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
|
/*
* File: sound/soc/blackfin/bf5xx-ad1836.c
* Author: Barry Song <Barry.Song@analog.com>
*
* Created: Aug 4 2009
* Description: Board driver for ad1836 sound chip
*
* Bugs: Enter bugs at http://blackfin.uclinux.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/device.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/soc.h>
#include <sound/soc-dapm.h>
#include <sound/pcm_params.h>
#include <asm/blackfin.h>
#include <asm/cacheflush.h>
#include <asm/irq.h>
#include <asm/dma.h>
#include <asm/portmux.h>
#include "../codecs/ad1836.h"
#include "bf5xx-sport.h"
#include "bf5xx-tdm-pcm.h"
#include "bf5xx-tdm.h"
static struct snd_soc_card bf5xx_ad1836;
static int bf5xx_ad1836_startup(struct snd_pcm_substream *substream)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
cpu_dai->private_data = sport_handle;
return 0;
}
static int bf5xx_ad1836_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 *cpu_dai = rtd->dai->cpu_dai;
struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
unsigned int channel_map[] = {0, 4, 1, 5, 2, 6, 3, 7};
int ret = 0;
/* set cpu DAI configuration */
ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_DSP_A |
SND_SOC_DAIFMT_IB_IF | SND_SOC_DAIFMT_CBM_CFM);
if (ret < 0)
return ret;
/* set codec DAI configuration */
ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_DSP_A |
SND_SOC_DAIFMT_IB_IF | SND_SOC_DAIFMT_CBM_CFM);
if (ret < 0)
return ret;
/* set cpu DAI channel mapping */
ret = snd_soc_dai_set_channel_map(cpu_dai, ARRAY_SIZE(channel_map),
channel_map, ARRAY_SIZE(channel_map), channel_map);
if (ret < 0)
return ret;
return 0;
}
static struct snd_soc_ops bf5xx_ad1836_ops = {
.startup = bf5xx_ad1836_startup,
.hw_params = bf5xx_ad1836_hw_params,
};
static struct snd_soc_dai_link bf5xx_ad1836_dai = {
.name = "ad1836",
.stream_name = "AD1836",
.cpu_dai = &bf5xx_tdm_dai,
.codec_dai = &ad1836_dai,
.ops = &bf5xx_ad1836_ops,
};
static struct snd_soc_card bf5xx_ad1836 = {
.name = "bf5xx_ad1836",
.platform = &bf5xx_tdm_soc_platform,
.dai_link = &bf5xx_ad1836_dai,
.num_links = 1,
};
static struct snd_soc_device bf5xx_ad1836_snd_devdata = {
.card = &bf5xx_ad1836,
.codec_dev = &soc_codec_dev_ad1836,
};
static struct platform_device *bfxx_ad1836_snd_device;
static int __init bf5xx_ad1836_init(void)
{
int ret;
bfxx_ad1836_snd_device = platform_device_alloc("soc-audio", -1);
if (!bfxx_ad1836_snd_device)
return -ENOMEM;
platform_set_drvdata(bfxx_ad1836_snd_device, &bf5xx_ad1836_snd_devdata);
bf5xx_ad1836_snd_devdata.dev = &bfxx_ad1836_snd_device->dev;
ret = platform_device_add(bfxx_ad1836_snd_device);
if (ret)
platform_device_put(bfxx_ad1836_snd_device);
return ret;
}
static void __exit bf5xx_ad1836_exit(void)
{
platform_device_unregister(bfxx_ad1836_snd_device);
}
module_init(bf5xx_ad1836_init);
module_exit(bf5xx_ad1836_exit);
/* Module information */
MODULE_AUTHOR("Barry Song");
MODULE_DESCRIPTION("ALSA SoC AD1836 board driver");
MODULE_LICENSE("GPL");
|
