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 <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 #define STAC9766_VENDOR_ID 0x83847666
  30 #define STAC9766_VENDOR_ID_MASK 0xffffffff
  31
  32 #define AC97_STAC_DA_CONTROL 0x6A
  33 #define AC97_STAC_ANALOG_SPECIAL 0x6E
  34 #define AC97_STAC_STEREO_MIC 0x78
  35
  36 /*
  37  * STAC9766 register cache
  38  */
  39 static const u16 stac9766_reg[] = {
  40         0x6A90, 0x8000, 0x8000, 0x8000, /* 6 */
  41         0x0000, 0x0000, 0x8008, 0x8008, /* e */
  42         0x8808, 0x8808, 0x8808, 0x8808, /* 16 */
  43         0x8808, 0x0000, 0x8000, 0x0000, /* 1e */
  44         0x0000, 0x0000, 0x0000, 0x000f, /* 26 */
  45         0x0a05, 0x0400, 0xbb80, 0x0000, /* 2e */
  46         0x0000, 0xbb80, 0x0000, 0x0000, /* 36 */
  47         0x0000, 0x2000, 0x0000, 0x0100, /* 3e */
  48         0x0000, 0x0000, 0x0080, 0x0000, /* 46 */
  49         0x0000, 0x0000, 0x0003, 0xffff, /* 4e */
  50         0x0000, 0x0000, 0x0000, 0x0000, /* 56 */
  51         0x4000, 0x0000, 0x0000, 0x0000, /* 5e */
  52         0x1201, 0x0000, 0x0000, 0x0000, /* 66 */
  53         0x0000, 0x0000, 0x0000, 0x1000, /* 6e */
  54         0x0000, 0x0000, 0x0000, 0x0006, /* 76 */
  55         0x0000, 0x0000, 0x0000, 0x0000, /* 7e */
  56 };
  57
  58 static const char *stac9766_record_mux[] = {"Mic", "CD", "Video", "AUX",
  59                         "Line", "Stereo Mix", "Mono Mix", "Phone"};
  60 static const char *stac9766_mono_mux[] = {"Mix", "Mic"};
  61 static const char *stac9766_mic_mux[] = {"Mic1", "Mic2"};
  62 static const char *stac9766_SPDIF_mux[] = {"PCM", "ADC Record"};
  63 static const char *stac9766_popbypass_mux[] = {"Normal", "Bypass Mixer"};
  64 static const char *stac9766_record_all_mux[] = {"All analog",
  65         "Analog plus DAC"};
  66 static const char *stac9766_boost1[] = {"0dB", "10dB"};
  67 static const char *stac9766_boost2[] = {"0dB", "20dB"};
  68 static const char *stac9766_stereo_mic[] = {"Off", "On"};
  69
  70 static SOC_ENUM_DOUBLE_DECL(stac9766_record_enum,
  71                             AC97_REC_SEL, 8, 0, stac9766_record_mux);
  72 static SOC_ENUM_SINGLE_DECL(stac9766_mono_enum,
  73                             AC97_GENERAL_PURPOSE, 9, stac9766_mono_mux);
  74 static SOC_ENUM_SINGLE_DECL(stac9766_mic_enum,
  75                             AC97_GENERAL_PURPOSE, 8, stac9766_mic_mux);
  76 static SOC_ENUM_SINGLE_DECL(stac9766_SPDIF_enum,
  77                             AC97_STAC_DA_CONTROL, 1, stac9766_SPDIF_mux);
  78 static SOC_ENUM_SINGLE_DECL(stac9766_popbypass_enum,
  79                             AC97_GENERAL_PURPOSE, 15, stac9766_popbypass_mux);
  80 static SOC_ENUM_SINGLE_DECL(stac9766_record_all_enum,
  81                             AC97_STAC_ANALOG_SPECIAL, 12,
  82                             stac9766_record_all_mux);
  83 static SOC_ENUM_SINGLE_DECL(stac9766_boost1_enum,
  84                             AC97_MIC, 6, stac9766_boost1); /* 0/10dB */
  85 static SOC_ENUM_SINGLE_DECL(stac9766_boost2_enum,
  86                             AC97_STAC_ANALOG_SPECIAL, 2, stac9766_boost2); /* 0/20dB */
  87 static SOC_ENUM_SINGLE_DECL(stac9766_stereo_mic_enum,
  88                             AC97_STAC_STEREO_MIC, 2, stac9766_stereo_mic);
  89
  90 static const SNDRV_CTL_TLVD_DECLARE_DB_SCALE(master_tlv, -4650, 150, 0);
  91 static const SNDRV_CTL_TLVD_DECLARE_DB_SCALE(record_tlv,     0, 150, 0);
  92 static const SNDRV_CTL_TLVD_DECLARE_DB_SCALE(beep_tlv,   -4500, 300, 0);
