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
  17 #include "../codecs/wm8915.h"
  18 #include "../codecs/wm9081.h"
  19
  20 #define WM8915_HPSEL_GPIO 214
  21
  22 static int speyside_set_bias_level(struct snd_soc_card *card,
  23                                    enum snd_soc_bias_level level)
  24 {
  25         struct snd_soc_dai *codec_dai = card->rtd[0].codec_dai;
  26         int ret;
  27
  28         switch (level) {
  29         case SND_SOC_BIAS_STANDBY:
  30                 ret = snd_soc_dai_set_sysclk(codec_dai, WM8915_SYSCLK_MCLK1,
  31                                              32768, SND_SOC_CLOCK_IN);
  32                 if (ret < 0)
  33                         return ret;
  34
  35                 ret = snd_soc_dai_set_pll(codec_dai, WM8915_FLL_MCLK1,
  36                                           0, 0, 0);
  37                 if (ret < 0) {
  38                         pr_err("Failed to stop FLL\n");
  39                         return ret;
  40                 }
  41
  42         default:
  43                 break;
  44         }
  45
  46         return 0;
  47 }
  48
  49 static int speyside_hw_params(struct snd_pcm_substream *substream,
  50                               struct snd_pcm_hw_params *params)
  51 {
  52         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  53         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
  54         struct snd_soc_dai *codec_dai = rtd->codec_dai;
  55         int ret;
  56
  57         ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S
  58                                          | SND_SOC_DAIFMT_NB_NF
  59                                          | SND_SOC_DAIFMT_CBM_CFM);
  60         if (ret < 0)
  61                 return ret;
  62
  63         ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S
  64                                          | SND_SOC_DAIFMT_NB_NF
  65                                          | SND_SOC_DAIFMT_CBM_CFM);
  66         if (ret < 0)
  67                 return ret;
  68
  69         ret = snd_soc_dai_set_pll(codec_dai, 0, WM8915_FLL_MCLK1,
  70                                   32768, 256 * 48000);
  71         if (ret < 0)
  72                 return ret;
  73
  74         ret = snd_soc_dai_set_sysclk(codec_dai, WM8915_SYSCLK_FLL,
  75                                      256 * 48000, SND_SOC_CLOCK_IN);
  76         if (ret < 0)
  77                 return ret;
  78
  79         return 0;
  80 }
  81
  82 static struct snd_soc_ops speyside_ops = {
  83         .hw_params = speyside_hw_params,
  84 };
  85
  86 static struct snd_soc_jack speyside_headset;
  87
  88 /* Headset jack detection DAPM pins */
  89 static struct snd_soc_jack_pin speyside_headset_pins[] = {
  90         {
  91                 .pin = "Headset Mic",
  92                 .mask = SND_JACK_MICROPHONE,
  93         },
  94         {
  95                 .pin = "Headphone",
  96                 .mask = SND_JACK_HEADPHONE,
  97         },
  98 };
  99
 100 /* Default the headphone selection to active high */
 101 static int speyside_jack_polarity;
 102
 103 static int speyside_get_micbias(struct snd_soc_dapm_widget *source,
 104                                 struct snd_soc_dapm_widget *sink)
 105 {
 106         if (speyside_jack_polarity && (strcmp(source->name, "MICB1") == 0))
 107                 return 1;
 108         if (!speyside_jack_polarity && (strcmp(source->name, "MICB2") == 0))
 109                 return 1;
 110
 111         return 0;
 112 }
 113
 114 static void speyside_set_polarity(struct snd_soc_codec *codec,
 115                                   int polarity)
 116 {
 117         speyside_jack_polarity = !polarity;
 118         gpio_direction_output(WM8915_HPSEL_GPIO, speyside_jack_polarity);
 119
 120         /* Re-run DAPM to make sure we're using the correct mic bias */
 121         snd_soc_dapm_sync(&codec->dapm);
 122 }
 123
 124 static int speyside_wm8915_init(struct snd_soc_pcm_runtime *rtd)
 125 {
 126         struct snd_soc_dai *dai = rtd->codec_dai;
 127         struct snd_soc_codec *codec = rtd->codec;
 128         int ret;
 129
 130         ret = snd_soc_dai_set_sysclk(dai, WM8915_SYSCLK_MCLK1, 32768, 0);
 131         if (ret < 0)
 132                 return ret;
 133
 134         ret = gpio_request(WM8915_HPSEL_GPIO, "HP_SEL");
 135         if (ret != 0)
 136                 pr_err("Failed to request HP_SEL GPIO: %d\n", ret);
 137         gpio_direction_output(WM8915_HPSEL_GPIO, speyside_jack_polarity);
 138
 139         ret = snd_soc_jack_new(codec, "Headset",
 140                                SND_JACK_HEADSET | SND_JACK_BTN_0,
 141                                &speyside_headset);
 142         if (ret)
 143                 return ret;
 144
 145         ret = snd_soc_jack_add_pins(&speyside_headset,
 146                                     ARRAY_SIZE(speyside_headset_pins),
 147                                     speyside_headset_pins);
 148         if (ret)
 149                 return ret;
 150
 151         wm8915_detect(codec, &speyside_headset, speyside_set_polarity);
 152
 153         return 0;
