168 lines
4.1 KiB
C
168 lines
4.1 KiB
C
/*
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* e740-wm9705.c -- SoC audio for e740
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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 <mach/audio.h>
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#include <mach/eseries-gpio.h>
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#include <asm/mach-types.h>
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#define E740_AUDIO_OUT 1
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#define E740_AUDIO_IN 2
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static int e740_audio_power;
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static void e740_sync_audio_power(int status)
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{
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gpio_set_value(GPIO_E740_WM9705_nAVDD2, !status);
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gpio_set_value(GPIO_E740_AMP_ON, (status & E740_AUDIO_OUT) ? 1 : 0);
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gpio_set_value(GPIO_E740_MIC_ON, (status & E740_AUDIO_IN) ? 1 : 0);
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}
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static int e740_mic_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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e740_audio_power |= E740_AUDIO_IN;
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else if (event & SND_SOC_DAPM_POST_PMD)
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e740_audio_power &= ~E740_AUDIO_IN;
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e740_sync_audio_power(e740_audio_power);
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return 0;
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}
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static int e740_output_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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e740_audio_power |= E740_AUDIO_OUT;
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else if (event & SND_SOC_DAPM_POST_PMD)
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e740_audio_power &= ~E740_AUDIO_OUT;
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e740_sync_audio_power(e740_audio_power);
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return 0;
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}
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static const struct snd_soc_dapm_widget e740_dapm_widgets[] = {
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SND_SOC_DAPM_HP("Headphone Jack", NULL),
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SND_SOC_DAPM_SPK("Speaker", NULL),
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SND_SOC_DAPM_MIC("Mic (Internal)", NULL),
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SND_SOC_DAPM_PGA_E("Output Amp", SND_SOC_NOPM, 0, 0, NULL, 0,
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e740_output_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("Mic Amp", SND_SOC_NOPM, 0, 0, NULL, 0,
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e740_mic_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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{"Output Amp", NULL, "LOUT"},
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{"Output Amp", NULL, "ROUT"},
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{"Output Amp", NULL, "MONOOUT"},
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{"Speaker", NULL, "Output Amp"},
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{"Headphone Jack", NULL, "Output Amp"},
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{"MIC1", NULL, "Mic Amp"},
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{"Mic Amp", NULL, "Mic (Internal)"},
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};
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static struct snd_soc_dai_link e740_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_name = "pxa2xx-ac97",
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.codec_dai_name = "wm9705-hifi",
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.platform_name = "pxa-pcm-audio",
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.codec_name = "wm9705-codec",
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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_name = "pxa2xx-ac97-aux",
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.codec_dai_name = "wm9705-aux",
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.platform_name = "pxa-pcm-audio",
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.codec_name = "wm9705-codec",
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},
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};
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static struct snd_soc_card e740 = {
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.name = "Toshiba e740",
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.owner = THIS_MODULE,
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.dai_link = e740_dai,
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.num_links = ARRAY_SIZE(e740_dai),
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.dapm_widgets = e740_dapm_widgets,
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.num_dapm_widgets = ARRAY_SIZE(e740_dapm_widgets),
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.dapm_routes = audio_map,
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.num_dapm_routes = ARRAY_SIZE(audio_map),
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.fully_routed = true,
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};
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static struct gpio e740_audio_gpios[] = {
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{ GPIO_E740_MIC_ON, GPIOF_OUT_INIT_LOW, "Mic amp" },
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{ GPIO_E740_AMP_ON, GPIOF_OUT_INIT_LOW, "Output amp" },
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{ GPIO_E740_WM9705_nAVDD2, GPIOF_OUT_INIT_HIGH, "Audio power" },
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};
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static int e740_probe(struct platform_device *pdev)
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{
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struct snd_soc_card *card = &e740;
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int ret;
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ret = gpio_request_array(e740_audio_gpios,
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ARRAY_SIZE(e740_audio_gpios));
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if (ret)
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return ret;
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card->dev = &pdev->dev;
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ret = devm_snd_soc_register_card(&pdev->dev, card);
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if (ret) {
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dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
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ret);
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gpio_free_array(e740_audio_gpios, ARRAY_SIZE(e740_audio_gpios));
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}
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return ret;
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}
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static int e740_remove(struct platform_device *pdev)
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{
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gpio_free_array(e740_audio_gpios, ARRAY_SIZE(e740_audio_gpios));
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return 0;
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}
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static struct platform_driver e740_driver = {
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.driver = {
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.name = "e740-audio",
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.pm = &snd_soc_pm_ops,
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},
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.probe = e740_probe,
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.remove = e740_remove,
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};
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module_platform_driver(e740_driver);
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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 e740");
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MODULE_LICENSE("GPL v2");
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MODULE_ALIAS("platform:e740-audio");
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