sound/pci/ctxfi/ctpcm.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * Copyright (C) 2008, Creative Technology Ltd. All Rights Reserved.
   4  *
   5  * @File        ctpcm.c
   6  *
   7  * @Brief
   8  * This file contains the definition of the pcm device functions.
   9  *
  10  * @Author      Liu Chun
  11  * @Date        Apr 2 2008
  12  */
  13
  14 #include "ctpcm.h"
  15 #include "cttimer.h"
  16 #include <linux/slab.h>
  17 #include <sound/pcm.h>
  18
  19 /* Hardware descriptions for playback */
  20 static const struct snd_pcm_hardware ct_pcm_playback_hw = {
  21         .info                   = (SNDRV_PCM_INFO_MMAP |
  22                                    SNDRV_PCM_INFO_INTERLEAVED |
  23                                    SNDRV_PCM_INFO_BLOCK_TRANSFER |
  24                                    SNDRV_PCM_INFO_MMAP_VALID |
  25                                    SNDRV_PCM_INFO_PAUSE),
  26         .formats                = (SNDRV_PCM_FMTBIT_U8 |
  27                                    SNDRV_PCM_FMTBIT_S16_LE |
  28                                    SNDRV_PCM_FMTBIT_S24_3LE |
  29                                    SNDRV_PCM_FMTBIT_S32_LE |
  30                                    SNDRV_PCM_FMTBIT_FLOAT_LE),
  31         .rates                  = (SNDRV_PCM_RATE_CONTINUOUS |
  32                                    SNDRV_PCM_RATE_8000_192000),
  33         .rate_min               = 8000,
  34         .rate_max               = 192000,
  35         .channels_min           = 1,
  36         .channels_max           = 2,
  37         .buffer_bytes_max       = (128*1024),
  38         .period_bytes_min       = (64),
  39         .period_bytes_max       = (128*1024),
  40         .periods_min            = 2,
  41         .periods_max            = 1024,
  42         .fifo_size              = 0,
  43 };
  44
  45 static const struct snd_pcm_hardware ct_spdif_passthru_playback_hw = {
  46         .info                   = (SNDRV_PCM_INFO_MMAP |
  47                                    SNDRV_PCM_INFO_INTERLEAVED |
  48                                    SNDRV_PCM_INFO_BLOCK_TRANSFER |
  49                                    SNDRV_PCM_INFO_MMAP_VALID |
  50                                    SNDRV_PCM_INFO_PAUSE),
  51         .formats                = SNDRV_PCM_FMTBIT_S16_LE,
  52         .rates                  = (SNDRV_PCM_RATE_48000 |
  53                                    SNDRV_PCM_RATE_44100 |
  54                                    SNDRV_PCM_RATE_32000),
  55         .rate_min               = 32000,
  56         .rate_max               = 48000,
  57         .channels_min           = 2,
  58         .channels_max           = 2,
  59         .buffer_bytes_max       = (128*1024),
  60         .period_bytes_min       = (64),
  61         .period_bytes_max       = (128*1024),
  62         .periods_min            = 2,
  63         .periods_max            = 1024,
  64         .fifo_size              = 0,
  65 };
  66
  67 /* Hardware descriptions for capture */
  68 static const struct snd_pcm_hardware ct_pcm_capture_hw = {
  69         .info                   = (SNDRV_PCM_INFO_MMAP |
  70                                    SNDRV_PCM_INFO_INTERLEAVED |
  71                                    SNDRV_PCM_INFO_BLOCK_TRANSFER |
  72                                    SNDRV_PCM_INFO_PAUSE |
  73                                    SNDRV_PCM_INFO_MMAP_VALID),
  74         .formats                = (SNDRV_PCM_FMTBIT_U8 |
  75                                    SNDRV_PCM_FMTBIT_S16_LE |
  76                                    SNDRV_PCM_FMTBIT_S24_3LE |
