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 /*
  26  * WM9705 register cache
  27  */
  28 static const u16 wm9705_reg[] = {
  29         0x6150, 0x8000, 0x8000, 0x8000, /* 0x0  */
  30         0x0000, 0x8000, 0x8008, 0x8008, /* 0x8  */
  31         0x8808, 0x8808, 0x8808, 0x8808, /* 0x10 */
  32         0x8808, 0x0000, 0x8000, 0x0000, /* 0x18 */
  33         0x0000, 0x0000, 0x0000, 0x000f, /* 0x20 */
  34         0x0605, 0x0000, 0xbb80, 0x0000, /* 0x28 */
  35         0x0000, 0xbb80, 0x0000, 0x0000, /* 0x30 */
  36         0x0000, 0x2000, 0x0000, 0x0000, /* 0x38 */
  37         0x0000, 0x0000, 0x0000, 0x0000, /* 0x40 */
  38         0x0000, 0x0000, 0x0000, 0x0000, /* 0x48 */
  39         0x0000, 0x0000, 0x0000, 0x0000, /* 0x50 */
  40         0x0000, 0x0000, 0x0000, 0x0000, /* 0x58 */
  41         0x0000, 0x0000, 0x0000, 0x0000, /* 0x60 */
  42         0x0000, 0x0000, 0x0000, 0x0000, /* 0x68 */
  43         0x0000, 0x0808, 0x0000, 0x0006, /* 0x70 */
  44         0x0000, 0x0000, 0x574d, 0x4c05, /* 0x78 */
  45 };
  46
  47 static const struct snd_kcontrol_new wm9705_snd_ac97_controls[] = {
  48         SOC_DOUBLE("Master Playback Volume", AC97_MASTER, 8, 0, 31, 1),
  49         SOC_SINGLE("Master Playback Switch", AC97_MASTER, 15, 1, 1),
  50         SOC_DOUBLE("Headphone Playback Volume", AC97_HEADPHONE, 8, 0, 31, 1),
  51         SOC_SINGLE("Headphone Playback Switch", AC97_HEADPHONE, 15, 1, 1),
  52         SOC_DOUBLE("PCM Playback Volume", AC97_PCM, 8, 0, 31, 1),
  53         SOC_SINGLE("PCM Playback Switch", AC97_PCM, 15, 1, 1),
  54         SOC_SINGLE("Mono Playback Volume", AC97_MASTER_MONO, 0, 31, 1),
  55         SOC_SINGLE("Mono Playback Switch", AC97_MASTER_MONO, 15, 1, 1),
  56         SOC_SINGLE("PCBeep Playback Volume", AC97_PC_BEEP, 1, 15, 1),
  57         SOC_SINGLE("Phone Playback Volume", AC97_PHONE, 0, 31, 1),
  58         SOC_DOUBLE("Line Playback Volume", AC97_LINE, 8, 0, 31, 1),
  59         SOC_DOUBLE("CD Playback Volume", AC97_CD, 8, 0, 31, 1),
  60         SOC_SINGLE("Mic Playback Volume", AC97_MIC, 0, 31, 1),
  61         SOC_SINGLE("Mic 20dB Boost Switch", AC97_MIC, 6, 1, 0),
  62         SOC_DOUBLE("Capture Volume", AC97_REC_GAIN, 8, 0, 15, 0),
  63         SOC_SINGLE("Capture Switch", AC97_REC_GAIN, 15, 1, 1),
  64 };
  65
  66 static const char *wm9705_mic[] = {"Mic 1", "Mic 2"};
  67 static const char *wm9705_rec_sel[] = {"Mic", "CD", "NC", "NC",
  68         "Line", "Stereo Mix", "Mono Mix", "Phone"};
  69
  70 static const struct soc_enum wm9705_enum_mic =
  71         SOC_ENUM_SINGLE(AC97_GENERAL_PURPOSE, 8, 2, wm9705_mic);
  72 static const struct soc_enum wm9705_enum_rec_l =
  73         SOC_ENUM_SINGLE(AC97_REC_SEL, 8, 8, wm9705_rec_sel);
  74 static const struct soc_enum wm9705_enum_rec_r =
  75         SOC_ENUM_SINGLE(AC97_REC_SEL, 0, 8, wm9705_rec_sel);
  76
  77 /* Headphone Mixer */
  78 static const struct snd_kcontrol_new wm9705_hp_mixer_controls[] = {
  79         SOC_DAPM_SINGLE("PCBeep Playback Switch", AC97_PC_BEEP, 15, 1, 1),
  80         SOC_DAPM_SINGLE("CD Playback Switch", AC97_CD, 15, 1, 1),
  81         SOC_DAPM_SINGLE("Mic Playback Switch", AC97_MIC, 15, 1, 1),
  82         SOC_DAPM_SINGLE("Phone Playback Switch", AC97_PHONE, 15, 1, 1),
  83         SOC_DAPM_SINGLE("Line Playback Switch", AC97_LINE, 15, 1, 1),
