linux/sound/soc/codecs/stac9766.c
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   1/*
   2 * stac9766.c  --  ALSA SoC STAC9766 codec support
   3 *
   4 * Copyright 2009 Jon Smirl, Digispeaker
   5 * Author: Jon Smirl <jonsmirl@gmail.com>
   6 *
   7 *  This program is free software; you can redistribute  it and/or modify it
   8 *  under  the terms of  the GNU General  Public License as published by the
   9 *  Free Software Foundation;  either version 2 of the  License, or (at your
  10 *  option) any later version.
  11 *
  12 *  Features:-
  13 *
  14 *   o Support for AC97 Codec, S/PDIF
  15 */
  16
  17#include <linux/init.h>
  18#include <linux/slab.h>
  19#include <linux/module.h>
  20#include <linux/device.h>
  21#include <sound/core.h>
  22#include <sound/pcm.h>
  23#include <sound/ac97_codec.h>
  24#include <sound/initval.h>
  25#include <sound/pcm_params.h>
  26#include <sound/soc.h>
  27#include <sound/tlv.h>
  28
  29#include "stac9766.h"
  30
  31#define STAC9766_VENDOR_ID 0x83847666
  32#define STAC9766_VENDOR_ID_MASK 0xffffffff
  33
  34/*
  35 * STAC9766 register cache
  36 */
  37static const u16 stac9766_reg[] = {
  38        0x6A90, 0x8000, 0x8000, 0x8000, /* 6 */
  39        0x0000, 0x0000, 0x8008, 0x8008, /* e */
  40        0x8808, 0x8808, 0x8808, 0x8808, /* 16 */
  41        0x8808, 0x0000, 0x8000, 0x0000, /* 1e */
  42        0x0000, 0x0000, 0x0000, 0x000f, /* 26 */
  43        0x0a05, 0x0400, 0xbb80, 0x0000, /* 2e */
  44        0x0000, 0xbb80, 0x0000, 0x0000, /* 36 */
  45        0x0000, 0x2000, 0x0000, 0x0100, /* 3e */
  46        0x0000, 0x0000, 0x0080, 0x0000, /* 46 */
  47        0x0000, 0x0000, 0x0003, 0xffff, /* 4e */
  48        0x0000, 0x0000, 0x0000, 0x0000, /* 56 */
  49        0x4000, 0x0000, 0x0000, 0x0000, /* 5e */
  50        0x1201, 0xFFFF, 0xFFFF, 0x0000, /* 66 */
  51        0x0000, 0x0000, 0x0000, 0x0000, /* 6e */
  52        0x0000, 0x0000, 0x0000, 0x0006, /* 76 */
  53        0x0000, 0x0000, 0x0000, 0x0000, /* 7e */
  54};
  55
  56static const char *stac9766_record_mux[] = {"Mic", "CD", "Video", "AUX",
  57                        "Line", "Stereo Mix", "Mono Mix", "Phone"};
  58static const char *stac9766_mono_mux[] = {"Mix", "Mic"};
  59static const char *stac9766_mic_mux[] = {"Mic1", "Mic2"};
  60static const char *stac9766_SPDIF_mux[] = {"PCM", "ADC Record"};
  61static const char *stac9766_popbypass_mux[] = {"Normal", "Bypass Mixer"};
  62static const char *stac9766_record_all_mux[] = {"All analog",
  63        "Analog plus DAC"};
  64static const char *stac9766_boost1[] = {"0dB", "10dB"};
  65static const char *stac9766_boost2[] = {"0dB", "20dB"};
  66static const char *stac9766_stereo_mic[] = {"Off", "On"};
  67
  68static SOC_ENUM_DOUBLE_DECL(stac9766_record_enum,
  69                            AC97_REC_SEL, 8, 0, stac9766_record_mux);
  70static SOC_ENUM_SINGLE_DECL(stac9766_mono_enum,
  71                            AC97_GENERAL_PURPOSE, 9, stac9766_mono_mux);
  72static SOC_ENUM_SINGLE_DECL(stac9766_mic_enum,
  73                            AC97_GENERAL_PURPOSE, 8, stac9766_mic_mux);
  74static SOC_ENUM_SINGLE_DECL(stac9766_SPDIF_enum,
  75                            AC97_STAC_DA_CONTROL, 1, stac9766_SPDIF_mux);
  76static SOC_ENUM_SINGLE_DECL(stac9766_popbypass_enum,
  77                            AC97_GENERAL_PURPOSE, 15, stac9766_popbypass_mux);
  78static SOC_ENUM_SINGLE_DECL(stac9766_record_all_enum,
  79                            AC97_STAC_ANALOG_SPECIAL, 12,
  80                            stac9766_record_all_mux);
  81static SOC_ENUM_SINGLE_DECL(stac9766_boost1_enum,
  82                            AC97_MIC, 6, stac9766_boost1); /* 0/10dB */
  83static SOC_ENUM_SINGLE_DECL(stac9766_boost2_enum,
