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 "../codecs/wm9712.h"
25#include "pxa2xx-ac97.h"
26
27static int e800_spk_amp_event(struct snd_soc_dapm_widget *w,
28				struct snd_kcontrol *kcontrol, int event)
29{
30	if (event & SND_SOC_DAPM_PRE_PMU)
31		gpio_set_value(GPIO_E800_SPK_AMP_ON, 1);
32	else if (event & SND_SOC_DAPM_POST_PMD)
33		gpio_set_value(GPIO_E800_SPK_AMP_ON, 0);
34
35	return 0;
36}
37
38static int e800_hp_amp_event(struct snd_soc_dapm_widget *w,
39				struct snd_kcontrol *kcontrol, int event)
40{
41	if (event & SND_SOC_DAPM_PRE_PMU)
42		gpio_set_value(GPIO_E800_HP_AMP_OFF, 0);
43	else if (event & SND_SOC_DAPM_POST_PMD)
44		gpio_set_value(GPIO_E800_HP_AMP_OFF, 1);
45
46	return 0;
47}
48
49static const struct snd_soc_dapm_widget e800_dapm_widgets[] = {
50	SND_SOC_DAPM_HP("Headphone Jack", NULL),
51	SND_SOC_DAPM_MIC("Mic (Internal1)", NULL),
52	SND_SOC_DAPM_MIC("Mic (Internal2)", NULL),
53	SND_SOC_DAPM_SPK("Speaker", NULL),
54	SND_SOC_DAPM_PGA_E("Headphone Amp", SND_SOC_NOPM, 0, 0, NULL, 0,
55			e800_hp_amp_event, SND_SOC_DAPM_PRE_PMU |
56			SND_SOC_DAPM_POST_PMD),
57	SND_SOC_DAPM_PGA_E("Speaker Amp", SND_SOC_NOPM, 0, 0, NULL, 0,
58			e800_spk_amp_event, SND_SOC_DAPM_PRE_PMU |
59			SND_SOC_DAPM_POST_PMD),
60};
61
62static const struct snd_soc_dapm_route audio_map[] = {
63	{"Headphone Jack", NULL, "HPOUTL"},
64	{"Headphone Jack", NULL, "HPOUTR"},
65	{"Headphone Jack", NULL, "Headphone Amp"},
66
67	{"Speaker Amp", NULL, "MONOOUT"},
68	{"Speaker", NULL, "Speaker Amp"},
69
70	{"MIC1", NULL, "Mic (Internal1)"},
71	{"MIC2", NULL, "Mic (Internal2)"},
72};
73
74static struct snd_soc_dai_link e800_dai[] = {
75	{
76		.name = "AC97",
77		.stream_name = "AC97 HiFi",
78		.cpu_dai_name = "pxa2xx-ac97",
79		.codec_dai_name = "wm9712-hifi",
80		.platform_name = "pxa-pcm-audio",
81		.codec_name = "wm9712-codec",
82	},
83	{
84		.name = "AC97 Aux",
85		.stream_name = "AC97 Aux",
86		.cpu_dai_name = "pxa2xx-ac97-aux",
87		.codec_dai_name ="wm9712-aux",
88		.platform_name = "pxa-pcm-audio",
89		.codec_name = "wm9712-codec",
90	},
91};
92
93static struct snd_soc_card e800 = {
94	.name = "Toshiba e800",
95	.owner = THIS_MODULE,
96	.dai_link = e800_dai,
97	.num_links = ARRAY_SIZE(e800_dai),
98
99	.dapm_widgets = e800_dapm_widgets,
100	.num_dapm_widgets = ARRAY_SIZE(e800_dapm_widgets),
101	.dapm_routes = audio_map,
102	.num_dapm_routes = ARRAY_SIZE(audio_map),
103};
104
105static struct gpio e800_audio_gpios[] = {
106	{ GPIO_E800_SPK_AMP_ON, GPIOF_OUT_INIT_HIGH, "Headphone amp" },
107	{ GPIO_E800_HP_AMP_OFF, GPIOF_OUT_INIT_HIGH, "Speaker amp" },
108};
109
110static int e800_probe(struct platform_device *pdev)
111{
112	struct snd_soc_card *card = &e800;
113	int ret;
114
115	ret = gpio_request_array(e800_audio_gpios,
116				 ARRAY_SIZE(e800_audio_gpios));
117	if (ret)
118		return ret;
119
120	card->dev = &pdev->dev;
121
122	ret = devm_snd_soc_register_card(&pdev->dev, card);
123	if (ret) {
124		dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
125			ret);
126		gpio_free_array(e800_audio_gpios, ARRAY_SIZE(e800_audio_gpios));
127	}
128	return ret;
129}
130
131static int e800_remove(struct platform_device *pdev)
132{
133	gpio_free_array(e800_audio_gpios, ARRAY_SIZE(e800_audio_gpios));
134	return 0;
135}
136
137static struct platform_driver e800_driver = {
138	.driver		= {
139		.name	= "e800-audio",
140		.pm     = &snd_soc_pm_ops,
141	},
142	.probe		= e800_probe,
143	.remove		= e800_remove,
144};
145
146module_platform_driver(e800_driver);
147
148/* Module information */
149MODULE_AUTHOR("Ian Molton <spyro@f2s.com>");
150MODULE_DESCRIPTION("ALSA SoC driver for e800");
151MODULE_LICENSE("GPL v2");
152MODULE_ALIAS("platform:e800-audio");
153