tas2552.c

  1// SPDX-License-Identifier: GPL-2.0-only
  2/*
  3 * tas2552.c - ALSA SoC Texas Instruments TAS2552 Mono Audio Amplifier
  4 *
  5 * Copyright (C) 2014 - 2024 Texas Instruments Incorporated -
  6 *	https://www.ti.com
  7 *
  8 * Author: Dan Murphy <dmurphy@ti.com>
  9 */
 10
 11#include <linux/module.h>
 12#include <linux/errno.h>
 13#include <linux/device.h>
 14#include <linux/i2c.h>
 15#include <linux/pm_runtime.h>
 16#include <linux/regmap.h>
 17#include <linux/slab.h>
 18
 19#include <linux/gpio/consumer.h>
 20#include <linux/regulator/consumer.h>
 21
 22#include <sound/pcm.h>
 23#include <sound/pcm_params.h>
 24#include <sound/soc.h>
 25#include <sound/soc-dapm.h>
 26#include <sound/tlv.h>
 27#include <sound/tas2552-plat.h>
 28#include <dt-bindings/sound/tas2552.h>
 29
 30#include "tas2552.h"
 31
 32static const struct reg_default tas2552_reg_defs[] = {
 33	{TAS2552_CFG_1, 0x22},
 34	{TAS2552_CFG_3, 0x80},
 35	{TAS2552_DOUT, 0x00},
 36	{TAS2552_OUTPUT_DATA, 0xc0},
 37	{TAS2552_PDM_CFG, 0x01},
 38	{TAS2552_PGA_GAIN, 0x00},
 39	{TAS2552_BOOST_APT_CTRL, 0x0f},
 40	{TAS2552_RESERVED_0D, 0xbe},
 41	{TAS2552_LIMIT_RATE_HYS, 0x08},
 42	{TAS2552_CFG_2, 0xef},
 43	{TAS2552_SER_CTRL_1, 0x00},
 44	{TAS2552_SER_CTRL_2, 0x00},
 45	{TAS2552_PLL_CTRL_1, 0x10},
 46	{TAS2552_PLL_CTRL_2, 0x00},
 47	{TAS2552_PLL_CTRL_3, 0x00},
 48	{TAS2552_BTIP, 0x8f},
 49	{TAS2552_BTS_CTRL, 0x80},
 50	{TAS2552_LIMIT_RELEASE, 0x04},
 51	{TAS2552_LIMIT_INT_COUNT, 0x00},
 52	{TAS2552_EDGE_RATE_CTRL, 0x40},
 53	{TAS2552_VBAT_DATA, 0x00},
 54};
 55
 56#define TAS2552_NUM_SUPPLIES	3
 57static const char *tas2552_supply_names[TAS2552_NUM_SUPPLIES] = {
 58	"vbat",		/* vbat voltage */
 59	"iovdd",	/* I/O Voltage */
 60	"avdd",		/* Analog DAC Voltage */
 61};
 62
 63struct tas2552_data {
 64	struct snd_soc_component *component;
 65	struct regmap *regmap;
 66	struct i2c_client *tas2552_client;
 67	struct regulator_bulk_data supplies[TAS2552_NUM_SUPPLIES];
 68	struct gpio_desc *enable_gpio;
 69	unsigned char regs[TAS2552_VBAT_DATA];
 70	unsigned int pll_clkin;
 71	int pll_clk_id;
 72	unsigned int pdm_clk;
 73	int pdm_clk_id;
 74
 75	unsigned int dai_fmt;
 76	unsigned int tdm_delay;
 77};
 78
 79static int tas2552_post_event(struct snd_soc_dapm_widget *w,
 80			      struct snd_kcontrol *kcontrol, int event)
 81{
 82	struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm);
 83
 84	switch (event) {
 85	case SND_SOC_DAPM_POST_PMU:
 86		snd_soc_component_write(component, TAS2552_RESERVED_0D, 0xc0);
 87		snd_soc_component_update_bits(component, TAS2552_LIMIT_RATE_HYS, (1 << 5),
 88				    (1 << 5));
 89		snd_soc_component_update_bits(component, TAS2552_CFG_2, 1, 0);
 90		snd_soc_component_update_bits(component, TAS2552_CFG_1, TAS2552_SWS, 0);
 91		break;
 92	case SND_SOC_DAPM_POST_PMD:
 93		snd_soc_component_update_bits(component, TAS2552_CFG_1, TAS2552_SWS,
 94				    TAS2552_SWS);
