linux/sound/soc/pxa/brownstone.c
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   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_init(struct snd_soc_pcm_runtime *rtd)
  49{
  50        struct snd_soc_codec *codec = rtd->codec;
  51        struct snd_soc_dapm_context *dapm = &codec->dapm;
  52
  53        /* set endpoints to not connected */
  54        snd_soc_dapm_nc_pin(dapm, "HPOUT2P");
  55        snd_soc_dapm_nc_pin(dapm, "HPOUT2N");
  56        snd_soc_dapm_nc_pin(dapm, "LINEOUT1N");
  57        snd_soc_dapm_nc_pin(dapm, "LINEOUT1P");
  58        snd_soc_dapm_nc_pin(dapm, "LINEOUT2N");
  59        snd_soc_dapm_nc_pin(dapm, "LINEOUT2P");
  60        snd_soc_dapm_nc_pin(dapm, "IN1LN");
  61        snd_soc_dapm_nc_pin(dapm, "IN1LP");
  62        snd_soc_dapm_nc_pin(dapm, "IN1RP");
  63        snd_soc_dapm_nc_pin(dapm, "IN2LP:VXRN");
  64        snd_soc_dapm_nc_pin(dapm, "IN2RN");
  65        snd_soc_dapm_nc_pin(dapm, "IN2RP:VXRP");
  66        snd_soc_dapm_nc_pin(dapm, "IN2LN");
  67
  68        return 0;
  69}
  70
  71static int brownstone_wm8994_hw_params(struct snd_pcm_substream *substream,
  72                                       struct snd_pcm_hw_params *params)
  73{
  74        struct snd_soc_pcm_runtime *rtd = substream->private_data;
  75        struct snd_soc_dai *codec_dai = rtd->codec_dai;
  76        struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
  77        int freq_out, sspa_mclk, sysclk;
  78        int sspa_div;
  79
  80        if (params_rate(params) > 11025) {
  81                freq_out  = params_rate(params) * 512;
  82                sysclk    = params_rate(params) * 256;
  83                sspa_mclk = params_rate(params) * 64;
  84        } else {
  85                freq_out  = params_rate(params) * 1024;
  86                sysclk    = params_rate(params) * 512;
  87                sspa_mclk = params_rate(params) * 64;
  88        }
  89        sspa_div = freq_out;
  90        do_div(sspa_div, sspa_mclk);
  91
  92        snd_soc_dai_set_sysclk(cpu_dai, MMP_SSPA_CLK_AUDIO, freq_out, 0);
  93        snd_soc_dai_set_pll(cpu_dai, MMP_SYSCLK, 0, freq_out, sysclk);
  94        snd_soc_dai_set_pll(cpu_dai, MMP_SSPA_CLK, 0, freq_out, sspa_mclk);
  95
  96        /* set wm8994 sysclk */
  97        snd_soc_dai_set_sysclk(codec_dai, WM8994_SYSCLK_MCLK1, sysclk, 0);
  98
  99        return 0;
 100}
 101
 102/* machine stream operations */
 103static struct snd_soc_ops brownstone_ops = {
 104        .hw_params = brownstone_wm8994_hw_params,
 105};
 106
 107static struct snd_soc_dai_link brownstone_wm8994_dai[] = {
 108{
 109        .name           = "WM8994",
 110        .stream_name    = "WM8994 HiFi",
 111        .cpu_dai_name   = "mmp-sspa-dai.0",
 112        .codec_dai_name = "wm8994-aif1",
 113        .platform_name  = "mmp-pcm-audio",
 114        .codec_name     = "wm8994-codec",
 115        .dai_fmt        = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
 116                                SND_SOC_DAIFMT_CBS_CFS,
 117        .ops            = &brownstone_ops,
 118        .init           = brownstone_wm8994_init,
 119},
 120};
 121
 122/* audio machine driver */
 123static struct snd_soc_card brownstone = {
 124        .name         = "brownstone",
 125        .owner        = THIS_MODULE,
 126        .dai_link     = brownstone_wm8994_dai,
 127        .num_links    = ARRAY_SIZE(brownstone_wm8994_dai),
 128
 129        .controls = brownstone_dapm_control,
 130        .num_controls = ARRAY_SIZE(brownstone_dapm_control),
 131        .dapm_widgets = brownstone_dapm_widgets,
 132        .num_dapm_widgets = ARRAY_SIZE(brownstone_dapm_widgets),
 133        .dapm_routes = brownstone_audio_map,
 134        .num_dapm_routes = ARRAY_SIZE(brownstone_audio_map),
 135};
 136
 137static int brownstone_probe(struct platform_device *pdev)
 138{
 139        int ret;
 140
 141        brownstone.dev = &pdev->dev;
 142        ret = snd_soc_register_card(&brownstone);
 143        if (ret)
 144                dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
 145                                ret);
 146        return ret;
 147}
 148
 149static int brownstone_remove(struct platform_device *pdev)
 150{
 151        snd_soc_unregister_card(&brownstone);
 152        return 0;
 153}
 154
 155static struct platform_driver mmp_driver = {
 156        .driver         = {
 157                .name   = "brownstone-audio",
 158                .owner  = THIS_MODULE,
 159                .pm     = &snd_soc_pm_ops,
 160        },
 161        .probe          = brownstone_probe,
 162        .remove         = brownstone_remove,
 163};
 164
 165module_platform_driver(mmp_driver);
 166
 167MODULE_AUTHOR("Leo Yan <leoy@marvell.com>");
 168MODULE_DESCRIPTION("ALSA SoC Brownstone");
 169MODULE_LICENSE("GPL");
 170