summaryrefslogtreecommitdiffstats
path: root/sound/soc/codecs/ssm4567.c
blob: bb4958bb8fe963758cefaac7b028763f9784e201 (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
// SPDX-License-Identifier: GPL-2.0-only
/*
 * SSM4567 amplifier audio driver
 *
 * Copyright 2014 Google Chromium project.
 *  Author: Anatol Pomozov <anatol@chromium.org>
 *
 * Based on code copyright/by:
 *   Copyright 2013 Analog Devices Inc.
 */

#include <linux/acpi.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/i2c.h>
#include <linux/regmap.h>
#include <linux/slab.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <sound/initval.h>
#include <sound/tlv.h>

#define SSM4567_REG_POWER_CTRL		0x00
#define SSM4567_REG_AMP_SNS_CTRL		0x01
#define SSM4567_REG_DAC_CTRL		0x02
#define SSM4567_REG_DAC_VOLUME		0x03
#define SSM4567_REG_SAI_CTRL_1		0x04
#define SSM4567_REG_SAI_CTRL_2		0x05
#define SSM4567_REG_SAI_PLACEMENT_1		0x06
#define SSM4567_REG_SAI_PLACEMENT_2		0x07
#define SSM4567_REG_SAI_PLACEMENT_3		0x08
#define SSM4567_REG_SAI_PLACEMENT_4		0x09
#define SSM4567_REG_SAI_PLACEMENT_5		0x0a
#define SSM4567_REG_SAI_PLACEMENT_6		0x0b
#define SSM4567_REG_BATTERY_V_OUT		0x0c
#define SSM4567_REG_LIMITER_CTRL_1		0x0d
#define SSM4567_REG_LIMITER_CTRL_2		0x0e
#define SSM4567_REG_LIMITER_CTRL_3		0x0f
#define SSM4567_REG_STATUS_1		0x10
#define SSM4567_REG_STATUS_2		0x11
#define SSM4567_REG_FAULT_CTRL		0x12
#define SSM4567_REG_PDM_CTRL		0x13
#define SSM4567_REG_MCLK_RATIO		0x14
#define SSM4567_REG_BOOST_CTRL_1		0x15
#define SSM4567_REG_BOOST_CTRL_2		0x16
#define SSM4567_REG_SOFT_RESET		0xff

/* POWER_CTRL */
#define SSM4567_POWER_APWDN_EN		BIT(7)
#define SSM4567_POWER_BSNS_PWDN		BIT(6)
#define SSM4567_POWER_VSNS_PWDN		BIT(5)
#define SSM4567_POWER_ISNS_PWDN		BIT(4)
#define SSM4567_POWER_BOOST_PWDN		BIT(3)
#define SSM4567_POWER_AMP_PWDN		BIT(2)
#define SSM4567_POWER_VBAT_ONLY		BIT(1)
#define SSM4567_POWER_SPWDN			BIT(0)

/* DAC_CTRL */
#define SSM4567_DAC_HV			BIT(7)
#define SSM4567_DAC_MUTE		BIT(6)
#define SSM4567_DAC_HPF			BIT(5)
#define SSM4567_DAC_LPM			BIT(4)
#define SSM4567_DAC_FS_MASK	0x7
#define SSM4567_DAC_FS_8000_12000	0x0
#define SSM4567_DAC_FS_16000_24000	0x1
#define SSM4567_DAC_FS_32000_48000	0x2
#define SSM4567_DAC_FS_64000_96000	0x3
#define SSM4567_DAC_FS_128000_192000	0x4

/* SAI_CTRL_1 */
#define SSM4567_SAI_CTRL_1_BCLK			BIT(6)
#define SSM4567_SAI_CTRL_1_TDM_BLCKS_MASK	(0x3 << 4)
#define SSM4567_SAI_CTRL_1_TDM_BLCKS_32		(0x0 << 4)
#define SSM4567_SAI_CTRL_1_TDM_BLCKS_48		(0x1 << 4)
#define SSM4567_SAI_CTRL_1_TDM_BLCKS_64		(0x2 << 4)
#define SSM4567_SAI_CTRL_1_FSYNC		BIT(3)
#define SSM4567_SAI_CTRL_1_LJ			BIT(2)
#define SSM4567_SAI_CTRL_1_TDM			BIT(1)
#define SSM4567_SAI_CTRL_1_PDM			BIT(0)

