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/mfd/wm97xx.h>
  15 #include <linux/module.h>
  16 #include <linux/kernel.h>
  17 #include <linux/device.h>
  18 #include <linux/regmap.h>
  19 #include <sound/core.h>
  20 #include <sound/pcm.h>
  21 #include <sound/ac97_codec.h>
  22 #include <sound/ac97/codec.h>
  23 #include <sound/ac97/compat.h>
  24 #include <sound/initval.h>
  25 #include <sound/soc.h>
  26
  27 #define WM9705_VENDOR_ID 0x574d4c05
  28 #define WM9705_VENDOR_ID_MASK 0xffffffff
  29
  30 struct wm9705_priv {
  31         struct snd_ac97 *ac97;
  32         struct wm97xx_platform_data *mfd_pdata;
  33 };
  34
  35 static const struct reg_default wm9705_reg_defaults[] = {
  36         { 0x02, 0x8000 },
  37         { 0x04, 0x8000 },
  38         { 0x06, 0x8000 },
  39         { 0x0a, 0x8000 },
  40         { 0x0c, 0x8008 },
  41         { 0x0e, 0x8008 },
  42         { 0x10, 0x8808 },
  43         { 0x12, 0x8808 },
  44         { 0x14, 0x8808 },
  45         { 0x16, 0x8808 },
  46         { 0x18, 0x8808 },
  47         { 0x1a, 0x0000 },
  48         { 0x1c, 0x8000 },
  49         { 0x20, 0x0000 },
  50         { 0x22, 0x0000 },
  51         { 0x26, 0x000f },
  52         { 0x28, 0x0605 },
  53         { 0x2a, 0x0000 },
  54         { 0x2c, 0xbb80 },
  55         { 0x32, 0xbb80 },
  56         { 0x34, 0x2000 },
  57         { 0x5a, 0x0000 },
  58         { 0x5c, 0x0000 },
  59         { 0x72, 0x0808 },
  60         { 0x74, 0x0000 },
  61         { 0x76, 0x0006 },
  62         { 0x78, 0x0000 },
  63         { 0x7a, 0x0000 },
  64 };
  65
  66 static const struct regmap_config wm9705_regmap_config = {
  67         .reg_bits = 16,
  68         .reg_stride = 2,
  69         .val_bits = 16,
  70         .max_register = 0x7e,
  71         .cache_type = REGCACHE_RBTREE,
  72
  73         .volatile_reg = regmap_ac97_default_volatile,
  74
  75         .reg_defaults = wm9705_reg_defaults,
  76         .num_reg_defaults = ARRAY_SIZE(wm9705_reg_defaults),
  77 };
  78
  79 static const struct snd_kcontrol_new wm9705_snd_ac97_controls[] = {
  80         SOC_DOUBLE("Master Playback Volume", AC97_MASTER, 8, 0, 31, 1),
  81         SOC_SINGLE("Master Playback Switch", AC97_MASTER, 15, 1, 1),
  82         SOC_DOUBLE("Headphone Playback Volume", AC97_HEADPHONE, 8, 0, 31, 1),
  83         SOC_SINGLE("Headphone Playback Switch", AC97_HEADPHONE, 15, 1, 1),
  84         SOC_DOUBLE("PCM Playback Volume", AC97_PCM, 8, 0, 31, 1),
  85         SOC_SINGLE("PCM Playback Switch", AC97_PCM, 15, 1, 1),
  86         SOC_SINGLE("Mono Playback Volume", AC97_MASTER_MONO, 0, 31, 1),
  87         SOC_SINGLE("Mono Playback Switch", AC97_MASTER_MONO, 15, 1, 1),
  88         SOC_SINGLE("PCBeep Playback Volume", AC97_PC_BEEP, 1, 15, 1),
  89         SOC_SINGLE("Phone Playback Volume", AC97_PHONE, 0, 31, 1),
  90         SOC_DOUBLE("Line Playback Volume", AC97_LINE, 8, 0, 31, 1),
  91         SOC_DOUBLE("CD Playback Volume", AC97_CD, 8, 0, 31, 1),
  92         SOC_SINGLE("Mic Playback Volume", AC97_MIC, 0, 31, 1),
  93         SOC_SINGLE("Mic 20dB Boost Switch", AC97_MIC, 6, 1, 0),
  94         SOC_DOUBLE("Capture Volume", AC97_REC_GAIN, 8, 0, 15, 0),
  95         SOC_SINGLE("Capture Switch", AC97_REC_GAIN, 15, 1, 1),
  96 };
  97
  98 static const char *wm9705_mic[] = {"Mic 1", "Mic 2"};
