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_width(params) == 24)
  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         /* Other pins NC */
  93         snd_soc_dapm_nc_pin(dapm, "HPOUT2P");
  94         snd_soc_dapm_nc_pin(dapm, "HPOUT2N");
  95         snd_soc_dapm_nc_pin(dapm, "SPKOUTLN");
  96         snd_soc_dapm_nc_pin(dapm, "SPKOUTLP");
  97         snd_soc_dapm_nc_pin(dapm, "SPKOUTRP");
  98         snd_soc_dapm_nc_pin(dapm, "SPKOUTRN");
  99         snd_soc_dapm_nc_pin(dapm, "LINEOUT1N");
 100         snd_soc_dapm_nc_pin(dapm, "LINEOUT1P");
 101         snd_soc_dapm_nc_pin(dapm, "LINEOUT2N");
 102         snd_soc_dapm_nc_pin(dapm, "LINEOUT2P");
 103         snd_soc_dapm_nc_pin(dapm, "IN1LP");
 104         snd_soc_dapm_nc_pin(dapm, "IN2LP:VXRN");
 105         snd_soc_dapm_nc_pin(dapm, "IN1RP");
 106         snd_soc_dapm_nc_pin(dapm, "IN2RP:VXRP");
 107
 108         return 0;
 109 }
 110
 111 static struct snd_soc_dai_link smdk_dai[] = {
 112         { /* Primary DAI i/f */
 113                 .name = "WM8994 AIF1",
 114                 .stream_name = "Pri_Dai",
 115                 .cpu_dai_name = "samsung-i2s.0",
 116                 .codec_dai_name = "wm8994-aif1",
 117                 .platform_name = "samsung-i2s.0",
 118                 .codec_name = "wm8994-codec",
 119                 .init = smdk_wm8994_init_paiftx,
 120                 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
 121                         SND_SOC_DAIFMT_CBM_CFM,
 122                 .ops = &smdk_ops,
 123         }, { /* Sec_Fifo Playback i/f */
 124                 .name = "Sec_FIFO TX",
 125                 .stream_name = "Sec_Dai",
 126                 .cpu_dai_name = "samsung-i2s-sec",
 127                 .codec_dai_name = "wm8994-aif1",
 128                 .platform_name = "samsung-i2s-sec",
 129                 .codec_name = "wm8994-codec",
 130                 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
 131                         SND_SOC_DAIFMT_CBM_CFM,
 132                 .ops = &smdk_ops,
 133         },
 134 };
 135
 136 static struct snd_soc_card smdk = {
 137         .name = "SMDK-I2S",
 138         .owner = THIS_MODULE,
 139         .dai_link = smdk_dai,
 140         .num_links = ARRAY_SIZE(smdk_dai),
 141 };
 142
 143 static const struct of_device_id samsung_wm8994_of_match[] = {
 144         { .compatible = "samsung,smdk-wm8994", .data = &smdk_board_data },
 145         {},
 146 };
 147 MODULE_DEVICE_TABLE(of, samsung_wm8994_of_match);
 148
 149 static int smdk_audio_probe(struct platform_device *pdev)
 150 {
 151         int ret;
 152         struct device_node *np = pdev->dev.of_node;
 153         struct snd_soc_card *card = &smdk;
 154         struct smdk_wm8994_data *board;
 155         const struct of_device_id *id;
 156
 157         card->dev = &pdev->dev;
 158
 159         board = devm_kzalloc(&pdev->dev, sizeof(*board), GFP_KERNEL);
 160         if (!board)
 161                 return -ENOMEM;
 162
 163         if (np) {
 164                 smdk_dai[0].cpu_dai_name = NULL;
 165                 smdk_dai[0].cpu_of_node = of_parse_phandle(np,
 166                                 "samsung,i2s-controller", 0);
 167                 if (!smdk_dai[0].cpu_of_node) {
 168                         dev_err(&pdev->dev,
 169                            "Property 'samsung,i2s-controller' missing or invalid\n");
 170                         ret = -EINVAL;
 171                 }
 172
 173                 smdk_dai[0].platform_name = NULL;
 174                 smdk_dai[0].platform_of_node = smdk_dai[0].cpu_of_node;
 175         }
 176
 177         id = of_match_device(of_match_ptr(samsung_wm8994_of_match), &pdev->dev);
 178         if (id)
 179                 *board = *((struct smdk_wm8994_data *)id->data);
 180
 181         platform_set_drvdata(pdev, board);
 182
 183         ret = devm_snd_soc_register_card(&pdev->dev, card);
 184
 185         if (ret)
 186                 dev_err(&pdev->dev, "snd_soc_register_card() failed:%d\n", ret);
 187
 188         return ret;
 189 }
 190
 191 static struct platform_driver smdk_audio_driver = {
 192         .driver         = {
 193                 .name   = "smdk-audio-wm8994",
 194                 .owner  = THIS_MODULE,
 195                 .of_match_table = of_match_ptr(samsung_wm8994_of_match),
 196                 .pm     = &snd_soc_pm_ops,
 197         },
 198         .probe          = smdk_audio_probe,
 199 };
 200
 201 module_platform_driver(smdk_audio_driver);
 202
 203 MODULE_DESCRIPTION("ALSA SoC SMDK WM8994");
 204 MODULE_LICENSE("GPL");
 205 MODULE_ALIAS("platform:smdk-audio-wm8994");