1 // SPDX-License-Identifier: GPL-2.0 2 // Copyright (c) 2017, Maxim Integrated 3 4 #include <linux/acpi.h> 5 #include <linux/i2c.h> 6 #include <linux/module.h> 7 #include <linux/regmap.h> 8 #include <linux/slab.h> 9 #include <linux/cdev.h> 10 #include <sound/pcm.h> 11 #include <sound/pcm_params.h> 12 #include <sound/soc.h> 13 #include <linux/gpio.h> 14 #include <linux/of_gpio.h> 15 #include <sound/tlv.h> 16 #include "max98373.h" 17 18 static struct reg_default max98373_reg[] = { 19 {MAX98373_R2000_SW_RESET, 0x00}, 20 {MAX98373_R2001_INT_RAW1, 0x00}, 21 {MAX98373_R2002_INT_RAW2, 0x00}, 22 {MAX98373_R2003_INT_RAW3, 0x00}, 23 {MAX98373_R2004_INT_STATE1, 0x00}, 24 {MAX98373_R2005_INT_STATE2, 0x00}, 25 {MAX98373_R2006_INT_STATE3, 0x00}, 26 {MAX98373_R2007_INT_FLAG1, 0x00}, 27 {MAX98373_R2008_INT_FLAG2, 0x00}, 28 {MAX98373_R2009_INT_FLAG3, 0x00}, 29 {MAX98373_R200A_INT_EN1, 0x00}, 30 {MAX98373_R200B_INT_EN2, 0x00}, 31 {MAX98373_R200C_INT_EN3, 0x00}, 32 {MAX98373_R200D_INT_FLAG_CLR1, 0x00}, 33 {MAX98373_R200E_INT_FLAG_CLR2, 0x00}, 34 {MAX98373_R200F_INT_FLAG_CLR3, 0x00}, 35 {MAX98373_R2010_IRQ_CTRL, 0x00}, 36 {MAX98373_R2014_THERM_WARN_THRESH, 0x10}, 37 {MAX98373_R2015_THERM_SHDN_THRESH, 0x27}, 38 {MAX98373_R2016_THERM_HYSTERESIS, 0x01}, 39 {MAX98373_R2017_THERM_FOLDBACK_SET, 0xC0}, 40 {MAX98373_R2018_THERM_FOLDBACK_EN, 0x00}, 41 {MAX98373_R201E_PIN_DRIVE_STRENGTH, 0x55}, 42 {MAX98373_R2020_PCM_TX_HIZ_EN_1, 0xFE}, 43 {MAX98373_R2021_PCM_TX_HIZ_EN_2, 0xFF}, 44 {MAX98373_R2022_PCM_TX_SRC_1, 0x00}, 45 {MAX98373_R2023_PCM_TX_SRC_2, 0x00}, 46 {MAX98373_R2024_PCM_DATA_FMT_CFG, 0xC0}, 47 {MAX98373_R2025_AUDIO_IF_MODE, 0x00}, 48 {MAX98373_R2026_PCM_CLOCK_RATIO, 0x04}, 49 {MAX98373_R2027_PCM_SR_SETUP_1, 0x08}, 50 {MAX98373_R2028_PCM_SR_SETUP_2, 0x88}, 51 {MAX98373_R2029_PCM_TO_SPK_MONO_MIX_1, 0x00}, 52 {MAX98373_R202A_PCM_TO_SPK_MONO_MIX_2, 0x00}, 53 {MAX98373_R202B_PCM_RX_EN, 0x00}, 54 {MAX98373_R202C_PCM_TX_EN, 0x00}, 55 {MAX98373_R202E_ICC_RX_CH_EN_1, 0x00}, 56 {MAX98373_R202F_ICC_RX_CH_EN_2, 0x00}, 57 {MAX98373_R2030_ICC_TX_HIZ_EN_1, 0xFF}, 58 {MAX98373_R2031_ICC_TX_HIZ_EN_2, 0xFF}, 59 {MAX98373_R2032_ICC_LINK_EN_CFG, 0x30}, 60 {MAX98373_R2034_ICC_TX_CNTL, 0x00}, 61 {MAX98373_R2035_ICC_TX_EN, 0x00}, 62 {MAX98373_R2036_SOUNDWIRE_CTRL, 0x05}, 63 {MAX98373_R203D_AMP_DIG_VOL_CTRL, 0x00}, 64 {MAX98373_R203E_AMP_PATH_GAIN, 0x08}, 65 {MAX98373_R203F_AMP_DSP_CFG, 0x02}, 66 {MAX98373_R2040_TONE_GEN_CFG, 0x00}, 67 {MAX98373_R2041_AMP_CFG, 0x03}, 68 {MAX98373_R2042_AMP_EDGE_RATE_CFG, 0x00}, 69 {MAX98373_R2043_AMP_EN, 0x00}, 70 {MAX98373_R2046_IV_SENSE_ADC_DSP_CFG, 0x04}, 71 {MAX98373_R2047_IV_SENSE_ADC_EN, 0x00}, 72 {MAX98373_R2051_MEAS_ADC_SAMPLING_RATE, 0x00}, 73 {MAX98373_R2052_MEAS_ADC_PVDD_FLT_CFG, 0x00}, 74 {MAX98373_R2053_MEAS_ADC_THERM_FLT_CFG, 0x00}, 75 {MAX98373_R2054_MEAS_ADC_PVDD_CH_READBACK, 0x00}, 76 {MAX98373_R2055_MEAS_ADC_THERM_CH_READBACK, 0x00}, 77 {MAX98373_R2056_MEAS_ADC_PVDD_CH_EN, 0x00}, 78 {MAX98373_R2090_BDE_LVL_HOLD, 0x00}, 79 {MAX98373_R2091_BDE_GAIN_ATK_REL_RATE, 0x00}, 80 {MAX98373_R2092_BDE_CLIPPER_MODE, 0x00}, 81 {MAX98373_R2097_BDE_L1_THRESH, 0x00}, 82 {MAX98373_R2098_BDE_L2_THRESH, 0x00}, 83 {MAX98373_R2099_BDE_L3_THRESH, 0x00}, 84 {MAX98373_R209A_BDE_L4_THRESH, 0x00}, 85 {MAX98373_R209B_BDE_THRESH_HYST, 0x00}, 86 {MAX98373_R20A8_BDE_L1_CFG_1, 0x00}, 87 {MAX98373_R20A9_BDE_L1_CFG_2, 0x00}, 88 {MAX98373_R20AA_BDE_L1_CFG_3, 0x00}, 89 {MAX98373_R20AB_BDE_L2_CFG_1, 0x00}, 90 {MAX98373_R20AC_BDE_L2_CFG_2, 0x00}, 91 {MAX98373_R20AD_BDE_L2_CFG_3, 0x00}, 92 {MAX98373_R20AE_BDE_L3_CFG_1, 0x00}, 93 {MAX98373_R20AF_BDE_L3_CFG_2, 0x00}, 94 {MAX98373_R20B0_BDE_L3_CFG_3, 0x00}, 95 {MAX98373_R20B1_BDE_L4_CFG_1, 0x00}, 96 {MAX98373_R20B2_BDE_L4_CFG_2, 0x00}, 97 {MAX98373_R20B3_BDE_L4_CFG_3, 0x00}, 98 {MAX98373_R20B4_BDE_INFINITE_HOLD_RELEASE, 0x00}, 99 {MAX98373_R20B5_BDE_EN, 0x00}, 100 {MAX98373_R20B6_BDE_CUR_STATE_READBACK, 0x00}, 101 {MAX98373_R20D1_DHT_CFG, 0x01}, 102 {MAX98373_R20D2_DHT_ATTACK_CFG, 0x02}, 103 {MAX98373_R20D3_DHT_RELEASE_CFG, 0x03}, 104 {MAX98373_R20D4_DHT_EN, 0x00}, 105 {MAX98373_R20E0_LIMITER_THRESH_CFG, 0x00}, 106 {MAX98373_R20E1_LIMITER_ATK_REL_RATES, 0x00}, 107 {MAX98373_R20E2_LIMITER_EN, 0x00}, 108 {MAX98373_R20FE_DEVICE_AUTO_RESTART_CFG, 0x00}, 109 {MAX98373_R20FF_GLOBAL_SHDN, 0x00}, 110 {MAX98373_R21FF_REV_ID, 0x42}, 111 }; 112 113 static int max98373_dai_set_fmt(struct snd_soc_dai *codec_dai, unsigned int fmt) 114 { 115 struct snd_soc_component *component = codec_dai->component; 116 struct max98373_priv *max98373 = snd_soc_component_get_drvdata(component); 117 unsigned int format = 0; 118 unsigned int invert = 0; 119 120 dev_dbg(component->dev, "%s: fmt 0x%08X\n", __func__, fmt); 121 122 switch (fmt & SND_SOC_DAIFMT_INV_MASK) { 123 case SND_SOC_DAIFMT_NB_NF: 124 break; 125 case SND_SOC_DAIFMT_IB_NF: 126 invert = MAX98373_PCM_MODE_CFG_PCM_BCLKEDGE; 127 break; 128 default: 129 dev_err(component->dev, "DAI invert mode unsupported\n"); 130 return -EINVAL; 131 } 132 133 regmap_update_bits(max98373->regmap, 134 MAX98373_R2026_PCM_CLOCK_RATIO, 135 MAX98373_PCM_MODE_CFG_PCM_BCLKEDGE, 136 invert); 137 138 /* interface format */ 139 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { 140 case SND_SOC_DAIFMT_I2S: 141 format = MAX98373_PCM_FORMAT_I2S; 142 break; 143 case SND_SOC_DAIFMT_LEFT_J: 144 format = MAX98373_PCM_FORMAT_LJ; 145 break; 146 case SND_SOC_DAIFMT_DSP_A: 147 format = MAX98373_PCM_FORMAT_TDM_MODE1; 148 break; 149 case SND_SOC_DAIFMT_DSP_B: 150 format = MAX98373_PCM_FORMAT_TDM_MODE0; 151 break; 152 default: 153 return -EINVAL; 154 } 155 156 regmap_update_bits(max98373->regmap, 157 MAX98373_R2024_PCM_DATA_FMT_CFG, 158 MAX98373_PCM_MODE_CFG_FORMAT_MASK, 159 format << MAX98373_PCM_MODE_CFG_FORMAT_SHIFT); 160 161 return 0; 162 } 163 164 /* BCLKs per LRCLK */ 165 static const int bclk_sel_table[] = { 166 32, 48, 64, 96, 128, 192, 256, 384, 512, 320, 167 }; 168 169 static int max98373_get_bclk_sel(int bclk) 170 { 171 int i; 172 /* match BCLKs per LRCLK */ 173 for (i = 0; i < ARRAY_SIZE(bclk_sel_table); i++) { 174 if (bclk_sel_table[i] == bclk) 175 return i + 2; 176 } 177 return 0; 178 } 179 180 static int max98373_set_clock(struct snd_soc_component *component, 181 struct snd_pcm_hw_params *params) 182 { 183 struct max98373_priv *max98373 = snd_soc_component_get_drvdata(component); 184 /* BCLK/LRCLK ratio calculation */ 185 int blr_clk_ratio = params_channels(params) * max98373->ch_size; 186 int value; 187 188 if (!max98373->tdm_mode) { 189 /* BCLK configuration */ 190 value = max98373_get_bclk_sel(blr_clk_ratio); 191 if (!value) { 192 dev_err(component->dev, "format unsupported %d\n", 193 params_format(params)); 194 return -EINVAL; 195 } 196 197 regmap_update_bits(max98373->regmap, 198 MAX98373_R2026_PCM_CLOCK_RATIO, 199 MAX98373_PCM_CLK_SETUP_BSEL_MASK, 200 value); 201 } 202 return 0; 203 } 204 205 static int max98373_dai_hw_params(struct snd_pcm_substream *substream, 206 struct snd_pcm_hw_params *params, 207 struct snd_soc_dai *dai) 208 { 209 struct snd_soc_component *component = dai->component; 210 struct max98373_priv *max98373 = snd_soc_component_get_drvdata(component); 211 unsigned int sampling_rate = 0; 212 unsigned int chan_sz = 0; 213 214 /* pcm mode configuration */ 215 switch (snd_pcm_format_width(params_format(params))) { 216 case 16: 217 chan_sz = MAX98373_PCM_MODE_CFG_CHANSZ_16; 218 break; 219 case 24: 220 chan_sz = MAX98373_PCM_MODE_CFG_CHANSZ_24; 221 break; 222 case 32: 223 chan_sz = MAX98373_PCM_MODE_CFG_CHANSZ_32; 224 break; 225 default: 226 dev_err(component->dev, "format unsupported %d\n", 227 params_format(params)); 228 goto err; 229 } 230 231 max98373->ch_size = snd_pcm_format_width(params_format(params)); 232 233 regmap_update_bits(max98373->regmap, 234 MAX98373_R2024_PCM_DATA_FMT_CFG, 235 MAX98373_PCM_MODE_CFG_CHANSZ_MASK, chan_sz); 236 237 dev_dbg(component->dev, "format supported %d", 238 params_format(params)); 239 240 /* sampling rate configuration */ 241 switch (params_rate(params)) { 242 case 8000: 243 sampling_rate = MAX98373_PCM_SR_SET1_SR_8000; 244 break; 245 case 11025: 246 sampling_rate = MAX98373_PCM_SR_SET1_SR_11025; 247 break; 248 case 12000: 249 sampling_rate = MAX98373_PCM_SR_SET1_SR_12000; 250 break; 251 case 16000: 252 sampling_rate = MAX98373_PCM_SR_SET1_SR_16000; 253 break; 254 case 22050: 255 sampling_rate = MAX98373_PCM_SR_SET1_SR_22050; 256 break; 257 case 24000: 258 sampling_rate = MAX98373_PCM_SR_SET1_SR_24000; 259 break; 260 case 32000: 261 sampling_rate = MAX98373_PCM_SR_SET1_SR_32000; 262 break; 263 case 44100: 264 sampling_rate = MAX98373_PCM_SR_SET1_SR_44100; 265 break; 266 case 48000: 267 sampling_rate = MAX98373_PCM_SR_SET1_SR_48000; 268 break; 269 default: 270 dev_err(component->dev, "rate %d not supported\n", 271 params_rate(params)); 272 goto err; 273 } 274 275 /* set DAI_SR to correct LRCLK frequency */ 276 regmap_update_bits(max98373->regmap, 277 MAX98373_R2027_PCM_SR_SETUP_1, 278 MAX98373_PCM_SR_SET1_SR_MASK, 279 sampling_rate); 280 regmap_update_bits(max98373->regmap, 281 MAX98373_R2028_PCM_SR_SETUP_2, 282 MAX98373_PCM_SR_SET2_SR_MASK, 283 sampling_rate << MAX98373_PCM_SR_SET2_SR_SHIFT); 284 285 /* set sampling rate of IV */ 286 if (max98373->interleave_mode && 287 sampling_rate > MAX98373_PCM_SR_SET1_SR_16000) 288 regmap_update_bits(max98373->regmap, 289 MAX98373_R2028_PCM_SR_SETUP_2, 290 MAX98373_PCM_SR_SET2_IVADC_SR_MASK, 291 sampling_rate - 3); 292 else 293 regmap_update_bits(max98373->regmap, 294 MAX98373_R2028_PCM_SR_SETUP_2, 295 MAX98373_PCM_SR_SET2_IVADC_SR_MASK, 296 sampling_rate); 297 298 return max98373_set_clock(component, params); 299 err: 300 return -EINVAL; 301 } 302 303 static int max98373_dai_tdm_slot(struct snd_soc_dai *dai, 304 unsigned int tx_mask, unsigned int rx_mask, 305 int slots, int slot_width) 306 { 307 struct snd_soc_component *component = dai->component; 308 struct max98373_priv *max98373 = snd_soc_component_get_drvdata(component); 309 int bsel = 0; 310 unsigned int chan_sz = 0; 311 unsigned int mask; 312 int x, slot_found; 313 314 if (!tx_mask && !rx_mask && !slots && !slot_width) 315 max98373->tdm_mode = false; 316 else 317 max98373->tdm_mode = true; 318 319 /* BCLK configuration */ 320 bsel = max98373_get_bclk_sel(slots * slot_width); 321 if (bsel == 0) { 322 dev_err(component->dev, "BCLK %d not supported\n", 323 slots * slot_width); 324 return -EINVAL; 325 } 326 327 regmap_update_bits(max98373->regmap, 328 MAX98373_R2026_PCM_CLOCK_RATIO, 329 MAX98373_PCM_CLK_SETUP_BSEL_MASK, 330 bsel); 331 332 /* Channel size configuration */ 333 switch (slot_width) { 334 case 16: 335 chan_sz = MAX98373_PCM_MODE_CFG_CHANSZ_16; 336 break; 337 case 24: 338 chan_sz = MAX98373_PCM_MODE_CFG_CHANSZ_24; 339 break; 340 case 32: 341 chan_sz = MAX98373_PCM_MODE_CFG_CHANSZ_32; 342 break; 343 default: 344 dev_err(component->dev, "format unsupported %d\n", 345 slot_width); 346 return -EINVAL; 347 } 348 349 regmap_update_bits(max98373->regmap, 350 MAX98373_R2024_PCM_DATA_FMT_CFG, 351 MAX98373_PCM_MODE_CFG_CHANSZ_MASK, chan_sz); 352 353 /* Rx slot configuration */ 354 slot_found = 0; 355 mask = rx_mask; 356 for (x = 0 ; x < 16 ; x++, mask >>= 1) { 357 if (mask & 0x1) { 358 if (slot_found == 0) 359 regmap_update_bits(max98373->regmap, 360 MAX98373_R2029_PCM_TO_SPK_MONO_MIX_1, 361 MAX98373_PCM_TO_SPK_CH0_SRC_MASK, x); 362 else 363 regmap_write(max98373->regmap, 364 MAX98373_R202A_PCM_TO_SPK_MONO_MIX_2, 365 x); 366 slot_found++; 367 if (slot_found > 1) 368 break; 369 } 370 } 371 372 /* Tx slot Hi-Z configuration */ 373 regmap_write(max98373->regmap, 374 MAX98373_R2020_PCM_TX_HIZ_EN_1, 375 ~tx_mask & 0xFF); 376 regmap_write(max98373->regmap, 377 MAX98373_R2021_PCM_TX_HIZ_EN_2, 378 (~tx_mask & 0xFF00) >> 8); 379 380 return 0; 381 } 382 383 #define MAX98373_RATES SNDRV_PCM_RATE_8000_96000 384 385 #define MAX98373_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | \ 386 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE) 387 388 static const struct snd_soc_dai_ops max98373_dai_ops = { 389 .set_fmt = max98373_dai_set_fmt, 390 .hw_params = max98373_dai_hw_params, 391 .set_tdm_slot = max98373_dai_tdm_slot, 392 }; 393 394 static int max98373_dac_event(struct snd_soc_dapm_widget *w, 395 struct snd_kcontrol *kcontrol, int event) 396 { 397 struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm); 398 struct max98373_priv *max98373 = snd_soc_component_get_drvdata(component); 399 400 switch (event) { 401 case SND_SOC_DAPM_POST_PMU: 402 regmap_update_bits(max98373->regmap, 403 