 95		snd_soc_component_update_bits(component, TAS2552_CFG_2, 1, 1);
 96		snd_soc_component_update_bits(component, TAS2552_LIMIT_RATE_HYS, (1 << 5), 0);
 97		snd_soc_component_write(component, TAS2552_RESERVED_0D, 0xbe);
 98		break;
 99	}
100	return 0;
101}
102
103/* Input mux controls */
104static const char * const tas2552_input_texts[] = {
105	"Digital", "Analog" };
106static SOC_ENUM_SINGLE_DECL(tas2552_input_mux_enum, TAS2552_CFG_3, 7,
107			    tas2552_input_texts);
108
109static const struct snd_kcontrol_new tas2552_input_mux_control =
110	SOC_DAPM_ENUM("Route", tas2552_input_mux_enum);
111
112static const struct snd_soc_dapm_widget tas2552_dapm_widgets[] =
113{
114	SND_SOC_DAPM_INPUT("IN"),
115
116	/* MUX Controls */
117	SND_SOC_DAPM_MUX("Input selection", SND_SOC_NOPM, 0, 0,
118			 &tas2552_input_mux_control),
119
120	SND_SOC_DAPM_AIF_IN("DAC IN", "DAC Playback", 0, SND_SOC_NOPM, 0, 0),
121	SND_SOC_DAPM_AIF_OUT("ASI OUT", "DAC Capture", 0, SND_SOC_NOPM, 0, 0),
122	SND_SOC_DAPM_DAC("DAC", NULL, SND_SOC_NOPM, 0, 0),
123	SND_SOC_DAPM_OUT_DRV("ClassD", TAS2552_CFG_2, 7, 0, NULL, 0),
124	SND_SOC_DAPM_SUPPLY("PLL", TAS2552_CFG_2, 3, 0, NULL, 0),
125	SND_SOC_DAPM_POST("Post Event", tas2552_post_event),
126
127	SND_SOC_DAPM_OUTPUT("OUT"),
128	SND_SOC_DAPM_INPUT("DMIC")
129};
130
131static const struct snd_soc_dapm_route tas2552_audio_map[] = {
132	{"DAC", NULL, "DAC IN"},
133	{"Input selection", "Digital", "DAC"},
134	{"Input selection", "Analog", "IN"},
135	{"ClassD", NULL, "Input selection"},
136	{"OUT", NULL, "ClassD"},
137	{"ClassD", NULL, "PLL"},
138	{"ASI OUT", NULL, "DMIC"}
139};
140
141static void tas2552_sw_shutdown(struct tas2552_data *tas2552, int sw_shutdown)
142{
143	u8 cfg1_reg = 0;
144
145	if (!tas2552->component)
146		return;
147
148	if (sw_shutdown)
149		cfg1_reg = TAS2552_SWS;
150
151	snd_soc_component_update_bits(tas2552->component, TAS2552_CFG_1, TAS2552_SWS,
152			    cfg1_reg);
153}
154
155static int tas2552_setup_pll(struct snd_soc_component *component,
156			     struct snd_pcm_hw_params *params)
157{
158	struct tas2552_data *tas2552 = dev_get_drvdata(component->dev);
159	bool bypass_pll = false;
160	unsigned int pll_clk = params_rate(params) * 512;
161	unsigned int pll_clkin = tas2552->pll_clkin;
162	u8 pll_enable;
163
164	if (!pll_clkin) {
165		if (tas2552->pll_clk_id != TAS2552_PLL_CLKIN_BCLK)
166			return -EINVAL;
167
168		pll_clkin = snd_soc_params_to_bclk(params);
169		pll_clkin += tas2552->tdm_delay;
170	}
171
172	pll_enable = snd_soc_component_read(component, TAS2552_CFG_2) & TAS2552_PLL_ENABLE;
173	snd_soc_component_update_bits(component, TAS2552_CFG_2, TAS2552_PLL_ENABLE, 0);
174
175	if (pll_clkin == pll_clk)
176		bypass_pll = true;
177
178	if (bypass_pll) {
179		/* By pass the PLL configuration */
180		snd_soc_component_update_bits(component, TAS2552_PLL_CTRL_2,
181				    TAS2552_PLL_BYPASS, TAS2552_PLL_BYPASS);
182	} else {
183		/* Fill in the PLL control registers for J & D
