sound/soc/codecs/wm9705.c

   1 /*
   2  * wm9705.c  --  ALSA Soc WM9705 codec support
   3  *
   4  * Copyright 2008 Ian Molton <spyro@f2s.com>
   5  *
   6  *  This program is free software; you can redistribute  it and/or modify it
   7  *  under  the terms of  the GNU General  Public License as published by the
   8  *  Free Software Foundation; Version 2 of the  License only.
   9  *
  10  */
  11
  12 #include <linux/init.h>
  13 #include <linux/slab.h>
  14 #include <linux/module.h>
  15 #include <linux/kernel.h>
  16 #include <linux/device.h>
  17 #include <linux/regmap.h>
  18 #include <sound/core.h>
  19 #include <sound/pcm.h>
  20 #include <sound/ac97_codec.h>
  21 #include <sound/initval.h>
  22 #include <sound/soc.h>
  23
  24 #define WM9705_VENDOR_ID 0x574d4c05
  25 #define WM9705_VENDOR_ID_MASK 0xffffffff
  26
  27 static const struct reg_default wm9705_reg_defaults[] = {
  28         { 0x02, 0x8000 },
  29         { 0x04, 0x8000 },
  30         { 0x06, 0x8000 },
  31         { 0x0a, 0x8000 },
  32         { 0x0c, 0x8008 },
  33         { 0x0e, 0x8008 },
  34         { 0x10, 0x8808 },
  35         { 0x12, 0x8808 },
  36         { 0x14, 0x8808 },
  37         { 0x16, 0x8808 },
  38         { 0x18, 0x8808 },
  39         { 0x1a, 0x0000 },
  40         { 0x1c, 0x8000 },
  41         { 0x20, 0x0000 },
  42         { 0x22, 0x0000 },
  43         { 0x26, 0x000f },
  44         { 0x28, 0x0605 },
  45         { 0x2a, 0x0000 },
  46         { 0x2c, 0xbb80 },
  47         { 0x32, 0xbb80 },
  48         { 0x34, 0x2000 },
  49         { 0x5a, 0x0000 },
  50         { 0x5c, 0x0000 },
  51         { 0x72, 0x0808 },
  52         { 0x74, 0x0000 },
  53         { 0x76, 0x0006 },
  54         { 0x78, 0x0000 },
  55         { 0x7a, 0x0000 },
  56 };
  57
  58 static const struct regmap_config wm9705_regmap_config = {
  59         .reg_bits = 16,
  60         .reg_stride = 2,
  61         .val_bits = 16,
  62         .max_register = 0x7e,
  63         .cache_type = REGCACHE_RBTREE,
  64
  65         .volatile_reg = regmap_ac97_default_volatile,
  66
  67         .reg_defaults = wm9705_reg_defaults,
  68         .num_reg_defaults = ARRAY_SIZE(wm9705_reg_defaults),
  69 };
  70
  71 static const struct snd_kcontrol_new wm9705_snd_ac97_controls[] = {
  72         SOC_DOUBLE("Master Playback Volume", AC97_MASTER, 8, 0, 31, 1),
  73         SOC_SINGLE("Master Playback Switch", AC97_MASTER, 15, 1, 1),
  74         SOC_DOUBLE("Headphone Playback Volume", AC97_HEADPHONE, 8, 0, 31, 1),
  75         SOC_SINGLE("Headphone Playback Switch", AC97_HEADPHONE, 15, 1, 1),
  76         SOC_DOUBLE("PCM Playback Volume", AC97_PCM, 8, 0, 31, 1),
  77         SOC_SINGLE("PCM Playback Switch", AC97_PCM, 15, 1, 1),
  78         SOC_SINGLE("Mono Playback Volume", AC97_MASTER_MONO, 0, 31, 1),
  79         SOC_SINGLE("Mono Playback Switch", AC97_MASTER_MONO, 15, 1, 1),
  80         SOC_SINGLE("PCBeep Playback Volume", AC97_PC_BEEP, 1, 15, 1),
  81         SOC_SINGLE("Phone Playback Volume", AC97_PHONE, 0, 31, 1),
  82         SOC_DOUBLE("Line Playback Volume", AC97_LINE, 8, 0, 31, 1),
  83         SOC_DOUBLE("CD Playback Volume", AC97_CD, 8, 0, 31, 1),
  84         SOC_SINGLE("Mic Playback Volume", AC97_MIC, 0, 31, 1),
