream->pcm) == VORTEX_PCM_A3D) {
 141                         runtime->hw = snd_vortex_playback_hw_a3d;
 142                 }
 143 #endif
 144                 if (VORTEX_PCM_TYPE(substream->pcm) == VORTEX_PCM_SPDIF) {
 145                         runtime->hw = snd_vortex_playback_hw_spdif;
 146                         switch (vortex->spdif_sr) {
 147                         case 32000:
 148                                 runtime->hw.rates = SNDRV_PCM_RATE_32000;
 149                                 break;
 150                         case 44100:
 151                                 runtime->hw.rates = SNDRV_PCM_RATE_44100;
 152                                 break;
 153                         case 48000:
 154                                 runtime->hw.rates = SNDRV_PCM_RATE_48000;
 155                                 break;
 156                         }
 157                 }
 158                 if (VORTEX_PCM_TYPE(substream->pcm) == VORTEX_PCM_ADB
 159                     || VORTEX_PCM_TYPE(substream->pcm) == VORTEX_PCM_I2S)
 160                         runtime->hw = snd_vortex_playback_hw_adb;
 161                 substream->runtime->private_data = NULL;
 162         }
 163 #ifndef CHIP_AU8810
 164         else {
 165                 runtime->hw = snd_vortex_playback_hw_wt;
 166                 substream->runtime->private_data = NULL;
 167         }
 168 #endif
 169         return 0;
 170 }
 171
 172 /* close callback */
 173 static int snd_vortex_pcm_close(snd_pcm_substream_t * substream)
 174 {
 175         //vortex_t *chip = snd_pcm_substream_chip(substream);
 176         stream_t *stream = (stream_t *) substream->runtime->private_data;
 177
 178         // the hardware-specific codes will be here
 179         if (stream != NULL) {
 180                 stream->substream = NULL;
 181                 stream->nr_ch = 0;
 182         }
 183         substream->runtime->private_data = NULL;
 184         return 0;
 185 }
 186
 187 /* hw_params callback */
 188 static int
 189 snd_vortex_pcm_hw_params(snd_pcm_substream_t * substream,
 190                          snd_pcm_hw_params_t * hw_params)
 191 {
 192         chip_t *chip = snd_pcm_substream_chip(substream);
 193         stream_t *stream = (stream_t *) (substream->runtime->private_data);
 194         snd_pcm_sgbuf_t *sgbuf;
 195         int err;
 196
 197         // Alloc buffer memory.
 198         err =
 199             snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
 200         if (err < 0) {
 201                 printk(KERN_ERR "Vortex: pcm page alloc failed!\n");
 202                 return err;
 203         }
 204         //sgbuf = (snd_pcm_sgbuf_t *) substream->runtime->dma_private;
 205         sgbuf = snd_pcm_substream_sgbuf(substream);
 206         /*
 207            printk(KERN_INFO "Vortex: periods %d, period_bytes %d, channels = %d\n", params_periods(hw_params),
 208            params_period_bytes(hw_params), params_channels(hw_params));
 209          */
 210         // Make audio routes and config buffer DMA.
 211         if (VORTEX_PCM_TYPE(substream->pcm) != VORTEX_PCM_WT) {
 212                 int dma, type = VORTEX_PCM_TYPE(substream->pcm);
 213                 /* Dealloc any routes. */
 214                 if (stream != NULL)
 215                         vortex_adb_allocroute(chip, stream->dma,
 216                                               stream->nr_ch, stream->dir,
 217                                               stream->type);
 218                 /* Alloc routes. */
 219                 dma =
 220                     vortex_adb_allocroute(chip, -1,
 221                                           params_channels(hw_params),
 222                                           substream->stream, type);
 223                 if (dma < 0)
 224                         return dma;
 225                 stream = substream->runtime->private_data = &chip->dma_adb[dma];
 226                 stream->substream = substream;
 227                 /* Setup Buffers. */
 228                 vortex_adbdma_setbuffers(chip, dma, sgbuf,
 229                                          params_period_bytes(hw_params),
 230                                          params_periods(hw_params));
 231         }
 232 #ifndef CHIP_AU8810
 233         else {
 234                 /* if (stream != NULL)
 235                    vortex_wt_allocroute(chip, substream->number, 0); */
 236                 vortex_wt_allocroute(chip, substream->number,
 237                                      params_channels(hw_params));
 238                 stream = substream->runtime->private_data =
 239                     &chip->dma_wt[substream->number];
 240                 stream->dma = substream->number;
 241                 stream->substream = substream;
 242                 vortex_wtdma_setbuffers(chip, substream->number, sgbuf,
 243                                         params_period_bytes(hw_params),
 244                                         params_periods(hw_params));
 245         }
 246 #endif
 247         return 0;
 248 }
 249
 250 /* hw_free callback */
 251 static int snd_vortex_pcm_hw_free(snd_pcm_substream_t * substream)
 252 {
 253         chip_t *chip = snd_pcm_substream_chip(substream);
 254         stream_t *stream = (stream_t *) (substream->runtime->private_data);
 255
 256         // Delete audio routes.