  93 static const SNDRV_CTL_TLVD_DECLARE_DB_SCALE(mix_tlv,    -3450, 150, 0);
  94
  95 static const struct snd_kcontrol_new stac9766_snd_ac97_controls[] = {
  96         SOC_DOUBLE_TLV("Speaker Volume", AC97_MASTER, 8, 0, 31, 1, master_tlv),
  97         SOC_SINGLE("Speaker Switch", AC97_MASTER, 15, 1, 1),
  98         SOC_DOUBLE_TLV("Headphone Volume", AC97_HEADPHONE, 8, 0, 31, 1,
  99                        master_tlv),
 100         SOC_SINGLE("Headphone Switch", AC97_HEADPHONE, 15, 1, 1),
 101         SOC_SINGLE_TLV("Mono Out Volume", AC97_MASTER_MONO, 0, 31, 1,
 102                        master_tlv),
 103         SOC_SINGLE("Mono Out Switch", AC97_MASTER_MONO, 15, 1, 1),
 104
 105         SOC_DOUBLE_TLV("Record Volume", AC97_REC_GAIN, 8, 0, 15, 0, record_tlv),
 106         SOC_SINGLE("Record Switch", AC97_REC_GAIN, 15, 1, 1),
 107
 108
 109         SOC_SINGLE_TLV("Beep Volume", AC97_PC_BEEP, 1, 15, 1, beep_tlv),
 110         SOC_SINGLE("Beep Switch", AC97_PC_BEEP, 15, 1, 1),
 111         SOC_SINGLE("Beep Frequency", AC97_PC_BEEP, 5, 127, 1),
 112         SOC_SINGLE_TLV("Phone Volume", AC97_PHONE, 0, 31, 1, mix_tlv),
 113         SOC_SINGLE("Phone Switch", AC97_PHONE, 15, 1, 1),
 114
 115         SOC_ENUM("Mic Boost1", stac9766_boost1_enum),
 116         SOC_ENUM("Mic Boost2", stac9766_boost2_enum),
 117         SOC_SINGLE_TLV("Mic Volume", AC97_MIC, 0, 31, 1, mix_tlv),
 118         SOC_SINGLE("Mic Switch", AC97_MIC, 15, 1, 1),
 119         SOC_ENUM("Stereo Mic", stac9766_stereo_mic_enum),
 120
 121         SOC_DOUBLE_TLV("Line Volume", AC97_LINE, 8, 0, 31, 1, mix_tlv),
 122         SOC_SINGLE("Line Switch", AC97_LINE, 15, 1, 1),
 123         SOC_DOUBLE_TLV("CD Volume", AC97_CD, 8, 0, 31, 1, mix_tlv),
 124         SOC_SINGLE("CD Switch", AC97_CD, 15, 1, 1),
 125         SOC_DOUBLE_TLV("AUX Volume", AC97_AUX, 8, 0, 31, 1, mix_tlv),
 126         SOC_SINGLE("AUX Switch", AC97_AUX, 15, 1, 1),
 127         SOC_DOUBLE_TLV("Video Volume", AC97_VIDEO, 8, 0, 31, 1, mix_tlv),
 128         SOC_SINGLE("Video Switch", AC97_VIDEO, 15, 1, 1),
 129
 130         SOC_DOUBLE_TLV("DAC Volume", AC97_PCM, 8, 0, 31, 1, mix_tlv),
 131         SOC_SINGLE("DAC Switch", AC97_PCM, 15, 1, 1),
 132         SOC_SINGLE("Loopback Test Switch", AC97_GENERAL_PURPOSE, 7, 1, 0),
 133         SOC_SINGLE("3D Volume", AC97_3D_CONTROL, 3, 2, 1),
 134         SOC_SINGLE("3D Switch", AC97_GENERAL_PURPOSE, 13, 1, 0),
 135
 136         SOC_ENUM("SPDIF Mux", stac9766_SPDIF_enum),
 137         SOC_ENUM("Mic1/2 Mux", stac9766_mic_enum),
 138         SOC_ENUM("Record All Mux", stac9766_record_all_enum),
 139         SOC_ENUM("Record Mux", stac9766_record_enum),
 140         SOC_ENUM("Mono Mux", stac9766_mono_enum),
 141         SOC_ENUM("Pop Bypass Mux", stac9766_popbypass_enum),
 142 };
 143
 144 static int stac9766_ac97_write(struct snd_soc_codec *codec, unsigned int reg,
 145                                unsigned int val)
 146 {
 147         struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec);
 148         u16 *cache = codec->reg_cache;
 149
 150         if (reg / 2 >= ARRAY_SIZE(stac9766_reg))
 151                 return -EIO;
 152
 153         soc_ac97_ops->write(ac97, reg, val);
 154         cache[reg / 2] = val;
 155         return 0;
 156 }
 157
 158 static unsigned int stac9766_ac97_read(struct snd_soc_codec *codec,
 159                                        unsigned int reg)
 160 {
 161         struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec);
