linux/sound/soc/codecs/rt1015.c
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   1// SPDX-License-Identifier: GPL-2.0
   2//
   3// rt1015.c  --  RT1015 ALSA SoC audio amplifier driver
   4//
   5// Copyright 2019 Realtek Semiconductor Corp.
   6//
   7// Author: Jack Yu <jack.yu@realtek.com>
   8//
   9//
  10
  11#include <linux/acpi.h>
  12#include <linux/delay.h>
  13#include <linux/firmware.h>
  14#include <linux/fs.h>
  15#include <linux/gpio.h>
  16#include <linux/i2c.h>
  17#include <linux/init.h>
  18#include <linux/module.h>
  19#include <linux/moduleparam.h>
  20#include <linux/platform_device.h>
  21#include <linux/pm.h>
  22#include <linux/regmap.h>
  23#include <sound/core.h>
  24#include <sound/initval.h>
  25#include <sound/pcm.h>
  26#include <sound/pcm_params.h>
  27#include <sound/rt1015.h>
  28#include <sound/soc-dapm.h>
  29#include <sound/soc.h>
  30#include <sound/tlv.h>
  31
  32#include "rl6231.h"
  33#include "rt1015.h"
  34
  35static const struct rt1015_platform_data i2s_default_platform_data = {
  36        .power_up_delay_ms = 50,
  37};
  38
  39static const struct reg_default rt1015_reg[] = {
  40        { 0x0000, 0x0000 },
  41        { 0x0004, 0xa000 },
  42        { 0x0006, 0x0003 },
  43        { 0x000a, 0x081e },
  44        { 0x000c, 0x0006 },
  45        { 0x000e, 0x0000 },
  46        { 0x0010, 0x0000 },
  47        { 0x0012, 0x0000 },
  48        { 0x0014, 0x0000 },
  49        { 0x0016, 0x0000 },
  50        { 0x0018, 0x0000 },
  51        { 0x0020, 0x8000 },
  52        { 0x0022, 0x8043 },
  53        { 0x0076, 0x0000 },
  54        { 0x0078, 0x0000 },
  55        { 0x007a, 0x0002 },
  56        { 0x007c, 0x10ec },
  57        { 0x007d, 0x1015 },
  58        { 0x00f0, 0x5000 },
  59        { 0x00f2, 0x004c },
  60        { 0x00f3, 0xecfe },
  61        { 0x00f4, 0x0000 },
  62        { 0x00f6, 0x0400 },
  63        { 0x0100, 0x0028 },
  64        { 0x0102, 0xff02 },
  65        { 0x0104, 0xa213 },
  66        { 0x0106, 0x200c },
  67        { 0x010c, 0x0000 },
  68        { 0x010e, 0x0058 },
  69        { 0x0111, 0x0200 },
  70        { 0x0112, 0x0400 },
  71        { 0x0114, 0x0022 },
  72        { 0x0116, 0x0000 },
  73        { 0x0118, 0x0000 },
  74        { 0x011a, 0x0123 },
  75        { 0x011c, 0x4567 },
  76        { 0x0300, 0x203d },
  77        { 0x0302, 0x001e },
  78        { 0x0311, 0x0000 },
  79        { 0x0313, 0x6014 },
  80        { 0x0314, 0x00a2 },
  81        { 0x031a, 0x00a0 },
  82        { 0x031c, 0x001f },
  83        { 0x031d, 0xffff },
  84        { 0x031e, 0x0000 },
  85        { 0x031f, 0x0000 },
  86        { 0x0320, 0x0000 },
  87        { 0x0321, 0x0000 },
  88        { 0x0322, 0xd7df },
  89        { 0x0328, 0x10b2 },
  90        { 0x0329, 0x0175 },
  91        { 0x032a, 0x36ad },
  92        { 0x032b, 0x7e55 },
  93        { 0x032c, 0x0520 },
  94        { 0x032d, 0xaa00 },
  95        { 0x032e, 0x570e },
  96        { 0x0330, 0xe180 },
  97        { 0x0332, 0x0034 },
  98        { 0x0334, 0x0001 },
  99        { 0x0336, 0x0010 },
 100        { 0x0338, 0x0000 },
 101        { 0x04fa, 0x0030 },
 102        { 0x04fc, 0x35c8 },
 103        { 0x04fe, 0x0800 },
 104        { 0x0500, 0x0400 },
 105        { 0x0502, 0x1000 },
 106        { 0x0504, 0x0000 },
 107        { 0x0506, 0x04ff },
 108        { 0x0508, 0x0010 },
 109        { 0x050a, 0x001a },
 110        { 0x0519, 0x1c68 },
 111        { 0x051a, 0x0ccc },
 112        { 0x051b, 0x0666 },
 113        { 0x051d, 0x0000 },
 114        { 0x051f, 0x0000 },
 115        { 0x0536, 0x061c },
 116        { 0x0538, 0x0000 },
 117        { 0x053a, 0x0000 },
 118        { 0x053c, 0x0000 },
 119        { 0x053d, 0x0000 },
 120        { 0x053e, 0x0000 },
 121        { 0x053f, 0x0000 },
 122        { 0x0540, 0x0000 },
 123        { 0x0541, 0x0000 },
 124        { 0x0542, 0x0000 },
 125        { 0x0543, 0x0000 },
 126        { 0x0544, 0x0000 },
 127        { 0x0568, 0x0000 },
 128        { 0x056a, 0x0000 },
 129        { 0x1000, 0x0040 },
 130        { 0x1002, 0x5405 },
 131        { 0x1006, 0x5515 },
 132        { 0x1007, 0x05f7 },
 133        { 0x1009, 0x0b0a },
 134        { 0x100a, 0x00ef },
 135        { 0x100d, 0x0003 },
 136        { 0x1010, 0xa433 },
 137        { 0x1020, 0x0000 },
 138        { 0x1200, 0x5a01 },
 139        { 0x1202, 0x6524 },
 140        { 0x1204, 0x1f00 },
 141        { 0x1206, 0x0000 },
 142        { 0x1208, 0x0000 },
 143        { 0x120a, 0x0000 },
 144        { 0x120c, 0x0000 },
 145        { 0x120e, 0x0000 },
 146        { 0x1210, 0x0000 },
 147        { 0x1212, 0x0000 },
 148        { 0x1300, 0x10a1 },
 149        { 0x1302, 0x12ff },
 150        { 0x1304, 0x0400 },
 151        { 0x1305, 0x0844 },
 152        { 0x1306, 0x4611 },
 153        { 0x1308, 0x555e },
 154        { 0x130a, 0x0000 },
 155        { 0x130c, 0x2000 },
 156        { 0x130e, 0x0100 },
 157        { 0x130f, 0x0001 },
 158        { 0x1310, 0x0000 },
 159        { 0x1312, 0x0000 },
 160        { 0x1314, 0x0000 },
 161        { 0x1316, 0x0000 },
 162        { 0x1318, 0x0000 },
 163        { 0x131a, 0x0000 },
 164        { 0x1322, 0x0029 },
 165        { 0x1323, 0x4a52 },
 166        { 0x1324, 0x002c },
 167        { 0x1325, 0x0b02 },
 168        { 0x1326, 0x002d },
 169        { 0x1327, 0x6b5a },
 170        { 0x1328, 0x002e },
 171        { 0x1329, 0xcbb2 },
 172        { 0x132a, 0x0030 },
 173        { 0x132b, 0x2c0b },
 174        { 0x1330, 0x0031 },
