/* * e740-wm9705.c -- SoC audio for e740 * * Copyright 2007 (c) Ian Molton <spyro@f2s.com> * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the * Free Software Foundation; version 2 ONLY. * */ #include <linux/module.h> #include <linux/moduleparam.h> #include <linux/gpio.h> #include <sound/core.h> #include <sound/pcm.h> #include <sound/soc.h> #include <mach/audio.h> #include <mach/eseries-gpio.h> #include <asm/mach-types.h> #include "../codecs/wm9705.h" #include "pxa2xx-ac97.h" #define E740_AUDIO_OUT 1 #define E740_AUDIO_IN 2 static int e740_audio_power; static void e740_sync_audio_power(int status) { gpio_set_value(GPIO_E740_WM9705_nAVDD2, !status); gpio_set_value(GPIO_E740_AMP_ON, (status & E740_AUDIO_OUT) ? 1 : 0); gpio_set_value(GPIO_E740_MIC_ON, (status & E740_AUDIO_IN) ? 1 : 0); } static int e740_mic_amp_event(struct snd_soc_dapm_widget *w, struct snd_kcontrol *kcontrol, int event) { if (event & SND_SOC_DAPM_PRE_PMU) e740_audio_power |= E740_AUDIO_IN; else if (event & SND_SOC_DAPM_POST_PMD) e740_audio_power &= ~E740_AUDIO_IN; e740_sync_audio_power(e740_audio_power); return 0; } static int e740_output_amp_event(struct snd_soc_dapm_widget *w, struct snd_kcontrol *kcontrol, int event) { if (event & SND_SOC_DAPM_PRE_PMU) e740_audio_power |= E740_AUDIO_OUT; else if (event & SND_SOC_DAPM_POST_PMD) e740_audio_power &= ~E740_AUDIO_OUT; e740_sync_audio_power(e740_audio_power); return 0; } static const struct snd_soc_dapm_widget e740_dapm_widgets[] = { SND_SOC_DAPM_HP("Headphone Jack", NULL), SND_SOC_DAPM_SPK("Speaker", NULL), SND_SOC_DAPM_MIC("Mic (Internal)", NULL), SND_SOC_DAPM_PGA_E("Output Amp", SND_SOC_NOPM, 0, 0, NULL, 0, e740_output_amp_event, SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD), SND_SOC_DAPM_PGA_E("Mic Amp", SND_SOC_NOPM, 0, 0, NULL, 0, e740_mic_amp_event, SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD), }; static const struct snd_soc_dapm_route audio_map[] = { {"Output Amp", NULL, "LOUT"}, {"Output Amp", NULL, "ROUT"}, {"Output Amp", NULL, "MONOOUT"}, {"Speaker", NULL, "Output Amp"}, {"Headphone Jack", NULL, "Output Amp"}, {"MIC1", NULL, "Mic Amp"}, {"Mic Amp", NULL, "Mic (Internal)"}, }; static int e740_ac97_init(struct snd_soc_pcm_runtime *rtd) { struct snd_soc_codec *codec = rtd->codec; struct snd_soc_dapm_context *dapm = &codec->dapm; snd_soc_dapm_nc_pin(dapm, "HPOUTL"); snd_soc_dapm_nc_pin(dapm, "HPOUTR"); snd_soc_dapm_nc_pin(dapm, "PHONE"); snd_soc_dapm_nc_pin(dapm, "LINEINL"); snd_soc_dapm_nc_pin(dapm, "LINEINR"); snd_soc_dapm_nc_pin(dapm, "CDINL"); snd_soc_dapm_nc_pin(dapm, "CDINR"); snd_soc_dapm_nc_pin(dapm, "PCBEEP"); snd_soc_dapm_nc_pin(dapm, "MIC2"); snd_soc_dapm_new_controls(dapm, e740_dapm_widgets, ARRAY_SIZE(e740_dapm_widgets)); snd_soc_dapm_add_routes(dapm, audio_map, ARRAY_SIZE(audio_map)); snd_soc_dapm_sync(dapm); return 0; } static struct snd_soc_dai_link e740_dai[] = { { .name = "AC97", .stream_name = "AC97 HiFi", .cpu_dai_name = "pxa2xx-ac97", .codec_dai_name = "wm9705-hifi", .platform_name = "pxa-pcm-audio", .codec_name = "wm9705-codec", .init = e740_ac97_init, }, { .name = "AC97 Aux", .stream_name = "AC97 Aux", .cpu_dai_name = "pxa2xx-ac97-aux", .codec_dai_name = "wm9705-aux", .platform_name = "pxa-pcm-audio", .codec_name = "wm9705-codec", }, }; static struct snd_soc_card e740 = { .name = "Toshiba e740", .dai_link = e740_dai, .num_links = ARRAY_SIZE(e740_dai), }; static struct platform_device *e740_snd_device; static int __init e740_init(void) { int ret; if (!machine_is_e740()) return -ENODEV; ret = gpio_request(GPIO_E740_MIC_ON, "Mic amp"); if (ret) return ret; ret = gpio_request(GPIO_E740_AMP_ON, "Output amp"); if (ret) goto free_mic_amp_gpio; ret = gpio_request(GPIO_E740_WM9705_nAVDD2, "Audio power"); if (ret) goto free_op_amp_gpio; /* Disable audio */ ret = gpio_direction_output(GPIO_E740_MIC_ON, 0); if (ret) goto free_apwr_gpio; ret = gpio_direction_output(GPIO_E740_AMP_ON, 0); if (ret) goto free_apwr_gpio; ret = gpio_direction_output(GPIO_E740_WM9705_nAVDD2, 1); if (ret) goto free_apwr_gpio; e740_snd_device = platform_device_alloc("soc-audio", -1); if (!e740_snd_device) { ret = -ENOMEM; goto free_apwr_gpio; } platform_set_drvdata(e740_snd_device, &e740); ret = platform_device_add(e740_snd_device); if (!ret) return 0; /* Fail gracefully */ platform_device_put(e740_snd_device); free_apwr_gpio: gpio_free(GPIO_E740_WM9705_nAVDD2); free_op_amp_gpio: gpio_free(GPIO_E740_AMP_ON); free_mic_amp_gpio: gpio_free(GPIO_E740_MIC_ON); return ret; } static void __exit e740_exit(void) { platform_device_unregister(e740_snd_device); gpio_free(GPIO_E740_WM9705_nAVDD2); gpio_free(GPIO_E740_AMP_ON); gpio_free(GPIO_E740_MIC_ON); } module_init(e740_init); module_exit(e740_exit); /* Module information */ MODULE_AUTHOR("Ian Molton <spyro@f2s.com>"); MODULE_DESCRIPTION("ALSA SoC driver for e740"); MODULE_LICENSE("GPL v2");