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   1// SPDX-License-Identifier: GPL-2.0-or-later
   2//
   3// sma1303.c -- sma1303 ALSA SoC Audio driver
   4//
   5// Copyright 2023 Iron Device Corporation
   6//
   7// Auther: Gyuhwa Park <gyuhwa.park@irondevice.com>
   8//         Kiseok Jo <kiseok.jo@irondevice.com>
   9
  10#include <linux/mod_devicetable.h>
  11#include <linux/module.h>
  12#include <linux/moduleparam.h>
  13#include <linux/kernel.h>
  14#include <linux/init.h>
  15#include <linux/delay.h>
  16#include <linux/pm.h>
  17#include <linux/i2c.h>
  18#include <linux/regmap.h>
  19#include <sound/core.h>
  20#include <sound/pcm.h>
  21#include <sound/pcm_params.h>
  22#include <sound/soc.h>
  23#include <sound/initval.h>
  24#include <sound/tlv.h>
  25#include <linux/slab.h>
  26#include <asm/div64.h>
  27
  28#include "sma1303.h"
  29
  30#define CHECK_PERIOD_TIME 1 /* sec per HZ */
  31#define MAX_CONTROL_NAME 48
  32
  33#define PLL_MATCH(_input_clk_name, _output_clk_name, _input_clk,\
  34		_post_n, _n, _vco,  _p_cp)\
  35{\
  36	.input_clk_name		= _input_clk_name,\
  37	.output_clk_name	= _output_clk_name,\
  38	.input_clk		= _input_clk,\
  39	.post_n			= _post_n,\
  40	.n			= _n,\
  41	.vco			= _vco,\
  42	.p_cp		= _p_cp,\
  43}
  44
  45enum sma1303_type {
  46	SMA1303,
  47};
  48
  49struct sma1303_pll_match {
  50	char *input_clk_name;
  51	char *output_clk_name;
  52	unsigned int input_clk;
  53	unsigned int post_n;
  54	unsigned int n;
  55	unsigned int vco;
  56	unsigned int p_cp;
  57};
  58
  59struct sma1303_priv {
  60	enum sma1303_type devtype;
  61	struct attribute_group *attr_grp;
  62	struct delayed_work check_fault_work;
  63	struct device *dev;
  64	struct kobject *kobj;
  65	struct regmap *regmap;
  66	struct sma1303_pll_match *pll_matches;
  67	bool amp_power_status;
  68	bool force_mute_status;
  69	int num_of_pll_matches;
  70	int retry_cnt;
  71	unsigned int amp_mode;
  72	unsigned int cur_vol;
  73	unsigned int format;
  74	unsigned int frame_size;
  75	unsigned int init_vol;
  76	unsigned int last_bclk;
  77	unsigned int last_ocp_val;
  78	unsigned int last_over_temp;
  79	unsigned int rev_num;
  80	unsigned int sys_clk_id;
  81	unsigned int tdm_slot_rx;
  82	unsigned int tdm_slot_tx;
  83	unsigned int tsdw_cnt;
  84	long check_fault_period;
  85	long check_fault_status;
  86};
  87
  88static struct sma1303_pll_match sma1303_pll_matches[] = {
  89PLL_MATCH("1.411MHz",  "24.595MHz", 1411200,  0x07, 0xF4, 0x8B, 0x03),
  90PLL_MATCH("1.536MHz",  "24.576MHz", 1536000,  0x07, 0xE0, 0x8B, 0x03),
  91PLL_MATCH("3.072MHz",  "24.576MHz", 3072000,  0x07, 0x70, 0x8B, 0x03),
  92PLL_MATCH("6.144MHz",  "24.576MHz", 6144000,  0x07, 0x70, 0x8B, 0x07),
  93PLL_MATCH("12.288MHz", "24.576MHz", 12288000, 0x07, 0x70, 0x8B, 0x0B),
  94PLL_MATCH("19.2MHz",   "24.343MHz", 19200000, 0x07, 0x47, 0x8B, 0x0A),
  95PLL_MATCH("24.576MHz", "24.576MHz", 24576000, 0x07, 0x70, 0x8B, 0x0F),
  96};
  97
  98static int sma1303_startup(struct snd_soc_component *);
  99static int sma1303_shutdown(struct snd_soc_component *);
 100
 101static const struct reg_default sma1303_reg_def[] = {
 102	{ 0x00, 0x80 },
 103	{ 0x01, 0x00 },
 104	{ 0x02, 0x00 },
 105	{ 0x03, 0x11 },
 106	{ 0x04, 0x17 },
 107	{ 0x09, 0x00 },
 108	{ 0x0A, 0x31 },
 109	{ 0x0B, 0x98 },
 110	{ 0x0C, 0x84 },
 111	{ 0x0D, 0x07 },
 112	{ 0x0E, 0x3F },
 113	{ 0x10, 0x00 },
 114	{ 0x11, 0x00 },
 115	{ 0x12, 0x00 },
 116	{ 0x14, 0x5C },
 117	{ 0x15, 0x01 },
 118	{ 0x16, 0x0F },
 119	{ 0x17, 0x0F },
 120	{ 0x18, 0x0F },
 121	{ 0x19, 0x00 },
 122	{ 0x1A, 0x00 },
 123	{ 0x1B, 0x00 },
 124	{ 0x23, 0x19 },
 125	{ 0x24, 0x00 },
 126	{ 0x25, 0x00 },
 127	{ 0x26, 0x04 },
 128	{ 0x33, 0x00 },
 129	{ 0x36, 0x92 },
 130	{ 0x37, 0x27 },
 131	{ 0x3B, 0x5A },
 132	{ 0x3C, 0x20 },
 133	{ 0x3D, 0x00 },
 134	{ 0x3E, 0x03 },
 135	{ 0x3F, 0x0C },
 136	{ 0x8B, 0x07 },
 137	{ 0x8C, 0x70 },
 138	{ 0x8D, 0x8B },
 139	{ 0x8E, 0x6F },
 140	{ 0x8F, 0x03 },
 141	{ 0x90, 0x26 },
 142	{ 0x91, 0x42 },
 143	{ 0x92, 0xE0 },
 144	{ 0x94, 0x35 },
 145	{ 0x95, 0x0C },
 146	{ 0x96, 0x42 },
 147	{ 0x97, 0x95 },
 148	{ 0xA0, 0x00 },
 149	{ 0xA1, 0x3B },
 150	{ 0xA2, 0xC8 },
 151	{ 0xA3, 0x28 },
 152	{ 0xA4, 0x40 },
 153	{ 0xA5, 0x01 },
 154	{ 0xA6, 0x41 },
 155	{ 0xA7, 0x00 },
 156};
 157
 158static bool sma1303_readable_register(struct device *dev, unsigned int reg)
 159{
 160	bool result;
 161
 162	if (reg > SMA1303_FF_DEVICE_INDEX)
 163		return false;
 164
 165	switch (reg) {
 166	case SMA1303_00_SYSTEM_CTRL ... SMA1303_04_INPUT1_CTRL4:
 167	case SMA1303_09_OUTPUT_CTRL ... SMA1303_0E_MUTE_VOL_CTRL:
 168	case SMA1303_10_SYSTEM_CTRL1 ... SMA1303_12_SYSTEM_CTRL3:
 169	case SMA1303_14_MODULATOR ... SMA1303_1B_BASS_SPK7:
 170	case SMA1303_23_COMP_LIM1 ... SMA1303_26_COMP_LIM4:
 171	case SMA1303_33_SDM_CTRL ... SMA1303_34_OTP_DATA1:
 172	case SMA1303_36_PROTECTION  ... SMA1303_38_OTP_TRM0:
 173	case SMA1303_3B_TEST1  ... SMA1303_3F_ATEST2:
 174	case SMA1303_8B_PLL_POST_N ... SMA1303_92_FDPEC_CTRL:
 175	case SMA1303_94_BOOST_CTRL1 ... SMA1303_97_BOOST_CTRL4:
 176	case SMA1303_A0_PAD_CTRL0 ... SMA1303_A7_CLK_MON:
 177	case SMA1303_FA_STATUS1 ... SMA1303_FB_STATUS2:
 178		result = true;
 179		break;
 180	case SMA1303_FF_DEVICE_INDEX:
 181		result = true;
 182		break;
 183	default:
 184		result = false;
 185		break;
 186	}
 187	return result;
 188}
 189
 190static bool sma1303_writeable_register(struct device *dev, unsigned int reg)
 191{
 192	bool result;
 193
 194	if (reg > SMA1303_FF_DEVICE_INDEX)
 195		return false;
 196
 197	switch (reg) {
 198	case SMA1303_00_SYSTEM_CTRL ... SMA1303_04_INPUT1_CTRL4:
 199	case SMA1303_09_OUTPUT_CTRL ... SMA1303_0E_MUTE_VOL_CTRL:
 200	case SMA1303_10_SYSTEM_CTRL1 ... SMA1303_12_SYSTEM_CTRL3:
 201	case SMA1303_14_MODULATOR ... SMA1303_1B_BASS_SPK7:
 202	case SMA1303_23_COMP_LIM1 ... SMA1303_26_COMP_LIM4:
 203	case SMA1303_33_SDM_CTRL:
 204	case SMA1303_36_PROTECTION  ... SMA1303_37_SLOPE_CTRL:
 205	case SMA1303_3B_TEST1  ... SMA1303_3F_ATEST2:
 206	case SMA1303_8B_PLL_POST_N ... SMA1303_92_FDPEC_CTRL:
 207	case SMA1303_94_BOOST_CTRL1 ... SMA1303_97_BOOST_CTRL4:
 208	case SMA1303_A0_PAD_CTRL0 ... SMA1303_A7_CLK_MON:
 209		result = true;
 210		break;
 211	default:
 212		result = false;
 213		break;
 214	}
 215	return result;
 216}
 217
 218static bool sma1303_volatile_register(struct device *dev, unsigned int reg)
 219{
 220	bool result;
 221
 222	switch (reg) {
 223	case SMA1303_FA_STATUS1 ... SMA1303_FB_STATUS2:
 224		result = true;
 225		break;
 226	case SMA1303_FF_DEVICE_INDEX:
 227		result = true;
 228		break;
 229	default:
 230		result = false;
 231		break;
 232	}
 233	return result;
 234}
 235
 236static const DECLARE_TLV_DB_SCALE(sma1303_spk_tlv, -6000, 50, 0);
 237
 238static int sma1303_regmap_write(struct sma1303_priv *sma1303,
 239				unsigned int reg, unsigned int val)