  84 };
  85
  86 /* Mic source */
  87 static const struct snd_kcontrol_new wm9705_mic_src_controls =
  88         SOC_DAPM_ENUM("Route", wm9705_enum_mic);
  89
  90 /* Capture source */
  91 static const struct snd_kcontrol_new wm9705_capture_selectl_controls =
  92         SOC_DAPM_ENUM("Route", wm9705_enum_rec_l);
  93 static const struct snd_kcontrol_new wm9705_capture_selectr_controls =
  94         SOC_DAPM_ENUM("Route", wm9705_enum_rec_r);
  95
  96 /* DAPM widgets */
  97 static const struct snd_soc_dapm_widget wm9705_dapm_widgets[] = {
  98         SND_SOC_DAPM_MUX("Mic Source", SND_SOC_NOPM, 0, 0,
  99                 &wm9705_mic_src_controls),
 100         SND_SOC_DAPM_MUX("Left Capture Source", SND_SOC_NOPM, 0, 0,
 101                 &wm9705_capture_selectl_controls),
 102         SND_SOC_DAPM_MUX("Right Capture Source", SND_SOC_NOPM, 0, 0,
 103                 &wm9705_capture_selectr_controls),
 104         SND_SOC_DAPM_DAC("Left DAC", "Left HiFi Playback",
 105                 SND_SOC_NOPM, 0, 0),
 106         SND_SOC_DAPM_DAC("Right DAC", "Right HiFi Playback",
 107                 SND_SOC_NOPM, 0, 0),
 108         SND_SOC_DAPM_MIXER_NAMED_CTL("HP Mixer", SND_SOC_NOPM, 0, 0,
 109                 &wm9705_hp_mixer_controls[0],
 110                 ARRAY_SIZE(wm9705_hp_mixer_controls)),
 111         SND_SOC_DAPM_MIXER("Mono Mixer", SND_SOC_NOPM, 0, 0, NULL, 0),
 112         SND_SOC_DAPM_ADC("Left ADC", "Left HiFi Capture", SND_SOC_NOPM, 0, 0),
 113         SND_SOC_DAPM_ADC("Right ADC", "Right HiFi Capture", SND_SOC_NOPM, 0, 0),
 114         SND_SOC_DAPM_PGA("Headphone PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
 115         SND_SOC_DAPM_PGA("Speaker PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
 116         SND_SOC_DAPM_PGA("Line PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
 117         SND_SOC_DAPM_PGA("Line out PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
 118         SND_SOC_DAPM_PGA("Mono PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
 119         SND_SOC_DAPM_PGA("Phone PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
 120         SND_SOC_DAPM_PGA("Mic PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
 121         SND_SOC_DAPM_PGA("PCBEEP PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
 122         SND_SOC_DAPM_PGA("CD PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
 123         SND_SOC_DAPM_PGA("ADC PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
 124         SND_SOC_DAPM_OUTPUT("HPOUTL"),
 125         SND_SOC_DAPM_OUTPUT("HPOUTR"),
 126         SND_SOC_DAPM_OUTPUT("LOUT"),
 127         SND_SOC_DAPM_OUTPUT("ROUT"),
 128         SND_SOC_DAPM_OUTPUT("MONOOUT"),
 129         SND_SOC_DAPM_INPUT("PHONE"),
 130         SND_SOC_DAPM_INPUT("LINEINL"),
 131         SND_SOC_DAPM_INPUT("LINEINR"),
 132         SND_SOC_DAPM_INPUT("CDINL"),
 133         SND_SOC_DAPM_INPUT("CDINR"),
 134         SND_SOC_DAPM_INPUT("PCBEEP"),
 135         SND_SOC_DAPM_INPUT("MIC1"),
 136         SND_SOC_DAPM_INPUT("MIC2"),
 137 };
 138
 139 /* Audio map
 140  * WM9705 has no switches to disable the route from the inputs to the HP mixer
 141  * so in order to prevent active inputs from forcing the audio outputs to be
 142  * constantly enabled, we use the mutes on those inputs to simulate such
 143  * controls.
