linux/sound/pci/asihpi/asihpi.c
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   1/*
   2 *  Asihpi soundcard
   3 *  Copyright (c) by AudioScience Inc <alsa@audioscience.com>
   4 *
   5 *   This program is free software; you can redistribute it and/or modify
   6 *   it under the terms of version 2 of the GNU General Public License as
   7 *   published by the Free Software Foundation;
   8 *
   9 *   This program is distributed in the hope that it will be useful,
  10 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 *   GNU General Public License for more details.
  13 *
  14 *   You should have received a copy of the GNU General Public License
  15 *   along with this program; if not, write to the Free Software
  16 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  17 *
  18 *
  19 *  The following is not a condition of use, merely a request:
  20 *  If you modify this program, particularly if you fix errors, AudioScience Inc
  21 *  would appreciate it if you grant us the right to use those modifications
  22 *  for any purpose including commercial applications.
  23 */
  24
  25#include "hpi_internal.h"
  26#include "hpi_version.h"
  27#include "hpimsginit.h"
  28#include "hpioctl.h"
  29#include "hpicmn.h"
  30
  31
  32#include <linux/pci.h>
  33#include <linux/init.h>
  34#include <linux/jiffies.h>
  35#include <linux/slab.h>
  36#include <linux/time.h>
  37#include <linux/wait.h>
  38#include <linux/module.h>
  39#include <sound/core.h>
  40#include <sound/control.h>
  41#include <sound/pcm.h>
  42#include <sound/pcm_params.h>
  43#include <sound/info.h>
  44#include <sound/initval.h>
  45#include <sound/tlv.h>
  46#include <sound/hwdep.h>
  47
  48MODULE_LICENSE("GPL");
  49MODULE_AUTHOR("AudioScience inc. <support@audioscience.com>");
  50MODULE_DESCRIPTION("AudioScience ALSA ASI5000 ASI6000 ASI87xx ASI89xx "
  51                        HPI_VER_STRING);
  52
  53#if defined CONFIG_SND_DEBUG_VERBOSE
  54/**
  55 * snd_printddd - very verbose debug printk
  56 * @format: format string
  57 *
  58 * Works like snd_printk() for debugging purposes.
  59 * Ignored when CONFIG_SND_DEBUG_VERBOSE is not set.
  60 * Must set snd module debug parameter to 3 to enable at runtime.
  61 */
  62#define snd_printddd(format, args...) \
  63        __snd_printk(3, __FILE__, __LINE__, format, ##args)
  64#else
  65#define snd_printddd(format, args...) do { } while (0)
  66#endif
  67
  68static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;      /* index 0-MAX */
  69static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;       /* ID for this card */
  70static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
  71static bool enable_hpi_hwdep = 1;
  72
  73module_param_array(index, int, NULL, S_IRUGO);
  74MODULE_PARM_DESC(index, "ALSA index value for AudioScience soundcard.");
  75
  76module_param_array(id, charp, NULL, S_IRUGO);
  77MODULE_PARM_DESC(id, "ALSA ID string for AudioScience soundcard.");
  78
  79module_param_array(enable, bool, NULL, S_IRUGO);
  80MODULE_PARM_DESC(enable, "ALSA enable AudioScience soundcard.");
  81
  82module_param(enable_hpi_hwdep, bool, S_IRUGO|S_IWUSR);
  83MODULE_PARM_DESC(enable_hpi_hwdep,
  84                "ALSA enable HPI hwdep for AudioScience soundcard ");
  85
  86/* identify driver */
  87#ifdef KERNEL_ALSA_BUILD
  88static char *build_info = "Built using headers from kernel source";
  89module_param(build_info, charp, S_IRUGO);
  90MODULE_PARM_DESC(build_info, "built using headers from kernel source");
  91#else
  92static char *build_info = "Built within ALSA source";
  93module_param(build_info, charp, S_IRUGO);
  94MODULE_PARM_DESC(build_info, "built within ALSA source");
  95#endif
  96
  97/* set to 1 to dump every control from adapter to log */
  98static const int mixer_dump;
  99
 100#define DEFAULT_SAMPLERATE 44100
 101static int adapter_fs = DEFAULT_SAMPLERATE;
 102
 103/* defaults */
 104#define PERIODS_MIN 2
 105#define PERIOD_BYTES_MIN  2048
 106#define BUFFER_BYTES_MAX (512 * 1024)
 107
 108#define MAX_CLOCKSOURCES (HPI_SAMPLECLOCK_SOURCE_LAST + 1 + 7)
 109
 110struct clk_source {
 111        int source;
 112        int index;
 113        char *name;
 114};
 115
 116struct clk_cache {
 117        int count;
 118        int has_local;
 119        struct clk_source s[MAX_CLOCKSOURCES];
 120};
 121
 122/* Per card data */
 123struct snd_card_asihpi {
 124        struct snd_card *card;
 125        struct pci_dev *pci;
 126        struct hpi_adapter *hpi;
 127
 128        u32 h_mixer;
 129        struct clk_cache cc;
 130
 131        u16 can_dma;
 132        u16 support_grouping;
 133        u16 support_mrx;
 134        u16 update_interval_frames;
 135        u16 in_max_chans;
 136        u16 out_max_chans;
 137        u16 in_min_chans;
 138        u16 out_min_chans;
 139};
 140
 141/* Per stream data */
 142struct snd_card_asihpi_pcm {
 143        struct timer_list timer;
 144        unsigned int respawn_timer;
 145        unsigned int hpi_buffer_attached;
 146        unsigned int buffer_bytes;
 147        unsigned int period_bytes;
 148        unsigned int bytes_per_sec;
 149        unsigned int pcm_buf_host_rw_ofs; /* Host R/W pos */
 150        unsigned int pcm_buf_dma_ofs;   /* DMA R/W offset in buffer */
 151        unsigned int pcm_buf_elapsed_dma_ofs;   /* DMA R/W offset in buffer */
 152        unsigned int drained_count;
 153        struct snd_pcm_substream *substream;
 154        u32 h_stream;
 155        struct hpi_format format;
 156};
 157
 158/* universal stream verbs work with out or in stream handles */
 159
 160/* Functions to allow driver to give a buffer to HPI for busmastering */
 161
 162static u16 hpi_stream_host_buffer_attach(
 163        u32 h_stream,   /* handle to outstream. */
 164        u32 size_in_bytes, /* size in bytes of bus mastering buffer */
 165        u32 pci_address
 166)
 167{
 168        struct hpi_message hm;
 169        struct hpi_response hr;
 170        unsigned int obj = hpi_handle_object(h_stream);
 171
 172        if (!h_stream)
 173                return HPI_ERROR_INVALID_OBJ;
 174        hpi_init_message_response(&hm, &hr, obj,
 175                        obj == HPI_OBJ_OSTREAM ?
 176                                HPI_OSTREAM_HOSTBUFFER_ALLOC :
 177                                HPI_ISTREAM_HOSTBUFFER_ALLOC);
 178
 179        hpi_handle_to_indexes(h_stream, &hm.adapter_index,
 180                                &hm.obj_index);
 181
 182        hm.u.d.u.buffer.buffer_size = size_in_bytes;
 183        hm.u.d.u.buffer.pci_address = pci_address;
 184        hm.u.d.u.buffer.command = HPI_BUFFER_CMD_INTERNAL_GRANTADAPTER;
 185        hpi_send_recv(&hm, &hr);
 186        return hr.error;
 187}
 188
 189static u16 hpi_stream_host_buffer_detach(u32  h_stream)
 190{
 191        struct hpi_message hm;
 192        struct hpi_response hr;
 193        unsigned int obj = hpi_handle_object(h_stream);
 194
 195        if (!h_stream)
 196                return HPI_ERROR_INVALID_OBJ;
 197
 198        hpi_init_message_response(&hm, &hr,  obj,
 199                        obj == HPI_OBJ_OSTREAM ?
 200                                HPI_OSTREAM_HOSTBUFFER_FREE :
 201                                HPI_ISTREAM_HOSTBUFFER_FREE);
 202
 203        hpi_handle_to_indexes(h_stream, &hm.adapter_index,
 204                                &hm.obj_index);
 205        hm.u.d.u.buffer.command = HPI_BUFFER_CMD_INTERNAL_REVOKEADAPTER;
 206        hpi_send_recv(&hm, &hr);
 207        return hr.error;
 208}
 209
 210static inline u16 hpi_stream_start(u32 h_stream)
 211{
 212        if (hpi_handle_object(h_stream) ==  HPI_OBJ_OSTREAM)
 213                return hpi_outstream_start(h_stream);
 214        else
 215                return hpi_instream_start(h_stream);
 216}
 217
 218static inline u16 hpi_stream_stop(u32 h_stream)
 219{
 220        if (hpi_handle_object(h_stream) ==  HPI_OBJ_OSTREAM)
 221                return hpi_outstream_stop(h_stream);
 222        else
 223                return hpi_instream_stop(h_stream);
 224}
 225
 226static inline u16 hpi_stream_get_info_ex(
 227    u32 h_stream,
 228    u16        *pw_state,
 229    u32        *pbuffer_size,
 230    u32        *pdata_in_buffer,
 231    u32        *psample_count,
 232    u32        *pauxiliary_data
 233)
 234{
 235        u16 e;
 236        if (hpi_handle_object(h_stream)  ==  HPI_OBJ_OSTREAM)
 237                e = hpi_outstream_get_info_ex(h_stream, pw_state,
 238                                        pbuffer_size, pdata_in_buffer,
 239                                        psample_count, pauxiliary_data);
 240        else
 241                e = hpi_instream_get_info_ex(h_stream, pw_state,
 242                                        pbuffer_size, pdata_in_buffer,
 243                                        psample_count, pauxiliary_data);
 244        return e;
 245}
 246
 247static inline u16 hpi_stream_group_add(
 248                                        u32 h_master,
 249                                        u32 h_stream)
 250{
 251        if (hpi_handle_object(h_master) ==  HPI_OBJ_OSTREAM)
 252                return hpi_outstream_group_add(h_master, h_stream);
 253        else
 254                return hpi_instream_group_add(h_master, h_stream);
 255}
 256
 257static inline u16 hpi_stream_group_reset(u32 h_stream)
 258{
 259        if (hpi_handle_object(h_stream) ==  HPI_OBJ_OSTREAM)
 260                return hpi_outstream_group_reset(h_stream);
 261        else
 262                return hpi_instream_group_reset(h_stream);
 263}
 264
 265static inline u16 hpi_stream_group_get_map(
 266                                u32 h_stream, u32 *mo, u32 *mi)
 267{
 268        if (hpi_handle_object(h_stream) ==  HPI_OBJ_OSTREAM)
 269                return hpi_outstream_group_get_map(h_stream, mo, mi);
 270        else
 271                return hpi_instream_group_get_map(h_stream, mo, mi);
 272}
 273
 274static u16 handle_error(u16 err, int line, char *filename)
 275{
 276        if (err)
 277                printk(KERN_WARNING
 278                        "in file %s, line %d: HPI error %d\n",
 279                        filename, line, err);
 280        return err;
 281}
 282
 283#define hpi_handle_error(x)  handle_error(x, __LINE__, __FILE__)
 284
 285/***************************** GENERAL PCM ****************/
 286
 287static void print_hwparams(struct snd_pcm_substream *substream,
 288                                struct snd_pcm_hw_params *p)
 289{
 290        char name[16];
 291        snd_pcm_debug_name(substream, name, sizeof(name));
 292        snd_printd("%s HWPARAMS\n", name);
 293        snd_printd(" samplerate %d Hz\n", params_rate(p));
 294        snd_printd(" channels %d\n", params_channels(p));
 295        snd_printd(" format %d\n", params_format(p));
 296        snd_printd(" subformat %d\n", params_subformat(p));
 297        snd_printd(" buffer %d B\n", params_buffer_bytes(p));
 298        snd_printd(" period %d B\n", params_period_bytes(p));
 299        snd_printd(" access %d\n", params_access(p));
 300        snd_printd(" period_size %d\n", params_period_size(p));
 301        snd_printd(" periods %d\n", params_periods(p));
 302        snd_printd(" buffer_size %d\n", params_buffer_size(p));
 303        snd_printd(" %d B/s\n", params_rate(p) *
 304                params_channels(p) *
 305                snd_pcm_format_width(params_format(p)) / 8);
 306
 307}
 308
 309static snd_pcm_format_t hpi_to_alsa_formats[] = {
 310        -1,                     /* INVALID */
 311        SNDRV_PCM_FORMAT_U8,    /* HPI_FORMAT_PCM8_UNSIGNED        1 */
 312        SNDRV_PCM_FORMAT_S16,   /* HPI_FORMAT_PCM16_SIGNED         2 */
 313        -1,                     /* HPI_FORMAT_MPEG_L1              3 */
 314        SNDRV_PCM_FORMAT_MPEG,  /* HPI_FORMAT_MPEG_L2              4 */
 315        SNDRV_PCM_FORMAT_MPEG,  /* HPI_FORMAT_MPEG_L3              5 */
 316        -1,                     /* HPI_FORMAT_DOLBY_AC2            6 */
 317        -1,                     /* HPI_FORMAT_DOLBY_AC3            7 */
 318        SNDRV_PCM_FORMAT_S16_BE,/* HPI_FORMAT_PCM16_BIGENDIAN      8 */
 319        -1,                     /* HPI_FORMAT_AA_TAGIT1_HITS       9 */
 320        -1,                     /* HPI_FORMAT_AA_TAGIT1_INSERTS   10 */
 321        SNDRV_PCM_FORMAT_S32,   /* HPI_FORMAT_PCM32_SIGNED        11 */
 322        -1,                     /* HPI_FORMAT_RAW_BITSTREAM       12 */
 323        -1,                     /* HPI_FORMAT_AA_TAGIT1_HITS_EX1  13 */
 324        SNDRV_PCM_FORMAT_FLOAT, /* HPI_FORMAT_PCM32_FLOAT         14 */
 325#if 1
 326        /* ALSA can't handle 3 byte sample size together with power-of-2
 327         *  constraint on buffer_bytes, so disable this format
 328         */
 329        -1
 330#else
 331        /* SNDRV_PCM_FORMAT_S24_3LE */ /* HPI_FORMAT_PCM24_SIGNED 15 */
 332#endif
 333};
 334
 335
 336static int snd_card_asihpi_format_alsa2hpi(snd_pcm_format_t alsa_format,
 337                                           u16 *hpi_format)
 338{
 339        u16 format;
 340
 341        for (format = HPI_FORMAT_PCM8_UNSIGNED;
 342             format <= HPI_FORMAT_PCM24_SIGNED; format++) {
 343                if (hpi_to_alsa_formats[format] == alsa_format) {
 344                        *hpi_format = format;
 345                        return 0;
 346                }
 347        }
 348
 349        snd_printd(KERN_WARNING "failed match for alsa format %d\n",
 350                   alsa_format);
 351        *hpi_format = 0;
 352        return -EINVAL;
 353}
 354
 355static void snd_card_asihpi_pcm_samplerates(struct snd_card_asihpi *asihpi,
 356                                         struct snd_pcm_hardware *pcmhw)
 357{
 358        u16 err;
 359        u32 h_control;
 360        u32 sample_rate;
 361        int idx;
 362        unsigned int rate_min = 200000;
 363        unsigned int rate_max = 0;
 364        unsigned int rates = 0;
 365
 366        if (asihpi->support_mrx) {
 367                rates |= SNDRV_PCM_RATE_CONTINUOUS;
 368                rates |= SNDRV_PCM_RATE_8000_96000;
 369                rate_min = 8000;
 370                rate_max = 100000;
 371        } else {
 372                /* on cards without SRC,
 373                   valid rates are determined by sampleclock */
 374                err = hpi_mixer_get_control(asihpi->h_mixer,
 375                                          HPI_SOURCENODE_CLOCK_SOURCE, 0, 0, 0,
 376                                          HPI_CONTROL_SAMPLECLOCK, &h_control);
 377                if (err) {
 378                        snd_printk(KERN_ERR
 379                                "No local sampleclock, err %d\n", err);
 380                }
 381
 382                for (idx = -1; idx < 100; idx++) {
 383                        if (idx == -1) {
 384                                if (hpi_sample_clock_get_sample_rate(h_control,
 385                                                                &sample_rate))
 386                                        continue;
 387                        } else if (hpi_sample_clock_query_local_rate(h_control,
 388                                                        idx, &sample_rate)) {
 389                                break;
 390                        }
 391
 392                        rate_min = min(rate_min, sample_rate);
 393                        rate_max = max(rate_max, sample_rate);
 394
 395                        switch (sample_rate) {
 396                        case 5512:
 397                                rates |= SNDRV_PCM_RATE_5512;
 398                                break;
 399                        case 8000:
 400                                rates |= SNDRV_PCM_RATE_8000;
 401                                break;