184		 * pll_clk = (.5 * pll_clkin * J.D) / 2^p
185		 * Need to fill in J and D here based on incoming freq
186		 */
187		unsigned int d, q, t;
188		u8 j;
189		u8 pll_sel = (tas2552->pll_clk_id << 3) & TAS2552_PLL_SRC_MASK;
190		u8 p = snd_soc_component_read(component, TAS2552_PLL_CTRL_1);
191
192		p = (p >> 7);
193
194recalc:
195		t = (pll_clk * 2) << p;
196		j = t / pll_clkin;
197		d = t % pll_clkin;
198		t = pll_clkin / 10000;
199		q = d / (t + 1);
200		d = q + ((9999 - pll_clkin % 10000) * (d / t - q)) / 10000;
201
202		if (d && (pll_clkin < 512000 || pll_clkin > 9200000)) {
203			if (tas2552->pll_clk_id == TAS2552_PLL_CLKIN_BCLK) {
204				pll_clkin = 1800000;
205				pll_sel = (TAS2552_PLL_CLKIN_1_8_FIXED << 3) &
206							TAS2552_PLL_SRC_MASK;
207			} else {
208				pll_clkin = snd_soc_params_to_bclk(params);
209				pll_clkin += tas2552->tdm_delay;
210				pll_sel = (TAS2552_PLL_CLKIN_BCLK << 3) &
211							TAS2552_PLL_SRC_MASK;
212			}
213			goto recalc;
214		}
215
216		snd_soc_component_update_bits(component, TAS2552_CFG_1, TAS2552_PLL_SRC_MASK,
217				    pll_sel);
218
219		snd_soc_component_update_bits(component, TAS2552_PLL_CTRL_1,
220				    TAS2552_PLL_J_MASK, j);
221		/* Will clear the PLL_BYPASS bit */
222		snd_soc_component_write(component, TAS2552_PLL_CTRL_2,
223			      TAS2552_PLL_D_UPPER(d));
224		snd_soc_component_write(component, TAS2552_PLL_CTRL_3,
225			      TAS2552_PLL_D_LOWER(d));
226	}
227
228	/* Restore PLL status */
229	snd_soc_component_update_bits(component, TAS2552_CFG_2, TAS2552_PLL_ENABLE,
230			    pll_enable);
231
232	return 0;
233}
234
235static int tas2552_hw_params(struct snd_pcm_substream *substream,
236			     struct snd_pcm_hw_params *params,
237			     struct snd_soc_dai *dai)
238{
239	struct snd_soc_component *component = dai->component;
240	struct tas2552_data *tas2552 = dev_get_drvdata(component->dev);
241	int cpf;
242	u8 ser_ctrl1_reg, wclk_rate;
243
244	switch (params_width(params)) {
245	case 16:
246		ser_ctrl1_reg = TAS2552_WORDLENGTH_16BIT;
247		cpf = 32 + tas2552->tdm_delay;
248		break;
249	case 20:
250		ser_ctrl1_reg = TAS2552_WORDLENGTH_20BIT;
251		cpf = 64 + tas2552->tdm_delay;
252		break;
253	case 24:
254		ser_ctrl1_reg = TAS2552_WORDLENGTH_24BIT;
255		cpf = 64 + tas2552->tdm_delay;
256		break;
257	case 32:
258		ser_ctrl1_reg = TAS2552_WORDLENGTH_32BIT;
259		cpf = 64 + tas2552->tdm_delay;
260		break;
261	default:
262		dev_err(component->dev, "Not supported sample size: %d\n",
263			params_width(params));
264		return -EINVAL;
265	}
266
267	if (cpf <= 32)
268		ser_ctrl1_reg |= TAS2552_CLKSPERFRAME_32;
269	else if (cpf <= 64)
270		ser_ctrl1_reg |= TAS2552_CLKSPERFRAME_64;
271	else if (cpf <= 128)
272		ser_ctrl1_reg |= TAS2552_CLKSPERFRAME_128;
273	else
274		ser_ctrl1_reg |= TAS2552_CLKSPERFRAME_256;
275
276	snd_soc_component_update_bits(component, TAS2552_SER_CTRL_1,
277			    TAS2552_WORDLENGTH_MASK | TAS2552_CLKSPERFRAME_MASK,
