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
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
|
/*
* tegra_sgtl5000.c - Tegra machine ASoC driver for boards using SGTL5000 codec
*
* Author: Marcel Ziswiler <marcel@ziswiler.com>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope 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 <http://www.gnu.org/licenses/>.
*
* Based on code copyright/by:
*
* Copyright (C) 2010-2012 - NVIDIA, Inc.
* (c) 2009, 2010 Nvidia Graphics Pvt. Ltd.
* Copyright 2007 Wolfson Microelectronics PLC.
*/
#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/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include "../codecs/sgtl5000.h"
#include "tegra_asoc_utils.h"
#define DRV_NAME "tegra-snd-sgtl5000"
struct tegra_sgtl5000 {
struct tegra_asoc_utils_data util_data;
};
static int tegra_sgtl5000_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_card *card = rtd->card;
struct tegra_sgtl5000 *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, SGTL5000_SYSCLK, mclk,
SND_SOC_CLOCK_IN);
if (err < 0) {
dev_err(card->dev, "codec_dai clock not set\n");
return err;
}
return 0;
}
static struct snd_soc_ops tegra_sgtl5000_ops = {
.hw_params = tegra_sgtl5000_hw_params,
};
static const struct snd_soc_dapm_widget tegra_sgtl5000_dapm_widgets[] = {
SND_SOC_DAPM_HP("Headphone Jack", NULL),
SND_SOC_DAPM_LINE("Line In Jack", NULL),
SND_SOC_DAPM_MIC("Mic Jack", NULL),
};
static struct snd_soc_dai_link tegra_sgtl5000_dai = {
.name = "sgtl5000",
.stream_name = "HiFi",
.codec_dai_name = "sgtl5000",
.ops = &tegra_sgtl5000_ops,
.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
SND_SOC_DAIFMT_CBS_CFS,
};
static struct snd_soc_card snd_soc_tegra_sgtl5000 = {
.name = "tegra-sgtl5000",
.driver_name = "tegra",
.owner = THIS_MODULE,
.dai_link = &tegra_sgtl5000_dai,
.num_links = 1,
.dapm_widgets = tegra_sgtl5000_dapm_widgets,
.num_dapm_widgets = ARRAY_SIZE(tegra_sgtl5000_dapm_widgets),
.fully_routed = true,
};
static int tegra_sgtl5000_driver_probe(struct platform_device *pdev)
{
struct device_node *np = pdev->dev.of_node;
struct snd_soc_card *card = &snd_soc_tegra_sgtl5000;
struct tegra_sgtl5000 *machine;
int ret;
machine = devm_kzalloc(&pdev->dev, sizeof(struct tegra_sgtl5000),
GFP_KERNEL);
if (!machine) {
dev_err(&pdev->dev, "Can't allocate tegra_sgtl5000 struct\n");
return -ENOMEM;
}
card->dev = &pdev->dev;
platform_set_drvdata(pdev, card);
snd_soc_card_set_drvdata(card, machine);
ret = snd_soc_of_parse_card_name(card, "nvidia,model");
if (ret)
goto err;
ret = snd_soc_of_parse_audio_routing(card, "nvidia,audio-routing");
if (ret)
goto err;
tegra_sgtl5000_dai.codec_of_node = of_parse_phandle(np,
"nvidia,audio-codec", 0);
if (!tegra_sgtl5000_dai.codec_of_node) {
dev_err(&pdev->dev,
"Property 'nvidia,audio-codec' missing or invalid\n");
ret = -EINVAL;
goto err;
}
tegra_sgtl5000_dai.cpu_of_node = of_parse_phandle(np,
"nvidia,i2s-controller", 0);
if (!tegra_sgtl5000_dai.cpu_of_node) {
dev_err(&pdev->dev,
"Property 'nvidia,i2s-controller' missing/invalid\n");
ret = -EINVAL;
goto err_put_codec_of_node;
}
tegra_sgtl5000_dai.platform_of_node = tegra_sgtl5000_dai.cpu_of_node;
ret = tegra_asoc_utils_init(&machine->util_data, &pdev->dev);
if (ret)
goto err_put_cpu_of_node;
ret = snd_soc_register_card(card);
if (ret) {
dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n",
ret);
goto err_fini_utils;
}
return 0;
err_fini_utils:
tegra_asoc_utils_fini(&machine->util_data);
err_put_cpu_of_node:
of_node_put(tegra_sgtl5000_dai.cpu_of_node);
tegra_sgtl5000_dai.cpu_of_node = NULL;
tegra_sgtl5000_dai.platform_of_node = NULL;
err_put_codec_of_node:
of_node_put(tegra_sgtl5000_dai.codec_of_node);
tegra_sgtl5000_dai.codec_of_node = NULL;
err:
return ret;
}
static int tegra_sgtl5000_driver_remove(struct platform_device *pdev)
{
struct snd_soc_card *card = platform_get_drvdata(pdev);
struct tegra_sgtl5000 *machine = snd_soc_card_get_drvdata(card);
int ret;
ret = snd_soc_unregister_card(card);
tegra_asoc_utils_fini(&machine->util_data);
of_node_put(tegra_sgtl5000_dai.cpu_of_node);
tegra_sgtl5000_dai.cpu_of_node = NULL;
tegra_sgtl5000_dai.platform_of_node = NULL;
of_node_put(tegra_sgtl5000_dai.codec_of_node);
tegra_sgtl5000_dai.codec_of_node = NULL;
return ret;
}
static const struct of_device_id tegra_sgtl5000_of_match[] = {
{ .compatible = "nvidia,tegra-audio-sgtl5000", },
{ /* sentinel */ },
};
static struct platform_driver tegra_sgtl5000_driver = {
.driver = {
.name = DRV_NAME,
.pm = &snd_soc_pm_ops,
.of_match_table = tegra_sgtl5000_of_match,
},
.probe = tegra_sgtl5000_driver_probe,
.remove = tegra_sgtl5000_driver_remove,
};
module_platform_driver(tegra_sgtl5000_driver);
MODULE_AUTHOR("Marcel Ziswiler <marcel@ziswiler.com>");
MODULE_DESCRIPTION("Tegra SGTL5000 machine ASoC driver");
MODULE_LICENSE("GPL v2");
MODULE_ALIAS("platform:" DRV_NAME);
MODULE_DEVICE_TABLE(of, tegra_sgtl5000_of_match);
|