  77                                    SNDRV_PCM_FMTBIT_S32_LE |
  78                                    SNDRV_PCM_FMTBIT_FLOAT_LE),
  79         .rates                  = (SNDRV_PCM_RATE_CONTINUOUS |
  80                                    SNDRV_PCM_RATE_8000_96000),
  81         .rate_min               = 8000,
  82         .rate_max               = 96000,
  83         .channels_min           = 1,
  84         .channels_max           = 2,
  85         .buffer_bytes_max       = (128*1024),
  86         .period_bytes_min       = (384),
  87         .period_bytes_max       = (64*1024),
  88         .periods_min            = 2,
  89         .periods_max            = 1024,
  90         .fifo_size              = 0,
  91 };
  92
  93 static void ct_atc_pcm_interrupt(struct ct_atc_pcm *atc_pcm)
  94 {
  95         struct ct_atc_pcm *apcm = atc_pcm;
  96
  97         if (!apcm->substream)
  98                 return;
  99
 100         snd_pcm_period_elapsed(apcm->substream);
 101 }
 102
 103 static void ct_atc_pcm_free_substream(struct snd_pcm_runtime *runtime)
 104 {
 105         struct ct_atc_pcm *apcm = runtime->private_data;
 106         struct ct_atc *atc = snd_pcm_substream_chip(apcm->substream);
 107
 108         atc->pcm_release_resources(atc, apcm);
 109         ct_timer_instance_free(apcm->timer);
 110         kfree(apcm);
 111         runtime->private_data = NULL;
 112 }
 113
 114 /* pcm playback operations */
 115 static int ct_pcm_playback_open(struct snd_pcm_substream *substream)
 116 {
 117         struct ct_atc *atc = snd_pcm_substream_chip(substream);
 118         struct snd_pcm_runtime *runtime = substream->runtime;
 119         struct ct_atc_pcm *apcm;
 120         int err;
 121
 122         apcm = kzalloc(sizeof(*apcm), GFP_KERNEL);
 123         if (!apcm)
 124                 return -ENOMEM;
 125
 126         apcm->substream = substream;
 127         apcm->interrupt = ct_atc_pcm_interrupt;
 128         if (IEC958 == substream->pcm->device) {
 129                 runtime->hw = ct_spdif_passthru_playback_hw;
 130                 atc->spdif_out_passthru(atc, 1);
 131         } else {
 132                 runtime->hw = ct_pcm_playback_hw;
 133                 if (FRONT == substream->pcm->device)
 134                         runtime->hw.channels_max = 8;
 135         }
 136
 137         err = snd_pcm_hw_constraint_integer(runtime,
 138                                             SNDRV_PCM_HW_PARAM_PERIODS);
 139         if (err < 0)
 140                 goto free_pcm;
 141
 142         err = snd_pcm_hw_constraint_minmax(runtime,
 143                                            SNDRV_PCM_HW_PARAM_BUFFER_BYTES,
 144                                            1024, UINT_MAX);
 145         if (err < 0)
 146                 goto free_pcm;
 147
 148         apcm->timer = ct_timer_instance_new(atc->timer, apcm);
 149         if (!apcm->timer) {
 150                 err = -ENOMEM;
 151                 goto free_pcm;
 152         }
 153         runtime->private_data = apcm;
 154         runtime->private_free = ct_atc_pcm_free_substream;
 155
 156         return 0;
 157
 158 free_pcm:
 159         kfree(apcm);
 160         return err;
 161 }
 162
 163 static int ct_pcm_playback_close(struct snd_pcm_substream *substream)
 164 {
 165         struct ct_atc *atc = snd_pcm_substream_chip(substream);
 166
 167         /* TODO: Notify mixer inactive. */
 168         if (IEC958 == substream->pcm->device)
 169                 atc->spdif_out_passthru(atc, 0);
 170
 171         /* The ct_atc_pcm object will be freed by runtime->private_free */
 172
 173         return 0;
 174 }
 175
