1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * tas5720.c - ALSA SoC Texas Instruments TAS5720 Mono Audio Amplifier
4 *
5 * Copyright (C)2015-2016 Texas Instruments Incorporated - https://www.ti.com
6 *
7 * Author: Andreas Dannenberg <dannenberg@ti.com>
8 */
9
10#include <linux/module.h>
11#include <linux/errno.h>
12#include <linux/device.h>
13#include <linux/i2c.h>
14#include <linux/regmap.h>
15#include <linux/slab.h>
16#include <linux/regulator/consumer.h>
17#include <linux/delay.h>
18
19#include <sound/pcm.h>
20#include <sound/pcm_params.h>
21#include <sound/soc.h>
22#include <sound/soc-dapm.h>
23#include <sound/tlv.h>
24
25#include "tas5720.h"
26
27/* Define how often to check (and clear) the fault status register (in ms) */
28#define TAS5720_FAULT_CHECK_INTERVAL 200
29
30enum tas572x_type {
31 TAS5720,
32 TAS5720A_Q1,
33 TAS5722,
34};
35
36static const char * const tas5720_supply_names[] = {
37 "dvdd", /* Digital power supply. Connect to 3.3-V supply. */
38 "pvdd", /* Class-D amp and analog power supply (connected). */
39};
40
41#define TAS5720_NUM_SUPPLIES ARRAY_SIZE(tas5720_supply_names)
42
43struct tas5720_data {
44 struct snd_soc_component *component;
45 struct regmap *regmap;
46 enum tas572x_type devtype;
47 struct regulator_bulk_data supplies[TAS5720_NUM_SUPPLIES];
48 struct delayed_work fault_check_work;
49 unsigned int last_fault;
50};
51
52static int tas5720_hw_params(struct snd_pcm_substream *substream,
53 struct snd_pcm_hw_params *params,
54 struct snd_soc_dai *dai)
55{
56 struct snd_soc_component *component = dai->component;
57 unsigned int rate = params_rate(p: params);
58 bool ssz_ds;
59 int ret;
60
61 switch (rate) {
62 case 44100:
63 case 48000:
64 ssz_ds = false;
65 break;
66 case 88200:
67 case 96000:
68 ssz_ds = true;
69 break;
70 default:
71 dev_err(component->dev, "unsupported sample rate: %u\n", rate);
72 return -EINVAL;
73 }
74
75 ret = snd_soc_component_update_bits(component, TAS5720_DIGITAL_CTRL1_REG,
76 TAS5720_SSZ_DS, val: ssz_ds);
77 if (ret < 0) {
78 dev_err(component->dev, "error setting sample rate: %d\n", ret);
79 return ret;
80 }
81
82 return 0;
83}
84
85static int tas5720_set_dai_fmt(struct snd_soc_dai *dai, unsigned int fmt)
86{
87 struct snd_soc_component *component = dai->component;
88 u8 serial_format;
89 int ret;
90
91 if ((fmt & SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK) != SND_SOC_DAIFMT_CBC_CFC) {
92 dev_vdbg(component->dev, "DAI clocking invalid\n");
93 return -EINVAL;
94 }
95
96 switch (fmt & (SND_SOC_DAIFMT_FORMAT_MASK |
97 SND_SOC_DAIFMT_INV_MASK)) {
98 case (SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF):
99 /* 1st data bit occur one BCLK cycle after the frame sync */
100 serial_format = TAS5720_SAIF_I2S;
101 break;
102 case (SND_SOC_DAIFMT_DSP_A | SND_SOC_DAIFMT_NB_NF):
103 /*
104 * Note that although the TAS5720 does not have a dedicated DSP
105 * mode it doesn't care about the LRCLK duty cycle during TDM
106 * operation. Therefore we can use the device's I2S mode with
107 * its delaying of the 1st data bit to receive DSP_A formatted
108 * data. See device datasheet for additional details.
109 */
110 serial_format = TAS5720_SAIF_I2S;
111 break;
112 case (SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_NB_NF):
113 /*
114 * Similar to DSP_A, we can use the fact that the TAS5720 does
115 * not care about the LRCLK duty cycle during TDM to receive
116 * DSP_B formatted data in LEFTJ mode (no delaying of the 1st
117 * data bit).
