xref: /openbmc/linux/sound/soc/codecs/tas571x.c (revision 9abcd240)
1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3  * TAS571x amplifier audio driver
4  *
5  * Copyright (C) 2015 Google, Inc.
6  * Copyright (c) 2013 Daniel Mack <zonque@gmail.com>
7  *
8  * TAS5721 support:
9  * Copyright (C) 2016 Petr Kulhavy, Barix AG <petr@barix.com>
10  *
11  * TAS5707 support:
12  * Copyright (C) 2018 Jerome Brunet, Baylibre SAS <jbrunet@baylibre.com>
13  */
14 
15 #include <linux/clk.h>
16 #include <linux/delay.h>
17 #include <linux/device.h>
18 #include <linux/gpio/consumer.h>
19 #include <linux/i2c.h>
20 #include <linux/init.h>
21 #include <linux/kernel.h>
22 #include <linux/module.h>
23 #include <linux/of_device.h>
24 #include <linux/regmap.h>
25 #include <linux/regulator/consumer.h>
26 #include <linux/stddef.h>
27 #include <sound/pcm_params.h>
28 #include <sound/soc.h>
29 #include <sound/tlv.h>
30 #include <asm/unaligned.h>
31 
32 #include "tas571x.h"
33 
34 #define TAS571X_MAX_SUPPLIES		6
35 
36 struct tas571x_chip {
37 	const char			*const *supply_names;
38 	int				num_supply_names;
39 	const struct snd_kcontrol_new	*controls;
40 	int				num_controls;
41 	const struct regmap_config	*regmap_config;
42 	int				vol_reg_size;
43 };
44 
45 struct tas571x_private {
46 	const struct tas571x_chip	*chip;
47 	struct regmap			*regmap;
48 	struct regulator_bulk_data	supplies[TAS571X_MAX_SUPPLIES];
49 	struct clk			*mclk;
50 	unsigned int			format;
51 	struct gpio_desc		*reset_gpio;
52 	struct gpio_desc		*pdn_gpio;
53 	struct snd_soc_component_driver	component_driver;
54 };
55 
tas571x_register_size(struct tas571x_private * priv,unsigned int reg)56 static int tas571x_register_size(struct tas571x_private *priv, unsigned int reg)
57 {
58 	switch (reg) {
59 	case TAS571X_MVOL_REG:
60 	case TAS571X_CH1_VOL_REG:
61 	case TAS571X_CH2_VOL_REG:
62 		return priv->chip->vol_reg_size;
63 	case TAS571X_INPUT_MUX_REG:
64 	case TAS571X_CH4_SRC_SELECT_REG:
65 	case TAS571X_PWM_MUX_REG:
66 	case TAS5717_CH1_RIGHT_CH_MIX_REG:
67 	case TAS5717_CH1_LEFT_CH_MIX_REG:
68 	case TAS5717_CH2_LEFT_CH_MIX_REG:
69 	case TAS5717_CH2_RIGHT_CH_MIX_REG:
70 		return 4;
71 	default:
72 		return 1;
73 	}
74 }
75 
tas571x_reg_write(void * context,unsigned int reg,unsigned int value)76 static int tas571x_reg_write(void *context, unsigned int reg,
77 			     unsigned int value)
78 {
79 	struct i2c_client *client = context;
80 	struct tas571x_private *priv = i2c_get_clientdata(client);
81 	unsigned int i, size;
82 	uint8_t buf[5];
83 	int ret;
84 
85 	size = tas571x_register_size(priv, reg);
86 	buf[0] = reg;
87 
88 	for (i = size; i >= 1; --i) {
89 		buf[i] = value;
90 		value >>= 8;
91 	}
92 
93 	ret = i2c_master_send(client, buf, size + 1);
94 	if (ret == size + 1)
95 		return 0;
96 	else if (ret < 0)
97 		return ret;
98 	else
99 		return -EIO;
100 }
101 
tas571x_reg_read(void * context,unsigned int reg,unsigned int * value)102 static int tas571x_reg_read(void *context, unsigned int reg,
103 			    unsigned int *value)
104 {
105 	struct i2c_client *client = context;
106 	struct tas571x_private *priv = i2c_get_clientdata(client);
107 	uint8_t send_buf, recv_buf[4];
108 	struct i2c_msg msgs[2];
109 	unsigned int size;
110 	unsigned int i;
111 	int ret;
112 
113 	size = tas571x_register_size(priv, reg);
114 	send_buf = reg;
115 
116 	msgs[0].addr = client->addr;
117 	msgs[0].len = sizeof(send_buf);
118 	msgs[0].buf = &send_buf;
119 	msgs[0].flags = 0;
120 
121 	msgs[1].addr = client->addr;
122 	msgs[1].len = size;
123 	msgs[1].buf = recv_buf;
124 	msgs[1].flags = I2C_M_RD;
125 
126 	ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs));
127 	if (ret < 0)
128 		return ret;
129 	else if (ret != ARRAY_SIZE(msgs))
130 		return -EIO;
131 
132 	*value = 0;
133 
134 	for (i = 0; i < size; i++) {
135 		*value <<= 8;
136 		*value |= recv_buf[i];
137 	}
138 
139 	return 0;
140 }
141 
142 /*
143  * register write for 8- and 20-byte registers
144  */
tas571x_reg_write_multiword(struct i2c_client * client,unsigned int reg,const long values[],size_t len)145 static int tas571x_reg_write_multiword(struct i2c_client *client,
146 		unsigned int reg, const long values[], size_t len)
