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         spin_lock_irq(&chip->lock);
 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         spin_unlock_irq(&chip->lock);
 248         return 0;
 249 }
 250
 251 /* hw_free callback */
 252 static int snd_vortex_pcm_hw_free(snd_pcm_substream_t * substream)
 253 {
 254         vortex_t *chip = snd_pcm_substream_chip(substream);
 255         stream_t *stream = (stream_t *) (substream->runtime->private_data);
 256
 257         spin_lock_irq(&chip->lock);
 258         // Delete audio routes.
 259         if (VORTEX_PCM_TYPE(substream->pcm) != VORTEX_PCM_WT) {
 260                 if (stream != NULL)
 261                         vortex_adb_allocroute(chip, stream->dma,
 262                                               stream->nr_ch, stream->dir,
 263                                               stream->type);
 264         }
 265 #ifndef CHIP_AU8810
 266         else {
 267                 if (stream != NULL)
 268                         vortex_wt_allocroute(chip, stream->dma, 0);
 269         }
 270 #endif
 271         substream->runtime->private_data = NULL;
 272         spin_unlock_irq(&chip->lock);
 273
 274         return snd_pcm_lib_free_pages(substream);
 275 }
 276
 277 /* prepare callback */
 278 static int snd_vortex_pcm_prepare(snd_pcm_substream_t * substream)
 279 {
 280         vortex_t *chip = snd_pcm_substream_chip(substream);
 281         snd_pcm_runtime_t *runtime = substream->runtime;
 282         stream_t *stream = (stream_t *) substream->runtime->private_data;
 283         int dma = stream->dma, fmt, dir;
 284
 285         // set up the hardware with the current configuration.
 286         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
 287                 dir = 1;
 288         else
 289                 dir = 0;
 290         fmt = vortex_alsafmt_aspfmt(runtime->format);
 291         spin_lock_irq(&chip->lock);
 292         if (VORTEX_PCM_TYPE(substream->pcm) != VORTEX_PCM_WT) {
 293                 vortex_adbdma_setmode(chip, dma, 1, dir, fmt, 0 /*? */ ,
 294                                       0);
 295                 vortex_adbdma_setstartbuffer(chip, dma, 0);
 296                 if (VORTEX_PCM_TYPE(substream->pcm) != VORTEX_PCM_SPDIF)
 297                         vortex_adb_setsrc(chip, dma, runtime->rate, dir);
 298         }
 299 #ifndef CHIP_AU8810
 300         else {
 301                 vortex_wtdma_setmode(chip, dma, 1, fmt, 0, 0);
 302                 // FIXME: Set rate (i guess using vortex_wt_writereg() somehow).
 303                 vortex_wtdma_setstartbuffer(chip, dma, 0);
 304         }
 305 #endif
 306         spin_unlock_irq(&chip->lock);
 307         return 0;
 308 }
 309
 310 /* trigger callback */
 311 static int snd_vortex_pcm_trigger(snd_pcm_substream_t * substream, int cmd)
 312 {
 313         vortex_t *chip = snd_pcm_substream_chip(substream);
 314         stream_t *stream = (stream_t *) substream->runtime->private_data;
 315         int dma = stream->dma;
 316
 317         spin_lock(&chip->lock);
 318         switch (cmd) {
 319         case SNDRV_PCM_TRIGGER_START:
 320                 // do something to start the PCM engine
 321                 //printk(KERN_INFO "vortex: start %d\n", dma);
 322                 stream->fifo_enabled = 1;
 323                 if (VORTEX_PCM_TYPE(substream->pcm) != VORTEX_PCM_WT)
 324                         vortex_adbdma_startfifo(chip, dma);
 325 #ifndef CHIP_AU8810
 326                 else {