118 */
119 serial_format = TAS5720_SAIF_LEFTJ;
120 break;
121 case (SND_SOC_DAIFMT_LEFT_J | SND_SOC_DAIFMT_NB_NF):
122 /* No delay after the frame sync */
123 serial_format = TAS5720_SAIF_LEFTJ;
124 break;
125 default:
126 dev_vdbg(component->dev, "DAI Format is not found\n");
127 return -EINVAL;
128 }
129
130 ret = snd_soc_component_update_bits(component, TAS5720_DIGITAL_CTRL1_REG,
131 TAS5720_SAIF_FORMAT_MASK,
132 val: serial_format);
133 if (ret < 0) {
134 dev_err(component->dev, "error setting SAIF format: %d\n", ret);
135 return ret;
136 }
137
138 return 0;
139}
140
141static int tas5720_set_dai_tdm_slot(struct snd_soc_dai *dai,
142 unsigned int tx_mask, unsigned int rx_mask,
143 int slots, int slot_width)
144{
145 struct snd_soc_component *component = dai->component;
146 struct tas5720_data *tas5720 = snd_soc_component_get_drvdata(c: component);
147 unsigned int first_slot;
148 int ret;
149
150 if (!tx_mask) {
151 dev_err(component->dev, "tx masks must not be 0\n");
152 return -EINVAL;
153 }
154
155 /*
156 * Determine the first slot that is being requested. We will only
157 * use the first slot that is found since the TAS5720 is a mono
158 * amplifier.
159 */
160 first_slot = __ffs(tx_mask);
161
162 if (first_slot > 7) {
163 dev_err(component->dev, "slot selection out of bounds (%u)\n",
164 first_slot);
165 return -EINVAL;
166 }
167
168 /*
169 * Enable manual TDM slot selection (instead of I2C ID based).
170 * This is not applicable to TAS5720A-Q1.
171 */
172 switch (tas5720->devtype) {
173 case TAS5720A_Q1:
174 break;
175 default:
176 ret = snd_soc_component_update_bits(component, TAS5720_DIGITAL_CTRL1_REG,
177 TAS5720_TDM_CFG_SRC, TAS5720_TDM_CFG_SRC);
178 if (ret < 0)
179 goto error_snd_soc_component_update_bits;
180
181 /* Configure the TDM slot to process audio from */
182 ret = snd_soc_component_update_bits(component, TAS5720_DIGITAL_CTRL2_REG,
183 TAS5720_TDM_SLOT_SEL_MASK, val: first_slot);
184 if (ret < 0)
185 goto error_snd_soc_component_update_bits;
186 break;
187 }
188
189 /* Configure TDM slot width. This is only applicable to TAS5722. */
190 switch (tas5720->devtype) {
191 case TAS5722:
192 ret = snd_soc_component_update_bits(component, TAS5722_DIGITAL_CTRL2_REG,
193 TAS5722_TDM_SLOT_16B,
194 val: slot_width == 16 ?
