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 <sound/core.h>
  18 #include <sound/pcm.h>
  19 #include <sound/ac97_codec.h>
  20 #include <sound/initval.h>
  21 #include <sound/soc.h>
  22
  23 #include "wm9705.h"
  24
  25 #define WM9705_VENDOR_ID 0x574d4c05
  26 #define WM9705_VENDOR_ID_MASK 0xffffffff
  27
  28 /*
  29  * WM9705 register cache
  30  */
  31 static const u16 wm9705_reg[] = {
  32         0x6150, 0x8000, 0x8000, 0x8000, /* 0x0  */
  33         0x0000, 0x8000, 0x8008, 0x8008, /* 0x8  */
  34         0x8808, 0x8808, 0x8808, 0x8808, /* 0x10 */
  35         0x8808, 0x0000, 0x8000, 0x0000, /* 0x18 */
  36         0x0000, 0x0000, 0x0000, 0x000f, /* 0x20 */
  37         0x0605, 0x0000, 0xbb80, 0x0000, /* 0x28 */
  38         0x0000, 0xbb80, 0x0000, 0x0000, /* 0x30 */
  39         0x0000, 0x2000, 0x0000, 0x0000, /* 0x38 */
  40         0x0000, 0x0000, 0x0000, 0x0000, /* 0x40 */
  41         0x0000, 0x0000, 0x0000, 0x0000, /* 0x48 */
  42         0x0000, 0x0000, 0x0000, 0x0000, /* 0x50 */
  43         0x0000, 0x0000, 0x0000, 0x0000, /* 0x58 */
  44         0x0000, 0x0000, 0x0000, 0x0000, /* 0x60 */
  45         0x0000, 0x0000, 0x0000, 0x0000, /* 0x68 */
  46         0x0000, 0x0808, 0x0000, 0x0006, /* 0x70 */
  47         0x0000, 0x0000, 0x574d, 0x4c05, /* 0x78 */
  48 };
  49
  50 static const struct snd_kcontrol_new wm9705_snd_ac97_controls[] = {
  51         SOC_DOUBLE("Master Playback Volume", AC97_MASTER, 8, 0, 31, 1),
  52         SOC_SINGLE("Master Playback Switch", AC97_MASTER, 15, 1, 1),
  53         SOC_DOUBLE("Headphone Playback Volume", AC97_HEADPHONE, 8, 0, 31, 1),
  54         SOC_SINGLE("Headphone Playback Switch", AC97_HEADPHONE, 15, 1, 1),
  55         SOC_DOUBLE("PCM Playback Volume", AC97_PCM, 8, 0, 31, 1),
  56         SOC_SINGLE("PCM Playback Switch", AC97_PCM, 15, 1, 1),
  57         SOC_SINGLE("Mono Playback Volume", AC97_MASTER_MONO, 0, 31, 1),
  58         SOC_SINGLE("Mono Playback Switch", AC97_MASTER_MONO, 15, 1, 1),
  59         SOC_SINGLE("PCBeep Playback Volume", AC97_PC_BEEP, 1, 15, 1),
  60         SOC_SINGLE("Phone Playback Volume", AC97_PHONE, 0, 31, 1),
  61         SOC_DOUBLE("Line Playback Volume", AC97_LINE, 8, 0, 31, 1),
  62         SOC_DOUBLE("CD Playback Volume", AC97_CD, 8, 0, 31, 1),
  63         SOC_SINGLE("Mic Playback Volume", AC97_MIC, 0, 31, 1),
  64         SOC_SINGLE("Mic 20dB Boost Switch", AC97_MIC, 6, 1, 0),
  65         SOC_DOUBLE("Capture Volume", AC97_REC_GAIN, 8, 0, 15, 0),
  66         SOC_SINGLE("Capture Switch", AC97_REC_GAIN, 15, 1, 1),
  67 };
  68
  69 static const char *wm9705_mic[] = {"Mic 1", "Mic 2"};
  70 static const char *wm9705_rec_sel[] = {"Mic", "CD", "NC", "NC",
  71         "Line", "Stereo Mix", "Mono Mix", "Phone"};
  72
  73 static SOC_ENUM_SINGLE_DECL(wm9705_enum_mic,
  74                             AC97_GENERAL_PURPOSE, 8, wm9705_mic);
  75 static SOC_ENUM_SINGLE_DECL(wm9705_enum_rec_l,
  76                             AC97_REC_SEL, 8, wm9705_rec_sel);
  77 static SOC_ENUM_SINGLE_DECL(wm9705_enum_rec_r,
  78                             AC97_REC_SEL, 0, wm9705_rec_sel);
  79
  80 /* Headphone Mixer */
  81 static const struct snd_kcontrol_new wm9705_hp_mixer_controls[] = {