278			    ser_ctrl1_reg);
279
280	switch (params_rate(params)) {
281	case 8000:
282		wclk_rate = TAS2552_WCLK_FREQ_8KHZ;
283		break;
284	case 11025:
285	case 12000:
286		wclk_rate = TAS2552_WCLK_FREQ_11_12KHZ;
287		break;
288	case 16000:
289		wclk_rate = TAS2552_WCLK_FREQ_16KHZ;
290		break;
291	case 22050:
292	case 24000:
293		wclk_rate = TAS2552_WCLK_FREQ_22_24KHZ;
294		break;
295	case 32000:
296		wclk_rate = TAS2552_WCLK_FREQ_32KHZ;
297		break;
298	case 44100:
299	case 48000:
300		wclk_rate = TAS2552_WCLK_FREQ_44_48KHZ;
301		break;
302	case 88200:
303	case 96000:
304		wclk_rate = TAS2552_WCLK_FREQ_88_96KHZ;
305		break;
306	case 176400:
307	case 192000:
308		wclk_rate = TAS2552_WCLK_FREQ_176_192KHZ;
309		break;
310	default:
311		dev_err(component->dev, "Not supported sample rate: %d\n",
312			params_rate(params));
313		return -EINVAL;
314	}
315
316	snd_soc_component_update_bits(component, TAS2552_CFG_3, TAS2552_WCLK_FREQ_MASK,
317			    wclk_rate);
318
319	return tas2552_setup_pll(component, params);
320}
321
322#define TAS2552_DAI_FMT_MASK	(TAS2552_BCLKDIR | \
323				 TAS2552_WCLKDIR | \
324				 TAS2552_DATAFORMAT_MASK)
325static int tas2552_prepare(struct snd_pcm_substream *substream,
326			   struct snd_soc_dai *dai)
327{
328	struct snd_soc_component *component = dai->component;
329	struct tas2552_data *tas2552 = snd_soc_component_get_drvdata(component);
330	int delay = 0;
331
332	/* TDM slot selection only valid in DSP_A/_B mode */
333	if (tas2552->dai_fmt == SND_SOC_DAIFMT_DSP_A)
334		delay += (tas2552->tdm_delay + 1);
335	else if (tas2552->dai_fmt == SND_SOC_DAIFMT_DSP_B)
336		delay += tas2552->tdm_delay;
337
338	/* Configure data delay */
339	snd_soc_component_write(component, TAS2552_SER_CTRL_2, delay);
340
341	return 0;
342}
343
344static int tas2552_set_dai_fmt(struct snd_soc_dai *dai, unsigned int fmt)
345{
346	struct snd_soc_component *component = dai->component;
347	struct tas2552_data *tas2552 = dev_get_drvdata(component->dev);
348	u8 serial_format;
349
350	switch (fmt & SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK) {
351	case SND_SOC_DAIFMT_CBC_CFC:
352		serial_format = 0x00;
353		break;
354	case SND_SOC_DAIFMT_CBC_CFP:
355		serial_format = TAS2552_WCLKDIR;
356		break;
357	case SND_SOC_DAIFMT_CBP_CFC:
358		serial_format = TAS2552_BCLKDIR;
359		break;
360	case SND_SOC_DAIFMT_CBP_CFP:
361		serial_format = (TAS2552_BCLKDIR | TAS2552_WCLKDIR);
362		break;
363	default:
364		dev_vdbg(component->dev, "DAI Format master is not found\n");
365		return -EINVAL;
366	}
367
368	switch (fmt & (SND_SOC_DAIFMT_FORMAT_MASK |
369		       SND_SOC_DAIFMT_INV_MASK)) {
370	case (SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF):
371		break;
372	case (SND_SOC_DAIFMT_DSP_A | SND_SOC_DAIFMT_IB_NF):
373	case (SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_IB_NF):
374		serial_format |= TAS2552_DATAFORMAT_DSP;
375		break;
