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 *codec_dai = rtd->codec_dai;
  38         int ret;
  39
  40         ret = snd_soc_dai_set_pll(codec_dai, ADAV80X_PLL1, ADAV80X_PLL_SRC_XTAL,
  41                         27000000, params_rate(params) * 256);
  42         if (ret)
  43                 return ret;
  44
  45         ret = snd_soc_dai_set_sysclk(codec_dai, ADAV80X_CLK_PLL1,
  46                         params_rate(params) * 256, SND_SOC_CLOCK_IN);
  47
  48         return ret;
  49 }
  50
  51 static int bfin_eval_adav80x_codec_init(struct snd_soc_pcm_runtime *rtd)
  52 {
  53         struct snd_soc_dai *codec_dai = rtd->codec_dai;
  54
  55         snd_soc_dai_set_sysclk(codec_dai, ADAV80X_CLK_SYSCLK1, 0,
  56             SND_SOC_CLOCK_OUT);
  57         snd_soc_dai_set_sysclk(codec_dai, ADAV80X_CLK_SYSCLK2, 0,
  58             SND_SOC_CLOCK_OUT);
  59         snd_soc_dai_set_sysclk(codec_dai, ADAV80X_CLK_SYSCLK3, 0,
  60             SND_SOC_CLOCK_OUT);
  61
  62         snd_soc_dai_set_sysclk(codec_dai, ADAV80X_CLK_XTAL, 2700000, 0);
  63
  64         return 0;
  65 }
  66
  67 static struct snd_soc_ops bfin_eval_adav80x_ops = {
  68         .hw_params = bfin_eval_adav80x_hw_params,
  69 };
  70
  71 static struct snd_soc_dai_link bfin_eval_adav80x_dais[] = {
  72         {
  73                 .name = "adav80x",
  74                 .stream_name = "ADAV80x HiFi",
  75                 .cpu_dai_name = "bfin-i2s.0",
  76                 .codec_dai_name = "adav80x-hifi",
  77                 .platform_name = "bfin-i2s-pcm-audio",
  78                 .init = bfin_eval_adav80x_codec_init,
  79                 .ops = &bfin_eval_adav80x_ops,
  80                 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
  81                                 SND_SOC_DAIFMT_CBM_CFM,
  82         },
  83 };
  84
  85 static struct snd_soc_card bfin_eval_adav80x = {
  86         .name = "bfin-eval-adav80x",
  87         .owner = THIS_MODULE,
  88         .dai_link = bfin_eval_adav80x_dais,
  89         .num_links = ARRAY_SIZE(bfin_eval_adav80x_dais),
  90
  91         .dapm_widgets           = bfin_eval_adav80x_dapm_widgets,
  92         .num_dapm_widgets       = ARRAY_SIZE(bfin_eval_adav80x_dapm_widgets),
  93         .dapm_routes            = bfin_eval_adav80x_dapm_routes,
  94         .num_dapm_routes        = ARRAY_SIZE(bfin_eval_adav80x_dapm_routes),
  95 };
  96
  97 enum bfin_eval_adav80x_type {
  98         BFIN_EVAL_ADAV801,
  99         BFIN_EVAL_ADAV803,
 100 };
 101
 102 static int bfin_eval_adav80x_probe(struct platform_device *pdev)
 103 {
 104         struct snd_soc_card *card = &bfin_eval_adav80x;
 105         const char *codec_name;
 106
 107         switch (platform_get_device_id(pdev)->driver_data) {
 108         case BFIN_EVAL_ADAV801:
 109                 codec_name = "spi0.1";
 110                 break;
 111         case BFIN_EVAL_ADAV803:
 112                 codec_name = "adav803.0-0034";
 113                 break;
 114         default:
 115                 return -EINVAL;
 116         }
 117
 118         bfin_eval_adav80x_dais[0].codec_name = codec_name;
 119
 120         card->dev = &pdev->dev;
 121
 122         return snd_soc_register_card(&bfin_eval_adav80x);
 123 }
 124
 125 static int bfin_eval_adav80x_remove(struct platform_device *pdev)
 126 {
 127         struct snd_soc_card *card = platform_get_drvdata(pdev);
 128
 129         snd_soc_unregister_card(card);
 130
 131         return 0;
 132 }
 133
 134 static const struct platform_device_id bfin_eval_adav80x_ids[] = {
 135         { "bfin-eval-adav801", BFIN_EVAL_ADAV801 },
 136         { "bfin-eval-adav803", BFIN_EVAL_ADAV803 },
 137         { },
 138 };
 139 MODULE_DEVICE_TABLE(platform, bfin_eval_adav80x_ids);
 140
 141 static struct platform_driver bfin_eval_adav80x_driver = {
 142         .driver = {
 143                 .name = "bfin-eval-adav80x",
 144                 .owner = THIS_MODULE,
 145                 .pm = &snd_soc_pm_ops,
 146         },
 147         .probe = bfin_eval_adav80x_probe,
 148         .remove = bfin_eval_adav80x_remove,
 149         .id_table = bfin_eval_adav80x_ids,
 150 };
 151
 152 module_platform_driver(bfin_eval_adav80x_driver);
 153
 154 MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
 155 MODULE_DESCRIPTION("ALSA SoC bfin adav80x driver");
 156 MODULE_LICENSE("GPL");