 257         if (VORTEX_PCM_TYPE(substream->pcm) != VORTEX_PCM_WT) {
 258                 if (stream != NULL)
 259                         vortex_adb_allocroute(chip, stream->dma,
 260                                               stream->nr_ch, stream->dir,
 261                                               stream->type);
 262         }
 263 #ifndef CHIP_AU8810
 264         else {
 265                 if (stream != NULL)
 266                         vortex_wt_allocroute(chip, stream->dma, 0);
 267         }
 268 #endif
 269         substream->runtime->private_data = NULL;
 270
 271         return snd_pcm_lib_free_pages(substream);
 272 }
 273
 274 /* prepare callback */
 275 static int snd_vortex_pcm_prepare(snd_pcm_substream_t * substream)
 276 {
 277         vortex_t *chip = snd_pcm_substream_chip(substream);
 278         snd_pcm_runtime_t *runtime = substream->runtime;
 279         stream_t *stream = (stream_t *) substream->runtime->private_data;
 280         int dma = stream->dma, fmt, dir;
 281
 282         // set up the hardware with the current configuration.
 283         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
 284                 dir = 1;
 285         else
 286                 dir = 0;
 287         fmt = vortex_alsafmt_aspfmt(runtime->format);
 288         if (VORTEX_PCM_TYPE(substream->pcm) != VORTEX_PCM_WT) {
 289                 vortex_adbdma_setmode(chip, dma, 1, dir, fmt, 0 /*? */ ,
 290                                       0);
 291                 vortex_adbdma_setstartbuffer(chip, dma, 0);
 292                 if (VORTEX_PCM_TYPE(substream->pcm) != VORTEX_PCM_SPDIF)
 293                         vortex_adb_setsrc(chip, dma, runtime->rate, dir);
 294         }
 295 #ifndef CHIP_AU8810
 296         else {
 297                 vortex_wtdma_setmode(chip, dma, 1, fmt, 0, 0);
 298                 // FIXME: Set rate (i guess using vortex_wt_writereg() somehow).
 299                 vortex_wtdma_setstartbuffer(chip, dma, 0);
 300         }
 301 #endif
 302         return 0;
 303 }
 304
 305 /* trigger callback */
 306 static int snd_vortex_pcm_trigger(snd_pcm_substream_t * substream, int cmd)
 307 {
 308         chip_t *chip = snd_pcm_substream_chip(substream);
 309         stream_t *stream = (stream_t *) substream->runtime->private_data;
 310         int dma = stream->dma;
 311
 312         switch (cmd) {
 313         case SNDRV_PCM_TRIGGER_START:
 314                 // do something to start the PCM engine
 315                 //printk(KERN_INFO "vortex: start %d\n", dma);
 316                 stream->fifo_enabled = 1;
 317                 if (VORTEX_PCM_TYPE(substream->pcm) != VORTEX_PCM_WT)
 318                         vortex_adbdma_startfifo(chip, dma);
 319 #ifndef CHIP_AU8810
 320                 else {
 321                         printk(KERN_INFO "vortex: wt start %d\n", dma);
 322                         vortex_wtdma_startfifo(chip, dma);
 323                 }
 324 #endif
 325                 break;
 326         case SNDRV_PCM_TRIGGER_STOP:
 327                 // do something to stop the PCM engine
