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
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
|
/*
* eukrea-tlv320.c -- SoC audio for eukrea_cpuimxXX in I2S mode
*
* Copyright 2010 Eric Bénard, Eukréa Electromatique <eric@eukrea.com>
*
* based on sound/soc/s3c24xx/s3c24xx_simtec_tlv320aic23.c
* which is Copyright 2009 Simtec Electronics
* and on sound/soc/imx/phycore-ac97.c which is
* Copyright 2009 Sascha Hauer, Pengutronix <s.hauer@pengutronix.de>
*
* 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/device.h>
#include <linux/i2c.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/soc.h>
#include <sound/soc-dapm.h>
#include <asm/mach-types.h>
#include "../codecs/tlv320aic23.h"
#include "imx-ssi.h"
#define CODEC_CLOCK 12000000
static int eukrea_tlv320_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->dai->codec_dai;
struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
int ret;
ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S |
SND_SOC_DAIFMT_NB_NF |
SND_SOC_DAIFMT_CBM_CFM);
if (ret) {
pr_err("%s: failed set cpu dai format\n", __func__);
return ret;
}
ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S |
SND_SOC_DAIFMT_NB_NF |
SND_SOC_DAIFMT_CBM_CFM);
if (ret) {
pr_err("%s: failed set codec dai format\n", __func__);
return ret;
}
ret = snd_soc_dai_set_sysclk(codec_dai, 0,
CODEC_CLOCK, SND_SOC_CLOCK_OUT);
if (ret) {
pr_err("%s: failed setting codec sysclk\n", __func__);
return ret;
}
ret = snd_soc_dai_set_sysclk(cpu_dai, IMX_SSP_SYS_CLK, 0,
SND_SOC_CLOCK_IN);
if (ret) {
pr_err("can't set CPU system clock IMX_SSP_SYS_CLK\n");
return ret;
}
return 0;
}
static struct snd_soc_ops eukrea_tlv320_snd_ops = {
.hw_params = eukrea_tlv320_hw_params,
};
static struct snd_soc_dai_link eukrea_tlv320_dai = {
.name = "tlv320aic23",
.stream_name = "TLV320AIC23",
.codec_dai = &tlv320aic23_dai,
.ops = &eukrea_tlv320_snd_ops,
};
static struct snd_soc_card eukrea_tlv320 = {
.name = "cpuimx-audio",
.platform = &imx_soc_platform,
.dai_link = &eukrea_tlv320_dai,
.num_links = 1,
};
static struct snd_soc_device eukrea_tlv320_snd_devdata = {
.card = &eukrea_tlv320,
.codec_dev = &soc_codec_dev_tlv320aic23,
};
static struct platform_device *eukrea_tlv320_snd_device;
static int __init eukrea_tlv320_init(void)
{
int ret;
if (!machine_is_eukrea_cpuimx27())
/* return happy. We might run on a totally different machine */
return 0;
eukrea_tlv320_snd_device = platform_device_alloc("soc-audio", -1);
if (!eukrea_tlv320_snd_device)
return -ENOMEM;
eukrea_tlv320_dai.cpu_dai = &imx_ssi_pcm_dai[0];
platform_set_drvdata(eukrea_tlv320_snd_device, &eukrea_tlv320_snd_devdata);
eukrea_tlv320_snd_devdata.dev = &eukrea_tlv320_snd_device->dev;
ret = platform_device_add(eukrea_tlv320_snd_device);
if (ret) {
printk(KERN_ERR "ASoC: Platform device allocation failed\n");
platform_device_put(eukrea_tlv320_snd_device);
}
return ret;
}
static void __exit eukrea_tlv320_exit(void)
{
platform_device_unregister(eukrea_tlv320_snd_device);
}
module_init(eukrea_tlv320_init);
module_exit(eukrea_tlv320_exit);
MODULE_AUTHOR("Eric Bénard <eric@eukrea.com>");
MODULE_DESCRIPTION("CPUIMX ALSA SoC driver");
MODULE_LICENSE("GPL");
|
