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1 | /* |
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> | |
997288e3 | 17 | #include <linux/regmap.h> |
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18 | #include <sound/soc.h> |
19 | #include <sound/tlv.h> | |
20 | ||
21 | #include "max9877.h" | |
22 | ||
c418a84a | 23 | static const struct reg_default max9877_regs[] = { |
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24 | { 0, 0x40 }, |
25 | { 1, 0x00 }, | |
26 | { 2, 0x00 }, | |
27 | { 3, 0x00 }, | |
28 | { 4, 0x49 }, | |
29 | }; | |
9db9ed97 | 30 | |
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31 | static const unsigned int max9877_pgain_tlv[] = { |
32 | TLV_DB_RANGE_HEAD(2), | |
33 | 0, 1, TLV_DB_SCALE_ITEM(0, 900, 0), | |
34 | 2, 2, TLV_DB_SCALE_ITEM(2000, 0, 0), | |
35 | }; | |
36 | ||
37 | static const unsigned int max9877_output_tlv[] = { | |
38 | TLV_DB_RANGE_HEAD(4), | |
39 | 0, 7, TLV_DB_SCALE_ITEM(-7900, 400, 1), | |
40 | 8, 15, TLV_DB_SCALE_ITEM(-4700, 300, 0), | |
41 | 16, 23, TLV_DB_SCALE_ITEM(-2300, 200, 0), | |
42 | 24, 31, TLV_DB_SCALE_ITEM(-700, 100, 0), | |
43 | }; | |
44 | ||
45 | static const char *max9877_out_mode[] = { | |
46 | "INA -> SPK", | |
47 | "INA -> HP", | |
48 | "INA -> SPK and HP", | |
49 | "INB -> SPK", | |
50 | "INB -> HP", | |
51 | "INB -> SPK and HP", | |
52 | "INA + INB -> SPK", | |
53 | "INA + INB -> HP", | |
54 | "INA + INB -> SPK and HP", | |
55 | }; | |
56 | ||
57 | static const char *max9877_osc_mode[] = { | |
58 | "1176KHz", | |
59 | "1100KHz", | |
60 | "700KHz", | |
61 | }; | |
62 | ||
63 | static const struct soc_enum max9877_enum[] = { | |
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64 | SOC_ENUM_SINGLE(MAX9877_OUTPUT_MODE, 0, ARRAY_SIZE(max9877_out_mode), |
65 | max9877_out_mode), | |
66 | SOC_ENUM_SINGLE(MAX9877_OUTPUT_MODE, MAX9877_OSC_OFFSET, | |
67 | ARRAY_SIZE(max9877_osc_mode), max9877_osc_mode), | |
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68 | }; |
69 | ||
70 | static const struct snd_kcontrol_new max9877_controls[] = { | |
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71 | SOC_SINGLE_TLV("MAX9877 PGAINA Playback Volume", |
72 | MAX9877_INPUT_MODE, 0, 2, 0, max9877_pgain_tlv), | |
73 | SOC_SINGLE_TLV("MAX9877 PGAINB Playback Volume", | |
74 | MAX9877_INPUT_MODE, 2, 2, 0, max9877_pgain_tlv), | |
75 | SOC_SINGLE_TLV("MAX9877 Amp Speaker Playback Volume", | |
76 | MAX9877_SPK_VOLUME, 0, 31, 0, max9877_output_tlv), | |
77 | SOC_DOUBLE_R_TLV("MAX9877 Amp HP Playback Volume", | |
78 | MAX9877_HPL_VOLUME, MAX9877_HPR_VOLUME, 0, 31, 0, | |
79 | max9877_output_tlv), | |
80 | SOC_SINGLE("MAX9877 INB Stereo Switch", | |
81 | MAX9877_INPUT_MODE, 4, 1, 1), | |
82 | SOC_SINGLE("MAX9877 INA Stereo Switch", | |
83 | MAX9877_INPUT_MODE, 5, 1, 1), | |
84 | SOC_SINGLE("MAX9877 Zero-crossing detection Switch", | |
85 | MAX9877_INPUT_MODE, 6, 1, 0), | |
86 | SOC_SINGLE("MAX9877 Bypass Mode Switch", | |
87 | MAX9877_OUTPUT_MODE, 6, 1, 0), | |
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88 | SOC_ENUM("MAX9877 Output Mode", max9877_enum[0]), |
89 | SOC_ENUM("MAX9877 Oscillator Mode", max9877_enum[1]), | |
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90 | }; |
91 | ||
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92 | static const struct snd_soc_dapm_widget max9877_dapm_widgets[] = { |
93 | SND_SOC_DAPM_INPUT("INA1"), | |
94 | SND_SOC_DAPM_INPUT("INA2"), | |
95 | SND_SOC_DAPM_INPUT("INB1"), | |
96 | SND_SOC_DAPM_INPUT("INB2"), | |
97 | SND_SOC_DAPM_INPUT("RXIN+"), | |
98 | SND_SOC_DAPM_INPUT("RXIN-"), | |
