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
|
// SPDX-License-Identifier: GPL-2.0
/*
* tas5825.c - ALSA SoC Texas Instruments TAS5825M Audio Amplifier
*
* Copyright (C) 2020 Aurelien Jarno <aurelien@aurel32.net>
*
* Author: Aurelien Jarno <aurelien@aurel32.net>
*/
#include <linux/module.h>
#include <linux/device.h>
#include <linux/i2c.h>
#include <linux/slab.h>
#include <linux/gpio/consumer.h>
#include <sound/pcm.h>
#include <sound/soc.h>
#include "tas5825m.h"
struct tas5825m_data {
struct gpio_desc *pdn_gpio;
};
static const struct snd_soc_dapm_widget tas5825m_widgets[] = {
SND_SOC_DAPM_OUTPUT("OUT"),
};
static const struct snd_soc_dapm_route tas5825m_routes[] = {
{ "OUT", NULL, "Playback" },
};
static struct snd_soc_component_driver soc_component_dev_tas5825m = {
.dapm_widgets = tas5825m_widgets,
.num_dapm_widgets = ARRAY_SIZE(tas5825m_widgets),
.dapm_routes = tas5825m_routes,
.num_dapm_routes = ARRAY_SIZE(tas5825m_routes),
.idle_bias_on = 1,
.use_pmdown_time = 1,
.endianness = 1,
.non_legacy_dai_naming = 1,
};
static struct snd_soc_dai_driver tas5825m_dai = {
.name = "tas5825m-amplifier",
.playback = {
.stream_name = "Playback",
.channels_min = 2,
.channels_max = 2,
.rates = TAS5825M_RATES,
.formats = TAS5825M_FORMATS,
},
};
#ifdef CONFIG_OF
static const struct of_device_id tas5825m_of_ids[] = {
{ .compatible = "ti,tas5825m", },
{ }
};
MODULE_DEVICE_TABLE(of, tas5825m_of_ids);
#endif
static void tas5825m_write_reg(struct i2c_client *client, uint8_t reg, uint8_t val)
{
uint8_t buf[2];
int ret;
buf[0] = reg;
buf[1] = val;
ret = i2c_master_send(client, buf, sizeof(buf));
if (ret < 0)
dev_err(&client->dev, "unable to write reg 0x%02x, value 0x%02x\n", reg, val);
}
static int tas5825m_i2c_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct device *dev = &client->dev;
struct tas5825m_data *tas5825m;
int ret;
tas5825m = devm_kzalloc(dev, sizeof(*tas5825m), GFP_KERNEL);
if (!tas5825m)
return -ENOMEM;
dev_set_drvdata(dev, tas5825m);
/*
* Get control of the pdn pin and set it LOW to take the codec
* out of the power-down mode.
* Note: The actual pin polarity is taken care of in the GPIO lib
* according the polarity specified in the DTS.