147 {
148 	size_t i;
149 	uint8_t *buf, *p;
150 	int ret;
151 	size_t send_size = 1 + len * sizeof(uint32_t);
152 
153 	buf = kzalloc(send_size, GFP_KERNEL | GFP_DMA);
154 	if (!buf)
155 		return -ENOMEM;
156 	buf[0] = reg;
157 
158 	for (i = 0, p = buf + 1; i < len; i++, p += sizeof(uint32_t))
159 		put_unaligned_be32(values[i], p);
160 
161 	ret = i2c_master_send(client, buf, send_size);
162 
163 	kfree(buf);
164 
165 	if (ret == send_size)
166 		return 0;
167 	else if (ret < 0)
168 		return ret;
169 	else
170 		return -EIO;
171 }
172 
173 /*
174  * register read for 8- and 20-byte registers
175  */
tas571x_reg_read_multiword(struct i2c_client * client,unsigned int reg,long values[],size_t len)176 static int tas571x_reg_read_multiword(struct i2c_client *client,
177 		unsigned int reg, long values[], size_t len)
178 {
179 	unsigned int i;
180 	uint8_t send_buf;
181 	uint8_t *recv_buf, *p;
182 	struct i2c_msg msgs[2];
183 	unsigned int recv_size = len * sizeof(uint32_t);
184 	int ret;
185 
186 	recv_buf = kzalloc(recv_size, GFP_KERNEL | GFP_DMA);
187 	if (!recv_buf)
188 		return -ENOMEM;
189 
190 	send_buf = reg;
191 
192 	msgs[0].addr = client->addr;
193 	msgs[0].len = sizeof(send_buf);
194 	msgs[0].buf = &send_buf;
195 	msgs[0].flags = 0;
196 
197 	msgs[1].addr = client->addr;
198 	msgs[1].len = recv_size;
199 	msgs[1].buf = recv_buf;
200 	msgs[1].flags = I2C_M_RD;
201 
202 	ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs));
203 	if (ret < 0)
204 		goto err_ret;
205 	else if (ret != ARRAY_SIZE(msgs)) {
206 		ret = -EIO;
207 		goto err_ret;
208 	}
209 
210 	for (i = 0, p = recv_buf; i < len; i++, p += sizeof(uint32_t))
211 		values[i] = get_unaligned_be32(p);
212 
213 err_ret:
214 	kfree(recv_buf);
215 	return ret;
216 }
217 
218 /*
219  * Integer array controls for setting biquad, mixer, DRC coefficients.
220  * According to the datasheet each coefficient is effectively 26bits,
221  * i.e. stored as 32bits, where bits [31:26] are ignored.
222  * TI's TAS57xx Graphical Development Environment tool however produces
223  * coefficients with more than 26 bits. For this reason we allow values
224  * in the full 32-bits reange.
225  * The coefficients are ordered as given in the TAS571x data sheet:
226  * b0, b1, b2, a1, a2
227  */
228 
tas571x_coefficient_info(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_info * uinfo)229 static int tas571x_coefficient_info(struct snd_kcontrol *kcontrol,
230 				   struct snd_ctl_elem_info *uinfo)
231 {
232 	int numcoef = kcontrol->private_value >> 16;
233 
234 	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
235 	uinfo->count = numcoef;
236 	uinfo->value.integer.min = 0;
237 	uinfo->value.integer.max = 0xffffffff;
238 	return 0;
239 }
240 
tas571x_coefficient_get(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)241 static int tas571x_coefficient_get(struct snd_kcontrol *kcontrol,
242 				  struct snd_ctl_elem_value *ucontrol)
243 {
244 	struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
245 	struct i2c_client *i2c = to_i2c_client(component->dev);
246 	int numcoef = kcontrol->private_value >> 16;
247 	int index = kcontrol->private_value & 0xffff;
248 
249 	return tas571x_reg_read_multiword(i2c, index,
250 		ucontrol->value.integer.value, numcoef);
251 }
252 
tas571x_coefficient_put(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)253 static int tas571x_coefficient_put(struct snd_kcontrol *kcontrol,
254 				  struct snd_ctl_elem_value *ucontrol)
255 {
256 	struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
257 	struct i2c_client *i2c = to_i2c_client(component->dev);
258 	int numcoef = kcontrol->private_value >> 16;
259 	int index = kcontrol->private_value & 0xffff;
260 
261 	return tas571x_reg_write_multiword(i2c, index,
262 		ucontrol->value.integer.value, numcoef);
263 }
264 
tas571x_set_dai_fmt(struct snd_soc_dai * dai,unsigned int format)265 static int tas571x_set_dai_fmt(struct snd_soc_dai *dai, unsigned int format)
266 {
267 	struct tas571x_private *priv = snd_soc_component_get_drvdata(dai->component);
268 
269 	priv->format = format;
270 
271 	return 0;
272 }
273 