 240{
 241	int ret = 0;
 242	int cnt = sma1303->retry_cnt;
 243
 244	while (cnt--) {
 245		ret = regmap_write(sma1303->regmap, reg, val);
 246		if (ret < 0) {
 247			dev_err(sma1303->dev,
 248					"Failed to write [0x%02X]\n", reg);
 249		} else
 250			break;
 251	}
 252	return ret;
 253}
 254
 255static int sma1303_regmap_update_bits(struct sma1303_priv *sma1303,
 256	unsigned int reg, unsigned int mask, unsigned int val, bool *change)
 257{
 258	int ret = 0;
 259	int cnt = sma1303->retry_cnt;
 260
 261	while (cnt--) {
 262		ret = regmap_update_bits_check(sma1303->regmap, reg,
 263				mask, val, change);
 264		if (ret < 0) {
 265			dev_err(sma1303->dev,
 266					"Failed to update [0x%02X]\n", reg);
 267		} else
 268			break;
 269	}
 270	return ret;
 271}
 272
 273static int sma1303_regmap_read(struct sma1303_priv *sma1303,
 274			unsigned int reg, unsigned int *val)
 275{
 276	int ret = 0;
 277	int cnt = sma1303->retry_cnt;
 278
 279	while (cnt--) {
 280		ret = regmap_read(sma1303->regmap, reg, val);
 281		if (ret < 0) {
 282			dev_err(sma1303->dev,
 283					"Failed to read [0x%02X]\n", reg);
 284		} else
 285			break;
 286	}
 287	return ret;
 288}
 289
 290static const char * const sma1303_aif_in_source_text[] = {
 291	"Mono", "Left", "Right"};
 292static const char * const sma1303_aif_out_source_text[] = {
 293	"Disable", "After_FmtC", "After_Mixer", "After_DSP", "After_Post",
 294		"Clk_PLL", "Clk_OSC"};
 295static const char * const sma1303_tdm_slot_text[] = {
 296	"Slot0", "Slot1", "Slot2", "Slot3",
 297	"Slot4", "Slot5", "Slot6", "Slot7"};
 298
 299static const struct soc_enum sma1303_aif_in_source_enum =
 300	SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(sma1303_aif_in_source_text),
 301			sma1303_aif_in_source_text);
 302static const struct soc_enum sma1303_aif_out_source_enum =
 303	SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(sma1303_aif_out_source_text),
 304			sma1303_aif_out_source_text);
 305static const struct soc_enum sma1303_tdm_slot_enum =
 306	SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(sma1303_tdm_slot_text),
 307			sma1303_tdm_slot_text);
 308
 309static int sma1303_force_mute_get(struct snd_kcontrol *kcontrol,
 310				struct snd_ctl_elem_value *ucontrol)
 311{
 312	struct snd_soc_component *component =
 313		snd_soc_kcontrol_component(kcontrol);
 314	struct sma1303_priv *sma1303 = snd_soc_component_get_drvdata(component);
 315
 316	ucontrol->value.integer.value[0] = (int)sma1303->force_mute_status;
 317	dev_dbg(sma1303->dev, "%s : Force Mute %s\n", __func__,
 318			sma1303->force_mute_status ? "ON" : "OFF");
 319
 320	return 0;
 321}
 322
 323static int sma1303_force_mute_put(struct snd_kcontrol *kcontrol,
 324				struct snd_ctl_elem_value *ucontrol)
 325{
 326	struct snd_soc_component *component =
 327		snd_soc_kcontrol_component(kcontrol);
 328	struct sma1303_priv *sma1303 = snd_soc_component_get_drvdata(component);
 329	bool change = false, val = (bool)ucontrol->value.integer.value[0];
 330
 331	if (sma1303->force_mute_status == val)
 332		change = false;
 333	else {
 334		change = true;
 335		sma1303->force_mute_status = val;
 336	}
 337	dev_dbg(sma1303->dev, "%s : Force Mute %s\n", __func__,
 338			sma1303->force_mute_status ? "ON" : "OFF");
 339
 340	return change;
 341}
 342
 343static int sma1303_postscaler_get(struct snd_kcontrol *kcontrol,
 344				struct snd_ctl_elem_value *ucontrol)
 345{
 346	struct snd_soc_component *component =
 347		snd_soc_kcontrol_component(kcontrol);
 348	struct sma1303_priv *sma1303 = snd_soc_component_get_drvdata(component);
 349	int val, ret;
 350
 351	ret = sma1303_regmap_read(sma1303, SMA1303_90_POSTSCALER, &val);
 352	if (ret < 0)
 353		return -EINVAL;
 354
 355	ucontrol->value.integer.value[0] = (val & 0x7E) >> 1;
 356
 357	return 0;
 358}
 359
 360static int sma1303_postscaler_put(struct snd_kcontrol *kcontrol,
 361				struct snd_ctl_elem_value *ucontrol)
 362{
 363	struct snd_soc_component *component =
 364		snd_soc_kcontrol_component(kcontrol);
 365	struct sma1303_priv *sma1303 = snd_soc_component_get_drvdata(component);
 366	int ret, val = (int)ucontrol->value.integer.value[0];
 367	bool change;
 368
 369	ret = sma1303_regmap_update_bits(sma1303,
 370			SMA1303_90_POSTSCALER, 0x7E, (val << 1), &change);
 371	if (ret < 0)
 372		return -EINVAL;
 373
 374	return change;
 375}
 376
 377static int sma1303_tdm_slot_rx_get(struct snd_kcontrol *kcontrol,
 378				struct snd_ctl_elem_value *ucontrol)
 379{
 380	struct snd_soc_component *component =
 381		snd_soc_kcontrol_component(kcontrol);
 382	struct sma1303_priv *sma1303 = snd_soc_component_get_drvdata(component);
 383	int val, ret;
 384
 385	ret = sma1303_regmap_read(sma1303, SMA1303_A5_TDM1, &val);
 386	if (ret < 0)
 387		return -EINVAL;
 388
 389	ucontrol->value.integer.value[0] = (val & 0x38) >> 3;
 390	sma1303->tdm_slot_rx = ucontrol->value.integer.value[0];
 391
 392	return 0;
 393}
 394
 395static int sma1303_tdm_slot_rx_put(struct snd_kcontrol *kcontrol,
 396				struct snd_ctl_elem_value *ucontrol)
 397{
 398	struct snd_soc_component *component =
 399		snd_soc_kcontrol_component(kcontrol);
 400	struct sma1303_priv *sma1303 = snd_soc_component_get_drvdata(component);
 401	int ret, val = (int)ucontrol->value.integer.value[0];
 402	bool change;
 403
 404	ret = sma1303_regmap_update_bits(sma1303,
 405			SMA1303_A5_TDM1, 0x38, (val << 3), &change);
 406	if (ret < 0)
 407		return -EINVAL;
 408
 409	return change;
 410}
 411
 412static int sma1303_tdm_slot_tx_get(struct snd_kcontrol *kcontrol,
 413				struct snd_ctl_elem_value *ucontrol)
 414{
 415	struct snd_soc_component *component =
 416		snd_soc_kcontrol_component(kcontrol);
 417	struct sma1303_priv *sma1303 = snd_soc_component_get_drvdata(component);
 418	int val, ret;
 419
 420	ret = sma1303_regmap_read(sma1303, SMA1303_A6_TDM2, &val);
 421	if (ret < 0)
 422		return -EINVAL;
 423
 424	ucontrol->value.integer.value[0] = (val & 0x38) >> 3;
 425	sma1303->tdm_slot_tx = ucontrol->value.integer.value[0];
 426
 427	return 0;
 428}
 429
 430static int sma1303_tdm_slot_tx_put(struct snd_kcontrol *kcontrol,
 431				struct snd_ctl_elem_value *ucontrol)
 432{
 433	struct snd_soc_component *component =
 434		snd_soc_kcontrol_component(kcontrol);
 435	struct sma1303_priv *sma1303 = snd_soc_component_get_drvdata(component);
 436	int ret, val = (int)ucontrol->value.integer.value[0];
 437	bool change;
 438
 439	ret = sma1303_regmap_update_bits(sma1303,
 440			SMA1303_A6_TDM2, 0x38, (val << 3), &change);
 441	if (ret < 0)
 442		return -EINVAL;
 443
 444	return change;
 445}
 446
 447static int sma1303_startup(struct snd_soc_component *component)
 448{
 449	struct sma1303_priv *sma1303 = snd_soc_component_get_drvdata(component);
 450	bool change = false, temp = false;
 451
 452	sma1303_regmap_update_bits(sma1303, SMA1303_8E_PLL_CTRL,
 453			SMA1303_PLL_PD2_MASK, SMA1303_PLL_OPERATION2, &temp);
