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_VERSION "0.10"
  32
  33 /*
  34  * STAC9766 register cache
  35  */
  36 static const u16 stac9766_reg[] = {
  37         0x6A90, 0x8000, 0x8000, 0x8000, /* 6 */
  38         0x0000, 0x0000, 0x8008, 0x8008, /* e */
  39         0x8808, 0x8808, 0x8808, 0x8808, /* 16 */
  40         0x8808, 0x0000, 0x8000, 0x0000, /* 1e */
  41         0x0000, 0x0000, 0x0000, 0x000f, /* 26 */
  42         0x0a05, 0x0400, 0xbb80, 0x0000, /* 2e */
  43         0x0000, 0xbb80, 0x0000, 0x0000, /* 36 */
  44         0x0000, 0x2000, 0x0000, 0x0100, /* 3e */
  45         0x0000, 0x0000, 0x0080, 0x0000, /* 46 */
  46         0x0000, 0x0000, 0x0003, 0xffff, /* 4e */
  47         0x0000, 0x0000, 0x0000, 0x0000, /* 56 */
  48         0x4000, 0x0000, 0x0000, 0x0000, /* 5e */
  49         0x1201, 0xFFFF, 0xFFFF, 0x0000, /* 66 */
  50         0x0000, 0x0000, 0x0000, 0x0000, /* 6e */
  51         0x0000, 0x0000, 0x0000, 0x0006, /* 76 */
  52         0x0000, 0x0000, 0x0000, 0x0000, /* 7e */
  53 };
  54
  55 static const char *stac9766_record_mux[] = {"Mic", "CD", "Video", "AUX",
  56                         "Line", "Stereo Mix", "Mono Mix", "Phone"};
  57 static const char *stac9766_mono_mux[] = {"Mix", "Mic"};
  58 static const char *stac9766_mic_mux[] = {"Mic1", "Mic2"};
  59 static const char *stac9766_SPDIF_mux[] = {"PCM", "ADC Record"};
  60 static const char *stac9766_popbypass_mux[] = {"Normal", "Bypass Mixer"};
  61 static const char *stac9766_record_all_mux[] = {"All analog",
  62         "Analog plus DAC"};
  63 static const char *stac9766_boost1[] = {"0dB", "10dB"};
  64 static const char *stac9766_boost2[] = {"0dB", "20dB"};
  65 static const char *stac9766_stereo_mic[] = {"Off", "On"};
  66
  67 static const struct soc_enum stac9766_record_enum =
  68         SOC_ENUM_DOUBLE(AC97_REC_SEL, 8, 0, 8, stac9766_record_mux);
  69 static const struct soc_enum stac9766_mono_enum =
  70         SOC_ENUM_SINGLE(AC97_GENERAL_PURPOSE, 9, 2, stac9766_mono_mux);
  71 static const struct soc_enum stac9766_mic_enum =
  72         SOC_ENUM_SINGLE(AC97_GENERAL_PURPOSE, 8, 2, stac9766_mic_mux);
  73 static const struct soc_enum stac9766_SPDIF_enum =
  74         SOC_ENUM_SINGLE(AC97_STAC_DA_CONTROL, 1, 2, stac9766_SPDIF_mux);
  75 static const struct soc_enum stac9766_popbypass_enum =
  76         SOC_ENUM_SINGLE(AC97_GENERAL_PURPOSE, 15, 2, stac9766_popbypass_mux);
  77 static const struct soc_enum stac9766_record_all_enum =
  78         SOC_ENUM_SINGLE(AC97_STAC_ANALOG_SPECIAL, 12, 2,
  79                         stac9766_record_all_mux);
  80 static const struct soc_enum stac9766_boost1_enum =
  81         SOC_ENUM_SINGLE(AC97_MIC, 6, 2, stac9766_boost1); /* 0/10dB */
  82 static const struct soc_enum stac9766_boost2_enum =
  83         SOC_ENUM_SINGLE(AC97_STAC_ANALOG_SPECIAL, 2, 2, stac9766_boost2); /* 0/20dB */
  84 static const struct soc_enum stac9766_stereo_mic_enum =
  85         SOC_ENUM_SINGLE(AC97_STAC_STEREO_MIC, 2, 1, stac9766_stereo_mic);
  86
  87 static const DECLARE_TLV_DB_LINEAR(master_tlv, -4600, 0);
  88 static const DECLARE_TLV_DB_LINEAR(record_tlv, 0, 2250);
  89 static const DECLARE_TLV_DB_LINEAR(beep_tlv, -4500, 0);
  90 static const DECLARE_TLV_DB_LINEAR(mix_tlv, -3450, 1200);