*/
tas5825m->pdn_gpio = devm_gpiod_get_optional(dev, "pdn", GPIOD_OUT_LOW);
if (IS_ERR(tas5825m->pdn_gpio)) {
if (PTR_ERR(tas5825m->pdn_gpio) == -EPROBE_DEFER)
return -EPROBE_DEFER;
dev_info(dev, "failed to get pdn GPIO: %ld\n",
PTR_ERR(tas5825m->pdn_gpio));
tas5825m->pdn_gpio = NULL;
}
/* power-up time may be as long as 1ms */
mdelay(1);
/* PAGE 0x00, BOOK 0x00 */
tas5825m_write_reg(client, 0x00, 0x00);
tas5825m_write_reg(client, 0x7f, 0x00);
/* Reset register and digital core */
tas5825m_write_reg(client, 0x01, 0x11);
tas5825m_write_reg(client, 0x00, 0x00);
tas5825m_write_reg(client, 0x00, 0x00);
tas5825m_write_reg(client, 0x00, 0x00);
tas5825m_write_reg(client, 0x00, 0x00);
tas5825m_write_reg(client, 0x00, 0x00);
tas5825m_write_reg(client, 0x00, 0x00);
tas5825m_write_reg(client, 0x00, 0x00);
/* PAGE 0x00, BOOK 0x00 */
tas5825m_write_reg(client, 0x00, 0x00);
tas5825m_write_reg(client, 0x7f, 0x00);
/* Switch from deep sleep to Hi-z mode, keep mute enabled */
tas5825m_write_reg(client, 0x03, 0x12);
/* GPIO0, GPIO1 and GPIO2 as output */
tas5825m_write_reg(client, 0x60, 0x07);
tas5825m_write_reg(client, 0x61, 0x02);
tas5825m_write_reg(client, 0x62, 0x02);
tas5825m_write_reg(client, 0x63, 0x02);
/* GPIO0 = 1, GPIO1 = 0, GPIO2 = 1 */
// tas5825m_write_reg(client, 0x65, 0x05);
tas5825m_write_reg(client, 0x65, 0x00);
/* ??? */
tas5825m_write_reg(client, 0x7f, 0x00);
tas5825m_write_reg(client, 0x7d, 0x11); /* ???? */
tas5825m_write_reg(client, 0x7e, 0xff); /* ???? */
tas5825m_write_reg(client, 0x00, 0x01); /* Page 0x01 */
tas5825m_write_reg(client, 0x51, 0x05);
tas5825m_write_reg(client, 0x00, 0x02); /* Page 0x02 */
tas5825m_write_reg(client, 0x19, 0xa0);
tas5825m_write_reg(client, 0x1d, 0x01);
tas5825m_write_reg(client, 0x00, 0x00); /* Page 0x00 */
tas5825m_write_reg(client, 0x7f, 0x00); /* Book 0x00 */
tas5825m_write_reg(client, 0x46, 0x01); /* DSP_CTRL */
tas5825m_write_reg(client, 0x00, 0x00);
tas5825m_write_reg(client, 0x02, 0x42); /* # 768kHz, BTL, Hybrid mode */
tas5825m_write_reg(client, 0x53, 0x60); /* # 175kHz bandwidth */
tas5825m_write_reg(client, 0x54, 0x04); /* Analog gain of -2.0dB (originally 0) */
tas5825m_write_reg(client, 0x00, 0x00); /* Page 0x00 */
tas5825m_write_reg(client, 0x7f, 0x00); /* Book 0x00 */
tas5825m_write_reg(client, 0x03, 0x02); /* Hiz, unmute */
mdelay(5);
tas5825m_write_reg(client, 0x00, 0x00);
tas5825m_write_reg(client, 0x00, 0x00);
tas5825m_write_reg(client, 0x00, 0x00);
tas5825m_write_reg(client, 0x00, 0x00);
tas5825m_write_reg(client, 0x7f, 0x8c); /* Book 0x8c */
tas5825m_write_reg(client, 0x00, 0x06); /* Page 0x06 */
tas5825m_write_reg(client, 0x38, 0x00);
tas5825m_write_reg(client, 0x39, 0x00);
tas5825m_write_reg(client, 0x3a, 0x04);
tas5825m_write_reg(client, 0x3b, 0x00);
/* Tuning coeffs */
tas5825m_write_reg(client, 0x00, 0x0b); /* Page 0x0b */
tas5825m_write_reg(client, 0x50, 0x00);
