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Linux/sound/soc/blackfin/bfin-eval-adau1701.c

  1 /*
  2  * Machine driver for EVAL-ADAU1701MINIZ on Analog Devices bfin
  3  * evaluation boards.
  4  *
  5  * Copyright 2011 Analog Devices Inc.
  6  * Author: Lars-Peter Clausen <lars@metafoo.de>
  7  *
  8  * Licensed under the GPL-2 or later.
  9  */
 10 
 11 #include <linux/module.h>
 12 #include <linux/device.h>
 13 #include <sound/core.h>
 14 #include <sound/pcm.h>
 15 #include <sound/soc.h>
 16 #include <sound/pcm_params.h>
 17 
 18 #include "../codecs/adau1701.h"
 19 
 20 static const struct snd_soc_dapm_widget bfin_eval_adau1701_dapm_widgets[] = {
 21         SND_SOC_DAPM_SPK("Speaker", NULL),
 22         SND_SOC_DAPM_LINE("Line Out", NULL),
 23         SND_SOC_DAPM_LINE("Line In", NULL),
 24 };
 25 
 26 static const struct snd_soc_dapm_route bfin_eval_adau1701_dapm_routes[] = {
 27         { "Speaker", NULL, "OUT0" },
 28         { "Speaker", NULL, "OUT1" },
 29         { "Line Out", NULL, "OUT2" },
 30         { "Line Out", NULL, "OUT3" },
 31 
 32         { "IN0", NULL, "Line In" },
 33         { "IN1", NULL, "Line In" },
 34 };
 35 
 36 static int bfin_eval_adau1701_hw_params(struct snd_pcm_substream *substream,
 37         struct snd_pcm_hw_params *params)
 38 {
 39         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 40         struct snd_soc_dai *codec_dai = rtd->codec_dai;
 41         int ret;
 42 
 43         ret = snd_soc_dai_set_sysclk(codec_dai, ADAU1701_CLK_SRC_OSC, 12288000,
 44                         SND_SOC_CLOCK_IN);
 45 
 46         return ret;
 47 }
 48 
 49 static struct snd_soc_ops bfin_eval_adau1701_ops = {
 50         .hw_params = bfin_eval_adau1701_hw_params,
 51 };
 52 
 53 #define BFIN_EVAL_ADAU1701_DAI_FMT (SND_SOC_DAIFMT_I2S | \
 54                                 SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBM_CFM)
 55 
 56 static struct snd_soc_dai_link bfin_eval_adau1701_dai[] = {
 57         {
 58                 .name = "adau1701",
 59                 .stream_name = "adau1701",
 60                 .cpu_dai_name = "bfin-i2s.0",
 61                 .codec_dai_name = "adau1701",
 62                 .platform_name = "bfin-i2s-pcm-audio",
 63                 .codec_name = "adau1701.0-0034",
 64                 .ops = &bfin_eval_adau1701_ops,
 65                 .dai_fmt = BFIN_EVAL_ADAU1701_DAI_FMT,
 66         },
 67         {
 68                 .name = "adau1701",
 69                 .stream_name = "adau1701",
 70                 .cpu_dai_name = "bfin-i2s.1",
 71                 .codec_dai_name = "adau1701",
 72                 .platform_name = "bfin-i2s-pcm-audio",
 73                 .codec_name = "adau1701.0-0034",
 74                 .ops = &bfin_eval_adau1701_ops,
 75                 .dai_fmt = BFIN_EVAL_ADAU1701_DAI_FMT,
 76         },
 77 };
 78 
 79 static struct snd_soc_card bfin_eval_adau1701 = {
 80         .name = "bfin-eval-adau1701",
 81         .owner = THIS_MODULE,
 82         .dai_link = &bfin_eval_adau1701_dai[CONFIG_SND_BF5XX_SPORT_NUM],
 83         .num_links = 1,
 84 
 85         .dapm_widgets           = bfin_eval_adau1701_dapm_widgets,
 86         .num_dapm_widgets       = ARRAY_SIZE(bfin_eval_adau1701_dapm_widgets),
 87         .dapm_routes            = bfin_eval_adau1701_dapm_routes,
 88         .num_dapm_routes        = ARRAY_SIZE(bfin_eval_adau1701_dapm_routes),
 89 };
 90 
 91 static int bfin_eval_adau1701_probe(struct platform_device *pdev)
 92 {
 93         struct snd_soc_card *card = &bfin_eval_adau1701;
 94 
 95         card->dev = &pdev->dev;
 96 
 97         return snd_soc_register_card(&bfin_eval_adau1701);
 98 }
 99 
100 static int bfin_eval_adau1701_remove(struct platform_device *pdev)
101 {
102         struct snd_soc_card *card = platform_get_drvdata(pdev);
103 
104         snd_soc_unregister_card(card);
105 
106         return 0;
107 }
108 
109 static struct platform_driver bfin_eval_adau1701_driver = {
110         .driver = {
111                 .name = "bfin-eval-adau1701",
112                 .owner = THIS_MODULE,
113                 .pm = &snd_soc_pm_ops,
114         },
115         .probe = bfin_eval_adau1701_probe,
116         .remove = bfin_eval_adau1701_remove,
117 };
118 
119 module_platform_driver(bfin_eval_adau1701_driver);
120 
121 MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
122 MODULE_DESCRIPTION("ALSA SoC bfin ADAU1701 driver");
123 MODULE_LICENSE("GPL");
124 MODULE_ALIAS("platform:bfin-eval-adau1701");
125 

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