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 int e800_ac97_init(struct snd_soc_pcm_runtime *rtd)
75{
76	struct snd_soc_codec *codec = rtd->codec;
77	struct snd_soc_dapm_context *dapm = &codec->dapm;
78
79	snd_soc_dapm_new_controls(dapm, e800_dapm_widgets,
80					ARRAY_SIZE(e800_dapm_widgets));
81
82	snd_soc_dapm_add_routes(dapm, audio_map, ARRAY_SIZE(audio_map));
83	snd_soc_dapm_sync(dapm);
84
85	return 0;
86}
87
88static struct snd_soc_dai_link e800_dai[] = {
89	{
90		.name = "AC97",
91		.stream_name = "AC97 HiFi",
92		.cpu_dai_name = "pxa2xx-ac97",
93		.codec_dai_name = "wm9712-hifi",
94		.platform_name = "pxa-pcm-audio",
95		.codec_name = "wm9712-codec",
96		.init = e800_ac97_init,
97	},
98	{
99		.name = "AC97 Aux",
100		.stream_name = "AC97 Aux",
101		.cpu_dai_name = "pxa2xx-ac97-aux",
102		.codec_dai_name ="wm9712-aux",
103		.platform_name = "pxa-pcm-audio",
104		.codec_name = "wm9712-codec",
105	},
106};
107
108static struct snd_soc_card e800 = {
109	.name = "Toshiba e800",
110	.dai_link = e800_dai,
111	.num_links = ARRAY_SIZE(e800_dai),
112};
113
114static struct platform_device *e800_snd_device;
115
116static int __init e800_init(void)
117{
118	int ret;
119
120	if (!machine_is_e800())
121		return -ENODEV;
122
123	ret = gpio_request(GPIO_E800_HP_AMP_OFF,  "Headphone amp");
124	if (ret)
125		return ret;
126
127	ret = gpio_request(GPIO_E800_SPK_AMP_ON, "Speaker amp");
128	if (ret)
129		goto free_hp_amp_gpio;
130
131	ret = gpio_direction_output(GPIO_E800_HP_AMP_OFF, 1);
132	if (ret)
133		goto free_spk_amp_gpio;
134
135	ret = gpio_direction_output(GPIO_E800_SPK_AMP_ON, 1);
136	if (ret)
137		goto free_spk_amp_gpio;
138
139	e800_snd_device = platform_device_alloc("soc-audio", -1);
140	if (!e800_snd_device)
141		return -ENOMEM;
142
143	platform_set_drvdata(e800_snd_device, &e800);
144	ret = platform_device_add(e800_snd_device);
145
146	if (!ret)
147		return 0;
148
149/* Fail gracefully */
150	platform_device_put(e800_snd_device);
151free_spk_amp_gpio:
152	gpio_free(GPIO_E800_SPK_AMP_ON);
153free_hp_amp_gpio:
154	gpio_free(GPIO_E800_HP_AMP_OFF);
155
156	return ret;
157}
158
159static void __exit e800_exit(void)
160{
161	platform_device_unregister(e800_snd_device);
162	gpio_free(GPIO_E800_SPK_AMP_ON);
163	gpio_free(GPIO_E800_HP_AMP_OFF);
164}
165
166module_init(e800_init);
167module_exit(e800_exit);
168
169/* Module information */
170MODULE_AUTHOR("Ian Molton <spyro@f2s.com>");
171MODULE_DESCRIPTION("ALSA SoC driver for e800");
172MODULE_LICENSE("GPL v2");
173