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 /*
  32  * STAC9766 register cache
  33  */
  34 static const u16 stac9766_reg[] = {
  35         0x6A90, 0x8000, 0x8000, 0x8000, /* 6 */
  36         0x0000, 0x0000, 0x8008, 0x8008, /* e */
  37         0x8808, 0x8808, 0x8808, 0x8808, /* 16 */
  38         0x8808, 0x0000, 0x8000, 0x0000, /* 1e */
  39         0x0000, 0x0000, 0x0000, 0x000f, /* 26 */
  40         0x0a05, 0x0400, 0xbb80, 0x0000, /* 2e */
  41         0x0000, 0xbb80, 0x0000, 0x0000, /* 36 */
  42         0x0000, 0x2000, 0x0000, 0x0100, /* 3e */
  43         0x0000, 0x0000, 0x0080, 0x0000, /* 46 */
  44         0x0000, 0x0000, 0x0003, 0xffff, /* 4e */
  45         0x0000, 0x0000, 0x0000, 0x0000, /* 56 */
  46         0x4000, 0x0000, 0x0000, 0x0000, /* 5e */
  47         0x1201, 0xFFFF, 0xFFFF, 0x0000, /* 66 */
  48         0x0000, 0x0000, 0x0000, 0x0000, /* 6e */
  49         0x0000, 0x0000, 0x0000, 0x0006, /* 76 */
  50         0x0000, 0x0000, 0x0000, 0x0000, /* 7e */
  51 };
  52
  53 static const char *stac9766_record_mux[] = {"Mic", "CD", "Video", "AUX",
  54                         "Line", "Stereo Mix", "Mono Mix", "Phone"};
  55 static const char *stac9766_mono_mux[] = {"Mix", "Mic"};
  56 static const char *stac9766_mic_mux[] = {"Mic1", "Mic2"};
  57 static const char *stac9766_SPDIF_mux[] = {"PCM", "ADC Record"};
  58 static const char *stac9766_popbypass_mux[] = {"Normal", "Bypass Mixer"};
  59 static const char *stac9766_record_all_mux[] = {"All analog",
  60         "Analog plus DAC"};
  61 static const char *stac9766_boost1[] = {"0dB", "10dB"};
  62 static const char *stac9766_boost2[] = {"0dB", "20dB"};
  63 static const char *stac9766_stereo_mic[] = {"Off", "On"};
  64
  65 static SOC_ENUM_DOUBLE_DECL(stac9766_record_enum,
  66                             AC97_REC_SEL, 8, 0, stac9766_record_mux);
  67 static SOC_ENUM_SINGLE_DECL(stac9766_mono_enum,
  68                             AC97_GENERAL_PURPOSE, 9, stac9766_mono_mux);
  69 static SOC_ENUM_SINGLE_DECL(stac9766_mic_enum,
  70                             AC97_GENERAL_PURPOSE, 8, stac9766_mic_mux);
  71 static SOC_ENUM_SINGLE_DECL(stac9766_SPDIF_enum,
  72                             AC97_STAC_DA_CONTROL, 1, stac9766_SPDIF_mux);
  73 static SOC_ENUM_SINGLE_DECL(stac9766_popbypass_enum,
  74                             AC97_GENERAL_PURPOSE, 15, stac9766_popbypass_mux);
  75 static SOC_ENUM_SINGLE_DECL(stac9766_record_all_enum,
  76                             AC97_STAC_ANALOG_SPECIAL, 12,
  77                             stac9766_record_all_mux);
  78 static SOC_ENUM_SINGLE_DECL(stac9766_boost1_enum,
  79                             AC97_MIC, 6, stac9766_boost1); /* 0/10dB */
  80 static SOC_ENUM_SINGLE_DECL(stac9766_boost2_enum,
  81                             AC97_STAC_ANALOG_SPECIAL, 2, stac9766_boost2); /* 0/20dB */
  82 static SOC_ENUM_SINGLE_DECL(stac9766_stereo_mic_enum,
  83                             AC97_STAC_STEREO_MIC, 2, stac9766_stereo_mic);
  84
  85 static const DECLARE_TLV_DB_LINEAR(master_tlv, -4600, 0);
  86 static const DECLARE_TLV_DB_LINEAR(record_tlv, 0, 2250);