  85         SOC_SINGLE("Mic 20dB Boost Switch", AC97_MIC, 6, 1, 0),
  86         SOC_DOUBLE("Capture Volume", AC97_REC_GAIN, 8, 0, 15, 0),
  87         SOC_SINGLE("Capture Switch", AC97_REC_GAIN, 15, 1, 1),
  88 };
  89
  90 static const char *wm9705_mic[] = {"Mic 1", "Mic 2"};
  91 static const char *wm9705_rec_sel[] = {"Mic", "CD", "NC", "NC",
  92         "Line", "Stereo Mix", "Mono Mix", "Phone"};
  93
  94 static SOC_ENUM_SINGLE_DECL(wm9705_enum_mic,
  95                             AC97_GENERAL_PURPOSE, 8, wm9705_mic);
  96 static SOC_ENUM_SINGLE_DECL(wm9705_enum_rec_l,
  97                             AC97_REC_SEL, 8, wm9705_rec_sel);
  98 static SOC_ENUM_SINGLE_DECL(wm9705_enum_rec_r,
  99                             AC97_REC_SEL, 0, wm9705_rec_sel);
 100
 101 /* Headphone Mixer */
 102 static const struct snd_kcontrol_new wm9705_hp_mixer_controls[] = {
 103         SOC_DAPM_SINGLE("PCBeep Playback Switch", AC97_PC_BEEP, 15, 1, 1),
 104         SOC_DAPM_SINGLE("CD Playback Switch", AC97_CD, 15, 1, 1),
 105         SOC_DAPM_SINGLE("Mic Playback Switch", AC97_MIC, 15, 1, 1),
 106         SOC_DAPM_SINGLE("Phone Playback Switch", AC97_PHONE, 15, 1, 1),
 107         SOC_DAPM_SINGLE("Line Playback Switch", AC97_LINE, 15, 1, 1),
 108 };
 109
 110 /* Mic source */
 111 static const struct snd_kcontrol_new wm9705_mic_src_controls =
 112         SOC_DAPM_ENUM("Route", wm9705_enum_mic);
 113
 114 /* Capture source */
 115 static const struct snd_kcontrol_new wm9705_capture_selectl_controls =
 116         SOC_DAPM_ENUM("Route", wm9705_enum_rec_l);
 117 static const struct snd_kcontrol_new wm9705_capture_selectr_controls =
 118         SOC_DAPM_ENUM("Route", wm9705_enum_rec_r);
 119
 120 /* DAPM widgets */
 121 static const struct snd_soc_dapm_widget wm9705_dapm_widgets[] = {
 122         SND_SOC_DAPM_MUX("Mic Source", SND_SOC_NOPM, 0, 0,
 123                 &wm9705_mic_src_controls),
 124         SND_SOC_DAPM_MUX("Left Capture Source", SND_SOC_NOPM, 0, 0,
 125                 &wm9705_capture_selectl_controls),
 126         SND_SOC_DAPM_MUX("Right Capture Source", SND_SOC_NOPM, 0, 0,
 127                 &wm9705_capture_selectr_controls),
 128         SND_SOC_DAPM_DAC("Left DAC", "Left HiFi Playback",
 129                 SND_SOC_NOPM, 0, 0),
 130         SND_SOC_DAPM_DAC("Right DAC", "Right HiFi Playback",
 131                 SND_SOC_NOPM, 0, 0),
 132         SND_SOC_DAPM_MIXER_NAMED_CTL("HP Mixer", SND_SOC_NOPM, 0, 0,
 133                 &wm9705_hp_mixer_controls[0],
 134                 ARRAY_SIZE(wm9705_hp_mixer_controls)),
 135         SND_SOC_DAPM_MIXER("Mono Mixer", SND_SOC_NOPM, 0, 0, NULL, 0),
 136         SND_SOC_DAPM_ADC("Left ADC", "Left HiFi Capture", SND_SOC_NOPM, 0, 0),
 137         SND_SOC_DAPM_ADC("Right ADC", "Right HiFi Capture", SND_SOC_NOPM, 0, 0),
 138         SND_SOC_DAPM_PGA("Headphone PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
 139         SND_SOC_DAPM_PGA("Speaker PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
 140         SND_SOC_DAPM_PGA("Line PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
 141         SND_SOC_DAPM_PGA("Line out PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
