1 // SPDX-License-Identifier: GPL-2.0-only 2 // 3 // nau8821.c -- Nuvoton NAU88L21 audio codec driver 4 // 5 // Copyright 2021 Nuvoton Technology Corp. 6 // Author: John Hsu <kchsu0@nuvoton.com> 7 // Co-author: Seven Lee <wtli@nuvoton.com> 8 // 9 10 #include <linux/acpi.h> 11 #include <linux/clk.h> 12 #include <linux/delay.h> 13 #include <linux/init.h> 14 #include <linux/i2c.h> 15 #include <linux/module.h> 16 #include <linux/math64.h> 17 #include <linux/regmap.h> 18 #include <linux/slab.h> 19 #include <sound/core.h> 20 #include <sound/initval.h> 21 #include <sound/jack.h> 22 #include <sound/pcm.h> 23 #include <sound/pcm_params.h> 24 #include <sound/soc.h> 25 #include <sound/tlv.h> 26 #include "nau8821.h" 27 28 #define NAU_FREF_MAX 13500000 29 #define NAU_FVCO_MAX 100000000 30 #define NAU_FVCO_MIN 90000000 31 32 /* the maximum frequency of CLK_ADC and CLK_DAC */ 33 #define CLK_DA_AD_MAX 6144000 34 35 static int nau8821_configure_sysclk(struct nau8821 *nau8821, 36 int clk_id, unsigned int freq); 37 38 struct nau8821_fll { 39 int mclk_src; 40 int ratio; 41 int fll_frac; 42 int fll_int; 43 int clk_ref_div; 44 }; 45 46 struct nau8821_fll_attr { 47 unsigned int param; 48 unsigned int val; 49 }; 50 51 /* scaling for mclk from sysclk_src output */ 52 static const struct nau8821_fll_attr mclk_src_scaling[] = { 53 { 1, 0x0 }, 54 { 2, 0x2 }, 55 { 4, 0x3 }, 56 { 8, 0x4 }, 57 { 16, 0x5 }, 58 { 32, 0x6 }, 59 { 3, 0x7 }, 60 { 6, 0xa }, 61 { 12, 0xb }, 62 { 24, 0xc }, 63 { 48, 0xd }, 64 { 96, 0xe }, 65 { 5, 0xf }, 66 }; 67 68 /* ratio for input clk freq */ 69 static const struct nau8821_fll_attr fll_ratio[] = { 70 { 512000, 0x01 }, 71 { 256000, 0x02 }, 72 { 128000, 0x04 }, 73 { 64000, 0x08 }, 74 { 32000, 0x10 }, 75 { 8000, 0x20 }, 76 { 4000, 0x40 }, 77 }; 78 79 static const struct nau8821_fll_attr fll_pre_scalar[] = { 80 { 0, 0x0 }, 81 { 1, 0x1 }, 82 { 2, 0x2 }, 83 { 3, 0x3 }, 84 }; 85 86 /* over sampling rate */ 87 struct nau8821_osr_attr { 88 unsigned int osr; 89 unsigned int clk_src; 90 }; 91 92 static const struct nau8821_osr_attr osr_dac_sel[] = { 93 { 64, 2 }, /* OSR 64, SRC 1/4 */ 94 { 256, 0 }, /* OSR 256, SRC 1 */ 95 { 128, 1 }, /* OSR 128, SRC 1/2 */ 96 { 0, 0 }, 97 { 32, 3 }, /* OSR 32, SRC 1/8 */ 98 }; 99 100 static const struct nau8821_osr_attr osr_adc_sel[] = { 101 { 32, 3 }, /* OSR 32, SRC 1/8 */ 102 { 64, 2 }, /* OSR 64, SRC 1/4 */ 103 { 128, 1 }, /* OSR 128, SRC 1/2 */ 104 { 256, 0 }, /* OSR 256, SRC 1 */ 105 }; 106 107 struct nau8821_dmic_speed { 108 unsigned int param; 109 unsigned int val; 110 }; 111 112 static const struct nau8821_dmic_speed dmic_speed_sel[] = { 113 { 0, 0x0 }, /*SPEED 1, SRC 1 */ 114 { 1, 0x1 }, /*SPEED 2, SRC 1/2 */ 115 { 2, 0x2 }, /*SPEED 4, SRC 1/4 */ 116 { 3, 0x3 }, /*SPEED 8, SRC 1/8 */ 117 }; 118 119 static const struct reg_default nau8821_reg_defaults[] = { 120 { NAU8821_R01_ENA_CTRL, 0x00ff }, 121 { NAU8821_R03_CLK_DIVIDER, 0x0050 }, 122 { NAU8821_R04_FLL1, 0x0 }, 123 { NAU8821_R05_FLL2, 0x00bc }, 124 { NAU8821_R06_FLL3, 0x0008 }, 125 { NAU8821_R07_FLL4, 0x0010 }, 126 { NAU8821_R08_FLL5, 0x4000 }, 127 { NAU8821_R09_FLL6, 0x6900 }, 128 { NAU8821_R0A_FLL7, 0x0031 }, 129 { NAU8821_R0B_FLL8, 0x26e9 }, 130 { NAU8821_R0D_JACK_DET_CTRL, 0x0 }, 131 { NAU8821_R0F_INTERRUPT_MASK, 0x0 }, 132 { NAU8821_R12_INTERRUPT_DIS_CTRL, 0xffff }, 133 { NAU8821_R13_DMIC_CTRL, 0x0 }, 134 { NAU8821_R1A_GPIO12_CTRL, 0x0 }, 135 { NAU8821_R1B_TDM_CTRL, 0x0 }, 136 { NAU8821_R1C_I2S_PCM_CTRL1, 0x000a }, 137 { NAU8821_R1D_I2S_PCM_CTRL2, 0x8010 }, 138 { NAU8821_R1E_LEFT_TIME_SLOT, 0x0 }, 139 { NAU8821_R1F_RIGHT_TIME_SLOT, 0x0 }, 140 { NAU8821_R21_BIQ0_COF1, 0x0 }, 141 { NAU8821_R22_BIQ0_COF2, 0x0 }, 142 { NAU8821_R23_BIQ0_COF3, 0x0 }, 143 { NAU8821_R24_BIQ0_COF4, 0x0 }, 144 { NAU8821_R25_BIQ0_COF5, 0x0 }, 145 { NAU8821_R26_BIQ0_COF6, 0x0 }, 146 { NAU8821_R27_BIQ0_COF7, 0x0 }, 147 { NAU8821_R28_BIQ0_COF8, 0x0 }, 148 { NAU8821_R29_BIQ0_COF9, 0x0 }, 149 { NAU8821_R2A_BIQ0_COF10, 0x0 }, 150 { NAU8821_R2B_ADC_RATE, 0x0002 }, 151 { NAU8821_R2C_DAC_CTRL1, 0x0082 }, 152 { NAU8821_R2D_DAC_CTRL2, 0x0 }, 153 { NAU8821_R2F_DAC_DGAIN_CTRL, 0x0 }, 154 { NAU8821_R30_ADC_DGAIN_CTRL, 0x0 }, 155 { NAU8821_R31_MUTE_CTRL, 0x0 }, 156 { NAU8821_R32_HSVOL_CTRL, 0x0 }, 157 { NAU8821_R34_DACR_CTRL, 0xcfcf }, 158 { NAU8821_R35_ADC_DGAIN_CTRL1, 0xcfcf }, 159 { NAU8821_R36_ADC_DRC_KNEE_IP12, 0x1486 }, 160 { NAU8821_R37_ADC_DRC_KNEE_IP34, 0x0f12 }, 161 { NAU8821_R38_ADC_DRC_SLOPES, 0x25ff }, 162 { NAU8821_R39_ADC_DRC_ATKDCY, 0x3457 }, 163 { NAU8821_R3A_DAC_DRC_KNEE_IP12, 0x1486 }, 164 { NAU8821_R3B_DAC_DRC_KNEE_IP34, 0x0f12 }, 165 { NAU8821_R3C_DAC_DRC_SLOPES, 0x25f9 }, 166 { NAU8821_R3D_DAC_DRC_ATKDCY, 0x3457 }, 167 { NAU8821_R41_BIQ1_COF1, 0x0 }, 168 { NAU8821_R42_BIQ1_COF2, 0x0 }, 169 { NAU8821_R43_BIQ1_COF3, 0x0 }, 170 { NAU8821_R44_BIQ1_COF4, 0x0 }, 171 { NAU8821_R45_BIQ1_COF5, 0x0 }, 172 { NAU8821_R46_BIQ1_COF6, 0x0 }, 173 { NAU8821_R47_BIQ1_COF7, 0x0 }, 174 { NAU8821_R48_BIQ1_COF8, 0x0 }, 175 { NAU8821_R49_BIQ1_COF9, 0x0 }, 176 { NAU8821_R4A_BIQ1_COF10, 0x0 }, 177 { NAU8821_R4B_CLASSG_CTRL, 0x0 }, 178 { NAU8821_R4C_IMM_MODE_CTRL, 0x0 }, 179 { NAU8821_R4D_IMM_RMS_L, 0x0 }, 180 { NAU8821_R53_OTPDOUT_1, 0xaad8 }, 181 { NAU8821_R54_OTPDOUT_2, 0x0002 }, 182 { NAU8821_R55_MISC_CTRL, 0x0 }, 183 { NAU8821_R66_BIAS_ADJ, 0x0 }, 184 { NAU8821_R68_TRIM_SETTINGS, 0x0 }, 185 { NAU8821_R69_ANALOG_CONTROL_1, 0x0 }, 186 { NAU8821_R6A_ANALOG_CONTROL_2, 0x0 }, 187 { NAU8821_R6B_PGA_MUTE, 0x0 }, 188 { NAU8821_R71_ANALOG_ADC_1, 0x0011 }, 189 { NAU8821_R72_ANALOG_ADC_2, 0x0020 }, 190 { NAU8821_R73_RDAC, 0x0008 }, 191 { NAU8821_R74_MIC_BIAS, 0x0006 }, 192 { NAU8821_R76_BOOST, 0x0 }, 193 { NAU8821_R77_FEPGA, 0x0 }, 194 { NAU8821_R7E_PGA_GAIN, 0x0 }, 195 { NAU8821_R7F_POWER_UP_CONTROL, 0x0 }, 196 { NAU8821_R80_CHARGE_PUMP, 0x0 }, 197 }; 198 199 static bool nau8821_readable_reg(struct device *dev, unsigned int reg) 200 { 201 switch (reg) { 202 case NAU8821_R00_RESET ... NAU8821_R01_ENA_CTRL: 203 case NAU8821_R03_CLK_DIVIDER ... NAU8821_R0B_FLL8: 204 case NAU8821_R0D_JACK_DET_CTRL: 205 case NAU8821_R0F_INTERRUPT_MASK ... NAU8821_R13_DMIC_CTRL: 206 case NAU8821_R1A_GPIO12_CTRL ... NAU8821_R1F_RIGHT_TIME_SLOT: 207 case NAU8821_R21_BIQ0_COF1 ... NAU8821_R2D_DAC_CTRL2: 208 case NAU8821_R2F_DAC_DGAIN_CTRL ... NAU8821_R32_HSVOL_CTRL: 209 case NAU8821_R34_DACR_CTRL ... NAU8821_R3D_DAC_DRC_ATKDCY: 210 case NAU8821_R41_BIQ1_COF1 ... NAU8821_R4F_FUSE_CTRL3: 211 case NAU8821_R51_FUSE_CTRL1: 212 case NAU8821_R53_OTPDOUT_1 ... NAU8821_R55_MISC_CTRL: 213 case NAU8821_R58_I2C_DEVICE_ID ... NAU8821_R5A_SOFTWARE_RST: 214 case NAU8821_R66_BIAS_ADJ: 215 case NAU8821_R68_TRIM_SETTINGS ... NAU8821_R6B_PGA_MUTE: 216 case NAU8821_R71_ANALOG_ADC_1 ... NAU8821_R74_MIC_BIAS: 217 case NAU8821_R76_BOOST ... NAU8821_R77_FEPGA: 218 case NAU8821_R7E_PGA_GAIN ... NAU8821_R82_GENERAL_STATUS: 219 return true; 220 default: 221 return false; 222 } 223 } 224 225 static bool nau8821_writeable_reg(struct device *dev, unsigned int reg) 226 { 227 switch (reg) { 228 case NAU8821_R00_RESET ... NAU8821_R01_ENA_CTRL: 229 case NAU8821_R03_CLK_DIVIDER ... NAU8821_R0B_FLL8: 230 case NAU8821_R0D_JACK_DET_CTRL: 231 case NAU8821_R0F_INTERRUPT_MASK: 232 case NAU8821_R11_INT_CLR_KEY_STATUS ... NAU8821_R13_DMIC_CTRL: 233 case NAU8821_R1A_GPIO12_CTRL ... NAU8821_R1F_RIGHT_TIME_SLOT: 234 case NAU8821_R21_BIQ0_COF1 ... NAU8821_R2D_DAC_CTRL2: 235 case NAU8821_R2F_DAC_DGAIN_CTRL ... NAU8821_R32_HSVOL_CTRL: 236 case NAU8821_R34_DACR_CTRL ... NAU8821_R3D_DAC_DRC_ATKDCY: 237 case NAU8821_R41_BIQ1_COF1 ... NAU8821_R4C_IMM_MODE_CTRL: 238 case NAU8821_R4E_FUSE_CTRL2 ... NAU8821_R4F_FUSE_CTRL3: 239 case NAU8821_R51_FUSE_CTRL1: 240 case NAU8821_R55_MISC_CTRL: 241 case NAU8821_R5A_SOFTWARE_RST: 242 case NAU8821_R66_BIAS_ADJ: 243 case NAU8821_R68_TRIM_SETTINGS ... NAU8821_R6B_PGA_MUTE: 244 case NAU8821_R71_ANALOG_ADC_1 ... NAU8821_R74_MIC_BIAS: 245 case NAU8821_R76_BOOST ... NAU8821_R77_FEPGA: 246 case NAU8821_R7E_PGA_GAIN ... NAU8821_R80_CHARGE_PUMP: 247 return true; 248 default: 249 return false; 250 } 251 } 252 253 static bool nau8821_volatile_reg(struct device *dev, unsigned int reg) 254 { 255 switch (reg) { 256 case NAU8821_R00_RESET: 257 case NAU8821_R10_IRQ_STATUS ... NAU8821_R11_INT_CLR_KEY_STATUS: 258 case NAU8821_R21_BIQ0_COF1 ... NAU8821_R2A_BIQ0_COF10: 259 case NAU8821_R41_BIQ1_COF1 ... NAU8821_R4A_BIQ1_COF10: 260 case NAU8821_R4D_IMM_RMS_L: 261 case NAU8821_R53_OTPDOUT_1 ... NAU8821_R54_OTPDOUT_2: 262 case NAU8821_R58_I2C_DEVICE_ID ... NAU8821_R5A_SOFTWARE_RST: 263 case NAU8821_R81_CHARGE_PUMP_INPUT_READ ... NAU8821_R82_GENERAL_STATUS: 264 return true; 265 default: 266 return false; 267 } 268 } 269 270 static int nau8821_biq_coeff_get(struct snd_kcontrol *kcontrol, 271 struct snd_ctl_elem_value *ucontrol) 272 { 273 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol); 274 struct soc_bytes_ext *params = (void *)kcontrol->private_value; 275 276 if (!component->regmap) 277 return -EINVAL; 278 279 regmap_raw_read(component->regmap, NAU8821_R21_BIQ0_COF1, 280 ucontrol->value.bytes.data, params->max); 281 282 return 0; 283 } 284 285 static int nau8821_biq_coeff_put(struct snd_kcontrol *kcontrol, 286 struct snd_ctl_elem_value *ucontrol) 287 { 288 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol); 289 struct soc_bytes_ext *params = (void *)kcontrol->private_value; 290 void *data; 291 292 if (!component->regmap) 293 return -EINVAL; 294 295 data = kmemdup(ucontrol->value.bytes.data, 296 params->max, GFP_KERNEL | GFP_DMA); 297 if (!data) 298 return -ENOMEM; 299 300 regmap_raw_write(component->regmap, NAU8821_R21_BIQ0_COF1, 301 data, params->max); 302 303 kfree(data); 304 305 return 0; 306 } 307 308 static const char * const nau8821_adc_decimation[] = { 309 "32", "64", "128", "256" }; 310 311 static const struct soc_enum nau8821_adc_decimation_enum = 312 SOC_ENUM_SINGLE(NAU8821_R2B_ADC_RATE, NAU8821_ADC_SYNC_DOWN_SFT, 313 ARRAY_SIZE(nau8821_adc_decimation), nau8821_adc_decimation); 314 315 static const char * const nau8821_dac_oversampl[] = { 316 "64", "256", "128", "", "32" }; 317 318 static const struct soc_enum nau8821_dac_oversampl_enum = 319 SOC_ENUM_SINGLE(NAU8821_R2C_DAC_CTRL1, NAU8821_DAC_OVERSAMPLE_SFT, 320 ARRAY_SIZE(nau8821_dac_oversampl), nau8821_dac_oversampl); 321 322 static const DECLARE_TLV_DB_MINMAX_MUTE(adc_vol_tlv, -6600, 2400); 323 static const DECLARE_TLV_DB_MINMAX_MUTE(sidetone_vol_tlv, -4200, 0); 324 static const DECLARE_TLV_DB_MINMAX(hp_vol_tlv, -900, 0); 325 static const DECLARE_TLV_DB_SCALE(playback_vol_tlv, -6600, 50, 1); 326 static const DECLARE_TLV_DB_MINMAX(fepga_gain_tlv, -100, 3600); 327 static const DECLARE_TLV_DB_MINMAX_MUTE(crosstalk_vol_tlv, -7000, 2400); 328 329 static const struct snd_kcontrol_new nau8821_controls[] = { 330 SOC_DOUBLE_TLV("Mic Volume", NAU8821_R35_ADC_DGAIN_CTRL1, 331 NAU8821_ADCL_CH_VOL_SFT, NAU8821_ADCR_CH_VOL_SFT, 332 0xff, 0, adc_vol_tlv), 333 SOC_DOUBLE_TLV("Headphone Bypass Volume", NAU8821_R30_ADC_DGAIN_CTRL, 334 12, 8, 0x0f, 0, sidetone_vol_tlv), 335 SOC_DOUBLE_TLV("Headphone Volume", NAU8821_R32_HSVOL_CTRL, 336 NAU8821_HPL_VOL_SFT, NAU8821_HPR_VOL_SFT, 0x3, 1, hp_vol_tlv), 337 SOC_DOUBLE_TLV("Digital Playback Volume", NAU8821_R34_DACR_CTRL, 338 NAU8821_DACL_CH_VOL_SFT, NAU8821_DACR_CH_VOL_SFT, 339 0xcf, 0, playback_vol_tlv), 340 SOC_DOUBLE_TLV("Frontend PGA Volume", NAU8821_R7E_PGA_GAIN, 341 NAU8821_PGA_GAIN_L_SFT, NAU8821_PGA_GAIN_R_SFT, 342 37, 0, fepga_gain_tlv), 343 SOC_DOUBLE_TLV("Headphone Crosstalk Volume", 344 NAU8821_R2F_DAC_DGAIN_CTRL, 345 0, 8, 0xff, 0, crosstalk_vol_tlv), 346 347 SOC_ENUM("ADC Decimation Rate", nau8821_adc_decimation_enum), 348 SOC_ENUM("DAC Oversampling Rate", nau8821_dac_oversampl_enum), 349 SND_SOC_BYTES_EXT("BIQ Coefficients", 20, 350 nau8821_biq_coeff_get, nau8821_biq_coeff_put), 351 SOC_SINGLE("ADC Phase Switch", NAU8821_R1B_TDM_CTRL, 352 NAU8821_ADCPHS_SFT, 1, 0), 353 }; 354 355 static const struct snd_kcontrol_new nau8821_dmic_mode_switch = 356 SOC_DAPM_SINGLE("Switch", NAU8821_R13_DMIC_CTRL, 357 NAU8821_DMIC_EN_SFT, 1, 0); 358 359 static int dmic_clock_control(struct snd_soc_dapm_widget *w, 360 struct snd_kcontrol *k, int event) 361 { 362 struct snd_soc_component *component = 363 snd_soc_dapm_to_component(w->dapm); 364 struct nau8821 *nau8821 = snd_soc_component_get_drvdata(component); 365 int i, speed_selection = -1, clk_adc_src, clk_adc; 366 unsigned int clk_divider_r03; 367 368 /* The DMIC clock is gotten from adc clock divided by 369 * CLK_DMIC_SRC (1, 2, 4, 8). The clock has to be equal or 370 * less than nau8821->dmic_clk_threshold. 