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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> | |
17 | #include <sound/soc.h> | |
18 | #include <sound/tlv.h> | |
19 | ||
20 | #include "max9877.h" | |
21 | ||
22 | static struct i2c_client *i2c; | |
23 | ||
24 | static u8 max9877_regs[5] = { 0x40, 0x00, 0x00, 0x00, 0x49 }; | |
25 | ||
26 | static void max9877_write_regs(void) | |
27 | { | |
a7569afa JS |
28 | unsigned int i; |
29 | u8 data[6]; | |
30 | ||
31 | data[0] = MAX9877_INPUT_MODE; | |
32 | for (i = 0; i < ARRAY_SIZE(max9877_regs); i++) | |
33 | data[i + 1] = max9877_regs[i]; | |
34 | ||
35 | if (i2c_master_send(i2c, data, 6) != 6) | |
9db9ed97 JS |
36 | dev_err(&i2c->dev, "i2c write failed\n"); |
37 | } | |
38 | ||
39 | static int max9877_get_reg(struct snd_kcontrol *kcontrol, | |
40 | struct snd_ctl_elem_value *ucontrol) | |
41 | { | |
42 | struct soc_mixer_control *mc = | |
43 | (struct soc_mixer_control *)kcontrol->private_value; | |
e458a48f JS |
44 | unsigned int reg = mc->reg; |
45 | unsigned int shift = mc->shift; | |
46 | unsigned int mask = mc->max; | |
47 | unsigned int invert = mc->invert; | |
9db9ed97 JS |
48 | |
49 | ucontrol->value.integer.value[0] = (max9877_regs[reg] >> shift) & mask; | |
50 | ||
e458a48f JS |
51 | if (invert) |
52 | ucontrol->value.integer.value[0] = | |
53 | mask - ucontrol->value.integer.value[0]; | |
9db9ed97 JS |
54 | |
55 | return 0; | |
56 | } | |
57 | ||
58 | static int max9877_set_reg(struct snd_kcontrol *kcontrol, | |
59 | struct snd_ctl_elem_value *ucontrol) | |
60 | { | |
61 | struct soc_mixer_control *mc = | |
62 | (struct soc_mixer_control *)kcontrol->private_value; | |
e458a48f JS |
63 | unsigned int reg = mc->reg; |
64 | unsigned int shift = mc->shift; | |
65 | unsigned int mask = mc->max; | |
66 | unsigned int invert = mc->invert; | |
67 | unsigned int val = (ucontrol->value.integer.value[0] & mask); | |
68 | ||
69 | if (invert) | |
70 | val = mask - val; | |
71 | ||
72 | if (((max9877_regs[reg] >> shift) & mask) == val) | |
73 | return 0; | |
74 | ||
75 | max9877_regs[reg] &= ~(mask << shift); | |
76 | max9877_regs[reg] |= val << shift; | |
77 | max9877_write_regs(); | |
78 | ||
79 | return 1; | |
80 | } | |
81 | ||
82 | static int max9877_get_2reg(struct snd_kcontrol *kcontrol, | |
83 | struct snd_ctl_elem_value *ucontrol) | |
84 | { | |
85 | struct soc_mixer_control *mc = | |
86 | (struct soc_mixer_control *)kcontrol->private_value; | |
87 | unsigned int reg = mc->reg; | |
88 | unsigned int reg2 = mc->rreg; | |
89 | unsigned int shift = mc->shift; | |
90 | unsigned int mask = mc->max; | |
91 | ||
92 | ucontrol->value.integer.value[0] = (max9877_regs[reg] >> shift) & mask; | |
93 | ucontrol->value.integer.value[1] = (max9877_regs[reg2] >> shift) & mask; | |
94 | ||
95 | return 0; | |
96 | } | |
97 | ||
98 | static int max9877_set_2reg(struct snd_kcontrol *kcontrol, | |
99 | struct snd_ctl_elem_value *ucontrol) | |
100 | { | |
101 | struct soc_mixer_control *mc = | |
102 | (struct soc_mixer_control *)kcontrol->private_value; | |
103 | unsigned int reg = mc->reg; | |
104 | unsigned int reg2 = mc->rreg; | |
105 | unsigned int shift = mc->shift; | |
106 | unsigned int mask = mc->max; | |
107 | unsigned int val = (ucontrol->value.integer.value[0] & mask); | |
108 | unsigned int val2 = (ucontrol->value.integer.value[1] & mask); | |
109 | unsigned int change = 1; | |
110 | ||
111 | if (((max9877_regs[reg] >> shift) & mask) == val) | |
9db9ed97 JS |
112 | change = 0; |
113 | ||
e458a48f JS |