 142         SND_SOC_DAPM_PGA("Mono PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
 143         SND_SOC_DAPM_PGA("Phone PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
 144         SND_SOC_DAPM_PGA("Mic PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
 145         SND_SOC_DAPM_PGA("PCBEEP PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
 146         SND_SOC_DAPM_PGA("CD PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
 147         SND_SOC_DAPM_PGA("ADC PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
 148         SND_SOC_DAPM_OUTPUT("HPOUTL"),
 149         SND_SOC_DAPM_OUTPUT("HPOUTR"),
 150         SND_SOC_DAPM_OUTPUT("LOUT"),
 151         SND_SOC_DAPM_OUTPUT("ROUT"),
 152         SND_SOC_DAPM_OUTPUT("MONOOUT"),
 153         SND_SOC_DAPM_INPUT("PHONE"),
 154         SND_SOC_DAPM_INPUT("LINEINL"),
 155         SND_SOC_DAPM_INPUT("LINEINR"),
 156         SND_SOC_DAPM_INPUT("CDINL"),
 157         SND_SOC_DAPM_INPUT("CDINR"),
 158         SND_SOC_DAPM_INPUT("PCBEEP"),
 159         SND_SOC_DAPM_INPUT("MIC1"),
 160         SND_SOC_DAPM_INPUT("MIC2"),
 161 };
 162
 163 /* Audio map
 164  * WM9705 has no switches to disable the route from the inputs to the HP mixer
 165  * so in order to prevent active inputs from forcing the audio outputs to be
 166  * constantly enabled, we use the mutes on those inputs to simulate such
 167  * controls.
 168  */
 169 static const struct snd_soc_dapm_route wm9705_audio_map[] = {
 170         /* HP mixer */
 171         {"HP Mixer", "PCBeep Playback Switch", "PCBEEP PGA"},
 172         {"HP Mixer", "CD Playback Switch", "CD PGA"},
 173         {"HP Mixer", "Mic Playback Switch", "Mic PGA"},
 174         {"HP Mixer", "Phone Playback Switch", "Phone PGA"},
 175         {"HP Mixer", "Line Playback Switch", "Line PGA"},
 176         {"HP Mixer", NULL, "Left DAC"},
 177         {"HP Mixer", NULL, "Right DAC"},
 178
 179         /* mono mixer */
 180         {"Mono Mixer", NULL, "HP Mixer"},
 181
 182         /* outputs */
 183         {"Headphone PGA", NULL, "HP Mixer"},
 184         {"HPOUTL", NULL, "Headphone PGA"},
 185         {"HPOUTR", NULL, "Headphone PGA"},
 186         {"Line out PGA", NULL, "HP Mixer"},
 187         {"LOUT", NULL, "Line out PGA"},
 188         {"ROUT", NULL, "Line out PGA"},
 189         {"Mono PGA", NULL, "Mono Mixer"},
 190         {"MONOOUT", NULL, "Mono PGA"},
 191
 192         /* inputs */
 193         {"CD PGA", NULL, "CDINL"},
 194         {"CD PGA", NULL, "CDINR"},
 195         {"Line PGA", NULL, "LINEINL"},
 196         {"Line PGA", NULL, "LINEINR"},
 197         {"Phone PGA", NULL, "PHONE"},
 198         {"Mic Source", "Mic 1", "MIC1"},
 199         {"Mic Source", "Mic 2", "MIC2"},
 200         {"Mic PGA", NULL, "Mic Source"},
 201         {"PCBEEP PGA", NULL, "PCBEEP"},
 202
 203         /* Left capture selector */
 204         {"Left Capture Source", "Mic", "Mic Source"},
 205         {"Left Capture Source", "CD", "CDINL"},
 206         {"Left Capture Source", "Line", "LINEINL"},
 207         {"Left Capture Source", "Stereo Mix", "HP Mixer"},
 208         {"Left Capture Source", "Mono Mix", "HP Mixer"},
 209         {"Left Capture Source", "Phone", "PHONE"},
 210
 211         /* Right capture source */