  99 static const char *wm9705_rec_sel[] = {"Mic", "CD", "NC", "NC",
 100         "Line", "Stereo Mix", "Mono Mix", "Phone"};
 101
 102 static SOC_ENUM_SINGLE_DECL(wm9705_enum_mic,
 103                             AC97_GENERAL_PURPOSE, 8, wm9705_mic);
 104 static SOC_ENUM_SINGLE_DECL(wm9705_enum_rec_l,
 105                             AC97_REC_SEL, 8, wm9705_rec_sel);
 106 static SOC_ENUM_SINGLE_DECL(wm9705_enum_rec_r,
 107                             AC97_REC_SEL, 0, wm9705_rec_sel);
 108
 109 /* Headphone Mixer */
 110 static const struct snd_kcontrol_new wm9705_hp_mixer_controls[] = {
 111         SOC_DAPM_SINGLE("PCBeep Playback Switch", AC97_PC_BEEP, 15, 1, 1),
 112         SOC_DAPM_SINGLE("CD Playback Switch", AC97_CD, 15, 1, 1),
 113         SOC_DAPM_SINGLE("Mic Playback Switch", AC97_MIC, 15, 1, 1),
 114         SOC_DAPM_SINGLE("Phone Playback Switch", AC97_PHONE, 15, 1, 1),
 115         SOC_DAPM_SINGLE("Line Playback Switch", AC97_LINE, 15, 1, 1),
 116 };
 117
 118 /* Mic source */
 119 static const struct snd_kcontrol_new wm9705_mic_src_controls =
 120         SOC_DAPM_ENUM("Route", wm9705_enum_mic);
 121
 122 /* Capture source */
 123 static const struct snd_kcontrol_new wm9705_capture_selectl_controls =
 124         SOC_DAPM_ENUM("Route", wm9705_enum_rec_l);
 125 static const struct snd_kcontrol_new wm9705_capture_selectr_controls =
 126         SOC_DAPM_ENUM("Route", wm9705_enum_rec_r);
 127
 128 /* DAPM widgets */
 129 static const struct snd_soc_dapm_widget wm9705_dapm_widgets[] = {
 130         SND_SOC_DAPM_MUX("Mic Source", SND_SOC_NOPM, 0, 0,
 131                 &wm9705_mic_src_controls),
 132         SND_SOC_DAPM_MUX("Left Capture Source", SND_SOC_NOPM, 0, 0,
 133                 &wm9705_capture_selectl_controls),
 134         SND_SOC_DAPM_MUX("Right Capture Source", SND_SOC_NOPM, 0, 0,
 135                 &wm9705_capture_selectr_controls),
 136         SND_SOC_DAPM_DAC("Left DAC", "Left HiFi Playback",
 137                 SND_SOC_NOPM, 0, 0),
 138         SND_SOC_DAPM_DAC("Right DAC", "Right HiFi Playback",
 139                 SND_SOC_NOPM, 0, 0),
 140         SND_SOC_DAPM_MIXER_NAMED_CTL("HP Mixer", SND_SOC_NOPM, 0, 0,
 141                 &wm9705_hp_mixer_controls[0],
 142                 ARRAY_SIZE(wm9705_hp_mixer_controls)),
 143         SND_SOC_DAPM_MIXER("Mono Mixer", SND_SOC_NOPM, 0, 0, NULL, 0),
 144         SND_SOC_DAPM_ADC("Left ADC", "Left HiFi Capture", SND_SOC_NOPM, 0, 0),
 145         SND_SOC_DAPM_ADC("Right ADC", "Right HiFi Capture", SND_SOC_NOPM, 0, 0),
 146         SND_SOC_DAPM_PGA("Headphone PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
 147         SND_SOC_DAPM_PGA("Speaker PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
 148         SND_SOC_DAPM_PGA("Line PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
 149         SND_SOC_DAPM_PGA("Line out PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
 150         SND_SOC_DAPM_PGA("Mono PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
 151         SND_SOC_DAPM_PGA("Phone PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
 152         SND_SOC_DAPM_PGA("Mic PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
 153         SND_SOC_DAPM_PGA("PCBEEP PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
 154         SND_SOC_DAPM_PGA("CD PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