 144  */
 145 static const struct snd_soc_dapm_route wm9705_audio_map[] = {
 146         /* HP mixer */
 147         {"HP Mixer", "PCBeep Playback Switch", "PCBEEP PGA"},
 148         {"HP Mixer", "CD Playback Switch", "CD PGA"},
 149         {"HP Mixer", "Mic Playback Switch", "Mic PGA"},
 150         {"HP Mixer", "Phone Playback Switch", "Phone PGA"},
 151         {"HP Mixer", "Line Playback Switch", "Line PGA"},
 152         {"HP Mixer", NULL, "Left DAC"},
 153         {"HP Mixer", NULL, "Right DAC"},
 154
 155         /* mono mixer */
 156         {"Mono Mixer", NULL, "HP Mixer"},
 157
 158         /* outputs */
 159         {"Headphone PGA", NULL, "HP Mixer"},
 160         {"HPOUTL", NULL, "Headphone PGA"},
 161         {"HPOUTR", NULL, "Headphone PGA"},
 162         {"Line out PGA", NULL, "HP Mixer"},
 163         {"LOUT", NULL, "Line out PGA"},
 164         {"ROUT", NULL, "Line out PGA"},
 165         {"Mono PGA", NULL, "Mono Mixer"},
 166         {"MONOOUT", NULL, "Mono PGA"},
 167
 168         /* inputs */
 169         {"CD PGA", NULL, "CDINL"},
 170         {"CD PGA", NULL, "CDINR"},
 171         {"Line PGA", NULL, "LINEINL"},
 172         {"Line PGA", NULL, "LINEINR"},
 173         {"Phone PGA", NULL, "PHONE"},
 174         {"Mic Source", "Mic 1", "MIC1"},
 175         {"Mic Source", "Mic 2", "MIC2"},
 176         {"Mic PGA", NULL, "Mic Source"},
 177         {"PCBEEP PGA", NULL, "PCBEEP"},
 178
 179         /* Left capture selector */
 180         {"Left Capture Source", "Mic", "Mic Source"},
 181         {"Left Capture Source", "CD", "CDINL"},
 182         {"Left Capture Source", "Line", "LINEINL"},
 183         {"Left Capture Source", "Stereo Mix", "HP Mixer"},
 184         {"Left Capture Source", "Mono Mix", "HP Mixer"},
 185         {"Left Capture Source", "Phone", "PHONE"},
 186
 187         /* Right capture source */
 188         {"Right Capture Source", "Mic", "Mic Source"},
 189         {"Right Capture Source", "CD", "CDINR"},
 190         {"Right Capture Source", "Line", "LINEINR"},
 191         {"Right Capture Source", "Stereo Mix", "HP Mixer"},
 192         {"Right Capture Source", "Mono Mix", "HP Mixer"},
 193         {"Right Capture Source", "Phone", "PHONE"},
 194
 195         {"ADC PGA", NULL, "Left Capture Source"},
 196         {"ADC PGA", NULL, "Right Capture Source"},
 197
 198         /* ADC's */
 199         {"Left ADC",  NULL, "ADC PGA"},
 200         {"Right ADC", NULL, "ADC PGA"},
 201 };
 202
 203 /* We use a register cache to enhance read performance. */
 204 static unsigned int ac97_read(struct snd_soc_codec *codec, unsigned int reg)
 205 {
 206         u16 *cache = codec->reg_cache;
 207
 208         switch (reg) {
 209         case AC97_RESET:
 210         case AC97_VENDOR_ID1:
 211         case AC97_VENDOR_ID2:
 212                 return soc_ac97_ops.read(codec->ac97, reg);
 213         default:
 214                 reg = reg >> 1;
 215
 216                 if (reg >= (ARRAY_SIZE(wm9705_reg)))
 217                         return -EIO;
 218
 219                 return cache[reg];
 220         }
 221 }
 222
 223 static int ac97_write(struct snd_soc_codec *codec, unsigned int reg,
