linux/sound/pci/echoaudio/echoaudio.c
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   1// SPDX-License-Identifier: GPL-2.0-only
   2/*
   3 *  ALSA driver for Echoaudio soundcards.
   4 *  Copyright (C) 2003-2004 Giuliano Pochini <pochini@shiny.it>
   5 *  Copyright (C) 2020 Mark Hills <mark@xwax.org>
   6 */
   7
   8#include <linux/module.h>
   9
  10MODULE_AUTHOR("Giuliano Pochini <pochini@shiny.it>");
  11MODULE_LICENSE("GPL v2");
  12MODULE_DESCRIPTION("Echoaudio " ECHOCARD_NAME " soundcards driver");
  13MODULE_SUPPORTED_DEVICE("{{Echoaudio," ECHOCARD_NAME "}}");
  14MODULE_DEVICE_TABLE(pci, snd_echo_ids);
  15
  16static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
  17static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
  18static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
  19
  20module_param_array(index, int, NULL, 0444);
  21MODULE_PARM_DESC(index, "Index value for " ECHOCARD_NAME " soundcard.");
  22module_param_array(id, charp, NULL, 0444);
  23MODULE_PARM_DESC(id, "ID string for " ECHOCARD_NAME " soundcard.");
  24module_param_array(enable, bool, NULL, 0444);
  25MODULE_PARM_DESC(enable, "Enable " ECHOCARD_NAME " soundcard.");
  26
  27static const unsigned int channels_list[10] = {1, 2, 4, 6, 8, 10, 12, 14, 16, 999999};
  28static const DECLARE_TLV_DB_SCALE(db_scale_output_gain, -12800, 100, 1);
  29
  30
  31
  32static int get_firmware(const struct firmware **fw_entry,
  33                        struct echoaudio *chip, const short fw_index)
  34{
  35        int err;
  36        char name[30];
  37
  38#ifdef CONFIG_PM_SLEEP
  39        if (chip->fw_cache[fw_index]) {
  40                dev_dbg(chip->card->dev,
  41                        "firmware requested: %s is cached\n",
  42                        card_fw[fw_index].data);
  43                *fw_entry = chip->fw_cache[fw_index];
  44                return 0;
  45        }
  46#endif
  47
  48        dev_dbg(chip->card->dev,
  49                "firmware requested: %s\n", card_fw[fw_index].data);
  50        snprintf(name, sizeof(name), "ea/%s", card_fw[fw_index].data);
  51        err = request_firmware(fw_entry, name, &chip->pci->dev);
  52        if (err < 0)
  53                dev_err(chip->card->dev,
  54                        "get_firmware(): Firmware not available (%d)\n", err);
  55#ifdef CONFIG_PM_SLEEP
  56        else
  57                chip->fw_cache[fw_index] = *fw_entry;
  58#endif
  59        return err;
  60}
  61
  62
  63
  64static void free_firmware(const struct firmware *fw_entry,
  65                          struct echoaudio *chip)
  66{
  67#ifdef CONFIG_PM_SLEEP
  68        dev_dbg(chip->card->dev, "firmware not released (kept in cache)\n");
  69#else
  70        release_firmware(fw_entry);
  71#endif
  72}
  73
  74
  75
  76static void free_firmware_cache(struct echoaudio *chip)
  77{
  78#ifdef CONFIG_PM_SLEEP
  79        int i;
  80
  81        for (i = 0; i < 8 ; i++)
  82                if (chip->fw_cache[i]) {
  83                        release_firmware(chip->fw_cache[i]);
  84                        dev_dbg(chip->card->dev, "release_firmware(%d)\n", i);
  85                }
  86
  87#endif
  88}
  89
  90
  91
  92/******************************************************************************
  93        PCM interface
  94******************************************************************************/
  95
  96static void audiopipe_free(struct snd_pcm_runtime *runtime)
  97{
  98        struct audiopipe *pipe = runtime->private_data;
  99
 100        if (pipe->sgpage.area)
 101                snd_dma_free_pages(&pipe->sgpage);
 102        kfree(pipe);
 103}
 104
 105
 106
 107static int hw_rule_capture_format_by_channels(struct snd_pcm_hw_params *params,
 108                                              struct snd_pcm_hw_rule *rule)
 109{
 110        struct snd_interval *c = hw_param_interval(params,
 111                                                   SNDRV_PCM_HW_PARAM_CHANNELS);
 112        struct snd_mask *f = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);
 113        struct snd_mask fmt;
 114
 115        snd_mask_any(&fmt);
 116
 117#ifndef ECHOCARD_HAS_STEREO_BIG_ENDIAN32
 118        /* >=2 channels cannot be S32_BE */
 119        if (c->min == 2) {
 120                fmt.bits[0] &= ~SNDRV_PCM_FMTBIT_S32_BE;
 121                return snd_mask_refine(f, &fmt);
 122        }
 123#endif
 124        /* > 2 channels cannot be U8 and S32_BE */
 125        if (c->min > 2) {
 126                fmt.bits[0] &= ~(SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S32_BE);
 127                return snd_mask_refine(f, &fmt);
 128        }
 129        /* Mono is ok with any format */
 130        return 0;
 131}
 132
 133
 134
 135static int hw_rule_capture_channels_by_format(struct snd_pcm_hw_params *params,
 136                                              struct snd_pcm_hw_rule *rule)
 137{
 138        struct snd_interval *c = hw_param_interval(params,
 139                                                   SNDRV_PCM_HW_PARAM_CHANNELS);
 140        struct snd_mask *f = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);
 141        struct snd_interval ch;
 142
 143        snd_interval_any(&ch);
 144
 145        /* S32_BE is mono (and stereo) only */
 146        if (f->bits[0] == SNDRV_PCM_FMTBIT_S32_BE) {
 147                ch.min = 1;
 148#ifdef ECHOCARD_HAS_STEREO_BIG_ENDIAN32
 149                ch.max = 2;
 150#else
 151                ch.max = 1;
 152#endif
 153                ch.integer = 1;
 154                return snd_interval_refine(c, &ch);
 155        }
 156        /* U8 can be only mono or stereo */
 157        if (f->bits[0] == SNDRV_PCM_FMTBIT_U8) {
 158                ch.min = 1;
 159                ch.max = 2;
 160                ch.integer = 1;
 161                return snd_interval_refine(c, &ch);
 162        }
 163        /* S16_LE, S24_3LE and S32_LE support any number of channels. */
 164        return 0;
 165}
 166
 167
 168
 169static int hw_rule_playback_format_by_channels(struct snd_pcm_hw_params *params,
 170                                               struct snd_pcm_hw_rule *rule)
 171{
 172        struct snd_interval *c = hw_param_interval(params,
 173                                                   SNDRV_PCM_HW_PARAM_CHANNELS);
 174        struct snd_mask *f = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);
 175        struct snd_mask fmt;
 176        u64 fmask;
 177        snd_mask_any(&fmt);
 178
 179        fmask = fmt.bits[0] + ((u64)fmt.bits[1] << 32);
 180
 181        /* >2 channels must be S16_LE, S24_3LE or S32_LE */
 182        if (c->min > 2) {
 183                fmask &= SNDRV_PCM_FMTBIT_S16_LE |
 184                         SNDRV_PCM_FMTBIT_S24_3LE |
 185                         SNDRV_PCM_FMTBIT_S32_LE;
 186        /* 1 channel must be S32_BE or S32_LE */
 187        } else if (c->max == 1)
 188                fmask &= SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S32_BE;
 189#ifndef ECHOCARD_HAS_STEREO_BIG_ENDIAN32
 190        /* 2 channels cannot be S32_BE */
 191        else if (c->min == 2 && c->max == 2)
 192                fmask &= ~SNDRV_PCM_FMTBIT_S32_BE;
 193#endif
 194        else
 195                return 0;
 196
 197        fmt.bits[0] &= (u32)fmask;
 198        fmt.bits[1] &= (u32)(fmask >> 32);
 199        return snd_mask_refine(f, &fmt);
 200}
 201
 202
 203
 204static int hw_rule_playback_channels_by_format(struct snd_pcm_hw_params *params,
 205                                               struct snd_pcm_hw_rule *rule)
 206{
 207        struct snd_interval *c = hw_param_interval(params,
 208                                                   SNDRV_PCM_HW_PARAM_CHANNELS);
 209        struct snd_mask *f = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);
 210        struct snd_interval ch;
 211        u64 fmask;
 212
 213        snd_interval_any(&ch);
 214        ch.integer = 1;
 215        fmask = f->bits[0] + ((u64)f->bits[1] << 32);
 216
 217        /* S32_BE is mono (and stereo) only */
 218        if (fmask == SNDRV_PCM_FMTBIT_S32_BE) {
 219                ch.min = 1;
 220#ifdef ECHOCARD_HAS_STEREO_BIG_ENDIAN32
 221                ch.max = 2;
 222#else
 223                ch.max = 1;
 224#endif
 225        /* U8 is stereo only */
 226        } else if (fmask == SNDRV_PCM_FMTBIT_U8)
 227                ch.min = ch.max = 2;
 228        /* S16_LE and S24_3LE must be at least stereo */
 229        else if (!(fmask & ~(SNDRV_PCM_FMTBIT_S16_LE |
 230                               SNDRV_PCM_FMTBIT_S24_3LE)))
 231                ch.min = 2;
 232        else
 233                return 0;
 234
 235        return snd_interval_refine(c, &ch);
 236}
 237
 238
 239
 240/* Since the sample rate is a global setting, do allow the user to change the
 241sample rate only if there is only one pcm device open. */
 242static int hw_rule_sample_rate(struct snd_pcm_hw_params *params,
 243                               struct snd_pcm_hw_rule *rule)
 244{
 245        struct snd_interval *rate = hw_param_interval(params,
 246                                                      SNDRV_PCM_HW_PARAM_RATE);
 247        struct echoaudio *chip = rule->private;
 248        struct snd_interval fixed;
 249        int err;
 250
 251        mutex_lock(&chip->mode_mutex);
 252
 253        if (chip->can_set_rate) {
 254                err = 0;
 255        } else {
 256                snd_interval_any(&fixed);
 257                fixed.min = fixed.max = chip->sample_rate;
 258                err = snd_interval_refine(rate, &fixed);
 259        }
 260
 261        mutex_unlock(&chip->mode_mutex);
 262        return err;
 263}
 264
 265
 266static int pcm_open(struct snd_pcm_substream *substream,
 267                    signed char max_channels)
 268{
 269        struct echoaudio *chip;
 270        struct snd_pcm_runtime *runtime;
 271        struct audiopipe *pipe;
 272        int err, i;
 273
 274        if (max_channels <= 0)
 275                return -EAGAIN;
 276
 277        chip = snd_pcm_substream_chip(substream);
 278        runtime = substream->runtime;
 279
 280        pipe = kzalloc(sizeof(struct audiopipe), GFP_KERNEL);
 281        if (!pipe)
 282                return -ENOMEM;
 283        pipe->index = -1;               /* Not configured yet */
 284
 285        /* Set up hw capabilities and contraints */
 286        memcpy(&pipe->hw, &pcm_hardware_skel, sizeof(struct snd_pcm_hardware));
 287        dev_dbg(chip->card->dev, "max_channels=%d\n", max_channels);
 288        pipe->constr.list = channels_list;
 289        pipe->constr.mask = 0;
