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