tas571x_hw_params(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * params,struct snd_soc_dai * dai)274 static int tas571x_hw_params(struct snd_pcm_substream *substream,
275 			     struct snd_pcm_hw_params *params,
276 			     struct snd_soc_dai *dai)
277 {
278 	struct tas571x_private *priv = snd_soc_component_get_drvdata(dai->component);
279 	u32 val;
280 
281 	switch (priv->format & SND_SOC_DAIFMT_FORMAT_MASK) {
282 	case SND_SOC_DAIFMT_RIGHT_J:
283 		val = 0x00;
284 		break;
285 	case SND_SOC_DAIFMT_I2S:
286 		val = 0x03;
287 		break;
288 	case SND_SOC_DAIFMT_LEFT_J:
289 		val = 0x06;
290 		break;
291 	default:
292 		return -EINVAL;
293 	}
294 
295 	if (params_width(params) >= 24)
296 		val += 2;
297 	else if (params_width(params) >= 20)
298 		val += 1;
299 
300 	return regmap_update_bits(priv->regmap, TAS571X_SDI_REG,
301 				  TAS571X_SDI_FMT_MASK, val);
302 }
303 
tas571x_mute(struct snd_soc_dai * dai,int mute,int direction)304 static int tas571x_mute(struct snd_soc_dai *dai, int mute, int direction)
305 {
306 	struct snd_soc_component *component = dai->component;
307 	u8 sysctl2;
308 	int ret;
309 
310 	sysctl2 = mute ? TAS571X_SYS_CTRL_2_SDN_MASK : 0;
311 
312 	ret = snd_soc_component_update_bits(component,
313 			    TAS571X_SYS_CTRL_2_REG,
314 		     TAS571X_SYS_CTRL_2_SDN_MASK,
315 		     sysctl2);
316 	usleep_range(1000, 2000);
317 
318 	return ret;
319 }
320 
tas571x_set_bias_level(struct snd_soc_component * component,enum snd_soc_bias_level level)321 static int tas571x_set_bias_level(struct snd_soc_component *component,
322 				  enum snd_soc_bias_level level)
323 {
324 	struct tas571x_private *priv = snd_soc_component_get_drvdata(component);
325 	int ret;
326 
327 	switch (level) {
328 	case SND_SOC_BIAS_ON:
329 		break;
330 	case SND_SOC_BIAS_PREPARE:
331 		break;
332 	case SND_SOC_BIAS_STANDBY:
333 		if (snd_soc_component_get_bias_level(component) == SND_SOC_BIAS_OFF) {
334 			if (!IS_ERR(priv->mclk)) {
335 				ret = clk_prepare_enable(priv->mclk);
336 				if (ret) {
337 					dev_err(component->dev,
338 						"Failed to enable master clock: %d\n",
339 						ret);
340 					return ret;
341 				}
342 			}
343 		}
344 		break;
345 	case SND_SOC_BIAS_OFF:
346 		if (!IS_ERR(priv->mclk))
347 			clk_disable_unprepare(priv->mclk);
348 		break;
349 	}
350 
351 	return 0;
352 }
353 
354 static const struct snd_soc_dai_ops tas571x_dai_ops = {
355 	.set_fmt	= tas571x_set_dai_fmt,
356 	.hw_params	= tas571x_hw_params,
357 	.mute_stream	= tas571x_mute,
358 	.no_capture_mute = 1,
359 };
360 
361 
362 #define BIQUAD_COEFS(xname, reg) \
363 {	.iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
364 	.info = tas571x_coefficient_info, \
365 	.get = tas571x_coefficient_get,\
366 	.put = tas571x_coefficient_put, \
367 	.access = SNDRV_CTL_ELEM_ACCESS_READWRITE, \
368 	.private_value = reg | (5 << 16) }
369 
370 static const char *const tas5711_supply_names[] = {
371 	"AVDD",
372 	"DVDD",
373 	"PVDD_A",
374 	"PVDD_B",
375 	"PVDD_C",
376 	"PVDD_D",
377 };
378 
379 static const DECLARE_TLV_DB_SCALE(tas5711_volume_tlv, -10350, 50, 1);
380 
381 static const struct snd_kcontrol_new tas5711_controls[] = {
382 	SOC_SINGLE_TLV("Master Volume",
383 		       TAS571X_MVOL_REG,
384 		       0, 0xff, 1, tas5711_volume_tlv),
385 	SOC_DOUBLE_R_TLV("Speaker Volume",
386 			 TAS571X_CH1_VOL_REG,
387 			 TAS571X_CH2_VOL_REG,
388 			 0, 0xff, 1, tas5711_volume_tlv),
389 	SOC_DOUBLE("Speaker Switch",
390 		   TAS571X_SOFT_MUTE_REG,
391 		   TAS571X_SOFT_MUTE_CH1_SHIFT, TAS571X_SOFT_MUTE_CH2_SHIFT,
392 		   1, 1),
393 };
394 
395 static const struct regmap_range tas571x_readonly_regs_range[] = {
396 	regmap_reg_range(TAS571X_CLK_CTRL_REG,  TAS571X_DEV_ID_REG),
397 };
398 
399 static const struct regmap_range tas571x_volatile_regs_range[] = {
400 	regmap_reg_range(TAS571X_CLK_CTRL_REG,  TAS571X_ERR_STATUS_REG),
401 	regmap_reg_range(TAS571X_OSC_TRIM_REG,  TAS571X_OSC_TRIM_REG),
402 };
403 
404 static const struct regmap_access_table tas571x_write_regs = {
405 	.no_ranges =	tas571x_readonly_regs_range,
406 	.n_no_ranges =	ARRAY_SIZE(tas571x_readonly_regs_range),
407 };
408 
409 static const struct regmap_access_table tas571x_volatile_regs = {
