1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * Nuvoton NAU8825 audio codec driver 4 * 5 * Copyright 2015 Google Chromium project. 6 * Author: Anatol Pomozov <anatol@chromium.org> 7 * Copyright 2015 Nuvoton Technology Corp. 8 * Co-author: Meng-Huang Kuo <mhkuo@nuvoton.com> 9 */ 10 11 #include <linux/module.h> 12 #include <linux/delay.h> 13 #include <linux/init.h> 14 #include <linux/int_log.h> 15 #include <linux/i2c.h> 16 #include <linux/regmap.h> 17 #include <linux/slab.h> 18 #include <linux/clk.h> 19 #include <linux/acpi.h> 20 #include <linux/math64.h> 21 #include <linux/semaphore.h> 22 23 #include <sound/initval.h> 24 #include <sound/tlv.h> 25 #include <sound/core.h> 26 #include <sound/pcm.h> 27 #include <sound/pcm_params.h> 28 #include <sound/soc.h> 29 #include <sound/jack.h> 30 31 32 #include "nau8825.h" 33 34 35 #define NUVOTON_CODEC_DAI "nau8825-hifi" 36 37 #define NAU_FREF_MAX 13500000 38 #define NAU_FVCO_MAX 124000000 39 #define NAU_FVCO_MIN 90000000 40 41 /* cross talk suppression detection */ 42 #define GAIN_AUGMENT 22500 43 #define SIDETONE_BASE 207000 44 45 /* the maximum frequency of CLK_ADC and CLK_DAC */ 46 #define CLK_DA_AD_MAX 6144000 47 48 static int nau8825_configure_sysclk(struct nau8825 *nau8825, 49 int clk_id, unsigned int freq); 50 static bool nau8825_is_jack_inserted(struct regmap *regmap); 51 52 struct nau8825_fll { 53 int mclk_src; 54 int ratio; 55 int fll_frac; 56 int fll_frac_num; 57 int fll_int; 58 int clk_ref_div; 59 }; 60 61 struct nau8825_fll_attr { 62 unsigned int param; 63 unsigned int val; 64 }; 65 66 /* scaling for mclk from sysclk_src output */ 67 static const struct nau8825_fll_attr mclk_src_scaling[] = { 68 { 1, 0x0 }, 69 { 2, 0x2 }, 70 { 4, 0x3 }, 71 { 8, 0x4 }, 72 { 16, 0x5 }, 73 { 32, 0x6 }, 74 { 3, 0x7 }, 75 { 6, 0xa }, 76 { 12, 0xb }, 77 { 24, 0xc }, 78 { 48, 0xd }, 79 { 96, 0xe }, 80 { 5, 0xf }, 81 }; 82 83 /* ratio for input clk freq */ 84 static const struct nau8825_fll_attr fll_ratio[] = { 85 { 512000, 0x01 }, 86 { 256000, 0x02 }, 87 { 128000, 0x04 }, 88 { 64000, 0x08 }, 89 { 32000, 0x10 }, 90 { 8000, 0x20 }, 91 { 4000, 0x40 }, 92 }; 93 94 static const struct nau8825_fll_attr fll_pre_scalar[] = { 95 { 1, 0x0 }, 96 { 2, 0x1 }, 97 { 4, 0x2 }, 98 { 8, 0x3 }, 99 }; 100 101 /* over sampling rate */ 102 struct nau8825_osr_attr { 103 unsigned int osr; 104 unsigned int clk_src; 105 }; 106 107 static const struct nau8825_osr_attr osr_dac_sel[] = { 108 { 64, 2 }, /* OSR 64, SRC 1/4 */ 109 { 256, 0 }, /* OSR 256, SRC 1 */ 110 { 128, 1 }, /* OSR 128, SRC 1/2 */ 111 { 0, 0 }, 112 { 32, 3 }, /* OSR 32, SRC 1/8 */ 113 }; 114 115 static const struct nau8825_osr_attr osr_adc_sel[] = { 116 { 32, 3 }, /* OSR 32, SRC 1/8 */ 117 { 64, 2 }, /* OSR 64, SRC 1/4 */ 118 { 128, 1 }, /* OSR 128, SRC 1/2 */ 119 { 256, 0 }, /* OSR 256, SRC 1 */ 120 }; 121 122 static const struct reg_default nau8825_reg_defaults[] = { 123 { NAU8825_REG_ENA_CTRL, 0x00ff }, 124 { NAU8825_REG_IIC_ADDR_SET, 0x0 }, 125 { NAU8825_REG_CLK_DIVIDER, 0x0050 }, 126 { NAU8825_REG_FLL1, 0x0 }, 127 { NAU8825_REG_FLL2, 0x3126 }, 128 { NAU8825_REG_FLL3, 0x0008 }, 129 { NAU8825_REG_FLL4, 0x0010 }, 130 { NAU8825_REG_FLL5, 0x0 }, 131 { NAU8825_REG_FLL6, 0x6000 }, 132 { NAU8825_REG_FLL_VCO_RSV, 0xf13c }, 133 { NAU8825_REG_HSD_CTRL, 0x000c }, 134 { NAU8825_REG_JACK_DET_CTRL, 0x0 }, 135 { NAU8825_REG_INTERRUPT_MASK, 0x0 }, 136 { NAU8825_REG_INTERRUPT_DIS_CTRL, 0xffff }, 137 { NAU8825_REG_SAR_CTRL, 0x0015 }, 138 { NAU8825_REG_KEYDET_CTRL, 0x0110 }, 139 { NAU8825_REG_VDET_THRESHOLD_1, 0x0 }, 140 { NAU8825_REG_VDET_THRESHOLD_2, 0x0 }, 141 { NAU8825_REG_VDET_THRESHOLD_3, 0x0 }, 142 { NAU8825_REG_VDET_THRESHOLD_4, 0x0 }, 143 { NAU8825_REG_GPIO34_CTRL, 0x0 }, 144 { NAU8825_REG_GPIO12_CTRL, 0x0 }, 145 { NAU8825_REG_TDM_CTRL, 0x0 }, 146 { NAU8825_REG_I2S_PCM_CTRL1, 0x000b }, 147 { NAU8825_REG_I2S_PCM_CTRL2, 0x8010 }, 148 { NAU8825_REG_LEFT_TIME_SLOT, 0x0 }, 149 { NAU8825_REG_RIGHT_TIME_SLOT, 0x0 }, 150 { NAU8825_REG_BIQ_CTRL, 0x0 }, 151 { NAU8825_REG_BIQ_COF1, 0x0 }, 152 { NAU8825_REG_BIQ_COF2, 0x0 }, 153 { NAU8825_REG_BIQ_COF3, 0x0 }, 154 { NAU8825_REG_BIQ_COF4, 0x0 }, 155 { NAU8825_REG_BIQ_COF5, 0x0 }, 156 { NAU8825_REG_BIQ_COF6, 0x0 }, 157 { NAU8825_REG_BIQ_COF7, 0x0 }, 158 { NAU8825_REG_BIQ_COF8, 0x0 }, 159 { NAU8825_REG_BIQ_COF9, 0x0 }, 160 { NAU8825_REG_BIQ_COF10, 0x0 }, 161 { NAU8825_REG_ADC_RATE, 0x0010 }, 162 { NAU8825_REG_DAC_CTRL1, 0x0001 }, 163 { NAU8825_REG_DAC_CTRL2, 0x0 }, 164 { NAU8825_REG_DAC_DGAIN_CTRL, 0x0 }, 165 { NAU8825_REG_ADC_DGAIN_CTRL, 0x00cf }, 166 { NAU8825_REG_MUTE_CTRL, 0x0 }, 167 { NAU8825_REG_HSVOL_CTRL, 0x0 }, 168 { NAU8825_REG_DACL_CTRL, 0x02cf }, 169 { NAU8825_REG_DACR_CTRL, 0x00cf }, 170 { NAU8825_REG_ADC_DRC_KNEE_IP12, 0x1486 }, 171 { NAU8825_REG_ADC_DRC_KNEE_IP34, 0x0f12 }, 172 { NAU8825_REG_ADC_DRC_SLOPES, 0x25ff }, 173 { NAU8825_REG_ADC_DRC_ATKDCY, 0x3457 }, 174 { NAU8825_REG_DAC_DRC_KNEE_IP12, 0x1486 }, 175 { NAU8825_REG_DAC_DRC_KNEE_IP34, 0x0f12 }, 176 { NAU8825_REG_DAC_DRC_SLOPES, 0x25f9 }, 177 { NAU8825_REG_DAC_DRC_ATKDCY, 0x3457 }, 178 { NAU8825_REG_IMM_MODE_CTRL, 0x0 }, 179 { NAU8825_REG_CLASSG_CTRL, 0x0 }, 180 { NAU8825_REG_OPT_EFUSE_CTRL, 0x0 }, 181 { NAU8825_REG_MISC_CTRL, 0x0 }, 182 { NAU8825_REG_FLL2_LOWER, 0x0 }, 183 { NAU8825_REG_FLL2_UPPER, 0x0 }, 184 { NAU8825_REG_BIAS_ADJ, 0x0 }, 185 { NAU8825_REG_TRIM_SETTINGS, 0x0 }, 186 { NAU8825_REG_ANALOG_CONTROL_1, 0x0 }, 187 { NAU8825_REG_ANALOG_CONTROL_2, 0x0 }, 188 { NAU8825_REG_ANALOG_ADC_1, 0x0011 }, 189 { NAU8825_REG_ANALOG_ADC_2, 0x0020 }, 190 { NAU8825_REG_RDAC, 0x0008 }, 191 { NAU8825_REG_MIC_BIAS, 0x0006 }, 192 { NAU8825_REG_BOOST, 0x0 }, 193 { NAU8825_REG_FEPGA, 0x0 }, 194 { NAU8825_REG_POWER_UP_CONTROL, 0x0 }, 195 { NAU8825_REG_CHARGE_PUMP, 0x0 }, 196 }; 197 198 /* register backup table when cross talk detection */ 199 static struct reg_default nau8825_xtalk_baktab[] = { 200 { NAU8825_REG_ADC_DGAIN_CTRL, 0x00cf }, 201 { NAU8825_REG_HSVOL_CTRL, 0 }, 202 { NAU8825_REG_DACL_CTRL, 0x00cf }, 203 { NAU8825_REG_DACR_CTRL, 0x02cf }, 204 }; 205 206 /* The regmap patch for Rev C */ 207 static const struct reg_sequence nau8825_regmap_patch[] = { 208 { NAU8825_REG_FLL2, 0x0000 }, 209 { NAU8825_REG_FLL4, 0x8010 }, 210 { NAU8825_REG_FLL_VCO_RSV, 0x0bc0 }, 211 { NAU8825_REG_INTERRUPT_MASK, 0x0800 }, 212 { NAU8825_REG_DACL_CTRL, 0x00cf }, 213 { NAU8825_REG_DACR_CTRL, 0x02cf }, 214 { NAU8825_REG_OPT_EFUSE_CTRL, 0x0400 }, 215 { NAU8825_REG_FLL2_LOWER, 0x26e9 }, 216 { NAU8825_REG_FLL2_UPPER, 0x0031 }, 217 { NAU8825_REG_ANALOG_CONTROL_2, 0x0020 }, 218 { NAU8825_REG_ANALOG_ADC_2, 0x0220 }, 219 { NAU8825_REG_MIC_BIAS, 0x0046 }, 220 }; 221 222 /** 223 * nau8825_sema_acquire - acquire the semaphore of nau88l25 224 * @nau8825: component to register the codec private data with 225 * @timeout: how long in jiffies to wait before failure or zero to wait 226 * until release 227 * 228 * Attempts to acquire the semaphore with number of jiffies. If no more 229 * tasks are allowed to acquire the semaphore, calling this function will 230 * put the task to sleep. If the semaphore is not released within the 231 * specified number of jiffies, this function returns. 232 * If the semaphore is not released within the specified number of jiffies, 233 * this function returns -ETIME. If the sleep is interrupted by a signal, 234 * this function will return -EINTR. It returns 0 if the semaphore was 235 * acquired successfully. 236 * 237 * Acquires the semaphore without jiffies. Try to acquire the semaphore 238 * atomically. Returns 0 if the semaphore has been acquired successfully 239 * or 1 if it cannot be acquired. 240 */ 241 static int nau8825_sema_acquire(struct nau8825 *nau8825, long timeout) 242 { 243 int ret; 244 245 if (timeout) { 246 ret = down_timeout(&nau8825->xtalk_sem, timeout); 247 if (ret < 0) 248 dev_warn(nau8825->dev, "Acquire semaphore timeout\n"); 249 } else { 250 ret = down_trylock(&nau8825->xtalk_sem); 251 if (ret) 252 dev_warn(nau8825->dev, "Acquire semaphore fail\n"); 253 } 254 255 return ret; 256 } 257 258 /** 259 * nau8825_sema_release - release the semaphore of nau88l25 260 * @nau8825: component to register the codec private data with 261 * 262 * Release the semaphore which may be called from any context and 263 * even by tasks which have never called down(). 264 */ 265 static inline void nau8825_sema_release(struct nau8825 *nau8825) 266 { 267 up(&nau8825->xtalk_sem); 268 } 269 270 /** 271 * nau8825_sema_reset - reset the semaphore for nau88l25 272 * @nau8825: component to register the codec private data with 273 * 274 * Reset the counter of the semaphore. Call this function to restart 275 * a new round task management. 276 */ 277 static inline void nau8825_sema_reset(struct nau8825 *nau8825) 278 { 279 nau8825->xtalk_sem.count = 1; 280 } 281 282 /** 283 * nau8825_hpvol_ramp - Ramp up the headphone volume change gradually to target level. 284 * 285 * @nau8825: component to register the codec private data with 286 * @vol_from: the volume to start up 287 * @vol_to: the target volume 288 * @step: the volume span to move on 289 * 290 * The headphone volume is from 0dB to minimum -54dB and -1dB per step. 291 * If the volume changes sharp, there is a pop noise heard in headphone. We 292 * provide the function to ramp up the volume up or down by delaying 10ms 293 * per step. 294 */ 295 static void nau8825_hpvol_ramp(struct nau8825 *nau8825, 296 unsigned int vol_from, unsigned int vol_to, unsigned int step) 297 { 298 unsigned int value, volume, ramp_up, from, to; 299 300 if (vol_from == vol_to || step == 0) { 301 return; 302 } else if (vol_from < vol_to) { 303 ramp_up = true; 304 from = vol_from; 305 to = vol_to; 306 } else { 307 ramp_up = false; 308 from = vol_to; 309 to = vol_from; 310 } 311 /* only handle volume from 0dB to minimum -54dB */ 312 if (to > NAU8825_HP_VOL_MIN) 313 to = NAU8825_HP_VOL_MIN; 314 315 for (volume = from; volume < to; volume += step) { 316 if (ramp_up) 317 value = volume; 318 else 319 value = to - volume + from; 320 regmap_update_bits(nau8825->regmap, NAU8825_REG_HSVOL_CTRL, 321 NAU8825_HPL_VOL_MASK | NAU8825_HPR_VOL_MASK, 322 (value << NAU8825_HPL_VOL_SFT) | value); 323 usleep_range(10000, 10500); 324 } 325 if (ramp_up) 326 value = to; 327 else 328 value = from; 329 regmap_update_bits(nau8825->regmap, NAU8825_REG_HSVOL_CTRL, 330 NAU8825_HPL_VOL_MASK | NAU8825_HPR_VOL_MASK, 331 (value << NAU8825_HPL_VOL_SFT) | value); 332 } 333 334 /** 335 * nau8825_intlog10_dec3 - Computes log10 of a value, rounding the result to 3 decimal places. 336 * @value: input for log10 337 * 338 * return log10(value) * 1000 339 */ 340 static u32 nau8825_intlog10_dec3(u32 value) 341 { 342 return intlog10(value) / ((1 << 24) / 1000); 343 } 344 345 /** 346 * nau8825_xtalk_sidetone - computes cross talk suppression sidetone gain. 347 * 348 * @sig_org: orignal signal level 349 * @sig_cros: cross talk signal level 350 * 351 * The orignal and cross talk signal vlues need to be characterized. 352 * Once these values have been characterized, this sidetone value 353 * can be converted to decibel with the equation below. 354 * sidetone = 20 * log (original signal level / crosstalk signal level) 355 * 356 * return cross talk sidetone gain 357 */ 358 static u32 nau8825_xtalk_sidetone(u32 sig_org, u32 sig_cros) 359 { 360 u32 gain, sidetone; 361 362 if (WARN_ON(sig_org == 0 || sig_cros == 0)) 363 return 0; 364 365 sig_org = nau8825_intlog10_dec3(sig_org); 366 sig_cros = nau8825_intlog10_dec3(sig_cros); 367 if (sig_org >= sig_cros) 368 gain = (sig_org - sig_cros) * 20 + GAIN_AUGMENT; 369 else 370 gain = (sig_cros - sig_org) * 20 + GAIN_AUGMENT; 371 sidetone = SIDETONE_BASE - gain * 2; 372 sidetone /= 1000; 373 374 return sidetone; 375 } 376 377 static int nau8825_xtalk_baktab_index_by_reg(unsigned int reg) 378 { 379 int index; 380 381 for (index = 0; index < ARRAY_SIZE(nau8825_xtalk_baktab); index++) 382 if (nau8825_xtalk_baktab[index].reg == reg) 383 return index; 384 return -EINVAL; 385 } 386 387 static void nau8825_xtalk_backup(struct nau8825 *nau8825) 388 { 389 int i; 390 391 if (nau8825->xtalk_baktab_initialized) 392 return; 393 394 /* Backup some register values to backup table */ 395 for (i = 0; i < ARRAY_SIZE(nau8825_xtalk_baktab); i++) 396 regmap_read(nau8825->regmap, nau8825_xtalk_baktab[i].reg, 397 &nau8825_xtalk_baktab[i].def); 398 399 nau8825->xtalk_baktab_initialized = true; 400 } 401 402 static void nau8825_xtalk_restore(struct nau8825 *nau8825, bool cause_cancel) 403 { 404 int i, volume; 405 406 if (!nau8825->xtalk_baktab_initialized) 407 return; 408 409 /* Restore register values from backup table; When the driver restores 410 * the headphone volume in XTALK_DONE state, it needs recover to 411 * original level gradually with 3dB per step for less pop noise. 