195 TAS5722_TDM_SLOT_16B : 0);
196 if (ret < 0)
197 goto error_snd_soc_component_update_bits;
198 break;
199 default:
200 break;
201 }
202
203 return 0;
204
205error_snd_soc_component_update_bits:
206 dev_err(component->dev, "error configuring TDM mode: %d\n", ret);
207 return ret;
208}
209
210static int tas5720_mute_soc_component(struct snd_soc_component *component, int mute)
211{
212 struct tas5720_data *tas5720 = snd_soc_component_get_drvdata(c: component);
213 unsigned int reg, mask;
214 int ret;
215
216 switch (tas5720->devtype) {
217 case TAS5720A_Q1:
218 reg = TAS5720_Q1_VOLUME_CTRL_CFG_REG;
219 mask = TAS5720_Q1_MUTE;
220 break;
221 default:
222 reg = TAS5720_DIGITAL_CTRL2_REG;
223 mask = TAS5720_MUTE;
224 break;
225 }
226
227 ret = snd_soc_component_update_bits(component, reg, mask, val: mute ? mask : 0);
228 if (ret < 0) {
229 dev_err(component->dev, "error (un-)muting device: %d\n", ret);
230 return ret;
231 }
232
233 return 0;
234}
235
236static int tas5720_mute(struct snd_soc_dai *dai, int mute, int direction)
237{
238 return tas5720_mute_soc_component(component: dai->component, mute);
239}
240
241static void tas5720_fault_check_work(struct work_struct *work)
242{
243 struct tas5720_data *tas5720 = container_of(work, struct tas5720_data,
244 fault_check_work.work);
245 struct device *dev = tas5720->component->dev;
246 unsigned int curr_fault;
247 int ret;
248
249 ret = regmap_read(map: tas5720->regmap, TAS5720_FAULT_REG, val: &curr_fault);
250 if (ret < 0) {
251 dev_err(dev, "failed to read FAULT register: %d\n", ret);
252 goto out;
253 }
254
255 /* Check/handle all errors except SAIF clock errors */
256 curr_fault &= TAS5720_OCE | TAS5720_DCE | TAS5720_OTE;
257
258 /*
259 * Only flag errors once for a given occurrence. This is needed as
260 * the TAS5720 will take time clearing the fault condition internally
261 * during which we don't want to bombard the system with the same
262 * error message over and over.
263 */
264 if ((curr_fault & TAS5720_OCE) && !(tas5720->last_fault & TAS5720_OCE))
265 dev_crit(dev, "experienced an over current hardware fault\n");
266
267 if ((curr_fault & TAS5720_DCE) && !(tas5720->last_fault & TAS5720_DCE))
268 dev_crit(dev, "experienced a DC detection fault\n");
269
270 if ((curr_fault & TAS5720_OTE) && !(tas5720->last_fault & TAS5720_OTE))
271 dev_crit(dev, "experienced an over temperature fault\n");
272
273 /* Store current fault value so we can detect any changes next time */
274 tas5720->last_fault = curr_fault;
275
276 if (!curr_fault)
277 goto out;
278
279 /*
280 * Periodically toggle SDZ (shutdown bit) H->L->H to clear any latching
281 * faults as long as a fault condition persists. Always going through
282 * the full sequence no matter the first return value to minimizes
283 * chances for the device to end up in shutdown mode.
284 */
285 ret = regmap_write_bits(map: tas5720->regmap, TAS5720_POWER_CTRL_REG,
286 TAS5720_SDZ, val: 0);
287 if (ret < 0)
288 dev_err(dev, "failed to write POWER_CTRL register: %d\n", ret);
289
290 ret = regmap_write_bits(map: tas5720->regmap, TAS5720_POWER_CTRL_REG,
291 TAS5720_SDZ, TAS5720_SDZ);
292 if (ret < 0)
293 dev_err(dev, "failed to write POWER_CTRL register: %d\n", ret);
294
295out:
296 /* Schedule the next fault check at the specified interval */
297 schedule_delayed_work(dwork: &tas5720->fault_check_work,
298 delay: msecs_to_jiffies(TAS5720_FAULT_CHECK_INTERVAL));
299}
300
301static int tas5720_codec_probe(struct snd_soc_component *component)
302{
303 struct tas5720_data *tas5720 = snd_soc_component_get_drvdata(c: component);
304 unsigned int device_id, expected_device_id;
305 int ret;
306
307 tas5720->component = component;
308
309 ret = regulator_bulk_enable(ARRAY_SIZE(tas5720->supplies),
310 consumers: tas5720->supplies);
311 if (ret != 0) {
312 dev_err(component->dev, "failed to enable supplies: %d\n", ret);
313 return ret;
314 }
315
316 /*
317 * Take a liberal approach to checking the device ID to allow the
318 * driver to be used even if the device ID does not match, however
319 * issue a warning if there is a mismatch.
