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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 <linux/platform_data/asoc-kirkwood.h>
 19 #include "../codecs/alc5623.h"
 20 
 21 static int t5325_hw_params(struct snd_pcm_substream *substream,
 22                 struct snd_pcm_hw_params *params)
 23 {
 24         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 25         struct snd_soc_dai *codec_dai = rtd->codec_dai;
 26         unsigned int freq;
 27 
 28         freq = params_rate(params) * 256;
 29 
 30         return snd_soc_dai_set_sysclk(codec_dai, 0, freq, SND_SOC_CLOCK_IN);
 31 
 32 }
 33 
 34 static struct snd_soc_ops t5325_ops = {
 35         .hw_params = t5325_hw_params,
 36 };
 37 
 38 static const struct snd_soc_dapm_widget t5325_dapm_widgets[] = {
 39         SND_SOC_DAPM_HP("Headphone Jack", NULL),
 40         SND_SOC_DAPM_SPK("Speaker", NULL),
 41         SND_SOC_DAPM_MIC("Mic Jack", NULL),
 42 };
 43 
 44 static const struct snd_soc_dapm_route t5325_route[] = {
 45         { "Headphone Jack",     NULL,   "HPL" },
 46         { "Headphone Jack",     NULL,   "HPR" },
 47 
 48         {"Speaker",             NULL,   "SPKOUT"},
 49         {"Speaker",             NULL,   "SPKOUTN"},
 50 
 51         { "MIC1",               NULL,   "Mic Jack" },
 52         { "MIC2",               NULL,   "Mic Jack" },
 53 };
 54 
 55 static struct snd_soc_dai_link t5325_dai[] = {
 56 {
 57         .name = "ALC5621",
 58         .stream_name = "ALC5621 HiFi",
 59         .cpu_dai_name = "i2s",
 60         .platform_name = "mvebu-audio",
 61         .codec_dai_name = "alc5621-hifi",
 62         .codec_name = "alc562x-codec.0-001a",
 63         .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBS_CFS,
 64         .ops = &t5325_ops,
 65 },
 66 };
 67 
 68 static struct snd_soc_card t5325 = {
 69         .name = "t5325",
 70         .owner = THIS_MODULE,
 71         .dai_link = t5325_dai,
 72         .num_links = ARRAY_SIZE(t5325_dai),
 73 
 74         .dapm_widgets = t5325_dapm_widgets,
 75         .num_dapm_widgets = ARRAY_SIZE(t5325_dapm_widgets),
 76         .dapm_routes = t5325_route,
 77         .num_dapm_routes = ARRAY_SIZE(t5325_route),
 78 };
 79 
 80 static int t5325_probe(struct platform_device *pdev)
 81 {
 82         struct snd_soc_card *card = &t5325;
 83         int ret;
 84 
 85         card->dev = &pdev->dev;
 86 
 87         ret = snd_soc_register_card(card);
 88         if (ret)
 89                 dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
 90                         ret);
 91         return ret;
 92 }
 93 
 94 static int t5325_remove(struct platform_device *pdev)
 95 {
 96         struct snd_soc_card *card = platform_get_drvdata(pdev);
 97 
 98         snd_soc_unregister_card(card);
 99         return 0;
100 }
101 
102 static struct platform_driver t5325_driver = {
103         .driver         = {
104                 .name   = "t5325-audio",
105                 .owner  = THIS_MODULE,
106         },
107         .probe          = t5325_probe,
108         .remove         = t5325_remove,
109 };
110 
111 module_platform_driver(t5325_driver);
112 
113 MODULE_AUTHOR("Arnaud Patard <arnaud.patard@rtp-net.org>");
114 MODULE_DESCRIPTION("ALSA SoC t5325 audio client");
115 MODULE_LICENSE("GPL");
116 MODULE_ALIAS("platform:t5325-audio");
117 

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