sound/soc/codecs/stac9766.c

   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 <linux/regmap.h>
  22 #include <sound/core.h>
  23 #include <sound/pcm.h>
  24 #include <sound/ac97_codec.h>
  25 #include <sound/initval.h>
  26 #include <sound/pcm_params.h>
  27 #include <sound/soc.h>
  28 #include <sound/tlv.h>
  29
  30 #define STAC9766_VENDOR_ID 0x83847666
  31 #define STAC9766_VENDOR_ID_MASK 0xffffffff
  32
  33 #define AC97_STAC_DA_CONTROL 0x6A
  34 #define AC97_STAC_ANALOG_SPECIAL 0x6E
  35 #define AC97_STAC_STEREO_MIC 0x78
  36
  37 static const struct reg_default stac9766_reg_defaults[] = {
  38         { 0x02, 0x8000 },
  39         { 0x04, 0x8000 },
  40         { 0x06, 0x8000 },
  41         { 0x0a, 0x0000 },
  42         { 0x0c, 0x8008 },
  43         { 0x0e, 0x8008 },
  44         { 0x10, 0x8808 },
  45         { 0x12, 0x8808 },
  46         { 0x14, 0x8808 },
  47         { 0x16, 0x8808 },
  48         { 0x18, 0x8808 },
  49         { 0x1a, 0x0000 },
  50         { 0x1c, 0x8000 },
  51         { 0x20, 0x0000 },
  52         { 0x22, 0x0000 },
  53         { 0x28, 0x0a05 },
  54         { 0x2c, 0xbb80 },
  55         { 0x32, 0xbb80 },
  56         { 0x3a, 0x2000 },
  57         { 0x3e, 0x0100 },
  58         { 0x4c, 0x0300 },
  59         { 0x4e, 0xffff },
  60         { 0x50, 0x0000 },
  61         { 0x52, 0x0000 },
  62         { 0x54, 0x0000 },
  63         { 0x6a, 0x0000 },
  64         { 0x6e, 0x1000 },
  65         { 0x72, 0x0000 },
  66         { 0x78, 0x0000 },
  67 };
  68
  69 static const struct regmap_config stac9766_regmap_config = {
  70         .reg_bits = 16,
  71         .reg_stride = 2,
  72         .val_bits = 16,
  73         .max_register = 0x78,
  74         .cache_type = REGCACHE_RBTREE,
  75
  76         .volatile_reg = regmap_ac97_default_volatile,
  77
  78         .reg_defaults = stac9766_reg_defaults,
  79         .num_reg_defaults = ARRAY_SIZE(stac9766_reg_defaults),
  80 };
  81
  82 static const char *stac9766_record_mux[] = {"Mic", "CD", "Video", "AUX",
  83                         "Line", "Stereo Mix", "Mono Mix", "Phone"};
  84 static const char *stac9766_mono_mux[] = {"Mix", "Mic"};
  85 static const char *stac9766_mic_mux[] = {"Mic1", "Mic2"};
  86 static const char *stac9766_SPDIF_mux[] = {"PCM", "ADC Record"};
  87 static const char *stac9766_popbypass_mux[] = {"Normal", "Bypass Mixer"};
  88 static const char *stac9766_record_all_mux[] = {"All analog",
  89         "Analog plus DAC"};
  90 static const char *stac9766_boost1[] = {"0dB", "10dB"};
  91 static const char *stac9766_boost2[] = {"0dB", "20dB"};
  92 static const char *stac9766_stereo_mic[] = {"Off", "On"};
  93
  94 static SOC_ENUM_DOUBLE_DECL(stac9766_record_enum,
  95                             AC97_REC_SEL, 8, 0, stac9766_record_mux);
  96 static SOC_ENUM_SINGLE_DECL(stac9766_mono_enum,
  97                             AC97_GENERAL_PURPOSE, 9, stac9766_mono_mux);
  98 static SOC_ENUM_SINGLE_DECL(stac9766_mic_enum,
  99                             AC97_GENERAL_PURPOSE, 8, stac9766_mic_mux);
 100 static SOC_ENUM_SINGLE_DECL(stac9766_SPDIF_enum,
 101                             AC97_STAC_DA_CONTROL, 1, stac9766_SPDIF_mux);
 102 static SOC_ENUM_SINGLE_DECL(stac9766_popbypass_enum,
 103                             AC97_GENERAL_PURPOSE, 15, stac9766_popbypass_mux);
