sound/soc/samsung/smdk_wm8994.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2
   3 #include "../codecs/wm8994.h"
   4 #include <sound/pcm_params.h>
   5 #include <sound/soc.h>
   6 #include <linux/module.h>
   7 #include <linux/of.h>
   8
   9  /*
  10   * Default CFG switch settings to use this driver:
  11   *     SMDKV310: CFG5-1000, CFG7-111111
  12   */
  13
  14  /*
  15   * Configure audio route as :-
  16   * $ amixer sset 'DAC1' on,on
  17   * $ amixer sset 'Right Headphone Mux' 'DAC'
  18   * $ amixer sset 'Left Headphone Mux' 'DAC'
  19   * $ amixer sset 'DAC1R Mixer AIF1.1' on
  20   * $ amixer sset 'DAC1L Mixer AIF1.1' on
  21   * $ amixer sset 'IN2L' on
  22   * $ amixer sset 'IN2L PGA IN2LN' on
  23   * $ amixer sset 'MIXINL IN2L' on
  24   * $ amixer sset 'AIF1ADC1L Mixer ADC/DMIC' on
  25   * $ amixer sset 'IN2R' on
  26   * $ amixer sset 'IN2R PGA IN2RN' on
  27   * $ amixer sset 'MIXINR IN2R' on
  28   * $ amixer sset 'AIF1ADC1R Mixer ADC/DMIC' on
  29   */
  30
  31 /* SMDK has a 16.934MHZ crystal attached to WM8994 */
  32 #define SMDK_WM8994_FREQ 16934000
  33
  34 static int smdk_hw_params(struct snd_pcm_substream *substream,
  35         struct snd_pcm_hw_params *params)
  36 {
  37         struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
  38         struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(rtd, 0);
  39         unsigned int pll_out;
  40         int ret;
  41
  42         /* AIF1CLK should be >=3MHz for optimal performance */
  43         if (params_width(params) == 24)
  44                 pll_out = params_rate(params) * 384;
  45         else if (params_rate(params) == 8000 || params_rate(params) == 11025)
  46                 pll_out = params_rate(params) * 512;
  47         else
  48                 pll_out = params_rate(params) * 256;
  49
  50         ret = snd_soc_dai_set_pll(codec_dai, WM8994_FLL1, WM8994_FLL_SRC_MCLK1,
  51                                         SMDK_WM8994_FREQ, pll_out);
  52         if (ret < 0)
  53                 return ret;
  54
  55         ret = snd_soc_dai_set_sysclk(codec_dai, WM8994_SYSCLK_FLL1,
  56                                         pll_out, SND_SOC_CLOCK_IN);
  57         if (ret < 0)
  58                 return ret;
  59
  60         return 0;
  61 }
  62
  63 /*
  64  * SMDK WM8994 DAI operations.
  65  */
  66 static const struct snd_soc_ops smdk_ops = {
  67         .hw_params = smdk_hw_params,
  68 };
  69
  70 static int smdk_wm8994_init_paiftx(struct snd_soc_pcm_runtime *rtd)
  71 {
  72         struct snd_soc_dapm_context *dapm = &rtd->card->dapm;
  73
  74         /* Other pins NC */
  75         snd_soc_dapm_nc_pin(dapm, "HPOUT2P");
  76         snd_soc_dapm_nc_pin(dapm, "HPOUT2N");
  77         snd_soc_dapm_nc_pin(dapm, "SPKOUTLN");
  78         snd_soc_dapm_nc_pin(dapm, "SPKOUTLP");
  79         snd_soc_dapm_nc_pin(dapm, "SPKOUTRP");
  80         snd_soc_dapm_nc_pin(dapm, "SPKOUTRN");
  81         snd_soc_dapm_nc_pin(dapm, "LINEOUT1N");
  82         snd_soc_dapm_nc_pin(dapm, "LINEOUT1P");
  83         snd_soc_dapm_nc_pin(dapm, "LINEOUT2N");
  84         snd_soc_dapm_nc_pin(dapm, "LINEOUT2P");
  85         snd_soc_dapm_nc_pin(dapm, "IN1LP");
  86         snd_soc_dapm_nc_pin(dapm, "IN2LP:VXRN");
  87         snd_soc_dapm_nc_pin(dapm, "IN1RP");
  88         snd_soc_dapm_nc_pin(dapm, "IN2RP:VXRP");
  89
  90         return 0;
