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         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
  47 static struct snd_soc_ops t5325_ops = {
  48         .hw_params = t5325_hw_params,
  49 };
  50
  51 static 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
  57 static 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
  68 static 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         return 0;
  83 }
  84
  85 static struct snd_soc_dai_link t5325_dai[] = {
  86 {
  87         .name = "ALC5621",
  88         .stream_name = "ALC5621 HiFi",
  89         .cpu_dai_name = "kirkwood-i2s",
  90         .platform_name = "kirkwood-pcm-audio",
  91         .codec_dai_name = "alc5621-hifi",
  92         .codec_name = "alc562x-codec.0-001a",
  93         .ops = &t5325_ops,
  94         .init = t5325_dai_init,
  95 },
  96 };
  97
  98
  99 static struct snd_soc_card t5325 = {
 100         .name = "t5325",
 101         .dai_link = t5325_dai,
 102         .num_links = ARRAY_SIZE(t5325_dai),
 103 };
 104
 105 static struct platform_device *t5325_snd_device;
 106
 107 static int __init t5325_init(void)
 108 {
 109         int ret;
 110
 111         if (!machine_is_t5325())
 112                 return 0;
 113
 114         t5325_snd_device = platform_device_alloc("soc-audio", -1);
 115         if (!t5325_snd_device)
 116                 return -ENOMEM;
 117
 118         platform_set_drvdata(t5325_snd_device,
 119                         &t5325);
 120
 121         ret = platform_device_add(t5325_snd_device);
 122         if (ret) {
 123                 printk(KERN_ERR "%s: platform_device_add failed\n", __func__);
 124                 platform_device_put(t5325_snd_device);
 125         }
 126
 127         return ret;
 128 }
 129 module_init(t5325_init);
 130
 131 static void __exit t5325_exit(void)
 132 {
 133         platform_device_unregister(t5325_snd_device);
 134 }
 135 module_exit(t5325_exit);
 136
 137 MODULE_AUTHOR("Arnaud Patard <arnaud.patard@rtp-net.org>");
 138 MODULE_DESCRIPTION("ALSA SoC t5325 audio client");
 139 MODULE_LICENSE("GPL");