 402                        case 11025:
 403                                rates |= SNDRV_PCM_RATE_11025;
 404                                break;
 405                        case 16000:
 406                                rates |= SNDRV_PCM_RATE_16000;
 407                                break;
 408                        case 22050:
 409                                rates |= SNDRV_PCM_RATE_22050;
 410                                break;
 411                        case 32000:
 412                                rates |= SNDRV_PCM_RATE_32000;
 413                                break;
 414                        case 44100:
 415                                rates |= SNDRV_PCM_RATE_44100;
 416                                break;
 417                        case 48000:
 418                                rates |= SNDRV_PCM_RATE_48000;
 419                                break;
 420                        case 64000:
 421                                rates |= SNDRV_PCM_RATE_64000;
 422                                break;
 423                        case 88200:
 424                                rates |= SNDRV_PCM_RATE_88200;
 425                                break;
 426                        case 96000:
 427                                rates |= SNDRV_PCM_RATE_96000;
 428                                break;
 429                        case 176400:
 430                                rates |= SNDRV_PCM_RATE_176400;
 431                                break;
 432                        case 192000:
 433                                rates |= SNDRV_PCM_RATE_192000;
 434                                break;
 435                        default: /* some other rate */
 436                                rates |= SNDRV_PCM_RATE_KNOT;
 437                        }
 438                }
 439        }
 440
 441        pcmhw->rates = rates;
 442        pcmhw->rate_min = rate_min;
 443        pcmhw->rate_max = rate_max;
 444}
 445
 446static int snd_card_asihpi_pcm_hw_params(struct snd_pcm_substream *substream,
 447                                         struct snd_pcm_hw_params *params)
 448{
 449        struct snd_pcm_runtime *runtime = substream->runtime;
 450        struct snd_card_asihpi_pcm *dpcm = runtime->private_data;
 451        struct snd_card_asihpi *card = snd_pcm_substream_chip(substream);
 452        int err;
 453        u16 format;
 454        int width;
 455        unsigned int bytes_per_sec;
 456
 457        print_hwparams(substream, params);
 458        err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(params));
 459        if (err < 0)
 460                return err;
 461        err = snd_card_asihpi_format_alsa2hpi(params_format(params), &format);
 462        if (err)
 463                return err;
 464
 465        hpi_handle_error(hpi_format_create(&dpcm->format,
 466                        params_channels(params),
 467                        format, params_rate(params), 0, 0));
 468
 469        if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) {
 470                if (hpi_instream_reset(dpcm->h_stream) != 0)
 471                        return -EINVAL;
 472
 473                if (hpi_instream_set_format(
 474                        dpcm->h_stream, &dpcm->format) != 0)
 475                        return -EINVAL;
 476        }
 477
 478        dpcm->hpi_buffer_attached = 0;
 479        if (card->can_dma) {
 480                err = hpi_stream_host_buffer_attach(dpcm->h_stream,
 481                        params_buffer_bytes(params),  runtime->dma_addr);
 482                if (err == 0) {
 483                        snd_printdd(
 484                                "stream_host_buffer_attach succeeded %u %lu\n",
 485                                params_buffer_bytes(params),
 486                                (unsigned long)runtime->dma_addr);
 487                } else {
 488                        snd_printd("stream_host_buffer_attach error %d\n",
 489                                        err);
 490                        return -ENOMEM;
 491                }
 492
 493                err = hpi_stream_get_info_ex(dpcm->h_stream, NULL,
 494                                                &dpcm->hpi_buffer_attached,
 495                                                NULL, NULL, NULL);
 496
 497                snd_printdd("stream_host_buffer_attach status 0x%x\n",
 498                                dpcm->hpi_buffer_attached);
 499
 500        }
 501        bytes_per_sec = params_rate(params) * params_channels(params);
 502        width = snd_pcm_format_width(params_format(params));
 503        bytes_per_sec *= width;
 504        bytes_per_sec /= 8;
 505        if (width < 0 || bytes_per_sec == 0)
 506                return -EINVAL;
 507
 508        dpcm->bytes_per_sec = bytes_per_sec;
 509        dpcm->buffer_bytes = params_buffer_bytes(params);
 510        dpcm->period_bytes = params_period_bytes(params);
 511
 512        return 0;
 513}
 514
 515static int
 516snd_card_asihpi_hw_free(struct snd_pcm_substream *substream)
 517{
 518        struct snd_pcm_runtime *runtime = substream->runtime;
 519        struct snd_card_asihpi_pcm *dpcm = runtime->private_data;
 520        if (dpcm->hpi_buffer_attached)
 521                hpi_stream_host_buffer_detach(dpcm->h_stream);
 522
 523        snd_pcm_lib_free_pages(substream);
 524        return 0;
 525}
 526
 527static void snd_card_asihpi_runtime_free(struct snd_pcm_runtime *runtime)
 528{
 529        struct snd_card_asihpi_pcm *dpcm = runtime->private_data;
 530        kfree(dpcm);
 531}
 532
 533static void snd_card_asihpi_pcm_timer_start(struct snd_pcm_substream *
 534                                            substream)
 535{
 536        struct snd_pcm_runtime *runtime = substream->runtime;
 537        struct snd_card_asihpi_pcm *dpcm = runtime->private_data;
 538        int expiry;
 539
 540        expiry = HZ / 200;
 541        /*? (dpcm->period_bytes * HZ / dpcm->bytes_per_sec); */
 542        expiry = max(expiry, 1); /* don't let it be zero! */
 543        dpcm->timer.expires = jiffies + expiry;
 544        dpcm->respawn_timer = 1;
 545        add_timer(&dpcm->timer);
 546}
 547
 548static void snd_card_asihpi_pcm_timer_stop(struct snd_pcm_substream *substream)
 549{
 550        struct snd_pcm_runtime *runtime = substream->runtime;
 551        struct snd_card_asihpi_pcm *dpcm = runtime->private_data;
 552
 553        dpcm->respawn_timer = 0;
 554        del_timer(&dpcm->timer);
 555}
 556
 557static int snd_card_asihpi_trigger(struct snd_pcm_substream *substream,
 558                                           int cmd)
 559{
 560        struct snd_card_asihpi_pcm *dpcm = substream->runtime->private_data;
 561        struct snd_card_asihpi *card = snd_pcm_substream_chip(substream);
 562        struct snd_pcm_substream *s;
 563        u16 e;
 564        char name[16];
 565
 566        snd_pcm_debug_name(substream, name, sizeof(name));
 567        snd_printdd("%s trigger\n", name);
 568
 569        switch (cmd) {
 570        case SNDRV_PCM_TRIGGER_START:
 571                snd_pcm_group_for_each_entry(s, substream) {
 572                        struct snd_pcm_runtime *runtime = s->runtime;
 573                        struct snd_card_asihpi_pcm *ds = runtime->private_data;
 574
 575                        if (snd_pcm_substream_chip(s) != card)
 576                                continue;
 577
 578                        /* don't link Cap and Play */
 579                        if (substream->stream != s->stream)
 580                                continue;
 581
 582                        ds->drained_count = 0;
 583                        if (s->stream == SNDRV_PCM_STREAM_PLAYBACK) {
 584                                /* How do I know how much valid data is present
 585                                * in buffer? Must be at least one period!
 586                                * Guessing 2 periods, but if
 587                                * buffer is bigger it may contain even more
 588                                * data??
 589                                */
 590                                unsigned int preload = ds->period_bytes * 1;
 591                                snd_printddd("%d preload x%x\n", s->number, preload);
 592                                hpi_handle_error(hpi_outstream_write_buf(
 593                                                ds->h_stream,
 594                                                &runtime->dma_area[0],
 595                                                preload,
 596                                                &ds->format));
 597                                ds->pcm_buf_host_rw_ofs = preload;
 598                        }
 599
 600                        if (card->support_grouping) {
 601                                snd_printdd("%d group\n", s->number);
 602                                e = hpi_stream_group_add(
 603                                        dpcm->h_stream,
 604                                        ds->h_stream);
 605                                if (!e) {
 606                                        snd_pcm_trigger_done(s, substream);
 607                                } else {
 608                                        hpi_handle_error(e);
 609                                        break;
 610                                }
 611                        } else
 612                                break;
 613                }
 614                snd_printdd("start\n");
 615                /* start the master stream */
 616                snd_card_asihpi_pcm_timer_start(substream);
 617                if ((substream->stream == SNDRV_PCM_STREAM_CAPTURE) ||
 618                        !card->can_dma)
 619                        hpi_handle_error(hpi_stream_start(dpcm->h_stream));
 620                break;
 621
 622        case SNDRV_PCM_TRIGGER_STOP:
 623                snd_card_asihpi_pcm_timer_stop(substream);
 624                snd_pcm_group_for_each_entry(s, substream) {
 625                        if (snd_pcm_substream_chip(s) != card)
 626                                continue;
 627                        /* don't link Cap and Play */
 628                        if (substream->stream != s->stream)
 629                                continue;
 630
 631                        /*? workaround linked streams don't
 632                        transition to SETUP 20070706*/
 633                        s->runtime->status->state = SNDRV_PCM_STATE_SETUP;
 634
 635                        if (card->support_grouping) {
 636                                snd_printdd("%d group\n", s->number);
 637                                snd_pcm_trigger_done(s, substream);
 638                        } else
 639                                break;
 640                }
 641                snd_printdd("stop\n");
 642
 643                /* _prepare and _hwparams reset the stream */
 644                hpi_handle_error(hpi_stream_stop(dpcm->h_stream));
 645                if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
 646                        hpi_handle_error(
 647                                hpi_outstream_reset(dpcm->h_stream));
 648
 649                if (card->support_grouping)
 650                        hpi_handle_error(hpi_stream_group_reset(dpcm->h_stream));
 651                break;
 652
 653        case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
 654                snd_printdd("pause release\n");
 655                hpi_handle_error(hpi_stream_start(dpcm->h_stream));
 656                snd_card_asihpi_pcm_timer_start(substream);
 657                break;
 658        case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
 659                snd_printdd("pause\n");
 660                snd_card_asihpi_pcm_timer_stop(substream);
 661                hpi_handle_error(hpi_stream_stop(dpcm->h_stream));
 662                break;
 663        default:
 664                snd_printd(KERN_ERR "\tINVALID\n");
 665                return -EINVAL;
 666        }
 667
 668        return 0;
 669}
 670
 671/*algorithm outline
 672 Without linking degenerates to getting single stream pos etc
 673 Without mmap 2nd loop degenerates to snd_pcm_period_elapsed
 674*/
 675/*
 676pcm_buf_dma_ofs=get_buf_pos(s);
 677for_each_linked_stream(s) {
 678        pcm_buf_dma_ofs=get_buf_pos(s);
 679        min_buf_pos = modulo_min(min_buf_pos, pcm_buf_dma_ofs, buffer_bytes)
 680        new_data = min(new_data, calc_new_data(pcm_buf_dma_ofs,irq_pos)
 681}
 682timer.expires = jiffies + predict_next_period_ready(min_buf_pos);
 683for_each_linked_stream(s) {
 684        s->pcm_buf_dma_ofs = min_buf_pos;
 685        if (new_data > period_bytes) {
 686                if (mmap) {
 687                        irq_pos = (irq_pos + period_bytes) % buffer_bytes;
 688                        if (playback) {
 689                                write(period_bytes);
 690                        } else {
 691                                read(period_bytes);
 692                        }
 693                }
 694                snd_pcm_period_elapsed(s);
 695        }
 696}
 697*/
 698
 699/** Minimum of 2 modulo values.  Works correctly when the difference between
 700* the values is less than half the modulus
 701*/
 702static inline unsigned int modulo_min(unsigned int a, unsigned int b,
 703                                        unsigned long int modulus)
 704{
 705        unsigned int result;
 706        if (((a-b) % modulus) < (modulus/2))
 707                result = b;
 708        else
 709                result = a;
 710
 711        return result;
 712}
 713
 714/** Timer function, equivalent to interrupt service routine for cards
 715*/
 716static void snd_card_asihpi_timer_function(unsigned long data)
 717{
 718        struct snd_card_asihpi_pcm *dpcm = (struct snd_card_asihpi_pcm *)data;
 719        struct snd_pcm_substream *substream = dpcm->substream;
 720        struct snd_card_asihpi *card = snd_pcm_substream_chip(substream);
 721        struct snd_pcm_runtime *runtime;
 722        struct snd_pcm_substream *s;
 723        unsigned int newdata = 0;
 724        unsigned int pcm_buf_dma_ofs, min_buf_pos = 0;
 725        unsigned int remdata, xfercount, next_jiffies;
 726        int first = 1;
 727        int loops = 0;
 728        u16 state;
 729        u32 buffer_size, bytes_avail, samples_played, on_card_bytes;
 730        char name[16];
 731
 732        snd_pcm_debug_name(substream, name, sizeof(name));
 733
 734        snd_printdd("%s snd_card_asihpi_timer_function\n", name);
 735
 736        /* find minimum newdata and buffer pos in group */
 737        snd_pcm_group_for_each_entry(s, substream) {
 738                struct snd_card_asihpi_pcm *ds = s->runtime->private_data;
 739                runtime = s->runtime;
 740
 741                if (snd_pcm_substream_chip(s) != card)
 742                        continue;
 743
 744                /* don't link Cap and Play */
 745                if (substream->stream != s->stream)
 746                        continue;
 747
 748                hpi_handle_error(hpi_stream_get_info_ex(
 749                                        ds->h_stream, &state,
 750                                        &buffer_size, &bytes_avail,
 751                                        &samples_played, &on_card_bytes));
 752
 753                /* number of bytes in on-card buffer */
 754                runtime->delay = on_card_bytes;
 755
 756                if (!card->can_dma)
 757                        on_card_bytes = bytes_avail;
 758
 759                if (s->stream == SNDRV_PCM_STREAM_PLAYBACK) {
 760                        pcm_buf_dma_ofs = ds->pcm_buf_host_rw_ofs - bytes_avail;
 761                        if (state == HPI_STATE_STOPPED) {