 327                         printk(KERN_INFO "vortex: wt start %d\n", dma);
 328                         vortex_wtdma_startfifo(chip, dma);
 329                 }
 330 #endif
 331                 break;
 332         case SNDRV_PCM_TRIGGER_STOP:
 333                 // do something to stop the PCM engine
 334                 //printk(KERN_INFO "vortex: stop %d\n", dma);
 335                 stream->fifo_enabled = 0;
 336                 if (VORTEX_PCM_TYPE(substream->pcm) != VORTEX_PCM_WT)
 337                         vortex_adbdma_pausefifo(chip, dma);
 338                 //vortex_adbdma_stopfifo(chip, dma);
 339 #ifndef CHIP_AU8810
 340                 else {
 341                         printk(KERN_INFO "vortex: wt stop %d\n", dma);
 342                         vortex_wtdma_stopfifo(chip, dma);
 343                 }
 344 #endif
 345                 break;
 346         case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
 347                 //printk(KERN_INFO "vortex: pause %d\n", dma);
 348                 if (VORTEX_PCM_TYPE(substream->pcm) != VORTEX_PCM_WT)
 349                         vortex_adbdma_pausefifo(chip, dma);
 350 #ifndef CHIP_AU8810
 351                 else
 352                         vortex_wtdma_pausefifo(chip, dma);
 353 #endif
 354                 break;
 355         case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
 356                 //printk(KERN_INFO "vortex: resume %d\n", dma);
 357                 if (VORTEX_PCM_TYPE(substream->pcm) != VORTEX_PCM_WT)
 358                         vortex_adbdma_resumefifo(chip, dma);
 359 #ifndef CHIP_AU8810
 360                 else
 361                         vortex_wtdma_resumefifo(chip, dma);
 362 #endif
 363                 break;
 364         default:
 365                 spin_unlock(&chip->lock);
 366                 return -EINVAL;
 367         }
 368         spin_unlock(&chip->lock);
 369         return 0;
 370 }
 371
 372 /* pointer callback */
 373 static snd_pcm_uframes_t snd_vortex_pcm_pointer(snd_pcm_substream_t * substream)
 374 {
 375         vortex_t *chip = snd_pcm_substream_chip(substream);
 376         stream_t *stream = (stream_t *) substream->runtime->private_data;
 377         int dma = stream->dma;
 378         snd_pcm_uframes_t current_ptr = 0;
 379
 380         spin_lock(&chip->lock);
 381         if (VORTEX_PCM_TYPE(substream->pcm) != VORTEX_PCM_WT)
 382                 current_ptr = vortex_adbdma_getlinearpos(chip, dma);
 383 #ifndef CHIP_AU8810
 384         else
 385                 current_ptr = vortex_wtdma_getlinearpos(chip, dma);
 386 #endif
 387         //printk(KERN_INFO "vortex: pointer = 0x%x\n", current_ptr);
 388         spin_unlock(&chip->lock);
 389         return (bytes_to_frames(substream->runtime, current_ptr));
 390 }
 391
 392 /* Page callback. */
 393 /*
 394 static struct page *snd_pcm_sgbuf_ops_page(snd_pcm_substream_t *substream, unsigned long offset) {
 395
 396
 397 }
 398 */
 399 /* operators */
 400 static snd_pcm_ops_t snd_vortex_playback_ops = {
 401         .open = snd_vortex_pcm_open,
 402         .close = snd_vortex_pcm_close,
 403         .ioctl = snd_pcm_lib_ioctl,
 404         .hw_params = snd_vortex_pcm_hw_params,
 405         .hw_free = snd_vortex_pcm_hw_free,
 406         .prepare = snd_vortex_pcm_prepare,
 407         .trigger = snd_vortex_pcm_trigger,
 408         .pointer = snd_vortex_pcm_pointer,
 409         .page = snd_pcm_sgbuf_ops_page,
 410 };
 411
 412 /*
 413 *  definitions of capture are omitted here...
