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
|
// SPDX-License-Identifier: GPL-2.0-only
/*
* tegra_wm8753.c - Tegra machine ASoC driver for boards using WM8753 codec.
*
* Author: Stephen Warren <swarren@nvidia.com>
* Copyright (C) 2010-2012 - NVIDIA, Inc.
*
* Based on code copyright/by:
*
* (c) 2009, 2010 Nvidia Graphics Pvt. Ltd.
*
* Copyright 2007 Wolfson Microelectronics PLC.
* Author: Graeme Gregory
* graeme.gregory@wolfsonmicro.com or linux@wolfsonmicro.com
*/
#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 "../codecs/wm8753.h"
#include "tegra_asoc_utils.h"
#define DRV_NAME "tegra-snd-wm8753"
struct tegra_wm8753 {
struct tegra_asoc_utils_data util_data;
};
static int tegra_wm8753_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params)
{
struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
struct snd_soc_card *card = rtd->card;
struct tegra_wm8753 *machine = snd_soc_card_get_drvdata(card);
int srate, mclk;
int err;
srate = params_rate(params);
switch (srate) {
case 11025:
case 22050:
case 44100:
case 88200:
mclk = 11289600;
break;
default:
mclk = 12288000;
break;
}
err = tegra_asoc_utils_set_rate(&machine->util_data, srate, mclk);
if (err < 0) {
dev_err(card->dev, "Can't configure clocks\n");
return err;
}
err = snd_soc_dai_set_sysclk(codec_dai, WM8753_MCLK, mclk,
SND_SOC_CLOCK_IN);
if (err < 0) {
dev_err(card->dev, "codec_dai clock not set\n");
return err;
}
return 0;
}
static const struct snd_soc_ops tegra_wm8753_ops = {
.hw_params = tegra_wm8753_hw_params,
};
static const struct snd_soc_dapm_widget tegra_wm8753_dapm_widgets[] = {
SND_SOC_DAPM_HP("Headphone Jack", NULL),
SND_SOC_DAPM_MIC("Mic Jack", NULL),
};
SND_SOC_DAILINK_DEFS(pcm,
DAILINK_COMP_ARRAY(COMP_EMPTY()),
DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "wm8753-hifi")),
DAILINK_COMP_ARRAY(COMP_EMPTY()));
static struct snd_soc_dai_link tegra_wm8753_dai = {
.name = "WM8753",
.stream_name = "WM8753 PCM",
.ops = &tegra_wm8753_ops,
.dai_fmt = SND_SOC_DAIFMT_I2S |
SND_SOC_DAIFMT_NB_NF |
SND_SOC_DAIFMT_CBS_CFS,
SND_SOC_DAILINK_REG(pcm),
};
static struct snd_soc_card snd_soc_tegra_wm8753 = {
.name = "tegra-wm8753",
.driver_name = "tegra",
.owner = THIS_MODULE,
.dai_link = &tegra_wm8753_dai,
.num_links = 1,
.dapm_widgets = tegra_wm8753_dapm_widgets,
.num_dapm_widgets = ARRAY_SIZE(tegra_wm8753_dapm_widgets),
.fully_routed = true,
};
static int tegra_wm8753_driver_probe(struct platform_device *pdev)
{
struct device_node *np = pdev->dev.of_node;
struct snd_soc_card *card = &snd_soc_tegra_wm8753;
struct tegra_wm8753 *machine;
int ret;
machine = devm_kzalloc(&pdev->dev, sizeof(struct tegra_wm8753),
GFP_KERNEL);
if (!machine)
return -ENOMEM;
card->dev = &pdev->dev;
snd_soc_card_set_drvdata(card, machine);
ret = snd_soc_of_parse_card_name(card, "nvidia,model");
if (ret)
return ret;
ret = snd_soc_of_parse_audio_routing(card, "nvidia,audio-routing");
if (ret)
return ret;
tegra_wm8753_dai.codecs->of_node = of_parse_phandle(np,
"nvidia,audio-codec", 0);
if (!tegra_wm8753_dai.codecs->of_node) {
dev_err(&pdev->dev,
"Property 'nvidia,audio-codec' missing or invalid\n");
return -EINVAL;
}
tegra_wm8753_dai.cpus->of_node = of_parse_phandle(np,
"nvidia,i2s-controller", 0);
if (!tegra_wm8753_dai.cpus->of_node) {
dev_err(&pdev->dev,
"Property 'nvidia,i2s-controller' missing or invalid\n");
return -EINVAL;
}
tegra_wm8753_dai.platforms->of_node = tegra_wm8753_dai.cpus->of_node;
ret = tegra_asoc_utils_init(&machine->util_data, &pdev->dev);
if (ret)
return ret;
ret = devm_snd_soc_register_card(&pdev->dev, card);
if (ret) {
dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n",
ret);
return ret;
}
return 0;
}
static const struct of_device_id tegra_wm8753_of_match[] = {
{ .compatible = "nvidia,tegra-audio-wm8753", },
{},
};
static struct platform_driver tegra_wm8753_driver = {
.driver = {
.name = DRV_NAME,
.pm = &snd_soc_pm_ops,
.of_match_table = tegra_wm8753_of_match,
},
.probe = tegra_wm8753_driver_probe,
};
module_platform_driver(tegra_wm8753_driver);
MODULE_AUTHOR("Stephen Warren <swarren@nvidia.com>");
MODULE_DESCRIPTION("Tegra+WM8753 machine ASoC driver");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:" DRV_NAME);
MODULE_DEVICE_TABLE(of, tegra_wm8753_of_match);
|
