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1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * SoC audio driver for EM-X270, eXeda and CM-X300
4 *
5 * Copyright 2007, 2009 CompuLab, Ltd.
6 *
7 * Author: Mike Rapoport <mike@compulab.co.il>
8 *
9 * Copied from tosa.c:
10 * Copyright 2005 Wolfson Microelectronics PLC.
11 * Copyright 2005 Openedhand Ltd.
12 *
13 * Authors: Liam Girdwood <lrg@slimlogic.co.uk>
14 * Richard Purdie <richard@openedhand.com>
15 */
16
17 #include <linux/module.h>
18 #include <linux/moduleparam.h>
19 #include <linux/device.h>
20
21 #include <sound/core.h>
22 #include <sound/pcm.h>
23 #include <sound/soc.h>
24
25 #include <asm/mach-types.h>
26 #include <mach/audio.h>
27
28 static struct snd_soc_dai_link em_x270_dai[] = {
29 {
30 .name = "AC97",
31 .stream_name = "AC97 HiFi",
32 .cpu_dai_name = "pxa2xx-ac97",
33 .codec_dai_name = "wm9712-hifi",
34 .platform_name = "pxa-pcm-audio",
35 .codec_name = "wm9712-codec",
36 },
37 {
38 .name = "AC97 Aux",
39 .stream_name = "AC97 Aux",
40 .cpu_dai_name = "pxa2xx-ac97-aux",
41 .codec_dai_name = "wm9712-aux",
42 .platform_name = "pxa-pcm-audio",
43 .codec_name = "wm9712-codec",
44 },
45 };
46
47 static struct snd_soc_card em_x270 = {
48 .name = "EM-X270",
49 .owner = THIS_MODULE,
50 .dai_link = em_x270_dai,
51 .num_links = ARRAY_SIZE(em_x270_dai),
52 };
53
54 static struct platform_device *em_x270_snd_device;
55
56 static int __init em_x270_init(void)
57 {
58 int ret;
59
60 if (!(machine_is_em_x270() || machine_is_exeda()
61 || machine_is_cm_x300()))
62 return -ENODEV;
63
64 em_x270_snd_device = platform_device_alloc("soc-audio", -1);
65 if (!em_x270_snd_device)
66 return -ENOMEM;
67
68 platform_set_drvdata(em_x270_snd_device, &em_x270);
69 ret = platform_device_add(em_x270_snd_device);
70
71 if (ret)
72 platform_device_put(em_x270_snd_device);
73
74 return ret;
75 }
76
77 static void __exit em_x270_exit(void)
78 {
79 platform_device_unregister(em_x270_snd_device);
80 }
81
82 module_init(em_x270_init);
83 module_exit(em_x270_exit);
84
85 /* Module information */
86 MODULE_AUTHOR("Mike Rapoport");
87 MODULE_DESCRIPTION("ALSA SoC EM-X270, eXeda and CM-X300");
88 MODULE_LICENSE("GPL");