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Merge branch 'mfd/wm8994' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie...
[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         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
96 static 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
117 static struct snd_soc_card e750 = {
118         .name = "Toshiba e750",
119         .dai_link = e750_dai,
120         .num_links = ARRAY_SIZE(e750_dai),
121 };
122
123 static struct platform_device *e750_snd_device;
124
125 static int __init e750_init(void)
126 {
127         int ret;
128
129         if (!machine_is_e750())
130                 return -ENODEV;
131
132         ret = gpio_request_one(GPIO_E750_HP_AMP_OFF, GPIOF_OUT_INIT_HIGH,
133                                "Headphone amp");
134         if (ret)
135                 return ret;
136
137         ret = gpio_request_one(GPIO_E750_SPK_AMP_OFF, GPIOF_OUT_INIT_HIGH,
138                                "Speaker amp");
139         if (ret)
140                 goto free_hp_amp_gpio;
141
142         e750_snd_device = platform_device_alloc("soc-audio", -1);
143         if (!e750_snd_device) {
144                 ret = -ENOMEM;
145                 goto free_spk_amp_gpio;
146         }
147
148         platform_set_drvdata(e750_snd_device, &e750);
149         ret = platform_device_add(e750_snd_device);
150
151         if (!ret)
152                 return 0;
153
154 /* Fail gracefully */
155         platform_device_put(e750_snd_device);
156 free_spk_amp_gpio:
157         gpio_free(GPIO_E750_SPK_AMP_OFF);
158 free_hp_amp_gpio:
159         gpio_free(GPIO_E750_HP_AMP_OFF);
160
161         return ret;
162 }
163
164 static void __exit e750_exit(void)
165 {
166         platform_device_unregister(e750_snd_device);
167         gpio_free(GPIO_E750_SPK_AMP_OFF);
168         gpio_free(GPIO_E750_HP_AMP_OFF);
169 }
170
171 module_init(e750_init);
172 module_exit(e750_exit);
173
174 /* Module information */
175 MODULE_AUTHOR("Ian Molton <spyro@f2s.com>");
176 MODULE_DESCRIPTION("ALSA SoC driver for e750");
177 MODULE_LICENSE("GPL v2");