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 #include <linux/of_device.h>
  15
  16  /*
  17   * Default CFG switch settings to use this driver:
  18   *     SMDKV310: CFG5-1000, CFG7-111111
  19   */
  20
  21  /*
  22   * Configure audio route as :-
  23   * $ amixer sset 'DAC1' on,on
  24   * $ amixer sset 'Right Headphone Mux' 'DAC'
  25   * $ amixer sset 'Left Headphone Mux' 'DAC'
  26   * $ amixer sset 'DAC1R Mixer AIF1.1' on
  27   * $ amixer sset 'DAC1L Mixer AIF1.1' on
  28   * $ amixer sset 'IN2L' on
  29   * $ amixer sset 'IN2L PGA IN2LN' on
  30   * $ amixer sset 'MIXINL IN2L' on
  31   * $ amixer sset 'AIF1ADC1L Mixer ADC/DMIC' on
  32   * $ amixer sset 'IN2R' on
  33   * $ amixer sset 'IN2R PGA IN2RN' on
  34   * $ amixer sset 'MIXINR IN2R' on
  35   * $ amixer sset 'AIF1ADC1R Mixer ADC/DMIC' on
  36   */
  37
  38 /* SMDK has a 16.934MHZ crystal attached to WM8994 */
  39 #define SMDK_WM8994_FREQ 16934000
  40
  41 struct smdk_wm8994_data {
  42         int mclk1_rate;
  43 };
  44
  45 /* Default SMDKs */
  46 static struct smdk_wm8994_data smdk_board_data = {
  47         .mclk1_rate = SMDK_WM8994_FREQ,
  48 };
  49
  50 static int smdk_hw_params(struct snd_pcm_substream *substream,
  51         struct snd_pcm_hw_params *params)
  52 {
  53         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  54         struct snd_soc_dai *codec_dai = rtd->codec_dai;
  55         unsigned int pll_out;
  56         int ret;
  57
  58         /* AIF1CLK should be >=3MHz for optimal performance */
  59         if (params_format(params) == SNDRV_PCM_FORMAT_S24_LE)
  60                 pll_out = params_rate(params) * 384;
  61         else if (params_rate(params) == 8000 || params_rate(params) == 11025)
  62                 pll_out = params_rate(params) * 512;
  63         else
  64                 pll_out = params_rate(params) * 256;
  65
  66         ret = snd_soc_dai_set_pll(codec_dai, WM8994_FLL1, WM8994_FLL_SRC_MCLK1,
  67                                         SMDK_WM8994_FREQ, pll_out);
  68         if (ret < 0)
  69                 return ret;
  70
  71         ret = snd_soc_dai_set_sysclk(codec_dai, WM8994_SYSCLK_FLL1,
  72                                         pll_out, SND_SOC_CLOCK_IN);
  73         if (ret < 0)
  74                 return ret;
  75
  76         return 0;
  77 }
  78
  79 /*
  80  * SMDK WM8994 DAI operations.
  81  */
  82 static struct snd_soc_ops smdk_ops = {
  83         .hw_params = smdk_hw_params,
  84 };
  85
  86 static int smdk_wm8994_init_paiftx(struct snd_soc_pcm_runtime *rtd)
  87 {
  88         struct snd_soc_codec *codec = rtd->codec;
  89         struct snd_soc_dapm_context *dapm = &codec->dapm;
  90
  91         /* HeadPhone */
  92         snd_soc_dapm_enable_pin(dapm, "HPOUT1R");
  93         snd_soc_dapm_enable_pin(dapm, "HPOUT1L");
  94
  95         /* MicIn */
  96         snd_soc_dapm_enable_pin(dapm, "IN1LN");
  97         snd_soc_dapm_enable_pin(dapm, "IN1RN");
  98
  99         /* LineIn */
 100         snd_soc_dapm_enable_pin(dapm, "IN2LN");
 101         snd_soc_dapm_enable_pin(dapm, "IN2RN");
 102
 103         /* Other pins NC */
 104         snd_soc_dapm_nc_pin(dapm, "HPOUT2P");
 105         snd_soc_dapm_nc_pin(dapm, "HPOUT2N");
 106         snd_soc_dapm_nc_pin(dapm, "SPKOUTLN");
 107         snd_soc_dapm_nc_pin(dapm, "SPKOUTLP");
 108         snd_soc_dapm_nc_pin(dapm, "SPKOUTRP");
 109         snd_soc_dapm_nc_pin(dapm, "SPKOUTRN");
 110         snd_soc_dapm_nc_pin(dapm, "LINEOUT1N");
 111         snd_soc_dapm_nc_pin(dapm, "LINEOUT1P");
 112         snd_soc_dapm_nc_pin(dapm, "LINEOUT2N");
 113         snd_soc_dapm_nc_pin(dapm, "LINEOUT2P");
 114         snd_soc_dapm_nc_pin(dapm, "IN1LP");
 115         snd_soc_dapm_nc_pin(dapm, "IN2LP:VXRN");