371 */ 372 regmap_read(nau8821->regmap, NAU8821_R03_CLK_DIVIDER, 373 &clk_divider_r03); 374 clk_adc_src = (clk_divider_r03 & NAU8821_CLK_ADC_SRC_MASK) 375 >> NAU8821_CLK_ADC_SRC_SFT; 376 clk_adc = (nau8821->fs * 256) >> clk_adc_src; 377 378 for (i = 0 ; i < 4 ; i++) 379 if ((clk_adc >> dmic_speed_sel[i].param) <= 380 nau8821->dmic_clk_threshold) { 381 speed_selection = dmic_speed_sel[i].val; 382 break; 383 } 384 if (i == 4) 385 return -EINVAL; 386 387 dev_dbg(nau8821->dev, 388 "clk_adc=%d, dmic_clk_threshold = %d, param=%d, val = %d\n", 389 clk_adc, nau8821->dmic_clk_threshold, 390 dmic_speed_sel[i].param, dmic_speed_sel[i].val); 391 regmap_update_bits(nau8821->regmap, NAU8821_R13_DMIC_CTRL, 392 NAU8821_DMIC_SRC_MASK, 393 (speed_selection << NAU8821_DMIC_SRC_SFT)); 394 395 return 0; 396 } 397 398 static int nau8821_left_adc_event(struct snd_soc_dapm_widget *w, 399 struct snd_kcontrol *kcontrol, int event) 400 { 401 struct snd_soc_component *component = 402 snd_soc_dapm_to_component(w->dapm); 403 struct nau8821 *nau8821 = snd_soc_component_get_drvdata(component); 404 405 switch (event) { 406 case SND_SOC_DAPM_POST_PMU: 407 msleep(125); 408 regmap_update_bits(nau8821->regmap, NAU8821_R01_ENA_CTRL, 409 NAU8821_EN_ADCL, NAU8821_EN_ADCL); 410 break; 411 case SND_SOC_DAPM_POST_PMD: 412 regmap_update_bits(nau8821->regmap, 413 NAU8821_R01_ENA_CTRL, NAU8821_EN_ADCL, 0); 414 break; 415 default: 416 return -EINVAL; 417 } 418 419 return 0; 420 } 421 422 static int nau8821_right_adc_event(struct snd_soc_dapm_widget *w, 423 struct snd_kcontrol *kcontrol, int event) 424 { 425 struct snd_soc_component *component = 426 snd_soc_dapm_to_component(w->dapm); 427 struct nau8821 *nau8821 = snd_soc_component_get_drvdata(component); 428 429 switch (event) { 430 case SND_SOC_DAPM_POST_PMU: 431 msleep(125); 432 regmap_update_bits(nau8821->regmap, NAU8821_R01_ENA_CTRL, 433 NAU8821_EN_ADCR, NAU8821_EN_ADCR); 434 break; 435 case SND_SOC_DAPM_POST_PMD: 436 regmap_update_bits(nau8821->regmap, 437 NAU8821_R01_ENA_CTRL, NAU8821_EN_ADCR, 0); 438 break; 439 default: 440 return -EINVAL; 441 } 442 443 return 0; 444 } 445 446 static int nau8821_pump_event(struct snd_soc_dapm_widget *w, 447 struct snd_kcontrol *kcontrol, int event) 448 { 449 struct snd_soc_component *component = 450 snd_soc_dapm_to_component(w->dapm); 451 struct nau8821 *nau8821 = 452 snd_soc_component_get_drvdata(component); 453 454 switch (event) { 455 case SND_SOC_DAPM_POST_PMU: 456 /* Prevent startup click by letting charge pump to ramp up */ 457 msleep(20); 458 regmap_update_bits(nau8821->regmap, NAU8821_R80_CHARGE_PUMP, 459 NAU8821_JAMNODCLOW, NAU8821_JAMNODCLOW); 460 break; 461 case SND_SOC_DAPM_PRE_PMD: 462 regmap_update_bits(nau8821->regmap, NAU8821_R80_CHARGE_PUMP, 463 NAU8821_JAMNODCLOW, 0); 464 break; 465 default: 466 return -EINVAL; 467 } 468 469 return 0; 470 } 471 472 static int nau8821_output_dac_event(struct snd_soc_dapm_widget *w, 473 struct snd_kcontrol *kcontrol, int event) 474 { 475 struct snd_soc_component *component = 476 snd_soc_dapm_to_component(w->dapm); 477 struct nau8821 *nau8821 = snd_soc_component_get_drvdata(component); 478 479 switch (event) { 480 case SND_SOC_DAPM_PRE_PMU: 481 /* Disables the TESTDAC to let DAC signal pass through. */ 482 regmap_update_bits(nau8821->regmap, NAU8821_R66_BIAS_ADJ, 483 NAU8821_BIAS_TESTDAC_EN, 0); 484 break; 485 case SND_SOC_DAPM_POST_PMD: 486 regmap_update_bits(nau8821->regmap, NAU8821_R66_BIAS_ADJ, 487 NAU8821_BIAS_TESTDAC_EN, NAU8821_BIAS_TESTDAC_EN); 488 break; 489 default: 490 return -EINVAL; 491 } 492 493 return 0; 494 } 495 496 static const struct snd_soc_dapm_widget nau8821_dapm_widgets[] = { 497 SND_SOC_DAPM_SUPPLY("MICBIAS", NAU8821_R74_MIC_BIAS, 498 NAU8821_MICBIAS_POWERUP_SFT, 0, NULL, 0), 499 SND_SOC_DAPM_SUPPLY("DMIC Clock", SND_SOC_NOPM, 0, 0, 500 dmic_clock_control, SND_SOC_DAPM_POST_PMU), 501 SND_SOC_DAPM_ADC("ADCL Power", NULL, NAU8821_R72_ANALOG_ADC_2, 502 NAU8821_POWERUP_ADCL_SFT, 0), 503 SND_SOC_DAPM_ADC("ADCR Power", NULL, NAU8821_R72_ANALOG_ADC_2, 504 NAU8821_POWERUP_ADCR_SFT, 0), 505 SND_SOC_DAPM_PGA_S("Frontend PGA L", 1, NAU8821_R7F_POWER_UP_CONTROL, 506 NAU8821_PUP_PGA_L_SFT, 0, NULL, 0), 507 SND_SOC_DAPM_PGA_S("Frontend PGA R", 1, NAU8821_R7F_POWER_UP_CONTROL, 508 NAU8821_PUP_PGA_R_SFT, 0, NULL, 0), 509 SND_SOC_DAPM_PGA_S("ADCL Digital path", 0, NAU8821_R01_ENA_CTRL, 510 NAU8821_EN_ADCL_SFT, 0, nau8821_left_adc_event, 511 SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_POST_PMD), 512 SND_SOC_DAPM_PGA_S("ADCR Digital path", 0, NAU8821_R01_ENA_CTRL, 513 NAU8821_EN_ADCR_SFT, 0, nau8821_right_adc_event, 514 SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_POST_PMD), 515 SND_SOC_DAPM_SWITCH("DMIC Enable", SND_SOC_NOPM, 516 0, 0, &nau8821_dmic_mode_switch), 517 SND_SOC_DAPM_AIF_OUT("AIFTX", "Capture", 0, NAU8821_R1D_I2S_PCM_CTRL2, 518 NAU8821_I2S_TRISTATE_SFT, 1), 519 SND_SOC_DAPM_AIF_IN("AIFRX", "Playback", 0, SND_SOC_NOPM, 0, 0), 520 521 SND_SOC_DAPM_PGA_S("ADACL", 2, NAU8821_R73_RDAC, 522 NAU8821_DACL_EN_SFT, 0, NULL, 0), 523 SND_SOC_DAPM_PGA_S("ADACR", 2, NAU8821_R73_RDAC, 524 NAU8821_DACR_EN_SFT, 0, NULL, 0), 525 SND_SOC_DAPM_PGA_S("ADACL Clock", 3, NAU8821_R73_RDAC, 526 NAU8821_DACL_CLK_EN_SFT, 0, NULL, 0), 527 SND_SOC_DAPM_PGA_S("ADACR Clock", 3, NAU8821_R73_RDAC, 528 NAU8821_DACR_CLK_EN_SFT, 0, NULL, 0), 529 SND_SOC_DAPM_DAC("DDACR", NULL, NAU8821_R01_ENA_CTRL, 530 NAU8821_EN_DACR_SFT, 0), 531 SND_SOC_DAPM_DAC("DDACL", NULL, NAU8821_R01_ENA_CTRL, 532 NAU8821_EN_DACL_SFT, 0), 533 SND_SOC_DAPM_PGA_S("HP amp L", 0, NAU8821_R4B_CLASSG_CTRL, 534 NAU8821_CLASSG_LDAC_EN_SFT, 0, NULL, 0), 535 SND_SOC_DAPM_PGA_S("HP amp R", 0, NAU8821_R4B_CLASSG_CTRL, 536 NAU8821_CLASSG_RDAC_EN_SFT, 