 290        for (i = 0; channels_list[i] <= max_channels; i++);
 291        pipe->constr.count = i;
 292        if (pipe->hw.channels_max > max_channels)
 293                pipe->hw.channels_max = max_channels;
 294        if (chip->digital_mode == DIGITAL_MODE_ADAT) {
 295                pipe->hw.rate_max = 48000;
 296                pipe->hw.rates &= SNDRV_PCM_RATE_8000_48000;
 297        }
 298
 299        runtime->hw = pipe->hw;
 300        runtime->private_data = pipe;
 301        runtime->private_free = audiopipe_free;
 302        snd_pcm_set_sync(substream);
 303
 304        /* Only mono and any even number of channels are allowed */
 305        if ((err = snd_pcm_hw_constraint_list(runtime, 0,
 306                                              SNDRV_PCM_HW_PARAM_CHANNELS,
 307                                              &pipe->constr)) < 0)
 308                return err;
 309
 310        /* All periods should have the same size */
 311        if ((err = snd_pcm_hw_constraint_integer(runtime,
 312                                                 SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
 313                return err;
 314
 315        /* The hw accesses memory in chunks 32 frames long and they should be
 316        32-bytes-aligned. It's not a requirement, but it seems that IRQs are
 317        generated with a resolution of 32 frames. Thus we need the following */
 318        if ((err = snd_pcm_hw_constraint_step(runtime, 0,
 319                                              SNDRV_PCM_HW_PARAM_PERIOD_SIZE,
 320                                              32)) < 0)
 321                return err;
 322        if ((err = snd_pcm_hw_constraint_step(runtime, 0,
 323                                              SNDRV_PCM_HW_PARAM_BUFFER_SIZE,
 324                                              32)) < 0)
 325                return err;
 326
 327        if ((err = snd_pcm_hw_rule_add(substream->runtime, 0,
 328                                       SNDRV_PCM_HW_PARAM_RATE,
 329                                        hw_rule_sample_rate, chip,
 330                                       SNDRV_PCM_HW_PARAM_RATE, -1)) < 0)
 331                return err;
 332
 333        /* Allocate a page for the scatter-gather list */
 334        if ((err = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV,
 335                                       &chip->pci->dev,
 336                                       PAGE_SIZE, &pipe->sgpage)) < 0) {
 337                dev_err(chip->card->dev, "s-g list allocation failed\n");
 338                return err;
 339        }
 340
 341        /*
 342         * Sole ownership required to set the rate
 343         */
 344
 345        dev_dbg(chip->card->dev, "pcm_open opencount=%d can_set_rate=%d, rate_set=%d",
 346                chip->opencount, chip->can_set_rate, chip->rate_set);
 347
 348        chip->opencount++;
 349        if (chip->opencount > 1 && chip->rate_set)
 350                chip->can_set_rate = 0;
 351
 352        return 0;
 353}
 354
 355
 356
 357static int pcm_analog_in_open(struct snd_pcm_substream *substream)
 358{
 359        struct echoaudio *chip = snd_pcm_substream_chip(substream);
 360        int err;
 361
 362        if ((err = pcm_open(substream, num_analog_busses_in(chip) -
 363                            substream->number)) < 0)
 364                return err;
 365        if ((err = snd_pcm_hw_rule_add(substream->runtime, 0,
 366                                       SNDRV_PCM_HW_PARAM_CHANNELS,
 367                                       hw_rule_capture_channels_by_format, NULL,
 368                                       SNDRV_PCM_HW_PARAM_FORMAT, -1)) < 0)
 369                return err;
 370        if ((err = snd_pcm_hw_rule_add(substream->runtime, 0,
 371                                       SNDRV_PCM_HW_PARAM_FORMAT,
 372                                       hw_rule_capture_format_by_channels, NULL,
 373                                       SNDRV_PCM_HW_PARAM_CHANNELS, -1)) < 0)
 374                return err;
 375
 376        return 0;
 377}
 378
 379
 380
 381static int pcm_analog_out_open(struct snd_pcm_substream *substream)
 382{
 383        struct echoaudio *chip = snd_pcm_substream_chip(substream);
 384        int max_channels, err;
 385
 386#ifdef ECHOCARD_HAS_VMIXER
 387        max_channels = num_pipes_out(chip);
 388#else
 389        max_channels = num_analog_busses_out(chip);
 390#endif
 391        if ((err = pcm_open(substream, max_channels - substream->number)) < 0)
 392                return err;
 393        if ((err = snd_pcm_hw_rule_add(substream->runtime, 0,
 394                                       SNDRV_PCM_HW_PARAM_CHANNELS,
 395                                       hw_rule_playback_channels_by_format,
 396                                       NULL,
 397                                       SNDRV_PCM_HW_PARAM_FORMAT, -1)) < 0)
 398                return err;
 399        if ((err = snd_pcm_hw_rule_add(substream->runtime, 0,
 400                                       SNDRV_PCM_HW_PARAM_FORMAT,
 401                                       hw_rule_playback_format_by_channels,
 402                                       NULL,
 403                                       SNDRV_PCM_HW_PARAM_CHANNELS, -1)) < 0)
 404                return err;
 405
 406        return 0;
 407}
 408
 409
 410
 411#ifdef ECHOCARD_HAS_DIGITAL_IO
 412
 413static int pcm_digital_in_open(struct snd_pcm_substream *substream)
 414{
 415        struct echoaudio *chip = snd_pcm_substream_chip(substream);
 416        int err, max_channels;
 417
 418        max_channels = num_digital_busses_in(chip) - substream->number;
 419        mutex_lock(&chip->mode_mutex);
 420        if (chip->digital_mode == DIGITAL_MODE_ADAT)
 421                err = pcm_open(substream, max_channels);
 422        else    /* If the card has ADAT, subtract the 6 channels
 423                 * that S/PDIF doesn't have
 424                 */
 425                err = pcm_open(substream, max_channels - ECHOCARD_HAS_ADAT);
 426
 427        if (err < 0)
 428                goto din_exit;
 429
 430        if ((err = snd_pcm_hw_rule_add(substream->runtime, 0,
 431                                       SNDRV_PCM_HW_PARAM_CHANNELS,
 432                                       hw_rule_capture_channels_by_format, NULL,
 433                                       SNDRV_PCM_HW_PARAM_FORMAT, -1)) < 0)
 434                goto din_exit;
 435        if ((err = snd_pcm_hw_rule_add(substream->runtime, 0,
 436                                       SNDRV_PCM_HW_PARAM_FORMAT,
 437                                       hw_rule_capture_format_by_channels, NULL,
 438                                       SNDRV_PCM_HW_PARAM_CHANNELS, -1)) < 0)
 439                goto din_exit;
 440
 441din_exit:
 442        mutex_unlock(&chip->mode_mutex);
 443        return err;
 444}
 445
 446
 447
 448#ifndef ECHOCARD_HAS_VMIXER     /* See the note in snd_echo_new_pcm() */
 449
 450static int pcm_digital_out_open(struct snd_pcm_substream *substream)
 451{
 452        struct echoaudio *chip = snd_pcm_substream_chip(substream);
 453        int err, max_channels;
 454
 455        max_channels = num_digital_busses_out(chip) - substream->number;
 456        mutex_lock(&chip->mode_mutex);
 457        if (chip->digital_mode == DIGITAL_MODE_ADAT)
 458                err = pcm_open(substream, max_channels);
 459        else    /* If the card has ADAT, subtract the 6 channels
 460                 * that S/PDIF doesn't have
 461                 */
 462                err = pcm_open(substream, max_channels - ECHOCARD_HAS_ADAT);
 463
 464        if (err < 0)
 465                goto dout_exit;
 466
 467        if ((err = snd_pcm_hw_rule_add(substream->runtime, 0,
 468                                       SNDRV_PCM_HW_PARAM_CHANNELS,
 469                                       hw_rule_playback_channels_by_format,
 470                                       NULL, SNDRV_PCM_HW_PARAM_FORMAT,
 471                                       -1)) < 0)
 472                goto dout_exit;
 473        if ((err = snd_pcm_hw_rule_add(substream->runtime, 0,
 474                                       SNDRV_PCM_HW_PARAM_FORMAT,
 475                                       hw_rule_playback_format_by_channels,
 476                                       NULL, SNDRV_PCM_HW_PARAM_CHANNELS,
 477                                       -1)) < 0)
 478                goto dout_exit;
 479
 480dout_exit:
 481        mutex_unlock(&chip->mode_mutex);
 482        return err;
 483}
 484
 485#endif /* !ECHOCARD_HAS_VMIXER */
 486
 487#endif /* ECHOCARD_HAS_DIGITAL_IO */
 488
 489
 490
 491static int pcm_close(struct snd_pcm_substream *substream)
 492{
 493        struct echoaudio *chip = snd_pcm_substream_chip(substream);
 494
 495        /* Nothing to do here. Audio is already off and pipe will be
 496         * freed by its callback
 497         */
 498
 499        mutex_lock(&chip->mode_mutex);
 500
 501        dev_dbg(chip->card->dev, "pcm_open opencount=%d can_set_rate=%d, rate_set=%d",
 502                chip->opencount, chip->can_set_rate, chip->rate_set);
 503
 504        chip->opencount--;
 505
 506        switch (chip->opencount) {
 507        case 1:
 508                chip->can_set_rate = 1;
 509                break;
 510
 511        case 0:
 512                chip->rate_set = 0;
 513                break;
 514        }
 515
 516        mutex_unlock(&chip->mode_mutex);
 517        return 0;
 518}
 519
 520
 521
 522/* Channel allocation and scatter-gather list setup */
 523static int init_engine(struct snd_pcm_substream *substream,
 524                       struct snd_pcm_hw_params *hw_params,
 525                       int pipe_index, int interleave)
 526{
 527        struct echoaudio *chip;
 528        int err, per, rest, page, edge, offs;
 529        struct audiopipe *pipe;
 530
 531        chip = snd_pcm_substream_chip(substream);
 532        pipe = (struct audiopipe *) substream->runtime->private_data;
 533
 534        /* Sets up che hardware. If it's already initialized, reset and
 535         * redo with the new parameters
 536         */
 537        spin_lock_irq(&chip->lock);
 538        if (pipe->index >= 0) {
 539                dev_dbg(chip->card->dev, "hwp_ie free(%d)\n", pipe->index);
 540                err = free_pipes(chip, pipe);
 541                snd_BUG_ON(err);
 542                chip->substream[pipe->index] = NULL;
 543        }
 544
 545        err = allocate_pipes(chip, pipe, pipe_index, interleave);
 546        if (err < 0) {
 547                spin_unlock_irq(&chip->lock);
 548                dev_err(chip->card->dev, "allocate_pipes(%d) err=%d\n",