 176 static int ct_pcm_hw_params(struct snd_pcm_substream *substream,
 177                                      struct snd_pcm_hw_params *hw_params)
 178 {
 179         struct ct_atc *atc = snd_pcm_substream_chip(substream);
 180         struct ct_atc_pcm *apcm = substream->runtime->private_data;
 181
 182         /* clear previous resources */
 183         atc->pcm_release_resources(atc, apcm);
 184         return 0;
 185 }
 186
 187 static int ct_pcm_hw_free(struct snd_pcm_substream *substream)
 188 {
 189         struct ct_atc *atc = snd_pcm_substream_chip(substream);
 190         struct ct_atc_pcm *apcm = substream->runtime->private_data;
 191
 192         /* clear previous resources */
 193         atc->pcm_release_resources(atc, apcm);
 194         return 0;
 195 }
 196
 197
 198 static int ct_pcm_playback_prepare(struct snd_pcm_substream *substream)
 199 {
 200         int err;
 201         struct ct_atc *atc = snd_pcm_substream_chip(substream);
 202         struct snd_pcm_runtime *runtime = substream->runtime;
 203         struct ct_atc_pcm *apcm = runtime->private_data;
 204
 205         if (IEC958 == substream->pcm->device)
 206                 err = atc->spdif_passthru_playback_prepare(atc, apcm);
 207         else
 208                 err = atc->pcm_playback_prepare(atc, apcm);
 209
 210         if (err < 0) {
 211                 dev_err(atc->card->dev,
 212                         "Preparing pcm playback failed!!!\n");
 213                 return err;
 214         }
 215
 216         return 0;
 217 }
 218
 219 static int
 220 ct_pcm_playback_trigger(struct snd_pcm_substream *substream, int cmd)
 221 {
 222         struct ct_atc *atc = snd_pcm_substream_chip(substream);
 223         struct snd_pcm_runtime *runtime = substream->runtime;
 224         struct ct_atc_pcm *apcm = runtime->private_data;
 225
 226         switch (cmd) {
 227         case SNDRV_PCM_TRIGGER_START:
 228         case SNDRV_PCM_TRIGGER_RESUME:
 229         case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
 230                 atc->pcm_playback_start(atc, apcm);
 231                 break;
 232         case SNDRV_PCM_TRIGGER_STOP:
 233         case SNDRV_PCM_TRIGGER_SUSPEND:
 234         case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
 235                 atc->pcm_playback_stop(atc, apcm);
 236                 break;
 237         default:
 238                 break;
 239         }
 240
 241         return 0;
 242 }
 243
 244 static snd_pcm_uframes_t
 245 ct_pcm_playback_pointer(struct snd_pcm_substream *substream)
 246 {
 247         unsigned long position;
 248         struct ct_atc *atc = snd_pcm_substream_chip(substream);
 249         struct snd_pcm_runtime *runtime = substream->runtime;
 250         struct ct_atc_pcm *apcm = runtime->private_data;
 251
 252         /* Read out playback position */
 253         position = atc->pcm_playback_position(atc, apcm);
 254         position = bytes_to_frames(runtime, position);
 255         if (position >= runtime->buffer_size)
 256                 position = 0;
 257         return position;
 258 }
 259
 260 /* pcm capture operations */
 261 static int ct_pcm_capture_open(struct snd_pcm_substream *substream)
 262 {
 263         struct ct_atc *atc = snd_pcm_substream_chip(substream);
 264         struct snd_pcm_runtime *runtime = substream->runtime;
 265         struct ct_atc_pcm *apcm;
 266         int err;
 267
 268         apcm = kzalloc(sizeof(*apcm), GFP_KERNEL);
 269         if (!apcm)
 270                 return -ENOMEM;
 271
 272         apcm->started = 0;
 273         apcm->substream = substream;
 274         apcm->interrupt = ct_atc_pcm_interrupt;
