sound/soc/samsung/smdk_wm8994.c

   1 /*
   2  *  smdk_wm8994.c
   3  *
   4  *  This program is free software; you can redistribute  it and/or modify it
   5  *  under  the terms of  the GNU General  Public License as published by the
   6  *  Free Software Foundation;  either version 2 of the  License, or (at your
   7  *  option) any later version.
   8  */
   9
  10 #include "../codecs/wm8994.h"
  11 #include <sound/pcm_params.h>
  12
  13  /*
  14   * Default CFG switch settings to use this driver:
  15   *     SMDKV310: CFG5-1000, CFG7-111111
  16   */
  17
  18  /*
  19   * Configure audio route as :-
  20   * $ amixer sset 'DAC1' on,on
  21   * $ amixer sset 'Right Headphone Mux' 'DAC'
  22   * $ amixer sset 'Left Headphone Mux' 'DAC'
  23   * $ amixer sset 'DAC1R Mixer AIF1.1' on
  24   * $ amixer sset 'DAC1L Mixer AIF1.1' on
  25   * $ amixer sset 'IN2L' on
  26   * $ amixer sset 'IN2L PGA IN2LN' on
  27   * $ amixer sset 'MIXINL IN2L' on
  28   * $ amixer sset 'AIF1ADC1L Mixer ADC/DMIC' on
  29   * $ amixer sset 'IN2R' on
  30   * $ amixer sset 'IN2R PGA IN2RN' on
  31   * $ amixer sset 'MIXINR IN2R' on
  32   * $ amixer sset 'AIF1ADC1R Mixer ADC/DMIC' on
  33   */
  34
  35 /* SMDK has a 16.934MHZ crystal attached to WM8994 */
  36 #define SMDK_WM8994_FREQ 16934000
  37
  38 static int smdk_hw_params(struct snd_pcm_substream *substream,
  39         struct snd_pcm_hw_params *params)
  40 {
  41         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  42         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
  43         struct snd_soc_dai *codec_dai = rtd->codec_dai;
  44         unsigned int pll_out;
  45         int ret;
  46
  47         /* AIF1CLK should be >=3MHz for optimal performance */
  48         if (params_format(params) == SNDRV_PCM_FORMAT_S24_LE)
  49                 pll_out = params_rate(params) * 384;
  50         else if (params_rate(params) == 8000 || params_rate(params) == 11025)
  51                 pll_out = params_rate(params) * 512;
  52         else
  53                 pll_out = params_rate(params) * 256;
  54
  55         ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S
  56                                          | SND_SOC_DAIFMT_NB_NF
  57                                          | SND_SOC_DAIFMT_CBM_CFM);
  58         if (ret < 0)
  59                 return ret;
  60
  61         ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S
  62                                          | SND_SOC_DAIFMT_NB_NF
  63                                          | SND_SOC_DAIFMT_CBM_CFM);
  64         if (ret < 0)
  65                 return ret;
  66
  67         ret = snd_soc_dai_set_pll(codec_dai, WM8994_FLL1, WM8994_FLL_SRC_MCLK1,
  68                                         SMDK_WM8994_FREQ, pll_out);
  69         if (ret < 0)
  70                 return ret;
  71
  72         ret = snd_soc_dai_set_sysclk(codec_dai, WM8994_SYSCLK_FLL1,
  73                                         pll_out, SND_SOC_CLOCK_IN);
  74         if (ret < 0)
  75                 return ret;
  76
  77         return 0;
  78 }
  79
  80 /*
  81  * SMDK WM8994 DAI operations.