 762                                if (bytes_avail == 0) {
 763                                        hpi_handle_error(hpi_stream_start(ds->h_stream));
 764                                        snd_printdd("P%d start\n", s->number);
 765                                        ds->drained_count = 0;
 766                                }
 767                        } else if (state == HPI_STATE_DRAINED) {
 768                                snd_printd(KERN_WARNING "P%d drained\n",
 769                                                s->number);
 770                                ds->drained_count++;
 771                                if (ds->drained_count > 20) {
 772                                        snd_pcm_stop(s, SNDRV_PCM_STATE_XRUN);
 773                                        continue;
 774                                }
 775                        } else {
 776                                ds->drained_count = 0;
 777                        }
 778                } else
 779                        pcm_buf_dma_ofs = bytes_avail + ds->pcm_buf_host_rw_ofs;
 780
 781                if (first) {
 782                        /* can't statically init min when wrap is involved */
 783                        min_buf_pos = pcm_buf_dma_ofs;
 784                        newdata = (pcm_buf_dma_ofs - ds->pcm_buf_elapsed_dma_ofs) % ds->buffer_bytes;
 785                        first = 0;
 786                } else {
 787                        min_buf_pos =
 788                                modulo_min(min_buf_pos, pcm_buf_dma_ofs, UINT_MAX+1L);
 789                        newdata = min(
 790                                (pcm_buf_dma_ofs - ds->pcm_buf_elapsed_dma_ofs) % ds->buffer_bytes,
 791                                newdata);
 792                }
 793
 794                snd_printdd("hw_ptr 0x%04lX, appl_ptr 0x%04lX\n",
 795                        (unsigned long)frames_to_bytes(runtime,
 796                                                runtime->status->hw_ptr),
 797                        (unsigned long)frames_to_bytes(runtime,
 798                                                runtime->control->appl_ptr));
 799
 800                snd_printdd("%d S=%d, "
 801                        "rw=0x%04X, dma=0x%04X, left=0x%04X, "
 802                        "aux=0x%04X space=0x%04X\n",
 803                        s->number, state,
 804                        ds->pcm_buf_host_rw_ofs, pcm_buf_dma_ofs,
 805                        (int)bytes_avail,
 806                        (int)on_card_bytes, buffer_size-bytes_avail);
 807                loops++;
 808        }
 809        pcm_buf_dma_ofs = min_buf_pos;
 810
 811        remdata = newdata % dpcm->period_bytes;
 812        xfercount = newdata - remdata; /* a multiple of period_bytes */
 813        /* come back when on_card_bytes has decreased enough to allow
 814           write to happen, or when data has been consumed to make another
 815           period
 816        */
 817        if (xfercount && (on_card_bytes  > dpcm->period_bytes))
 818                next_jiffies = ((on_card_bytes - dpcm->period_bytes) * HZ / dpcm->bytes_per_sec);
 819        else
 820                next_jiffies = ((dpcm->period_bytes - remdata) * HZ / dpcm->bytes_per_sec);
 821
 822        next_jiffies = max(next_jiffies, 1U);
 823        dpcm->timer.expires = jiffies + next_jiffies;
 824        snd_printdd("jif %d buf pos 0x%04X newdata 0x%04X xfer 0x%04X\n",
 825                        next_jiffies, pcm_buf_dma_ofs, newdata, xfercount);
 826
 827        snd_pcm_group_for_each_entry(s, substream) {
 828                struct snd_card_asihpi_pcm *ds = s->runtime->private_data;
 829
 830                /* don't link Cap and Play */
 831                if (substream->stream != s->stream)
 832                        continue;
 833
 834                ds->pcm_buf_dma_ofs = pcm_buf_dma_ofs;
 835
 836                if (xfercount &&
 837                        /* Limit use of on card fifo for playback */
 838                        ((on_card_bytes <= ds->period_bytes) ||
 839                        (s->stream == SNDRV_PCM_STREAM_CAPTURE)))
 840
 841                {
 842
 843                        unsigned int buf_ofs = ds->pcm_buf_host_rw_ofs % ds->buffer_bytes;
 844                        unsigned int xfer1, xfer2;
 845                        char *pd = &s->runtime->dma_area[buf_ofs];
 846
 847                        if (card->can_dma) { /* buffer wrap is handled at lower level */
 848                                xfer1 = xfercount;
 849                                xfer2 = 0;
 850                        } else {
 851                                xfer1 = min(xfercount, ds->buffer_bytes - buf_ofs);
 852                                xfer2 = xfercount - xfer1;
 853                        }
 854
 855                        if (s->stream == SNDRV_PCM_STREAM_PLAYBACK) {
 856                                snd_printddd("P%d write1 0x%04X 0x%04X\n",
 857                                        s->number, xfer1, buf_ofs);
 858                                hpi_handle_error(
 859                                        hpi_outstream_write_buf(
 860                                                ds->h_stream, pd, xfer1,
 861                                                &ds->format));
 862
 863                                if (xfer2) {
 864                                        pd = s->runtime->dma_area;
 865
 866                                        snd_printddd("P%d write2 0x%04X 0x%04X\n",
 867                                                        s->number,
 868                                                        xfercount - xfer1, buf_ofs);
 869                                        hpi_handle_error(
 870                                                hpi_outstream_write_buf(
 871                                                        ds->h_stream, pd,
 872                                                        xfercount - xfer1,
 873                                                        &ds->format));
 874                                }
 875                        } else {
 876                                snd_printddd("C%d read1 0x%04x\n",
 877                                        s->number, xfer1);
 878                                hpi_handle_error(
 879                                        hpi_instream_read_buf(
 880                                                ds->h_stream,
 881                                                pd, xfer1));
 882                                if (xfer2) {
 883                                        pd = s->runtime->dma_area;
 884                                        snd_printddd("C%d read2 0x%04x\n",
 885                                                s->number, xfer2);
 886                                        hpi_handle_error(
 887                                                hpi_instream_read_buf(
 888                                                        ds->h_stream,
 889                                                        pd, xfer2));
 890                                }
 891                        }
 892                        ds->pcm_buf_host_rw_ofs += xfercount;
 893                        ds->pcm_buf_elapsed_dma_ofs += xfercount;
 894                        snd_pcm_period_elapsed(s);
 895                }
 896        }
 897
 898        if (dpcm->respawn_timer)
 899                add_timer(&dpcm->timer);
 900}
 901
 902/***************************** PLAYBACK OPS ****************/
 903static int snd_card_asihpi_playback_ioctl(struct snd_pcm_substream *substream,
 904                                          unsigned int cmd, void *arg)
 905{
 906        char name[16];
 907        snd_pcm_debug_name(substream, name, sizeof(name));
 908        snd_printddd(KERN_INFO "%s ioctl %d\n", name, cmd);
 909        return snd_pcm_lib_ioctl(substream, cmd, arg);
 910}
 911
 912static int snd_card_asihpi_playback_prepare(struct snd_pcm_substream *
 913                                            substream)
 914{
 915        struct snd_pcm_runtime *runtime = substream->runtime;
 916        struct snd_card_asihpi_pcm *dpcm = runtime->private_data;
 917
 918        snd_printdd("P%d prepare\n", substream->number);
 919
 920        hpi_handle_error(hpi_outstream_reset(dpcm->h_stream));
 921        dpcm->pcm_buf_host_rw_ofs = 0;
 922        dpcm->pcm_buf_dma_ofs = 0;
 923        dpcm->pcm_buf_elapsed_dma_ofs = 0;
 924        return 0;
 925}
 926
 927static snd_pcm_uframes_t
 928snd_card_asihpi_playback_pointer(struct snd_pcm_substream *substream)
 929{
 930        struct snd_pcm_runtime *runtime = substream->runtime;
 931        struct snd_card_asihpi_pcm *dpcm = runtime->private_data;
 932        snd_pcm_uframes_t ptr;
 933        char name[16];
 934        snd_pcm_debug_name(substream, name, sizeof(name));
 935
 936        ptr = bytes_to_frames(runtime, dpcm->pcm_buf_dma_ofs  % dpcm->buffer_bytes);
 937        snd_printddd("%s pointer = 0x%04lx\n", name, (unsigned long)ptr);
 938        return ptr;
 939}
 940
 941static u64 snd_card_asihpi_playback_formats(struct snd_card_asihpi *asihpi,
 942                                                u32 h_stream)
 943{
 944        struct hpi_format hpi_format;
 945        u16 format;
 946        u16 err;
 947        u32 h_control;
 948        u32 sample_rate = 48000;
 949        u64 formats = 0;
 950
 951        /* on cards without SRC, must query at valid rate,
 952        * maybe set by external sync
 953        */
 954        err = hpi_mixer_get_control(asihpi->h_mixer,
 955                                  HPI_SOURCENODE_CLOCK_SOURCE, 0, 0, 0,
 956                                  HPI_CONTROL_SAMPLECLOCK, &h_control);
 957
 958        if (!err)
 959                err = hpi_sample_clock_get_sample_rate(h_control,
 960                                &sample_rate);
 961
 962        for (format = HPI_FORMAT_PCM8_UNSIGNED;
 963             format <= HPI_FORMAT_PCM24_SIGNED; format++) {
 964                err = hpi_format_create(&hpi_format, asihpi->out_max_chans,
 965                                        format, sample_rate, 128000, 0);
 966                if (!err)
 967                        err = hpi_outstream_query_format(h_stream, &hpi_format);
 968                if (!err && (hpi_to_alsa_formats[format] != -1))
 969                        formats |= (1ULL << hpi_to_alsa_formats[format]);
 970        }
 971        return formats;
 972}
 973
 974static int snd_card_asihpi_playback_open(struct snd_pcm_substream *substream)
 975{
 976        struct snd_pcm_runtime *runtime = substream->runtime;
 977        struct snd_card_asihpi_pcm *dpcm;
 978        struct snd_card_asihpi *card = snd_pcm_substream_chip(substream);
 979        struct snd_pcm_hardware snd_card_asihpi_playback;
 980        int err;
 981
 982        dpcm = kzalloc(sizeof(*dpcm), GFP_KERNEL);
 983        if (dpcm == NULL)
 984                return -ENOMEM;
 985
 986        err = hpi_outstream_open(card->hpi->adapter->index,
 987                              substream->number, &dpcm->h_stream);
 988        hpi_handle_error(err);
 989        if (err)
 990                kfree(dpcm);
 991        if (err == HPI_ERROR_OBJ_ALREADY_OPEN)
 992                return -EBUSY;
 993        if (err)
 994                return -EIO;
 995
 996        /*? also check ASI5000 samplerate source
 997            If external, only support external rate.
 998            If internal and other stream playing, can't switch
 999        */
1000
1001        init_timer(&dpcm->timer);
1002        dpcm->timer.data = (unsigned long) dpcm;
1003        dpcm->timer.function = snd_card_asihpi_timer_function;
1004        dpcm->substream = substream;
1005        runtime->private_data = dpcm;
1006        runtime->private_free = snd_card_asihpi_runtime_free;
1007
1008        memset(&snd_card_asihpi_playback, 0, sizeof(snd_card_asihpi_playback));
1009        snd_card_asihpi_playback.buffer_bytes_max = BUFFER_BYTES_MAX;
1010        snd_card_asihpi_playback.period_bytes_min = PERIOD_BYTES_MIN;
1011        /*?snd_card_asihpi_playback.period_bytes_min =
1012        card->out_max_chans * 4096; */
1013        snd_card_asihpi_playback.period_bytes_max = BUFFER_BYTES_MAX / PERIODS_MIN;
1014        snd_card_asihpi_playback.periods_min = PERIODS_MIN;
1015        snd_card_asihpi_playback.periods_max = BUFFER_BYTES_MAX / PERIOD_BYTES_MIN;
1016        /* snd_card_asihpi_playback.fifo_size = 0; */
1017        snd_card_asihpi_playback.channels_max = card->out_max_chans;
1018        snd_card_asihpi_playback.channels_min = card->out_min_chans;
1019        snd_card_asihpi_playback.formats =
1020                        snd_card_asihpi_playback_formats(card, dpcm->h_stream);
1021
1022        snd_card_asihpi_pcm_samplerates(card,  &snd_card_asihpi_playback);
1023
1024        snd_card_asihpi_playback.info = SNDRV_PCM_INFO_INTERLEAVED |
1025                                        SNDRV_PCM_INFO_DOUBLE |
1026                                        SNDRV_PCM_INFO_BATCH |
1027                                        SNDRV_PCM_INFO_BLOCK_TRANSFER |
1028                                        SNDRV_PCM_INFO_PAUSE |
1029                                        SNDRV_PCM_INFO_MMAP |
1030                                        SNDRV_PCM_INFO_MMAP_VALID;
1031
1032        if (card->support_grouping) {
1033                snd_card_asihpi_playback.info |= SNDRV_PCM_INFO_SYNC_START;
1034                snd_pcm_set_sync(substream);
1035        }
1036
1037        /* struct is copied, so can create initializer dynamically */
1038        runtime->hw = snd_card_asihpi_playback;
1039
1040        if (card->can_dma)
1041                err = snd_pcm_hw_constraint_pow2(runtime, 0,
1042                                        SNDRV_PCM_HW_PARAM_BUFFER_BYTES);
1043        if (err < 0)
1044                return err;
1045
1046        snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_SIZE,
1047                card->update_interval_frames);
1048
1049        snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_PERIOD_SIZE,
1050                card->update_interval_frames * 2, UINT_MAX);
1051
1052        snd_printdd("playback open\n");
1053
1054        return 0;
1055}
1056
1057static int snd_card_asihpi_playback_close(struct snd_pcm_substream *substream)
1058{
1059        struct snd_pcm_runtime *runtime = substream->runtime;
1060        struct snd_card_asihpi_pcm *dpcm = runtime->private_data;
1061
1062        hpi_handle_error(hpi_outstream_close(dpcm->h_stream));
1063        snd_printdd("playback close\n");
1064
1065        return 0;
1066}
1067
1068static struct snd_pcm_ops snd_card_asihpi_playback_mmap_ops = {
1069        .open = snd_card_asihpi_playback_open,
1070        .close = snd_card_asihpi_playback_close,
1071        .ioctl = snd_card_asihpi_playback_ioctl,
1072        .hw_params = snd_card_asihpi_pcm_hw_params,
1073        .hw_free = snd_card_asihpi_hw_free,
1074        .prepare = snd_card_asihpi_playback_prepare,
1075        .trigger = snd_card_asihpi_trigger,
1076        .pointer = snd_card_asihpi_playback_pointer,
1077};
1078
1079/***************************** CAPTURE OPS ****************/
1080static snd_pcm_uframes_t
1081snd_card_asihpi_capture_pointer(struct snd_pcm_substream *substream)
1082{
1083        struct snd_pcm_runtime *runtime = substream->runtime;
1084        struct snd_card_asihpi_pcm *dpcm = runtime->private_data;
1085
1086        snd_printddd("capture pointer %d=%d\n",
1087                        substream->number, dpcm->pcm_buf_dma_ofs);
1088        /* NOTE Unlike playback can't use actual samples_played
1089                for the capture position, because those samples aren't yet in
1090                the local buffer available for reading.