 454	if (temp == true)
 455		change = true;
 456
 457	sma1303_regmap_update_bits(sma1303, SMA1303_00_SYSTEM_CTRL,
 458			SMA1303_POWER_MASK, SMA1303_POWER_ON, &temp);
 459	if (temp == true)
 460		change = true;
 461
 462	if (sma1303->amp_mode == SMA1303_MONO) {
 463		sma1303_regmap_update_bits(sma1303,
 464				SMA1303_10_SYSTEM_CTRL1,
 465				SMA1303_SPK_MODE_MASK,
 466				SMA1303_SPK_MONO,
 467				&temp);
 468		if (temp == true)
 469			change = true;
 470
 471	} else {
 472		sma1303_regmap_update_bits(sma1303,
 473				SMA1303_10_SYSTEM_CTRL1,
 474				SMA1303_SPK_MODE_MASK,
 475				SMA1303_SPK_STEREO,
 476				&temp);
 477		if (temp == true)
 478			change = true;
 479	}
 480
 481	if (sma1303->check_fault_status) {
 482		if (sma1303->check_fault_period > 0)
 483			queue_delayed_work(system_freezable_wq,
 484				&sma1303->check_fault_work,
 485					sma1303->check_fault_period * HZ);
 486		else
 487			queue_delayed_work(system_freezable_wq,
 488				&sma1303->check_fault_work,
 489					CHECK_PERIOD_TIME * HZ);
 490	}
 491
 492	sma1303->amp_power_status = true;
 493
 494	return change;
 495}
 496
 497static int sma1303_shutdown(struct snd_soc_component *component)
 498{
 499	struct sma1303_priv *sma1303 = snd_soc_component_get_drvdata(component);
 500	bool change = false, temp = false;
 501
 502	cancel_delayed_work_sync(&sma1303->check_fault_work);
 503
 504	sma1303_regmap_update_bits(sma1303, SMA1303_10_SYSTEM_CTRL1,
 505			SMA1303_SPK_MODE_MASK, SMA1303_SPK_OFF, &temp);
 506	if (temp == true)
 507		change = true;
 508
 509	sma1303_regmap_update_bits(sma1303, SMA1303_00_SYSTEM_CTRL,
 510			SMA1303_POWER_MASK, SMA1303_POWER_OFF, &temp);
 511	if (temp == true)
 512		change = true;
 513	sma1303_regmap_update_bits(sma1303, SMA1303_8E_PLL_CTRL,
 514			SMA1303_PLL_PD2_MASK, SMA1303_PLL_PD2, &temp);
 515	if (temp == true)
 516		change = true;
 517
 518	sma1303->amp_power_status = false;
 519
 520	return change;
 521}
 522
 523static int sma1303_aif_in_event(struct snd_soc_dapm_widget *w,
 524			struct snd_kcontrol *kcontrol, int event)
 525{
 526	struct snd_soc_component *component =
 527			snd_soc_dapm_to_component(w->dapm);
 528	struct sma1303_priv *sma1303 = snd_soc_component_get_drvdata(component);
 529	unsigned int mux = dapm_kcontrol_get_value(w->kcontrols[0]);
 530	int ret = 0;
 531	bool change = false, temp = false;
 532
 533	switch (event) {
 534	case SND_SOC_DAPM_PRE_PMU:
 535		switch (mux) {
 536		case 0:
 537			ret += sma1303_regmap_update_bits(sma1303,
 538					SMA1303_11_SYSTEM_CTRL2,
 539					SMA1303_MONOMIX_MASK,
 540					SMA1303_MONOMIX_ON,
 541					&change);
 542			sma1303->amp_mode = SMA1303_MONO;
 543			break;
 544		case 1:
 545			ret += sma1303_regmap_update_bits(sma1303,
 546					SMA1303_11_SYSTEM_CTRL2,
 547					SMA1303_MONOMIX_MASK,
 548					SMA1303_MONOMIX_OFF,
 549					&temp);
 550			if (temp == true)
 551				change = true;
 552			ret += sma1303_regmap_update_bits(sma1303,
 553					SMA1303_11_SYSTEM_CTRL2,
 554					SMA1303_LR_DATA_SW_MASK,
 555					SMA1303_LR_DATA_SW_NORMAL,
 556					&temp);
 557			if (temp == true)
 558				change = true;
 559			sma1303->amp_mode = SMA1303_STEREO;
 560			break;
 561		case 2:
 562			ret += sma1303_regmap_update_bits(sma1303,
 563					SMA1303_11_SYSTEM_CTRL2,
 564					SMA1303_MONOMIX_MASK,
 565					SMA1303_MONOMIX_OFF,
 566					&temp);
 567			if (temp == true)
 568				change = true;
 569			ret += sma1303_regmap_update_bits(sma1303,
 570					SMA1303_11_SYSTEM_CTRL2,
 571					SMA1303_LR_DATA_SW_MASK,
 572					SMA1303_LR_DATA_SW_SWAP,
 573					&temp);
 574			if (temp == true)
 575				change = true;
 576			sma1303->amp_mode = SMA1303_STEREO;
 577			break;
 578		default:
 579			dev_err(sma1303->dev, "%s : Invalid value (%d)\n",
 580								__func__, mux);
 581			return -EINVAL;
 582		}
 583
 584		dev_dbg(sma1303->dev, "%s : Source : %s\n", __func__,
 585					sma1303_aif_in_source_text[mux]);
 586		break;
 587	}
 588	if (ret < 0)
 589		return -EINVAL;
 590	return change;
 591}
 592
 593static int sma1303_aif_out_event(struct snd_soc_dapm_widget *w,
 594			struct snd_kcontrol *kcontrol, int event)
 595{
 596	struct snd_soc_component *component =
 597			snd_soc_dapm_to_component(w->dapm);
 598	struct sma1303_priv *sma1303 = snd_soc_component_get_drvdata(component);
 599	unsigned int mux = dapm_kcontrol_get_value(w->kcontrols[0]);
 600	int ret = 0;
 601	bool change = false, temp = false;
 602
 603	switch (event) {
 604	case SND_SOC_DAPM_PRE_PMU:
 605		switch (mux) {
 606		case 0:
 607			ret += sma1303_regmap_update_bits(sma1303,
 608					SMA1303_A3_TOP_MAN2,
 609					SMA1303_TEST_CLKO_EN_MASK,
 610					SMA1303_NORMAL_SDO,
 611					&temp);
 612			if (temp == true)
 613				change = true;
 614			ret += sma1303_regmap_update_bits(sma1303,
 615					SMA1303_09_OUTPUT_CTRL,
 616					SMA1303_PORT_OUT_SEL_MASK,
 617					SMA1303_OUT_SEL_DISABLE,
 618					&temp);
 619			if (temp == true)
 620				change = true;
 621			break;
 622		case 1:
 623			ret += sma1303_regmap_update_bits(sma1303,
 624					SMA1303_A3_TOP_MAN2,
 625					SMA1303_TEST_CLKO_EN_MASK,
 626					SMA1303_NORMAL_SDO,
 627					&temp);
 628			if (temp == true)
 629				change = true;
 630			ret += sma1303_regmap_update_bits(sma1303,
 631					SMA1303_09_OUTPUT_CTRL,
 632					SMA1303_PORT_OUT_SEL_MASK,
 633					SMA1303_FORMAT_CONVERTER,
 634					&temp);
 635			if (temp == true)
 636				change = true;
 637			break;
 638		case 2:
 639			ret += sma1303_regmap_update_bits(sma1303,
 640					SMA1303_A3_TOP_MAN2,
 641					SMA1303_TEST_CLKO_EN_MASK,
 642					SMA1303_NORMAL_SDO,
 643					&temp);
 644			if (temp == true)
 645				change = true;
 646			ret += sma1303_regmap_update_bits(sma1303,
 647					SMA1303_09_OUTPUT_CTRL,
 648					SMA1303_PORT_OUT_SEL_MASK,
 649					SMA1303_MIXER_OUTPUT,
 650					&temp);
 651			if (temp == true)
 652				change = true;
 653			break;
 654		case 3:
 655			ret += sma1303_regmap_update_bits(sma1303,
 656					SMA1303_A3_TOP_MAN2,
 657					SMA1303_TEST_CLKO_EN_MASK,
 658					SMA1303_NORMAL_SDO,
 659					&temp);
 660			if (temp == true)
 661				change = true;
 662			ret += sma1303_regmap_update_bits(sma1303,
 663					SMA1303_09_OUTPUT_CTRL,
 664					SMA1303_PORT_OUT_SEL_MASK,
 665					SMA1303_SPEAKER_PATH,
 666					&temp);
 667			if (temp == true)
 668				change = true;
 669			break;
 670		case 4:
 671			ret += sma1303_regmap_update_bits(sma1303,
 672					SMA1303_A3_TOP_MAN2,
 673					SMA1303_TEST_CLKO_EN_MASK,
 674					SMA1303_NORMAL_SDO,
 675					&temp);
 676			if (temp == true)
 677				change = true;
 678			ret += sma1303_regmap_update_bits(sma1303,
 679					SMA1303_09_OUTPUT_CTRL,
 680					SMA1303_PORT_OUT_SEL_MASK,
 681					SMA1303_POSTSCALER_OUTPUT,
 682					&temp);
 683			if (temp == true)
 684				change = true;
 685			break;
 686		case 5:
 687			ret += sma1303_regmap_update_bits(sma1303,
 688					SMA1303_A3_TOP_MAN2,