320 */
321 ret = regmap_read(map: tas5720->regmap, TAS5720_DEVICE_ID_REG, val: &device_id);
322 if (ret < 0) {
323 dev_err(component->dev, "failed to read device ID register: %d\n",
324 ret);
325 goto probe_fail;
326 }
327
328 switch (tas5720->devtype) {
329 case TAS5720:
330 expected_device_id = TAS5720_DEVICE_ID;
331 break;
332 case TAS5720A_Q1:
333 expected_device_id = TAS5720A_Q1_DEVICE_ID;
334 break;
335 case TAS5722:
336 expected_device_id = TAS5722_DEVICE_ID;
337 break;
338 default:
339 dev_err(component->dev, "unexpected private driver data\n");
340 ret = -EINVAL;
341 goto probe_fail;
342 }
343
344 if (device_id != expected_device_id)
345 dev_warn(component->dev, "wrong device ID. expected: %u read: %u\n",
346 expected_device_id, device_id);
347
348 /* Set device to mute */
349 ret = tas5720_mute_soc_component(component, mute: 1);
350 if (ret < 0)
351 goto error_snd_soc_component_update_bits;
352
353 /* Set Bit 7 in TAS5720_ANALOG_CTRL_REG to 1 for TAS5720A_Q1 */
354 switch (tas5720->devtype) {
355 case TAS5720A_Q1:
356 ret = snd_soc_component_update_bits(component, TAS5720_ANALOG_CTRL_REG,
357 TAS5720_Q1_RESERVED7_BIT,
358 TAS5720_Q1_RESERVED7_BIT);
359 break;
360 default:
361 break;
362 }
363 if (ret < 0)
364 goto error_snd_soc_component_update_bits;
365
366 /*
367 * Enter shutdown mode - our default when not playing audio - to
368 * minimize current consumption. On the TAS5720 there is no real down
369 * side doing so as all device registers are preserved and the wakeup
370 * of the codec is rather quick which we do using a dapm widget.
371 */
372 ret = snd_soc_component_update_bits(component, TAS5720_POWER_CTRL_REG,
373 TAS5720_SDZ, val: 0);
374 if (ret < 0)
375 goto error_snd_soc_component_update_bits;
376
377 INIT_DELAYED_WORK(&tas5720->fault_check_work, tas5720_fault_check_work);
378
379 return 0;
380
381error_snd_soc_component_update_bits:
382 dev_err(component->dev, "error configuring device registers: %d\n", ret);
383
384probe_fail:
385 regulator_bulk_disable(ARRAY_SIZE(tas5720->supplies),
386 consumers: tas5720->supplies);
387 return ret;
388}
389
390static void tas5720_codec_remove(struct snd_soc_component *component)
391{
392 struct tas5720_data *tas5720 = snd_soc_component_get_drvdata(c: component);
393 int ret;
394
395 cancel_delayed_work_sync(dwork: &tas5720->fault_check_work);
396
397 ret = regulator_bulk_disable(ARRAY_SIZE(tas5720->supplies),
398 consumers: tas5720->supplies);
399 if (ret < 0)
400 dev_err(component->dev, "failed to disable supplies: %d\n", ret);
401};
402
403static int tas5720_dac_event(struct snd_soc_dapm_widget *w,
404 struct snd_kcontrol *kcontrol, int event)
405{
406 struct snd_soc_component *component = snd_soc_dapm_to_component(dapm: w->dapm);
407 struct tas5720_data *tas5720 = snd_soc_component_get_drvdata(c: component);
408 int ret;
409
410 if (event & SND_SOC_DAPM_POST_PMU) {
411 /* Take TAS5720 out of shutdown mode */
412 ret = snd_soc_component_update_bits(component, TAS5720_POWER_CTRL_REG,
413 TAS5720_SDZ, TAS5720_SDZ);
414 if (ret < 0) {
415 dev_err(component->dev, "error waking component: %d\n", ret);
416 return ret;
417 }
418
419 /*
420 * Observe codec shutdown-to-active time. The datasheet only
421 * lists a nominal value however just use-it as-is without
422 * additional padding to minimize the delay introduced in
423 * starting to play audio (actually there is other setup done
424 * by the ASoC framework that will provide additional delays,
425 * so we should always be safe).
