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
 20#include <asm/mach-types.h>
 21#include <mach/audio.h>
 22#include <mach/eseries-gpio.h>
 23
 24#include "pxa2xx-ac97.h"
 25
 26static int e800_spk_amp_event(struct snd_soc_dapm_widget *w,
 27				struct snd_kcontrol *kcontrol, int event)
 28{
 29	if (event & SND_SOC_DAPM_PRE_PMU)
 30		gpio_set_value(GPIO_E800_SPK_AMP_ON, 1);
 31	else if (event & SND_SOC_DAPM_POST_PMD)
 32		gpio_set_value(GPIO_E800_SPK_AMP_ON, 0);
 33
 34	return 0;
 35}
 36
 37static int e800_hp_amp_event(struct snd_soc_dapm_widget *w,
 38				struct snd_kcontrol *kcontrol, int event)
 39{
 40	if (event & SND_SOC_DAPM_PRE_PMU)
 41		gpio_set_value(GPIO_E800_HP_AMP_OFF, 0);
 42	else if (event & SND_SOC_DAPM_POST_PMD)
 43		gpio_set_value(GPIO_E800_HP_AMP_OFF, 1);
 44
 45	return 0;
 46}
 47
 48static const struct snd_soc_dapm_widget e800_dapm_widgets[] = {
 49	SND_SOC_DAPM_HP("Headphone Jack", NULL),
 50	SND_SOC_DAPM_MIC("Mic (Internal1)", NULL),
 51	SND_SOC_DAPM_MIC("Mic (Internal2)", NULL),
 52	SND_SOC_DAPM_SPK("Speaker", NULL),
 53	SND_SOC_DAPM_PGA_E("Headphone Amp", SND_SOC_NOPM, 0, 0, NULL, 0,
 54			e800_hp_amp_event, SND_SOC_DAPM_PRE_PMU |
 55			SND_SOC_DAPM_POST_PMD),
 56	SND_SOC_DAPM_PGA_E("Speaker Amp", SND_SOC_NOPM, 0, 0, NULL, 0,
 57			e800_spk_amp_event, SND_SOC_DAPM_PRE_PMU |
 58			SND_SOC_DAPM_POST_PMD),
 59};
 60
 61static const struct snd_soc_dapm_route audio_map[] = {
 62	{"Headphone Jack", NULL, "HPOUTL"},
 63	{"Headphone Jack", NULL, "HPOUTR"},
 64	{"Headphone Jack", NULL, "Headphone Amp"},
 65
 66	{"Speaker Amp", NULL, "MONOOUT"},
 67	{"Speaker", NULL, "Speaker Amp"},
 68
 69	{"MIC1", NULL, "Mic (Internal1)"},
 70	{"MIC2", NULL, "Mic (Internal2)"},
 71};
 72
 73static struct snd_soc_dai_link e800_dai[] = {
 74	{
 75		.name = "AC97",
 76		.stream_name = "AC97 HiFi",
 77		.cpu_dai_name = "pxa2xx-ac97",
 78		.codec_dai_name = "wm9712-hifi",
 79		.platform_name = "pxa-pcm-audio",
 80		.codec_name = "wm9712-codec",
 81	},
 82	{
 83		.name = "AC97 Aux",
 84		.stream_name = "AC97 Aux",
 85		.cpu_dai_name = "pxa2xx-ac97-aux",
 86		.codec_dai_name ="wm9712-aux",
 87		.platform_name = "pxa-pcm-audio",
 88		.codec_name = "wm9712-codec",
 89	},
 90};
 91
 92static struct snd_soc_card e800 = {
 93	.name = "Toshiba e800",
 94	.owner = THIS_MODULE,
 95	.dai_link = e800_dai,
 96	.num_links = ARRAY_SIZE(e800_dai),
 97
 98	.dapm_widgets = e800_dapm_widgets,
 99	.num_dapm_widgets = ARRAY_SIZE(e800_dapm_widgets),
100	.dapm_routes = audio_map,
101	.num_dapm_routes = ARRAY_SIZE(audio_map),
102};
103
104static struct gpio e800_audio_gpios[] = {
105	{ GPIO_E800_SPK_AMP_ON, GPIOF_OUT_INIT_HIGH, "Headphone amp" },
106	{ GPIO_E800_HP_AMP_OFF, GPIOF_OUT_INIT_HIGH, "Speaker amp" },
107};
108
109static int e800_probe(struct platform_device *pdev)
110{
111	struct snd_soc_card *card = &e800;
112	int ret;
113
114	ret = gpio_request_array(e800_audio_gpios,
115				 ARRAY_SIZE(e800_audio_gpios));
116	if (ret)
117		return ret;
118
119	card->dev = &pdev->dev;
120
121	ret = devm_snd_soc_register_card(&pdev->dev, card);
122	if (ret) {
123		dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
124			ret);
125		gpio_free_array(e800_audio_gpios, ARRAY_SIZE(e800_audio_gpios));
126	}
127	return ret;
128}
129
130static int e800_remove(struct platform_device *pdev)
131{
132	gpio_free_array(e800_audio_gpios, ARRAY_SIZE(e800_audio_gpios));
133	return 0;
134}
135
136static struct platform_driver e800_driver = {
137	.driver		= {
138		.name	= "e800-audio",
139		.pm     = &snd_soc_pm_ops,
140	},
141	.probe		= e800_probe,
142	.remove		= e800_remove,
143};
144
145module_platform_driver(e800_driver);
146
147/* Module information */
148MODULE_AUTHOR("Ian Molton <spyro@f2s.com>");
149MODULE_DESCRIPTION("ALSA SoC driver for e800");
150MODULE_LICENSE("GPL v2");
151MODULE_ALIAS("platform:e800-audio");