1 // SPDX-License-Identifier: GPL-2.0 2 // Copyright (c) 2017, Maxim Integrated 3 4 #include <linux/acpi.h> 5 #include <linux/delay.h> 6 #include <linux/i2c.h> 7 #include <linux/module.h> 8 #include <linux/regmap.h> 9 #include <linux/slab.h> 10 #include <linux/cdev.h> 11 #include <sound/pcm.h> 12 #include <sound/pcm_params.h> 13 #include <sound/soc.h> 14 #include <linux/gpio.h> 15 #include <linux/of.h> 16 #include <linux/of_gpio.h> 17 #include <sound/tlv.h> 18 #include "max98373.h" 19 20 static struct reg_default max98373_reg[] = { 21 {MAX98373_R2000_SW_RESET, 0x00}, 22 {MAX98373_R2001_INT_RAW1, 0x00}, 23 {MAX98373_R2002_INT_RAW2, 0x00}, 24 {MAX98373_R2003_INT_RAW3, 0x00}, 25 {MAX98373_R2004_INT_STATE1, 0x00}, 26 {MAX98373_R2005_INT_STATE2, 0x00}, 27 {MAX98373_R2006_INT_STATE3, 0x00}, 28 {MAX98373_R2007_INT_FLAG1, 0x00}, 29 {MAX98373_R2008_INT_FLAG2, 0x00}, 30 {MAX98373_R2009_INT_FLAG3, 0x00}, 31 {MAX98373_R200A_INT_EN1, 0x00}, 32 {MAX98373_R200B_INT_EN2, 0x00}, 33 {MAX98373_R200C_INT_EN3, 0x00}, 34 {MAX98373_R200D_INT_FLAG_CLR1, 0x00}, 35 {MAX98373_R200E_INT_FLAG_CLR2, 0x00}, 36 {MAX98373_R200F_INT_FLAG_CLR3, 0x00}, 37 {MAX98373_R2010_IRQ_CTRL, 0x00}, 38 {MAX98373_R2014_THERM_WARN_THRESH, 0x10}, 39 {MAX98373_R2015_THERM_SHDN_THRESH, 0x27}, 40 {MAX98373_R2016_THERM_HYSTERESIS, 0x01}, 41 {MAX98373_R2017_THERM_FOLDBACK_SET, 0xC0}, 42 {MAX98373_R2018_THERM_FOLDBACK_EN, 0x00}, 43 {MAX98373_R201E_PIN_DRIVE_STRENGTH, 0x55}, 44 {MAX98373_R2020_PCM_TX_HIZ_EN_1, 0xFE}, 45 {MAX98373_R2021_PCM_TX_HIZ_EN_2, 0xFF}, 46 {MAX98373_R2022_PCM_TX_SRC_1, 0x00}, 47 {MAX98373_R2023_PCM_TX_SRC_2, 0x00}, 48 {MAX98373_R2024_PCM_DATA_FMT_CFG, 0xC0}, 49 {MAX98373_R2025_AUDIO_IF_MODE, 0x00}, 50 {MAX98373_R2026_PCM_CLOCK_RATIO, 0x04}, 51 {MAX98373_R2027_PCM_SR_SETUP_1, 0x08}, 52 {MAX98373_R2028_PCM_SR_SETUP_2, 0x88}, 53 {MAX98373_R2029_PCM_TO_SPK_MONO_MIX_1, 0x00}, 54 {MAX98373_R202A_PCM_TO_SPK_MONO_MIX_2, 0x00}, 55 {MAX98373_R202B_PCM_RX_EN, 0x00}, 56 {MAX98373_R202C_PCM_TX_EN, 0x00}, 57 {MAX98373_R202E_ICC_RX_CH_EN_1, 0x00}, 58 {MAX98373_R202F_ICC_RX_CH_EN_2, 0x00}, 59 {MAX98373_R2030_ICC_TX_HIZ_EN_1, 0xFF}, 60 {MAX98373_R2031_ICC_TX_HIZ_EN_2, 0xFF}, 61 {MAX98373_R2032_ICC_LINK_EN_CFG, 0x30}, 62 {MAX98373_R2034_ICC_TX_CNTL, 0x00}, 63 {MAX98373_R2035_ICC_TX_EN, 0x00}, 64 {MAX98373_R2036_SOUNDWIRE_CTRL, 0x05}, 65 {MAX98373_R203D_AMP_DIG_VOL_CTRL, 0x00}, 66 {MAX98373_R203E_AMP_PATH_GAIN, 0x08}, 67 {MAX98373_R203F_AMP_DSP_CFG, 0x02}, 68 {MAX98373_R2040_TONE_GEN_CFG, 0x00}, 69 {MAX98373_R2041_AMP_CFG, 0x03}, 70 {MAX98373_R2042_AMP_EDGE_RATE_CFG, 0x00}, 71 {MAX98373_R2043_AMP_EN, 0x00}, 72 {MAX98373_R2046_IV_SENSE_ADC_DSP_CFG, 0x04}, 73 {MAX98373_R2047_IV_SENSE_ADC_EN, 0x00}, 74 {MAX98373_R2051_MEAS_ADC_SAMPLING_RATE, 0x00}, 75 {MAX98373_R2052_MEAS_ADC_PVDD_FLT_CFG, 0x00}, 76 {MAX98373_R2053_MEAS_ADC_THERM_FLT_CFG, 0x00}, 77 {MAX98373_R2054_MEAS_ADC_PVDD_CH_READBACK, 0x00}, 78 {MAX98373_R2055_MEAS_ADC_THERM_CH_READBACK, 0x00}, 79 {MAX98373_R2056_MEAS_ADC_PVDD_CH_EN, 0x00}, 80 {MAX98373_R2090_BDE_LVL_HOLD, 0x00}, 81 {MAX98373_R2091_BDE_GAIN_ATK_REL_RATE, 0x00}, 82 {MAX98373_R2092_BDE_CLIPPER_MODE, 0x00}, 83 {MAX98373_R2097_BDE_L1_THRESH, 0x00}, 84 {MAX98373_R2098_BDE_L2_THRESH, 0x00}, 85 {MAX98373_R2099_BDE_L3_THRESH, 0x00}, 86 {MAX98373_R209A_BDE_L4_THRESH, 0x00}, 87 {MAX98373_R209B_BDE_THRESH_HYST, 0x00}, 88 {MAX98373_R20A8_BDE_L1_CFG_1, 0x00}, 89 {MAX98373_R20A9_BDE_L1_CFG_2, 0x00}, 90 {MAX98373_R20AA_BDE_L1_CFG_3, 0x00}, 91 {MAX98373_R20AB_BDE_L2_CFG_1, 0x00}, 92 {MAX98373_R20AC_BDE_L2_CFG_2, 0x00}, 93 {MAX98373_R20AD_BDE_L2_CFG_3, 0x00}, 94 {MAX98373_R20AE_BDE_L3_CFG_1, 0x00}, 95 {MAX98373_R20AF_BDE_L3_CFG_2, 0x00}, 96 {MAX98373_R20B0_BDE_L3_CFG_3, 0x00}, 97 {MAX98373_R20B1_BDE_L4_CFG_1, 0x00}, 98 {MAX98373_R20B2_BDE_L4_CFG_2, 0x00}, 99 {MAX98373_R20B3_BDE_L4_CFG_3, 0x00}, 100 {MAX98373_R20B4_BDE_INFINITE_HOLD_RELEASE, 0x00}, 101 {MAX98373_R20B5_BDE_EN, 0x00}, 102 {MAX98373_R20B6_BDE_CUR_STATE_READBACK, 0x00}, 103 {MAX98373_R20D1_DHT_CFG, 0x01}, 104 {MAX98373_R20D2_DHT_ATTACK_CFG, 0x02}, 105 {MAX98373_R20D3_DHT_RELEASE_CFG, 0x03}, 106 {MAX98373_R20D4_DHT_EN, 0x00}, 107 {MAX98373_R20E0_LIMITER_THRESH_CFG, 0x00}, 108 {MAX98373_R20E1_LIMITER_ATK_REL_RATES, 0x00}, 109 {MAX98373_R20E2_LIMITER_EN, 0x00}, 110 {MAX98373_R20FE_DEVICE_AUTO_RESTART_CFG, 0x00}, 111 {MAX98373_R20FF_GLOBAL_SHDN, 0x00}, 112 {MAX98373_R21FF_REV_ID, 0x42}, 113 }; 