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
|
// SPDX-License-Identifier: GPL-2.0
//
// Copyright (c) 2020 BayLibre, SAS.
// Author: Jerome Brunet <jbrunet@baylibre.com>
#include <linux/bitfield.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <sound/soc-dai.h>
#include <dt-bindings/sound/meson-aiu.h>
#include "aiu.h"
#include "meson-codec-glue.h"
#define CTRL_DIN_EN 15
#define CTRL_CLK_INV BIT(14)
#define CTRL_LRCLK_INV BIT(13)
#define CTRL_I2S_IN_BCLK_SRC BIT(11)
#define CTRL_DIN_LRCLK_SRC_SHIFT 6
#define CTRL_DIN_LRCLK_SRC (0x3 << CTRL_DIN_LRCLK_SRC_SHIFT)
#define CTRL_BCLK_MCLK_SRC GENMASK(5, 4)
#define CTRL_DIN_SKEW GENMASK(3, 2)
#define CTRL_I2S_OUT_LANE_SRC 0
#define AIU_ACODEC_OUT_CHMAX 2
static const char * const aiu_acodec_ctrl_mux_texts[] = {
"DISABLED", "I2S", "PCM",
};
static int aiu_acodec_ctrl_mux_put_enum(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_component *component =
snd_soc_dapm_kcontrol_component(kcontrol);
struct snd_soc_dapm_context *dapm =
snd_soc_dapm_kcontrol_dapm(kcontrol);
struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
unsigned int mux, changed;
mux = snd_soc_enum_item_to_val(e, ucontrol->value.enumerated.item[0]);
changed = snd_soc_component_test_bits(component, e->reg,
CTRL_DIN_LRCLK_SRC,
FIELD_PREP(CTRL_DIN_LRCLK_SRC,
mux));
if (!changed)
return 0;
/* Force disconnect of the mux while updating */
snd_soc_dapm_mux_update_power(dapm, kcontrol, 0, NULL, NULL);
snd_soc_component_update_bits(component, e->reg,
CTRL_DIN_LRCLK_SRC |
CTRL_BCLK_MCLK_SRC,
FIELD_PREP(CTRL_DIN_LRCLK_SRC, mux) |
FIELD_PREP(CTRL_BCLK_MCLK_SRC, mux));
snd_soc_dapm_mux_update_power(dapm, kcontrol, mux, e, NULL);
return 0;
}
static SOC_ENUM_SINGLE_DECL(aiu_acodec_ctrl_mux_enum, AIU_ACODEC_CTRL,
CTRL_DIN_LRCLK_SRC_SHIFT,
aiu_acodec_ctrl_mux_texts);
static const struct snd_kcontrol_new aiu_acodec_ctrl_mux =
SOC_DAPM_ENUM_EXT("ACodec Source", aiu_acodec_ctrl_mux_enum,
snd_soc_dapm_get_enum_double,
aiu_acodec_ctrl_mux_put_enum);
static const struct snd_kcontrol_new aiu_acodec_ctrl_out_enable =
SOC_DAPM_SINGLE_AUTODISABLE("Switch", AIU_ACODEC_CTRL,
CTRL_DIN_EN, 1, 0);
static const struct snd_soc_dapm_widget aiu_acodec_ctrl_widgets[] = {
SND_SOC_DAPM_MUX("ACODEC SRC", SND_SOC_NOPM, 0, 0,
&aiu_acodec_ctrl_mux),
SND_SOC_DAPM_SWITCH("ACODEC OUT EN", SND_SOC_NOPM, 0, 0,
&aiu_acodec_ctrl_out_enable),
};
static int aiu_acodec_ctrl_input_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params,
struct snd_soc_dai *dai)
{
struct meson_codec_glue_input *data;
int ret;
ret = meson_codec_glue_input_hw_params(substream, params, dai);
if (ret)
return ret;
/* The glue will provide 1 lane out of the 4 to the output */
data = meson_codec_glue_input_get_data(dai);
data->params.channels_min = min_t(unsigned int, AIU_ACODEC_OUT_CHMAX,
data->params.channels_min);
data->params.channels_max = min_t(unsigned int, AIU_ACODEC_OUT_CHMAX,
data->params.channels_max);
return 0;
}
static const struct snd_soc_dai_ops aiu_acodec_ctrl_input_ops = {
.hw_params = aiu_acodec_ctrl_input_hw_params,
.set_fmt = meson_codec_glue_input_set_fmt,