 549                        pipe_index, err);
 550                return err;
 551        }
 552        spin_unlock_irq(&chip->lock);
 553        dev_dbg(chip->card->dev, "allocate_pipes()=%d\n", pipe_index);
 554
 555        dev_dbg(chip->card->dev,
 556                "pcm_hw_params (bufsize=%dB periods=%d persize=%dB)\n",
 557                params_buffer_bytes(hw_params), params_periods(hw_params),
 558                params_period_bytes(hw_params));
 559
 560        sglist_init(chip, pipe);
 561        edge = PAGE_SIZE;
 562        for (offs = page = per = 0; offs < params_buffer_bytes(hw_params);
 563             per++) {
 564                rest = params_period_bytes(hw_params);
 565                if (offs + rest > params_buffer_bytes(hw_params))
 566                        rest = params_buffer_bytes(hw_params) - offs;
 567                while (rest) {
 568                        dma_addr_t addr;
 569                        addr = snd_pcm_sgbuf_get_addr(substream, offs);
 570                        if (rest <= edge - offs) {
 571                                sglist_add_mapping(chip, pipe, addr, rest);
 572                                sglist_add_irq(chip, pipe);
 573                                offs += rest;
 574                                rest = 0;
 575                        } else {
 576                                sglist_add_mapping(chip, pipe, addr,
 577                                                   edge - offs);
 578                                rest -= edge - offs;
 579                                offs = edge;
 580                        }
 581                        if (offs == edge) {
 582                                edge += PAGE_SIZE;
 583                                page++;
 584                        }
 585                }
 586        }
 587
 588        /* Close the ring buffer */
 589        sglist_wrap(chip, pipe);
 590
 591        /* This stuff is used by the irq handler, so it must be
 592         * initialized before chip->substream
 593         */
 594        pipe->last_period = 0;
 595        pipe->last_counter = 0;
 596        pipe->position = 0;
 597        smp_wmb();
 598        chip->substream[pipe_index] = substream;
 599        chip->rate_set = 1;
 600        spin_lock_irq(&chip->lock);
 601        set_sample_rate(chip, hw_params->rate_num / hw_params->rate_den);
 602        spin_unlock_irq(&chip->lock);
 603        return 0;
 604}
 605
 606
 607
 608static int pcm_analog_in_hw_params(struct snd_pcm_substream *substream,
 609                                   struct snd_pcm_hw_params *hw_params)
 610{
 611        struct echoaudio *chip = snd_pcm_substream_chip(substream);
 612
 613        return init_engine(substream, hw_params, px_analog_in(chip) +
 614                        substream->number, params_channels(hw_params));
 615}
 616
 617
 618
 619static int pcm_analog_out_hw_params(struct snd_pcm_substream *substream,
 620                                    struct snd_pcm_hw_params *hw_params)
 621{
 622        return init_engine(substream, hw_params, substream->number,
 623                           params_channels(hw_params));
 624}
 625
 626
 627
 628#ifdef ECHOCARD_HAS_DIGITAL_IO
 629
 630static int pcm_digital_in_hw_params(struct snd_pcm_substream *substream,
 631                                    struct snd_pcm_hw_params *hw_params)
 632{
 633        struct echoaudio *chip = snd_pcm_substream_chip(substream);
 634
 635        return init_engine(substream, hw_params, px_digital_in(chip) +
 636                        substream->number, params_channels(hw_params));
 637}
 638
 639
 640
 641#ifndef ECHOCARD_HAS_VMIXER     /* See the note in snd_echo_new_pcm() */
 642static int pcm_digital_out_hw_params(struct snd_pcm_substream *substream,
 643                                     struct snd_pcm_hw_params *hw_params)
 644{
 645        struct echoaudio *chip = snd_pcm_substream_chip(substream);
 646
 647        return init_engine(substream, hw_params, px_digital_out(chip) +
 648                        substream->number, params_channels(hw_params));
 649}
 650#endif /* !ECHOCARD_HAS_VMIXER */
 651
 652#endif /* ECHOCARD_HAS_DIGITAL_IO */
 653
 654
 655
 656static int pcm_hw_free(struct snd_pcm_substream *substream)
 657{
 658        struct echoaudio *chip;
 659        struct audiopipe *pipe;
 660
 661        chip = snd_pcm_substream_chip(substream);
 662        pipe = (struct audiopipe *) substream->runtime->private_data;
 663
 664        spin_lock_irq(&chip->lock);
 665        if (pipe->index >= 0) {
 666                dev_dbg(chip->card->dev, "pcm_hw_free(%d)\n", pipe->index);
 667                free_pipes(chip, pipe);
 668                chip->substream[pipe->index] = NULL;
 669                pipe->index = -1;
 670        }
 671        spin_unlock_irq(&chip->lock);
 672
 673        return 0;
 674}
 675
 676
 677
 678static int pcm_prepare(struct snd_pcm_substream *substream)
 679{
 680        struct echoaudio *chip = snd_pcm_substream_chip(substream);
 681        struct snd_pcm_runtime *runtime = substream->runtime;
 682        struct audioformat format;
 683        int pipe_index = ((struct audiopipe *)runtime->private_data)->index;
 684
 685        dev_dbg(chip->card->dev, "Prepare rate=%d format=%d channels=%d\n",
 686                runtime->rate, runtime->format, runtime->channels);
 687        format.interleave = runtime->channels;
 688        format.data_are_bigendian = 0;
 689        format.mono_to_stereo = 0;
 690        switch (runtime->format) {
 691        case SNDRV_PCM_FORMAT_U8:
 692                format.bits_per_sample = 8;
 693                break;
 694        case SNDRV_PCM_FORMAT_S16_LE:
 695                format.bits_per_sample = 16;
 696                break;
 697        case SNDRV_PCM_FORMAT_S24_3LE:
 698                format.bits_per_sample = 24;
 699                break;
 700        case SNDRV_PCM_FORMAT_S32_BE:
 701                format.data_are_bigendian = 1;
 702                fallthrough;
 703        case SNDRV_PCM_FORMAT_S32_LE:
 704                format.bits_per_sample = 32;
 705                break;
 706        default:
 707                dev_err(chip->card->dev,
 708                        "Prepare error: unsupported format %d\n",
 709                        runtime->format);
 710                return -EINVAL;
 711        }
 712
 713        if (snd_BUG_ON(pipe_index >= px_num(chip)))
 714                return -EINVAL;
 715
 716        /*
 717         * We passed checks we can do independently; now take
 718         * exclusive control
 719         */
 720
 721        spin_lock_irq(&chip->lock);
 722
 723        if (snd_BUG_ON(!is_pipe_allocated(chip, pipe_index))) {
 724                spin_unlock_irq(&chip->lock);
 725                return -EINVAL;
 726        }
 727
 728        set_audio_format(chip, pipe_index, &format);
 729        spin_unlock_irq(&chip->lock);
 730
 731        return 0;
 732}
 733
 734
 735
 736static int pcm_trigger(struct snd_pcm_substream *substream, int cmd)
 737{
 738        struct echoaudio *chip = snd_pcm_substream_chip(substream);
 739        struct audiopipe *pipe;
 740        int i, err;
 741        u32 channelmask = 0;
 742        struct snd_pcm_substream *s;
 743
 744        snd_pcm_group_for_each_entry(s, substream) {
 745                for (i = 0; i < DSP_MAXPIPES; i++) {
 746                        if (s == chip->substream[i]) {
 747                                channelmask |= 1 << i;
 748                                snd_pcm_trigger_done(s, substream);
 749                        }
 750                }
 751        }
 752
 753        spin_lock(&chip->lock);
 754        switch (cmd) {
 755        case SNDRV_PCM_TRIGGER_RESUME:
 756        case SNDRV_PCM_TRIGGER_START:
 757        case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
 758                for (i = 0; i < DSP_MAXPIPES; i++) {
 759                        if (channelmask & (1 << i)) {
 760                                pipe = chip->substream[i]->runtime->private_data;
 761                                switch (pipe->state) {
 762                                case PIPE_STATE_STOPPED:
 763                                        pipe->last_period = 0;
 764                                        pipe->last_counter = 0;
 765                                        pipe->position = 0;
 766                                        *pipe->dma_counter = 0;
 767                                        fallthrough;
 768                                case PIPE_STATE_PAUSED:
 769                                        pipe->state = PIPE_STATE_STARTED;
 770                                        break;
 771                                case PIPE_STATE_STARTED:
 772                                        break;
 773                                }
 774                        }
 775                }
 776                err = start_transport(chip, channelmask,
 777                                      chip->pipe_cyclic_mask);
 778                break;
 779        case SNDRV_PCM_TRIGGER_SUSPEND:
 780        case SNDRV_PCM_TRIGGER_STOP:
 781                for (i = 0; i < DSP_MAXPIPES; i++) {
 782                        if (channelmask & (1 << i)) {
 783                                pipe = chip->substream[i]->runtime->private_data;
 784                                pipe->state = PIPE_STATE_STOPPED;
 785                        }
 786                }
 787                err = stop_transport(chip, channelmask);
 788                break;
 789        case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
 790                for (i = 0; i < DSP_MAXPIPES; i++) {
 791                        if (channelmask & (1 << i)) {
 792                                pipe = chip->substream[i]->runtime->private_data;
 793                                pipe->state = PIPE_STATE_PAUSED;
 794                        }
 795                }
 796                err = pause_transport(chip, channelmask);
 797                break;
 798        default:
 799                err = -EINVAL;
 800        }
 801        spin_unlock(&chip->lock);
 802        return err;
 803}
 804
 805
 806
 807static snd_pcm_uframes_t pcm_pointer(struct snd_pcm_substream *substream)
 808{
 809        struct snd_pcm_runtime *runtime = substream->runtime;
 810        struct audiopipe *pipe = runtime->private_data;
 811        u32 counter, step;
 812
 813        /*
 814         * IRQ handling runs concurrently. Do not share tracking of
 815         * counter with it, which would race or require locking
 816         */
 817
 818        counter = le32_to_cpu(*pipe->dma_counter);  /* presumed atomic */
 819