 175        { 0x1331, 0x8c63 },
 176        { 0x1332, 0x0032 },
 177        { 0x1333, 0xecbb },
 178        { 0x1334, 0x0034 },
 179        { 0x1335, 0x4d13 },
 180        { 0x1336, 0x0037 },
 181        { 0x1337, 0x0dc3 },
 182        { 0x1338, 0x003d },
 183        { 0x1339, 0xef7b },
 184        { 0x133a, 0x0044 },
 185        { 0x133b, 0xd134 },
 186        { 0x133c, 0x0047 },
 187        { 0x133d, 0x91e4 },
 188        { 0x133e, 0x004d },
 189        { 0x133f, 0xc370 },
 190        { 0x1340, 0x0053 },
 191        { 0x1341, 0xf4fd },
 192        { 0x1342, 0x0060 },
 193        { 0x1343, 0x5816 },
 194        { 0x1344, 0x006c },
 195        { 0x1345, 0xbb2e },
 196        { 0x1346, 0x0072 },
 197        { 0x1347, 0xecbb },
 198        { 0x1348, 0x0076 },
 199        { 0x1349, 0x5d97 },
 200};
 201
 202static bool rt1015_volatile_register(struct device *dev, unsigned int reg)
 203{
 204        switch (reg) {
 205        case RT1015_RESET:
 206        case RT1015_CLK_DET:
 207        case RT1015_SIL_DET:
 208        case RT1015_VER_ID:
 209        case RT1015_VENDOR_ID:
 210        case RT1015_DEVICE_ID:
 211        case RT1015_PRO_ALT:
 212        case RT1015_MAN_I2C:
 213        case RT1015_DAC3:
 214        case RT1015_VBAT_TEST_OUT1:
 215        case RT1015_VBAT_TEST_OUT2:
 216        case RT1015_VBAT_PROT_ATT:
 217        case RT1015_VBAT_DET_CODE:
 218        case RT1015_SMART_BST_CTRL1:
 219        case RT1015_SPK_DC_DETECT1:
 220        case RT1015_SPK_DC_DETECT4:
 221        case RT1015_SPK_DC_DETECT5:
 222        case RT1015_DC_CALIB_CLSD1:
 223        case RT1015_DC_CALIB_CLSD5:
 224        case RT1015_DC_CALIB_CLSD6:
 225        case RT1015_DC_CALIB_CLSD7:
 226        case RT1015_DC_CALIB_CLSD8:
 227        case RT1015_S_BST_TIMING_INTER1:
 228        case RT1015_OSCK_STA:
 229        case RT1015_MONO_DYNA_CTRL1:
 230        case RT1015_MONO_DYNA_CTRL5:
 231                return true;
 232
 233        default:
 234                return false;
 235        }
 236}
 237
 238static bool rt1015_readable_register(struct device *dev, unsigned int reg)
 239{
 240        switch (reg) {
 241        case RT1015_RESET:
 242        case RT1015_CLK2:
 243        case RT1015_CLK3:
 244        case RT1015_PLL1:
 245        case RT1015_PLL2:
 246        case RT1015_DUM_RW1:
 247        case RT1015_DUM_RW2:
 248        case RT1015_DUM_RW3:
 249        case RT1015_DUM_RW4:
 250        case RT1015_DUM_RW5:
 251        case RT1015_DUM_RW6:
 252        case RT1015_CLK_DET:
 253        case RT1015_SIL_DET:
 254        case RT1015_CUSTOMER_ID:
 255        case RT1015_PCODE_FWVER:
 256        case RT1015_VER_ID:
 257        case RT1015_VENDOR_ID:
 258        case RT1015_DEVICE_ID:
 259        case RT1015_PAD_DRV1:
 260        case RT1015_PAD_DRV2:
 261        case RT1015_GAT_BOOST:
 262        case RT1015_PRO_ALT:
 263        case RT1015_OSCK_STA:
 264        case RT1015_MAN_I2C:
 265        case RT1015_DAC1:
 266        case RT1015_DAC2:
 267        case RT1015_DAC3:
 268        case RT1015_ADC1:
 269        case RT1015_ADC2:
 270        case RT1015_TDM_MASTER:
 271        case RT1015_TDM_TCON:
 272        case RT1015_TDM1_1:
 273        case RT1015_TDM1_2:
 274        case RT1015_TDM1_3:
 275        case RT1015_TDM1_4:
 276        case RT1015_TDM1_5:
 277        case RT1015_MIXER1:
 278        case RT1015_MIXER2:
 279        case RT1015_ANA_PROTECT1:
 280        case RT1015_ANA_CTRL_SEQ1:
 281        case RT1015_ANA_CTRL_SEQ2:
 282        case RT1015_VBAT_DET_DEB:
 283        case RT1015_VBAT_VOLT_DET1:
 284        case RT1015_VBAT_VOLT_DET2:
 285        case RT1015_VBAT_TEST_OUT1:
 286        case RT1015_VBAT_TEST_OUT2:
 287        case RT1015_VBAT_PROT_ATT:
 288        case RT1015_VBAT_DET_CODE:
 289        case RT1015_PWR1:
 290        case RT1015_PWR4:
 291        case RT1015_PWR5:
 292        case RT1015_PWR6:
 293        case RT1015_PWR7:
 294        case RT1015_PWR8:
 295        case RT1015_PWR9:
 296        case RT1015_CLASSD_SEQ:
 297        case RT1015_SMART_BST_CTRL1:
 298        case RT1015_SMART_BST_CTRL2:
 299        case RT1015_ANA_CTRL1:
 300        case RT1015_ANA_CTRL2:
 301        case RT1015_PWR_STATE_CTRL:
 302        case RT1015_MONO_DYNA_CTRL:
 303        case RT1015_MONO_DYNA_CTRL1:
 304        case RT1015_MONO_DYNA_CTRL2:
 305        case RT1015_MONO_DYNA_CTRL3:
 306        case RT1015_MONO_DYNA_CTRL4:
 307        case RT1015_MONO_DYNA_CTRL5:
 308        case RT1015_SPK_VOL:
 309        case RT1015_SHORT_DETTOP1:
 310        case RT1015_SHORT_DETTOP2:
 311        case RT1015_SPK_DC_DETECT1:
 312        case RT1015_SPK_DC_DETECT2:
 313        case RT1015_SPK_DC_DETECT3:
 314        case RT1015_SPK_DC_DETECT4:
 315        case RT1015_SPK_DC_DETECT5:
 316        case RT1015_BAT_RPO_STEP1:
 317        case RT1015_BAT_RPO_STEP2:
 318        case RT1015_BAT_RPO_STEP3:
 319        case RT1015_BAT_RPO_STEP4:
 320        case RT1015_BAT_RPO_STEP5:
 321        case RT1015_BAT_RPO_STEP6:
 322        case RT1015_BAT_RPO_STEP7:
 323        case RT1015_BAT_RPO_STEP8:
 324        case RT1015_BAT_RPO_STEP9:
 325        case RT1015_BAT_RPO_STEP10:
 326        case RT1015_BAT_RPO_STEP11:
 327        case RT1015_BAT_RPO_STEP12:
 328        case RT1015_SPREAD_SPEC1:
 329        case RT1015_SPREAD_SPEC2:
 330        case RT1015_PAD_STATUS:
 331        case RT1015_PADS_PULLING_CTRL1:
 332        case RT1015_PADS_DRIVING:
 333        case RT1015_SYS_RST1:
 334        case RT1015_SYS_RST2:
 335        case RT1015_SYS_GATING1:
 336        case RT1015_TEST_MODE1:
 337        case RT1015_TEST_MODE2:
 338        case RT1015_TIMING_CTRL1:
 339        case RT1015_PLL_INT:
 340        case RT1015_TEST_OUT1:
 341        case RT1015_DC_CALIB_CLSD1:
 342        case RT1015_DC_CALIB_CLSD2:
 343        case RT1015_DC_CALIB_CLSD3:
 344        case RT1015_DC_CALIB_CLSD4:
 345        case RT1015_DC_CALIB_CLSD5:
 346        case RT1015_DC_CALIB_CLSD6:
 347        case RT1015_DC_CALIB_CLSD7:
 348        case RT1015_DC_CALIB_CLSD8:
 349        case RT1015_DC_CALIB_CLSD9:
 350        case RT1015_DC_CALIB_CLSD10:
 351        case RT1015_CLSD_INTERNAL1:
 352        case RT1015_CLSD_INTERNAL2:
 353        case RT1015_CLSD_INTERNAL3:
 354        case RT1015_CLSD_INTERNAL4:
 355        case RT1015_CLSD_INTERNAL5:
 356        case RT1015_CLSD_INTERNAL6:
 357        case RT1015_CLSD_INTERNAL7:
 358        case RT1015_CLSD_INTERNAL8:
 359        case RT1015_CLSD_INTERNAL9:
 360        case RT1015_CLSD_OCP_CTRL:
 361        case RT1015_VREF_LV:
 362        case RT1015_MBIAS1:
 363        case RT1015_MBIAS2:
 364        case RT1015_MBIAS3:
 365        case RT1015_MBIAS4:
 366        case RT1015_VREF_LV1:
 367        case RT1015_S_BST_TIMING_INTER1:
 368        case RT1015_S_BST_TIMING_INTER2:
 369        case RT1015_S_BST_TIMING_INTER3:
 370        case RT1015_S_BST_TIMING_INTER4:
 371        case RT1015_S_BST_TIMING_INTER5:
 372        case RT1015_S_BST_TIMING_INTER6:
 373        case RT1015_S_BST_TIMING_INTER7:
 374        case RT1015_S_BST_TIMING_INTER8:
 375        case RT1015_S_BST_TIMING_INTER9:
 376        case RT1015_S_BST_TIMING_INTER10:
 377        case RT1015_S_BST_TIMING_INTER11:
 378        case RT1015_S_BST_TIMING_INTER12:
 379        case RT1015_S_BST_TIMING_INTER13:
 380        case RT1015_S_BST_TIMING_INTER14:
 381        case RT1015_S_BST_TIMING_INTER15:
 382        case RT1015_S_BST_TIMING_INTER16:
 383        case RT1015_S_BST_TIMING_INTER17:
 384        case RT1015_S_BST_TIMING_INTER18:
 385        case RT1015_S_BST_TIMING_INTER19:
 386        case RT1015_S_BST_TIMING_INTER20:
 387        case RT1015_S_BST_TIMING_INTER21:
 388        case RT1015_S_BST_TIMING_INTER22:
 389        case RT1015_S_BST_TIMING_INTER23:
 390        case RT1015_S_BST_TIMING_INTER24:
 391        case RT1015_S_BST_TIMING_INTER25:
 392        case RT1015_S_BST_TIMING_INTER26:
 393        case RT1015_S_BST_TIMING_INTER27:
 394        case RT1015_S_BST_TIMING_INTER28:
 395        case RT1015_S_BST_TIMING_INTER29:
 396        case RT1015_S_BST_TIMING_INTER30:
 397        case RT1015_S_BST_TIMING_INTER31:
 398        case RT1015_S_BST_TIMING_INTER32:
 399        case RT1015_S_BST_TIMING_INTER33:
 400        case RT1015_S_BST_TIMING_INTER34:
 401        case RT1015_S_BST_TIMING_INTER35:
 402        case RT1015_S_BST_TIMING_INTER36:
 403                return true;
 404
 405        default:
 406                return false;
 407        }
 408}
 409
 410static const DECLARE_TLV_DB_SCALE(dac_vol_tlv, -9525, 75, 0);
 411
 412static const char * const rt1015_din_source_select[] = {
 413        "Left",
 414        "Right",
 415        "Left + Right average",
 416};
 417
 418static SOC_ENUM_SINGLE_DECL(rt1015_mono_lr_sel, RT1015_PAD_DRV2, 4,
 419        rt1015_din_source_select);
 420
 421static const char * const rt1015_boost_mode[] = {
 422        "Bypass", "Adaptive", "Fixed Adaptive"
 423};
 424
 425static SOC_ENUM_SINGLE_DECL(rt1015_boost_mode_enum, 0, 0,
 426        rt1015_boost_mode);
 427
 428static int rt1015_boost_mode_get(struct snd_kcontrol *kcontrol,
 429                struct snd_ctl_elem_value *ucontrol)
 430{
 431        struct snd_soc_component *component =
 432                snd_soc_kcontrol_component(kcontrol);
 433        struct rt1015_priv *rt1015 =
 434                snd_soc_component_get_drvdata(component);
 435
 436        ucontrol->value.integer.value[0] = rt1015->boost_mode;
 437
 438        return 0;
 439}
 440
 441static int rt1015_boost_mode_put(struct snd_kcontrol *kcontrol,
 442                struct snd_ctl_elem_value *ucontrol)
 443{
 444        struct snd_soc_component *component =
 445                snd_soc_kcontrol_component(kcontrol);
 446        struct rt1015_priv *rt1015 =
 447                snd_soc_component_get_drvdata(component);
 448        int boost_mode = ucontrol->value.integer.value[0];
 449
 450        switch (boost_mode) {
 451        case BYPASS:
 452                snd_soc_component_update_bits(component,
 453                        RT1015_SMART_BST_CTRL1, RT1015_ABST_AUTO_EN_MASK |
 454                        RT1015_ABST_FIX_TGT_MASK | RT1015_BYPASS_SWR_REG_MASK,
 455                        RT1015_ABST_REG_MODE | RT1015_ABST_FIX_TGT_DIS |
 456                        RT1015_BYPASS_SWRREG_BYPASS);
 457                break;
 458        case ADAPTIVE:
 459                snd_soc_component_update_bits(component,
 460                        RT1015_SMART_BST_CTRL1, RT1015_ABST_AUTO_EN_MASK |
 461                        RT1015_ABST_FIX_TGT_MASK | RT1015_BYPASS_SWR_REG_MASK,
 462                        RT1015_ABST_AUTO_MODE | RT1015_ABST_FIX_TGT_DIS |
 463                        RT1015_BYPASS_SWRREG_PASS);
 464                break;
 465        case FIXED_ADAPTIVE:
 466                snd_soc_component_update_bits(component,
 467                        RT1015_SMART_BST_CTRL1, RT1015_ABST_AUTO_EN_MASK |
