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_dapm_context *dapm = &rtd->card->dapm;
  90
  91         /* Other pins NC */
  92         snd_soc_dapm_nc_pin(dapm, "HPOUT2P");
  93         snd_soc_dapm_nc_pin(dapm, "HPOUT2N");
  94         snd_soc_dapm_nc_pin(dapm, "SPKOUTLN");
  95         snd_soc_dapm_nc_pin(dapm, "SPKOUTLP");
  96         snd_soc_dapm_nc_pin(dapm, "SPKOUTRP");
  97         snd_soc_dapm_nc_pin(dapm, "SPKOUTRN");
  98         snd_soc_dapm_nc_pin(dapm, "LINEOUT1N");
  99         snd_soc_dapm_nc_pin(dapm, "LINEOUT1P");
 100         snd_soc_dapm_nc_pin(dapm, "LINEOUT2N");
 101         snd_soc_dapm_nc_pin(dapm, "LINEOUT2P");
 102         snd_soc_dapm_nc_pin(dapm, "IN1LP");
 103         snd_soc_dapm_nc_pin(dapm, "IN2LP:VXRN");
 104         snd_soc_dapm_nc_pin(dapm, "IN1RP");
 105         snd_soc_dapm_nc_pin(dapm, "IN2RP:VXRP");
 106
 107         return 0;
 108 }
 109
 110 static struct snd_soc_dai_link smdk_dai[] = {
 111         { /* Primary DAI i/f */
 112                 .name = "WM8994 AIF1",
 113                 .stream_name = "Pri_Dai",
 114                 .cpu_dai_name = "samsung-i2s.0",
 115                 .codec_dai_name = "wm8994-aif1",
 116                 .platform_name = "samsung-i2s.0",
 117                 .codec_name = "wm8994-codec",
 118                 .init = smdk_wm8994_init_paiftx,
 119                 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
 120                         SND_SOC_DAIFMT_CBM_CFM,
 121                 .ops = &smdk_ops,
 122         }, { /* Sec_Fifo Playback i/f */
 123                 .name = "Sec_FIFO TX",
 124                 .stream_name = "Sec_Dai",
 125                 .cpu_dai_name = "samsung-i2s-sec",
 126                 .codec_dai_name = "wm8994-aif1",
 127                 .platform_name = "samsung-i2s-sec",
 128                 .codec_name = "wm8994-codec",
 129                 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
 130                         SND_SOC_DAIFMT_CBM_CFM,
 131                 .ops = &smdk_ops,
 132         },
 133 };
 134
 135 static struct snd_soc_card smdk = {
 136         .name = "SMDK-I2S",
 137         .owner = THIS_MODULE,
 138         .dai_link = smdk_dai,
 139         .num_links = ARRAY_SIZE(smdk_dai),
 140 };
 141
 142 static const struct of_device_id samsung_wm8994_of_match[] = {
 143         { .compatible = "samsung,smdk-wm8994", .data = &smdk_board_data },
 144         {},
 145 };
 146 MODULE_DEVICE_TABLE(of, samsung_wm8994_of_match);
 147
 148 static int smdk_audio_probe(struct platform_device *pdev)
 149 {
 150         int ret;
 151         struct device_node *np = pdev->dev.of_node;
 152         struct snd_soc_card *card = &smdk;
 153         struct smdk_wm8994_data *board;
 154         const struct of_device_id *id;
 155
 156         card->dev = &pdev->dev;
 157
 158         board = devm_kzalloc(&pdev->dev, sizeof(*board), GFP_KERNEL);
 159         if (!board)
 160                 return -ENOMEM;
 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         id = of_match_device(of_match_ptr(samsung_wm8994_of_match), &pdev->dev);
 177         if (id)
 178                 *board = *((struct smdk_wm8994_data *)id->data);
 179
 180         platform_set_drvdata(pdev, board);
 181
 182         ret = devm_snd_soc_register_card(&pdev->dev, card);
 183
 184         if (ret)
 185                 dev_err(&pdev->dev, "snd_soc_register_card() failed:%d\n", ret);
 186
 187         return ret;
 188 }
 189
 190 static struct platform_driver smdk_audio_driver = {
 191         .driver         = {
 192                 .name   = "smdk-audio-wm8994",
 193                 .of_match_table = of_match_ptr(samsung_wm8994_of_match),
 194                 .pm     = &snd_soc_pm_ops,
 195         },
 196         .probe          = smdk_audio_probe,
 197 };
 198
 199 module_platform_driver(smdk_audio_driver);
 200
 201 MODULE_DESCRIPTION("ALSA SoC SMDK WM8994");
 202 MODULE_LICENSE("GPL");
 203 MODULE_ALIAS("platform:smdk-audio-wm8994");