  87 static const DECLARE_TLV_DB_LINEAR(beep_tlv, -4500, 0);
  88 static const DECLARE_TLV_DB_LINEAR(mix_tlv, -3450, 1200);
  89
  90 static const struct snd_kcontrol_new stac9766_snd_ac97_controls[] = {
  91         SOC_DOUBLE_TLV("Speaker Volume", AC97_MASTER, 8, 0, 31, 1, master_tlv),
  92         SOC_SINGLE("Speaker Switch", AC97_MASTER, 15, 1, 1),
  93         SOC_DOUBLE_TLV("Headphone Volume", AC97_HEADPHONE, 8, 0, 31, 1,
  94                        master_tlv),
  95         SOC_SINGLE("Headphone Switch", AC97_HEADPHONE, 15, 1, 1),
  96         SOC_SINGLE_TLV("Mono Out Volume", AC97_MASTER_MONO, 0, 31, 1,
  97                        master_tlv),
  98         SOC_SINGLE("Mono Out Switch", AC97_MASTER_MONO, 15, 1, 1),
  99
 100         SOC_DOUBLE_TLV("Record Volume", AC97_REC_GAIN, 8, 0, 15, 0, record_tlv),
 101         SOC_SINGLE("Record Switch", AC97_REC_GAIN, 15, 1, 1),
 102
 103
 104         SOC_SINGLE_TLV("Beep Volume", AC97_PC_BEEP, 1, 15, 1, beep_tlv),
 105         SOC_SINGLE("Beep Switch", AC97_PC_BEEP, 15, 1, 1),
 106         SOC_SINGLE("Beep Frequency", AC97_PC_BEEP, 5, 127, 1),
 107         SOC_SINGLE_TLV("Phone Volume", AC97_PHONE, 0, 31, 1, mix_tlv),
 108         SOC_SINGLE("Phone Switch", AC97_PHONE, 15, 1, 1),
 109
 110         SOC_ENUM("Mic Boost1", stac9766_boost1_enum),
 111         SOC_ENUM("Mic Boost2", stac9766_boost2_enum),
 112         SOC_SINGLE_TLV("Mic Volume", AC97_MIC, 0, 31, 1, mix_tlv),
 113         SOC_SINGLE("Mic Switch", AC97_MIC, 15, 1, 1),
 114         SOC_ENUM("Stereo Mic", stac9766_stereo_mic_enum),
 115
 116         SOC_DOUBLE_TLV("Line Volume", AC97_LINE, 8, 0, 31, 1, mix_tlv),
 117         SOC_SINGLE("Line Switch", AC97_LINE, 15, 1, 1),
 118         SOC_DOUBLE_TLV("CD Volume", AC97_CD, 8, 0, 31, 1, mix_tlv),
 119         SOC_SINGLE("CD Switch", AC97_CD, 15, 1, 1),
 120         SOC_DOUBLE_TLV("AUX Volume", AC97_AUX, 8, 0, 31, 1, mix_tlv),
 121         SOC_SINGLE("AUX Switch", AC97_AUX, 15, 1, 1),
 122         SOC_DOUBLE_TLV("Video Volume", AC97_VIDEO, 8, 0, 31, 1, mix_tlv),
 123         SOC_SINGLE("Video Switch", AC97_VIDEO, 15, 1, 1),
 124
 125         SOC_DOUBLE_TLV("DAC Volume", AC97_PCM, 8, 0, 31, 1, mix_tlv),
 126         SOC_SINGLE("DAC Switch", AC97_PCM, 15, 1, 1),
 127         SOC_SINGLE("Loopback Test Switch", AC97_GENERAL_PURPOSE, 7, 1, 0),
 128         SOC_SINGLE("3D Volume", AC97_3D_CONTROL, 3, 2, 1),
 129         SOC_SINGLE("3D Switch", AC97_GENERAL_PURPOSE, 13, 1, 0),
 130
 131         SOC_ENUM("SPDIF Mux", stac9766_SPDIF_enum),
 132         SOC_ENUM("Mic1/2 Mux", stac9766_mic_enum),
 133         SOC_ENUM("Record All Mux", stac9766_record_all_enum),
 134         SOC_ENUM("Record Mux", stac9766_record_enum),
 135         SOC_ENUM("Mono Mux", stac9766_mono_enum),
 136         SOC_ENUM("Pop Bypass Mux", stac9766_popbypass_enum),
 137 };
 138
 139 static int stac9766_ac97_write(struct snd_soc_codec *codec, unsigned int reg,
 140                                unsigned int val)
 141 {
 142         u16 *cache = codec->reg_cache;
 143
 144         if (reg > AC97_STAC_PAGE0) {
 145                 stac9766_ac97_write(codec, AC97_INT_PAGING, 0);