 212         {"Right Capture Source", "Mic", "Mic Source"},
 213         {"Right Capture Source", "CD", "CDINR"},
 214         {"Right Capture Source", "Line", "LINEINR"},
 215         {"Right Capture Source", "Stereo Mix", "HP Mixer"},
 216         {"Right Capture Source", "Mono Mix", "HP Mixer"},
 217         {"Right Capture Source", "Phone", "PHONE"},
 218
 219         {"ADC PGA", NULL, "Left Capture Source"},
 220         {"ADC PGA", NULL, "Right Capture Source"},
 221
 222         /* ADC's */
 223         {"Left ADC",  NULL, "ADC PGA"},
 224         {"Right ADC", NULL, "ADC PGA"},
 225 };
 226
 227 static int ac97_prepare(struct snd_pcm_substream *substream,
 228                         struct snd_soc_dai *dai)
 229 {
 230         struct snd_soc_codec *codec = dai->codec;
 231         int reg;
 232
 233         snd_soc_update_bits(codec, AC97_EXTENDED_STATUS, 0x1, 0x1);
 234
 235         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
 236                 reg = AC97_PCM_FRONT_DAC_RATE;
 237         else
 238                 reg = AC97_PCM_LR_ADC_RATE;
 239
 240         return snd_soc_write(codec, reg, substream->runtime->rate);
 241 }
 242
 243 #define WM9705_AC97_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 | \
 244                         SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 | \
 245                         SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | \
 246                         SNDRV_PCM_RATE_48000)
 247
 248 static const struct snd_soc_dai_ops wm9705_dai_ops = {
 249         .prepare        = ac97_prepare,
 250 };
 251
 252 static struct snd_soc_dai_driver wm9705_dai[] = {
 253         {
 254                 .name = "wm9705-hifi",
 255                 .playback = {
 256                         .stream_name = "HiFi Playback",
 257                         .channels_min = 1,
 258                         .channels_max = 2,
 259                         .rates = WM9705_AC97_RATES,
 260                         .formats = SND_SOC_STD_AC97_FMTS,
 261                 },
 262                 .capture = {
 263                         .stream_name = "HiFi Capture",
 264                         .channels_min = 1,
 265                         .channels_max = 2,
 266                         .rates = WM9705_AC97_RATES,
 267                         .formats = SND_SOC_STD_AC97_FMTS,
 268                 },
 269                 .ops = &wm9705_dai_ops,
 270         },
 271         {
 272                 .name = "wm9705-aux",
 273                 .playback = {
 274                         .stream_name = "Aux Playback",
 275                         .channels_min = 1,
 276                         .channels_max = 1,
 277                         .rates = WM9705_AC97_RATES,
 278                         .formats = SNDRV_PCM_FMTBIT_S16_LE,
 279                 },
 280         }
 281 };
 282
 283 #ifdef CONFIG_PM
 284 static int wm9705_soc_suspend(struct snd_soc_codec *codec)
 285 {
 286         regcache_cache_bypass(codec->component.regmap, true);
 287         snd_soc_write(codec, AC97_POWERDOWN, 0xffff);
 288         regcache_cache_bypass(codec->component.regmap, false);
 289
 290         return 0;
 291 }
 292
 293 static int wm9705_soc_resume(struct snd_soc_codec *codec)
