kernel/sound/soc/blackfin/bfin-eval-adau1x61.c

   1 /*
   2  * Machine driver for EVAL-ADAU1x61MINIZ on Analog Devices bfin
   3  * evaluation boards.
   4  *
   5  * Copyright 2011-2014 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 <linux/slab.h>
  14 #include <sound/core.h>
  15 #include <sound/pcm.h>
  16 #include <sound/soc.h>
  17 #include <sound/pcm_params.h>
  18
  19 #include "../codecs/adau17x1.h"
  20
  21 static const struct snd_soc_dapm_widget bfin_eval_adau1x61_dapm_widgets[] = {
  22         SND_SOC_DAPM_LINE("In 1", NULL),
  23         SND_SOC_DAPM_LINE("In 2", NULL),
  24         SND_SOC_DAPM_LINE("In 3-4", NULL),
  25
  26         SND_SOC_DAPM_LINE("Diff Out L", NULL),
  27         SND_SOC_DAPM_LINE("Diff Out R", NULL),
  28         SND_SOC_DAPM_LINE("Stereo Out", NULL),
  29         SND_SOC_DAPM_HP("Capless HP Out", NULL),
  30 };
  31
  32 static const struct snd_soc_dapm_route bfin_eval_adau1x61_dapm_routes[] = {
  33         { "LAUX", NULL, "In 3-4" },
  34         { "RAUX", NULL, "In 3-4" },
  35         { "LINP", NULL, "In 1" },
  36         { "LINN", NULL, "In 1"},
  37         { "RINP", NULL, "In 2" },
  38         { "RINN", NULL, "In 2" },
  39
  40         { "In 1", NULL, "MICBIAS" },
  41         { "In 2", NULL, "MICBIAS" },
  42
  43         { "Capless HP Out", NULL, "LHP" },
  44         { "Capless HP Out", NULL, "RHP" },
  45         { "Diff Out L", NULL, "LOUT" },
  46         { "Diff Out R", NULL, "ROUT" },
  47         { "Stereo Out", NULL, "LOUT" },
  48         { "Stereo Out", NULL, "ROUT" },
  49 };
  50
  51 static int bfin_eval_adau1x61_hw_params(struct snd_pcm_substream *substream,
  52         struct snd_pcm_hw_params *params)
  53 {
  54         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  55         struct snd_soc_dai *codec_dai = rtd->codec_dai;
  56         int pll_rate;
  57         int ret;
  58
  59         switch (params_rate(params)) {
  60         case 48000:
  61         case 8000:
  62         case 12000:
  63         case 16000:
  64         case 24000:
  65         case 32000:
  66         case 96000:
  67                 pll_rate = 48000 * 1024;
  68                 break;
  69         case 44100:
  70         case 7350:
  71         case 11025:
  72         case 14700:
  73         case 22050:
  74         case 29400:
  75         case 88200:
  76                 pll_rate = 44100 * 1024;
  77                 break;
  78         default:
  79                 return -EINVAL;
  80         }
  81
  82         ret = snd_soc_dai_set_pll(codec_dai, ADAU17X1_PLL,
  83                         ADAU17X1_PLL_SRC_MCLK, 12288000, pll_rate);
  84         if (ret)
  85                 return ret;
  86
  87         ret = snd_soc_dai_set_sysclk(codec_dai, ADAU17X1_CLK_SRC_PLL, pll_rate,
  88                         SND_SOC_CLOCK_IN);
  89
  90         return ret;
  91 }
  92
  93 static const struct snd_soc_ops bfin_eval_adau1x61_ops = {
  94         .hw_params = bfin_eval_adau1x61_hw_params,
  95 };
  96
  97 static struct snd_soc_dai_link bfin_eval_adau1x61_dai = {
  98         .name = "adau1x61",
  99         .stream_name = "adau1x61",
 100         .cpu_dai_name = "bfin-i2s.0",
 101         .codec_dai_name = "adau-hifi",
 102         .platform_name = "bfin-i2s-pcm-audio",
 103         .codec_name = "adau1761.0-0038",
 104         .ops = &bfin_eval_adau1x61_ops,
 105         .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
 106                 SND_SOC_DAIFMT_CBM_CFM,
 107 };
 108
 109 static struct snd_soc_card bfin_eval_adau1x61 = {
 110         .name = "bfin-eval-adau1x61",
 111         .driver_name = "eval-adau1x61",
 112         .dai_link = &bfin_eval_adau1x61_dai,
 113         .num_links = 1,
 114
 115         .dapm_widgets = bfin_eval_adau1x61_dapm_widgets,
 116         .num_dapm_widgets = ARRAY_SIZE(bfin_eval_adau1x61_dapm_widgets),
 117         .dapm_routes = bfin_eval_adau1x61_dapm_routes,
 118         .num_dapm_routes = ARRAY_SIZE(bfin_eval_adau1x61_dapm_routes),
 119         .fully_routed = true,
 120 };
 121
 122 static int bfin_eval_adau1x61_probe(struct platform_device *pdev)
 123 {
 124         bfin_eval_adau1x61.dev = &pdev->dev;
 125
 126         return devm_snd_soc_register_card(&pdev->dev, &bfin_eval_adau1x61);
 127 }
 128
 129 static struct platform_driver bfin_eval_adau1x61_driver = {
 130         .driver = {
 131                 .name = "bfin-eval-adau1x61",
 132                 .pm = &snd_soc_pm_ops,
 133         },
 134         .probe = bfin_eval_adau1x61_probe,
 135 };
 136 module_platform_driver(bfin_eval_adau1x61_driver);
 137
 138 MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
 139 MODULE_DESCRIPTION("ALSA SoC bfin adau1x61 driver");
 140 MODULE_LICENSE("GPL");
 141 MODULE_ALIAS("platform:bfin-eval-adau1x61");