tas5720.c

  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(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, 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				  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(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, 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						    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(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, 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(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(tas5720->regmap, TAS5720_FAULT_REG, &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(tas5720->regmap, TAS5720_POWER_CTRL_REG,
286				TAS5720_SDZ, 0);
287	if (ret < 0)
288		dev_err(dev, "failed to write POWER_CTRL register: %d\n", ret);
289
290	ret = regmap_write_bits(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(&tas5720->fault_check_work,
298			      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(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				    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(tas5720->regmap, TAS5720_DEVICE_ID_REG, &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, 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, 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			       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(component);
393	int ret;
394
395	cancel_delayed_work_sync(&tas5720->fault_check_work);
396
397	ret = regulator_bulk_disable(ARRAY_SIZE(tas5720->supplies),
398				     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(w->dapm);
407	struct tas5720_data *tas5720 = snd_soc_component_get_drvdata(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(25);
428
429		/* Turn on TAS5720 periodic fault checking/handling */
430		tas5720->last_fault = 0;
431		schedule_delayed_work(&tas5720->fault_check_work,
432				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(&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, 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(component);
454	int ret;
455
456	regcache_cache_only(tas5720->regmap, true);
457	regcache_mark_dirty(tas5720->regmap);
458
459	ret = regulator_bulk_disable(ARRAY_SIZE(tas5720->supplies),
460				     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(component);
470	int ret;
471
472	ret = regulator_bulk_enable(ARRAY_SIZE(tas5720->supplies),
473				    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(tas5720->regmap, false);
480
481	ret = regcache_sync(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_kcontrol_chip(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_kcontrol_chip(kcontrol);
583	unsigned int sel = ucontrol->value.integer.value[0];
584
585	snd_soc_component_write(component, TAS5720_VOLUME_CTRL_REG, sel >> 1);
586	snd_soc_component_update_bits(component, TAS5722_DIGITAL_CTRL2_REG,
587				      TAS5722_VOL_CONTROL_LSB, 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, 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(data->regmap)) {
756		ret = PTR_ERR(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				      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(&client->dev,
776					&soc_component_dev_tas5720,
777					tas5720_dai,
778					ARRAY_SIZE(tas5720_dai));
779		break;
780	case TAS5720A_Q1:
781		ret = devm_snd_soc_register_component(&client->dev,
782					&soc_component_dev_tas5720_a_q1,
783					tas5720_dai,
784					ARRAY_SIZE(tas5720_dai));
785		break;
786	case TAS5722:
787		ret = devm_snd_soc_register_component(&client->dev,
788					&soc_component_dev_tas5722,
789					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");