summaryrefslogtreecommitdiffstats
path: root/sound/soc/codecs/mt6660.c
blob: d1797003c83dda96c60342da78473984816b8954 (plain)
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
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
// SPDX-License-Identifier: GPL-2.0

// Copyright (c) 2019 MediaTek Inc.

#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/err.h>
#include <linux/i2c.h>
#include <linux/pm_runtime.h>
#include <linux/delay.h>
#include <sound/soc.h>
#include <sound/tlv.h>
#include <sound/pcm_params.h>

#include "mt6660.h"

struct reg_size_table {
	u32 addr;
	u8 size;
};

static const struct reg_size_table mt6660_reg_size_table[] = {
	{ MT6660_REG_HPF1_COEF, 4 },
	{ MT6660_REG_HPF2_COEF, 4 },
	{ MT6660_REG_TDM_CFG3, 2 },
	{ MT6660_REG_RESV17, 2 },
	{ MT6660_REG_RESV23, 2 },
	{ MT6660_REG_SIGMAX, 2 },
	{ MT6660_REG_DEVID, 2 },
	{ MT6660_REG_HCLIP_CTRL, 2 },
	{ MT6660_REG_DA_GAIN, 2 },
};

static int mt6660_get_reg_size(uint32_t addr)
{
	int i;

	for (i = 0; i < ARRAY_SIZE(mt6660_reg_size_table); i++) {
		if (mt6660_reg_size_table[i].addr == addr)
			return mt6660_reg_size_table[i].size;
	}
	return 1;
}

static int mt6660_reg_write(void *context, unsigned int reg, unsigned int val)
{
	struct mt6660_chip *chip = context;
	int size = mt6660_get_reg_size(reg);
	u8 reg_data[4];
	int i, ret;

	for (i = 0; i < size; i++)
		reg_data[size - i - 1] = (val >> (8 * i)) & 0xff;

	ret = i2c_smbus_write_i2c_block_data(chip->i2c, reg, size, reg_data);
	return ret;
}

static int mt6660_reg_read(void *context, unsigned int reg, unsigned int *val)
{
	struct mt6660_chip *chip = context;
	int size = mt6660_get_reg_size(reg);
	int i, ret;
	u8 data[4];
	u32 reg_data = 0;

	ret = i2c_smbus_read_i2c_block_data(chip->i2c, reg, size, data);
	if (ret < 0)
		return ret;
	for (i = 0; i < size; i++) {
		reg_data <<= 8;
		reg_data |= data[i];
	}
	*val = reg_data;
	return 0;
}

static const struct regmap_config mt6660_regmap_config = {
	.reg_bits = 8,
	.val_bits = 32,
	.reg_write = mt6660_reg_write,
	.reg_read = mt6660_reg_read,
};

static int mt6660_codec_dac_event(struct snd_soc_dapm_widget *w,
	struct snd_kcontrol *kcontrol, int event)
{
	if (event == SND_SOC_DAPM_POST_PMU)
		usleep_range(1000, 1100);
	return 0;
}

static int mt6660_codec_classd_event(struct snd_soc_dapm_widget *w,
	struct snd_kcontrol *kcontrol, int event)
{
	struct snd_soc_component *component =
		snd_soc_dapm_to_component(w->dapm);
	int ret;

	switch (event) {
	case SND_SOC_DAPM_PRE_PMU:
		dev_dbg(component->dev,
			"%s: before classd turn on\n", __func__);
		/* config to adaptive mode */
		ret = snd_soc_component_update_bits(component,
			MT6660_REG_BST_CTRL, 0x03, 0x03);
		if (ret < 0) {
			dev_err(component->dev, "config mode adaptive fail\n");
			return ret;
		}
		break;
	case SND_SOC_DAPM_POST_PMU:
		/* voltage sensing enable */
		ret = snd_soc_component_update_bits(component,
			MT6660_REG_RESV7, 0x04, 0x04);
		if (ret < 0) {
			dev_err(component->dev,
				"enable voltage sensing fail\n");
			return ret;
		}
		dev_dbg(component->dev, "Amp on\n");
		break;
	case SND_SOC_DAPM_PRE_PMD:
		dev_dbg(component->dev, "Amp off\n");
		/* voltage sensing disable */
		ret = snd_soc_component_update_bits(component,
			MT6660_REG_RESV7, 0x04, 0x00);
		if (ret < 0) {
			dev_err(component->dev,
				"disable voltage sensing fail\n");
			return ret;
		}
		/* pop-noise improvement 1 */
		ret = snd_soc_component_update_bits(component,
			MT6660_REG_RESV10, 0x10, 0x10);
		if (ret < 0) {
			dev_err(component->dev,
				"pop-noise improvement 1 fail\n");
			return ret;
		}
		break;
	case SND_SOC_DAPM_POST_PMD:
		dev_dbg(component->dev,
			"%s: after classd turn off\n", __func__);
		/* pop-noise improvement 2 */
		ret = snd_soc_component_update_bits(component,
			MT6660_REG_RESV10, 0x10, 0x00);
		if (ret < 0) {
			dev_err(component->dev,
				"pop-noise improvement 2 fail\n");
			return ret;
		}
		/* config to off mode */
		ret = snd_soc_component_update_bits(component,
			MT6660_REG_BST_CTRL, 0x03, 0x00);
		if (ret < 0) {
			dev_err(component->dev, "config mode off fail\n");
			return ret;
		}
		break;
	}
	return 0;
}