376	case (SND_SOC_DAIFMT_RIGHT_J | SND_SOC_DAIFMT_NB_NF):
377		serial_format |= TAS2552_DATAFORMAT_RIGHT_J;
378		break;
379	case (SND_SOC_DAIFMT_LEFT_J | SND_SOC_DAIFMT_NB_NF):
380		serial_format |= TAS2552_DATAFORMAT_LEFT_J;
381		break;
382	default:
383		dev_vdbg(component->dev, "DAI Format is not found\n");
384		return -EINVAL;
385	}
386	tas2552->dai_fmt = fmt & SND_SOC_DAIFMT_FORMAT_MASK;
387
388	snd_soc_component_update_bits(component, TAS2552_SER_CTRL_1, TAS2552_DAI_FMT_MASK,
389			    serial_format);
390	return 0;
391}
392
393static int tas2552_set_dai_sysclk(struct snd_soc_dai *dai, int clk_id,
394				  unsigned int freq, int dir)
395{
396	struct snd_soc_component *component = dai->component;
397	struct tas2552_data *tas2552 = dev_get_drvdata(component->dev);
398	u8 reg, mask, val;
399
400	switch (clk_id) {
401	case TAS2552_PLL_CLKIN_MCLK:
402	case TAS2552_PLL_CLKIN_IVCLKIN:
403		if (freq < 512000 || freq > 24576000) {
404			/* out of range PLL_CLKIN, fall back to use BCLK */
405			dev_warn(component->dev, "Out of range PLL_CLKIN: %u\n",
406				 freq);
407			clk_id = TAS2552_PLL_CLKIN_BCLK;
408			freq = 0;
409		}
410		fallthrough;
411	case TAS2552_PLL_CLKIN_BCLK:
412	case TAS2552_PLL_CLKIN_1_8_FIXED:
413		mask = TAS2552_PLL_SRC_MASK;
414		val = (clk_id << 3) & mask; /* bit 4:5 in the register */
415		reg = TAS2552_CFG_1;
416		tas2552->pll_clk_id = clk_id;
417		tas2552->pll_clkin = freq;
418		break;
419	case TAS2552_PDM_CLK_PLL:
420	case TAS2552_PDM_CLK_IVCLKIN:
421	case TAS2552_PDM_CLK_BCLK:
422	case TAS2552_PDM_CLK_MCLK:
423		mask = TAS2552_PDM_CLK_SEL_MASK;
424		val = (clk_id >> 1) & mask; /* bit 0:1 in the register */
425		reg = TAS2552_PDM_CFG;
426		tas2552->pdm_clk_id = clk_id;
427		tas2552->pdm_clk = freq;
428		break;
429	default:
430		dev_err(component->dev, "Invalid clk id: %d\n", clk_id);
431		return -EINVAL;
432	}
433
434	snd_soc_component_update_bits(component, reg, mask, val);
435
436	return 0;
437}
438
439static int tas2552_set_dai_tdm_slot(struct snd_soc_dai *dai,
440				    unsigned int tx_mask, unsigned int rx_mask,
441				    int slots, int slot_width)
442{
443	struct snd_soc_component *component = dai->component;
444	struct tas2552_data *tas2552 = snd_soc_component_get_drvdata(component);
445	unsigned int lsb;
446
447	if (unlikely(!tx_mask)) {
448		dev_err(component->dev, "tx masks need to be non 0\n");
449		return -EINVAL;
450	}
451
452	/* TDM based on DSP mode requires slots to be adjacent */
453	lsb = __ffs(tx_mask);
454	if ((lsb + 1) != __fls(tx_mask)) {
455		dev_err(component->dev, "Invalid mask, slots must be adjacent\n");
456		return -EINVAL;
457	}
458
459	tas2552->tdm_delay = lsb * slot_width;
460
461	/* DOUT in high-impedance on inactive bit clocks */
462	snd_soc_component_update_bits(component, TAS2552_DOUT,
463			    TAS2552_SDOUT_TRISTATE, TAS2552_SDOUT_TRISTATE);
464
465	return 0;
466}
467
468static int tas2552_mute(struct snd_soc_dai *dai, int mute, int direction)
