sound/soc/samsung/speyside_wm8962.c

   1 /*
   2  * Speyside with WM8962 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/wm8962.h"
  18
  19 static int speyside_wm8962_set_bias_level(struct snd_soc_card *card,
  20                                           struct snd_soc_dapm_context *dapm,
  21                                           enum snd_soc_bias_level level)
  22 {
  23         struct snd_soc_dai *codec_dai = card->rtd[0].codec_dai;
  24         int ret;
  25
  26         if (dapm->dev != codec_dai->dev)
  27                 return 0;
  28
  29         switch (level) {
  30         case SND_SOC_BIAS_PREPARE:
  31                 if (dapm->bias_level == SND_SOC_BIAS_STANDBY) {
  32                         ret = snd_soc_dai_set_pll(codec_dai, WM8962_FLL,
  33                                                   WM8962_FLL_MCLK, 32768,
  34                                                   44100 * 256);
  35                         if (ret < 0)
  36                                 pr_err("Failed to start FLL: %d\n", ret);
  37
  38                         ret = snd_soc_dai_set_sysclk(codec_dai,
  39                                                      WM8962_SYSCLK_FLL,
  40                                                      44100 * 256,
  41                                                      SND_SOC_CLOCK_IN);
  42                         if (ret < 0) {
  43                                 pr_err("Failed to set SYSCLK: %d\n", ret);
  44                                 return ret;
  45                         }
  46                 }
  47                 break;
  48
  49         default:
  50                 break;
  51         }
  52
  53         return 0;
  54 }
  55
  56 static int speyside_wm8962_set_bias_level_post(struct snd_soc_card *card,
  57                                                struct snd_soc_dapm_context *dapm,
  58                                                enum snd_soc_bias_level level)
  59 {
  60         struct snd_soc_dai *codec_dai = card->rtd[0].codec_dai;
  61         int ret;
  62
  63         if (dapm->dev != codec_dai->dev)
  64                 return 0;
  65
  66         switch (level) {
  67         case SND_SOC_BIAS_STANDBY:
  68                 ret = snd_soc_dai_set_sysclk(codec_dai, WM8962_SYSCLK_MCLK,
  69                                              32768, SND_SOC_CLOCK_IN);
  70                 if (ret < 0) {
  71                         pr_err("Failed to switch away from FLL: %d\n", ret);
  72                         return ret;
  73                 }
  74
  75                 ret = snd_soc_dai_set_pll(codec_dai, WM8962_FLL,
  76                                           0, 0, 0);
  77                 if (ret < 0) {
  78                         pr_err("Failed to stop FLL: %d\n", ret);
  79                         return ret;
  80                 }
  81                 break;
  82
  83         default:
  84                 break;
  85         }
  86
  87         dapm->bias_level = level;
  88
  89         return 0;
  90 }
  91
  92 static int speyside_wm8962_hw_params(struct snd_pcm_substream *substream,
  93                               struct snd_pcm_hw_params *params)
  94 {
  95         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  96         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
  97         struct snd_soc_dai *codec_dai = rtd->codec_dai;
  98         int ret;
  99
 100         ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S
 101                                          | SND_SOC_DAIFMT_NB_NF
 102                                          | SND_SOC_DAIFMT_CBM_CFM);
 103         if (ret < 0)
 104                 return ret;
 105
 106         ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S
 107                                          | SND_SOC_DAIFMT_NB_NF
 108                                          | SND_SOC_DAIFMT_CBM_CFM);
 109         if (ret < 0)
 110                 return ret;
 111
 112         return 0;
 113 }
 114
 115 static struct snd_soc_ops speyside_wm8962_ops = {
 116         .hw_params = speyside_wm8962_hw_params,
 117 };
 118
 119 static struct snd_soc_dai_link speyside_wm8962_dai[] = {
 120         {
 121                 .name = "CPU",
 122                 .stream_name = "CPU",
 123                 .cpu_dai_name = "samsung-i2s.0",
 124                 .codec_dai_name = "wm8962",
 125                 .platform_name = "samsung-audio",
 126                 .codec_name = "wm8962.1-001a",
 127                 .ops = &speyside_wm8962_ops,
 128         },
 129 };
 130
 131 static const struct snd_kcontrol_new controls[] = {
 132         SOC_DAPM_PIN_SWITCH("Main Speaker"),