  82         SOC_DAPM_SINGLE("PCBeep Playback Switch", AC97_PC_BEEP, 15, 1, 1),
  83         SOC_DAPM_SINGLE("CD Playback Switch", AC97_CD, 15, 1, 1),
  84         SOC_DAPM_SINGLE("Mic Playback Switch", AC97_MIC, 15, 1, 1),
  85         SOC_DAPM_SINGLE("Phone Playback Switch", AC97_PHONE, 15, 1, 1),
  86         SOC_DAPM_SINGLE("Line Playback Switch", AC97_LINE, 15, 1, 1),
  87 };
  88
  89 /* Mic source */
  90 static const struct snd_kcontrol_new wm9705_mic_src_controls =
  91         SOC_DAPM_ENUM("Route", wm9705_enum_mic);
  92
  93 /* Capture source */
  94 static const struct snd_kcontrol_new wm9705_capture_selectl_controls =
  95         SOC_DAPM_ENUM("Route", wm9705_enum_rec_l);
  96 static const struct snd_kcontrol_new wm9705_capture_selectr_controls =
  97         SOC_DAPM_ENUM("Route", wm9705_enum_rec_r);
  98
  99 /* DAPM widgets */
 100 static const struct snd_soc_dapm_widget wm9705_dapm_widgets[] = {
 101         SND_SOC_DAPM_MUX("Mic Source", SND_SOC_NOPM, 0, 0,
 102                 &wm9705_mic_src_controls),
 103         SND_SOC_DAPM_MUX("Left Capture Source", SND_SOC_NOPM, 0, 0,
 104                 &wm9705_capture_selectl_controls),
 105         SND_SOC_DAPM_MUX("Right Capture Source", SND_SOC_NOPM, 0, 0,
 106                 &wm9705_capture_selectr_controls),
 107         SND_SOC_DAPM_DAC("Left DAC", "Left HiFi Playback",
 108                 SND_SOC_NOPM, 0, 0),
 109         SND_SOC_DAPM_DAC("Right DAC", "Right HiFi Playback",
 110                 SND_SOC_NOPM, 0, 0),
 111         SND_SOC_DAPM_MIXER_NAMED_CTL("HP Mixer", SND_SOC_NOPM, 0, 0,
 112                 &wm9705_hp_mixer_controls[0],
 113                 ARRAY_SIZE(wm9705_hp_mixer_controls)),
 114         SND_SOC_DAPM_MIXER("Mono Mixer", SND_SOC_NOPM, 0, 0, NULL, 0),
 115         SND_SOC_DAPM_ADC("Left ADC", "Left HiFi Capture", SND_SOC_NOPM, 0, 0),
 116         SND_SOC_DAPM_ADC("Right ADC", "Right HiFi Capture", SND_SOC_NOPM, 0, 0),
 117         SND_SOC_DAPM_PGA("Headphone PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
 118         SND_SOC_DAPM_PGA("Speaker PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
 119         SND_SOC_DAPM_PGA("Line PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
 120         SND_SOC_DAPM_PGA("Line out PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
 121         SND_SOC_DAPM_PGA("Mono PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
 122         SND_SOC_DAPM_PGA("Phone PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
 123         SND_SOC_DAPM_PGA("Mic PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
 124         SND_SOC_DAPM_PGA("PCBEEP PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
 125         SND_SOC_DAPM_PGA("CD PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
 126         SND_SOC_DAPM_PGA("ADC PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
 127         SND_SOC_DAPM_OUTPUT("HPOUTL"),
 128         SND_SOC_DAPM_OUTPUT("HPOUTR"),
 129         SND_SOC_DAPM_OUTPUT("LOUT"),
 130         SND_SOC_DAPM_OUTPUT("ROUT"),
 131         SND_SOC_DAPM_OUTPUT("MONOOUT"),
 132         SND_SOC_DAPM_INPUT("PHONE"),
 133         SND_SOC_DAPM_INPUT("LINEINL"),
 134         SND_SOC_DAPM_INPUT("LINEINR"),
 135         SND_SOC_DAPM_INPUT("CDINL"),
