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