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
|
/*
* ASoC Driver for Dion Audio LOCO DAC-AMP
*
* Author: Miquel Blauw <info@dionaudio.nl>
* Copyright 2016
*
* Based on the software of the RPi-DAC writen by Florian Meier
*
* 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 <sound/core.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <sound/jack.h>
static int snd_rpi_dionaudio_loco_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 *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
unsigned int sample_bits =
snd_pcm_format_physical_width(params_format(params));
return snd_soc_dai_set_bclk_ratio(cpu_dai, sample_bits * 2);
}
/* machine stream operations */
static struct snd_soc_ops snd_rpi_dionaudio_loco_ops = {
.hw_params = snd_rpi_dionaudio_loco_hw_params,
};
SND_SOC_DAILINK_DEFS(dionaudio_loco,
DAILINK_COMP_ARRAY(COMP_CPU("bcm2708-i2s.0")),
DAILINK_COMP_ARRAY(COMP_CODEC("pcm5102a-codec", "pcm5102a-hifi")),
DAILINK_COMP_ARRAY(COMP_PLATFORM("bcm2708-i2s.0")));
static struct snd_soc_dai_link snd_rpi_dionaudio_loco_dai[] = {
{
.name = "DionAudio LOCO",
.stream_name = "DionAudio LOCO DAC-AMP",
.dai_fmt = SND_SOC_DAIFMT_I2S |
SND_SOC_DAIFMT_NB_NF |
SND_SOC_DAIFMT_CBS_CFS,
.ops = &snd_rpi_dionaudio_loco_ops,
SND_SOC_DAILINK_REG(dionaudio_loco),
},
};
/* audio machine driver */
static struct snd_soc_card snd_rpi_dionaudio_loco = {
.name = "snd_rpi_dionaudio_loco",
.dai_link = snd_rpi_dionaudio_loco_dai,
.num_links = ARRAY_SIZE(snd_rpi_dionaudio_loco_dai),
};
static int snd_rpi_dionaudio_loco_probe(struct platform_device *pdev)
{
struct device_node *np;
int ret = 0;
snd_rpi_dionaudio_loco.dev = &pdev->dev;
np = pdev->dev.of_node;
if (np) {
struct snd_soc_dai_link *dai = &snd_rpi_dionaudio_loco_dai[0];
struct device_node *i2s_np;
i2s_np = of_parse_phandle(np, "i2s-controller", 0);
if (i2s_np) {
dai->cpus->dai_name = NULL;
dai->cpus->of_node = i2s_np;
dai->platforms->name = NULL;
dai->platforms->of_node = i2s_np;
}
}
ret = devm_snd_soc_register_card(&pdev->dev, &snd_rpi_dionaudio_loco);
if (ret && ret != -EPROBE_DEFER)
dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
ret);
return ret;
}
static const struct of_device_id snd_rpi_dionaudio_loco_of_match[] = {
{ .compatible = "dionaudio,loco-pcm5242-tpa3118", },
{ /* sentinel */ },
};
MODULE_DEVICE_TABLE(of, snd_rpi_dionaudio_loco_of_match);
static struct platform_driver snd_rpi_dionaudio_loco_driver = {
.driver = {
.name = "snd-dionaudio-loco",
.owner = THIS_MODULE,
.of_match_table = snd_rpi_dionaudio_loco_of_match,
},
.probe = snd_rpi_dionaudio_loco_probe,
};
module_platform_driver(snd_rpi_dionaudio_loco_driver);
MODULE_AUTHOR("Miquel Blauw <info@dionaudio.nl>");
MODULE_DESCRIPTION("ASoC Driver for DionAudio LOCO");
MODULE_LICENSE("GPL v2");
|
