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
  23 static 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
  36 static struct snd_soc_ops t5325_ops = {
  37         .hw_params = t5325_hw_params,
  38 };
  39
  40 static 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
  46 static 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
  57 static 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
  69 static 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
  83
  84 static struct snd_soc_card t5325 = {
  85         .name = "t5325",
  86         .owner = THIS_MODULE,
  87         .dai_link = t5325_dai,
  88         .num_links = ARRAY_SIZE(t5325_dai),
  89
  90         .dapm_widgets = t5325_dapm_widgets,
  91         .num_dapm_widgets = ARRAY_SIZE(t5325_dapm_widgets),
  92         .dapm_routes = t5325_route,
  93         .num_dapm_routes = ARRAY_SIZE(t5325_route),
  94 };
  95
  96 static struct platform_device *t5325_snd_device;
  97
  98 static int __init t5325_init(void)
  99 {
 100         int ret;
 101
 102         if (!machine_is_t5325())
 103                 return 0;
 104
 105         t5325_snd_device = platform_device_alloc("soc-audio", -1);
 106         if (!t5325_snd_device)
 107                 return -ENOMEM;
 108
 109         platform_set_drvdata(t5325_snd_device,
 110                         &t5325);
 111
 112         ret = platform_device_add(t5325_snd_device);
 113         if (ret) {
 114                 printk(KERN_ERR "%s: platform_device_add failed\n", __func__);
 115                 platform_device_put(t5325_snd_device);
 116         }
 117
 118         return ret;
 119 }
 120 module_init(t5325_init);
 121
 122 static void __exit t5325_exit(void)
 123 {
 124         platform_device_unregister(t5325_snd_device);
 125 }
 126 module_exit(t5325_exit);
 127
 128 MODULE_AUTHOR("Arnaud Patard <arnaud.patard@rtp-net.org>");
 129 MODULE_DESCRIPTION("ALSA SoC t5325 audio client");
 130 MODULE_LICENSE("GPL");