 468                        RT1015_ABST_FIX_TGT_MASK | RT1015_BYPASS_SWR_REG_MASK,
 469                        RT1015_ABST_AUTO_MODE | RT1015_ABST_FIX_TGT_EN |
 470                        RT1015_BYPASS_SWRREG_PASS);
 471                break;
 472        default:
 473                dev_err(component->dev, "Unknown boost control.\n");
 474                return -EINVAL;
 475        }
 476
 477        rt1015->boost_mode = boost_mode;
 478
 479        return 0;
 480}
 481
 482static int rt1015_bypass_boost_get(struct snd_kcontrol *kcontrol,
 483                struct snd_ctl_elem_value *ucontrol)
 484{
 485        struct snd_soc_component *component =
 486                snd_soc_kcontrol_component(kcontrol);
 487        struct rt1015_priv *rt1015 =
 488                snd_soc_component_get_drvdata(component);
 489
 490        ucontrol->value.integer.value[0] = rt1015->bypass_boost;
 491
 492        return 0;
 493}
 494
 495static void rt1015_calibrate(struct rt1015_priv *rt1015)
 496{
 497        struct snd_soc_component *component = rt1015->component;
 498        struct regmap *regmap = rt1015->regmap;
 499
 500        snd_soc_dapm_mutex_lock(&component->dapm);
 501        regcache_cache_bypass(regmap, true);
 502
 503        regmap_write(regmap, RT1015_CLK_DET, 0x0000);
 504        regmap_write(regmap, RT1015_PWR4, 0x00B2);
 505        regmap_write(regmap, RT1015_PWR_STATE_CTRL, 0x0009);
 506        msleep(100);
 507        regmap_write(regmap, RT1015_PWR_STATE_CTRL, 0x000A);
 508        msleep(100);
 509        regmap_write(regmap, RT1015_PWR_STATE_CTRL, 0x000C);
 510        msleep(100);
 511        regmap_write(regmap, RT1015_CLSD_INTERNAL8, 0x2028);
 512        regmap_write(regmap, RT1015_CLSD_INTERNAL9, 0x0140);
 513        regmap_write(regmap, RT1015_PWR_STATE_CTRL, 0x000D);
 514        msleep(300);
 515        regmap_write(regmap, RT1015_PWR_STATE_CTRL, 0x0008);
 516        regmap_write(regmap, RT1015_SYS_RST1, 0x05F5);
 517        regmap_write(regmap, RT1015_CLK_DET, 0x8000);
 518
 519        regcache_cache_bypass(regmap, false);
 520        regcache_mark_dirty(regmap);
 521        regcache_sync(regmap);
 522        snd_soc_dapm_mutex_unlock(&component->dapm);
 523}
 524
 525static int rt1015_bypass_boost_put(struct snd_kcontrol *kcontrol,
 526                struct snd_ctl_elem_value *ucontrol)
 527{
 528        struct snd_soc_component *component =
 529                snd_soc_kcontrol_component(kcontrol);
 530        struct rt1015_priv *rt1015 =
 531                snd_soc_component_get_drvdata(component);
 532
 533        if (rt1015->dac_is_used) {
 534                dev_err(component->dev, "DAC is being used!\n");
 535                return -EBUSY;
 536        }
 537
 538        rt1015->bypass_boost = ucontrol->value.integer.value[0];
 539        if (rt1015->bypass_boost == RT1015_Bypass_Boost &&
 540                        !rt1015->cali_done) {
 541                rt1015_calibrate(rt1015);
 542                rt1015->cali_done = 1;
 543
 544                regmap_write(rt1015->regmap, RT1015_MONO_DYNA_CTRL, 0x0010);
 545        }
 546
 547        return 0;
 548}
 549
 550static const struct snd_kcontrol_new rt1015_snd_controls[] = {
 551        SOC_SINGLE_TLV("DAC Playback Volume", RT1015_DAC1, RT1015_DAC_VOL_SFT,
 552                127, 0, dac_vol_tlv),
 553        SOC_DOUBLE("DAC Playback Switch", RT1015_DAC3,
 554                RT1015_DA_MUTE_SFT, RT1015_DVOL_MUTE_FLAG_SFT, 1, 1),
 555        SOC_ENUM_EXT("Boost Mode", rt1015_boost_mode_enum,
 556                rt1015_boost_mode_get, rt1015_boost_mode_put),
 557        SOC_ENUM("Mono LR Select", rt1015_mono_lr_sel),
 558        SOC_SINGLE_EXT("Bypass Boost", SND_SOC_NOPM, 0, 1, 0,
 559                rt1015_bypass_boost_get, rt1015_bypass_boost_put),
 560};
 561
 562static int rt1015_is_sys_clk_from_pll(struct snd_soc_dapm_widget *source,
 563                         struct snd_soc_dapm_widget *sink)
 564{
 565        struct snd_soc_component *component =
 566                snd_soc_dapm_to_component(source->dapm);
 567        struct rt1015_priv *rt1015 = snd_soc_component_get_drvdata(component);
 568
 569        if (rt1015->sysclk_src == RT1015_SCLK_S_PLL)
 570                return 1;
 571        else
 572                return 0;
 573}
 574
 575static int r1015_dac_event(struct snd_soc_dapm_widget *w,
 576        struct snd_kcontrol *kcontrol, int event)
 577{
 578        struct snd_soc_component *component =
 579                snd_soc_dapm_to_component(w->dapm);
 580        struct rt1015_priv *rt1015 = snd_soc_component_get_drvdata(component);
 581
 582        switch (event) {
 583        case SND_SOC_DAPM_PRE_PMU:
 584                rt1015->dac_is_used = 1;
 585                if (rt1015->bypass_boost == RT1015_Enable_Boost) {
 586                        snd_soc_component_write(component,
 587                                RT1015_SYS_RST1, 0x05f7);
 588                        snd_soc_component_write(component,
 589                                RT1015_SYS_RST2, 0x0b0a);
 590                        snd_soc_component_write(component,
 591                                RT1015_GAT_BOOST, 0xacfe);
 592                        snd_soc_component_write(component,
 593                                RT1015_PWR9, 0xaa00);
 594                        snd_soc_component_write(component,
 595                                RT1015_GAT_BOOST, 0xecfe);
 596                } else {
 597                        snd_soc_component_write(component,