114 115 static int max98373_dai_set_fmt(struct snd_soc_dai *codec_dai, unsigned int fmt) 116 { 117 struct snd_soc_component *component = codec_dai->component; 118 struct max98373_priv *max98373 = snd_soc_component_get_drvdata(component); 119 unsigned int format = 0; 120 unsigned int invert = 0; 121 122 dev_dbg(component->dev, "%s: fmt 0x%08X\n", __func__, fmt); 123 124 switch (fmt & SND_SOC_DAIFMT_INV_MASK) { 125 case SND_SOC_DAIFMT_NB_NF: 126 break; 127 case SND_SOC_DAIFMT_IB_NF: 128 invert = MAX98373_PCM_MODE_CFG_PCM_BCLKEDGE; 129 break; 130 default: 131 dev_err(component->dev, "DAI invert mode unsupported\n"); 132 return -EINVAL; 133 } 134 135 regmap_update_bits(max98373->regmap, 136 MAX98373_R2026_PCM_CLOCK_RATIO, 137 MAX98373_PCM_MODE_CFG_PCM_BCLKEDGE, 138 invert); 139 140 /* interface format */ 141 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { 142 case SND_SOC_DAIFMT_I2S: 143 format = MAX98373_PCM_FORMAT_I2S; 144 break; 145 case SND_SOC_DAIFMT_LEFT_J: 146 format = MAX98373_PCM_FORMAT_LJ; 147 break; 148 case SND_SOC_DAIFMT_DSP_A: 149 format = MAX98373_PCM_FORMAT_TDM_MODE1; 150 break; 151 case SND_SOC_DAIFMT_DSP_B: 152 format = MAX98373_PCM_FORMAT_TDM_MODE0; 153 break; 154 default: 155 return -EINVAL; 156 } 157 158 regmap_update_bits(max98373->regmap, 159 MAX98373_R2024_PCM_DATA_FMT_CFG, 160 MAX98373_PCM_MODE_CFG_FORMAT_MASK, 161 format << MAX98373_PCM_MODE_CFG_FORMAT_SHIFT); 162 163 return 0; 164 } 165 166 /* BCLKs per LRCLK */ 167 static const int bclk_sel_table[] = { 168 32, 48, 64, 96, 128, 192, 256, 384, 512, 320, 169 }; 170 171 static int max98373_get_bclk_sel(int bclk) 172 { 173 int i; 174 /* match BCLKs per LRCLK */ 175 for (i = 0; i < ARRAY_SIZE(bclk_sel_table); i++) { 176 if (bclk_sel_table[i] == bclk) 177 return i + 2; 178 } 179 return 0; 180 } 181 182 static int max98373_set_clock(struct snd_soc_component *component, 183 struct snd_pcm_hw_params *params) 184 { 185 struct max98373_priv *max98373 = snd_soc_component_get_drvdata(component); 186 /* BCLK/LRCLK ratio calculation */ 187 int blr_clk_ratio = params_channels(params) * max98373->ch_size; 188 int value; 189 190 if (!max98373->tdm_mode) { 191 /* BCLK configuration */ 192 value = max98373_get_bclk_sel(blr_clk_ratio); 193 if (!value) { 194 dev_err(component->dev, "format unsupported %d\n", 195 params_format(params)); 196 return -EINVAL; 197 } 198 199 regmap_update_bits(max98373->regmap, 200 MAX98373_R2026_PCM_CLOCK_RATIO, 201 MAX98373_PCM_CLK_SETUP_BSEL_MASK, 202 value); 203 } 204 return 0; 205 } 206 207 static int max98373_dai_hw_params(struct snd_pcm_substream *substream, 208 struct snd_pcm_hw_params *params, 209 struct snd_soc_dai *dai) 210 { 211 struct snd_soc_component *component = dai->component; 212 struct max98373_priv *max98373 = snd_soc_component_get_drvdata(component); 213 unsigned int sampling_rate = 0; 214 unsigned int chan_sz = 0; 215 216 /* pcm mode configuration */ 217 switch (snd_pcm_format_width(params_format(params))) { 218 case 16: 219 chan_sz = MAX98373_PCM_MODE_CFG_CHANSZ_16; 220 break; 221 case 24: 222 chan_sz = MAX98373_PCM_MODE_CFG_CHANSZ_24; 223 break; 224 case 32: 225 chan_sz = MAX98373_PCM_MODE_CFG_CHANSZ_32; 226 break; 227 default: 228 dev_err(component->dev, "format unsupported %d\n", 229 params_format(params)); 230 goto err; 231 } 232 233 max98373->ch_size = snd_pcm_format_width(params_format(params)); 234 235 regmap_update_bits(max98373->regmap, 236 MAX98373_R2024_PCM_DATA_FMT_CFG, 237 MAX98373_PCM_MODE_CFG_CHANSZ_MASK, chan_sz); 238 239 dev_dbg(component->dev, "format supported %d", 240 params_format(params)); 241 242 /* sampling rate configuration */ 243 switch (params_rate(params)) { 244 case 8000: 245 sampling_rate = MAX98373_PCM_SR_SET1_SR_8000; 246 break; 247 case 11025: 248 sampling_rate = MAX98373_PCM_SR_SET1_SR_11025; 249 break; 250 case 12000: 251 sampling_rate = MAX98373_PCM_SR_SET1_SR_12000; 252 break; 253 case 16000: 254 sampling_rate = MAX98373_PCM_SR_SET1_SR_16000; 255 break; 256 case 22050: 257 sampling_rate = MAX98373_PCM_SR_SET1_SR_22050; 258 break; 259 case 24000: 260 sampling_rate = MAX98373_PCM_SR_SET1_SR_24000; 261 break; 262 case 32000: 263 sampling_rate = MAX98373_PCM_SR_SET1_SR_32000; 264 break; 265 case 44100: 266 sampling_rate = MAX98373_PCM_SR_SET1_SR_44100; 267 break; 268 case 48000: 269 sampling_rate = MAX98373_PCM_SR_SET1_SR_48000; 270 break; 271 case 88200: 272 