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 <sound/soc.h>
  13 #include <linux/module.h>
  14 #include <linux/of.h>
  15 #include <linux/of_device.h>
  16
  17  /*
  18   * Default CFG switch settings to use this driver:
  19   *     SMDKV310: CFG5-1000, CFG7-111111
  20   */
  21
  22  /*
  23   * Configure audio route as :-
  24   * $ amixer sset 'DAC1' on,on
  25   * $ amixer sset 'Right Headphone Mux' 'DAC'
  26   * $ amixer sset 'Left Headphone Mux' 'DAC'
  27   * $ amixer sset 'DAC1R Mixer AIF1.1' on
  28   * $ amixer sset 'DAC1L Mixer AIF1.1' on
  29   * $ amixer sset 'IN2L' on
  30   * $ amixer sset 'IN2L PGA IN2LN' on
  31   * $ amixer sset 'MIXINL IN2L' on
  32   * $ amixer sset 'AIF1ADC1L Mixer ADC/DMIC' on
  33   * $ amixer sset 'IN2R' on
  34   * $ amixer sset 'IN2R PGA IN2RN' on
  35   * $ amixer sset 'MIXINR IN2R' on
  36   * $ amixer sset 'AIF1ADC1R Mixer ADC/DMIC' on
  37   */
  38
  39 /* SMDK has a 16.934MHZ crystal attached to WM8994 */
  40 #define SMDK_WM8994_FREQ 16934000
  41
  42 struct smdk_wm8994_data {
  43         int mclk1_rate;
  44 };
  45
  46 /* Default SMDKs */
  47 static struct smdk_wm8994_data smdk_board_data = {
  48         .mclk1_rate = SMDK_WM8994_FREQ,
  49 };
  50
  51 static int smdk_hw_params(struct snd_pcm_substream *substream,
  52         struct snd_pcm_hw_params *params)
  53 {
  54         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  55         struct snd_soc_dai *codec_dai = rtd->codec_dai;
  56         unsigned int pll_out;
  57         int ret;
  58
  59         /* AIF1CLK should be >=3MHz for optimal performance */
  60         if (params_format(params) == SNDRV_PCM_FORMAT_S24_LE)
  61                 pll_out = params_rate(params) * 384;
  62         else if (params_rate(params) == 8000 || params_rate(params) == 11025)
  63                 pll_out = params_rate(params) * 512;
  64         else
  65                 pll_out = params_rate(params) * 256;
  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-i2s.0",
 130                 .codec_name = "wm8994-codec",
 131                 .init = smdk_wm8994_init_paiftx,
 132                 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
 133                         SND_SOC_DAIFMT_CBM_CFM,
 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                 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
 143                         SND_SOC_DAIFMT_CBM_CFM,
 144                 .ops = &smdk_ops,
 145         },
 146 };
 147
 148 static struct snd_soc_card smdk = {
 149         .name = "SMDK-I2S",
 150         .owner = THIS_MODULE,
 151         .dai_link = smdk_dai,
 152         .num_links = ARRAY_SIZE(smdk_dai),
 153 };
 154
 155 static const struct of_device_id samsung_wm8994_of_match[] = {
 156         { .compatible = "samsung,smdk-wm8994", .data = &smdk_board_data },
 157         {},
 158 };
 159 MODULE_DEVICE_TABLE(of, samsung_wm8994_of_match);
 160
 161 static int smdk_audio_probe(struct platform_device *pdev)
 162 {
 163         int ret;
 164         struct device_node *np = pdev->dev.of_node;
 165         struct snd_soc_card *card = &smdk;
 166         struct smdk_wm8994_data *board;
 167         const struct of_device_id *id;
 168
 169         card->dev = &pdev->dev;
 170
 171         board = devm_kzalloc(&pdev->dev, sizeof(*board), GFP_KERNEL);
 172         if (!board)
 173                 return -ENOMEM;
 174
 175         if (np) {
 176                 smdk_dai[0].cpu_dai_name = NULL;
 177                 smdk_dai[0].cpu_of_node = of_parse_phandle(np,
 178                                 "samsung,i2s-controller", 0);
 179                 if (!smdk_dai[0].cpu_of_node) {
 180                         dev_err(&pdev->dev,
 181                            "Property 'samsung,i2s-controller' missing or invalid\n");
 182                         ret = -EINVAL;
 183                 }
 184
 185                 smdk_dai[0].platform_name = NULL;
 186                 smdk_dai[0].platform_of_node = smdk_dai[0].cpu_of_node;
 187         }
 188
 189         id = of_match_device(of_match_ptr(samsung_wm8994_of_match), &pdev->dev);
 190         if (id)
 191                 *board = *((struct smdk_wm8994_data *)id->data);
 192
 193         platform_set_drvdata(pdev, board);
 194
 195         ret = devm_snd_soc_register_card(&pdev->dev, card);
 196
 197         if (ret)
 198                 dev_err(&pdev->dev, "snd_soc_register_card() failed:%d\n", ret);
 199
 200         return ret;
 201 }
 202
 203 static struct platform_driver smdk_audio_driver = {
 204         .driver         = {
 205                 .name   = "smdk-audio-wm8994",
 206                 .owner  = THIS_MODULE,
 207                 .of_match_table = of_match_ptr(samsung_wm8994_of_match),
 208                 .pm     = &snd_soc_pm_ops,
 209         },
 210         .probe          = smdk_audio_probe,
 211 };
 212
 213 module_platform_driver(smdk_audio_driver);
 214
 215 MODULE_DESCRIPTION("ALSA SoC SMDK WM8994");
 216 MODULE_LICENSE("GPL");
 217 MODULE_ALIAS("platform:smdk-audio-wm8994");