1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
|
/*
* tfa9879.c -- driver for NXP Semiconductors TFA9879
*
* Copyright (C) 2014 Axentia Technologies AB
* Author: Peter Rosin <peda@axentia.se>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*
*/
#include <linux/module.h>
#include <linux/init.h>
#include <linux/i2c.h>
#include <linux/regmap.h>
#include <sound/soc.h>
#include <sound/tlv.h>
#include <sound/pcm_params.h>
#include "tfa9879.h"
struct tfa9879_priv {
struct regmap *regmap;
int lsb_justified;
};
static int tfa9879_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params,
struct snd_soc_dai *dai)
{
struct snd_soc_codec *codec = dai->codec;
struct tfa9879_priv *tfa9879 = snd_soc_codec_get_drvdata(codec);
int fs;
int i2s_set = 0;
switch (params_rate(params)) {
case 8000:
fs = TFA9879_I2S_FS_8000;
break;
case 11025:
fs = TFA9879_I2S_FS_11025;
break;
case 12000:
fs = TFA9879_I2S_FS_12000;
break;
case 16000:
fs = TFA9879_I2S_FS_16000;
break;
case 22050:
fs = TFA9879_I2S_FS_22050;
break;
case 24000:
fs = TFA9879_I2S_FS_24000;
break;
case 32000:
fs = TFA9879_I2S_FS_32000;
break;
case 44100:
fs = TFA9879_I2S_FS_44100;
break;
case 48000:
fs = TFA9879_I2S_FS_48000;
break;
case 64000:
fs = TFA9879_I2S_FS_64000;
break;
case 88200:
fs = TFA9879_I2S_FS_88200;
break;
case 96000:
fs = TFA9879_I2S_FS_96000;
break;
default:
return -EINVAL;
}
switch (params_width(params)) {
case 16:
i2s_set = TFA9879_I2S_SET_LSB_J_16;
break;
case 24:
i2s_set = TFA9879_I2S_SET_LSB_J_24;
break;
default:
return -EINVAL;
}
if (tfa9879->lsb_justified)
snd_soc_update_bits(codec, TFA9879_SERIAL_INTERFACE_1,
TFA9879_I2S_SET_MASK,
i2s_set << TFA9879_I2S_SET_SHIFT);
snd_soc_update_bits(codec, TFA9879_SERIAL_INTERFACE_1,
TFA9879_I2S_FS_MASK,
fs << TFA9879_I2S_FS_SHIFT);
return 0;
}
static int tfa9879_digital_mute(struct snd_soc_dai *dai, int mute)
{
struct snd_soc_codec *codec = dai->codec;
snd_soc_update_bits(codec, TFA9879_MISC_CONTROL,
TFA9879_S_MUTE_MASK,
!!mute << TFA9879_S_MUTE_SHIFT);
return 0;
}
static int tfa9879_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
{
struct snd_soc_codec *codec = dai->codec;
struct tfa9879_priv *tfa9879 = snd_soc_codec_get_drvdata(codec);
int i2s_set;
int sck_pol;
switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
case SND_SOC_DAIFMT_CBS_CFS:
break;
default:
return -EINVAL;
}
switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
case SND_SOC_DAIFMT_NB_NF:
sck_pol = TFA9879_SCK_POL_NORMAL;
break;
case SND_SOC_DAIFMT_IB_NF:
sck_pol = TFA9879_SCK_POL_INVERSE;
break;
default:
return -EINVAL;
}
switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
case SND_SOC_DAIFMT_I2S:
tfa9879->lsb_justified = 0;
i2s_set = TFA9879_I2S_SET_I2S_24;
break;
case SND_SOC_DAIFMT_LEFT_J:
tfa9879->lsb_justified = 0;
i2s_set = TFA9879_I2S_SET_MSB_J_24;
break;
case SND_SOC_DAIFMT_RIGHT_J:
tfa9879->lsb_justified = 1;
i2s_set = TFA9879_I2S_SET_LSB_J_24;
break;
default:
return -EINVAL;
}
snd_soc_update_bits(codec, TFA9879_SERIAL_INTERFACE_1,
TFA9879_SCK_POL_MASK,
sck_pol << TFA9879_SCK_POL_SHIFT);
snd_soc_update_bits(codec, TFA9879_SERIAL_INTERFACE_1,
TFA9879_I2S_SET_MASK,
i2s_set << TFA9879_I2S_SET_SHIFT);
return 0;
}
static struct reg_default tfa9879_regs[] = {
{ TFA9879_DEVICE_CONTROL, 0x0000 }, /* 0x00 */
{ TFA9879_SERIAL_INTERFACE_1, 0x0a18 }, /* 0x01 */
{ TFA9879_PCM_IOM2_FORMAT_1, 0x0007 }, /* 0x02 */
{ TFA9879_SERIAL_INTERFACE_2, 0x0a18 }, /* 0x03 */
{ TFA9879_PCM_IOM2_FORMAT_2, 0x0007 }, /* 0x04 */
{ TFA9879_EQUALIZER_A1, 0x59dd }, /* 0x05 */
{ TFA9879_EQUALIZER_A2, 0xc63e }, /* 0x06 */
{ TFA9879_EQUALIZER_B1, 0x651a }, /* 0x07 */
{ TFA9879_EQUALIZER_B2, 0xe53e }, /* 0x08 */
{ TFA9879_EQUALIZER_C1, 0x4616 }, /* 0x09 */
{ TFA9879_EQUALIZER_C2, 0xd33e }, /* 0x0a */
{ TFA9879_EQUALIZER_D1, 0x4df3 }, /* 0x0b */
{ TFA9879_EQUALIZER_D2, 0xea3e }, /* 0x0c */
{ TFA9879_EQUALIZER_E1, 0x5ee0 }, /* 0x0d */
{ TFA9879_EQUALIZER_E2, 0xf93e }, /* 0x0e */
{ TFA9879_BYPASS_CONTROL, 0x0093 }, /* 0x0f */
{ TFA9879_DYNAMIC_RANGE_COMPR, 0x92ba }, /* 0x10 */
{ TFA9879_BASS_TREBLE, 0x12a5 }, /* 0x11 */
{ TFA9879_HIGH_PASS_FILTER, 0x0004 }, /* 0x12 */
{ TFA9879_VOLUME_CONTROL, 0x10bd }, /* 0x13 */
{ TFA9879_MISC_CONTROL, 0x0000 }, /* 0x14 */
};
static bool tfa9879_volatile_reg(struct device *dev, unsigned int reg)
{
return reg == TFA9879_MISC_STATUS;
}
static const DECLARE_TLV_DB_SCALE(volume_tlv, -7050, 50, 1);
static const DECLARE_TLV_DB_SCALE(tb_gain_tlv, -1800, 200, 0);
static const char * const tb_freq_text[] = {
"Low", "Mid", "High"
};
static const struct soc_enum treble_freq_enum =
SOC_ENUM_SINGLE(TFA9879_BASS_TREBLE, TFA9879_F_TRBLE_SHIFT,
ARRAY_SIZE(tb_freq_text), tb_freq_text);
static const struct soc_enum bass_freq_enum =
SOC_ENUM_SINGLE(TFA9879_BASS_TREBLE, TFA9879_F_BASS_SHIFT,
ARRAY_SIZE(tb_freq_text), tb_freq_text);
static const struct snd_kcontrol_new tfa9879_controls[] = {
SOC_SINGLE_TLV("PCM Playback Volume", TFA9879_VOLUME_CONTROL,
TFA9879_VOL_SHIFT, 0xbd, 1, volume_tlv),
SOC_SINGLE_TLV("Treble Volume", TFA9879_BASS_TREBLE,
TFA9879_G_TRBLE_SHIFT, 18, 0, tb_gain_tlv),
SOC_SINGLE_TLV("Bass Volume", TFA9879_BASS_TREBLE,
TFA9879_G_BASS_SHIFT, 18, 0, tb_gain_tlv),
SOC_ENUM("Treble Corner Freq", treble_freq_enum),
SOC_ENUM("Bass Corner Freq", bass_freq_enum),
};
static const struct snd_soc_dapm_widget tfa9879_dapm_widgets[] = {
SND_SOC_DAPM_AIF_IN("AIFINL", "Playback", 0, SND_SOC_NOPM, 0, 0),
SND_SOC_DAPM_AIF_IN("AIFINR", "Playback", 1, SND_SOC_NOPM, 0, 0),