0, NULL, 0), 537 SND_SOC_DAPM_PGA_S("Charge Pump", 1, NAU8821_R80_CHARGE_PUMP, 538 NAU8821_CHANRGE_PUMP_EN_SFT, 0, nau8821_pump_event, 539 SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD), 540 SND_SOC_DAPM_PGA_S("Output Driver R Stage 1", 4, 541 NAU8821_R7F_POWER_UP_CONTROL, 542 NAU8821_PUP_INTEG_R_SFT, 0, NULL, 0), 543 SND_SOC_DAPM_PGA_S("Output Driver L Stage 1", 4, 544 NAU8821_R7F_POWER_UP_CONTROL, 545 NAU8821_PUP_INTEG_L_SFT, 0, NULL, 0), 546 SND_SOC_DAPM_PGA_S("Output Driver R Stage 2", 5, 547 NAU8821_R7F_POWER_UP_CONTROL, 548 NAU8821_PUP_DRV_INSTG_R_SFT, 0, NULL, 0), 549 SND_SOC_DAPM_PGA_S("Output Driver L Stage 2", 5, 550 NAU8821_R7F_POWER_UP_CONTROL, 551 NAU8821_PUP_DRV_INSTG_L_SFT, 0, NULL, 0), 552 SND_SOC_DAPM_PGA_S("Output Driver R Stage 3", 6, 553 NAU8821_R7F_POWER_UP_CONTROL, 554 NAU8821_PUP_MAIN_DRV_R_SFT, 0, NULL, 0), 555 SND_SOC_DAPM_PGA_S("Output Driver L Stage 3", 6, 556 NAU8821_R7F_POWER_UP_CONTROL, 557 NAU8821_PUP_MAIN_DRV_L_SFT, 0, NULL, 0), 558 SND_SOC_DAPM_PGA_S("Output DACL", 7, 559 NAU8821_R80_CHARGE_PUMP, NAU8821_POWER_DOWN_DACL_SFT, 560 0, nau8821_output_dac_event, 561 SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD), 562 SND_SOC_DAPM_PGA_S("Output DACR", 7, 563 NAU8821_R80_CHARGE_PUMP, NAU8821_POWER_DOWN_DACR_SFT, 564 0, nau8821_output_dac_event, 565 SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD), 566 567 /* HPOL/R are ungrounded by disabling 16 Ohm pull-downs on playback */ 568 SND_SOC_DAPM_PGA_S("HPOL Pulldown", 8, 569 NAU8821_R0D_JACK_DET_CTRL, 570 NAU8821_SPKR_DWN1L_SFT, 0, NULL, 0), 571 SND_SOC_DAPM_PGA_S("HPOR Pulldown", 8, 572 NAU8821_R0D_JACK_DET_CTRL, 573 NAU8821_SPKR_DWN1R_SFT, 0, NULL, 0), 574 575 /* High current HPOL/R boost driver */ 576 SND_SOC_DAPM_PGA_S("HP Boost Driver", 9, 577 NAU8821_R76_BOOST, NAU8821_HP_BOOST_DIS_SFT, 1, NULL, 0), 578 SND_SOC_DAPM_PGA("Class G", NAU8821_R4B_CLASSG_CTRL, 579 NAU8821_CLASSG_EN_SFT, 0, NULL, 0), 580 581 SND_SOC_DAPM_INPUT("MICL"), 582 SND_SOC_DAPM_INPUT("MICR"), 583 SND_SOC_DAPM_INPUT("DMIC"), 584 SND_SOC_DAPM_OUTPUT("HPOL"), 585 SND_SOC_DAPM_OUTPUT("HPOR"), 586 }; 587 588 static const struct snd_soc_dapm_route nau8821_dapm_routes[] = { 589 {"DMIC Enable", "Switch", "DMIC"}, 590 {"DMIC Enable", NULL, "DMIC Clock"}, 591 592 {"Frontend PGA L", NULL, "MICL"}, 593 {"Frontend PGA R", NULL, "MICR"}, 594 {"Frontend PGA L", NULL, "MICBIAS"}, 595 {"Frontend PGA R", NULL, "MICBIAS"}, 596 597 {"ADCL Power", NULL, "Frontend PGA L"}, 598 {"ADCR Power", NULL, "Frontend PGA R"}, 599 600 {"ADCL Digital path", NULL, "ADCL Power"}, 601 {"ADCR Digital path", NULL, "ADCR Power"}, 602 {"ADCL Digital path", NULL, "DMIC Enable"}, 603 {"ADCR Digital path", NULL, "DMIC Enable"}, 604 605 {"AIFTX", NULL, "ADCL Digital path"}, 606 {"AIFTX", NULL, "ADCR Digital path"}, 607 608 {"DDACL", NULL, "AIFRX"}, 609 {"DDACR", NULL, "AIFRX"}, 610 611 {"HP amp L", NULL, "DDACL"}, 612 {"HP amp R", NULL, "DDACR"}, 613 614 {"Charge Pump", NULL, "HP amp L"}, 615 {"Charge Pump", NULL, "HP amp R"}, 616 617 {"ADACL", NULL, "Charge Pump"}, 618 {"ADACR", NULL, "Charge Pump"}, 619 {"ADACL Clock", NULL, "ADACL"}, 620 {"ADACR Clock", NULL, "ADACR"}, 621 622 {"Output Driver L Stage 1", NULL, "ADACL Clock"}, 623 {"Output Driver R Stage 1", NULL, "ADACR Clock"}, 624 {"Output Driver L Stage 2", NULL, "Output Driver L Stage 1"}, 625 {"Output Driver R Stage 2", NULL, "Output Driver R Stage 1"}, 626 {"Output Driver L Stage 3", NULL, "Output Driver L Stage 2"}, 627 {"Output Driver R Stage 3", NULL, "Output Driver R Stage 2"}, 628 {"Output DACL", NULL, "Output Driver L Stage 3"}, 629 {"Output DACR", NULL, "Output Driver R Stage 3"}, 630 631 {"HPOL Pulldown", NULL, "Output DACL"}, 632 {"HPOR Pulldown", NULL, "Output DACR"}, 633 {"HP Boost Driver", NULL, "HPOL Pulldown"}, 634 {"HP Boost Driver", NULL, "HPOR Pulldown"}, 635 636 {"Class G", NULL, "HP Boost Driver"}, 637 {"HPOL", NULL, "Class G"}, 638 {"HPOR", NULL, "Class G"}, 639 }; 640 641 static int nau8821_clock_check(struct nau8821 *nau8821, 642 int stream, int rate, int osr) 643 { 644 int osrate = 0; 645 646 if (stream == SNDRV_PCM_STREAM_PLAYBACK) { 647 if (osr >= ARRAY_SIZE(osr_dac_sel)) 648 return -EINVAL; 649 osrate = osr_dac_sel[osr].osr; 650 } else { 651 if (osr >= ARRAY_SIZE(osr_adc_sel)) 652 return -EINVAL; 653 osrate = osr_adc_sel[osr].osr; 654 } 655 656 if (!osrate || rate * osrate > CLK_DA_AD_MAX) { 657 dev_err(nau8821->dev, 658 "exceed the maximum frequency of CLK_ADC or CLK_DAC"); 659 return -EINVAL; 660 } 661 662 return 0; 663 } 664 665 static int nau8821_hw_params(struct snd_pcm_substream *substream, 666 struct snd_pcm_hw_params *params, struct snd_soc_dai *dai) 667 { 668 struct snd_soc_component *component = dai->component; 669 struct nau8821 *nau8821 = snd_soc_component_get_drvdata(component); 670 unsigned int val_len = 0, osr, ctrl_val, bclk_fs, clk_div; 671 672 nau8821->fs = params_rate(params); 673 /* CLK_DAC or CLK_ADC = OSR * FS 674 * DAC or ADC clock frequency is defined as Over Sampling Rate (OSR) 675 * multiplied by the audio sample rate (Fs). Note that the OSR and Fs 676 * values must be selected such that the maximum frequency is less 677 * than 6.144 MHz. 678 */ 679 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { 680 regmap_read(nau8821->regmap, NAU8821_R2C_DAC_CTRL1, &osr); 681 osr &= NAU8821_DAC_OVERSAMPLE_MASK; 682 if (nau8821_clock_check(nau8821, substream->stream, 683 nau8821->fs, osr)) { 684 return -EINVAL; 685 } 686 regmap_update_bits(nau8821->regmap, NAU8821_R03_CLK_DIVIDER, 687 NAU8821_CLK_DAC_SRC_MASK, 688 osr_dac_sel[osr].clk_src << NAU8821_CLK_DAC_SRC_SFT); 689 } else { 690 regmap_read(nau8821->regmap, NAU8821_R2B_ADC_RATE, &osr); 691 osr &= NAU8821_ADC_SYNC_DOWN_MASK; 692 if (nau8821_clock_check(nau8821, substream->stream, 693 nau8821->fs, osr)) { 694 return -EINVAL; 695 } 696 regmap_update_bits(nau8821->regmap, NAU8821_R03_CLK_DIVIDER, 697 NAU8821_CLK_ADC_SRC_MASK, 698 osr_adc_sel[osr].clk_src << NAU8821_CLK_ADC_SRC_SFT); 699 } 700 701 /* make BCLK and LRC divde configuration if the codec as master. */ 702 