sound/soc/samsung/speyside.c

   1 /*
   2  * Speyside audio support
   3  *
   4  * Copyright 2011 Wolfson Microelectronics
   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;  either version 2 of the  License, or (at your
   9  * option) any later version.
  10  */
  11
  12 #include <sound/soc.h>
  13 #include <sound/soc-dapm.h>
  14 #include <sound/jack.h>
  15 #include <linux/gpio.h>
  16 #include <linux/module.h>
  17
  18 #include "../codecs/wm8996.h"
  19 #include "../codecs/wm9081.h"
  20
  21 #define WM8996_HPSEL_GPIO 214
  22
  23 static int speyside_set_bias_level(struct snd_soc_card *card,
  24                                    struct snd_soc_dapm_context *dapm,
  25                                    enum snd_soc_bias_level level)
  26 {
  27         struct snd_soc_dai *codec_dai = card->rtd[0].codec_dai;
  28         int ret;
  29
  30         if (dapm->dev != codec_dai->dev)
  31                 return 0;
  32
  33         switch (level) {
  34         case SND_SOC_BIAS_STANDBY:
  35                 ret = snd_soc_dai_set_sysclk(codec_dai, WM8996_SYSCLK_MCLK2,
  36                                              32768, SND_SOC_CLOCK_IN);
  37                 if (ret < 0)
  38                         return ret;
  39
  40                 ret = snd_soc_dai_set_pll(codec_dai, WM8996_FLL_MCLK2,
  41                                           0, 0, 0);
  42                 if (ret < 0) {
  43                         pr_err("Failed to stop FLL\n");
  44                         return ret;
  45                 }
  46                 break;
  47
  48         default:
  49                 break;
  50         }
  51
  52         return 0;
  53 }
  54
  55 static int speyside_set_bias_level_post(struct snd_soc_card *card,
  56                                         struct snd_soc_dapm_context *dapm,
  57                                         enum snd_soc_bias_level level)
  58 {
  59         struct snd_soc_dai *codec_dai = card->rtd[0].codec_dai;
  60         int ret;
  61
  62         if (dapm->dev != codec_dai->dev)
  63                 return 0;
  64
  65         switch (level) {
  66         case SND_SOC_BIAS_PREPARE:
  67                 if (card->dapm.bias_level == SND_SOC_BIAS_STANDBY) {
  68                         ret = snd_soc_dai_set_pll(codec_dai, 0,
  69                                                   WM8996_FLL_MCLK2,
  70                                                   32768, 48000 * 256);
  71                         if (ret < 0) {
  72                                 pr_err("Failed to start FLL\n");
  73                                 return ret;
  74                         }
  75
  76                         ret = snd_soc_dai_set_sysclk(codec_dai,
  77                                                      WM8996_SYSCLK_FLL,
  78                                                      48000 * 256,
  79                                                      SND_SOC_CLOCK_IN);
  80                         if (ret < 0)
  81                                 return ret;
  82                 }
  83                 break;
  84
  85         default:
  86                 break;
  87         }
  88
  89         card->dapm.bias_level = level;
  90
  91         return 0;
  92 }
  93
  94 static int speyside_hw_params(struct snd_pcm_substream *substream,
  95                               struct snd_pcm_hw_params *params)
  96 {
  97         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  98         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
  99         struct snd_soc_dai *codec_dai = rtd->codec_dai;
 100         int ret;
 101
 102         ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S
 103                                          | SND_SOC_DAIFMT_NB_NF
 104                                          | SND_SOC_DAIFMT_CBM_CFM);
 105         if (ret < 0)
 106                 return ret;
 107
 108         ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S
 109                                          | SND_SOC_DAIFMT_NB_NF
 110                                          | SND_SOC_DAIFMT_CBM_CFM);
 111         if (ret < 0)
 112                 return ret;
 113
 114         return 0;
 115 }
 116
 117 static struct snd_soc_ops speyside_ops = {
 118         .hw_params = speyside_hw_params,
 119 };
 120
 121 static struct snd_soc_jack speyside_headset;
 122