 328                 //printk(KERN_INFO "vortex: stop %d\n", dma);
 329                 stream->fifo_enabled = 0;
 330                 if (VORTEX_PCM_TYPE(substream->pcm) != VORTEX_PCM_WT)
 331                         vortex_adbdma_pausefifo(chip, dma);
 332                 //vortex_adbdma_stopfifo(chip, dma);
 333 #ifndef CHIP_AU8810
 334                 else {
 335                         printk(KERN_INFO "vortex: wt stop %d\n", dma);
 336                         vortex_wtdma_stopfifo(chip, dma);
 337                 }
 338 #endif
 339                 break;
 340         case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
 341                 //printk(KERN_INFO "vortex: pause %d\n", dma);
 342                 if (VORTEX_PCM_TYPE(substream->pcm) != VORTEX_PCM_WT)
 343                         vortex_adbdma_pausefifo(chip, dma);
 344 #ifndef CHIP_AU8810
 345                 else
 346                         vortex_wtdma_pausefifo(chip, dma);
 347 #endif
 348                 break;
 349         case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
 350                 //printk(KERN_INFO "vortex: resume %d\n", dma);
 351                 if (VORTEX_PCM_TYPE(substream->pcm) != VORTEX_PCM_WT)
 352                         vortex_adbdma_resumefifo(chip, dma);
 353 #ifndef CHIP_AU8810
 354                 else
 355                         vortex_wtdma_resumefifo(chip, dma);
 356 #endif
 357                 break;
 358         default:
 359                 return -EINVAL;
 360         }
 361         return 0;
 362 }
 363
 364 /* pointer callback */
 365 static snd_pcm_uframes_t snd_vortex_pcm_pointer(snd_pcm_substream_t * substream)
 366 {
 367         vortex_t *chip = snd_pcm_substream_chip(substream);
 368         stream_t *stream = (stream_t *) substream->runtime->private_data;
 369         int dma = stream->dma;
 370         snd_pcm_uframes_t current_ptr = 0;
 371
 372         spin_lock(&chip->lock);
 373         if (VORTEX_PCM_TYPE(substream->pcm) != VORTEX_PCM_WT)
 374                 current_ptr = vortex_adbdma_getlinearpos(chip, dma);
 375 #ifndef CHIP_AU8810
 376         else
 377                 current_ptr = vortex_wtdma_getlinearpos(chip, dma);
 378 #endif
 379         //printk(KERN_INFO "vortex: pointer = 0x%x\n", current_ptr);
 380         spin_unlock(&chip->lock);
 381         return (bytes_to_frames(substream->runtime, current_ptr));
 382 }
 383
 384 /* Page callback. */
 385 /*
 386 static struct page *snd_pcm_sgbuf_ops_page(snd_pcm_substream_t *substream, unsigned long offset) {
 387
 388
 389 }
 390 */
 391 /* operators */
 392 static snd_pcm_ops_t snd_vortex_playback_ops = {
 393         .open = snd_vortex_pcm_open,
 394         .close = snd_vortex_pcm_close,
 395         .ioctl = snd_pcm_lib_ioctl,
 396         .hw_params = snd_vortex_pcm_hw_params,
 397         .hw_free = snd_vortex_pcm_hw_free,
 398         .prepare = snd_vortex_pcm_prepare,
 399         .trigger = snd_vortex_pcm_trigger,
 400         .pointer = snd_vortex_pcm_pointer,
 401         .page = snd_pcm_sgbuf_ops_page,
 402 };
 403
 404 /*
 405 *  definitions of capture are omitted here...
