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
|
/*
* igep0020.c -- SoC audio for IGEP v2
*
* Based on sound/soc/omap/overo.c by Steve Sakoman
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* version 2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA
*
*/
#include <linux/clk.h>
#include <linux/platform_device.h>
#include <linux/module.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/soc.h>
#include <asm/mach-types.h>
#include <mach/hardware.h>
#include <mach/gpio.h>
#include <plat/mcbsp.h>
#include "omap-mcbsp.h"
#include "omap-pcm.h"
static int igep2_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;
int ret;
/* Set the codec system clock for DAC and ADC */
ret = snd_soc_dai_set_sysclk(codec_dai, 0, 26000000,
SND_SOC_CLOCK_IN);
if (ret < 0) {
printk(KERN_ERR "can't set codec system clock\n");
return ret;
}
return 0;
}
static struct snd_soc_ops igep2_ops = {
.hw_params = igep2_hw_params,
};
/* Digital audio interface glue - connects codec <--> CPU */
static struct snd_soc_dai_link igep2_dai = {
.name = "TWL4030",
.stream_name = "TWL4030",
.cpu_dai_name = "omap-mcbsp-dai.1",
.codec_dai_name = "twl4030-hifi",
.platform_name = "omap-pcm-audio",
.codec_name = "twl4030-codec",
.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
SND_SOC_DAIFMT_CBM_CFM,
.ops = &igep2_ops,
};
/* Audio machine driver */
static struct snd_soc_card snd_soc_card_igep2 = {
.name = "igep2",
.owner = THIS_MODULE,
.dai_link = &igep2_dai,
.num_links = 1,
};
static struct platform_device *igep2_snd_device;
static int __init igep2_soc_init(void)
{
int ret;
if (!machine_is_igep0020())
return -ENODEV;
printk(KERN_INFO "IGEP v2 SoC init\n");
igep2_snd_device = platform_device_alloc("soc-audio", -1);
if (!igep2_snd_device) {
printk(KERN_ERR "Platform device allocation failed\n");
return -ENOMEM;
}
platform_set_drvdata(igep2_snd_device, &snd_soc_card_igep2);
ret = platform_device_add(igep2_snd_device);
if (ret)
goto err1;
return 0;
err1:
printk(KERN_ERR "Unable to add platform device\n");
platform_device_put(igep2_snd_device);
return ret;
}
module_init(igep2_soc_init);
static void __exit igep2_soc_exit(void)
{
platform_device_unregister(igep2_snd_device);
}
module_exit(igep2_soc_exit);
MODULE_AUTHOR("Enric Balletbo i Serra <eballetbo@iseebcn.com>");
MODULE_DESCRIPTION("ALSA SoC IGEP v2");
MODULE_LICENSE("GPL");
|