 155         SND_SOC_DAPM_PGA("ADC PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
 156         SND_SOC_DAPM_OUTPUT("HPOUTL"),
 157         SND_SOC_DAPM_OUTPUT("HPOUTR"),
 158         SND_SOC_DAPM_OUTPUT("LOUT"),
 159         SND_SOC_DAPM_OUTPUT("ROUT"),
 160         SND_SOC_DAPM_OUTPUT("MONOOUT"),
 161         SND_SOC_DAPM_INPUT("PHONE"),
 162         SND_SOC_DAPM_INPUT("LINEINL"),
 163         SND_SOC_DAPM_INPUT("LINEINR"),
 164         SND_SOC_DAPM_INPUT("CDINL"),
 165         SND_SOC_DAPM_INPUT("CDINR"),
 166         SND_SOC_DAPM_INPUT("PCBEEP"),
 167         SND_SOC_DAPM_INPUT("MIC1"),
 168         SND_SOC_DAPM_INPUT("MIC2"),
 169 };
 170
 171 /* Audio map
 172  * WM9705 has no switches to disable the route from the inputs to the HP mixer
 173  * so in order to prevent active inputs from forcing the audio outputs to be
 174  * constantly enabled, we use the mutes on those inputs to simulate such
 175  * controls.
 176  */
 177 static const struct snd_soc_dapm_route wm9705_audio_map[] = {
 178         /* HP mixer */
 179         {"HP Mixer", "PCBeep Playback Switch", "PCBEEP PGA"},
 180         {"HP Mixer", "CD Playback Switch", "CD PGA"},
 181         {"HP Mixer", "Mic Playback Switch", "Mic PGA"},
 182         {"HP Mixer", "Phone Playback Switch", "Phone PGA"},
 183         {"HP Mixer", "Line Playback Switch", "Line PGA"},
 184         {"HP Mixer", NULL, "Left DAC"},
 185         {"HP Mixer", NULL, "Right DAC"},
 186
 187         /* mono mixer */
 188         {"Mono Mixer", NULL, "HP Mixer"},
 189
 190         /* outputs */
 191         {"Headphone PGA", NULL, "HP Mixer"},
 192         {"HPOUTL", NULL, "Headphone PGA"},
 193         {"HPOUTR", NULL, "Headphone PGA"},
 194         {"Line out PGA", NULL, "HP Mixer"},
 195         {"LOUT", NULL, "Line out PGA"},
 196         {"ROUT", NULL, "Line out PGA"},
 197         {"Mono PGA", NULL, "Mono Mixer"},
 198         {"MONOOUT", NULL, "Mono PGA"},
 199
 200         /* inputs */
 201         {"CD PGA", NULL, "CDINL"},
 202         {"CD PGA", NULL, "CDINR"},
 203         {"Line PGA", NULL, "LINEINL"},
 204         {"Line PGA", NULL, "LINEINR"},
 205         {"Phone PGA", NULL, "PHONE"},
 206         {"Mic Source", "Mic 1", "MIC1"},
 207         {"Mic Source", "Mic 2", "MIC2"},
 208         {"Mic PGA", NULL, "Mic Source"},
 209         {"PCBEEP PGA", NULL, "PCBEEP"},
 210
 211         /* Left capture selector */
 212         {"Left Capture Source", "Mic", "Mic Source"},
 213         {"Left Capture Source", "CD", "CDINL"},
 214         {"Left Capture Source", "Line", "LINEINL"},
 215         {"Left Capture Source", "Stereo Mix", "HP Mixer"},
 216         {"Left Capture Source", "Mono Mix", "HP Mixer"},
 217         {"Left Capture Source", "Phone", "PHONE"},
 218
 219         /* Right capture source */
 220         {"Right Capture Source", "Mic", "Mic Source"},
 221         {"Right Capture Source", "CD", "CDINR"},
 222         {"Right Capture Source", "Line", "LINEINR"},
 223         {"Right Capture Source", "Stereo Mix", "HP Mixer"},
 224         {"Right Capture Source", "Mono Mix", "HP Mixer"},
 225         {"Right Capture Source", "Phone", "PHONE"},
 226
 227         {"ADC PGA", NULL, "Left Capture Source"},
 228         {"ADC PGA", NULL, "Right Capture Source"},
 229
 230         /* ADC's */
 231         {"Left ADC",  NULL, "ADC PGA"},
