LXR linux/sound/soc/kirkwood/kirkwood-t5325.c

   1/*
   2 * kirkwood-t5325.c
   3 *
   4 * (c) 2010 Arnaud Patard <arnaud.patard@rtp-net.org>
   5 *
   6 *  This program is free software; you can redistribute  it and/or modify it
   7 *  under  the terms of  the GNU General  Public License as published by the
   8 *  Free Software Foundation;  either version 2 of the  License, or (at your
   9 *  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 <mach/kirkwood.h>
  19#include <linux/platform_data/asoc-kirkwood.h>
  20#include <asm/mach-types.h>
  21#include "../codecs/alc5623.h"
  22
  23static int t5325_hw_params(struct snd_pcm_substream *substream,
  24                struct snd_pcm_hw_params *params)
  25{
  26        struct snd_soc_pcm_runtime *rtd = substream->private_data;
  27        struct snd_soc_dai *codec_dai = rtd->codec_dai;
  28        unsigned int freq;
  29
  30        freq = params_rate(params) * 256;
  31
  32        return snd_soc_dai_set_sysclk(codec_dai, 0, freq, SND_SOC_CLOCK_IN);
  33
  34}
  35
  36static struct snd_soc_ops t5325_ops = {
  37        .hw_params = t5325_hw_params,
  38};
  39
  40static const struct snd_soc_dapm_widget t5325_dapm_widgets[] = {
  41        SND_SOC_DAPM_HP("Headphone Jack", NULL),
  42        SND_SOC_DAPM_SPK("Speaker", NULL),
  43        SND_SOC_DAPM_MIC("Mic Jack", NULL),
  44};
  45
  46static const struct snd_soc_dapm_route t5325_route[] = {
  47        { "Headphone Jack",     NULL,   "HPL" },
  48        { "Headphone Jack",     NULL,   "HPR" },
  49
  50        {"Speaker",             NULL,   "SPKOUT"},
  51        {"Speaker",             NULL,   "SPKOUTN"},
  52
  53        { "MIC1",               NULL,   "Mic Jack" },
  54        { "MIC2",               NULL,   "Mic Jack" },
  55};
  56
  57static int t5325_dai_init(struct snd_soc_pcm_runtime *rtd)
  58{
  59        struct snd_soc_codec *codec = rtd->codec;
  60        struct snd_soc_dapm_context *dapm = &codec->dapm;
  61
  62        snd_soc_dapm_enable_pin(dapm, "Mic Jack");
  63        snd_soc_dapm_enable_pin(dapm, "Headphone Jack");
  64        snd_soc_dapm_enable_pin(dapm, "Speaker");
  65
  66        return 0;
  67}
  68
  69static struct snd_soc_dai_link t5325_dai[] = {
  70{
  71        .name = "ALC5621",
  72        .stream_name = "ALC5621 HiFi",
  73        .cpu_dai_name = "kirkwood-i2s",
  74        .platform_name = "kirkwood-pcm-audio",
  75        .codec_dai_name = "alc5621-hifi",
  76        .codec_name = "alc562x-codec.0-001a",
  77        .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBS_CFS,
  78        .ops = &t5325_ops,
  79        .init = t5325_dai_init,
  80},
  81};
  82
  83static struct snd_soc_card t5325 = {
  84        .name = "t5325",
  85        .owner = THIS_MODULE,
  86        .dai_link = t5325_dai,
  87        .num_links = ARRAY_SIZE(t5325_dai),
  88
  89        .dapm_widgets = t5325_dapm_widgets,
  90        .num_dapm_widgets = ARRAY_SIZE(t5325_dapm_widgets),
  91        .dapm_routes = t5325_route,
  92        .num_dapm_routes = ARRAY_SIZE(t5325_route),
  93};
  94
  95static int __devinit t5325_probe(struct platform_device *pdev)
  96{
  97        struct snd_soc_card *card = &t5325;
  98        int ret;
  99
 100        card->dev = &pdev->dev;
 101
 102        ret = snd_soc_register_card(card);
 103        if (ret)
 104                dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
 105                        ret);
 106        return ret;
 107}
 108
 109static int __devexit t5325_remove(struct platform_device *pdev)
 110{
 111        struct snd_soc_card *card = platform_get_drvdata(pdev);
 112
 113        snd_soc_unregister_card(card);
 114        return 0;
 115}
 116
 117static struct platform_driver t5325_driver = {
 118        .driver         = {
 119                .name   = "t5325-audio",
 120                .owner  = THIS_MODULE,
 121        },
 122        .probe          = t5325_probe,
 123        .remove         = __devexit_p(t5325_remove),
 124};
 125
 126module_platform_driver(t5325_driver);
 127
 128MODULE_AUTHOR("Arnaud Patard <arnaud.patard@rtp-net.org>");
 129MODULE_DESCRIPTION("ALSA SoC t5325 audio client");
 130MODULE_LICENSE("GPL");
 131MODULE_ALIAS("platform:t5325-audio");
 132