412 * Otherwise, the restore should do ASAP. 413 */ 414 for (i = 0; i < ARRAY_SIZE(nau8825_xtalk_baktab); i++) { 415 if (!cause_cancel && nau8825_xtalk_baktab[i].reg == 416 NAU8825_REG_HSVOL_CTRL) { 417 /* Ramping up the volume change to reduce pop noise */ 418 volume = nau8825_xtalk_baktab[i].def & 419 NAU8825_HPR_VOL_MASK; 420 nau8825_hpvol_ramp(nau8825, 0, volume, 3); 421 continue; 422 } 423 regmap_write(nau8825->regmap, nau8825_xtalk_baktab[i].reg, 424 nau8825_xtalk_baktab[i].def); 425 } 426 427 nau8825->xtalk_baktab_initialized = false; 428 } 429 430 static void nau8825_xtalk_prepare_dac(struct nau8825 *nau8825) 431 { 432 /* Enable power of DAC path */ 433 regmap_update_bits(nau8825->regmap, NAU8825_REG_ENA_CTRL, 434 NAU8825_ENABLE_DACR | NAU8825_ENABLE_DACL | 435 NAU8825_ENABLE_ADC | NAU8825_ENABLE_ADC_CLK | 436 NAU8825_ENABLE_DAC_CLK, NAU8825_ENABLE_DACR | 437 NAU8825_ENABLE_DACL | NAU8825_ENABLE_ADC | 438 NAU8825_ENABLE_ADC_CLK | NAU8825_ENABLE_DAC_CLK); 439 /* Prevent startup click by letting charge pump to ramp up and 440 * change bump enable 441 */ 442 regmap_update_bits(nau8825->regmap, NAU8825_REG_CHARGE_PUMP, 443 NAU8825_JAMNODCLOW | NAU8825_CHANRGE_PUMP_EN, 444 NAU8825_JAMNODCLOW | NAU8825_CHANRGE_PUMP_EN); 445 /* Enable clock sync of DAC and DAC clock */ 446 regmap_update_bits(nau8825->regmap, NAU8825_REG_RDAC, 447 NAU8825_RDAC_EN | NAU8825_RDAC_CLK_EN | 448 NAU8825_RDAC_FS_BCLK_ENB, 449 NAU8825_RDAC_EN | NAU8825_RDAC_CLK_EN); 450 /* Power up output driver with 2 stage */ 451 regmap_update_bits(nau8825->regmap, NAU8825_REG_POWER_UP_CONTROL, 452 NAU8825_POWERUP_INTEGR_R | NAU8825_POWERUP_INTEGR_L | 453 NAU8825_POWERUP_DRV_IN_R | NAU8825_POWERUP_DRV_IN_L, 454 NAU8825_POWERUP_INTEGR_R | NAU8825_POWERUP_INTEGR_L | 455 NAU8825_POWERUP_DRV_IN_R | NAU8825_POWERUP_DRV_IN_L); 456 regmap_update_bits(nau8825->regmap, NAU8825_REG_POWER_UP_CONTROL, 457 NAU8825_POWERUP_HP_DRV_R | NAU8825_POWERUP_HP_DRV_L, 458 NAU8825_POWERUP_HP_DRV_R | NAU8825_POWERUP_HP_DRV_L); 459 /* HP outputs not shouted to ground */ 460 regmap_update_bits(nau8825->regmap, NAU8825_REG_HSD_CTRL, 461 NAU8825_SPKR_DWN1R | NAU8825_SPKR_DWN1L, 0); 462 /* Enable HP boost driver */ 463 regmap_update_bits(nau8825->regmap, NAU8825_REG_BOOST, 464 NAU8825_HP_BOOST_DIS, NAU8825_HP_BOOST_DIS); 465 /* Enable class G compare path to supply 1.8V or 0.9V. */ 466 regmap_update_bits(nau8825->regmap, NAU8825_REG_CLASSG_CTRL, 467 NAU8825_CLASSG_LDAC_EN | NAU8825_CLASSG_RDAC_EN, 468 NAU8825_CLASSG_LDAC_EN | NAU8825_CLASSG_RDAC_EN); 469 } 470 471 static void nau8825_xtalk_prepare_adc(struct nau8825 *nau8825) 472 { 473 /* Power up left ADC and raise 5dB than Vmid for Vref */ 474 regmap_update_bits(nau8825->regmap, NAU8825_REG_ANALOG_ADC_2, 475 NAU8825_POWERUP_ADCL | NAU8825_ADC_VREFSEL_MASK, 476 NAU8825_POWERUP_ADCL | NAU8825_ADC_VREFSEL_VMID_PLUS_0_5DB); 477 } 478 479 static void nau8825_xtalk_clock(struct nau8825 *nau8825) 480 { 481 /* Recover FLL default value */ 482 regmap_write(nau8825->regmap, NAU8825_REG_FLL1, 0x0); 483 regmap_write(nau8825->regmap, NAU8825_REG_FLL2, 0x3126); 484 regmap_write(nau8825->regmap, NAU8825_REG_FLL3, 0x0008); 485 regmap_write(nau8825->regmap, NAU8825_REG_FLL4, 0x0010); 486 regmap_write(nau8825->regmap, NAU8825_REG_FLL5, 0x0); 487 regmap_write(nau8825->regmap, NAU8825_REG_FLL6, 0x6000); 488 /* Enable internal VCO clock for detection signal generated */ 489 regmap_update_bits(nau8825->regmap, NAU8825_REG_CLK_DIVIDER, 490 NAU8825_CLK_SRC_MASK, NAU8825_CLK_SRC_VCO); 491 regmap_update_bits(nau8825->regmap, NAU8825_REG_FLL6, NAU8825_DCO_EN, 492 NAU8825_DCO_EN); 493 /* Given specific clock frequency of internal clock to 494 * generate signal. 495 */ 496 regmap_update_bits(nau8825->regmap, NAU8825_REG_CLK_DIVIDER, 497 NAU8825_CLK_MCLK_SRC_MASK, 0xf); 498 regmap_update_bits(nau8825->regmap, NAU8825_REG_FLL1, 499 NAU8825_FLL_RATIO_MASK, 0x10); 500 } 501 502 static void nau8825_xtalk_prepare(struct nau8825 *nau8825) 503 { 504 int volume, index; 505 506 /* Backup those registers changed by cross talk detection */ 507 nau8825_xtalk_backup(nau8825); 508 /* Config IIS as master to output signal by codec */ 509 regmap_update_bits(nau8825->regmap, NAU8825_REG_I2S_PCM_CTRL2, 510 NAU8825_I2S_MS_MASK | NAU8825_I2S_LRC_DIV_MASK | 511 NAU8825_I2S_BLK_DIV_MASK, NAU8825_I2S_MS_MASTER | 512 (0x2 << NAU8825_I2S_LRC_DIV_SFT) | 0x1); 513 /* Ramp up headphone volume to 0dB to get better performance and 514 * avoid pop noise in headphone. 515 */ 516 index = nau8825_xtalk_baktab_index_by_reg(NAU8825_REG_HSVOL_CTRL); 517 if (index != -EINVAL) { 518 volume = nau8825_xtalk_baktab[index].def & 519 NAU8825_HPR_VOL_MASK; 520 nau8825_hpvol_ramp(nau8825, volume, 0, 3); 521 } 522 nau8825_xtalk_clock(nau8825); 523 nau8825_xtalk_prepare_dac(nau8825); 524 nau8825_xtalk_prepare_adc(nau8825); 525 /* Config channel path and digital gain */ 526 regmap_update_bits(nau8825->regmap, NAU8825_REG_DACL_CTRL, 527 NAU8825_DACL_CH_SEL_MASK | NAU8825_DACL_CH_VOL_MASK, 528 NAU8825_DACL_CH_SEL_L | 0xab); 529 regmap_update_bits(nau8825->regmap, NAU8825_REG_DACR_CTRL, 530 NAU8825_DACR_CH_SEL_MASK | NAU8825_DACR_CH_VOL_MASK, 531 NAU8825_DACR_CH_SEL_R | 0xab); 532 /* Config cross talk parameters and generate the 23Hz sine wave with 533 * 1/16 full scale of signal level for impedance measurement. 534 */ 535 regmap_update_bits(nau8825->regmap, NAU8825_REG_IMM_MODE_CTRL, 536 NAU8825_IMM_THD_MASK | NAU8825_IMM_GEN_VOL_MASK | 537 NAU8825_IMM_CYC_MASK | NAU8825_IMM_DAC_SRC_MASK, 538 (0x9 << NAU8825_IMM_THD_SFT) | NAU8825_IMM_GEN_VOL_1_16th | 539 NAU8825_IMM_CYC_8192 | NAU8825_IMM_DAC_SRC_SIN); 540 /* RMS intrruption enable */ 541 regmap_update_bits(nau8825->regmap, 542 NAU8825_REG_INTERRUPT_MASK, NAU8825_IRQ_RMS_EN, 0); 543 /* Power up left and right DAC */ 544 if (nau8825->sw_id == NAU8825_SOFTWARE_ID_NAU8825) 545 regmap_update_bits(nau8825->regmap, NAU8825_REG_CHARGE_PUMP, 546 NAU8825_POWER_DOWN_DACR | NAU8825_POWER_DOWN_DACL, 0); 547 else 548 regmap_update_bits(nau8825->regmap, NAU8825_REG_CHARGE_PUMP, 549 NAU8825_POWER_DOWN_DACR | NAU8825_POWER_DOWN_DACL, 550 NAU8825_POWER_DOWN_DACR | NAU8825_POWER_DOWN_DACL); 551 } 552 553 static void nau8825_xtalk_clean_dac(struct nau8825 *nau8825) 554 { 555 /* Disable HP boost driver */ 556 regmap_update_bits(nau8825->regmap, NAU8825_REG_BOOST, 557 NAU8825_HP_BOOST_DIS, 0); 558 /* HP outputs shouted to ground */ 559 regmap_update_bits(nau8825->regmap, NAU8825_REG_HSD_CTRL, 560 NAU8825_SPKR_DWN1R | NAU8825_SPKR_DWN1L, 561 NAU8825_SPKR_DWN1R | NAU8825_SPKR_DWN1L); 562 /* Power down left and right DAC */ 563 if (nau8825->sw_id == NAU8825_SOFTWARE_ID_NAU8825) 564 regmap_update_bits(nau8825->regmap, NAU8825_REG_CHARGE_PUMP, 565 NAU8825_POWER_DOWN_DACR | NAU8825_POWER_DOWN_DACL, 566 NAU8825_POWER_DOWN_DACR | NAU8825_POWER_DOWN_DACL); 567 else 568 regmap_update_bits(nau8825->regmap, NAU8825_REG_CHARGE_PUMP, 569 NAU8825_POWER_DOWN_DACR | NAU8825_POWER_DOWN_DACL, 0); 570 571 /* Enable the TESTDAC and disable L/R HP impedance */ 572 regmap_update_bits(nau8825->regmap, NAU8825_REG_BIAS_ADJ, 573 NAU8825_BIAS_HPR_IMP | NAU8825_BIAS_HPL_IMP | 574 NAU8825_BIAS_TESTDAC_EN, NAU8825_BIAS_TESTDAC_EN); 575 /* Power down output driver with 2 stage */ 576 regmap_update_bits(nau8825->regmap, NAU8825_REG_POWER_UP_CONTROL, 577 NAU8825_POWERUP_HP_DRV_R | NAU8825_POWERUP_HP_DRV_L, 0); 578 regmap_update_bits(nau8825->regmap, NAU8825_REG_POWER_UP_CONTROL, 579 NAU8825_POWERUP_INTEGR_R | NAU8825_POWERUP_INTEGR_L | 580 NAU8825_POWERUP_DRV_IN_R | NAU8825_POWERUP_DRV_IN_L, 0); 581 /* Disable clock sync of DAC and DAC clock */ 582 regmap_update_bits(nau8825->regmap, NAU8825_REG_RDAC, 583 NAU8825_RDAC_EN | NAU8825_RDAC_CLK_EN, 0); 584 /* Disable charge pump ramp up function and change bump */ 585 regmap_update_bits(nau8825->regmap, NAU8825_REG_CHARGE_PUMP, 586 NAU8825_JAMNODCLOW | NAU8825_CHANRGE_PUMP_EN, 0); 587 /* Disable power of DAC path */ 588 regmap_update_bits(nau8825->regmap, NAU8825_REG_ENA_CTRL, 589 NAU8825_ENABLE_DACR | NAU8825_ENABLE_DACL | 590 NAU8825_ENABLE_ADC_CLK | NAU8825_ENABLE_DAC_CLK, 0); 591 if (!nau8825->irq) 592 regmap_update_bits(nau8825->regmap, 593 NAU8825_REG_ENA_CTRL, NAU8825_ENABLE_ADC, 0); 594 } 595 596 static void nau8825_xtalk_clean_adc(struct nau8825 *nau8825) 597 { 598 /* Power down left ADC and restore voltage to Vmid */ 599 regmap_update_bits(nau8825->regmap, NAU8825_REG_ANALOG_ADC_2, 600 NAU8825_POWERUP_ADCL | NAU8825_ADC_VREFSEL_MASK, 0); 601 } 602 603 static void nau8825_xtalk_clean(struct nau8825 *nau8825, bool cause_cancel) 604 { 605 /* Enable internal VCO needed for interruptions */ 606 nau8825_configure_sysclk(nau8825, NAU8825_CLK_INTERNAL, 0); 607 nau8825_xtalk_clean_dac(nau8825); 608 nau8825_xtalk_clean_adc(nau8825); 609 /* Clear cross talk parameters and disable */ 610 regmap_write(nau8825->regmap, NAU8825_REG_IMM_MODE_CTRL, 0); 611 /* RMS intrruption disable */ 612 regmap_update_bits(nau8825->regmap, NAU8825_REG_INTERRUPT_MASK, 613 NAU8825_IRQ_RMS_EN, NAU8825_IRQ_RMS_EN); 614 /* Recover default value for IIS */ 615 regmap_update_bits(nau8825->regmap, NAU8825_REG_I2S_PCM_CTRL2, 616 NAU8825_I2S_MS_MASK | NAU8825_I2S_LRC_DIV_MASK | 617 NAU8825_I2S_BLK_DIV_MASK, NAU8825_I2S_MS_SLAVE); 618 /* Restore value of specific register for cross talk */ 619 nau8825_xtalk_restore(nau8825, cause_cancel); 620 } 621 622 static void nau8825_xtalk_imm_start(struct nau8825 *nau8825, int vol) 623 { 624 /* Apply ADC volume for better cross talk performance */ 625 regmap_update_bits(nau8825->regmap, NAU8825_REG_ADC_DGAIN_CTRL, 626 NAU8825_ADC_DIG_VOL_MASK, vol); 627 /* Disables JKTIP(HPL) DAC channel for right to left measurement. 628 * Do it before sending signal in order to erase pop noise. 629 */ 630 regmap_update_bits(nau8825->regmap, NAU8825_REG_BIAS_ADJ, 631 NAU8825_BIAS_TESTDACR_EN | NAU8825_BIAS_TESTDACL_EN, 632 NAU8825_BIAS_TESTDACL_EN); 633 switch (nau8825->xtalk_state) { 634 case NAU8825_XTALK_HPR_R2L: 635 /* Enable right headphone impedance */ 636 regmap_update_bits(nau8825->regmap, NAU8825_REG_BIAS_ADJ, 637 NAU8825_BIAS_HPR_IMP | NAU8825_BIAS_HPL_IMP, 638 NAU8825_BIAS_HPR_IMP); 639 break; 640 case NAU8825_XTALK_HPL_R2L: 641 /* Enable left headphone impedance */ 642 regmap_update_bits(nau8825->regmap, NAU8825_REG_BIAS_ADJ, 643 NAU8825_BIAS_HPR_IMP | NAU8825_BIAS_HPL_IMP, 644 NAU8825_BIAS_HPL_IMP); 645 break; 646 default: 647 break; 648 } 649 msleep(100); 650 /* Impedance measurement mode enable */ 651 regmap_update_bits(nau8825->regmap, NAU8825_REG_IMM_MODE_CTRL, 652 NAU8825_IMM_EN, NAU8825_IMM_EN); 653 } 654 655 static void nau8825_xtalk_imm_stop(struct nau8825 *nau8825) 656 { 657 /* Impedance measurement mode disable */ 658 regmap_update_bits(nau8825->regmap, 659 NAU8825_REG_IMM_MODE_CTRL, NAU8825_IMM_EN, 0); 660 } 661 662 /* The cross talk measurement function can reduce cross talk across the 663 * JKTIP(HPL) and JKR1(HPR) outputs which measures the cross talk signal 664 * level to determine what cross talk reduction gain is. This system works by 665 * sending a 23Hz -24dBV sine wave into the headset output DAC and through 666 * the PGA. The output of the PGA is then connected to an internal current 667 * sense which measures the attenuated 23Hz signal and passing the output to 668 * an ADC which converts the measurement to a binary code. With two separated 669 * measurement, one for JKR1(HPR) and the other JKTIP(HPL), measurement data 670 * can be separated read in IMM_RMS_L for HSR and HSL after each measurement. 671 * Thus, the measurement function has four states to complete whole sequence. 672 * 1. Prepare state : Prepare the resource for detection and transfer to HPR 673 * IMM stat to make JKR1(HPR) impedance measure. 674 * 2. HPR IMM state : Read out orignal signal level of JKR1(HPR) and transfer 675 * to HPL IMM state to make JKTIP(HPL) impedance measure. 676 * 3. HPL IMM state : Read out cross talk signal level of JKTIP(HPL) and 677 * transfer to IMM state to determine suppression sidetone gain. 678 * 4. IMM state : Computes cross talk suppression sidetone gain with orignal 679 * and cross talk signal level. Apply this gain and then restore codec 680 * configuration. Then transfer to Done state for ending. 681 */ 682 static void nau8825_xtalk_measure(struct nau8825 *nau8825) 683 { 684 u32 sidetone; 685 686 switch (nau8825->xtalk_state) { 687 case NAU8825_XTALK_PREPARE: 688 /* In prepare state, set up clock, intrruption, DAC path, ADC 689 * path and cross talk detection parameters for preparation. 690 */ 691 nau8825_xtalk_prepare(nau8825); 692 msleep(280); 693 /* Trigger right headphone impedance detection */ 694 nau8825->xtalk_state = NAU8825_XTALK_HPR_R2L; 695 nau8825_xtalk_imm_start(nau8825, 0x00d2); 696 break; 697 case NAU8825_XTALK_HPR_R2L: 698 /* In right headphone IMM state, read out right headphone 699 * impedance measure result, and then start up left side. 700 */ 701 regmap_read(nau8825->regmap, NAU8825_REG_IMM_RMS_L, 702 &nau8825->imp_rms[NAU8825_XTALK_HPR_R2L]); 703 dev_dbg(nau8825->dev, "HPR_R2L imm: %x\n", 704 nau8825->imp_rms[NAU8825_XTALK_HPR_R2L]); 705 /* Disable then re-enable IMM mode to update */ 706 nau8825_xtalk_imm_stop(nau8825); 707 /* Trigger left headphone impedance detection */ 708 nau8825->xtalk_state = NAU8825_XTALK_HPL_R2L; 709 nau8825_xtalk_imm_start(nau8825, 0x00ff); 710 break; 711 case NAU8825_XTALK_HPL_R2L: 712 /* In left headphone IMM state, read out left headphone 713 * impedance measure result, and delay some time to wait 714 * detection sine wave output finish. Then, we can calculate 715 * the cross talk suppresstion side tone according to the L/R 716 * headphone imedance. 717 */ 718 regmap_read(nau8825->regmap, NAU8825_REG_IMM_RMS_L, 719 &nau8825->imp_rms[NAU8825_XTALK_HPL_R2L]); 720 dev_dbg(nau8825->dev, "HPL_R2L imm: %x\n", 721 nau8825->imp_rms[NAU8825_XTALK_HPL_R2L]); 722 nau8825_xtalk_imm_stop(nau8825); 723 msleep(150); 724 nau8825->xtalk_state = NAU8825_XTALK_IMM; 725 break; 726 case NAU8825_XTALK_IMM: 727 /* In impedance measure state, the orignal and cross talk 728 * signal level vlues are ready. The side tone gain is deter- 729 * mined with these signal level. After all, restore codec 730 * configuration. 