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