  91
  92 static const struct snd_kcontrol_new stac9766_snd_ac97_controls[] = {
  93         SOC_DOUBLE_TLV("Speaker Volume", AC97_MASTER, 8, 0, 31, 1, master_tlv),
  94         SOC_SINGLE("Speaker Switch", AC97_MASTER, 15, 1, 1),
  95         SOC_DOUBLE_TLV("Headphone Volume", AC97_HEADPHONE, 8, 0, 31, 1,
  96                        master_tlv),
  97         SOC_SINGLE("Headphone Switch", AC97_HEADPHONE, 15, 1, 1),
  98         SOC_SINGLE_TLV("Mono Out Volume", AC97_MASTER_MONO, 0, 31, 1,
  99                        master_tlv),
 100         SOC_SINGLE("Mono Out Switch", AC97_MASTER_MONO, 15, 1, 1),
 101
 102         SOC_DOUBLE_TLV("Record Volume", AC97_REC_GAIN, 8, 0, 15, 0, record_tlv),
 103         SOC_SINGLE("Record Switch", AC97_REC_GAIN, 15, 1, 1),
 104
 105
 106         SOC_SINGLE_TLV("Beep Volume", AC97_PC_BEEP, 1, 15, 1, beep_tlv),
 107         SOC_SINGLE("Beep Switch", AC97_PC_BEEP, 15, 1, 1),
 108         SOC_SINGLE("Beep Frequency", AC97_PC_BEEP, 5, 127, 1),
 109         SOC_SINGLE_TLV("Phone Volume", AC97_PHONE, 0, 31, 1, mix_tlv),
 110         SOC_SINGLE("Phone Switch", AC97_PHONE, 15, 1, 1),
 111
 112         SOC_ENUM("Mic Boost1", stac9766_boost1_enum),
 113         SOC_ENUM("Mic Boost2", stac9766_boost2_enum),
 114         SOC_SINGLE_TLV("Mic Volume", AC97_MIC, 0, 31, 1, mix_tlv),
 115         SOC_SINGLE("Mic Switch", AC97_MIC, 15, 1, 1),
 116         SOC_ENUM("Stereo Mic", stac9766_stereo_mic_enum),
 117
 118         SOC_DOUBLE_TLV("Line Volume", AC97_LINE, 8, 0, 31, 1, mix_tlv),
 119         SOC_SINGLE("Line Switch", AC97_LINE, 15, 1, 1),
 120         SOC_DOUBLE_TLV("CD Volume", AC97_CD, 8, 0, 31, 1, mix_tlv),
 121         SOC_SINGLE("CD Switch", AC97_CD, 15, 1, 1),
 122         SOC_DOUBLE_TLV("AUX Volume", AC97_AUX, 8, 0, 31, 1, mix_tlv),
 123         SOC_SINGLE("AUX Switch", AC97_AUX, 15, 1, 1),
 124         SOC_DOUBLE_TLV("Video Volume", AC97_VIDEO, 8, 0, 31, 1, mix_tlv),
 125         SOC_SINGLE("Video Switch", AC97_VIDEO, 15, 1, 1),
 126
 127         SOC_DOUBLE_TLV("DAC Volume", AC97_PCM, 8, 0, 31, 1, mix_tlv),
 128         SOC_SINGLE("DAC Switch", AC97_PCM, 15, 1, 1),
 129         SOC_SINGLE("Loopback Test Switch", AC97_GENERAL_PURPOSE, 7, 1, 0),
 130         SOC_SINGLE("3D Volume", AC97_3D_CONTROL, 3, 2, 1),
 131         SOC_SINGLE("3D Switch", AC97_GENERAL_PURPOSE, 13, 1, 0),
 132
 133         SOC_ENUM("SPDIF Mux", stac9766_SPDIF_enum),
 134         SOC_ENUM("Mic1/2 Mux", stac9766_mic_enum),
 135         SOC_ENUM("Record All Mux", stac9766_record_all_enum),
 136         SOC_ENUM("Record Mux", stac9766_record_enum),
 137         SOC_ENUM("Mono Mux", stac9766_mono_enum),
 138         SOC_ENUM("Pop Bypass Mux", stac9766_popbypass_enum),
 139 };
 140
 141 static int stac9766_ac97_write(struct snd_soc_codec *codec, unsigned int reg,
 142                                unsigned int val)
 143 {
 144         u16 *cache = codec->reg_cache;
 145
 146         if (reg > AC97_STAC_PAGE0) {
 147                 stac9766_ac97_write(codec, AC97_INT_PAGING, 0);
 148                 soc_ac97_ops.write(codec->ac97, reg, val);
 149                 stac9766_ac97_write(codec, AC97_INT_PAGING, 1);
 150                 return 0;
 151         }