regmap_read(nau8821->regmap, NAU8821_R1D_I2S_PCM_CTRL2, &ctrl_val); 703 if (ctrl_val & NAU8821_I2S_MS_MASTER) { 704 /* get the bclk and fs ratio */ 705 bclk_fs = snd_soc_params_to_bclk(params) / nau8821->fs; 706 if (bclk_fs <= 32) 707 clk_div = 3; 708 else if (bclk_fs <= 64) 709 clk_div = 2; 710 else if (bclk_fs <= 128) 711 clk_div = 1; 712 else { 713 return -EINVAL; 714 } 715 regmap_update_bits(nau8821->regmap, NAU8821_R1D_I2S_PCM_CTRL2, 716 NAU8821_I2S_LRC_DIV_MASK | NAU8821_I2S_BLK_DIV_MASK, 717 (clk_div << NAU8821_I2S_LRC_DIV_SFT) | clk_div); 718 } 719 720 switch (params_width(params)) { 721 case 16: 722 val_len |= NAU8821_I2S_DL_16; 723 break; 724 case 20: 725 val_len |= NAU8821_I2S_DL_20; 726 break; 727 case 24: 728 val_len |= NAU8821_I2S_DL_24; 729 break; 730 case 32: 731 val_len |= NAU8821_I2S_DL_32; 732 break; 733 default: 734 return -EINVAL; 735 } 736 737 regmap_update_bits(nau8821->regmap, NAU8821_R1C_I2S_PCM_CTRL1, 738 NAU8821_I2S_DL_MASK, val_len); 739 740 return 0; 741 } 742 743 static int nau8821_set_dai_fmt(struct snd_soc_dai *codec_dai, unsigned int fmt) 744 { 745 struct snd_soc_component *component = codec_dai->component; 746 struct nau8821 *nau8821 = snd_soc_component_get_drvdata(component); 747 unsigned int ctrl1_val = 0, ctrl2_val = 0; 748 749 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { 750 case SND_SOC_DAIFMT_CBP_CFP: 751 ctrl2_val |= NAU8821_I2S_MS_MASTER; 752 break; 753 case SND_SOC_DAIFMT_CBC_CFC: 754 break; 755 default: 756 return -EINVAL; 757 } 758 759 switch (fmt & SND_SOC_DAIFMT_INV_MASK) { 760 case SND_SOC_DAIFMT_NB_NF: 761 break; 762 case SND_SOC_DAIFMT_IB_NF: 763 ctrl1_val |= NAU8821_I2S_BP_INV; 764 break; 765 default: 766 return -EINVAL; 767 } 768 769 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { 770 case SND_SOC_DAIFMT_I2S: 771 ctrl1_val |= NAU8821_I2S_DF_I2S; 772 break; 773 case SND_SOC_DAIFMT_LEFT_J: 774 ctrl1_val |= NAU8821_I2S_DF_LEFT; 775 break; 776 case SND_SOC_DAIFMT_RIGHT_J: 777 ctrl1_val |= NAU8821_I2S_DF_RIGTH; 778 break; 779 case SND_SOC_DAIFMT_DSP_A: 780 ctrl1_val |= NAU8821_I2S_DF_PCM_AB; 781 break; 782 case SND_SOC_DAIFMT_DSP_B: 783 ctrl1_val |= NAU8821_I2S_DF_PCM_AB; 784 ctrl1_val |= NAU8821_I2S_PCMB_EN; 785 break; 786 default: 787 return -EINVAL; 788 } 789 790 regmap_update_bits(nau8821->regmap, NAU8821_R1C_I2S_PCM_CTRL1, 791 NAU8821_I2S_DL_MASK | NAU8821_I2S_DF_MASK | 792 NAU8821_I2S_BP_MASK | NAU8821_I2S_PCMB_MASK, ctrl1_val); 793 regmap_update_bits(nau8821->regmap, NAU8821_R1D_I2S_PCM_CTRL2, 794 NAU8821_I2S_MS_MASK, ctrl2_val); 795 796 return 0; 797 } 798 799 static int nau8821_digital_mute(struct snd_soc_dai *dai, int mute, 800 int direction) 801 { 802 struct snd_soc_component *component = dai->component; 803 struct nau8821 *nau8821 = snd_soc_component_get_drvdata(component); 804 unsigned int val = 0; 805 806 if (mute) 807 val = NAU8821_DAC_SOFT_MUTE; 808 809 return regmap_update_bits(nau8821->regmap, 810 NAU8821_R31_MUTE_CTRL, NAU8821_DAC_SOFT_MUTE, val); 811 } 812 813 static const struct snd_soc_dai_ops nau8821_dai_ops = { 814 .hw_params = nau8821_hw_params, 815 .set_fmt = nau8821_set_dai_fmt, 816 .mute_stream = nau8821_digital_mute, 817 }; 818 819 #define NAU8821_RATES SNDRV_PCM_RATE_8000_192000 820 #define NAU8821_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE \ 821 | SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S32_LE) 822 823 static struct snd_soc_dai_driver nau8821_dai = { 824 .name = NUVOTON_CODEC_DAI, 825 .playback = { 826 .stream_name = "Playback", 827 .channels_min = 1, 828 .channels_max = 2, 829 .rates = NAU8821_RATES, 830 .formats = NAU8821_FORMATS, 831 }, 832 .capture = { 833 .stream_name = "Capture", 834 .channels_min = 1, 835 .channels_max = 2, 836 .rates = NAU8821_RATES, 837 .formats = NAU8821_FORMATS, 838 }, 839 .ops = &nau8821_dai_ops, 840 }; 841 842 843 static bool nau8821_is_jack_inserted(struct regmap *regmap) 844 { 845 bool active_high, is_high; 846 int status, jkdet; 847 848 regmap_read(regmap, NAU8821_R0D_JACK_DET_CTRL, &jkdet); 849 active_high = jkdet & NAU8821_JACK_POLARITY; 850 regmap_read(regmap, NAU8821_R82_GENERAL_STATUS, &status); 851 is_high = status & NAU8821_GPIO2_IN; 852 /* return jack connection status according to jack insertion logic 853 * active high or active low. 854 */ 855 return active_high == is_high; 856 } 857 858 static void nau8821_int_status_clear_all(struct regmap *regmap) 859 { 860 int active_irq, clear_irq, i; 861 862 /* Reset the intrruption status from rightmost bit if the corres- 863 * ponding irq event occurs. 864 */ 865 regmap_read(regmap, NAU8821_R10_IRQ_STATUS, &active_irq); 866 for (i = 0; i < NAU8821_REG_DATA_LEN; i++) { 867 clear_irq = (0x1 << i); 868 if (active_irq & clear_irq) 869 regmap_write(regmap, 870 NAU8821_R11_INT_CLR_KEY_STATUS, clear_irq); 871 } 872 } 873 874 static void nau8821_eject_jack(struct nau8821 *nau8821) 875 { 876 struct snd_soc_dapm_context *dapm = nau8821->dapm; 877 struct regmap *regmap = nau8821->regmap; 878 struct snd_soc_component *component = snd_soc_dapm_to_component(dapm); 879 880 /* Detach 2kOhm Resistors from MICBIAS to MICGND */ 881 regmap_update_bits(regmap, NAU8821_R74_MIC_BIAS, 882 NAU8821_MICBIAS_JKR2, 0); 883 /* HPL/HPR short to ground */ 884 regmap_update_bits(regmap, NAU8821_R0D_JACK_DET_CTRL, 885 NAU8821_SPKR_DWN1R | NAU8821_SPKR_DWN1L, 0); 886 snd_soc_component_disable_pin(component, "MICBIAS"); 887 snd_soc_dapm_sync(dapm); 888 889 /* Clear all interruption status */ 890 nau8821_int_status_clear_all(regmap); 891 892 /* Enable the insertion interruption, disable the ejection inter- 893 * ruption, and then bypass de-bounce circuit. 