 146                 soc_ac97_ops->write(codec->ac97, reg, val);
 147                 stac9766_ac97_write(codec, AC97_INT_PAGING, 1);
 148                 return 0;
 149         }
 150         if (reg / 2 >= ARRAY_SIZE(stac9766_reg))
 151                 return -EIO;
 152
 153         soc_ac97_ops->write(codec->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         u16 val = 0, *cache = codec->reg_cache;
 162
 163         if (reg > AC97_STAC_PAGE0) {
 164                 stac9766_ac97_write(codec, AC97_INT_PAGING, 0);
 165                 val = soc_ac97_ops->read(codec->ac97, reg - AC97_STAC_PAGE0);
 166                 stac9766_ac97_write(codec, AC97_INT_PAGING, 1);
 167                 return val;
 168         }
 169         if (reg / 2 >= ARRAY_SIZE(stac9766_reg))
 170                 return -EIO;
 171
 172         if (reg == AC97_RESET || reg == AC97_GPIO_STATUS ||
 173                 reg == AC97_INT_PAGING || reg == AC97_VENDOR_ID1 ||
 174                 reg == AC97_VENDOR_ID2) {
 175
 176                 val = soc_ac97_ops->read(codec->ac97, reg);
 177                 return val;
 178         }
 179         return cache[reg / 2];
 180 }
 181
 182 static int ac97_analog_prepare(struct snd_pcm_substream *substream,
 183                                struct snd_soc_dai *dai)
 184 {
 185         struct snd_soc_codec *codec = dai->codec;
 186         struct snd_pcm_runtime *runtime = substream->runtime;
 187         unsigned short reg, vra;
 188
 189         vra = stac9766_ac97_read(codec, AC97_EXTENDED_STATUS);
 190
 191         vra |= 0x1; /* enable variable rate audio */
 192         vra &= ~0x4; /* disable SPDIF output */
 193
 194         stac9766_ac97_write(codec, AC97_EXTENDED_STATUS, vra);
 195
 196         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
 197                 reg = AC97_PCM_FRONT_DAC_RATE;
 198         else
 199                 reg = AC97_PCM_LR_ADC_RATE;
 200
 201         return stac9766_ac97_write(codec, reg, runtime->rate);
 202 }
 203
 204 static int ac97_digital_prepare(struct snd_pcm_substream *substream,
 205                                 struct snd_soc_dai *dai)
 206 {
 207         struct snd_soc_codec *codec = dai->codec;
 208         struct snd_pcm_runtime *runtime = substream->runtime;
 209         unsigned short reg, vra;
 210
 211         stac9766_ac97_write(codec, AC97_SPDIF, 0x2002);
 212
 213         vra = stac9766_ac97_read(codec, AC97_EXTENDED_STATUS);
 214         vra |= 0x5; /* Enable VRA and SPDIF out */
 215
 216         stac9766_ac97_write(codec, AC97_EXTENDED_STATUS, vra);
 217
 218         reg = AC97_PCM_FRONT_DAC_RATE;
 219
 220         return stac9766_ac97_write(codec, reg, runtime->rate);
 221 }
 222
 223 static int stac9766_set_bias_level(struct snd_soc_codec *codec,
 224                                    enum snd_soc_bias_level level)
 225 {
 226         switch (level) {
 227         case SND_SOC_BIAS_ON: /* full On */
 228         case SND_SOC_BIAS_PREPARE: /* partial On */
 229         case SND_SOC_BIAS_STANDBY: /* Off, with power */
 230                 stac9766_ac97_write(codec, AC97_POWERDOWN, 0x0000);