1091        */
1092        return bytes_to_frames(runtime, dpcm->pcm_buf_dma_ofs % dpcm->buffer_bytes);
1093}
1094
1095static int snd_card_asihpi_capture_ioctl(struct snd_pcm_substream *substream,
1096                                         unsigned int cmd, void *arg)
1097{
1098        return snd_pcm_lib_ioctl(substream, cmd, arg);
1099}
1100
1101static int snd_card_asihpi_capture_prepare(struct snd_pcm_substream *substream)
1102{
1103        struct snd_pcm_runtime *runtime = substream->runtime;
1104        struct snd_card_asihpi_pcm *dpcm = runtime->private_data;
1105
1106        hpi_handle_error(hpi_instream_reset(dpcm->h_stream));
1107        dpcm->pcm_buf_host_rw_ofs = 0;
1108        dpcm->pcm_buf_dma_ofs = 0;
1109        dpcm->pcm_buf_elapsed_dma_ofs = 0;
1110
1111        snd_printdd("Capture Prepare %d\n", substream->number);
1112        return 0;
1113}
1114
1115
1116
1117static u64 snd_card_asihpi_capture_formats(struct snd_card_asihpi *asihpi,
1118                                        u32 h_stream)
1119{
1120  struct hpi_format hpi_format;
1121        u16 format;
1122        u16 err;
1123        u32 h_control;
1124        u32 sample_rate = 48000;
1125        u64 formats = 0;
1126
1127        /* on cards without SRC, must query at valid rate,
1128                maybe set by external sync */
1129        err = hpi_mixer_get_control(asihpi->h_mixer,
1130                                  HPI_SOURCENODE_CLOCK_SOURCE, 0, 0, 0,
1131                                  HPI_CONTROL_SAMPLECLOCK, &h_control);
1132
1133        if (!err)
1134                err = hpi_sample_clock_get_sample_rate(h_control,
1135                        &sample_rate);
1136
1137        for (format = HPI_FORMAT_PCM8_UNSIGNED;
1138                format <= HPI_FORMAT_PCM24_SIGNED; format++) {
1139
1140                err = hpi_format_create(&hpi_format, asihpi->in_max_chans,
1141                                        format, sample_rate, 128000, 0);
1142                if (!err)
1143                        err = hpi_instream_query_format(h_stream, &hpi_format);
1144                if (!err)
1145                        formats |= (1ULL << hpi_to_alsa_formats[format]);
1146        }
1147        return formats;
1148}
1149
1150static int snd_card_asihpi_capture_open(struct snd_pcm_substream *substream)
1151{
1152        struct snd_pcm_runtime *runtime = substream->runtime;
1153        struct snd_card_asihpi *card = snd_pcm_substream_chip(substream);
1154        struct snd_card_asihpi_pcm *dpcm;
1155        struct snd_pcm_hardware snd_card_asihpi_capture;
1156        int err;
1157
1158        dpcm = kzalloc(sizeof(*dpcm), GFP_KERNEL);
1159        if (dpcm == NULL)
1160                return -ENOMEM;
1161
1162        snd_printdd("capture open adapter %d stream %d\n",
1163                        card->hpi->adapter->index, substream->number);
1164
1165        err = hpi_handle_error(
1166            hpi_instream_open(card->hpi->adapter->index,
1167                             substream->number, &dpcm->h_stream));
1168        if (err)
1169                kfree(dpcm);
1170        if (err == HPI_ERROR_OBJ_ALREADY_OPEN)
1171                return -EBUSY;
1172        if (err)
1173                return -EIO;
1174
1175        init_timer(&dpcm->timer);
1176        dpcm->timer.data = (unsigned long) dpcm;
1177        dpcm->timer.function = snd_card_asihpi_timer_function;
1178        dpcm->substream = substream;
1179        runtime->private_data = dpcm;
1180        runtime->private_free = snd_card_asihpi_runtime_free;
1181
1182        memset(&snd_card_asihpi_capture, 0, sizeof(snd_card_asihpi_capture));
1183        snd_card_asihpi_capture.buffer_bytes_max = BUFFER_BYTES_MAX;
1184        snd_card_asihpi_capture.period_bytes_min = PERIOD_BYTES_MIN;
1185        snd_card_asihpi_capture.period_bytes_max = BUFFER_BYTES_MAX / PERIODS_MIN;
1186        snd_card_asihpi_capture.periods_min = PERIODS_MIN;
1187        snd_card_asihpi_capture.periods_max = BUFFER_BYTES_MAX / PERIOD_BYTES_MIN;
1188        /* snd_card_asihpi_capture.fifo_size = 0; */
1189        snd_card_asihpi_capture.channels_max = card->in_max_chans;
1190        snd_card_asihpi_capture.channels_min = card->in_min_chans;
1191        snd_card_asihpi_capture.formats =
1192                snd_card_asihpi_capture_formats(card, dpcm->h_stream);
1193        snd_card_asihpi_pcm_samplerates(card,  &snd_card_asihpi_capture);
1194        snd_card_asihpi_capture.info = SNDRV_PCM_INFO_INTERLEAVED |
1195                                        SNDRV_PCM_INFO_MMAP |
1196                                        SNDRV_PCM_INFO_MMAP_VALID;
1197
1198        if (card->support_grouping)
1199                snd_card_asihpi_capture.info |= SNDRV_PCM_INFO_SYNC_START;
1200
1201        runtime->hw = snd_card_asihpi_capture;
1202
1203        if (card->can_dma)
1204                err = snd_pcm_hw_constraint_pow2(runtime, 0,
1205                                        SNDRV_PCM_HW_PARAM_BUFFER_BYTES);
1206        if (err < 0)
1207                return err;
1208
1209        snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_SIZE,
1210                card->update_interval_frames);
1211        snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_PERIOD_SIZE,
1212                card->update_interval_frames * 2, UINT_MAX);
1213
1214        snd_pcm_set_sync(substream);
1215
1216        return 0;
1217}
1218
1219static int snd_card_asihpi_capture_close(struct snd_pcm_substream *substream)
1220{
1221        struct snd_card_asihpi_pcm *dpcm = substream->runtime->private_data;
1222
1223        hpi_handle_error(hpi_instream_close(dpcm->h_stream));
1224        return 0;
1225}
1226
1227static struct snd_pcm_ops snd_card_asihpi_capture_mmap_ops = {
1228        .open = snd_card_asihpi_capture_open,
1229        .close = snd_card_asihpi_capture_close,
1230        .ioctl = snd_card_asihpi_capture_ioctl,
1231        .hw_params = snd_card_asihpi_pcm_hw_params,
1232        .hw_free = snd_card_asihpi_hw_free,
1233        .prepare = snd_card_asihpi_capture_prepare,
1234        .trigger = snd_card_asihpi_trigger,
1235        .pointer = snd_card_asihpi_capture_pointer,
1236};
1237
1238static int __devinit snd_card_asihpi_pcm_new(
1239                struct snd_card_asihpi *asihpi, int device)
1240{
1241        struct snd_pcm *pcm;
1242        int err;
1243        u16 num_instreams, num_outstreams, x16;
1244        u32 x32;
1245
1246        err = hpi_adapter_get_info(asihpi->hpi->adapter->index,
1247                        &num_outstreams, &num_instreams,
1248                        &x16, &x32, &x16);
1249
1250        err = snd_pcm_new(asihpi->card, "Asihpi PCM", device,
1251                        num_outstreams, num_instreams, &pcm);
1252        if (err < 0)
1253                return err;
1254        /* pointer to ops struct is stored, dont change ops afterwards! */
1255                snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK,
1256                                &snd_card_asihpi_playback_mmap_ops);
1257                snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE,
1258                                &snd_card_asihpi_capture_mmap_ops);
1259
1260        pcm->private_data = asihpi;
1261        pcm->info_flags = 0;
1262        strcpy(pcm->name, "Asihpi PCM");
1263
1264        /*? do we want to emulate MMAP for non-BBM cards?
1265        Jack doesn't work with ALSAs MMAP emulation - WHY NOT? */
1266        snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
1267                                                snd_dma_pci_data(asihpi->pci),
1268                                                64*1024, BUFFER_BYTES_MAX);
1269
1270        return 0;
1271}
1272
1273/***************************** MIXER CONTROLS ****************/
1274struct hpi_control {
1275        u32 h_control;
1276        u16 control_type;
1277        u16 src_node_type;
1278        u16 src_node_index;
1279        u16 dst_node_type;
1280        u16 dst_node_index;
1281        u16 band;
1282        char name[44]; /* copied to snd_ctl_elem_id.name[44]; */
1283};
1284
1285static const char * const asihpi_tuner_band_names[] = {
1286        "invalid",
1287        "AM",
1288        "FM mono",
1289        "TV NTSC-M",
1290        "FM stereo",
1291        "AUX",
1292        "TV PAL BG",
1293        "TV PAL I",
1294        "TV PAL DK",
1295        "TV SECAM",
1296};
1297
1298compile_time_assert(
1299        (ARRAY_SIZE(asihpi_tuner_band_names) ==
1300                (HPI_TUNER_BAND_LAST+1)),
1301        assert_tuner_band_names_size);
1302
1303static const char * const asihpi_src_names[] = {
1304        "no source",
1305        "PCM",
1306        "Line",
1307        "Digital",
1308        "Tuner",
1309        "RF",
1310        "Clock",
1311        "Bitstream",
1312        "Mic",
1313        "Net",
1314        "Analog",
1315        "Adapter",
1316        "RTP",
1317        "Internal"
1318};
1319
1320compile_time_assert(
1321        (ARRAY_SIZE(asihpi_src_names) ==
1322                (HPI_SOURCENODE_LAST_INDEX-HPI_SOURCENODE_NONE+1)),
1323        assert_src_names_size);
1324
1325static const char * const asihpi_dst_names[] = {
1326        "no destination",
1327        "PCM",
1328        "Line",
1329        "Digital",
1330        "RF",
1331        "Speaker",
1332        "Net",
1333        "Analog",
1334        "RTP",
1335};
1336
1337compile_time_assert(
1338        (ARRAY_SIZE(asihpi_dst_names) ==
1339                (HPI_DESTNODE_LAST_INDEX-HPI_DESTNODE_NONE+1)),
1340        assert_dst_names_size);
1341
1342static inline int ctl_add(struct snd_card *card, struct snd_kcontrol_new *ctl,
1343                                struct snd_card_asihpi *asihpi)
1344{
1345        int err;
1346
1347        err = snd_ctl_add(card, snd_ctl_new1(ctl, asihpi));
1348        if (err < 0)
1349                return err;
1350        else if (mixer_dump)
1351                snd_printk(KERN_INFO "added %s(%d)\n", ctl->name, ctl->index);
1352
1353        return 0;
1354}
1355
1356/* Convert HPI control name and location into ALSA control name */
1357static void asihpi_ctl_init(struct snd_kcontrol_new *snd_control,
1358                                struct hpi_control *hpi_ctl,
1359                                char *name)
1360{
1361        char *dir;
1362        memset(snd_control, 0, sizeof(*snd_control));
1363        snd_control->name = hpi_ctl->name;
1364        snd_control->private_value = hpi_ctl->h_control;
1365        snd_control->iface = SNDRV_CTL_ELEM_IFACE_MIXER;
1366        snd_control->index = 0;
1367
1368        if (hpi_ctl->src_node_type + HPI_SOURCENODE_NONE == HPI_SOURCENODE_CLOCK_SOURCE)
1369                dir = ""; /* clock is neither capture nor playback */
1370        else if (hpi_ctl->dst_node_type + HPI_DESTNODE_NONE == HPI_DESTNODE_ISTREAM)
1371                dir = "Capture ";  /* On or towards a PCM capture destination*/
1372        else if ((hpi_ctl->src_node_type + HPI_SOURCENODE_NONE != HPI_SOURCENODE_OSTREAM) &&
1373                (!hpi_ctl->dst_node_type))
1374                dir = "Capture "; /* On a source node that is not PCM playback */
1375        else if (hpi_ctl->src_node_type &&
1376                (hpi_ctl->src_node_type + HPI_SOURCENODE_NONE != HPI_SOURCENODE_OSTREAM) &&
1377                (hpi_ctl->dst_node_type))
1378                dir = "Monitor Playback "; /* Between an input and an output */
1379        else
1380                dir = "Playback "; /* PCM Playback source, or  output node */
1381
1382        if (hpi_ctl->src_node_type && hpi_ctl->dst_node_type)
1383                sprintf(hpi_ctl->name, "%s %d %s %d %s%s",
1384                        asihpi_src_names[hpi_ctl->src_node_type],
1385                        hpi_ctl->src_node_index,
1386                        asihpi_dst_names[hpi_ctl->dst_node_type],
1387                        hpi_ctl->dst_node_index,
1388                        dir, name);
1389        else if (hpi_ctl->dst_node_type) {
1390                sprintf(hpi_ctl->name, "%s %d %s%s",
1391                asihpi_dst_names[hpi_ctl->dst_node_type],
1392                hpi_ctl->dst_node_index,
1393                dir, name);
1394        } else {
1395                sprintf(hpi_ctl->name, "%s %d %s%s",
1396                asihpi_src_names[hpi_ctl->src_node_type],
1397                hpi_ctl->src_node_index,
1398                dir, name);
1399        }
1400        /* printk(KERN_INFO "Adding %s %d to %d ",  hpi_ctl->name,
1401                hpi_ctl->wSrcNodeType, hpi_ctl->wDstNodeType); */
1402}
1403
1404/*------------------------------------------------------------
1405   Volume controls
1406 ------------------------------------------------------------*/
1407#define VOL_STEP_mB 1
1408static int snd_asihpi_volume_info(struct snd_kcontrol *kcontrol,
1409                                  struct snd_ctl_elem_info *uinfo)
1410{
1411        u32 h_control = kcontrol->private_value;
1412        u32 count;
1413        u16 err;
1414        /* native gains are in millibels */
1415        short min_gain_mB;
1416        short max_gain_mB;
1417        short step_gain_mB;
1418
1419        err = hpi_volume_query_range(h_control,
1420                        &min_gain_mB, &max_gain_mB, &step_gain_mB);
1421        if (err) {
1422                max_gain_mB = 0;
1423                min_gain_mB = -10000;
1424                step_gain_mB = VOL_STEP_mB;
1425        }
1426
1427        err = hpi_meter_query_channels(h_control, &count);
1428        if (err)
1429                count = HPI_MAX_CHANNELS;
1430
1431        uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
