sound/soc/samsung/odroidx2_max98090.c

   1 /*
   2  * Copyright (C) 2014 Samsung Electronics Co., Ltd.
   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 <linux/of.h>
  11 #include <linux/module.h>
  12 #include <sound/soc.h>
  13 #include <sound/pcm_params.h>
  14 #include "i2s.h"
  15
  16 struct odroidx2_drv_data {
  17         const struct snd_soc_dapm_widget *dapm_widgets;
  18         unsigned int num_dapm_widgets;
  19 };
  20
  21 /* The I2S CDCLK output clock frequency for the MAX98090 codec */
  22 #define MAX98090_MCLK 19200000
  23
  24 static struct snd_soc_dai_link odroidx2_dai[];
  25
  26 static int odroidx2_late_probe(struct snd_soc_card *card)
  27 {
  28         struct snd_soc_dai *codec_dai = card->rtd[0].codec_dai;
  29         struct snd_soc_dai *cpu_dai = card->rtd[0].cpu_dai;
  30         int ret;
  31
  32         ret = snd_soc_dai_set_sysclk(codec_dai, 0, MAX98090_MCLK,
  33                                                 SND_SOC_CLOCK_IN);
  34
  35         if (ret < 0 || of_find_property(odroidx2_dai[0].codec_of_node,
  36                                         "clocks", NULL))
  37                 return ret;
  38
  39         /* Set the cpu DAI configuration in order to use CDCLK */
  40         return snd_soc_dai_set_sysclk(cpu_dai, SAMSUNG_I2S_CDCLK,
  41                                         0, SND_SOC_CLOCK_OUT);
  42 }
  43
  44 static const struct snd_soc_dapm_widget odroidx2_dapm_widgets[] = {
  45         SND_SOC_DAPM_HP("Headphone Jack", NULL),
  46         SND_SOC_DAPM_MIC("Mic Jack", NULL),
  47         SND_SOC_DAPM_MIC("DMIC", NULL),
  48 };
  49
  50 static const struct snd_soc_dapm_widget odroidu3_dapm_widgets[] = {
  51         SND_SOC_DAPM_HP("Headphone Jack", NULL),
  52         SND_SOC_DAPM_SPK("Speakers", NULL),
  53 };
  54
  55 static struct snd_soc_dai_link odroidx2_dai[] = {
  56         {
  57                 .name           = "MAX98090",
  58                 .stream_name    = "MAX98090 PCM",
  59                 .codec_dai_name = "HiFi",
  60                 .dai_fmt        = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
  61                                   SND_SOC_DAIFMT_CBM_CFM,
  62         }
  63 };
  64
  65 static struct snd_soc_card odroidx2 = {
  66         .owner                  = THIS_MODULE,
  67         .dai_link               = odroidx2_dai,
  68         .num_links              = ARRAY_SIZE(odroidx2_dai),
  69         .fully_routed           = true,
  70         .late_probe             = odroidx2_late_probe,
  71 };
  72
  73 static const struct odroidx2_drv_data odroidx2_drvdata = {
  74         .dapm_widgets           = odroidx2_dapm_widgets,
  75         .num_dapm_widgets       = ARRAY_SIZE(odroidx2_dapm_widgets),
  76 };
  77
  78 static const struct odroidx2_drv_data odroidu3_drvdata = {
  79         .dapm_widgets           = odroidu3_dapm_widgets,
  80         .num_dapm_widgets       = ARRAY_SIZE(odroidu3_dapm_widgets),
  81 };
  82
  83 static const struct of_device_id odroidx2_audio_of_match[] = {
  84         {
  85                 .compatible     = "samsung,odroidx2-audio",
  86                 .data           = &odroidx2_drvdata,
  87         }, {
  88                 .compatible     = "samsung,odroidu3-audio",
  89                 .data           = &odroidu3_drvdata,
  90         },
  91         { },
  92 };
  93 MODULE_DEVICE_TABLE(of, odroidx2_audio_of_match);
  94
  95 static int odroidx2_audio_probe(struct platform_device *pdev)
  96 {
  97         struct device_node *snd_node = pdev->dev.of_node;
  98         struct snd_soc_card *card = &odroidx2;
  99         struct device_node *i2s_node, *codec_node;
 100         struct odroidx2_drv_data *dd;
 101         const struct of_device_id *of_id;
 102         int ret;
 103
 104         of_id = of_match_node(odroidx2_audio_of_match, snd_node);
 105         dd = (struct odroidx2_drv_data *)of_id->data;
 106
 107         card->num_dapm_widgets = dd->num_dapm_widgets;
 108         card->dapm_widgets = dd->dapm_widgets;
 109
 110         card->dev = &pdev->dev;
 111
 112         ret = snd_soc_of_parse_card_name(card, "samsung,model");
 113         if (ret < 0)
 114                 return ret;
 115
 116         ret = snd_soc_of_parse_audio_routing(card, "samsung,audio-routing");
 117         if (ret < 0)
 118                 return ret;
 119
 120         codec_node = of_parse_phandle(snd_node, "samsung,audio-codec", 0);
 121         if (!codec_node) {
 122                 dev_err(&pdev->dev,
 123                         "Failed parsing samsung,i2s-codec property\n");
 124                 return -EINVAL;
 125         }
 126
 127         i2s_node = of_parse_phandle(snd_node, "samsung,i2s-controller", 0);
 128         if (!i2s_node) {
 129                 dev_err(&pdev->dev,
 130                         "Failed parsing samsung,i2s-controller property\n");
 131                 ret = -EINVAL;
 132                 goto err_put_codec_n;
 133         }
 134
 135         odroidx2_dai[0].codec_of_node = codec_node;
 136         odroidx2_dai[0].cpu_of_node = i2s_node;
 137         odroidx2_dai[0].platform_of_node = i2s_node;
 138
 139         ret = snd_soc_register_card(card);
 140         if (ret) {
 141                 dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
 142                         ret);
 143                 goto err_put_i2s_n;
 144         }
 145         return 0;
 146
 147 err_put_i2s_n:
 148         of_node_put(i2s_node);
 149 err_put_codec_n:
 150         of_node_put(codec_node);
 151         return ret;
 152 }
 153
 154 static int odroidx2_audio_remove(struct platform_device *pdev)
 155 {
 156         struct snd_soc_card *card = platform_get_drvdata(pdev);
 157
 158         snd_soc_unregister_card(card);
 159
 160         of_node_put(odroidx2_dai[0].cpu_of_node);
 161         of_node_put(odroidx2_dai[0].codec_of_node);
 162
 163         return 0;
 164 }
 165
 166 static struct platform_driver odroidx2_audio_driver = {
 167         .driver = {
 168                 .name           = "odroidx2-audio",
 169                 .of_match_table = odroidx2_audio_of_match,
 170                 .pm             = &snd_soc_pm_ops,
 171         },
 172         .probe  = odroidx2_audio_probe,
 173         .remove = odroidx2_audio_remove,
 174 };
 175 module_platform_driver(odroidx2_audio_driver);
 176
 177 MODULE_AUTHOR("Chen Zhen <zhen1.chen@samsung.com>");
 178 MODULE_AUTHOR("Sylwester Nawrocki <s.nawrocki@samsung.com>");
 179 MODULE_DESCRIPTION("ALSA SoC Odroid X2/U3 Audio Support");
 180 MODULE_LICENSE("GPL v2");