tas5825m_write_reg(client, 0x51, 0x20);
tas5825m_write_reg(client, 0x52, 0xc4);
tas5825m_write_reg(client, 0x53, 0x9c);
tas5825m_write_reg(client, 0x5c, 0x7f);
tas5825m_write_reg(client, 0x5d, 0xff);
tas5825m_write_reg(client, 0x5e, 0xff);
tas5825m_write_reg(client, 0x5f, 0xff);
/* Book 0x8c */
tas5825m_write_reg(client, 0x00, 0x00); /* Page 0x00 */
tas5825m_write_reg(client, 0x7f, 0x8c); /* Book 0x8c */
tas5825m_write_reg(client, 0x00, 0x01); /* Page 0x01 */
tas5825m_write_reg(client, 0x28, 0x40); /* => enable AGL */
tas5825m_write_reg(client, 0x29, 0x00);
tas5825m_write_reg(client, 0x2a, 0x00);
tas5825m_write_reg(client, 0x2b, 0x00);
tas5825m_write_reg(client, 0x00, 0x0a); /* Page 0x0a */
tas5825m_write_reg(client, 0x64, 0x00); /* Digital left from left = 0x00800000 */
tas5825m_write_reg(client, 0x65, 0x80);
tas5825m_write_reg(client, 0x66, 0x00);
tas5825m_write_reg(client, 0x67, 0x00);
tas5825m_write_reg(client, 0x68, 0x00); /* Digital left from right = 0x00000000 */
tas5825m_write_reg(client, 0x69, 0x00);
tas5825m_write_reg(client, 0x6a, 0x00);
tas5825m_write_reg(client, 0x6b, 0x00);
tas5825m_write_reg(client, 0x6c, 0x00); /* Digital right from left = 0x00000000 */
tas5825m_write_reg(client, 0x6d, 0x00);
tas5825m_write_reg(client, 0x6e, 0x00);
tas5825m_write_reg(client, 0x6f, 0x00);
tas5825m_write_reg(client, 0x70, 0x00); /* Digital right from right = 0x008000000 */
tas5825m_write_reg(client, 0x71, 0x80);
tas5825m_write_reg(client, 0x72, 0x00);
tas5825m_write_reg(client, 0x73, 0x00);
tas5825m_write_reg(client, 0x74, 0x00); /* Analog left from left = 0x008000000 */
tas5825m_write_reg(client, 0x75, 0x80);
tas5825m_write_reg(client, 0x76, 0x00);
tas5825m_write_reg(client, 0x77, 0x00);
tas5825m_write_reg(client, 0x78, 0x00); /* Analog left from right = 0x00000000 */
tas5825m_write_reg(client, 0x79, 0x00);
tas5825m_write_reg(client, 0x7a, 0x00);
tas5825m_write_reg(client, 0x7b, 0x00);
tas5825m_write_reg(client, 0x7c, 0x00); /* Analog right from left = 0x00000000 */
tas5825m_write_reg(client, 0x7d, 0x00);
tas5825m_write_reg(client, 0x7e, 0x00);
tas5825m_write_reg(client, 0x7f, 0x00);
tas5825m_write_reg(client, 0x00, 0x0b); /* Page 0x0b */
tas5825m_write_reg(client, 0x08, 0x00); /* Analog right from right = 0x008000000 */
tas5825m_write_reg(client, 0x09, 0x80);
tas5825m_write_reg(client, 0x0a, 0x00);
tas5825m_write_reg(client, 0x0b, 0x00);
tas5825m_write_reg(client, 0x38, 0x02); /* AGL PVDD alpha */
tas5825m_write_reg(client, 0x39, 0xa3);
tas5825m_write_reg(client, 0x3a, 0x9a);
tas5825m_write_reg(client, 0x3b, 0xcc);
tas5825m_write_reg(client, 0x3c, 0x00); /* AGL temp alpha */
tas5825m_write_reg(client, 0x3d, 0x06);
tas5825m_write_reg(client, 0x3e, 0xd3);
tas5825m_write_reg(client, 0x3f, 0x72);
tas5825m_write_reg(client, 0x48, 0x04); /* AGL softening filter */
tas5825m_write_reg(client, 0x49, 0xc1);