 820        step = counter - pipe->last_counter;  /* handles wrapping */
 821        pipe->last_counter = counter;
 822
 823        /* counter doesn't neccessarily wrap on a multiple of
 824         * buffer_size, so can't derive the position; must
 825         * accumulate */
 826
 827        pipe->position += step;
 828        pipe->position %= frames_to_bytes(runtime, runtime->buffer_size); /* wrap */
 829
 830        return bytes_to_frames(runtime, pipe->position);
 831}
 832
 833
 834
 835/* pcm *_ops structures */
 836static const struct snd_pcm_ops analog_playback_ops = {
 837        .open = pcm_analog_out_open,
 838        .close = pcm_close,
 839        .hw_params = pcm_analog_out_hw_params,
 840        .hw_free = pcm_hw_free,
 841        .prepare = pcm_prepare,
 842        .trigger = pcm_trigger,
 843        .pointer = pcm_pointer,
 844};
 845static const struct snd_pcm_ops analog_capture_ops = {
 846        .open = pcm_analog_in_open,
 847        .close = pcm_close,
 848        .hw_params = pcm_analog_in_hw_params,
 849        .hw_free = pcm_hw_free,
 850        .prepare = pcm_prepare,
 851        .trigger = pcm_trigger,
 852        .pointer = pcm_pointer,
 853};
 854#ifdef ECHOCARD_HAS_DIGITAL_IO
 855#ifndef ECHOCARD_HAS_VMIXER
 856static const struct snd_pcm_ops digital_playback_ops = {
 857        .open = pcm_digital_out_open,
 858        .close = pcm_close,
 859        .hw_params = pcm_digital_out_hw_params,
 860        .hw_free = pcm_hw_free,
 861        .prepare = pcm_prepare,
 862        .trigger = pcm_trigger,
 863        .pointer = pcm_pointer,
 864};
 865#endif /* !ECHOCARD_HAS_VMIXER */
 866static const struct snd_pcm_ops digital_capture_ops = {
 867        .open = pcm_digital_in_open,
 868        .close = pcm_close,
 869        .hw_params = pcm_digital_in_hw_params,
 870        .hw_free = pcm_hw_free,
 871        .prepare = pcm_prepare,
 872        .trigger = pcm_trigger,
 873        .pointer = pcm_pointer,
 874};
 875#endif /* ECHOCARD_HAS_DIGITAL_IO */
 876
 877
 878
 879/* Preallocate memory only for the first substream because it's the most
 880 * used one
 881 */
 882static void snd_echo_preallocate_pages(struct snd_pcm *pcm, struct device *dev)
 883{
 884        struct snd_pcm_substream *ss;
 885        int stream;
 886
 887        for (stream = 0; stream < 2; stream++)
 888                for (ss = pcm->streams[stream].substream; ss; ss = ss->next)
 889                        snd_pcm_set_managed_buffer(ss, SNDRV_DMA_TYPE_DEV_SG,
 890                                                   dev,
 891                                                   ss->number ? 0 : 128<<10,
 892                                                   256<<10);
 893}
 894
 895
 896
 897/*<--snd_echo_probe() */
 898static int snd_echo_new_pcm(struct echoaudio *chip)
 899{
 900        struct snd_pcm *pcm;
 901        int err;
 902
 903#ifdef ECHOCARD_HAS_VMIXER
 904        /* This card has a Vmixer, that is there is no direct mapping from PCM
 905        streams to physical outputs. The user can mix the streams as he wishes
 906        via control interface and it's possible to send any stream to any
 907        output, thus it makes no sense to keep analog and digital outputs
 908        separated */
 909
 910        /* PCM#0 Virtual outputs and analog inputs */
 911        if ((err = snd_pcm_new(chip->card, "PCM", 0, num_pipes_out(chip),
 912                                num_analog_busses_in(chip), &pcm)) < 0)
 913                return err;
 914        pcm->private_data = chip;
 915        chip->analog_pcm = pcm;
 916        strcpy(pcm->name, chip->card->shortname);
 917        snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &analog_playback_ops);
 918        snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &analog_capture_ops);
 919        snd_echo_preallocate_pages(pcm, &chip->pci->dev);
 920
 921#ifdef ECHOCARD_HAS_DIGITAL_IO
 922        /* PCM#1 Digital inputs, no outputs */
 923        if ((err = snd_pcm_new(chip->card, "Digital PCM", 1, 0,
 924                               num_digital_busses_in(chip), &pcm)) < 0)
 925                return err;
 926        pcm->private_data = chip;
 927        chip->digital_pcm = pcm;
 928        strcpy(pcm->name, chip->card->shortname);
 929        snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &digital_capture_ops);
 930        snd_echo_preallocate_pages(pcm, &chip->pci->dev);
 931#endif /* ECHOCARD_HAS_DIGITAL_IO */
 932
 933#else /* ECHOCARD_HAS_VMIXER */
 934
 935        /* The card can manage substreams formed by analog and digital channels
 936        at the same time, but I prefer to keep analog and digital channels
 937        separated, because that mixed thing is confusing and useless. So we
 938        register two PCM devices: */
 939
 940        /* PCM#0 Analog i/o */
 941        if ((err = snd_pcm_new(chip->card, "Analog PCM", 0,
 942                               num_analog_busses_out(chip),
 943                               num_analog_busses_in(chip), &pcm)) < 0)
 944                return err;
 945        pcm->private_data = chip;
 946        chip->analog_pcm = pcm;
 947        strcpy(pcm->name, chip->card->shortname);
 948        snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &analog_playback_ops);
 949        snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &analog_capture_ops);
 950        snd_echo_preallocate_pages(pcm, &chip->pci->dev);
 951
 952#ifdef ECHOCARD_HAS_DIGITAL_IO
 953        /* PCM#1 Digital i/o */
 954        if ((err = snd_pcm_new(chip->card, "Digital PCM", 1,
 955                               num_digital_busses_out(chip),
 956                               num_digital_busses_in(chip), &pcm)) < 0)
 957                return err;
 958        pcm->private_data = chip;
 959        chip->digital_pcm = pcm;
 960        strcpy(pcm->name, chip->card->shortname);
 961        snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &digital_playback_ops);
 962        snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &digital_capture_ops);
 963        snd_echo_preallocate_pages(pcm, &chip->pci->dev);
 964#endif /* ECHOCARD_HAS_DIGITAL_IO */
 965
 966#endif /* ECHOCARD_HAS_VMIXER */
 967
 968        return 0;
 969}
 970
 971
 972
 973
 974/******************************************************************************
 975        Control interface
 976******************************************************************************/
 977
 978#if !defined(ECHOCARD_HAS_VMIXER) || defined(ECHOCARD_HAS_LINE_OUT_GAIN)
 979
 980/******************* PCM output volume *******************/
 981static int snd_echo_output_gain_info(struct snd_kcontrol *kcontrol,
 982                                     struct snd_ctl_elem_info *uinfo)
 983{
 984        struct echoaudio *chip;
 985
 986        chip = snd_kcontrol_chip(kcontrol);
 987        uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
 988        uinfo->count = num_busses_out(chip);
 989        uinfo->value.integer.min = ECHOGAIN_MINOUT;
 990        uinfo->value.integer.max = ECHOGAIN_MAXOUT;
 991        return 0;
 992}
 993
 994static int snd_echo_output_gain_get(struct snd_kcontrol *kcontrol,
 995                                    struct snd_ctl_elem_value *ucontrol)
 996{
 997        struct echoaudio *chip;
 998        int c;
 999
1000        chip = snd_kcontrol_chip(kcontrol);
1001        for (c = 0; c < num_busses_out(chip); c++)
1002                ucontrol->value.integer.value[c] = chip->output_gain[c];
1003        return 0;
1004}
1005
1006static int snd_echo_output_gain_put(struct snd_kcontrol *kcontrol,
1007                                    struct snd_ctl_elem_value *ucontrol)
1008{
1009        struct echoaudio *chip;
1010        int c, changed, gain;
1011
1012        changed = 0;
1013        chip = snd_kcontrol_chip(kcontrol);
1014        spin_lock_irq(&chip->lock);
1015        for (c = 0; c < num_busses_out(chip); c++) {
1016                gain = ucontrol->value.integer.value[c];
1017                /* Ignore out of range values */
1018                if (gain < ECHOGAIN_MINOUT || gain > ECHOGAIN_MAXOUT)
1019                        continue;
1020                if (chip->output_gain[c] != gain) {
1021                        set_output_gain(chip, c, gain);
1022                        changed = 1;
1023                }
1024        }
1025        if (changed)
1026                update_output_line_level(chip);
1027        spin_unlock_irq(&chip->lock);
1028        return changed;
1029}
1030
1031#ifdef ECHOCARD_HAS_LINE_OUT_GAIN
1032/* On the Mia this one controls the line-out volume */
1033static const struct snd_kcontrol_new snd_echo_line_output_gain = {
1034        .name = "Line Playback Volume",
1035        .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1036        .access = SNDRV_CTL_ELEM_ACCESS_READWRITE |
1037                  SNDRV_CTL_ELEM_ACCESS_TLV_READ,
1038        .info = snd_echo_output_gain_info,
1039        .get = snd_echo_output_gain_get,
1040        .put = snd_echo_output_gain_put,
1041        .tlv = {.p = db_scale_output_gain},
1042};
1043#else
1044static const struct snd_kcontrol_new snd_echo_pcm_output_gain = {
1045        .name = "PCM Playback Volume",
1046        .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1047        .access = SNDRV_CTL_ELEM_ACCESS_READWRITE | SNDRV_CTL_ELEM_ACCESS_TLV_READ,
1048        .info = snd_echo_output_gain_info,
1049        .get = snd_echo_output_gain_get,
1050        .put = snd_echo_output_gain_put,
1051        .tlv = {.p = db_scale_output_gain},
1052};
1053#endif
1054
1055#endif /* !ECHOCARD_HAS_VMIXER || ECHOCARD_HAS_LINE_OUT_GAIN */
1056
1057
1058
1059#ifdef ECHOCARD_HAS_INPUT_GAIN
1060
1061/******************* Analog input volume *******************/
1062static int snd_echo_input_gain_info(struct snd_kcontrol *kcontrol,
1063                                    struct snd_ctl_elem_info *uinfo)
1064{
1065        struct echoaudio *chip;
1066
1067        chip = snd_kcontrol_chip(kcontrol);
1068        uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
1069        uinfo->count = num_analog_busses_in(chip);
1070        uinfo->value.integer.min = ECHOGAIN_MININP;
1071        uinfo->value.integer.max = ECHOGAIN_MAXINP;
1072        return 0;
1073}
1074
1075static int snd_echo_input_gain_get(struct snd_kcontrol *kcontrol,
1076                                   struct snd_ctl_elem_value *ucontrol)
1077{
1078        struct echoaudio *chip;
1079        int c;
1080
1081        chip = snd_kcontrol_chip(kcontrol);
1082        for (c = 0; c < num_analog_busses_in(chip); c++)
1083                ucontrol->value.integer.value[c] = chip->input_gain[c];
1084        return 0;