894 */ 895 regmap_update_bits(regmap, NAU8821_R12_INTERRUPT_DIS_CTRL, 896 NAU8821_IRQ_EJECT_DIS | NAU8821_IRQ_INSERT_DIS, 897 NAU8821_IRQ_EJECT_DIS); 898 /* Mask unneeded IRQs: 1 - disable, 0 - enable */ 899 regmap_update_bits(regmap, NAU8821_R0F_INTERRUPT_MASK, 900 NAU8821_IRQ_EJECT_EN | NAU8821_IRQ_INSERT_EN, 901 NAU8821_IRQ_EJECT_EN); 902 903 regmap_update_bits(regmap, NAU8821_R0D_JACK_DET_CTRL, 904 NAU8821_JACK_DET_DB_BYPASS, NAU8821_JACK_DET_DB_BYPASS); 905 906 /* Close clock for jack type detection at manual mode */ 907 if (dapm->bias_level < SND_SOC_BIAS_PREPARE) 908 nau8821_configure_sysclk(nau8821, NAU8821_CLK_DIS, 0); 909 910 /* Recover to normal channel input */ 911 regmap_update_bits(regmap, NAU8821_R2B_ADC_RATE, 912 NAU8821_ADC_R_SRC_EN, 0); 913 } 914 915 static void nau8821_jdet_work(struct work_struct *work) 916 { 917 struct nau8821 *nau8821 = 918 container_of(work, struct nau8821, jdet_work); 919 struct snd_soc_dapm_context *dapm = nau8821->dapm; 920 struct snd_soc_component *component = snd_soc_dapm_to_component(dapm); 921 struct regmap *regmap = nau8821->regmap; 922 int jack_status_reg, mic_detected, event = 0, event_mask = 0; 923 924 snd_soc_component_force_enable_pin(component, "MICBIAS"); 925 snd_soc_dapm_sync(dapm); 926 msleep(20); 927 928 regmap_read(regmap, NAU8821_R58_I2C_DEVICE_ID, &jack_status_reg); 929 mic_detected = !(jack_status_reg & NAU8821_KEYDET); 930 if (mic_detected) { 931 dev_dbg(nau8821->dev, "Headset connected\n"); 932 event |= SND_JACK_HEADSET; 933 934 /* 2kOhm Resistor from MICBIAS to MICGND1 */ 935 regmap_update_bits(regmap, NAU8821_R74_MIC_BIAS, 936 NAU8821_MICBIAS_JKR2, NAU8821_MICBIAS_JKR2); 937 /* Latch Right Channel Analog data 938 * input into the Right Channel Filter 939 */ 940 regmap_update_bits(regmap, NAU8821_R2B_ADC_RATE, 941 NAU8821_ADC_R_SRC_EN, NAU8821_ADC_R_SRC_EN); 942 } else { 943 dev_dbg(nau8821->dev, "Headphone connected\n"); 944 event |= SND_JACK_HEADPHONE; 945 snd_soc_component_disable_pin(component, "MICBIAS"); 946 snd_soc_dapm_sync(dapm); 947 } 948 event_mask |= SND_JACK_HEADSET; 949 snd_soc_jack_report(nau8821->jack, event, event_mask); 950 } 951 952 /* Enable interruptions with internal clock. */ 953 static void nau8821_setup_inserted_irq(struct nau8821 *nau8821) 954 { 955 struct regmap *regmap = nau8821->regmap; 956 957 /* Enable internal VCO needed for interruptions */ 958 if (nau8821->dapm->bias_level < SND_SOC_BIAS_PREPARE) 959 nau8821_configure_sysclk(nau8821, NAU8821_CLK_INTERNAL, 0); 960 961 /* Chip needs one FSCLK cycle in order to generate interruptions, 962 * as we cannot guarantee one will be provided by the system. Turning 963 * master mode on then off enables us to generate that FSCLK cycle 964 * with a minimum of contention on the clock bus. 965 */ 966 regmap_update_bits(regmap, NAU8821_R1D_I2S_PCM_CTRL2, 967 NAU8821_I2S_MS_MASK, NAU8821_I2S_MS_MASTER); 968 regmap_update_bits(regmap, NAU8821_R1D_I2S_PCM_CTRL2, 969 NAU8821_I2S_MS_MASK, NAU8821_I2S_MS_SLAVE); 970 971 /* Not bypass de-bounce circuit */ 972 regmap_update_bits(regmap, NAU8821_R0D_JACK_DET_CTRL, 973 NAU8821_JACK_DET_DB_BYPASS, 0); 974 975 regmap_update_bits(regmap, NAU8821_R0F_INTERRUPT_MASK, 976 NAU8821_IRQ_EJECT_EN, 0); 977 regmap_update_bits(regmap, NAU8821_R12_INTERRUPT_DIS_CTRL, 978 NAU8821_IRQ_EJECT_DIS, 0); 979 } 980 981 static irqreturn_t nau8821_interrupt(int irq, void *data) 982 { 983 struct nau8821 *nau8821 = (struct nau8821 *)data; 984 struct regmap *regmap = nau8821->regmap; 985 int active_irq, clear_irq = 0, event = 0, event_mask = 0; 986 987 if (regmap_read(regmap, NAU8821_R10_IRQ_STATUS, &active_irq)) { 988 dev_err(nau8821->dev, "failed to read irq status\n"); 989 return IRQ_NONE; 990 } 991 992 dev_dbg(nau8821->dev, "IRQ %d\n", active_irq); 993 994 if ((active_irq & NAU8821_JACK_EJECT_IRQ_MASK) == 995 NAU8821_JACK_EJECT_DETECTED) { 996 regmap_update_bits(regmap, NAU8821_R71_ANALOG_ADC_1, 997 NAU8821_MICDET_MASK, NAU8821_MICDET_DIS); 998 nau8821_eject_jack(nau8821); 999 event_mask |= SND_JACK_HEADSET; 1000 clear_irq = NAU8821_JACK_EJECT_IRQ_MASK; 1001 } else if ((active_irq & NAU8821_JACK_INSERT_IRQ_MASK) == 1002 NAU8821_JACK_INSERT_DETECTED) { 1003 regmap_update_bits(regmap, NAU8821_R71_ANALOG_ADC_1, 1004 NAU8821_MICDET_MASK, NAU8821_MICDET_EN); 1005 if (nau8821_is_jack_inserted(regmap)) { 1006 /* detect microphone and jack type */ 1007 cancel_work_sync(&nau8821->jdet_work); 1008 schedule_work(&nau8821->jdet_work); 1009 /* Turn off insertion interruption at manual mode */ 1010 regmap_update_bits(regmap, 1011 NAU8821_R12_INTERRUPT_DIS_CTRL, 1012 NAU8821_IRQ_INSERT_DIS, 1013 NAU8821_IRQ_INSERT_DIS); 1014 regmap_update_bits(regmap, 1015 NAU8821_R0F_INTERRUPT_MASK, 1016 NAU8821_IRQ_INSERT_EN, 1017 NAU8821_IRQ_INSERT_EN); 1018 nau8821_setup_inserted_irq(nau8821); 1019 } else { 1020 dev_warn(nau8821->dev, 1021 "Inserted IRQ fired but not connected\n"); 1022 nau8821_eject_jack(nau8821); 1023 } 1024 } 1025 1026 if (!clear_irq) 1027 clear_irq = active_irq; 1028 /* clears the rightmost interruption */ 1029 regmap_write(regmap, NAU8821_R11_INT_CLR_KEY_STATUS, clear_irq); 1030 1031 if (event_mask) 1032 snd_soc_jack_report(nau8821->jack, event, event_mask); 1033 1034 return IRQ_HANDLED; 1035 } 1036 1037 static const struct regmap_config nau8821_regmap_config = { 1038 .val_bits = NAU8821_REG_DATA_LEN, 1039 .reg_bits = NAU8821_REG_ADDR_LEN, 1040 1041 .max_register = NAU8821_REG_MAX, 1042 .readable_reg = nau8821_readable_reg, 1043 .writeable_reg = nau8821_writeable_reg, 1044 .volatile_reg = nau8821_volatile_reg, 1045 1046 .cache_type = REGCACHE_RBTREE, 1047 .reg_defaults = nau8821_reg_defaults, 1048 .num_reg_defaults = ARRAY_SIZE(nau8821_reg_defaults), 1049 }; 1050 1051 static int nau8821_component_probe(struct snd_soc_component *component) 1052 { 1053 struct nau8821 *nau8821 = snd_soc_component_get_drvdata(component); 1054 struct snd_soc_dapm_context *dapm = 1055 snd_soc_component_get_dapm(component); 1056 1057 nau8821->dapm = dapm; 1058 1059 return 0; 1060 } 1061 1062 /** 1063 * nau8821_calc_fll_param - Calculate FLL parameters. 1064 * @fll_in: external clock provided to codec. 1065 * @fs: sampling rate. 1066 * @fll_param: Pointer to structure of FLL parameters. 1067 * 1068 * Calculate FLL parameters to configure codec. 1069 * 1070 * Returns 0 for success or negative error code. 1071 */ 1072 static int nau8821_calc_fll_param(unsigned int fll_in, 1073 unsigned int fs, struct nau8821_fll *fll_param) 1074 { 1075 u64 fvco, fvco_max; 1076 unsigned int fref, i, fvco_sel; 1077 1078 /* Ensure the reference clock frequency (FREF) is <= 13.5MHz by 1079 * dividing freq_in by 1, 2, 4, or 8 using FLL pre-scalar. 