731 */ 732 sidetone = nau8825_xtalk_sidetone( 733 nau8825->imp_rms[NAU8825_XTALK_HPR_R2L], 734 nau8825->imp_rms[NAU8825_XTALK_HPL_R2L]); 735 dev_dbg(nau8825->dev, "cross talk sidetone: %x\n", sidetone); 736 regmap_write(nau8825->regmap, NAU8825_REG_DAC_DGAIN_CTRL, 737 (sidetone << 8) | sidetone); 738 nau8825_xtalk_clean(nau8825, false); 739 nau8825->xtalk_state = NAU8825_XTALK_DONE; 740 break; 741 default: 742 break; 743 } 744 } 745 746 static void nau8825_xtalk_work(struct work_struct *work) 747 { 748 struct nau8825 *nau8825 = container_of( 749 work, struct nau8825, xtalk_work); 750 751 nau8825_xtalk_measure(nau8825); 752 /* To determine the cross talk side tone gain when reach 753 * the impedance measure state. 754 */ 755 if (nau8825->xtalk_state == NAU8825_XTALK_IMM) 756 nau8825_xtalk_measure(nau8825); 757 758 /* Delay jack report until cross talk detection process 759 * completed. It can avoid application to do playback 760 * preparation before cross talk detection is still working. 761 * Meanwhile, the protection of the cross talk detection 762 * is released. 763 */ 764 if (nau8825->xtalk_state == NAU8825_XTALK_DONE) { 765 snd_soc_jack_report(nau8825->jack, nau8825->xtalk_event, 766 nau8825->xtalk_event_mask); 767 nau8825_sema_release(nau8825); 768 nau8825->xtalk_protect = false; 769 } 770 } 771 772 static void nau8825_xtalk_cancel(struct nau8825 *nau8825) 773 { 774 /* If the crosstalk is eanbled and the process is on going, 775 * the driver forces to cancel the crosstalk task and 776 * restores the configuration to original status. 777 */ 778 if (nau8825->xtalk_enable && nau8825->xtalk_state != 779 NAU8825_XTALK_DONE) { 780 cancel_work_sync(&nau8825->xtalk_work); 781 nau8825_xtalk_clean(nau8825, true); 782 } 783 /* Reset parameters for cross talk suppression function */ 784 nau8825_sema_reset(nau8825); 785 nau8825->xtalk_state = NAU8825_XTALK_DONE; 786 nau8825->xtalk_protect = false; 787 } 788 789 static bool nau8825_readable_reg(struct device *dev, unsigned int reg) 790 { 791 switch (reg) { 792 case NAU8825_REG_ENA_CTRL ... NAU8825_REG_FLL_VCO_RSV: 793 case NAU8825_REG_HSD_CTRL ... NAU8825_REG_JACK_DET_CTRL: 794 case NAU8825_REG_INTERRUPT_MASK ... NAU8825_REG_KEYDET_CTRL: 795 case NAU8825_REG_VDET_THRESHOLD_1 ... NAU8825_REG_DACR_CTRL: 796 case NAU8825_REG_ADC_DRC_KNEE_IP12 ... NAU8825_REG_ADC_DRC_ATKDCY: 797 case NAU8825_REG_DAC_DRC_KNEE_IP12 ... NAU8825_REG_DAC_DRC_ATKDCY: 798 case NAU8825_REG_IMM_MODE_CTRL ... NAU8825_REG_IMM_RMS_R: 799 case NAU8825_REG_CLASSG_CTRL ... NAU8825_REG_OPT_EFUSE_CTRL: 800 case NAU8825_REG_MISC_CTRL: 801 case NAU8825_REG_I2C_DEVICE_ID ... NAU8825_REG_FLL2_UPPER: 802 case NAU8825_REG_BIAS_ADJ: 803 case NAU8825_REG_TRIM_SETTINGS ... NAU8825_REG_ANALOG_CONTROL_2: 804 case NAU8825_REG_ANALOG_ADC_1 ... NAU8825_REG_MIC_BIAS: 805 case NAU8825_REG_BOOST ... NAU8825_REG_FEPGA: 806 case NAU8825_REG_POWER_UP_CONTROL ... NAU8825_REG_GENERAL_STATUS: 807 return true; 808 default: 809 return false; 810 } 811 812 } 813 814 static bool nau8825_writeable_reg(struct device *dev, unsigned int reg) 815 { 816 switch (reg) { 817 case NAU8825_REG_RESET ... NAU8825_REG_FLL_VCO_RSV: 818 case NAU8825_REG_HSD_CTRL ... NAU8825_REG_JACK_DET_CTRL: 819 case NAU8825_REG_INTERRUPT_MASK: 820 case NAU8825_REG_INT_CLR_KEY_STATUS ... NAU8825_REG_KEYDET_CTRL: 821 case NAU8825_REG_VDET_THRESHOLD_1 ... NAU8825_REG_DACR_CTRL: 822 case NAU8825_REG_ADC_DRC_KNEE_IP12 ... NAU8825_REG_ADC_DRC_ATKDCY: 823 case NAU8825_REG_DAC_DRC_KNEE_IP12 ... NAU8825_REG_DAC_DRC_ATKDCY: 824 case NAU8825_REG_IMM_MODE_CTRL: 825 case NAU8825_REG_CLASSG_CTRL ... NAU8825_REG_OPT_EFUSE_CTRL: 826 case NAU8825_REG_MISC_CTRL: 827 case NAU8825_REG_FLL2_LOWER ... NAU8825_REG_FLL2_UPPER: 828 case NAU8825_REG_BIAS_ADJ: 829 case NAU8825_REG_TRIM_SETTINGS ... NAU8825_REG_ANALOG_CONTROL_2: 830 case NAU8825_REG_ANALOG_ADC_1 ... NAU8825_REG_MIC_BIAS: 831 case NAU8825_REG_BOOST ... NAU8825_REG_FEPGA: 832 case NAU8825_REG_POWER_UP_CONTROL ... NAU8825_REG_CHARGE_PUMP: 833 return true; 834 default: 835 return false; 836 } 837 } 838 839 static bool nau8825_volatile_reg(struct device *dev, unsigned int reg) 840 { 841 switch (reg) { 842 case NAU8825_REG_RESET: 843 case NAU8825_REG_IRQ_STATUS: 844 case NAU8825_REG_INT_CLR_KEY_STATUS: 845 case NAU8825_REG_IMM_RMS_L: 846 case NAU8825_REG_IMM_RMS_R: 847 case NAU8825_REG_I2C_DEVICE_ID: 848 case NAU8825_REG_SARDOUT_RAM_STATUS: 849 case NAU8825_REG_CHARGE_PUMP_INPUT_READ: 850 case NAU8825_REG_GENERAL_STATUS: 851 case NAU8825_REG_BIQ_CTRL ... NAU8825_REG_BIQ_COF10: 852 return true; 853 default: 854 return false; 855 } 856 } 857 858 static int nau8825_fepga_event(struct snd_soc_dapm_widget *w, 859 struct snd_kcontrol *kcontrol, int event) 860 { 861 struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm); 862 struct nau8825 *nau8825 = snd_soc_component_get_drvdata(component); 863 864 switch (event) { 865 case SND_SOC_DAPM_POST_PMU: 866 regmap_update_bits(nau8825->regmap, NAU8825_REG_FEPGA, 867 NAU8825_ACDC_CTRL_MASK, 868 NAU8825_ACDC_VREF_MICP | NAU8825_ACDC_VREF_MICN); 869 regmap_update_bits(nau8825->regmap, NAU8825_REG_BOOST, 870 NAU8825_DISCHRG_EN, NAU8825_DISCHRG_EN); 871 msleep(40); 872 regmap_update_bits(nau8825->regmap, NAU8825_REG_BOOST, 873 NAU8825_DISCHRG_EN, 0); 874 regmap_update_bits(nau8825->regmap, NAU8825_REG_FEPGA, 875 NAU8825_ACDC_CTRL_MASK, 0); 876 break; 877 default: 878 break; 879 } 880 881 return 0; 882 } 883 884 static int nau8825_adc_event(struct snd_soc_dapm_widget *w, 885 struct snd_kcontrol *kcontrol, int event) 886 { 887 struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm); 888 struct nau8825 *nau8825 = snd_soc_component_get_drvdata(component); 889 890 switch (event) { 891 case SND_SOC_DAPM_POST_PMU: 892 msleep(nau8825->adc_delay); 893 regmap_update_bits(nau8825->regmap, NAU8825_REG_ENA_CTRL, 894 NAU8825_ENABLE_ADC, NAU8825_ENABLE_ADC); 895 break; 896 case SND_SOC_DAPM_POST_PMD: 897 if (!nau8825->irq) 898 regmap_update_bits(nau8825->regmap, 899 NAU8825_REG_ENA_CTRL, NAU8825_ENABLE_ADC, 0); 900 break; 901 default: 902 return -EINVAL; 903 } 904 905 return 0; 906 } 907 908 static int nau8825_pump_event(struct snd_soc_dapm_widget *w, 909 struct snd_kcontrol *kcontrol, int event) 910 { 911 struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm); 912 struct nau8825 *nau8825 = snd_soc_component_get_drvdata(component); 913 914 switch (event) { 915 case SND_SOC_DAPM_POST_PMU: 916 /* Prevent startup click by letting charge pump to ramp up */ 917 msleep(10); 918 regmap_update_bits(nau8825->regmap, NAU8825_REG_CHARGE_PUMP, 919 NAU8825_JAMNODCLOW, NAU8825_JAMNODCLOW); 920 break; 921 case SND_SOC_DAPM_PRE_PMD: 922 regmap_update_bits(nau8825->regmap, NAU8825_REG_CHARGE_PUMP, 923 NAU8825_JAMNODCLOW, 0); 924 break; 925 default: 926 return -EINVAL; 927 } 928 929 return 0; 930 } 931 932 static int nau8825_output_dac_event(struct snd_soc_dapm_widget *w, 933 struct snd_kcontrol *kcontrol, int event) 934 { 935 struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm); 936 struct nau8825 *nau8825 = snd_soc_component_get_drvdata(component); 937 938 switch (event) { 939 case SND_SOC_DAPM_PRE_PMU: 940 /* Disables the TESTDAC to let DAC signal pass through. */ 941 regmap_update_bits(nau8825->regmap, NAU8825_REG_BIAS_ADJ, 942 NAU8825_BIAS_TESTDAC_EN, 0); 943 if (nau8825->sw_id == NAU8825_SOFTWARE_ID_NAU8825) 944 regmap_update_bits(nau8825->regmap, NAU8825_REG_CHARGE_PUMP, 945 NAU8825_POWER_DOWN_DACR | NAU8825_POWER_DOWN_DACL, 0); 946 else 947 regmap_update_bits(nau8825->regmap, NAU8825_REG_CHARGE_PUMP, 948 NAU8825_POWER_DOWN_DACR | NAU8825_POWER_DOWN_DACL, 949 NAU8825_POWER_DOWN_DACR | NAU8825_POWER_DOWN_DACL); 950 break; 951 case SND_SOC_DAPM_POST_PMD: 952 regmap_update_bits(nau8825->regmap, NAU8825_REG_BIAS_ADJ, 953 NAU8825_BIAS_TESTDAC_EN, NAU8825_BIAS_TESTDAC_EN); 954 if (nau8825->sw_id == NAU8825_SOFTWARE_ID_NAU8825) 955 regmap_update_bits(nau8825->regmap, NAU8825_REG_CHARGE_PUMP, 956 NAU8825_POWER_DOWN_DACR | NAU8825_POWER_DOWN_DACL, 957 NAU8825_POWER_DOWN_DACR | NAU8825_POWER_DOWN_DACL); 958 else 959 regmap_update_bits(nau8825->regmap, NAU8825_REG_CHARGE_PUMP, 960 NAU8825_POWER_DOWN_DACR | NAU8825_POWER_DOWN_DACL, 0); 961 962 break; 963 default: 964 return -EINVAL; 965 } 966 967 return 0; 968 } 969 970 static int system_clock_control(struct snd_soc_dapm_widget *w, 971 struct snd_kcontrol *k, int event) 972 { 973 struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm); 974 struct nau8825 *nau8825 = snd_soc_component_get_drvdata(component); 975 struct regmap *regmap = nau8825->regmap; 976 977 if (SND_SOC_DAPM_EVENT_OFF(event)) { 978 dev_dbg(nau8825->dev, "system clock control : POWER OFF\n"); 979 /* Set clock source to disable or internal clock before the 980 * playback or capture end. Codec needs clock for Jack 981 * detection and button press if jack inserted; otherwise, 982 * the clock should be closed. 983 */ 984 if (nau8825_is_jack_inserted(regmap)) { 985 nau8825_configure_sysclk(nau8825, 986 NAU8825_CLK_INTERNAL, 0); 987 } else { 988 nau8825_configure_sysclk(nau8825, NAU8825_CLK_DIS, 0); 989 } 990 } 991 992 return 0; 993 } 994 995 static int nau8825_biq_coeff_get(struct snd_kcontrol *kcontrol, 996 struct snd_ctl_elem_value *ucontrol) 997 { 998 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol); 999 struct soc_bytes_ext *params = (void *)kcontrol->private_value; 1000 1001 if (!component->regmap) 1002 return -EINVAL; 1003 1004 regmap_raw_read(component->regmap, NAU8825_REG_BIQ_COF1, 1005 ucontrol->value.bytes.data, params->max); 1006 return 0; 1007 } 1008 1009 static int nau8825_biq_coeff_put(struct snd_kcontrol *kcontrol, 1010 struct snd_ctl_elem_value *ucontrol) 1011 { 1012 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol); 1013 struct soc_bytes_ext *params = (void *)kcontrol->private_value; 1014 void *data; 1015 1016 if (!component->regmap) 1017 return -EINVAL; 1018 1019 data = kmemdup(ucontrol->value.bytes.data, 1020 params->max, GFP_KERNEL | GFP_DMA); 1021 if (!data) 1022 return -ENOMEM; 1023 1024 regmap_update_bits(component->regmap, NAU8825_REG_BIQ_CTRL, 1025 NAU8825_BIQ_WRT_EN, 0); 1026 regmap_raw_write(component->regmap, NAU8825_REG_BIQ_COF1, 1027 data, params->max); 1028 regmap_update_bits(component->regmap, NAU8825_REG_BIQ_CTRL, 1029 NAU8825_BIQ_WRT_EN, NAU8825_BIQ_WRT_EN); 1030 1031 kfree(data); 1032 return 0; 1033 } 1034 1035 static const char * const nau8825_biq_path[] = { 1036 "ADC", "DAC" 1037 }; 1038 1039 static const struct soc_enum nau8825_biq_path_enum = 1040 SOC_ENUM_SINGLE(NAU8825_REG_BIQ_CTRL, NAU8825_BIQ_PATH_SFT, 1041 ARRAY_SIZE(nau8825_biq_path), nau8825_biq_path); 1042 1043 static const char * const nau8825_adc_decimation[] = { 1044 "32", "64", "128", "256" 1045 }; 1046 1047 static const struct soc_enum nau8825_adc_decimation_enum = 1048 SOC_ENUM_SINGLE(NAU8825_REG_ADC_RATE, NAU8825_ADC_SYNC_DOWN_SFT, 1049 ARRAY_SIZE(nau8825_adc_decimation), nau8825_adc_decimation); 1050 1051 static const char * const nau8825_dac_oversampl[] = { 1052 "64", "256", "128", "", "32" 1053 }; 1054 1055 static const struct soc_enum nau8825_dac_oversampl_enum = 1056 SOC_ENUM_SINGLE(NAU8825_REG_DAC_CTRL1, NAU8825_DAC_OVERSAMPLE_SFT, 1057 ARRAY_SIZE(nau8825_dac_oversampl), nau8825_dac_oversampl); 1058 1059 static const DECLARE_TLV_DB_MINMAX_MUTE(adc_vol_tlv, -10300, 2400); 1060 static const DECLARE_TLV_DB_MINMAX_MUTE(sidetone_vol_tlv, -4200, 0); 1061 static const DECLARE_TLV_DB_MINMAX(dac_vol_tlv, -5400, 0); 1062 static const DECLARE_TLV_DB_MINMAX(fepga_gain_tlv, -100, 3600); 1063 static const DECLARE_TLV_DB_MINMAX_MUTE(crosstalk_vol_tlv, -9600, 2400); 1064 1065 static const struct snd_kcontrol_new nau8825_controls[] = { 1066 SOC_SINGLE_TLV("Mic Volume", NAU8825_REG_ADC_DGAIN_CTRL, 1067 0, 0xff, 0, adc_vol_tlv), 1068 SOC_DOUBLE_TLV("Headphone Bypass Volume", NAU8825_REG_ADC_DGAIN_CTRL, 1069 12, 8, 0x0f, 0, sidetone_vol_tlv), 1070 SOC_DOUBLE_TLV("Headphone Volume", NAU8825_REG_HSVOL_CTRL, 1071 6, 0, 0x3f, 1, dac_vol_tlv), 1072 SOC_SINGLE_TLV("Frontend PGA Volume", NAU8825_REG_POWER_UP_CONTROL, 1073 8, 37, 0, fepga_gain_tlv), 1074 SOC_DOUBLE_TLV("Headphone Crosstalk Volume", NAU8825_REG_DAC_DGAIN_CTRL, 1075 0, 8, 0xff, 0, crosstalk_vol_tlv), 1076 1077 SOC_ENUM("ADC Decimation Rate", nau8825_adc_decimation_enum), 1078 SOC_ENUM("DAC Oversampling Rate", nau8825_dac_oversampl_enum), 1079 /* programmable biquad filter */ 1080 SOC_ENUM("BIQ Path Select", nau8825_biq_path_enum), 1081 SND_SOC_BYTES_EXT("BIQ Coefficients", 20, 1082 nau8825_biq_coeff_get, nau8825_biq_coeff_put), 1083 }; 1084 1085 /* DAC Mux 0x33[9] and 0x34[9] */ 1086 static const char * const nau8825_dac_src[] = { 1087 "DACL", "DACR", 1088 }; 1089 1090 static SOC_ENUM_SINGLE_DECL( 1091 nau8825_dacl_enum, NAU8825_REG_DACL_CTRL, 1092 NAU8825_DACL_CH_SEL_SFT, nau8825_dac_src); 1093 1094 static SOC_ENUM_SINGLE_DECL( 1095 nau8825_dacr_enum, NAU8825_REG_DACR_CTRL, 1096 NAU8825_DACR_CH_SEL_SFT, nau8825_dac_src); 1097 1098 static const struct snd_kcontrol_new nau8825_dacl_mux = 1099 SOC_DAPM_ENUM("DACL Source", nau8825_dacl_enum); 1100 1101 static const struct snd_kcontrol_new nau8825_dacr_mux = 1102 SOC_DAPM_ENUM("DACR Source", nau8825_dacr_enum); 1103 1104 1105 static const struct snd_soc_dapm_widget nau8825_dapm_widgets[] = { 1106 SND_SOC_DAPM_AIF_OUT("AIFTX", "Capture", 0, NAU8825_REG_I2S_PCM_CTRL2, 1107 15, 1), 1108 SND_SOC_DAPM_AIF_IN("AIFRX", "Playback", 0, SND_SOC_NOPM, 0, 0), 1109 SND_SOC_DAPM_SUPPLY("System Clock", SND_SOC_NOPM, 0, 0, 1110 system_clock_control, SND_SOC_DAPM_POST_PMD), 1111 1112 SND_SOC_DAPM_INPUT("MIC"), 1113 SND_SOC_DAPM_MICBIAS("MICBIAS", NAU8825_REG_MIC_BIAS, 8, 0), 1114 1115 SND_SOC_DAPM_PGA_E("Frontend PGA", NAU8825_REG_POWER_UP_CONTROL, 14, 0, 1116 NULL, 0, nau8825_fepga_event, SND_SOC_DAPM_POST_PMU), 1117 1118 SND_SOC_DAPM_ADC_E("ADC", NULL, SND_SOC_NOPM, 0, 0, 1119 nau8825_adc_event, SND_SOC_DAPM_POST_PMU | 1120 SND_SOC_DAPM_POST_PMD), 1121 SND_SOC_DAPM_SUPPLY("ADC Clock", NAU8825_REG_ENA_CTRL, 7, 0, NULL, 0), 1122 SND_SOC_DAPM_SUPPLY("ADC Power", NAU8825_REG_ANALOG_ADC_2, 6, 0, NULL, 1123 0), 1124 1125 /* ADC for button press detection. A dapm supply widget is used to 1126 * prevent dapm_power_widgets keeping the codec at SND_SOC_BIAS_ON 1127 * during suspend. 