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Joonyoung Shim9db9ed92009-07-15 20:34:00 +09001/*
2 * max9877.c -- amp driver for max9877
3 *
4 * Copyright (C) 2009 Samsung Electronics Co.Ltd
5 * Author: Joonyoung Shim <jy0922.shim@samsung.com>
6 *
7 * This program is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License as published by the
9 * Free Software Foundation; either version 2 of the License, or (at your
10 * option) any later version.
11 *
12 */
13
14#include <linux/module.h>
15#include <linux/init.h>
16#include <linux/i2c.h>
Mark Brown997288e2013-08-13 13:10:19 +010017#include <linux/regmap.h>
Joonyoung Shim9db9ed92009-07-15 20:34:00 +090018#include <sound/soc.h>
19#include <sound/tlv.h>
20
21#include "max9877.h"
22
Mark Brown997288e2013-08-13 13:10:19 +010023static struct regmap *regmap;
Joonyoung Shim9db9ed92009-07-15 20:34:00 +090024
Mark Brown997288e2013-08-13 13:10:19 +010025static struct reg_default max9877_regs[] = {
26 { 0, 0x40 },
27 { 1, 0x00 },
28 { 2, 0x00 },
29 { 3, 0x00 },
30 { 4, 0x49 },
31};
Joonyoung Shim9db9ed92009-07-15 20:34:00 +090032
Joonyoung Shim9db9ed92009-07-15 20:34:00 +090033static const unsigned int max9877_pgain_tlv[] = {
34 TLV_DB_RANGE_HEAD(2),
35 0, 1, TLV_DB_SCALE_ITEM(0, 900, 0),
36 2, 2, TLV_DB_SCALE_ITEM(2000, 0, 0),
37};
38
39static const unsigned int max9877_output_tlv[] = {
40 TLV_DB_RANGE_HEAD(4),
41 0, 7, TLV_DB_SCALE_ITEM(-7900, 400, 1),
42 8, 15, TLV_DB_SCALE_ITEM(-4700, 300, 0),
43 16, 23, TLV_DB_SCALE_ITEM(-2300, 200, 0),
44 24, 31, TLV_DB_SCALE_ITEM(-700, 100, 0),
45};
46
47static const char *max9877_out_mode[] = {
48 "INA -> SPK",
49 "INA -> HP",
50 "INA -> SPK and HP",
51 "INB -> SPK",
52 "INB -> HP",
53 "INB -> SPK and HP",
54 "INA + INB -> SPK",
55 "INA + INB -> HP",
56 "INA + INB -> SPK and HP",
57};
58
59static const char *max9877_osc_mode[] = {
60 "1176KHz",
61 "1100KHz",
62 "700KHz",
63};
64
65static const struct soc_enum max9877_enum[] = {
Mark Brownd76a9612013-08-13 13:20:15 +010066 SOC_ENUM_SINGLE(MAX9877_OUTPUT_MODE, 0, ARRAY_SIZE(max9877_out_mode),
67 max9877_out_mode),
68 SOC_ENUM_SINGLE(MAX9877_OUTPUT_MODE, MAX9877_OSC_OFFSET,
69 ARRAY_SIZE(max9877_osc_mode), max9877_osc_mode),
Joonyoung Shim9db9ed92009-07-15 20:34:00 +090070};
71
72static const struct snd_kcontrol_new max9877_controls[] = {
Mark Brownd76a9612013-08-13 13:20:15 +010073 SOC_SINGLE_TLV("MAX9877 PGAINA Playback Volume",
74 MAX9877_INPUT_MODE, 0, 2, 0, max9877_pgain_tlv),
75 SOC_SINGLE_TLV("MAX9877 PGAINB Playback Volume",
76 MAX9877_INPUT_MODE, 2, 2, 0, max9877_pgain_tlv),
77 SOC_SINGLE_TLV("MAX9877 Amp Speaker Playback Volume",
78 MAX9877_SPK_VOLUME, 0, 31, 0, max9877_output_tlv),
79 SOC_DOUBLE_R_TLV("MAX9877 Amp HP Playback Volume",
80 MAX9877_HPL_VOLUME, MAX9877_HPR_VOLUME, 0, 31, 0,
81 max9877_output_tlv),
82 SOC_SINGLE("MAX9877 INB Stereo Switch",
83 MAX9877_INPUT_MODE, 4, 1, 1),
84 SOC_SINGLE("MAX9877 INA Stereo Switch",
85 MAX9877_INPUT_MODE, 5, 1, 1),
86 SOC_SINGLE("MAX9877 Zero-crossing detection Switch",
87 MAX9877_INPUT_MODE, 6, 1, 0),
88 SOC_SINGLE("MAX9877 Bypass Mode Switch",
89 MAX9877_OUTPUT_MODE, 6, 1, 0),
Mark Brownd76a9612013-08-13 13:20:15 +010090 SOC_ENUM("MAX9877 Output Mode", max9877_enum[0]),
91 SOC_ENUM("MAX9877 Oscillator Mode", max9877_enum[1]),
Joonyoung Shim9db9ed92009-07-15 20:34:00 +090092};
93
Mark Brown5cf9da82013-08-13 13:32:03 +010094static const struct snd_soc_dapm_widget max9877_dapm_widgets[] = {