  84                            AC97_STAC_ANALOG_SPECIAL, 2, stac9766_boost2); /* 0/20dB */
  85static SOC_ENUM_SINGLE_DECL(stac9766_stereo_mic_enum,
  86                            AC97_STAC_STEREO_MIC, 2, stac9766_stereo_mic);
  87
  88static const SNDRV_CTL_TLVD_DECLARE_DB_SCALE(master_tlv, -4650, 150, 0);
  89static const SNDRV_CTL_TLVD_DECLARE_DB_SCALE(record_tlv,     0, 150, 0);
  90static const SNDRV_CTL_TLVD_DECLARE_DB_SCALE(beep_tlv,   -4500, 300, 0);
  91static const SNDRV_CTL_TLVD_DECLARE_DB_SCALE(mix_tlv,    -3450, 150, 0);
  92
  93static const struct snd_kcontrol_new stac9766_snd_ac97_controls[] = {
  94        SOC_DOUBLE_TLV("Speaker Volume", AC97_MASTER, 8, 0, 31, 1, master_tlv),
  95        SOC_SINGLE("Speaker Switch", AC97_MASTER, 15, 1, 1),
  96        SOC_DOUBLE_TLV("Headphone Volume", AC97_HEADPHONE, 8, 0, 31, 1,
  97                       master_tlv),
  98        SOC_SINGLE("Headphone Switch", AC97_HEADPHONE, 15, 1, 1),
  99        SOC_SINGLE_TLV("Mono Out Volume", AC97_MASTER_MONO, 0, 31, 1,
 100                       master_tlv),
 101        SOC_SINGLE("Mono Out Switch", AC97_MASTER_MONO, 15, 1, 1),
 102
 103        SOC_DOUBLE_TLV("Record Volume", AC97_REC_GAIN, 8, 0, 15, 0, record_tlv),
 104        SOC_SINGLE("Record Switch", AC97_REC_GAIN, 15, 1, 1),
 105
 106
 107        SOC_SINGLE_TLV("Beep Volume", AC97_PC_BEEP, 1, 15, 1, beep_tlv),
 108        SOC_SINGLE("Beep Switch", AC97_PC_BEEP, 15, 1, 1),
 109        SOC_SINGLE("Beep Frequency", AC97_PC_BEEP, 5, 127, 1),
 110        SOC_SINGLE_TLV("Phone Volume", AC97_PHONE, 0, 31, 1, mix_tlv),
 111        SOC_SINGLE("Phone Switch", AC97_PHONE, 15, 1, 1),
 112
 113        SOC_ENUM("Mic Boost1", stac9766_boost1_enum),
 114        SOC_ENUM("Mic Boost2", stac9766_boost2_enum),
 115        SOC_SINGLE_TLV("Mic Volume", AC97_MIC, 0, 31, 1, mix_tlv),
 116        SOC_SINGLE("Mic Switch", AC97_MIC, 15, 1, 1),
 117        SOC_ENUM("Stereo Mic", stac9766_stereo_mic_enum),
 118
 119        SOC_DOUBLE_TLV("Line Volume", AC97_LINE, 8, 0, 31, 1, mix_tlv),
 120        SOC_SINGLE("Line Switch", AC97_LINE, 15, 1, 1),
 121        SOC_DOUBLE_TLV("CD Volume", AC97_CD, 8, 0, 31, 1, mix_tlv),
 122        SOC_SINGLE("CD Switch", AC97_CD, 15, 1, 1),
 123        SOC_DOUBLE_TLV("AUX Volume", AC97_AUX, 8, 0, 31, 1, mix_tlv),
 124        SOC_SINGLE("AUX Switch", AC97_AUX, 15, 1, 1),
 125        SOC_DOUBLE_TLV("Video Volume", AC97_VIDEO, 8, 0, 31, 1, mix_tlv),
 126        SOC_SINGLE("Video Switch", AC97_VIDEO, 15, 1, 1),
 127
 128        SOC_DOUBLE_TLV("DAC Volume", AC97_PCM, 8, 0, 31, 1, mix_tlv),
 129        SOC_SINGLE("DAC Switch", AC97_PCM, 15, 1, 1),
 130        SOC_SINGLE("Loopback Test Switch", AC97_GENERAL_PURPOSE, 7, 1, 0),
 131        SOC_SINGLE("3D Volume", AC97_3D_CONTROL, 3, 2, 1),
 132        SOC_SINGLE("3D Switch", AC97_GENERAL_PURPOSE, 13, 1, 0),
 133
 134        SOC_ENUM("SPDIF Mux", stac9766_SPDIF_enum),
 135        SOC_ENUM("Mic1/2 Mux", stac9766_mic_enum),
 136        SOC_ENUM("Record All Mux", stac9766_record_all_enum),
 137        SOC_ENUM("Record Mux", stac9766_record_enum),
 138        SOC_ENUM("Mono Mux", stac9766_mono_enum),
 139        SOC_ENUM("Pop Bypass Mux", stac9766_popbypass_enum),
 140};
 141
 142static int stac9766_ac97_write(struct snd_soc_codec *codec, unsigned int reg,
 143                               unsigned int val)
 144{
 145        struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec);
 146        u16 *cache = codec->reg_cache;
 147
 148        if (reg > AC97_STAC_PAGE0) {
 149                stac9766_ac97_write(codec, AC97_INT_PAGING, 0);
 150                soc_ac97_ops->write(ac97, reg, val);
 151                stac9766_ac97_write(codec, AC97_INT_PAGING, 1);
 152                return 0;
 153        }