114 | if (((max9877_regs[reg2] >> shift) & mask) == val2) |
115 | change = 0; | |
9db9ed97 JS |
116 | |
117 | if (change) { | |
118 | max9877_regs[reg] &= ~(mask << shift); | |
e458a48f | 119 | max9877_regs[reg] |= val << shift; |
9db9ed97 | 120 | max9877_regs[reg2] &= ~(mask << shift); |
e458a48f | 121 | max9877_regs[reg2] |= val2 << shift; |
9db9ed97 | 122 | max9877_write_regs(); |
e458a48f | 123 | } |
9db9ed97 | 124 | |
e458a48f | 125 | return change; |
9db9ed97 JS |
126 | } |
127 | ||
128 | static int max9877_get_out_mode(struct snd_kcontrol *kcontrol, | |
129 | struct snd_ctl_elem_value *ucontrol) | |
130 | { | |
131 | u8 value = max9877_regs[MAX9877_OUTPUT_MODE] & MAX9877_OUTMODE_MASK; | |
132 | ||
133 | if (value) | |
134 | value -= 1; | |
135 | ||
136 | ucontrol->value.integer.value[0] = value; | |
137 | return 0; | |
138 | } | |
139 | ||
140 | static int max9877_set_out_mode(struct snd_kcontrol *kcontrol, | |
141 | struct snd_ctl_elem_value *ucontrol) | |
142 | { | |
143 | u8 value = ucontrol->value.integer.value[0]; | |
144 | ||
a7569afa | 145 | value += 1; |
9db9ed97 JS |
146 | |
147 | if ((max9877_regs[MAX9877_OUTPUT_MODE] & MAX9877_OUTMODE_MASK) == value) | |
148 | return 0; | |
149 | ||
a7569afa | 150 | max9877_regs[MAX9877_OUTPUT_MODE] &= ~MAX9877_OUTMODE_MASK; |
9db9ed97 JS |
151 | max9877_regs[MAX9877_OUTPUT_MODE] |= value; |
152 | max9877_write_regs(); | |
153 | return 1; | |
154 | } | |
155 | ||
156 | static int max9877_get_osc_mode(struct snd_kcontrol *kcontrol, | |
157 | struct snd_ctl_elem_value *ucontrol) | |
158 | { | |
159 | u8 value = (max9877_regs[MAX9877_OUTPUT_MODE] & MAX9877_OSC_MASK); | |
160 | ||
161 | value = value >> MAX9877_OSC_OFFSET; | |
162 | ||
163 | ucontrol->value.integer.value[0] = value; | |
164 | return 0; | |
165 | } | |
166 | ||
167 | static int max9877_set_osc_mode(struct snd_kcontrol *kcontrol, | |
168 | struct snd_ctl_elem_value *ucontrol) | |
169 | { | |
170 | u8 value = ucontrol->value.integer.value[0]; | |
171 | ||
172 | value = value << MAX9877_OSC_OFFSET; | |
173 | if ((max9877_regs[MAX9877_OUTPUT_MODE] & MAX9877_OSC_MASK) == value) | |
174 | return 0; | |
175 | ||
a7569afa | 176 | max9877_regs[MAX9877_OUTPUT_MODE] &= ~MAX9877_OSC_MASK; |
9db9ed97 JS |
177 | max9877_regs[MAX9877_OUTPUT_MODE] |= value; |
178 | max9877_write_regs(); | |
179 | return 1; | |
180 | } | |
181 | ||
182 | static const unsigned int max9877_pgain_tlv[] = { | |
183 | TLV_DB_RANGE_HEAD(2), | |
184 | 0, 1, TLV_DB_SCALE_ITEM(0, 900, 0), | |
185 | 2, 2, TLV_DB_SCALE_ITEM(2000, 0, 0), | |
186 | }; | |
187 | ||
188 | static const unsigned int max9877_output_tlv[] = { | |
189 | TLV_DB_RANGE_HEAD(4), | |
190 | 0, 7, TLV_DB_SCALE_ITEM(-7900, 400, 1), | |
191 | 8, 15, TLV_DB_SCALE_ITEM(-4700, 300, 0), | |
192 | 16, 23, TLV_DB_SCALE_ITEM(-2300, 200, 0), | |
193 | 24, 31, TLV_DB_SCALE_ITEM(-700, 100, 0), | |
194 | }; | |
195 | ||
196 | static const char *max9877_out_mode[] = { | |
197 | "INA -> SPK", | |
198 | "INA -> HP", | |
199 | "INA -> SPK and HP", | |
200 | "INB -> SPK", | |
201 | "INB -> HP", | |
202 | "INB -> SPK and HP", | |
203 | "INA + INB -> SPK", | |
204 | "INA + INB -> HP", | |
205 | "INA + INB -> SPK and HP", | |
206 | }; | |
207 | ||
208 | static const char *max9877_osc_mode[] = { | |
209 | "1176KHz", | |
210 | "1100KHz", | |
211 | "700KHz", | |
212 | }; | |
213 | ||
214 | static const struct soc_enum max9877_enum[] = { | |
215 | SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(max9877_out_mode), max9877_out_mode), | |