95SND_SOC_DAPM_INPUT("INA1"),
96SND_SOC_DAPM_INPUT("INA2"),
97SND_SOC_DAPM_INPUT("INB1"),
98SND_SOC_DAPM_INPUT("INB2"),
99SND_SOC_DAPM_INPUT("RXIN+"),
100SND_SOC_DAPM_INPUT("RXIN-"),
101
102SND_SOC_DAPM_PGA("SHDN", MAX9877_OUTPUT_MODE, 7, 1, NULL, 0),
103
104SND_SOC_DAPM_OUTPUT("OUT+"),
105SND_SOC_DAPM_OUTPUT("OUT-"),
106SND_SOC_DAPM_OUTPUT("HPL"),
107SND_SOC_DAPM_OUTPUT("HPR"),
108};
109
110static const struct snd_soc_dapm_route max9877_dapm_routes[] = {
111 { "SHDN", NULL, "INA1" },
112 { "SHDN", NULL, "INA2" },
113 { "SHDN", NULL, "INB1" },
114 { "SHDN", NULL, "INB2" },
115
116 { "OUT+", NULL, "RXIN+" },
117 { "OUT+", NULL, "SHDN" },
118
119 { "OUT-", NULL, "SHDN" },
120 { "OUT-", NULL, "RXIN-" },
121
122 { "HPL", NULL, "SHDN" },
123 { "HPR", NULL, "SHDN" },
124};
125
Mark Brownd76a9612013-08-13 13:20:15 +0100126static const struct snd_soc_codec_driver max9877_codec = {
127 .controls = max9877_controls,
128 .num_controls = ARRAY_SIZE(max9877_controls),
Mark Brown5cf9da82013-08-13 13:32:03 +0100129
130 .dapm_widgets = max9877_dapm_widgets,
131 .num_dapm_widgets = ARRAY_SIZE(max9877_dapm_widgets),
132 .dapm_routes = max9877_dapm_routes,
133 .num_dapm_routes = ARRAY_SIZE(max9877_dapm_routes),
Mark Brownd76a9612013-08-13 13:20:15 +0100134};
Joonyoung Shim9db9ed92009-07-15 20:34:00 +0900135
Mark Brown997288e2013-08-13 13:10:19 +0100136static const struct regmap_config max9877_regmap = {
137 .reg_bits = 8,
138 .val_bits = 8,
139
140 .reg_defaults = max9877_regs,
141 .num_reg_defaults = ARRAY_SIZE(max9877_regs),
142 .cache_type = REGCACHE_RBTREE,
143};
144
Bill Pemberton7a79e942012-12-07 09:26:37 -0500145static int max9877_i2c_probe(struct i2c_client *client,
146 const struct i2c_device_id *id)
Joonyoung Shim9db9ed92009-07-15 20:34:00 +0900147{
Mark Brown997288e2013-08-13 13:10:19 +0100148 int i;
Joonyoung Shim9db9ed92009-07-15 20:34:00 +0900149
Mark Brown997288e2013-08-13 13:10:19 +0100150 regmap = devm_regmap_init_i2c(client, &max9877_regmap);
151 if (IS_ERR(regmap))
152 return PTR_ERR(regmap);
153
154 /* Ensure the device is in reset state */
155 for (i = 0; i < ARRAY_SIZE(max9877_regs); i++)
156 regmap_write(regmap, max9877_regs[i].reg, max9877_regs[i].def);
Joonyoung Shim9db9ed92009-07-15 20:34:00 +0900157
Mark Brownd76a9612013-08-13 13:20:15 +0100158 return snd_soc_register_codec(&client->dev, &max9877_codec, NULL, 0);
Joonyoung Shim9db9ed92009-07-15 20:34:00 +0900159}
160
Bill Pemberton7a79e942012-12-07 09:26:37 -0500161static int max9877_i2c_remove(struct i2c_client *client)
Joonyoung Shim9db9ed92009-07-15 20:34:00 +0900162{
Mark Brownd76a9612013-08-13 13:20:15 +0100163 snd_soc_unregister_codec(&client->dev);
Joonyoung Shim9db9ed92009-07-15 20:34:00 +0900164
165 return 0;
166}
167
168static const struct i2c_device_id max9877_i2c_id[] = {
169 { "max9877", 0 },
170 { }
171};
172MODULE_DEVICE_TABLE(i2c, max9877_i2c_id);
173
174static struct i2c_driver max9877_i2c_driver = {
175 .driver = {
176 .name = "max9877",
177 .owner = THIS_MODULE,
178 },
179 .probe = max9877_i2c_probe,
Bill Pemberton7a79e942012-12-07 09:26:37 -0500180 .remove = max9877_i2c_remove,
Joonyoung Shim9db9ed92009-07-15 20:34:00 +0900181 .id_table = max9877_i2c_id,
182};
183
Sachin Kamata3627e92012-08-06 17:25:35 +0530184module_i2c_driver(max9877_i2c_driver);
Joonyoung Shim9db9ed92009-07-15 20:34:00 +0900185
186MODULE_DESCRIPTION("ASoC MAX9877 amp driver");
187MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>");
188MODULE_LICENSE("GPL");