sound/soc/kirkwood/armada-370-db.c

   1 /*
   2  * Copyright (C) 2014 Marvell
   3  *
   4  * Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU General Public License as
   8  * published by the Free Software Foundation; either version 2 of the
   9  * License, or (at your option) any later version.
  10  */
  11
  12 #include <linux/module.h>
  13 #include <linux/moduleparam.h>
  14 #include <linux/interrupt.h>
  15 #include <linux/platform_device.h>
  16 #include <linux/slab.h>
  17 #include <sound/soc.h>
  18 #include <linux/of.h>
  19 #include <linux/platform_data/asoc-kirkwood.h>
  20 #include "../codecs/cs42l51.h"
  21
  22 static int a370db_hw_params(struct snd_pcm_substream *substream,
  23                             struct snd_pcm_hw_params *params)
  24 {
  25         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  26         struct snd_soc_dai *codec_dai = rtd->codec_dai;
  27         unsigned int freq;
  28
  29         switch (params_rate(params)) {
  30         default:
  31         case 44100:
  32                 freq = 11289600;
  33                 break;
  34         case 48000:
  35                 freq = 12288000;
  36                 break;
  37         case 96000:
  38                 freq = 24576000;
  39                 break;
  40         }
  41
  42         return snd_soc_dai_set_sysclk(codec_dai, 0, freq, SND_SOC_CLOCK_IN);
  43 }
  44
  45 static struct snd_soc_ops a370db_ops = {
  46         .hw_params = a370db_hw_params,
  47 };
  48
  49 static const struct snd_soc_dapm_widget a370db_dapm_widgets[] = {
  50         SND_SOC_DAPM_HP("Out Jack", NULL),
  51         SND_SOC_DAPM_LINE("In Jack", NULL),
  52 };
  53
  54 static const struct snd_soc_dapm_route a370db_route[] = {
  55         { "Out Jack",   NULL,   "HPL" },
  56         { "Out Jack",   NULL,   "HPR" },
  57         { "AIN1L",      NULL,   "In Jack" },
  58         { "AIN1L",      NULL,   "In Jack" },
  59 };
  60
  61 static struct snd_soc_dai_link a370db_dai[] = {
  62 {
  63         .name = "CS42L51",
  64         .stream_name = "analog",
  65         .cpu_dai_name = "i2s",
  66         .codec_dai_name = "cs42l51-hifi",
  67         .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBS_CFS,
  68         .ops = &a370db_ops,
  69 },
  70 {
  71         .name = "S/PDIF out",
  72         .stream_name = "spdif-out",
  73         .cpu_dai_name = "spdif",
  74         .codec_dai_name = "dit-hifi",
  75         .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBS_CFS,
  76 },
  77 {
  78         .name = "S/PDIF in",
  79         .stream_name = "spdif-in",
  80         .cpu_dai_name = "spdif",
  81         .codec_dai_name = "dir-hifi",
  82         .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBS_CFS,
  83 },
  84 };
  85
  86 static struct snd_soc_card a370db = {
  87         .name = "a370db",
  88         .owner = THIS_MODULE,
  89         .dai_link = a370db_dai,
  90         .num_links = ARRAY_SIZE(a370db_dai),
  91         .dapm_widgets = a370db_dapm_widgets,
  92         .num_dapm_widgets = ARRAY_SIZE(a370db_dapm_widgets),
  93         .dapm_routes = a370db_route,
  94         .num_dapm_routes = ARRAY_SIZE(a370db_route),
  95 };
  96
  97 static int a370db_probe(struct platform_device *pdev)
  98 {
  99         struct snd_soc_card *card = &a370db;
 100
 101         card->dev = &pdev->dev;
 102
 103         a370db_dai[0].cpu_of_node =
 104                 of_parse_phandle(pdev->dev.of_node,
 105                                  "marvell,audio-controller", 0);
 106         a370db_dai[0].platform_of_node = a370db_dai[0].cpu_of_node;
 107
 108         a370db_dai[0].codec_of_node =
 109                 of_parse_phandle(pdev->dev.of_node,
 110                                  "marvell,audio-codec", 0);
 111
 112         a370db_dai[1].cpu_of_node = a370db_dai[0].cpu_of_node;
 113         a370db_dai[1].platform_of_node = a370db_dai[0].cpu_of_node;
 114
 115         a370db_dai[1].codec_of_node =
 116                 of_parse_phandle(pdev->dev.of_node,
 117                                  "marvell,audio-codec", 1);
 118
 119         a370db_dai[2].cpu_of_node = a370db_dai[0].cpu_of_node;
 120         a370db_dai[2].platform_of_node = a370db_dai[0].cpu_of_node;
 121
 122         a370db_dai[2].codec_of_node =
 123                 of_parse_phandle(pdev->dev.of_node,
 124                                  "marvell,audio-codec", 2);
 125
 126         return devm_snd_soc_register_card(card->dev, card);
 127 }
 128
 129 static const struct of_device_id a370db_dt_ids[] = {
 130         { .compatible = "marvell,a370db-audio" },
 131         { },
 132 };
 133
 134 static struct platform_driver a370db_driver = {
 135         .driver         = {
 136                 .name   = "a370db-audio",
 137                 .of_match_table = of_match_ptr(a370db_dt_ids),
 138         },
 139         .probe          = a370db_probe,
 140 };
 141
 142 module_platform_driver(a370db_driver);
 143
 144 MODULE_AUTHOR("Thomas Petazzoni <thomas.petazzoni@free-electrons.com>");
 145 MODULE_DESCRIPTION("ALSA SoC a370db audio client");
 146 MODULE_LICENSE("GPL");
 147 MODULE_ALIAS("platform:a370db-audio");