 162         u16 val = 0, *cache = codec->reg_cache;
 163
 164         if (reg / 2 >= ARRAY_SIZE(stac9766_reg))
 165                 return -EIO;
 166
 167         if (reg == AC97_RESET || reg == AC97_GPIO_STATUS ||
 168                 reg == AC97_INT_PAGING || reg == AC97_VENDOR_ID1 ||
 169                 reg == AC97_VENDOR_ID2) {
 170
 171                 val = soc_ac97_ops->read(ac97, reg);
 172                 return val;
 173         }
 174         return cache[reg / 2];
 175 }
 176
 177 static int ac97_analog_prepare(struct snd_pcm_substream *substream,
 178                                struct snd_soc_dai *dai)
 179 {
 180         struct snd_soc_codec *codec = dai->codec;
 181         struct snd_pcm_runtime *runtime = substream->runtime;
 182         unsigned short reg, vra;
 183
 184         vra = stac9766_ac97_read(codec, AC97_EXTENDED_STATUS);
 185
 186         vra |= 0x1; /* enable variable rate audio */
 187         vra &= ~0x4; /* disable SPDIF output */
 188
 189         stac9766_ac97_write(codec, AC97_EXTENDED_STATUS, vra);
 190
 191         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
 192                 reg = AC97_PCM_FRONT_DAC_RATE;
 193         else
 194                 reg = AC97_PCM_LR_ADC_RATE;
 195
 196         return stac9766_ac97_write(codec, reg, runtime->rate);
 197 }
 198
 199 static int ac97_digital_prepare(struct snd_pcm_substream *substream,
 200                                 struct snd_soc_dai *dai)
 201 {
 202         struct snd_soc_codec *codec = dai->codec;
 203         struct snd_pcm_runtime *runtime = substream->runtime;
 204         unsigned short reg, vra;
 205
 206         stac9766_ac97_write(codec, AC97_SPDIF, 0x2002);
 207
 208         vra = stac9766_ac97_read(codec, AC97_EXTENDED_STATUS);
 209         vra |= 0x5; /* Enable VRA and SPDIF out */
 210
 211         stac9766_ac97_write(codec, AC97_EXTENDED_STATUS, vra);
 212
 213         reg = AC97_PCM_FRONT_DAC_RATE;
 214
 215         return stac9766_ac97_write(codec, reg, runtime->rate);
 216 }
 217
 218 static int stac9766_set_bias_level(struct snd_soc_codec *codec,
 219                                    enum snd_soc_bias_level level)
 220 {
 221         switch (level) {
 222         case SND_SOC_BIAS_ON: /* full On */
 223         case SND_SOC_BIAS_PREPARE: /* partial On */
 224         case SND_SOC_BIAS_STANDBY: /* Off, with power */
 225                 stac9766_ac97_write(codec, AC97_POWERDOWN, 0x0000);
 226                 break;
 227         case SND_SOC_BIAS_OFF: /* Off, without power */
 228                 /* disable everything including AC link */
 229                 stac9766_ac97_write(codec, AC97_POWERDOWN, 0xffff);
 230                 break;
 231         }
 232         return 0;
 233 }
 234
 235 static int stac9766_codec_resume(struct snd_soc_codec *codec)
 236 {
 237         struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec);
 238
 239         return snd_ac97_reset(ac97, true, STAC9766_VENDOR_ID,
 240                 STAC9766_VENDOR_ID_MASK);
 241 }
 242
 243 static const struct snd_soc_dai_ops stac9766_dai_ops_analog = {
 244         .prepare = ac97_analog_prepare,
 245 };
 246
 247 static const struct snd_soc_dai_ops stac9766_dai_ops_digital = {
 248         .prepare = ac97_digital_prepare,
 249 };
 250
 251 static struct snd_soc_dai_driver stac9766_dai[] = {
 252 {
 253         .name = "stac9766-hifi-analog",
 254
 255         /* stream cababilities */
 256         .playback = {