 136         SND_SOC_DAPM_INPUT("CDINR"),
 137         SND_SOC_DAPM_INPUT("PCBEEP"),
 138         SND_SOC_DAPM_INPUT("MIC1"),
 139         SND_SOC_DAPM_INPUT("MIC2"),
 140 };
 141
 142 /* Audio map
 143  * WM9705 has no switches to disable the route from the inputs to the HP mixer
 144  * so in order to prevent active inputs from forcing the audio outputs to be
 145  * constantly enabled, we use the mutes on those inputs to simulate such
 146  * controls.
 147  */
 148 static const struct snd_soc_dapm_route wm9705_audio_map[] = {
 149         /* HP mixer */
 150         {"HP Mixer", "PCBeep Playback Switch", "PCBEEP PGA"},
 151         {"HP Mixer", "CD Playback Switch", "CD PGA"},
 152         {"HP Mixer", "Mic Playback Switch", "Mic PGA"},
 153         {"HP Mixer", "Phone Playback Switch", "Phone PGA"},
 154         {"HP Mixer", "Line Playback Switch", "Line PGA"},
 155         {"HP Mixer", NULL, "Left DAC"},
 156         {"HP Mixer", NULL, "Right DAC"},
 157
 158         /* mono mixer */
 159         {"Mono Mixer", NULL, "HP Mixer"},
 160
 161         /* outputs */
 162         {"Headphone PGA", NULL, "HP Mixer"},
 163         {"HPOUTL", NULL, "Headphone PGA"},
 164         {"HPOUTR", NULL, "Headphone PGA"},
 165         {"Line out PGA", NULL, "HP Mixer"},
 166         {"LOUT", NULL, "Line out PGA"},
 167         {"ROUT", NULL, "Line out PGA"},
 168         {"Mono PGA", NULL, "Mono Mixer"},
 169         {"MONOOUT", NULL, "Mono PGA"},
 170
 171         /* inputs */
 172         {"CD PGA", NULL, "CDINL"},
 173         {"CD PGA", NULL, "CDINR"},
 174         {"Line PGA", NULL, "LINEINL"},
 175         {"Line PGA", NULL, "LINEINR"},
 176         {"Phone PGA", NULL, "PHONE"},
 177         {"Mic Source", "Mic 1", "MIC1"},
 178         {"Mic Source", "Mic 2", "MIC2"},
 179         {"Mic PGA", NULL, "Mic Source"},
 180         {"PCBEEP PGA", NULL, "PCBEEP"},
 181
 182         /* Left capture selector */
 183         {"Left Capture Source", "Mic", "Mic Source"},
 184         {"Left Capture Source", "CD", "CDINL"},
 185         {"Left Capture Source", "Line", "LINEINL"},
 186         {"Left Capture Source", "Stereo Mix", "HP Mixer"},
 187         {"Left Capture Source", "Mono Mix", "HP Mixer"},
 188         {"Left Capture Source", "Phone", "PHONE"},
 189
 190         /* Right capture source */
 191         {"Right Capture Source", "Mic", "Mic Source"},
 192         {"Right Capture Source", "CD", "CDINR"},
 193         {"Right Capture Source", "Line", "LINEINR"},
 194         {"Right Capture Source", "Stereo Mix", "HP Mixer"},
 195         {"Right Capture Source", "Mono Mix", "HP Mixer"},
 196         {"Right Capture Source", "Phone", "PHONE"},
 197
 198         {"ADC PGA", NULL, "Left Capture Source"},
 199         {"ADC PGA", NULL, "Right Capture Source"},
 200
 201         /* ADC's */
 202         {"Left ADC",  NULL, "ADC PGA"},
 203         {"Right ADC", NULL, "ADC PGA"},
 204 };
 205
 206 /* We use a register cache to enhance read performance. */
 207 static unsigned int ac97_read(struct snd_soc_codec *codec, unsigned int reg)
 208 {
 209         struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec);
 210         u16 *cache = codec->reg_cache;
 211
 212         switch (reg) {