 294 {
 295         struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec);
 296         int ret;
 297
 298         ret = snd_ac97_reset(ac97, true, WM9705_VENDOR_ID,
 299                 WM9705_VENDOR_ID_MASK);
 300         if (ret < 0)
 301                 return ret;
 302
 303         regcache_sync(codec->component.regmap);
 304
 305         return 0;
 306 }
 307 #else
 308 #define wm9705_soc_suspend NULL
 309 #define wm9705_soc_resume NULL
 310 #endif
 311
 312 static int wm9705_soc_probe(struct snd_soc_codec *codec)
 313 {
 314         struct snd_ac97 *ac97;
 315         struct regmap *regmap;
 316         int ret;
 317
 318         ac97 = snd_soc_new_ac97_codec(codec, WM9705_VENDOR_ID,
 319                 WM9705_VENDOR_ID_MASK);
 320         if (IS_ERR(ac97)) {
 321                 dev_err(codec->dev, "Failed to register AC97 codec\n");
 322                 return PTR_ERR(ac97);
 323         }
 324
 325         regmap = regmap_init_ac97(ac97, &wm9705_regmap_config);
 326         if (IS_ERR(regmap)) {
 327                 ret = PTR_ERR(regmap);
 328                 goto err_free_ac97_codec;
 329         }
 330
 331         snd_soc_codec_set_drvdata(codec, ac97);
 332         snd_soc_codec_init_regmap(codec, regmap);
 333
 334         return 0;
 335 err_free_ac97_codec:
 336         snd_soc_free_ac97_codec(ac97);
 337         return ret;
 338 }
 339
 340 static int wm9705_soc_remove(struct snd_soc_codec *codec)
 341 {
 342         struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec);
 343
 344         snd_soc_codec_exit_regmap(codec);
 345         snd_soc_free_ac97_codec(ac97);
 346         return 0;
 347 }
 348
 349 static const struct snd_soc_codec_driver soc_codec_dev_wm9705 = {
 350         .probe =        wm9705_soc_probe,
 351         .remove =       wm9705_soc_remove,
 352         .suspend =      wm9705_soc_suspend,
 353         .resume =       wm9705_soc_resume,
 354
 355         .component_driver = {
 356                 .controls               = wm9705_snd_ac97_controls,
 357                 .num_controls           = ARRAY_SIZE(wm9705_snd_ac97_controls),
 358                 .dapm_widgets           = wm9705_dapm_widgets,
 359                 .num_dapm_widgets       = ARRAY_SIZE(wm9705_dapm_widgets),
 360                 .dapm_routes            = wm9705_audio_map,
 361                 .num_dapm_routes        = ARRAY_SIZE(wm9705_audio_map),
 362         },
 363 };
 364
 365 static int wm9705_probe(struct platform_device *pdev)
 366 {
 367         return snd_soc_register_codec(&pdev->dev,
 368                         &soc_codec_dev_wm9705, wm9705_dai, ARRAY_SIZE(wm9705_dai));
 369 }
 370
 371 static int wm9705_remove(struct platform_device *pdev)
 372 {
 373         snd_soc_unregister_codec(&pdev->dev);
 374         return 0;
 375 }
 376
 377 static struct platform_driver wm9705_codec_driver = {
 378         .driver = {
 379                         .name = "wm9705-codec",
 380         },
 381
 382         .probe = wm9705_probe,
 383         .remove = wm9705_remove,
 384 };
 385
 386 module_platform_driver(wm9705_codec_driver);
 387
 388 MODULE_DESCRIPTION("ASoC WM9705 driver");
 389 MODULE_AUTHOR("Ian Molton");
 390 MODULE_LICENSE("GPL v2");