sound/soc/blackfin/bfin-eval-adav80x.c

   1 /*
   2  * Machine driver for EVAL-ADAV801 and EVAL-ADAV803 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/init.h>
  12 #include <linux/platform_device.h>
  13 #include <linux/module.h>
  14 #include <sound/core.h>
  15 #include <sound/pcm.h>
  16 #include <sound/soc.h>
  17
  18 #include "../codecs/adav80x.h"
  19
  20 static const struct snd_soc_dapm_widget bfin_eval_adav80x_dapm_widgets[] = {
  21         SND_SOC_DAPM_LINE("Line Out", NULL),
  22         SND_SOC_DAPM_LINE("Line In", NULL),
  23 };
  24
  25 static const struct snd_soc_dapm_route bfin_eval_adav80x_dapm_routes[] = {
  26         { "Line Out", NULL, "VOUTL" },
  27         { "Line Out", NULL, "VOUTR" },
  28
  29         { "VINL", NULL, "Line In" },
  30         { "VINR", NULL, "Line In" },
  31 };
  32
  33 static int bfin_eval_adav80x_hw_params(struct snd_pcm_substream *substream,
  34         struct snd_pcm_hw_params *params)
  35 {
  36         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  37         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
  38         struct snd_soc_dai *codec_dai = rtd->codec_dai;
  39         int ret;
  40
  41         ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S |
  42                         SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBM_CFM);
  43         if (ret)
  44                 return ret;
  45
  46         ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S |
  47                         SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBM_CFM);
  48         if (ret)
  49                 return ret;
  50
  51         ret = snd_soc_dai_set_pll(codec_dai, ADAV80X_PLL1, ADAV80X_PLL_SRC_XTAL,
  52                         27000000, params_rate(params) * 256);
  53         if (ret)
  54                 return ret;
  55
  56         ret = snd_soc_dai_set_sysclk(codec_dai, ADAV80X_CLK_PLL1,
  57                         params_rate(params) * 256, SND_SOC_CLOCK_IN);
  58
  59         return ret;
  60 }
  61
  62 static int bfin_eval_adav80x_codec_init(struct snd_soc_pcm_runtime *rtd)
  63 {
  64         struct snd_soc_dai *codec_dai = rtd->codec_dai;
  65
  66         snd_soc_dai_set_sysclk(codec_dai, ADAV80X_CLK_SYSCLK1, 0,
  67             SND_SOC_CLOCK_OUT);
  68         snd_soc_dai_set_sysclk(codec_dai, ADAV80X_CLK_SYSCLK2, 0,
  69             SND_SOC_CLOCK_OUT);
  70         snd_soc_dai_set_sysclk(codec_dai, ADAV80X_CLK_SYSCLK3, 0,
  71             SND_SOC_CLOCK_OUT);
  72
  73         snd_soc_dai_set_sysclk(codec_dai, ADAV80X_CLK_XTAL, 2700000, 0);
  74
  75         return 0;
  76 }
  77
  78 static struct snd_soc_ops bfin_eval_adav80x_ops = {
  79         .hw_params = bfin_eval_adav80x_hw_params,
  80 };
  81
  82 static struct snd_soc_dai_link bfin_eval_adav80x_dais[] = {
  83         {
  84                 .name = "adav80x",
  85                 .stream_name = "ADAV80x HiFi",
  86                 .cpu_dai_name = "bfin-i2s.0",
  87                 .codec_dai_name = "adav80x-hifi",
  88                 .platform_name = "bfin-i2s-pcm-audio",
  89                 .init = bfin_eval_adav80x_codec_init,
  90                 .ops = &bfin_eval_adav80x_ops,
  91         },
  92 };
  93
  94 static struct snd_soc_card bfin_eval_adav80x = {
  95         .name = "bfin-eval-adav80x",
  96         .dai_link = bfin_eval_adav80x_dais,
  97         .num_links = ARRAY_SIZE(bfin_eval_adav80x_dais),
  98
  99         .dapm_widgets           = bfin_eval_adav80x_dapm_widgets,
 100         .num_dapm_widgets       = ARRAY_SIZE(bfin_eval_adav80x_dapm_widgets),
 101         .dapm_routes            = bfin_eval_adav80x_dapm_routes,
 102         .num_dapm_routes        = ARRAY_SIZE(bfin_eval_adav80x_dapm_routes),
 103 };
 104
 105 enum bfin_eval_adav80x_type {
 106         BFIN_EVAL_ADAV801,
 107         BFIN_EVAL_ADAV803,
 108 };
 109
 110 static int bfin_eval_adav80x_probe(struct platform_device *pdev)
 111 {
 112         struct snd_soc_card *card = &bfin_eval_adav80x;
 113         const char *codec_name;
 114
 115         switch (platform_get_device_id(pdev)->driver_data) {
 116         case BFIN_EVAL_ADAV801:
 117                 codec_name = "spi0.1";
 118                 break;
 119         case BFIN_EVAL_ADAV803:
 120                 codec_name = "adav803.0-0034";
 121                 break;
 122         default:
 123                 return -EINVAL;
 124         }
 125
 126         bfin_eval_adav80x_dais[0].codec_name = codec_name;
 127
 128         card->dev = &pdev->dev;
 129
 130         return snd_soc_register_card(&bfin_eval_adav80x);
 131 }
 132
 133 static int __devexit bfin_eval_adav80x_remove(struct platform_device *pdev)
 134 {
 135         struct snd_soc_card *card = platform_get_drvdata(pdev);
 136
 137         snd_soc_unregister_card(card);
 138
 139         return 0;
 140 }
 141
 142 static const struct platform_device_id bfin_eval_adav80x_ids[] = {
 143         { "bfin-eval-adav801", BFIN_EVAL_ADAV801 },
 144         { "bfin-eval-adav803", BFIN_EVAL_ADAV803 },
 145         { },
 146 };
 147 MODULE_DEVICE_TABLE(platform, bfin_eval_adav80x_ids);
 148
 149 static struct platform_driver bfin_eval_adav80x_driver = {
 150         .driver = {
 151                 .name = "bfin-eval-adav80x",
 152                 .owner = THIS_MODULE,
 153                 .pm = &snd_soc_pm_ops,
 154         },
 155         .probe = bfin_eval_adav80x_probe,
 156         .remove = __devexit_p(bfin_eval_adav80x_remove),
 157         .id_table = bfin_eval_adav80x_ids,
 158 };
 159
 160 static int __init bfin_eval_adav80x_init(void)
 161 {
 162         return platform_driver_register(&bfin_eval_adav80x_driver);
 163 }
 164 module_init(bfin_eval_adav80x_init);
 165
 166 static void __exit bfin_eval_adav80x_exit(void)
 167 {
 168         platform_driver_unregister(&bfin_eval_adav80x_driver);
 169 }
 170 module_exit(bfin_eval_adav80x_exit);
 171
 172 MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
 173 MODULE_DESCRIPTION("ALSA SoC bfin adav80x driver");
 174 MODULE_LICENSE("GPL");