1128 */ 1129 SND_SOC_DAPM_SUPPLY("SAR", NAU8825_REG_SAR_CTRL, 1130 NAU8825_SAR_ADC_EN_SFT, 0, NULL, 0), 1131 1132 SND_SOC_DAPM_PGA_S("ADACL", 2, NAU8825_REG_RDAC, 12, 0, NULL, 0), 1133 SND_SOC_DAPM_PGA_S("ADACR", 2, NAU8825_REG_RDAC, 13, 0, NULL, 0), 1134 SND_SOC_DAPM_PGA_S("ADACL Clock", 3, NAU8825_REG_RDAC, 8, 0, NULL, 0), 1135 SND_SOC_DAPM_PGA_S("ADACR Clock", 3, NAU8825_REG_RDAC, 9, 0, NULL, 0), 1136 1137 SND_SOC_DAPM_DAC("DDACR", NULL, NAU8825_REG_ENA_CTRL, 1138 NAU8825_ENABLE_DACR_SFT, 0), 1139 SND_SOC_DAPM_DAC("DDACL", NULL, NAU8825_REG_ENA_CTRL, 1140 NAU8825_ENABLE_DACL_SFT, 0), 1141 SND_SOC_DAPM_SUPPLY("DDAC Clock", NAU8825_REG_ENA_CTRL, 6, 0, NULL, 0), 1142 1143 SND_SOC_DAPM_MUX("DACL Mux", SND_SOC_NOPM, 0, 0, &nau8825_dacl_mux), 1144 SND_SOC_DAPM_MUX("DACR Mux", SND_SOC_NOPM, 0, 0, &nau8825_dacr_mux), 1145 1146 SND_SOC_DAPM_PGA_S("HP amp L", 0, 1147 NAU8825_REG_CLASSG_CTRL, 1, 0, NULL, 0), 1148 SND_SOC_DAPM_PGA_S("HP amp R", 0, 1149 NAU8825_REG_CLASSG_CTRL, 2, 0, NULL, 0), 1150 1151 SND_SOC_DAPM_PGA_S("Charge Pump", 1, NAU8825_REG_CHARGE_PUMP, 5, 0, 1152 nau8825_pump_event, SND_SOC_DAPM_POST_PMU | 1153 SND_SOC_DAPM_PRE_PMD), 1154 1155 SND_SOC_DAPM_PGA_S("Output Driver R Stage 1", 4, 1156 NAU8825_REG_POWER_UP_CONTROL, 5, 0, NULL, 0), 1157 SND_SOC_DAPM_PGA_S("Output Driver L Stage 1", 4, 1158 NAU8825_REG_POWER_UP_CONTROL, 4, 0, NULL, 0), 1159 SND_SOC_DAPM_PGA_S("Output Driver R Stage 2", 5, 1160 NAU8825_REG_POWER_UP_CONTROL, 3, 0, NULL, 0), 1161 SND_SOC_DAPM_PGA_S("Output Driver L Stage 2", 5, 1162 NAU8825_REG_POWER_UP_CONTROL, 2, 0, NULL, 0), 1163 SND_SOC_DAPM_PGA_S("Output Driver R Stage 3", 6, 1164 NAU8825_REG_POWER_UP_CONTROL, 1, 0, NULL, 0), 1165 SND_SOC_DAPM_PGA_S("Output Driver L Stage 3", 6, 1166 NAU8825_REG_POWER_UP_CONTROL, 0, 0, NULL, 0), 1167 1168 SND_SOC_DAPM_PGA_S("Output DACL", 7, 1169 SND_SOC_NOPM, 0, 0, nau8825_output_dac_event, 1170 SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD), 1171 SND_SOC_DAPM_PGA_S("Output DACR", 7, 1172 SND_SOC_NOPM, 0, 0, nau8825_output_dac_event, 1173 SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD), 1174 1175 1176 /* HPOL/R are ungrounded by disabling 16 Ohm pull-downs on playback */ 1177 SND_SOC_DAPM_PGA_S("HPOL Pulldown", 8, 1178 NAU8825_REG_HSD_CTRL, 0, 1, NULL, 0), 1179 SND_SOC_DAPM_PGA_S("HPOR Pulldown", 8, 1180 NAU8825_REG_HSD_CTRL, 1, 1, NULL, 0), 1181 1182 /* High current HPOL/R boost driver */ 1183 SND_SOC_DAPM_PGA_S("HP Boost Driver", 9, 1184 NAU8825_REG_BOOST, 9, 1, NULL, 0), 1185 1186 /* Class G operation control*/ 1187 SND_SOC_DAPM_PGA_S("Class G", 10, 1188 NAU8825_REG_CLASSG_CTRL, 0, 0, NULL, 0), 1189 1190 SND_SOC_DAPM_OUTPUT("HPOL"), 1191 SND_SOC_DAPM_OUTPUT("HPOR"), 1192 }; 1193 1194 static const struct snd_soc_dapm_route nau8825_dapm_routes[] = { 1195 {"Frontend PGA", NULL, "MIC"}, 1196 {"ADC", NULL, "Frontend PGA"}, 1197 {"ADC", NULL, "ADC Clock"}, 1198 {"ADC", NULL, "ADC Power"}, 1199 {"AIFTX", NULL, "ADC"}, 1200 {"AIFTX", NULL, "System Clock"}, 1201 1202 {"AIFRX", NULL, "System Clock"}, 1203 {"DDACL", NULL, "AIFRX"}, 1204 {"DDACR", NULL, "AIFRX"}, 1205 {"DDACL", NULL, "DDAC Clock"}, 1206 {"DDACR", NULL, "DDAC Clock"}, 1207 {"DACL Mux", "DACL", "DDACL"}, 1208 {"DACL Mux", "DACR", "DDACR"}, 1209 {"DACR Mux", "DACL", "DDACL"}, 1210 {"DACR Mux", "DACR", "DDACR"}, 1211 {"HP amp L", NULL, "DACL Mux"}, 1212 {"HP amp R", NULL, "DACR Mux"}, 1213 {"Charge Pump", NULL, "HP amp L"}, 1214 {"Charge Pump", NULL, "HP amp R"}, 1215 {"ADACL", NULL, "Charge Pump"}, 1216 {"ADACR", NULL, "Charge Pump"}, 1217 {"ADACL Clock", NULL, "ADACL"}, 1218 {"ADACR Clock", NULL, "ADACR"}, 1219 {"Output Driver L Stage 1", NULL, "ADACL Clock"}, 1220 {"Output Driver R Stage 1", NULL, "ADACR Clock"}, 1221 {"Output Driver L Stage 2", NULL, "Output Driver L Stage 1"}, 1222 {"Output Driver R Stage 2", NULL, "Output Driver R Stage 1"}, 1223 {"Output Driver L Stage 3", NULL, "Output Driver L Stage 2"}, 1224 {"Output Driver R Stage 3", NULL, "Output Driver R Stage 2"}, 1225 {"Output DACL", NULL, "Output Driver L Stage 3"}, 1226 {"Output DACR", NULL, "Output Driver R Stage 3"}, 1227 {"HPOL Pulldown", NULL, "Output DACL"}, 1228 {"HPOR Pulldown", NULL, "Output DACR"}, 1229 {"HP Boost Driver", NULL, "HPOL Pulldown"}, 1230 {"HP Boost Driver", NULL, "HPOR Pulldown"}, 1231 {"Class G", NULL, "HP Boost Driver"}, 1232 {"HPOL", NULL, "Class G"}, 1233 {"HPOR", NULL, "Class G"}, 1234 }; 1235 1236 static const struct nau8825_osr_attr * 1237 nau8825_get_osr(struct nau8825 *nau8825, int stream) 1238 { 1239 unsigned int osr; 1240 1241 if (stream == SNDRV_PCM_STREAM_PLAYBACK) { 1242 regmap_read(nau8825->regmap, 1243 NAU8825_REG_DAC_CTRL1, &osr); 1244 osr &= NAU8825_DAC_OVERSAMPLE_MASK; 1245 if (osr >= ARRAY_SIZE(osr_dac_sel)) 1246 return NULL; 1247 return &osr_dac_sel[osr]; 1248 } else { 1249 regmap_read(nau8825->regmap, 1250 NAU8825_REG_ADC_RATE, &osr); 1251 osr &= NAU8825_ADC_SYNC_DOWN_MASK; 1252 if (osr >= ARRAY_SIZE(osr_adc_sel)) 1253 return NULL; 1254 return &osr_adc_sel[osr]; 1255 } 1256 } 1257 1258 static int nau8825_dai_startup(struct snd_pcm_substream *substream, 1259 struct snd_soc_dai *dai) 1260 { 1261 struct snd_soc_component *component = dai->component; 1262 struct nau8825 *nau8825 = snd_soc_component_get_drvdata(component); 1263 const struct nau8825_osr_attr *osr; 1264 1265 osr = nau8825_get_osr(nau8825, substream->stream); 1266 if (!osr || !osr->osr) 1267 return -EINVAL; 1268 1269 return snd_pcm_hw_constraint_minmax(substream->runtime, 1270 SNDRV_PCM_HW_PARAM_RATE, 1271 0, CLK_DA_AD_MAX / osr->osr); 1272 } 1273 1274 static int nau8825_hw_params(struct snd_pcm_substream *substream, 1275 struct snd_pcm_hw_params *params, 1276 struct snd_soc_dai *dai) 1277 { 1278 struct snd_soc_component *component = dai->component; 1279 struct nau8825 *nau8825 = snd_soc_component_get_drvdata(component); 1280 unsigned int val_len = 0, ctrl_val, bclk_fs, bclk_div; 1281 const struct nau8825_osr_attr *osr; 1282 int err = -EINVAL; 1283 1284 nau8825_sema_acquire(nau8825, 3 * HZ); 1285 1286 /* CLK_DAC or CLK_ADC = OSR * FS 1287 * DAC or ADC clock frequency is defined as Over Sampling Rate (OSR) 1288 * multiplied by the audio sample rate (Fs). Note that the OSR and Fs 1289 * values must be selected such that the maximum frequency is less 1290 * than 6.144 MHz. 1291 */ 1292 osr = nau8825_get_osr(nau8825, substream->stream); 1293 if (!osr || !osr->osr) 1294 goto error; 1295 if (params_rate(params) * osr->osr > CLK_DA_AD_MAX) 1296 goto error; 1297 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) 1298 regmap_update_bits(nau8825->regmap, NAU8825_REG_CLK_DIVIDER, 1299 NAU8825_CLK_DAC_SRC_MASK, 1300 osr->clk_src << NAU8825_CLK_DAC_SRC_SFT); 1301 else 1302 regmap_update_bits(nau8825->regmap, NAU8825_REG_CLK_DIVIDER, 1303 NAU8825_CLK_ADC_SRC_MASK, 1304 osr->clk_src << NAU8825_CLK_ADC_SRC_SFT); 1305 1306 /* make BCLK and LRC divde configuration if the codec as master. */ 1307 regmap_read(nau8825->regmap, NAU8825_REG_I2S_PCM_CTRL2, &ctrl_val); 1308 if (ctrl_val & NAU8825_I2S_MS_MASTER) { 1309 /* get the bclk and fs ratio */ 1310 bclk_fs = snd_soc_params_to_bclk(params) / params_rate(params); 1311 if (bclk_fs <= 32) 1312 bclk_div = 2; 1313 else if (bclk_fs <= 64) 1314 bclk_div = 1; 1315 else if (bclk_fs <= 128) 1316 bclk_div = 0; 1317 else 1318 goto error; 1319 regmap_update_bits(nau8825->regmap, NAU8825_REG_I2S_PCM_CTRL2, 1320 NAU8825_I2S_LRC_DIV_MASK | NAU8825_I2S_BLK_DIV_MASK, 1321 ((bclk_div + 1) << NAU8825_I2S_LRC_DIV_SFT) | bclk_div); 1322 } 1323 1324 switch (params_width(params)) { 1325 case 16: 1326 val_len |= NAU8825_I2S_DL_16; 1327 break; 1328 case 20: 1329 val_len |= NAU8825_I2S_DL_20; 1330 break; 1331 case 24: 1332 val_len |= NAU8825_I2S_DL_24; 1333 break; 1334 case 32: 1335 val_len |= NAU8825_I2S_DL_32; 1336 break; 1337 default: 1338 goto error; 1339 } 1340 1341 regmap_update_bits(nau8825->regmap, NAU8825_REG_I2S_PCM_CTRL1, 1342 NAU8825_I2S_DL_MASK, val_len); 1343 err = 0; 1344 1345 error: 1346 /* Release the semaphore. */ 1347 nau8825_sema_release(nau8825); 1348 1349 return err; 1350 } 1351 1352 static int nau8825_set_dai_fmt(struct snd_soc_dai *codec_dai, unsigned int fmt) 1353 { 1354 struct snd_soc_component *component = codec_dai->component; 1355 struct nau8825 *nau8825 = snd_soc_component_get_drvdata(component); 1356 unsigned int ctrl1_val = 0, ctrl2_val = 0; 1357 1358 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { 1359 case SND_SOC_DAIFMT_CBM_CFM: 1360 ctrl2_val |= NAU8825_I2S_MS_MASTER; 1361 break; 1362 case SND_SOC_DAIFMT_CBS_CFS: 1363 break; 1364 default: 1365 return -EINVAL; 1366 } 1367 1368 switch (fmt & SND_SOC_DAIFMT_INV_MASK) { 1369 case SND_SOC_DAIFMT_NB_NF: 1370 break; 1371 case SND_SOC_DAIFMT_IB_NF: 1372 ctrl1_val |= NAU8825_I2S_BP_INV; 1373 break; 1374 default: 1375 return -EINVAL; 1376 } 1377 1378 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { 1379 case SND_SOC_DAIFMT_I2S: 1380 ctrl1_val |= NAU8825_I2S_DF_I2S; 1381 break; 1382 case SND_SOC_DAIFMT_LEFT_J: 1383 ctrl1_val |= NAU8825_I2S_DF_LEFT; 1384 break; 1385 case SND_SOC_DAIFMT_RIGHT_J: 1386 ctrl1_val |= NAU8825_I2S_DF_RIGTH; 1387 break; 1388 case SND_SOC_DAIFMT_DSP_A: 1389 ctrl1_val |= NAU8825_I2S_DF_PCM_AB; 1390 break; 1391 case SND_SOC_DAIFMT_DSP_B: 1392 ctrl1_val |= NAU8825_I2S_DF_PCM_AB; 1393 ctrl1_val |= NAU8825_I2S_PCMB_EN; 1394 break; 1395 default: 1396 return -EINVAL; 1397 } 1398 1399 nau8825_sema_acquire(nau8825, 3 * HZ); 1400 1401 regmap_update_bits(nau8825->regmap, NAU8825_REG_I2S_PCM_CTRL1, 1402 NAU8825_I2S_DL_MASK | NAU8825_I2S_DF_MASK | 1403 NAU8825_I2S_BP_MASK | NAU8825_I2S_PCMB_MASK, 1404 ctrl1_val); 1405 regmap_update_bits(nau8825->regmap, NAU8825_REG_I2S_PCM_CTRL2, 1406 NAU8825_I2S_MS_MASK, ctrl2_val); 1407 1408 /* Release the semaphore. */ 1409 nau8825_sema_release(nau8825); 1410 1411 return 0; 1412 } 1413 1414 /** 1415 * nau8825_set_tdm_slot - configure DAI TDM. 1416 * @dai: DAI 1417 * @tx_mask: bitmask representing active TX slots. 1418 * @rx_mask: bitmask representing active RX slots. 1419 * @slots: Number of slots in use. 1420 * @slot_width: Width in bits for each slot. 1421 * 1422 * Configures a DAI for TDM operation. Support TDM 4/8 slots. 1423 * The limitation is DAC and ADC need shift 4 slots at 8 slots mode. 1424 */ 1425 static int nau8825_set_tdm_slot(struct snd_soc_dai *dai, unsigned int tx_mask, 1426 unsigned int rx_mask, int slots, int slot_width) 1427 { 1428 struct snd_soc_component *component = dai->component; 1429 struct nau8825 *nau8825 = snd_soc_component_get_drvdata(component); 1430 unsigned int ctrl_val = 0, ctrl_offset = 0, value = 0, dac_s, adc_s; 1431 1432 if (slots != 4 && slots != 8) { 1433 dev_err(nau8825->dev, "Only support 4 or 8 slots!\n"); 1434 return -EINVAL; 1435 } 1436 1437 /* The driver is limited to 1-channel for ADC, and 2-channel for DAC on TDM mode */ 1438 if (hweight_long((unsigned long) tx_mask) != 1 || 1439 hweight_long((unsigned long) rx_mask) != 2) { 1440 dev_err(nau8825->dev, 1441 "The limitation is 1-channel for ADC, and 2-channel for DAC on TDM mode.\n"); 1442 return -EINVAL; 1443 } 1444 1445 if (((tx_mask & 0xf) && (tx_mask & 0xf0)) || 1446 ((rx_mask & 0xf) && (rx_mask & 0xf0)) || 1447 ((tx_mask & 0xf) && (rx_mask & 0xf0)) || 1448 ((rx_mask & 0xf) && (tx_mask & 0xf0))) { 1449 dev_err(nau8825->dev, 1450 "Slot assignment of DAC and ADC need to set same interval.\n"); 1451 return -EINVAL; 1452 } 1453 1454 /* The offset of fixed 4 slots for 8 slots support */ 1455 if (rx_mask & 0xf0) { 1456 regmap_update_bits(nau8825->regmap, NAU8825_REG_I2S_PCM_CTRL2, 1457 NAU8825_I2S_PCM_TS_EN_MASK, NAU8825_I2S_PCM_TS_EN); 1458 regmap_read(nau8825->regmap, NAU8825_REG_I2S_PCM_CTRL1, &value); 1459 ctrl_val |= NAU8825_TDM_OFFSET_EN; 1460 ctrl_offset = 4 * slot_width; 1461 if (!(value & NAU8825_I2S_PCMB_MASK)) 1462 ctrl_offset += 1; 1463 dac_s = (rx_mask & 0xf0) >> 4; 1464 adc_s = fls((tx_mask & 0xf0) >> 4); 1465 } else { 1466 dac_s = rx_mask & 0xf; 1467 adc_s = fls(tx_mask & 0xf); 1468 } 1469 1470 ctrl_val |= NAU8825_TDM_MODE; 1471 1472 switch (dac_s) { 1473 case 0x3: 1474 ctrl_val |= 1 << NAU8825_TDM_DACR_RX_SFT; 1475 break; 1476 case 0x5: 1477 ctrl_val |= 2 << NAU8825_TDM_DACR_RX_SFT; 1478 break; 1479 case 0x6: 1480 ctrl_val |= 1 << NAU8825_TDM_DACL_RX_SFT; 1481 ctrl_val |= 2 << NAU8825_TDM_DACR_RX_SFT; 1482 break; 1483 case 0x9: 1484 ctrl_val |= 3 << NAU8825_TDM_DACR_RX_SFT; 1485 break; 1486 case 0xa: 1487 ctrl_val |= 1 << NAU8825_TDM_DACL_RX_SFT; 1488 ctrl_val |= 3 << NAU8825_TDM_DACR_RX_SFT; 1489 break; 1490 case 0xc: 1491 ctrl_val |= 2 << NAU8825_TDM_DACL_RX_SFT; 1492 ctrl_val |= 3 << NAU8825_TDM_DACR_RX_SFT; 1493 break; 1494 default: 1495 return -EINVAL; 1496 } 1497 1498 ctrl_val |= adc_s - 1; 1499 1500 regmap_update_bits(nau8825->regmap, NAU8825_REG_TDM_CTRL, 1501 NAU8825_TDM_MODE | NAU8825_TDM_OFFSET_EN | 1502 NAU8825_TDM_DACL_RX_MASK | NAU8825_TDM_DACR_RX_MASK | 1503 NAU8825_TDM_TX_MASK, ctrl_val); 1504 regmap_update_bits(nau8825->regmap, NAU8825_REG_LEFT_TIME_SLOT, 1505 NAU8825_TSLOT_L0_MASK, ctrl_offset); 1506 1507 return 0; 1508 } 1509 1510 static const struct snd_soc_dai_ops nau8825_dai_ops = { 1511 .startup = nau8825_dai_startup, 1512 .hw_params = nau8825_hw_params, 1513 .set_fmt = nau8825_set_dai_fmt, 1514 .set_tdm_slot = nau8825_set_tdm_slot, 1515 }; 1516 1517 #define NAU8825_RATES SNDRV_PCM_RATE_8000_192000 1518 #define NAU8825_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE \ 1519 | SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S32_LE) 1520 1521 static struct snd_soc_dai_driver nau8825_dai = { 1522 .name = "nau8825-hifi", 1523 .playback = { 1524 .stream_name = "Playback", 1525 .channels_min = 1, 1526 .channels_max = 2, 1527 .rates = NAU8825_RATES, 1528 .formats = NAU8825_FORMATS, 1529 }, 1530 .capture = { 1531 .stream_name = "Capture", 1532 .channels_min = 1, 1533 .channels_max = 2, /* Only 1 channel of data */ 1534 .rates = NAU8825_RATES, 1535 .formats = NAU8825_FORMATS, 1536 }, 1537 .ops = &nau8825_dai_ops, 1538 }; 1539 1540 /** 1541 * nau8825_enable_jack_detect - Specify a jack for event reporting 1542 * 1543 * @component: component to register the jack with 1544 * @jack: jack to use to report headset and button events on 1545 * 1546 * After this function has been called the headset insert/remove and button 1547 * events will be routed to the given jack. Jack can be null to stop 1548 * reporting. 