 689					SMA1303_TEST_CLKO_EN_MASK,
 690					SMA1303_CLK_OUT_SDO,
 691					&temp);
 692			if (temp == true)
 693				change = true;
 694			ret += sma1303_regmap_update_bits(sma1303,
 695					SMA1303_A3_TOP_MAN2,
 696					SMA1303_MON_OSC_PLL_MASK,
 697					SMA1303_PLL_SDO,
 698					&temp);
 699			if (temp == true)
 700				change = true;
 701			break;
 702		case 6:
 703			ret += sma1303_regmap_update_bits(sma1303,
 704					SMA1303_A3_TOP_MAN2,
 705					SMA1303_TEST_CLKO_EN_MASK,
 706					SMA1303_CLK_OUT_SDO,
 707					&temp);
 708			if (temp == true)
 709				change = true;
 710			ret += sma1303_regmap_update_bits(sma1303,
 711					SMA1303_A3_TOP_MAN2,
 712					SMA1303_MON_OSC_PLL_MASK,
 713					SMA1303_OSC_SDO,
 714					&temp);
 715			if (temp == true)
 716				change = true;
 717			break;
 718		default:
 719			dev_err(sma1303->dev, "%s : Invalid value (%d)\n",
 720								__func__, mux);
 721			return -EINVAL;
 722		}
 723
 724		dev_dbg(sma1303->dev, "%s : Source : %s\n", __func__,
 725					sma1303_aif_out_source_text[mux]);
 726		break;
 727	}
 728	if (ret < 0)
 729		return -EINVAL;
 730	return change;
 731}
 732
 733static int sma1303_sdo_event(struct snd_soc_dapm_widget *w,
 734		struct snd_kcontrol *kcontrol, int event)
 735{
 736	struct snd_soc_component *component =
 737		snd_soc_dapm_to_component(w->dapm);
 738	struct sma1303_priv *sma1303 = snd_soc_component_get_drvdata(component);
 739	int ret = 0;
 740	bool change = false, temp = false;
 741
 742	switch (event) {
 743	case SND_SOC_DAPM_PRE_PMU:
 744		dev_dbg(sma1303->dev,
 745			"%s : SND_SOC_DAPM_PRE_PMU\n", __func__);
 746		ret += sma1303_regmap_update_bits(sma1303,
 747				SMA1303_09_OUTPUT_CTRL,
 748				SMA1303_PORT_CONFIG_MASK,
 749				SMA1303_OUTPUT_PORT_ENABLE,
 750				&temp);
 751		if (temp == true)
 752			change = true;
 753		ret += sma1303_regmap_update_bits(sma1303,
 754				SMA1303_A3_TOP_MAN2,
 755				SMA1303_SDO_OUTPUT_MASK,
 756				SMA1303_NORMAL_OUT,
 757				&temp);
 758		if (temp == true)
 759			change = true;
 760		break;
 761	case SND_SOC_DAPM_POST_PMD:
 762		dev_dbg(sma1303->dev,
 763			"%s : SND_SOC_DAPM_POST_PMD\n", __func__);
 764		ret += sma1303_regmap_update_bits(sma1303,
 765				SMA1303_09_OUTPUT_CTRL,
 766				SMA1303_PORT_CONFIG_MASK,
 767				SMA1303_INPUT_PORT_ONLY,
 768				&temp);
 769		if (temp == true)
 770			change = true;
 771		ret += sma1303_regmap_update_bits(sma1303,
 772				SMA1303_A3_TOP_MAN2,
 773				SMA1303_SDO_OUTPUT_MASK,
 774				SMA1303_HIGH_Z_OUT,
 775				&temp);
 776		if (temp == true)
 777			change = true;
 778		break;
 779	}
 780	if (ret < 0)
 781		return -EINVAL;
 782	return change;
 783}
 784
 785static int sma1303_post_scaler_event(struct snd_soc_dapm_widget *w,
 786		struct snd_kcontrol *kcontrol, int event)
 787{
 788	struct snd_soc_component *component =
 789		snd_soc_dapm_to_component(w->dapm);
 790	struct sma1303_priv *sma1303 = snd_soc_component_get_drvdata(component);
 791	int ret = 0;
 792	bool change = false;
 793
 794	switch (event) {
 795	case SND_SOC_DAPM_PRE_PMU:
 796		dev_dbg(sma1303->dev,
 797				"%s : SND_SOC_DAPM_PRE_PMU\n", __func__);
 798		ret += sma1303_regmap_update_bits(sma1303,
 799				SMA1303_90_POSTSCALER,
 800				SMA1303_BYP_POST_MASK,
 801				SMA1303_EN_POST_SCALER,
 802				&change);
 803		break;
 804	case SND_SOC_DAPM_POST_PMD:
 805		dev_dbg(sma1303->dev,
 806				"%s : SND_SOC_DAPM_POST_PMD\n", __func__);
 807		ret += sma1303_regmap_update_bits(sma1303,
 808				SMA1303_90_POSTSCALER,
 809				SMA1303_BYP_POST_MASK,
 810				SMA1303_BYP_POST_SCALER,
 811				&change);
 812		break;
 813	}
 814	if (ret < 0)
 815		return -EINVAL;
 816	return change;
 817}
 818
 819static int sma1303_power_event(struct snd_soc_dapm_widget *w,
 820		struct snd_kcontrol *kcontrol, int event)
 821{
 822	struct snd_soc_component *component =
 823		snd_soc_dapm_to_component(w->dapm);
 824	struct sma1303_priv *sma1303 = snd_soc_component_get_drvdata(component);
 825	int ret = 0;
 826
 827	switch (event) {
 828	case SND_SOC_DAPM_POST_PMU:
 829		dev_dbg(sma1303->dev,
 830			"%s : SND_SOC_DAPM_POST_PMU\n", __func__);
 831		ret = sma1303_startup(component);
 832		break;
 833	case SND_SOC_DAPM_PRE_PMD:
 834		dev_dbg(sma1303->dev,
 835			"%s : SND_SOC_DAPM_PRE_PMD\n", __func__);
 836		ret = sma1303_shutdown(component);
 837		break;
 838	}
 839	return ret;
 840}
 841
 842static const struct snd_kcontrol_new sma1303_aif_in_source_control =
 843	SOC_DAPM_ENUM("AIF IN Source", sma1303_aif_in_source_enum);
 844static const struct snd_kcontrol_new sma1303_aif_out_source_control =
 845	SOC_DAPM_ENUM("AIF OUT Source", sma1303_aif_out_source_enum);
 846static const struct snd_kcontrol_new sma1303_sdo_control =
 847	SOC_DAPM_SINGLE_VIRT("Switch", 1);
 848static const struct snd_kcontrol_new sma1303_post_scaler_control =
 849	SOC_DAPM_SINGLE_VIRT("Switch", 1);
 850static const struct snd_kcontrol_new sma1303_enable_control =
 851	SOC_DAPM_SINGLE_VIRT("Switch", 1);
 852
 853static const struct snd_kcontrol_new sma1303_snd_controls[] = {
 854	SOC_SINGLE_TLV("Speaker Volume", SMA1303_0A_SPK_VOL,
 855		0, 167, 1, sma1303_spk_tlv),
 856	SOC_SINGLE_BOOL_EXT("Force Mute Switch", 0,
 857		sma1303_force_mute_get, sma1303_force_mute_put),
 858	SOC_SINGLE_EXT("Postscaler Gain", SMA1303_90_POSTSCALER, 1, 0x30, 0,
 859		sma1303_postscaler_get, sma1303_postscaler_put),
 860	SOC_ENUM_EXT("TDM RX Slot Position", sma1303_tdm_slot_enum,
 861			sma1303_tdm_slot_rx_get, sma1303_tdm_slot_rx_put),
 862	SOC_ENUM_EXT("TDM TX Slot Position", sma1303_tdm_slot_enum,
 863			sma1303_tdm_slot_tx_get, sma1303_tdm_slot_tx_put),
 864};
 865
 866static const struct snd_soc_dapm_widget sma1303_dapm_widgets[] = {
 867	/* platform domain */
 868	SND_SOC_DAPM_OUTPUT("SPK"),
 869	SND_SOC_DAPM_INPUT("SDO"),
 870
 871	/* path domain */
 872	SND_SOC_DAPM_MUX_E("AIF IN Source", SND_SOC_NOPM, 0, 0,
 873			&sma1303_aif_in_source_control,
 874			sma1303_aif_in_event,
 875			SND_SOC_DAPM_PRE_PMU),
 876	SND_SOC_DAPM_MUX_E("AIF OUT Source", SND_SOC_NOPM, 0, 0,
 877			&sma1303_aif_out_source_control,
 878			sma1303_aif_out_event,
 879			SND_SOC_DAPM_PRE_PMU),
 880	SND_SOC_DAPM_SWITCH_E("SDO Enable", SND_SOC_NOPM, 0, 0,
 881			&sma1303_sdo_control,
 882			sma1303_sdo_event,
 883			SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
 884	SND_SOC_DAPM_MIXER("Entry", SND_SOC_NOPM, 0, 0, NULL, 0),
 885	SND_SOC_DAPM_SWITCH_E("Post Scaler", SND_SOC_NOPM, 0, 1,
 886			&sma1303_post_scaler_control,
 887			sma1303_post_scaler_event,
 888			SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
 889	SND_SOC_DAPM_OUT_DRV_E("AMP Power", SND_SOC_NOPM, 0, 0, NULL, 0,
 890			sma1303_power_event,
 891			SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD),
 892	SND_SOC_DAPM_SWITCH("AMP Enable", SND_SOC_NOPM, 0, 1,
 893			&sma1303_enable_control),
 894
 895	/* stream domain */