410 	.yes_ranges =	tas571x_volatile_regs_range,
411 	.n_yes_ranges =	ARRAY_SIZE(tas571x_volatile_regs_range),
412 
413 };
414 
415 static const struct reg_default tas5711_reg_defaults[] = {
416 	{ 0x04, 0x05 },
417 	{ 0x05, 0x40 },
418 	{ 0x06, 0x00 },
419 	{ 0x07, 0xff },
420 	{ 0x08, 0x30 },
421 	{ 0x09, 0x30 },
422 	{ 0x1b, 0x82 },
423 };
424 
425 static const struct regmap_config tas5711_regmap_config = {
426 	.reg_bits			= 8,
427 	.val_bits			= 32,
428 	.max_register			= 0xff,
429 	.reg_read			= tas571x_reg_read,
430 	.reg_write			= tas571x_reg_write,
431 	.reg_defaults			= tas5711_reg_defaults,
432 	.num_reg_defaults		= ARRAY_SIZE(tas5711_reg_defaults),
433 	.cache_type			= REGCACHE_RBTREE,
434 	.wr_table			= &tas571x_write_regs,
435 	.volatile_table			= &tas571x_volatile_regs,
436 };
437 
438 static const struct tas571x_chip tas5711_chip = {
439 	.supply_names			= tas5711_supply_names,
440 	.num_supply_names		= ARRAY_SIZE(tas5711_supply_names),
441 	.controls			= tas5711_controls,
442 	.num_controls			= ARRAY_SIZE(tas5711_controls),
443 	.regmap_config			= &tas5711_regmap_config,
444 	.vol_reg_size			= 1,
445 };
446 
447 static const struct regmap_range tas5707_volatile_regs_range[] = {
448 	regmap_reg_range(TAS571X_CLK_CTRL_REG,  TAS571X_ERR_STATUS_REG),
449 	regmap_reg_range(TAS571X_OSC_TRIM_REG,  TAS571X_OSC_TRIM_REG),
450 	regmap_reg_range(TAS5707_CH1_BQ0_REG, TAS5707_CH2_BQ6_REG),
451 };
452 
453 static const struct regmap_access_table tas5707_volatile_regs = {
454 	.yes_ranges =	tas5707_volatile_regs_range,
455 	.n_yes_ranges =	ARRAY_SIZE(tas5707_volatile_regs_range),
456 
457 };
458 
459 static const DECLARE_TLV_DB_SCALE(tas5707_volume_tlv, -7900, 50, 1);
460 
461 static const char * const tas5707_volume_slew_step_txt[] = {
462 	"256", "512", "1024", "2048",
463 };
464 
465 static const unsigned int tas5707_volume_slew_step_values[] = {
466 	3, 0, 1, 2,
467 };
468 
469 static SOC_VALUE_ENUM_SINGLE_DECL(tas5707_volume_slew_step_enum,
470 				  TAS571X_VOL_CFG_REG, 0, 0x3,
471 				  tas5707_volume_slew_step_txt,
472 				  tas5707_volume_slew_step_values);
473 
474 static const struct snd_kcontrol_new tas5707_controls[] = {
475 	SOC_SINGLE_TLV("Master Volume",
476 		       TAS571X_MVOL_REG,
477 		       0, 0xff, 1, tas5707_volume_tlv),
478 	SOC_DOUBLE_R_TLV("Speaker Volume",
479 			 TAS571X_CH1_VOL_REG,
480 			 TAS571X_CH2_VOL_REG,
481 			 0, 0xff, 1, tas5707_volume_tlv),
482 	SOC_DOUBLE("Speaker Switch",
483 		   TAS571X_SOFT_MUTE_REG,
484 		   TAS571X_SOFT_MUTE_CH1_SHIFT, TAS571X_SOFT_MUTE_CH2_SHIFT,
485 		   1, 1),
486 
487 	SOC_ENUM("Slew Rate Steps", tas5707_volume_slew_step_enum),
488 
489 	BIQUAD_COEFS("CH1 - Biquad 0", TAS5707_CH1_BQ0_REG),
490 	BIQUAD_COEFS("CH1 - Biquad 1", TAS5707_CH1_BQ1_REG),
491 	BIQUAD_COEFS("CH1 - Biquad 2", TAS5707_CH1_BQ2_REG),
492 	BIQUAD_COEFS("CH1 - Biquad 3", TAS5707_CH1_BQ3_REG),
493 	BIQUAD_COEFS("CH1 - Biquad 4", TAS5707_CH1_BQ4_REG),
494 	BIQUAD_COEFS("CH1 - Biquad 5", TAS5707_CH1_BQ5_REG),
495 	BIQUAD_COEFS("CH1 - Biquad 6", TAS5707_CH1_BQ6_REG),
496 
497 	BIQUAD_COEFS("CH2 - Biquad 0", TAS5707_CH2_BQ0_REG),
498 	BIQUAD_COEFS("CH2 - Biquad 1", TAS5707_CH2_BQ1_REG),
499 	BIQUAD_COEFS("CH2 - Biquad 2", TAS5707_CH2_BQ2_REG),
500 	BIQUAD_COEFS("CH2 - Biquad 3", TAS5707_CH2_BQ3_REG),
501 	BIQUAD_COEFS("CH2 - Biquad 4", TAS5707_CH2_BQ4_REG),
502 	BIQUAD_COEFS("CH2 - Biquad 5", TAS5707_CH2_BQ5_REG),
503 	BIQUAD_COEFS("CH2 - Biquad 6", TAS5707_CH2_BQ6_REG),
504 };
505 
506 static const struct reg_default tas5707_reg_defaults[] = {
507 	{TAS571X_CLK_CTRL_REG,		0x6c},
508 	{TAS571X_DEV_ID_REG,		0x70},
509 	{TAS571X_ERR_STATUS_REG,	0x00},
510 	{TAS571X_SYS_CTRL_1_REG,	0xa0},
511 	{TAS571X_SDI_REG,		0x05},
512 	{TAS571X_SYS_CTRL_2_REG,	0x40},
513 	{TAS571X_SOFT_MUTE_REG,		0x00},
514 	{TAS571X_MVOL_REG,		0xff},
515 	{TAS571X_CH1_VOL_REG,		0x30},
516 	{TAS571X_CH2_VOL_REG,		0x30},
517 	{TAS571X_VOL_CFG_REG,		0x91},
518 	{TAS571X_MODULATION_LIMIT_REG,	0x02},
519 	{TAS571X_IC_DELAY_CH1_REG,	0xac},
520 	{TAS571X_IC_DELAY_CH2_REG,	0x54},
521 	{TAS571X_IC_DELAY_CH3_REG,	0xac},
522 	{TAS571X_IC_DELAY_CH4_REG,	0x54},
523 	{TAS571X_START_STOP_PERIOD_REG,	0x0f},