static const struct snd_soc_dapm_widget mt6660_component_dapm_widgets[] = {
	SND_SOC_DAPM_DAC_E("DAC", NULL, MT6660_REG_PLL_CFG1,
		0, 1, mt6660_codec_dac_event, SND_SOC_DAPM_POST_PMU),
	SND_SOC_DAPM_ADC("VI ADC", NULL, SND_SOC_NOPM, 0, 0),
	SND_SOC_DAPM_PGA("PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
	SND_SOC_DAPM_OUT_DRV_E("ClassD", MT6660_REG_SYSTEM_CTRL, 2, 0,
			       NULL, 0, mt6660_codec_classd_event,
			       SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMU |
			       SND_SOC_DAPM_PRE_PMD | SND_SOC_DAPM_POST_PMD),
	SND_SOC_DAPM_OUTPUT("OUTP"),
	SND_SOC_DAPM_OUTPUT("OUTN"),
};

static const struct snd_soc_dapm_route mt6660_component_dapm_routes[] = {
	{ "DAC", NULL, "aif_playback" },
	{ "PGA", NULL, "DAC" },
	{ "ClassD", NULL, "PGA" },
	{ "OUTP", NULL, "ClassD" },
	{ "OUTN", NULL, "ClassD" },
	{ "VI ADC", NULL, "ClassD" },
	{ "aif_capture", NULL, "VI ADC" },
};

static int mt6660_component_get_volsw(struct snd_kcontrol *kcontrol,
				  struct snd_ctl_elem_value *ucontrol)
{
	struct snd_soc_component *component =
		snd_soc_kcontrol_component(kcontrol);
	struct mt6660_chip *chip = (struct mt6660_chip *)
		snd_soc_component_get_drvdata(component);

	ucontrol->value.integer.value[0] = chip->chip_rev & 0x0f;
	return 0;
}

static const DECLARE_TLV_DB_SCALE(vol_ctl_tlv, -1155, 5, 0);

static const struct snd_kcontrol_new mt6660_component_snd_controls[] = {
	SOC_SINGLE_TLV("Digital Volume", MT6660_REG_VOL_CTRL, 0, 255,
			   1, vol_ctl_tlv),
	SOC_SINGLE("Hard Clip Switch", MT6660_REG_HCLIP_CTRL, 8, 1, 0),
	SOC_SINGLE("Clip Switch", MT6660_REG_SPS_CTRL, 0, 1, 0),
	SOC_SINGLE("Boost Mode", MT6660_REG_BST_CTRL, 0, 3, 0),
	SOC_SINGLE("DRE Switch", MT6660_REG_DRE_CTRL, 0, 1, 0),
	SOC_SINGLE("DC Protect Switch",	MT6660_REG_DC_PROTECT_CTRL, 3, 1, 0),
	SOC_SINGLE("Data Output Left Channel Selection",
		   MT6660_REG_DATAO_SEL, 3, 7, 0),
	SOC_SINGLE("Data Output Right Channel Selection",
		   MT6660_REG_DATAO_SEL, 0, 7, 0),
	SOC_SINGLE_EXT("T0 SEL", MT6660_REG_CALI_T0, 0, 7, 0,
		       snd_soc_get_volsw, NULL),
	SOC_SINGLE_EXT("Chip Rev", MT6660_REG_DEVID, 8, 15, 0,
		       mt6660_component_get_volsw, NULL),
};