426 */
427 msleep(msecs: 25);
428
429 /* Turn on TAS5720 periodic fault checking/handling */
430 tas5720->last_fault = 0;
431 schedule_delayed_work(dwork: &tas5720->fault_check_work,
432 delay: msecs_to_jiffies(TAS5720_FAULT_CHECK_INTERVAL));
433 } else if (event & SND_SOC_DAPM_PRE_PMD) {
434 /* Disable TAS5720 periodic fault checking/handling */
435 cancel_delayed_work_sync(dwork: &tas5720->fault_check_work);
436
437 /* Place TAS5720 in shutdown mode to minimize current draw */
438 ret = snd_soc_component_update_bits(component, TAS5720_POWER_CTRL_REG,
439 TAS5720_SDZ, val: 0);
440 if (ret < 0) {
441 dev_err(component->dev, "error shutting down component: %d\n",
442 ret);
443 return ret;
444 }
445 }
446
447 return 0;
448}
449
450#ifdef CONFIG_PM
451static int tas5720_suspend(struct snd_soc_component *component)
452{
453 struct tas5720_data *tas5720 = snd_soc_component_get_drvdata(c: component);
454 int ret;
455
456 regcache_cache_only(map: tas5720->regmap, enable: true);
457 regcache_mark_dirty(map: tas5720->regmap);
458
459 ret = regulator_bulk_disable(ARRAY_SIZE(tas5720->supplies),
460 consumers: tas5720->supplies);
461 if (ret < 0)
462 dev_err(component->dev, "failed to disable supplies: %d\n", ret);
463
464 return ret;
465}
466
467static int tas5720_resume(struct snd_soc_component *component)
468{
469 struct tas5720_data *tas5720 = snd_soc_component_get_drvdata(c: component);
470 int ret;
471
472 ret = regulator_bulk_enable(ARRAY_SIZE(tas5720->supplies),
473 consumers: tas5720->supplies);
474 if (ret < 0) {
475 dev_err(component->dev, "failed to enable supplies: %d\n", ret);
476 return ret;
477 }
478
479 regcache_cache_only(map: tas5720->regmap, enable: false);
480
481 ret = regcache_sync(map: tas5720->regmap);
482 if (ret < 0) {
483 dev_err(component->dev, "failed to sync regcache: %d\n", ret);
484 return ret;
485 }
486
487 return 0;
488}
489#else
490#define tas5720_suspend NULL
491#define tas5720_resume NULL
492#endif
493
494static bool tas5720_is_volatile_reg(struct device *dev, unsigned int reg)
495{
496 switch (reg) {
497 case TAS5720_DEVICE_ID_REG:
498 case TAS5720_FAULT_REG:
499 return true;
500 default:
501 return false;
502 }
503}
504
505static const struct regmap_config tas5720_regmap_config = {
506 .reg_bits = 8,
507 .val_bits = 8,
508
509 .max_register = TAS5720_MAX_REG,
510 .cache_type = REGCACHE_RBTREE,
511 .volatile_reg = tas5720_is_volatile_reg,
512};
513
514static const struct regmap_config tas5720a_q1_regmap_config = {
515 .reg_bits = 8,
516 .val_bits = 8,
517
518 .max_register = TAS5720_MAX_REG,
519 .cache_type = REGCACHE_RBTREE,
520 .volatile_reg = tas5720_is_volatile_reg,
521};
522
523static const struct regmap_config tas5722_regmap_config = {
524 .reg_bits = 8,
525 .val_bits = 8,
526
527 .max_register = TAS5722_MAX_REG,
528 .cache_type = REGCACHE_RBTREE,
529 .volatile_reg = tas5720_is_volatile_reg,
530};
531
532/*
533 * DAC analog gain. There are four discrete values to select from, ranging
534 * from 19.2 dB to 26.3dB.
535 */
536static const DECLARE_TLV_DB_RANGE(dac_analog_tlv,
537 0x0, 0x0, TLV_DB_SCALE_ITEM(1920, 0, 0),
538 0x1, 0x1, TLV_DB_SCALE_ITEM(2070, 0, 0),
539 0x2, 0x2, TLV_DB_SCALE_ITEM(2350, 0, 0),
540 0x3, 0x3, TLV_DB_SCALE_ITEM(2630, 0, 0),
541);
542
543/*
544 * DAC analog gain for TAS5720A-Q1. There are three discrete values to select from, ranging
545 * from 19.2 dB to 25.0dB.
