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 <plat/audio.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        struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
  29        int ret;
  30        unsigned int freq, fmt;
  31
  32        fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBS_CFS;
  33        ret = snd_soc_dai_set_fmt(cpu_dai, fmt);
  34        if (ret < 0)
  35                return ret;
  36
  37        ret = snd_soc_dai_set_fmt(codec_dai, fmt);
  38        if (ret < 0)
  39                return ret;
  40
  41        freq = params_rate(params) * 256;
  42
  43        return snd_soc_dai_set_sysclk(codec_dai, 0, freq, SND_SOC_CLOCK_IN);
  44
  45}
  46
  47static struct snd_soc_ops t5325_ops = {
  48        .hw_params = t5325_hw_params,
  49};
  50
  51static const struct snd_soc_dapm_widget t5325_dapm_widgets[] = {
  52        SND_SOC_DAPM_HP("Headphone Jack", NULL),
  53        SND_SOC_DAPM_SPK("Speaker", NULL),
  54        SND_SOC_DAPM_MIC("Mic Jack", NULL),
  55};
  56
  57static const struct snd_soc_dapm_route t5325_route[] = {
  58        { "Headphone Jack",     NULL,   "HPL" },
  59        { "Headphone Jack",     NULL,   "HPR" },
  60
  61        {"Speaker",             NULL,   "SPKOUT"},
  62        {"Speaker",             NULL,   "SPKOUTN"},
  63
  64        { "MIC1",               NULL,   "Mic Jack" },
  65        { "MIC2",               NULL,   "Mic Jack" },
  66};
  67
  68static int t5325_dai_init(struct snd_soc_pcm_runtime *rtd)
  69{
  70        struct snd_soc_codec *codec = rtd->codec;
  71        struct snd_soc_dapm_context *dapm = &codec->dapm;
  72
  73        snd_soc_dapm_new_controls(dapm, t5325_dapm_widgets,
  74                                ARRAY_SIZE(t5325_dapm_widgets));
  75
  76        snd_soc_dapm_add_routes(dapm, t5325_route, ARRAY_SIZE(t5325_route));
  77
  78        snd_soc_dapm_enable_pin(dapm, "Mic Jack");
  79        snd_soc_dapm_enable_pin(dapm, "Headphone Jack");
  80        snd_soc_dapm_enable_pin(dapm, "Speaker");
  81
  82        snd_soc_dapm_sync(dapm);
  83
  84        return 0;
  85}
  86
  87static struct snd_soc_dai_link t5325_dai[] = {
  88{
  89        .name = "ALC5621",
  90        .stream_name = "ALC5621 HiFi",
  91        .cpu_dai_name = "kirkwood-i2s",
  92        .platform_name = "kirkwood-pcm-audio",
  93        .codec_dai_name = "alc5621-hifi",
  94        .codec_name = "alc562x-codec.0-001a",
  95        .ops = &t5325_ops,
  96        .init = t5325_dai_init,
  97},
  98};
  99
 100
 101static struct snd_soc_card t5325 = {
 102        .name = "t5325",
 103        .dai_link = t5325_dai,
 104        .num_links = ARRAY_SIZE(t5325_dai),
 105};
 106
 107static struct platform_device *t5325_snd_device;
 108
 109static int __init t5325_init(void)
 110{
 111        int ret;
 112
 113        if (!machine_is_t5325())
 114                return 0;
 115
 116        t5325_snd_device = platform_device_alloc("soc-audio", -1);
 117        if (!t5325_snd_device)
 118                return -ENOMEM;
 119
 120        platform_set_drvdata(t5325_snd_device,
 121                        &t5325);
 122
 123        ret = platform_device_add(t5325_snd_device);
 124        if (ret) {
 125                printk(KERN_ERR "%s: platform_device_add failed\n", __func__);
 126                platform_device_put(t5325_snd_device);
 127        }
 128
 129        return ret;
 130}
 131module_init(t5325_init);
 132
 133static void __exit t5325_exit(void)
 134{
 135        platform_device_unregister(t5325_snd_device);
 136}
 137module_exit(t5325_exit);
 138
 139MODULE_AUTHOR("Arnaud Patard <arnaud.patard@rtp-net.org>");
 140MODULE_DESCRIPTION("ALSA SoC t5325 audio client");
 141MODULE_LICENSE("GPL");
 142