1432        uinfo->count = count;
1433        uinfo->value.integer.min = min_gain_mB / VOL_STEP_mB;
1434        uinfo->value.integer.max = max_gain_mB / VOL_STEP_mB;
1435        uinfo->value.integer.step = step_gain_mB / VOL_STEP_mB;
1436        return 0;
1437}
1438
1439static int snd_asihpi_volume_get(struct snd_kcontrol *kcontrol,
1440                                 struct snd_ctl_elem_value *ucontrol)
1441{
1442        u32 h_control = kcontrol->private_value;
1443        short an_gain_mB[HPI_MAX_CHANNELS];
1444
1445        hpi_handle_error(hpi_volume_get_gain(h_control, an_gain_mB));
1446        ucontrol->value.integer.value[0] = an_gain_mB[0] / VOL_STEP_mB;
1447        ucontrol->value.integer.value[1] = an_gain_mB[1] / VOL_STEP_mB;
1448
1449        return 0;
1450}
1451
1452static int snd_asihpi_volume_put(struct snd_kcontrol *kcontrol,
1453                                 struct snd_ctl_elem_value *ucontrol)
1454{
1455        int change;
1456        u32 h_control = kcontrol->private_value;
1457        short an_gain_mB[HPI_MAX_CHANNELS];
1458
1459        an_gain_mB[0] =
1460            (ucontrol->value.integer.value[0]) * VOL_STEP_mB;
1461        an_gain_mB[1] =
1462            (ucontrol->value.integer.value[1]) * VOL_STEP_mB;
1463        /*  change = asihpi->mixer_volume[addr][0] != left ||
1464           asihpi->mixer_volume[addr][1] != right;
1465         */
1466        change = 1;
1467        hpi_handle_error(hpi_volume_set_gain(h_control, an_gain_mB));
1468        return change;
1469}
1470
1471static const DECLARE_TLV_DB_SCALE(db_scale_100, -10000, VOL_STEP_mB, 0);
1472
1473#define snd_asihpi_volume_mute_info     snd_ctl_boolean_mono_info
1474
1475static int snd_asihpi_volume_mute_get(struct snd_kcontrol *kcontrol,
1476                                 struct snd_ctl_elem_value *ucontrol)
1477{
1478        u32 h_control = kcontrol->private_value;
1479        u32 mute;
1480
1481        hpi_handle_error(hpi_volume_get_mute(h_control, &mute));
1482        ucontrol->value.integer.value[0] = mute ? 0 : 1;
1483
1484        return 0;
1485}
1486
1487static int snd_asihpi_volume_mute_put(struct snd_kcontrol *kcontrol,
1488                                 struct snd_ctl_elem_value *ucontrol)
1489{
1490        u32 h_control = kcontrol->private_value;
1491        int change = 1;
1492        /* HPI currently only supports all or none muting of multichannel volume
1493        ALSA Switch element has opposite sense to HPI mute: on==unmuted, off=muted
1494        */
1495        int mute =  ucontrol->value.integer.value[0] ? 0 : HPI_BITMASK_ALL_CHANNELS;
1496        hpi_handle_error(hpi_volume_set_mute(h_control, mute));
1497        return change;
1498}
1499
1500static int __devinit snd_asihpi_volume_add(struct snd_card_asihpi *asihpi,
1501                                        struct hpi_control *hpi_ctl)
1502{
1503        struct snd_card *card = asihpi->card;
1504        struct snd_kcontrol_new snd_control;
1505        int err;
1506        u32 mute;
1507
1508        asihpi_ctl_init(&snd_control, hpi_ctl, "Volume");
1509        snd_control.access = SNDRV_CTL_ELEM_ACCESS_READWRITE |
1510                                SNDRV_CTL_ELEM_ACCESS_TLV_READ;
1511        snd_control.info = snd_asihpi_volume_info;
1512        snd_control.get = snd_asihpi_volume_get;
1513        snd_control.put = snd_asihpi_volume_put;
1514        snd_control.tlv.p = db_scale_100;
1515
1516        err = ctl_add(card, &snd_control, asihpi);
1517        if (err)
1518                return err;
1519
1520        if (hpi_volume_get_mute(hpi_ctl->h_control, &mute) == 0) {
1521                asihpi_ctl_init(&snd_control, hpi_ctl, "Switch");
1522                snd_control.access = SNDRV_CTL_ELEM_ACCESS_READWRITE;
1523                snd_control.info = snd_asihpi_volume_mute_info;
1524                snd_control.get = snd_asihpi_volume_mute_get;
1525                snd_control.put = snd_asihpi_volume_mute_put;
1526                err = ctl_add(card, &snd_control, asihpi);
1527        }
1528        return err;
1529}
1530
1531/*------------------------------------------------------------
1532   Level controls
1533 ------------------------------------------------------------*/
1534static int snd_asihpi_level_info(struct snd_kcontrol *kcontrol,
1535                                 struct snd_ctl_elem_info *uinfo)
1536{
1537        u32 h_control = kcontrol->private_value;
1538        u16 err;
1539        short min_gain_mB;
1540        short max_gain_mB;
1541        short step_gain_mB;
1542
1543        err =
1544            hpi_level_query_range(h_control, &min_gain_mB,
1545                               &max_gain_mB, &step_gain_mB);
1546        if (err) {
1547                max_gain_mB = 2400;
1548                min_gain_mB = -1000;
1549                step_gain_mB = 100;
1550        }
1551
1552        uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
1553        uinfo->count = 2;
1554        uinfo->value.integer.min = min_gain_mB / HPI_UNITS_PER_dB;
1555        uinfo->value.integer.max = max_gain_mB / HPI_UNITS_PER_dB;
1556        uinfo->value.integer.step = step_gain_mB / HPI_UNITS_PER_dB;
1557        return 0;
1558}
1559
1560static int snd_asihpi_level_get(struct snd_kcontrol *kcontrol,
1561                                struct snd_ctl_elem_value *ucontrol)
1562{
1563        u32 h_control = kcontrol->private_value;
1564        short an_gain_mB[HPI_MAX_CHANNELS];
1565
1566        hpi_handle_error(hpi_level_get_gain(h_control, an_gain_mB));
1567        ucontrol->value.integer.value[0] =
1568            an_gain_mB[0] / HPI_UNITS_PER_dB;
1569        ucontrol->value.integer.value[1] =
1570            an_gain_mB[1] / HPI_UNITS_PER_dB;
1571
1572        return 0;
1573}
1574
1575static int snd_asihpi_level_put(struct snd_kcontrol *kcontrol,
1576                                struct snd_ctl_elem_value *ucontrol)
1577{
1578        int change;
1579        u32 h_control = kcontrol->private_value;
1580        short an_gain_mB[HPI_MAX_CHANNELS];
1581
1582        an_gain_mB[0] =
1583            (ucontrol->value.integer.value[0]) * HPI_UNITS_PER_dB;
1584        an_gain_mB[1] =
1585            (ucontrol->value.integer.value[1]) * HPI_UNITS_PER_dB;
1586        /*  change = asihpi->mixer_level[addr][0] != left ||
1587           asihpi->mixer_level[addr][1] != right;
1588         */
1589        change = 1;
1590        hpi_handle_error(hpi_level_set_gain(h_control, an_gain_mB));
1591        return change;
1592}
1593
1594static const DECLARE_TLV_DB_SCALE(db_scale_level, -1000, 100, 0);
1595
1596static int __devinit snd_asihpi_level_add(struct snd_card_asihpi *asihpi,
1597                                        struct hpi_control *hpi_ctl)
1598{
1599        struct snd_card *card = asihpi->card;
1600        struct snd_kcontrol_new snd_control;
1601
1602        /* can't use 'volume' cos some nodes have volume as well */
1603        asihpi_ctl_init(&snd_control, hpi_ctl, "Level");
1604        snd_control.access = SNDRV_CTL_ELEM_ACCESS_READWRITE |
1605                                SNDRV_CTL_ELEM_ACCESS_TLV_READ;
1606        snd_control.info = snd_asihpi_level_info;
1607        snd_control.get = snd_asihpi_level_get;
1608        snd_control.put = snd_asihpi_level_put;
1609        snd_control.tlv.p = db_scale_level;
1610
1611        return ctl_add(card, &snd_control, asihpi);
1612}
1613
1614/*------------------------------------------------------------
1615   AESEBU controls
1616 ------------------------------------------------------------*/
1617
1618/* AESEBU format */
1619static const char * const asihpi_aesebu_format_names[] = {
1620        "N/A", "S/PDIF", "AES/EBU" };
1621
1622static int snd_asihpi_aesebu_format_info(struct snd_kcontrol *kcontrol,
1623                                  struct snd_ctl_elem_info *uinfo)
1624{
1625        uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
1626        uinfo->count = 1;
1627        uinfo->value.enumerated.items = 3;
1628
1629        if (uinfo->value.enumerated.item >= uinfo->value.enumerated.items)
1630                uinfo->value.enumerated.item =
1631                        uinfo->value.enumerated.items - 1;
1632
1633        strcpy(uinfo->value.enumerated.name,
1634                asihpi_aesebu_format_names[uinfo->value.enumerated.item]);
1635
1636        return 0;
1637}
1638
1639static int snd_asihpi_aesebu_format_get(struct snd_kcontrol *kcontrol,
1640                        struct snd_ctl_elem_value *ucontrol,
1641                        u16 (*func)(u32, u16 *))
1642{
1643        u32 h_control = kcontrol->private_value;
1644        u16 source, err;
1645
1646        err = func(h_control, &source);
1647
1648        /* default to N/A */
1649        ucontrol->value.enumerated.item[0] = 0;
1650        /* return success but set the control to N/A */
1651        if (err)
1652                return 0;
1653        if (source == HPI_AESEBU_FORMAT_SPDIF)
1654                ucontrol->value.enumerated.item[0] = 1;
1655        if (source == HPI_AESEBU_FORMAT_AESEBU)
1656                ucontrol->value.enumerated.item[0] = 2;
1657
1658        return 0;
1659}
1660
1661static int snd_asihpi_aesebu_format_put(struct snd_kcontrol *kcontrol,
1662                        struct snd_ctl_elem_value *ucontrol,
1663                         u16 (*func)(u32, u16))
1664{
1665        u32 h_control = kcontrol->private_value;
1666
1667        /* default to S/PDIF */
1668        u16 source = HPI_AESEBU_FORMAT_SPDIF;
1669
1670        if (ucontrol->value.enumerated.item[0] == 1)
1671                source = HPI_AESEBU_FORMAT_SPDIF;
1672        if (ucontrol->value.enumerated.item[0] == 2)
1673                source = HPI_AESEBU_FORMAT_AESEBU;
1674
1675        if (func(h_control, source) != 0)
1676                return -EINVAL;
1677
1678        return 1;
1679}
1680
1681static int snd_asihpi_aesebu_rx_format_get(struct snd_kcontrol *kcontrol,
1682                                 struct snd_ctl_elem_value *ucontrol) {
1683        return snd_asihpi_aesebu_format_get(kcontrol, ucontrol,
1684                                        hpi_aesebu_receiver_get_format);
1685}
1686
1687static int snd_asihpi_aesebu_rx_format_put(struct snd_kcontrol *kcontrol,
1688                                 struct snd_ctl_elem_value *ucontrol) {
1689        return snd_asihpi_aesebu_format_put(kcontrol, ucontrol,
1690                                        hpi_aesebu_receiver_set_format);
1691}
1692
1693static int snd_asihpi_aesebu_rxstatus_info(struct snd_kcontrol *kcontrol,
1694                                  struct snd_ctl_elem_info *uinfo)
1695{
1696        uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
1697        uinfo->count = 1;
1698
1699        uinfo->value.integer.min = 0;
1700        uinfo->value.integer.max = 0X1F;
1701        uinfo->value.integer.step = 1;
1702
1703        return 0;
1704}
1705
1706static int snd_asihpi_aesebu_rxstatus_get(struct snd_kcontrol *kcontrol,
1707                                 struct snd_ctl_elem_value *ucontrol) {
1708
1709        u32 h_control = kcontrol->private_value;
1710        u16 status;
1711
1712        hpi_handle_error(hpi_aesebu_receiver_get_error_status(
1713                                         h_control, &status));
1714        ucontrol->value.integer.value[0] = status;
1715        return 0;
1716}
1717
1718static int __devinit snd_asihpi_aesebu_rx_add(struct snd_card_asihpi *asihpi,
1719                                        struct hpi_control *hpi_ctl)
1720{
1721        struct snd_card *card = asihpi->card;
1722        struct snd_kcontrol_new snd_control;
1723
1724        asihpi_ctl_init(&snd_control, hpi_ctl, "Format");
1725        snd_control.access = SNDRV_CTL_ELEM_ACCESS_READWRITE;
1726        snd_control.info = snd_asihpi_aesebu_format_info;
1727        snd_control.get = snd_asihpi_aesebu_rx_format_get;
1728        snd_control.put = snd_asihpi_aesebu_rx_format_put;
1729
1730
1731        if (ctl_add(card, &snd_control, asihpi) < 0)
1732                return -EINVAL;
1733
1734        asihpi_ctl_init(&snd_control, hpi_ctl, "Status");
1735        snd_control.access =
1736            SNDRV_CTL_ELEM_ACCESS_VOLATILE | SNDRV_CTL_ELEM_ACCESS_READ;
1737        snd_control.info = snd_asihpi_aesebu_rxstatus_info;
1738        snd_control.get = snd_asihpi_aesebu_rxstatus_get;
1739
1740        return ctl_add(card, &snd_control, asihpi);
1741}
1742
1743static int snd_asihpi_aesebu_tx_format_get(struct snd_kcontrol *kcontrol,
1744                                 struct snd_ctl_elem_value *ucontrol) {
1745        return snd_asihpi_aesebu_format_get(kcontrol, ucontrol,
1746                                        hpi_aesebu_transmitter_get_format);
1747}
1748
1749static int snd_asihpi_aesebu_tx_format_put(struct snd_kcontrol *kcontrol,
1750                                 struct snd_ctl_elem_value *ucontrol) {
1751        return snd_asihpi_aesebu_format_put(kcontrol, ucontrol,
1752                                        hpi_aesebu_transmitter_set_format);
1753}
1754
1755
1756static int __devinit snd_asihpi_aesebu_tx_add(struct snd_card_asihpi *asihpi,
1757                                        struct hpi_control *hpi_ctl)
1758{
1759        struct snd_card *card = asihpi->card;
1760        struct snd_kcontrol_new snd_control;
1761
1762        asihpi_ctl_init(&snd_control, hpi_ctl, "Format");
1763        snd_control.access = SNDRV_CTL_ELEM_ACCESS_READWRITE;
1764        snd_control.info = snd_asihpi_aesebu_format_info;
1765        snd_control.get = snd_asihpi_aesebu_tx_format_get;
1766        snd_control.put = snd_asihpi_aesebu_tx_format_put;
1767