MAX98373_R20FF_GLOBAL_SHDN, 404 MAX98373_GLOBAL_EN_MASK, 1); 405 break; 406 case SND_SOC_DAPM_POST_PMD: 407 regmap_update_bits(max98373->regmap, 408 MAX98373_R20FF_GLOBAL_SHDN, 409 MAX98373_GLOBAL_EN_MASK, 0); 410 max98373->tdm_mode = 0; 411 break; 412 default: 413 return 0; 414 } 415 return 0; 416 } 417 418 static const char * const max98373_switch_text[] = { 419 "Left", "Right", "LeftRight"}; 420 421 static const struct soc_enum dai_sel_enum = 422 SOC_ENUM_SINGLE(MAX98373_R2029_PCM_TO_SPK_MONO_MIX_1, 423 MAX98373_PCM_TO_SPK_MONOMIX_CFG_SHIFT, 424 3, max98373_switch_text); 425 426 static const struct snd_kcontrol_new max98373_dai_controls = 427 SOC_DAPM_ENUM("DAI Sel", dai_sel_enum); 428 429 static const struct snd_kcontrol_new max98373_vi_control = 430 SOC_DAPM_SINGLE("Switch", MAX98373_R202C_PCM_TX_EN, 0, 1, 0); 431 432 static const struct snd_kcontrol_new max98373_spkfb_control = 433 SOC_DAPM_SINGLE("Switch", MAX98373_R2043_AMP_EN, 1, 1, 0); 434 435 static const struct snd_soc_dapm_widget max98373_dapm_widgets[] = { 436 SND_SOC_DAPM_DAC_E("Amp Enable", "HiFi Playback", 437 MAX98373_R202B_PCM_RX_EN, 0, 0, max98373_dac_event, 438 SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_POST_PMD), 439 SND_SOC_DAPM_MUX("DAI Sel Mux", SND_SOC_NOPM, 0, 0, 440 &max98373_dai_controls), 441 SND_SOC_DAPM_OUTPUT("BE_OUT"), 442 SND_SOC_DAPM_AIF_OUT("Voltage Sense", "HiFi Capture", 0, 443 MAX98373_R2047_IV_SENSE_ADC_EN, 0, 0), 444 SND_SOC_DAPM_AIF_OUT("Current Sense", "HiFi Capture", 0, 445 MAX98373_R2047_IV_SENSE_ADC_EN, 1, 0), 446 SND_SOC_DAPM_AIF_OUT("Speaker FB Sense", "HiFi Capture", 0, 447 SND_SOC_NOPM, 0, 0), 448 SND_SOC_DAPM_SWITCH("VI Sense", SND_SOC_NOPM, 0, 0, 449 &max98373_vi_control), 450 SND_SOC_DAPM_SWITCH("SpkFB Sense", SND_SOC_NOPM, 0, 0, 451 &max98373_spkfb_control), 452 SND_SOC_DAPM_SIGGEN("VMON"), 453 SND_SOC_DAPM_SIGGEN("IMON"), 454 SND_SOC_DAPM_SIGGEN("FBMON"), 455 }; 456 457 static DECLARE_TLV_DB_SCALE(max98373_digital_tlv, 0, -50, 0); 458 static const DECLARE_TLV_DB_RANGE(max98373_spk_tlv, 459 0, 8, TLV_DB_SCALE_ITEM(0, 50, 0), 460 9, 10, TLV_DB_SCALE_ITEM(500, 100, 0), 461 ); 462 static const DECLARE_TLV_DB_RANGE(max98373_spkgain_max_tlv, 463 0, 9, TLV_DB_SCALE_ITEM(800, 100, 0), 464 ); 465 static const DECLARE_TLV_DB_RANGE(max98373_dht_step_size_tlv, 466 0, 1, TLV_DB_SCALE_ITEM(25, 25, 0), 467 2, 4, TLV_DB_SCALE_ITEM(100, 100, 0), 468 ); 469 static const DECLARE_TLV_DB_RANGE(max98373_dht_spkgain_min_tlv, 470 0, 9, TLV_DB_SCALE_ITEM(800, 100, 0), 471 ); 472 static const DECLARE_TLV_DB_RANGE(max98373_dht_rotation_point_tlv, 473 0, 1, TLV_DB_SCALE_ITEM(-50, -50, 0), 474 2, 7, TLV_DB_SCALE_ITEM(-200, -100, 0), 475 8, 9, TLV_DB_SCALE_ITEM(-1000, -200, 0), 476 10, 11, TLV_DB_SCALE_ITEM(-1500, -300, 0), 477 12, 13, TLV_DB_SCALE_ITEM(-2000, -200, 0), 478 14, 15, TLV_DB_SCALE_ITEM(-2500, -500, 0), 479 ); 480 static const DECLARE_TLV_DB_RANGE(max98373_limiter_thresh_tlv, 481 0, 15, TLV_DB_SCALE_ITEM(0, -100, 0), 482 ); 483 484 static const DECLARE_TLV_DB_RANGE(max98373_bde_gain_tlv, 485 0, 60, TLV_DB_SCALE_ITEM(0, -25, 0), 486 ); 487 488 static bool max98373_readable_register(struct device *dev, unsigned int reg) 489 { 490 switch (reg) { 491 case MAX98373_R2000_SW_RESET: 492 case MAX98373_R2001_INT_RAW1 ... MAX98373_R200C_INT_EN3: 493 case MAX98373_R2010_IRQ_CTRL: 494 case MAX98373_R2014_THERM_WARN_THRESH 495 ... MAX98373_R2018_THERM_FOLDBACK_EN: 496 case MAX98373_R201E_PIN_DRIVE_STRENGTH 497 ... MAX98373_R2036_SOUNDWIRE_CTRL: 498 case MAX98373_R203D_AMP_DIG_VOL_CTRL ... MAX98373_R2043_AMP_EN: 499 case MAX98373_R2046_IV_SENSE_ADC_DSP_CFG 500 ... MAX98373_R2047_IV_SENSE_ADC_EN: 501 case MAX98373_R2051_MEAS_ADC_SAMPLING_RATE 502 ... MAX98373_R2056_MEAS_ADC_PVDD_CH_EN: 503 case MAX98373_R2090_BDE_LVL_HOLD ... MAX98373_R2092_BDE_CLIPPER_MODE: 504 case MAX98373_R2097_BDE_L1_THRESH 505 ... MAX98373_R209B_BDE_THRESH_HYST: 506 case MAX98373_R20A8_BDE_L1_CFG_1 ... MAX98373_R20B3_BDE_L4_CFG_3: 507 case MAX98373_R20B5_BDE_EN ... MAX98373_R20B6_BDE_CUR_STATE_READBACK: 508 case MAX98373_R20D1_DHT_CFG ... MAX98373_R20D4_DHT_EN: 509 case MAX98373_R20E0_LIMITER_THRESH_CFG ... MAX98373_R20E2_LIMITER_EN: 510 