sampling_rate = MAX98373_PCM_SR_SET1_SR_88200; 273 break; 274 case 96000: 275 sampling_rate = MAX98373_PCM_SR_SET1_SR_96000; 276 break; 277 default: 278 dev_err(component->dev, "rate %d not supported\n", 279 params_rate(params)); 280 goto err; 281 } 282 283 /* set DAI_SR to correct LRCLK frequency */ 284 regmap_update_bits(max98373->regmap, 285 MAX98373_R2027_PCM_SR_SETUP_1, 286 MAX98373_PCM_SR_SET1_SR_MASK, 287 sampling_rate); 288 regmap_update_bits(max98373->regmap, 289 MAX98373_R2028_PCM_SR_SETUP_2, 290 MAX98373_PCM_SR_SET2_SR_MASK, 291 sampling_rate << MAX98373_PCM_SR_SET2_SR_SHIFT); 292 293 /* set sampling rate of IV */ 294 if (max98373->interleave_mode && 295 sampling_rate > MAX98373_PCM_SR_SET1_SR_16000) 296 regmap_update_bits(max98373->regmap, 297 MAX98373_R2028_PCM_SR_SETUP_2, 298 MAX98373_PCM_SR_SET2_IVADC_SR_MASK, 299 sampling_rate - 3); 300 else 301 regmap_update_bits(max98373->regmap, 302 MAX98373_R2028_PCM_SR_SETUP_2, 303 MAX98373_PCM_SR_SET2_IVADC_SR_MASK, 304 sampling_rate); 305 306 return max98373_set_clock(component, params); 307 err: 308 return -EINVAL; 309 } 310 311 static int max98373_dai_tdm_slot(struct snd_soc_dai *dai, 312 unsigned int tx_mask, unsigned int rx_mask, 313 int slots, int slot_width) 314 { 315 struct snd_soc_component *component = dai->component; 316 struct max98373_priv *max98373 = snd_soc_component_get_drvdata(component); 317 int bsel = 0; 318 unsigned int chan_sz = 0; 319 unsigned int mask; 320 int x, slot_found; 321 322 if (!tx_mask && !rx_mask && !slots && !slot_width) 323 max98373->tdm_mode = false; 324 else 325 max98373->tdm_mode = true; 326 327 /* BCLK configuration */ 328 bsel = max98373_get_bclk_sel(slots * slot_width); 329 if (bsel == 0) { 330 dev_err(component->dev, "BCLK %d not supported\n", 331 slots * slot_width); 332 return -EINVAL; 333 } 334 335 regmap_update_bits(max98373->regmap, 336 MAX98373_R2026_PCM_CLOCK_RATIO, 337 MAX98373_PCM_CLK_SETUP_BSEL_MASK, 338 bsel); 339 340 /* Channel size configuration */ 341 switch (slot_width) { 342 case 16: 343 chan_sz = MAX98373_PCM_MODE_CFG_CHANSZ_16; 344 break; 345 case 24: 346 chan_sz = MAX98373_PCM_MODE_CFG_CHANSZ_24; 347 break; 348 case 32: 349 chan_sz = MAX98373_PCM_MODE_CFG_CHANSZ_32; 350 break; 351 default: 352 dev_err(component->dev, "format unsupported %d\n", 353 slot_width); 354 return -EINVAL; 355 } 356 357 regmap_update_bits(max98373->regmap, 358 MAX98373_R2024_PCM_DATA_FMT_CFG, 359 MAX98373_PCM_MODE_CFG_CHANSZ_MASK, chan_sz); 360 361 /* Rx slot configuration */ 362 slot_found = 0; 363 mask = rx_mask; 364 for (x = 0 ; x < 16 ; x++, mask >>= 1) { 365 if (mask & 0x1) { 366 if (slot_found == 0) 367 regmap_update_bits(max98373->regmap, 368 MAX98373_R2029_PCM_TO_SPK_MONO_MIX_1, 369 MAX98373_PCM_TO_SPK_CH0_SRC_MASK, x); 370 else 371 regmap_write(max98373->regmap, 372 MAX98373_R202A_PCM_TO_SPK_MONO_MIX_2, 373 x); 374 slot_found++; 375 if (slot_found > 1) 376 break; 377 } 378 } 379 380 /* Tx slot Hi-Z configuration */ 381 regmap_write(max98373->regmap, 382 MAX98373_R2020_PCM_TX_HIZ_EN_1, 383 ~tx_mask & 0xFF); 384 regmap_write(max98373->regmap, 385 MAX98373_R2021_PCM_TX_HIZ_EN_2, 386 (~tx_mask & 0xFF00) >> 8); 387 388 return 0; 389 } 390 391 #define MAX98373_RATES SNDRV_PCM_RATE_8000_96000 392 393 #define MAX98373_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | \ 394 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE) 395 396 static const struct snd_soc_dai_ops max98373_dai_ops = { 397 .set_fmt = max98373_dai_set_fmt, 398 .hw_params = max98373_dai_hw_params, 399 .set_tdm_slot = max98373_dai_tdm_slot, 400 }; 401 402 static int max98373_dac_event(struct snd_soc_dapm_widget *w, 403 struct snd_kcontrol *kcontrol, int event) 404 { 405 struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm); 406 struct max98373_priv *max98373 = snd_soc_component_get_drvdata(component); 407 408 switch (event) { 409 case SND_SOC_DAPM_POST_PMU: 410 regmap_update_bits(max98373->regmap, 411 MAX98373_R20FF_GLOBAL_SHDN, 412 MAX98373_GLOBAL_EN_MASK, 1); 413 break; 414 case SND_SOC_DAPM_POST_PMD: 415 regmap_update_bits(max98373->regmap, 416 MAX98373_R20FF_GLOBAL_SHDN, 417 MAX98373_GLOBAL_EN_MASK, 0); 418 max98373->tdm_mode = false; 419 break; 420 default: 421 return 0; 422 } 423 return 0; 424 } 425 426 static const char * const max98373_switch_text[] = { 427 "Left", "Right", "LeftRight"}; 428 429 static const struct soc_enum