summaryrefslogtreecommitdiffstats
path: root/sound/soc/codecs/tas2781-comlib.c
blob: 5d0e5348b361a568475fd1fde3a299a57926b365 (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
// SPDX-License-Identifier: GPL-2.0
//
// tas2781-lib.c -- TAS2781 Common functions for HDA and ASoC Audio drivers
//
// Copyright 2023 Texas Instruments, Inc.
//
// Author: Shenghao Ding <shenghao-ding@ti.com>

#include <linux/crc8.h>
#include <linux/firmware.h>
#include <linux/gpio/consumer.h>
#include <linux/i2c.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/of_gpio.h>
#include <linux/of_irq.h>
#include <linux/regmap.h>
#include <linux/slab.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <sound/tas2781.h>

#define TASDEVICE_CRC8_POLYNOMIAL	0x4d

static const struct regmap_range_cfg tasdevice_ranges[] = {
	{
		.range_min = 0,
		.range_max = 256 * 128,
		.selector_reg = TASDEVICE_PAGE_SELECT,
		.selector_mask = 0xff,
		.selector_shift = 0,
		.window_start = 0,
		.window_len = 128,
	},
};

static const struct regmap_config tasdevice_regmap = {
	.reg_bits = 8,
	.val_bits = 8,
	.cache_type = REGCACHE_NONE,
	.ranges = tasdevice_ranges,
	.num_ranges = ARRAY_SIZE(tasdevice_ranges),
	.max_register = 256 * 128,
};

static int tasdevice_change_chn_book(struct tasdevice_priv *tas_priv,
	unsigned short chn, int book)
{
	struct i2c_client *client = (struct i2c_client *)tas_priv->client;
	int ret = 0;

	if (chn < tas_priv->ndev) {
		struct tasdevice *tasdev = &tas_priv->tasdevice[chn];
		struct regmap *map = tas_priv->regmap;

		if (client->addr != tasdev->dev_addr) {
			client->addr = tasdev->dev_addr;
			/* All tas2781s share the same regmap, clear the page
			 * inside regmap once switching to another tas2781.
			 * Register 0 at any pages and any books inside tas2781
			 * is the same one for page-switching.
			 */
			ret = regmap_write(map, TASDEVICE_PAGE_SELECT, 0);
			if (ret < 0) {
				dev_err(tas_priv->dev, "%s, E=%d\n",
					__func__, ret);
				goto out;
			}
		}

		if (tasdev->cur_book != book) {
			ret = regmap_write(map, TASDEVICE_BOOKCTL_REG, book);
			if (ret < 0) {
				dev_err(tas_priv->dev, "%s, E=%d\n",
					__func__, ret);
				goto out;
			}
			tasdev->cur_book = book;
		}
	} else {
		ret = -EINVAL;
		dev_err(tas_priv->dev, "%s, no such channel(%d)\n", __func__,
			chn);
	}

out:
	return ret;
}

int tasdevice_dev_read(struct tasdevice_priv *tas_priv,
	unsigned short chn, unsigned int reg, unsigned int *val)
{
	int ret = 0;

	if (chn < tas_priv->ndev) {
		struct regmap *map = tas_priv->regmap;

		ret = tasdevice_change_chn_book(tas_priv, chn,
			TASDEVICE_BOOK_ID(reg));
		if (ret < 0)
			goto out;

		ret = regmap_read(map, TASDEVICE_PGRG(reg), val);
		if (ret < 0)
			dev_err(tas_priv->dev, "%s, E=%d\n", __func__, ret);
	} else {
		ret = -EINVAL;
		dev_err(tas_priv->dev, "%s, no such channel(%d)\n", __func__,
			chn);
	}

out:
	return ret;
}
EXPORT_SYMBOL_GPL(tasdevice_dev_read);

int tasdevice_dev_write(struct tasdevice_priv *tas_priv,
	unsigned short chn, unsigned int reg, unsigned int value)
{
	int ret = 0;

	if (chn < tas_priv->ndev) {
		struct regmap *map = tas_priv->regmap;

		ret = tasdevice_change_chn_book(tas_priv, chn,
			TASDEVICE_BOOK_ID(reg));
		if (ret < 0)
			goto out;

		ret = regmap_write(map, TASDEVICE_PGRG(reg),
			value);
		if (ret < 0)
			dev_err(tas_priv->dev, "%s, E=%d\n", __func__, ret);
	} else {
		ret = -EINVAL;
		dev_err(tas_priv->dev, "%s, no such channel(%d)\n", __func__,
			chn);
	}

