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
155
156
157
158
159
160
161
162
163
164
165
|
/*
* File: sound/soc/blackfin/bf5xx-ssm2602.c
* Author: Cliff Cai <Cliff.Cai@analog.com>
*
* Created: Tue June 06 2008
* Description: board driver for SSM2602 sound chip
*
* Modified:
* Copyright 2008 Analog Devices Inc.
*
* 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/pcm_params.h>
#include <asm/dma.h>
#include <asm/portmux.h>
#include <linux/gpio.h>
#include "../codecs/ssm2602.h"
#include "bf5xx-sport.h"
#include "bf5xx-i2s-pcm.h"
static struct snd_soc_card bf5xx_ssm2602;
static int bf5xx_ssm2602_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;
struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
unsigned int clk = 0;
int ret = 0;
pr_debug("%s rate %d format %x\n", __func__, params_rate(params),
params_format(params));
/*
* If you are using a crystal source which frequency is not 12MHz
* then modify the below case statement with frequency of the crystal.
*
* If you are using the SPORT to generate clocking then this is
* where to do it.
*/
switch (params_rate(params)) {
case 8000:
case 16000:
case 48000:
case 96000:
case 11025:
case 22050:
case 44100:
clk = 12000000;
break;
}
/*
* CODEC is master for BCLK and LRC in this configuration.
*/
/* 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)
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)
return ret;
ret = snd_soc_dai_set_sysclk(codec_dai, SSM2602_SYSCLK, clk,
SND_SOC_CLOCK_IN);
if (ret < 0)
return ret;
return 0;
}
static struct snd_soc_ops bf5xx_ssm2602_ops = {
.hw_params = bf5xx_ssm2602_hw_params,
};
static struct snd_soc_dai_link bf5xx_ssm2602_dai[] = {
{
.name = "ssm2602",
.stream_name = "SSM2602",
.cpu_dai_name = "bfin-i2s.0",
.codec_dai_name = "ssm2602-hifi",
.platform_name = "bfin-i2s-pcm-audio",
.codec_name = "ssm2602.0-001b",
.ops = &bf5xx_ssm2602_ops,
},
{
.name = "ssm2602",
.stream_name = "SSM2602",
.cpu_dai_name = "bfin-i2s.1",
.codec_dai_name = "ssm2602-hifi",
.platform_name = "bfin-i2s-pcm-audio",
.codec_name = "ssm2602.0-001b",
.ops = &bf5xx_ssm2602_ops,
},
};
static struct snd_soc_card bf5xx_ssm2602 = {
.name = "bfin-ssm2602",
.dai_link = &bf5xx_ssm2602_dai[CONFIG_SND_BF5XX_SPORT_NUM],
.num_links = 1,
};
static struct platform_device *bf5xx_ssm2602_snd_device;
static int __init bf5xx_ssm2602_init(void)
{
int ret;
pr_debug("%s enter\n", __func__);
bf5xx_ssm2602_snd_device = platform_device_alloc("soc-audio", -1);
if (!bf5xx_ssm2602_snd_device)
return -ENOMEM;
platform_set_drvdata(bf5xx_ssm2602_snd_device, &bf5xx_ssm2602);
ret = platform_device_add(bf5xx_ssm2602_snd_device);
if (ret)
platform_device_put(bf5xx_ssm2602_snd_device);
return ret;
}
static void __exit bf5xx_ssm2602_exit(void)
{
pr_debug("%s enter\n", __func__);
platform_device_unregister(bf5xx_ssm2602_snd_device);
}
module_init(bf5xx_ssm2602_init);
module_exit(bf5xx_ssm2602_exit);
/* Module information */
MODULE_AUTHOR("Cliff Cai");
MODULE_DESCRIPTION("ALSA SoC SSM2602 BF527-EZKIT");
MODULE_LICENSE("GPL");
|
