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-rw-r--r--sound/soc/codecs/max9877.c308
1 files changed, 308 insertions, 0 deletions
diff --git a/sound/soc/codecs/max9877.c b/sound/soc/codecs/max9877.c
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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
22static struct i2c_client *i2c;
23
24static u8 max9877_regs[5] = { 0x40, 0x00, 0x00, 0x00, 0x49 };
25
26static void max9877_write_regs(void)
27{
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)
36 dev_err(&i2c->dev, "i2c write failed\n");
37}
38
39static 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;
44 unsigned int reg = mc->reg;
45 unsigned int shift = mc->shift;
46 unsigned int mask = mc->max;
47 unsigned int invert = mc->invert;
48
49 ucontrol->value.integer.value[0] = (max9877_regs[reg] >> shift) & mask;
50
51 if (invert)
52 ucontrol->value.integer.value[0] =
53 mask - ucontrol->value.integer.value[0];
54
55 return 0;
56}
57
58static 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;
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
82static 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
98static 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)
112 change = 0;
113
114 if (((max9877_regs[reg2] >> shift) & mask) == val2)
115 change = 0;
116
117 if (change) {
118 max9877_regs[reg] &= ~(mask << shift);
119 max9877_regs[reg] |= val << shift;
120 max9877_regs[reg2] &= ~(mask << shift);
121 max9877_regs[reg2] |= val2 << shift;
122 max9877_write_regs();
123 }
124
125 return change;
126}
127
128static 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
140static 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
145 value += 1;
146
147 if ((max9877_regs[MAX9877_OUTPUT_MODE] & MAX9877_OUTMODE_MASK) == value)
148 return 0;
149
150 max9877_regs[MAX9877_OUTPUT_MODE] &= ~MAX9877_OUTMODE_MASK;
151 max9877_regs[MAX9877_OUTPUT_MODE] |= value;
152 max9877_write_regs();
153 return 1;
154}
155
156static 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
167static 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
176 max9877_regs[MAX9877_OUTPUT_MODE] &= ~MAX9877_OSC_MASK;
177 max9877_regs[MAX9877_OUTPUT_MODE] |= value;
178 max9877_write_regs();
179 return 1;
180}
181
182static 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
188static 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
196static 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
208static const char *max9877_osc_mode[] = {
209 "1176KHz",
210 "1100KHz",
211 "700KHz",
212};
213
214static 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
219static 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,
231 max9877_get_2reg, max9877_set_2reg, max9877_output_tlv),
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 */
254int max9877_add_controls(struct snd_soc_codec *codec)
255{
256 return snd_soc_add_controls(codec, max9877_controls,
257 ARRAY_SIZE(max9877_controls));
258}
259EXPORT_SYMBOL_GPL(max9877_add_controls);
260
261static 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
271static __devexit int max9877_i2c_remove(struct i2c_client *client)
272{
273 i2c = NULL;
274
275 return 0;
276}
277
278static const struct i2c_device_id max9877_i2c_id[] = {
279 { "max9877", 0 },
280 { }
281};
282MODULE_DEVICE_TABLE(i2c, max9877_i2c_id);
283
284static 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
294static int __init max9877_init(void)
295{
296 return i2c_add_driver(&max9877_i2c_driver);
297}
298module_init(max9877_init);
299
300static void __exit max9877_exit(void)
301{
302 i2c_del_driver(&max9877_i2c_driver);
303}
304module_exit(max9877_exit);
305
306MODULE_DESCRIPTION("ASoC MAX9877 amp driver");
307MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>");
308MODULE_LICENSE("GPL");
generated by cgit v1.2.2 (git 2.25.0) at 2025-01-03 03:05:37 -0500