tas5825m_write_reg(client, 0x4a, 0xff);
tas5825m_write_reg(client, 0x4b, 0x93);
tas5825m_write_reg(client, 0x4c, 0x01); /* AGL attack rate */
tas5825m_write_reg(client, 0x4d, 0x12);
tas5825m_write_reg(client, 0x4e, 0x6e);
tas5825m_write_reg(client, 0x4f, 0x98);
tas5825m_write_reg(client, 0x54, 0x7b); /* AGL softening filter omega */
tas5825m_write_reg(client, 0x55, 0x3e);
tas5825m_write_reg(client, 0x56, 0x00);
tas5825m_write_reg(client, 0x57, 0x6d);
tas5825m_write_reg(client, 0x58, 0x00); /* AGL release rate */
tas5825m_write_reg(client, 0x59, 0x00);
tas5825m_write_reg(client, 0x5a, 0xae);
tas5825m_write_reg(client, 0x5b, 0xc3);
tas5825m_write_reg(client, 0x60, 0x08); /* AGL PVDD threshold*/
tas5825m_write_reg(client, 0x61, 0x13);
tas5825m_write_reg(client, 0x62, 0x85);
tas5825m_write_reg(client, 0x63, 0x62);
tas5825m_write_reg(client, 0x64, 0x00); /* AGL temp scale */
tas5825m_write_reg(client, 0x65, 0x80);
tas5825m_write_reg(client, 0x66, 0x00);
tas5825m_write_reg(client, 0x67, 0x00);
tas5825m_write_reg(client, 0x6c, 0x00); /* AGL volt scale */
tas5825m_write_reg(client, 0x6d, 0x78);
tas5825m_write_reg(client, 0x6e, 0xd6);
tas5825m_write_reg(client, 0x6f, 0xfd);
tas5825m_write_reg(client, 0x70, 0x00); /* Volt/temp scale */
tas5825m_write_reg(client, 0x71, 0x08);
tas5825m_write_reg(client, 0x72, 0x13);
tas5825m_write_reg(client, 0x73, 0x85);
/* Register Tuning */
tas5825m_write_reg(client, 0x00, 0x00); /* Page 0x00 */
tas5825m_write_reg(client, 0x7f, 0x00); /* Book 0x00 */
tas5825m_write_reg(client, 0x30, 0x00); /* SDOUT is the DSP output */
tas5825m_write_reg(client, 0x4c, 0x30); /* Digital volume 0dB */
tas5825m_write_reg(client, 0x03, 0x03); /* Play mode */
tas5825m_write_reg(client, 0x00, 0x00); /* Page 0x00 */
tas5825m_write_reg(client, 0x7f, 0x00); /* Book 0x00 */
tas5825m_write_reg(client, 0x78, 0x80); /* Clear analog fault */
ret = devm_snd_soc_register_component(dev,
&soc_component_dev_tas5825m,
&tas5825m_dai, 1);
if (ret < 0) {
dev_err(dev, "unable to register codec: %d\n", ret);
return ret;
}
return 0;
}
static int tas5825m_i2c_remove(struct i2c_client *client)
{
struct device *dev = &client->dev;
struct tas5825m_data *tas5825m = dev_get_drvdata(dev);
/* put the codec in power-down */
if (tas5825m->pdn_gpio)
gpiod_set_value_cansleep(tas5825m->pdn_gpio, 1);
return 0;
}
static const struct i2c_device_id tas5825m_i2c_ids[] = {
{ "tas5825m", 0 },
{ }
};
MODULE_DEVICE_TABLE(i2c, tas5825m_i2c_ids);
static struct i2c_driver tas5825m_i2c_driver = {
.driver = {
.name = "tas5825m",
.of_match_table = of_match_ptr(tas5825m_of_ids),
},
.probe = tas5825m_i2c_probe,
.remove = tas5825m_i2c_remove,
.id_table = tas5825m_i2c_ids,
};
module_i2c_driver(tas5825m_i2c_driver);
MODULE_AUTHOR("Aurelien Jarno <aurelien@aurel32.net>");
MODULE_DESCRIPTION("TAS5825M audio amplifier driver");
MODULE_LICENSE("GPL");
|
