1/*
2 * e750-wm9705.c  --  SoC audio for e750
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 <mach/audio.h>
21#include <mach/eseries-gpio.h>
22
23#include <asm/mach-types.h>
24
25#include "../codecs/wm9705.h"
26#include "pxa2xx-ac97.h"
27
28static int e750_spk_amp_event(struct snd_soc_dapm_widget *w,
29				struct snd_kcontrol *kcontrol, int event)
30{
31	if (event & SND_SOC_DAPM_PRE_PMU)
32		gpio_set_value(GPIO_E750_SPK_AMP_OFF, 0);
33	else if (event & SND_SOC_DAPM_POST_PMD)
34		gpio_set_value(GPIO_E750_SPK_AMP_OFF, 1);
35
36	return 0;
37}
38
39static int e750_hp_amp_event(struct snd_soc_dapm_widget *w,
40				struct snd_kcontrol *kcontrol, int event)
41{
42	if (event & SND_SOC_DAPM_PRE_PMU)
43		gpio_set_value(GPIO_E750_HP_AMP_OFF, 0);
44	else if (event & SND_SOC_DAPM_POST_PMD)
45		gpio_set_value(GPIO_E750_HP_AMP_OFF, 1);
46
47	return 0;
48}
49
50static const struct snd_soc_dapm_widget e750_dapm_widgets[] = {
51	SND_SOC_DAPM_HP("Headphone Jack", NULL),
52	SND_SOC_DAPM_SPK("Speaker", NULL),
53	SND_SOC_DAPM_MIC("Mic (Internal)", NULL),
54	SND_SOC_DAPM_PGA_E("Headphone Amp", SND_SOC_NOPM, 0, 0, NULL, 0,
55			e750_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			e750_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 Amp", NULL, "HPOUTL"},
64	{"Headphone Amp", NULL, "HPOUTR"},
65	{"Headphone Jack", NULL, "Headphone Amp"},
66
67	{"Speaker Amp", NULL, "MONOOUT"},
68	{"Speaker", NULL, "Speaker Amp"},
69
70	{"MIC1", NULL, "Mic (Internal)"},
71};
72
73static struct snd_soc_dai_link e750_dai[] = {
74	{
75		.name = "AC97",
76		.stream_name = "AC97 HiFi",
77		.cpu_dai_name = "pxa2xx-ac97",
78		.codec_dai_name = "wm9705-hifi",
79		.platform_name = "pxa-pcm-audio",
80		.codec_name = "wm9705-codec",
81		/* use ops to check startup state */
82	},
83	{
84		.name = "AC97 Aux",
85		.stream_name = "AC97 Aux",
86		.cpu_dai_name = "pxa2xx-ac97-aux",
87		.codec_dai_name ="wm9705-aux",
88		.platform_name = "pxa-pcm-audio",
89		.codec_name = "wm9705-codec",
90	},
91};
92
93static struct snd_soc_card e750 = {
94	.name = "Toshiba e750",
95	.owner = THIS_MODULE,
96	.dai_link = e750_dai,
97	.num_links = ARRAY_SIZE(e750_dai),
98
99	.dapm_widgets = e750_dapm_widgets,
100	.num_dapm_widgets = ARRAY_SIZE(e750_dapm_widgets),
101	.dapm_routes = audio_map,
102	.num_dapm_routes = ARRAY_SIZE(audio_map),
103	.fully_routed = true,
104};
105
106static struct gpio e750_audio_gpios[] = {
107	{ GPIO_E750_HP_AMP_OFF, GPIOF_OUT_INIT_HIGH, "Headphone amp" },
108	{ GPIO_E750_SPK_AMP_OFF, GPIOF_OUT_INIT_HIGH, "Speaker amp" },
109};
110
111static int e750_probe(struct platform_device *pdev)
112{
113	struct snd_soc_card *card = &e750;
114	int ret;
115
116	ret = gpio_request_array(e750_audio_gpios,
117				 ARRAY_SIZE(e750_audio_gpios));
118	if (ret)
119		return ret;
120
121	card->dev = &pdev->dev;
122
123	ret = snd_soc_register_card(card);
124	if (ret) {
125		dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
126			ret);
127		gpio_free_array(e750_audio_gpios, ARRAY_SIZE(e750_audio_gpios));
128	}
129	return ret;
130}
131
132static int e750_remove(struct platform_device *pdev)
133{
134	struct snd_soc_card *card = platform_get_drvdata(pdev);
135
136	gpio_free_array(e750_audio_gpios, ARRAY_SIZE(e750_audio_gpios));
137	snd_soc_unregister_card(card);
138	return 0;
139}
140
141static struct platform_driver e750_driver = {
142	.driver		= {
143		.name	= "e750-audio",
144		.pm     = &snd_soc_pm_ops,
145	},
146	.probe		= e750_probe,
147	.remove		= e750_remove,
148};
149
150module_platform_driver(e750_driver);
151
152/* Module information */
153MODULE_AUTHOR("Ian Molton <spyro@f2s.com>");
154MODULE_DESCRIPTION("ALSA SoC driver for e750");
155MODULE_LICENSE("GPL v2");
156MODULE_ALIAS("platform:e750-audio");
157