4 * (c) 2010 Arnaud Patard <apatard@mandriva.com>
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; either version 2 of the License, or (at your
9 * option) any later version.
12 #include <linux/module.h>
13 #include <linux/moduleparam.h>
14 #include <linux/interrupt.h>
15 #include <linux/platform_device.h>
16 #include <linux/slab.h>
17 #include <sound/soc.h>
18 #include <mach/kirkwood.h>
19 #include <plat/audio.h>
20 #include <asm/mach-types.h>
21 #include "../codecs/cs42l51.h"
23 static int openrd_client_hw_params(struct snd_pcm_substream
*substream
,
24 struct snd_pcm_hw_params
*params
)
26 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
27 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
;
28 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
30 unsigned int freq
, fmt
;
32 fmt
= SND_SOC_DAIFMT_I2S
| SND_SOC_DAIFMT_CBS_CFS
;
33 ret
= snd_soc_dai_set_fmt(cpu_dai
, fmt
);
37 ret
= snd_soc_dai_set_fmt(codec_dai
, fmt
);
41 switch (params_rate(params
)) {
54 return snd_soc_dai_set_sysclk(codec_dai
, 0, freq
, SND_SOC_CLOCK_IN
);
58 static struct snd_soc_ops openrd_client_ops
= {
59 .hw_params
= openrd_client_hw_params
,
63 static struct snd_soc_dai_link openrd_client_dai
[] = {
66 .stream_name
= "CS42L51 HiFi",
67 .cpu_dai_name
= "kirkwood-i2s",
68 .platform_name
= "kirkwood-pcm-audio",
69 .codec_dai_name
= "cs42l51_hifi",
70 .codec_name
= "cs42l51-codec.0-004a",
71 .ops
= &openrd_client_ops
,
76 static struct snd_soc_card openrd_client
= {
77 .name
= "OpenRD Client",
78 .dai_link
= openrd_client_dai
,
79 .num_links
= ARRAY_SIZE(openrd_client_dai
),
82 static struct platform_device
*openrd_client_snd_device
;
84 static int __init
openrd_client_init(void)
88 if (!machine_is_openrd_client())
91 openrd_client_snd_device
= platform_device_alloc("soc-audio", -1);
92 if (!openrd_client_snd_device
)
95 platform_set_drvdata(openrd_client_snd_device
,
98 ret
= platform_device_add(openrd_client_snd_device
);
100 printk(KERN_ERR
"%s: platform_device_add failed\n", __func__
);
101 platform_device_put(openrd_client_snd_device
);
107 static void __exit
openrd_client_exit(void)
109 platform_device_unregister(openrd_client_snd_device
);
112 module_init(openrd_client_init
);
113 module_exit(openrd_client_exit
);
115 /* Module information */
116 MODULE_AUTHOR("Arnaud Patard <apatard@mandriva.com>");
117 MODULE_DESCRIPTION("ALSA SoC OpenRD Client");
118 MODULE_LICENSE("GPL");
119 MODULE_ALIAS("platform:soc-audio");