case MAX98373_R20FE_DEVICE_AUTO_RESTART_CFG 511 ... MAX98373_R20FF_GLOBAL_SHDN: 512 case MAX98373_R21FF_REV_ID: 513 return true; 514 default: 515 return false; 516 } 517 }; 518 519 static bool max98373_volatile_reg(struct device *dev, unsigned int reg) 520 { 521 switch (reg) { 522 case MAX98373_R2000_SW_RESET ... MAX98373_R2009_INT_FLAG3: 523 case MAX98373_R2054_MEAS_ADC_PVDD_CH_READBACK: 524 case MAX98373_R2055_MEAS_ADC_THERM_CH_READBACK: 525 case MAX98373_R20B6_BDE_CUR_STATE_READBACK: 526 case MAX98373_R21FF_REV_ID: 527 return true; 528 default: 529 return false; 530 } 531 } 532 533 static const char * const max98373_output_voltage_lvl_text[] = { 534 "5.43V", "6.09V", "6.83V", "7.67V", "8.60V", 535 "9.65V", "10.83V", "12.15V", "13.63V", "15.29V" 536 }; 537 538 static SOC_ENUM_SINGLE_DECL(max98373_out_volt_enum, 539 MAX98373_R203E_AMP_PATH_GAIN, 0, 540 max98373_output_voltage_lvl_text); 541 542 static const char * const max98373_dht_attack_rate_text[] = { 543 "17.5us", "35us", "70us", "140us", 544 "280us", "560us", "1120us", "2240us" 545 }; 546 547 static SOC_ENUM_SINGLE_DECL(max98373_dht_attack_rate_enum, 548 MAX98373_R20D2_DHT_ATTACK_CFG, 0, 549 max98373_dht_attack_rate_text); 550 551 static const char * const max98373_dht_release_rate_text[] = { 552 "45ms", "225ms", "450ms", "1150ms", 553 "2250ms", "3100ms", "4500ms", "6750ms" 554 }; 555 556 static SOC_ENUM_SINGLE_DECL(max98373_dht_release_rate_enum, 557 MAX98373_R20D3_DHT_RELEASE_CFG, 0, 558 max98373_dht_release_rate_text); 559 560 static const char * const max98373_limiter_attack_rate_text[] = { 561 "10us", "20us", "40us", "80us", 562 "160us", "320us", "640us", "1.28ms", 563 "2.56ms", "5.12ms", "10.24ms", "20.48ms", 564 "40.96ms", "81.92ms", "16.384ms", "32.768ms" 565 }; 566 567 static SOC_ENUM_SINGLE_DECL(max98373_limiter_attack_rate_enum, 568 MAX98373_R20E1_LIMITER_ATK_REL_RATES, 4, 569 max98373_limiter_attack_rate_text); 570 571 static const char * const max98373_limiter_release_rate_text[] = { 572 "40us", "80us", "160us", "320us", 573 "640us", "1.28ms", "2.56ms", "5.120ms", 574 "10.24ms", "20.48ms", "40.96ms", "81.92ms", 575 "163.84ms", "327.68ms", "655.36ms", "1310.72ms" 576 }; 577 578 static SOC_ENUM_SINGLE_DECL(max98373_limiter_release_rate_enum, 579 MAX98373_R20E1_LIMITER_ATK_REL_RATES, 0, 580 max98373_limiter_release_rate_text); 581 582 static const char * const max98373_ADC_samplerate_text[] = { 583 "333kHz", "192kHz", "64kHz", "48kHz" 584 }; 585 586 static SOC_ENUM_SINGLE_DECL(max98373_adc_samplerate_enum, 587 MAX98373_R2051_MEAS_ADC_SAMPLING_RATE, 0, 588 max98373_ADC_samplerate_text); 589 590 static const struct snd_kcontrol_new max98373_snd_controls[] = { 591 SOC_SINGLE("Digital Vol Sel Switch", MAX98373_R203F_AMP_DSP_CFG, 592 MAX98373_AMP_VOL_SEL_SHIFT, 1, 0), 593 SOC_SINGLE("Volume Location Switch", MAX98373_R203F_AMP_DSP_CFG, 594 MAX98373_AMP_VOL_SEL_SHIFT, 1, 0), 595 SOC_SINGLE("Ramp Up Switch", MAX98373_R203F_AMP_DSP_CFG, 596 MAX98373_AMP_DSP_CFG_RMP_UP_SHIFT, 1, 0), 597 SOC_SINGLE("Ramp Down Switch", MAX98373_R203F_AMP_DSP_CFG, 598 MAX98373_AMP_DSP_CFG_RMP_DN_SHIFT, 1, 0), 599 SOC_SINGLE("CLK Monitor Switch", MAX98373_R20FE_DEVICE_AUTO_RESTART_CFG, 600 MAX98373_CLOCK_MON_SHIFT, 1, 0), 601 SOC_SINGLE("Dither Switch", MAX98373_R203F_AMP_DSP_CFG, 602 MAX98373_AMP_DSP_CFG_DITH_SHIFT, 1, 0), 603 SOC_SINGLE("DC Blocker Switch", MAX98373_R203F_AMP_DSP_CFG, 604 MAX98373_AMP_DSP_CFG_DCBLK_SHIFT, 1, 0), 605 SOC_SINGLE_TLV("Digital Volume", MAX98373_R203D_AMP_DIG_VOL_CTRL, 606 0, 0x7F, 0, max98373_digital_tlv), 607 SOC_SINGLE_TLV("Speaker Volume", MAX98373_R203E_AMP_PATH_GAIN, 608 MAX98373_SPK_DIGI_GAIN_SHIFT, 10, 0, max98373_spk_tlv), 609 SOC_SINGLE_TLV("FS Max Volume", MAX98373_R203E_AMP_PATH_GAIN, 610 MAX98373_FS_GAIN_MAX_SHIFT, 9, 0, max98373_spkgain_max_tlv), 611 SOC_ENUM("Output Voltage", max98373_out_volt_enum), 612 /* Dynamic Headroom Tracking */ 613 SOC_SINGLE("DHT Switch", MAX98373_R20D4_DHT_EN, 614 MAX98373_DHT_EN_SHIFT, 1, 0), 615 SOC_SINGLE_TLV("DHT Min Volume", MAX98373_R20D1_DHT_CFG, 616 MAX98373_DHT_SPK_GAIN_MIN_SHIFT, 9, 0, max98373_dht_spkgain_min_tlv), 617 SOC_SINGLE_TLV("DHT Rot Pnt Volume", MAX98373_R20D1_DHT_CFG, 