175 lines
4.2 KiB
C
175 lines
4.2 KiB
C
/*
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* e800-wm9712.c -- SoC audio for e800
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*
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* Copyright 2007 (c) Ian Molton <spyro@f2s.com>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; version 2 ONLY.
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*
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*/
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#include <linux/module.h>
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#include <linux/moduleparam.h>
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#include <linux/gpio.h>
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#include <sound/core.h>
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#include <sound/pcm.h>
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#include <sound/soc.h>
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#include <sound/soc-dapm.h>
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#include <asm/mach-types.h>
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#include <mach/audio.h>
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#include <mach/eseries-gpio.h>
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#include "../codecs/wm9712.h"
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#include "pxa2xx-pcm.h"
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#include "pxa2xx-ac97.h"
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static int e800_spk_amp_event(struct snd_soc_dapm_widget *w,
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struct snd_kcontrol *kcontrol, int event)
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{
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if (event & SND_SOC_DAPM_PRE_PMU)
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gpio_set_value(GPIO_E800_SPK_AMP_ON, 1);
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else if (event & SND_SOC_DAPM_POST_PMD)
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gpio_set_value(GPIO_E800_SPK_AMP_ON, 0);
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return 0;
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}
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static int e800_hp_amp_event(struct snd_soc_dapm_widget *w,
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struct snd_kcontrol *kcontrol, int event)
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{
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if (event & SND_SOC_DAPM_PRE_PMU)
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gpio_set_value(GPIO_E800_HP_AMP_OFF, 0);
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else if (event & SND_SOC_DAPM_POST_PMD)
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gpio_set_value(GPIO_E800_HP_AMP_OFF, 1);
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return 0;
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}
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static const struct snd_soc_dapm_widget e800_dapm_widgets[] = {
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SND_SOC_DAPM_HP("Headphone Jack", NULL),
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SND_SOC_DAPM_MIC("Mic (Internal1)", NULL),
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SND_SOC_DAPM_MIC("Mic (Internal2)", NULL),
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SND_SOC_DAPM_SPK("Speaker", NULL),
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SND_SOC_DAPM_PGA_E("Headphone Amp", SND_SOC_NOPM, 0, 0, NULL, 0,
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e800_hp_amp_event, SND_SOC_DAPM_PRE_PMU |
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SND_SOC_DAPM_POST_PMD),
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SND_SOC_DAPM_PGA_E("Speaker Amp", SND_SOC_NOPM, 0, 0, NULL, 0,
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e800_spk_amp_event, SND_SOC_DAPM_PRE_PMU |
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SND_SOC_DAPM_POST_PMD),
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};
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static const struct snd_soc_dapm_route audio_map[] = {
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{"Headphone Jack", NULL, "HPOUTL"},
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{"Headphone Jack", NULL, "HPOUTR"},
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{"Headphone Jack", NULL, "Headphone Amp"},
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{"Speaker Amp", NULL, "MONOOUT"},
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{"Speaker", NULL, "Speaker Amp"},
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{"MIC1", NULL, "Mic (Internal1)"},
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{"MIC2", NULL, "Mic (Internal2)"},
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};
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static int e800_ac97_init(struct snd_soc_codec *codec)
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{
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snd_soc_dapm_new_controls(codec, e800_dapm_widgets,
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ARRAY_SIZE(e800_dapm_widgets));
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snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
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snd_soc_dapm_sync(codec);
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return 0;
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}
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static struct snd_soc_dai_link e800_dai[] = {
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{
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.name = "AC97",
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.stream_name = "AC97 HiFi",
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.cpu_dai = &pxa_ac97_dai[PXA2XX_DAI_AC97_HIFI],
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.codec_dai = &wm9712_dai[WM9712_DAI_AC97_HIFI],
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.init = e800_ac97_init,
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},
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{
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.name = "AC97 Aux",
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.stream_name = "AC97 Aux",
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.cpu_dai = &pxa_ac97_dai[PXA2XX_DAI_AC97_AUX],
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.codec_dai = &wm9712_dai[WM9712_DAI_AC97_AUX],
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},
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};
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static struct snd_soc_card e800 = {
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.name = "Toshiba e800",
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.platform = &pxa2xx_soc_platform,
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.dai_link = e800_dai,
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.num_links = ARRAY_SIZE(e800_dai),
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};
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static struct snd_soc_device e800_snd_devdata = {
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.card = &e800,
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.codec_dev = &soc_codec_dev_wm9712,
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};
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static struct platform_device *e800_snd_device;
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static int __init e800_init(void)
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{
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int ret;
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if (!machine_is_e800())
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return -ENODEV;
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ret = gpio_request(GPIO_E800_HP_AMP_OFF, "Headphone amp");
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if (ret)
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return ret;
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ret = gpio_request(GPIO_E800_SPK_AMP_ON, "Speaker amp");
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if (ret)
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goto free_hp_amp_gpio;
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ret = gpio_direction_output(GPIO_E800_HP_AMP_OFF, 1);
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if (ret)
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goto free_spk_amp_gpio;
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ret = gpio_direction_output(GPIO_E800_SPK_AMP_ON, 1);
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if (ret)
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goto free_spk_amp_gpio;
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e800_snd_device = platform_device_alloc("soc-audio", -1);
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if (!e800_snd_device)
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return -ENOMEM;
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platform_set_drvdata(e800_snd_device, &e800_snd_devdata);
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e800_snd_devdata.dev = &e800_snd_device->dev;
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ret = platform_device_add(e800_snd_device);
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if (!ret)
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return 0;
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/* Fail gracefully */
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platform_device_put(e800_snd_device);
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free_spk_amp_gpio:
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gpio_free(GPIO_E800_SPK_AMP_ON);
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free_hp_amp_gpio:
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gpio_free(GPIO_E800_HP_AMP_OFF);
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return ret;
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}
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static void __exit e800_exit(void)
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{
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platform_device_unregister(e800_snd_device);
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gpio_free(GPIO_E800_SPK_AMP_ON);
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gpio_free(GPIO_E800_HP_AMP_OFF);
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}
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module_init(e800_init);
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module_exit(e800_exit);
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/* Module information */
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MODULE_AUTHOR("Ian Molton <spyro@f2s.com>");
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MODULE_DESCRIPTION("ALSA SoC driver for e800");
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MODULE_LICENSE("GPL v2");
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