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
|
// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright 2018 Google, LLC
* Written by Simon Glass <sjg@chromium.org>
*/
#define LOG_CATEGORY UCLASS_SOUND
#include <common.h>
#include <audio_codec.h>
#include <clk.h>
#include <dm.h>
#include <i2s.h>
#include <log.h>
#include <misc.h>
#include <sound.h>
#include <asm/arch-rockchip/periph.h>
#include <dm/pinctrl.h>
static int rockchip_sound_setup(struct udevice *dev)
{
struct sound_uc_priv *uc_priv = dev_get_uclass_priv(dev);
struct i2s_uc_priv *i2c_priv = dev_get_uclass_priv(uc_priv->i2s);
int ret;
if (uc_priv->setup_done)
return -EALREADY;
ret = audio_codec_set_params(uc_priv->codec, i2c_priv->id,
i2c_priv->samplingrate,
i2c_priv->samplingrate * i2c_priv->rfs,
i2c_priv->bitspersample,
i2c_priv->channels);
if (ret)
return ret;
uc_priv->setup_done = true;
return 0;
}
static int rockchip_sound_play(struct udevice *dev, void *data, uint data_size)
{
struct sound_uc_priv *uc_priv = dev_get_uclass_priv(dev);
return i2s_tx_data(uc_priv->i2s, data, data_size);
}
static int rockchip_sound_probe(struct udevice *dev)
{
struct sound_uc_priv *uc_priv = dev_get_uclass_priv(dev);
struct ofnode_phandle_args args;
struct udevice *pinctrl;
struct clk clk;
ofnode node;
int ret;
node = ofnode_find_subnode(dev_ofnode(dev), "cpu");
if (!ofnode_valid(node)) {
log_debug("Failed to find /cpu subnode\n");
return -EINVAL;
}
ret = ofnode_parse_phandle_with_args(node, "sound-dai",
"#sound-dai-cells", 0, 0, &args);
if (ret) {
log_debug("Cannot find i2s phandle: %d\n", ret);
return ret;
}
ret = uclass_get_device_by_ofnode(UCLASS_I2S, args.node, &uc_priv->i2s);
if (ret) {
log_debug("Cannot find i2s: %d\n", ret);
return ret;
}
node = ofnode_find_subnode(dev_ofnode(dev), "codec");
if (!ofnode_valid(node)) {
log_debug("Failed to find /codec subnode\n");
return -EINVAL;
}
ret = ofnode_parse_phandle_with_args(node, "sound-dai",
"#sound-dai-cells", 0, 0, &args);
if (ret) {
log_debug("Cannot find codec phandle: %d\n", ret);
return ret;
}
ret = uclass_get_device_by_ofnode(UCLASS_AUDIO_CODEC, args.node,
&uc_priv->codec);
if (ret) {
log_debug("Cannot find audio codec: %d\n", ret);
return ret;
}
ret = clk_get_by_index(uc_priv->i2s, 1, &clk);
if (ret) {
log_debug("Cannot find clock: %d\n", ret);
return ret;
}
ret = clk_set_rate(&clk, 12288000);
if (ret < 0) {
log_debug("Cannot find clock: %d\n", ret);
return ret;
}
ret = uclass_get_device(UCLASS_PINCTRL, 0, &pinctrl);
if (ret) {
debug("%s: Cannot find pinctrl device\n", __func__);
return ret;
}
ret = pinctrl_request(pinctrl, PERIPH_ID_I2S, 0);
if (ret) {
debug("%s: Cannot select I2C pinctrl\n", __func__);
return ret;
}
log_debug("Probed sound '%s' with codec '%s' and i2s '%s'\n", dev->name,
uc_priv->codec->name, uc_priv->i2s->name);
return 0;
}
static const struct sound_ops rockchip_sound_ops = {
.setup = rockchip_sound_setup,
.play = rockchip_sound_play,
};
static const struct udevice_id rockchip_sound_ids[] = {
{ .compatible = "rockchip,audio-max98090-jerry" },
{ }
};
U_BOOT_DRIVER(rockchip_sound) = {
.name = "rockchip_sound",
.id = UCLASS_SOUND,
.of_match = rockchip_sound_ids,
.probe = rockchip_sound_probe,
.ops = &rockchip_sound_ops,
};
|