1085}
1086
1087static int snd_echo_input_gain_put(struct snd_kcontrol *kcontrol,
1088                                   struct snd_ctl_elem_value *ucontrol)
1089{
1090        struct echoaudio *chip;
1091        int c, gain, changed;
1092
1093        changed = 0;
1094        chip = snd_kcontrol_chip(kcontrol);
1095        spin_lock_irq(&chip->lock);
1096        for (c = 0; c < num_analog_busses_in(chip); c++) {
1097                gain = ucontrol->value.integer.value[c];
1098                /* Ignore out of range values */
1099                if (gain < ECHOGAIN_MININP || gain > ECHOGAIN_MAXINP)
1100                        continue;
1101                if (chip->input_gain[c] != gain) {
1102                        set_input_gain(chip, c, gain);
1103                        changed = 1;
1104                }
1105        }
1106        if (changed)
1107                update_input_line_level(chip);
1108        spin_unlock_irq(&chip->lock);
1109        return changed;
1110}
1111
1112static const DECLARE_TLV_DB_SCALE(db_scale_input_gain, -2500, 50, 0);
1113
1114static const struct snd_kcontrol_new snd_echo_line_input_gain = {
1115        .name = "Line Capture Volume",
1116        .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1117        .access = SNDRV_CTL_ELEM_ACCESS_READWRITE | SNDRV_CTL_ELEM_ACCESS_TLV_READ,
1118        .info = snd_echo_input_gain_info,
1119        .get = snd_echo_input_gain_get,
1120        .put = snd_echo_input_gain_put,
1121        .tlv = {.p = db_scale_input_gain},
1122};
1123
1124#endif /* ECHOCARD_HAS_INPUT_GAIN */
1125
1126
1127
1128#ifdef ECHOCARD_HAS_OUTPUT_NOMINAL_LEVEL
1129
1130/************ Analog output nominal level (+4dBu / -10dBV) ***************/
1131static int snd_echo_output_nominal_info (struct snd_kcontrol *kcontrol,
1132                                         struct snd_ctl_elem_info *uinfo)
1133{
1134        struct echoaudio *chip;
1135
1136        chip = snd_kcontrol_chip(kcontrol);
1137        uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
1138        uinfo->count = num_analog_busses_out(chip);
1139        uinfo->value.integer.min = 0;
1140        uinfo->value.integer.max = 1;
1141        return 0;
1142}
1143
1144static int snd_echo_output_nominal_get(struct snd_kcontrol *kcontrol,
1145                                       struct snd_ctl_elem_value *ucontrol)
1146{
1147        struct echoaudio *chip;
1148        int c;
1149
1150        chip = snd_kcontrol_chip(kcontrol);
1151        for (c = 0; c < num_analog_busses_out(chip); c++)
1152                ucontrol->value.integer.value[c] = chip->nominal_level[c];
1153        return 0;
1154}
1155
1156static int snd_echo_output_nominal_put(struct snd_kcontrol *kcontrol,
1157                                       struct snd_ctl_elem_value *ucontrol)
1158{
1159        struct echoaudio *chip;
1160        int c, changed;
1161
1162        changed = 0;
1163        chip = snd_kcontrol_chip(kcontrol);
1164        spin_lock_irq(&chip->lock);
1165        for (c = 0; c < num_analog_busses_out(chip); c++) {
1166                if (chip->nominal_level[c] != ucontrol->value.integer.value[c]) {
1167                        set_nominal_level(chip, c,
1168                                          ucontrol->value.integer.value[c]);
1169                        changed = 1;
1170                }
1171        }
1172        if (changed)
1173                update_output_line_level(chip);
1174        spin_unlock_irq(&chip->lock);
1175        return changed;
1176}
1177
1178static const struct snd_kcontrol_new snd_echo_output_nominal_level = {
1179        .name = "Line Playback Switch (-10dBV)",
1180        .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1181        .info = snd_echo_output_nominal_info,
1182        .get = snd_echo_output_nominal_get,
1183        .put = snd_echo_output_nominal_put,
1184};
1185
1186#endif /* ECHOCARD_HAS_OUTPUT_NOMINAL_LEVEL */
1187
1188
1189
1190#ifdef ECHOCARD_HAS_INPUT_NOMINAL_LEVEL
1191
1192/*************** Analog input nominal level (+4dBu / -10dBV) ***************/
1193static int snd_echo_input_nominal_info(struct snd_kcontrol *kcontrol,
1194                                       struct snd_ctl_elem_info *uinfo)
1195{
1196        struct echoaudio *chip;
1197
1198        chip = snd_kcontrol_chip(kcontrol);
1199        uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
1200        uinfo->count = num_analog_busses_in(chip);
1201        uinfo->value.integer.min = 0;
1202        uinfo->value.integer.max = 1;
1203        return 0;
1204}
1205
1206static int snd_echo_input_nominal_get(struct snd_kcontrol *kcontrol,
1207                                      struct snd_ctl_elem_value *ucontrol)
1208{
1209        struct echoaudio *chip;
1210        int c;
1211
1212        chip = snd_kcontrol_chip(kcontrol);
1213        for (c = 0; c < num_analog_busses_in(chip); c++)
1214                ucontrol->value.integer.value[c] =
1215                        chip->nominal_level[bx_analog_in(chip) + c];
1216        return 0;
1217}
1218
1219static int snd_echo_input_nominal_put(struct snd_kcontrol *kcontrol,
1220                                      struct snd_ctl_elem_value *ucontrol)
1221{
1222        struct echoaudio *chip;
1223        int c, changed;
1224
1225        changed = 0;
1226        chip = snd_kcontrol_chip(kcontrol);
1227        spin_lock_irq(&chip->lock);
1228        for (c = 0; c < num_analog_busses_in(chip); c++) {
1229                if (chip->nominal_level[bx_analog_in(chip) + c] !=
1230                    ucontrol->value.integer.value[c]) {
1231                        set_nominal_level(chip, bx_analog_in(chip) + c,
1232                                          ucontrol->value.integer.value[c]);
1233                        changed = 1;
1234                }
1235        }
1236        if (changed)
1237                update_output_line_level(chip); /* "Output" is not a mistake
1238                                                 * here.
1239                                                 */
1240        spin_unlock_irq(&chip->lock);
1241        return changed;
1242}
1243
1244static const struct snd_kcontrol_new snd_echo_intput_nominal_level = {
1245        .name = "Line Capture Switch (-10dBV)",
1246        .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1247        .info = snd_echo_input_nominal_info,
1248        .get = snd_echo_input_nominal_get,
1249        .put = snd_echo_input_nominal_put,
1250};
1251
1252#endif /* ECHOCARD_HAS_INPUT_NOMINAL_LEVEL */
1253
1254
1255
1256#ifdef ECHOCARD_HAS_MONITOR
1257
1258/******************* Monitor mixer *******************/
1259static int snd_echo_mixer_info(struct snd_kcontrol *kcontrol,
1260                               struct snd_ctl_elem_info *uinfo)
1261{
1262        uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
1263        uinfo->count = 1;
1264        uinfo->value.integer.min = ECHOGAIN_MINOUT;
1265        uinfo->value.integer.max = ECHOGAIN_MAXOUT;
1266        return 0;
1267}
1268
1269static int snd_echo_mixer_get(struct snd_kcontrol *kcontrol,
1270                              struct snd_ctl_elem_value *ucontrol)
1271{
1272        struct echoaudio *chip = snd_kcontrol_chip(kcontrol);
1273        unsigned int out = ucontrol->id.index / num_busses_in(chip);
1274        unsigned int in = ucontrol->id.index % num_busses_in(chip);
1275
1276        if (out >= ECHO_MAXAUDIOOUTPUTS || in >= ECHO_MAXAUDIOINPUTS)
1277                return -EINVAL;
1278
1279        ucontrol->value.integer.value[0] = chip->monitor_gain[out][in];
1280        return 0;
1281}
1282
1283static int snd_echo_mixer_put(struct snd_kcontrol *kcontrol,
1284                              struct snd_ctl_elem_value *ucontrol)
1285{
1286        struct echoaudio *chip;
1287        int changed,  gain;
1288        unsigned int out, in;
1289
1290        changed = 0;
1291        chip = snd_kcontrol_chip(kcontrol);
1292        out = ucontrol->id.index / num_busses_in(chip);
1293        in = ucontrol->id.index % num_busses_in(chip);
1294        if (out >= ECHO_MAXAUDIOOUTPUTS || in >= ECHO_MAXAUDIOINPUTS)
1295                return -EINVAL;
1296        gain = ucontrol->value.integer.value[0];
1297        if (gain < ECHOGAIN_MINOUT || gain > ECHOGAIN_MAXOUT)
1298                return -EINVAL;
1299        if (chip->monitor_gain[out][in] != gain) {
1300                spin_lock_irq(&chip->lock);
1301                set_monitor_gain(chip, out, in, gain);
1302                update_output_line_level(chip);
1303                spin_unlock_irq(&chip->lock);
1304                changed = 1;
1305        }
1306        return changed;
1307}
1308
1309static struct snd_kcontrol_new snd_echo_monitor_mixer = {
1310        .name = "Monitor Mixer Volume",
1311        .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1312        .access = SNDRV_CTL_ELEM_ACCESS_READWRITE | SNDRV_CTL_ELEM_ACCESS_TLV_READ,
1313        .info = snd_echo_mixer_info,
1314        .get = snd_echo_mixer_get,
1315        .put = snd_echo_mixer_put,
1316        .tlv = {.p = db_scale_output_gain},
1317};
1318
1319#endif /* ECHOCARD_HAS_MONITOR */
1320
1321
1322
1323#ifdef ECHOCARD_HAS_VMIXER
1324
1325/******************* Vmixer *******************/
1326static int snd_echo_vmixer_info(struct snd_kcontrol *kcontrol,
1327                                struct snd_ctl_elem_info *uinfo)
1328{
1329        uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
1330        uinfo->count = 1;
1331        uinfo->value.integer.min = ECHOGAIN_MINOUT;
1332        uinfo->value.integer.max = ECHOGAIN_MAXOUT;
1333        return 0;
1334}
1335
1336static int snd_echo_vmixer_get(struct snd_kcontrol *kcontrol,
1337                               struct snd_ctl_elem_value *ucontrol)
1338{
1339        struct echoaudio *chip;
1340
1341        chip = snd_kcontrol_chip(kcontrol);
1342        ucontrol->value.integer.value[0] =
1343                chip->vmixer_gain[ucontrol->id.index / num_pipes_out(chip)]
1344                        [ucontrol->id.index % num_pipes_out(chip)];
1345        return 0;
1346}
1347
1348static int snd_echo_vmixer_put(struct snd_kcontrol *kcontrol,
1349                               struct snd_ctl_elem_value *ucontrol)
1350{
1351        struct echoaudio *chip;
1352        int gain, changed;
1353        short vch, out;
1354
1355        changed = 0;
1356        chip = snd_kcontrol_chip(kcontrol);
1357        out = ucontrol->id.index / num_pipes_out(chip);
1358        vch = ucontrol->id.index % num_pipes_out(chip);
1359        gain = ucontrol->value.integer.value[0];
1360        if (gain < ECHOGAIN_MINOUT || gain > ECHOGAIN_MAXOUT)
1361                return -EINVAL;
