LXR linux/sound/soc/blackfin/bfin-eval-adau1x81.c

   1/*
   2 * Machine driver for EVAL-ADAU1x81 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_adau1x81_dapm_widgets[] = {
  22        SND_SOC_DAPM_LINE("Stereo In", NULL),
  23        SND_SOC_DAPM_LINE("Beep", NULL),
  24
  25        SND_SOC_DAPM_SPK("Speaker", NULL),
  26        SND_SOC_DAPM_HP("Headphone", NULL),
  27};
  28
  29static const struct snd_soc_dapm_route bfin_eval_adau1x81_dapm_routes[] = {
  30        { "BEEP", NULL, "Beep" },
  31        { "LMIC", NULL, "Stereo In" },
  32        { "LMIC", NULL, "Stereo In" },
  33
  34        { "Headphone", NULL, "AOUTL" },
  35        { "Headphone", NULL, "AOUTR" },
  36        { "Speaker", NULL, "SP" },
  37};
  38
  39static int bfin_eval_adau1x81_hw_params(struct snd_pcm_substream *substream,
  40        struct snd_pcm_hw_params *params)
  41{
  42        struct snd_soc_pcm_runtime *rtd = substream->private_data;
  43        struct snd_soc_dai *codec_dai = rtd->codec_dai;
  44        int pll_rate;
  45        int ret;
  46
  47        switch (params_rate(params)) {
  48        case 48000:
  49        case 8000:
  50        case 12000:
  51        case 16000:
  52        case 24000:
  53        case 32000:
  54        case 96000:
  55                pll_rate = 48000 * 1024;
  56                break;
  57        case 44100:
  58        case 7350:
  59        case 11025:
  60        case 14700:
  61        case 22050:
  62        case 29400:
  63        case 88200:
  64                pll_rate = 44100 * 1024;
  65                break;
  66        default:
  67                return -EINVAL;
  68        }
  69
  70        ret = snd_soc_dai_set_pll(codec_dai, ADAU17X1_PLL,
  71                        ADAU17X1_PLL_SRC_MCLK, 12288000, pll_rate);
  72        if (ret)
  73                return ret;
  74
  75        ret = snd_soc_dai_set_sysclk(codec_dai, ADAU17X1_CLK_SRC_PLL, pll_rate,
  76                        SND_SOC_CLOCK_IN);
  77
  78        return ret;
  79}
  80
  81static const struct snd_soc_ops bfin_eval_adau1x81_ops = {
  82        .hw_params = bfin_eval_adau1x81_hw_params,
  83};
  84
  85static struct snd_soc_dai_link bfin_eval_adau1x81_dai = {
  86        .name = "adau1x81",
  87        .stream_name = "adau1x81",
  88        .cpu_dai_name = "bfin-i2s.0",
  89        .codec_dai_name = "adau-hifi",
  90        .platform_name = "bfin-i2s-pcm-audio",
  91        .codec_name = "adau1781.0-0038",
  92        .ops = &bfin_eval_adau1x81_ops,
  93        .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
  94                SND_SOC_DAIFMT_CBM_CFM,
  95};
  96
  97static struct snd_soc_card bfin_eval_adau1x81 = {
  98        .name = "bfin-eval-adau1x81",
  99        .driver_name = "eval-adau1x81",
 100        .dai_link = &bfin_eval_adau1x81_dai,
 101        .num_links = 1,
 102
 103        .dapm_widgets = bfin_eval_adau1x81_dapm_widgets,
 104        .num_dapm_widgets = ARRAY_SIZE(bfin_eval_adau1x81_dapm_widgets),
 105        .dapm_routes = bfin_eval_adau1x81_dapm_routes,
 106        .num_dapm_routes = ARRAY_SIZE(bfin_eval_adau1x81_dapm_routes),
 107        .fully_routed = true,
 108};
 109
 110static int bfin_eval_adau1x81_probe(struct platform_device *pdev)
 111{
 112        bfin_eval_adau1x81.dev = &pdev->dev;
 113
 114        return devm_snd_soc_register_card(&pdev->dev, &bfin_eval_adau1x81);
 115}
 116
 117static struct platform_driver bfin_eval_adau1x81_driver = {
 118        .driver = {
 119                .name = "bfin-eval-adau1x81",
 120                .owner = THIS_MODULE,
 121                .pm = &snd_soc_pm_ops,
 122        },
 123        .probe = bfin_eval_adau1x81_probe,
 124};
 125module_platform_driver(bfin_eval_adau1x81_driver);
 126
 127MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
 128MODULE_DESCRIPTION("ALSA SoC bfin adau1x81 driver");
 129MODULE_LICENSE("GPL");
 130MODULE_ALIAS("platform:bfin-eval-adau1x81");
 131