 414 */
 415
 416 static char *vortex_pcm_prettyname[VORTEX_PCM_LAST] = {
 417         "AU88x0 ADB",
 418         "AU88x0 SPDIF",
 419         "AU88x0 A3D",
 420         "AU88x0 WT",
 421         "AU88x0 I2S",
 422 };
 423 static char *vortex_pcm_name[VORTEX_PCM_LAST] = {
 424         "adb",
 425         "spdif",
 426         "a3d",
 427         "wt",
 428         "i2s",
 429 };
 430
 431 /* SPDIF kcontrol */
 432 static int
 433 snd_vortex_spdif_info(snd_kcontrol_t * kcontrol, snd_ctl_elem_info_t * uinfo)
 434 {
 435         static char *texts[] = { "32000", "44100", "48000" };
 436
 437         uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
 438         uinfo->count = 1;
 439         uinfo->value.enumerated.items = 3;
 440         if (uinfo->value.enumerated.item >= uinfo->value.enumerated.items)
 441                 uinfo->value.enumerated.item =
 442                     uinfo->value.enumerated.items - 1;
 443         strcpy(uinfo->value.enumerated.name,
 444                texts[uinfo->value.enumerated.item]);
 445         return 0;
 446 }
 447 static int
 448 snd_vortex_spdif_get(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
 449 {
 450         vortex_t *vortex = snd_kcontrol_chip(kcontrol);
 451
 452         if (vortex->spdif_sr == 32000)
 453                 ucontrol->value.enumerated.item[0] = 0;
 454         if (vortex->spdif_sr == 44100)
 455                 ucontrol->value.enumerated.item[0] = 1;
 456         if (vortex->spdif_sr == 48000)
 457                 ucontrol->value.enumerated.item[0] = 2;
 458         return 0;
 459 }
 460 static int
 461 snd_vortex_spdif_put(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
 462 {
 463         vortex_t *vortex = snd_kcontrol_chip(kcontrol);
 464         static unsigned int sr[3] = { 32000, 44100, 48000 };
 465
 466         //printk("vortex: spdif sr = %d\n", ucontrol->value.enumerated.item[0]);
 467         vortex->spdif_sr = sr[ucontrol->value.enumerated.item[0] % 3];
 468         vortex_spdif_init(vortex,
 469                           sr[ucontrol->value.enumerated.item[0] % 3], 1);
 470         return 1;
 471 }
 472 static snd_kcontrol_new_t vortex_spdif_kcontrol __devinitdata = {
 473         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 474         .name = "SPDIF SR",
 475         .index = 0,
 476         .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
 477         .private_value = 0,
 478         .info = snd_vortex_spdif_info,
 479         .get = snd_vortex_spdif_get,
 480         .put = snd_vortex_spdif_put
 481 };
 482
 483 /* create a pcm device */
 484 static int __devinit snd_vortex_new_pcm(vortex_t * chip, int idx, int nr)
 485 {
 486         snd_pcm_t *pcm;
 487         int err, nr_capt;
 488
 489         if ((chip == 0) || (idx < 0) || (idx > VORTEX_PCM_LAST))
 490                 return -ENODEV;
 491
 492         /* idx indicates which kind of PCM device. ADB, SPDIF, I2S and A3D share the
 493          * same dma engine. WT uses it own separate dma engine whcih cant capture. */
 494         if (idx == VORTEX_PCM_ADB)
 495                 nr_capt = nr;
 496         else
 497                 nr_capt = 0;
 498         if ((err =
 499              snd_pcm_new(chip->card, vortex_pcm_prettyname[idx], idx, nr,
 500                          nr_capt, &pcm)) < 0)
 501                 return err;
 502         strcpy(pcm->name, vortex_pcm_name[idx]);
 503         chip->pcm[idx] = pcm;
 504         // This is an evil hack, but it saves a lot of duplicated code.
 505         VORTEX_PCM_TYPE(pcm) = idx;
 506         pcm->private_data = chip;
 507         /* set operators */
 508         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK,
 509                         &snd_vortex_playback_ops);
 510         if (idx == VORTEX_PCM_ADB)
 511                 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE,
 512                                 &snd_vortex_playback_ops);
 513
 514         /* pre-allocation of Scatter-Gather buffers */
 515
 516         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
 517                                               snd_dma_pci_data(chip->pci_dev),
 518                                               0x10000, 0x10000);
 519
 520         if (VORTEX_PCM_TYPE(pcm) == VORTEX_PCM_SPDIF) {
 521                 snd_kcontrol_t *kcontrol;
 522
 523                 if ((kcontrol =
 524                      snd_ctl_new1(&vortex_spdif_kcontrol, chip)) == NULL)
 525                         return -ENOMEM;
 526                 if ((err = snd_ctl_add(chip->card, kcontrol)) < 0)
 527                         return err;
 528         }
 529         return 0;
 530 }