1362        if (chip->vmixer_gain[out][vch] != ucontrol->value.integer.value[0]) {
1363                spin_lock_irq(&chip->lock);
1364                set_vmixer_gain(chip, out, vch, ucontrol->value.integer.value[0]);
1365                update_vmixer_level(chip);
1366                spin_unlock_irq(&chip->lock);
1367                changed = 1;
1368        }
1369        return changed;
1370}
1371
1372static struct snd_kcontrol_new snd_echo_vmixer = {
1373        .name = "VMixer Volume",
1374        .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1375        .access = SNDRV_CTL_ELEM_ACCESS_READWRITE | SNDRV_CTL_ELEM_ACCESS_TLV_READ,
1376        .info = snd_echo_vmixer_info,
1377        .get = snd_echo_vmixer_get,
1378        .put = snd_echo_vmixer_put,
1379        .tlv = {.p = db_scale_output_gain},
1380};
1381
1382#endif /* ECHOCARD_HAS_VMIXER */
1383
1384
1385
1386#ifdef ECHOCARD_HAS_DIGITAL_MODE_SWITCH
1387
1388/******************* Digital mode switch *******************/
1389static int snd_echo_digital_mode_info(struct snd_kcontrol *kcontrol,
1390                                      struct snd_ctl_elem_info *uinfo)
1391{
1392        static const char * const names[4] = {
1393                "S/PDIF Coaxial", "S/PDIF Optical", "ADAT Optical",
1394                "S/PDIF Cdrom"
1395        };
1396        struct echoaudio *chip;
1397
1398        chip = snd_kcontrol_chip(kcontrol);
1399        return snd_ctl_enum_info(uinfo, 1, chip->num_digital_modes, names);
1400}
1401
1402static int snd_echo_digital_mode_get(struct snd_kcontrol *kcontrol,
1403                                     struct snd_ctl_elem_value *ucontrol)
1404{
1405        struct echoaudio *chip;
1406        int i, mode;
1407
1408        chip = snd_kcontrol_chip(kcontrol);
1409        mode = chip->digital_mode;
1410        for (i = chip->num_digital_modes - 1; i >= 0; i--)
1411                if (mode == chip->digital_mode_list[i]) {
1412                        ucontrol->value.enumerated.item[0] = i;
1413                        break;
1414                }
1415        return 0;
1416}
1417
1418static int snd_echo_digital_mode_put(struct snd_kcontrol *kcontrol,
1419                                     struct snd_ctl_elem_value *ucontrol)
1420{
1421        struct echoaudio *chip;
1422        int changed;
1423        unsigned short emode, dmode;
1424
1425        changed = 0;
1426        chip = snd_kcontrol_chip(kcontrol);
1427
1428        emode = ucontrol->value.enumerated.item[0];
1429        if (emode >= chip->num_digital_modes)
1430                return -EINVAL;
1431        dmode = chip->digital_mode_list[emode];
1432
1433        if (dmode != chip->digital_mode) {
1434                /* mode_mutex is required to make this operation atomic wrt
1435                pcm_digital_*_open() and set_input_clock() functions. */
1436                mutex_lock(&chip->mode_mutex);
1437
1438                /* Do not allow the user to change the digital mode when a pcm
1439                device is open because it also changes the number of channels
1440                and the allowed sample rates */
1441                if (chip->opencount) {
1442                        changed = -EAGAIN;
1443                } else {
1444                        changed = set_digital_mode(chip, dmode);
1445                        /* If we had to change the clock source, report it */
1446                        if (changed > 0 && chip->clock_src_ctl) {
1447                                snd_ctl_notify(chip->card,
1448                                               SNDRV_CTL_EVENT_MASK_VALUE,
1449                                               &chip->clock_src_ctl->id);
1450                                dev_dbg(chip->card->dev,
1451                                        "SDM() =%d\n", changed);
1452                        }
1453                        if (changed >= 0)
1454                                changed = 1;    /* No errors */
1455                }
1456                mutex_unlock(&chip->mode_mutex);
1457        }
1458        return changed;
1459}
1460
1461static const struct snd_kcontrol_new snd_echo_digital_mode_switch = {
1462        .name = "Digital mode Switch",
1463        .iface = SNDRV_CTL_ELEM_IFACE_CARD,
1464        .info = snd_echo_digital_mode_info,
1465        .get = snd_echo_digital_mode_get,
1466        .put = snd_echo_digital_mode_put,
1467};
1468
1469#endif /* ECHOCARD_HAS_DIGITAL_MODE_SWITCH */
1470
1471
1472
1473#ifdef ECHOCARD_HAS_DIGITAL_IO
1474
1475/******************* S/PDIF mode switch *******************/
1476static int snd_echo_spdif_mode_info(struct snd_kcontrol *kcontrol,
1477                                    struct snd_ctl_elem_info *uinfo)
1478{
1479        static const char * const names[2] = {"Consumer", "Professional"};
1480
1481        return snd_ctl_enum_info(uinfo, 1, 2, names);
1482}
1483
1484static int snd_echo_spdif_mode_get(struct snd_kcontrol *kcontrol,
1485                                   struct snd_ctl_elem_value *ucontrol)
1486{
1487        struct echoaudio *chip;
1488
1489        chip = snd_kcontrol_chip(kcontrol);
1490        ucontrol->value.enumerated.item[0] = !!chip->professional_spdif;
1491        return 0;
1492}
1493
1494static int snd_echo_spdif_mode_put(struct snd_kcontrol *kcontrol,
1495                                   struct snd_ctl_elem_value *ucontrol)
1496{
1497        struct echoaudio *chip;
1498        int mode;
1499
1500        chip = snd_kcontrol_chip(kcontrol);
1501        mode = !!ucontrol->value.enumerated.item[0];
1502        if (mode != chip->professional_spdif) {
1503                spin_lock_irq(&chip->lock);
1504                set_professional_spdif(chip, mode);
1505                spin_unlock_irq(&chip->lock);
1506                return 1;
1507        }
1508        return 0;
1509}
1510
1511static const struct snd_kcontrol_new snd_echo_spdif_mode_switch = {
1512        .name = "S/PDIF mode Switch",
1513        .iface = SNDRV_CTL_ELEM_IFACE_CARD,
1514        .info = snd_echo_spdif_mode_info,
1515        .get = snd_echo_spdif_mode_get,
1516        .put = snd_echo_spdif_mode_put,
1517};
1518
1519#endif /* ECHOCARD_HAS_DIGITAL_IO */
1520
1521
1522
1523#ifdef ECHOCARD_HAS_EXTERNAL_CLOCK
1524
1525/******************* Select input clock source *******************/
1526static int snd_echo_clock_source_info(struct snd_kcontrol *kcontrol,
1527                                      struct snd_ctl_elem_info *uinfo)
1528{
1529        static const char * const names[8] = {
1530                "Internal", "Word", "Super", "S/PDIF", "ADAT", "ESync",
1531                "ESync96", "MTC"
1532        };
1533        struct echoaudio *chip;
1534
1535        chip = snd_kcontrol_chip(kcontrol);
1536        return snd_ctl_enum_info(uinfo, 1, chip->num_clock_sources, names);
1537}
1538
1539static int snd_echo_clock_source_get(struct snd_kcontrol *kcontrol,
1540                                     struct snd_ctl_elem_value *ucontrol)
1541{
1542        struct echoaudio *chip;
1543        int i, clock;
1544
1545        chip = snd_kcontrol_chip(kcontrol);
1546        clock = chip->input_clock;
1547
1548        for (i = 0; i < chip->num_clock_sources; i++)
1549                if (clock == chip->clock_source_list[i])
1550                        ucontrol->value.enumerated.item[0] = i;
1551
1552        return 0;
1553}
1554
1555static int snd_echo_clock_source_put(struct snd_kcontrol *kcontrol,
1556                                     struct snd_ctl_elem_value *ucontrol)
1557{
1558        struct echoaudio *chip;
1559        int changed;
1560        unsigned int eclock, dclock;
1561
1562        changed = 0;
1563        chip = snd_kcontrol_chip(kcontrol);
1564        eclock = ucontrol->value.enumerated.item[0];
1565        if (eclock >= chip->input_clock_types)
1566                return -EINVAL;
1567        dclock = chip->clock_source_list[eclock];
1568        if (chip->input_clock != dclock) {
1569                mutex_lock(&chip->mode_mutex);
1570                spin_lock_irq(&chip->lock);
1571                if ((changed = set_input_clock(chip, dclock)) == 0)
1572                        changed = 1;    /* no errors */
1573                spin_unlock_irq(&chip->lock);
1574                mutex_unlock(&chip->mode_mutex);
1575        }
1576
1577        if (changed < 0)
1578                dev_dbg(chip->card->dev,
1579                        "seticlk val%d err 0x%x\n", dclock, changed);
1580
1581        return changed;
1582}
1583
1584static const struct snd_kcontrol_new snd_echo_clock_source_switch = {
1585        .name = "Sample Clock Source",
1586        .iface = SNDRV_CTL_ELEM_IFACE_PCM,
1587        .info = snd_echo_clock_source_info,
1588        .get = snd_echo_clock_source_get,
1589        .put = snd_echo_clock_source_put,
1590};
1591
1592#endif /* ECHOCARD_HAS_EXTERNAL_CLOCK */
1593
1594
1595
1596#ifdef ECHOCARD_HAS_PHANTOM_POWER
1597
1598/******************* Phantom power switch *******************/
1599#define snd_echo_phantom_power_info     snd_ctl_boolean_mono_info
1600
1601static int snd_echo_phantom_power_get(struct snd_kcontrol *kcontrol,
1602                                      struct snd_ctl_elem_value *ucontrol)
1603{
1604        struct echoaudio *chip = snd_kcontrol_chip(kcontrol);
1605
1606        ucontrol->value.integer.value[0] = chip->phantom_power;
1607        return 0;
1608}
1609
1610static int snd_echo_phantom_power_put(struct snd_kcontrol *kcontrol,
1611                                      struct snd_ctl_elem_value *ucontrol)
1612{
1613        struct echoaudio *chip = snd_kcontrol_chip(kcontrol);
1614        int power, changed = 0;
1615
1616        power = !!ucontrol->value.integer.value[0];
1617        if (chip->phantom_power != power) {
1618                spin_lock_irq(&chip->lock);
1619                changed = set_phantom_power(chip, power);
1620                spin_unlock_irq(&chip->lock);
1621                if (changed == 0)
1622                        changed = 1;    /* no errors */
1623        }
1624        return changed;
1625}
1626
1627static const struct snd_kcontrol_new snd_echo_phantom_power_switch = {
1628        .name = "Phantom power Switch",
1629        .iface = SNDRV_CTL_ELEM_IFACE_CARD,
1630        .info = snd_echo_phantom_power_info,
1631        .get = snd_echo_phantom_power_get,
1632        .put = snd_echo_phantom_power_put,
1633};
1634
1635#endif /* ECHOCARD_HAS_PHANTOM_POWER */
1636
1637
1638
1639#ifdef ECHOCARD_HAS_DIGITAL_IN_AUTOMUTE
1640
1641/******************* Digital input automute switch *******************/
1642#define snd_echo_automute_info          snd_ctl_boolean_mono_info
1643
1644static int snd_echo_automute_get(struct snd_kcontrol *kcontrol,