/* SAI_CTRL_2 */
#define SSM4567_SAI_CTRL_2_AUTO_SLOT		BIT(3)
#define SSM4567_SAI_CTRL_2_TDM_SLOT_MASK	0x7
#define SSM4567_SAI_CTRL_2_TDM_SLOT(x)		(x)

struct ssm4567 {
	struct regmap *regmap;
};

static const struct reg_default ssm4567_reg_defaults[] = {
	{ SSM4567_REG_POWER_CTRL,	0x81 },
	{ SSM4567_REG_AMP_SNS_CTRL, 0x09 },
	{ SSM4567_REG_DAC_CTRL, 0x32 },
	{ SSM4567_REG_DAC_VOLUME, 0x40 },
	{ SSM4567_REG_SAI_CTRL_1, 0x00 },
	{ SSM4567_REG_SAI_CTRL_2, 0x08 },
	{ SSM4567_REG_SAI_PLACEMENT_1, 0x01 },
	{ SSM4567_REG_SAI_PLACEMENT_2, 0x20 },
	{ SSM4567_REG_SAI_PLACEMENT_3, 0x32 },
	{ SSM4567_REG_SAI_PLACEMENT_4, 0x07 },
	{ SSM4567_REG_SAI_PLACEMENT_5, 0x07 },
	{ SSM4567_REG_SAI_PLACEMENT_6, 0x07 },
	{ SSM4567_REG_BATTERY_V_OUT, 0x00 },
	{ SSM4567_REG_LIMITER_CTRL_1, 0xa4 },
	{ SSM4567_REG_LIMITER_CTRL_2, 0x73 },
	{ SSM4567_REG_LIMITER_CTRL_3, 0x00 },
	{ SSM4567_REG_STATUS_1, 0x00 },
	{ SSM4567_REG_STATUS_2, 0x00 },
	{ SSM4567_REG_FAULT_CTRL, 0x30 },
	{ SSM4567_REG_PDM_CTRL, 0x40 },
	{ SSM4567_REG_MCLK_RATIO, 0x11 },
	{ SSM4567_REG_BOOST_CTRL_1, 0x03 },
	{ SSM4567_REG_BOOST_CTRL_2, 0x00 },
	{ SSM4567_REG_SOFT_RESET, 0x00 },
};


static bool ssm4567_readable_reg(struct device *dev, unsigned int reg)
{
	switch (reg) {
	case SSM4567_REG_POWER_CTRL ... SSM4567_REG_BOOST_CTRL_2:
		return true;
	default:
		return false;
	}

}

static bool ssm4567_writeable_reg(struct device *dev, unsigned int reg)
{
	switch (reg) {
	case SSM4567_REG_POWER_CTRL ... SSM4567_REG_SAI_PLACEMENT_6:
	case SSM4567_REG_LIMITER_CTRL_1 ... SSM4567_REG_LIMITER_CTRL_3:
	case SSM4567_REG_FAULT_CTRL ... SSM4567_REG_BOOST_CTRL_2:
	/* The datasheet states that soft reset register is read-only,
	 * but logically it is write-only. */
	case SSM4567_REG_SOFT_RESET:
		return true;
	default:
		return false;
	}
}

static bool ssm4567_volatile_reg(struct device *dev, unsigned int reg)
{
	switch (reg) {
	case SSM4567_REG_BATTERY_V_OUT:
	case SSM4567_REG_STATUS_1 ... SSM4567_REG_STATUS_2:
	case SSM4567_REG_SOFT_RESET:
		return true;
	default:
		return false;
	}
}

static const DECLARE_TLV_DB_MINMAX_MUTE(ssm4567_vol_tlv, -7125, 2400);

static const struct snd_kcontrol_new ssm4567_snd_controls[] = {
	SOC_SINGLE_TLV("Master Playback Volume", SSM4567_REG_DAC_VOLUME, 0,
		0xff, 1, ssm4567_vol_tlv),
	SOC_SINGLE("DAC Low Power Mode Switch", SSM4567_REG_DAC_CTRL, 4, 1, 0),
	SOC_SINGLE("DAC High Pass Filter Switch", SSM4567_REG_DAC_CTRL,
		5, 1, 0),
};

static const struct snd_kcontrol_new ssm4567_amplifier_boost_control =
	SOC_DAPM_SINGLE("Switch", SSM4567_REG_POWER_CTRL, 1, 1, 1);

static const struct snd_soc_dapm_widget ssm4567_dapm_widgets[] = {
	SND_SOC_DAPM_DAC("DAC", "HiFi Playback", SSM4567_REG_POWER_CTRL, 2, 1),
	SND_SOC_DAPM_SWITCH("Amplifier Boost", SSM4567_REG_POWER_CTRL, 3, 1,
		&ssm4567_amplifier_boost_control),