99 | ||
100 | SND_SOC_DAPM_PGA("SHDN", MAX9877_OUTPUT_MODE, 7, 1, NULL, 0), | |
101 | ||
102 | SND_SOC_DAPM_OUTPUT("OUT+"), | |
103 | SND_SOC_DAPM_OUTPUT("OUT-"), | |
104 | SND_SOC_DAPM_OUTPUT("HPL"), | |
105 | SND_SOC_DAPM_OUTPUT("HPR"), | |
106 | }; | |
107 | ||
108 | static const struct snd_soc_dapm_route max9877_dapm_routes[] = { | |
109 | { "SHDN", NULL, "INA1" }, | |
110 | { "SHDN", NULL, "INA2" }, | |
111 | { "SHDN", NULL, "INB1" }, | |
112 | { "SHDN", NULL, "INB2" }, | |
113 | ||
114 | { "OUT+", NULL, "RXIN+" }, | |
115 | { "OUT+", NULL, "SHDN" }, | |
116 | ||
117 | { "OUT-", NULL, "SHDN" }, | |
118 | { "OUT-", NULL, "RXIN-" }, | |
119 | ||
120 | { "HPL", NULL, "SHDN" }, | |
121 | { "HPR", NULL, "SHDN" }, | |
122 | }; | |
123 | ||
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124 | static const struct snd_soc_codec_driver max9877_codec = { |
125 | .controls = max9877_controls, | |
126 | .num_controls = ARRAY_SIZE(max9877_controls), | |
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127 | |
128 | .dapm_widgets = max9877_dapm_widgets, | |
129 | .num_dapm_widgets = ARRAY_SIZE(max9877_dapm_widgets), | |
130 | .dapm_routes = max9877_dapm_routes, | |
131 | .num_dapm_routes = ARRAY_SIZE(max9877_dapm_routes), | |
d76a9617 | 132 | }; |
9db9ed97 | 133 | |
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134 | static const struct regmap_config max9877_regmap = { |
135 | .reg_bits = 8, | |
136 | .val_bits = 8, | |
137 | ||
138 | .reg_defaults = max9877_regs, | |
139 | .num_reg_defaults = ARRAY_SIZE(max9877_regs), | |
140 | .cache_type = REGCACHE_RBTREE, | |
141 | }; | |
142 | ||
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143 | static int max9877_i2c_probe(struct i2c_client *client, |
144 | const struct i2c_device_id *id) | |
9db9ed97 | 145 | { |
df2e2682 | 146 | struct regmap *regmap; |
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147 | int i; |
148 | ||
149 | regmap = devm_regmap_init_i2c(client, &max9877_regmap); | |
150 | if (IS_ERR(regmap)) | |
151 | return PTR_ERR(regmap); | |
9db9ed97 | 152 | |
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153 | /* Ensure the device is in reset state */ |
154 | for (i = 0; i < ARRAY_SIZE(max9877_regs); i++) | |
155 | regmap_write(regmap, max9877_regs[i].reg, max9877_regs[i].def); | |
9db9ed97 | 156 | |
d76a9617 | 157 | return snd_soc_register_codec(&client->dev, &max9877_codec, NULL, 0); |
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158 | } |
159 | ||
7a79e94e | 160 | static int max9877_i2c_remove(struct i2c_client *client) |
9db9ed97 | 161 | { |
d76a9617 | 162 | snd_soc_unregister_codec(&client->dev); |
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163 | |
164 | return 0; | |
165 | } | |
166 | ||
167 | static const struct i2c_device_id max9877_i2c_id[] = { | |
168 | { "max9877", 0 }, | |
169 | { } | |
170 | }; | |
171 | MODULE_DEVICE_TABLE(i2c, max9877_i2c_id); | |
172 | ||
173 | static struct i2c_driver max9877_i2c_driver = { | |
174 | .driver = { | |
175 | .name = "max9877", | |
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176 | }, |
177 | .probe = max9877_i2c_probe, | |
7a79e94e | 178 | .remove = max9877_i2c_remove, |
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179 | .id_table = max9877_i2c_id, |
180 | }; | |
181 | ||
a3627e9c | 182 | module_i2c_driver(max9877_i2c_driver); |
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183 | |
184 | MODULE_DESCRIPTION("ASoC MAX9877 amp driver"); | |
185 | MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>"); | |
186 | MODULE_LICENSE("GPL"); |