out:
	return ret;
}
EXPORT_SYMBOL_GPL(tasdevice_dev_write);

int tasdevice_dev_bulk_write(
	struct tasdevice_priv *tas_priv, unsigned short chn,
	unsigned int reg, unsigned char *data,
	unsigned int len)
{
	int ret = 0;

	if (chn < tas_priv->ndev) {
		struct regmap *map = tas_priv->regmap;

		ret = tasdevice_change_chn_book(tas_priv, chn,
			TASDEVICE_BOOK_ID(reg));
		if (ret < 0)
			goto out;

		ret = regmap_bulk_write(map, TASDEVICE_PGRG(reg),
			data, len);
		if (ret < 0)
			dev_err(tas_priv->dev, "%s, E=%d\n", __func__, ret);
	} else {
		ret = -EINVAL;
		dev_err(tas_priv->dev, "%s, no such channel(%d)\n", __func__,
			chn);
	}

out:
	return ret;
}
EXPORT_SYMBOL_GPL(tasdevice_dev_bulk_write);

int tasdevice_dev_bulk_read(struct tasdevice_priv *tas_priv,
	unsigned short chn, unsigned int reg, unsigned char *data,
	unsigned int len)
{
	int ret = 0;

	if (chn < tas_priv->ndev) {
		struct regmap *map = tas_priv->regmap;

		ret = tasdevice_change_chn_book(tas_priv, chn,
			TASDEVICE_BOOK_ID(reg));
		if (ret < 0)
			goto out;

		ret = regmap_bulk_read(map, TASDEVICE_PGRG(reg), data, len);
		if (ret < 0)
			dev_err(tas_priv->dev, "%s, E=%d\n", __func__, ret);
	} else
		dev_err(tas_priv->dev, "%s, no such channel(%d)\n", __func__,
			chn);

out:
	return ret;
}
EXPORT_SYMBOL_GPL(tasdevice_dev_bulk_read);

int tasdevice_dev_update_bits(
	struct tasdevice_priv *tas_priv, unsigned short chn,
	unsigned int reg, unsigned int mask, unsigned int value)
{
	int ret = 0;

	if (chn < tas_priv->ndev) {
		struct regmap *map = tas_priv->regmap;

		ret = tasdevice_change_chn_book(tas_priv, chn,
			TASDEVICE_BOOK_ID(reg));
		if (ret < 0)
			goto out;

		ret = regmap_update_bits(map, TASDEVICE_PGRG(reg),
			mask, value);
		if (ret < 0)
			dev_err(tas_priv->dev, "%s, E=%d\n", __func__, ret);
	} else {
		dev_err(tas_priv->dev, "%s, no such channel(%d)\n", __func__,
			chn);
		ret = -EINVAL;
	}

out:
	return ret;
}
EXPORT_SYMBOL_GPL(tasdevice_dev_update_bits);

struct tasdevice_priv *tasdevice_kzalloc(struct i2c_client *i2c)
{
	struct tasdevice_priv *tas_priv;

	tas_priv = devm_kzalloc(&i2c->dev, sizeof(*tas_priv), GFP_KERNEL);
	if (!tas_priv)
		return NULL;
	tas_priv->dev = &i2c->dev;
	tas_priv->client = (void *)i2c;

	return tas_priv;
}
EXPORT_SYMBOL_GPL(tasdevice_kzalloc);

void tas2781_reset(struct tasdevice_priv *tas_dev)
{
	int ret, i;

	if (tas_dev->reset) {
		gpiod_set_value_cansleep(tas_dev->reset, 0);
		usleep_range(500, 1000);
		gpiod_set_value_cansleep(tas_dev->reset, 1);
	} else {
		for (i = 0; i < tas_dev->ndev; i++) {
			ret = tasdevice_dev_write(tas_dev, i,
				TAS2781_REG_SWRESET,
				TAS2781_REG_SWRESET_RESET);
			if (ret < 0)
				dev_err(tas_dev->dev,
					"dev %d swreset fail, %d\n",
					i, ret);
		}
	}
	usleep_range(1000, 1050);
}
EXPORT_SYMBOL_GPL(tas2781_reset);

int tascodec_init(struct tasdevice_priv *tas_priv, void *codec,
	struct module *module,
	void (*cont)(const struct firmware *fw, void *context))
{
	int ret = 0;