216 | SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(max9877_osc_mode), max9877_osc_mode), | |
217 | }; | |
218 | ||
219 | static const struct snd_kcontrol_new max9877_controls[] = { | |
220 | SOC_SINGLE_EXT_TLV("MAX9877 PGAINA Playback Volume", | |
221 | MAX9877_INPUT_MODE, 0, 2, 0, | |
222 | max9877_get_reg, max9877_set_reg, max9877_pgain_tlv), | |
223 | SOC_SINGLE_EXT_TLV("MAX9877 PGAINB Playback Volume", | |
224 | MAX9877_INPUT_MODE, 2, 2, 0, | |
225 | max9877_get_reg, max9877_set_reg, max9877_pgain_tlv), | |
226 | SOC_SINGLE_EXT_TLV("MAX9877 Amp Speaker Playback Volume", | |
227 | MAX9877_SPK_VOLUME, 0, 31, 0, | |
228 | max9877_get_reg, max9877_set_reg, max9877_output_tlv), | |
229 | SOC_DOUBLE_R_EXT_TLV("MAX9877 Amp HP Playback Volume", | |
230 | MAX9877_HPL_VOLUME, MAX9877_HPR_VOLUME, 0, 31, 0, | |
e458a48f | 231 | max9877_get_2reg, max9877_set_2reg, max9877_output_tlv), |
9db9ed97 JS |
232 | SOC_SINGLE_EXT("MAX9877 INB Stereo Switch", |
233 | MAX9877_INPUT_MODE, 4, 1, 1, | |
234 | max9877_get_reg, max9877_set_reg), | |
235 | SOC_SINGLE_EXT("MAX9877 INA Stereo Switch", | |
236 | MAX9877_INPUT_MODE, 5, 1, 1, | |
237 | max9877_get_reg, max9877_set_reg), | |
238 | SOC_SINGLE_EXT("MAX9877 Zero-crossing detection Switch", | |
239 | MAX9877_INPUT_MODE, 6, 1, 0, | |
240 | max9877_get_reg, max9877_set_reg), | |
241 | SOC_SINGLE_EXT("MAX9877 Bypass Mode Switch", | |
242 | MAX9877_OUTPUT_MODE, 6, 1, 0, | |
243 | max9877_get_reg, max9877_set_reg), | |
244 | SOC_SINGLE_EXT("MAX9877 Shutdown Mode Switch", | |
245 | MAX9877_OUTPUT_MODE, 7, 1, 1, | |
246 | max9877_get_reg, max9877_set_reg), | |
247 | SOC_ENUM_EXT("MAX9877 Output Mode", max9877_enum[0], | |
248 | max9877_get_out_mode, max9877_set_out_mode), | |
249 | SOC_ENUM_EXT("MAX9877 Oscillator Mode", max9877_enum[1], | |
250 | max9877_get_osc_mode, max9877_set_osc_mode), | |
251 | }; | |
252 | ||
253 | /* This function is called from ASoC machine driver */ | |
254 | int max9877_add_controls(struct snd_soc_codec *codec) | |
255 | { | |
256 | return snd_soc_add_controls(codec, max9877_controls, | |
257 | ARRAY_SIZE(max9877_controls)); | |
258 | } | |
259 | EXPORT_SYMBOL_GPL(max9877_add_controls); | |
260 | ||
261 | static int __devinit max9877_i2c_probe(struct i2c_client *client, | |
262 | const struct i2c_device_id *id) | |
263 | { | |
264 | i2c = client; | |
265 | ||
266 | max9877_write_regs(); | |
267 | ||
268 | return 0; | |
269 | } | |
270 | ||
271 | static __devexit int max9877_i2c_remove(struct i2c_client *client) | |
272 | { | |
273 | i2c = NULL; | |
274 | ||
275 | return 0; | |
276 | } | |
277 | ||
278 | static const struct i2c_device_id max9877_i2c_id[] = { | |
279 | { "max9877", 0 }, | |
280 | { } | |
281 | }; | |
282 | MODULE_DEVICE_TABLE(i2c, max9877_i2c_id); | |
283 | ||
284 | static struct i2c_driver max9877_i2c_driver = { | |
285 | .driver = { | |
286 | .name = "max9877", | |
287 | .owner = THIS_MODULE, | |
288 | }, | |
289 | .probe = max9877_i2c_probe, | |
290 | .remove = __devexit_p(max9877_i2c_remove), | |
291 | .id_table = max9877_i2c_id, | |
292 | }; | |
293 | ||
294 | static int __init max9877_init(void) | |
295 | { | |
296 | return i2c_add_driver(&max9877_i2c_driver); | |
297 | } | |
298 | module_init(max9877_init); | |
299 | ||
300 | static void __exit max9877_exit(void) | |
301 | { | |
302 | i2c_del_driver(&max9877_i2c_driver); | |
303 | } | |
304 | module_exit(max9877_exit); | |
305 | ||
306 | MODULE_DESCRIPTION("ASoC MAX9877 amp driver"); | |
307 | MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>"); | |
308 | MODULE_LICENSE("GPL"); |