tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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 int e750_ac97_init(struct snd_soc_pcm_runtime *rtd)
74{
75 struct snd_soc_codec *codec = rtd->codec;
76 struct snd_soc_dapm_context *dapm = &codec->dapm;
77
78 snd_soc_dapm_nc_pin(dapm, "LOUT");
79 snd_soc_dapm_nc_pin(dapm, "ROUT");
80 snd_soc_dapm_nc_pin(dapm, "PHONE");
81 snd_soc_dapm_nc_pin(dapm, "LINEINL");
82 snd_soc_dapm_nc_pin(dapm, "LINEINR");
83 snd_soc_dapm_nc_pin(dapm, "CDINL");
84 snd_soc_dapm_nc_pin(dapm, "CDINR");
85 snd_soc_dapm_nc_pin(dapm, "PCBEEP");
86 snd_soc_dapm_nc_pin(dapm, "MIC2");
87
88 snd_soc_dapm_new_controls(dapm, e750_dapm_widgets,
89 ARRAY_SIZE(e750_dapm_widgets));
90
91 snd_soc_dapm_add_routes(dapm, audio_map, ARRAY_SIZE(audio_map));
92
93 return 0;
94}
95
96static struct snd_soc_dai_link e750_dai[] = {
97 {
98 .name = "AC97",
99 .stream_name = "AC97 HiFi",
100 .cpu_dai_name = "pxa2xx-ac97",
101 .codec_dai_name = "wm9705-hifi",
102 .platform_name = "pxa-pcm-audio",
103 .codec_name = "wm9705-codec",
104 .init = e750_ac97_init,
105 /* use ops to check startup state */
106 },
107 {
108 .name = "AC97 Aux",
109 .stream_name = "AC97 Aux",
110 .cpu_dai_name = "pxa2xx-ac97-aux",
111 .codec_dai_name ="wm9705-aux",
112 .platform_name = "pxa-pcm-audio",
113 .codec_name = "wm9705-codec",
114 },
115};
116
117static struct snd_soc_card e750 = {
118 .name = "Toshiba e750",
119 .owner = THIS_MODULE,
120 .dai_link = e750_dai,
121 .num_links = ARRAY_SIZE(e750_dai),
122};
123
124static struct gpio e750_audio_gpios[] = {
125 { GPIO_E750_HP_AMP_OFF, GPIOF_OUT_INIT_HIGH, "Headphone amp" },
126 { GPIO_E750_SPK_AMP_OFF, GPIOF_OUT_INIT_HIGH, "Speaker amp" },
127};
128
129static int e750_probe(struct platform_device *pdev)
130{
131 struct snd_soc_card *card = &e750;
132 int ret;
133
134 ret = gpio_request_array(e750_audio_gpios,
135 ARRAY_SIZE(e750_audio_gpios));
136 if (ret)
137 return ret;
138
139 card->dev = &pdev->dev;
140
141 ret = snd_soc_register_card(card);
142 if (ret) {
143 dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
144 ret);
145 gpio_free_array(e750_audio_gpios, ARRAY_SIZE(e750_audio_gpios));
146 }
147 return ret;
148}
149
150static int e750_remove(struct platform_device *pdev)
151{
152 struct snd_soc_card *card = platform_get_drvdata(pdev);
153
154 gpio_free_array(e750_audio_gpios, ARRAY_SIZE(e750_audio_gpios));
155 snd_soc_unregister_card(card);
156 return 0;
157}
158
159static struct platform_driver e750_driver = {
160 .driver = {
161 .name = "e750-audio",
162 .owner = THIS_MODULE,
163 },
164 .probe = e750_probe,
165 .remove = e750_remove,
166};
167
168module_platform_driver(e750_driver);
169
170/* Module information */
171MODULE_AUTHOR("Ian Molton <spyro@f2s.com>");
172MODULE_DESCRIPTION("ALSA SoC driver for e750");
173MODULE_LICENSE("GPL v2");
174MODULE_ALIAS("platform:e750-audio");