dai_sel_enum = 430 SOC_ENUM_SINGLE(MAX98373_R2029_PCM_TO_SPK_MONO_MIX_1, 431 MAX98373_PCM_TO_SPK_MONOMIX_CFG_SHIFT, 432 3, max98373_switch_text); 433 434 static const struct snd_kcontrol_new max98373_dai_controls = 435 SOC_DAPM_ENUM("DAI Sel", dai_sel_enum); 436 437 static const struct snd_kcontrol_new max98373_vi_control = 438 SOC_DAPM_SINGLE("Switch", MAX98373_R202C_PCM_TX_EN, 0, 1, 0); 439 440 static const struct snd_kcontrol_new max98373_spkfb_control = 441 SOC_DAPM_SINGLE("Switch", MAX98373_R2043_AMP_EN, 1, 1, 0); 442 443 static const struct snd_soc_dapm_widget max98373_dapm_widgets[] = { 444 SND_SOC_DAPM_DAC_E("Amp Enable", "HiFi Playback", 445 MAX98373_R202B_PCM_RX_EN, 0, 0, max98373_dac_event, 446 SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_POST_PMD), 447 SND_SOC_DAPM_MUX("DAI Sel Mux", SND_SOC_NOPM, 0, 0, 448 &max98373_dai_controls), 449 SND_SOC_DAPM_OUTPUT("BE_OUT"), 450 SND_SOC_DAPM_AIF_OUT("Voltage Sense", "HiFi Capture", 0, 451 MAX98373_R2047_IV_SENSE_ADC_EN, 0, 0), 452 SND_SOC_DAPM_AIF_OUT("Current Sense", "HiFi Capture", 0, 453 MAX98373_R2047_IV_SENSE_ADC_EN, 1, 0), 454 SND_SOC_DAPM_AIF_OUT("Speaker FB Sense", "HiFi Capture", 0, 455 SND_SOC_NOPM, 0, 0), 456 SND_SOC_DAPM_SWITCH("VI Sense", SND_SOC_NOPM, 0, 0, 457 &max98373_vi_control), 458 SND_SOC_DAPM_SWITCH("SpkFB Sense", SND_SOC_NOPM, 0, 0, 459 &max98373_spkfb_control), 460 SND_SOC_DAPM_SIGGEN("VMON"), 461 SND_SOC_DAPM_SIGGEN("IMON"), 462 SND_SOC_DAPM_SIGGEN("FBMON"), 463 }; 464 465 static DECLARE_TLV_DB_SCALE(max98373_digital_tlv, -6350, 50, 1); 466 static const DECLARE_TLV_DB_RANGE(max98373_spk_tlv, 467 0, 8, TLV_DB_SCALE_ITEM(0, 50, 0), 468 9, 10, TLV_DB_SCALE_ITEM(500, 100, 0), 469 ); 470 static const DECLARE_TLV_DB_RANGE(max98373_spkgain_max_tlv, 471 0, 9, TLV_DB_SCALE_ITEM(800, 100, 0), 472 ); 473 static const DECLARE_TLV_DB_RANGE(max98373_dht_step_size_tlv, 474 0, 1, TLV_DB_SCALE_ITEM(25, 25, 0), 475 2, 4, TLV_DB_SCALE_ITEM(100, 100, 0), 476 ); 477 static const DECLARE_TLV_DB_RANGE(max98373_dht_spkgain_min_tlv, 478 0, 9, TLV_DB_SCALE_ITEM(800, 100, 0), 479 ); 480 static const DECLARE_TLV_DB_RANGE(max98373_dht_rotation_point_tlv, 481 0, 1, TLV_DB_SCALE_ITEM(-3000, 500, 0), 482 2, 4, TLV_DB_SCALE_ITEM(-2200, 200, 0), 483 5, 6, TLV_DB_SCALE_ITEM(-1500, 300, 0), 484 7, 9, TLV_DB_SCALE_ITEM(-1000, 200, 0), 485 10, 13, TLV_DB_SCALE_ITEM(-500, 100, 0), 486 14, 15, TLV_DB_SCALE_ITEM(-100, 50, 0), 487 ); 488 static const DECLARE_TLV_DB_RANGE(max98373_limiter_thresh_tlv, 489 0, 15, TLV_DB_SCALE_ITEM(-1500, 100, 0), 490 ); 491 492 static const DECLARE_TLV_DB_RANGE(max98373_bde_gain_tlv, 493 0, 60, TLV_DB_SCALE_ITEM(-1500, 25, 0), 494 ); 495 496 static bool max98373_readable_register(struct device *dev, unsigned int reg) 497 { 498 switch (reg) { 499 case MAX98373_R2000_SW_RESET: 500 case MAX98373_R2001_INT_RAW1 ... MAX98373_R200C_INT_EN3: 501 case MAX98373_R2010_IRQ_CTRL: 502 case MAX98373_R2014_THERM_WARN_THRESH 503 ... MAX98373_R2018_THERM_FOLDBACK_EN: 504 case MAX98373_R201E_PIN_DRIVE_STRENGTH 505 ... MAX98373_R2036_SOUNDWIRE_CTRL: 506 case MAX98373_R203D_AMP_DIG_VOL_CTRL ... MAX98373_R2043_AMP_EN: 507 case MAX98373_R2046_IV_SENSE_ADC_DSP_CFG 508 ... MAX98373_R2047_IV_SENSE_ADC_EN: 509 case MAX98373_R2051_MEAS_ADC_SAMPLING_RATE 510 ... MAX98373_R2056_MEAS_ADC_PVDD_CH_EN: 511 case MAX98373_R2090_BDE_LVL_HOLD ... MAX98373_R2092_BDE_CLIPPER_MODE: 512 case MAX98373_R2097_BDE_L1_THRESH 513 ... MAX98373_R209B_BDE_THRESH_HYST: 514 case MAX98373_R20A8_BDE_L1_CFG_1 ... MAX98373_R20B3_BDE_L4_CFG_3: 515 case MAX98373_R20B5_BDE_EN ... MAX98373_R20B6_BDE_CUR_STATE_READBACK: 516 case MAX98373_R20D1_DHT_CFG ... MAX98373_R20D4_DHT_EN: 517 case MAX98373_R20E0_LIMITER_THRESH_CFG ... MAX98373_R20E2_LIMITER_EN: 518 case MAX98373_R20FE_DEVICE_AUTO_RESTART_CFG 519 ... MAX98373_R20FF_GLOBAL_SHDN: 520 case MAX98373_R21FF_REV_ID: 521 return true; 522 default: 523 return false; 524 } 525 }; 526 527 static bool max98373_volatile_reg(struct device *dev, unsigned int reg) 528 { 529 switch (reg) { 530 case MAX98373_R2000_SW_RESET ... MAX98373_R2009_INT_FLAG3: 531 case MAX98373_R203E_AMP_PATH_GAIN: 532 case MAX98373_R2054_MEAS_ADC_PVDD_CH_READBACK: 533 case MAX98373_R2055_MEAS_ADC_THERM_CH_READBACK: 534 case MAX98373_R20B6_BDE_CUR_STATE_READBACK: 535 case MAX98373_R21FF_REV_ID: 536 return true; 537 default: 538 return false; 539 } 540 } 541 542 static const char * const max98373_output_voltage_lvl_text[] = { 543 "5.43V", "6.09V", "6.83V", "7.67V", "8.60V", 544 "9.65V", "10.83V", "12.15V", "13.63V", "15.29V" 545 }; 546 547 static SOC_ENUM_SINGLE_DECL(max98373_out_volt_enum, 548 MAX98373_R203E_AMP_PATH_GAIN, 0, 549 max98373_output_voltage_lvl_text); 550 551 static const char * const max98373_dht_attack_rate_text[] = { 552 "17.5us", "35us", "70us", "140us", 553 "280us", "560us", "1120us", "2240us" 554 }; 555 556 static SOC_ENUM_SINGLE_DECL(max98373_dht_attack_rate_enum, 557 MAX98373_R20D2_DHT_ATTACK_CFG, 0, 558 max98373_dht_attack_rate_text); 559 560 static const char * const max98373_dht_release_rate_text[] = { 561 "45ms", "225ms", "450ms", "1150ms", 562 "2250ms", "3100ms", "4500ms", "6750ms" 563 }; 564 565 static SOC_ENUM_SINGLE_DECL(max98373_dht_release_rate_enum, 566 MAX98373_R20D3_DHT_RELEASE_CFG, 0, 567 max98373_dht_release_rate_text); 568 569 static const char * const max98373_limiter_attack_rate_text[] = { 570 "10us", "20us", "40us", "80us", 571 "160us", "320us", "640us", "1.28ms", 572 "2.56ms", "5.12ms", "10.24ms", "20.48ms", 573 "40.96ms", "81.92ms", "16.384ms", "32.768ms" 574 }; 575 576 static SOC_ENUM_SINGLE_DECL(max98373_limiter_attack_rate_enum, 577 MAX98373_R20E1_LIMITER_ATK_REL_RATES, 4, 578 max98373_limiter_attack_rate_text); 579 580 static const char * const max98373_limiter_release_rate_text[] = { 581 "40us", "80us", "160us", "320us", 582 "640us", "1.28ms", "2.56ms", "5.120ms", 583 "10.24ms", "20.48ms", "40.96ms", "81.92ms", 584 "163.84ms", "327.68ms", "655.36ms", "1310.72ms" 585 }; 586 587 static SOC_ENUM_SINGLE_DECL(max98373_limiter_release_rate_enum, 588 MAX98373_R20E1_LIMITER_ATK_REL_RATES, 0, 589 max98373_limiter_release_rate_text); 590 591 static const char * const max98373_ADC_samplerate_text[] = { 592 "333kHz", "192kHz", "64kHz", "48kHz" 593 }; 594 595 static SOC_ENUM_SINGLE_DECL(max98373_adc_samplerate_enum, 596 MAX98373_R2051_MEAS_ADC_SAMPLING_RATE, 0, 597 max98373_ADC_samplerate_text); 598 599 static const struct snd_kcontrol_new max98373_snd_controls[] = { 600 SOC_SINGLE("Digital Vol Sel Switch", MAX98373_R203F_AMP_DSP_CFG, 601 MAX98373_AMP_VOL_SEL_SHIFT, 1, 0), 602 SOC_SINGLE("Volume Location Switch", MAX98373_R203F_AMP_DSP_CFG, 603 MAX98373_AMP_VOL_SEL_SHIFT, 1, 0), 604 SOC_SINGLE("Ramp Up Switch", MAX98373_R203F_AMP_DSP_CFG, 605 MAX98373_AMP_DSP_CFG_RMP_UP_SHIFT, 1, 0), 606 SOC_SINGLE("Ramp Down Switch", MAX98373_R203F_AMP_DSP_CFG, 607 MAX98373_AMP_DSP_CFG_RMP_DN_SHIFT, 1, 0), 608 SOC_SINGLE("CLK Monitor Switch", MAX98373_R20FE_DEVICE_AUTO_RESTART_CFG, 609 MAX98373_CLOCK_MON_SHIFT, 1, 0), 610 SOC_SINGLE("Dither Switch", MAX98373_R203F_AMP_DSP_CFG, 611 MAX98373_AMP_DSP_CFG_DITH_SHIFT, 1, 0), 612 SOC_SINGLE("DC Blocker Switch", MAX98373_R203F_AMP_DSP_CFG, 613 MAX98373_AMP_DSP_CFG_DCBLK_SHIFT, 1, 0), 614 SOC_SINGLE_TLV("Digital Volume", MAX98373_R203D_AMP_DIG_VOL_CTRL, 615 0, 0x7F, 1, max98373_digital_tlv), 616 SOC_SINGLE_TLV("Speaker Volume", MAX98373_R203E_AMP_PATH_GAIN, 617 MAX98373_SPK_DIGI_GAIN_SHIFT, 10, 0, max98373_spk_tlv), 618 SOC_SINGLE_TLV("FS Max Volume", MAX98373_R203E_AMP_PATH_GAIN, 619 MAX98373_FS_GAIN_MAX_SHIFT, 9, 0, max98373_spkgain_max_tlv), 620 SOC_ENUM("Output Voltage", max98373_out_volt_enum), 621 /* Dynamic Headroom Tracking */ 622 SOC_SINGLE("DHT Switch", MAX98373_R20D4_DHT_EN, 623 MAX98373_DHT_EN_SHIFT, 1, 0), 624 SOC_SINGLE_TLV("DHT Min Volume", MAX98373_R20D1_DHT_CFG, 625 MAX98373_DHT_SPK_GAIN_MIN_SHIFT, 9, 0, max98373_dht_spkgain_min_tlv), 626 SOC_SINGLE_TLV("DHT Rot Pnt Volume", MAX98373_R20D1_DHT_CFG, 627 MAX98373_DHT_ROT_PNT_SHIFT, 15, 1, max98373_dht_rotation_point_tlv), 628 SOC_SINGLE_TLV("DHT Attack Step Volume", MAX98373_R20D2_DHT_ATTACK_CFG, 629 MAX98373_DHT_ATTACK_STEP_SHIFT, 4, 0, max98373_dht_step_size_tlv), 630 SOC_SINGLE_TLV("DHT Release Step Volume", MAX98373_R20D3_DHT_RELEASE_CFG, 631 MAX98373_DHT_RELEASE_STEP_SHIFT, 4, 0, max98373_dht_step_size_tlv), 632 SOC_ENUM("DHT Attack Rate", max98373_dht_attack_rate_enum), 633 SOC_ENUM("DHT Release Rate", max98373_dht_release_rate_enum), 634 /* ADC configuration */ 635 SOC_SINGLE("ADC PVDD CH Switch", MAX98373_R2056_MEAS_ADC_PVDD_CH_EN, 0, 1, 0), 636 SOC_SINGLE("ADC PVDD FLT Switch", MAX98373_R2052_MEAS_ADC_PVDD_FLT_CFG, 637 MAX98373_FLT_EN_SHIFT, 1, 0), 638 SOC_SINGLE("ADC TEMP FLT Switch", MAX98373_R2053_MEAS_ADC_THERM_FLT_CFG, 639 MAX98373_FLT_EN_SHIFT, 