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
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
|
/*
* omap3evm.c -- ALSA SoC support for OMAP3 EVM
*
* Author: Anuj Aggarwal <anuj.aggarwal@ti.com>
*
* Based on sound/soc/omap/beagle.c by Steve Sakoman
*
* Copyright (C) 2008 Texas Instruments, Incorporated
*
* 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 version 2.
*
* This program is distributed "as is" WITHOUT ANY WARRANTY of any kind,
* whether express or implied; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*/
#include <linux/clk.h>
#include <linux/platform_device.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/soc.h>
#include <sound/soc-dapm.h>
#include <asm/mach-types.h>
#include <mach/hardware.h>
#include <mach/gpio.h>
#include <mach/mcbsp.h>
#include "omap-mcbsp.h"
#include "omap-pcm.h"
#include "../codecs/twl4030.h"
static int omap3evm_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;
/* Set codec DAI configuration */
ret = snd_soc_dai_set_fmt(codec_dai,
SND_SOC_DAIFMT_I2S |
SND_SOC_DAIFMT_NB_NF |
SND_SOC_DAIFMT_CBM_CFM);
if (ret < 0) {
printk(KERN_ERR "Can't set codec DAI configuration\n");
return ret;
}
/* Set cpu DAI configuration */
ret = snd_soc_dai_set_fmt(cpu_dai,
SND_SOC_DAIFMT_I2S |
SND_SOC_DAIFMT_NB_NF |
SND_SOC_DAIFMT_CBM_CFM);
if (ret < 0) {
printk(KERN_ERR "Can't set cpu DAI configuration\n");
return 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 omap3evm_ops = {
.hw_params = omap3evm_hw_params,
};
/* Digital audio interface glue - connects codec <--> CPU */
static struct snd_soc_dai_link omap3evm_dai = {
.name = "TWL4030",
.stream_name = "TWL4030",
.cpu_dai = &omap_mcbsp_dai[0],
.codec_dai = &twl4030_dai[TWL4030_DAI_HIFI],
.ops = &omap3evm_ops,
};
/* Audio machine driver */
static struct snd_soc_card snd_soc_omap3evm = {
.name = "omap3evm",
.platform = &omap_soc_platform,
.dai_link = &omap3evm_dai,
.num_links = 1,
};
/* twl4030 setup */
static struct twl4030_setup_data twl4030_setup = {
.ramp_delay_value = 4,
.sysclk = 26000,
};
/* Audio subsystem */
static struct snd_soc_device omap3evm_snd_devdata = {
.card = &snd_soc_omap3evm,
.codec_dev = &soc_codec_dev_twl4030,
.codec_data = &twl4030_setup,
};
static struct platform_device *omap3evm_snd_device;
static int __init omap3evm_soc_init(void)
{
int ret;
if (!machine_is_omap3evm()) {
pr_err("Not OMAP3 EVM!\n");
return -ENODEV;
}
pr_info("OMAP3 EVM SoC init\n");
omap3evm_snd_device = platform_device_alloc("soc-audio", -1);
if (!omap3evm_snd_device) {
printk(KERN_ERR "Platform device allocation failed\n");
return -ENOMEM;
}
platform_set_drvdata(omap3evm_snd_device, &omap3evm_snd_devdata);
omap3evm_snd_devdata.dev = &omap3evm_snd_device->dev;
*(unsigned int *)omap3evm_dai.cpu_dai->private_data = 1;
ret = platform_device_add(omap3evm_snd_device);
if (ret)
goto err1;
return 0;
err1:
printk(KERN_ERR "Unable to add platform device\n");
platform_device_put(omap3evm_snd_device);
return ret;
}
static void __exit omap3evm_soc_exit(void)
{
platform_device_unregister(omap3evm_snd_device);
}
module_init(omap3evm_soc_init);
module_exit(omap3evm_soc_exit);
MODULE_AUTHOR("Anuj Aggarwal <anuj.aggarwal@ti.com>");
MODULE_DESCRIPTION("ALSA SoC OMAP3 EVM");
MODULE_LICENSE("GPL v2");
|