 224         unsigned int val)
 225 {
 226         u16 *cache = codec->reg_cache;
 227
 228         soc_ac97_ops.write(codec->ac97, reg, val);
 229         reg = reg >> 1;
 230         if (reg < (ARRAY_SIZE(wm9705_reg)))
 231                 cache[reg] = val;
 232
 233         return 0;
 234 }
 235
 236 static int ac97_prepare(struct snd_pcm_substream *substream,
 237                         struct snd_soc_dai *dai)
 238 {
 239         struct snd_pcm_runtime *runtime = substream->runtime;
 240         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 241         struct snd_soc_codec *codec = rtd->codec;
 242         int reg;
 243         u16 vra;
 244
 245         vra = ac97_read(codec, AC97_EXTENDED_STATUS);
 246         ac97_write(codec, AC97_EXTENDED_STATUS, vra | 0x1);
 247
 248         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
 249                 reg = AC97_PCM_FRONT_DAC_RATE;
 250         else
 251                 reg = AC97_PCM_LR_ADC_RATE;
 252
 253         return ac97_write(codec, reg, runtime->rate);
 254 }
 255
 256 #define WM9705_AC97_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 | \
 257                         SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 | \
 258                         SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | \
 259                         SNDRV_PCM_RATE_48000)
 260
 261 static const struct snd_soc_dai_ops wm9705_dai_ops = {
 262         .prepare        = ac97_prepare,
 263 };
 264
 265 static struct snd_soc_dai_driver wm9705_dai[] = {
 266         {
 267                 .name = "wm9705-hifi",
 268                 .ac97_control = 1,
 269                 .playback = {
 270                         .stream_name = "HiFi Playback",
 271                         .channels_min = 1,
 272                         .channels_max = 2,
 273                         .rates = WM9705_AC97_RATES,
 274                         .formats = SND_SOC_STD_AC97_FMTS,
 275                 },
 276                 .capture = {
 277                         .stream_name = "HiFi Capture",
 278                         .channels_min = 1,
 279                         .channels_max = 2,
 280                         .rates = WM9705_AC97_RATES,
 281                         .formats = SND_SOC_STD_AC97_FMTS,
 282                 },
 283                 .ops = &wm9705_dai_ops,
 284         },
 285         {
 286                 .name = "wm9705-aux",
 287                 .playback = {
 288                         .stream_name = "Aux Playback",
 289                         .channels_min = 1,
 290                         .channels_max = 1,
 291                         .rates = WM9705_AC97_RATES,
 292                         .formats = SNDRV_PCM_FMTBIT_S16_LE,
 293                 },
 294         }
 295 };
 296
 297 static int wm9705_reset(struct snd_soc_codec *codec)
 298 {
 299         if (soc_ac97_ops.reset) {
 300                 soc_ac97_ops.reset(codec->ac97);
 301                 if (ac97_read(codec, 0) == wm9705_reg[0])
 302                         return 0; /* Success */
 303         }
 304
 305         return -EIO;
 306 }
 307
 308 #ifdef CONFIG_PM
 309 static int wm9705_soc_suspend(struct snd_soc_codec *codec)