 104 static SOC_ENUM_SINGLE_DECL(stac9766_record_all_enum,
 105                             AC97_STAC_ANALOG_SPECIAL, 12,
 106                             stac9766_record_all_mux);
 107 static SOC_ENUM_SINGLE_DECL(stac9766_boost1_enum,
 108                             AC97_MIC, 6, stac9766_boost1); /* 0/10dB */
 109 static SOC_ENUM_SINGLE_DECL(stac9766_boost2_enum,
 110                             AC97_STAC_ANALOG_SPECIAL, 2, stac9766_boost2); /* 0/20dB */
 111 static SOC_ENUM_SINGLE_DECL(stac9766_stereo_mic_enum,
 112                             AC97_STAC_STEREO_MIC, 2, stac9766_stereo_mic);
 113
 114 static const SNDRV_CTL_TLVD_DECLARE_DB_SCALE(master_tlv, -4650, 150, 0);
 115 static const SNDRV_CTL_TLVD_DECLARE_DB_SCALE(record_tlv,     0, 150, 0);
 116 static const SNDRV_CTL_TLVD_DECLARE_DB_SCALE(beep_tlv,   -4500, 300, 0);
 117 static const SNDRV_CTL_TLVD_DECLARE_DB_SCALE(mix_tlv,    -3450, 150, 0);
 118
 119 static const struct snd_kcontrol_new stac9766_snd_ac97_controls[] = {
 120         SOC_DOUBLE_TLV("Speaker Volume", AC97_MASTER, 8, 0, 31, 1, master_tlv),
 121         SOC_SINGLE("Speaker Switch", AC97_MASTER, 15, 1, 1),
 122         SOC_DOUBLE_TLV("Headphone Volume", AC97_HEADPHONE, 8, 0, 31, 1,
 123                        master_tlv),
 124         SOC_SINGLE("Headphone Switch", AC97_HEADPHONE, 15, 1, 1),
 125         SOC_SINGLE_TLV("Mono Out Volume", AC97_MASTER_MONO, 0, 31, 1,
 126                        master_tlv),
 127         SOC_SINGLE("Mono Out Switch", AC97_MASTER_MONO, 15, 1, 1),
 128
 129         SOC_DOUBLE_TLV("Record Volume", AC97_REC_GAIN, 8, 0, 15, 0, record_tlv),
 130         SOC_SINGLE("Record Switch", AC97_REC_GAIN, 15, 1, 1),
 131
 132
 133         SOC_SINGLE_TLV("Beep Volume", AC97_PC_BEEP, 1, 15, 1, beep_tlv),
 134         SOC_SINGLE("Beep Switch", AC97_PC_BEEP, 15, 1, 1),
 135         SOC_SINGLE("Beep Frequency", AC97_PC_BEEP, 5, 127, 1),
 136         SOC_SINGLE_TLV("Phone Volume", AC97_PHONE, 0, 31, 1, mix_tlv),
 137         SOC_SINGLE("Phone Switch", AC97_PHONE, 15, 1, 1),
 138
 139         SOC_ENUM("Mic Boost1", stac9766_boost1_enum),
 140         SOC_ENUM("Mic Boost2", stac9766_boost2_enum),
 141         SOC_SINGLE_TLV("Mic Volume", AC97_MIC, 0, 31, 1, mix_tlv),
 142         SOC_SINGLE("Mic Switch", AC97_MIC, 15, 1, 1),
 143         SOC_ENUM("Stereo Mic", stac9766_stereo_mic_enum),
 144
 145         SOC_DOUBLE_TLV("Line Volume", AC97_LINE, 8, 0, 31, 1, mix_tlv),
 146         SOC_SINGLE("Line Switch", AC97_LINE, 15, 1, 1),
 147         SOC_DOUBLE_TLV("CD Volume", AC97_CD, 8, 0, 31, 1, mix_tlv),
 148         SOC_SINGLE("CD Switch", AC97_CD, 15, 1, 1),
 149         SOC_DOUBLE_TLV("AUX Volume", AC97_AUX, 8, 0, 31, 1, mix_tlv),
 150         SOC_SINGLE("AUX Switch", AC97_AUX, 15, 1, 1),
 151         SOC_DOUBLE_TLV("Video Volume", AC97_VIDEO, 8, 0, 31, 1, mix_tlv),
 152         SOC_SINGLE("Video Switch", AC97_VIDEO, 15, 1, 1),
 153
 154         SOC_DOUBLE_TLV("DAC Volume", AC97_PCM, 8, 0, 31, 1, mix_tlv),
 155         SOC_SINGLE("DAC Switch", AC97_PCM, 15, 1, 1),
 156         SOC_SINGLE("Loopback Test Switch", AC97_GENERAL_PURPOSE, 7, 1, 0),
 157         SOC_SINGLE("3D Volume", AC97_3D_CONTROL, 3, 2, 1),
 158         SOC_SINGLE("3D Switch", AC97_GENERAL_PURPOSE, 13, 1, 0),
 159
 160         SOC_ENUM("SPDIF Mux", stac9766_SPDIF_enum),
 161         SOC_ENUM("Mic1/2 Mux", stac9766_mic_enum),