1, 0), 640 SOC_SINGLE("ADC PVDD", MAX98373_R2054_MEAS_ADC_PVDD_CH_READBACK, 0, 0xFF, 0), 641 SOC_SINGLE("ADC TEMP", MAX98373_R2055_MEAS_ADC_THERM_CH_READBACK, 0, 0xFF, 0), 642 SOC_SINGLE("ADC PVDD FLT Coeff", MAX98373_R2052_MEAS_ADC_PVDD_FLT_CFG, 643 0, 0x3, 0), 644 SOC_SINGLE("ADC TEMP FLT Coeff", MAX98373_R2053_MEAS_ADC_THERM_FLT_CFG, 645 0, 0x3, 0), 646 SOC_ENUM("ADC SampleRate", max98373_adc_samplerate_enum), 647 /* Brownout Detection Engine */ 648 SOC_SINGLE("BDE Switch", MAX98373_R20B5_BDE_EN, MAX98373_BDE_EN_SHIFT, 1, 0), 649 SOC_SINGLE("BDE LVL4 Mute Switch", MAX98373_R20B2_BDE_L4_CFG_2, 650 MAX98373_LVL4_MUTE_EN_SHIFT, 1, 0), 651 SOC_SINGLE("BDE LVL4 Hold Switch", MAX98373_R20B2_BDE_L4_CFG_2, 652 MAX98373_LVL4_HOLD_EN_SHIFT, 1, 0), 653 SOC_SINGLE("BDE LVL1 Thresh", MAX98373_R2097_BDE_L1_THRESH, 0, 0xFF, 0), 654 SOC_SINGLE("BDE LVL2 Thresh", MAX98373_R2098_BDE_L2_THRESH, 0, 0xFF, 0), 655 SOC_SINGLE("BDE LVL3 Thresh", MAX98373_R2099_BDE_L3_THRESH, 0, 0xFF, 0), 656 SOC_SINGLE("BDE LVL4 Thresh", MAX98373_R209A_BDE_L4_THRESH, 0, 0xFF, 0), 657 SOC_SINGLE("BDE Active Level", MAX98373_R20B6_BDE_CUR_STATE_READBACK, 0, 8, 0), 658 SOC_SINGLE("BDE Clip Mode Switch", MAX98373_R2092_BDE_CLIPPER_MODE, 0, 1, 0), 659 SOC_SINGLE("BDE Thresh Hysteresis", MAX98373_R209B_BDE_THRESH_HYST, 0, 0xFF, 0), 660 SOC_SINGLE("BDE Hold Time", MAX98373_R2090_BDE_LVL_HOLD, 0, 0xFF, 0), 661 SOC_SINGLE("BDE Attack Rate", MAX98373_R2091_BDE_GAIN_ATK_REL_RATE, 4, 0xF, 0), 662 SOC_SINGLE("BDE Release Rate", MAX98373_R2091_BDE_GAIN_ATK_REL_RATE, 0, 0xF, 0), 663 SOC_SINGLE_TLV("BDE LVL1 Clip Thresh Volume", MAX98373_R20A9_BDE_L1_CFG_2, 664 0, 0x3C, 1, max98373_bde_gain_tlv), 665 SOC_SINGLE_TLV("BDE LVL2 Clip Thresh Volume", MAX98373_R20AC_BDE_L2_CFG_2, 666 0, 0x3C, 1, max98373_bde_gain_tlv), 667 SOC_SINGLE_TLV("BDE LVL3 Clip Thresh Volume", MAX98373_R20AF_BDE_L3_CFG_2, 668 0, 0x3C, 1, max98373_bde_gain_tlv), 669 SOC_SINGLE_TLV("BDE LVL4 Clip Thresh Volume", MAX98373_R20B2_BDE_L4_CFG_2, 670 0, 0x3C, 1, max98373_bde_gain_tlv), 671 SOC_SINGLE_TLV("BDE LVL1 Clip Reduction Volume", MAX98373_R20AA_BDE_L1_CFG_3, 672 0, 0x3C, 1, max98373_bde_gain_tlv), 673 SOC_SINGLE_TLV("BDE LVL2 Clip Reduction Volume", MAX98373_R20AD_BDE_L2_CFG_3, 674 0, 0x3C, 1, max98373_bde_gain_tlv), 675 SOC_SINGLE_TLV("BDE LVL3 Clip Reduction Volume", MAX98373_R20B0_BDE_L3_CFG_3, 676 0, 0x3C, 1, max98373_bde_gain_tlv), 677 SOC_SINGLE_TLV("BDE LVL4 Clip Reduction Volume", MAX98373_R20B3_BDE_L4_CFG_3, 678 0, 0x3C, 1, max98373_bde_gain_tlv), 679 SOC_SINGLE_TLV("BDE LVL1 Limiter Thresh Volume", MAX98373_R20A8_BDE_L1_CFG_1, 680 0, 0xF, 1, max98373_limiter_thresh_tlv), 681 SOC_SINGLE_TLV("BDE LVL2 Limiter Thresh Volume", MAX98373_R20AB_BDE_L2_CFG_1, 682 0, 0xF, 1, max98373_limiter_thresh_tlv), 683 SOC_SINGLE_TLV("BDE LVL3 Limiter Thresh Volume", MAX98373_R20AE_BDE_L3_CFG_1, 684 0, 0xF, 1, max98373_limiter_thresh_tlv), 685 SOC_SINGLE_TLV("BDE LVL4 Limiter Thresh Volume", MAX98373_R20B1_BDE_L4_CFG_1, 686 0, 0xF, 1, max98373_limiter_thresh_tlv), 687 /* Limiter */ 688 SOC_SINGLE("Limiter Switch", MAX98373_R20E2_LIMITER_EN, 689 MAX98373_LIMITER_EN_SHIFT, 1, 0), 690 SOC_SINGLE("Limiter Src Switch", MAX98373_R20E0_LIMITER_THRESH_CFG, 691 MAX98373_LIMITER_THRESH_SRC_SHIFT, 1, 0), 692 SOC_SINGLE_TLV("Limiter Thresh Volume", MAX98373_R20E0_LIMITER_THRESH_CFG, 693 MAX98373_LIMITER_THRESH_SHIFT, 15, 0, max98373_limiter_thresh_tlv), 694 SOC_ENUM("Limiter Attack Rate", max98373_limiter_attack_rate_enum), 695 SOC_ENUM("Limiter Release Rate", max98373_limiter_release_rate_enum), 696 }; 697 698 static const struct snd_soc_dapm_route max98373_audio_map[] = { 699 /* Plabyack */ 700 {"DAI Sel Mux", "Left", "Amp Enable"}, 701 {"DAI Sel Mux", "Right", "Amp Enable"}, 702 {"DAI Sel Mux", "LeftRight", "Amp Enable"}, 703 {"BE_OUT", NULL, "DAI Sel Mux"}, 704 /* Capture */ 705 { "VI Sense", "Switch", "VMON" }, 706 { "VI Sense", "Switch", "IMON" }, 707 { "SpkFB Sense", "Switch", "FBMON" }, 708 { "Voltage Sense", NULL, "VI Sense" }, 709 { "Current Sense", NULL, "VI Sense" }, 710 { "Speaker FB Sense", NULL, "SpkFB Sense" }, 711 }; 712 713 static struct snd_soc_dai_driver max98373_dai[] = { 714 { 715 .name = "max98373-aif1", 716 .playback = { 717 .stream_name = "HiFi Playback", 718 .channels_min = 1, 719 .channels_max = 2, 720 .rates = MAX98373_RATES, 721 .formats = MAX98373_FORMATS, 722 }, 723 .capture = { 724 .stream_name = "HiFi Capture", 725 .channels_min = 1, 726 .channels_max = 2, 727 .rates = MAX98373_RATES, 728 .formats = MAX98373_FORMATS, 729 }, 730 .ops = &max98373_dai_ops, 731 } 732 }; 733 734 static void max98373_reset(struct max98373_priv *max98373, struct device *dev) 735 { 736 int ret, reg, count; 737 738 /* Software Reset */ 739 ret = regmap_update_bits(max98373->regmap, 740 MAX98373_R2000_SW_RESET, 741 MAX98373_SOFT_RESET, 742 MAX98373_SOFT_RESET); 743 if (ret) 744 dev_err(dev, "Reset command failed. (ret:%d)\n", ret); 745 746 count = 0; 747 while (count < 3) { 748 usleep_range(10000, 11000); 749 /* Software Reset Verification */ 750 ret = regmap_read(max98373->regmap, 751 MAX98373_R21FF_REV_ID, ®); 752 if (!ret) { 753 dev_info(dev, "Reset completed (retry:%d)\n", count); 754 return; 755 } 756 count++; 757 } 758 dev_err(dev, "Reset failed. (ret:%d)\n", ret); 759 } 760 761 static int max98373_probe(struct snd_soc_component *component) 762 { 763 struct max98373_priv *max98373 = snd_soc_component_get_drvdata(component); 764 765 /* Software Reset */ 766 max98373_reset(max98373, component->dev); 767 768 /* IV default slot configuration */ 769 regmap_write(max98373->regmap, 770 MAX98373_R2020_PCM_TX_HIZ_EN_1, 771 0xFF); 772 regmap_write(max98373->regmap, 773 MAX98373_R2021_PCM_TX_HIZ_EN_2, 774 0xFF); 775 /* L/R mix configuration */ 776 regmap_write(max98373->regmap, 777 MAX98373_R2029_PCM_TO_SPK_MONO_MIX_1, 778 0x80); 779 regmap_write(max98373->regmap, 780 MAX98373_R202A_PCM_TO_SPK_MONO_MIX_2, 781 0x1); 782 /* Set inital volume (0dB) */ 783 regmap_write(max98373->regmap, 784 MAX98373_R203D_AMP_DIG_VOL_CTRL, 785 0x00); 786 regmap_write(max98373->regmap, 787 MAX98373_R203E_AMP_PATH_GAIN, 788 0x00); 789 /* Enable DC blocker */ 790 regmap_write(max98373->regmap, 791 MAX98373_R203F_AMP_DSP_CFG, 792 0x3); 793 /* Enable IMON VMON DC blocker */ 794 regmap_write(max98373->regmap, 795 MAX98373_R2046_IV_SENSE_ADC_DSP_CFG, 796 0x7); 797 /* voltage, current slot configuration */ 798 regmap_write(max98373->regmap, 799 MAX98373_R2022_PCM_TX_SRC_1, 800 (max98373->i_slot << MAX98373_PCM_TX_CH_SRC_A_I_SHIFT | 801 max98373->v_slot) & 0xFF); 802 if (max98373->v_slot < 8) 803 regmap_update_bits(max98373->regmap, 804 MAX98373_R2020_PCM_TX_HIZ_EN_1, 805 1 << max98373->v_slot, 0); 806 else 807 regmap_update_bits(max98373->regmap, 808 MAX98373_R2021_PCM_TX_HIZ_EN_2, 809 1 << (max98373->v_slot - 8), 0); 810 811 if (max98373->i_slot < 8) 812 regmap_update_bits(max98373->regmap, 813 MAX98373_R2020_PCM_TX_HIZ_EN_1, 814 1 << max98373->i_slot, 0); 815 else 816 regmap_update_bits(max98373->regmap, 817 MAX98373_R2021_PCM_TX_HIZ_EN_2, 818 1 << (max98373->i_slot - 8), 0); 819 820 /* speaker feedback slot configuration */ 821 regmap_write(max98373->regmap, 822 MAX98373_R2023_PCM_TX_SRC_2, 823 max98373->spkfb_slot & 0xFF); 824 825 /* Set interleave mode */ 826 if (max98373->interleave_mode) 827 regmap_update_bits(max98373->regmap, 828 MAX98373_R2024_PCM_DATA_FMT_CFG, 829 MAX98373_PCM_TX_CH_INTERLEAVE_MASK, 830 MAX98373_PCM_TX_CH_INTERLEAVE_MASK); 831 832 /* Speaker enable */ 833 regmap_update_bits(max98373->regmap, 834 MAX98373_R2043_AMP_EN, 835 MAX98373_SPK_EN_MASK, 1); 836 837 return 0; 838 } 839 840 #ifdef CONFIG_PM_SLEEP 841 static int max98373_suspend(struct device *dev) 842 { 843 struct max98373_priv *max98373 = dev_get_drvdata(dev); 844 845 regcache_cache_only(max98373->regmap, true); 846 regcache_mark_dirty(max98373->regmap); 847 return 0; 848 } 849 static int max98373_resume(struct device *dev) 850 { 851 struct max98373_priv *max98373 = dev_get_drvdata(dev); 852 853 max98373_reset(max98373, dev); 854 regcache_cache_only(max98373->regmap, false); 855 regcache_sync(max98373->regmap); 856 return 0; 857 } 858 #endif 859 860 static const struct dev_pm_ops max98373_pm = { 861 SET_SYSTEM_SLEEP_PM_OPS(max98373_suspend, max98373_resume) 862 }; 863 864 static const struct snd_soc_component_driver soc_codec_dev_max98373 = { 865 .probe = max98373_probe, 866 .controls = max98373_snd_controls, 867 .num_controls = ARRAY_SIZE(max98373_snd_controls), 868 .dapm_widgets = max98373_dapm_widgets, 869 .num_dapm_widgets = ARRAY_SIZE(max98373_dapm_widgets), 870 .dapm_routes = max98373_audio_map, 871 .num_dapm_routes = ARRAY_SIZE(max98373_audio_map), 872 .idle_bias_on = 1, 873 .use_pmdown_time = 1, 874 .endianness = 1, 875 .non_legacy_dai_naming = 1, 876 }; 877 878 static const struct regmap_config max98373_regmap = { 879 .reg_bits = 16, 880 .val_bits = 8, 881 .max_register = MAX98373_R21FF_REV_ID, 882 .reg_defaults = max98373_reg, 883 .num_reg_defaults = ARRAY_SIZE(max98373_reg), 884 .readable_reg = max98373_readable_register, 885 .volatile_reg = max98373_volatile_reg, 886 .cache_type = REGCACHE_RBTREE, 887 }; 888 889 static void max98373_slot_config(struct i2c_client *i2c, 890 struct max98373_priv *max98373) 891 { 892 int value; 893 struct device *dev = &i2c->dev; 894 895 if (!device_property_read_u32(dev, "maxim,vmon-slot-no", &value)) 896 max98373->v_slot = value & 0xF; 897 else 898 max98373->v_slot = 0; 899 900 if (!device_property_read_u32(dev, "maxim,imon-slot-no", &value)) 901 max98373->i_slot = value & 0xF; 902 else 903 max98373->i_slot = 1; 904 905 max98373->reset_gpio = of_get_named_gpio(dev->of_node, 906 "maxim,reset-gpio", 0); 907 if (!gpio_is_valid(max98373->reset_gpio)) { 908 dev_err(dev, "Looking up %s property in node %s failed %d\n", 909 "maxim,reset-gpio", dev->of_node->full_name, 910 max98373->reset_gpio); 911 } else { 912 dev_dbg(dev, "maxim,reset-gpio=%d", 913 max98373->reset_gpio); 914 } 915 916 if (!device_property_read_u32(dev, "maxim,spkfb-slot-no", &value)) 917 max98373->spkfb_slot = value & 0xF; 918 else 919 max98373->spkfb_slot = 2; 920 } 921 922 static int max98373_i2c_probe(struct i2c_client *i2c, 923 const struct i2c_device_id *id) 924 { 925 926 int ret = 0; 927 int reg = 0; 928 struct max98373_priv *max98373 = NULL; 929 930 max98373 = devm_kzalloc(&i2c->dev, sizeof(*max98373), GFP_KERNEL); 931 932 if (!max98373) { 933 ret = -ENOMEM; 934 return ret; 935 } 936 i2c_set_clientdata(i2c, max98373); 937 938 /* update interleave mode info */ 939 if (device_property_read_bool(&i2c->dev, "maxim,interleave_mode")) 940 max98373->interleave_mode = true; 941 else 942 max98373->interleave_mode = false; 943 944 /* regmap initialization */ 945 max98373->regmap 946 = devm_regmap_init_i2c(i2c, &max98373_regmap); 947 if (IS_ERR(max98373->regmap)) { 948 ret = PTR_ERR(max98373->regmap); 949 dev_err(&i2c->dev, 950 "Failed to allocate regmap: %d\n", ret); 951 return ret; 952 } 953 954 /* voltage/current slot & gpio configuration */ 955 max98373_slot_config(i2c, max98373); 956 957 /* Power on device */ 958 if (gpio_is_valid(max98373->reset_gpio)) { 959 ret = gpio_request(max98373->reset_gpio, "MAX98373_RESET"); 960 if (ret) { 961 dev_err(&i2c->dev, "%s: Failed to request gpio %d\n", 962 __func__, max98373->reset_gpio); 963 gpio_free(max98373->reset_gpio); 964 return -EINVAL; 965 } 966 gpio_direction_output(max98373->reset_gpio, 0); 967 msleep(50); 968 gpio_direction_output(max98373->reset_gpio, 1); 969 msleep(20); 970 } 971 972 /* Check Revision ID */ 973 ret = regmap_read(max98373->regmap, 974 MAX98373_R21FF_REV_ID, ®); 975 if (ret < 0) { 976 dev_err(&i2c->dev, 977 "Failed to read: 0x%02X\n", MAX98373_R21FF_REV_ID); 978 return ret; 979 } 980 dev_info(&i2c->dev, "MAX98373 revisionID: 0x%02X\n", reg); 981 982 /* codec registeration */ 983 ret = devm_snd_soc_register_component(&i2c->dev, &soc_codec_dev_max98373, 984 max98373_dai, ARRAY_SIZE(max98373_dai)); 985 if (ret < 0) 986 dev_err(&i2c->dev, "Failed to register codec: %d\n", ret); 987 988 return ret; 989 } 990 991 static const struct i2c_device_id max98373_i2c_id[] = { 992 { "max98373", 0}, 993 { }, 994 }; 995 996 MODULE_DEVICE_TABLE(i2c, max98373_i2c_id); 997 998 #if defined(CONFIG_OF) 999 static const struct of_device_id max98373_of_match[] = { 1000 { .compatible = "maxim,max98373", }, 1001 { } 1002 }; 1003 MODULE_DEVICE_TABLE(of, max98373_of_match); 1004 #endif 1005 1006 #ifdef CONFIG_ACPI 1007 static const struct acpi_device_id max98373_acpi_match[] = { 1008 { "MX98373", 0 }, 1009 {}, 1010 }; 1011 MODULE_DEVICE_TABLE(acpi, max98373_acpi_match); 1012 #endif 1013 1014 static struct i2c_driver max98373_i2c_driver = { 1015 .driver = { 1016 .name = "max98373", 1017 .of_match_table = of_match_ptr(max98373_of_match), 1018 .acpi_match_table = ACPI_PTR(max98373_acpi_match), 1019 .pm = &max98373_pm, 1020 }, 1021 .probe = max98373_i2c_probe, 1022 .id_table = max98373_i2c_id, 1023 }; 1024 1025 module_i2c_driver(max98373_i2c_driver) 1026 1027 MODULE_DESCRIPTION("ALSA SoC MAX98373 driver"); 1028 MODULE_AUTHOR("Ryan Lee <ryans.lee@maximintegrated.com>"); 1029 MODULE_LICENSE("GPL"); 1030