1549 */ 1550 int nau8825_enable_jack_detect(struct snd_soc_component *component, 1551 struct snd_soc_jack *jack) 1552 { 1553 struct nau8825 *nau8825 = snd_soc_component_get_drvdata(component); 1554 struct regmap *regmap = nau8825->regmap; 1555 1556 nau8825->jack = jack; 1557 1558 if (!nau8825->jack) { 1559 regmap_update_bits(regmap, NAU8825_REG_HSD_CTRL, 1560 NAU8825_HSD_AUTO_MODE | NAU8825_SPKR_DWN1R | 1561 NAU8825_SPKR_DWN1L, 0); 1562 return 0; 1563 } 1564 /* Ground HP Outputs[1:0], needed for headset auto detection 1565 * Enable Automatic Mic/Gnd switching reading on insert interrupt[6] 1566 */ 1567 regmap_update_bits(regmap, NAU8825_REG_HSD_CTRL, 1568 NAU8825_HSD_AUTO_MODE | NAU8825_SPKR_DWN1R | NAU8825_SPKR_DWN1L, 1569 NAU8825_HSD_AUTO_MODE | NAU8825_SPKR_DWN1R | NAU8825_SPKR_DWN1L); 1570 1571 return 0; 1572 } 1573 EXPORT_SYMBOL_GPL(nau8825_enable_jack_detect); 1574 1575 1576 static bool nau8825_is_jack_inserted(struct regmap *regmap) 1577 { 1578 bool active_high, is_high; 1579 int status, jkdet; 1580 1581 regmap_read(regmap, NAU8825_REG_JACK_DET_CTRL, &jkdet); 1582 active_high = jkdet & NAU8825_JACK_POLARITY; 1583 regmap_read(regmap, NAU8825_REG_I2C_DEVICE_ID, &status); 1584 is_high = status & NAU8825_GPIO2JD1; 1585 /* return jack connection status according to jack insertion logic 1586 * active high or active low. 1587 */ 1588 return active_high == is_high; 1589 } 1590 1591 static void nau8825_restart_jack_detection(struct regmap *regmap) 1592 { 1593 /* this will restart the entire jack detection process including MIC/GND 1594 * switching and create interrupts. We have to go from 0 to 1 and back 1595 * to 0 to restart. 1596 */ 1597 regmap_update_bits(regmap, NAU8825_REG_JACK_DET_CTRL, 1598 NAU8825_JACK_DET_RESTART, NAU8825_JACK_DET_RESTART); 1599 regmap_update_bits(regmap, NAU8825_REG_JACK_DET_CTRL, 1600 NAU8825_JACK_DET_RESTART, 0); 1601 } 1602 1603 static void nau8825_int_status_clear_all(struct regmap *regmap) 1604 { 1605 int active_irq, clear_irq, i; 1606 1607 /* Reset the intrruption status from rightmost bit if the corres- 1608 * ponding irq event occurs. 1609 */ 1610 regmap_read(regmap, NAU8825_REG_IRQ_STATUS, &active_irq); 1611 for (i = 0; i < NAU8825_REG_DATA_LEN; i++) { 1612 clear_irq = (0x1 << i); 1613 if (active_irq & clear_irq) 1614 regmap_write(regmap, 1615 NAU8825_REG_INT_CLR_KEY_STATUS, clear_irq); 1616 } 1617 } 1618 1619 static void nau8825_eject_jack(struct nau8825 *nau8825) 1620 { 1621 struct snd_soc_dapm_context *dapm = nau8825->dapm; 1622 struct regmap *regmap = nau8825->regmap; 1623 1624 /* Force to cancel the cross talk detection process */ 1625 nau8825_xtalk_cancel(nau8825); 1626 1627 snd_soc_dapm_disable_pin(dapm, "SAR"); 1628 snd_soc_dapm_disable_pin(dapm, "MICBIAS"); 1629 /* Detach 2kOhm Resistors from MICBIAS to MICGND1/2 */ 1630 regmap_update_bits(regmap, NAU8825_REG_MIC_BIAS, 1631 NAU8825_MICBIAS_JKSLV | NAU8825_MICBIAS_JKR2, 0); 1632 /* ground HPL/HPR, MICGRND1/2 */ 1633 regmap_update_bits(regmap, NAU8825_REG_HSD_CTRL, 0xf, 0xf); 1634 1635 snd_soc_dapm_sync(dapm); 1636 1637 /* Clear all interruption status */ 1638 nau8825_int_status_clear_all(regmap); 1639 1640 /* Enable the insertion interruption, disable the ejection inter- 1641 * ruption, and then bypass de-bounce circuit. 1642 */ 1643 regmap_update_bits(regmap, NAU8825_REG_INTERRUPT_DIS_CTRL, 1644 NAU8825_IRQ_EJECT_DIS | NAU8825_IRQ_INSERT_DIS, 1645 NAU8825_IRQ_EJECT_DIS); 1646 regmap_update_bits(regmap, NAU8825_REG_INTERRUPT_MASK, 1647 NAU8825_IRQ_OUTPUT_EN | NAU8825_IRQ_EJECT_EN | 1648 NAU8825_IRQ_HEADSET_COMPLETE_EN | NAU8825_IRQ_INSERT_EN, 1649 NAU8825_IRQ_OUTPUT_EN | NAU8825_IRQ_EJECT_EN | 1650 NAU8825_IRQ_HEADSET_COMPLETE_EN); 1651 regmap_update_bits(regmap, NAU8825_REG_JACK_DET_CTRL, 1652 NAU8825_JACK_DET_DB_BYPASS, NAU8825_JACK_DET_DB_BYPASS); 1653 1654 /* Disable ADC needed for interruptions at audo mode */ 1655 regmap_update_bits(regmap, NAU8825_REG_ENA_CTRL, 1656 NAU8825_ENABLE_ADC, 0); 1657 1658 /* Close clock for jack type detection at manual mode */ 1659 nau8825_configure_sysclk(nau8825, NAU8825_CLK_DIS, 0); 1660 } 1661 1662 /* Enable audo mode interruptions with internal clock. */ 1663 static void nau8825_setup_auto_irq(struct nau8825 *nau8825) 1664 { 1665 struct regmap *regmap = nau8825->regmap; 1666 1667 /* Enable HSD function */ 1668 regmap_update_bits(regmap, NAU8825_REG_HSD_CTRL, 1669 NAU8825_HSD_AUTO_MODE, NAU8825_HSD_AUTO_MODE); 1670 1671 /* Enable headset jack type detection complete interruption and 1672 * jack ejection interruption. 1673 */ 1674 regmap_update_bits(regmap, NAU8825_REG_INTERRUPT_MASK, 1675 NAU8825_IRQ_HEADSET_COMPLETE_EN | NAU8825_IRQ_EJECT_EN, 0); 1676 1677 /* Enable internal VCO needed for interruptions */ 1678 nau8825_configure_sysclk(nau8825, NAU8825_CLK_INTERNAL, 0); 1679 /* Raise up the internal clock for jack detection */ 1680 regmap_update_bits(regmap, NAU8825_REG_CLK_DIVIDER, 1681 NAU8825_CLK_MCLK_SRC_MASK, 0); 1682 1683 /* Enable ADC needed for interruptions */ 1684 regmap_update_bits(regmap, NAU8825_REG_ENA_CTRL, 1685 NAU8825_ENABLE_ADC, NAU8825_ENABLE_ADC); 1686 1687 /* Chip needs one FSCLK cycle in order to generate interruptions, 1688 * as we cannot guarantee one will be provided by the system. Turning 1689 * master mode on then off enables us to generate that FSCLK cycle 1690 * with a minimum of contention on the clock bus. 1691 */ 1692 regmap_update_bits(regmap, NAU8825_REG_I2S_PCM_CTRL2, 1693 NAU8825_I2S_MS_MASK, NAU8825_I2S_MS_MASTER); 1694 regmap_update_bits(regmap, NAU8825_REG_I2S_PCM_CTRL2, 1695 NAU8825_I2S_MS_MASK, NAU8825_I2S_MS_SLAVE); 1696 1697 /* Not bypass de-bounce circuit */ 1698 regmap_update_bits(regmap, NAU8825_REG_JACK_DET_CTRL, 1699 NAU8825_JACK_DET_DB_BYPASS, 0); 1700 1701 /* Unmask all interruptions */ 1702 regmap_write(regmap, NAU8825_REG_INTERRUPT_DIS_CTRL, 0); 1703 1704 /* Restart the jack detection process at auto mode */ 1705 nau8825_restart_jack_detection(regmap); 1706 } 1707 1708 static int nau8825_button_decode(int value) 1709 { 1710 int buttons = 0; 1711 1712 /* The chip supports up to 8 buttons, but ALSA defines only 6 buttons */ 1713 if (value & BIT(0)) 1714 buttons |= SND_JACK_BTN_0; 1715 if (value & BIT(1)) 1716 buttons |= SND_JACK_BTN_1; 1717 if (value & BIT(2)) 1718 buttons |= SND_JACK_BTN_2; 1719 if (value & BIT(3)) 1720 buttons |= SND_JACK_BTN_3; 1721 if (value & BIT(4)) 1722 buttons |= SND_JACK_BTN_4; 1723 if (value & BIT(5)) 1724 buttons |= SND_JACK_BTN_5; 1725 1726 return buttons; 1727 } 1728 1729 static int nau8825_high_imped_detection(struct nau8825 *nau8825) 1730 { 1731 struct regmap *regmap = nau8825->regmap; 1732 struct snd_soc_dapm_context *dapm = nau8825->dapm; 1733 unsigned int adc_mg1, adc_mg2; 1734 1735 /* Initial phase */ 1736 regmap_update_bits(regmap, NAU8825_REG_HSD_CTRL, 1737 NAU8825_SPKR_ENGND1 | NAU8825_SPKR_ENGND2 | NAU8825_SPKR_DWN1R | 1738 NAU8825_SPKR_DWN1L, NAU8825_SPKR_ENGND1 | NAU8825_SPKR_ENGND2); 1739 regmap_update_bits(regmap, NAU8825_REG_ANALOG_CONTROL_1, 1740 NAU8825_TESTDACIN_MASK, NAU8825_TESTDACIN_GND); 1741 regmap_write(regmap, NAU8825_REG_TRIM_SETTINGS, 0x6); 1742 regmap_update_bits(regmap, NAU8825_REG_MIC_BIAS, 1743 NAU8825_MICBIAS_LOWNOISE_MASK | NAU8825_MICBIAS_VOLTAGE_MASK, 1744 NAU8825_MICBIAS_LOWNOISE_EN); 1745 regmap_update_bits(regmap, NAU8825_REG_SAR_CTRL, 1746 NAU8825_SAR_INPUT_MASK | NAU8825_SAR_TRACKING_GAIN_MASK | 1747 NAU8825_SAR_HV_SEL_MASK | NAU8825_SAR_RES_SEL_MASK | 1748 NAU8825_SAR_COMPARE_TIME_MASK | NAU8825_SAR_SAMPLING_TIME_MASK, 1749 NAU8825_SAR_HV_SEL_VDDMIC | NAU8825_SAR_RES_SEL_70K); 1750 1751 snd_soc_dapm_force_enable_pin(dapm, "MICBIAS"); 1752 snd_soc_dapm_force_enable_pin(dapm, "SAR"); 1753 snd_soc_dapm_sync(dapm); 1754 1755 /* Configure settings for first reading of SARADC */ 1756 regmap_update_bits(regmap, NAU8825_REG_HSD_CTRL, 1757 NAU8825_SPKR_ENGND1 | NAU8825_SPKR_ENGND2 | NAU8825_SPKR_DWN1R | 1758 NAU8825_SPKR_DWN1L, NAU8825_SPKR_ENGND2); 1759 regmap_update_bits(regmap, NAU8825_REG_MIC_BIAS, 1760 NAU8825_MICBIAS_JKSLV | NAU8825_MICBIAS_JKR2, 1761 NAU8825_MICBIAS_JKR2); 1762 regmap_read(regmap, NAU8825_REG_SARDOUT_RAM_STATUS, &adc_mg1); 1763 1764 /* Configure settings for second reading of SARADC */ 1765 regmap_update_bits(regmap, NAU8825_REG_MIC_BIAS, 1766 NAU8825_MICBIAS_JKSLV | NAU8825_MICBIAS_JKR2, 0); 1767 regmap_update_bits(regmap, NAU8825_REG_HSD_CTRL, 1768 NAU8825_SPKR_ENGND1 | NAU8825_SPKR_ENGND2 | NAU8825_SPKR_DWN1R | 1769 NAU8825_SPKR_DWN1L, NAU8825_SPKR_ENGND1 | NAU8825_SPKR_ENGND2 | 1770 NAU8825_SPKR_DWN1R | NAU8825_SPKR_DWN1L); 1771 regmap_update_bits(regmap, NAU8825_REG_HSD_CTRL, 1772 NAU8825_SPKR_ENGND1 | NAU8825_SPKR_ENGND2 | NAU8825_SPKR_DWN1R | 1773 NAU8825_SPKR_DWN1L, NAU8825_SPKR_ENGND1); 1774 regmap_update_bits(regmap, NAU8825_REG_MIC_BIAS, 1775 NAU8825_MICBIAS_JKSLV | NAU8825_MICBIAS_JKR2, 1776 NAU8825_MICBIAS_JKSLV); 1777 regmap_update_bits(regmap, NAU8825_REG_SAR_CTRL, 1778 NAU8825_SAR_INPUT_MASK, NAU8825_SAR_INPUT_JKSLV); 1779 regmap_read(regmap, NAU8825_REG_SARDOUT_RAM_STATUS, &adc_mg2); 1780 1781 /* Disable phase */ 1782 snd_soc_dapm_disable_pin(dapm, "SAR"); 1783 snd_soc_dapm_disable_pin(dapm, "MICBIAS"); 1784 snd_soc_dapm_sync(dapm); 1785 1786 regmap_update_bits(regmap, NAU8825_REG_MIC_BIAS, 1787 NAU8825_MICBIAS_JKSLV | NAU8825_MICBIAS_LOWNOISE_MASK | 1788 NAU8825_MICBIAS_VOLTAGE_MASK, nau8825->micbias_voltage); 1789 regmap_update_bits(regmap, NAU8825_REG_HSD_CTRL, 1790 NAU8825_SPKR_ENGND1 | NAU8825_SPKR_ENGND2 | NAU8825_SPKR_DWN1R | 1791 NAU8825_SPKR_DWN1L, NAU8825_SPKR_ENGND1 | NAU8825_SPKR_ENGND2 | 1792 NAU8825_SPKR_DWN1R | NAU8825_SPKR_DWN1L); 1793 regmap_update_bits(regmap, NAU8825_REG_ANALOG_CONTROL_1, 1794 NAU8825_TESTDACIN_MASK, NAU8825_TESTDACIN_GND); 1795 regmap_write(regmap, NAU8825_REG_TRIM_SETTINGS, 0); 1796 regmap_update_bits(regmap, NAU8825_REG_SAR_CTRL, 1797 NAU8825_SAR_TRACKING_GAIN_MASK | NAU8825_SAR_HV_SEL_MASK, 1798 nau8825->sar_voltage << NAU8825_SAR_TRACKING_GAIN_SFT); 1799 regmap_update_bits(regmap, NAU8825_REG_SAR_CTRL, 1800 NAU8825_SAR_COMPARE_TIME_MASK | NAU8825_SAR_SAMPLING_TIME_MASK, 1801 (nau8825->sar_compare_time << NAU8825_SAR_COMPARE_TIME_SFT) | 1802 (nau8825->sar_sampling_time << NAU8825_SAR_SAMPLING_TIME_SFT)); 1803 dev_dbg(nau8825->dev, "adc_mg1:%x, adc_mg2:%x\n", adc_mg1, adc_mg2); 1804 1805 /* Confirmation phase */ 1806 if (adc_mg1 > adc_mg2) { 1807 dev_dbg(nau8825->dev, "OMTP (micgnd1) mic connected\n"); 1808 1809 /* Unground MICGND1 */ 1810 regmap_update_bits(regmap, NAU8825_REG_HSD_CTRL, 1811 NAU8825_SPKR_ENGND1 | NAU8825_SPKR_ENGND2, 1812 NAU8825_SPKR_ENGND2); 1813 /* Attach 2kOhm Resistor from MICBIAS to MICGND1 */ 1814 regmap_update_bits(regmap, NAU8825_REG_MIC_BIAS, 1815 NAU8825_MICBIAS_JKSLV | NAU8825_MICBIAS_JKR2, 1816 NAU8825_MICBIAS_JKR2); 1817 /* Attach SARADC to MICGND1 */ 1818 regmap_update_bits(regmap, NAU8825_REG_SAR_CTRL, 1819 NAU8825_SAR_INPUT_MASK, 1820 NAU8825_SAR_INPUT_JKR2); 1821 } else if (adc_mg1 < adc_mg2) { 1822 dev_dbg(nau8825->dev, "CTIA (micgnd2) mic connected\n"); 1823 1824 /* Unground MICGND2 */ 1825 regmap_update_bits(regmap, NAU8825_REG_HSD_CTRL, 1826 NAU8825_SPKR_ENGND1 | NAU8825_SPKR_ENGND2, 1827 NAU8825_SPKR_ENGND1); 1828 /* Attach 2kOhm Resistor from MICBIAS to MICGND2 */ 1829 regmap_update_bits(regmap, NAU8825_REG_MIC_BIAS, 1830 NAU8825_MICBIAS_JKSLV | NAU8825_MICBIAS_JKR2, 1831 NAU8825_MICBIAS_JKSLV); 1832 /* Attach SARADC to MICGND2 */ 1833 regmap_update_bits(regmap, NAU8825_REG_SAR_CTRL, 1834 NAU8825_SAR_INPUT_MASK, 1835 NAU8825_SAR_INPUT_JKSLV); 1836 } else { 1837 dev_err(nau8825->dev, "Jack broken.