 896	SND_SOC_DAPM_AIF_IN("AIF IN", "Playback", 0, SND_SOC_NOPM, 0, 0),
 897	SND_SOC_DAPM_AIF_OUT("AIF OUT", "Capture", 0, SND_SOC_NOPM, 0, 0),
 898};
 899
 900static const struct snd_soc_dapm_route sma1303_audio_map[] = {
 901	/* Playback */
 902	{"AIF IN Source", "Mono", "AIF IN"},
 903	{"AIF IN Source", "Left", "AIF IN"},
 904	{"AIF IN Source", "Right", "AIF IN"},
 905
 906	{"SDO Enable", "Switch", "AIF IN"},
 907	{"AIF OUT Source", "Disable", "SDO Enable"},
 908	{"AIF OUT Source", "After_FmtC", "SDO Enable"},
 909	{"AIF OUT Source", "After_Mixer", "SDO Enable"},
 910	{"AIF OUT Source", "After_DSP", "SDO Enable"},
 911	{"AIF OUT Source", "After_Post", "SDO Enable"},
 912	{"AIF OUT Source", "Clk_PLL", "SDO Enable"},
 913	{"AIF OUT Source", "Clk_OSC", "SDO Enable"},
 914
 915	{"Entry", NULL, "AIF OUT Source"},
 916	{"Entry", NULL, "AIF IN Source"},
 917
 918	{"Post Scaler", "Switch", "Entry"},
 919	{"AMP Power", NULL, "Entry"},
 920	{"AMP Power", NULL, "Entry"},
 921
 922	{"AMP Enable", "Switch", "AMP Power"},
 923	{"SPK", NULL, "AMP Enable"},
 924
 925	/* Capture */
 926	{"AIF OUT", NULL, "AMP Enable"},
 927};
 928
 929static int sma1303_setup_pll(struct snd_soc_component *component,
 930		unsigned int bclk)
 931{
 932	struct sma1303_priv *sma1303 = snd_soc_component_get_drvdata(component);
 933
 934	int i = 0, ret = 0;
 935
 936	dev_dbg(component->dev, "%s : BCLK = %dHz\n",
 937		__func__, bclk);
 938
 939	if (sma1303->sys_clk_id == SMA1303_PLL_CLKIN_MCLK) {
 940		dev_dbg(component->dev, "%s : MCLK is not supported\n",
 941		__func__);
 942	} else if (sma1303->sys_clk_id == SMA1303_PLL_CLKIN_BCLK) {
 943		for (i = 0; i < sma1303->num_of_pll_matches; i++) {
 944			if (sma1303->pll_matches[i].input_clk == bclk)
 945				break;
 946		}
 947		if (i == sma1303->num_of_pll_matches) {
 948			dev_dbg(component->dev, "%s : No matching value between pll table and SCK\n",
 949					__func__);
 950			return -EINVAL;
 951		}
 952
 953		ret += sma1303_regmap_update_bits(sma1303,
 954				SMA1303_A2_TOP_MAN1,
 955				SMA1303_PLL_PD_MASK|SMA1303_PLL_REF_CLK_MASK,
 956				SMA1303_PLL_OPERATION|SMA1303_PLL_SCK,
 957				NULL);
 958	}
 959
 960	ret += sma1303_regmap_write(sma1303,
 961			SMA1303_8B_PLL_POST_N,
 962			sma1303->pll_matches[i].post_n);
 963
 964	ret += sma1303_regmap_write(sma1303,
 965			SMA1303_8C_PLL_N,
 966			sma1303->pll_matches[i].n);
 967
 968	ret += sma1303_regmap_write(sma1303,
 969			SMA1303_8D_PLL_A_SETTING,
 970			sma1303->pll_matches[i].vco);
 971
 972	ret += sma1303_regmap_write(sma1303,
 973			SMA1303_8F_PLL_P_CP,
 974			sma1303->pll_matches[i].p_cp);
 975	if (ret < 0)
 976		return -EINVAL;
 977
 978	return 0;
 979}
 980
 981static int sma1303_dai_hw_params_amp(struct snd_pcm_substream *substream,
 982		struct snd_pcm_hw_params *params, struct snd_soc_dai *dai)
 983{
 984	struct snd_soc_component *component = dai->component;
 985	struct sma1303_priv *sma1303 = snd_soc_component_get_drvdata(component);
 986	unsigned int bclk = 0;
 987	int ret = 0;
 988
 989	if (sma1303->format == SND_SOC_DAIFMT_DSP_A)
 990		bclk = params_rate(params) * sma1303->frame_size;
 991	else
 992		bclk = params_rate(params) * params_physical_width(params)
 993			* params_channels(params);
 994
 995	dev_dbg(component->dev,
 996			"%s : rate = %d : bit size = %d : channel = %d\n",
 997			__func__, params_rate(params), params_width(params),
 998			params_channels(params));
 999
1000	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
1001		if (sma1303->sys_clk_id == SMA1303_PLL_CLKIN_BCLK) {
1002			if (sma1303->last_bclk != bclk) {
1003				sma1303_setup_pll(component, bclk);
1004				sma1303->last_bclk = bclk;
1005			}
1006		}
1007
1008		switch (params_rate(params)) {
1009		case 8000:
1010		case 12000:
1011		case 16000:
1012		case 24000:
1013		case 32000:
1014		case 44100:
1015		case 48000:
1016		case 96000:
1017			ret += sma1303_regmap_update_bits(sma1303,
1018					SMA1303_A2_TOP_MAN1,
1019					SMA1303_DAC_DN_CONV_MASK,
1020					SMA1303_DAC_DN_CONV_DISABLE,
1021					NULL);
1022
1023			ret += sma1303_regmap_update_bits(sma1303,
1024					SMA1303_01_INPUT1_CTRL1,
1025					SMA1303_LEFTPOL_MASK,
1026					SMA1303_LOW_FIRST_CH,
1027					NULL);
1028			break;
1029
1030		case 192000:
1031			ret += sma1303_regmap_update_bits(sma1303,
1032					SMA1303_A2_TOP_MAN1,
1033					SMA1303_DAC_DN_CONV_MASK,
1034					SMA1303_DAC_DN_CONV_ENABLE,
1035					NULL);
1036
1037			ret += sma1303_regmap_update_bits(sma1303,
1038					SMA1303_01_INPUT1_CTRL1,
1039					SMA1303_LEFTPOL_MASK,
1040					SMA1303_HIGH_FIRST_CH,
1041					NULL);
1042			break;
1043
1044		default:
1045			dev_err(component->dev, "%s not support rate : %d\n",
1046				__func__, params_rate(params));
1047
1048			return -EINVAL;
1049		}
1050
1051	} else {
1052
1053		switch (params_format(params)) {
1054
1055		case SNDRV_PCM_FORMAT_S16_LE:
1056			dev_dbg(component->dev,
1057				"%s set format SNDRV_PCM_FORMAT_S16_LE\n",
1058				__func__);
1059			ret += sma1303_regmap_update_bits(sma1303,
1060					SMA1303_A4_TOP_MAN3,
1061					SMA1303_SCK_RATE_MASK,
1062					SMA1303_SCK_32FS,
1063					NULL);
1064			break;
1065
1066		case SNDRV_PCM_FORMAT_S24_LE:
1067			dev_dbg(component->dev,
1068				"%s set format SNDRV_PCM_FORMAT_S24_LE\n",
1069				__func__);
1070			ret += sma1303_regmap_update_bits(sma1303,
1071					SMA1303_A4_TOP_MAN3,
1072					SMA1303_SCK_RATE_MASK,
1073					SMA1303_SCK_64FS,
1074					NULL);
1075			break;
1076		case SNDRV_PCM_FORMAT_S32_LE:
1077			dev_dbg(component->dev,
1078				"%s set format SNDRV_PCM_FORMAT_S32_LE\n",
1079				__func__);
1080			ret += sma1303_regmap_update_bits(sma1303,
1081					SMA1303_A4_TOP_MAN3,
1082					SMA1303_SCK_RATE_MASK,
1083					SMA1303_SCK_64FS,
1084					NULL);
1085			break;
1086		default:
1087			dev_err(component->dev,
1088				"%s not support data bit : %d\n", __func__,
1089						params_format(params));
1090			return -EINVAL;
1091		}
1092	}
1093
1094	switch (sma1303->format) {
1095	case SND_SOC_DAIFMT_I2S:
1096		ret += sma1303_regmap_update_bits(sma1303,
1097				SMA1303_01_INPUT1_CTRL1,
1098				SMA1303_I2S_MODE_MASK,
1099				SMA1303_STANDARD_I2S,
1100				NULL);
1101		ret += sma1303_regmap_update_bits(sma1303,
1102				SMA1303_A4_TOP_MAN3,
1103				SMA1303_O_FORMAT_MASK,
1104				SMA1303_O_FMT_I2S,
1105				NULL);
1106		break;
1107	case SND_SOC_DAIFMT_LEFT_J:
1108		ret += sma1303_regmap_update_bits(sma1303,
1109				SMA1303_01_INPUT1_CTRL1,
1110				SMA1303_I2S_MODE_MASK,
1111				SMA1303_LJ,
1112				NULL);
1113		ret += sma1303_regmap_update_bits(sma1303,
1114				SMA1303_A4_TOP_MAN3,
1115				SMA1303_O_FORMAT_MASK,
1116				SMA1303_O_FMT_LJ,
1117				NULL);
1118		break;
1119	case SND_SOC_DAIFMT_RIGHT_J:
1120		switch (params_width(params)) {
1121		case 16:
1122			ret += sma1303_regmap_update_bits(sma1303,
1123					SMA1303_01_INPUT1_CTRL1,
1124					SMA1303_I2S_MODE_MASK,
1125					SMA1303_RJ_16BIT,
1126					NULL);
1127			break;
1128		case 24:
1129		case 32:
1130			ret += sma1303_regmap_update_bits(sma1303,
1131					SMA1303_01_INPUT1_CTRL1,
1132					SMA1303_I2S_MODE_MASK,
1133					SMA1303_RJ_24BIT,
1134					NULL);
1135			break;
1136		}
1137		break;
1138	case SND_SOC_DAIFMT_DSP_A:
1139		ret += sma1303_regmap_update_bits(sma1303,
1140				SMA1303_01_INPUT1_CTRL1,
1141				SMA1303_I2S_MODE_MASK,
1142				SMA1303_STANDARD_I2S,
1143				NULL);
1144		ret += sma1303_regmap_update_bits(sma1303,
1145				SMA1303_A4_TOP_MAN3,
1146				SMA1303_O_FORMAT_MASK,
1147				SMA1303_O_FMT_TDM,
1148				NULL);
1149		break;
1150	}
1151
1152	switch (params_width(params)) {
1153	case 16:
1154	case 24:
1155	case 32:
1156		break;
1157	default:
1158		dev_err(component->dev,
1159			"%s not support data bit : %d\n", __func__,
1160					params_format(params));
1161		return -EINVAL;
1162	}
1163	if (ret < 0)
1164		return -EINVAL;
1165
1166	return 0;
1167}
1168
1169static int sma1303_dai_set_sysclk_amp(struct snd_soc_dai *dai,
1170				int clk_id, unsigned int freq, int dir)
1171{
1172	struct snd_soc_component *component = dai->component;
1173	struct sma1303_priv *sma1303 = snd_soc_component_get_drvdata(component);
1174
1175	switch (clk_id) {
1176	case SMA1303_EXTERNAL_CLOCK_19_2:
1177		break;
1178	case SMA1303_EXTERNAL_CLOCK_24_576:
1179		break;
1180	case SMA1303_PLL_CLKIN_MCLK:
1181		break;
1182	case SMA1303_PLL_CLKIN_BCLK:
1183		break;
1184	default:
1185		dev_err(component->dev, "Invalid clk id: %d\n", clk_id);
1186		return -EINVAL;
1187	}
1188	sma1303->sys_clk_id = clk_id;
1189	return 0;
1190}
1191
1192static int sma1303_dai_mute(struct snd_soc_dai *dai, int mute, int stream)
1193{
1194	struct snd_soc_component *component = dai->component;
1195	struct sma1303_priv *sma1303 = snd_soc_component_get_drvdata(component);
1196	int ret = 0;
1197
1198	if (stream == SNDRV_PCM_STREAM_CAPTURE)
1199		return ret;
1200
1201	if (mute) {
1202		dev_dbg(component->dev, "%s : %s\n", __func__, "MUTE");
1203
1204		ret += sma1303_regmap_update_bits(sma1303,
1205				SMA1303_0E_MUTE_VOL_CTRL,
1206				SMA1303_SPK_MUTE_MASK,
1207				SMA1303_SPK_MUTE,
1208				NULL);
1209
1210		/* Need to wait time for mute slope */
1211		msleep(55);
1212	} else {
1213		if (!sma1303->force_mute_status) {
1214			dev_dbg(component->dev, "%s : %s\n",
1215					__func__, "UNMUTE");
1216			ret += sma1303_regmap_update_bits(sma1303,
1217					SMA1303_0E_MUTE_VOL_CTRL,
1218					SMA1303_SPK_MUTE_MASK,
1219					SMA1303_SPK_UNMUTE,
1220					NULL);
1221		} else {
1222			dev_dbg(sma1303->dev,
1223					"%s : FORCE MUTE!!!\n", __func__);
1224		}
1225	}
1226
1227	if (ret < 0)
1228		return -EINVAL;
1229	return 0;
1230}
1231
1232static int sma1303_dai_set_fmt_amp(struct snd_soc_dai *dai,
1233					unsigned int fmt)
1234{
1235	struct snd_soc_component *component  = dai->component;
1236	struct sma1303_priv *sma1303 = snd_soc_component_get_drvdata(component);
1237	int ret = 0;
1238
1239	switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
1240
1241	case SND_SOC_DAIFMT_CBC_CFC:
1242		dev_dbg(component->dev,
1243				"%s : %s\n", __func__, "I2S/TDM Device mode");
1244		ret += sma1303_regmap_update_bits(sma1303,
1245				SMA1303_01_INPUT1_CTRL1,
1246				SMA1303_CONTROLLER_DEVICE_MASK,
1247				SMA1303_DEVICE_MODE,
1248				NULL);
1249		break;
1250
1251	case SND_SOC_DAIFMT_CBP_CFP:
1252		dev_dbg(component->dev,
1253			"%s : %s\n", __func__, "I2S/TDM Controller mode");
1254		ret += sma1303_regmap_update_bits(sma1303,
1255				SMA1303_01_INPUT1_CTRL1,
1256				SMA1303_CONTROLLER_DEVICE_MASK,
1257				SMA1303_CONTROLLER_MODE,
1258				NULL);
1259		break;
1260
1261	default:
1262		dev_err(component->dev,
1263			"Unsupported Controller/Device : 0x%x\n", fmt);
1264		return -EINVAL;
1265	}
1266
1267	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
1268
1269	case SND_SOC_DAIFMT_I2S:
1270	case SND_SOC_DAIFMT_RIGHT_J:
1271	case SND_SOC_DAIFMT_LEFT_J:
1272	case SND_SOC_DAIFMT_DSP_A:
1273	case SND_SOC_DAIFMT_DSP_B:
1274		sma1303->format = fmt & SND_SOC_DAIFMT_FORMAT_MASK;
1275		break;
1276	default:
1277		dev_err(component->dev,
1278			"Unsupported Audio Interface Format : 0x%x\n", fmt);
1279		return -EINVAL;
1280	}
1281
1282	switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
1283
1284	case SND_SOC_DAIFMT_IB_NF:
1285		dev_dbg(component->dev, "%s : %s\n",
1286			__func__, "Invert BCLK + Normal Frame");
1287		ret += sma1303_regmap_update_bits(sma1303,
1288				SMA1303_01_INPUT1_CTRL1,
1289				SMA1303_SCK_RISING_MASK,
1290				SMA1303_SCK_RISING_EDGE,
1291				NULL);
1292		break;
1293	case SND_SOC_DAIFMT_IB_IF:
1294		dev_dbg(component->dev, "%s : %s\n",
1295			__func__, "Invert BCLK + Invert Frame");
1296		ret += sma1303_regmap_update_bits(sma1303,
1297				SMA1303_01_INPUT1_CTRL1,
1298				SMA1303_LEFTPOL_MASK|SMA1303_SCK_RISING_MASK,
1299				SMA1303_HIGH_FIRST_CH|SMA1303_SCK_RISING_EDGE,
1300				NULL);
1301		break;
1302	case SND_SOC_DAIFMT_NB_IF:
1303		dev_dbg(component->dev, "%s : %s\n",
1304			__func__, "Normal BCLK + Invert Frame");
1305		ret += sma1303_regmap_update_bits(sma1303,
1306				SMA1303_01_INPUT1_CTRL1,
1307				SMA1303_LEFTPOL_MASK,
1308				SMA1303_HIGH_FIRST_CH,
1309				NULL);
1310		break;
1311	case SND_SOC_DAIFMT_NB_NF:
1312		dev_dbg(component->dev, "%s : %s\n",
1313			__func__, "Normal BCLK + Normal Frame");
1314		break;
1315	default:
1316		dev_err(component->dev,
1317				"Unsupported Bit & Frameclock : 0x%x\n", fmt);
1318		return -EINVAL;
1319	}
1320
1321	if (ret < 0)
1322		return -EINVAL;
1323	return 0;
1324}
1325
1326static int sma1303_dai_set_tdm_slot(struct snd_soc_dai *dai,
1327				unsigned int tx_mask, unsigned int rx_mask,
1328				int slots, int slot_width)
1329{
1330	struct snd_soc_component *component = dai->component;
1331	struct sma1303_priv *sma1303 = snd_soc_component_get_drvdata(component);
1332	int ret = 0;
1333
1334	dev_dbg(component->dev, "%s : slots = %d, slot_width - %d\n",
1335			__func__, slots, slot_width);
1336
1337	sma1303->frame_size = slot_width * slots;
1338
1339	ret += sma1303_regmap_update_bits(sma1303,
1340				SMA1303_A4_TOP_MAN3,
1341				SMA1303_O_FORMAT_MASK,
1342				SMA1303_O_FMT_TDM,
1343				NULL);
1344
1345	switch (slot_width) {
1346	case 16:
1347		ret += sma1303_regmap_update_bits(sma1303,
1348					SMA1303_A6_TDM2,
1349					SMA1303_TDM_DL_MASK,
1350					SMA1303_TDM_DL_16,
1351					NULL);
1352		break;
1353	case 32:
1354		ret += sma1303_regmap_update_bits(sma1303,
1355					SMA1303_A6_TDM2,
1356					SMA1303_TDM_DL_MASK,
1357					SMA1303_TDM_DL_32,
1358					NULL);
1359		break;
1360	default:
1361		dev_err(component->dev, "%s not support TDM %d slot_width\n",
1362					__func__, slot_width);
1363		break;
1364	}
1365
1366	switch (slots) {
1367	case 4:
1368		ret += sma1303_regmap_update_bits(sma1303,
1369					SMA1303_A6_TDM2,
1370					SMA1303_TDM_N_SLOT_MASK,
1371					SMA1303_TDM_N_SLOT_4,
1372					NULL);
1373		break;
1374	case 8:
1375		ret += sma1303_regmap_update_bits(sma1303,