 275         runtime->hw = ct_pcm_capture_hw;
 276         runtime->hw.rate_max = atc->rsr * atc->msr;
 277
 278         err = snd_pcm_hw_constraint_integer(runtime,
 279                                             SNDRV_PCM_HW_PARAM_PERIODS);
 280         if (err < 0)
 281                 goto free_pcm;
 282
 283         err = snd_pcm_hw_constraint_minmax(runtime,
 284                                            SNDRV_PCM_HW_PARAM_BUFFER_BYTES,
 285                                            1024, UINT_MAX);
 286         if (err < 0)
 287                 goto free_pcm;
 288
 289         apcm->timer = ct_timer_instance_new(atc->timer, apcm);
 290         if (!apcm->timer) {
 291                 err = -ENOMEM;
 292                 goto free_pcm;
 293         }
 294         runtime->private_data = apcm;
 295         runtime->private_free = ct_atc_pcm_free_substream;
 296
 297         return 0;
 298
 299 free_pcm:
 300         kfree(apcm);
 301         return err;
 302 }
 303
 304 static int ct_pcm_capture_close(struct snd_pcm_substream *substream)
 305 {
 306         /* The ct_atc_pcm object will be freed by runtime->private_free */
 307         /* TODO: Notify mixer inactive. */
 308         return 0;
 309 }
 310
 311 static int ct_pcm_capture_prepare(struct snd_pcm_substream *substream)
 312 {
 313         int err;
 314         struct ct_atc *atc = snd_pcm_substream_chip(substream);
 315         struct snd_pcm_runtime *runtime = substream->runtime;
 316         struct ct_atc_pcm *apcm = runtime->private_data;
 317
 318         err = atc->pcm_capture_prepare(atc, apcm);
 319         if (err < 0) {
 320                 dev_err(atc->card->dev,
 321                         "Preparing pcm capture failed!!!\n");
 322                 return err;
 323         }
 324
 325         return 0;
 326 }
 327
 328 static int
 329 ct_pcm_capture_trigger(struct snd_pcm_substream *substream, int cmd)
 330 {
 331         struct ct_atc *atc = snd_pcm_substream_chip(substream);
 332         struct snd_pcm_runtime *runtime = substream->runtime;
 333         struct ct_atc_pcm *apcm = runtime->private_data;
 334
 335         switch (cmd) {
 336         case SNDRV_PCM_TRIGGER_START:
 337                 atc->pcm_capture_start(atc, apcm);
 338                 break;
 339         case SNDRV_PCM_TRIGGER_STOP:
 340                 atc->pcm_capture_stop(atc, apcm);
 341                 break;
 342         default:
 343                 atc->pcm_capture_stop(atc, apcm);
 344                 break;
 345         }
 346
 347         return 0;
 348 }
 349
 350 static snd_pcm_uframes_t
 351 ct_pcm_capture_pointer(struct snd_pcm_substream *substream)
 352 {
 353         unsigned long position;
 354         struct ct_atc *atc = snd_pcm_substream_chip(substream);
 355         struct snd_pcm_runtime *runtime = substream->runtime;
 356         struct ct_atc_pcm *apcm = runtime->private_data;
 357
 358         /* Read out playback position */
 359         position = atc->pcm_capture_position(atc, apcm);
 360         position = bytes_to_frames(runtime, position);
 361         if (position >= runtime->buffer_size)
 362                 position = 0;
 363         return position;
 364 }
 365
 366 /* PCM operators for playback */
 367 static const struct snd_pcm_ops ct_pcm_playback_ops = {
 368         .open           = ct_pcm_playback_open,
 369         .close          = ct_pcm_playback_close,
 370         .hw_params      = ct_pcm_hw_params,
 371         .hw_free        = ct_pcm_hw_free,
 372         .prepare        = ct_pcm_playback_prepare,
 373         .trigger        = ct_pcm_playback_trigger,
