212 lines
5.0 KiB
C
212 lines
5.0 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 <sound/soc-dapm.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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#include "../codecs/wm9705.h"
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#include "pxa2xx-pcm.h"
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#include "pxa2xx-ac97.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 int e740_ac97_init(struct snd_soc_codec *codec)
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{
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snd_soc_dapm_nc_pin(codec, "HPOUTL");
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snd_soc_dapm_nc_pin(codec, "HPOUTR");
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snd_soc_dapm_nc_pin(codec, "PHONE");
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snd_soc_dapm_nc_pin(codec, "LINEINL");
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snd_soc_dapm_nc_pin(codec, "LINEINR");
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snd_soc_dapm_nc_pin(codec, "CDINL");
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snd_soc_dapm_nc_pin(codec, "CDINR");
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snd_soc_dapm_nc_pin(codec, "PCBEEP");
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snd_soc_dapm_nc_pin(codec, "MIC2");
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snd_soc_dapm_new_controls(codec, e740_dapm_widgets,
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ARRAY_SIZE(e740_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 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 = &pxa_ac97_dai[PXA2XX_DAI_AC97_HIFI],
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.codec_dai = &wm9705_dai[WM9705_DAI_AC97_HIFI],
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.init = e740_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 = &wm9705_dai[WM9705_DAI_AC97_AUX],
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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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.platform = &pxa2xx_soc_platform,
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.dai_link = e740_dai,
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.num_links = ARRAY_SIZE(e740_dai),
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};
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static struct snd_soc_device e740_snd_devdata = {
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.card = &e740,
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.codec_dev = &soc_codec_dev_wm9705,
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};
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static struct platform_device *e740_snd_device;
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static int __init e740_init(void)
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{
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int ret;
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if (!machine_is_e740())
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return -ENODEV;
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ret = gpio_request(GPIO_E740_MIC_ON, "Mic amp");
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if (ret)
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return ret;
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ret = gpio_request(GPIO_E740_AMP_ON, "Output amp");
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if (ret)
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goto free_mic_amp_gpio;
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ret = gpio_request(GPIO_E740_WM9705_nAVDD2, "Audio power");
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if (ret)
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goto free_op_amp_gpio;
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/* Disable audio */
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ret = gpio_direction_output(GPIO_E740_MIC_ON, 0);
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if (ret)
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goto free_apwr_gpio;
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ret = gpio_direction_output(GPIO_E740_AMP_ON, 0);
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if (ret)
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goto free_apwr_gpio;
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ret = gpio_direction_output(GPIO_E740_WM9705_nAVDD2, 1);
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if (ret)
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goto free_apwr_gpio;
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e740_snd_device = platform_device_alloc("soc-audio", -1);
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if (!e740_snd_device) {
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ret = -ENOMEM;
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goto free_apwr_gpio;
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}
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platform_set_drvdata(e740_snd_device, &e740_snd_devdata);
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e740_snd_devdata.dev = &e740_snd_device->dev;
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ret = platform_device_add(e740_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(e740_snd_device);
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free_apwr_gpio:
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gpio_free(GPIO_E740_WM9705_nAVDD2);
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free_op_amp_gpio:
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gpio_free(GPIO_E740_AMP_ON);
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free_mic_amp_gpio:
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gpio_free(GPIO_E740_MIC_ON);
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return ret;
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}
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static void __exit e740_exit(void)
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{
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platform_device_unregister(e740_snd_device);
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}
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module_init(e740_init);
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module_exit(e740_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 e740");
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MODULE_LICENSE("GPL v2");
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