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ASoC: simple-card: Enable and disable DAI clocks as needed
[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 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         return 0;
89 }
90
91 static struct snd_soc_dai_link e750_dai[] = {
92         {
93                 .name = "AC97",
94                 .stream_name = "AC97 HiFi",
95                 .cpu_dai_name = "pxa2xx-ac97",
96                 .codec_dai_name = "wm9705-hifi",
97                 .platform_name = "pxa-pcm-audio",
98                 .codec_name = "wm9705-codec",
99                 .init = e750_ac97_init,
100                 /* use ops to check startup state */
101         },
102         {
103                 .name = "AC97 Aux",
104                 .stream_name = "AC97 Aux",
105                 .cpu_dai_name = "pxa2xx-ac97-aux",
106                 .codec_dai_name ="wm9705-aux",
107                 .platform_name = "pxa-pcm-audio",
108                 .codec_name = "wm9705-codec",
109         },
110 };
111
112 static struct snd_soc_card e750 = {
113         .name = "Toshiba e750",
114         .owner = THIS_MODULE,
115         .dai_link = e750_dai,
116         .num_links = ARRAY_SIZE(e750_dai),
117
118         .dapm_widgets = e750_dapm_widgets,
119         .num_dapm_widgets = ARRAY_SIZE(e750_dapm_widgets),
120         .dapm_routes = audio_map,
121         .num_dapm_routes = ARRAY_SIZE(audio_map),
122 };
123
124 static 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
129 static 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
150 static 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
159 static struct platform_driver e750_driver = {
160         .driver         = {
161                 .name   = "e750-audio",
162                 .pm     = &snd_soc_pm_ops,
163         },
164         .probe          = e750_probe,
165         .remove         = e750_remove,
166 };
167
168 module_platform_driver(e750_driver);
169
170 /* Module information */
171 MODULE_AUTHOR("Ian Molton <spyro@f2s.com>");
172 MODULE_DESCRIPTION("ALSA SoC driver for e750");
173 MODULE_LICENSE("GPL v2");
174 MODULE_ALIAS("platform:e750-audio");