  91 }
  92
  93 SND_SOC_DAILINK_DEFS(aif1,
  94         DAILINK_COMP_ARRAY(COMP_CPU("samsung-i2s.0")),
  95         DAILINK_COMP_ARRAY(COMP_CODEC("wm8994-codec", "wm8994-aif1")),
  96         DAILINK_COMP_ARRAY(COMP_PLATFORM("samsung-i2s.0")));
  97
  98 SND_SOC_DAILINK_DEFS(fifo_tx,
  99         DAILINK_COMP_ARRAY(COMP_CPU("samsung-i2s-sec")),
 100         DAILINK_COMP_ARRAY(COMP_CODEC("wm8994-codec", "wm8994-aif1")),
 101         DAILINK_COMP_ARRAY(COMP_PLATFORM("samsung-i2s-sec")));
 102
 103 static struct snd_soc_dai_link smdk_dai[] = {
 104         { /* Primary DAI i/f */
 105                 .name = "WM8994 AIF1",
 106                 .stream_name = "Pri_Dai",
 107                 .init = smdk_wm8994_init_paiftx,
 108                 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
 109                         SND_SOC_DAIFMT_CBM_CFM,
 110                 .ops = &smdk_ops,
 111                 SND_SOC_DAILINK_REG(aif1),
 112         }, { /* Sec_Fifo Playback i/f */
 113                 .name = "Sec_FIFO TX",
 114                 .stream_name = "Sec_Dai",
 115                 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
 116                         SND_SOC_DAIFMT_CBM_CFM,
 117                 .ops = &smdk_ops,
 118                 SND_SOC_DAILINK_REG(fifo_tx),
 119         },
 120 };
 121
 122 static struct snd_soc_card smdk = {
 123         .name = "SMDK-I2S",
 124         .owner = THIS_MODULE,
 125         .dai_link = smdk_dai,
 126         .num_links = ARRAY_SIZE(smdk_dai),
 127 };
 128
 129 static const struct of_device_id samsung_wm8994_of_match[] = {
 130         { .compatible = "samsung,smdk-wm8994" },
 131         {},
 132 };
 133 MODULE_DEVICE_TABLE(of, samsung_wm8994_of_match);
 134
 135 static int smdk_audio_probe(struct platform_device *pdev)
 136 {
 137         int ret;
 138         struct device_node *np = pdev->dev.of_node;
 139         struct snd_soc_card *card = &smdk;
 140
 141         card->dev = &pdev->dev;
 142
 143         if (np) {
 144                 smdk_dai[0].cpus->dai_name = NULL;
 145                 smdk_dai[0].cpus->of_node = of_parse_phandle(np,
 146                                 "samsung,i2s-controller", 0);
 147                 if (!smdk_dai[0].cpus->of_node) {
 148                         dev_err(&pdev->dev,
 149                            "Property 'samsung,i2s-controller' missing or invalid\n");
 150                         ret = -EINVAL;
 151                         return ret;
 152                 }
 153
 154                 smdk_dai[0].platforms->name = NULL;
 155                 smdk_dai[0].platforms->of_node = smdk_dai[0].cpus->of_node;
 156         }
 157
 158         ret = devm_snd_soc_register_card(&pdev->dev, card);
 159
 160         if (ret)
 161                 dev_err_probe(&pdev->dev, ret, "snd_soc_register_card() failed\n");
 162
 163         return ret;
 164 }
 165
 166 static struct platform_driver smdk_audio_driver = {
 167         .driver         = {
 168                 .name   = "smdk-audio-wm8994",
 169                 .of_match_table = samsung_wm8994_of_match,
 170                 .pm     = &snd_soc_pm_ops,
 171         },
 172         .probe          = smdk_audio_probe,
 173 };
 174
 175 module_platform_driver(smdk_audio_driver);
 176
 177 MODULE_DESCRIPTION("ALSA SoC SMDK WM8994");
 178 MODULE_LICENSE("GPL");
 179 MODULE_ALIAS("platform:smdk-audio-wm8994");