 213         case AC97_RESET:
 214         case AC97_VENDOR_ID1:
 215         case AC97_VENDOR_ID2:
 216                 return soc_ac97_ops->read(ac97, reg);
 217         default:
 218                 reg = reg >> 1;
 219
 220                 if (reg >= (ARRAY_SIZE(wm9705_reg)))
 221                         return -EIO;
 222
 223                 return cache[reg];
 224         }
 225 }
 226
 227 static int ac97_write(struct snd_soc_codec *codec, unsigned int reg,
 228         unsigned int val)
 229 {
 230         struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec);
 231         u16 *cache = codec->reg_cache;
 232
 233         soc_ac97_ops->write(ac97, reg, val);
 234         reg = reg >> 1;
 235         if (reg < (ARRAY_SIZE(wm9705_reg)))
 236                 cache[reg] = val;
 237
 238         return 0;
 239 }
 240
 241 static int ac97_prepare(struct snd_pcm_substream *substream,
 242                         struct snd_soc_dai *dai)
 243 {
 244         struct snd_soc_codec *codec = dai->codec;
 245         int reg;
 246         u16 vra;
 247
 248         vra = ac97_read(codec, AC97_EXTENDED_STATUS);
 249         ac97_write(codec, AC97_EXTENDED_STATUS, vra | 0x1);
 250
 251         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
 252                 reg = AC97_PCM_FRONT_DAC_RATE;
 253         else
 254                 reg = AC97_PCM_LR_ADC_RATE;
 255
 256         return ac97_write(codec, reg, substream->runtime->rate);
 257 }
 258
 259 #define WM9705_AC97_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 | \
 260                         SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 | \
 261                         SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | \
 262                         SNDRV_PCM_RATE_48000)
 263
 264 static const struct snd_soc_dai_ops wm9705_dai_ops = {
 265         .prepare        = ac97_prepare,
 266 };
 267
 268 static struct snd_soc_dai_driver wm9705_dai[] = {
 269         {
 270                 .name = "wm9705-hifi",
 271                 .playback = {
 272                         .stream_name = "HiFi Playback",
 273                         .channels_min = 1,
 274                         .channels_max = 2,
 275                         .rates = WM9705_AC97_RATES,
 276                         .formats = SND_SOC_STD_AC97_FMTS,
 277                 },
 278                 .capture = {
 279                         .stream_name = "HiFi Capture",
 280                         .channels_min = 1,
 281                         .channels_max = 2,
 282                         .rates = WM9705_AC97_RATES,
 283                         .formats = SND_SOC_STD_AC97_FMTS,
 284                 },
 285                 .ops = &wm9705_dai_ops,
 286         },
 287         {
 288                 .name = "wm9705-aux",
 289                 .playback = {
 290                         .stream_name = "Aux Playback",
 291                         .channels_min = 1,
 292                         .channels_max = 1,
 293                         .rates = WM9705_AC97_RATES,
 294                         .formats = SNDRV_PCM_FMTBIT_S16_LE,
 295                 },
 296         }
 297 };
 298
 299 #ifdef CONFIG_PM
 300 static int wm9705_soc_suspend(struct snd_soc_codec *codec)