 152         if (reg / 2 >= ARRAY_SIZE(stac9766_reg))
 153                 return -EIO;
 154
 155         soc_ac97_ops.write(codec->ac97, reg, val);
 156         cache[reg / 2] = val;
 157         return 0;
 158 }
 159
 160 static unsigned int stac9766_ac97_read(struct snd_soc_codec *codec,
 161                                        unsigned int reg)
 162 {
 163         u16 val = 0, *cache = codec->reg_cache;
 164
 165         if (reg > AC97_STAC_PAGE0) {
 166                 stac9766_ac97_write(codec, AC97_INT_PAGING, 0);
 167                 val = soc_ac97_ops.read(codec->ac97, reg - AC97_STAC_PAGE0);
 168                 stac9766_ac97_write(codec, AC97_INT_PAGING, 1);
 169                 return val;
 170         }
 171         if (reg / 2 >= ARRAY_SIZE(stac9766_reg))
 172                 return -EIO;
 173
 174         if (reg == AC97_RESET || reg == AC97_GPIO_STATUS ||
 175                 reg == AC97_INT_PAGING || reg == AC97_VENDOR_ID1 ||
 176                 reg == AC97_VENDOR_ID2) {
 177
 178                 val = soc_ac97_ops.read(codec->ac97, reg);
 179                 return val;
 180         }
 181         return cache[reg / 2];
 182 }
 183
 184 static int ac97_analog_prepare(struct snd_pcm_substream *substream,
 185                                struct snd_soc_dai *dai)
 186 {
 187         struct snd_soc_codec *codec = dai->codec;
 188         struct snd_pcm_runtime *runtime = substream->runtime;
 189         unsigned short reg, vra;
 190
 191         vra = stac9766_ac97_read(codec, AC97_EXTENDED_STATUS);
 192
 193         vra |= 0x1; /* enable variable rate audio */
 194         vra &= ~0x4; /* disable SPDIF output */
 195
 196         stac9766_ac97_write(codec, AC97_EXTENDED_STATUS, vra);
 197
 198         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
 199                 reg = AC97_PCM_FRONT_DAC_RATE;
 200         else
 201                 reg = AC97_PCM_LR_ADC_RATE;
 202
 203         return stac9766_ac97_write(codec, reg, runtime->rate);
 204 }
 205
 206 static int ac97_digital_prepare(struct snd_pcm_substream *substream,
 207                                 struct snd_soc_dai *dai)
 208 {
 209         struct snd_soc_codec *codec = dai->codec;
 210         struct snd_pcm_runtime *runtime = substream->runtime;
 211         unsigned short reg, vra;
 212
 213         stac9766_ac97_write(codec, AC97_SPDIF, 0x2002);
 214
 215         vra = stac9766_ac97_read(codec, AC97_EXTENDED_STATUS);
 216         vra |= 0x5; /* Enable VRA and SPDIF out */
 217
 218         stac9766_ac97_write(codec, AC97_EXTENDED_STATUS, vra);
 219
 220         reg = AC97_PCM_FRONT_DAC_RATE;
 221
 222         return stac9766_ac97_write(codec, reg, runtime->rate);
 223 }
 224
 225 static int stac9766_set_bias_level(struct snd_soc_codec *codec,
 226                                    enum snd_soc_bias_level level)
 227 {
 228         switch (level) {
 229         case SND_SOC_BIAS_ON: /* full On */
 230         case SND_SOC_BIAS_PREPARE: /* partial On */
 231         case SND_SOC_BIAS_STANDBY: /* Off, with power */
 232                 stac9766_ac97_write(codec, AC97_POWERDOWN, 0x0000);
 233                 break;
 234         case SND_SOC_BIAS_OFF: /* Off, without power */
 235                 /* disable everything including AC link */