	SND_SOC_DAPM_SIGGEN("Sense"),

	SND_SOC_DAPM_PGA("Current Sense", SSM4567_REG_POWER_CTRL, 4, 1, NULL, 0),
	SND_SOC_DAPM_PGA("Voltage Sense", SSM4567_REG_POWER_CTRL, 5, 1, NULL, 0),
	SND_SOC_DAPM_PGA("VBAT Sense", SSM4567_REG_POWER_CTRL, 6, 1, NULL, 0),

	SND_SOC_DAPM_OUTPUT("OUT"),
};

static const struct snd_soc_dapm_route ssm4567_routes[] = {
	{ "OUT", NULL, "Amplifier Boost" },
	{ "Amplifier Boost", "Switch", "DAC" },
	{ "OUT", NULL, "DAC" },

	{ "Current Sense", NULL, "Sense" },
	{ "Voltage Sense", NULL, "Sense" },
	{ "VBAT Sense", NULL, "Sense" },
	{ "Capture Sense", NULL, "Current Sense" },
	{ "Capture Sense", NULL, "Voltage Sense" },
	{ "Capture Sense", NULL, "VBAT Sense" },
};

static int ssm4567_hw_params(struct snd_pcm_substream *substream,
	struct snd_pcm_hw_params *params, struct snd_soc_dai *dai)
{
	struct snd_soc_component *component = dai->component;
	struct ssm4567 *ssm4567 = snd_soc_component_get_drvdata(component);
	unsigned int rate = params_rate(params);
	unsigned int dacfs;

	if (rate >= 8000 && rate <= 12000)
		dacfs = SSM4567_DAC_FS_8000_12000;
	else if (rate >= 16000 && rate <= 24000)
		dacfs = SSM4567_DAC_FS_16000_24000;
	else if (rate >= 32000 && rate <= 48000)
		dacfs = SSM4567_DAC_FS_32000_48000;
	else if (rate >= 64000 && rate <= 96000)
		dacfs = SSM4567_DAC_FS_64000_96000;
	else if (rate >= 128000 && rate <= 192000)
		dacfs = SSM4567_DAC_FS_128000_192000;
	else
		return -EINVAL;

	return regmap_update_bits(ssm4567->regmap, SSM4567_REG_DAC_CTRL,
				SSM4567_DAC_FS_MASK, dacfs);
}

static int ssm4567_mute(struct snd_soc_dai *dai, int mute)
{
	struct ssm4567 *ssm4567 = snd_soc_component_get_drvdata(dai->component);
	unsigned int val;

	val = mute ? SSM4567_DAC_MUTE : 0;
	return regmap_update_bits(ssm4567->regmap, SSM4567_REG_DAC_CTRL,
			SSM4567_DAC_MUTE, val);
}

static int ssm4567_set_tdm_slot(struct snd_soc_dai *dai, unsigned int tx_mask,
	unsigned int rx_mask, int slots, int width)
{
	struct ssm4567 *ssm4567 = snd_soc_dai_get_drvdata(dai);
	unsigned int blcks;
	int slot;
	int ret;

	if (tx_mask == 0)
		return -EINVAL;

	if (rx_mask && rx_mask != tx_mask)
		return -EINVAL;

	slot = __ffs(tx_mask);
	if (tx_mask != BIT(slot))
		return -EINVAL;

	switch (width) {
	case 32:
		blcks = SSM4567_SAI_CTRL_1_TDM_BLCKS_32;
		break;
	case 48:
		blcks = SSM4567_SAI_CTRL_1_TDM_BLCKS_48;
		break;
	case 64:
		blcks = SSM4567_SAI_CTRL_1_TDM_BLCKS_64;
		break;
	default:
		return -EINVAL;
	}

	ret = regmap_update_bits(ssm4567->regmap, SSM4567_REG_SAI_CTRL_2,
		SSM4567_SAI_CTRL_2_AUTO_SLOT | SSM4567_SAI_CTRL_2_TDM_SLOT_MASK,
		SSM4567_SAI_CTRL_2_TDM_SLOT(slot));
	if (ret)
		return ret;

	return regmap_update_bits(ssm4567->regmap, SSM4567_REG_SAI_CTRL_1,
		SSM4567_SAI_CTRL_1_TDM_BLCKS_MASK, blcks);
}

static int ssm4567_set_dai_fmt(struct snd_soc_dai *dai, unsigned int fmt)
{
	struct ssm4567 *ssm4567 = snd_soc_dai_get_drvdata(dai);
	unsigned int ctrl1 = 0;
	bool invert_fclk;