 123 /* Headset jack detection DAPM pins */
 124 static struct snd_soc_jack_pin speyside_headset_pins[] = {
 125         {
 126                 .pin = "Headset Mic",
 127                 .mask = SND_JACK_MICROPHONE,
 128         },
 129 };
 130
 131 /* Default the headphone selection to active high */
 132 static int speyside_jack_polarity;
 133
 134 static int speyside_get_micbias(struct snd_soc_dapm_widget *source,
 135                                 struct snd_soc_dapm_widget *sink)
 136 {
 137         if (speyside_jack_polarity && (strcmp(source->name, "MICB1") == 0))
 138                 return 1;
 139         if (!speyside_jack_polarity && (strcmp(source->name, "MICB2") == 0))
 140                 return 1;
 141
 142         return 0;
 143 }
 144
 145 static void speyside_set_polarity(struct snd_soc_codec *codec,
 146                                   int polarity)
 147 {
 148         speyside_jack_polarity = !polarity;
 149         gpio_direction_output(WM8996_HPSEL_GPIO, speyside_jack_polarity);
 150
 151         /* Re-run DAPM to make sure we're using the correct mic bias */
 152         snd_soc_dapm_sync(&codec->dapm);
 153 }
 154
 155 static int speyside_wm8996_init(struct snd_soc_pcm_runtime *rtd)
 156 {
 157         struct snd_soc_dai *dai = rtd->codec_dai;
 158         struct snd_soc_codec *codec = rtd->codec;
 159         int ret;
 160
 161         ret = snd_soc_dai_set_sysclk(dai, WM8996_SYSCLK_MCLK2, 32768, 0);
 162         if (ret < 0)
 163                 return ret;
 164
 165         ret = gpio_request(WM8996_HPSEL_GPIO, "HP_SEL");
 166         if (ret != 0)
 167                 pr_err("Failed to request HP_SEL GPIO: %d\n", ret);
 168         gpio_direction_output(WM8996_HPSEL_GPIO, speyside_jack_polarity);
 169
 170         ret = snd_soc_jack_new(codec, "Headset",
 171                                SND_JACK_LINEOUT | SND_JACK_HEADSET |
 172                                SND_JACK_BTN_0,
 173                                &speyside_headset);
 174         if (ret)
 175                 return ret;
 176
 177         ret = snd_soc_jack_add_pins(&speyside_headset,
 178                                     ARRAY_SIZE(speyside_headset_pins),
 179                                     speyside_headset_pins);
 180         if (ret)
 181                 return ret;
 182
 183         wm8996_detect(codec, &speyside_headset, speyside_set_polarity);
 184
 185         return 0;
 186 }
 187
 188 static int speyside_late_probe(struct snd_soc_card *card)
 189 {
 190         snd_soc_dapm_ignore_suspend(&card->dapm, "Headphone");
 191         snd_soc_dapm_ignore_suspend(&card->dapm, "Headset Mic");
 192         snd_soc_dapm_ignore_suspend(&card->dapm, "Main AMIC");
 193         snd_soc_dapm_ignore_suspend(&card->dapm, "Main DMIC");
 194         snd_soc_dapm_ignore_suspend(&card->dapm, "Main Speaker");
 195         snd_soc_dapm_ignore_suspend(&card->dapm, "WM1250 Output");
 196         snd_soc_dapm_ignore_suspend(&card->dapm, "WM1250 Input");
 197
 198         return 0;
 199 }
 200
 201 static struct snd_soc_dai_link speyside_dai[] = {
 202         {
 203                 .name = "CPU",
 204                 .stream_name = "CPU",
 205                 .cpu_dai_name = "samsung-i2s.0",
 206                 .codec_dai_name = "wm8996-aif1",
 207                 .platform_name = "samsung-audio",
 208                 .codec_name = "wm8996.1-001a",
 209                 .init = speyside_wm8996_init,
 210                 .ops = &speyside_ops,
 211         },
 212         {
 213                 .name = "Baseband",
 214                 .stream_name = "Baseband",
 215                 .cpu_dai_name = "wm8996-aif2",
 216                 .codec_dai_name = "wm1250-ev1",
 217                 .codec_name = "wm1250-ev1.1-0027",
 218                 .ops = &speyside_ops,
 219                 .ignore_suspend = 1,
 220         },
 221 };
 222
 223 static int speyside_wm9081_init(struct snd_soc_dapm_context *dapm)
 224 {
 225         snd_soc_dapm_nc_pin(dapm, "LINEOUT");
 226
 227         /* At any time the WM9081 is active it will have this clock */
 228         return snd_soc_codec_set_sysclk(dapm->codec, WM9081_SYSCLK_MCLK, 0,
 229                                         48000 * 256, 0);
 230 }
 231
 232 static struct snd_soc_aux_dev speyside_aux_dev[] = {
 233         {
 234                 .name = "wm9081",
 235                 .codec_name = "wm9081.1-006c",
