1 /*
2 * SoC audio driver for EM-X270, eXeda and CM-X300
3 *
4 * Copyright 2007, 2009 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 <lrg@slimlogic.co.uk>
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/core.h>
27 #include <sound/pcm.h>
28 #include <sound/soc.h>
29
30 #include <asm/mach-types.h>
31 #include <mach/audio.h>
32
33 #include "../codecs/wm9712.h"
34 #include "pxa2xx-ac97.h"
35
36 static struct snd_soc_dai_link em_x270_dai[] = {
37 {
38 .name = "AC97",
39 .stream_name = "AC97 HiFi",
40 .cpu_dai_name = "pxa2xx-ac97",
41 .codec_dai_name = "wm9712-hifi",
42 .platform_name = "pxa-pcm-audio",
43 .codec_name = "wm9712-codec",
44 },
45 {
46 .name = "AC97 Aux",
47 .stream_name = "AC97 Aux",
48 .cpu_dai_name = "pxa2xx-ac97-aux",
49 .codec_dai_name ="wm9712-aux",
50 .platform_name = "pxa-pcm-audio",
51 .codec_name = "wm9712-codec",
52 },
53 };
54
55 static struct snd_soc_card em_x270 = {
56 .name = "EM-X270",
57 .owner = THIS_MODULE,
58 .dai_link = em_x270_dai,
59 .num_links = ARRAY_SIZE(em_x270_dai),
60 };
61
62 static struct platform_device *em_x270_snd_device;
63
em_x270_init(void)64 static int __init em_x270_init(void)
65 {
66 int ret;
67
68 if (!(machine_is_em_x270() || machine_is_exeda()
69 || machine_is_cm_x300()))
70 return -ENODEV;
71
72 em_x270_snd_device = platform_device_alloc("soc-audio", -1);
73 if (!em_x270_snd_device)
74 return -ENOMEM;
75
76 platform_set_drvdata(em_x270_snd_device, &em_x270);
77 ret = platform_device_add(em_x270_snd_device);
78
79 if (ret)
80 platform_device_put(em_x270_snd_device);
81
82 return ret;
83 }
84
em_x270_exit(void)85 static void __exit em_x270_exit(void)
86 {
87 platform_device_unregister(em_x270_snd_device);
88 }
89
90 module_init(em_x270_init);
91 module_exit(em_x270_exit);
92
93 /* Module information */
94 MODULE_AUTHOR("Mike Rapoport");
95 MODULE_DESCRIPTION("ALSA SoC EM-X270, eXeda and CM-X300");
96 MODULE_LICENSE("GPL");
97