	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:
		invert_fclk = false;
		break;
	case SND_SOC_DAIFMT_IB_NF:
		ctrl1 |= SSM4567_SAI_CTRL_1_BCLK;
		invert_fclk = false;
		break;
	case SND_SOC_DAIFMT_NB_IF:
		ctrl1 |= SSM4567_SAI_CTRL_1_FSYNC;
		invert_fclk = true;
		break;
	case SND_SOC_DAIFMT_IB_IF:
		ctrl1 |= SSM4567_SAI_CTRL_1_BCLK;
		invert_fclk = true;
		break;
	default:
		return -EINVAL;
	}

	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
	case SND_SOC_DAIFMT_I2S:
		break;
	case SND_SOC_DAIFMT_LEFT_J:
		ctrl1 |= SSM4567_SAI_CTRL_1_LJ;
		invert_fclk = !invert_fclk;
		break;
	case SND_SOC_DAIFMT_DSP_A:
		ctrl1 |= SSM4567_SAI_CTRL_1_TDM;
		break;
	case SND_SOC_DAIFMT_DSP_B:
		ctrl1 |= SSM4567_SAI_CTRL_1_TDM | SSM4567_SAI_CTRL_1_LJ;
		break;
	case SND_SOC_DAIFMT_PDM:
		ctrl1 |= SSM4567_SAI_CTRL_1_PDM;
		break;
	default:
		return -EINVAL;
	}

	if (invert_fclk)
		ctrl1 |= SSM4567_SAI_CTRL_1_FSYNC;

	return regmap_update_bits(ssm4567->regmap, SSM4567_REG_SAI_CTRL_1,
			SSM4567_SAI_CTRL_1_BCLK |
			SSM4567_SAI_CTRL_1_FSYNC |
			SSM4567_SAI_CTRL_1_LJ |
			SSM4567_SAI_CTRL_1_TDM |
			SSM4567_SAI_CTRL_1_PDM,
			ctrl1);
}

static int ssm4567_set_power(struct ssm4567 *ssm4567, bool enable)
{
	int ret = 0;

	if (!enable) {
		ret = regmap_update_bits(ssm4567->regmap,
			SSM4567_REG_POWER_CTRL,
			SSM4567_POWER_SPWDN, SSM4567_POWER_SPWDN);
		regcache_mark_dirty(ssm4567->regmap);
	}

	regcache_cache_only(ssm4567->regmap, !enable);

	if (enable) {
		ret = regmap_write(ssm4567->regmap, SSM4567_REG_SOFT_RESET,
			0x00);
		if (ret)
			return ret;

		ret = regmap_update_bits(ssm4567->regmap,
			SSM4567_REG_POWER_CTRL,
			SSM4567_POWER_SPWDN, 0x00);
		regcache_sync(ssm4567->regmap);
	}

	return ret;
}

static int ssm4567_set_bias_level(struct snd_soc_component *component,
	enum snd_soc_bias_level level)
{
	struct ssm4567 *ssm4567 = snd_soc_component_get_drvdata(component);
	int ret = 0;

	switch (level) {
	case SND_SOC_BIAS_ON:
		break;
	case SND_SOC_BIAS_PREPARE:
		break;
	case SND_SOC_BIAS_STANDBY:
		if (snd_soc_component_get_bias_level(component) == SND_SOC_BIAS_OFF)
			ret = ssm4567_set_power(ssm4567, true);
		break;
	case SND_SOC_BIAS_OFF:
		ret = ssm4567_set_power(ssm4567, false);
		break;
	}

	return ret;
}

static const struct snd_soc_dai_ops ssm4567_dai_ops = {
	.hw_params	= ssm4567_hw_params,
	.digital_mute	= ssm4567_mute,
	.set_fmt	= ssm4567_set_dai_fmt,
	.set_tdm_slot	= ssm4567_set_tdm_slot,
};