 374         .pointer        = ct_pcm_playback_pointer,
 375 };
 376
 377 /* PCM operators for capture */
 378 static const struct snd_pcm_ops ct_pcm_capture_ops = {
 379         .open           = ct_pcm_capture_open,
 380         .close          = ct_pcm_capture_close,
 381         .hw_params      = ct_pcm_hw_params,
 382         .hw_free        = ct_pcm_hw_free,
 383         .prepare        = ct_pcm_capture_prepare,
 384         .trigger        = ct_pcm_capture_trigger,
 385         .pointer        = ct_pcm_capture_pointer,
 386 };
 387
 388 static const struct snd_pcm_chmap_elem surround_map[] = {
 389         { .channels = 1,
 390           .map = { SNDRV_CHMAP_MONO } },
 391         { .channels = 2,
 392           .map = { SNDRV_CHMAP_RL, SNDRV_CHMAP_RR } },
 393         { }
 394 };
 395
 396 static const struct snd_pcm_chmap_elem clfe_map[] = {
 397         { .channels = 1,
 398           .map = { SNDRV_CHMAP_MONO } },
 399         { .channels = 2,
 400           .map = { SNDRV_CHMAP_FC, SNDRV_CHMAP_LFE } },
 401         { }
 402 };
 403
 404 static const struct snd_pcm_chmap_elem side_map[] = {
 405         { .channels = 1,
 406           .map = { SNDRV_CHMAP_MONO } },
 407         { .channels = 2,
 408           .map = { SNDRV_CHMAP_SL, SNDRV_CHMAP_SR } },
 409         { }
 410 };
 411
 412 /* Create ALSA pcm device */
 413 int ct_alsa_pcm_create(struct ct_atc *atc,
 414                        enum CTALSADEVS device,
 415                        const char *device_name)
 416 {
 417         struct snd_pcm *pcm;
 418         const struct snd_pcm_chmap_elem *map;
 419         int chs;
 420         int err;
 421         int playback_count, capture_count;
 422
 423         playback_count = (IEC958 == device) ? 1 : 256;
 424         capture_count = (FRONT == device) ? 1 : 0;
 425         err = snd_pcm_new(atc->card, "ctxfi", device,
 426                           playback_count, capture_count, &pcm);
 427         if (err < 0) {
 428                 dev_err(atc->card->dev, "snd_pcm_new failed!! Err=%d\n",
 429                         err);
 430                 return err;
 431         }
 432
 433         pcm->private_data = atc;
 434         pcm->info_flags = 0;
 435         pcm->dev_subclass = SNDRV_PCM_SUBCLASS_GENERIC_MIX;
 436         strlcpy(pcm->name, device_name, sizeof(pcm->name));
 437
 438         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &ct_pcm_playback_ops);
 439
 440         if (FRONT == device)
 441                 snd_pcm_set_ops(pcm,
 442                                 SNDRV_PCM_STREAM_CAPTURE, &ct_pcm_capture_ops);
 443
 444         snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
 445                                        &atc->pci->dev, 128*1024, 128*1024);
 446
 447         chs = 2;
 448         switch (device) {
 449         case FRONT:
 450                 chs = 8;
 451                 map = snd_pcm_std_chmaps;
 452                 break;
 453         case SURROUND:
 454                 map = surround_map;
 455                 break;
 456         case CLFE:
 457                 map = clfe_map;
 458                 break;
 459         case SIDE:
 460                 map = side_map;
 461                 break;
 462         default:
 463                 map = snd_pcm_std_chmaps;
 464                 break;
 465         }
 466         err = snd_pcm_add_chmap_ctls(pcm, SNDRV_PCM_STREAM_PLAYBACK, map, chs,
 467                                      0, NULL);
 468         if (err < 0)
 469                 return err;
 470
 471 #ifdef CONFIG_PM_SLEEP
 472         atc->pcms[device] = pcm;
 473 #endif
 474
 475         return 0;
 476 }