LXR linux/sound/soc/pxa/brownstone.c

   1/*
   2 * linux/sound/soc/pxa/brownstone.c
   3 *
   4 * Copyright (C) 2011 Marvell International Ltd.
   5 *
   6 * This program is free software; you can redistribute it and/or modify
   7 * it under the terms of the GNU General Public License as published by
   8 * the Free Software Foundation; either version 2 of the License, or
   9 * (at your option) any later version.
  10 *
  11 */
  12
  13#include <linux/module.h>
  14#include <sound/core.h>
  15#include <sound/pcm.h>
  16#include <sound/soc.h>
  17#include <sound/jack.h>
  18
  19#include "../codecs/wm8994.h"
  20#include "mmp-sspa.h"
  21
  22static const struct snd_kcontrol_new brownstone_dapm_control[] = {
  23        SOC_DAPM_PIN_SWITCH("Ext Spk"),
  24};
  25
  26static const struct snd_soc_dapm_widget brownstone_dapm_widgets[] = {
  27        SND_SOC_DAPM_SPK("Ext Spk", NULL),
  28        SND_SOC_DAPM_HP("Headset Stereophone", NULL),
  29        SND_SOC_DAPM_MIC("Headset Mic", NULL),
  30        SND_SOC_DAPM_MIC("Main Mic", NULL),
  31};
  32
  33static const struct snd_soc_dapm_route brownstone_audio_map[] = {
  34        {"Ext Spk", NULL, "SPKOUTLP"},
  35        {"Ext Spk", NULL, "SPKOUTLN"},
  36        {"Ext Spk", NULL, "SPKOUTRP"},
  37        {"Ext Spk", NULL, "SPKOUTRN"},
  38
  39        {"Headset Stereophone", NULL, "HPOUT1L"},
  40        {"Headset Stereophone", NULL, "HPOUT1R"},
  41
  42        {"IN1RN", NULL, "Headset Mic"},
  43
  44        {"DMIC1DAT", NULL, "MICBIAS1"},
  45        {"MICBIAS1", NULL, "Main Mic"},
  46};
  47
  48static int brownstone_wm8994_hw_params(struct snd_pcm_substream *substream,
  49                                       struct snd_pcm_hw_params *params)
  50{
  51        struct snd_soc_pcm_runtime *rtd = substream->private_data;
  52        struct snd_soc_dai *codec_dai = rtd->codec_dai;
  53        struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
  54        int freq_out, sspa_mclk, sysclk;
  55
  56        if (params_rate(params) > 11025) {
  57                freq_out  = params_rate(params) * 512;
  58                sysclk    = params_rate(params) * 256;
  59                sspa_mclk = params_rate(params) * 64;
  60        } else {
  61                freq_out  = params_rate(params) * 1024;
  62                sysclk    = params_rate(params) * 512;
  63                sspa_mclk = params_rate(params) * 64;
  64        }
  65
  66        snd_soc_dai_set_sysclk(cpu_dai, MMP_SSPA_CLK_AUDIO, freq_out, 0);
  67        snd_soc_dai_set_pll(cpu_dai, MMP_SYSCLK, 0, freq_out, sysclk);
  68        snd_soc_dai_set_pll(cpu_dai, MMP_SSPA_CLK, 0, freq_out, sspa_mclk);
  69
  70        /* set wm8994 sysclk */
  71        snd_soc_dai_set_sysclk(codec_dai, WM8994_SYSCLK_MCLK1, sysclk, 0);
  72
  73        return 0;
  74}
  75
  76/* machine stream operations */
  77static const struct snd_soc_ops brownstone_ops = {
  78        .hw_params = brownstone_wm8994_hw_params,
  79};
  80
  81static struct snd_soc_dai_link brownstone_wm8994_dai[] = {
  82{
  83        .name           = "WM8994",
  84        .stream_name    = "WM8994 HiFi",
  85        .cpu_dai_name   = "mmp-sspa-dai.0",
  86        .codec_dai_name = "wm8994-aif1",
  87        .platform_name  = "mmp-pcm-audio",
  88        .codec_name     = "wm8994-codec",
  89        .dai_fmt        = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
  90                                SND_SOC_DAIFMT_CBS_CFS,
  91        .ops            = &brownstone_ops,
  92},
  93};
  94
  95/* audio machine driver */
  96static struct snd_soc_card brownstone = {
  97        .name         = "brownstone",
  98        .owner        = THIS_MODULE,
  99        .dai_link     = brownstone_wm8994_dai,
 100        .num_links    = ARRAY_SIZE(brownstone_wm8994_dai),
 101
 102        .controls = brownstone_dapm_control,
 103        .num_controls = ARRAY_SIZE(brownstone_dapm_control),
 104        .dapm_widgets = brownstone_dapm_widgets,
 105        .num_dapm_widgets = ARRAY_SIZE(brownstone_dapm_widgets),
 106        .dapm_routes = brownstone_audio_map,
 107        .num_dapm_routes = ARRAY_SIZE(brownstone_audio_map),
 108        .fully_routed = true,
 109};
 110
 111static int brownstone_probe(struct platform_device *pdev)
 112{
 113        int ret;
 114
 115        brownstone.dev = &pdev->dev;
 116        ret = devm_snd_soc_register_card(&pdev->dev, &brownstone);
 117        if (ret)
 118                dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
 119                                ret);
 120        return ret;
 121}
 122
 123static struct platform_driver mmp_driver = {
 124        .driver         = {
 125                .name   = "brownstone-audio",
 126                .pm     = &snd_soc_pm_ops,
 127        },
 128        .probe          = brownstone_probe,
 129};
 130
 131module_platform_driver(mmp_driver);
 132
 133MODULE_AUTHOR("Leo Yan <leoy@marvell.com>");
 134MODULE_DESCRIPTION("ALSA SoC Brownstone");
 135MODULE_LICENSE("GPL");
 136MODULE_ALIAS("platform:brownstone-audio");
 137