 231                 break;
 232         case SND_SOC_BIAS_OFF: /* Off, without power */
 233                 /* disable everything including AC link */
 234                 stac9766_ac97_write(codec, AC97_POWERDOWN, 0xffff);
 235                 break;
 236         }
 237         codec->dapm.bias_level = level;
 238         return 0;
 239 }
 240
 241 static int stac9766_reset(struct snd_soc_codec *codec, int try_warm)
 242 {
 243         if (try_warm && soc_ac97_ops->warm_reset) {
 244                 soc_ac97_ops->warm_reset(codec->ac97);
 245                 if (stac9766_ac97_read(codec, 0) == stac9766_reg[0])
 246                         return 1;
 247         }
 248
 249         soc_ac97_ops->reset(codec->ac97);
 250         if (soc_ac97_ops->warm_reset)
 251                 soc_ac97_ops->warm_reset(codec->ac97);
 252         if (stac9766_ac97_read(codec, 0) != stac9766_reg[0])
 253                 return -EIO;
 254         return 0;
 255 }
 256
 257 static int stac9766_codec_suspend(struct snd_soc_codec *codec)
 258 {
 259         stac9766_set_bias_level(codec, SND_SOC_BIAS_OFF);
 260         return 0;
 261 }
 262
 263 static int stac9766_codec_resume(struct snd_soc_codec *codec)
 264 {
 265         u16 id, reset;
 266
 267         reset = 0;
 268         /* give the codec an AC97 warm reset to start the link */
 269 reset:
 270         if (reset > 5) {
 271                 printk(KERN_ERR "stac9766 failed to resume");
 272                 return -EIO;
 273         }
 274         codec->ac97->bus->ops->warm_reset(codec->ac97);
 275         id = soc_ac97_ops->read(codec->ac97, AC97_VENDOR_ID2);
 276         if (id != 0x4c13) {
 277                 stac9766_reset(codec, 0);
 278                 reset++;
 279                 goto reset;
 280         }
 281         stac9766_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
 282
 283         return 0;
 284 }
 285
 286 static const struct snd_soc_dai_ops stac9766_dai_ops_analog = {
 287         .prepare = ac97_analog_prepare,
 288 };
 289
 290 static const struct snd_soc_dai_ops stac9766_dai_ops_digital = {
 291         .prepare = ac97_digital_prepare,
 292 };
 293
 294 static struct snd_soc_dai_driver stac9766_dai[] = {
 295 {
 296         .name = "stac9766-hifi-analog",
 297         .ac97_control = 1,
 298
 299         /* stream cababilities */
 300         .playback = {
 301                 .stream_name = "stac9766 analog",
 302                 .channels_min = 1,
 303                 .channels_max = 2,
 304                 .rates = SNDRV_PCM_RATE_8000_48000,
 305                 .formats = SND_SOC_STD_AC97_FMTS,
 306         },
 307         .capture = {
 308                 .stream_name = "stac9766 analog",
 309                 .channels_min = 1,
 310                 .channels_max = 2,
 311                 .rates = SNDRV_PCM_RATE_8000_48000,
 312                 .formats = SND_SOC_STD_AC97_FMTS,
 313         },
 314         /* alsa ops */
 315         .ops = &stac9766_dai_ops_analog,
 316 },
 317 {
 318         .name = "stac9766-hifi-IEC958",
 319         .ac97_control = 1,
 320