 257                 .stream_name = "stac9766 analog",
 258                 .channels_min = 1,
 259                 .channels_max = 2,
 260                 .rates = SNDRV_PCM_RATE_8000_48000,
 261                 .formats = SND_SOC_STD_AC97_FMTS,
 262         },
 263         .capture = {
 264                 .stream_name = "stac9766 analog",
 265                 .channels_min = 1,
 266                 .channels_max = 2,
 267                 .rates = SNDRV_PCM_RATE_8000_48000,
 268                 .formats = SND_SOC_STD_AC97_FMTS,
 269         },
 270         /* alsa ops */
 271         .ops = &stac9766_dai_ops_analog,
 272 },
 273 {
 274         .name = "stac9766-hifi-IEC958",
 275
 276         /* stream cababilities */
 277         .playback = {
 278                 .stream_name = "stac9766 IEC958",
 279                 .channels_min = 1,
 280                 .channels_max = 2,
 281                 .rates = SNDRV_PCM_RATE_32000 | \
 282                         SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000,
 283                 .formats = SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_BE,
 284         },
 285         /* alsa ops */
 286         .ops = &stac9766_dai_ops_digital,
 287 }
 288 };
 289
 290 static int stac9766_codec_probe(struct snd_soc_codec *codec)
 291 {
 292         struct snd_ac97 *ac97;
 293
 294         ac97 = snd_soc_new_ac97_codec(codec, STAC9766_VENDOR_ID,
 295                         STAC9766_VENDOR_ID_MASK);
 296         if (IS_ERR(ac97))
 297                 return PTR_ERR(ac97);
 298
 299         snd_soc_codec_set_drvdata(codec, ac97);
 300
 301         return 0;
 302 }
 303
 304 static int stac9766_codec_remove(struct snd_soc_codec *codec)
 305 {
 306         struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec);
 307
 308         snd_soc_free_ac97_codec(ac97);
 309         return 0;
 310 }
 311
 312 static struct snd_soc_codec_driver soc_codec_dev_stac9766 = {
 313         .component_driver = {
 314                 .controls               = stac9766_snd_ac97_controls,
 315                 .num_controls           = ARRAY_SIZE(stac9766_snd_ac97_controls),
 316         },
 317         .write = stac9766_ac97_write,
 318         .read = stac9766_ac97_read,
 319         .set_bias_level = stac9766_set_bias_level,
 320         .suspend_bias_off = true,
 321         .probe = stac9766_codec_probe,
 322         .remove = stac9766_codec_remove,
 323         .resume = stac9766_codec_resume,
 324         .reg_cache_size = ARRAY_SIZE(stac9766_reg),
 325         .reg_word_size = sizeof(u16),
 326         .reg_cache_step = 2,
 327         .reg_cache_default = stac9766_reg,
 328 };
 329
 330 static int stac9766_probe(struct platform_device *pdev)
 331 {
 332         return snd_soc_register_codec(&pdev->dev,
 333                         &soc_codec_dev_stac9766, stac9766_dai, ARRAY_SIZE(stac9766_dai));
 334 }
 335
 336 static int stac9766_remove(struct platform_device *pdev)
 337 {
 338         snd_soc_unregister_codec(&pdev->dev);
 339         return 0;
 340 }
 341
 342 static struct platform_driver stac9766_codec_driver = {
 343         .driver = {
 344                         .name = "stac9766-codec",
 345         },
 346
 347         .probe = stac9766_probe,
 348         .remove = stac9766_remove,
 349 };
 350
 351 module_platform_driver(stac9766_codec_driver);
 352
 353 MODULE_DESCRIPTION("ASoC stac9766 driver");
 354 MODULE_AUTHOR("Jon Smirl <jonsmirl@gmail.com>");
 355 MODULE_LICENSE("GPL");