524 	{TAS571X_OSC_TRIM_REG,		0x82},
525 	{TAS571X_BKND_ERR_REG,		0x02},
526 	{TAS571X_INPUT_MUX_REG,		0x17772},
527 	{TAS571X_PWM_MUX_REG,		0x1021345},
528 };
529 
530 static const struct regmap_config tas5707_regmap_config = {
531 	.reg_bits			= 8,
532 	.val_bits			= 32,
533 	.max_register			= 0xff,
534 	.reg_read			= tas571x_reg_read,
535 	.reg_write			= tas571x_reg_write,
536 	.reg_defaults			= tas5707_reg_defaults,
537 	.num_reg_defaults		= ARRAY_SIZE(tas5707_reg_defaults),
538 	.cache_type			= REGCACHE_RBTREE,
539 	.wr_table			= &tas571x_write_regs,
540 	.volatile_table			= &tas5707_volatile_regs,
541 };
542 
543 static const struct tas571x_chip tas5707_chip = {
544 	.supply_names			= tas5711_supply_names,
545 	.num_supply_names		= ARRAY_SIZE(tas5711_supply_names),
546 	.controls			= tas5707_controls,
547 	.num_controls			= ARRAY_SIZE(tas5707_controls),
548 	.regmap_config			= &tas5707_regmap_config,
549 	.vol_reg_size			= 1,
550 };
551 
552 static const char *const tas5717_supply_names[] = {
553 	"AVDD",
554 	"DVDD",
555 	"HPVDD",
556 	"PVDD_AB",
557 	"PVDD_CD",
558 };
559 
560 static const DECLARE_TLV_DB_SCALE(tas5717_volume_tlv, -10375, 25, 0);
561 
562 static const struct snd_kcontrol_new tas5717_controls[] = {
563 	/* MVOL LSB is ignored - see comments in tas571x_i2c_probe() */
564 	SOC_SINGLE_TLV("Master Volume",
565 		       TAS571X_MVOL_REG, 1, 0x1ff, 1,
566 		       tas5717_volume_tlv),
567 	SOC_DOUBLE_R_TLV("Speaker Volume",
568 			 TAS571X_CH1_VOL_REG, TAS571X_CH2_VOL_REG,
569 			 1, 0x1ff, 1, tas5717_volume_tlv),
570 	SOC_DOUBLE("Speaker Switch",
571 		   TAS571X_SOFT_MUTE_REG,
572 		   TAS571X_SOFT_MUTE_CH1_SHIFT, TAS571X_SOFT_MUTE_CH2_SHIFT,
573 		   1, 1),
574 
575 	SOC_DOUBLE_R_RANGE("CH1 Mixer Volume",
576 			   TAS5717_CH1_LEFT_CH_MIX_REG,
577 			   TAS5717_CH1_RIGHT_CH_MIX_REG,
578 			   16, 0, 0x80, 0),
579 
580 	SOC_DOUBLE_R_RANGE("CH2 Mixer Volume",
581 			   TAS5717_CH2_LEFT_CH_MIX_REG,
582 			   TAS5717_CH2_RIGHT_CH_MIX_REG,
583 			   16, 0, 0x80, 0),
584 
585 	/*
586 	 * The biquads are named according to the register names.
587 	 * Please note that TI's TAS57xx Graphical Development Environment
588 	 * tool names them different.
589 	 */
590 	BIQUAD_COEFS("CH1 - Biquad 0", TAS5717_CH1_BQ0_REG),
591 	BIQUAD_COEFS("CH1 - Biquad 1", TAS5717_CH1_BQ1_REG),
592 	BIQUAD_COEFS("CH1 - Biquad 2", TAS5717_CH1_BQ2_REG),
593 	BIQUAD_COEFS("CH1 - Biquad 3", TAS5717_CH1_BQ3_REG),
594 	BIQUAD_COEFS("CH1 - Biquad 4", TAS5717_CH1_BQ4_REG),
595 	BIQUAD_COEFS("CH1 - Biquad 5", TAS5717_CH1_BQ5_REG),
596 	BIQUAD_COEFS("CH1 - Biquad 6", TAS5717_CH1_BQ6_REG),
597 	BIQUAD_COEFS("CH1 - Biquad 7", TAS5717_CH1_BQ7_REG),
598 	BIQUAD_COEFS("CH1 - Biquad 8", TAS5717_CH1_BQ8_REG),
599 	BIQUAD_COEFS("CH1 - Biquad 9", TAS5717_CH1_BQ9_REG),
600 	BIQUAD_COEFS("CH1 - Biquad 10", TAS5717_CH1_BQ10_REG),
601 	BIQUAD_COEFS("CH1 - Biquad 11", TAS5717_CH1_BQ11_REG),
602 
603 	BIQUAD_COEFS("CH2 - Biquad 0", TAS5717_CH2_BQ0_REG),
604 	BIQUAD_COEFS("CH2 - Biquad 1", TAS5717_CH2_BQ1_REG),
605 	BIQUAD_COEFS("CH2 - Biquad 2", TAS5717_CH2_BQ2_REG),
606 	BIQUAD_COEFS("CH2 - Biquad 3", TAS5717_CH2_BQ3_REG),
607 	BIQUAD_COEFS("CH2 - Biquad 4", TAS5717_CH2_BQ4_REG),
608 	BIQUAD_COEFS("CH2 - Biquad 5", TAS5717_CH2_BQ5_REG),
609 	BIQUAD_COEFS("CH2 - Biquad 6", TAS5717_CH2_BQ6_REG),
610 	BIQUAD_COEFS("CH2 - Biquad 7", TAS5717_CH2_BQ7_REG),
611 	BIQUAD_COEFS("CH2 - Biquad 8", TAS5717_CH2_BQ8_REG),
612 	BIQUAD_COEFS("CH2 - Biquad 9", TAS5717_CH2_BQ9_REG),
613 	BIQUAD_COEFS("CH2 - Biquad 10", TAS5717_CH2_BQ10_REG),
614 	BIQUAD_COEFS("CH2 - Biquad 11", TAS5717_CH2_BQ11_REG),
615 
616 	BIQUAD_COEFS("CH3 - Biquad 0", TAS5717_CH3_BQ0_REG),
617 	BIQUAD_COEFS("CH3 - Biquad 1", TAS5717_CH3_BQ1_REG),
618 
619 	BIQUAD_COEFS("CH4 - Biquad 0", TAS5717_CH4_BQ0_REG),
620 	BIQUAD_COEFS("CH4 - Biquad 1", TAS5717_CH4_BQ1_REG),
621 };
622 
623 static const struct reg_default tas5717_reg_defaults[] = {
624 	{ 0x04, 0x05 },
625 	{ 0x05, 0x40 },
626 	{ 0x06, 0x00 },
627 	{ 0x07, 0x03ff },
628 	{ 0x08, 0x00c0 },
629 	{ 0x09, 0x00c0 },
630 	{ 0x1b, 0x82 },
631 	{ TAS5717_CH1_RIGHT_CH_MIX_REG, 0x0 },
632 	{ TAS5717_CH1_LEFT_CH_MIX_REG, 0x800000},
