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 <sound/soc-dapm.h>
  19 #include <mach/kirkwood.h>
  20 #include <plat/audio.h>
  21 #include <asm/mach-types.h>
  22 #include "../codecs/alc5623.h"
  23
  24 static int t5325_hw_params(struct snd_pcm_substream *substream,
  25                 struct snd_pcm_hw_params *params)
  26 {
  27         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  28         struct snd_soc_dai *codec_dai = rtd->codec_dai;
  29         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
  30         int ret;
  31         unsigned int freq, fmt;
  32
  33         fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBS_CFS;
  34         ret = snd_soc_dai_set_fmt(cpu_dai, fmt);
  35         if (ret < 0)
  36                 return ret;
  37
  38         ret = snd_soc_dai_set_fmt(codec_dai, fmt);
  39         if (ret < 0)
  40                 return ret;
  41
  42         freq = params_rate(params) * 256;
  43
  44         return snd_soc_dai_set_sysclk(codec_dai, 0, freq, SND_SOC_CLOCK_IN);
  45
  46 }
  47
  48 static struct snd_soc_ops t5325_ops = {
  49         .hw_params = t5325_hw_params,
  50 };
  51
  52 static const struct snd_soc_dapm_widget t5325_dapm_widgets[] = {
  53         SND_SOC_DAPM_HP("Headphone Jack", NULL),
  54         SND_SOC_DAPM_SPK("Speaker", NULL),
  55         SND_SOC_DAPM_MIC("Mic Jack", NULL),
  56 };
  57
  58 static const struct snd_soc_dapm_route t5325_route[] = {
  59         { "Headphone Jack",     NULL,   "HPL" },
  60         { "Headphone Jack",     NULL,   "HPR" },
  61
  62         {"Speaker",             NULL,   "SPKOUT"},
  63         {"Speaker",             NULL,   "SPKOUTN"},
  64
  65         { "MIC1",               NULL,   "Mic Jack" },
  66         { "MIC2",               NULL,   "Mic Jack" },
  67 };
  68
  69 static int t5325_dai_init(struct snd_soc_pcm_runtime *rtd)
  70 {
  71         struct snd_soc_codec *codec = rtd->codec;
  72         struct snd_soc_dapm_context *dapm = &codec->dapm;
  73
  74         snd_soc_dapm_new_controls(dapm, t5325_dapm_widgets,
  75                                 ARRAY_SIZE(t5325_dapm_widgets));
  76
  77         snd_soc_dapm_add_routes(dapm, t5325_route, ARRAY_SIZE(t5325_route));
  78
  79         snd_soc_dapm_enable_pin(dapm, "Mic Jack");
  80         snd_soc_dapm_enable_pin(dapm, "Headphone Jack");
  81         snd_soc_dapm_enable_pin(dapm, "Speaker");
  82
  83         snd_soc_dapm_sync(dapm);
  84
  85         return 0;
  86 }
  87
  88 static struct snd_soc_dai_link t5325_dai[] = {
  89 {
  90         .name = "ALC5621",
  91         .stream_name = "ALC5621 HiFi",
  92         .cpu_dai_name = "kirkwood-i2s",
  93         .platform_name = "kirkwood-pcm-audio",
  94         .codec_dai_name = "alc5621-hifi",
  95         .codec_name = "alc562x-codec.0-001a",
  96         .ops = &t5325_ops,
  97         .init = t5325_dai_init,
  98 },
  99 };
 100
 101
 102 static struct snd_soc_card t5325 = {
 103         .name = "t5325",
 104         .dai_link = t5325_dai,
 105         .num_links = ARRAY_SIZE(t5325_dai),
 106 };
 107
 108 static struct platform_device *t5325_snd_device;
 109
 110 static int __init t5325_init(void)
 111 {
 112         int ret;
 113
 114         if (!machine_is_t5325())
 115                 return 0;
 116
 117         t5325_snd_device = platform_device_alloc("soc-audio", -1);
 118         if (!t5325_snd_device)
 119                 return -ENOMEM;
 120
 121         platform_set_drvdata(t5325_snd_device,
 122                         &t5325);
 123
 124         ret = platform_device_add(t5325_snd_device);
 125         if (ret) {
 126                 printk(KERN_ERR "%s: platform_device_add failed\n", __func__);
 127                 platform_device_put(t5325_snd_device);
 128         }
 129
 130         return ret;
 131 }
 132 module_init(t5325_init);
 133
 134 static void __exit t5325_exit(void)
 135 {
 136         platform_device_unregister(t5325_snd_device);
 137 }
 138 module_exit(t5325_exit);
 139
 140 MODULE_AUTHOR("Arnaud Patard <arnaud.patard@rtp-net.org>");
 141 MODULE_DESCRIPTION("ALSA SoC t5325 audio client");
 142 MODULE_LICENSE("GPL");