d9c3f7b28be212ecdb7cc1bf62ce22d09f2808df
[linux-2.6.git] / sound / soc / pxa / em-x270.c
1 /*
2  * em-x270.c  --  SoC audio for EM-X270
3  *
4  * Copyright 2007 CompuLab, Ltd.
5  *
6  * Author: Mike Rapoport <mike@compulab.co.il>
7  *
8  * Copied from tosa.c:
9  * Copyright 2005 Wolfson Microelectronics PLC.
10  * Copyright 2005 Openedhand Ltd.
11  *
12  * Authors: Liam Girdwood <liam.girdwood@wolfsonmicro.com>
13  *          Richard Purdie <richard@openedhand.com>
14  *
15  *  This program is free software; you can redistribute  it and/or modify it
16  *  under  the terms of  the GNU General  Public License as published by the
17  *  Free Software Foundation;  either version 2 of the  License, or (at your
18  *  option) any later version.
19  *
20  */
21
22 #include <linux/module.h>
23 #include <linux/moduleparam.h>
24 #include <linux/device.h>
25
26 #include <sound/driver.h>
27 #include <sound/core.h>
28 #include <sound/pcm.h>
29 #include <sound/soc.h>
30 #include <sound/soc-dapm.h>
31
32 #include <asm/mach-types.h>
33 #include <mach/pxa-regs.h>
34 #include <mach/hardware.h>
35 #include <mach/audio.h>
36
37 #include "../codecs/wm9712.h"
38 #include "pxa2xx-pcm.h"
39 #include "pxa2xx-ac97.h"
40
41 static struct snd_soc_dai_link em_x270_dai[] = {
42         {
43                 .name = "AC97",
44                 .stream_name = "AC97 HiFi",
45                 .cpu_dai = &pxa_ac97_dai[PXA2XX_DAI_AC97_HIFI],
46                 .codec_dai = &wm9712_dai[WM9712_DAI_AC97_HIFI],
47         },
48         {
49                 .name = "AC97 Aux",
50                 .stream_name = "AC97 Aux",
51                 .cpu_dai = &pxa_ac97_dai[PXA2XX_DAI_AC97_AUX],
52                 .codec_dai = &wm9712_dai[WM9712_DAI_AC97_AUX],
53         },
54 };
55
56 static struct snd_soc_machine em_x270 = {
57         .name = "EM-X270",
58         .dai_link = em_x270_dai,
59         .num_links = ARRAY_SIZE(em_x270_dai),
60 };
61
62 static struct snd_soc_device em_x270_snd_devdata = {
63         .machine = &em_x270,
64         .platform = &pxa2xx_soc_platform,
65         .codec_dev = &soc_codec_dev_wm9712,
66 };
67
68 static struct platform_device *em_x270_snd_device;
69
70 static int __init em_x270_init(void)
71 {
72         int ret;
73
74         if (!machine_is_em_x270())
75                 return -ENODEV;
76
77         em_x270_snd_device = platform_device_alloc("soc-audio", -1);
78         if (!em_x270_snd_device)
79                 return -ENOMEM;
80
81         platform_set_drvdata(em_x270_snd_device, &em_x270_snd_devdata);
82         em_x270_snd_devdata.dev = &em_x270_snd_device->dev;
83         ret = platform_device_add(em_x270_snd_device);
84
85         if (ret)
86                 platform_device_put(em_x270_snd_device);
87
88         return ret;
89 }
90
91 static void __exit em_x270_exit(void)
92 {
93         platform_device_unregister(em_x270_snd_device);
94 }
95
96 module_init(em_x270_init);
97 module_exit(em_x270_exit);
98
99 /* Module information */
100 MODULE_AUTHOR("Mike Rapoport");
101 MODULE_DESCRIPTION("ALSA SoC EM-X270");
102 MODULE_LICENSE("GPL");