633 	{ TAS5717_CH2_LEFT_CH_MIX_REG, 0x0 },
634 	{ TAS5717_CH2_RIGHT_CH_MIX_REG, 0x800000},
635 };
636 
637 static const struct regmap_config tas5717_regmap_config = {
638 	.reg_bits			= 8,
639 	.val_bits			= 32,
640 	.max_register			= 0xff,
641 	.reg_read			= tas571x_reg_read,
642 	.reg_write			= tas571x_reg_write,
643 	.reg_defaults			= tas5717_reg_defaults,
644 	.num_reg_defaults		= ARRAY_SIZE(tas5717_reg_defaults),
645 	.cache_type			= REGCACHE_RBTREE,
646 	.wr_table			= &tas571x_write_regs,
647 	.volatile_table			= &tas571x_volatile_regs,
648 };
649 
650 /* This entry is reused for tas5719 as the software interface is identical. */
651 static const struct tas571x_chip tas5717_chip = {
652 	.supply_names			= tas5717_supply_names,
653 	.num_supply_names		= ARRAY_SIZE(tas5717_supply_names),
654 	.controls			= tas5717_controls,
655 	.num_controls			= ARRAY_SIZE(tas5717_controls),
656 	.regmap_config			= &tas5717_regmap_config,
657 	.vol_reg_size			= 2,
658 };
659 
660 static const char *const tas5721_supply_names[] = {
661 	"AVDD",
662 	"DVDD",
663 	"DRVDD",
664 	"PVDD",
665 };
666 
667 static const struct snd_kcontrol_new tas5721_controls[] = {
668 	SOC_SINGLE_TLV("Master Volume",
669 		       TAS571X_MVOL_REG,
670 		       0, 0xff, 1, tas5711_volume_tlv),
671 	SOC_DOUBLE_R_TLV("Speaker Volume",
672 			 TAS571X_CH1_VOL_REG,
673 			 TAS571X_CH2_VOL_REG,
674 			 0, 0xff, 1, tas5711_volume_tlv),
675 	SOC_DOUBLE("Speaker Switch",
676 		   TAS571X_SOFT_MUTE_REG,
677 		   TAS571X_SOFT_MUTE_CH1_SHIFT, TAS571X_SOFT_MUTE_CH2_SHIFT,
678 		   1, 1),
679 };
680 
681 static const struct reg_default tas5721_reg_defaults[] = {
682 	{TAS571X_CLK_CTRL_REG,		0x6c},
683 	{TAS571X_DEV_ID_REG,		0x00},
684 	{TAS571X_ERR_STATUS_REG,	0x00},
685 	{TAS571X_SYS_CTRL_1_REG,	0xa0},
686 	{TAS571X_SDI_REG,		0x05},
687 	{TAS571X_SYS_CTRL_2_REG,	0x40},
688 	{TAS571X_SOFT_MUTE_REG,		0x00},
689 	{TAS571X_MVOL_REG,		0xff},
690 	{TAS571X_CH1_VOL_REG,		0x30},
691 	{TAS571X_CH2_VOL_REG,		0x30},
692 	{TAS571X_CH3_VOL_REG,		0x30},
693 	{TAS571X_VOL_CFG_REG,		0x91},
694 	{TAS571X_MODULATION_LIMIT_REG,	0x02},
695 	{TAS571X_IC_DELAY_CH1_REG,	0xac},
696 	{TAS571X_IC_DELAY_CH2_REG,	0x54},
697 	{TAS571X_IC_DELAY_CH3_REG,	0xac},
698 	{TAS571X_IC_DELAY_CH4_REG,	0x54},
699 	{TAS571X_PWM_CH_SDN_GROUP_REG,	0x30},
700 	{TAS571X_START_STOP_PERIOD_REG,	0x0f},
701 	{TAS571X_OSC_TRIM_REG,		0x82},
702 	{TAS571X_BKND_ERR_REG,		0x02},
703 	{TAS571X_INPUT_MUX_REG,		0x17772},
704 	{TAS571X_CH4_SRC_SELECT_REG,	0x4303},
705 	{TAS571X_PWM_MUX_REG,		0x1021345},
706 };
707 
708 static const struct regmap_config tas5721_regmap_config = {
709 	.reg_bits			= 8,
710 	.val_bits			= 32,
711 	.max_register			= 0xff,
712 	.reg_read			= tas571x_reg_read,
713 	.reg_write			= tas571x_reg_write,
714 	.reg_defaults			= tas5721_reg_defaults,
715 	.num_reg_defaults		= ARRAY_SIZE(tas5721_reg_defaults),
716 	.cache_type			= REGCACHE_RBTREE,
717 	.wr_table			= &tas571x_write_regs,
718 	.volatile_table			= &tas571x_volatile_regs,
719 };
720 
721 static const char *const tas5733_supply_names[] = {
722 	"AVDD",
723 	"DVDD",
724 	"PVDD",
725 };
726 
727 static const struct reg_default tas5733_reg_defaults[] = {
728 	{TAS571X_CLK_CTRL_REG,          0x6c},
729 	{TAS571X_DEV_ID_REG,            0x00},
730 	{TAS571X_ERR_STATUS_REG,        0x00},
731 	{TAS571X_SYS_CTRL_1_REG,        0xa0},
732 	{TAS571X_SDI_REG,               0x05},
733 	{TAS571X_SYS_CTRL_2_REG,        0x40},
734 	{TAS571X_SOFT_MUTE_REG,         0x07},
735 	{TAS571X_MVOL_REG,              0x03ff},
736 	{TAS571X_CH1_VOL_REG,           0x00c0},
737 	{TAS571X_CH2_VOL_REG,           0x00c0},
738 	{TAS571X_CH3_VOL_REG,           0x00c0},
739 	{TAS571X_VOL_CFG_REG,           0xf0},
740 	{TAS571X_MODULATION_LIMIT_REG,  0x07},
741 	{TAS571X_IC_DELAY_CH1_REG,      0xb8},
742 	{TAS571X_IC_DELAY_CH2_REG,      0x60},
743 	{TAS571X_IC_DELAY_CH3_REG,      0xa0},
744 	{TAS571X_IC_DELAY_CH4_REG,      0x48},
745 	{TAS571X_PWM_CH_SDN_GROUP_REG,  0x30},
746 	{TAS571X_START_STOP_PERIOD_REG, 0x68},
747 	{TAS571X_OSC_TRIM_REG,          0x82},
748 	{TAS571X_BKND_ERR_REG,          0x02},
749 	{TAS571X_INPUT_MUX_REG,         0x00897772},
