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
|
From 4a15efde52bb79bf44e63b998cd84f896404d728 Mon Sep 17 00:00:00 2001
From: Dimitris Papavasiliou <dpapavas@gmail.com>
Date: Sat, 24 Nov 2018 22:05:42 +0200
Subject: [PATCH] ASoC: pcm512x: Implement the digital_mute interface
[ Upstream commit 3500f1c589e92e0b6b1f8d31b4084fbde08d49cb ]
Clicks and pops of various volumes can be produced while the device is
opened, closed, put into and taken out of standby, or reconfigured.
Fix this, by implementing the digital_mute interface, so that the
output is muted during such operations.
Signed-off-by: Dimitris Papavasiliou <dpapavas@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
---
sound/soc/codecs/pcm512x.c | 121 ++++++++++++++++++++++++++++++++++++-
sound/soc/codecs/pcm512x.h | 2 +
2 files changed, 121 insertions(+), 2 deletions(-)
--- a/sound/soc/codecs/pcm512x.c
+++ b/sound/soc/codecs/pcm512x.c
@@ -53,6 +53,8 @@ struct pcm512x_priv {
unsigned long overclock_pll;
unsigned long overclock_dac;
unsigned long overclock_dsp;
+ int mute;
+ struct mutex mutex;
int lrclk_div;
};
@@ -385,6 +387,61 @@ static const struct soc_enum pcm512x_ved
SOC_ENUM_SINGLE(PCM512x_DIGITAL_MUTE_2, PCM512x_VEDS_SHIFT, 4,
pcm512x_ramp_step_text);
+static int pcm512x_update_mute(struct pcm512x_priv *pcm512x)
+{
+ return regmap_update_bits(
+ pcm512x->regmap, PCM512x_MUTE, PCM512x_RQML | PCM512x_RQMR,
+ (!!(pcm512x->mute & 0x5) << PCM512x_RQML_SHIFT)
+ | (!!(pcm512x->mute & 0x3) << PCM512x_RQMR_SHIFT));
+}
+
+static int pcm512x_digital_playback_switch_get(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
+ struct pcm512x_priv *pcm512x = snd_soc_component_get_drvdata(component);
+
+ mutex_lock(&pcm512x->mutex);
+ ucontrol->value.integer.value[0] = !(pcm512x->mute & 0x4);
+ ucontrol->value.integer.value[1] = !(pcm512x->mute & 0x2);
+ mutex_unlock(&pcm512x->mutex);
+
+ return 0;
+}
+
+static int pcm512x_digital_playback_switch_put(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
+ struct pcm512x_priv *pcm512x = snd_soc_component_get_drvdata(component);
+ int ret, changed = 0;
+
+ mutex_lock(&pcm512x->mutex);
+
+ if ((pcm512x->mute & 0x4) == (ucontrol->value.integer.value[0] << 2)) {
+ pcm512x->mute ^= 0x4;
+ changed = 1;
+ }
+ if ((pcm512x->mute & 0x2) == (ucontrol->value.integer.value[1] << 1)) {
+ pcm512x->mute ^= 0x2;
+ changed = 1;
+ }
+
+ if (changed) {
+ ret = pcm512x_update_mute(pcm512x);
+ if (ret != 0) {
+ dev_err(component->dev,
+ "Failed to update digital mute: %d\n", ret);
+ mutex_unlock(&pcm512x->mutex);
+ return ret;
+ }
+ }
+
+ mutex_unlock(&pcm512x->mutex);
+
+ return changed;
+}
+
static const struct snd_kcontrol_new pcm512x_controls[] = {
SOC_DOUBLE_R_TLV("Digital Playback Volume", PCM512x_DIGITAL_VOLUME_2,
PCM512x_DIGITAL_VOLUME_3, 0, 255, 1, digital_tlv),