618 MAX98373_DHT_ROT_PNT_SHIFT, 15, 0, max98373_dht_rotation_point_tlv), 619 SOC_SINGLE_TLV("DHT Attack Step Volume", MAX98373_R20D2_DHT_ATTACK_CFG, 620 MAX98373_DHT_ATTACK_STEP_SHIFT, 4, 0, max98373_dht_step_size_tlv), 621 SOC_SINGLE_TLV("DHT Release Step Volume", MAX98373_R20D3_DHT_RELEASE_CFG, 622 MAX98373_DHT_RELEASE_STEP_SHIFT, 4, 0, max98373_dht_step_size_tlv), 623 SOC_ENUM("DHT Attack Rate", max98373_dht_attack_rate_enum), 624 SOC_ENUM("DHT Release Rate", max98373_dht_release_rate_enum), 625 /* ADC configuration */ 626 SOC_SINGLE("ADC PVDD CH Switch", MAX98373_R2056_MEAS_ADC_PVDD_CH_EN, 0, 1, 0), 627 SOC_SINGLE("ADC PVDD FLT Switch", MAX98373_R2052_MEAS_ADC_PVDD_FLT_CFG, 628 MAX98373_FLT_EN_SHIFT, 1, 0), 629 SOC_SINGLE("ADC TEMP FLT Switch", MAX98373_R2053_MEAS_ADC_THERM_FLT_CFG, 630 MAX98373_FLT_EN_SHIFT, 1, 0), 631 SOC_SINGLE("ADC PVDD", MAX98373_R2054_MEAS_ADC_PVDD_CH_READBACK, 0, 0xFF, 0), 632 SOC_SINGLE("ADC TEMP", MAX98373_R2055_MEAS_ADC_THERM_CH_READBACK, 0, 0xFF, 0), 633 SOC_SINGLE("ADC PVDD FLT Coeff", MAX98373_R2052_MEAS_ADC_PVDD_FLT_CFG, 634 0, 0x3, 0), 635 SOC_SINGLE("ADC TEMP FLT Coeff", MAX98373_R2053_MEAS_ADC_THERM_FLT_CFG, 636 0, 0x3, 0), 637 SOC_ENUM("ADC SampleRate", max98373_adc_samplerate_enum), 638 /* Brownout Detection Engine */ 639 SOC_SINGLE("BDE Switch", MAX98373_R20B5_BDE_EN, MAX98373_BDE_EN_SHIFT, 1, 0), 640 SOC_SINGLE("BDE LVL4 Mute Switch", MAX98373_R20B2_BDE_L4_CFG_2, 641 MAX98373_LVL4_MUTE_EN_SHIFT, 1, 0), 642 SOC_SINGLE("BDE LVL4 Hold Switch", MAX98373_R20B2_BDE_L4_CFG_2, 643 MAX98373_LVL4_HOLD_EN_SHIFT, 1, 0), 644 SOC_SINGLE("BDE LVL1 Thresh", MAX98373_R2097_BDE_L1_THRESH, 0, 0xFF, 0), 645 SOC_SINGLE("BDE LVL2 Thresh", MAX98373_R2098_BDE_L2_THRESH, 0, 0xFF, 0), 646 SOC_SINGLE("BDE LVL3 Thresh", MAX98373_R2099_BDE_L3_THRESH, 0, 0xFF, 0), 647 SOC_SINGLE("BDE LVL4 Thresh", MAX98373_R209A_BDE_L4_THRESH, 0, 0xFF, 0), 648 SOC_SINGLE("BDE Active Level", MAX98373_R20B6_BDE_CUR_STATE_READBACK, 0, 8, 0), 649 SOC_SINGLE("BDE Clip Mode Switch", MAX98373_R2092_BDE_CLIPPER_MODE, 0, 1, 0), 650 SOC_SINGLE("BDE Thresh Hysteresis", MAX98373_R209B_BDE_THRESH_HYST, 0, 0xFF, 0), 651 SOC_SINGLE("BDE Hold Time", MAX98373_R2090_BDE_LVL_HOLD, 0, 0xFF, 0), 652 SOC_SINGLE("BDE Attack Rate", MAX98373_R2091_BDE_GAIN_ATK_REL_RATE, 4, 0xF, 0), 653 SOC_SINGLE("BDE Release Rate", MAX98373_R2091_BDE_GAIN_ATK_REL_RATE, 0, 0xF, 0), 654 SOC_SINGLE_TLV("BDE LVL1 Clip Thresh Volume", MAX98373_R20A9_BDE_L1_CFG_2, 655 0, 0x3C, 0, max98373_bde_gain_tlv), 656 SOC_SINGLE_TLV("BDE LVL2 Clip Thresh Volume", MAX98373_R20AC_BDE_L2_CFG_2, 657 0, 0x3C, 0, max98373_bde_gain_tlv), 658 SOC_SINGLE_TLV("BDE LVL3 Clip Thresh Volume", MAX98373_R20AF_BDE_L3_CFG_2, 659 0, 0x3C, 0, max98373_bde_gain_tlv), 660 SOC_SINGLE_TLV("BDE LVL4 Clip Thresh Volume", MAX98373_R20B2_BDE_L4_CFG_2, 661 0, 0x3C, 0, max98373_bde_gain_tlv), 662 SOC_SINGLE_TLV("BDE LVL1 Clip Reduction Volume", MAX98373_R20AA_BDE_L1_CFG_3, 663 0, 0x3C, 0, max98373_bde_gain_tlv), 664 SOC_SINGLE_TLV("BDE LVL2 Clip Reduction Volume", MAX98373_R20AD_BDE_L2_CFG_3, 665 0, 0x3C, 0, max98373_bde_gain_tlv), 666 SOC_SINGLE_TLV("BDE LVL3 Clip Reduction Volume", MAX98373_R20B0_BDE_L3_CFG_3, 667 0, 0x3C, 0, max98373_bde_gain_tlv), 668 SOC_SINGLE_TLV("BDE LVL4 Clip Reduction Volume", MAX98373_R20B3_BDE_L4_CFG_3, 669 0, 0x3C, 0, max98373_bde_gain_tlv), 670 SOC_SINGLE_TLV("BDE LVL1 Limiter Thresh Volume", MAX98373_R20A8_BDE_L1_CFG_1, 671 0, 0xF, 0, max98373_limiter_thresh_tlv), 672 SOC_SINGLE_TLV("BDE LVL2 Limiter Thresh Volume", MAX98373_R20AB_BDE_L2_CFG_1, 673 0, 0xF, 0, max98373_limiter_thresh_tlv), 674 SOC_SINGLE_TLV("BDE LVL3 Limiter Thresh Volume", MAX98373_R20AE_BDE_L3_CFG_1, 675 0, 0xF, 0, max98373_limiter_thresh_tlv), 676 SOC_SINGLE_TLV("BDE LVL4 Limiter Thresh Volume", MAX98373_R20B1_BDE_L4_CFG_1, 677 0, 0xF, 0, max98373_limiter_thresh_tlv), 678 /* Limiter */ 679 SOC_SINGLE("Limiter Switch", MAX98373_R20E2_LIMITER_EN, 680 MAX98373_LIMITER_EN_SHIFT, 1, 0), 681 SOC_SINGLE("Limiter Src Switch", MAX98373_R20E0_LIMITER_THRESH_CFG, 682 MAX98373_LIMITER_THRESH_SRC_SHIFT, 1, 0), 683 SOC_SINGLE_TLV("Limiter Thresh Volume", MAX98373_R20E0_LIMITER_THRESH_CFG, 