 232         {"Right ADC", NULL, "ADC PGA"},
 233 };
 234
 235 static int ac97_prepare(struct snd_pcm_substream *substream,
 236                         struct snd_soc_dai *dai)
 237 {
 238         struct snd_soc_codec *codec = dai->codec;
 239         int reg;
 240
 241         snd_soc_update_bits(codec, AC97_EXTENDED_STATUS, 0x1, 0x1);
 242
 243         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
 244                 reg = AC97_PCM_FRONT_DAC_RATE;
 245         else
 246                 reg = AC97_PCM_LR_ADC_RATE;
 247
 248         return snd_soc_write(codec, reg, substream->runtime->rate);
 249 }
 250
 251 #define WM9705_AC97_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 | \
 252                         SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 | \
 253                         SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | \
 254                         SNDRV_PCM_RATE_48000)
 255
 256 static const struct snd_soc_dai_ops wm9705_dai_ops = {
 257         .prepare        = ac97_prepare,
 258 };
 259
 260 static struct snd_soc_dai_driver wm9705_dai[] = {
 261         {
 262                 .name = "wm9705-hifi",
 263                 .playback = {
 264                         .stream_name = "HiFi Playback",
 265                         .channels_min = 1,
 266                         .channels_max = 2,
 267                         .rates = WM9705_AC97_RATES,
 268                         .formats = SND_SOC_STD_AC97_FMTS,
 269                 },
 270                 .capture = {
 271                         .stream_name = "HiFi Capture",
 272                         .channels_min = 1,
 273                         .channels_max = 2,
 274                         .rates = WM9705_AC97_RATES,
 275                         .formats = SND_SOC_STD_AC97_FMTS,
 276                 },
 277                 .ops = &wm9705_dai_ops,
 278         },
 279         {
 280                 .name = "wm9705-aux",
 281                 .playback = {
 282                         .stream_name = "Aux Playback",
 283                         .channels_min = 1,
 284                         .channels_max = 1,
 285                         .rates = WM9705_AC97_RATES,
 286                         .formats = SNDRV_PCM_FMTBIT_S16_LE,
 287                 },
 288         }
 289 };
 290
 291 #ifdef CONFIG_PM
 292 static int wm9705_soc_suspend(struct snd_soc_codec *codec)
 293 {
 294         regcache_cache_bypass(codec->component.regmap, true);
 295         snd_soc_write(codec, AC97_POWERDOWN, 0xffff);
 296         regcache_cache_bypass(codec->component.regmap, false);
 297
 298         return 0;
 299 }
 300
 301 static int wm9705_soc_resume(struct snd_soc_codec *codec)
 302 {
 303         struct wm9705_priv *wm9705 = snd_soc_codec_get_drvdata(codec);
 304         int ret;
 305
 306         ret = snd_ac97_reset(wm9705->ac97, true, WM9705_VENDOR_ID,
 307                 WM9705_VENDOR_ID_MASK);
 308         if (ret < 0)
 309                 return ret;
 310
 311         regcache_sync(codec->component.regmap);
 312
 313         return 0;
 314 }
 315 #else
 316 #define wm9705_soc_suspend NULL
 317 #define wm9705_soc_resume NULL
 318 #endif
 319
 320 static int wm9705_soc_probe(struct snd_soc_codec *codec)
 321 {
 322         struct wm9705_priv *wm9705 = snd_soc_codec_get_drvdata(codec);
 323         struct regmap *regmap;