 154        if (reg / 2 >= ARRAY_SIZE(stac9766_reg))
 155                return -EIO;
 156
 157        soc_ac97_ops->write(ac97, reg, val);
 158        cache[reg / 2] = val;
 159        return 0;
 160}
 161
 162static unsigned int stac9766_ac97_read(struct snd_soc_codec *codec,
 163                                       unsigned int reg)
 164{
 165        struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec);
 166        u16 val = 0, *cache = codec->reg_cache;
 167
 168        if (reg > AC97_STAC_PAGE0) {
 169                stac9766_ac97_write(codec, AC97_INT_PAGING, 0);
 170                val = soc_ac97_ops->read(ac97, reg - AC97_STAC_PAGE0);
 171                stac9766_ac97_write(codec, AC97_INT_PAGING, 1);
 172                return val;
 173        }
 174        if (reg / 2 >= ARRAY_SIZE(stac9766_reg))
 175                return -EIO;
 176
 177        if (reg == AC97_RESET || reg == AC97_GPIO_STATUS ||
 178                reg == AC97_INT_PAGING || reg == AC97_VENDOR_ID1 ||
 179                reg == AC97_VENDOR_ID2) {
 180
 181                val = soc_ac97_ops->read(ac97, reg);
 182                return val;
 183        }
 184        return cache[reg / 2];
 185}
 186
 187static int ac97_analog_prepare(struct snd_pcm_substream *substream,
 188                               struct snd_soc_dai *dai)
 189{
 190        struct snd_soc_codec *codec = dai->codec;
 191        struct snd_pcm_runtime *runtime = substream->runtime;
 192        unsigned short reg, vra;
 193
 194        vra = stac9766_ac97_read(codec, AC97_EXTENDED_STATUS);
 195
 196        vra |= 0x1; /* enable variable rate audio */
 197        vra &= ~0x4; /* disable SPDIF output */
 198
 199        stac9766_ac97_write(codec, AC97_EXTENDED_STATUS, vra);
 200
 201        if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
 202                reg = AC97_PCM_FRONT_DAC_RATE;
 203        else
 204                reg = AC97_PCM_LR_ADC_RATE;
 205
 206        return stac9766_ac97_write(codec, reg, runtime->rate);
 207}
 208
 209static int ac97_digital_prepare(struct snd_pcm_substream *substream,
 210                                struct snd_soc_dai *dai)
 211{
 212        struct snd_soc_codec *codec = dai->codec;
 213        struct snd_pcm_runtime *runtime = substream->runtime;
 214        unsigned short reg, vra;
 215
 216        stac9766_ac97_write(codec, AC97_SPDIF, 0x2002);
 217
 218        vra = stac9766_ac97_read(codec, AC97_EXTENDED_STATUS);
 219        vra |= 0x5; /* Enable VRA and SPDIF out */
 220
 221        stac9766_ac97_write(codec, AC97_EXTENDED_STATUS, vra);
 222
 223        reg = AC97_PCM_FRONT_DAC_RATE;
 224
 225        return stac9766_ac97_write(codec, reg, runtime->rate);
 226}
 227
 228static int stac9766_set_bias_level(struct snd_soc_codec *codec,
 229                                   enum snd_soc_bias_level level)
 230{
 231        switch (level) {
 232        case SND_SOC_BIAS_ON: /* full On */
 233        case SND_SOC_BIAS_PREPARE: /* partial On */
 234        case SND_SOC_BIAS_STANDBY: /* Off, with power */
 235                stac9766_ac97_write(codec, AC97_POWERDOWN, 0x0000);
 236                break;
 237        case SND_SOC_BIAS_OFF: /* Off, without power */
 238                /* disable everything including AC link */
 239                stac9766_ac97_write(codec, AC97_POWERDOWN, 0xffff);
 240                break;
 241        }
 242        return 0;
 243}
 244
 245static int stac9766_codec_resume(struct snd_soc_codec *codec)
 246{
 247        struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec);
 248
 249        return snd_ac97_reset(ac97, true, STAC9766_VENDOR_ID,
 250                STAC9766_VENDOR_ID_MASK);
 251}
 252
 253static const struct snd_soc_dai_ops stac9766_dai_ops_analog = {
