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