 598                                0x032d, 0xaa60);
 599                        snd_soc_component_write(component,
 600                                RT1015_SYS_RST1, 0x05f7);
 601                        snd_soc_component_write(component,
 602                                RT1015_SYS_RST2, 0x0b0a);
 603                        snd_soc_component_write(component,
 604                                RT1015_PWR_STATE_CTRL, 0x008e);
 605                }
 606                break;
 607
 608        case SND_SOC_DAPM_POST_PMD:
 609                if (rt1015->bypass_boost == RT1015_Enable_Boost) {
 610                        snd_soc_component_write(component,
 611                                RT1015_PWR9, 0xa800);
 612                        snd_soc_component_write(component,
 613                                RT1015_SYS_RST1, 0x05f5);
 614                        snd_soc_component_write(component,
 615                                RT1015_SYS_RST2, 0x0b9a);
 616                } else {
 617                        snd_soc_component_write(component,
 618                                0x032d, 0xaa60);
 619                        snd_soc_component_write(component,
 620                                RT1015_PWR_STATE_CTRL, 0x0088);
 621                        snd_soc_component_write(component,
 622                                RT1015_SYS_RST1, 0x05f5);
 623                        snd_soc_component_write(component,
 624                                RT1015_SYS_RST2, 0x0b9a);
 625                }
 626                rt1015->dac_is_used = 0;
 627                break;
 628
 629        default:
 630                break;
 631        }
 632        return 0;
 633}
 634
 635static int rt1015_amp_drv_event(struct snd_soc_dapm_widget *w,
 636        struct snd_kcontrol *kcontrol, int event)
 637{
 638        struct snd_soc_component *component =
 639                snd_soc_dapm_to_component(w->dapm);
 640        struct rt1015_priv *rt1015 = snd_soc_component_get_drvdata(component);
 641        unsigned int ret, ret2;
 642
 643        switch (event) {
 644        case SND_SOC_DAPM_PRE_PMU:
 645                ret = snd_soc_component_read(component, RT1015_CLK_DET);
 646                ret2 = snd_soc_component_read(component, RT1015_SPK_DC_DETECT1);
 647                if (!((ret >> 15) & 0x1)) {
 648                        snd_soc_component_update_bits(component, RT1015_CLK_DET,
 649                                RT1015_EN_BCLK_DET_MASK, RT1015_EN_BCLK_DET);
 650                        dev_dbg(component->dev, "BCLK Detection Enabled.\n");
 651                }
 652                if (!((ret2 >> 12) & 0x1)) {
 653                        snd_soc_component_update_bits(component, RT1015_SPK_DC_DETECT1,
 654                                RT1015_EN_CLA_D_DC_DET_MASK, RT1015_EN_CLA_D_DC_DET);
 655                        dev_dbg(component->dev, "Class-D DC Detection Enabled.\n");
 656                }
 657                break;
 658        case SND_SOC_DAPM_POST_PMU:
 659                msleep(rt1015->pdata.power_up_delay_ms);
 660                break;
 661        default:
 662                break;
 663        }
 664        return 0;
 665}
 666
 667static const struct snd_soc_dapm_widget rt1015_dapm_widgets[] = {
 668        SND_SOC_DAPM_SUPPLY("PLL", RT1015_PWR1, RT1015_PWR_PLL_BIT, 0,
 669                NULL, 0),
 670        SND_SOC_DAPM_AIF_IN("AIFRX", "AIF Playback", 0, SND_SOC_NOPM, 0, 0),
 671        SND_SOC_DAPM_DAC_E("DAC", NULL, SND_SOC_NOPM, 0, 0,
 672                r1015_dac_event, SND_SOC_DAPM_PRE_PMU |
 673                SND_SOC_DAPM_POST_PMD),
 674        SND_SOC_DAPM_OUT_DRV_E("Amp Drv", SND_SOC_NOPM, 0, 0, NULL, 0,
 675                        rt1015_amp_drv_event, SND_SOC_DAPM_PRE_PMU |
 676                        SND_SOC_DAPM_POST_PMU),
 677        SND_SOC_DAPM_OUTPUT("SPO"),
 678};
 679
 680static const struct snd_soc_dapm_route rt1015_dapm_routes[] = {
 681        { "DAC", NULL, "AIFRX" },
 682        { "DAC", NULL, "PLL", rt1015_is_sys_clk_from_pll},
 683        { "Amp Drv", NULL, "DAC" },
 684        { "SPO", NULL, "Amp Drv" },
 685};
 686
 687static int rt1015_hw_params(struct snd_pcm_substream *substream,
 688        struct snd_pcm_hw_params *params, struct snd_soc_dai *dai)
 689{
 690        struct snd_soc_component *component = dai->component;
 691        struct rt1015_priv *rt1015 = snd_soc_component_get_drvdata(component);
 692        int pre_div, frame_size, lrck;
 693        unsigned int val_len = 0;
 694
 695        lrck = params_rate(params);
 696        pre_div = rl6231_get_clk_info(rt1015->sysclk, lrck);
 697        if (pre_div < 0) {
 698                dev_err(component->dev, "Unsupported clock rate\n");
 699                return -EINVAL;
 700        }
 701
 702        frame_size = snd_soc_params_to_frame_size(params);
 703        if (frame_size < 0) {
 704                dev_err(component->dev, "Unsupported frame size: %d\n",
 705                        frame_size);
 706                return -EINVAL;
 707        }
 708
 709        dev_dbg(component->dev, "pre_div is %d for iis %d\n", pre_div, dai->id);
 710
 711        dev_dbg(component->dev, "lrck is %dHz and pre_div is %d for iis %d\n",
 712                                lrck, pre_div, dai->id);
 713
 714        switch (params_width(params)) {
 715        case 16:
 716                break;
 717        case 20:
 718                val_len = RT1015_I2S_DL_20;
 719                break;
