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[karo-tx-linux.git] / sound / soc / pxa / e750_wm9705.c
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
28 static 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
39 static 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
50 static 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
62 static 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
73 static 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
93 static 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
106 static 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
111 static 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 = devm_snd_soc_register_card(&pdev->dev, 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
132 static int e750_remove(struct platform_device *pdev)
133 {
134         gpio_free_array(e750_audio_gpios, ARRAY_SIZE(e750_audio_gpios));
135         return 0;
136 }
137
138 static struct platform_driver e750_driver = {
139         .driver         = {
140                 .name   = "e750-audio",
141                 .pm     = &snd_soc_pm_ops,
142         },
143         .probe          = e750_probe,
144         .remove         = e750_remove,
145 };
146
147 module_platform_driver(e750_driver);
148
149 /* Module information */
150 MODULE_AUTHOR("Ian Molton <spyro@f2s.com>");
151 MODULE_DESCRIPTION("ALSA SoC driver for e750");
152 MODULE_LICENSE("GPL v2");
153 MODULE_ALIAS("platform:e750-audio");