750 	{TAS571X_PWM_MUX_REG,           0x01021345},
751 	{TAS5717_CH1_RIGHT_CH_MIX_REG,  0x00},
752 	{TAS5717_CH1_LEFT_CH_MIX_REG,   0x800000},
753 	{TAS5717_CH2_LEFT_CH_MIX_REG,   0x00},
754 	{TAS5717_CH2_RIGHT_CH_MIX_REG,  0x800000},
755 };
756 
757 static const struct regmap_config tas5733_regmap_config = {
758 	.reg_bits                       = 8,
759 	.val_bits                       = 32,
760 	.max_register                   = 0xff,
761 	.reg_read                       = tas571x_reg_read,
762 	.reg_write                      = tas571x_reg_write,
763 	.reg_defaults                   = tas5733_reg_defaults,
764 	.num_reg_defaults               = ARRAY_SIZE(tas5733_reg_defaults),
765 	.cache_type                     = REGCACHE_RBTREE,
766 	.wr_table                       = &tas571x_write_regs,
767 	.volatile_table                 = &tas571x_volatile_regs,
768 };
769 
770 static const struct tas571x_chip tas5733_chip = {
771 	.supply_names                   = tas5733_supply_names,
772 	.num_supply_names               = ARRAY_SIZE(tas5733_supply_names),
773 	.controls                       = tas5717_controls,
774 	.num_controls                   = ARRAY_SIZE(tas5717_controls),
775 	.regmap_config                  = &tas5733_regmap_config,
776 	.vol_reg_size                   = 2,
777 };
778 
779 static const struct tas571x_chip tas5721_chip = {
780 	.supply_names			= tas5721_supply_names,
781 	.num_supply_names		= ARRAY_SIZE(tas5721_supply_names),
782 	.controls			= tas5721_controls,
783 	.num_controls			= ARRAY_SIZE(tas5721_controls),
784 	.regmap_config			= &tas5721_regmap_config,
785 	.vol_reg_size			= 1,
786 };
787 
788 static const struct snd_soc_dapm_widget tas571x_dapm_widgets[] = {
789 	SND_SOC_DAPM_DAC("DACL", NULL, SND_SOC_NOPM, 0, 0),
790 	SND_SOC_DAPM_DAC("DACR", NULL, SND_SOC_NOPM, 0, 0),
791 
792 	SND_SOC_DAPM_OUTPUT("OUT_A"),
793 	SND_SOC_DAPM_OUTPUT("OUT_B"),
794 	SND_SOC_DAPM_OUTPUT("OUT_C"),
795 	SND_SOC_DAPM_OUTPUT("OUT_D"),
796 };
797 
798 static const struct snd_soc_dapm_route tas571x_dapm_routes[] = {
799 	{ "DACL",  NULL, "Playback" },
800 	{ "DACR",  NULL, "Playback" },
801 
802 	{ "OUT_A", NULL, "DACL" },
803 	{ "OUT_B", NULL, "DACL" },
804 	{ "OUT_C", NULL, "DACR" },
805 	{ "OUT_D", NULL, "DACR" },
806 };
807 
808 static const struct snd_soc_component_driver tas571x_component = {
809 	.set_bias_level		= tas571x_set_bias_level,
810 	.dapm_widgets		= tas571x_dapm_widgets,
811 	.num_dapm_widgets	= ARRAY_SIZE(tas571x_dapm_widgets),
812 	.dapm_routes		= tas571x_dapm_routes,
813 	.num_dapm_routes	= ARRAY_SIZE(tas571x_dapm_routes),
814 	.use_pmdown_time	= 1,
815 	.endianness		= 1,
816 };
817 
818 static struct snd_soc_dai_driver tas571x_dai = {
819 	.name = "tas571x-hifi",
820 	.playback = {
821 		.stream_name = "Playback",
822 		.channels_min = 2,
823 		.channels_max = 2,
824 		.rates = SNDRV_PCM_RATE_8000_48000,
825 		.formats = SNDRV_PCM_FMTBIT_S32_LE |
826 			   SNDRV_PCM_FMTBIT_S24_LE |
827 			   SNDRV_PCM_FMTBIT_S16_LE,
828 	},
829 	.ops = &tas571x_dai_ops,
830 };
831 
832 static const struct of_device_id tas571x_of_match[] __maybe_unused;
833 static const struct i2c_device_id tas571x_i2c_id[];
834 
tas571x_i2c_probe(struct i2c_client * client)835 static int tas571x_i2c_probe(struct i2c_client *client)
836 {
837 	struct tas571x_private *priv;
838 	struct device *dev = &client->dev;
839 	const struct of_device_id *of_id;
840 	int i, ret;
841 
842 	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
843 	if (!priv)
844 		return -ENOMEM;
845 	i2c_set_clientdata(client, priv);
846 
847 	of_id = of_match_device(tas571x_of_match, dev);
848 	if (of_id)
849 		priv->chip = of_id->data;
850 	else {
851 		const struct i2c_device_id *id =
852 			i2c_match_id(tas571x_i2c_id, client);
853 		priv->chip = (void *) id->driver_data;
854 	}
855 
856 	priv->mclk = devm_clk_get(dev, "mclk");
857 	if (IS_ERR(priv->mclk) && PTR_ERR(priv->mclk) != -ENOENT) {
858 		dev_err(dev, "Failed to request mclk: %ld\n",
859 			PTR_ERR(priv->mclk));
860 		return PTR_ERR(priv->mclk);
861 	}
862 
863 	if (WARN_ON(priv->chip->num_supply_names > TAS571X_MAX_SUPPLIES))
864 		return -EINVAL;
865 	for (i = 0; i < priv->chip->num_supply_names; i++)