@@ -392,8 +449,15 @@ SOC_DOUBLE_TLV("Analogue Playback Volume
PCM512x_LAGN_SHIFT, PCM512x_RAGN_SHIFT, 1, 1, analog_tlv),
SOC_DOUBLE_TLV("Analogue Playback Boost Volume", PCM512x_ANALOG_GAIN_BOOST,
PCM512x_AGBL_SHIFT, PCM512x_AGBR_SHIFT, 1, 0, boost_tlv),
-SOC_DOUBLE("Digital Playback Switch", PCM512x_MUTE, PCM512x_RQML_SHIFT,
- PCM512x_RQMR_SHIFT, 1, 1),
+{
+ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+ .name = "Digital Playback Switch",
+ .index = 0,
+ .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
+ .info = snd_ctl_boolean_stereo_info,
+ .get = pcm512x_digital_playback_switch_get,
+ .put = pcm512x_digital_playback_switch_put
+},
SOC_SINGLE("Deemphasis Switch", PCM512x_DSP, PCM512x_DEMP_SHIFT, 1, 1),
SOC_ENUM("DSP Program", pcm512x_dsp_program),
@@ -1323,6 +1387,56 @@ static int pcm512x_set_fmt(struct snd_so
return 0;
}
+static int pcm512x_digital_mute(struct snd_soc_dai *dai, int mute)
+{
+ struct snd_soc_component *component = dai->component;
+ struct pcm512x_priv *pcm512x = snd_soc_component_get_drvdata(component);
+ int ret;
+ unsigned int mute_det;
+
+ mutex_lock(&pcm512x->mutex);
+
+ if (mute) {
+ pcm512x->mute |= 0x1;
+ ret = regmap_update_bits(pcm512x->regmap, PCM512x_MUTE,
+ PCM512x_RQML | PCM512x_RQMR,
+ PCM512x_RQML | PCM512x_RQMR);
+ if (ret != 0) {
+ dev_err(component->dev,
+ "Failed to set digital mute: %d\n", ret);
+ mutex_unlock(&pcm512x->mutex);
+ return ret;
+ }
+
+ regmap_read_poll_timeout(pcm512x->regmap,
+ PCM512x_ANALOG_MUTE_DET,
+ mute_det, (mute_det & 0x3) == 0,
+ 200, 10000);
+
+ mutex_unlock(&pcm512x->mutex);
+ } else {
+ pcm512x->mute &= ~0x1;
+ ret = pcm512x_update_mute(pcm512x);
+ if (ret != 0) {
+ dev_err(component->dev,
+ "Failed to update digital mute: %d\n", ret);
+ mutex_unlock(&pcm512x->mutex);
+ return ret;
+ }
+
+ regmap_read_poll_timeout(pcm512x->regmap,
+ PCM512x_ANALOG_MUTE_DET,
+ mute_det,
+ (mute_det & 0x3)
+ == ((~pcm512x->mute >> 1) & 0x3),
+ 200, 10000);
+ }
+
+ mutex_unlock(&pcm512x->mutex);
+
+ return 0;
+}
+
static int pcm512x_set_tdm_slot(struct snd_soc_dai *dai,
unsigned int tx_mask, unsigned int rx_mask,
int slots, int width)
@@ -1348,6 +1462,7 @@ static const struct snd_soc_dai_ops pcm5
.startup = pcm512x_dai_startup,
.hw_params = pcm512x_hw_params,
.set_fmt = pcm512x_set_fmt,
+ .digital_mute = pcm512x_digital_mute,
.set_tdm_slot = pcm512x_set_tdm_slot,
};
@@ -1414,6 +1529,8 @@ int pcm512x_probe(struct device *dev, st
if (!pcm512x)
return -ENOMEM;
+ mutex_init(&pcm512x->mutex);
+
dev_set_drvdata(dev, pcm512x);
pcm512x->regmap = regmap;
--- a/sound/soc/codecs/pcm512x.h
+++ b/sound/soc/codecs/pcm512x.h
@@ -112,7 +112,9 @@
#define PCM512x_RQST_SHIFT 4
/* Page 0, Register 3 - mute */
+#define PCM512x_RQMR (1 << 0)
#define PCM512x_RQMR_SHIFT 0
+#define PCM512x_RQML (1 << 4)
#define PCM512x_RQML_SHIFT 4
/* Page 0, Register 4 - PLL */
|