\n"); 1838 return -EINVAL; 1839 } 1840 1841 return 0; 1842 } 1843 1844 static int nau8825_jack_insert(struct nau8825 *nau8825) 1845 { 1846 struct regmap *regmap = nau8825->regmap; 1847 struct snd_soc_dapm_context *dapm = nau8825->dapm; 1848 int jack_status_reg, mic_detected; 1849 int type = 0; 1850 1851 regmap_read(regmap, NAU8825_REG_GENERAL_STATUS, &jack_status_reg); 1852 mic_detected = (jack_status_reg >> 10) & 3; 1853 /* The JKSLV and JKR2 all detected in high impedance headset */ 1854 if (mic_detected == 0x3) 1855 nau8825->high_imped = true; 1856 else 1857 nau8825->high_imped = false; 1858 1859 switch (mic_detected) { 1860 case 0: 1861 /* no mic */ 1862 type = SND_JACK_HEADPHONE; 1863 break; 1864 case 1: 1865 dev_dbg(nau8825->dev, "OMTP (micgnd1) mic connected\n"); 1866 type = SND_JACK_HEADSET; 1867 1868 /* Unground MICGND1 */ 1869 regmap_update_bits(regmap, NAU8825_REG_HSD_CTRL, 3 << 2, 1870 1 << 2); 1871 /* Attach 2kOhm Resistor from MICBIAS to MICGND1 */ 1872 regmap_update_bits(regmap, NAU8825_REG_MIC_BIAS, 1873 NAU8825_MICBIAS_JKSLV | NAU8825_MICBIAS_JKR2, 1874 NAU8825_MICBIAS_JKR2); 1875 /* Attach SARADC to MICGND1 */ 1876 regmap_update_bits(regmap, NAU8825_REG_SAR_CTRL, 1877 NAU8825_SAR_INPUT_MASK, 1878 NAU8825_SAR_INPUT_JKR2); 1879 1880 snd_soc_dapm_force_enable_pin(dapm, "MICBIAS"); 1881 snd_soc_dapm_force_enable_pin(dapm, "SAR"); 1882 snd_soc_dapm_sync(dapm); 1883 break; 1884 case 2: 1885 dev_dbg(nau8825->dev, "CTIA (micgnd2) mic connected\n"); 1886 type = SND_JACK_HEADSET; 1887 1888 /* Unground MICGND2 */ 1889 regmap_update_bits(regmap, NAU8825_REG_HSD_CTRL, 3 << 2, 1890 2 << 2); 1891 /* Attach 2kOhm Resistor from MICBIAS to MICGND2 */ 1892 regmap_update_bits(regmap, NAU8825_REG_MIC_BIAS, 1893 NAU8825_MICBIAS_JKSLV | NAU8825_MICBIAS_JKR2, 1894 NAU8825_MICBIAS_JKSLV); 1895 /* Attach SARADC to MICGND2 */ 1896 regmap_update_bits(regmap, NAU8825_REG_SAR_CTRL, 1897 NAU8825_SAR_INPUT_MASK, 1898 NAU8825_SAR_INPUT_JKSLV); 1899 1900 snd_soc_dapm_force_enable_pin(dapm, "MICBIAS"); 1901 snd_soc_dapm_force_enable_pin(dapm, "SAR"); 1902 snd_soc_dapm_sync(dapm); 1903 break; 1904 case 3: 1905 /* Detection failure case */ 1906 dev_warn(nau8825->dev, 1907 "Detection failure. Try the manually mechanism for jack type checking.\n"); 1908 if (!nau8825_high_imped_detection(nau8825)) { 1909 type = SND_JACK_HEADSET; 1910 snd_soc_dapm_force_enable_pin(dapm, "MICBIAS"); 1911 snd_soc_dapm_force_enable_pin(dapm, "SAR"); 1912 snd_soc_dapm_sync(dapm); 1913 } else 1914 type = SND_JACK_HEADPHONE; 1915 break; 1916 } 1917 1918 /* Update to the default divider of internal clock for power saving */ 1919 regmap_update_bits(regmap, NAU8825_REG_CLK_DIVIDER, 1920 NAU8825_CLK_MCLK_SRC_MASK, 0xf); 1921 1922 /* Disable HSD function */ 1923 regmap_update_bits(regmap, NAU8825_REG_HSD_CTRL, NAU8825_HSD_AUTO_MODE, 0); 1924 1925 /* Leaving HPOL/R grounded after jack insert by default. They will be 1926 * ungrounded as part of the widget power up sequence at the beginning 1927 * of playback to reduce pop. 1928 */ 1929 return type; 1930 } 1931 1932 #define NAU8825_BUTTONS (SND_JACK_BTN_0 | SND_JACK_BTN_1 | \ 1933 SND_JACK_BTN_2 | SND_JACK_BTN_3) 1934 1935 static irqreturn_t nau8825_interrupt(int irq, void *data) 1936 { 1937 struct nau8825 *nau8825 = (struct nau8825 *)data; 1938 struct regmap *regmap = nau8825->regmap; 1939 int active_irq, clear_irq = 0, event = 0, event_mask = 0; 1940 1941 if (regmap_read(regmap, NAU8825_REG_IRQ_STATUS, &active_irq)) { 1942 dev_err(nau8825->dev, "failed to read irq status\n"); 1943 return IRQ_NONE; 1944 } 1945 1946 if ((active_irq & NAU8825_JACK_EJECTION_IRQ_MASK) == 1947 NAU8825_JACK_EJECTION_DETECTED) { 1948 1949 nau8825_eject_jack(nau8825); 1950 event_mask |= SND_JACK_HEADSET; 1951 clear_irq = NAU8825_JACK_EJECTION_IRQ_MASK; 1952 } else if (active_irq & NAU8825_KEY_SHORT_PRESS_IRQ) { 1953 int key_status; 1954 1955 regmap_read(regmap, NAU8825_REG_INT_CLR_KEY_STATUS, 1956 &key_status); 1957 1958 /* upper 8 bits of the register are for short pressed keys, 1959 * lower 8 bits - for long pressed buttons 1960 */ 1961 nau8825->button_pressed = nau8825_button_decode( 1962 key_status >> 8); 1963 1964 event |= nau8825->button_pressed; 1965 event_mask |= NAU8825_BUTTONS; 1966 clear_irq = NAU8825_KEY_SHORT_PRESS_IRQ; 1967 } else if (active_irq & NAU8825_KEY_RELEASE_IRQ) { 1968 event_mask = NAU8825_BUTTONS; 1969 clear_irq = NAU8825_KEY_RELEASE_IRQ; 1970 } else if (active_irq & NAU8825_HEADSET_COMPLETION_IRQ) { 1971 if (nau8825_is_jack_inserted(regmap)) { 1972 event |= nau8825_jack_insert(nau8825); 1973 if (nau8825->xtalk_enable && !nau8825->high_imped) { 1974 /* Apply the cross talk suppression in the 1975 * headset without high impedance. 1976 */ 1977 if (!nau8825->xtalk_protect) { 1978 /* Raise protection for cross talk de- 1979 * tection if no protection before. 1980 * The driver has to cancel the pro- 1981 * cess and restore changes if process 1982 * is ongoing when ejection. 1983 */ 1984 int ret; 1985 nau8825->xtalk_protect = true; 1986 ret = nau8825_sema_acquire(nau8825, 0); 1987 if (ret) 1988 nau8825->xtalk_protect = false; 1989 } 1990 /* Startup cross talk detection process */ 1991 if (nau8825->xtalk_protect) { 1992 nau8825->xtalk_state = 1993 NAU8825_XTALK_PREPARE; 1994 schedule_work(&nau8825->xtalk_work); 1995 } 1996 } else { 1997 /* The cross talk suppression shouldn't apply 1998 * in the headset with high impedance. Thus, 1999 * relieve the protection raised before. 2000 */ 2001 if (nau8825->xtalk_protect) { 2002 nau8825_sema_release(nau8825); 2003 nau8825->xtalk_protect = false; 2004 } 2005 } 2006 } else { 2007 dev_warn(nau8825->dev, "Headset completion IRQ fired but no headset connected\n"); 2008 nau8825_eject_jack(nau8825); 2009 } 2010 2011 event_mask |= SND_JACK_HEADSET; 2012 clear_irq = NAU8825_HEADSET_COMPLETION_IRQ; 2013 /* Record the interruption report event for driver to report 2014 * the event later. The jack report will delay until cross 2015 * talk detection process is done. 2016 */ 2017 if (nau8825->xtalk_state == NAU8825_XTALK_PREPARE) { 2018 nau8825->xtalk_event = event; 2019 nau8825->xtalk_event_mask = event_mask; 2020 } 2021 } else if (active_irq & NAU8825_IMPEDANCE_MEAS_IRQ) { 2022 /* crosstalk detection enable and process on going */ 2023 if (nau8825->xtalk_enable && nau8825->xtalk_protect) 2024 schedule_work(&nau8825->xtalk_work); 2025 clear_irq = NAU8825_IMPEDANCE_MEAS_IRQ; 2026 } else if ((active_irq & NAU8825_JACK_INSERTION_IRQ_MASK) == 2027 NAU8825_JACK_INSERTION_DETECTED) { 2028 /* One more step to check GPIO status directly. Thus, the 2029 * driver can confirm the real insertion interruption because 2030 * the intrruption at manual mode has bypassed debounce 2031 * circuit which can get rid of unstable status. 2032 */ 2033 if (nau8825_is_jack_inserted(regmap)) { 2034 /* Turn off insertion interruption at manual mode */ 2035 regmap_update_bits(regmap, 2036 NAU8825_REG_INTERRUPT_DIS_CTRL, 2037 NAU8825_IRQ_INSERT_DIS, 2038 NAU8825_IRQ_INSERT_DIS); 2039 regmap_update_bits(regmap, NAU8825_REG_INTERRUPT_MASK, 2040 NAU8825_IRQ_INSERT_EN, NAU8825_IRQ_INSERT_EN); 2041 /* Enable interruption for jack type detection at audo 2042 * mode which can detect microphone and jack type. 2043 */ 2044 nau8825_setup_auto_irq(nau8825); 2045 } 2046 } 2047 2048 if (!clear_irq) 2049 clear_irq = active_irq; 2050 /* clears the rightmost interruption */ 2051 regmap_write(regmap, NAU8825_REG_INT_CLR_KEY_STATUS, clear_irq); 2052 2053 /* Delay jack report until cross talk detection is done. It can avoid 2054 * application to do playback preparation when cross talk detection 2055 * process is still working. Otherwise, the resource like clock and 2056 * power will be issued by them at the same time and conflict happens. 2057 */ 2058 if (event_mask && nau8825->xtalk_state == NAU8825_XTALK_DONE) 2059 snd_soc_jack_report(nau8825->jack, event, event_mask); 2060 2061 return IRQ_HANDLED; 2062 } 2063 2064 static void nau8825_setup_buttons(struct nau8825 *nau8825) 2065 { 2066 struct regmap *regmap = nau8825->regmap; 2067 2068 regmap_update_bits(regmap, NAU8825_REG_SAR_CTRL, 2069 NAU8825_SAR_TRACKING_GAIN_MASK, 2070 nau8825->sar_voltage << NAU8825_SAR_TRACKING_GAIN_SFT); 2071 regmap_update_bits(regmap, NAU8825_REG_SAR_CTRL, 2072 NAU8825_SAR_COMPARE_TIME_MASK, 2073 nau8825->sar_compare_time << NAU8825_SAR_COMPARE_TIME_SFT); 2074 regmap_update_bits(regmap, NAU8825_REG_SAR_CTRL, 2075 NAU8825_SAR_SAMPLING_TIME_MASK, 2076 nau8825->sar_sampling_time << NAU8825_SAR_SAMPLING_TIME_SFT); 2077 2078 regmap_update_bits(regmap, NAU8825_REG_KEYDET_CTRL, 2079 NAU8825_KEYDET_LEVELS_NR_MASK, 2080 (nau8825->sar_threshold_num - 1) << NAU8825_KEYDET_LEVELS_NR_SFT); 2081 regmap_update_bits(regmap, NAU8825_REG_KEYDET_CTRL, 2082 NAU8825_KEYDET_HYSTERESIS_MASK, 2083 nau8825->sar_hysteresis << NAU8825_KEYDET_HYSTERESIS_SFT); 2084 regmap_update_bits(regmap, NAU8825_REG_KEYDET_CTRL, 2085 NAU8825_KEYDET_SHORTKEY_DEBOUNCE_MASK, 2086 nau8825->key_debounce << NAU8825_KEYDET_SHORTKEY_DEBOUNCE_SFT); 2087 2088 regmap_write(regmap, NAU8825_REG_VDET_THRESHOLD_1, 2089 (nau8825->sar_threshold[0] << 8) | nau8825->sar_threshold[1]); 2090 regmap_write(regmap, NAU8825_REG_VDET_THRESHOLD_2, 2091 (nau8825->sar_threshold[2] << 8) | nau8825->sar_threshold[3]); 2092 regmap_write(regmap, NAU8825_REG_VDET_THRESHOLD_3, 2093 (nau8825->sar_threshold[4] << 8) | nau8825->sar_threshold[5]); 2094 regmap_write(regmap, NAU8825_REG_VDET_THRESHOLD_4, 2095 (nau8825->sar_threshold[6] << 8) | nau8825->sar_threshold[7]); 2096 2097 /* Enable short press and release interruptions */ 2098 regmap_update_bits(regmap, NAU8825_REG_INTERRUPT_MASK, 2099 NAU8825_IRQ_KEY_SHORT_PRESS_EN | NAU8825_IRQ_KEY_RELEASE_EN, 2100 0); 2101 } 2102 2103 static void nau8825_init_regs(struct nau8825 *nau8825) 2104 { 2105 struct regmap *regmap = nau8825->regmap; 2106 2107 /* Latch IIC LSB value */ 2108 regmap_write(regmap, NAU8825_REG_IIC_ADDR_SET, 0x0001); 2109 /* Enable Bias/Vmid */ 2110 regmap_update_bits(nau8825->regmap, NAU8825_REG_BIAS_ADJ, 2111 NAU8825_BIAS_VMID, NAU8825_BIAS_VMID); 2112 regmap_update_bits(nau8825->regmap, NAU8825_REG_BOOST, 2113 NAU8825_GLOBAL_BIAS_EN, NAU8825_GLOBAL_BIAS_EN); 2114 2115 /* VMID Tieoff */ 2116 regmap_update_bits(regmap, NAU8825_REG_BIAS_ADJ, 2117 NAU8825_BIAS_VMID_SEL_MASK, 2118 nau8825->vref_impedance << NAU8825_BIAS_VMID_SEL_SFT); 2119 /* Disable Boost Driver, Automatic Short circuit protection enable */ 2120 regmap_update_bits(regmap, NAU8825_REG_BOOST, 2121 NAU8825_PRECHARGE_DIS | NAU8825_HP_BOOST_DIS | 2122 NAU8825_HP_BOOST_G_DIS | NAU8825_SHORT_SHUTDOWN_EN, 2123 NAU8825_PRECHARGE_DIS | NAU8825_HP_BOOST_DIS | 2124 NAU8825_HP_BOOST_G_DIS | NAU8825_SHORT_SHUTDOWN_EN); 2125 2126 regmap_update_bits(regmap, NAU8825_REG_GPIO12_CTRL, 2127 NAU8825_JKDET_OUTPUT_EN, 2128 nau8825->jkdet_enable ? 0 : NAU8825_JKDET_OUTPUT_EN); 2129 regmap_update_bits(regmap, NAU8825_REG_GPIO12_CTRL, 2130 NAU8825_JKDET_PULL_EN, 2131 nau8825->jkdet_pull_enable ? 0 : NAU8825_JKDET_PULL_EN); 2132 regmap_update_bits(regmap, NAU8825_REG_GPIO12_CTRL, 2133 NAU8825_JKDET_PULL_UP, 2134 nau8825->jkdet_pull_up ? NAU8825_JKDET_PULL_UP : 0); 2135 regmap_update_bits(regmap, NAU8825_REG_JACK_DET_CTRL, 2136 NAU8825_JACK_POLARITY, 2137 /* jkdet_polarity - 1 is for active-low */ 2138 nau8825->jkdet_polarity ? 0 : NAU8825_JACK_POLARITY); 2139 2140 regmap_update_bits(regmap, NAU8825_REG_JACK_DET_CTRL, 2141 NAU8825_JACK_INSERT_DEBOUNCE_MASK, 2142 nau8825->jack_insert_debounce << NAU8825_JACK_INSERT_DEBOUNCE_SFT); 2143 regmap_update_bits(regmap, NAU8825_REG_JACK_DET_CTRL, 2144 NAU8825_JACK_EJECT_DEBOUNCE_MASK, 2145 nau8825->jack_eject_debounce << NAU8825_JACK_EJECT_DEBOUNCE_SFT); 2146 2147 /* Pull up IRQ pin */ 2148 regmap_update_bits(regmap, NAU8825_REG_INTERRUPT_MASK, 2149 NAU8825_IRQ_PIN_PULLUP | NAU8825_IRQ_PIN_PULL_EN, 2150 NAU8825_IRQ_PIN_PULLUP | NAU8825_IRQ_PIN_PULL_EN); 2151 /* Mask unneeded IRQs: 1 - disable, 0 - enable */ 2152 regmap_update_bits(regmap, NAU8825_REG_INTERRUPT_MASK, 0x7ff, 0x7ff); 2153 2154 regmap_update_bits(regmap, NAU8825_REG_MIC_BIAS, 2155 NAU8825_MICBIAS_VOLTAGE_MASK, nau8825->micbias_voltage); 2156 2157 if (nau8825->sar_threshold_num) 2158 nau8825_setup_buttons(nau8825); 2159 2160 /* Default oversampling/decimations settings are unusable 2161 * (audible hiss). Set it to something better. 2162 */ 2163 regmap_update_bits(regmap, NAU8825_REG_ADC_RATE, 2164 NAU8825_ADC_SYNC_DOWN_MASK | NAU8825_ADC_SINC4_EN, 2165 NAU8825_ADC_SYNC_DOWN_64); 2166 regmap_update_bits(regmap, NAU8825_REG_DAC_CTRL1, 2167 NAU8825_DAC_OVERSAMPLE_MASK, NAU8825_DAC_OVERSAMPLE_64); 2168 /* Disable DACR/L power */ 2169 if (nau8825->sw_id == NAU8825_SOFTWARE_ID_NAU8825) 2170 regmap_update_bits(regmap, NAU8825_REG_CHARGE_PUMP, 2171 NAU8825_POWER_DOWN_DACR | NAU8825_POWER_DOWN_DACL, 2172 NAU8825_POWER_DOWN_DACR | NAU8825_POWER_DOWN_DACL); 2173 /* Enable TESTDAC. This sets the analog DAC inputs to a '0' input 2174 * signal to avoid any glitches due to power up transients in both 2175 * the analog and digital DAC circuit. 