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 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 static int wm9705_add_widgets(struct snd_soc_codec *codec)
 204 {
 205         struct snd_soc_dapm_context *dapm = &codec->dapm;
 206
 207         snd_soc_dapm_new_controls(dapm, wm9705_dapm_widgets,
 208                                         ARRAY_SIZE(wm9705_dapm_widgets));
 209         snd_soc_dapm_add_routes(dapm, audio_map, ARRAY_SIZE(audio_map));
 210
 211         return 0;
 212 }
 213
 214 /* We use a register cache to enhance read performance. */
 215 static unsigned int ac97_read(struct snd_soc_codec *codec, unsigned int reg)
 216 {
 217         u16 *cache = codec->reg_cache;
 218
 219         switch (reg) {
 220         case AC97_RESET:
 221         case AC97_VENDOR_ID1:
 222         case AC97_VENDOR_ID2:
 223                 return soc_ac97_ops.read(codec->ac97, reg);
 224         default:
 225                 reg = reg >> 1;
 226
 227                 if (reg >= (ARRAY_SIZE(wm9705_reg)))
 228                         return -EIO;
 229
 230                 return cache[reg];
 231         }
 232 }
 233
 234 static int ac97_write(struct snd_soc_codec *codec, unsigned int reg,
 235         unsigned int val)
 236 {
 237         u16 *cache = codec->reg_cache;
 238
 239         soc_ac97_ops.write(codec->ac97, reg, val);
 240         reg = reg >> 1;
 241         if (reg < (ARRAY_SIZE(wm9705_reg)))
 242                 cache[reg] = val;
 243
 244         return 0;
 245 }
 246
 247 static int ac97_prepare(struct snd_pcm_substream *substream,
 248                         struct snd_soc_dai *dai)
 249 {
 250         struct snd_pcm_runtime *runtime = substream->runtime;
 251         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 252         struct snd_soc_codec *codec = rtd->codec;
 253         int reg;
 254         u16 vra;
 255
 256         vra = ac97_read(codec, AC97_EXTENDED_STATUS);
 257         ac97_write(codec, AC97_EXTENDED_STATUS, vra | 0x1);
 258
 259         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
 260                 reg = AC97_PCM_FRONT_DAC_RATE;
 261         else
 262                 reg = AC97_PCM_LR_ADC_RATE;
 263
 264         return ac97_write(codec, reg, runtime->rate);
 265 }
 266
 267 #define WM9705_AC97_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 | \
 268                         SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 | \
 269                         SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | \
 270                         SNDRV_PCM_RATE_48000)
 271
 272 static struct snd_soc_dai_ops wm9705_dai_ops = {
 273         .prepare        = ac97_prepare,
 274 };
 275
 276 static struct snd_soc_dai_driver wm9705_dai[] = {
 277         {
 278                 .name = "wm9705-hifi",
 279                 .ac97_control = 1,
 280                 .playback = {
 281                         .stream_name = "HiFi Playback",
 282                         .channels_min = 1,
 283                         .channels_max = 2,
 284                         .rates = WM9705_AC97_RATES,
 285                         .formats = SND_SOC_STD_AC97_FMTS,
 286                 },
 287                 .capture = {
 288                         .stream_name = "HiFi Capture",
 289                         .channels_min = 1,
 290                         .channels_max = 2,
 291                         .rates = WM9705_AC97_RATES,
 292                         .formats = SND_SOC_STD_AC97_FMTS,
 293                 },
 294                 .ops = &wm9705_dai_ops,
 295         },
 296         {
 297                 .name = "wm9705-aux",
 298                 .playback = {
 299                         .stream_name = "Aux Playback",
 300                         .channels_min = 1,
 301                         .channels_max = 1,
 302                         .rates = WM9705_AC97_RATES,
