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 #include "stac9766.h"
  30
  31 #define STAC9766_VENDOR_ID 0x83847666
  32 #define STAC9766_VENDOR_ID_MASK 0xffffffff
  33
  34 /*
  35  * STAC9766 register cache
  36  */
  37 static 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
  56 static const char *stac9766_record_mux[] = {"Mic", "CD", "Video", "AUX",
  57                         "Line", "Stereo Mix", "Mono Mix", "Phone"};
  58 static const char *stac9766_mono_mux[] = {"Mix", "Mic"};
  59 static const char *stac9766_mic_mux[] = {"Mic1", "Mic2"};
  60 static const char *stac9766_SPDIF_mux[] = {"PCM", "ADC Record"};
  61 static const char *stac9766_popbypass_mux[] = {"Normal", "Bypass Mixer"};
  62 static const char *stac9766_record_all_mux[] = {"All analog",
  63         "Analog plus DAC"};
  64 static const char *stac9766_boost1[] = {"0dB", "10dB"};
  65 static const char *stac9766_boost2[] = {"0dB", "20dB"};
  66 static const char *stac9766_stereo_mic[] = {"Off", "On"};
  67
  68 static SOC_ENUM_DOUBLE_DECL(stac9766_record_enum,
  69                             AC97_REC_SEL, 8, 0, stac9766_record_mux);
  70 static SOC_ENUM_SINGLE_DECL(stac9766_mono_enum,
  71                             AC97_GENERAL_PURPOSE, 9, stac9766_mono_mux);
  72 static SOC_ENUM_SINGLE_DECL(stac9766_mic_enum,
  73                             AC97_GENERAL_PURPOSE, 8, stac9766_mic_mux);
  74 static SOC_ENUM_SINGLE_DECL(stac9766_SPDIF_enum,
  75                             AC97_STAC_DA_CONTROL, 1, stac9766_SPDIF_mux);
  76 static SOC_ENUM_SINGLE_DECL(stac9766_popbypass_enum,
  77                             AC97_GENERAL_PURPOSE, 15, stac9766_popbypass_mux);
  78 static SOC_ENUM_SINGLE_DECL(stac9766_record_all_enum,
  79                             AC97_STAC_ANALOG_SPECIAL, 12,
  80                             stac9766_record_all_mux);
  81 static SOC_ENUM_SINGLE_DECL(stac9766_boost1_enum,
  82                             AC97_MIC, 6, stac9766_boost1); /* 0/10dB */
  83 static SOC_ENUM_SINGLE_DECL(stac9766_boost2_enum,
  84                             AC97_STAC_ANALOG_SPECIAL, 2, stac9766_boost2); /* 0/20dB */
  85 static SOC_ENUM_SINGLE_DECL(stac9766_stereo_mic_enum,
  86                             AC97_STAC_STEREO_MIC, 2, stac9766_stereo_mic);
  87
  88 static const DECLARE_TLV_DB_LINEAR(master_tlv, -4600, 0);
  89 static const DECLARE_TLV_DB_LINEAR(record_tlv, 0, 2250);
  90 static const DECLARE_TLV_DB_LINEAR(beep_tlv, -4500, 0);
  91 static const DECLARE_TLV_DB_LINEAR(mix_tlv, -3450, 1200);
  92
  93 static 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
 142 static 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
 162 static 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
 187 static 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
 209 static 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
 228 static 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
 245 static 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
 253 static const struct snd_soc_dai_ops stac9766_dai_ops_analog = {
 254         .prepare = ac97_analog_prepare,
 255 };
 256
 257 static const struct snd_soc_dai_ops stac9766_dai_ops_digital = {
 258         .prepare = ac97_digital_prepare,
 259 };
 260
 261 static 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
 300 static 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
 314 static 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
 322 static struct snd_soc_codec_driver soc_codec_dev_stac9766 = {
 323         .controls = stac9766_snd_ac97_controls,
 324         .num_controls = ARRAY_SIZE(stac9766_snd_ac97_controls),
 325         .write = stac9766_ac97_write,
 326         .read = stac9766_ac97_read,
 327         .set_bias_level = stac9766_set_bias_level,
 328         .suspend_bias_off = true,
 329         .probe = stac9766_codec_probe,
 330         .remove = stac9766_codec_remove,
 331         .resume = stac9766_codec_resume,
 332         .reg_cache_size = ARRAY_SIZE(stac9766_reg),
 333         .reg_word_size = sizeof(u16),
 334         .reg_cache_step = 2,
 335         .reg_cache_default = stac9766_reg,
 336 };
 337
 338 static int stac9766_probe(struct platform_device *pdev)
 339 {
 340         return snd_soc_register_codec(&pdev->dev,
 341                         &soc_codec_dev_stac9766, stac9766_dai, ARRAY_SIZE(stac9766_dai));
 342 }
 343
 344 static int stac9766_remove(struct platform_device *pdev)
 345 {
 346         snd_soc_unregister_codec(&pdev->dev);
 347         return 0;
 348 }
 349
 350 static struct platform_driver stac9766_codec_driver = {
 351         .driver = {
 352                         .name = "stac9766-codec",
 353         },
 354
 355         .probe = stac9766_probe,
 356         .remove = stac9766_remove,
 357 };
 358
 359 module_platform_driver(stac9766_codec_driver);
 360
 361 MODULE_DESCRIPTION("ASoC stac9766 driver");
 362 MODULE_AUTHOR("Jon Smirl <jonsmirl@gmail.com>");
 363 MODULE_LICENSE("GPL");