linux/sound/soc/kirkwood/armada-370-db.c
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   1// SPDX-License-Identifier: GPL-2.0-or-later
   2/*
   3 * Copyright (C) 2014 Marvell
   4 *
   5 * Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
   6 */
   7
   8#include <linux/module.h>
   9#include <linux/moduleparam.h>
  10#include <linux/interrupt.h>
  11#include <linux/platform_device.h>
  12#include <linux/slab.h>
  13#include <sound/soc.h>
  14#include <linux/of.h>
  15#include <linux/platform_data/asoc-kirkwood.h>
  16#include "../codecs/cs42l51.h"
  17
  18static int a370db_hw_params(struct snd_pcm_substream *substream,
  19                            struct snd_pcm_hw_params *params)
  20{
  21        struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
  22        struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
  23        unsigned int freq;
  24
  25        switch (params_rate(params)) {
  26        default:
  27        case 44100:
  28                freq = 11289600;
  29                break;
  30        case 48000:
  31                freq = 12288000;
  32                break;
  33        case 96000:
  34                freq = 24576000;
  35                break;
  36        }
  37
  38        return snd_soc_dai_set_sysclk(codec_dai, 0, freq, SND_SOC_CLOCK_IN);
  39}
  40
  41static const struct snd_soc_ops a370db_ops = {
  42        .hw_params = a370db_hw_params,
  43};
  44
  45static const struct snd_soc_dapm_widget a370db_dapm_widgets[] = {
  46        SND_SOC_DAPM_HP("Out Jack", NULL),
  47        SND_SOC_DAPM_LINE("In Jack", NULL),
  48};
  49
  50static const struct snd_soc_dapm_route a370db_route[] = {
  51        { "Out Jack",   NULL,   "HPL" },
  52        { "Out Jack",   NULL,   "HPR" },
  53        { "AIN1L",      NULL,   "In Jack" },
  54        { "AIN1L",      NULL,   "In Jack" },
  55};
  56
  57SND_SOC_DAILINK_DEFS(analog,
  58        DAILINK_COMP_ARRAY(COMP_CPU("i2s")),
  59        DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "cs42l51-hifi")),
  60        DAILINK_COMP_ARRAY(COMP_EMPTY()));
  61
  62SND_SOC_DAILINK_DEFS(spdif_out,
  63        DAILINK_COMP_ARRAY(COMP_CPU("spdif")),
  64        DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "dit-hifi")),
  65        DAILINK_COMP_ARRAY(COMP_EMPTY()));
  66
  67SND_SOC_DAILINK_DEFS(spdif_in,
  68        DAILINK_COMP_ARRAY(COMP_CPU("spdif")),
  69        DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "dir-hifi")),
  70        DAILINK_COMP_ARRAY(COMP_EMPTY()));
  71
  72static struct snd_soc_dai_link a370db_dai[] = {
  73{
  74        .name = "CS42L51",
  75        .stream_name = "analog",
  76        .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBS_CFS,
  77        .ops = &a370db_ops,
  78        SND_SOC_DAILINK_REG(analog),
  79},
  80{
  81        .name = "S/PDIF out",
  82        .stream_name = "spdif-out",
  83        .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBS_CFS,
  84        SND_SOC_DAILINK_REG(spdif_out),
  85},
  86{
  87        .name = "S/PDIF in",
  88        .stream_name = "spdif-in",
  89        .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBS_CFS,
  90        SND_SOC_DAILINK_REG(spdif_in),
  91},
  92};
  93
  94static struct snd_soc_card a370db = {
  95        .name = "a370db",
  96        .owner = THIS_MODULE,
  97        .dai_link = a370db_dai,
  98        .num_links = ARRAY_SIZE(a370db_dai),
  99        .dapm_widgets = a370db_dapm_widgets,
 100        .num_dapm_widgets = ARRAY_SIZE(a370db_dapm_widgets),
 101        .dapm_routes = a370db_route,
 102        .num_dapm_routes = ARRAY_SIZE(a370db_route),
 103};
 104
 105static int a370db_probe(struct platform_device *pdev)
 106{
 107        struct snd_soc_card *card = &a370db;
 108
 109        card->dev = &pdev->dev;
 110
 111        a370db_dai[0].cpus->of_node =
 112                of_parse_phandle(pdev->dev.of_node,
 113                                 "marvell,audio-controller", 0);
 114        a370db_dai[0].platforms->of_node = a370db_dai[0].cpus->of_node;
 115
 116        a370db_dai[0].codecs->of_node =
 117                of_parse_phandle(pdev->dev.of_node,
 118                                 "marvell,audio-codec", 0);
 119
 120        a370db_dai[1].cpus->of_node = a370db_dai[0].cpus->of_node;
 121        a370db_dai[1].platforms->of_node = a370db_dai[0].cpus->of_node;
 122
 123        a370db_dai[1].codecs->of_node =
 124                of_parse_phandle(pdev->dev.of_node,
 125                                 "marvell,audio-codec", 1);
 126
 127        a370db_dai[2].cpus->of_node = a370db_dai[0].cpus->of_node;
 128        a370db_dai[2].platforms->of_node = a370db_dai[0].cpus->of_node;
 129
 130        a370db_dai[2].codecs->of_node =
 131                of_parse_phandle(pdev->dev.of_node,
 132                                 "marvell,audio-codec", 2);
 133
 134        return devm_snd_soc_register_card(card->dev, card);
 135}
 136
 137static const struct of_device_id a370db_dt_ids[] __maybe_unused = {
 138        { .compatible = "marvell,a370db-audio" },
 139        { },
 140};
 141MODULE_DEVICE_TABLE(of, a370db_dt_ids);
 142
 143static struct platform_driver a370db_driver = {
 144        .driver         = {
 145                .name   = "a370db-audio",
 146                .of_match_table = of_match_ptr(a370db_dt_ids),
 147        },
 148        .probe          = a370db_probe,
 149};
 150
 151module_platform_driver(a370db_driver);
 152
 153MODULE_AUTHOR("Thomas Petazzoni <thomas.petazzoni@free-electrons.com>");
 154MODULE_DESCRIPTION("ALSA SoC a370db audio client");
 155MODULE_LICENSE("GPL");
 156MODULE_ALIAS("platform:a370db-audio");
 157