 162         SOC_ENUM("Record All Mux", stac9766_record_all_enum),
 163         SOC_ENUM("Record Mux", stac9766_record_enum),
 164         SOC_ENUM("Mono Mux", stac9766_mono_enum),
 165         SOC_ENUM("Pop Bypass Mux", stac9766_popbypass_enum),
 166 };
 167
 168 static int ac97_analog_prepare(struct snd_pcm_substream *substream,
 169                                struct snd_soc_dai *dai)
 170 {
 171         struct snd_soc_codec *codec = dai->codec;
 172         struct snd_pcm_runtime *runtime = substream->runtime;
 173         unsigned short reg;
 174
 175         /* enable variable rate audio, disable SPDIF output */
 176         snd_soc_update_bits(codec, AC97_EXTENDED_STATUS, 0x5, 0x1);
 177
 178         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
 179                 reg = AC97_PCM_FRONT_DAC_RATE;
 180         else
 181                 reg = AC97_PCM_LR_ADC_RATE;
 182
 183         return snd_soc_write(codec, reg, runtime->rate);
 184 }
 185
 186 static int ac97_digital_prepare(struct snd_pcm_substream *substream,
 187                                 struct snd_soc_dai *dai)
 188 {
 189         struct snd_soc_codec *codec = dai->codec;
 190         struct snd_pcm_runtime *runtime = substream->runtime;
 191         unsigned short reg;
 192
 193         snd_soc_write(codec, AC97_SPDIF, 0x2002);
 194
 195         /* Enable VRA and SPDIF out */
 196         snd_soc_update_bits(codec, AC97_EXTENDED_STATUS, 0x5, 0x5);
 197
 198         reg = AC97_PCM_FRONT_DAC_RATE;
 199
 200         return snd_soc_write(codec, reg, runtime->rate);
 201 }
 202
 203 static int stac9766_set_bias_level(struct snd_soc_codec *codec,
 204                                    enum snd_soc_bias_level level)
 205 {
 206         switch (level) {
 207         case SND_SOC_BIAS_ON: /* full On */
 208         case SND_SOC_BIAS_PREPARE: /* partial On */
 209         case SND_SOC_BIAS_STANDBY: /* Off, with power */
 210                 snd_soc_write(codec, AC97_POWERDOWN, 0x0000);
 211                 break;
 212         case SND_SOC_BIAS_OFF: /* Off, without power */
 213                 /* disable everything including AC link */
 214                 snd_soc_write(codec, AC97_POWERDOWN, 0xffff);
 215                 break;
 216         }
 217         return 0;
 218 }
 219
 220 static int stac9766_codec_resume(struct snd_soc_codec *codec)
 221 {
 222         struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec);
 223
 224         return snd_ac97_reset(ac97, true, STAC9766_VENDOR_ID,
 225                 STAC9766_VENDOR_ID_MASK);
 226 }
 227
 228 static const struct snd_soc_dai_ops stac9766_dai_ops_analog = {
 229         .prepare = ac97_analog_prepare,
 230 };
 231
 232 static const struct snd_soc_dai_ops stac9766_dai_ops_digital = {
 233         .prepare = ac97_digital_prepare,
 234 };
 235
 236 static struct snd_soc_dai_driver stac9766_dai[] = {
 237 {
 238         .name = "stac9766-hifi-analog",
 239
 240         /* stream cababilities */
 241         .playback = {
 242                 .stream_name = "stac9766 analog",
 243                 .channels_min = 1,
 244                 .channels_max = 2,
 245                 .rates = SNDRV_PCM_RATE_8000_48000,
 246                 .formats = SND_SOC_STD_AC97_FMTS,
 247         },
 248         .capture = {
 249                 .stream_name = "stac9766 analog",