1080 * FREF = freq_in / NAU8821_FLL_REF_DIV_MASK 1081 */ 1082 for (i = 0; i < ARRAY_SIZE(fll_pre_scalar); i++) { 1083 fref = fll_in >> fll_pre_scalar[i].param; 1084 if (fref <= NAU_FREF_MAX) 1085 break; 1086 } 1087 if (i == ARRAY_SIZE(fll_pre_scalar)) 1088 return -EINVAL; 1089 fll_param->clk_ref_div = fll_pre_scalar[i].val; 1090 1091 /* Choose the FLL ratio based on FREF */ 1092 for (i = 0; i < ARRAY_SIZE(fll_ratio); i++) { 1093 if (fref >= fll_ratio[i].param) 1094 break; 1095 } 1096 if (i == ARRAY_SIZE(fll_ratio)) 1097 return -EINVAL; 1098 fll_param->ratio = fll_ratio[i].val; 1099 1100 /* Calculate the frequency of DCO (FDCO) given freq_out = 256 * Fs. 1101 * FDCO must be within the 90MHz - 100MHz or the FFL cannot be 1102 * guaranteed across the full range of operation. 1103 * FDCO = freq_out * 2 * mclk_src_scaling 1104 */ 1105 fvco_max = 0; 1106 fvco_sel = ARRAY_SIZE(mclk_src_scaling); 1107 for (i = 0; i < ARRAY_SIZE(mclk_src_scaling); i++) { 1108 fvco = 256ULL * fs * 2 * mclk_src_scaling[i].param; 1109 if (fvco > NAU_FVCO_MIN && fvco < NAU_FVCO_MAX && 1110 fvco_max < fvco) { 1111 fvco_max = fvco; 1112 fvco_sel = i; 1113 } 1114 } 1115 if (ARRAY_SIZE(mclk_src_scaling) == fvco_sel) 1116 return -EINVAL; 1117 fll_param->mclk_src = mclk_src_scaling[fvco_sel].val; 1118 1119 /* Calculate the FLL 10-bit integer input and the FLL 24-bit fractional 1120 * input based on FDCO, FREF and FLL ratio. 1121 */ 1122 fvco = div_u64(fvco_max << 24, fref * fll_param->ratio); 1123 fll_param->fll_int = (fvco >> 24) & 0x3ff; 1124 fll_param->fll_frac = fvco & 0xffffff; 1125 1126 return 0; 1127 } 1128 1129 static void nau8821_fll_apply(struct nau8821 *nau8821, 1130 struct nau8821_fll *fll_param) 1131 { 1132 struct regmap *regmap = nau8821->regmap; 1133 1134 regmap_update_bits(regmap, NAU8821_R03_CLK_DIVIDER, 1135 NAU8821_CLK_SRC_MASK | NAU8821_CLK_MCLK_SRC_MASK, 1136 NAU8821_CLK_SRC_MCLK | fll_param->mclk_src); 1137 /* Make DSP operate at high speed for better performance. */ 1138 regmap_update_bits(regmap, NAU8821_R04_FLL1, 1139 NAU8821_FLL_RATIO_MASK | NAU8821_ICTRL_LATCH_MASK, 1140 fll_param->ratio | (0x6 << NAU8821_ICTRL_LATCH_SFT)); 1141 /* FLL 24-bit fractional input */ 1142 regmap_write(regmap, NAU8821_R0A_FLL7, 1143 (fll_param->fll_frac >> 16) & 0xff); 1144 regmap_write(regmap, NAU8821_R0B_FLL8, fll_param->fll_frac & 0xffff); 1145 /* FLL 10-bit integer input */ 1146 regmap_update_bits(regmap, NAU8821_R06_FLL3, 1147 NAU8821_FLL_INTEGER_MASK, fll_param->fll_int); 1148 /* FLL pre-scaler */ 1149 regmap_update_bits(regmap, NAU8821_R07_FLL4, 1150 NAU8821_HIGHBW_EN | NAU8821_FLL_REF_DIV_MASK, 1151 NAU8821_HIGHBW_EN | 1152 (fll_param->clk_ref_div << NAU8821_FLL_REF_DIV_SFT)); 1153 /* select divided VCO input */ 1154 regmap_update_bits(regmap, NAU8821_R08_FLL5, 1155 NAU8821_FLL_CLK_SW_MASK, NAU8821_FLL_CLK_SW_REF); 1156 /* Disable free-running mode */ 1157 regmap_update_bits(regmap, 1158 NAU8821_R09_FLL6, NAU8821_DCO_EN, 0); 1159 if (fll_param->fll_frac) { 1160 /* set FLL loop filter enable and cutoff frequency at 500Khz */ 1161 regmap_update_bits(regmap, NAU8821_R08_FLL5, 1162 NAU8821_FLL_PDB_DAC_EN | NAU8821_FLL_LOOP_FTR_EN | 1163 NAU8821_FLL_FTR_SW_MASK, 1164 NAU8821_FLL_PDB_DAC_EN | NAU8821_FLL_LOOP_FTR_EN | 1165 NAU8821_FLL_FTR_SW_FILTER); 1166 regmap_update_bits(regmap, NAU8821_R09_FLL6, 1167 NAU8821_SDM_EN | NAU8821_CUTOFF500, 1168 NAU8821_SDM_EN | NAU8821_CUTOFF500); 1169 } else { 1170 /* disable FLL loop filter and cutoff frequency */ 1171 regmap_update_bits(regmap, NAU8821_R08_FLL5, 1172 NAU8821_FLL_PDB_DAC_EN | NAU8821_FLL_LOOP_FTR_EN | 1173 NAU8821_FLL_FTR_SW_MASK, NAU8821_FLL_FTR_SW_ACCU); 1174 regmap_update_bits(regmap, NAU8821_R09_FLL6, 1175 NAU8821_SDM_EN | NAU8821_CUTOFF500, 0); 1176 } 1177 } 1178 1179 /** 1180 * nau8821_set_fll - FLL configuration of nau8821 1181 * @component: codec component 1182 * @pll_id: PLL requested 1183 * @source: clock source 1184 * @freq_in: frequency of input clock source 1185 * @freq_out: must be 256*Fs in order to achieve the best performance 1186 * 1187 * The FLL function can select BCLK or MCLK as the input clock source. 1188 * 1189 * Returns 0 if the parameters have been applied successfully 1190 * or negative error code. 1191 */ 1192 static int nau8821_set_fll(struct snd_soc_component *component, 1193 int pll_id, int source, unsigned int freq_in, unsigned int freq_out) 1194 { 1195 struct nau8821 *nau8821 = snd_soc_component_get_drvdata(component); 1196 struct nau8821_fll fll_set_param, *fll_param = &fll_set_param; 1197 int ret, fs; 1198 1199 fs = freq_out >> 8; 1200 ret = nau8821_calc_fll_param(freq_in, fs, fll_param); 1201 if (ret) { 1202 dev_err(nau8821->dev, 1203 "Unsupported input clock %d to output clock %d\n", 1204 freq_in, freq_out); 1205 return ret; 1206 } 1207 dev_dbg(nau8821->dev, 1208 "mclk_src=%x ratio=%x fll_frac=%x fll_int=%x clk_ref_div=%x\n", 1209 fll_param->mclk_src, fll_param->ratio, fll_param->fll_frac, 1210 fll_param->fll_int, fll_param->clk_ref_div); 1211 1212 nau8821_fll_apply(nau8821, fll_param); 1213 mdelay(2); 1214 regmap_update_bits(nau8821->regmap, NAU8821_R03_CLK_DIVIDER, 1215 NAU8821_CLK_SRC_MASK, NAU8821_CLK_SRC_VCO); 1216 1217 return 0; 1218 } 1219 1220 static void nau8821_configure_mclk_as_sysclk(struct regmap *regmap) 1221 { 1222 regmap_update_bits(regmap, NAU8821_R03_CLK_DIVIDER, 1223 NAU8821_CLK_SRC_MASK, NAU8821_CLK_SRC_MCLK); 1224 regmap_update_bits(regmap, NAU8821_R09_FLL6, 1225 NAU8821_DCO_EN, 0); 1226 /* Make DSP operate as default setting for power saving. */ 1227 regmap_update_bits(regmap, NAU8821_R04_FLL1, 1228 NAU8821_ICTRL_LATCH_MASK, 0); 1229 } 1230 1231 static int nau8821_configure_sysclk(struct nau8821 *nau8821, 1232 int clk_id, unsigned int freq) 1233 { 1234 struct regmap *regmap = nau8821->regmap; 1235 1236 switch (clk_id) { 1237 case NAU8821_CLK_DIS: 1238 /* Clock provided externally and disable internal VCO clock */ 1239 nau8821_configure_mclk_as_sysclk(regmap); 1240 break; 1241 case NAU8821_CLK_MCLK: 1242 nau8821_configure_mclk_as_sysclk(regmap); 1243 /* MCLK not changed by clock tree */ 1244 regmap_update_bits(regmap, NAU8821_R03_CLK_DIVIDER, 1245 NAU8821_CLK_MCLK_SRC_MASK, 0); 1246 break; 1247 case NAU8821_CLK_INTERNAL: 1248 if (nau8821_is_jack_inserted(regmap)) { 1249 regmap_update_bits(regmap, NAU8821_R09_FLL6, 1250 NAU8821_DCO_EN, NAU8821_DCO_EN); 1251 regmap_update_bits(regmap, NAU8821_R03_CLK_DIVIDER, 1252 NAU8821_CLK_SRC_MASK, NAU8821_CLK_SRC_VCO); 1253 /* Decrease the VCO frequency and make DSP operate 1254 * as default setting for power saving. 