684 MAX98373_LIMITER_THRESH_SHIFT, 15, 0, max98373_limiter_thresh_tlv), 685 SOC_ENUM("Limiter Attack Rate", max98373_limiter_attack_rate_enum), 686 SOC_ENUM("Limiter Release Rate", max98373_limiter_release_rate_enum), 687 }; 688 689 static const struct snd_soc_dapm_route max98373_audio_map[] = { 690 /* Plabyack */ 691 {"DAI Sel Mux", "Left", "Amp Enable"}, 692 {"DAI Sel Mux", "Right", "Amp Enable"}, 693 {"DAI Sel Mux", "LeftRight", "Amp Enable"}, 694 {"BE_OUT", NULL, "DAI Sel Mux"}, 695 /* Capture */ 696 { "VI Sense", "Switch", "VMON" }, 697 { "VI Sense", "Switch", "IMON" }, 698 { "SpkFB Sense", "Switch", "FBMON" }, 699 { "Voltage Sense", NULL, "VI Sense" }, 700 { "Current Sense", NULL, "VI Sense" }, 701 { "Speaker FB Sense", NULL, "SpkFB Sense" }, 702 }; 703 704 static struct snd_soc_dai_driver max98373_dai[] = { 705 { 706 .name = "max98373-aif1", 707 .playback = { 708 .stream_name = "HiFi Playback", 709 .channels_min = 1, 710 .channels_max = 2, 711 .rates = MAX98373_RATES, 712 .formats = MAX98373_FORMATS, 713 }, 714 .capture = { 715 .stream_name = "HiFi Capture", 716 .channels_min = 1, 717 .channels_max = 2, 718 .rates = MAX98373_RATES, 719 .formats = MAX98373_FORMATS, 720 }, 721 .ops = &max98373_dai_ops, 722 } 723 }; 724 725 static int max98373_probe(struct snd_soc_component *component) 726 { 727 struct max98373_priv *max98373 = snd_soc_component_get_drvdata(component); 728 729 /* Software Reset */ 730 regmap_write(max98373->regmap, 731 MAX98373_R2000_SW_RESET, MAX98373_SOFT_RESET); 732 733 /* IV default slot configuration */ 734 regmap_write(max98373->regmap, 735 MAX98373_R2020_PCM_TX_HIZ_EN_1, 736 0xFF); 737 regmap_write(max98373->regmap, 738 MAX98373_R2021_PCM_TX_HIZ_EN_2, 739 0xFF); 740 /* L/R mix configuration */ 741 regmap_write(max98373->regmap, 742 MAX98373_R2029_PCM_TO_SPK_MONO_MIX_1, 743 0x80); 744 regmap_write(max98373->regmap, 745 MAX98373_R202A_PCM_TO_SPK_MONO_MIX_2, 746 0x1); 747 /* Set inital volume (0dB) */ 748 regmap_write(max98373->regmap, 749 MAX98373_R203D_AMP_DIG_VOL_CTRL, 750 0x00); 751 regmap_write(max98373->regmap, 752 MAX98373_R203E_AMP_PATH_GAIN, 753 0x00); 754 /* Enable DC blocker */ 755 regmap_write(max98373->regmap, 756 MAX98373_R203F_AMP_DSP_CFG, 757 0x3); 758 /* Enable IMON VMON DC blocker */ 759 regmap_write(max98373->regmap, 760 MAX98373_R2046_IV_SENSE_ADC_DSP_CFG, 761 0x7); 762 /* voltage, current slot configuration */ 763 regmap_write(max98373->regmap, 764 MAX98373_R2022_PCM_TX_SRC_1, 765 (max98373->i_slot << MAX98373_PCM_TX_CH_SRC_A_I_SHIFT | 766 max98373->v_slot) & 0xFF); 767 if (max98373->v_slot < 8) 768 regmap_update_bits(max98373->regmap, 769 MAX98373_R2020_PCM_TX_HIZ_EN_1, 770 1 << max98373->v_slot, 0); 771 else 772 regmap_update_bits(max98373->regmap, 773 MAX98373_R2021_PCM_TX_HIZ_EN_2, 774 1 << (max98373->v_slot - 8), 0); 775 776 if (max98373->i_slot < 8) 777 regmap_update_bits(max98373->regmap, 778 MAX98373_R2020_PCM_TX_HIZ_EN_1, 779 1 << max98373->i_slot, 0); 780 else 781 regmap_update_bits(max98373->regmap, 782 MAX98373_R2021_PCM_TX_HIZ_EN_2, 783 1 << (max98373->i_slot - 8), 0); 784 785 /* speaker feedback slot configuration */ 786 regmap_write(max98373->regmap, 787 MAX98373_R2023_PCM_TX_SRC_2, 788 max98373->spkfb_slot & 0xFF); 789 790 /* Set interleave mode */ 791 if (max98373->interleave_mode) 792 regmap_update_bits(max98373->regmap, 793 MAX98373_R2024_PCM_DATA_FMT_CFG, 794 MAX98373_PCM_TX_CH_INTERLEAVE_MASK, 795 MAX98373_PCM_TX_CH_INTERLEAVE_MASK); 796 797 /* Speaker enable */ 798 regmap_update_bits(max98373->regmap, 799 MAX98373_R2043_AMP_EN, 800 MAX98373_SPK_EN_MASK, 1); 801 802 return 0; 803 } 804 805 #ifdef CONFIG_PM_SLEEP 806 static int max98373_suspend(struct device *dev) 807 { 808 struct max98373_priv *max98373 = dev_get_drvdata(dev); 809 810 regcache_cache_only(max98373->regmap, true); 811 regcache_mark_dirty(max98373->regmap); 812 return 0; 813 } 814 static int max98373_resume(struct device *dev) 815 { 816 struct max98373_priv *max98373 = dev_get_drvdata(dev); 817 818 regmap_write(max98373->regmap, 819 MAX98373_R2000_SW_RESET, MAX98373_SOFT_RESET); 820 regcache_cache_only(max98373->regmap, false); 821 regcache_sync(max98373->regmap); 