469{
470	u8 cfg1_reg = 0;
471	struct snd_soc_component *component = dai->component;
472
473	if (mute)
474		cfg1_reg |= TAS2552_MUTE;
475
476	snd_soc_component_update_bits(component, TAS2552_CFG_1, TAS2552_MUTE, cfg1_reg);
477
478	return 0;
479}
480
481static int tas2552_runtime_suspend(struct device *dev)
482{
483	struct tas2552_data *tas2552 = dev_get_drvdata(dev);
484
485	tas2552_sw_shutdown(tas2552, 1);
486
487	regcache_cache_only(tas2552->regmap, true);
488	regcache_mark_dirty(tas2552->regmap);
489
490	gpiod_set_value(tas2552->enable_gpio, 0);
491
492	return 0;
493}
494
495static int tas2552_runtime_resume(struct device *dev)
496{
497	struct tas2552_data *tas2552 = dev_get_drvdata(dev);
498
499	gpiod_set_value(tas2552->enable_gpio, 1);
500
501	tas2552_sw_shutdown(tas2552, 0);
502
503	regcache_cache_only(tas2552->regmap, false);
504	regcache_sync(tas2552->regmap);
505
506	return 0;
507}
508
509static const struct dev_pm_ops tas2552_pm = {
510	RUNTIME_PM_OPS(tas2552_runtime_suspend, tas2552_runtime_resume, NULL)
511};
512
513static const struct snd_soc_dai_ops tas2552_speaker_dai_ops = {
514	.hw_params	= tas2552_hw_params,
515	.prepare	= tas2552_prepare,
516	.set_sysclk	= tas2552_set_dai_sysclk,
517	.set_fmt	= tas2552_set_dai_fmt,
518	.set_tdm_slot	= tas2552_set_dai_tdm_slot,
519	.mute_stream	= tas2552_mute,
520	.no_capture_mute = 1,
521};
522
523/* Formats supported by TAS2552 driver. */
524#define TAS2552_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
525			 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)
526
527/* TAS2552 dai structure. */
528static struct snd_soc_dai_driver tas2552_dai[] = {
529	{
530		.name = "tas2552-amplifier",
531		.playback = {
532			.stream_name = "Playback",
533			.channels_min = 2,
534			.channels_max = 2,
535			.rates = SNDRV_PCM_RATE_8000_192000,
536			.formats = TAS2552_FORMATS,
537		},
538		.capture = {
539			.stream_name = "Capture",
540			.channels_min = 2,
541			.channels_max = 2,
542			.rates = SNDRV_PCM_RATE_8000_192000,
543			.formats = TAS2552_FORMATS,
544		},
545		.ops = &tas2552_speaker_dai_ops,
546	},
547};
548
549/*
550 * DAC digital volumes. From -7 to 24 dB in 1 dB steps
551 */
552static DECLARE_TLV_DB_SCALE(dac_tlv, -700, 100, 0);
553
554static const char * const tas2552_din_source_select[] = {
555	"Muted",
556	"Left",
557	"Right",
558	"Left + Right average",
559};
560static SOC_ENUM_SINGLE_DECL(tas2552_din_source_enum,
561			    TAS2552_CFG_3, 3,
562			    tas2552_din_source_select);
563
564static const struct snd_kcontrol_new tas2552_snd_controls[] = {
565	SOC_SINGLE_TLV("Speaker Driver Playback Volume",
566			 TAS2552_PGA_GAIN, 0, 0x1f, 0, dac_tlv),
567	SOC_ENUM("DIN source", tas2552_din_source_enum),
568};
569
570static int tas2552_component_probe(struct snd_soc_component *component)
571{
572	struct tas2552_data *tas2552 = snd_soc_component_get_drvdata(component);
573	int ret;
574
575	tas2552->component = component;