1376					SMA1303_A6_TDM2,
1377					SMA1303_TDM_N_SLOT_MASK,
1378					SMA1303_TDM_N_SLOT_8,
1379					NULL);
1380		break;
1381	default:
1382		dev_err(component->dev, "%s not support TDM %d slots\n",
1383				__func__, slots);
1384		break;
1385	}
1386
1387	if (sma1303->tdm_slot_rx < slots)
1388		ret += sma1303_regmap_update_bits(sma1303,
1389					SMA1303_A5_TDM1,
1390					SMA1303_TDM_SLOT1_RX_POS_MASK,
1391					(sma1303->tdm_slot_rx) << 3,
1392					NULL);
1393	else
1394		dev_err(component->dev, "%s Incorrect tdm-slot-rx %d set\n",
1395					__func__, sma1303->tdm_slot_rx);
1396
1397	ret += sma1303_regmap_update_bits(sma1303,
1398				SMA1303_A5_TDM1,
1399				SMA1303_TDM_CLK_POL_MASK,
1400				SMA1303_TDM_CLK_POL_RISE,
1401				NULL);
1402
1403	ret += sma1303_regmap_update_bits(sma1303,
1404				SMA1303_A5_TDM1,
1405				SMA1303_TDM_TX_MODE_MASK,
1406				SMA1303_TDM_TX_MONO,
1407				NULL);
1408
1409	if (sma1303->tdm_slot_tx < slots)
1410		ret += sma1303_regmap_update_bits(sma1303,
1411					SMA1303_A6_TDM2,
1412					SMA1303_TDM_SLOT1_TX_POS_MASK,
1413					(sma1303->tdm_slot_tx) << 3,
1414					NULL);
1415	else
1416		dev_err(component->dev, "%s Incorrect tdm-slot-tx %d set\n",
1417				__func__, sma1303->tdm_slot_tx);
1418
1419	if (ret < 0)
1420		return -EINVAL;
1421	return 0;
1422}
1423
1424static const struct snd_soc_dai_ops sma1303_dai_ops_amp = {
1425	.set_sysclk = sma1303_dai_set_sysclk_amp,
1426	.set_fmt = sma1303_dai_set_fmt_amp,
1427	.hw_params = sma1303_dai_hw_params_amp,
1428	.mute_stream = sma1303_dai_mute,
1429	.set_tdm_slot = sma1303_dai_set_tdm_slot,
1430};
1431
1432#define SMA1303_RATES SNDRV_PCM_RATE_8000_192000
1433#define SMA1303_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_LE | \
1434		SNDRV_PCM_FMTBIT_S32_LE)
1435
1436static struct snd_soc_dai_driver sma1303_dai[] = {
1437	{
1438		.name = "sma1303-amplifier",
1439		.id = 0,
1440		.playback = {
1441			.stream_name = "Playback",
1442			.channels_min = 1,
1443			.channels_max = 2,
1444			.rates = SMA1303_RATES,
1445			.formats = SMA1303_FORMATS,
1446		},
1447		.capture = {
1448			.stream_name = "Capture",
1449			.channels_min = 1,
1450			.channels_max = 2,
1451			.rates = SMA1303_RATES,
1452			.formats = SMA1303_FORMATS,
1453		},
1454		.ops = &sma1303_dai_ops_amp,
1455	},
1456};
1457
1458static void sma1303_check_fault_worker(struct work_struct *work)
1459{
1460	struct sma1303_priv *sma1303 =
1461		container_of(work, struct sma1303_priv, check_fault_work.work);
1462	int ret = 0;
1463	unsigned int over_temp, ocp_val, uvlo_val;
1464
1465	if (sma1303->tsdw_cnt)
1466		ret = sma1303_regmap_read(sma1303,
1467			SMA1303_0A_SPK_VOL, &sma1303->cur_vol);
1468	else
1469		ret = sma1303_regmap_read(sma1303,
1470			SMA1303_0A_SPK_VOL, &sma1303->init_vol);
1471
1472	if (ret != 0) {
1473		dev_err(sma1303->dev,
1474			"failed to read SMA1303_0A_SPK_VOL : %d\n", ret);
1475		return;
1476	}
1477
1478	ret = sma1303_regmap_read(sma1303, SMA1303_FA_STATUS1, &over_temp);
1479	if (ret != 0) {
1480		dev_err(sma1303->dev,
1481			"failed to read SMA1303_FA_STATUS1 : %d\n", ret);
1482		return;
1483	}
1484
1485	ret = sma1303_regmap_read(sma1303, SMA1303_FB_STATUS2, &ocp_val);
1486	if (ret != 0) {
1487		dev_err(sma1303->dev,
1488			"failed to read SMA1303_FB_STATUS2 : %d\n", ret);
1489		return;
1490	}
1491
1492	ret = sma1303_regmap_read(sma1303, SMA1303_FF_DEVICE_INDEX, &uvlo_val);
1493	if (ret != 0) {
1494		dev_err(sma1303->dev,
1495			"failed to read SMA1303_FF_DEVICE_INDEX : %d\n", ret);
1496		return;
1497	}
1498
1499	if (~over_temp & SMA1303_OT1_OK_STATUS) {
1500		dev_crit(sma1303->dev,
1501			"%s : OT1(Over Temperature Level 1)\n", __func__);
1502
1503		if ((sma1303->cur_vol + 6) <= 0xFF)
1504			sma1303_regmap_write(sma1303,
1505				SMA1303_0A_SPK_VOL, sma1303->cur_vol + 6);
1506
1507		sma1303->tsdw_cnt++;
1508	} else if (sma1303->tsdw_cnt) {
1509		sma1303_regmap_write(sma1303,
1510				SMA1303_0A_SPK_VOL, sma1303->init_vol);
1511		sma1303->tsdw_cnt = 0;
1512		sma1303->cur_vol = sma1303->init_vol;
1513	}
1514
1515	if (~over_temp & SMA1303_OT2_OK_STATUS) {
1516		dev_crit(sma1303->dev,
1517			"%s : OT2(Over Temperature Level 2)\n", __func__);
1518	}
1519	if (ocp_val & SMA1303_OCP_SPK_STATUS) {
1520		dev_crit(sma1303->dev,
1521			"%s : OCP_SPK(Over Current Protect SPK)\n", __func__);
1522	}
1523	if (ocp_val & SMA1303_OCP_BST_STATUS) {
1524		dev_crit(sma1303->dev,
1525			"%s : OCP_BST(Over Current Protect Boost)\n", __func__);
1526	}
1527	if ((ocp_val & SMA1303_CLK_MON_STATUS) && (sma1303->amp_power_status)) {
1528		dev_crit(sma1303->dev,
1529			"%s : CLK_FAULT(No clock input)\n", __func__);
1530	}
1531	if (uvlo_val & SMA1303_UVLO_BST_STATUS) {
1532		dev_crit(sma1303->dev,
1533			"%s : UVLO(Under Voltage Lock Out)\n", __func__);
1534	}
1535
1536	if ((over_temp != sma1303->last_over_temp) ||
1537		(ocp_val != sma1303->last_ocp_val)) {
1538
1539		dev_crit(sma1303->dev, "Please check AMP status");
1540		dev_dbg(sma1303->dev, "STATUS1=0x%02X : STATUS2=0x%02X\n",
1541				over_temp, ocp_val);
1542		sma1303->last_over_temp = over_temp;
1543		sma1303->last_ocp_val = ocp_val;
1544	}
1545
1546	if (sma1303->check_fault_status) {
1547		if (sma1303->check_fault_period > 0)
1548			queue_delayed_work(system_freezable_wq,
1549				&sma1303->check_fault_work,
1550					sma1303->check_fault_period * HZ);
1551		else
1552			queue_delayed_work(system_freezable_wq,
1553				&sma1303->check_fault_work,
1554					CHECK_PERIOD_TIME * HZ);
1555	}
1556
1557	if (!(~over_temp & SMA1303_OT1_OK_STATUS)
1558			&& !(~over_temp & SMA1303_OT2_OK_STATUS)
1559			&& !(ocp_val & SMA1303_OCP_SPK_STATUS)
1560			&& !(ocp_val & SMA1303_OCP_BST_STATUS)
1561			&& !(ocp_val & SMA1303_CLK_MON_STATUS)
1562			&& !(uvlo_val & SMA1303_UVLO_BST_STATUS)) {
1563	}
1564}
1565
1566static int sma1303_probe(struct snd_soc_component *component)
1567{
1568	struct snd_soc_dapm_context *dapm =
1569		snd_soc_component_get_dapm(component);
1570
1571	snd_soc_dapm_sync(dapm);
1572
1573	return 0;
1574}
1575
1576static void sma1303_remove(struct snd_soc_component *component)
1577{
1578	struct sma1303_priv *sma1303 = snd_soc_component_get_drvdata(component);
1579
1580	cancel_delayed_work_sync(&sma1303->check_fault_work);
1581}
1582
1583static const struct snd_soc_component_driver sma1303_component = {
1584	.probe = sma1303_probe,
1585	.remove = sma1303_remove,
1586	.controls = sma1303_snd_controls,
1587	.num_controls = ARRAY_SIZE(sma1303_snd_controls),
1588	.dapm_widgets = sma1303_dapm_widgets,
1589	.num_dapm_widgets = ARRAY_SIZE(sma1303_dapm_widgets),
1590	.dapm_routes = sma1303_audio_map,
1591	.num_dapm_routes = ARRAY_SIZE(sma1303_audio_map),
1592};
1593
1594static const struct regmap_config sma_i2c_regmap = {
1595	.reg_bits = 8,
1596	.val_bits = 8,
1597
1598	.max_register = SMA1303_FF_DEVICE_INDEX,
1599	.readable_reg = sma1303_readable_register,