};
static const struct snd_soc_dai_ops aiu_acodec_ctrl_output_ops = {
.startup = meson_codec_glue_output_startup,
};
#define AIU_ACODEC_CTRL_FORMATS \
(SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \
SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_LE | \
SNDRV_PCM_FMTBIT_S32_LE)
#define AIU_ACODEC_STREAM(xname, xsuffix, xchmax) \
{ \
.stream_name = xname " " xsuffix, \
.channels_min = 1, \
.channels_max = (xchmax), \
.rate_min = 5512, \
.rate_max = 192000, \
.formats = AIU_ACODEC_CTRL_FORMATS, \
}
#define AIU_ACODEC_INPUT(xname) { \
.name = "ACODEC CTRL " xname, \
.playback = AIU_ACODEC_STREAM(xname, "Playback", 8), \
.ops = &aiu_acodec_ctrl_input_ops, \
.probe = meson_codec_glue_input_dai_probe, \
.remove = meson_codec_glue_input_dai_remove, \
}
#define AIU_ACODEC_OUTPUT(xname) { \
.name = "ACODEC CTRL " xname, \
.capture = AIU_ACODEC_STREAM(xname, "Capture", AIU_ACODEC_OUT_CHMAX), \
.ops = &aiu_acodec_ctrl_output_ops, \
}
static struct snd_soc_dai_driver aiu_acodec_ctrl_dai_drv[] = {
[CTRL_I2S] = AIU_ACODEC_INPUT("ACODEC I2S IN"),
[CTRL_PCM] = AIU_ACODEC_INPUT("ACODEC PCM IN"),
[CTRL_OUT] = AIU_ACODEC_OUTPUT("ACODEC OUT"),
};
static const struct snd_soc_dapm_route aiu_acodec_ctrl_routes[] = {
{ "ACODEC SRC", "I2S", "ACODEC I2S IN Playback" },
{ "ACODEC SRC", "PCM", "ACODEC PCM IN Playback" },
{ "ACODEC OUT EN", "Switch", "ACODEC SRC" },
{ "ACODEC OUT Capture", NULL, "ACODEC OUT EN" },
};
static const struct snd_kcontrol_new aiu_acodec_ctrl_controls[] = {
SOC_SINGLE("ACODEC I2S Lane Select", AIU_ACODEC_CTRL,
CTRL_I2S_OUT_LANE_SRC, 3, 0),
};
static int aiu_acodec_of_xlate_dai_name(struct snd_soc_component *component,
const struct of_phandle_args *args,
const char **dai_name)
{
return aiu_of_xlate_dai_name(component, args, dai_name, AIU_ACODEC);
}
static int aiu_acodec_ctrl_component_probe(struct snd_soc_component *component)
{
/*
* NOTE: Din Skew setting
* According to the documentation, the following update adds one delay
* to the din line. Without this, the output saturates. This happens
* regardless of the link format (i2s or left_j) so it is not clear what
* it actually does but it seems to be required
*/
snd_soc_component_update_bits(component, AIU_ACODEC_CTRL,
CTRL_DIN_SKEW,
FIELD_PREP(CTRL_DIN_SKEW, 2));
return 0;
}
static const struct snd_soc_component_driver aiu_acodec_ctrl_component = {
.name = "AIU Internal DAC Codec Control",
.probe = aiu_acodec_ctrl_component_probe,
.controls = aiu_acodec_ctrl_controls,
.num_controls = ARRAY_SIZE(aiu_acodec_ctrl_controls),
.dapm_widgets = aiu_acodec_ctrl_widgets,
.num_dapm_widgets = ARRAY_SIZE(aiu_acodec_ctrl_widgets),
.dapm_routes = aiu_acodec_ctrl_routes,
.num_dapm_routes = ARRAY_SIZE(aiu_acodec_ctrl_routes),
.of_xlate_dai_name = aiu_acodec_of_xlate_dai_name,
.endianness = 1,
.non_legacy_dai_naming = 1,
#ifdef CONFIG_DEBUG_FS
.debugfs_prefix = "acodec",
#endif
};
int aiu_acodec_ctrl_register_component(struct device *dev)
{
return snd_soc_register_component(dev, &aiu_acodec_ctrl_component,
aiu_acodec_ctrl_dai_drv,
ARRAY_SIZE(aiu_acodec_ctrl_dai_drv));
}
|