static struct snd_soc_dai_driver ssm4567_dai = {
	.name = "ssm4567-hifi",
	.playback = {
		.stream_name = "Playback",
		.channels_min = 1,
		.channels_max = 1,
		.rates = SNDRV_PCM_RATE_8000_192000,
		.formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_LE |
			SNDRV_PCM_FMTBIT_S32,
	},
	.capture = {
		.stream_name = "Capture Sense",
		.channels_min = 1,
		.channels_max = 1,
		.rates = SNDRV_PCM_RATE_8000_192000,
		.formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_LE |
			SNDRV_PCM_FMTBIT_S32,
	},
	.ops = &ssm4567_dai_ops,
};

static const struct snd_soc_component_driver ssm4567_component_driver = {
	.set_bias_level		= ssm4567_set_bias_level,
	.controls		= ssm4567_snd_controls,
	.num_controls		= ARRAY_SIZE(ssm4567_snd_controls),
	.dapm_widgets		= ssm4567_dapm_widgets,
	.num_dapm_widgets	= ARRAY_SIZE(ssm4567_dapm_widgets),
	.dapm_routes		= ssm4567_routes,
	.num_dapm_routes	= ARRAY_SIZE(ssm4567_routes),
	.use_pmdown_time	= 1,
	.endianness		= 1,
	.non_legacy_dai_naming	= 1,
};

static const struct regmap_config ssm4567_regmap_config = {
	.val_bits = 8,
	.reg_bits = 8,

	.max_register = SSM4567_REG_SOFT_RESET,
	.readable_reg = ssm4567_readable_reg,
	.writeable_reg = ssm4567_writeable_reg,
	.volatile_reg = ssm4567_volatile_reg,

	.cache_type = REGCACHE_RBTREE,
	.reg_defaults = ssm4567_reg_defaults,
	.num_reg_defaults = ARRAY_SIZE(ssm4567_reg_defaults),
};

static int ssm4567_i2c_probe(struct i2c_client *i2c,
	const struct i2c_device_id *id)
{
	struct ssm4567 *ssm4567;
	int ret;

	ssm4567 = devm_kzalloc(&i2c->dev, sizeof(*ssm4567), GFP_KERNEL);
	if (ssm4567 == NULL)
		return -ENOMEM;

	i2c_set_clientdata(i2c, ssm4567);

	ssm4567->regmap = devm_regmap_init_i2c(i2c, &ssm4567_regmap_config);
	if (IS_ERR(ssm4567->regmap))
		return PTR_ERR(ssm4567->regmap);

	ret = regmap_write(ssm4567->regmap, SSM4567_REG_SOFT_RESET, 0x00);
	if (ret)
		return ret;

	ret = ssm4567_set_power(ssm4567, false);
	if (ret)
		return ret;

	return devm_snd_soc_register_component(&i2c->dev, &ssm4567_component_driver,
			&ssm4567_dai, 1);
}

static const struct i2c_device_id ssm4567_i2c_ids[] = {
	{ "ssm4567", 0 },
	{ }
};
MODULE_DEVICE_TABLE(i2c, ssm4567_i2c_ids);

#ifdef CONFIG_OF
static const struct of_device_id ssm4567_of_match[] = {
	{ .compatible = "adi,ssm4567", },
	{ }
};
MODULE_DEVICE_TABLE(of, ssm4567_of_match);
#endif

#ifdef CONFIG_ACPI

static const struct acpi_device_id ssm4567_acpi_match[] = {
	{ "INT343B", 0 },
	{},
};
MODULE_DEVICE_TABLE(acpi, ssm4567_acpi_match);

#endif

static struct i2c_driver ssm4567_driver = {
	.driver = {
		.name = "ssm4567",
		.of_match_table = of_match_ptr(ssm4567_of_match),
		.acpi_match_table = ACPI_PTR(ssm4567_acpi_match),
	},
	.probe = ssm4567_i2c_probe,
	.id_table = ssm4567_i2c_ids,
};
module_i2c_driver(ssm4567_driver);

MODULE_DESCRIPTION("ASoC SSM4567 driver");
MODULE_AUTHOR("Anatol Pomozov <anatol@chromium.org>");
MODULE_LICENSE("GPL");