2176 */ 2177 regmap_update_bits(nau8825->regmap, NAU8825_REG_BIAS_ADJ, 2178 NAU8825_BIAS_TESTDAC_EN, NAU8825_BIAS_TESTDAC_EN); 2179 /* CICCLP off */ 2180 regmap_update_bits(regmap, NAU8825_REG_DAC_CTRL1, 2181 NAU8825_DAC_CLIP_OFF, NAU8825_DAC_CLIP_OFF); 2182 2183 /* Class AB bias current to 2x, DAC Capacitor enable MSB/LSB */ 2184 regmap_update_bits(regmap, NAU8825_REG_ANALOG_CONTROL_2, 2185 NAU8825_HP_NON_CLASSG_CURRENT_2xADJ | 2186 NAU8825_DAC_CAPACITOR_MSB | NAU8825_DAC_CAPACITOR_LSB, 2187 NAU8825_HP_NON_CLASSG_CURRENT_2xADJ | 2188 NAU8825_DAC_CAPACITOR_MSB | NAU8825_DAC_CAPACITOR_LSB); 2189 /* Class G timer 64ms */ 2190 regmap_update_bits(regmap, NAU8825_REG_CLASSG_CTRL, 2191 NAU8825_CLASSG_TIMER_MASK, 2192 0x20 << NAU8825_CLASSG_TIMER_SFT); 2193 /* DAC clock delay 2ns, VREF */ 2194 regmap_update_bits(regmap, NAU8825_REG_RDAC, 2195 NAU8825_RDAC_CLK_DELAY_MASK | NAU8825_RDAC_VREF_MASK, 2196 (0x2 << NAU8825_RDAC_CLK_DELAY_SFT) | 2197 (0x3 << NAU8825_RDAC_VREF_SFT)); 2198 /* Config L/R channel */ 2199 regmap_update_bits(nau8825->regmap, NAU8825_REG_DACL_CTRL, 2200 NAU8825_DACL_CH_SEL_MASK, NAU8825_DACL_CH_SEL_L); 2201 regmap_update_bits(nau8825->regmap, NAU8825_REG_DACR_CTRL, 2202 NAU8825_DACL_CH_SEL_MASK, NAU8825_DACL_CH_SEL_R); 2203 /* Disable short Frame Sync detection logic */ 2204 regmap_update_bits(regmap, NAU8825_REG_LEFT_TIME_SLOT, 2205 NAU8825_DIS_FS_SHORT_DET, NAU8825_DIS_FS_SHORT_DET); 2206 /* ADCDAT IO drive strength control */ 2207 regmap_update_bits(regmap, NAU8825_REG_CHARGE_PUMP, 2208 NAU8825_ADCOUT_DS_MASK, 2209 nau8825->adcout_ds << NAU8825_ADCOUT_DS_SFT); 2210 } 2211 2212 static const struct regmap_config nau8825_regmap_config = { 2213 .val_bits = NAU8825_REG_DATA_LEN, 2214 .reg_bits = NAU8825_REG_ADDR_LEN, 2215 2216 .max_register = NAU8825_REG_MAX, 2217 .readable_reg = nau8825_readable_reg, 2218 .writeable_reg = nau8825_writeable_reg, 2219 .volatile_reg = nau8825_volatile_reg, 2220 2221 .cache_type = REGCACHE_RBTREE, 2222 .reg_defaults = nau8825_reg_defaults, 2223 .num_reg_defaults = ARRAY_SIZE(nau8825_reg_defaults), 2224 }; 2225 2226 static int nau8825_component_probe(struct snd_soc_component *component) 2227 { 2228 struct nau8825 *nau8825 = snd_soc_component_get_drvdata(component); 2229 struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(component); 2230 2231 nau8825->dapm = dapm; 2232 2233 return 0; 2234 } 2235 2236 static void nau8825_component_remove(struct snd_soc_component *component) 2237 { 2238 struct nau8825 *nau8825 = snd_soc_component_get_drvdata(component); 2239 2240 /* Cancel and reset cross tak suppresstion detection funciton */ 2241 nau8825_xtalk_cancel(nau8825); 2242 } 2243 2244 /** 2245 * nau8825_calc_fll_param - Calculate FLL parameters. 2246 * @fll_in: external clock provided to codec. 2247 * @fs: sampling rate. 2248 * @fll_param: Pointer to structure of FLL parameters. 2249 * 2250 * Calculate FLL parameters to configure codec. 2251 * 2252 * Returns 0 for success or negative error code. 2253 */ 2254 static int nau8825_calc_fll_param(unsigned int fll_in, unsigned int fs, 2255 struct nau8825_fll *fll_param) 2256 { 2257 u64 fvco, fvco_max; 2258 unsigned int fref, i, fvco_sel; 2259 2260 /* Ensure the reference clock frequency (FREF) is <= 13.5MHz by dividing 2261 * freq_in by 1, 2, 4, or 8 using FLL pre-scalar. 2262 * FREF = freq_in / NAU8825_FLL_REF_DIV_MASK 2263 */ 2264 for (i = 0; i < ARRAY_SIZE(fll_pre_scalar); i++) { 2265 fref = fll_in / fll_pre_scalar[i].param; 2266 if (fref <= NAU_FREF_MAX) 2267 break; 2268 } 2269 if (i == ARRAY_SIZE(fll_pre_scalar)) 2270 return -EINVAL; 2271 fll_param->clk_ref_div = fll_pre_scalar[i].val; 2272 2273 /* Choose the FLL ratio based on FREF */ 2274 for (i = 0; i < ARRAY_SIZE(fll_ratio); i++) { 2275 if (fref >= fll_ratio[i].param) 2276 break; 2277 } 2278 if (i == ARRAY_SIZE(fll_ratio)) 2279 return -EINVAL; 2280 fll_param->ratio = fll_ratio[i].val; 2281 2282 /* Calculate the frequency of DCO (FDCO) given freq_out = 256 * Fs. 2283 * FDCO must be within the 90MHz - 124MHz or the FFL cannot be 2284 * guaranteed across the full range of operation. 2285 * FDCO = freq_out * 2 * mclk_src_scaling 2286 */ 2287 fvco_max = 0; 2288 fvco_sel = ARRAY_SIZE(mclk_src_scaling); 2289 for (i = 0; i < ARRAY_SIZE(mclk_src_scaling); i++) { 2290 fvco = 256ULL * fs * 2 * mclk_src_scaling[i].param; 2291 if (fvco > NAU_FVCO_MIN && fvco < NAU_FVCO_MAX && 2292 fvco_max < fvco) { 2293 fvco_max = fvco; 2294 fvco_sel = i; 2295 } 2296 } 2297 if (ARRAY_SIZE(mclk_src_scaling) == fvco_sel) 2298 return -EINVAL; 2299 fll_param->mclk_src = mclk_src_scaling[fvco_sel].val; 2300 2301 /* Calculate the FLL 10-bit integer input and the FLL 16-bit fractional 2302 * input based on FDCO, FREF and FLL ratio. 2303 */ 2304 fvco = div_u64(fvco_max << fll_param->fll_frac_num, fref * fll_param->ratio); 2305 fll_param->fll_int = (fvco >> fll_param->fll_frac_num) & 0x3FF; 2306 if (fll_param->fll_frac_num == 16) 2307 fll_param->fll_frac = fvco & 0xFFFF; 2308 else 2309 fll_param->fll_frac = fvco & 0xFFFFFF; 2310 return 0; 2311 } 2312 2313 static void nau8825_fll_apply(struct nau8825 *nau8825, 2314 struct nau8825_fll *fll_param) 2315 { 2316 regmap_update_bits(nau8825->regmap, NAU8825_REG_CLK_DIVIDER, 2317 NAU8825_CLK_SRC_MASK | NAU8825_CLK_MCLK_SRC_MASK, 2318 NAU8825_CLK_SRC_MCLK | fll_param->mclk_src); 2319 /* Make DSP operate at high speed for better performance. */ 2320 regmap_update_bits(nau8825->regmap, NAU8825_REG_FLL1, 2321 NAU8825_FLL_RATIO_MASK | NAU8825_ICTRL_LATCH_MASK, 2322 fll_param->ratio | (0x6 << NAU8825_ICTRL_LATCH_SFT)); 2323 /* FLL 16/24 bit fractional input */ 2324 if (fll_param->fll_frac_num == 16) 2325 regmap_write(nau8825->regmap, NAU8825_REG_FLL2, 2326 fll_param->fll_frac); 2327 else { 2328 regmap_write(nau8825->regmap, NAU8825_REG_FLL2_LOWER, 2329 fll_param->fll_frac & 0xffff); 2330 regmap_write(nau8825->regmap, NAU8825_REG_FLL2_UPPER, 2331 (fll_param->fll_frac >> 16) & 0xff); 2332 } 2333 /* FLL 10-bit integer input */ 2334 regmap_update_bits(nau8825->regmap, NAU8825_REG_FLL3, 2335 NAU8825_FLL_INTEGER_MASK, fll_param->fll_int); 2336 /* FLL pre-scaler */ 2337 regmap_update_bits(nau8825->regmap, NAU8825_REG_FLL4, 2338 NAU8825_FLL_REF_DIV_MASK, 2339 fll_param->clk_ref_div << NAU8825_FLL_REF_DIV_SFT); 2340 /* select divided VCO input */ 2341 regmap_update_bits(nau8825->regmap, NAU8825_REG_FLL5, 2342 NAU8825_FLL_CLK_SW_MASK, NAU8825_FLL_CLK_SW_REF); 2343 /* Disable free-running mode */ 2344 regmap_update_bits(nau8825->regmap, 2345 NAU8825_REG_FLL6, NAU8825_DCO_EN, 0); 2346 if (fll_param->fll_frac) { 2347 /* set FLL loop filter enable and cutoff frequency at 500Khz */ 2348 regmap_update_bits(nau8825->regmap, NAU8825_REG_FLL5, 2349 NAU8825_FLL_PDB_DAC_EN | NAU8825_FLL_LOOP_FTR_EN | 2350 NAU8825_FLL_FTR_SW_MASK, 2351 NAU8825_FLL_PDB_DAC_EN | NAU8825_FLL_LOOP_FTR_EN | 2352 NAU8825_FLL_FTR_SW_FILTER); 2353 regmap_update_bits(nau8825->regmap, NAU8825_REG_FLL6, 2354 NAU8825_SDM_EN | NAU8825_CUTOFF500, 2355 NAU8825_SDM_EN | NAU8825_CUTOFF500); 2356 } else { 2357 /* disable FLL loop filter and cutoff frequency */ 2358 regmap_update_bits(nau8825->regmap, NAU8825_REG_FLL5, 2359 NAU8825_FLL_PDB_DAC_EN | NAU8825_FLL_LOOP_FTR_EN | 2360 NAU8825_FLL_FTR_SW_MASK, NAU8825_FLL_FTR_SW_ACCU); 2361 regmap_update_bits(nau8825->regmap, NAU8825_REG_FLL6, 2362 NAU8825_SDM_EN | NAU8825_CUTOFF500, 0); 2363 } 2364 } 2365 2366 /* freq_out must be 256*Fs in order to achieve the best performance */ 2367 static int nau8825_set_pll(struct snd_soc_component *component, int pll_id, int source, 2368 unsigned int freq_in, unsigned int freq_out) 2369 { 2370 struct nau8825 *nau8825 = snd_soc_component_get_drvdata(component); 2371 struct nau8825_fll fll_param; 2372 int ret, fs; 2373 2374 if (nau8825->sw_id == NAU8825_SOFTWARE_ID_NAU8825) 2375 fll_param.fll_frac_num = 16; 2376 else 2377 fll_param.fll_frac_num = 24; 2378 2379 fs = freq_out / 256; 2380 ret = nau8825_calc_fll_param(freq_in, fs, &fll_param); 2381 if (ret < 0) { 2382 dev_err(component->dev, "Unsupported input clock %d\n", freq_in); 2383 return ret; 2384 } 2385 dev_dbg(component->dev, "mclk_src=%x ratio=%x fll_frac=%x fll_int=%x clk_ref_div=%x\n", 2386 fll_param.mclk_src, fll_param.ratio, fll_param.fll_frac, 2387 fll_param.fll_int, fll_param.clk_ref_div); 2388 2389 nau8825_fll_apply(nau8825, &fll_param); 2390 mdelay(2); 2391 regmap_update_bits(nau8825->regmap, NAU8825_REG_CLK_DIVIDER, 2392 NAU8825_CLK_SRC_MASK, NAU8825_CLK_SRC_VCO); 2393 return 0; 2394 } 2395 2396 static int nau8825_mclk_prepare(struct nau8825 *nau8825, unsigned int freq) 2397 { 2398 int ret; 2399 2400 nau8825->mclk = devm_clk_get(nau8825->dev, "mclk"); 2401 if (IS_ERR(nau8825->mclk)) { 2402 dev_info(nau8825->dev, "No 'mclk' clock found, assume MCLK is managed externally"); 2403 return 0; 2404 } 2405 2406 if (!nau8825->mclk_freq) { 2407 ret = clk_prepare_enable(nau8825->mclk); 2408 if (ret) { 2409 dev_err(nau8825->dev, "Unable to prepare codec mclk\n"); 2410 return ret; 2411 } 2412 } 2413 2414 if (nau8825->mclk_freq != freq) { 2415 freq = clk_round_rate(nau8825->mclk, freq); 2416 ret = clk_set_rate(nau8825->mclk, freq); 2417 if (ret) { 2418 dev_err(nau8825->dev, "Unable to set mclk rate\n"); 2419 return ret; 2420 } 2421 nau8825->mclk_freq = freq; 2422 } 2423 2424 return 0; 2425 } 2426 2427 static void nau8825_configure_mclk_as_sysclk(struct regmap *regmap) 2428 { 2429 regmap_update_bits(regmap, NAU8825_REG_CLK_DIVIDER, 2430 NAU8825_CLK_SRC_MASK, NAU8825_CLK_SRC_MCLK); 2431 regmap_update_bits(regmap, NAU8825_REG_FLL6, 2432 NAU8825_DCO_EN, 0); 2433 /* Make DSP operate as default setting for power saving. */ 2434 regmap_update_bits(regmap, NAU8825_REG_FLL1, 2435 NAU8825_ICTRL_LATCH_MASK, 0); 2436 } 2437 2438 static int nau8825_configure_sysclk(struct nau8825 *nau8825, int clk_id, 2439 unsigned int freq) 2440 { 2441 struct regmap *regmap = nau8825->regmap; 2442 int ret; 2443 2444 switch (clk_id) { 2445 case NAU8825_CLK_DIS: 2446 /* Clock provided externally and disable internal VCO clock */ 2447 nau8825_configure_mclk_as_sysclk(regmap); 2448 if (nau8825->mclk_freq) { 2449 clk_disable_unprepare(nau8825->mclk); 2450 nau8825->mclk_freq = 0; 2451 } 2452 2453 break; 2454 case NAU8825_CLK_MCLK: 2455 /* Acquire the semaphore to synchronize the playback and 2456 * interrupt handler. In order to avoid the playback inter- 2457 * fered by cross talk process, the driver make the playback 2458 * preparation halted until cross talk process finish. 2459 */ 2460 nau8825_sema_acquire(nau8825, 3 * HZ); 2461 nau8825_configure_mclk_as_sysclk(regmap); 2462 /* MCLK not changed by clock tree */ 2463 regmap_update_bits(regmap, NAU8825_REG_CLK_DIVIDER, 2464 NAU8825_CLK_MCLK_SRC_MASK, 0); 2465 /* Release the semaphore. */ 2466 nau8825_sema_release(nau8825); 2467 2468 ret = nau8825_mclk_prepare(nau8825, freq); 2469 if (ret) 2470 return ret; 2471 2472 break; 2473 case NAU8825_CLK_INTERNAL: 2474 if (nau8825_is_jack_inserted(nau8825->regmap)) { 2475 regmap_update_bits(regmap, NAU8825_REG_FLL6, 2476 NAU8825_DCO_EN, NAU8825_DCO_EN); 2477 regmap_update_bits(regmap, NAU8825_REG_CLK_DIVIDER, 2478 NAU8825_CLK_SRC_MASK, NAU8825_CLK_SRC_VCO); 2479 /* Decrease the VCO frequency and make DSP operate 2480 * as default setting for power saving. 2481 */ 2482 regmap_update_bits(regmap, NAU8825_REG_CLK_DIVIDER, 2483 NAU8825_CLK_MCLK_SRC_MASK, 0xf); 2484 regmap_update_bits(regmap, NAU8825_REG_FLL1, 2485 NAU8825_ICTRL_LATCH_MASK | 2486 NAU8825_FLL_RATIO_MASK, 0x10); 2487 regmap_update_bits(regmap, NAU8825_REG_FLL6, 2488 NAU8825_SDM_EN, NAU8825_SDM_EN); 2489 } else { 2490 /* The clock turns off intentionally for power saving 2491 * when no headset connected. 2492 */ 2493 nau8825_configure_mclk_as_sysclk(regmap); 2494 dev_warn(nau8825->dev, "Disable clock for power saving when no headset connected\n"); 2495 } 2496 if (nau8825->mclk_freq) { 2497 clk_disable_unprepare(nau8825->mclk); 2498 nau8825->mclk_freq = 0; 2499 } 2500 2501 break; 2502 case NAU8825_CLK_FLL_MCLK: 2503 /* Acquire the semaphore to synchronize the playback and 2504 * interrupt handler. In order to avoid the playback inter- 2505 * fered by cross talk process, the driver make the playback 2506 * preparation halted until cross talk process finish. 2507 */ 2508 nau8825_sema_acquire(nau8825, 3 * HZ); 2509 /* Higher FLL reference input frequency can only set lower 2510 * gain error, such as 0000 for input reference from MCLK 2511 * 12.288Mhz. 2512 */ 2513 regmap_update_bits(regmap, NAU8825_REG_FLL3, 2514 NAU8825_FLL_CLK_SRC_MASK | NAU8825_GAIN_ERR_MASK, 2515 NAU8825_FLL_CLK_SRC_MCLK | 0); 2516 /* Release the semaphore. */ 2517 nau8825_sema_release(nau8825); 2518 2519 ret = nau8825_mclk_prepare(nau8825, freq); 2520 if (ret) 2521 return ret; 2522 2523 break; 2524 case NAU8825_CLK_FLL_BLK: 2525 /* Acquire the semaphore to synchronize the playback and 2526 * interrupt handler. In order to avoid the playback inter- 2527 * fered by cross talk process, the driver make the playback 2528 * preparation halted until cross talk process finish. 2529 */ 2530 nau8825_sema_acquire(nau8825, 3 * HZ); 2531 /* If FLL reference input is from low frequency source, 2532 * higher error gain can apply such as 0xf which has 2533 * the most sensitive gain error correction threshold, 2534 * Therefore, FLL has the most accurate DCO to 2535 * target frequency. 2536 */ 2537 regmap_update_bits(regmap, NAU8825_REG_FLL3, 2538 NAU8825_FLL_CLK_SRC_MASK | NAU8825_GAIN_ERR_MASK, 2539 NAU8825_FLL_CLK_SRC_BLK | 2540 (0xf << NAU8825_GAIN_ERR_SFT)); 2541 /* Release the semaphore. */ 2542 nau8825_sema_release(nau8825); 2543 2544 if (nau8825->mclk_freq) { 2545 clk_disable_unprepare(nau8825->mclk); 2546 nau8825->mclk_freq = 0; 2547 } 2548 2549 break; 2550 case NAU8825_CLK_FLL_FS: 2551 /* Acquire the semaphore to synchronize the playback and 2552 * interrupt handler. In order to avoid the playback inter- 2553 * fered by cross talk process, the driver make the playback 2554 * preparation halted until cross talk process finish. 2555 */ 2556 nau8825_sema_acquire(nau8825, 3 * HZ); 2557 /* If FLL reference input is from low frequency source, 2558 * higher error gain can apply such as 0xf which has 2559 * the most sensitive gain error correction threshold, 2560 * Therefore, FLL has the most accurate DCO to 2561 * target frequency. 