 321         /* stream cababilities */
 322         .playback = {
 323                 .stream_name = "stac9766 IEC958",
 324                 .channels_min = 1,
 325                 .channels_max = 2,
 326                 .rates = SNDRV_PCM_RATE_32000 | \
 327                         SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000,
 328                 .formats = SNDRV_PCM_FORMAT_IEC958_SUBFRAME_BE,
 329         },
 330         /* alsa ops */
 331         .ops = &stac9766_dai_ops_digital,
 332 }
 333 };
 334
 335 static int stac9766_codec_probe(struct snd_soc_codec *codec)
 336 {
 337         int ret = 0;
 338
 339         ret = snd_soc_new_ac97_codec(codec, soc_ac97_ops, 0);
 340         if (ret < 0)
 341                 goto codec_err;
 342
 343         /* do a cold reset for the controller and then try
 344          * a warm reset followed by an optional cold reset for codec */
 345         stac9766_reset(codec, 0);
 346         ret = stac9766_reset(codec, 1);
 347         if (ret < 0) {
 348                 printk(KERN_ERR "Failed to reset STAC9766: AC97 link error\n");
 349                 goto codec_err;
 350         }
 351
 352         stac9766_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
 353
 354         snd_soc_add_codec_controls(codec, stac9766_snd_ac97_controls,
 355                              ARRAY_SIZE(stac9766_snd_ac97_controls));
 356
 357         return 0;
 358
 359 codec_err:
 360         snd_soc_free_ac97_codec(codec);
 361         return ret;
 362 }
 363
 364 static int stac9766_codec_remove(struct snd_soc_codec *codec)
 365 {
 366         snd_soc_free_ac97_codec(codec);
 367         return 0;
 368 }
 369
 370 static struct snd_soc_codec_driver soc_codec_dev_stac9766 = {
 371         .write = stac9766_ac97_write,
 372         .read = stac9766_ac97_read,
 373         .set_bias_level = stac9766_set_bias_level,
 374         .probe = stac9766_codec_probe,
 375         .remove = stac9766_codec_remove,
 376         .suspend = stac9766_codec_suspend,
 377         .resume = stac9766_codec_resume,
 378         .reg_cache_size = ARRAY_SIZE(stac9766_reg),
 379         .reg_word_size = sizeof(u16),
 380         .reg_cache_step = 2,
 381         .reg_cache_default = stac9766_reg,
 382 };
 383
 384 static int stac9766_probe(struct platform_device *pdev)
 385 {
 386         return snd_soc_register_codec(&pdev->dev,
 387                         &soc_codec_dev_stac9766, stac9766_dai, ARRAY_SIZE(stac9766_dai));
 388 }
 389
 390 static int stac9766_remove(struct platform_device *pdev)
 391 {
 392         snd_soc_unregister_codec(&pdev->dev);
 393         return 0;
 394 }
 395
 396 static struct platform_driver stac9766_codec_driver = {
 397         .driver = {
 398                         .name = "stac9766-codec",
 399                         .owner = THIS_MODULE,
 400         },
 401
 402         .probe = stac9766_probe,
 403         .remove = stac9766_remove,
 404 };
 405
 406 module_platform_driver(stac9766_codec_driver);
 407
 408 MODULE_DESCRIPTION("ASoC stac9766 driver");
 409 MODULE_AUTHOR("Jon Smirl <jonsmirl@gmail.com>");
 410 MODULE_LICENSE("GPL");