546 */
547static const DECLARE_TLV_DB_RANGE(dac_analog_tlv_a_q1,
548 0x0, 0x0, TLV_DB_SCALE_ITEM(1920, 0, 0),
549 0x1, 0x1, TLV_DB_SCALE_ITEM(2260, 0, 0),
550 0x2, 0x2, TLV_DB_SCALE_ITEM(2500, 0, 0),
551);
552
553/*
554 * DAC digital volumes. From -103.5 to 24 dB in 0.5 dB or 0.25 dB steps
555 * depending on the device. Note that setting the gain below -100 dB
556 * (register value <0x7) is effectively a MUTE as per device datasheet.
557 *
558 * Note that for the TAS5722 the digital volume controls are actually split
559 * over two registers, so we need custom getters/setters for access.
560 */
561static DECLARE_TLV_DB_SCALE(tas5720_dac_tlv, -10350, 50, 0);
562static DECLARE_TLV_DB_SCALE(tas5722_dac_tlv, -10350, 25, 0);
563
564static int tas5722_volume_get(struct snd_kcontrol *kcontrol,
565 struct snd_ctl_elem_value *ucontrol)
566{
567 struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
568 unsigned int val;
569
570 val = snd_soc_component_read(component, TAS5720_VOLUME_CTRL_REG);
571 ucontrol->value.integer.value[0] = val << 1;
572
573 val = snd_soc_component_read(component, TAS5722_DIGITAL_CTRL2_REG);
574 ucontrol->value.integer.value[0] |= val & TAS5722_VOL_CONTROL_LSB;
575
576 return 0;
577}
578
579static int tas5722_volume_set(struct snd_kcontrol *kcontrol,
580 struct snd_ctl_elem_value *ucontrol)
581{
582 struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
583 unsigned int sel = ucontrol->value.integer.value[0];
584
585 snd_soc_component_write(component, TAS5720_VOLUME_CTRL_REG, val: sel >> 1);
586 snd_soc_component_update_bits(component, TAS5722_DIGITAL_CTRL2_REG,
587 TAS5722_VOL_CONTROL_LSB, val: sel);
588
589 return 0;
590}
591
592static const struct snd_kcontrol_new tas5720_snd_controls[] = {
593 SOC_SINGLE_TLV("Speaker Driver Playback Volume",
594 TAS5720_VOLUME_CTRL_REG, 0, 0xff, 0, tas5720_dac_tlv),
595 SOC_SINGLE_TLV("Speaker Driver Analog Gain", TAS5720_ANALOG_CTRL_REG,
596 TAS5720_ANALOG_GAIN_SHIFT, 3, 0, dac_analog_tlv),
597};
598
599static const struct snd_kcontrol_new tas5720a_q1_snd_controls[] = {
600 SOC_DOUBLE_R_TLV("Speaker Driver Playback Volume",
601 TAS5720_Q1_VOLUME_CTRL_LEFT_REG,
602 TAS5720_Q1_VOLUME_CTRL_RIGHT_REG,
603 0, 0xff, 0, tas5720_dac_tlv),
604 SOC_SINGLE_TLV("Speaker Driver Analog Gain", TAS5720_ANALOG_CTRL_REG,
605 TAS5720_ANALOG_GAIN_SHIFT, 3, 0, dac_analog_tlv_a_q1),
606};
607
608static const struct snd_kcontrol_new tas5722_snd_controls[] = {
609 SOC_SINGLE_EXT_TLV("Speaker Driver Playback Volume",
610 0, 0, 511, 0,
611 tas5722_volume_get, tas5722_volume_set,
612 tas5722_dac_tlv),
613 SOC_SINGLE_TLV("Speaker Driver Analog Gain", TAS5720_ANALOG_CTRL_REG,
614 TAS5720_ANALOG_GAIN_SHIFT, 3, 0, dac_analog_tlv),
615};
616
617static const struct snd_soc_dapm_widget tas5720_dapm_widgets[] = {
618 SND_SOC_DAPM_AIF_IN("DAC IN", "Playback", 0, SND_SOC_NOPM, 0, 0),
619 SND_SOC_DAPM_DAC_E("DAC", NULL, SND_SOC_NOPM, 0, 0, tas5720_dac_event,
620 SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD),
621 SND_SOC_DAPM_OUTPUT("OUT")
622};
623
