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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> |
9db9ed97 JS |
18 | #include <sound/soc.h> |
19 | #include <sound/tlv.h> | |
20 | ||
21 | #include "max9877.h" | |
22 | ||
997288e3 | 23 | static struct regmap *regmap; |
9db9ed97 | 24 | |
997288e3 MB |
25 | static struct reg_default max9877_regs[] = { |
26 | { 0, 0x40 }, | |
27 | { 1, 0x00 }, | |
28 | { 2, 0x00 }, | |
29 | { 3, 0x00 }, | |
30 | { 4, 0x49 }, | |
31 | }; | |
9db9ed97 | 32 | |
9db9ed97 JS |
33 | static 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 | ||
39 | static 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 | ||
47 | static 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 | ||
59 | static const char *max9877_osc_mode[] = { | |
60 | "1176KHz", | |
61 | "1100KHz", | |
62 | "700KHz", | |
63 | }; | |
64 | ||
65 | static const struct soc_enum max9877_enum[] = { | |
d76a9617 MB |
66 | 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), | |
9db9ed97 JS |
70 | }; |
71 | ||
72 | static const struct snd_kcontrol_new max9877_controls[] = { | |
d76a9617 MB |
73 | 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), | |
d76a9617 MB |
90 | SOC_ENUM("MAX9877 Output Mode", max9877_enum[0]), |
91 | SOC_ENUM("MAX9877 Oscillator Mode", max9877_enum[1]), | |
9db9ed97 JS |
92 | }; |
93 | ||
5cf9da8a MB |
94 | static const struct snd_soc_dapm_widget max9877_dapm_widgets[] = { |
95 | SND_SOC_DAPM_INPUT("INA1"), | |
96 | SND_SOC_DAPM_INPUT("INA2"), | |
97 | SND_SOC_DAPM_INPUT("INB1"), | |
98 | SND_SOC_DAPM_INPUT("INB2"), | |
99 | SND_SOC_DAPM_INPUT("RXIN+"), | |
100 | SND_SOC_DAPM_INPUT("RXIN-"), | |
101 | ||
102 | SND_SOC_DAPM_PGA("SHDN", MAX9877_OUTPUT_MODE, 7, 1, NULL, 0), | |
103 | ||
104 | SND_SOC_DAPM_OUTPUT("OUT+"), | |
105 | SND_SOC_DAPM_OUTPUT("OUT-"), | |
106 | SND_SOC_DAPM_OUTPUT("HPL"), | |
107 | SND_SOC_DAPM_OUTPUT("HPR"), | |
108 | }; | |
109 | ||
110 | static 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 | ||
d76a9617 MB |
126 | static const struct snd_soc_codec_driver max9877_codec = { |
127 | .controls = max9877_controls, | |
128 | .num_controls = ARRAY_SIZE(max9877_controls), | |
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129 | |
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), | |
d76a9617 | 134 | }; |
9db9ed97 | 135 | |
997288e3 MB |
136 | static 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 | ||
7a79e94e BP |
145 | static int max9877_i2c_probe(struct i2c_client *client, |
146 | const struct i2c_device_id *id) | |
9db9ed97 | 147 | { |
997288e3 MB |
148 | int i; |
149 | ||
150 | regmap = devm_regmap_init_i2c(client, &max9877_regmap); | |
151 | if (IS_ERR(regmap)) | |
152 | return PTR_ERR(regmap); | |
9db9ed97 | 153 | |
997288e3 MB |
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); | |
9db9ed97 | 157 | |
d76a9617 | 158 | return snd_soc_register_codec(&client->dev, &max9877_codec, NULL, 0); |
9db9ed97 JS |
159 | } |
160 | ||
7a79e94e | 161 | static int max9877_i2c_remove(struct i2c_client *client) |
9db9ed97 | 162 | { |
d76a9617 | 163 | snd_soc_unregister_codec(&client->dev); |
9db9ed97 JS |
164 | |
165 | return 0; | |
166 | } | |
167 | ||
168 | static const struct i2c_device_id max9877_i2c_id[] = { | |
169 | { "max9877", 0 }, | |
170 | { } | |
171 | }; | |
172 | MODULE_DEVICE_TABLE(i2c, max9877_i2c_id); | |
173 | ||
174 | static struct i2c_driver max9877_i2c_driver = { | |
175 | .driver = { | |
176 | .name = "max9877", | |
177 | .owner = THIS_MODULE, | |
178 | }, | |
179 | .probe = max9877_i2c_probe, | |
7a79e94e | 180 | .remove = max9877_i2c_remove, |
9db9ed97 JS |
181 | .id_table = max9877_i2c_id, |
182 | }; | |
183 | ||
a3627e9c | 184 | module_i2c_driver(max9877_i2c_driver); |
9db9ed97 JS |
185 | |
186 | MODULE_DESCRIPTION("ASoC MAX9877 amp driver"); | |
187 | MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>"); | |
188 | MODULE_LICENSE("GPL"); |