1645                                 struct snd_ctl_elem_value *ucontrol)
1646{
1647        struct echoaudio *chip = snd_kcontrol_chip(kcontrol);
1648
1649        ucontrol->value.integer.value[0] = chip->digital_in_automute;
1650        return 0;
1651}
1652
1653static int snd_echo_automute_put(struct snd_kcontrol *kcontrol,
1654                                 struct snd_ctl_elem_value *ucontrol)
1655{
1656        struct echoaudio *chip = snd_kcontrol_chip(kcontrol);
1657        int automute, changed = 0;
1658
1659        automute = !!ucontrol->value.integer.value[0];
1660        if (chip->digital_in_automute != automute) {
1661                spin_lock_irq(&chip->lock);
1662                changed = set_input_auto_mute(chip, automute);
1663                spin_unlock_irq(&chip->lock);
1664                if (changed == 0)
1665                        changed = 1;    /* no errors */
1666        }
1667        return changed;
1668}
1669
1670static const struct snd_kcontrol_new snd_echo_automute_switch = {
1671        .name = "Digital Capture Switch (automute)",
1672        .iface = SNDRV_CTL_ELEM_IFACE_CARD,
1673        .info = snd_echo_automute_info,
1674        .get = snd_echo_automute_get,
1675        .put = snd_echo_automute_put,
1676};
1677
1678#endif /* ECHOCARD_HAS_DIGITAL_IN_AUTOMUTE */
1679
1680
1681
1682/******************* VU-meters switch *******************/
1683#define snd_echo_vumeters_switch_info           snd_ctl_boolean_mono_info
1684
1685static int snd_echo_vumeters_switch_put(struct snd_kcontrol *kcontrol,
1686                                        struct snd_ctl_elem_value *ucontrol)
1687{
1688        struct echoaudio *chip;
1689
1690        chip = snd_kcontrol_chip(kcontrol);
1691        spin_lock_irq(&chip->lock);
1692        set_meters_on(chip, ucontrol->value.integer.value[0]);
1693        spin_unlock_irq(&chip->lock);
1694        return 1;
1695}
1696
1697static const struct snd_kcontrol_new snd_echo_vumeters_switch = {
1698        .name = "VU-meters Switch",
1699        .iface = SNDRV_CTL_ELEM_IFACE_CARD,
1700        .access = SNDRV_CTL_ELEM_ACCESS_WRITE,
1701        .info = snd_echo_vumeters_switch_info,
1702        .put = snd_echo_vumeters_switch_put,
1703};
1704
1705
1706
1707/***** Read VU-meters (input, output, analog and digital together) *****/
1708static int snd_echo_vumeters_info(struct snd_kcontrol *kcontrol,
1709                                  struct snd_ctl_elem_info *uinfo)
1710{
1711        uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
1712        uinfo->count = 96;
1713        uinfo->value.integer.min = ECHOGAIN_MINOUT;
1714        uinfo->value.integer.max = 0;
1715        return 0;
1716}
1717
1718static int snd_echo_vumeters_get(struct snd_kcontrol *kcontrol,
1719                                 struct snd_ctl_elem_value *ucontrol)
1720{
1721        struct echoaudio *chip;
1722
1723        chip = snd_kcontrol_chip(kcontrol);
1724        get_audio_meters(chip, ucontrol->value.integer.value);
1725        return 0;
1726}
1727
1728static const struct snd_kcontrol_new snd_echo_vumeters = {
1729        .name = "VU-meters",
1730        .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1731        .access = SNDRV_CTL_ELEM_ACCESS_READ |
1732                  SNDRV_CTL_ELEM_ACCESS_VOLATILE |
1733                  SNDRV_CTL_ELEM_ACCESS_TLV_READ,
1734        .info = snd_echo_vumeters_info,
1735        .get = snd_echo_vumeters_get,
1736        .tlv = {.p = db_scale_output_gain},
1737};
1738
1739
1740
1741/*** Channels info - it exports informations about the number of channels ***/
1742static int snd_echo_channels_info_info(struct snd_kcontrol *kcontrol,
1743                                       struct snd_ctl_elem_info *uinfo)
1744{
1745        uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
1746        uinfo->count = 6;
1747        uinfo->value.integer.min = 0;
1748        uinfo->value.integer.max = 1 << ECHO_CLOCK_NUMBER;
1749        return 0;
1750}
1751
1752static int snd_echo_channels_info_get(struct snd_kcontrol *kcontrol,
1753                                      struct snd_ctl_elem_value *ucontrol)
1754{
1755        struct echoaudio *chip;
1756        int detected, clocks, bit, src;
1757
1758        chip = snd_kcontrol_chip(kcontrol);
1759        ucontrol->value.integer.value[0] = num_busses_in(chip);
1760        ucontrol->value.integer.value[1] = num_analog_busses_in(chip);
1761        ucontrol->value.integer.value[2] = num_busses_out(chip);
1762        ucontrol->value.integer.value[3] = num_analog_busses_out(chip);
1763        ucontrol->value.integer.value[4] = num_pipes_out(chip);
1764
1765        /* Compute the bitmask of the currently valid input clocks */
1766        detected = detect_input_clocks(chip);
1767        clocks = 0;
1768        src = chip->num_clock_sources - 1;
1769        for (bit = ECHO_CLOCK_NUMBER - 1; bit >= 0; bit--)
1770                if (detected & (1 << bit))
1771                        for (; src >= 0; src--)
1772                                if (bit == chip->clock_source_list[src]) {
1773                                        clocks |= 1 << src;
1774                                        break;
1775                                }
1776        ucontrol->value.integer.value[5] = clocks;
1777
1778        return 0;
1779}
1780
1781static const struct snd_kcontrol_new snd_echo_channels_info = {
1782        .name = "Channels info",
1783        .iface = SNDRV_CTL_ELEM_IFACE_HWDEP,
1784        .access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
1785        .info = snd_echo_channels_info_info,
1786        .get = snd_echo_channels_info_get,
1787};
1788
1789
1790
1791
1792/******************************************************************************
1793        IRQ Handling
1794******************************************************************************/
1795/* Check if a period has elapsed since last interrupt
1796 *
1797 * Don't make any updates to state; PCM core handles this with the
1798 * correct locks.
1799 *
1800 * \return true if a period has elapsed, otherwise false
1801 */
1802static bool period_has_elapsed(struct snd_pcm_substream *substream)
1803{
1804        struct snd_pcm_runtime *runtime = substream->runtime;
1805        struct audiopipe *pipe = runtime->private_data;
1806        u32 counter, step;
1807        size_t period_bytes;
1808
1809        if (pipe->state != PIPE_STATE_STARTED)
1810                return false;
1811
1812        period_bytes = frames_to_bytes(runtime, runtime->period_size);
1813
1814        counter = le32_to_cpu(*pipe->dma_counter);  /* presumed atomic */
1815
1816        step = counter - pipe->last_period;  /* handles wrapping */
1817        step -= step % period_bytes;  /* acknowledge whole periods only */
1818
1819        if (step == 0)
1820                return false;  /* haven't advanced a whole period yet */
1821
1822        pipe->last_period += step;  /* used exclusively by us */
1823        return true;
1824}
1825
1826static irqreturn_t snd_echo_interrupt(int irq, void *dev_id)
1827{
1828        struct echoaudio *chip = dev_id;
1829        int ss, st;
1830
1831        spin_lock(&chip->lock);
1832        st = service_irq(chip);
1833        if (st < 0) {
1834                spin_unlock(&chip->lock);
1835                return IRQ_NONE;
1836        }
1837        /* The hardware doesn't tell us which substream caused the irq,
1838        thus we have to check all running substreams. */
1839        for (ss = 0; ss < DSP_MAXPIPES; ss++) {
1840                struct snd_pcm_substream *substream;
1841
1842                substream = chip->substream[ss];
1843                if (substream && period_has_elapsed(substream)) {
1844                        spin_unlock(&chip->lock);
1845                        snd_pcm_period_elapsed(substream);
1846                        spin_lock(&chip->lock);
1847                }
1848        }
1849        spin_unlock(&chip->lock);
1850
1851#ifdef ECHOCARD_HAS_MIDI
1852        if (st > 0 && chip->midi_in) {
1853                snd_rawmidi_receive(chip->midi_in, chip->midi_buffer, st);
1854                dev_dbg(chip->card->dev, "rawmidi_iread=%d\n", st);
1855        }
1856#endif
1857        return IRQ_HANDLED;
1858}
1859
1860
1861
1862
1863/******************************************************************************
1864        Module construction / destruction
1865******************************************************************************/
1866
1867static int snd_echo_free(struct echoaudio *chip)
1868{
1869        if (chip->comm_page)
1870                rest_in_peace(chip);
1871
1872        if (chip->irq >= 0)
1873                free_irq(chip->irq, chip);
1874
1875        if (chip->comm_page)
1876                snd_dma_free_pages(&chip->commpage_dma_buf);
1877
1878        iounmap(chip->dsp_registers);
1879        release_and_free_resource(chip->iores);
1880        pci_disable_device(chip->pci);
1881
1882        /* release chip data */
1883        free_firmware_cache(chip);
1884        kfree(chip);
1885        return 0;
1886}
1887
1888
1889
1890static int snd_echo_dev_free(struct snd_device *device)
1891{
1892        struct echoaudio *chip = device->device_data;
1893
1894        return snd_echo_free(chip);
1895}
1896
1897
1898
1899/* <--snd_echo_probe() */
1900static int snd_echo_create(struct snd_card *card,
1901                           struct pci_dev *pci,
1902                           struct echoaudio **rchip)
1903{
1904        struct echoaudio *chip;
1905        int err;
1906        size_t sz;
1907        static const struct snd_device_ops ops = {
1908                .dev_free = snd_echo_dev_free,
1909        };
1910
1911        *rchip = NULL;
1912
1913        pci_write_config_byte(pci, PCI_LATENCY_TIMER, 0xC0);
1914
1915        if ((err = pci_enable_device(pci)) < 0)
1916                return err;
1917        pci_set_master(pci);
1918
1919        /* Allocate chip if needed */
1920        if (!*rchip) {
1921                chip = kzalloc(sizeof(*chip), GFP_KERNEL);
1922                if (!chip) {
1923                        pci_disable_device(pci);
1924                        return -ENOMEM;
1925                }
1926                dev_dbg(card->dev, "chip=%p\n", chip);
1927                spin_lock_init(&chip->lock);
1928                chip->card = card;
1929                chip->pci = pci;
1930                chip->irq = -1;
1931                chip->opencount = 0;
1932                mutex_init(&chip->mode_mutex);
1933                chip->can_set_rate = 1;
1934        } else {
1935                /* If this was called from the resume function, chip is
1936                 * already allocated and it contains current card settings.