  82  */
  83 static struct snd_soc_ops smdk_ops = {
  84         .hw_params = smdk_hw_params,
  85 };
  86
  87 static int smdk_wm8994_init_paiftx(struct snd_soc_pcm_runtime *rtd)
  88 {
  89         struct snd_soc_codec *codec = rtd->codec;
  90         struct snd_soc_dapm_context *dapm = &codec->dapm;
  91
  92         /* HeadPhone */
  93         snd_soc_dapm_enable_pin(dapm, "HPOUT1R");
  94         snd_soc_dapm_enable_pin(dapm, "HPOUT1L");
  95
  96         /* MicIn */
  97         snd_soc_dapm_enable_pin(dapm, "IN1LN");
  98         snd_soc_dapm_enable_pin(dapm, "IN1RN");
  99
 100         /* LineIn */
 101         snd_soc_dapm_enable_pin(dapm, "IN2LN");
 102         snd_soc_dapm_enable_pin(dapm, "IN2RN");
 103
 104         /* Other pins NC */
 105         snd_soc_dapm_nc_pin(dapm, "HPOUT2P");
 106         snd_soc_dapm_nc_pin(dapm, "HPOUT2N");
 107         snd_soc_dapm_nc_pin(dapm, "SPKOUTLN");
 108         snd_soc_dapm_nc_pin(dapm, "SPKOUTLP");
 109         snd_soc_dapm_nc_pin(dapm, "SPKOUTRP");
 110         snd_soc_dapm_nc_pin(dapm, "SPKOUTRN");
 111         snd_soc_dapm_nc_pin(dapm, "LINEOUT1N");
 112         snd_soc_dapm_nc_pin(dapm, "LINEOUT1P");
 113         snd_soc_dapm_nc_pin(dapm, "LINEOUT2N");
 114         snd_soc_dapm_nc_pin(dapm, "LINEOUT2P");
 115         snd_soc_dapm_nc_pin(dapm, "IN1LP");
 116         snd_soc_dapm_nc_pin(dapm, "IN2LP:VXRN");
 117         snd_soc_dapm_nc_pin(dapm, "IN1RP");
 118         snd_soc_dapm_nc_pin(dapm, "IN2RP:VXRP");
 119
 120         return 0;
 121 }
 122
 123 static struct snd_soc_dai_link smdk_dai[] = {
 124         { /* Primary DAI i/f */
 125                 .name = "WM8994 AIF1",
 126                 .stream_name = "Pri_Dai",
 127                 .cpu_dai_name = "samsung-i2s.0",
 128                 .codec_dai_name = "wm8994-aif1",
 129                 .platform_name = "samsung-audio",
 130                 .codec_name = "wm8994-codec",
 131                 .init = smdk_wm8994_init_paiftx,
 132                 .ops = &smdk_ops,
 133         }, { /* Sec_Fifo Playback i/f */
 134                 .name = "Sec_FIFO TX",
 135                 .stream_name = "Sec_Dai",
 136                 .cpu_dai_name = "samsung-i2s.4",
 137                 .codec_dai_name = "wm8994-aif1",
 138                 .platform_name = "samsung-audio",
 139                 .codec_name = "wm8994-codec",
 140                 .ops = &smdk_ops,
 141         },
 142 };
 143
 144 static struct snd_soc_card smdk = {
 145         .name = "SMDK-I2S",
 146         .dai_link = smdk_dai,
 147         .num_links = ARRAY_SIZE(smdk_dai),
 148 };
 149
 150 static struct platform_device *smdk_snd_device;
 151
 152 static int __init smdk_audio_init(void)
 153 {
 154         int ret;
 155
 156         smdk_snd_device = platform_device_alloc("soc-audio", -1);
 157         if (!smdk_snd_device)
 158                 return -ENOMEM;
 159
 160         platform_set_drvdata(smdk_snd_device, &smdk);
 161
 162         ret = platform_device_add(smdk_snd_device);
 163         if (ret)
 164                 platform_device_put(smdk_snd_device);
 165
 166         return ret;
 167 }
 168 module_init(smdk_audio_init);
 169
 170 static void __exit smdk_audio_exit(void)
 171 {
 172         platform_device_unregister(smdk_snd_device);
 173 }
 174 module_exit(smdk_audio_exit);
 175
 176 MODULE_DESCRIPTION("ALSA SoC SMDK WM8994");
 177 MODULE_LICENSE("GPL");