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 #include <linux/of.h>
  14
  15  /*
  16   * Default CFG switch settings to use this driver:
  17   *     SMDKV310: CFG5-1000, CFG7-111111
  18   */
  19
  20  /*
  21   * Configure audio route as :-
  22   * $ amixer sset 'DAC1' on,on
  23   * $ amixer sset 'Right Headphone Mux' 'DAC'
  24   * $ amixer sset 'Left Headphone Mux' 'DAC'
  25   * $ amixer sset 'DAC1R Mixer AIF1.1' on
  26   * $ amixer sset 'DAC1L Mixer AIF1.1' on
  27   * $ amixer sset 'IN2L' on
  28   * $ amixer sset 'IN2L PGA IN2LN' on
  29   * $ amixer sset 'MIXINL IN2L' on
  30   * $ amixer sset 'AIF1ADC1L Mixer ADC/DMIC' on
  31   * $ amixer sset 'IN2R' on
  32   * $ amixer sset 'IN2R PGA IN2RN' on
  33   * $ amixer sset 'MIXINR IN2R' on
  34   * $ amixer sset 'AIF1ADC1R Mixer ADC/DMIC' on
  35   */
  36
  37 /* SMDK has a 16.934MHZ crystal attached to WM8994 */
  38 #define SMDK_WM8994_FREQ 16934000
  39
  40 static int smdk_hw_params(struct snd_pcm_substream *substream,
  41         struct snd_pcm_hw_params *params)
  42 {
  43         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  44         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
  45         struct snd_soc_dai *codec_dai = rtd->codec_dai;
  46         unsigned int pll_out;
  47         int ret;
  48
  49         /* AIF1CLK should be >=3MHz for optimal performance */
  50         if (params_format(params) == SNDRV_PCM_FORMAT_S24_LE)
  51                 pll_out = params_rate(params) * 384;
  52         else if (params_rate(params) == 8000 || params_rate(params) == 11025)
  53                 pll_out = params_rate(params) * 512;
  54         else
  55                 pll_out = params_rate(params) * 256;
  56
  57         ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S
  58                                          | SND_SOC_DAIFMT_NB_NF
  59                                          | SND_SOC_DAIFMT_CBM_CFM);
  60         if (ret < 0)
  61                 return ret;
  62
  63         ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S
  64                                          | SND_SOC_DAIFMT_NB_NF
  65                                          | SND_SOC_DAIFMT_CBM_CFM);
  66         if (ret < 0)
  67                 return ret;
  68
  69         ret = snd_soc_dai_set_pll(codec_dai, WM8994_FLL1, WM8994_FLL_SRC_MCLK1,
  70                                         SMDK_WM8994_FREQ, pll_out);
  71         if (ret < 0)
  72                 return ret;
  73
  74         ret = snd_soc_dai_set_sysclk(codec_dai, WM8994_SYSCLK_FLL1,
  75                                         pll_out, SND_SOC_CLOCK_IN);
  76         if (ret < 0)
  77                 return ret;
  78
  79         return 0;
  80 }
  81
  82 /*
  83  * SMDK WM8994 DAI operations.
  84  */
  85 static struct snd_soc_ops smdk_ops = {
  86         .hw_params = smdk_hw_params,
  87 };
  88
  89 static int smdk_wm8994_init_paiftx(struct snd_soc_pcm_runtime *rtd)
  90 {
  91         struct snd_soc_codec *codec = rtd->codec;
  92         struct snd_soc_dapm_context *dapm = &codec->dapm;
  93
  94         /* HeadPhone */
  95         snd_soc_dapm_enable_pin(dapm, "HPOUT1R");
  96         snd_soc_dapm_enable_pin(dapm, "HPOUT1L");
  97
  98         /* MicIn */
  99         snd_soc_dapm_enable_pin(dapm, "IN1LN");
 100         snd_soc_dapm_enable_pin(dapm, "IN1RN");
 101
 102         /* LineIn */
 103         snd_soc_dapm_enable_pin(dapm, "IN2LN");
 104         snd_soc_dapm_enable_pin(dapm, "IN2RN");
 105
 106         /* Other pins NC */
 107         snd_soc_dapm_nc_pin(dapm, "HPOUT2P");
 108         snd_soc_dapm_nc_pin(dapm, "HPOUT2N");
 109         snd_soc_dapm_nc_pin(dapm, "SPKOUTLN");
 110         snd_soc_dapm_nc_pin(dapm, "SPKOUTLP");