 236                 stac9766_ac97_write(codec, AC97_POWERDOWN, 0xffff);
 237                 break;
 238         }
 239         codec->dapm.bias_level = level;
 240         return 0;
 241 }
 242
 243 static int stac9766_reset(struct snd_soc_codec *codec, int try_warm)
 244 {
 245         if (try_warm && soc_ac97_ops.warm_reset) {
 246                 soc_ac97_ops.warm_reset(codec->ac97);
 247                 if (stac9766_ac97_read(codec, 0) == stac9766_reg[0])
 248                         return 1;
 249         }
 250
 251         soc_ac97_ops.reset(codec->ac97);
 252         if (soc_ac97_ops.warm_reset)
 253                 soc_ac97_ops.warm_reset(codec->ac97);
 254         if (stac9766_ac97_read(codec, 0) != stac9766_reg[0])
 255                 return -EIO;
 256         return 0;
 257 }
 258
 259 static int stac9766_codec_suspend(struct snd_soc_codec *codec,
 260                                   pm_message_t state)
 261 {
 262         stac9766_set_bias_level(codec, SND_SOC_BIAS_OFF);
 263         return 0;
 264 }
 265
 266 static int stac9766_codec_resume(struct snd_soc_codec *codec)
 267 {
 268         u16 id, reset;
 269
 270         reset = 0;
 271         /* give the codec an AC97 warm reset to start the link */
 272 reset:
 273         if (reset > 5) {
 274                 printk(KERN_ERR "stac9766 failed to resume");
 275                 return -EIO;
 276         }
 277         codec->ac97->bus->ops->warm_reset(codec->ac97);
 278         id = soc_ac97_ops.read(codec->ac97, AC97_VENDOR_ID2);
 279         if (id != 0x4c13) {
 280                 stac9766_reset(codec, 0);
 281                 reset++;
 282                 goto reset;
 283         }
 284         stac9766_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
 285
 286         return 0;
 287 }
 288
 289 static struct snd_soc_dai_ops stac9766_dai_ops_analog = {
 290         .prepare = ac97_analog_prepare,
 291 };
 292
 293 static struct snd_soc_dai_ops stac9766_dai_ops_digital = {
 294         .prepare = ac97_digital_prepare,
 295 };
 296
 297 static struct snd_soc_dai_driver stac9766_dai[] = {
 298 {
 299         .name = "stac9766-hifi-analog",
 300         .ac97_control = 1,
 301
 302         /* stream cababilities */
 303         .playback = {
 304                 .stream_name = "stac9766 analog",
 305                 .channels_min = 1,
 306                 .channels_max = 2,
 307                 .rates = SNDRV_PCM_RATE_8000_48000,
 308                 .formats = SND_SOC_STD_AC97_FMTS,
 309         },
 310         .capture = {
 311                 .stream_name = "stac9766 analog",
 312                 .channels_min = 1,
 313                 .channels_max = 2,
 314                 .rates = SNDRV_PCM_RATE_8000_48000,
 315                 .formats = SND_SOC_STD_AC97_FMTS,
 316         },
 317         /* alsa ops */
 318         .ops = &stac9766_dai_ops_analog,
 319 },
 320 {
 321         .name = "stac9766-hifi-IEC958",
 322         .ac97_control = 1,
 323
 324         /* stream cababilities */
 325         .playback = {
 326                 .stream_name = "stac9766 IEC958",
 327                 .channels_min = 1,
 328                 .channels_max = 2,
 329                 .rates = SNDRV_PCM_RATE_32000 | \