SND_SOC_DAPM_DAC("DAC", NULL, TFA9879_DEVICE_CONTROL, TFA9879_OPMODE_SHIFT, 0),
SND_SOC_DAPM_OUTPUT("LINEOUT"),
SND_SOC_DAPM_SUPPLY("POWER", TFA9879_DEVICE_CONTROL, TFA9879_POWERUP_SHIFT, 0,
NULL, 0),
};
static const struct snd_soc_dapm_route tfa9879_dapm_routes[] = {
{ "DAC", NULL, "AIFINL" },
{ "DAC", NULL, "AIFINR" },
{ "LINEOUT", NULL, "DAC" },
{ "DAC", NULL, "POWER" },
};
static const struct snd_soc_codec_driver tfa9879_codec = {
.controls = tfa9879_controls,
.num_controls = ARRAY_SIZE(tfa9879_controls),
.dapm_widgets = tfa9879_dapm_widgets,
.num_dapm_widgets = ARRAY_SIZE(tfa9879_dapm_widgets),
.dapm_routes = tfa9879_dapm_routes,
.num_dapm_routes = ARRAY_SIZE(tfa9879_dapm_routes),
};
static const struct regmap_config tfa9879_regmap = {
.reg_bits = 8,
.val_bits = 16,
.volatile_reg = tfa9879_volatile_reg,
.max_register = TFA9879_MISC_STATUS,
.reg_defaults = tfa9879_regs,
.num_reg_defaults = ARRAY_SIZE(tfa9879_regs),
.cache_type = REGCACHE_RBTREE,
};
static const struct snd_soc_dai_ops tfa9879_dai_ops = {
.hw_params = tfa9879_hw_params,
.digital_mute = tfa9879_digital_mute,
.set_fmt = tfa9879_set_fmt,
};
#define TFA9879_RATES SNDRV_PCM_RATE_8000_96000
#define TFA9879_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | \
SNDRV_PCM_FMTBIT_S24_LE)
static struct snd_soc_dai_driver tfa9879_dai = {
.name = "tfa9879-hifi",
.playback = {
.stream_name = "Playback",
.channels_min = 2,
.channels_max = 2,
.rates = TFA9879_RATES,
.formats = TFA9879_FORMATS, },
.ops = &tfa9879_dai_ops,
};
static int tfa9879_i2c_probe(struct i2c_client *i2c,
const struct i2c_device_id *id)
{
struct tfa9879_priv *tfa9879;
int i;
tfa9879 = devm_kzalloc(&i2c->dev, sizeof(*tfa9879), GFP_KERNEL);
if (IS_ERR(tfa9879))
return PTR_ERR(tfa9879);
i2c_set_clientdata(i2c, tfa9879);
tfa9879->regmap = devm_regmap_init_i2c(i2c, &tfa9879_regmap);
if (IS_ERR(tfa9879->regmap))
return PTR_ERR(tfa9879->regmap);
/* Ensure the device is in reset state */
for (i = 0; i < ARRAY_SIZE(tfa9879_regs); i++)
regmap_write(tfa9879->regmap,
tfa9879_regs[i].reg, tfa9879_regs[i].def);
return snd_soc_register_codec(&i2c->dev, &tfa9879_codec,
&tfa9879_dai, 1);
}
static int tfa9879_i2c_remove(struct i2c_client *client)
{
snd_soc_unregister_codec(&client->dev);
return 0;
}
static const struct i2c_device_id tfa9879_i2c_id[] = {
{ "tfa9879", 0 },
{ }
};
MODULE_DEVICE_TABLE(i2c, tfa9879_i2c_id);
static struct i2c_driver tfa9879_i2c_driver = {
.driver = {
.name = "tfa9879",
.owner = THIS_MODULE,
},
.probe = tfa9879_i2c_probe,
.remove = tfa9879_i2c_remove,
.id_table = tfa9879_i2c_id,
};
module_i2c_driver(tfa9879_i2c_driver);
MODULE_DESCRIPTION("ASoC NXP Semiconductors TFA9879 driver");
MODULE_AUTHOR("Peter Rosin <peda@axentia.se>");
MODULE_LICENSE("GPL");
|