2562 */ 2563 regmap_update_bits(regmap, NAU8825_REG_FLL3, 2564 NAU8825_FLL_CLK_SRC_MASK | NAU8825_GAIN_ERR_MASK, 2565 NAU8825_FLL_CLK_SRC_FS | 2566 (0xf << NAU8825_GAIN_ERR_SFT)); 2567 /* Release the semaphore. */ 2568 nau8825_sema_release(nau8825); 2569 2570 if (nau8825->mclk_freq) { 2571 clk_disable_unprepare(nau8825->mclk); 2572 nau8825->mclk_freq = 0; 2573 } 2574 2575 break; 2576 default: 2577 dev_err(nau8825->dev, "Invalid clock id (%d)\n", clk_id); 2578 return -EINVAL; 2579 } 2580 2581 dev_dbg(nau8825->dev, "Sysclk is %dHz and clock id is %d\n", freq, 2582 clk_id); 2583 return 0; 2584 } 2585 2586 static int nau8825_set_sysclk(struct snd_soc_component *component, int clk_id, 2587 int source, unsigned int freq, int dir) 2588 { 2589 struct nau8825 *nau8825 = snd_soc_component_get_drvdata(component); 2590 2591 return nau8825_configure_sysclk(nau8825, clk_id, freq); 2592 } 2593 2594 static int nau8825_resume_setup(struct nau8825 *nau8825) 2595 { 2596 struct regmap *regmap = nau8825->regmap; 2597 2598 /* Close clock when jack type detection at manual mode */ 2599 nau8825_configure_sysclk(nau8825, NAU8825_CLK_DIS, 0); 2600 2601 /* Clear all interruption status */ 2602 nau8825_int_status_clear_all(regmap); 2603 2604 /* Enable both insertion and ejection interruptions, and then 2605 * bypass de-bounce circuit. 2606 */ 2607 regmap_update_bits(regmap, NAU8825_REG_INTERRUPT_MASK, 2608 NAU8825_IRQ_OUTPUT_EN | NAU8825_IRQ_HEADSET_COMPLETE_EN | 2609 NAU8825_IRQ_EJECT_EN | NAU8825_IRQ_INSERT_EN, 2610 NAU8825_IRQ_OUTPUT_EN | NAU8825_IRQ_HEADSET_COMPLETE_EN); 2611 regmap_update_bits(regmap, NAU8825_REG_JACK_DET_CTRL, 2612 NAU8825_JACK_DET_DB_BYPASS, NAU8825_JACK_DET_DB_BYPASS); 2613 regmap_update_bits(regmap, NAU8825_REG_INTERRUPT_DIS_CTRL, 2614 NAU8825_IRQ_INSERT_DIS | NAU8825_IRQ_EJECT_DIS, 0); 2615 2616 return 0; 2617 } 2618 2619 static int nau8825_set_bias_level(struct snd_soc_component *component, 2620 enum snd_soc_bias_level level) 2621 { 2622 struct nau8825 *nau8825 = snd_soc_component_get_drvdata(component); 2623 int ret; 2624 2625 switch (level) { 2626 case SND_SOC_BIAS_ON: 2627 break; 2628 2629 case SND_SOC_BIAS_PREPARE: 2630 break; 2631 2632 case SND_SOC_BIAS_STANDBY: 2633 if (snd_soc_component_get_bias_level(component) == SND_SOC_BIAS_OFF) { 2634 if (nau8825->mclk_freq) { 2635 ret = clk_prepare_enable(nau8825->mclk); 2636 if (ret) { 2637 dev_err(nau8825->dev, "Unable to prepare component mclk\n"); 2638 return ret; 2639 } 2640 } 2641 /* Setup codec configuration after resume */ 2642 nau8825_resume_setup(nau8825); 2643 } 2644 break; 2645 2646 case SND_SOC_BIAS_OFF: 2647 /* Reset the configuration of jack type for detection */ 2648 /* Detach 2kOhm Resistors from MICBIAS to MICGND1/2 */ 2649 regmap_update_bits(nau8825->regmap, NAU8825_REG_MIC_BIAS, 2650 NAU8825_MICBIAS_JKSLV | NAU8825_MICBIAS_JKR2, 0); 2651 /* ground HPL/HPR, MICGRND1/2 */ 2652 regmap_update_bits(nau8825->regmap, 2653 NAU8825_REG_HSD_CTRL, 0xf, 0xf); 2654 /* Cancel and reset cross talk detection funciton */ 2655 nau8825_xtalk_cancel(nau8825); 2656 /* Turn off all interruptions before system shutdown. Keep the 2657 * interruption quiet before resume setup completes. 2658 */ 2659 regmap_write(nau8825->regmap, 2660 NAU8825_REG_INTERRUPT_DIS_CTRL, 0xffff); 2661 /* Disable ADC needed for interruptions at audo mode */ 2662 regmap_update_bits(nau8825->regmap, NAU8825_REG_ENA_CTRL, 2663 NAU8825_ENABLE_ADC, 0); 2664 if (nau8825->mclk_freq) 2665 clk_disable_unprepare(nau8825->mclk); 2666 break; 2667 } 2668 return 0; 2669 } 2670 2671 static int __maybe_unused nau8825_suspend(struct snd_soc_component *component) 2672 { 2673 struct nau8825 *nau8825 = snd_soc_component_get_drvdata(component); 2674 2675 disable_irq(nau8825->irq); 2676 snd_soc_component_force_bias_level(component, SND_SOC_BIAS_OFF); 2677 /* Power down codec power; don't suppoet button wakeup */ 2678 snd_soc_dapm_disable_pin(nau8825->dapm, "SAR"); 2679 snd_soc_dapm_disable_pin(nau8825->dapm, "MICBIAS"); 2680 snd_soc_dapm_sync(nau8825->dapm); 2681 regcache_cache_only(nau8825->regmap, true); 2682 regcache_mark_dirty(nau8825->regmap); 2683 2684 return 0; 2685 } 2686 2687 static int __maybe_unused nau8825_resume(struct snd_soc_component *component) 2688 { 2689 struct nau8825 *nau8825 = snd_soc_component_get_drvdata(component); 2690 int ret; 2691 2692 regcache_cache_only(nau8825->regmap, false); 2693 regcache_sync(nau8825->regmap); 2694 nau8825->xtalk_protect = true; 2695 ret = nau8825_sema_acquire(nau8825, 0); 2696 if (ret) 2697 nau8825->xtalk_protect = false; 2698 enable_irq(nau8825->irq); 2699 2700 return 0; 2701 } 2702 2703 static int nau8825_set_jack(struct snd_soc_component *component, 2704 struct snd_soc_jack *jack, void *data) 2705 { 2706 return nau8825_enable_jack_detect(component, jack); 2707 } 2708 2709 static const struct snd_soc_component_driver nau8825_component_driver = { 2710 .probe = nau8825_component_probe, 2711 .remove = nau8825_component_remove, 2712 .set_sysclk = nau8825_set_sysclk, 2713 .set_pll = nau8825_set_pll, 2714 .set_bias_level = nau8825_set_bias_level, 2715 .suspend = nau8825_suspend, 2716 .resume = nau8825_resume, 2717 .controls = nau8825_controls, 2718 .num_controls = ARRAY_SIZE(nau8825_controls), 2719 .dapm_widgets = nau8825_dapm_widgets, 2720 .num_dapm_widgets = ARRAY_SIZE(nau8825_dapm_widgets), 2721 .dapm_routes = nau8825_dapm_routes, 2722 .num_dapm_routes = ARRAY_SIZE(nau8825_dapm_routes), 2723 .set_jack = nau8825_set_jack, 2724 .suspend_bias_off = 1, 2725 .idle_bias_on = 1, 2726 .use_pmdown_time = 1, 2727 .endianness = 1, 2728 }; 2729 2730 static void nau8825_reset_chip(struct regmap *regmap) 2731 { 2732 regmap_write(regmap, NAU8825_REG_RESET, 0x00); 2733 regmap_write(regmap, NAU8825_REG_RESET, 0x00); 2734 } 2735 2736 static void nau8825_print_device_properties(struct nau8825 *nau8825) 2737 { 2738 int i; 2739 struct device *dev = nau8825->dev; 2740 2741 dev_dbg(dev, "jkdet-enable: %d\n", nau8825->jkdet_enable); 2742 dev_dbg(dev, "jkdet-pull-enable: %d\n", nau8825->jkdet_pull_enable); 2743 dev_dbg(dev, "jkdet-pull-up: %d\n", nau8825->jkdet_pull_up); 2744 dev_dbg(dev, "jkdet-polarity: %d\n", nau8825->jkdet_polarity); 2745 dev_dbg(dev, "micbias-voltage: %d\n", nau8825->micbias_voltage); 2746 dev_dbg(dev, "vref-impedance: %d\n", nau8825->vref_impedance); 2747 2748 dev_dbg(dev, "sar-threshold-num: %d\n", nau8825->sar_threshold_num); 2749 for (i = 0; i < nau8825->sar_threshold_num; i++) 2750 dev_dbg(dev, "sar-threshold[%d]=%d\n", i, 2751 nau8825->sar_threshold[i]); 2752 2753 dev_dbg(dev, "sar-hysteresis: %d\n", nau8825->sar_hysteresis); 2754 dev_dbg(dev, "sar-voltage: %d\n", nau8825->sar_voltage); 2755 dev_dbg(dev, "sar-compare-time: %d\n", nau8825->sar_compare_time); 2756 dev_dbg(dev, "sar-sampling-time: %d\n", nau8825->sar_sampling_time); 2757 dev_dbg(dev, "short-key-debounce: %d\n", nau8825->key_debounce); 2758 dev_dbg(dev, "jack-insert-debounce: %d\n", 2759 nau8825->jack_insert_debounce); 2760 dev_dbg(dev, "jack-eject-debounce: %d\n", 2761 nau8825->jack_eject_debounce); 2762 dev_dbg(dev, "crosstalk-enable: %d\n", 2763 nau8825->xtalk_enable); 2764 dev_dbg(dev, "adcout-drive-strong: %d\n", nau8825->adcout_ds); 2765 dev_dbg(dev, "adc-delay-ms: %d\n", nau8825->adc_delay); 2766 } 2767 2768 static int nau8825_read_device_properties(struct device *dev, 2769 struct nau8825 *nau8825) { 2770 int ret; 2771 2772 nau8825->jkdet_enable = device_property_read_bool(dev, 2773 "nuvoton,jkdet-enable"); 2774 nau8825->jkdet_pull_enable = device_property_read_bool(dev, 2775 "nuvoton,jkdet-pull-enable"); 2776 nau8825->jkdet_pull_up = device_property_read_bool(dev, 2777 "nuvoton,jkdet-pull-up"); 2778 ret = device_property_read_u32(dev, "nuvoton,jkdet-polarity", 2779 &nau8825->jkdet_polarity); 2780 if (ret) 2781 nau8825->jkdet_polarity = 1; 2782 ret = device_property_read_u32(dev, "nuvoton,micbias-voltage", 2783 &nau8825->micbias_voltage); 2784 if (ret) 2785 nau8825->micbias_voltage = 6; 2786 ret = device_property_read_u32(dev, "nuvoton,vref-impedance", 2787 &nau8825->vref_impedance); 2788 if (ret) 2789 nau8825->vref_impedance = 2; 2790 ret = device_property_read_u32(dev, "nuvoton,sar-threshold-num", 2791 &nau8825->sar_threshold_num); 2792 if (ret) 2793 nau8825->sar_threshold_num = 4; 2794 ret = device_property_read_u32_array(dev, "nuvoton,sar-threshold", 2795 nau8825->sar_threshold, nau8825->sar_threshold_num); 2796 if (ret) { 2797 nau8825->sar_threshold[0] = 0x08; 2798 nau8825->sar_threshold[1] = 0x12; 2799 nau8825->sar_threshold[2] = 0x26; 2800 nau8825->sar_threshold[3] = 0x73; 2801 } 2802 ret = device_property_read_u32(dev, "nuvoton,sar-hysteresis", 2803 &nau8825->sar_hysteresis); 2804 if (ret) 2805 nau8825->sar_hysteresis = 0; 2806 ret = device_property_read_u32(dev, "nuvoton,sar-voltage", 2807 &nau8825->sar_voltage); 2808 if (ret) 2809 nau8825->sar_voltage = 6; 2810 ret = device_property_read_u32(dev, "nuvoton,sar-compare-time", 2811 &nau8825->sar_compare_time); 2812 if (ret) 2813 nau8825->sar_compare_time = 1; 2814 ret = device_property_read_u32(dev, "nuvoton,sar-sampling-time", 2815 &nau8825->sar_sampling_time); 2816 if (ret) 2817 nau8825->sar_sampling_time = 1; 2818 ret = device_property_read_u32(dev, "nuvoton,short-key-debounce", 2819 &nau8825->key_debounce); 2820 if (ret) 2821 nau8825->key_debounce = 3; 2822 ret = device_property_read_u32(dev, "nuvoton,jack-insert-debounce", 2823 &nau8825->jack_insert_debounce); 2824 if (ret) 2825 nau8825->jack_insert_debounce = 7; 2826 ret = device_property_read_u32(dev, "nuvoton,jack-eject-debounce", 2827 &nau8825->jack_eject_debounce); 2828 if (ret) 2829 nau8825->jack_eject_debounce = 0; 2830 nau8825->xtalk_enable = device_property_read_bool(dev, 2831 "nuvoton,crosstalk-enable"); 2832 nau8825->adcout_ds = device_property_read_bool(dev, "nuvoton,adcout-drive-strong"); 2833 ret = device_property_read_u32(dev, "nuvoton,adc-delay-ms", &nau8825->adc_delay); 2834 if (ret) 2835 nau8825->adc_delay = 125; 2836 if (nau8825->adc_delay < 125 || nau8825->adc_delay > 500) 2837 dev_warn(dev, "Please set the suitable delay time!\n"); 2838 2839 nau8825->mclk = devm_clk_get(dev, "mclk"); 2840 if (PTR_ERR(nau8825->mclk) == -EPROBE_DEFER) { 2841 return -EPROBE_DEFER; 2842 } else if (PTR_ERR(nau8825->mclk) == -ENOENT) { 2843 /* The MCLK is managed externally or not used at all */ 2844 nau8825->mclk = NULL; 2845 dev_info(dev, "No 'mclk' clock found, assume MCLK is managed externally"); 2846 } else if (IS_ERR(nau8825->mclk)) { 2847 return -EINVAL; 2848 } 2849 2850 return 0; 2851 } 2852 2853 static int nau8825_setup_irq(struct nau8825 *nau8825) 2854 { 2855 int ret; 2856 2857 ret = devm_request_threaded_irq(nau8825->dev, nau8825->irq, NULL, 2858 nau8825_interrupt, IRQF_TRIGGER_LOW | IRQF_ONESHOT, 2859 "nau8825", nau8825); 2860 2861 if (ret) { 2862 dev_err(nau8825->dev, "Cannot request irq %d (%d)\n", 2863 nau8825->irq, ret); 2864 return ret; 2865 } 2866 2867 return 0; 2868 } 2869 2870 static int nau8825_i2c_probe(struct i2c_client *i2c) 2871 { 2872 struct device *dev = &i2c->dev; 2873 struct nau8825 *nau8825 = dev_get_platdata(&i2c->dev); 2874 int ret, value; 2875 2876 if (!nau8825) { 2877 nau8825 = devm_kzalloc(dev, sizeof(*nau8825), GFP_KERNEL); 2878 if (!nau8825) 2879 return -ENOMEM; 2880 ret = nau8825_read_device_properties(dev, nau8825); 2881 if (ret) 2882 return ret; 2883 } 2884 2885 i2c_set_clientdata(i2c, nau8825); 2886 2887 nau8825->regmap = devm_regmap_init_i2c(i2c, &nau8825_regmap_config); 2888 if (IS_ERR(nau8825->regmap)) 2889 return PTR_ERR(nau8825->regmap); 2890 nau8825->dev = dev; 2891 nau8825->irq = i2c->irq; 2892 /* Initiate parameters, semaphore and work queue which are needed in 2893 * cross talk suppression measurment function. 2894 */ 2895 nau8825->xtalk_state = NAU8825_XTALK_DONE; 2896 nau8825->xtalk_protect = false; 2897 nau8825->xtalk_baktab_initialized = false; 2898 sema_init(&nau8825->xtalk_sem, 1); 2899 INIT_WORK(&nau8825->xtalk_work, nau8825_xtalk_work); 2900 2901 nau8825_print_device_properties(nau8825); 2902 2903 nau8825_reset_chip(nau8825->regmap); 2904 ret = regmap_read(nau8825->regmap, NAU8825_REG_I2C_DEVICE_ID, &value); 2905 if (ret < 0) { 2906 dev_err(dev, "Failed to read device id from the NAU8825: %d\n", 2907 ret); 2908 return ret; 2909 } 2910 nau8825->sw_id = value & NAU8825_SOFTWARE_ID_MASK; 2911 switch (nau8825->sw_id) { 2912 case NAU8825_SOFTWARE_ID_NAU8825: 2913 break; 2914 case NAU8825_SOFTWARE_ID_NAU8825C: 2915 ret = regmap_register_patch(nau8825->regmap, nau8825_regmap_patch, 2916 ARRAY_SIZE(nau8825_regmap_patch)); 2917 if (ret) { 2918 dev_err(dev, "Failed to register Rev C patch: %d\n", ret); 2919 return ret; 2920 } 2921 break; 2922 default: 2923 dev_err(dev, "Not a NAU8825 chip\n"); 2924 return -ENODEV; 2925 } 2926 2927 nau8825_init_regs(nau8825); 2928 2929 if (i2c->irq) 2930 nau8825_setup_irq(nau8825); 2931 2932 return devm_snd_soc_register_component(&i2c->dev, 2933 &nau8825_component_driver, 2934 &nau8825_dai, 1); 2935 } 2936 2937 static void nau8825_i2c_remove(struct i2c_client *client) 2938 {} 2939 2940 static const struct i2c_device_id nau8825_i2c_ids[] = { 2941 { "nau8825", 0 }, 2942 { } 2943 }; 2944 MODULE_DEVICE_TABLE(i2c, nau8825_i2c_ids); 2945 2946 #ifdef CONFIG_OF 2947 static const struct of_device_id nau8825_of_ids[] = { 2948 { .compatible = "nuvoton,nau8825", }, 2949 {} 2950 }; 2951 MODULE_DEVICE_TABLE(of, nau8825_of_ids); 2952 #endif 2953 2954 #ifdef CONFIG_ACPI 2955 static const struct acpi_device_id nau8825_acpi_match[] = { 2956 { "10508825", 0 }, 2957 {}, 2958 }; 2959 MODULE_DEVICE_TABLE(acpi, nau8825_acpi_match); 2960 #endif 2961 2962 static struct i2c_driver nau8825_driver = { 2963 .driver = { 2964 .name = "nau8825", 2965 .of_match_table = of_match_ptr(nau8825_of_ids), 2966 .acpi_match_table = ACPI_PTR(nau8825_acpi_match), 2967 }, 2968 .probe = nau8825_i2c_probe, 2969 .remove = nau8825_i2c_remove, 2970 .id_table = nau8825_i2c_ids, 2971 }; 2972 module_i2c_driver(nau8825_driver); 2973 2974 MODULE_DESCRIPTION("ASoC nau8825 driver"); 2975 MODULE_AUTHOR("Anatol Pomozov <anatol@chromium.org>"); 2976 MODULE_LICENSE("GPL"); 2977