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