576
577	ret = regulator_bulk_enable(ARRAY_SIZE(tas2552->supplies),
578				    tas2552->supplies);
579
580	if (ret != 0) {
581		dev_err(component->dev, "Failed to enable supplies: %d\n",
582			ret);
583		return ret;
584	}
585
586	gpiod_set_value(tas2552->enable_gpio, 1);
587
588	ret = pm_runtime_resume_and_get(component->dev);
589	if (ret < 0) {
590		dev_err(component->dev, "Enabling device failed: %d\n",
591			ret);
592		goto probe_fail;
593	}
594
595	snd_soc_component_update_bits(component, TAS2552_CFG_1, TAS2552_MUTE, TAS2552_MUTE);
596	snd_soc_component_write(component, TAS2552_CFG_3, TAS2552_I2S_OUT_SEL |
597					    TAS2552_DIN_SRC_SEL_AVG_L_R);
598	snd_soc_component_write(component, TAS2552_OUTPUT_DATA,
599		      TAS2552_PDM_DATA_SEL_V_I |
600		      TAS2552_R_DATA_OUT(TAS2552_DATA_OUT_V_DATA));
601	snd_soc_component_write(component, TAS2552_BOOST_APT_CTRL, TAS2552_APT_DELAY_200 |
602						     TAS2552_APT_THRESH_20_17);
603
604	snd_soc_component_write(component, TAS2552_CFG_2, TAS2552_BOOST_EN | TAS2552_APT_EN |
605					    TAS2552_LIM_EN);
606
607	return 0;
608
609probe_fail:
610	pm_runtime_put_noidle(component->dev);
611	gpiod_set_value(tas2552->enable_gpio, 0);
612
613	regulator_bulk_disable(ARRAY_SIZE(tas2552->supplies),
614					tas2552->supplies);
615	return ret;
616}
617
618static void tas2552_component_remove(struct snd_soc_component *component)
619{
620	struct tas2552_data *tas2552 = snd_soc_component_get_drvdata(component);
621
622	pm_runtime_put(component->dev);
623
624	gpiod_set_value(tas2552->enable_gpio, 0);
625};
626
627#ifdef CONFIG_PM
628static int tas2552_suspend(struct snd_soc_component *component)
629{
630	struct tas2552_data *tas2552 = snd_soc_component_get_drvdata(component);
631	int ret;
632
633	ret = regulator_bulk_disable(ARRAY_SIZE(tas2552->supplies),
634					tas2552->supplies);
635
636	if (ret != 0)
637		dev_err(component->dev, "Failed to disable supplies: %d\n",
638			ret);
639	return ret;
640}
641
642static int tas2552_resume(struct snd_soc_component *component)
643{
644	struct tas2552_data *tas2552 = snd_soc_component_get_drvdata(component);
645	int ret;
646
647	ret = regulator_bulk_enable(ARRAY_SIZE(tas2552->supplies),
648				    tas2552->supplies);
649
650	if (ret != 0) {
651		dev_err(component->dev, "Failed to enable supplies: %d\n",
652			ret);
653	}
654
655	return ret;
656}
657#else
658#define tas2552_suspend NULL
659#define tas2552_resume NULL
660#endif
661
662static const struct snd_soc_component_driver soc_component_dev_tas2552 = {
663	.probe			= tas2552_component_probe,
664	.remove			= tas2552_component_remove,
665	.suspend		= tas2552_suspend,
666	.resume			= tas2552_resume,
667	.controls		= tas2552_snd_controls,
668	.num_controls		= ARRAY_SIZE(tas2552_snd_controls),
669	.dapm_widgets		= tas2552_dapm_widgets,
670	.num_dapm_widgets	= ARRAY_SIZE(tas2552_dapm_widgets),
671	.dapm_routes		= tas2552_audio_map,