 720        case 24:
 721                val_len = RT1015_I2S_DL_24;
 722                break;
 723        case 8:
 724                val_len = RT1015_I2S_DL_8;
 725                break;
 726        default:
 727                return -EINVAL;
 728        }
 729
 730        snd_soc_component_update_bits(component, RT1015_TDM_MASTER,
 731                RT1015_I2S_DL_MASK, val_len);
 732        snd_soc_component_update_bits(component, RT1015_CLK2,
 733                RT1015_FS_PD_MASK, pre_div << RT1015_FS_PD_SFT);
 734
 735        return 0;
 736}
 737
 738static int rt1015_set_dai_fmt(struct snd_soc_dai *dai, unsigned int fmt)
 739{
 740        struct snd_soc_component *component = dai->component;
 741        unsigned int reg_val = 0, reg_val2 = 0;
 742
 743        switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
 744        case SND_SOC_DAIFMT_CBM_CFM:
 745                reg_val |= RT1015_TCON_TDM_MS_M;
 746                break;
 747        case SND_SOC_DAIFMT_CBS_CFS:
 748                reg_val |= RT1015_TCON_TDM_MS_S;
 749                break;
 750        default:
 751                return -EINVAL;
 752        }
 753
 754        switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
 755        case SND_SOC_DAIFMT_NB_NF:
 756                break;
 757        case SND_SOC_DAIFMT_IB_NF:
 758                reg_val2 |= RT1015_TDM_INV_BCLK;
 759                break;
 760        default:
 761                return -EINVAL;
 762        }
 763
 764        switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 765        case SND_SOC_DAIFMT_I2S:
 766                break;
 767
 768        case SND_SOC_DAIFMT_LEFT_J:
 769                reg_val |= RT1015_I2S_M_DF_LEFT;
 770                break;
 771
 772        case SND_SOC_DAIFMT_DSP_A:
 773                reg_val |= RT1015_I2S_M_DF_PCM_A;
 774                break;
 775
 776        case SND_SOC_DAIFMT_DSP_B:
 777                reg_val |= RT1015_I2S_M_DF_PCM_B;
 778                break;
 779
 780        default:
 781                return -EINVAL;
 782        }
 783
 784        snd_soc_component_update_bits(component, RT1015_TDM_MASTER,
 785                        RT1015_TCON_TDM_MS_MASK | RT1015_I2S_M_DF_MASK,
 786                        reg_val);
 787        snd_soc_component_update_bits(component, RT1015_TDM1_1,
 788                        RT1015_TDM_INV_BCLK_MASK, reg_val2);
 789
 790        return 0;
 791}
 792
 793static int rt1015_set_component_sysclk(struct snd_soc_component *component,
 794                int clk_id, int source, unsigned int freq, int dir)
 795{
 796        struct rt1015_priv *rt1015 = snd_soc_component_get_drvdata(component);
 797        unsigned int reg_val = 0;
 798
 799        if (freq == rt1015->sysclk && clk_id == rt1015->sysclk_src)
 800                return 0;
 801
 802        switch (clk_id) {
 803        case RT1015_SCLK_S_MCLK:
 804                reg_val |= RT1015_CLK_SYS_PRE_SEL_MCLK;
 805                break;
 806
 807        case RT1015_SCLK_S_PLL:
 808                reg_val |= RT1015_CLK_SYS_PRE_SEL_PLL;
 809                break;
 810
 811        default:
 812                dev_err(component->dev, "Invalid clock id (%d)\n", clk_id);
 813                return -EINVAL;
 814        }
 815
 816        rt1015->sysclk = freq;
 817        rt1015->sysclk_src = clk_id;
 818
 819        dev_dbg(component->dev, "Sysclk is %dHz and clock id is %d\n",
 820                freq, clk_id);
 821
 822        snd_soc_component_update_bits(component, RT1015_CLK2,
 823                        RT1015_CLK_SYS_PRE_SEL_MASK, reg_val);
 824
 825        return 0;
 826}
 827
 828static int rt1015_set_component_pll(struct snd_soc_component *component,
 829                int pll_id, int source, unsigned int freq_in,
 830                unsigned int freq_out)
 831{
 832        struct rt1015_priv *rt1015 = snd_soc_component_get_drvdata(component);
 833        struct rl6231_pll_code pll_code;
 834        int ret;
 835
 836        if (!freq_in || !freq_out) {
 837                dev_dbg(component->dev, "PLL disabled\n");
 838
 839                rt1015->pll_in = 0;
 840                rt1015->pll_out = 0;
 841
 842                return 0;
 843        }
 844
 845        if (source == rt1015->pll_src && freq_in == rt1015->pll_in &&
 846                freq_out == rt1015->pll_out)
 847                return 0;
 848
 849        switch (source) {
 850        case RT1015_PLL_S_MCLK:
 851                snd_soc_component_update_bits(component, RT1015_CLK2,
 852                        RT1015_PLL_SEL_MASK, RT1015_PLL_SEL_PLL_SRC2);
 853                break;
 854
 855        case RT1015_PLL_S_BCLK:
 856                snd_soc_component_update_bits(component, RT1015_CLK2,
 857                        RT1015_PLL_SEL_MASK, RT1015_PLL_SEL_BCLK);
 858                break;
 859
 860        default:
 861                dev_err(component->dev, "Unknown PLL Source %d\n", source);
 862                return -EINVAL;
 863        }
 864
 865        ret = rl6231_pll_calc(freq_in, freq_out, &pll_code);
 866        if (ret < 0) {
 867                dev_err(component->dev, "Unsupport input clock %d\n", freq_in);
 868                return ret;
 869        }
 870
 871        dev_dbg(component->dev, "bypass=%d m=%d n=%d k=%d\n",
 872                pll_code.m_bp, (pll_code.m_bp ? 0 : pll_code.m_code),
 873                pll_code.n_code, pll_code.k_code);
 874
 875        snd_soc_component_write(component, RT1015_PLL1,