822 return 0; 823 } 824 #endif 825 826 static const struct dev_pm_ops max98373_pm = { 827 SET_SYSTEM_SLEEP_PM_OPS(max98373_suspend, max98373_resume) 828 }; 829 830 static const struct snd_soc_component_driver soc_codec_dev_max98373 = { 831 .probe = max98373_probe, 832 .controls = max98373_snd_controls, 833 .num_controls = ARRAY_SIZE(max98373_snd_controls), 834 .dapm_widgets = max98373_dapm_widgets, 835 .num_dapm_widgets = ARRAY_SIZE(max98373_dapm_widgets), 836 .dapm_routes = max98373_audio_map, 837 .num_dapm_routes = ARRAY_SIZE(max98373_audio_map), 838 .idle_bias_on = 1, 839 .use_pmdown_time = 1, 840 .endianness = 1, 841 .non_legacy_dai_naming = 1, 842 }; 843 844 static const struct regmap_config max98373_regmap = { 845 .reg_bits = 16, 846 .val_bits = 8, 847 .max_register = MAX98373_R21FF_REV_ID, 848 .reg_defaults = max98373_reg, 849 .num_reg_defaults = ARRAY_SIZE(max98373_reg), 850 .readable_reg = max98373_readable_register, 851 .volatile_reg = max98373_volatile_reg, 852 .cache_type = REGCACHE_RBTREE, 853 }; 854 855 static void max98373_slot_config(struct i2c_client *i2c, 856 struct max98373_priv *max98373) 857 { 858 int value; 859 struct device *dev = &i2c->dev; 860 861 if (!device_property_read_u32(dev, "maxim,vmon-slot-no", &value)) 862 max98373->v_slot = value & 0xF; 863 else 864 max98373->v_slot = 0; 865 866 if (!device_property_read_u32(dev, "maxim,imon-slot-no", &value)) 867 max98373->i_slot = value & 0xF; 868 else 869 max98373->i_slot = 1; 870 871 if (!device_property_read_u32(dev, "maxim,spkfb-slot-no", &value)) 872 max98373->spkfb_slot = value & 0xF; 873 else 874 max98373->spkfb_slot = 2; 875 } 876 877 static int max98373_i2c_probe(struct i2c_client *i2c, 878 const struct i2c_device_id *id) 879 { 880 881 int ret = 0; 882 int reg = 0; 883 struct max98373_priv *max98373 = NULL; 884 885 max98373 = devm_kzalloc(&i2c->dev, sizeof(*max98373), GFP_KERNEL); 886 887 if (!max98373) { 888 ret = -ENOMEM; 889 return ret; 890 } 891 i2c_set_clientdata(i2c, max98373); 892 893 /* update interleave mode info */ 894 if (device_property_read_bool(&i2c->dev, "maxim,interleave_mode")) 895 max98373->interleave_mode = 1; 896 else 897 max98373->interleave_mode = 0; 898 899 900 /* regmap initialization */ 901 max98373->regmap 902 = devm_regmap_init_i2c(i2c, &max98373_regmap); 903 if (IS_ERR(max98373->regmap)) { 904 ret = PTR_ERR(max98373->regmap); 905 dev_err(&i2c->dev, 906 "Failed to allocate regmap: %d\n", ret); 907 return ret; 908 } 909 910 /* Check Revision ID */ 911 ret = regmap_read(max98373->regmap, 912 MAX98373_R21FF_REV_ID, ®); 913 if (ret < 0) { 914 dev_err(&i2c->dev, 915 "Failed to read: 0x%02X\n", MAX98373_R21FF_REV_ID); 916 return ret; 917 } 918 dev_info(&i2c->dev, "MAX98373 revisionID: 0x%02X\n", reg); 919 920 /* voltage/current slot configuration */ 921 max98373_slot_config(i2c, max98373); 922 923 /* codec registeration */ 924 ret = devm_snd_soc_register_component(&i2c->dev, &soc_codec_dev_max98373, 925 max98373_dai, ARRAY_SIZE(max98373_dai)); 926 if (ret < 0) 927 dev_err(&i2c->dev, "Failed to register codec: %d\n", ret); 928 929 return ret; 930 } 931 932 static const struct i2c_device_id max98373_i2c_id[] = { 933 { "max98373", 0}, 934 { }, 935 }; 936 937 MODULE_DEVICE_TABLE(i2c, max98373_i2c_id); 938 939 #if defined(CONFIG_OF) 940 static const struct of_device_id max98373_of_match[] = { 941 { .compatible = "maxim,max98373", }, 942 { } 943 }; 944 MODULE_DEVICE_TABLE(of, max98373_of_match); 945 #endif 946 947 #ifdef CONFIG_ACPI 948 static const struct acpi_device_id max98373_acpi_match[] = { 949 { "MX98373", 0 }, 950 {}, 951 }; 952 MODULE_DEVICE_TABLE(acpi, max98373_acpi_match); 953 #endif 954 955 static struct i2c_driver max98373_i2c_driver = { 956 .driver = { 957 .name = "max98373", 958 .of_match_table = of_match_ptr(max98373_of_match), 959 .acpi_match_table = ACPI_PTR(max98373_acpi_match), 960 .pm = &max98373_pm, 961 }, 962 .probe = max98373_i2c_probe, 963 .id_table = max98373_i2c_id, 964 }; 965 966 module_i2c_driver(max98373_i2c_driver) 967 968 MODULE_DESCRIPTION("ALSA SoC MAX98373 driver"); 969 MODULE_AUTHOR("Ryan Lee <ryans.lee@maximintegrated.com>"); 970 MODULE_LICENSE("GPL"); 971