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
  24#include "../codecs/wm9712.h"
  25#include "pxa2xx-ac97.h"
  26
  27static int e800_spk_amp_event(struct snd_soc_dapm_widget *w,
  28                                struct snd_kcontrol *kcontrol, int event)
  29{
  30        if (event & SND_SOC_DAPM_PRE_PMU)
  31                gpio_set_value(GPIO_E800_SPK_AMP_ON, 1);
  32        else if (event & SND_SOC_DAPM_POST_PMD)
  33                gpio_set_value(GPIO_E800_SPK_AMP_ON, 0);
  34
  35        return 0;
  36}
  37
  38static int e800_hp_amp_event(struct snd_soc_dapm_widget *w,
  39                                struct snd_kcontrol *kcontrol, int event)
  40{
  41        if (event & SND_SOC_DAPM_PRE_PMU)
  42                gpio_set_value(GPIO_E800_HP_AMP_OFF, 0);
  43        else if (event & SND_SOC_DAPM_POST_PMD)
  44                gpio_set_value(GPIO_E800_HP_AMP_OFF, 1);
  45
  46        return 0;
  47}
  48
  49static const struct snd_soc_dapm_widget e800_dapm_widgets[] = {
  50        SND_SOC_DAPM_HP("Headphone Jack", NULL),
  51        SND_SOC_DAPM_MIC("Mic (Internal1)", NULL),
  52        SND_SOC_DAPM_MIC("Mic (Internal2)", NULL),
  53        SND_SOC_DAPM_SPK("Speaker", NULL),
  54        SND_SOC_DAPM_PGA_E("Headphone Amp", SND_SOC_NOPM, 0, 0, NULL, 0,
  55                        e800_hp_amp_event, SND_SOC_DAPM_PRE_PMU |
  56                        SND_SOC_DAPM_POST_PMD),
  57        SND_SOC_DAPM_PGA_E("Speaker Amp", SND_SOC_NOPM, 0, 0, NULL, 0,
  58                        e800_spk_amp_event, SND_SOC_DAPM_PRE_PMU |
  59                        SND_SOC_DAPM_POST_PMD),
  60};
  61
  62static const struct snd_soc_dapm_route audio_map[] = {
  63        {"Headphone Jack", NULL, "HPOUTL"},
  64        {"Headphone Jack", NULL, "HPOUTR"},
  65        {"Headphone Jack", NULL, "Headphone Amp"},
  66
  67        {"Speaker Amp", NULL, "MONOOUT"},
  68        {"Speaker", NULL, "Speaker Amp"},
  69
  70        {"MIC1", NULL, "Mic (Internal1)"},
  71        {"MIC2", NULL, "Mic (Internal2)"},
  72};
  73
  74static int e800_ac97_init(struct snd_soc_pcm_runtime *rtd)
  75{
  76        struct snd_soc_codec *codec = rtd->codec;
  77        struct snd_soc_dapm_context *dapm = &codec->dapm;
  78
  79        snd_soc_dapm_new_controls(dapm, e800_dapm_widgets,
  80                                        ARRAY_SIZE(e800_dapm_widgets));
  81
  82        snd_soc_dapm_add_routes(dapm, audio_map, ARRAY_SIZE(audio_map));
  83
  84        return 0;
  85}
  86
  87static struct snd_soc_dai_link e800_dai[] = {
  88        {
  89                .name = "AC97",
  90                .stream_name = "AC97 HiFi",
  91                .cpu_dai_name = "pxa2xx-ac97",
  92                .codec_dai_name = "wm9712-hifi",
  93                .platform_name = "pxa-pcm-audio",
  94                .codec_name = "wm9712-codec",
  95                .init = e800_ac97_init,
  96        },
  97        {
  98                .name = "AC97 Aux",
  99                .stream_name = "AC97 Aux",
 100                .cpu_dai_name = "pxa2xx-ac97-aux",
 101                .codec_dai_name ="wm9712-aux",
 102                .platform_name = "pxa-pcm-audio",
 103                .codec_name = "wm9712-codec",
 104        },
 105};
 106
 107static struct snd_soc_card e800 = {
 108        .name = "Toshiba e800",
 109        .owner = THIS_MODULE,
 110        .dai_link = e800_dai,
 111        .num_links = ARRAY_SIZE(e800_dai),
 112};
 113
 114static struct gpio e800_audio_gpios[] = {
 115        { GPIO_E800_SPK_AMP_ON, GPIOF_OUT_INIT_HIGH, "Headphone amp" },
 116        { GPIO_E800_HP_AMP_OFF, GPIOF_OUT_INIT_HIGH, "Speaker amp" },
 117};
 118
 119static int e800_probe(struct platform_device *pdev)
 120{
 121        struct snd_soc_card *card = &e800;
 122        int ret;
 123
 124        ret = gpio_request_array(e800_audio_gpios,
 125                                 ARRAY_SIZE(e800_audio_gpios));
 126        if (ret)
 127                return ret;
 128
 129        card->dev = &pdev->dev;
 130
 131        ret = snd_soc_register_card(card);
 132        if (ret) {
 133                dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
 134                        ret);
 135                gpio_free_array(e800_audio_gpios, ARRAY_SIZE(e800_audio_gpios));
 136        }
 137        return ret;
 138}
 139
 140static int e800_remove(struct platform_device *pdev)
 141{
 142        struct snd_soc_card *card = platform_get_drvdata(pdev);
 143
 144        gpio_free_array(e800_audio_gpios, ARRAY_SIZE(e800_audio_gpios));
 145        snd_soc_unregister_card(card);
 146        return 0;
 147}
 148
 149static struct platform_driver e800_driver = {
 150        .driver         = {
 151                .name   = "e800-audio",
 152                .owner  = THIS_MODULE,
 153        },
 154        .probe          = e800_probe,
 155        .remove         = e800_remove,
 156};
 157
 158module_platform_driver(e800_driver);
 159
 160/* Module information */
 161MODULE_AUTHOR("Ian Molton <spyro@f2s.com>");
 162MODULE_DESCRIPTION("ALSA SoC driver for e800");
 163MODULE_LICENSE("GPL v2");
 164MODULE_ALIAS("platform:e800-audio");
 165