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
|
/*
* File: sound/soc/blackfin/bf5xx-ad1938.c
* Author: Barry Song <Barry.Song@analog.com>
*
* Created: Thur June 4 2009
* Description: Board driver for ad1938 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.
*
* 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, see the file COPYING, or write
* to the Free Software Foundation, Inc.,
* 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#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/ad1938.h"
#include "bf5xx-sport.h"
#include "bf5xx-tdm-pcm.h"
#include "bf5xx-tdm.h"
static struct snd_soc_card bf5xx_ad1938;
static int bf5xx_ad1938_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_ad1938_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, 1, 2, 3, 4, 5, 6, 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 codec DAI slots, 8 channels, all channels are enabled */
ret = snd_soc_dai_set_tdm_slot(codec_dai, 0xFF, 0xFF, 8, 32);
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_ad1938_ops = {
.startup = bf5xx_ad1938_startup,
.hw_params = bf5xx_ad1938_hw_params,
};
static struct snd_soc_dai_link bf5xx_ad1938_dai = {
.name = "ad1938",
.stream_name = "AD1938",
.cpu_dai = &bf5xx_tdm_dai,
.codec_dai = &ad1938_dai,
.ops = &bf5xx_ad1938_ops,
};
static struct snd_soc_card bf5xx_ad1938 = {
.name = "bf5xx_ad1938",
.platform = &bf5xx_tdm_soc_platform,
.dai_link = &bf5xx_ad1938_dai,
.num_links = 1,
};
static struct snd_soc_device bf5xx_ad1938_snd_devdata = {
.card = &bf5xx_ad1938,
.codec_dev = &soc_codec_dev_ad1938,
};
static struct platform_device *bfxx_ad1938_snd_device;
static int __init bf5xx_ad1938_init(void)
{
int ret;
bfxx_ad1938_snd_device = platform_device_alloc("soc-audio", -1);
if (!bfxx_ad1938_snd_device)
return -ENOMEM;
platform_set_drvdata(bfxx_ad1938_snd_device, &bf5xx_ad1938_snd_devdata);
bf5xx_ad1938_snd_devdata.dev = &bfxx_ad1938_snd_device->dev;
ret = platform_device_add(bfxx_ad1938_snd_device);
if (ret)
platform_device_put(bfxx_ad1938_snd_device);
return ret;
}
static void __exit bf5xx_ad1938_exit(void)
{
platform_device_unregister(bfxx_ad1938_snd_device);
}
module_init(bf5xx_ad1938_init);
module_exit(bf5xx_ad1938_exit);
/* Module information */
MODULE_AUTHOR("Barry Song");
MODULE_DESCRIPTION("ALSA SoC AD1938 board driver");
MODULE_LICENSE("GPL");
|