866 		priv->supplies[i].supply = priv->chip->supply_names[i];
867 
868 	ret = devm_regulator_bulk_get(dev, priv->chip->num_supply_names,
869 				      priv->supplies);
870 	if (ret) {
871 		dev_err(dev, "Failed to get supplies: %d\n", ret);
872 		return ret;
873 	}
874 	ret = regulator_bulk_enable(priv->chip->num_supply_names,
875 				    priv->supplies);
876 	if (ret) {
877 		dev_err(dev, "Failed to enable supplies: %d\n", ret);
878 		return ret;
879 	}
880 
881 	priv->regmap = devm_regmap_init(dev, NULL, client,
882 					priv->chip->regmap_config);
883 	if (IS_ERR(priv->regmap)) {
884 		ret = PTR_ERR(priv->regmap);
885 		goto disable_regs;
886 	}
887 
888 	priv->pdn_gpio = devm_gpiod_get_optional(dev, "pdn", GPIOD_OUT_LOW);
889 	if (IS_ERR(priv->pdn_gpio)) {
890 		dev_err(dev, "error requesting pdn_gpio: %ld\n",
891 			PTR_ERR(priv->pdn_gpio));
892 		ret = PTR_ERR(priv->pdn_gpio);
893 		goto disable_regs;
894 	}
895 
896 	priv->reset_gpio = devm_gpiod_get_optional(dev, "reset",
897 						   GPIOD_OUT_HIGH);
898 	if (IS_ERR(priv->reset_gpio)) {
899 		dev_err(dev, "error requesting reset_gpio: %ld\n",
900 			PTR_ERR(priv->reset_gpio));
901 		ret = PTR_ERR(priv->reset_gpio);
902 		goto disable_regs;
903 	} else if (priv->reset_gpio) {
904 		/* pulse the active low reset line for ~100us */
905 		usleep_range(100, 200);
906 		gpiod_set_value(priv->reset_gpio, 0);
907 		usleep_range(13500, 20000);
908 	}
909 
910 	ret = regmap_write(priv->regmap, TAS571X_OSC_TRIM_REG, 0);
911 	if (ret)
912 		goto disable_regs;
913 
914 	usleep_range(50000, 60000);
915 
916 	memcpy(&priv->component_driver, &tas571x_component, sizeof(priv->component_driver));
917 	priv->component_driver.controls = priv->chip->controls;
918 	priv->component_driver.num_controls = priv->chip->num_controls;
919 
920 	if (priv->chip->vol_reg_size == 2) {
921 		/*
922 		 * The master volume defaults to 0x3ff (mute), but we ignore
923 		 * (zero) the LSB because the hardware step size is 0.125 dB
924 		 * and TLV_DB_SCALE_ITEM has a resolution of 0.01 dB.
925 		 */
926 		ret = regmap_update_bits(priv->regmap, TAS571X_MVOL_REG, 1, 0);
927 		if (ret)
928 			goto disable_regs;
929 	}
930 
931 	ret = devm_snd_soc_register_component(&client->dev,
932 				      &priv->component_driver,
933 				      &tas571x_dai, 1);
934 	if (ret)
935 		goto disable_regs;
936 
937 	return ret;
938 
939 disable_regs:
940 	regulator_bulk_disable(priv->chip->num_supply_names, priv->supplies);
941 	return ret;
942 }
943 
tas571x_i2c_remove(struct i2c_client * client)944 static void tas571x_i2c_remove(struct i2c_client *client)
945 {
946 	struct tas571x_private *priv = i2c_get_clientdata(client);
947 
948 	regulator_bulk_disable(priv->chip->num_supply_names, priv->supplies);
949 }
950 
951 static const struct of_device_id tas571x_of_match[] __maybe_unused = {
952 	{ .compatible = "ti,tas5707", .data = &tas5707_chip, },
953 	{ .compatible = "ti,tas5711", .data = &tas5711_chip, },
954 	{ .compatible = "ti,tas5717", .data = &tas5717_chip, },
955 	{ .compatible = "ti,tas5719", .data = &tas5717_chip, },
956 	{ .compatible = "ti,tas5721", .data = &tas5721_chip, },
957 	{ .compatible = "ti,tas5733", .data = &tas5733_chip, },
958 	{ }
959 };
960 MODULE_DEVICE_TABLE(of, tas571x_of_match);
961 
962 static const struct i2c_device_id tas571x_i2c_id[] = {
963 	{ "tas5707", (kernel_ulong_t) &tas5707_chip },
964 	{ "tas5711", (kernel_ulong_t) &tas5711_chip },
965 	{ "tas5717", (kernel_ulong_t) &tas5717_chip },
966 	{ "tas5719", (kernel_ulong_t) &tas5717_chip },
967 	{ "tas5721", (kernel_ulong_t) &tas5721_chip },
968 	{ "tas5733", (kernel_ulong_t) &tas5733_chip },
969 	{ }
970 };
971 MODULE_DEVICE_TABLE(i2c, tas571x_i2c_id);
972 
973 static struct i2c_driver tas571x_i2c_driver = {
974 	.driver = {
975 		.name = "tas571x",
976 		.of_match_table = of_match_ptr(tas571x_of_match),
977 	},
978 	.probe = tas571x_i2c_probe,
979 	.remove = tas571x_i2c_remove,
980 	.id_table = tas571x_i2c_id,
981 };
982 module_i2c_driver(tas571x_i2c_driver);
983 
984 MODULE_DESCRIPTION("ASoC TAS571x driver");
985 MODULE_AUTHOR("Kevin Cernekee <cernekee@chromium.org>");
986 MODULE_LICENSE("GPL");
987