1768        return ctl_add(card, &snd_control, asihpi);
1769}
1770
1771/*------------------------------------------------------------
1772   Tuner controls
1773 ------------------------------------------------------------*/
1774
1775/* Gain */
1776
1777static int snd_asihpi_tuner_gain_info(struct snd_kcontrol *kcontrol,
1778                                  struct snd_ctl_elem_info *uinfo)
1779{
1780        u32 h_control = kcontrol->private_value;
1781        u16 err;
1782        short idx;
1783        u16 gain_range[3];
1784
1785        for (idx = 0; idx < 3; idx++) {
1786                err = hpi_tuner_query_gain(h_control,
1787                                          idx, &gain_range[idx]);
1788                if (err != 0)
1789                        return err;
1790        }
1791
1792        uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
1793        uinfo->count = 1;
1794        uinfo->value.integer.min = ((int)gain_range[0]) / HPI_UNITS_PER_dB;
1795        uinfo->value.integer.max = ((int)gain_range[1]) / HPI_UNITS_PER_dB;
1796        uinfo->value.integer.step = ((int) gain_range[2]) / HPI_UNITS_PER_dB;
1797        return 0;
1798}
1799
1800static int snd_asihpi_tuner_gain_get(struct snd_kcontrol *kcontrol,
1801                                 struct snd_ctl_elem_value *ucontrol)
1802{
1803        /*
1804        struct snd_card_asihpi *asihpi = snd_kcontrol_chip(kcontrol);
1805        */
1806        u32 h_control = kcontrol->private_value;
1807        short gain;
1808
1809        hpi_handle_error(hpi_tuner_get_gain(h_control, &gain));
1810        ucontrol->value.integer.value[0] = gain / HPI_UNITS_PER_dB;
1811
1812        return 0;
1813}
1814
1815static int snd_asihpi_tuner_gain_put(struct snd_kcontrol *kcontrol,
1816                                 struct snd_ctl_elem_value *ucontrol)
1817{
1818        /*
1819        struct snd_card_asihpi *asihpi = snd_kcontrol_chip(kcontrol);
1820        */
1821        u32 h_control = kcontrol->private_value;
1822        short gain;
1823
1824        gain = (ucontrol->value.integer.value[0]) * HPI_UNITS_PER_dB;
1825        hpi_handle_error(hpi_tuner_set_gain(h_control, gain));
1826
1827        return 1;
1828}
1829
1830/* Band  */
1831
1832static int asihpi_tuner_band_query(struct snd_kcontrol *kcontrol,
1833                                        u16 *band_list, u32 len) {
1834        u32 h_control = kcontrol->private_value;
1835        u16 err = 0;
1836        u32 i;
1837
1838        for (i = 0; i < len; i++) {
1839                err = hpi_tuner_query_band(
1840                                h_control, i, &band_list[i]);
1841                if (err != 0)
1842                        break;
1843        }
1844
1845        if (err && (err != HPI_ERROR_INVALID_OBJ_INDEX))
1846                return -EIO;
1847
1848        return i;
1849}
1850
1851static int snd_asihpi_tuner_band_info(struct snd_kcontrol *kcontrol,
1852                                  struct snd_ctl_elem_info *uinfo)
1853{
1854        u16 tuner_bands[HPI_TUNER_BAND_LAST];
1855        int num_bands = 0;
1856
1857        num_bands = asihpi_tuner_band_query(kcontrol, tuner_bands,
1858                                HPI_TUNER_BAND_LAST);
1859
1860        if (num_bands < 0)
1861                return num_bands;
1862
1863        uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
1864        uinfo->count = 1;
1865        uinfo->value.enumerated.items = num_bands;
1866
1867        if (num_bands > 0) {
1868                if (uinfo->value.enumerated.item >=
1869                                        uinfo->value.enumerated.items)
1870                        uinfo->value.enumerated.item =
1871                                uinfo->value.enumerated.items - 1;
1872
1873                strcpy(uinfo->value.enumerated.name,
1874                        asihpi_tuner_band_names[
1875                                tuner_bands[uinfo->value.enumerated.item]]);
1876
1877        }
1878        return 0;
1879}
1880
1881static int snd_asihpi_tuner_band_get(struct snd_kcontrol *kcontrol,
1882                                 struct snd_ctl_elem_value *ucontrol)
1883{
1884        u32 h_control = kcontrol->private_value;
1885        /*
1886        struct snd_card_asihpi *asihpi = snd_kcontrol_chip(kcontrol);
1887        */
1888        u16 band, idx;
1889        u16 tuner_bands[HPI_TUNER_BAND_LAST];
1890        u32 num_bands = 0;
1891
1892        num_bands = asihpi_tuner_band_query(kcontrol, tuner_bands,
1893                                HPI_TUNER_BAND_LAST);
1894
1895        hpi_handle_error(hpi_tuner_get_band(h_control, &band));
1896
1897        ucontrol->value.enumerated.item[0] = -1;
1898        for (idx = 0; idx < HPI_TUNER_BAND_LAST; idx++)
1899                if (tuner_bands[idx] == band) {
1900                        ucontrol->value.enumerated.item[0] = idx;
1901                        break;
1902                }
1903
1904        return 0;
1905}
1906
1907static int snd_asihpi_tuner_band_put(struct snd_kcontrol *kcontrol,
1908                                 struct snd_ctl_elem_value *ucontrol)
1909{
1910        /*
1911        struct snd_card_asihpi *asihpi = snd_kcontrol_chip(kcontrol);
1912        */
1913        u32 h_control = kcontrol->private_value;
1914        u16 band;
1915        u16 tuner_bands[HPI_TUNER_BAND_LAST];
1916        u32 num_bands = 0;
1917
1918        num_bands = asihpi_tuner_band_query(kcontrol, tuner_bands,
1919                        HPI_TUNER_BAND_LAST);
1920
1921        band = tuner_bands[ucontrol->value.enumerated.item[0]];
1922        hpi_handle_error(hpi_tuner_set_band(h_control, band));
1923
1924        return 1;
1925}
1926
1927/* Freq */
1928
1929static int snd_asihpi_tuner_freq_info(struct snd_kcontrol *kcontrol,
1930                                  struct snd_ctl_elem_info *uinfo)
1931{
1932        u32 h_control = kcontrol->private_value;
1933        u16 err;
1934        u16 tuner_bands[HPI_TUNER_BAND_LAST];
1935        u16 num_bands = 0, band_iter, idx;
1936        u32 freq_range[3], temp_freq_range[3];
1937
1938        num_bands = asihpi_tuner_band_query(kcontrol, tuner_bands,
1939                        HPI_TUNER_BAND_LAST);
1940
1941        freq_range[0] = INT_MAX;
1942        freq_range[1] = 0;
1943        freq_range[2] = INT_MAX;
1944
1945        for (band_iter = 0; band_iter < num_bands; band_iter++) {
1946                for (idx = 0; idx < 3; idx++) {
1947                        err = hpi_tuner_query_frequency(h_control,
1948                                idx, tuner_bands[band_iter],
1949                                &temp_freq_range[idx]);
1950                        if (err != 0)
1951                                return err;
1952                }
1953
1954                /* skip band with bogus stepping */
1955                if (temp_freq_range[2] <= 0)
1956                        continue;
1957
1958                if (temp_freq_range[0] < freq_range[0])
1959                        freq_range[0] = temp_freq_range[0];
1960                if (temp_freq_range[1] > freq_range[1])
1961                        freq_range[1] = temp_freq_range[1];
1962                if (temp_freq_range[2] < freq_range[2])
1963                        freq_range[2] = temp_freq_range[2];
1964        }
1965
1966        uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
1967        uinfo->count = 1;
1968        uinfo->value.integer.min = ((int)freq_range[0]);
1969        uinfo->value.integer.max = ((int)freq_range[1]);
1970        uinfo->value.integer.step = ((int)freq_range[2]);
1971        return 0;
1972}
1973
1974static int snd_asihpi_tuner_freq_get(struct snd_kcontrol *kcontrol,
1975                                 struct snd_ctl_elem_value *ucontrol)
1976{
1977        u32 h_control = kcontrol->private_value;
1978        u32 freq;
1979
1980        hpi_handle_error(hpi_tuner_get_frequency(h_control, &freq));
1981        ucontrol->value.integer.value[0] = freq;
1982
1983        return 0;
1984}
1985
1986static int snd_asihpi_tuner_freq_put(struct snd_kcontrol *kcontrol,
1987                                 struct snd_ctl_elem_value *ucontrol)
1988{
1989        u32 h_control = kcontrol->private_value;
1990        u32 freq;
1991
1992        freq = ucontrol->value.integer.value[0];
1993        hpi_handle_error(hpi_tuner_set_frequency(h_control, freq));
1994
1995        return 1;
1996}
1997
1998/* Tuner control group initializer  */
1999static int __devinit snd_asihpi_tuner_add(struct snd_card_asihpi *asihpi,
2000                                        struct hpi_control *hpi_ctl)
2001{
2002        struct snd_card *card = asihpi->card;
2003        struct snd_kcontrol_new snd_control;
2004
2005        snd_control.private_value = hpi_ctl->h_control;
2006        snd_control.access = SNDRV_CTL_ELEM_ACCESS_READWRITE;
2007
2008        if (!hpi_tuner_get_gain(hpi_ctl->h_control, NULL)) {
2009                asihpi_ctl_init(&snd_control, hpi_ctl, "Gain");
2010                snd_control.info = snd_asihpi_tuner_gain_info;
2011                snd_control.get = snd_asihpi_tuner_gain_get;
2012                snd_control.put = snd_asihpi_tuner_gain_put;
2013
2014                if (ctl_add(card, &snd_control, asihpi) < 0)
2015                        return -EINVAL;
2016        }
2017
2018        asihpi_ctl_init(&snd_control, hpi_ctl, "Band");
2019        snd_control.info = snd_asihpi_tuner_band_info;
2020        snd_control.get = snd_asihpi_tuner_band_get;
2021        snd_control.put = snd_asihpi_tuner_band_put;
2022
2023        if (ctl_add(card, &snd_control, asihpi) < 0)
2024                return -EINVAL;
2025
2026        asihpi_ctl_init(&snd_control, hpi_ctl, "Freq");
2027        snd_control.info = snd_asihpi_tuner_freq_info;
2028        snd_control.get = snd_asihpi_tuner_freq_get;
2029        snd_control.put = snd_asihpi_tuner_freq_put;
2030
2031        return ctl_add(card, &snd_control, asihpi);
2032}
2033
2034/*------------------------------------------------------------
2035   Meter controls
2036 ------------------------------------------------------------*/
2037static int snd_asihpi_meter_info(struct snd_kcontrol *kcontrol,
2038                                 struct snd_ctl_elem_info *uinfo)
2039{
2040        u32 h_control = kcontrol->private_value;
2041        u32 count;
2042        u16 err;
2043        err = hpi_meter_query_channels(h_control, &count);
2044        if (err)
2045                count = HPI_MAX_CHANNELS;
2046
2047        uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2048        uinfo->count = count;
2049        uinfo->value.integer.min = 0;
2050        uinfo->value.integer.max = 0x7FFFFFFF;
2051        return 0;
2052}
2053
2054/* linear values for 10dB steps */
2055static int log2lin[] = {
2056        0x7FFFFFFF, /* 0dB */
2057        679093956,
2058        214748365,
2059         67909396,
2060         21474837,
2061          6790940,
2062          2147484, /* -60dB */
2063           679094,
2064           214748, /* -80 */
2065            67909,
2066            21475, /* -100 */
2067             6791,
2068             2147,
2069              679,
2070              214,
2071               68,
2072               21,
2073                7,
2074                2
2075};
2076
2077static int snd_asihpi_meter_get(struct snd_kcontrol *kcontrol,
2078                                struct snd_ctl_elem_value *ucontrol)
2079{
2080        u32 h_control = kcontrol->private_value;
2081        short an_gain_mB[HPI_MAX_CHANNELS], i;
2082        u16 err;
2083
2084        err = hpi_meter_get_peak(h_control, an_gain_mB);
2085
2086        for (i = 0; i < HPI_MAX_CHANNELS; i++) {
2087                if (err) {
2088                        ucontrol->value.integer.value[i] = 0;
2089                } else if (an_gain_mB[i] >= 0) {
2090                        ucontrol->value.integer.value[i] =
2091                                an_gain_mB[i] << 16;
2092                } else {
2093                        /* -ve is log value in millibels < -60dB,
2094                        * convert to (roughly!) linear,
2095                        */
2096                        ucontrol->value.integer.value[i] =
2097                                        log2lin[an_gain_mB[i] / -1000];
2098                }
2099        }
2100        return 0;
2101}
2102
2103static int __devinit snd_asihpi_meter_add(struct snd_card_asihpi *asihpi,
2104                                        struct hpi_control *hpi_ctl, int subidx)
2105{
2106        struct snd_card *card = asihpi->card;
2107        struct snd_kcontrol_new snd_control;
2108
2109        asihpi_ctl_init(&snd_control, hpi_ctl, "Meter");
2110        snd_control.access =
2111            SNDRV_CTL_ELEM_ACCESS_VOLATILE | SNDRV_CTL_ELEM_ACCESS_READ;
2112        snd_control.info = snd_asihpi_meter_info;
2113        snd_control.get = snd_asihpi_meter_get;
2114
2115        snd_control.index = subidx;
2116
2117        return ctl_add(card, &snd_control, asihpi);
2118}
2119
2120/*------------------------------------------------------------
2121   Multiplexer controls
2122 ------------------------------------------------------------*/
2123static int snd_card_asihpi_mux_count_sources(struct snd_kcontrol *snd_control)
2124{
2125        u32 h_control = snd_control->private_value;
2126        struct hpi_control hpi_ctl;
2127        int s, err;
2128        for (s = 0; s < 32; s++) {
2129                err = hpi_multiplexer_query_source(h_control, s,
2130                                                  &hpi_ctl.
2131                                                  src_node_type,
2132                                                  &hpi_ctl.
