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
177
178
179
180
181
182
183
184
185
186
187
188
|
/*
* omap-twl4030.c -- SoC audio for TI SoC based boards with twl4030 codec
*
* Copyright (C) 2012 Texas Instruments Incorporated - http://www.ti.com
* All rights reserved.
*
* Author: Peter Ujfalusi <peter.ujfalusi@ti.com>
*
* This driver replaces the following machine drivers:
* omap3beagle (Author: Steve Sakoman <steve@sakoman.com>)
* omap3evm (Author: Anuj Aggarwal <anuj.aggarwal@ti.com>)
* overo (Author: Steve Sakoman <steve@sakoman.com>)
* igep0020 (Author: Enric Balletbo i Serra <eballetbo@iseebcn.com>)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* version 2 as published by the Free Software Foundation.
*
* 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, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA
*
*/
#include <linux/platform_device.h>
#include <linux/platform_data/omap-twl4030.h>
#include <linux/module.h>
#include <linux/of.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/soc.h>
#include "omap-mcbsp.h"
#include "omap-pcm.h"
static int omap_twl4030_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;
struct snd_soc_codec *codec = rtd->codec;
struct snd_soc_card *card = codec->card;
unsigned int fmt;
int ret;
switch (params_channels(params)) {
case 2: /* Stereo I2S mode */
fmt = SND_SOC_DAIFMT_I2S |
SND_SOC_DAIFMT_NB_NF |
SND_SOC_DAIFMT_CBM_CFM;
break;
case 4: /* Four channel TDM mode */
fmt = SND_SOC_DAIFMT_DSP_A |
SND_SOC_DAIFMT_IB_NF |
SND_SOC_DAIFMT_CBM_CFM;
break;
default:
return -EINVAL;
}
/* Set codec DAI configuration */
ret = snd_soc_dai_set_fmt(codec_dai, fmt);
if (ret < 0) {
dev_err(card->dev, "can't set codec DAI configuration\n");
return ret;
}
/* Set cpu DAI configuration */
ret = snd_soc_dai_set_fmt(cpu_dai, fmt);
if (ret < 0) {
dev_err(card->dev, "can't set cpu DAI configuration\n");
return ret;
}
return 0;
}
static struct snd_soc_ops omap_twl4030_ops = {
.hw_params = omap_twl4030_hw_params,
};
/* Digital audio interface glue - connects codec <--> CPU */
static struct snd_soc_dai_link omap_twl4030_dai_links[] = {
{
.name = "TWL4030",
.stream_name = "TWL4030",
.cpu_dai_name = "omap-mcbsp.2",
.codec_dai_name = "twl4030-hifi",
.platform_name = "omap-pcm-audio",
.codec_name = "twl4030-codec",
.ops = &omap_twl4030_ops,
},
};
/* Audio machine driver */
static struct snd_soc_card omap_twl4030_card = {
.owner = THIS_MODULE,
.dai_link = omap_twl4030_dai_links,
.num_links = ARRAY_SIZE(omap_twl4030_dai_links),
};
static int omap_twl4030_probe(struct platform_device *pdev)
{
struct omap_tw4030_pdata *pdata = dev_get_platdata(&pdev->dev);
struct device_node *node = pdev->dev.of_node;
struct snd_soc_card *card = &omap_twl4030_card;
int ret = 0;
card->dev = &pdev->dev;
if (node) {
struct device_node *dai_node;
if (snd_soc_of_parse_card_name(card, "ti,model")) {
dev_err(&pdev->dev, "Card name is not provided\n");
return -ENODEV;
}
dai_node = of_parse_phandle(node, "ti,mcbsp", 0);
if (!dai_node) {
dev_err(&pdev->dev, "McBSP node is not provided\n");
return -EINVAL;
}
omap_twl4030_dai_links[0].cpu_dai_name = NULL;
omap_twl4030_dai_links[0].cpu_of_node = dai_node;
} else if (pdata) {
if (pdata->card_name) {
card->name = pdata->card_name;
} else {
dev_err(&pdev->dev, "Card name is not provided\n");
return -ENODEV;
}
} else {
dev_err(&pdev->dev, "Missing pdata\n");
return -ENODEV;
}
ret = snd_soc_register_card(card);
if (ret) {
dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
ret);
return ret;
}
return 0;
}
static int omap_twl4030_remove(struct platform_device *pdev)
{
struct snd_soc_card *card = platform_get_drvdata(pdev);
snd_soc_unregister_card(card);
return 0;
}
static const struct of_device_id omap_twl4030_of_match[] = {
{.compatible = "ti,omap-twl4030", },
{ },
};
MODULE_DEVICE_TABLE(of, omap_twl4030_of_match);
static struct platform_driver omap_twl4030_driver = {
.driver = {
.name = "omap-twl4030",
.owner = THIS_MODULE,
.pm = &snd_soc_pm_ops,
.of_match_table = omap_twl4030_of_match,
},
.probe = omap_twl4030_probe,
.remove = omap_twl4030_remove,
};
module_platform_driver(omap_twl4030_driver);
MODULE_AUTHOR("Peter Ujfalusi <peter.ujfalusi@ti.com>");
MODULE_DESCRIPTION("ALSA SoC for TI SoC based boards with twl4030 codec");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:omap-twl4030");
|