 303                         .formats = SNDRV_PCM_FMTBIT_S16_LE,
 304                 },
 305         }
 306 };
 307
 308 static int wm9705_reset(struct snd_soc_codec *codec)
 309 {
 310         if (soc_ac97_ops.reset) {
 311                 soc_ac97_ops.reset(codec->ac97);
 312                 if (ac97_read(codec, 0) == wm9705_reg[0])
 313                         return 0; /* Success */
 314         }
 315
 316         return -EIO;
 317 }
 318
 319 #ifdef CONFIG_PM
 320 static int wm9705_soc_suspend(struct snd_soc_codec *codec, pm_message_t msg)
 321 {
 322         soc_ac97_ops.write(codec->ac97, AC97_POWERDOWN, 0xffff);
 323
 324         return 0;
 325 }
 326
 327 static int wm9705_soc_resume(struct snd_soc_codec *codec)
 328 {
 329         int i, ret;
 330         u16 *cache = codec->reg_cache;
 331
 332         ret = wm9705_reset(codec);
 333         if (ret < 0) {
 334                 printk(KERN_ERR "could not reset AC97 codec\n");
 335                 return ret;
 336         }
 337
 338         for (i = 2; i < ARRAY_SIZE(wm9705_reg) << 1; i += 2) {
 339                 soc_ac97_ops.write(codec->ac97, i, cache[i>>1]);
 340         }
 341
 342         return 0;
 343 }
 344 #else
 345 #define wm9705_soc_suspend NULL
 346 #define wm9705_soc_resume NULL
 347 #endif
 348
 349 static int wm9705_soc_probe(struct snd_soc_codec *codec)
 350 {
 351         int ret = 0;
 352
 353         printk(KERN_INFO "WM9705 SoC Audio Codec\n");
 354
 355         ret = snd_soc_new_ac97_codec(codec, &soc_ac97_ops, 0);
 356         if (ret < 0) {
 357                 printk(KERN_ERR "wm9705: failed to register AC97 codec\n");
 358                 return ret;
 359         }
 360
 361         ret = wm9705_reset(codec);
 362         if (ret)
 363                 goto reset_err;
 364
 365         snd_soc_add_controls(codec, wm9705_snd_ac97_controls,
 366                                 ARRAY_SIZE(wm9705_snd_ac97_controls));
 367         wm9705_add_widgets(codec);
 368
 369         return 0;
 370
 371 reset_err:
 372         snd_soc_free_ac97_codec(codec);
 373         return ret;
 374 }
 375
 376 static int wm9705_soc_remove(struct snd_soc_codec *codec)
 377 {
 378         snd_soc_free_ac97_codec(codec);
 379         return 0;
 380 }
 381
 382 static struct snd_soc_codec_driver soc_codec_dev_wm9705 = {
 383         .probe =        wm9705_soc_probe,
 384         .remove =       wm9705_soc_remove,
 385         .suspend =      wm9705_soc_suspend,
 386         .resume =       wm9705_soc_resume,
 387         .read = ac97_read,
 388         .write = ac97_write,
 389         .reg_cache_size = ARRAY_SIZE(wm9705_reg),
 390         .reg_word_size = sizeof(u16),
 391         .reg_cache_step = 2,
 392         .reg_cache_default = wm9705_reg,
 393 };
 394
 395 static __devinit int wm9705_probe(struct platform_device *pdev)
 396 {
 397         return snd_soc_register_codec(&pdev->dev,
 398                         &soc_codec_dev_wm9705, wm9705_dai, ARRAY_SIZE(wm9705_dai));
 399 }
 400
 401 static int __devexit wm9705_remove(struct platform_device *pdev)
 402 {
 403         snd_soc_unregister_codec(&pdev->dev);
 404         return 0;
 405 }
 406
 407 static struct platform_driver wm9705_codec_driver = {
 408         .driver = {
 409                         .name = "wm9705-codec",
 410                         .owner = THIS_MODULE,
 411         },
 412
 413         .probe = wm9705_probe,
 414         .remove = __devexit_p(wm9705_remove),
 415 };
 416
 417 static int __init wm9705_init(void)
 418 {
 419         return platform_driver_register(&wm9705_codec_driver);
 420 }
 421 module_init(wm9705_init);
 422
 423 static void __exit wm9705_exit(void)
 424 {
 425         platform_driver_unregister(&wm9705_codec_driver);
 426 }
 427 module_exit(wm9705_exit);
 428
 429 MODULE_DESCRIPTION("ASoC WM9705 driver");
 430 MODULE_AUTHOR("Ian Molton");
 431 MODULE_LICENSE("GPL v2");