 406 */
 407
 408 static char *vortex_pcm_prettyname[VORTEX_PCM_LAST] = {
 409         "AU88x0 ADB",
 410         "AU88x0 SPDIF",
 411         "AU88x0 A3D",
 412         "AU88x0 WT",
 413         "AU88x0 I2S",
 414 };
 415 static char *vortex_pcm_name[VORTEX_PCM_LAST] = {
 416         "adb",
 417         "spdif",
 418         "a3d",
 419         "wt",
 420         "i2s",
 421 };
 422
 423 /* SPDIF kcontrol */
 424 static int
 425 snd_vortex_spdif_info(snd_kcontrol_t * kcontrol, snd_ctl_elem_info_t * uinfo)
 426 {
 427         static char *texts[] = { "32000", "44100", "48000" };
 428
 429         uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
 430         uinfo->count = 1;
 431         uinfo->value.enumerated.items = 3;
 432         if (uinfo->value.enumerated.item >= uinfo->value.enumerated.items)
 433                 uinfo->value.enumerated.item =
 434                     uinfo->value.enumerated.items - 1;
 435         strcpy(uinfo->value.enumerated.name,
 436                texts[uinfo->value.enumerated.item]);
 437         return 0;
 438 }
 439 static int
 440 snd_vortex_spdif_get(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
 441 {
 442         vortex_t *vortex = snd_kcontrol_chip(kcontrol);
 443
 444         if (vortex->spdif_sr == 32000)
 445                 ucontrol->value.enumerated.item[0] = 0;
 446         if (vortex->spdif_sr == 44100)
 447                 ucontrol->value.enumerated.item[0] = 1;
 448         if (vortex->spdif_sr == 48000)
 449                 ucontrol->value.enumerated.item[0] = 2;
 450         return 0;
 451 }
 452 static int
 453 snd_vortex_spdif_put(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
 454 {
 455         vortex_t *vortex = snd_kcontrol_chip(kcontrol);
 456         static unsigned int sr[3] = { 32000, 44100, 48000 };
 457
 458         //printk("vortex: spdif sr = %d\n", ucontrol->value.enumerated.item[0]);
 459         vortex->spdif_sr = sr[ucontrol->value.enumerated.item[0] % 3];
 460         vortex_spdif_init(vortex,
 461                           sr[ucontrol->value.enumerated.item[0] % 3], 1);
 462         return 1;
 463 }
 464 static snd_kcontrol_new_t vortex_spdif_kcontrol __devinitdata = {
 465         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 466         .name = "SPDIF SR",
 467         .index = 0,
 468         .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
 469         .private_value = 0,
 470         .info = snd_vortex_spdif_info,
 471         .get = snd_vortex_spdif_get,
 472         .put = snd_vortex_spdif_put
 473 };
 474
 475 /* create a pcm device */
 476 static int __devinit snd_vortex_new_pcm(vortex_t * chip, int idx, int nr)
 477 {
 478         snd_pcm_t *pcm;
 479         int err, nr_capt;
 480
 481         if ((chip == 0) || (idx < 0) || (idx > VORTEX_PCM_LAST))
 482                 return -ENODEV;
 483
 484         /* idx indicates which kind of PCM device. ADB, SPDIF, I2S and A3D share the
 485          * same dma engine. WT uses it own separate dma engine whcih cant capture. */
 486         if (idx == VORTEX_PCM_ADB)
 487                 nr_capt = nr;
 488         else
 489                 nr_capt = 0;
 490         if ((err =
 491              snd_pcm_new(chip->card, vortex_pcm_prettyname[idx], idx, nr,
 492                          nr_capt, &pcm)) < 0)
 493                 return err;
 494         strcpy(pcm->name, vortex_pcm_name[idx]);
 495         chip->pcm[idx] = pcm;
 496         // This is an evil hack, but it saves a lot of duplicated code.
 497         VORTEX_PCM_TYPE(pcm) = idx;
 498         pcm->private_data = chip;
 499         /* set operators */
 500         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK,
 501                         &snd_vortex_playback_ops);
 502         if (idx == VORTEX_PCM_ADB)
 503                 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE,
 504                                 &snd_vortex_playback_ops);
 505
 506         /* pre-allocation of Scatter-Gather buffers */
 507
 508         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
 509                                               snd_dma_pci_data(chip->pci_dev),
 510                                               0x10000, 0x10000);
 511
 512         if (VORTEX_PCM_TYPE(pcm) == VORTEX_PCM_SPDIF) {
 513                 snd_kcontrol_t *kcontrol;
 514
 515                 if ((kcontrol =
 516                      snd_ctl_new1(&vortex_spdif_kcontrol, chip)) == NULL)
 517                         return -ENOMEM;
 518                 if ((err = snd_ctl_add(chip->card, kcontrol)) < 0)
 519                         return err;
 520         }
 521         return 0;
 522 }