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
166
167
168
169
170
171
172
173
174
175
176
|
// SPDX-License-Identifier: GPL-2.0-only
/*
* osk5912.c -- SoC audio for OSK 5912
*
* Copyright (C) 2008 Mistral Solutions
*
* Contact: Arun KS <arunks@mistralsolutions.com>
*/
#include <linux/clk.h>
#include <linux/platform_device.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/soc.h>
#include <asm/mach-types.h>
#include <linux/gpio.h>
#include <linux/module.h>
#include <linux/platform_data/asoc-ti-mcbsp.h>
#include "omap-mcbsp.h"
#include "../codecs/tlv320aic23.h"
#define CODEC_CLOCK 12000000
static struct clk *tlv320aic23_mclk;
static int osk_startup(struct snd_pcm_substream *substream)
{
return clk_enable(tlv320aic23_mclk);
}
static void osk_shutdown(struct snd_pcm_substream *substream)
{
clk_disable(tlv320aic23_mclk);
}
static int osk_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 = asoc_rtd_to_codec(rtd, 0);
int err;
/* Set the codec system clock for DAC and ADC */
err =
snd_soc_dai_set_sysclk(codec_dai, 0, CODEC_CLOCK, SND_SOC_CLOCK_IN);
if (err < 0) {
printk(KERN_ERR "can't set codec system clock\n");
return err;
}
return err;
}
static const struct snd_soc_ops osk_ops = {
.startup = osk_startup,
.hw_params = osk_hw_params,
.shutdown = osk_shutdown,
};
static const struct snd_soc_dapm_widget tlv320aic23_dapm_widgets[] = {
SND_SOC_DAPM_HP("Headphone Jack", NULL),
SND_SOC_DAPM_LINE("Line In", NULL),
SND_SOC_DAPM_MIC("Mic Jack", NULL),
};
static const struct snd_soc_dapm_route audio_map[] = {
{"Headphone Jack", NULL, "LHPOUT"},
{"Headphone Jack", NULL, "RHPOUT"},
{"LLINEIN", NULL, "Line In"},
{"RLINEIN", NULL, "Line In"},
{"MICIN", NULL, "Mic Jack"},
};
/* Digital audio interface glue - connects codec <--> CPU */
SND_SOC_DAILINK_DEFS(aic23,
DAILINK_COMP_ARRAY(COMP_CPU("omap-mcbsp.1")),
DAILINK_COMP_ARRAY(COMP_CODEC("tlv320aic23-codec",
"tlv320aic23-hifi")),
DAILINK_COMP_ARRAY(COMP_PLATFORM("omap-mcbsp.1")));
static struct snd_soc_dai_link osk_dai = {
.name = "TLV320AIC23",
.stream_name = "AIC23",
.dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_NB_NF |
SND_SOC_DAIFMT_CBM_CFM,
.ops = &osk_ops,
SND_SOC_DAILINK_REG(aic23),
};
/* Audio machine driver */
static struct snd_soc_card snd_soc_card_osk = {
.name = "OSK5912",
.owner = THIS_MODULE,
.dai_link = &osk_dai,
.num_links = 1,
.dapm_widgets = tlv320aic23_dapm_widgets,
.num_dapm_widgets = ARRAY_SIZE(tlv320aic23_dapm_widgets),
.dapm_routes = audio_map,
.num_dapm_routes = ARRAY_SIZE(audio_map),
};
static struct platform_device *osk_snd_device;
static int __init osk_soc_init(void)
{
int err;
u32 curRate;
struct device *dev;
if (!(machine_is_omap_osk()))
return -ENODEV;
osk_snd_device = platform_device_alloc("soc-audio", -1);
if (!osk_snd_device)
return -ENOMEM;
platform_set_drvdata(osk_snd_device, &snd_soc_card_osk);
err = platform_device_add(osk_snd_device);
if (err)
goto err1;
dev = &osk_snd_device->dev;
tlv320aic23_mclk = clk_get(dev, "mclk");
if (IS_ERR(tlv320aic23_mclk)) {
printk(KERN_ERR "Could not get mclk clock\n");
err = PTR_ERR(tlv320aic23_mclk);
goto err2;
}
/*
* Configure 12 MHz output on MCLK.
*/
curRate = (uint) clk_get_rate(tlv320aic23_mclk);
if (curRate != CODEC_CLOCK) {
if (clk_set_rate(tlv320aic23_mclk, CODEC_CLOCK)) {
printk(KERN_ERR "Cannot set MCLK for AIC23 CODEC\n");
err = -ECANCELED;
goto err3;
}
}
printk(KERN_INFO "MCLK = %d [%d]\n",
(uint) clk_get_rate(tlv320aic23_mclk), CODEC_CLOCK);
return 0;
err3:
clk_put(tlv320aic23_mclk);
err2:
platform_device_del(osk_snd_device);
err1:
platform_device_put(osk_snd_device);
return err;
}
static void __exit osk_soc_exit(void)
{
clk_put(tlv320aic23_mclk);
platform_device_unregister(osk_snd_device);
}
module_init(osk_soc_init);
module_exit(osk_soc_exit);
MODULE_AUTHOR("Arun KS <arunks@mistralsolutions.com>");
MODULE_DESCRIPTION("ALSA SoC OSK 5912");
MODULE_LICENSE("GPL");
|