624static const struct snd_soc_dapm_route tas5720_audio_map[] = {
625 { "DAC", NULL, "DAC IN" },
626 { "OUT", NULL, "DAC" },
627};
628
629static const struct snd_soc_component_driver soc_component_dev_tas5720 = {
630 .probe = tas5720_codec_probe,
631 .remove = tas5720_codec_remove,
632 .suspend = tas5720_suspend,
633 .resume = tas5720_resume,
634 .controls = tas5720_snd_controls,
635 .num_controls = ARRAY_SIZE(tas5720_snd_controls),
636 .dapm_widgets = tas5720_dapm_widgets,
637 .num_dapm_widgets = ARRAY_SIZE(tas5720_dapm_widgets),
638 .dapm_routes = tas5720_audio_map,
639 .num_dapm_routes = ARRAY_SIZE(tas5720_audio_map),
640 .idle_bias_on = 1,
641 .use_pmdown_time = 1,
642 .endianness = 1,
643};
644
645static const struct snd_soc_component_driver soc_component_dev_tas5720_a_q1 = {
646 .probe = tas5720_codec_probe,
647 .remove = tas5720_codec_remove,
648 .suspend = tas5720_suspend,
649 .resume = tas5720_resume,
650 .controls = tas5720a_q1_snd_controls,
651 .num_controls = ARRAY_SIZE(tas5720a_q1_snd_controls),
652 .dapm_widgets = tas5720_dapm_widgets,
653 .num_dapm_widgets = ARRAY_SIZE(tas5720_dapm_widgets),
654 .dapm_routes = tas5720_audio_map,
655 .num_dapm_routes = ARRAY_SIZE(tas5720_audio_map),
656 .idle_bias_on = 1,
657 .use_pmdown_time = 1,
658 .endianness = 1,
659};
660
661static const struct snd_soc_component_driver soc_component_dev_tas5722 = {
662 .probe = tas5720_codec_probe,
663 .remove = tas5720_codec_remove,
664 .suspend = tas5720_suspend,
665 .resume = tas5720_resume,
666 .controls = tas5722_snd_controls,
667 .num_controls = ARRAY_SIZE(tas5722_snd_controls),
668 .dapm_widgets = tas5720_dapm_widgets,
669 .num_dapm_widgets = ARRAY_SIZE(tas5720_dapm_widgets),
670 .dapm_routes = tas5720_audio_map,
671 .num_dapm_routes = ARRAY_SIZE(tas5720_audio_map),
672 .idle_bias_on = 1,
673 .use_pmdown_time = 1,
674 .endianness = 1,
675};
676
677/* PCM rates supported by the TAS5720 driver */
678#define TAS5720_RATES (SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 |\
679 SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000)
680
681/* Formats supported by TAS5720 driver */
682#define TAS5720_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S18_3LE |\
683 SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_LE)
684
685static const struct snd_soc_dai_ops tas5720_speaker_dai_ops = {
686 .hw_params = tas5720_hw_params,
687 .set_fmt = tas5720_set_dai_fmt,
688 .set_tdm_slot = tas5720_set_dai_tdm_slot,
689 .mute_stream = tas5720_mute,
690 .no_capture_mute = 1,
691};
692
693/*
694 * TAS5720 DAI structure
695 *
696 * Note that were are advertising .playback.channels_max = 2 despite this being
697 * a mono amplifier. The reason for that is that some serial ports such as TI's
698 * McASP module have a minimum number of channels (2) that they can output.
699 * Advertising more channels than we have will allow us to interface with such
700 * a serial port without really any negative side effects as the TAS5720 will
701 * simply ignore any extra channel(s) asides from the one channel that is
702 * configured to be played back.