 116         snd_soc_dapm_nc_pin(dapm, "IN1RP");
 117         snd_soc_dapm_nc_pin(dapm, "IN2RP:VXRP");
 118
 119         return 0;
 120 }
 121
 122 static struct snd_soc_dai_link smdk_dai[] = {
 123         { /* Primary DAI i/f */
 124                 .name = "WM8994 AIF1",
 125                 .stream_name = "Pri_Dai",
 126                 .cpu_dai_name = "samsung-i2s.0",
 127                 .codec_dai_name = "wm8994-aif1",
 128                 .platform_name = "samsung-i2s.0",
 129                 .codec_name = "wm8994-codec",
 130                 .init = smdk_wm8994_init_paiftx,
 131                 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
 132                         SND_SOC_DAIFMT_CBM_CFM,
 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-sec",
 138                 .codec_dai_name = "wm8994-aif1",
 139                 .platform_name = "samsung-i2s-sec",
 140                 .codec_name = "wm8994-codec",
 141                 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
 142                         SND_SOC_DAIFMT_CBM_CFM,
 143                 .ops = &smdk_ops,
 144         },
 145 };
 146
 147 static struct snd_soc_card smdk = {
 148         .name = "SMDK-I2S",
 149         .owner = THIS_MODULE,
 150         .dai_link = smdk_dai,
 151         .num_links = ARRAY_SIZE(smdk_dai),
 152 };
 153
 154 #ifdef CONFIG_OF
 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 #endif /* CONFIG_OF */
 161
 162 static int smdk_audio_probe(struct platform_device *pdev)
 163 {
 164         int ret;
 165         struct device_node *np = pdev->dev.of_node;
 166         struct snd_soc_card *card = &smdk;
 167         struct smdk_wm8994_data *board;
 168         const struct of_device_id *id;
 169
 170         card->dev = &pdev->dev;
 171
 172         board = devm_kzalloc(&pdev->dev, sizeof(*board), GFP_KERNEL);
 173         if (!board)
 174                 return -ENOMEM;
 175
 176         if (np) {
 177                 smdk_dai[0].cpu_dai_name = NULL;
 178                 smdk_dai[0].cpu_of_node = of_parse_phandle(np,
 179                                 "samsung,i2s-controller", 0);
 180                 if (!smdk_dai[0].cpu_of_node) {
 181                         dev_err(&pdev->dev,
 182                            "Property 'samsung,i2s-controller' missing or invalid\n");
 183                         ret = -EINVAL;
 184                 }
 185
 186                 smdk_dai[0].platform_name = NULL;
 187                 smdk_dai[0].platform_of_node = smdk_dai[0].cpu_of_node;
 188         }
 189
 190         id = of_match_device(samsung_wm8994_of_match, &pdev->dev);
 191         if (id)
 192                 *board = *((struct smdk_wm8994_data *)id->data);
 193
 194         platform_set_drvdata(pdev, board);
 195
 196         ret = snd_soc_register_card(card);
 197
 198         if (ret)
 199                 dev_err(&pdev->dev, "snd_soc_register_card() failed:%d\n", ret);
 200
 201         return ret;
 202 }
 203
 204 static int smdk_audio_remove(struct platform_device *pdev)
 205 {
 206         struct snd_soc_card *card = platform_get_drvdata(pdev);
 207
 208         snd_soc_unregister_card(card);
 209
 210         return 0;
 211 }
 212
 213 static struct platform_driver smdk_audio_driver = {
 214         .driver         = {
 215                 .name   = "smdk-audio-wm8894",
 216                 .owner  = THIS_MODULE,
 217                 .of_match_table = of_match_ptr(samsung_wm8994_of_match),
 218         },
 219         .probe          = smdk_audio_probe,
 220         .remove         = smdk_audio_remove,
 221 };
 222
 223 module_platform_driver(smdk_audio_driver);
 224
 225 MODULE_DESCRIPTION("ALSA SoC SMDK WM8994");
 226 MODULE_LICENSE("GPL");
 227 MODULE_ALIAS("platform:smdk-audio-wm8994");