LXR linux/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
  21static 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
  32static 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
  51static 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
  93static const struct snd_soc_ops bfin_eval_adau1x61_ops = {
  94        .hw_params = bfin_eval_adau1x61_hw_params,
  95};
  96
  97static 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
 109static struct snd_soc_card bfin_eval_adau1x61 = {
 110        .name = "bfin-eval-adau1x61",
 111        .owner = THIS_MODULE,
 112        .driver_name = "eval-adau1x61",
 113        .dai_link = &bfin_eval_adau1x61_dai,
 114        .num_links = 1,
 115
 116        .dapm_widgets = bfin_eval_adau1x61_dapm_widgets,
 117        .num_dapm_widgets = ARRAY_SIZE(bfin_eval_adau1x61_dapm_widgets),
 118        .dapm_routes = bfin_eval_adau1x61_dapm_routes,
 119        .num_dapm_routes = ARRAY_SIZE(bfin_eval_adau1x61_dapm_routes),
 120        .fully_routed = true,
 121};
 122
 123static int bfin_eval_adau1x61_probe(struct platform_device *pdev)
 124{
 125        bfin_eval_adau1x61.dev = &pdev->dev;
 126
 127        return devm_snd_soc_register_card(&pdev->dev, &bfin_eval_adau1x61);
 128}
 129
 130static struct platform_driver bfin_eval_adau1x61_driver = {
 131        .driver = {
 132                .name = "bfin-eval-adau1x61",
 133                .pm = &snd_soc_pm_ops,
 134        },
 135        .probe = bfin_eval_adau1x61_probe,
 136};
 137module_platform_driver(bfin_eval_adau1x61_driver);
 138
 139MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
 140MODULE_DESCRIPTION("ALSA SoC bfin adau1x61 driver");
 141MODULE_LICENSE("GPL");
 142MODULE_ALIAS("platform:bfin-eval-adau1x61");
 143