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