 133 };
 134
 135 static struct snd_soc_dapm_widget widgets[] = {
 136         SND_SOC_DAPM_HP("Headphone", NULL),
 137         SND_SOC_DAPM_MIC("Headset Mic", NULL),
 138
 139         SND_SOC_DAPM_MIC("DMIC", NULL),
 140
 141         SND_SOC_DAPM_SPK("Main Speaker", NULL),
 142 };
 143
 144 static struct snd_soc_dapm_route audio_paths[] = {
 145         { "Headphone", NULL, "HPOUTL" },
 146         { "Headphone", NULL, "HPOUTR" },
 147
 148         { "Main Speaker", NULL, "SPKOUTL" },
 149         { "Main Speaker", NULL, "SPKOUTR" },
 150
 151         { "MICBIAS", NULL, "Headset Mic" },
 152         { "IN4L", NULL, "MICBIAS" },
 153         { "IN4R", NULL, "MICBIAS" },
 154
 155         { "MICBIAS", NULL, "DMIC" },
 156         { "DMICDAT", NULL, "MICBIAS" },
 157 };
 158
 159 static struct snd_soc_jack speyside_wm8962_headset;
 160
 161 /* Headset jack detection DAPM pins */
 162 static struct snd_soc_jack_pin speyside_wm8962_headset_pins[] = {
 163         {
 164                 .pin = "Headset Mic",
 165                 .mask = SND_JACK_MICROPHONE,
 166         },
 167         {
 168                 .pin = "Headphone",
 169                 .mask = SND_JACK_MICROPHONE,
 170         },
 171 };
 172
 173 static int speyside_wm8962_late_probe(struct snd_soc_card *card)
 174 {
 175         struct snd_soc_codec *codec = card->rtd[0].codec;
 176         struct snd_soc_dai *codec_dai = card->rtd[0].codec_dai;
 177         int ret;
 178
 179         ret = snd_soc_dai_set_sysclk(codec_dai, WM8962_SYSCLK_MCLK,
 180                                      32768, SND_SOC_CLOCK_IN);
 181         if (ret < 0)
 182                 return ret;
 183
 184         ret = snd_soc_jack_new(codec, "Headset",
 185                                SND_JACK_HEADSET | SND_JACK_BTN_0,
 186                                &speyside_wm8962_headset);
 187         if (ret)
 188                 return ret;
 189
 190         ret = snd_soc_jack_add_pins(&speyside_wm8962_headset,
 191                                     ARRAY_SIZE(speyside_wm8962_headset_pins),
 192                                     speyside_wm8962_headset_pins);
 193         if (ret)
 194                 return ret;
 195
 196         wm8962_mic_detect(codec, &speyside_wm8962_headset);
 197
 198         return 0;
 199 }
 200
 201 static struct snd_soc_card speyside_wm8962 = {
 202         .name = "Speyside WM8962",
 203         .dai_link = speyside_wm8962_dai,
 204         .num_links = ARRAY_SIZE(speyside_wm8962_dai),
 205
 206         .set_bias_level = speyside_wm8962_set_bias_level,
 207         .set_bias_level_post = speyside_wm8962_set_bias_level_post,
 208
 209         .controls = controls,
 210         .num_controls = ARRAY_SIZE(controls),
 211         .dapm_widgets = widgets,
 212         .num_dapm_widgets = ARRAY_SIZE(widgets),
 213         .dapm_routes = audio_paths,
 214         .num_dapm_routes = ARRAY_SIZE(audio_paths),
 215
 216         .late_probe = speyside_wm8962_late_probe,
 217 };
 218
 219 static __devinit int speyside_wm8962_probe(struct platform_device *pdev)
 220 {
 221         struct snd_soc_card *card = &speyside_wm8962;
 222         int ret;
 223
 224         card->dev = &pdev->dev;
 225
 226         ret = snd_soc_register_card(card);
 227         if (ret) {
 228                 dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
 229                         ret);
 230                 return ret;
 231         }
 232
 233         return 0;
 234 }
 235
 236 static int __devexit speyside_wm8962_remove(struct platform_device *pdev)
 237 {
 238         struct snd_soc_card *card = platform_get_drvdata(pdev);
 239
 240         snd_soc_unregister_card(card);
 241
 242         return 0;
 243 }
 244
 245 static struct platform_driver speyside_wm8962_driver = {
 246         .driver = {
 247                 .name = "speyside-wm8962",
 248                 .owner = THIS_MODULE,
 249                 .pm = &snd_soc_pm_ops,
 250         },
 251         .probe = speyside_wm8962_probe,
 252         .remove = __devexit_p(speyside_wm8962_remove),
 253 };
 254
 255 static int __init speyside_wm8962_audio_init(void)
 256 {
 257         return platform_driver_register(&speyside_wm8962_driver);
 258 }
 259 module_init(speyside_wm8962_audio_init);
 260
 261 static void __exit speyside_wm8962_audio_exit(void)
 262 {
 263         platform_driver_unregister(&speyside_wm8962_driver);
 264 }
 265 module_exit(speyside_wm8962_audio_exit);
 266
 267 MODULE_DESCRIPTION("Speyside WM8962 audio support");
 268 MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
 269 MODULE_LICENSE("GPL");
 270 MODULE_ALIAS("platform:speyside-wm8962");