 301 {
 302         struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec);
 303
 304         soc_ac97_ops->write(ac97, AC97_POWERDOWN, 0xffff);
 305
 306         return 0;
 307 }
 308
 309 static int wm9705_soc_resume(struct snd_soc_codec *codec)
 310 {
 311         struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec);
 312         int i, ret;
 313         u16 *cache = codec->reg_cache;
 314
 315         ret = snd_ac97_reset(ac97, true, WM9705_VENDOR_ID,
 316                 WM9705_VENDOR_ID_MASK);
 317         if (ret < 0)
 318                 return ret;
 319
 320         for (i = 2; i < ARRAY_SIZE(wm9705_reg) << 1; i += 2) {
 321                 soc_ac97_ops->write(ac97, i, cache[i>>1]);
 322         }
 323
 324         return 0;
 325 }
 326 #else
 327 #define wm9705_soc_suspend NULL
 328 #define wm9705_soc_resume NULL
 329 #endif
 330
 331 static int wm9705_soc_probe(struct snd_soc_codec *codec)
 332 {
 333         struct snd_ac97 *ac97;
 334
 335         ac97 = snd_soc_new_ac97_codec(codec, WM9705_VENDOR_ID,
 336                 WM9705_VENDOR_ID_MASK);
 337         if (IS_ERR(ac97)) {
 338                 dev_err(codec->dev, "Failed to register AC97 codec\n");
 339                 return PTR_ERR(ac97);
 340         }
 341
 342         snd_soc_codec_set_drvdata(codec, ac97);
 343
 344         return 0;
 345 }
 346
 347 static int wm9705_soc_remove(struct snd_soc_codec *codec)
 348 {
 349         struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec);
 350
 351         snd_soc_free_ac97_codec(ac97);
 352         return 0;
 353 }
 354
 355 static struct snd_soc_codec_driver soc_codec_dev_wm9705 = {
 356         .probe =        wm9705_soc_probe,
 357         .remove =       wm9705_soc_remove,
 358         .suspend =      wm9705_soc_suspend,
 359         .resume =       wm9705_soc_resume,
 360         .read = ac97_read,
 361         .write = ac97_write,
 362         .reg_cache_size = ARRAY_SIZE(wm9705_reg),
 363         .reg_word_size = sizeof(u16),
 364         .reg_cache_step = 2,
 365         .reg_cache_default = wm9705_reg,
 366
 367         .controls = wm9705_snd_ac97_controls,
 368         .num_controls = ARRAY_SIZE(wm9705_snd_ac97_controls),
 369         .dapm_widgets = wm9705_dapm_widgets,
 370         .num_dapm_widgets = ARRAY_SIZE(wm9705_dapm_widgets),
 371         .dapm_routes = wm9705_audio_map,
 372         .num_dapm_routes = ARRAY_SIZE(wm9705_audio_map),
 373 };
 374
 375 static int wm9705_probe(struct platform_device *pdev)
 376 {
 377         return snd_soc_register_codec(&pdev->dev,
 378                         &soc_codec_dev_wm9705, wm9705_dai, ARRAY_SIZE(wm9705_dai));
 379 }
 380
 381 static int wm9705_remove(struct platform_device *pdev)
 382 {
 383         snd_soc_unregister_codec(&pdev->dev);
 384         return 0;
 385 }
 386
 387 static struct platform_driver wm9705_codec_driver = {
 388         .driver = {
 389                         .name = "wm9705-codec",
 390         },
 391
 392         .probe = wm9705_probe,
 393         .remove = wm9705_remove,
 394 };
 395
 396 module_platform_driver(wm9705_codec_driver);
 397
 398 MODULE_DESCRIPTION("ASoC WM9705 driver");
 399 MODULE_AUTHOR("Ian Molton");
 400 MODULE_LICENSE("GPL v2");