2133                                                  src_node_index);
2134                if (err)
2135                        break;
2136        }
2137        return s;
2138}
2139
2140static int snd_asihpi_mux_info(struct snd_kcontrol *kcontrol,
2141                               struct snd_ctl_elem_info *uinfo)
2142{
2143        int err;
2144        u16 src_node_type, src_node_index;
2145        u32 h_control = kcontrol->private_value;
2146
2147        uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
2148        uinfo->count = 1;
2149        uinfo->value.enumerated.items =
2150            snd_card_asihpi_mux_count_sources(kcontrol);
2151
2152        if (uinfo->value.enumerated.item >= uinfo->value.enumerated.items)
2153                uinfo->value.enumerated.item =
2154                    uinfo->value.enumerated.items - 1;
2155
2156        err =
2157            hpi_multiplexer_query_source(h_control,
2158                                        uinfo->value.enumerated.item,
2159                                        &src_node_type, &src_node_index);
2160
2161        sprintf(uinfo->value.enumerated.name, "%s %d",
2162                asihpi_src_names[src_node_type - HPI_SOURCENODE_NONE],
2163                src_node_index);
2164        return 0;
2165}
2166
2167static int snd_asihpi_mux_get(struct snd_kcontrol *kcontrol,
2168                              struct snd_ctl_elem_value *ucontrol)
2169{
2170        u32 h_control = kcontrol->private_value;
2171        u16 source_type, source_index;
2172        u16 src_node_type, src_node_index;
2173        int s;
2174
2175        hpi_handle_error(hpi_multiplexer_get_source(h_control,
2176                                &source_type, &source_index));
2177        /* Should cache this search result! */
2178        for (s = 0; s < 256; s++) {
2179                if (hpi_multiplexer_query_source(h_control, s,
2180                                            &src_node_type, &src_node_index))
2181                        break;
2182
2183                if ((source_type == src_node_type)
2184                    && (source_index == src_node_index)) {
2185                        ucontrol->value.enumerated.item[0] = s;
2186                        return 0;
2187                }
2188        }
2189        snd_printd(KERN_WARNING
2190                "Control %x failed to match mux source %hu %hu\n",
2191                h_control, source_type, source_index);
2192        ucontrol->value.enumerated.item[0] = 0;
2193        return 0;
2194}
2195
2196static int snd_asihpi_mux_put(struct snd_kcontrol *kcontrol,
2197                              struct snd_ctl_elem_value *ucontrol)
2198{
2199        int change;
2200        u32 h_control = kcontrol->private_value;
2201        u16 source_type, source_index;
2202        u16 e;
2203
2204        change = 1;
2205
2206        e = hpi_multiplexer_query_source(h_control,
2207                                    ucontrol->value.enumerated.item[0],
2208                                    &source_type, &source_index);
2209        if (!e)
2210                hpi_handle_error(
2211                        hpi_multiplexer_set_source(h_control,
2212                                                source_type, source_index));
2213        return change;
2214}
2215
2216
2217static int  __devinit snd_asihpi_mux_add(struct snd_card_asihpi *asihpi,
2218                                        struct hpi_control *hpi_ctl)
2219{
2220        struct snd_card *card = asihpi->card;
2221        struct snd_kcontrol_new snd_control;
2222
2223        asihpi_ctl_init(&snd_control, hpi_ctl, "Route");
2224        snd_control.access = SNDRV_CTL_ELEM_ACCESS_READWRITE;
2225        snd_control.info = snd_asihpi_mux_info;
2226        snd_control.get = snd_asihpi_mux_get;
2227        snd_control.put = snd_asihpi_mux_put;
2228
2229        return ctl_add(card, &snd_control, asihpi);
2230
2231}
2232
2233/*------------------------------------------------------------
2234   Channel mode controls
2235 ------------------------------------------------------------*/
2236static int snd_asihpi_cmode_info(struct snd_kcontrol *kcontrol,
2237                                 struct snd_ctl_elem_info *uinfo)
2238{
2239        static const char * const mode_names[HPI_CHANNEL_MODE_LAST + 1] = {
2240                "invalid",
2241                "Normal", "Swap",
2242                "From Left", "From Right",
2243                "To Left", "To Right"
2244        };
2245
2246        u32 h_control = kcontrol->private_value;
2247        u16 mode;
2248        int i;
2249        u16 mode_map[6];
2250        int valid_modes = 0;
2251
2252        /* HPI channel mode values can be from 1 to 6
2253        Some adapters only support a contiguous subset
2254        */
2255        for (i = 0; i < HPI_CHANNEL_MODE_LAST; i++)
2256                if (!hpi_channel_mode_query_mode(
2257                        h_control, i, &mode)) {
2258                        mode_map[valid_modes] = mode;
2259                        valid_modes++;
2260                        }
2261
2262        if (!valid_modes)
2263                return -EINVAL;
2264
2265        uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
2266        uinfo->count = 1;
2267        uinfo->value.enumerated.items = valid_modes;
2268
2269        if (uinfo->value.enumerated.item >= valid_modes)
2270                uinfo->value.enumerated.item = valid_modes - 1;
2271
2272        strcpy(uinfo->value.enumerated.name,
2273               mode_names[mode_map[uinfo->value.enumerated.item]]);
2274
2275        return 0;
2276}
2277
2278static int snd_asihpi_cmode_get(struct snd_kcontrol *kcontrol,
2279                                struct snd_ctl_elem_value *ucontrol)
2280{
2281        u32 h_control = kcontrol->private_value;
2282        u16 mode;
2283
2284        if (hpi_channel_mode_get(h_control, &mode))
2285                mode = 1;
2286
2287        ucontrol->value.enumerated.item[0] = mode - 1;
2288
2289        return 0;
2290}
2291
2292static int snd_asihpi_cmode_put(struct snd_kcontrol *kcontrol,
2293                                struct snd_ctl_elem_value *ucontrol)
2294{
2295        int change;
2296        u32 h_control = kcontrol->private_value;
2297
2298        change = 1;
2299
2300        hpi_handle_error(hpi_channel_mode_set(h_control,
2301                           ucontrol->value.enumerated.item[0] + 1));
2302        return change;
2303}
2304
2305
2306static int __devinit snd_asihpi_cmode_add(struct snd_card_asihpi *asihpi,
2307                                        struct hpi_control *hpi_ctl)
2308{
2309        struct snd_card *card = asihpi->card;
2310        struct snd_kcontrol_new snd_control;
2311
2312        asihpi_ctl_init(&snd_control, hpi_ctl, "Mode");
2313        snd_control.access = SNDRV_CTL_ELEM_ACCESS_READWRITE;
2314        snd_control.info = snd_asihpi_cmode_info;
2315        snd_control.get = snd_asihpi_cmode_get;
2316        snd_control.put = snd_asihpi_cmode_put;
2317
2318        return ctl_add(card, &snd_control, asihpi);
2319}
2320
2321/*------------------------------------------------------------
2322   Sampleclock source  controls
2323 ------------------------------------------------------------*/
2324static char *sampleclock_sources[MAX_CLOCKSOURCES] = {
2325        "N/A", "Local PLL", "Digital Sync", "Word External", "Word Header",
2326        "SMPTE", "Digital1", "Auto", "Network", "Invalid",
2327        "Prev Module",
2328        "Digital2", "Digital3", "Digital4", "Digital5",
2329        "Digital6", "Digital7", "Digital8"};
2330
2331static int snd_asihpi_clksrc_info(struct snd_kcontrol *kcontrol,
2332                                  struct snd_ctl_elem_info *uinfo)
2333{
2334        struct snd_card_asihpi *asihpi =
2335                        (struct snd_card_asihpi *)(kcontrol->private_data);
2336        struct clk_cache *clkcache = &asihpi->cc;
2337        uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
2338        uinfo->count = 1;
2339        uinfo->value.enumerated.items = clkcache->count;
2340
2341        if (uinfo->value.enumerated.item >= uinfo->value.enumerated.items)
2342                uinfo->value.enumerated.item =
2343                                uinfo->value.enumerated.items - 1;
2344
2345        strcpy(uinfo->value.enumerated.name,
2346               clkcache->s[uinfo->value.enumerated.item].name);
2347        return 0;
2348}
2349
2350static int snd_asihpi_clksrc_get(struct snd_kcontrol *kcontrol,
2351                                 struct snd_ctl_elem_value *ucontrol)
2352{
2353        struct snd_card_asihpi *asihpi =
2354                        (struct snd_card_asihpi *)(kcontrol->private_data);
2355        struct clk_cache *clkcache = &asihpi->cc;
2356        u32 h_control = kcontrol->private_value;
2357        u16 source, srcindex = 0;
2358        int i;
2359
2360        ucontrol->value.enumerated.item[0] = 0;
2361        if (hpi_sample_clock_get_source(h_control, &source))
2362                source = 0;
2363
2364        if (source == HPI_SAMPLECLOCK_SOURCE_AESEBU_INPUT)
2365                if (hpi_sample_clock_get_source_index(h_control, &srcindex))
2366                        srcindex = 0;
2367
2368        for (i = 0; i < clkcache->count; i++)
2369                if ((clkcache->s[i].source == source) &&
2370                        (clkcache->s[i].index == srcindex))
2371                        break;
2372
2373        ucontrol->value.enumerated.item[0] = i;
2374
2375        return 0;
2376}
2377
2378static int snd_asihpi_clksrc_put(struct snd_kcontrol *kcontrol,
2379                                 struct snd_ctl_elem_value *ucontrol)
2380{
2381        struct snd_card_asihpi *asihpi =
2382                        (struct snd_card_asihpi *)(kcontrol->private_data);
2383        struct clk_cache *clkcache = &asihpi->cc;
2384        int change, item;
2385        u32 h_control = kcontrol->private_value;
2386
2387        change = 1;
2388        item = ucontrol->value.enumerated.item[0];
2389        if (item >= clkcache->count)
2390                item = clkcache->count-1;
2391
2392        hpi_handle_error(hpi_sample_clock_set_source(
2393                                h_control, clkcache->s[item].source));
2394
2395        if (clkcache->s[item].source == HPI_SAMPLECLOCK_SOURCE_AESEBU_INPUT)
2396                hpi_handle_error(hpi_sample_clock_set_source_index(
2397                                h_control, clkcache->s[item].index));
2398        return change;
2399}
2400
2401/*------------------------------------------------------------
2402   Clkrate controls
2403 ------------------------------------------------------------*/
2404/* Need to change this to enumerated control with list of rates */
2405static int snd_asihpi_clklocal_info(struct snd_kcontrol *kcontrol,
2406                                   struct snd_ctl_elem_info *uinfo)
2407{
2408        uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2409        uinfo->count = 1;
2410        uinfo->value.integer.min = 8000;
2411        uinfo->value.integer.max = 192000;
2412        uinfo->value.integer.step = 100;
2413
2414        return 0;
2415}
2416
2417static int snd_asihpi_clklocal_get(struct snd_kcontrol *kcontrol,
2418                                  struct snd_ctl_elem_value *ucontrol)
2419{
2420        u32 h_control = kcontrol->private_value;
2421        u32 rate;
2422        u16 e;
2423
2424        e = hpi_sample_clock_get_local_rate(h_control, &rate);
2425        if (!e)
2426                ucontrol->value.integer.value[0] = rate;
2427        else
2428                ucontrol->value.integer.value[0] = 0;
2429        return 0;
2430}
2431
2432static int snd_asihpi_clklocal_put(struct snd_kcontrol *kcontrol,
2433                                  struct snd_ctl_elem_value *ucontrol)
2434{
2435        int change;
2436        u32 h_control = kcontrol->private_value;
2437
2438        /*  change = asihpi->mixer_clkrate[addr][0] != left ||
2439           asihpi->mixer_clkrate[addr][1] != right;
2440         */
2441        change = 1;
2442        hpi_handle_error(hpi_sample_clock_set_local_rate(h_control,
2443                                      ucontrol->value.integer.value[0]));
2444        return change;
2445}
2446
2447static int snd_asihpi_clkrate_info(struct snd_kcontrol *kcontrol,
2448                                   struct snd_ctl_elem_info *uinfo)
2449{
2450        uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2451        uinfo->count = 1;
2452        uinfo->value.integer.min = 8000;
2453        uinfo->value.integer.max = 192000;
2454        uinfo->value.integer.step = 100;
2455
2456        return 0;
2457}
2458
2459static int snd_asihpi_clkrate_get(struct snd_kcontrol *kcontrol,
2460                                  struct snd_ctl_elem_value *ucontrol)
2461{
2462        u32 h_control = kcontrol->private_value;
2463        u32 rate;
2464        u16 e;
2465
2466        e = hpi_sample_clock_get_sample_rate(h_control, &rate);
2467        if (!e)
2468                ucontrol->value.integer.value[0] = rate;
2469        else
2470                ucontrol->value.integer.value[0] = 0;
2471        return 0;
2472}
2473
2474static int __devinit snd_asihpi_sampleclock_add(struct snd_card_asihpi *asihpi,
2475                                        struct hpi_control *hpi_ctl)
2476{
2477        struct snd_card *card = asihpi->card;
2478        struct snd_kcontrol_new snd_control;
2479
2480        struct clk_cache *clkcache = &asihpi->cc;
2481        u32 hSC =  hpi_ctl->h_control;
2482        int has_aes_in = 0;
2483        int i, j;
2484        u16 source;
2485
2486        snd_control.private_value = hpi_ctl->h_control;
2487
2488        clkcache->has_local = 0;
2489
2490        for (i = 0; i <= HPI_SAMPLECLOCK_SOURCE_LAST; i++) {
2491                if  (hpi_sample_clock_query_source(hSC,
2492                                i, &source))
2493                        break;
2494                clkcache->s[i].source = source;
2495                clkcache->s[i].index = 0;
2496                clkcache->s[i].name = sampleclock_sources[source];
2497                if (source == HPI_SAMPLECLOCK_SOURCE_AESEBU_INPUT)
2498                        has_aes_in = 1;
2499                if (source == HPI_SAMPLECLOCK_SOURCE_LOCAL)
2500                        clkcache->has_local = 1;
2501        }
2502        if (has_aes_in)
2503                /* already will have picked up index 0 above */
2504                for (j = 1; j < 8; j++) {
2505                        if (hpi_sample_clock_query_source_index(hSC,
2506                                j, HPI_SAMPLECLOCK_SOURCE_AESEBU_INPUT,
2507                                &source))
2508                                break;
2509                        clkcache->s[i].source =
2510                                HPI_SAMPLECLOCK_SOURCE_AESEBU_INPUT;
2511                        clkcache->s[i].index = j;
2512                        clkcache->s[i].name = sampleclock_sources[
2513                                        j+HPI_SAMPLECLOCK_SOURCE_LAST];
2514                        i++;
2515                }
2516        clkcache->count = i;
2517
2518        asihpi_ctl_init(&snd_control, hpi_ctl, "Source");
2519        snd_control.access = SNDRV_CTL_ELEM_ACCESS_READWRITE ;
2520        snd_control.info = snd_asihpi_clksrc_info;
2521        snd_control.get = snd_asihpi_clksrc_get;
2522        snd_control.put = snd_asihpi_clksrc_put;
2523        if (ctl_add(card, &snd_control, asihpi) < 0)
2524                return -EINVAL;
2525
2526
2527        if (clkcache->has_local) {
2528                asihpi_ctl_init(&snd_control, hpi_ctl, "Localrate");
2529                snd_control.access = SNDRV_CTL_ELEM_ACCESS_READWRITE ;
2530                snd_control.info = snd_asihpi_clklocal_info;
2531                snd_control.get = snd_asihpi_clklocal_get;
2532                snd_control.put = snd_asihpi_clklocal_put;
2533
2534
2535                if (ctl_add(card, &snd_control, asihpi) < 0)
2536                        return -EINVAL;
2537        }
2538
2539        asihpi_ctl_init(&snd_control, hpi_ctl, "Rate");
2540        snd_control.access =
2541            SNDRV_CTL_ELEM_ACCESS_VOLATILE | SNDRV_CTL_ELEM_ACCESS_READ;
2542        snd_control.info = snd_asihpi_clkrate_info;
2543        snd_control.get = snd_asihpi_clkrate_get;
2544
2545        return ctl_add(card, &snd_control, asihpi);
2546}
2547/*------------------------------------------------------------
2548   Mixer
2549 ------------------------------------------------------------*/
2550
2551static int __devinit snd_card_asihpi_mixer_new(struct snd_card_asihpi *asihpi)
2552{
2553        struct snd_card *card = asihpi->card;
2554        unsigned int idx = 0;
2555        unsigned int subindex = 0;
2556        int err;
2557        struct hpi_control hpi_ctl, prev_ctl;
2558
2559        if (snd_BUG_ON(!asihpi))
2560                return -EINVAL;
2561        strcpy(card->mixername, "Asihpi Mixer");
2562
2563        err =
2564            hpi_mixer_open(asihpi->hpi->adapter->index,
2565                          &asihpi->h_mixer);
2566        hpi_handle_error(err);
2567        if (err)
2568                return -err;
2569
2570        memset(&prev_ctl, 0, sizeof(prev_ctl));
2571        prev_ctl.control_type = -1;
2572
2573        for (idx = 0; idx < 2000; idx++) {
2574                err = hpi_mixer_get_control_by_index(
2575                                asihpi->h_mixer,
2576                                idx,
2577                                &hpi_ctl.src_node_type,
2578                                &hpi_ctl.src_node_index,
2579                                &hpi_ctl.dst_node_type,
2580                                &hpi_ctl.dst_node_index,
2581                                &hpi_ctl.control_type,
2582                                &hpi_ctl.h_control);
2583                if (err) {
2584                        if (err == HPI_ERROR_CONTROL_DISABLED) {
2585                                if (mixer_dump)
2586                                        snd_printk(KERN_INFO
2587                                                   "Disabled HPI Control(%d)\n",
2588                                                   idx);
2589                                continue;
2590                        } else
2591                                break;
2592
2593                }
2594
2595                hpi_ctl.src_node_type -= HPI_SOURCENODE_NONE;
2596                hpi_ctl.dst_node_type -= HPI_DESTNODE_NONE;
2597
2598                /* ASI50xx in SSX mode has multiple meters on the same node.
2599                   Use subindex to create distinct ALSA controls
2600                   for any duplicated controls.