1600	.writeable_reg = sma1303_writeable_register,
1601	.volatile_reg = sma1303_volatile_register,
1602
1603	.cache_type = REGCACHE_NONE,
1604	.reg_defaults = sma1303_reg_def,
1605	.num_reg_defaults = ARRAY_SIZE(sma1303_reg_def),
1606};
1607
1608static ssize_t check_fault_period_show(struct device *dev,
1609	struct device_attribute *devattr, char *buf)
1610{
1611	struct sma1303_priv *sma1303 = dev_get_drvdata(dev);
1612
1613	return sysfs_emit(buf, "%ld\n", sma1303->check_fault_period);
1614}
1615
1616static ssize_t check_fault_period_store(struct device *dev,
1617	struct device_attribute *devattr, const char *buf, size_t count)
1618{
1619	struct sma1303_priv *sma1303 = dev_get_drvdata(dev);
1620	int ret;
1621
1622	ret = kstrtol(buf, 10, &sma1303->check_fault_period);
1623
1624	if (ret)
1625		return -EINVAL;
1626
1627	return (ssize_t)count;
1628}
1629
1630static DEVICE_ATTR_RW(check_fault_period);
1631
1632static ssize_t check_fault_status_show(struct device *dev,
1633	struct device_attribute *devattr, char *buf)
1634{
1635	struct sma1303_priv *sma1303 = dev_get_drvdata(dev);
1636
1637	return sysfs_emit(buf, "%ld\n", sma1303->check_fault_status);
1638}
1639
1640static ssize_t check_fault_status_store(struct device *dev,
1641	struct device_attribute *devattr, const char *buf, size_t count)
1642{
1643	struct sma1303_priv *sma1303 = dev_get_drvdata(dev);
1644	int ret;
1645
1646	ret = kstrtol(buf, 10, &sma1303->check_fault_status);
1647
1648	if (ret)
1649		return -EINVAL;
1650
1651	if (sma1303->check_fault_status) {
1652		if (sma1303->check_fault_period > 0)
1653			queue_delayed_work(system_freezable_wq,
1654				&sma1303->check_fault_work,
1655					sma1303->check_fault_period * HZ);
1656		else
1657			queue_delayed_work(system_freezable_wq,
1658				&sma1303->check_fault_work,
1659					CHECK_PERIOD_TIME * HZ);
1660	}
1661
1662	return (ssize_t)count;
1663}
1664
1665static DEVICE_ATTR_RW(check_fault_status);
1666
1667static struct attribute *sma1303_attr[] = {
1668	&dev_attr_check_fault_period.attr,
1669	&dev_attr_check_fault_status.attr,
1670	NULL,
1671};
1672
1673static struct attribute_group sma1303_attr_group = {
1674	.attrs = sma1303_attr,
1675};
1676
1677static int sma1303_i2c_probe(struct i2c_client *client)
1678{
1679	struct sma1303_priv *sma1303;
1680	int ret, i = 0;
1681	unsigned int device_info, status, otp_stat;
1682
1683	sma1303 = devm_kzalloc(&client->dev,
1684				sizeof(struct sma1303_priv), GFP_KERNEL);
1685	if (!sma1303)
1686		return -ENOMEM;
1687	sma1303->dev = &client->dev;
1688
1689	sma1303->regmap = devm_regmap_init_i2c(client, &sma_i2c_regmap);
1690	if (IS_ERR(sma1303->regmap)) {
1691		ret = PTR_ERR(sma1303->regmap);
1692		dev_err(&client->dev,
1693			"Failed to allocate register map: %d\n", ret);
1694
1695		return ret;
1696	}
1697
1698	ret = sma1303_regmap_read(sma1303,
1699			SMA1303_FF_DEVICE_INDEX, &device_info);
1700
1701	if ((ret != 0) || ((device_info & 0xF8) != SMA1303_DEVICE_ID)) {
1702		dev_err(&client->dev, "device initialization error (%d 0x%02X)",
1703				ret, device_info);
1704	}
1705	dev_dbg(&client->dev, "chip version 0x%02X\n", device_info);
1706
1707	ret += sma1303_regmap_update_bits(sma1303,
1708			SMA1303_00_SYSTEM_CTRL,
1709			SMA1303_RESETBYI2C_MASK, SMA1303_RESETBYI2C_RESET,
1710			NULL);
1711
1712	ret += sma1303_regmap_read(sma1303, SMA1303_FF_DEVICE_INDEX, &status);
1713	sma1303->rev_num = status & SMA1303_REV_NUM_STATUS;
1714	if (sma1303->rev_num == SMA1303_REV_NUM_TV0)
1715		dev_dbg(&client->dev, "SMA1303 Trimming Version 0\n");
1716	else if (sma1303->rev_num == SMA1303_REV_NUM_TV1)
1717		dev_dbg(&client->dev, "SMA1303 Trimming Version 1\n");
1718
1719	ret += sma1303_regmap_read(sma1303, SMA1303_FB_STATUS2, &otp_stat);
1720	if (ret < 0)
1721		dev_err(&client->dev,
1722			"failed to read, register: %02X, ret: %d\n",
1723				SMA1303_FF_DEVICE_INDEX, ret);
1724
1725	if (((sma1303->rev_num == SMA1303_REV_NUM_TV0) &&
1726		((otp_stat & 0x0E) == SMA1303_OTP_STAT_OK_0)) ||
1727		((sma1303->rev_num != SMA1303_REV_NUM_TV0) &&
1728		((otp_stat & 0x0C) == SMA1303_OTP_STAT_OK_1)))
1729		dev_dbg(&client->dev, "SMA1303 OTP Status Successful\n");
1730	else
1731		dev_dbg(&client->dev, "SMA1303 OTP Status Fail\n");
1732
1733	for (i = 0; i < (unsigned int)ARRAY_SIZE(sma1303_reg_def); i++)
1734		ret += sma1303_regmap_write(sma1303,
1735				sma1303_reg_def[i].reg,
1736				sma1303_reg_def[i].def);
1737
1738	sma1303->amp_mode = SMA1303_MONO;
1739	sma1303->amp_power_status = false;
1740	sma1303->check_fault_period = CHECK_PERIOD_TIME;
1741	sma1303->check_fault_status = true;
1742	sma1303->force_mute_status = false;
1743	sma1303->init_vol = 0x31;
1744	sma1303->cur_vol = sma1303->init_vol;
1745	sma1303->last_bclk = 0;
1746	sma1303->last_ocp_val = 0x08;
1747	sma1303->last_over_temp = 0xC0;
1748	sma1303->tsdw_cnt = 0;
1749	sma1303->retry_cnt = SMA1303_I2C_RETRY_COUNT;
1750	sma1303->tdm_slot_rx = 0;
1751	sma1303->tdm_slot_tx = 0;
1752	sma1303->sys_clk_id = SMA1303_PLL_CLKIN_BCLK;
1753
1754	sma1303->dev = &client->dev;
1755	sma1303->kobj = &client->dev.kobj;
1756
1757	INIT_DELAYED_WORK(&sma1303->check_fault_work,
1758		sma1303_check_fault_worker);
1759
1760	i2c_set_clientdata(client, sma1303);
1761
1762	sma1303->pll_matches = sma1303_pll_matches;
1763	sma1303->num_of_pll_matches =
1764		ARRAY_SIZE(sma1303_pll_matches);
1765
1766	ret = devm_snd_soc_register_component(&client->dev,
1767			&sma1303_component, sma1303_dai, 1);
1768	if (ret) {
1769		dev_err(&client->dev, "Failed to register component");
1770
1771		return ret;
1772	}
1773
1774	sma1303->attr_grp = &sma1303_attr_group;
1775	ret = sysfs_create_group(sma1303->kobj, sma1303->attr_grp);
1776	if (ret) {
1777		dev_err(&client->dev,
1778			"failed to create attribute group [%d]\n", ret);
1779		sma1303->attr_grp = NULL;
1780	}
1781
1782	return ret;
1783}
1784
1785static void sma1303_i2c_remove(struct i2c_client *client)
1786{
1787	struct sma1303_priv *sma1303 =
1788		(struct sma1303_priv *) i2c_get_clientdata(client);
1789
1790	cancel_delayed_work_sync(&sma1303->check_fault_work);
1791}
1792
1793static const struct i2c_device_id sma1303_i2c_id[] = {
1794	{"sma1303"},
1795	{}
1796};
1797MODULE_DEVICE_TABLE(i2c, sma1303_i2c_id);
1798
1799static const struct of_device_id sma1303_of_match[] = {
1800	{ .compatible = "irondevice,sma1303", },
1801	{ }
1802};
1803MODULE_DEVICE_TABLE(of, sma1303_of_match);
1804
1805static struct i2c_driver sma1303_i2c_driver = {
1806	.driver = {
1807		.name = "sma1303",
1808		.of_match_table = sma1303_of_match,
1809	},
1810	.probe = sma1303_i2c_probe,
1811	.remove = sma1303_i2c_remove,
1812	.id_table = sma1303_i2c_id,
1813};
1814
1815module_i2c_driver(sma1303_i2c_driver);
1816
1817MODULE_DESCRIPTION("ALSA SoC SMA1303 driver");
1818MODULE_AUTHOR("Gyuhwa Park, <gyuhwa.park@irondevice.com>");
1819MODULE_AUTHOR("Kiseok Jo, <kiseok.jo@irondevice.com>");
1820MODULE_LICENSE("GPL v2");