 111         snd_soc_dapm_nc_pin(dapm, "SPKOUTRP");
 112         snd_soc_dapm_nc_pin(dapm, "SPKOUTRN");
 113         snd_soc_dapm_nc_pin(dapm, "LINEOUT1N");
 114         snd_soc_dapm_nc_pin(dapm, "LINEOUT1P");
 115         snd_soc_dapm_nc_pin(dapm, "LINEOUT2N");
 116         snd_soc_dapm_nc_pin(dapm, "LINEOUT2P");
 117         snd_soc_dapm_nc_pin(dapm, "IN1LP");
 118         snd_soc_dapm_nc_pin(dapm, "IN2LP:VXRN");
 119         snd_soc_dapm_nc_pin(dapm, "IN1RP");
 120         snd_soc_dapm_nc_pin(dapm, "IN2RP:VXRP");
 121
 122         return 0;
 123 }
 124
 125 static struct snd_soc_dai_link smdk_dai[] = {
 126         { /* Primary DAI i/f */
 127                 .name = "WM8994 AIF1",
 128                 .stream_name = "Pri_Dai",
 129                 .cpu_dai_name = "samsung-i2s.0",
 130                 .codec_dai_name = "wm8994-aif1",
 131                 .platform_name = "samsung-i2s.0",
 132                 .codec_name = "wm8994-codec",
 133                 .init = smdk_wm8994_init_paiftx,
 134                 .ops = &smdk_ops,
 135         }, { /* Sec_Fifo Playback i/f */
 136                 .name = "Sec_FIFO TX",
 137                 .stream_name = "Sec_Dai",
 138                 .cpu_dai_name = "samsung-i2s-sec",
 139                 .codec_dai_name = "wm8994-aif1",
 140                 .platform_name = "samsung-i2s-sec",
 141                 .codec_name = "wm8994-codec",
 142                 .ops = &smdk_ops,
 143         },
 144 };
 145
 146 static struct snd_soc_card smdk = {
 147         .name = "SMDK-I2S",
 148         .owner = THIS_MODULE,
 149         .dai_link = smdk_dai,
 150         .num_links = ARRAY_SIZE(smdk_dai),
 151 };
 152
 153
 154 static int smdk_audio_probe(struct platform_device *pdev)
 155 {
 156         int ret;
 157         struct device_node *np = pdev->dev.of_node;
 158         struct snd_soc_card *card = &smdk;
 159
 160         card->dev = &pdev->dev;
 161
 162         if (np) {
 163                 smdk_dai[0].cpu_dai_name = NULL;
 164                 smdk_dai[0].cpu_of_node = of_parse_phandle(np,
 165                                 "samsung,i2s-controller", 0);
 166                 if (!smdk_dai[0].cpu_of_node) {
 167                         dev_err(&pdev->dev,
 168                            "Property 'samsung,i2s-controller' missing or invalid\n");
 169                         ret = -EINVAL;
 170                 }
 171
 172                 smdk_dai[0].platform_name = NULL;
 173                 smdk_dai[0].platform_of_node = smdk_dai[0].cpu_of_node;
 174         }
 175
 176         ret = snd_soc_register_card(card);
 177
 178         if (ret)
 179                 dev_err(&pdev->dev, "snd_soc_register_card() failed:%d\n", ret);
 180
 181         return ret;
 182 }
 183
 184 static int smdk_audio_remove(struct platform_device *pdev)
 185 {
 186         struct snd_soc_card *card = platform_get_drvdata(pdev);
 187
 188         snd_soc_unregister_card(card);
 189
 190         return 0;
 191 }
 192
 193 #ifdef CONFIG_OF
 194 static const struct of_device_id samsung_wm8994_of_match[] = {
 195         { .compatible = "samsung,smdk-wm8994", },
 196         {},
 197 };
 198 MODULE_DEVICE_TABLE(of, samsung_wm8994_of_match);
 199 #endif /* CONFIG_OF */
 200
 201 static struct platform_driver smdk_audio_driver = {
 202         .driver         = {
 203                 .name   = "smdk-audio",
 204                 .owner  = THIS_MODULE,
 205                 .of_match_table = of_match_ptr(samsung_wm8994_of_match),
 206         },
 207         .probe          = smdk_audio_probe,
 208         .remove         = smdk_audio_remove,
 209 };
 210
 211 module_platform_driver(smdk_audio_driver);
 212
 213 MODULE_DESCRIPTION("ALSA SoC SMDK WM8994");
 214 MODULE_LICENSE("GPL");
 215 MODULE_ALIAS("platform:smdk-audio");