 250                 .channels_min = 1,
 251                 .channels_max = 2,
 252                 .rates = SNDRV_PCM_RATE_8000_48000,
 253                 .formats = SND_SOC_STD_AC97_FMTS,
 254         },
 255         /* alsa ops */
 256         .ops = &stac9766_dai_ops_analog,
 257 },
 258 {
 259         .name = "stac9766-hifi-IEC958",
 260
 261         /* stream cababilities */
 262         .playback = {
 263                 .stream_name = "stac9766 IEC958",
 264                 .channels_min = 1,
 265                 .channels_max = 2,
 266                 .rates = SNDRV_PCM_RATE_32000 | \
 267                         SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000,
 268                 .formats = SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_BE,
 269         },
 270         /* alsa ops */
 271         .ops = &stac9766_dai_ops_digital,
 272 }
 273 };
 274
 275 static int stac9766_codec_probe(struct snd_soc_codec *codec)
 276 {
 277         struct snd_ac97 *ac97;
 278         struct regmap *regmap;
 279         int ret;
 280
 281         ac97 = snd_soc_new_ac97_codec(codec, STAC9766_VENDOR_ID,
 282                         STAC9766_VENDOR_ID_MASK);
 283         if (IS_ERR(ac97))
 284                 return PTR_ERR(ac97);
 285
 286         regmap = regmap_init_ac97(ac97, &stac9766_regmap_config);
 287         if (IS_ERR(regmap)) {
 288                 ret = PTR_ERR(regmap);
 289                 goto err_free_ac97;
 290         }
 291
 292         snd_soc_codec_init_regmap(codec, regmap);
 293         snd_soc_codec_set_drvdata(codec, ac97);
 294
 295         return 0;
 296 err_free_ac97:
 297         snd_soc_free_ac97_codec(ac97);
 298         return ret;
 299 }
 300
 301 static int stac9766_codec_remove(struct snd_soc_codec *codec)
 302 {
 303         struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec);
 304
 305         snd_soc_codec_exit_regmap(codec);
 306         snd_soc_free_ac97_codec(ac97);
 307         return 0;
 308 }
 309
 310 static const struct snd_soc_codec_driver soc_codec_dev_stac9766 = {
 311         .component_driver = {
 312                 .controls               = stac9766_snd_ac97_controls,
 313                 .num_controls           = ARRAY_SIZE(stac9766_snd_ac97_controls),
 314         },
 315         .set_bias_level = stac9766_set_bias_level,
 316         .suspend_bias_off = true,
 317         .probe = stac9766_codec_probe,
 318         .remove = stac9766_codec_remove,
 319         .resume = stac9766_codec_resume,
 320 };
 321
 322 static int stac9766_probe(struct platform_device *pdev)
 323 {
 324         return snd_soc_register_codec(&pdev->dev,
 325                         &soc_codec_dev_stac9766, stac9766_dai, ARRAY_SIZE(stac9766_dai));
 326 }
 327
 328 static int stac9766_remove(struct platform_device *pdev)
 329 {
 330         snd_soc_unregister_codec(&pdev->dev);
 331         return 0;
 332 }
 333
 334 static struct platform_driver stac9766_codec_driver = {
 335         .driver = {
 336                         .name = "stac9766-codec",
 337         },
 338
 339         .probe = stac9766_probe,
 340         .remove = stac9766_remove,
 341 };
 342
 343 module_platform_driver(stac9766_codec_driver);
 344
 345 MODULE_DESCRIPTION("ASoC stac9766 driver");
 346 MODULE_AUTHOR("Jon Smirl <jonsmirl@gmail.com>");
 347 MODULE_LICENSE("GPL");