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
|
/*
* tegra20_wm9712.c - Tegra machine ASoC driver for boards using WM9712 codec.
*
* Copyright 2012 Lucas Stach <dev@lynxeye.de>
*
* Partly based on code copyright/by:
* Copyright 2011,2012 Toradex Inc.
*
* 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.
*
*/
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
#include <linux/gpio.h>
#include <linux/of_gpio.h>
#include <sound/core.h>
#include <sound/jack.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include "tegra_asoc_utils.h"
#define DRV_NAME "tegra-snd-wm9712"
struct tegra_wm9712 {
struct platform_device *codec;
struct tegra_asoc_utils_data util_data;
};
static const struct snd_soc_dapm_widget tegra_wm9712_dapm_widgets[] = {
SND_SOC_DAPM_HP("Headphone", NULL),
SND_SOC_DAPM_LINE("LineIn", NULL),
SND_SOC_DAPM_MIC("Mic", NULL),
};
static int tegra_wm9712_init(struct snd_soc_pcm_runtime *rtd)
{
return snd_soc_dapm_force_enable_pin(&rtd->card->dapm, "Mic Bias");
}
static struct snd_soc_dai_link tegra_wm9712_dai = {
.name = "AC97 HiFi",
.stream_name = "AC97 HiFi",
.codec_dai_name = "wm9712-hifi",
.codec_name = "wm9712-codec",
.init = tegra_wm9712_init,
};
static struct snd_soc_card snd_soc_tegra_wm9712 = {
.name = "tegra-wm9712",
.owner = THIS_MODULE,
.dai_link = &tegra_wm9712_dai,
.num_links = 1,
.dapm_widgets = tegra_wm9712_dapm_widgets,
.num_dapm_widgets = ARRAY_SIZE(tegra_wm9712_dapm_widgets),
.fully_routed = true,
};
static int tegra_wm9712_driver_probe(struct platform_device *pdev)
{
struct device_node *np = pdev->dev.of_node;
struct snd_soc_card *card = &snd_soc_tegra_wm9712;
struct tegra_wm9712 *machine;
int ret;
machine = devm_kzalloc(&pdev->dev, sizeof(struct tegra_wm9712),
GFP_KERNEL);
if (!machine) {
dev_err(&pdev->dev, "Can't allocate tegra_wm9712 struct\n");
return -ENOMEM;
}
card->dev = &pdev->dev;
platform_set_drvdata(pdev, card);
snd_soc_card_set_drvdata(card, machine);
machine->codec = platform_device_alloc("wm9712-codec", -1);
if (!machine->codec) {
dev_err(&pdev->dev, "Can't allocate wm9712 platform device\n");
return -ENOMEM;
}
ret = platform_device_add(machine->codec);
if (ret)
goto codec_put;
ret = snd_soc_of_parse_card_name(card, "nvidia,model");
if (ret)
goto codec_unregister;
ret = snd_soc_of_parse_audio_routing(card, "nvidia,audio-routing");
if (ret)
goto codec_unregister;
tegra_wm9712_dai.cpu_of_node = of_parse_phandle(np,
"nvidia,ac97-controller", 0);
if (!tegra_wm9712_dai.cpu_of_node) {
dev_err(&pdev->dev,
"Property 'nvidia,ac97-controller' missing or invalid\n");
ret = -EINVAL;
goto codec_unregister;
}
tegra_wm9712_dai.platform_of_node = tegra_wm9712_dai.cpu_of_node;
ret = tegra_asoc_utils_init(&machine->util_data, &pdev->dev);
if (ret)
goto codec_unregister;
ret = tegra_asoc_utils_set_ac97_rate(&machine->util_data);
if (ret)
goto asoc_utils_fini;
ret = snd_soc_register_card(card);
if (ret) {
dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n",
ret);
goto asoc_utils_fini;
}
return 0;
asoc_utils_fini:
tegra_asoc_utils_fini(&machine->util_data);
codec_unregister:
platform_device_del(machine->codec);
codec_put:
platform_device_put(machine->codec);
return ret;
}
static int tegra_wm9712_driver_remove(struct platform_device *pdev)
{
struct snd_soc_card *card = platform_get_drvdata(pdev);
struct tegra_wm9712 *machine = snd_soc_card_get_drvdata(card);
snd_soc_unregister_card(card);
tegra_asoc_utils_fini(&machine->util_data);
platform_device_unregister(machine->codec);
return 0;
}
static const struct of_device_id tegra_wm9712_of_match[] = {
{ .compatible = "nvidia,tegra-audio-wm9712", },
{},
};
static struct platform_driver tegra_wm9712_driver = {
.driver = {
.name = DRV_NAME,
.pm = &snd_soc_pm_ops,
.of_match_table = tegra_wm9712_of_match,
},
.probe = tegra_wm9712_driver_probe,
.remove = tegra_wm9712_driver_remove,
};
module_platform_driver(tegra_wm9712_driver);
MODULE_AUTHOR("Lucas Stach");
MODULE_DESCRIPTION("Tegra+WM9712 machine ASoC driver");
MODULE_LICENSE("GPL v2");
MODULE_ALIAS("platform:" DRV_NAME);
MODULE_DEVICE_TABLE(of, tegra_wm9712_of_match);
|