 876                ((pll_code.m_bp ? 0 : pll_code.m_code) << RT1015_PLL_M_SFT) |
 877                (pll_code.m_bp << RT1015_PLL_M_BP_SFT) |
 878                pll_code.n_code);
 879        snd_soc_component_write(component, RT1015_PLL2,
 880                pll_code.k_code);
 881
 882        rt1015->pll_in = freq_in;
 883        rt1015->pll_out = freq_out;
 884        rt1015->pll_src = source;
 885
 886        return 0;
 887}
 888
 889static int rt1015_set_tdm_slot(struct snd_soc_dai *dai,
 890        unsigned int tx_mask, unsigned int rx_mask, int slots, int slot_width)
 891{
 892        struct snd_soc_component *component = dai->component;
 893        unsigned int val = 0, rx_slotnum, tx_slotnum;
 894        int ret = 0, first_bit;
 895
 896        switch (slots) {
 897        case 2:
 898                val |= RT1015_I2S_TX_2CH;
 899                break;
 900        case 4:
 901                val |= RT1015_I2S_TX_4CH;
 902                break;
 903        case 6:
 904                val |= RT1015_I2S_TX_6CH;
 905                break;
 906        case 8:
 907                val |= RT1015_I2S_TX_8CH;
 908                break;
 909        default:
 910                ret = -EINVAL;
 911                goto _set_tdm_err_;
 912        }
 913
 914        switch (slot_width) {
 915        case 16:
 916                val |= RT1015_I2S_CH_TX_LEN_16B;
 917                break;
 918        case 20:
 919                val |= RT1015_I2S_CH_TX_LEN_20B;
 920                break;
 921        case 24:
 922                val |= RT1015_I2S_CH_TX_LEN_24B;
 923                break;
 924        case 32:
 925                val |= RT1015_I2S_CH_TX_LEN_32B;
 926                break;
 927        default:
 928                ret = -EINVAL;
 929                goto _set_tdm_err_;
 930        }
 931
 932        /* Rx slot configuration */
 933        rx_slotnum = hweight_long(rx_mask);
 934        if (rx_slotnum != 1) {
 935                ret = -EINVAL;
 936                dev_err(component->dev, "too many rx slots or zero slot\n");
 937                goto _set_tdm_err_;
 938        }
 939
 940        /* This is an assumption that the system sends stereo audio to the amplifier typically.
 941         * And the stereo audio is placed in slot 0/2/4/6 as the starting slot.
 942         * The users could select the channel from L/R/L+R by "Mono LR Select" control.
 943         */
 944        first_bit = __ffs(rx_mask);
 945        switch (first_bit) {
 946        case 0:
 947        case 2:
 948        case 4:
 949        case 6:
 950                snd_soc_component_update_bits(component,
 951                        RT1015_TDM1_4,
 952                        RT1015_TDM_I2S_TX_L_DAC1_1_MASK |
 953                        RT1015_TDM_I2S_TX_R_DAC1_1_MASK,
 954                        (first_bit << RT1015_TDM_I2S_TX_L_DAC1_1_SFT) |
 955                        ((first_bit+1) << RT1015_TDM_I2S_TX_R_DAC1_1_SFT));
 956                break;
 957        case 1:
 958        case 3:
 959        case 5:
 960        case 7:
 961                snd_soc_component_update_bits(component,
 962                        RT1015_TDM1_4,
 963                        RT1015_TDM_I2S_TX_L_DAC1_1_MASK |
 964                        RT1015_TDM_I2S_TX_R_DAC1_1_MASK,
 965                        ((first_bit-1) << RT1015_TDM_I2S_TX_L_DAC1_1_SFT) |
 966                        (first_bit << RT1015_TDM_I2S_TX_R_DAC1_1_SFT));
 967                break;
 968        default:
 969                ret = -EINVAL;
 970                goto _set_tdm_err_;
 971        }
 972
 973        /* Tx slot configuration */
 974        tx_slotnum = hweight_long(tx_mask);
 975        if (tx_slotnum) {
 976                ret = -EINVAL;
 977                dev_err(component->dev, "doesn't need to support tx slots\n");
 978                goto _set_tdm_err_;
 979        }
 980
 981        snd_soc_component_update_bits(component, RT1015_TDM1_1,
 982                RT1015_I2S_CH_TX_MASK | RT1015_I2S_CH_RX_MASK |
 983                RT1015_I2S_CH_TX_LEN_MASK | RT1015_I2S_CH_RX_LEN_MASK, val);
 984
 985_set_tdm_err_:
 986        return ret;
 987}
 988
 989static int rt1015_probe(struct snd_soc_component *component)
 990{
 991        struct rt1015_priv *rt1015 =
 992                snd_soc_component_get_drvdata(component);
 993
 994        rt1015->component = component;
 995
 996        return 0;
 997}
 998
 999static void rt1015_remove(struct snd_soc_component *component)
1000{
1001        struct rt1015_priv *rt1015 = snd_soc_component_get_drvdata(component);
1002
1003        regmap_write(rt1015->regmap, RT1015_RESET, 0);
1004}
1005
1006#define RT1015_STEREO_RATES SNDRV_PCM_RATE_8000_192000
1007#define RT1015_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \
1008                        SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S8)
1009
1010static const struct snd_soc_dai_ops rt1015_aif_dai_ops = {
1011        .hw_params = rt1015_hw_params,
1012        .set_fmt = rt1015_set_dai_fmt,
1013        .set_tdm_slot = rt1015_set_tdm_slot,
1014};
1015
1016static struct snd_soc_dai_driver rt1015_dai[] = {
1017        {
1018                .name = "rt1015-aif",
1019                .id = 0,
1020                .playback = {
1021                        .stream_name = "AIF Playback",
1022                        .channels_min = 1,
1023                        .channels_max = 4,
1024                        .rates = RT1015_STEREO_RATES,