static int _mt6660_chip_power_on(struct mt6660_chip *chip, int on_off)
{
	return regmap_write_bits(chip->regmap, MT6660_REG_SYSTEM_CTRL,
				 0x01, on_off ? 0x00 : 0x01);
}

struct reg_table {
	uint32_t addr;
	uint32_t mask;
	uint32_t val;
};

static const struct reg_table mt6660_setting_table[] = {
	{ 0x20, 0x80, 0x00 },
	{ 0x30, 0x01, 0x00 },
	{ 0x50, 0x1c, 0x04 },
	{ 0xB1, 0x0c, 0x00 },
	{ 0xD3, 0x03, 0x03 },
	{ 0xE0, 0x01, 0x00 },
	{ 0x98, 0x44, 0x04 },
	{ 0xB9, 0xff, 0x82 },
	{ 0xB7, 0x7777, 0x7273 },
	{ 0xB6, 0x07, 0x03 },
	{ 0x6B, 0xe0, 0x20 },
	{ 0x07, 0xff, 0x70 },
	{ 0xBB, 0xff, 0x20 },
	{ 0x69, 0xff, 0x40 },
	{ 0xBD, 0xffff, 0x17f8 },
	{ 0x70, 0xff, 0x15 },
	{ 0x7C, 0xff, 0x00 },
	{ 0x46, 0xff, 0x1d },
	{ 0x1A, 0xffffffff, 0x7fdb7ffe },
	{ 0x1B, 0xffffffff, 0x7fdb7ffe },
	{ 0x51, 0xff, 0x58 },
	{ 0xA2, 0xff, 0xce },
	{ 0x33, 0xffff, 0x7fff },
	{ 0x4C, 0xffff, 0x0116 },
	{ 0x16, 0x1800, 0x0800 },
	{ 0x68, 0x1f, 0x07 },
};

static int mt6660_component_setting(struct snd_soc_component *component)
{
	struct mt6660_chip *chip = snd_soc_component_get_drvdata(component);
	int ret = 0;
	size_t i = 0;

	ret = _mt6660_chip_power_on(chip, 1);
	if (ret < 0) {
		dev_err(component->dev, "%s chip power on failed\n", __func__);
		return ret;
	}

	for (i = 0; i < ARRAY_SIZE(mt6660_setting_table); i++) {
		ret = snd_soc_component_update_bits(component,
				mt6660_setting_table[i].addr,
				mt6660_setting_table[i].mask,
				mt6660_setting_table[i].val);
		if (ret < 0) {
			dev_err(component->dev, "%s update 0x%02x failed\n",
				__func__, mt6660_setting_table[i].addr);
			return ret;
		}
	}

	ret = _mt6660_chip_power_on(chip, 0);
	if (ret < 0) {
		dev_err(component->dev, "%s chip power off failed\n", __func__);
		return ret;
	}

	return 0;
}

static int mt6660_component_probe(struct snd_soc_component *component)
{
	struct mt6660_chip *chip = snd_soc_component_get_drvdata(component);
	int ret;

	dev_dbg(component->dev, "%s\n", __func__);
	snd_soc_component_init_regmap(component, chip->regmap);

	ret = mt6660_component_setting(component);
	if (ret < 0)
		dev_err(chip->dev, "mt6660 component setting failed\n");

	return ret;
}

static void mt6660_component_remove(struct snd_soc_component *component)
{
	dev_dbg(component->dev, "%s\n", __func__);
	snd_soc_component_exit_regmap(component);
}

static const struct snd_soc_component_driver mt6660_component_driver = {
	.probe = mt6660_component_probe,
	.remove = mt6660_component_remove,

	.controls = mt6660_component_snd_controls,
	.num_controls = ARRAY_SIZE(mt6660_component_snd_controls),
	.dapm_widgets = mt6660_component_dapm_widgets,
	.num_dapm_widgets = ARRAY_SIZE(mt6660_component_dapm_widgets),
	.dapm_routes = mt6660_component_dapm_routes,
	.num_dapm_routes = ARRAY_SIZE(mt6660_component_dapm_routes),