703 */
704static struct snd_soc_dai_driver tas5720_dai[] = {
705 {
706 .name = "tas5720-amplifier",
707 .playback = {
708 .stream_name = "Playback",
709 .channels_min = 1,
710 .channels_max = 2,
711 .rates = TAS5720_RATES,
712 .formats = TAS5720_FORMATS,
713 },
714 .ops = &tas5720_speaker_dai_ops,
715 },
716};
717
718static const struct i2c_device_id tas5720_id[] = {
719 { "tas5720", TAS5720 },
720 { "tas5720a-q1", TAS5720A_Q1 },
721 { "tas5722", TAS5722 },
722 { }
723};
724MODULE_DEVICE_TABLE(i2c, tas5720_id);
725
726static int tas5720_probe(struct i2c_client *client)
727{
728 struct device *dev = &client->dev;
729 struct tas5720_data *data;
730 const struct regmap_config *regmap_config;
731 int ret;
732 int i;
733
734 data = devm_kzalloc(dev, size: sizeof(*data), GFP_KERNEL);
735 if (!data)
736 return -ENOMEM;
737
738 data->devtype = (uintptr_t)i2c_get_match_data(client);
739
740 switch (data->devtype) {
741 case TAS5720:
742 regmap_config = &tas5720_regmap_config;
743 break;
744 case TAS5720A_Q1:
745 regmap_config = &tas5720a_q1_regmap_config;
746 break;
747 case TAS5722:
748 regmap_config = &tas5722_regmap_config;
749 break;
750 default:
751 dev_err(dev, "unexpected private driver data\n");
752 return -EINVAL;
753 }
754 data->regmap = devm_regmap_init_i2c(client, regmap_config);
755 if (IS_ERR(ptr: data->regmap)) {
756 ret = PTR_ERR(ptr: data->regmap);
757 dev_err(dev, "failed to allocate register map: %d\n", ret);
758 return ret;
759 }
760
761 for (i = 0; i < ARRAY_SIZE(data->supplies); i++)
762 data->supplies[i].supply = tas5720_supply_names[i];
763
764 ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(data->supplies),
765 consumers: data->supplies);
766 if (ret != 0) {
767 dev_err(dev, "failed to request supplies: %d\n", ret);
768 return ret;
769 }
770
771 dev_set_drvdata(dev, data);
772
773 switch (data->devtype) {
774 case TAS5720:
775 ret = devm_snd_soc_register_component(dev: &client->dev,
776 component_driver: &soc_component_dev_tas5720,
777 dai_drv: tas5720_dai,
778 ARRAY_SIZE(tas5720_dai));
779 break;
780 case TAS5720A_Q1:
781 ret = devm_snd_soc_register_component(dev: &client->dev,
782 component_driver: &soc_component_dev_tas5720_a_q1,
783 dai_drv: tas5720_dai,
784 ARRAY_SIZE(tas5720_dai));
785 break;
786 case TAS5722:
787 ret = devm_snd_soc_register_component(dev: &client->dev,
788 component_driver: &soc_component_dev_tas5722,
789 dai_drv: tas5720_dai,
790 ARRAY_SIZE(tas5720_dai));
791 break;
792 default:
793 dev_err(dev, "unexpected private driver data\n");
794 return -EINVAL;
795 }
796 if (ret < 0) {
797 dev_err(dev, "failed to register component: %d\n", ret);
798 return ret;
799 }
800
801 return 0;
802}
803
804#if IS_ENABLED(CONFIG_OF)
805static const struct of_device_id tas5720_of_match[] = {
806 { .compatible = "ti,tas5720", },
807 { .compatible = "ti,tas5720a-q1", },
808 { .compatible = "ti,tas5722", },
809 { },
810};
811MODULE_DEVICE_TABLE(of, tas5720_of_match);
812#endif
813
814static struct i2c_driver tas5720_i2c_driver = {
815 .driver = {
816 .name = "tas5720",
817 .of_match_table = of_match_ptr(tas5720_of_match),
818 },
819 .probe = tas5720_probe,
820 .id_table = tas5720_id,
821};
822
823module_i2c_driver(tas5720_i2c_driver);
824
825MODULE_AUTHOR("Andreas Dannenberg <dannenberg@ti.com>");
826MODULE_DESCRIPTION("TAS5720 Audio amplifier driver");
827MODULE_LICENSE("GPL");
828

source code of linux/sound/soc/codecs/tas5720.c