 324
 325         if (wm9705->mfd_pdata) {
 326                 wm9705->ac97 = wm9705->mfd_pdata->ac97;
 327                 regmap = wm9705->mfd_pdata->regmap;
 328         } else {
 329 #ifdef CONFIG_SND_SOC_AC97_BUS
 330                 wm9705->ac97 = snd_soc_new_ac97_codec(codec, WM9705_VENDOR_ID,
 331                                                       WM9705_VENDOR_ID_MASK);
 332                 if (IS_ERR(wm9705->ac97)) {
 333                         dev_err(codec->dev, "Failed to register AC97 codec\n");
 334                         return PTR_ERR(wm9705->ac97);
 335                 }
 336
 337                 regmap = regmap_init_ac97(wm9705->ac97, &wm9705_regmap_config);
 338                 if (IS_ERR(regmap)) {
 339                         snd_soc_free_ac97_codec(wm9705->ac97);
 340                         return PTR_ERR(regmap);
 341                 }
 342 #endif
 343         }
 344
 345         snd_soc_codec_set_drvdata(codec, wm9705->ac97);
 346         snd_soc_codec_init_regmap(codec, regmap);
 347
 348         return 0;
 349 }
 350
 351 static int wm9705_soc_remove(struct snd_soc_codec *codec)
 352 {
 353 #ifdef CONFIG_SND_SOC_AC97_BUS
 354         struct wm9705_priv *wm9705 = snd_soc_codec_get_drvdata(codec);
 355
 356         if (!wm9705->mfd_pdata) {
 357                 snd_soc_codec_exit_regmap(codec);
 358                 snd_soc_free_ac97_codec(wm9705->ac97);
 359         }
 360 #endif
 361         return 0;
 362 }
 363
 364 static const struct snd_soc_codec_driver soc_codec_dev_wm9705 = {
 365         .probe =        wm9705_soc_probe,
 366         .remove =       wm9705_soc_remove,
 367         .suspend =      wm9705_soc_suspend,
 368         .resume =       wm9705_soc_resume,
 369
 370         .component_driver = {
 371                 .controls               = wm9705_snd_ac97_controls,
 372                 .num_controls           = ARRAY_SIZE(wm9705_snd_ac97_controls),
 373                 .dapm_widgets           = wm9705_dapm_widgets,
 374                 .num_dapm_widgets       = ARRAY_SIZE(wm9705_dapm_widgets),
 375                 .dapm_routes            = wm9705_audio_map,
 376                 .num_dapm_routes        = ARRAY_SIZE(wm9705_audio_map),
 377         },
 378 };
 379
 380 static int wm9705_probe(struct platform_device *pdev)
 381 {
 382         struct wm9705_priv *wm9705;
 383
 384         wm9705 = devm_kzalloc(&pdev->dev, sizeof(*wm9705), GFP_KERNEL);
 385         if (wm9705 == NULL)
 386                 return -ENOMEM;
 387
 388         wm9705->mfd_pdata = dev_get_platdata(&pdev->dev);
 389         platform_set_drvdata(pdev, wm9705);
 390
 391         return snd_soc_register_codec(&pdev->dev,
 392                         &soc_codec_dev_wm9705, wm9705_dai, ARRAY_SIZE(wm9705_dai));
 393 }
 394
 395 static int wm9705_remove(struct platform_device *pdev)
 396 {
 397         snd_soc_unregister_codec(&pdev->dev);
 398         return 0;
 399 }
 400
 401 static struct platform_driver wm9705_codec_driver = {
 402         .driver = {
 403                         .name = "wm9705-codec",
 404         },
 405
 406         .probe = wm9705_probe,
 407         .remove = wm9705_remove,
 408 };
 409
 410 module_platform_driver(wm9705_codec_driver);
 411
 412 MODULE_DESCRIPTION("ASoC WM9705 driver");
 413 MODULE_AUTHOR("Ian Molton");
 414 MODULE_LICENSE("GPL v2");