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_pcm_runtime *rtd;
  29         struct snd_soc_dai *codec_dai;
  30         struct snd_soc_dai *cpu_dai;
  31         int ret;
  32
  33         rtd = snd_soc_get_pcm_runtime(card, card->dai_link[0].name);
  34         codec_dai = rtd->codec_dai;
  35         cpu_dai = rtd->cpu_dai;
  36
  37         ret = snd_soc_dai_set_sysclk(codec_dai, 0, MAX98090_MCLK,
  38                                                 SND_SOC_CLOCK_IN);
  39
  40         if (ret < 0 || of_find_property(odroidx2_dai[0].codec_of_node,
  41                                         "clocks", NULL))
  42                 return ret;
  43
  44         /* Set the cpu DAI configuration in order to use CDCLK */
  45         return snd_soc_dai_set_sysclk(cpu_dai, SAMSUNG_I2S_CDCLK,
  46                                         0, SND_SOC_CLOCK_OUT);
  47 }
  48
  49 static const struct snd_soc_dapm_widget odroidx2_dapm_widgets[] = {
  50         SND_SOC_DAPM_HP("Headphone Jack", NULL),
  51         SND_SOC_DAPM_MIC("Mic Jack", NULL),
  52         SND_SOC_DAPM_MIC("DMIC", NULL),
  53 };
  54
  55 static const struct snd_soc_dapm_widget odroidu3_dapm_widgets[] = {
  56         SND_SOC_DAPM_HP("Headphone Jack", NULL),
  57         SND_SOC_DAPM_SPK("Speakers", NULL),
  58 };
  59
  60 static struct snd_soc_dai_link odroidx2_dai[] = {
  61         {
  62                 .name           = "MAX98090",
  63                 .stream_name    = "MAX98090 PCM",
  64                 .codec_dai_name = "HiFi",
  65                 .dai_fmt        = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
  66                                   SND_SOC_DAIFMT_CBM_CFM,
  67         }
  68 };
  69
  70 static struct snd_soc_card odroidx2 = {
  71         .owner                  = THIS_MODULE,
  72         .dai_link               = odroidx2_dai,
  73         .num_links              = ARRAY_SIZE(odroidx2_dai),
  74         .fully_routed           = true,
  75         .late_probe             = odroidx2_late_probe,
  76 };
  77
  78 static const struct odroidx2_drv_data odroidx2_drvdata = {
  79         .dapm_widgets           = odroidx2_dapm_widgets,
  80         .num_dapm_widgets       = ARRAY_SIZE(odroidx2_dapm_widgets),
  81 };
  82
  83 static const struct odroidx2_drv_data odroidu3_drvdata = {
  84         .dapm_widgets           = odroidu3_dapm_widgets,
  85         .num_dapm_widgets       = ARRAY_SIZE(odroidu3_dapm_widgets),
  86 };
  87
  88 static const struct of_device_id odroidx2_audio_of_match[] = {
  89         {
  90                 .compatible     = "samsung,odroidx2-audio",
  91                 .data           = &odroidx2_drvdata,
  92         }, {
  93                 .compatible     = "samsung,odroidu3-audio",
  94                 .data           = &odroidu3_drvdata,
  95         },
  96         { },
  97 };
  98 MODULE_DEVICE_TABLE(of, odroidx2_audio_of_match);
  99
 100 static int odroidx2_audio_probe(struct platform_device *pdev)
 101 {
 102         struct device_node *snd_node = pdev->dev.of_node;
 103         struct snd_soc_card *card = &odroidx2;
 104         struct device_node *i2s_node, *codec_node;
 105         struct odroidx2_drv_data *dd;
 106         const struct of_device_id *of_id;
 107         int ret;
 108
 109         of_id = of_match_node(odroidx2_audio_of_match, snd_node);
 110         dd = (struct odroidx2_drv_data *)of_id->data;
 111
 112         card->num_dapm_widgets = dd->num_dapm_widgets;
 113         card->dapm_widgets = dd->dapm_widgets;
 114
 115         card->dev = &pdev->dev;
 116
 117         ret = snd_soc_of_parse_card_name(card, "samsung,model");
 118         if (ret < 0)
 119                 return ret;
 120
 121         ret = snd_soc_of_parse_audio_routing(card, "samsung,audio-routing");
 122         if (ret < 0)
 123                 return ret;
 124
 125         codec_node = of_parse_phandle(snd_node, "samsung,audio-codec", 0);
 126         if (!codec_node) {
 127                 dev_err(&pdev->dev,
 128                         "Failed parsing samsung,i2s-codec property\n");
 129                 return -EINVAL;
 130         }
 131
 132         i2s_node = of_parse_phandle(snd_node, "samsung,i2s-controller", 0);
 133         if (!i2s_node) {
 134                 dev_err(&pdev->dev,
 135                         "Failed parsing samsung,i2s-controller property\n");
 136                 ret = -EINVAL;
 137                 goto err_put_codec_n;
 138         }
 139
 140         odroidx2_dai[0].codec_of_node = codec_node;
 141         odroidx2_dai[0].cpu_of_node = i2s_node;
 142         odroidx2_dai[0].platform_of_node = i2s_node;
 143
 144         ret = snd_soc_register_card(card);
 145         if (ret) {
 146                 dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
 147                         ret);
 148                 goto err_put_i2s_n;
 149         }
 150         return 0;
 151
 152 err_put_i2s_n:
 153         of_node_put(i2s_node);
 154 err_put_codec_n:
 155         of_node_put(codec_node);
 156         return ret;
 157 }
 158
 159 static int odroidx2_audio_remove(struct platform_device *pdev)
 160 {
 161         struct snd_soc_card *card = platform_get_drvdata(pdev);
 162
 163         snd_soc_unregister_card(card);
 164
 165         of_node_put(odroidx2_dai[0].cpu_of_node);
 166         of_node_put(odroidx2_dai[0].codec_of_node);
 167
 168         return 0;
 169 }
 170
 171 static struct platform_driver odroidx2_audio_driver = {
 172         .driver = {
 173                 .name           = "odroidx2-audio",
 174                 .of_match_table = odroidx2_audio_of_match,
 175                 .pm             = &snd_soc_pm_ops,
 176         },
 177         .probe  = odroidx2_audio_probe,
 178         .remove = odroidx2_audio_remove,
 179 };
 180 module_platform_driver(odroidx2_audio_driver);
 181
 182 MODULE_AUTHOR("Chen Zhen <zhen1.chen@samsung.com>");
 183 MODULE_AUTHOR("Sylwester Nawrocki <s.nawrocki@samsung.com>");
 184 MODULE_DESCRIPTION("ALSA SoC Odroid X2/U3 Audio Support");
 185 MODULE_LICENSE("GPL v2");