672	.num_dapm_routes	= ARRAY_SIZE(tas2552_audio_map),
673	.idle_bias_on		= 1,
674	.endianness		= 1,
675};
676
677static const struct regmap_config tas2552_regmap_config = {
678	.reg_bits = 8,
679	.val_bits = 8,
680
681	.max_register = TAS2552_MAX_REG,
682	.reg_defaults = tas2552_reg_defs,
683	.num_reg_defaults = ARRAY_SIZE(tas2552_reg_defs),
684	.cache_type = REGCACHE_RBTREE,
685};
686
687static int tas2552_probe(struct i2c_client *client)
688{
689	struct device *dev;
690	struct tas2552_data *data;
691	int ret;
692	int i;
693
694	dev = &client->dev;
695	data = devm_kzalloc(&client->dev, sizeof(*data), GFP_KERNEL);
696	if (data == NULL)
697		return -ENOMEM;
698
699	data->enable_gpio = devm_gpiod_get_optional(dev, "enable",
700						    GPIOD_OUT_LOW);
701	if (IS_ERR(data->enable_gpio))
702		return PTR_ERR(data->enable_gpio);
703
704	data->tas2552_client = client;
705	data->regmap = devm_regmap_init_i2c(client, &tas2552_regmap_config);
706	if (IS_ERR(data->regmap)) {
707		ret = PTR_ERR(data->regmap);
708		dev_err(&client->dev, "Failed to allocate register map: %d\n",
709			ret);
710		return ret;
711	}
712
713	for (i = 0; i < ARRAY_SIZE(data->supplies); i++)
714		data->supplies[i].supply = tas2552_supply_names[i];
715
716	ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(data->supplies),
717				      data->supplies);
718	if (ret != 0) {
719		dev_err(dev, "Failed to request supplies: %d\n", ret);
720		return ret;
721	}
722
723	pm_runtime_set_active(&client->dev);
724	pm_runtime_set_autosuspend_delay(&client->dev, 1000);
725	pm_runtime_use_autosuspend(&client->dev);
726	pm_runtime_enable(&client->dev);
727	pm_runtime_put_sync_autosuspend(&client->dev);
728
729	dev_set_drvdata(&client->dev, data);
730
731	ret = devm_snd_soc_register_component(&client->dev,
732				      &soc_component_dev_tas2552,
733				      tas2552_dai, ARRAY_SIZE(tas2552_dai));
734	if (ret < 0) {
735		dev_err(&client->dev, "Failed to register component: %d\n", ret);
736		pm_runtime_get_noresume(&client->dev);
737	}
738
739	return ret;
740}
741
742static void tas2552_i2c_remove(struct i2c_client *client)
743{
744	pm_runtime_disable(&client->dev);
745}
746
747static const struct i2c_device_id tas2552_id[] = {
748	{ "tas2552" },
749	{ }
750};
751MODULE_DEVICE_TABLE(i2c, tas2552_id);
752
753#if IS_ENABLED(CONFIG_OF)
754static const struct of_device_id tas2552_of_match[] = {
755	{ .compatible = "ti,tas2552", },
756	{},
757};
758MODULE_DEVICE_TABLE(of, tas2552_of_match);
759#endif
760
761static struct i2c_driver tas2552_i2c_driver = {
762	.driver = {
763		.name = "tas2552",
764		.of_match_table = of_match_ptr(tas2552_of_match),
765		.pm = pm_ptr(&tas2552_pm),
766	},
767	.probe = tas2552_probe,
768	.remove = tas2552_i2c_remove,
769	.id_table = tas2552_id,
770};
771
772module_i2c_driver(tas2552_i2c_driver);
773
774MODULE_AUTHOR("Dan Muprhy <dmurphy@ti.com>");
775MODULE_DESCRIPTION("TAS2552 Audio amplifier driver");
776MODULE_LICENSE("GPL");