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#include <sound/soc-dapm.h>
  20
  21#include <asm/mach-types.h>
  22#include <mach/audio.h>
  23#include <mach/eseries-gpio.h>
  24
  25#include "../codecs/wm9712.h"
  26#include "pxa2xx-pcm.h"
  27#include "pxa2xx-ac97.h"
  28
  29static int e800_spk_amp_event(struct snd_soc_dapm_widget *w,
  30                                struct snd_kcontrol *kcontrol, int event)
  31{
  32        if (event & SND_SOC_DAPM_PRE_PMU)
  33                gpio_set_value(GPIO_E800_SPK_AMP_ON, 1);
  34        else if (event & SND_SOC_DAPM_POST_PMD)
  35                gpio_set_value(GPIO_E800_SPK_AMP_ON, 0);
  36
  37        return 0;
  38}
  39
  40static int e800_hp_amp_event(struct snd_soc_dapm_widget *w,
  41                                struct snd_kcontrol *kcontrol, int event)
  42{
  43        if (event & SND_SOC_DAPM_PRE_PMU)
  44                gpio_set_value(GPIO_E800_HP_AMP_OFF, 0);
  45        else if (event & SND_SOC_DAPM_POST_PMD)
  46                gpio_set_value(GPIO_E800_HP_AMP_OFF, 1);
  47
  48        return 0;
  49}
  50
  51static const struct snd_soc_dapm_widget e800_dapm_widgets[] = {
  52        SND_SOC_DAPM_HP("Headphone Jack", NULL),
  53        SND_SOC_DAPM_MIC("Mic (Internal1)", NULL),
  54        SND_SOC_DAPM_MIC("Mic (Internal2)", NULL),
  55        SND_SOC_DAPM_SPK("Speaker", NULL),
  56        SND_SOC_DAPM_PGA_E("Headphone Amp", SND_SOC_NOPM, 0, 0, NULL, 0,
  57                        e800_hp_amp_event, SND_SOC_DAPM_PRE_PMU |
  58                        SND_SOC_DAPM_POST_PMD),
  59        SND_SOC_DAPM_PGA_E("Speaker Amp", SND_SOC_NOPM, 0, 0, NULL, 0,
  60                        e800_spk_amp_event, SND_SOC_DAPM_PRE_PMU |
  61                        SND_SOC_DAPM_POST_PMD),
  62};
  63
  64static const struct snd_soc_dapm_route audio_map[] = {
  65        {"Headphone Jack", NULL, "HPOUTL"},
  66        {"Headphone Jack", NULL, "HPOUTR"},
  67        {"Headphone Jack", NULL, "Headphone Amp"},
  68
  69        {"Speaker Amp", NULL, "MONOOUT"},
  70        {"Speaker", NULL, "Speaker Amp"},
  71
  72        {"MIC1", NULL, "Mic (Internal1)"},
  73        {"MIC2", NULL, "Mic (Internal2)"},
  74};
  75
  76static int e800_ac97_init(struct snd_soc_codec *codec)
  77{
  78        snd_soc_dapm_new_controls(codec, e800_dapm_widgets,
  79                                        ARRAY_SIZE(e800_dapm_widgets));
  80
  81        snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
  82        snd_soc_dapm_sync(codec);
  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 = &pxa_ac97_dai[PXA2XX_DAI_AC97_HIFI],
  92                .codec_dai = &wm9712_dai[WM9712_DAI_AC97_HIFI],
  93                .init = e800_ac97_init,
  94        },
  95        {
  96                .name = "AC97 Aux",
  97                .stream_name = "AC97 Aux",
  98                .cpu_dai = &pxa_ac97_dai[PXA2XX_DAI_AC97_AUX],
  99                .codec_dai = &wm9712_dai[WM9712_DAI_AC97_AUX],
 100        },
 101};
 102
 103static struct snd_soc_card e800 = {
 104        .name = "Toshiba e800",
 105        .platform = &pxa2xx_soc_platform,
 106        .dai_link = e800_dai,
 107        .num_links = ARRAY_SIZE(e800_dai),
 108};
 109
 110static struct snd_soc_device e800_snd_devdata = {
 111        .card = &e800,
 112        .codec_dev = &soc_codec_dev_wm9712,
 113};
 114
 115static struct platform_device *e800_snd_device;
 116
 117static int __init e800_init(void)
 118{
 119        int ret;
 120
 121        if (!machine_is_e800())
 122                return -ENODEV;
 123
 124        ret = gpio_request(GPIO_E800_HP_AMP_OFF,  "Headphone amp");
 125        if (ret)
 126                return ret;
 127
 128        ret = gpio_request(GPIO_E800_SPK_AMP_ON, "Speaker amp");
 129        if (ret)
 130                goto free_hp_amp_gpio;
 131
 132        ret = gpio_direction_output(GPIO_E800_HP_AMP_OFF, 1);
 133        if (ret)
 134                goto free_spk_amp_gpio;
 135
 136        ret = gpio_direction_output(GPIO_E800_SPK_AMP_ON, 1);
 137        if (ret)
 138                goto free_spk_amp_gpio;
 139
 140        e800_snd_device = platform_device_alloc("soc-audio", -1);
 141        if (!e800_snd_device)
 142                return -ENOMEM;
 143
 144        platform_set_drvdata(e800_snd_device, &e800_snd_devdata);
 145        e800_snd_devdata.dev = &e800_snd_device->dev;
 146        ret = platform_device_add(e800_snd_device);
 147
 148        if (!ret)
 149                return 0;
 150
 151/* Fail gracefully */
 152        platform_device_put(e800_snd_device);
 153free_spk_amp_gpio:
 154        gpio_free(GPIO_E800_SPK_AMP_ON);
 155free_hp_amp_gpio:
 156        gpio_free(GPIO_E800_HP_AMP_OFF);
 157
 158        return ret;
 159}
 160
 161static void __exit e800_exit(void)
 162{
 163        platform_device_unregister(e800_snd_device);
 164        gpio_free(GPIO_E800_SPK_AMP_ON);
 165        gpio_free(GPIO_E800_HP_AMP_OFF);
 166}
 167
 168module_init(e800_init);
 169module_exit(e800_exit);
 170
 171/* Module information */
 172MODULE_AUTHOR("Ian Molton <spyro@f2s.com>");
 173MODULE_DESCRIPTION("ALSA SoC driver for e800");
 174MODULE_LICENSE("GPL v2");
 175