LXR linux/sound/soc/pxa/e800

   1/*
   2 * e800-wm9712.c  --  SoC audio for e800
   3 *
   4 * Copyright 2007 (c) Ian Molton <spyro@f2s.com>
   5 *
   6 *  This program is free software; you can redistribute  it and/or modify it
   7 *  under  the terms of  the GNU General  Public License as published by the
   8 *  Free Software Foundation; version 2 ONLY.
   9 *
  10 */
  11
  12#include <linux/module.h>
  13#include <linux/moduleparam.h>
  14#include <linux/gpio.h>
  15
  16#include <sound/core.h>
  17#include <sound/pcm.h>
  18#include <sound/soc.h>
  19
  20#include <asm/mach-types.h>
  21#include <mach/audio.h>
  22#include <mach/eseries-gpio.h>
  23
  24static int e800_spk_amp_event(struct snd_soc_dapm_widget *w,
  25                                struct snd_kcontrol *kcontrol, int event)
  26{
  27        if (event & SND_SOC_DAPM_PRE_PMU)
  28                gpio_set_value(GPIO_E800_SPK_AMP_ON, 1);
  29        else if (event & SND_SOC_DAPM_POST_PMD)
  30                gpio_set_value(GPIO_E800_SPK_AMP_ON, 0);
  31
  32        return 0;
  33}
  34
  35static int e800_hp_amp_event(struct snd_soc_dapm_widget *w,
  36                                struct snd_kcontrol *kcontrol, int event)
  37{
  38        if (event & SND_SOC_DAPM_PRE_PMU)
  39                gpio_set_value(GPIO_E800_HP_AMP_OFF, 0);
  40        else if (event & SND_SOC_DAPM_POST_PMD)
  41                gpio_set_value(GPIO_E800_HP_AMP_OFF, 1);
  42
  43        return 0;
  44}
  45
  46static const struct snd_soc_dapm_widget e800_dapm_widgets[] = {
  47        SND_SOC_DAPM_HP("Headphone Jack", NULL),
  48        SND_SOC_DAPM_MIC("Mic (Internal1)", NULL),
  49        SND_SOC_DAPM_MIC("Mic (Internal2)", NULL),
  50        SND_SOC_DAPM_SPK("Speaker", NULL),
  51        SND_SOC_DAPM_PGA_E("Headphone Amp", SND_SOC_NOPM, 0, 0, NULL, 0,
  52                        e800_hp_amp_event, SND_SOC_DAPM_PRE_PMU |
  53                        SND_SOC_DAPM_POST_PMD),
  54        SND_SOC_DAPM_PGA_E("Speaker Amp", SND_SOC_NOPM, 0, 0, NULL, 0,
  55                        e800_spk_amp_event, SND_SOC_DAPM_PRE_PMU |
  56                        SND_SOC_DAPM_POST_PMD),
  57};
  58
  59static const struct snd_soc_dapm_route audio_map[] = {
  60        {"Headphone Jack", NULL, "HPOUTL"},
  61        {"Headphone Jack", NULL, "HPOUTR"},
  62        {"Headphone Jack", NULL, "Headphone Amp"},
  63
  64        {"Speaker Amp", NULL, "MONOOUT"},
  65        {"Speaker", NULL, "Speaker Amp"},
  66
  67        {"MIC1", NULL, "Mic (Internal1)"},
  68        {"MIC2", NULL, "Mic (Internal2)"},
  69};
  70
  71static struct snd_soc_dai_link e800_dai[] = {
  72        {
  73                .name = "AC97",
  74                .stream_name = "AC97 HiFi",
  75                .cpu_dai_name = "pxa2xx-ac97",
  76                .codec_dai_name = "wm9712-hifi",
  77                .platform_name = "pxa-pcm-audio",
  78                .codec_name = "wm9712-codec",
  79        },
  80        {
  81                .name = "AC97 Aux",
  82                .stream_name = "AC97 Aux",
  83                .cpu_dai_name = "pxa2xx-ac97-aux",
  84                .codec_dai_name = "wm9712-aux",
  85                .platform_name = "pxa-pcm-audio",
  86                .codec_name = "wm9712-codec",
  87        },
  88};
  89
  90static struct snd_soc_card e800 = {
  91        .name = "Toshiba e800",
  92        .owner = THIS_MODULE,
  93        .dai_link = e800_dai,
  94        .num_links = ARRAY_SIZE(e800_dai),
  95
  96        .dapm_widgets = e800_dapm_widgets,
  97        .num_dapm_widgets = ARRAY_SIZE(e800_dapm_widgets),
  98        .dapm_routes = audio_map,
  99        .num_dapm_routes = ARRAY_SIZE(audio_map),
 100};
 101
 102static struct gpio e800_audio_gpios[] = {
 103        { GPIO_E800_SPK_AMP_ON, GPIOF_OUT_INIT_HIGH, "Headphone amp" },
 104        { GPIO_E800_HP_AMP_OFF, GPIOF_OUT_INIT_HIGH, "Speaker amp" },
 105};
 106
 107static int e800_probe(struct platform_device *pdev)
 108{
 109        struct snd_soc_card *card = &e800;
 110        int ret;
 111
 112        ret = gpio_request_array(e800_audio_gpios,
 113                                 ARRAY_SIZE(e800_audio_gpios));
 114        if (ret)
 115                return ret;
 116
 117        card->dev = &pdev->dev;
 118
 119        ret = devm_snd_soc_register_card(&pdev->dev, card);
 120        if (ret) {
 121                dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
 122                        ret);
 123                gpio_free_array(e800_audio_gpios, ARRAY_SIZE(e800_audio_gpios));
 124        }
 125        return ret;
 126}
 127
 128static int e800_remove(struct platform_device *pdev)
 129{
 130        gpio_free_array(e800_audio_gpios, ARRAY_SIZE(e800_audio_gpios));
 131        return 0;
 132}
 133
 134static struct platform_driver e800_driver = {
 135        .driver         = {
 136                .name   = "e800-audio",
 137                .pm     = &snd_soc_pm_ops,
 138        },
 139        .probe          = e800_probe,
 140        .remove         = e800_remove,
 141};
 142
 143module_platform_driver(e800_driver);
 144
 145/* Module information */
 146MODULE_AUTHOR("Ian Molton <spyro@f2s.com>");
 147MODULE_DESCRIPTION("ALSA SoC driver for e800");
 148MODULE_LICENSE("GPL v2");
 149MODULE_ALIAS("platform:e800-audio");
 150