 330                         SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000,
 331                 .formats = SNDRV_PCM_FORMAT_IEC958_SUBFRAME_BE,
 332         },
 333         /* alsa ops */
 334         .ops = &stac9766_dai_ops_digital,
 335 }
 336 };
 337
 338 static int stac9766_codec_probe(struct snd_soc_codec *codec)
 339 {
 340         int ret = 0;
 341
 342         printk(KERN_INFO "STAC9766 SoC Audio Codec %s\n", STAC9766_VERSION);
 343
 344         ret = snd_soc_new_ac97_codec(codec, &soc_ac97_ops, 0);
 345         if (ret < 0)
 346                 goto codec_err;
 347
 348         /* do a cold reset for the controller and then try
 349          * a warm reset followed by an optional cold reset for codec */
 350         stac9766_reset(codec, 0);
 351         ret = stac9766_reset(codec, 1);
 352         if (ret < 0) {
 353                 printk(KERN_ERR "Failed to reset STAC9766: AC97 link error\n");
 354                 goto codec_err;
 355         }
 356
 357         stac9766_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
 358
 359         snd_soc_add_controls(codec, stac9766_snd_ac97_controls,
 360                              ARRAY_SIZE(stac9766_snd_ac97_controls));
 361
 362         return 0;
 363
 364 codec_err:
 365         snd_soc_free_ac97_codec(codec);
 366         return ret;
 367 }
 368
 369 static int stac9766_codec_remove(struct snd_soc_codec *codec)
 370 {
 371         snd_soc_free_ac97_codec(codec);
 372         return 0;
 373 }
 374
 375 static struct snd_soc_codec_driver soc_codec_dev_stac9766 = {
 376         .write = stac9766_ac97_write,
 377         .read = stac9766_ac97_read,
 378         .set_bias_level = stac9766_set_bias_level,
 379         .probe = stac9766_codec_probe,
 380         .remove = stac9766_codec_remove,
 381         .suspend = stac9766_codec_suspend,
 382         .resume = stac9766_codec_resume,
 383         .reg_cache_size = sizeof(stac9766_reg),
 384         .reg_word_size = sizeof(u16),
 385         .reg_cache_step = 2,
 386         .reg_cache_default = stac9766_reg,
 387 };
 388
 389 static __devinit int stac9766_probe(struct platform_device *pdev)
 390 {
 391         return snd_soc_register_codec(&pdev->dev,
 392                         &soc_codec_dev_stac9766, stac9766_dai, ARRAY_SIZE(stac9766_dai));
 393 }
 394
 395 static int __devexit stac9766_remove(struct platform_device *pdev)
 396 {
 397         snd_soc_unregister_codec(&pdev->dev);
 398         return 0;
 399 }
 400
 401 static struct platform_driver stac9766_codec_driver = {
 402         .driver = {
 403                         .name = "stac9766-codec",
 404                         .owner = THIS_MODULE,
 405         },
 406
 407         .probe = stac9766_probe,
 408         .remove = __devexit_p(stac9766_remove),
 409 };
 410
 411 static int __init stac9766_init(void)
 412 {
 413         return platform_driver_register(&stac9766_codec_driver);
 414 }
 415 module_init(stac9766_init);
 416
 417 static void __exit stac9766_exit(void)
 418 {
 419         platform_driver_unregister(&stac9766_codec_driver);
 420 }
 421 module_exit(stac9766_exit);
 422
 423 MODULE_DESCRIPTION("ASoC stac9766 driver");
 424 MODULE_AUTHOR("Jon Smirl <jonsmirl@gmail.com>");
 425 MODULE_LICENSE("GPL");