	/* Codec Lock Hold to ensure that codec_probe and firmware parsing and
	 * loading do not simultaneously execute.
	 */
	mutex_lock(&tas_priv->codec_lock);

	scnprintf(tas_priv->rca_binaryname, 64, "%sRCA%d.bin",
		tas_priv->dev_name, tas_priv->ndev);
	crc8_populate_msb(tas_priv->crc8_lkp_tbl, TASDEVICE_CRC8_POLYNOMIAL);
	tas_priv->codec = codec;
	ret = request_firmware_nowait(module, FW_ACTION_UEVENT,
		tas_priv->rca_binaryname, tas_priv->dev, GFP_KERNEL, tas_priv,
		cont);
	if (ret)
		dev_err(tas_priv->dev, "request_firmware_nowait err:0x%08x\n",
			ret);

	/* Codec Lock Release*/
	mutex_unlock(&tas_priv->codec_lock);
	return ret;
}
EXPORT_SYMBOL_GPL(tascodec_init);

int tasdevice_init(struct tasdevice_priv *tas_priv)
{
	int ret = 0;
	int i;

	tas_priv->regmap = devm_regmap_init_i2c(tas_priv->client,
		&tasdevice_regmap);
	if (IS_ERR(tas_priv->regmap)) {
		ret = PTR_ERR(tas_priv->regmap);
		dev_err(tas_priv->dev, "Failed to allocate register map: %d\n",
			ret);
		goto out;
	}

	tas_priv->cur_prog = -1;
	tas_priv->cur_conf = -1;

	for (i = 0; i < tas_priv->ndev; i++) {
		tas_priv->tasdevice[i].cur_book = -1;
		tas_priv->tasdevice[i].cur_prog = -1;
		tas_priv->tasdevice[i].cur_conf = -1;
	}

	mutex_init(&tas_priv->codec_lock);

out:
	return ret;
}
EXPORT_SYMBOL_GPL(tasdevice_init);

static void tasdev_dsp_prog_blk_remove(struct tasdevice_prog *prog)
{
	struct tasdevice_data *tas_dt;
	struct tasdev_blk *blk;
	unsigned int i;

	if (!prog)
		return;

	tas_dt = &(prog->dev_data);

	if (!tas_dt->dev_blks)
		return;

	for (i = 0; i < tas_dt->nr_blk; i++) {
		blk = &(tas_dt->dev_blks[i]);
		kfree(blk->data);
	}
	kfree(tas_dt->dev_blks);
}

static void tasdev_dsp_prog_remove(struct tasdevice_prog *prog,
	unsigned short nr)
{
	int i;

	for (i = 0; i < nr; i++)
		tasdev_dsp_prog_blk_remove(&prog[i]);
	kfree(prog);
}

static void tasdev_dsp_cfg_blk_remove(struct tasdevice_config *cfg)
{
	struct tasdevice_data *tas_dt;
	struct tasdev_blk *blk;
	unsigned int i;

	if (cfg) {
		tas_dt = &(cfg->dev_data);

		if (!tas_dt->dev_blks)
			return;

		for (i = 0; i < tas_dt->nr_blk; i++) {
			blk = &(tas_dt->dev_blks[i]);
			kfree(blk->data);
		}
		kfree(tas_dt->dev_blks);
	}
}

static void tasdev_dsp_cfg_remove(struct tasdevice_config *config,
	unsigned short nr)
{
	int i;

	for (i = 0; i < nr; i++)
		tasdev_dsp_cfg_blk_remove(&config[i]);
	kfree(config);
}

void tasdevice_dsp_remove(void *context)
{
	struct tasdevice_priv *tas_dev = (struct tasdevice_priv *) context;
	struct tasdevice_fw *tas_fmw = tas_dev->fmw;

	if (!tas_dev->fmw)
		return;

	if (tas_fmw->programs)
		tasdev_dsp_prog_remove(tas_fmw->programs,
			tas_fmw->nr_programs);
	if (tas_fmw->configs)
		tasdev_dsp_cfg_remove(tas_fmw->configs,
			tas_fmw->nr_configurations);
	kfree(tas_fmw);
	tas_dev->fmw = NULL;
}
EXPORT_SYMBOL_GPL(tasdevice_dsp_remove);

void tasdevice_remove(struct tasdevice_priv *tas_priv)
{
	if (gpio_is_valid(tas_priv->irq_info.irq_gpio))
		gpio_free(tas_priv->irq_info.irq_gpio);
	kfree(tas_priv->acpi_subsystem_id);
	mutex_destroy(&tas_priv->codec_lock);
}
EXPORT_SYMBOL_GPL(tasdevice_remove);