	.idle_bias_on = false, /* idle_bias_off = true */
};

static int mt6660_component_aif_hw_params(struct snd_pcm_substream *substream,
	struct snd_pcm_hw_params *hw_params, struct snd_soc_dai *dai)
{
	int word_len = params_physical_width(hw_params);
	int aud_bit = params_width(hw_params);
	u16 reg_data = 0;
	int ret;

	dev_dbg(dai->dev, "%s: ++\n", __func__);
	dev_dbg(dai->dev, "format: 0x%08x\n", params_format(hw_params));
	dev_dbg(dai->dev, "rate: 0x%08x\n", params_rate(hw_params));
	dev_dbg(dai->dev, "word_len: %d, aud_bit: %d\n", word_len, aud_bit);
	if (word_len > 32 || word_len < 16) {
		dev_err(dai->dev, "not supported word length\n");
		return -ENOTSUPP;
	}
	switch (aud_bit) {
	case 16:
		reg_data = 3;
		break;
	case 18:
		reg_data = 2;
		break;
	case 20:
		reg_data = 1;
		break;
	case 24:
	case 32:
		reg_data = 0;
		break;
	default:
		return -ENOTSUPP;
	}
	ret = snd_soc_component_update_bits(dai->component,
		MT6660_REG_SERIAL_CFG1, 0xc0, (reg_data << 6));
	if (ret < 0) {
		dev_err(dai->dev, "config aud bit fail\n");
		return ret;
	}
	ret = snd_soc_component_update_bits(dai->component,
		MT6660_REG_TDM_CFG3, 0x3f0, word_len << 4);
	if (ret < 0) {
		dev_err(dai->dev, "config word len fail\n");
		return ret;
	}
	dev_dbg(dai->dev, "%s: --\n", __func__);
	return 0;
}

static const struct snd_soc_dai_ops mt6660_component_aif_ops = {
	.hw_params = mt6660_component_aif_hw_params,
};

#define STUB_RATES	SNDRV_PCM_RATE_8000_192000
#define STUB_FORMATS	(SNDRV_PCM_FMTBIT_S16_LE | \
			SNDRV_PCM_FMTBIT_U16_LE | \
			SNDRV_PCM_FMTBIT_S24_LE | \
			SNDRV_PCM_FMTBIT_U24_LE | \
			SNDRV_PCM_FMTBIT_S32_LE | \
			SNDRV_PCM_FMTBIT_U32_LE)

static struct snd_soc_dai_driver mt6660_codec_dai = {
	.name = "mt6660-aif",
	.playback = {
		.stream_name	= "aif_playback",
		.channels_min	= 1,
		.channels_max	= 2,
		.rates		= STUB_RATES,
		.formats	= STUB_FORMATS,
	},
	.capture = {
		.stream_name	= "aif_capture",
		.channels_min	= 1,
		.channels_max	= 2,
		.rates = STUB_RATES,
		.formats = STUB_FORMATS,
	},
	/* dai properties */
	.symmetric_rates = 1,
	.symmetric_channels = 1,
	.symmetric_samplebits = 1,
	/* dai operations */
	.ops = &mt6660_component_aif_ops,
};

static int _mt6660_chip_id_check(struct mt6660_chip *chip)
{
	int ret;
	unsigned int val;

	ret = regmap_read(chip->regmap, MT6660_REG_DEVID, &val);
	if (ret < 0)
		return ret;
	val &= 0x0ff0;
	if (val != 0x00e0 && val != 0x01e0) {
		dev_err(chip->dev, "%s id(%x) not match\n", __func__, val);
		return -ENODEV;
	}
	return 0;
}

static int _mt6660_chip_sw_reset(struct mt6660_chip *chip)
{
	int ret;

	/* turn on main pll first, then trigger reset */
	ret = regmap_write(chip->regmap, MT6660_REG_SYSTEM_CTRL, 0x00);
	if (ret < 0)
		return ret;
	ret = regmap_write(chip->regmap, MT6660_REG_SYSTEM_CTRL, 0x80);
	if (ret < 0)
		return ret;
	msleep(30);
	return 0;
}

static int _mt6660_read_chip_revision(struct mt6660_chip *chip)
{
	int ret;
	unsigned int val;

	ret = regmap_read(chip->regmap, MT6660_REG_DEVID, &val);
	if (ret < 0) {
		dev_err(chip->dev, "get chip revision fail\n");
		return ret;
	}
	chip->chip_rev = val&0xff;
	dev_info(chip->dev, "%s chip_rev = %x\n", __func__, chip->chip_rev);
	return 0;
}