 254        .prepare = ac97_analog_prepare,
 255};
 256
 257static const struct snd_soc_dai_ops stac9766_dai_ops_digital = {
 258        .prepare = ac97_digital_prepare,
 259};
 260
 261static struct snd_soc_dai_driver stac9766_dai[] = {
 262{
 263        .name = "stac9766-hifi-analog",
 264
 265        /* stream cababilities */
 266        .playback = {
 267                .stream_name = "stac9766 analog",
 268                .channels_min = 1,
 269                .channels_max = 2,
 270                .rates = SNDRV_PCM_RATE_8000_48000,
 271                .formats = SND_SOC_STD_AC97_FMTS,
 272        },
 273        .capture = {
 274                .stream_name = "stac9766 analog",
 275                .channels_min = 1,
 276                .channels_max = 2,
 277                .rates = SNDRV_PCM_RATE_8000_48000,
 278                .formats = SND_SOC_STD_AC97_FMTS,
 279        },
 280        /* alsa ops */
 281        .ops = &stac9766_dai_ops_analog,
 282},
 283{
 284        .name = "stac9766-hifi-IEC958",
 285
 286        /* stream cababilities */
 287        .playback = {
 288                .stream_name = "stac9766 IEC958",
 289                .channels_min = 1,
 290                .channels_max = 2,
 291                .rates = SNDRV_PCM_RATE_32000 | \
 292                        SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000,
 293                .formats = SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_BE,
 294        },
 295        /* alsa ops */
 296        .ops = &stac9766_dai_ops_digital,
 297}
 298};
 299
 300static int stac9766_codec_probe(struct snd_soc_codec *codec)
 301{
 302        struct snd_ac97 *ac97;
 303
 304        ac97 = snd_soc_new_ac97_codec(codec, STAC9766_VENDOR_ID,
 305                        STAC9766_VENDOR_ID_MASK);
 306        if (IS_ERR(ac97))
 307                return PTR_ERR(ac97);
 308
 309        snd_soc_codec_set_drvdata(codec, ac97);
 310
 311        return 0;
 312}
 313
 314static int stac9766_codec_remove(struct snd_soc_codec *codec)
 315{
 316        struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec);
 317
 318        snd_soc_free_ac97_codec(ac97);
 319        return 0;
 320}
 321
 322static struct snd_soc_codec_driver soc_codec_dev_stac9766 = {
 323        .component_driver = {
 324                .controls               = stac9766_snd_ac97_controls,
 325                .num_controls           = ARRAY_SIZE(stac9766_snd_ac97_controls),
 326        },
 327        .write = stac9766_ac97_write,
 328        .read = stac9766_ac97_read,
 329        .set_bias_level = stac9766_set_bias_level,
 330        .suspend_bias_off = true,
 331        .probe = stac9766_codec_probe,
 332        .remove = stac9766_codec_remove,
 333        .resume = stac9766_codec_resume,
 334        .reg_cache_size = ARRAY_SIZE(stac9766_reg),
 335        .reg_word_size = sizeof(u16),
 336        .reg_cache_step = 2,
 337        .reg_cache_default = stac9766_reg,
 338};
 339
 340static int stac9766_probe(struct platform_device *pdev)
 341{
 342        return snd_soc_register_codec(&pdev->dev,
 343                        &soc_codec_dev_stac9766, stac9766_dai, ARRAY_SIZE(stac9766_dai));
 344}
 345
 346static int stac9766_remove(struct platform_device *pdev)
 347{
 348        snd_soc_unregister_codec(&pdev->dev);
 349        return 0;
 350}
 351
 352static struct platform_driver stac9766_codec_driver = {
 353        .driver = {
 354                        .name = "stac9766-codec",
 355        },
 356
 357        .probe = stac9766_probe,
 358        .remove = stac9766_remove,
 359};
 360
 361module_platform_driver(stac9766_codec_driver);
 362
 363MODULE_DESCRIPTION("ASoC stac9766 driver");
 364MODULE_AUTHOR("Jon Smirl <jonsmirl@gmail.com>");
 365MODULE_LICENSE("GPL");
 366