 310 {
 311         soc_ac97_ops.write(codec->ac97, AC97_POWERDOWN, 0xffff);
 312
 313         return 0;
 314 }
 315
 316 static int wm9705_soc_resume(struct snd_soc_codec *codec)
 317 {
 318         int i, ret;
 319         u16 *cache = codec->reg_cache;
 320
 321         ret = wm9705_reset(codec);
 322         if (ret < 0) {
 323                 printk(KERN_ERR "could not reset AC97 codec\n");
 324                 return ret;
 325         }
 326
 327         for (i = 2; i < ARRAY_SIZE(wm9705_reg) << 1; i += 2) {
 328                 soc_ac97_ops.write(codec->ac97, i, cache[i>>1]);
 329         }
 330
 331         return 0;
 332 }
 333 #else
 334 #define wm9705_soc_suspend NULL
 335 #define wm9705_soc_resume NULL
 336 #endif
 337
 338 static int wm9705_soc_probe(struct snd_soc_codec *codec)
 339 {
 340         int ret = 0;
 341
 342         printk(KERN_INFO "WM9705 SoC Audio Codec\n");
 343
 344         ret = snd_soc_new_ac97_codec(codec, &soc_ac97_ops, 0);
 345         if (ret < 0) {
 346                 printk(KERN_ERR "wm9705: failed to register AC97 codec\n");
 347                 return ret;
 348         }
 349
 350         ret = wm9705_reset(codec);
 351         if (ret)
 352                 goto reset_err;
 353
 354         snd_soc_add_controls(codec, wm9705_snd_ac97_controls,
 355                                 ARRAY_SIZE(wm9705_snd_ac97_controls));
 356
 357         return 0;
 358
 359 reset_err:
 360         snd_soc_free_ac97_codec(codec);
 361         return ret;
 362 }
 363
 364 static int wm9705_soc_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_wm9705 = {
 371         .probe =        wm9705_soc_probe,
 372         .remove =       wm9705_soc_remove,
 373         .suspend =      wm9705_soc_suspend,
 374         .resume =       wm9705_soc_resume,
 375         .read = ac97_read,
 376         .write = ac97_write,
 377         .reg_cache_size = ARRAY_SIZE(wm9705_reg),
 378         .reg_word_size = sizeof(u16),
 379         .reg_cache_step = 2,
 380         .reg_cache_default = wm9705_reg,
 381         .dapm_widgets = wm9705_dapm_widgets,
 382         .num_dapm_widgets = ARRAY_SIZE(wm9705_dapm_widgets),
 383         .dapm_routes = wm9705_audio_map,
 384         .num_dapm_routes = ARRAY_SIZE(wm9705_audio_map),
 385 };
 386
 387 static __devinit int wm9705_probe(struct platform_device *pdev)
 388 {
 389         return snd_soc_register_codec(&pdev->dev,
 390                         &soc_codec_dev_wm9705, wm9705_dai, ARRAY_SIZE(wm9705_dai));
 391 }
 392
 393 static int __devexit wm9705_remove(struct platform_device *pdev)
 394 {
 395         snd_soc_unregister_codec(&pdev->dev);
 396         return 0;
 397 }
 398
 399 static struct platform_driver wm9705_codec_driver = {
 400         .driver = {
 401                         .name = "wm9705-codec",
 402                         .owner = THIS_MODULE,
 403         },
 404
 405         .probe = wm9705_probe,
 406         .remove = __devexit_p(wm9705_remove),
 407 };
 408
 409 module_platform_driver(wm9705_codec_driver);
 410
 411 MODULE_DESCRIPTION("ASoC WM9705 driver");
 412 MODULE_AUTHOR("Ian Molton");
 413 MODULE_LICENSE("GPL v2");