static int mt6660_i2c_probe(struct i2c_client *client,
			    const struct i2c_device_id *id)
{
	struct mt6660_chip *chip = NULL;
	int ret;

	dev_dbg(&client->dev, "%s\n", __func__);
	chip = devm_kzalloc(&client->dev, sizeof(*chip), GFP_KERNEL);
	if (!chip)
		return -ENOMEM;
	chip->i2c = client;
	chip->dev = &client->dev;
	mutex_init(&chip->io_lock);
	i2c_set_clientdata(client, chip);

	chip->regmap = devm_regmap_init(&client->dev,
		NULL, chip, &mt6660_regmap_config);
	if (IS_ERR(chip->regmap)) {
		ret = PTR_ERR(chip->regmap);
		dev_err(&client->dev, "failed to initialise regmap: %d\n", ret);
		return ret;
	}

	/* chip reset first */
	ret = _mt6660_chip_sw_reset(chip);
	if (ret < 0) {
		dev_err(chip->dev, "chip reset fail\n");
		goto probe_fail;
	}
	/* chip power on */
	ret = _mt6660_chip_power_on(chip, 1);
	if (ret < 0) {
		dev_err(chip->dev, "chip power on 2 fail\n");
		goto probe_fail;
	}
	/* chip devid check */
	ret = _mt6660_chip_id_check(chip);
	if (ret < 0) {
		dev_err(chip->dev, "chip id check fail\n");
		goto probe_fail;
	}
	/* chip revision get */
	ret = _mt6660_read_chip_revision(chip);
	if (ret < 0) {
		dev_err(chip->dev, "read chip revision fail\n");
		goto probe_fail;
	}
	pm_runtime_set_active(chip->dev);
	pm_runtime_enable(chip->dev);

	ret = devm_snd_soc_register_component(chip->dev,
					       &mt6660_component_driver,
					       &mt6660_codec_dai, 1);
	return ret;
probe_fail:
	_mt6660_chip_power_on(chip, 0);
	mutex_destroy(&chip->io_lock);
	return ret;
}

static int mt6660_i2c_remove(struct i2c_client *client)
{
	struct mt6660_chip *chip = i2c_get_clientdata(client);

	pm_runtime_disable(chip->dev);
	pm_runtime_set_suspended(chip->dev);
	mutex_destroy(&chip->io_lock);
	return 0;
}

static int __maybe_unused mt6660_i2c_runtime_suspend(struct device *dev)
{
	struct mt6660_chip *chip = dev_get_drvdata(dev);

	dev_dbg(dev, "enter low power mode\n");
	return regmap_update_bits(chip->regmap,
		MT6660_REG_SYSTEM_CTRL, 0x01, 0x01);
}

static int __maybe_unused mt6660_i2c_runtime_resume(struct device *dev)
{
	struct mt6660_chip *chip = dev_get_drvdata(dev);

	dev_dbg(dev, "exit low power mode\n");
	return regmap_update_bits(chip->regmap,
		MT6660_REG_SYSTEM_CTRL, 0x01, 0x00);
}

static const struct dev_pm_ops mt6660_dev_pm_ops = {
	SET_RUNTIME_PM_OPS(mt6660_i2c_runtime_suspend,
			   mt6660_i2c_runtime_resume, NULL)
};

static const struct of_device_id __maybe_unused mt6660_of_id[] = {
	{ .compatible = "mediatek,mt6660",},
	{},
};
MODULE_DEVICE_TABLE(of, mt6660_of_id);

static const struct i2c_device_id mt6660_i2c_id[] = {
	{"mt6660", 0 },
	{},
};
MODULE_DEVICE_TABLE(i2c, mt6660_i2c_id);

static struct i2c_driver mt6660_i2c_driver = {
	.driver = {
		.name = "mt6660",
		.of_match_table = of_match_ptr(mt6660_of_id),
		.pm = &mt6660_dev_pm_ops,
	},
	.probe = mt6660_i2c_probe,
	.remove = mt6660_i2c_remove,
	.id_table = mt6660_i2c_id,
};
module_i2c_driver(mt6660_i2c_driver);

MODULE_AUTHOR("Jeff Chang <jeff_chang@richtek.com>");
MODULE_DESCRIPTION("MT6660 SPKAMP Driver");
MODULE_LICENSE("GPL");
MODULE_VERSION("1.0.8_G");