1025                        .formats = RT1015_FORMATS,
1026                },
1027                .ops = &rt1015_aif_dai_ops,
1028        }
1029};
1030
1031#ifdef CONFIG_PM
1032static int rt1015_suspend(struct snd_soc_component *component)
1033{
1034        struct rt1015_priv *rt1015 = snd_soc_component_get_drvdata(component);
1035
1036        regcache_cache_only(rt1015->regmap, true);
1037        regcache_mark_dirty(rt1015->regmap);
1038
1039        return 0;
1040}
1041
1042static int rt1015_resume(struct snd_soc_component *component)
1043{
1044        struct rt1015_priv *rt1015 = snd_soc_component_get_drvdata(component);
1045
1046        regcache_cache_only(rt1015->regmap, false);
1047        regcache_sync(rt1015->regmap);
1048
1049        if (rt1015->cali_done)
1050                rt1015_calibrate(rt1015);
1051
1052        return 0;
1053}
1054#else
1055#define rt1015_suspend NULL
1056#define rt1015_resume NULL
1057#endif
1058
1059static const struct snd_soc_component_driver soc_component_dev_rt1015 = {
1060        .probe = rt1015_probe,
1061        .remove = rt1015_remove,
1062        .suspend = rt1015_suspend,
1063        .resume = rt1015_resume,
1064        .controls = rt1015_snd_controls,
1065        .num_controls = ARRAY_SIZE(rt1015_snd_controls),
1066        .dapm_widgets = rt1015_dapm_widgets,
1067        .num_dapm_widgets = ARRAY_SIZE(rt1015_dapm_widgets),
1068        .dapm_routes = rt1015_dapm_routes,
1069        .num_dapm_routes = ARRAY_SIZE(rt1015_dapm_routes),
1070        .set_sysclk = rt1015_set_component_sysclk,
1071        .set_pll = rt1015_set_component_pll,
1072        .use_pmdown_time        = 1,
1073        .endianness             = 1,
1074        .non_legacy_dai_naming  = 1,
1075};
1076
1077static const struct regmap_config rt1015_regmap = {
1078        .reg_bits = 16,
1079        .val_bits = 16,
1080        .max_register = RT1015_S_BST_TIMING_INTER36,
1081        .volatile_reg = rt1015_volatile_register,
1082        .readable_reg = rt1015_readable_register,
1083        .cache_type = REGCACHE_RBTREE,
1084        .reg_defaults = rt1015_reg,
1085        .num_reg_defaults = ARRAY_SIZE(rt1015_reg),
1086};
1087
1088static const struct i2c_device_id rt1015_i2c_id[] = {
1089        { "rt1015", 0 },
1090        { }
1091};
1092MODULE_DEVICE_TABLE(i2c, rt1015_i2c_id);
1093
1094#if defined(CONFIG_OF)
1095static const struct of_device_id rt1015_of_match[] = {
1096        { .compatible = "realtek,rt1015", },
1097        {},
1098};
1099MODULE_DEVICE_TABLE(of, rt1015_of_match);
1100#endif
1101
1102#ifdef CONFIG_ACPI
1103static const struct acpi_device_id rt1015_acpi_match[] = {
1104        {"10EC1015", 0,},
1105        {},
1106};
1107MODULE_DEVICE_TABLE(acpi, rt1015_acpi_match);
1108#endif
1109
1110static void rt1015_parse_dt(struct rt1015_priv *rt1015, struct device *dev)
1111{
1112        device_property_read_u32(dev, "realtek,power-up-delay-ms",
1113                &rt1015->pdata.power_up_delay_ms);
1114}
1115
1116static int rt1015_i2c_probe(struct i2c_client *i2c,
1117        const struct i2c_device_id *id)
1118{
1119        struct rt1015_platform_data *pdata = dev_get_platdata(&i2c->dev);
1120        struct rt1015_priv *rt1015;
1121        int ret;
1122        unsigned int val;
1123
1124        rt1015 = devm_kzalloc(&i2c->dev, sizeof(*rt1015), GFP_KERNEL);
1125        if (!rt1015)
1126                return -ENOMEM;
1127
1128        i2c_set_clientdata(i2c, rt1015);
1129
1130        rt1015->pdata = i2s_default_platform_data;
1131
1132        if (pdata)
1133                rt1015->pdata = *pdata;
1134        else
1135                rt1015_parse_dt(rt1015, &i2c->dev);
1136
1137        rt1015->regmap = devm_regmap_init_i2c(i2c, &rt1015_regmap);
1138        if (IS_ERR(rt1015->regmap)) {
1139                ret = PTR_ERR(rt1015->regmap);
1140                dev_err(&i2c->dev, "Failed to allocate register map: %d\n",
1141                        ret);
1142                return ret;
1143        }
1144
1145        ret = regmap_read(rt1015->regmap, RT1015_DEVICE_ID, &val);
1146        if (ret) {
1147                dev_err(&i2c->dev,
1148                        "Failed to read device register: %d\n", ret);
1149                return ret;
1150        } else if ((val != RT1015_DEVICE_ID_VAL) &&
1151                        (val != RT1015_DEVICE_ID_VAL2)) {
1152                dev_err(&i2c->dev,
1153                        "Device with ID register %x is not rt1015\n", val);
1154                return -ENODEV;
1155        }
1156
1157        return devm_snd_soc_register_component(&i2c->dev,
1158                &soc_component_dev_rt1015,
1159                rt1015_dai, ARRAY_SIZE(rt1015_dai));
1160}
1161
1162static void rt1015_i2c_shutdown(struct i2c_client *client)
1163{
1164        struct rt1015_priv *rt1015 = i2c_get_clientdata(client);
1165
1166        regmap_write(rt1015->regmap, RT1015_RESET, 0);
1167}
1168
1169static struct i2c_driver rt1015_i2c_driver = {
1170        .driver = {
1171                .name = "rt1015",
1172                .of_match_table = of_match_ptr(rt1015_of_match),
1173                .acpi_match_table = ACPI_PTR(rt1015_acpi_match),
1174        },
1175        .probe = rt1015_i2c_probe,
1176        .shutdown = rt1015_i2c_shutdown,
1177        .id_table = rt1015_i2c_id,
1178};
1179module_i2c_driver(rt1015_i2c_driver);
1180
1181MODULE_DESCRIPTION("ASoC RT1015 driver");
1182MODULE_AUTHOR("Jack Yu <jack.yu@realtek.com>");
1183MODULE_LICENSE("GPL v2");
1184