2601                */
2602                if ((hpi_ctl.control_type == prev_ctl.control_type) &&
2603                    (hpi_ctl.src_node_type == prev_ctl.src_node_type) &&
2604                    (hpi_ctl.src_node_index == prev_ctl.src_node_index) &&
2605                    (hpi_ctl.dst_node_type == prev_ctl.dst_node_type) &&
2606                    (hpi_ctl.dst_node_index == prev_ctl.dst_node_index))
2607                        subindex++;
2608                else
2609                        subindex = 0;
2610
2611                prev_ctl = hpi_ctl;
2612
2613                switch (hpi_ctl.control_type) {
2614                case HPI_CONTROL_VOLUME:
2615                        err = snd_asihpi_volume_add(asihpi, &hpi_ctl);
2616                        break;
2617                case HPI_CONTROL_LEVEL:
2618                        err = snd_asihpi_level_add(asihpi, &hpi_ctl);
2619                        break;
2620                case HPI_CONTROL_MULTIPLEXER:
2621                        err = snd_asihpi_mux_add(asihpi, &hpi_ctl);
2622                        break;
2623                case HPI_CONTROL_CHANNEL_MODE:
2624                        err = snd_asihpi_cmode_add(asihpi, &hpi_ctl);
2625                        break;
2626                case HPI_CONTROL_METER:
2627                        err = snd_asihpi_meter_add(asihpi, &hpi_ctl, subindex);
2628                        break;
2629                case HPI_CONTROL_SAMPLECLOCK:
2630                        err = snd_asihpi_sampleclock_add(
2631                                                asihpi, &hpi_ctl);
2632                        break;
2633                case HPI_CONTROL_CONNECTION:    /* ignore these */
2634                        continue;
2635                case HPI_CONTROL_TUNER:
2636                        err = snd_asihpi_tuner_add(asihpi, &hpi_ctl);
2637                        break;
2638                case HPI_CONTROL_AESEBU_TRANSMITTER:
2639                        err = snd_asihpi_aesebu_tx_add(asihpi, &hpi_ctl);
2640                        break;
2641                case HPI_CONTROL_AESEBU_RECEIVER:
2642                        err = snd_asihpi_aesebu_rx_add(asihpi, &hpi_ctl);
2643                        break;
2644                case HPI_CONTROL_VOX:
2645                case HPI_CONTROL_BITSTREAM:
2646                case HPI_CONTROL_MICROPHONE:
2647                case HPI_CONTROL_PARAMETRIC_EQ:
2648                case HPI_CONTROL_COMPANDER:
2649                default:
2650                        if (mixer_dump)
2651                                snd_printk(KERN_INFO
2652                                        "Untranslated HPI Control"
2653                                        "(%d) %d %d %d %d %d\n",
2654                                        idx,
2655                                        hpi_ctl.control_type,
2656                                        hpi_ctl.src_node_type,
2657                                        hpi_ctl.src_node_index,
2658                                        hpi_ctl.dst_node_type,
2659                                        hpi_ctl.dst_node_index);
2660                        continue;
2661                };
2662                if (err < 0)
2663                        return err;
2664        }
2665        if (HPI_ERROR_INVALID_OBJ_INDEX != err)
2666                hpi_handle_error(err);
2667
2668        snd_printk(KERN_INFO "%d mixer controls found\n", idx);
2669
2670        return 0;
2671}
2672
2673/*------------------------------------------------------------
2674   /proc interface
2675 ------------------------------------------------------------*/
2676
2677static void
2678snd_asihpi_proc_read(struct snd_info_entry *entry,
2679                        struct snd_info_buffer *buffer)
2680{
2681        struct snd_card_asihpi *asihpi = entry->private_data;
2682        u32 h_control;
2683        u32 rate = 0;
2684        u16 source = 0;
2685
2686        u16 num_outstreams;
2687        u16 num_instreams;
2688        u16 version;
2689        u32 serial_number;
2690        u16 type;
2691
2692        int err;
2693
2694        snd_iprintf(buffer, "ASIHPI driver proc file\n");
2695
2696        hpi_handle_error(hpi_adapter_get_info(asihpi->hpi->adapter->index,
2697                        &num_outstreams, &num_instreams,
2698                        &version, &serial_number, &type));
2699
2700        snd_iprintf(buffer,
2701                        "Adapter type ASI%4X\nHardware Index %d\n"
2702                        "%d outstreams\n%d instreams\n",
2703                        type, asihpi->hpi->adapter->index,
2704                        num_outstreams, num_instreams);
2705
2706        snd_iprintf(buffer,
2707                "Serial#%d\nHardware version %c%d\nDSP code version %03d\n",
2708                serial_number, ((version >> 3) & 0xf) + 'A', version & 0x7,
2709                ((version >> 13) * 100) + ((version >> 7) & 0x3f));
2710
2711        err = hpi_mixer_get_control(asihpi->h_mixer,
2712                                  HPI_SOURCENODE_CLOCK_SOURCE, 0, 0, 0,
2713                                  HPI_CONTROL_SAMPLECLOCK, &h_control);
2714
2715        if (!err) {
2716                err = hpi_sample_clock_get_sample_rate(h_control, &rate);
2717                err += hpi_sample_clock_get_source(h_control, &source);
2718
2719                if (!err)
2720                        snd_iprintf(buffer, "Sample Clock %dHz, source %s\n",
2721                        rate, sampleclock_sources[source]);
2722        }
2723}
2724
2725static void __devinit snd_asihpi_proc_init(struct snd_card_asihpi *asihpi)
2726{
2727        struct snd_info_entry *entry;
2728
2729        if (!snd_card_proc_new(asihpi->card, "info", &entry))
2730                snd_info_set_text_ops(entry, asihpi, snd_asihpi_proc_read);
2731}
2732
2733/*------------------------------------------------------------
2734   HWDEP
2735 ------------------------------------------------------------*/
2736
2737static int snd_asihpi_hpi_open(struct snd_hwdep *hw, struct file *file)
2738{
2739        if (enable_hpi_hwdep)
2740                return 0;
2741        else
2742                return -ENODEV;
2743
2744}
2745
2746static int snd_asihpi_hpi_release(struct snd_hwdep *hw, struct file *file)
2747{
2748        if (enable_hpi_hwdep)
2749                return asihpi_hpi_release(file);
2750        else
2751                return -ENODEV;
2752}
2753
2754static int snd_asihpi_hpi_ioctl(struct snd_hwdep *hw, struct file *file,
2755                                unsigned int cmd, unsigned long arg)
2756{
2757        if (enable_hpi_hwdep)
2758                return asihpi_hpi_ioctl(file, cmd, arg);
2759        else
2760                return -ENODEV;
2761}
2762
2763
2764/* results in /dev/snd/hwC#D0 file for each card with index #
2765   also /proc/asound/hwdep will contain '#-00: asihpi (HPI) for each card'
2766*/
2767static int __devinit snd_asihpi_hpi_new(struct snd_card_asihpi *asihpi,
2768        int device, struct snd_hwdep **rhwdep)
2769{
2770        struct snd_hwdep *hw;
2771        int err;
2772
2773        if (rhwdep)
2774                *rhwdep = NULL;
2775        err = snd_hwdep_new(asihpi->card, "HPI", device, &hw);
2776        if (err < 0)
2777                return err;
2778        strcpy(hw->name, "asihpi (HPI)");
2779        hw->iface = SNDRV_HWDEP_IFACE_LAST;
2780        hw->ops.open = snd_asihpi_hpi_open;
2781        hw->ops.ioctl = snd_asihpi_hpi_ioctl;
2782        hw->ops.release = snd_asihpi_hpi_release;
2783        hw->private_data = asihpi;
2784        if (rhwdep)
2785                *rhwdep = hw;
2786        return 0;
2787}
2788
2789/*------------------------------------------------------------
2790   CARD
2791 ------------------------------------------------------------*/
2792static int __devinit snd_asihpi_probe(struct pci_dev *pci_dev,
2793                                       const struct pci_device_id *pci_id)
2794{
2795        int err;
2796        struct hpi_adapter *hpi;
2797        struct snd_card *card;
2798        struct snd_card_asihpi *asihpi;
2799
2800        u32 h_control;
2801        u32 h_stream;
2802        u32 adapter_index;
2803
2804        static int dev;
2805        if (dev >= SNDRV_CARDS)
2806                return -ENODEV;
2807
2808        /* Should this be enable[hpi->index] ? */
2809        if (!enable[dev]) {
2810                dev++;
2811                return -ENOENT;
2812        }
2813
2814        /* Initialise low-level HPI driver */
2815        err = asihpi_adapter_probe(pci_dev, pci_id);
2816        if (err < 0)
2817                return err;
2818
2819        hpi = pci_get_drvdata(pci_dev);
2820        adapter_index = hpi->adapter->index;
2821        /* first try to give the card the same index as its hardware index */
2822        err = snd_card_create(adapter_index,
2823                              id[adapter_index], THIS_MODULE,
2824                              sizeof(struct snd_card_asihpi),
2825                              &card);
2826        if (err < 0) {
2827                /* if that fails, try the default index==next available */
2828                err =
2829                    snd_card_create(index[dev], id[dev],
2830                                    THIS_MODULE,
2831                                    sizeof(struct snd_card_asihpi),
2832                                    &card);
2833                if (err < 0)
2834                        return err;
2835                snd_printk(KERN_WARNING
2836                        "**** WARNING **** Adapter index %d->ALSA index %d\n",
2837                        adapter_index, card->number);
2838        }
2839
2840        snd_card_set_dev(card, &pci_dev->dev);
2841
2842        asihpi = card->private_data;
2843        asihpi->card = card;
2844        asihpi->pci = pci_dev;
2845        asihpi->hpi = hpi;
2846
2847        snd_printk(KERN_INFO "adapter ID=%4X index=%d\n",
2848                        asihpi->hpi->adapter->type, adapter_index);
2849
2850        err = hpi_adapter_get_property(adapter_index,
2851                HPI_ADAPTER_PROPERTY_CAPS1,
2852                NULL, &asihpi->support_grouping);
2853        if (err)
2854                asihpi->support_grouping = 0;
2855
2856        err = hpi_adapter_get_property(adapter_index,
2857                HPI_ADAPTER_PROPERTY_CAPS2,
2858                &asihpi->support_mrx, NULL);
2859        if (err)
2860                asihpi->support_mrx = 0;
2861
2862        err = hpi_adapter_get_property(adapter_index,
2863                HPI_ADAPTER_PROPERTY_INTERVAL,
2864                NULL, &asihpi->update_interval_frames);
2865        if (err)
2866                asihpi->update_interval_frames = 512;
2867
2868        if (!asihpi->can_dma)
2869                asihpi->update_interval_frames *= 2;
2870
2871        hpi_handle_error(hpi_instream_open(adapter_index,
2872                             0, &h_stream));
2873
2874        err = hpi_instream_host_buffer_free(h_stream);
2875        asihpi->can_dma = (!err);
2876
2877        hpi_handle_error(hpi_instream_close(h_stream));
2878
2879        err = hpi_adapter_get_property(adapter_index,
2880                HPI_ADAPTER_PROPERTY_CURCHANNELS,
2881                &asihpi->in_max_chans, &asihpi->out_max_chans);
2882        if (err) {
2883                asihpi->in_max_chans = 2;
2884                asihpi->out_max_chans = 2;
2885        }
2886
2887        if (asihpi->out_max_chans > 2) { /* assume LL mode */
2888                asihpi->out_min_chans = asihpi->out_max_chans;
2889                asihpi->in_min_chans = asihpi->in_max_chans;
2890                asihpi->support_grouping = 0;
2891        } else {
2892                asihpi->out_min_chans = 1;
2893                asihpi->in_min_chans = 1;
2894        }
2895
2896        snd_printk(KERN_INFO "Has dma:%d, grouping:%d, mrx:%d\n",
2897                        asihpi->can_dma,
2898                        asihpi->support_grouping,
2899                        asihpi->support_mrx
2900              );
2901
2902        err = snd_card_asihpi_pcm_new(asihpi, 0);
2903        if (err < 0) {
2904                snd_printk(KERN_ERR "pcm_new failed\n");
2905                goto __nodev;
2906        }
2907        err = snd_card_asihpi_mixer_new(asihpi);
2908        if (err < 0) {
2909                snd_printk(KERN_ERR "mixer_new failed\n");
2910                goto __nodev;
2911        }
2912
2913        err = hpi_mixer_get_control(asihpi->h_mixer,
2914                                  HPI_SOURCENODE_CLOCK_SOURCE, 0, 0, 0,
2915                                  HPI_CONTROL_SAMPLECLOCK, &h_control);
2916
2917        if (!err)
2918                err = hpi_sample_clock_set_local_rate(
2919                        h_control, adapter_fs);
2920
2921        snd_asihpi_proc_init(asihpi);
2922
2923        /* always create, can be enabled or disabled dynamically
2924            by enable_hwdep  module param*/
2925        snd_asihpi_hpi_new(asihpi, 0, NULL);
2926
2927        strcpy(card->driver, "ASIHPI");
2928
2929        sprintf(card->shortname, "AudioScience ASI%4X",
2930                        asihpi->hpi->adapter->type);
2931        sprintf(card->longname, "%s %i",
2932                        card->shortname, adapter_index);
2933        err = snd_card_register(card);
2934
2935        if (!err) {
2936                hpi->snd_card = card;
2937                dev++;
2938                return 0;
2939        }
2940__nodev:
2941        snd_card_free(card);
2942        snd_printk(KERN_ERR "snd_asihpi_probe error %d\n", err);
2943        return err;
2944
2945}
2946
2947static void __devexit snd_asihpi_remove(struct pci_dev *pci_dev)
2948{
2949        struct hpi_adapter *hpi = pci_get_drvdata(pci_dev);
2950        snd_card_free(hpi->snd_card);
2951        hpi->snd_card = NULL;
2952        asihpi_adapter_remove(pci_dev);
2953}
2954
2955static DEFINE_PCI_DEVICE_TABLE(asihpi_pci_tbl) = {
2956        {HPI_PCI_VENDOR_ID_TI, HPI_PCI_DEV_ID_DSP6205,
2957                HPI_PCI_VENDOR_ID_AUDIOSCIENCE, PCI_ANY_ID, 0, 0,
2958                (kernel_ulong_t)HPI_6205},
2959        {HPI_PCI_VENDOR_ID_TI, HPI_PCI_DEV_ID_PCI2040,
2960                HPI_PCI_VENDOR_ID_AUDIOSCIENCE, PCI_ANY_ID, 0, 0,
2961                (kernel_ulong_t)HPI_6000},
2962        {0,}
2963};
2964MODULE_DEVICE_TABLE(pci, asihpi_pci_tbl);
2965
2966static struct pci_driver driver = {
2967        .name = KBUILD_MODNAME,
2968        .id_table = asihpi_pci_tbl,
2969        .probe = snd_asihpi_probe,
2970        .remove = __devexit_p(snd_asihpi_remove),
2971#ifdef CONFIG_PM
2972/*      .suspend = snd_asihpi_suspend,
2973        .resume = snd_asihpi_resume, */
2974#endif
2975};
2976
2977static int __init snd_asihpi_init(void)
2978{
2979        asihpi_init();
2980        return pci_register_driver(&driver);
2981}
2982
2983static void __exit snd_asihpi_exit(void)
2984{
2985
2986        pci_unregister_driver(&driver);
2987        asihpi_exit();
2988}
2989
2990module_init(snd_asihpi_init)
2991module_exit(snd_asihpi_exit)
2992
2993