1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
|
/*
* kirkwood-openrd.c
*
* (c) 2010 Arnaud Patard <apatard@mandriva.com>
* (c) 2010 Arnaud Patard <arnaud.patard@rtp-net.org>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*/
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/interrupt.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
#include <sound/soc.h>
#include <mach/kirkwood.h>
#include <linux/platform_data/asoc-kirkwood.h>
#include <asm/mach-types.h>
#include "../codecs/cs42l51.h"
static int openrd_client_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_dai *codec_dai = rtd->codec_dai;
unsigned int freq;
switch (params_rate(params)) {
default:
case 44100:
freq = 11289600;
break;
case 48000:
freq = 12288000;
break;
case 96000:
freq = 24576000;
break;
}
return snd_soc_dai_set_sysclk(codec_dai, 0, freq, SND_SOC_CLOCK_IN);
}
static struct snd_soc_ops openrd_client_ops = {
.hw_params = openrd_client_hw_params,
};
static struct snd_soc_dai_link openrd_client_dai[] = {
{
.name = "CS42L51",
.stream_name = "CS42L51 HiFi",
.cpu_dai_name = "kirkwood-i2s",
.platform_name = "kirkwood-pcm-audio",
.codec_dai_name = "cs42l51-hifi",
.codec_name = "cs42l51-codec.0-004a",
.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBS_CFS,
.ops = &openrd_client_ops,
},
};
static struct snd_soc_card openrd_client = {
.name = "OpenRD Client",
.owner = THIS_MODULE,
.dai_link = openrd_client_dai,
.num_links = ARRAY_SIZE(openrd_client_dai),
};
static int openrd_probe(struct platform_device *pdev)
{
struct snd_soc_card *card = &openrd_client;
int ret;
card->dev = &pdev->dev;
ret = snd_soc_register_card(card);
if (ret)
dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
ret);
return ret;
}
static int openrd_remove(struct platform_device *pdev)
{
struct snd_soc_card *card = platform_get_drvdata(pdev);
snd_soc_unregister_card(card);
return 0;
}
static struct platform_driver openrd_driver = {
.driver = {
.name = "openrd-client-audio",
.owner = THIS_MODULE,
},
.probe = openrd_probe,
.remove = openrd_remove,
};
module_platform_driver(openrd_driver);
/* Module information */
MODULE_AUTHOR("Arnaud Patard <arnaud.patard@rtp-net.org>");
MODULE_DESCRIPTION("ALSA SoC OpenRD Client");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:openrd-client-audio");
|