 154 }
 155
 156 static struct snd_soc_dai_link speyside_dai[] = {
 157         {
 158                 .name = "CPU",
 159                 .stream_name = "CPU",
 160                 .cpu_dai_name = "samsung-i2s.0",
 161                 .codec_dai_name = "wm8915-aif1",
 162                 .platform_name = "samsung-audio",
 163                 .codec_name = "wm8915.1-001a",
 164                 .init = speyside_wm8915_init,
 165                 .ops = &speyside_ops,
 166         },
 167 };
 168
 169 static int speyside_wm9081_init(struct snd_soc_dapm_context *dapm)
 170 {
 171         snd_soc_dapm_nc_pin(dapm, "LINEOUT");
 172
 173         /* At any time the WM9081 is active it will have this clock */
 174         return snd_soc_codec_set_sysclk(dapm->codec, WM9081_SYSCLK_MCLK,
 175                                         48000 * 256, 0);
 176 }
 177
 178 static struct snd_soc_aux_dev speyside_aux_dev[] = {
 179         {
 180                 .name = "wm9081",
 181                 .codec_name = "wm9081.1-006c",
 182                 .init = speyside_wm9081_init,
 183         },
 184 };
 185
 186 static struct snd_soc_codec_conf speyside_codec_conf[] = {
 187         {
 188                 .dev_name = "wm9081.1-006c",
 189                 .name_prefix = "Sub",
 190         },
 191 };
 192
 193 static const struct snd_kcontrol_new controls[] = {
 194         SOC_DAPM_PIN_SWITCH("Main Speaker"),
 195         SOC_DAPM_PIN_SWITCH("Main DMIC"),
 196         SOC_DAPM_PIN_SWITCH("Main AMIC"),
 197 };
 198
 199 static struct snd_soc_dapm_widget widgets[] = {
 200         SND_SOC_DAPM_HP("Headphone", NULL),
 201         SND_SOC_DAPM_MIC("Headset Mic", NULL),
 202
 203         SND_SOC_DAPM_SPK("Main Speaker", NULL),
 204
 205         SND_SOC_DAPM_MIC("Main AMIC", NULL),
 206         SND_SOC_DAPM_MIC("Main DMIC", NULL),
 207 };
 208
 209 static struct snd_soc_dapm_route audio_paths[] = {
 210         { "IN1RN", NULL, "MICB1" },
 211         { "IN1RP", NULL, "MICB1" },
 212         { "IN1RN", NULL, "MICB2" },
 213         { "IN1RP", NULL, "MICB2" },
 214         { "MICB1", NULL, "Headset Mic", speyside_get_micbias },
 215         { "MICB2", NULL, "Headset Mic", speyside_get_micbias },
 216
 217         { "IN1LP", NULL, "MICB2" },
 218         { "IN1RN", NULL, "MICB1" },
 219         { "MICB2", NULL, "Main AMIC" },
 220
 221         { "DMIC1DAT", NULL, "MICB1" },
 222         { "DMIC2DAT", NULL, "MICB1" },
 223         { "MICB1", NULL, "Main DMIC" },
 224
 225         { "Headphone", NULL, "HPOUT1L" },
 226         { "Headphone", NULL, "HPOUT1R" },
 227
 228         { "Sub IN1", NULL, "HPOUT2L" },
 229         { "Sub IN2", NULL, "HPOUT2R" },
 230
 231         { "Main Speaker", NULL, "Sub SPKN" },
 232         { "Main Speaker", NULL, "Sub SPKP" },
 233         { "Main Speaker", NULL, "SPKDAT" },
 234 };
 235
 236 static struct snd_soc_card speyside = {
 237         .name = "Speyside",
 238         .dai_link = speyside_dai,
 239         .num_links = ARRAY_SIZE(speyside_dai),
 240         .aux_dev = speyside_aux_dev,
 241         .num_aux_devs = ARRAY_SIZE(speyside_aux_dev),
 242         .codec_conf = speyside_codec_conf,
 243         .num_configs = ARRAY_SIZE(speyside_codec_conf),
 244
 245         .set_bias_level = speyside_set_bias_level,
 246
 247         .controls = controls,
 248         .num_controls = ARRAY_SIZE(controls),
 249         .dapm_widgets = widgets,
 250         .num_dapm_widgets = ARRAY_SIZE(widgets),
 251         .dapm_routes = audio_paths,
 252         .num_dapm_routes = ARRAY_SIZE(audio_paths),
 253 };
 254
 255 static __devinit int speyside_probe(struct platform_device *pdev)
 256 {
 257         struct snd_soc_card *card = &speyside;
 258         int ret;
 259
 260         card->dev = &pdev->dev;
 261
 262         ret = snd_soc_register_card(card);
 263         if (ret) {
 264                 dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
 265                         ret);
 266                 return ret;
 267         }
 268
 269         return 0;
 270 }
 271
 272 static int __devexit speyside_remove(struct platform_device *pdev)
 273 {
 274         struct snd_soc_card *card = platform_get_drvdata(pdev);
 275
 276         snd_soc_unregister_card(card);
 277
 278         return 0;
 279 }
 280
 281 static struct platform_driver speyside_driver = {
 282         .driver = {
 283                 .name = "speyside",
 284                 .owner = THIS_MODULE,
 285                 .pm = &snd_soc_pm_ops,
 286         },
 287         .probe = speyside_probe,
 288         .remove = __devexit_p(speyside_remove),
 289 };
 290
 291 static int __init speyside_audio_init(void)
 292 {
 293         return platform_driver_register(&speyside_driver);
 294 }
 295 module_init(speyside_audio_init);
 296
 297 static void __exit speyside_audio_exit(void)
 298 {
 299         platform_driver_unregister(&speyside_driver);
 300 }
 301 module_exit(speyside_audio_exit);
 302
 303 MODULE_DESCRIPTION("Speyside audio support");
 304 MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
 305 MODULE_LICENSE("GPL");
 306 MODULE_ALIAS("platform:speyside");