 236                 .init = speyside_wm9081_init,
 237         },
 238 };
 239
 240 static struct snd_soc_codec_conf speyside_codec_conf[] = {
 241         {
 242                 .dev_name = "wm9081.1-006c",
 243                 .name_prefix = "Sub",
 244         },
 245 };
 246
 247 static const struct snd_kcontrol_new controls[] = {
 248         SOC_DAPM_PIN_SWITCH("Main Speaker"),
 249         SOC_DAPM_PIN_SWITCH("Main DMIC"),
 250         SOC_DAPM_PIN_SWITCH("Main AMIC"),
 251         SOC_DAPM_PIN_SWITCH("WM1250 Input"),
 252         SOC_DAPM_PIN_SWITCH("WM1250 Output"),
 253         SOC_DAPM_PIN_SWITCH("Headphone"),
 254 };
 255
 256 static struct snd_soc_dapm_widget widgets[] = {
 257         SND_SOC_DAPM_HP("Headphone", NULL),
 258         SND_SOC_DAPM_MIC("Headset Mic", NULL),
 259
 260         SND_SOC_DAPM_SPK("Main Speaker", NULL),
 261
 262         SND_SOC_DAPM_MIC("Main AMIC", NULL),
 263         SND_SOC_DAPM_MIC("Main DMIC", NULL),
 264 };
 265
 266 static struct snd_soc_dapm_route audio_paths[] = {
 267         { "IN1RN", NULL, "MICB1" },
 268         { "IN1RP", NULL, "MICB1" },
 269         { "IN1RN", NULL, "MICB2" },
 270         { "IN1RP", NULL, "MICB2" },
 271         { "MICB1", NULL, "Headset Mic", speyside_get_micbias },
 272         { "MICB2", NULL, "Headset Mic", speyside_get_micbias },
 273
 274         { "IN1LP", NULL, "MICB2" },
 275         { "IN1RN", NULL, "MICB1" },
 276         { "MICB2", NULL, "Main AMIC" },
 277
 278         { "DMIC1DAT", NULL, "MICB1" },
 279         { "DMIC2DAT", NULL, "MICB1" },
 280         { "MICB1", NULL, "Main DMIC" },
 281
 282         { "Headphone", NULL, "HPOUT1L" },
 283         { "Headphone", NULL, "HPOUT1R" },
 284
 285         { "Sub IN1", NULL, "HPOUT2L" },
 286         { "Sub IN2", NULL, "HPOUT2R" },
 287
 288         { "Main Speaker", NULL, "Sub SPKN" },
 289         { "Main Speaker", NULL, "Sub SPKP" },
 290         { "Main Speaker", NULL, "SPKDAT" },
 291 };
 292
 293 static struct snd_soc_card speyside = {
 294         .name = "Speyside",
 295         .dai_link = speyside_dai,
 296         .num_links = ARRAY_SIZE(speyside_dai),
 297         .aux_dev = speyside_aux_dev,
 298         .num_aux_devs = ARRAY_SIZE(speyside_aux_dev),
 299         .codec_conf = speyside_codec_conf,
 300         .num_configs = ARRAY_SIZE(speyside_codec_conf),
 301
 302         .set_bias_level = speyside_set_bias_level,
 303         .set_bias_level_post = speyside_set_bias_level_post,
 304
 305         .controls = controls,
 306         .num_controls = ARRAY_SIZE(controls),
 307         .dapm_widgets = widgets,
 308         .num_dapm_widgets = ARRAY_SIZE(widgets),
 309         .dapm_routes = audio_paths,
 310         .num_dapm_routes = ARRAY_SIZE(audio_paths),
 311
 312         .late_probe = speyside_late_probe,
 313 };
 314
 315 static __devinit int speyside_probe(struct platform_device *pdev)
 316 {
 317         struct snd_soc_card *card = &speyside;
 318         int ret;
 319
 320         card->dev = &pdev->dev;
 321
 322         ret = snd_soc_register_card(card);
 323         if (ret) {
 324                 dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
 325                         ret);
 326                 return ret;
 327         }
 328
 329         return 0;
 330 }
 331
 332 static int __devexit speyside_remove(struct platform_device *pdev)
 333 {
 334         struct snd_soc_card *card = platform_get_drvdata(pdev);
 335
 336         snd_soc_unregister_card(card);
 337
 338         return 0;
 339 }
 340
 341 static struct platform_driver speyside_driver = {
 342         .driver = {
 343                 .name = "speyside",
 344                 .owner = THIS_MODULE,
 345                 .pm = &snd_soc_pm_ops,
 346         },
 347         .probe = speyside_probe,
 348         .remove = __devexit_p(speyside_remove),
 349 };
 350
 351 static int __init speyside_audio_init(void)
 352 {
 353         return platform_driver_register(&speyside_driver);
 354 }
 355 module_init(speyside_audio_init);
 356
 357 static void __exit speyside_audio_exit(void)
 358 {
 359         platform_driver_unregister(&speyside_driver);
 360 }
 361 module_exit(speyside_audio_exit);
 362
 363 MODULE_DESCRIPTION("Speyside audio support");
 364 MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
 365 MODULE_LICENSE("GPL");
 366 MODULE_ALIAS("platform:speyside");