summaryrefslogtreecommitdiff
path: root/sound/soc/codecs/max9877.c
blob: 3bf86328d5cd01e1833bb51408ad6e490a722e76 (plain)
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
// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * max9877.c  --  amp driver for max9877
 *
 * Copyright (C) 2009 Samsung Electronics Co.Ltd
 * Author: Joonyoung Shim <jy0922.shim@samsung.com>
 */

#include <linux/module.h>
#include <linux/init.h>
#include <linux/i2c.h>
#include <linux/regmap.h>
#include <sound/soc.h>
#include <sound/tlv.h>

#include "max9877.h"

static const struct reg_default max9877_regs[] = {
	{ 0, 0x40 },
	{ 1, 0x00 },
	{ 2, 0x00 },
	{ 3, 0x00 },
	{ 4, 0x49 },
};

static const DECLARE_TLV_DB_RANGE(max9877_pgain_tlv,
	0, 1, TLV_DB_SCALE_ITEM(0, 900, 0),
	2, 2, TLV_DB_SCALE_ITEM(2000, 0, 0)
);

static const DECLARE_TLV_DB_RANGE(max9877_output_tlv,
	0, 7, TLV_DB_SCALE_ITEM(-7900, 400, 1),
	8, 15, TLV_DB_SCALE_ITEM(-4700, 300, 0),
	16, 23, TLV_DB_SCALE_ITEM(-2300, 200, 0),
	24, 31, TLV_DB_SCALE_ITEM(-700, 100, 0)
);

static const char *max9877_out_mode[] = {
	"INA -> SPK",
	"INA -> HP",
	"INA -> SPK and HP",
	"INB -> SPK",
	"INB -> HP",
	"INB -> SPK and HP",
	"INA + INB -> SPK",
	"INA + INB -> HP",
	"INA + INB -> SPK and HP",
};

static const char *max9877_osc_mode[] = {
	"1176KHz",
	"1100KHz",
	"700KHz",
};

static const struct soc_enum max9877_enum[] = {
	SOC_ENUM_SINGLE(MAX9877_OUTPUT_MODE, 0, ARRAY_SIZE(max9877_out_mode),
			max9877_out_mode),
	SOC_ENUM_SINGLE(MAX9877_OUTPUT_MODE, MAX9877_OSC_OFFSET,
			ARRAY_SIZE(max9877_osc_mode), max9877_osc_mode),
};

static const struct snd_kcontrol_new max9877_controls[] = {
	SOC_SINGLE_TLV("MAX9877 PGAINA Playback Volume",
		       MAX9877_INPUT_MODE, 0, 2, 0, max9877_pgain_tlv),
	SOC_SINGLE_TLV("MAX9877 PGAINB Playback Volume",
		       MAX9877_INPUT_MODE, 2, 2, 0, max9877_pgain_tlv),
	SOC_SINGLE_TLV("MAX9877 Amp Speaker Playback Volume",
		       MAX9877_SPK_VOLUME, 0, 31, 0, max9877_output_tlv),
	SOC_DOUBLE_R_TLV("MAX9877 Amp HP Playback Volume",
			 MAX9877_HPL_VOLUME, MAX9877_HPR_VOLUME, 0, 31, 0,
			 max9877_output_tlv),
	SOC_SINGLE("MAX9877 INB Stereo Switch",
		   MAX9877_INPUT_MODE, 4, 1, 1),
	SOC_SINGLE("MAX9877 INA Stereo Switch",
		   MAX9877_INPUT_MODE, 5, 1, 1),
	SOC_SINGLE("MAX9877 Zero-crossing detection Switch",
		   MAX9877_INPUT_MODE, 6, 1, 0),
	SOC_SINGLE("MAX9877 Bypass Mode Switch",
		   MAX9877_OUTPUT_MODE, 6, 1, 0),
	SOC_ENUM("MAX9877 Output Mode", max9877_enum[0]),
	SOC_ENUM("MAX9877 Oscillator Mode", max9877_enum[1]),
};

static const struct snd_soc_dapm_widget max9877_dapm_widgets[] = {
SND_SOC_DAPM_INPUT("INA1"),
SND_SOC_DAPM_INPUT("INA2"),
SND_SOC_DAPM_INPUT("INB1"),
SND_SOC_DAPM_INPUT("INB2"),
SND_SOC_DAPM_INPUT("RXIN+"),
SND_SOC_DAPM_INPUT("RXIN-"),

SND_SOC_DAPM_PGA("SHDN", MAX9877_OUTPUT_MODE, 7, 1, NULL, 0),

SND_SOC_DAPM_OUTPUT("OUT+"),
SND_SOC_DAPM_OUTPUT("OUT-"),
SND_SOC_DAPM_OUTPUT("HPL"),
SND_SOC_DAPM_OUTPUT("HPR"),
};

static const struct snd_soc_dapm_route max9877_dapm_routes[] = {
	{ "SHDN", NULL, "INA1" },
	{ "SHDN", NULL, "INA2" },
	{ "SHDN", NULL, "INB1" },
	{ "SHDN", NULL, "INB2" },

	{ "OUT+", NULL, "RXIN+" },
	{ "OUT+", NULL, "SHDN" },

	{ "OUT-", NULL, "SHDN" },
	{ "OUT-", NULL, "RXIN-" },

	{ "HPL", NULL, "SHDN" },
	{ "HPR", NULL, "SHDN" },
};

static const struct snd_soc_component_driver max9877_component_driver = {
	.controls = max9877_controls,
	.num_controls = ARRAY_SIZE(max9877_controls),

	.dapm_widgets = max9877_dapm_widgets,
	.num_dapm_widgets = ARRAY_SIZE(max9877_dapm_widgets),
	.dapm_routes = max9877_dapm_routes,
	.num_dapm_routes = ARRAY_SIZE(max9877_dapm_routes),
};

static const struct regmap_config max9877_regmap = {
	.reg_bits = 8,
	.val_bits = 8,

	.reg_defaults = max9877_regs,
	.num_reg_defaults = ARRAY_SIZE(max9877_regs),
	.cache_type = REGCACHE_RBTREE,
};

static int max9877_i2c_probe(struct i2c_client *client)
{
	struct regmap *regmap;
	int i;

	regmap = devm_regmap_init_i2c(client, &max9877_regmap);
	if (IS_ERR(regmap))
		return PTR_ERR(regmap);

	/* Ensure the device is in reset state */
	for (i = 0; i < ARRAY_SIZE(max9877_regs); i++)
		regmap_write(regmap, max9877_regs[i].reg, max9877_regs[i].def);

	return devm_snd_soc_register_component(&client->dev,
			&max9877_component_driver, NULL, 0);
}

static const struct i2c_device_id max9877_i2c_id[] = {
	{ "max9877", 0 },
	{ }
};
MODULE_DEVICE_TABLE(i2c, max9877_i2c_id);

static struct i2c_driver max9877_i2c_driver = {
	.driver = {
		.name = "max9877",
	},
	.probe_new = max9877_i2c_probe,
	.id_table = max9877_i2c_id,
};

module_i2c_driver(max9877_i2c_driver);

MODULE_DESCRIPTION("ASoC MAX9877 amp driver");
MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>");
MODULE_LICENSE("GPL");