1937                 */
1938                chip = *rchip;
1939        }
1940
1941        /* PCI resource allocation */
1942        chip->dsp_registers_phys = pci_resource_start(pci, 0);
1943        sz = pci_resource_len(pci, 0);
1944        if (sz > PAGE_SIZE)
1945                sz = PAGE_SIZE;         /* We map only the required part */
1946
1947        if ((chip->iores = request_mem_region(chip->dsp_registers_phys, sz,
1948                                              ECHOCARD_NAME)) == NULL) {
1949                dev_err(chip->card->dev, "cannot get memory region\n");
1950                snd_echo_free(chip);
1951                return -EBUSY;
1952        }
1953        chip->dsp_registers = ioremap(chip->dsp_registers_phys, sz);
1954        if (!chip->dsp_registers) {
1955                dev_err(chip->card->dev, "ioremap failed\n");
1956                snd_echo_free(chip);
1957                return -ENOMEM;
1958        }
1959
1960        if (request_irq(pci->irq, snd_echo_interrupt, IRQF_SHARED,
1961                        KBUILD_MODNAME, chip)) {
1962                dev_err(chip->card->dev, "cannot grab irq\n");
1963                snd_echo_free(chip);
1964                return -EBUSY;
1965        }
1966        chip->irq = pci->irq;
1967        card->sync_irq = chip->irq;
1968        dev_dbg(card->dev, "pci=%p irq=%d subdev=%04x Init hardware...\n",
1969                chip->pci, chip->irq, chip->pci->subsystem_device);
1970
1971        /* Create the DSP comm page - this is the area of memory used for most
1972        of the communication with the DSP, which accesses it via bus mastering */
1973        if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, &chip->pci->dev,
1974                                sizeof(struct comm_page),
1975                                &chip->commpage_dma_buf) < 0) {
1976                dev_err(chip->card->dev, "cannot allocate the comm page\n");
1977                snd_echo_free(chip);
1978                return -ENOMEM;
1979        }
1980        chip->comm_page_phys = chip->commpage_dma_buf.addr;
1981        chip->comm_page = (struct comm_page *)chip->commpage_dma_buf.area;
1982
1983        err = init_hw(chip, chip->pci->device, chip->pci->subsystem_device);
1984        if (err >= 0)
1985                err = set_mixer_defaults(chip);
1986        if (err < 0) {
1987                dev_err(card->dev, "init_hw err=%d\n", err);
1988                snd_echo_free(chip);
1989                return err;
1990        }
1991
1992        if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
1993                snd_echo_free(chip);
1994                return err;
1995        }
1996        *rchip = chip;
1997        /* Init done ! */
1998        return 0;
1999}
2000
2001
2002
2003/* constructor */
2004static int snd_echo_probe(struct pci_dev *pci,
2005                          const struct pci_device_id *pci_id)
2006{
2007        static int dev;
2008        struct snd_card *card;
2009        struct echoaudio *chip;
2010        char *dsp;
2011        __maybe_unused int i;
2012        int err;
2013
2014        if (dev >= SNDRV_CARDS)
2015                return -ENODEV;
2016        if (!enable[dev]) {
2017                dev++;
2018                return -ENOENT;
2019        }
2020
2021        i = 0;
2022        err = snd_card_new(&pci->dev, index[dev], id[dev], THIS_MODULE,
2023                           0, &card);
2024        if (err < 0)
2025                return err;
2026
2027        chip = NULL;    /* Tells snd_echo_create to allocate chip */
2028        if ((err = snd_echo_create(card, pci, &chip)) < 0) {
2029                snd_card_free(card);
2030                return err;
2031        }
2032
2033        strcpy(card->driver, "Echo_" ECHOCARD_NAME);
2034        strcpy(card->shortname, chip->card_name);
2035
2036        dsp = "56301";
2037        if (pci_id->device == 0x3410)
2038                dsp = "56361";
2039
2040        sprintf(card->longname, "%s rev.%d (DSP%s) at 0x%lx irq %i",
2041                card->shortname, pci_id->subdevice & 0x000f, dsp,
2042                chip->dsp_registers_phys, chip->irq);
2043
2044        if ((err = snd_echo_new_pcm(chip)) < 0) {
2045                dev_err(chip->card->dev, "new pcm error %d\n", err);
2046                snd_card_free(card);
2047                return err;
2048        }
2049
2050#ifdef ECHOCARD_HAS_MIDI
2051        if (chip->has_midi) {   /* Some Mia's do not have midi */
2052                if ((err = snd_echo_midi_create(card, chip)) < 0) {
2053                        dev_err(chip->card->dev, "new midi error %d\n", err);
2054                        snd_card_free(card);
2055                        return err;
2056                }
2057        }
2058#endif
2059
2060#ifdef ECHOCARD_HAS_VMIXER
2061        snd_echo_vmixer.count = num_pipes_out(chip) * num_busses_out(chip);
2062        if ((err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_echo_vmixer, chip))) < 0)
2063                goto ctl_error;
2064#ifdef ECHOCARD_HAS_LINE_OUT_GAIN
2065        err = snd_ctl_add(chip->card,
2066                          snd_ctl_new1(&snd_echo_line_output_gain, chip));
2067        if (err < 0)
2068                goto ctl_error;
2069#endif
2070#else /* ECHOCARD_HAS_VMIXER */
2071        err = snd_ctl_add(chip->card,
2072                          snd_ctl_new1(&snd_echo_pcm_output_gain, chip));
2073        if (err < 0)
2074                goto ctl_error;
2075#endif /* ECHOCARD_HAS_VMIXER */
2076
2077#ifdef ECHOCARD_HAS_INPUT_GAIN
2078        if ((err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_echo_line_input_gain, chip))) < 0)
2079                goto ctl_error;
2080#endif
2081
2082#ifdef ECHOCARD_HAS_INPUT_NOMINAL_LEVEL
2083        if (!chip->hasnt_input_nominal_level)
2084                if ((err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_echo_intput_nominal_level, chip))) < 0)
2085                        goto ctl_error;
2086#endif
2087
2088#ifdef ECHOCARD_HAS_OUTPUT_NOMINAL_LEVEL
2089        if ((err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_echo_output_nominal_level, chip))) < 0)
2090                goto ctl_error;
2091#endif
2092
2093        if ((err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_echo_vumeters_switch, chip))) < 0)
2094                goto ctl_error;
2095
2096        if ((err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_echo_vumeters, chip))) < 0)
2097                goto ctl_error;
2098
2099#ifdef ECHOCARD_HAS_MONITOR
2100        snd_echo_monitor_mixer.count = num_busses_in(chip) * num_busses_out(chip);
2101        if ((err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_echo_monitor_mixer, chip))) < 0)
2102                goto ctl_error;
2103#endif
2104
2105#ifdef ECHOCARD_HAS_DIGITAL_IN_AUTOMUTE
2106        if ((err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_echo_automute_switch, chip))) < 0)
2107                goto ctl_error;
2108#endif
2109
2110        if ((err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_echo_channels_info, chip))) < 0)
2111                goto ctl_error;
2112
2113#ifdef ECHOCARD_HAS_DIGITAL_MODE_SWITCH
2114        /* Creates a list of available digital modes */
2115        chip->num_digital_modes = 0;
2116        for (i = 0; i < 6; i++)
2117                if (chip->digital_modes & (1 << i))
2118                        chip->digital_mode_list[chip->num_digital_modes++] = i;
2119
2120        if ((err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_echo_digital_mode_switch, chip))) < 0)
2121                goto ctl_error;
2122#endif /* ECHOCARD_HAS_DIGITAL_MODE_SWITCH */
2123
2124#ifdef ECHOCARD_HAS_EXTERNAL_CLOCK
2125        /* Creates a list of available clock sources */
2126        chip->num_clock_sources = 0;
2127        for (i = 0; i < 10; i++)
2128                if (chip->input_clock_types & (1 << i))
2129                        chip->clock_source_list[chip->num_clock_sources++] = i;
2130
2131        if (chip->num_clock_sources > 1) {
2132                chip->clock_src_ctl = snd_ctl_new1(&snd_echo_clock_source_switch, chip);
2133                if ((err = snd_ctl_add(chip->card, chip->clock_src_ctl)) < 0)
2134                        goto ctl_error;
2135        }
2136#endif /* ECHOCARD_HAS_EXTERNAL_CLOCK */
2137
2138#ifdef ECHOCARD_HAS_DIGITAL_IO
2139        if ((err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_echo_spdif_mode_switch, chip))) < 0)
2140                goto ctl_error;
2141#endif
2142
2143#ifdef ECHOCARD_HAS_PHANTOM_POWER
2144        if (chip->has_phantom_power)
2145                if ((err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_echo_phantom_power_switch, chip))) < 0)
2146                        goto ctl_error;
2147#endif
2148
2149        err = snd_card_register(card);
2150        if (err < 0)
2151                goto ctl_error;
2152        dev_info(card->dev, "Card registered: %s\n", card->longname);
2153
2154        pci_set_drvdata(pci, chip);
2155        dev++;
2156        return 0;
2157
2158ctl_error:
2159        dev_err(card->dev, "new control error %d\n", err);
2160        snd_card_free(card);
2161        return err;
2162}
2163
2164
2165
2166#if defined(CONFIG_PM_SLEEP)
2167
2168static int snd_echo_suspend(struct device *dev)
2169{
2170        struct echoaudio *chip = dev_get_drvdata(dev);
2171
2172#ifdef ECHOCARD_HAS_MIDI
2173        /* This call can sleep */
2174        if (chip->midi_out)
2175                snd_echo_midi_output_trigger(chip->midi_out, 0);
2176#endif
2177        spin_lock_irq(&chip->lock);
2178        if (wait_handshake(chip)) {
2179                spin_unlock_irq(&chip->lock);
2180                return -EIO;
2181        }
2182        clear_handshake(chip);
2183        if (send_vector(chip, DSP_VC_GO_COMATOSE) < 0) {
2184                spin_unlock_irq(&chip->lock);
2185                return -EIO;
2186        }
2187        spin_unlock_irq(&chip->lock);
2188
2189        chip->dsp_code = NULL;
2190        free_irq(chip->irq, chip);
2191        chip->irq = -1;
2192        chip->card->sync_irq = -1;
2193        return 0;
2194}
2195
2196
2197
2198static int snd_echo_resume(struct device *dev)
2199{
2200        struct pci_dev *pci = to_pci_dev(dev);
2201        struct echoaudio *chip = dev_get_drvdata(dev);
2202        struct comm_page *commpage, *commpage_bak;
2203        u32 pipe_alloc_mask;
2204        int err;
2205
2206        commpage = chip->comm_page;
2207        commpage_bak = kmemdup(commpage, sizeof(*commpage), GFP_KERNEL);
2208        if (commpage_bak == NULL)
2209                return -ENOMEM;
2210
2211        err = init_hw(chip, chip->pci->device, chip->pci->subsystem_device);
2212        if (err < 0) {
2213                kfree(commpage_bak);
2214                dev_err(dev, "resume init_hw err=%d\n", err);
2215                return err;
2216        }
2217
2218        /* Temporarily set chip->pipe_alloc_mask=0 otherwise
2219         * restore_dsp_settings() fails.
2220         */
2221        pipe_alloc_mask = chip->pipe_alloc_mask;
2222        chip->pipe_alloc_mask = 0;
2223        err = restore_dsp_rettings(chip);
2224        chip->pipe_alloc_mask = pipe_alloc_mask;
2225        if (err < 0) {
2226                kfree(commpage_bak);
2227                return err;
2228        }
2229
2230        memcpy(&commpage->audio_format, &commpage_bak->audio_format,
2231                sizeof(commpage->audio_format));
2232        memcpy(&commpage->sglist_addr, &commpage_bak->sglist_addr,
2233                sizeof(commpage->sglist_addr));
2234        memcpy(&commpage->midi_output, &commpage_bak->midi_output,
2235                sizeof(commpage->midi_output));
2236        kfree(commpage_bak);
2237
2238        if (request_irq(pci->irq, snd_echo_interrupt, IRQF_SHARED,
2239                        KBUILD_MODNAME, chip)) {
2240                dev_err(chip->card->dev, "cannot grab irq\n");
2241                return -EBUSY;
2242        }
2243        chip->irq = pci->irq;
2244        chip->card->sync_irq = chip->irq;
2245        dev_dbg(dev, "resume irq=%d\n", chip->irq);
2246
2247#ifdef ECHOCARD_HAS_MIDI
2248        if (chip->midi_input_enabled)
2249                enable_midi_input(chip, true);
2250        if (chip->midi_out)
2251                snd_echo_midi_output_trigger(chip->midi_out, 1);
2252#endif
2253
2254        return 0;
2255}
2256
2257static SIMPLE_DEV_PM_OPS(snd_echo_pm, snd_echo_suspend, snd_echo_resume);
2258#define SND_ECHO_PM_OPS &snd_echo_pm
2259#else
2260#define SND_ECHO_PM_OPS NULL
2261#endif /* CONFIG_PM_SLEEP */
2262
2263
2264static void snd_echo_remove(struct pci_dev *pci)
2265{
2266        struct echoaudio *chip;
2267
2268        chip = pci_get_drvdata(pci);
2269        if (chip)
2270                snd_card_free(chip->card);
2271}
2272
2273
2274
2275/******************************************************************************
2276        Everything starts and ends here
2277******************************************************************************/
2278
2279/* pci_driver definition */
2280static struct pci_driver echo_driver = {
2281        .name = KBUILD_MODNAME,
2282        .id_table = snd_echo_ids,
2283        .probe = snd_echo_probe,
2284        .remove = snd_echo_remove,
2285        .driver = {
2286                .pm = SND_ECHO_PM_OPS,
2287        },
2288};
2289
2290module_pci_driver(echo_driver);
2291