int tasdevice_save_calibration(struct tasdevice_priv *tas_priv)
{
	if (tas_priv->save_calibration)
		return tas_priv->save_calibration(tas_priv);
	return -EINVAL;
}
EXPORT_SYMBOL_GPL(tasdevice_save_calibration);

void tasdevice_apply_calibration(struct tasdevice_priv *tas_priv)
{
	if (tas_priv->apply_calibration && tas_priv->cali_data.total_sz)
		tas_priv->apply_calibration(tas_priv);
}
EXPORT_SYMBOL_GPL(tasdevice_apply_calibration);

static int tasdevice_clamp(int val, int max, unsigned int invert)
{
	if (val > max)
		val = max;
	if (invert)
		val = max - val;
	if (val < 0)
		val = 0;
	return val;
}

int tasdevice_amp_putvol(struct tasdevice_priv *tas_priv,
	struct snd_ctl_elem_value *ucontrol, struct soc_mixer_control *mc)
{
	unsigned int invert = mc->invert;
	unsigned char mask;
	int max = mc->max;
	int err_cnt = 0;
	int val, i, ret;

	mask = (1 << fls(max)) - 1;
	mask <<= mc->shift;
	val = tasdevice_clamp(ucontrol->value.integer.value[0], max, invert);
	for (i = 0; i < tas_priv->ndev; i++) {
		ret = tasdevice_dev_update_bits(tas_priv, i,
			mc->reg, mask, (unsigned int)(val << mc->shift));
		if (!ret)
			continue;
		err_cnt++;
		dev_err(tas_priv->dev, "set AMP vol error in dev %d\n", i);
	}

	/* All the devices set error, return 0 */
	return (err_cnt == tas_priv->ndev) ? 0 : 1;
}
EXPORT_SYMBOL_GPL(tasdevice_amp_putvol);

int tasdevice_amp_getvol(struct tasdevice_priv *tas_priv,
	struct snd_ctl_elem_value *ucontrol, struct soc_mixer_control *mc)
{
	unsigned int invert = mc->invert;
	unsigned char mask = 0;
	int max = mc->max;
	int ret = 0;
	int val;

	/* Read the primary device */
	ret = tasdevice_dev_read(tas_priv, 0, mc->reg, &val);
	if (ret) {
		dev_err(tas_priv->dev, "%s, get AMP vol error\n", __func__);
		goto out;
	}

	mask = (1 << fls(max)) - 1;
	mask <<= mc->shift;
	val = (val & mask) >> mc->shift;
	val = tasdevice_clamp(val, max, invert);
	ucontrol->value.integer.value[0] = val;

out:
	return ret;

}
EXPORT_SYMBOL_GPL(tasdevice_amp_getvol);

int tasdevice_digital_putvol(struct tasdevice_priv *tas_priv,
	struct snd_ctl_elem_value *ucontrol, struct soc_mixer_control *mc)
{
	unsigned int invert = mc->invert;
	int max = mc->max;
	int err_cnt = 0;
	int ret;
	int val, i;

	val = tasdevice_clamp(ucontrol->value.integer.value[0], max, invert);

	for (i = 0; i < tas_priv->ndev; i++) {
		ret = tasdevice_dev_write(tas_priv, i, mc->reg,
			(unsigned int)val);
		if (!ret)
			continue;
		err_cnt++;
		dev_err(tas_priv->dev,
			"set digital vol err in dev %d\n", i);
	}

	/* All the devices set error, return 0 */
	return (err_cnt == tas_priv->ndev) ? 0 : 1;

}
EXPORT_SYMBOL_GPL(tasdevice_digital_putvol);

int tasdevice_digital_getvol(struct tasdevice_priv *tas_priv,
	struct snd_ctl_elem_value *ucontrol, struct soc_mixer_control *mc)
{
	unsigned int invert = mc->invert;
	int max = mc->max;
	int ret, val;

	/* Read the primary device as the whole */
	ret = tasdevice_dev_read(tas_priv, 0, mc->reg, &val);
	if (ret) {
		dev_err(tas_priv->dev, "%s, get digital vol error\n",
			__func__);
		goto out;
	}

	val = tasdevice_clamp(val, max, invert);
	ucontrol->value.integer.value[0] = val;

out:
	return ret;

}
EXPORT_SYMBOL_GPL(tasdevice_digital_getvol);

MODULE_DESCRIPTION("TAS2781 common library");
MODULE_AUTHOR("Shenghao Ding, TI, <shenghao-ding@ti.com>");
MODULE_LICENSE("GPL");