1255 */ 1256 regmap_update_bits(regmap, NAU8821_R03_CLK_DIVIDER, 1257 NAU8821_CLK_MCLK_SRC_MASK, 0xf); 1258 regmap_update_bits(regmap, NAU8821_R04_FLL1, 1259 NAU8821_ICTRL_LATCH_MASK | 1260 NAU8821_FLL_RATIO_MASK, 0x10); 1261 regmap_update_bits(regmap, NAU8821_R09_FLL6, 1262 NAU8821_SDM_EN, NAU8821_SDM_EN); 1263 } 1264 break; 1265 case NAU8821_CLK_FLL_MCLK: 1266 /* Higher FLL reference input frequency can only set lower 1267 * gain error, such as 0000 for input reference from MCLK 1268 * 12.288Mhz. 1269 */ 1270 regmap_update_bits(regmap, NAU8821_R06_FLL3, 1271 NAU8821_FLL_CLK_SRC_MASK | NAU8821_GAIN_ERR_MASK, 1272 NAU8821_FLL_CLK_SRC_MCLK | 0); 1273 break; 1274 case NAU8821_CLK_FLL_BLK: 1275 /* If FLL reference input is from low frequency source, 1276 * higher error gain can apply such as 0xf which has 1277 * the most sensitive gain error correction threshold, 1278 * Therefore, FLL has the most accurate DCO to 1279 * target frequency. 1280 */ 1281 regmap_update_bits(regmap, NAU8821_R06_FLL3, 1282 NAU8821_FLL_CLK_SRC_MASK | NAU8821_GAIN_ERR_MASK, 1283 NAU8821_FLL_CLK_SRC_BLK | 1284 (0xf << NAU8821_GAIN_ERR_SFT)); 1285 break; 1286 case NAU8821_CLK_FLL_FS: 1287 /* If FLL reference input is from low frequency source, 1288 * higher error gain can apply such as 0xf which has 1289 * the most sensitive gain error correction threshold, 1290 * Therefore, FLL has the most accurate DCO to 1291 * target frequency. 1292 */ 1293 regmap_update_bits(regmap, NAU8821_R06_FLL3, 1294 NAU8821_FLL_CLK_SRC_MASK | NAU8821_GAIN_ERR_MASK, 1295 NAU8821_FLL_CLK_SRC_FS | 1296 (0xf << NAU8821_GAIN_ERR_SFT)); 1297 break; 1298 default: 1299 dev_err(nau8821->dev, "Invalid clock id (%d)\n", clk_id); 1300 return -EINVAL; 1301 } 1302 nau8821->clk_id = clk_id; 1303 dev_dbg(nau8821->dev, "Sysclk is %dHz and clock id is %d\n", freq, 1304 nau8821->clk_id); 1305 1306 return 0; 1307 } 1308 1309 static int nau8821_set_sysclk(struct snd_soc_component *component, int clk_id, 1310 int source, unsigned int freq, int dir) 1311 { 1312 struct nau8821 *nau8821 = snd_soc_component_get_drvdata(component); 1313 1314 return nau8821_configure_sysclk(nau8821, clk_id, freq); 1315 } 1316 1317 static int nau8821_resume_setup(struct nau8821 *nau8821) 1318 { 1319 struct regmap *regmap = nau8821->regmap; 1320 1321 /* Close clock when jack type detection at manual mode */ 1322 nau8821_configure_sysclk(nau8821, NAU8821_CLK_DIS, 0); 1323 if (nau8821->irq) { 1324 /* Clear all interruption status */ 1325 nau8821_int_status_clear_all(regmap); 1326 1327 /* Enable both insertion and ejection interruptions, and then 1328 * bypass de-bounce circuit. 1329 */ 1330 regmap_update_bits(regmap, NAU8821_R0F_INTERRUPT_MASK, 1331 NAU8821_IRQ_EJECT_EN | NAU8821_IRQ_INSERT_EN, 0); 1332 regmap_update_bits(regmap, NAU8821_R0D_JACK_DET_CTRL, 1333 NAU8821_JACK_DET_DB_BYPASS, 1334 NAU8821_JACK_DET_DB_BYPASS); 1335 regmap_update_bits(regmap, NAU8821_R12_INTERRUPT_DIS_CTRL, 1336 NAU8821_IRQ_INSERT_DIS | NAU8821_IRQ_EJECT_DIS, 0); 1337 } 1338 1339 return 0; 1340 } 1341 1342 static int nau8821_set_bias_level(struct snd_soc_component *component, 1343 enum snd_soc_bias_level level) 1344 { 1345 struct nau8821 *nau8821 = snd_soc_component_get_drvdata(component); 1346 struct regmap *regmap = nau8821->regmap; 1347 1348 switch (level) { 1349 case SND_SOC_BIAS_ON: 1350 break; 1351 1352 case SND_SOC_BIAS_PREPARE: 1353 break; 1354 1355 case SND_SOC_BIAS_STANDBY: 1356 /* Setup codec configuration after resume */ 1357 if (snd_soc_component_get_bias_level(component) == 1358 SND_SOC_BIAS_OFF) 1359 nau8821_resume_setup(nau8821); 1360 break; 1361 1362 case SND_SOC_BIAS_OFF: 1363 /* HPL/HPR short to ground */ 1364 regmap_update_bits(regmap, NAU8821_R0D_JACK_DET_CTRL, 1365 NAU8821_SPKR_DWN1R | NAU8821_SPKR_DWN1L, 0); 1366 if (nau8821->irq) { 1367 /* Reset the configuration of jack type for detection. 1368 * Detach 2kOhm Resistors from MICBIAS to MICGND1/2. 1369 */ 1370 regmap_update_bits(regmap, NAU8821_R74_MIC_BIAS, 1371 NAU8821_MICBIAS_JKR2, 0); 1372 /* Turn off all interruptions before system shutdown. 1373 * Keep theinterruption quiet before resume 1374 * setup completes. 1375 */ 1376 regmap_write(regmap, 1377 NAU8821_R12_INTERRUPT_DIS_CTRL, 0xffff); 1378 regmap_update_bits(regmap, NAU8821_R0F_INTERRUPT_MASK, 1379 NAU8821_IRQ_EJECT_EN | NAU8821_IRQ_INSERT_EN, 1380 NAU8821_IRQ_EJECT_EN | NAU8821_IRQ_INSERT_EN); 1381 } 1382 break; 1383 default: 1384 break; 1385 } 1386 1387 return 0; 1388 } 1389 1390 static int __maybe_unused nau8821_suspend(struct snd_soc_component *component) 1391 { 1392 struct nau8821 *nau8821 = snd_soc_component_get_drvdata(component); 1393 1394 if (nau8821->irq) 1395 disable_irq(nau8821->irq); 1396 snd_soc_component_force_bias_level(component, SND_SOC_BIAS_OFF); 1397 /* Power down codec power; don't support button wakeup */ 1398 snd_soc_component_disable_pin(component, "MICBIAS"); 1399 snd_soc_dapm_sync(nau8821->dapm); 1400 regcache_cache_only(nau8821->regmap, true); 1401 regcache_mark_dirty(nau8821->regmap); 1402 1403 return 0; 1404 } 1405 1406 static int __maybe_unused nau8821_resume(struct snd_soc_component *component) 1407 { 1408 struct nau8821 *nau8821 = snd_soc_component_get_drvdata(component); 1409 1410 regcache_cache_only(nau8821->regmap, false); 1411 regcache_sync(nau8821->regmap); 1412 if (nau8821->irq) 1413 enable_irq(nau8821->irq); 1414 1415 return 0; 1416 } 1417 1418 static const struct snd_soc_component_driver nau8821_component_driver = { 1419 .probe = nau8821_component_probe, 1420 .set_sysclk = nau8821_set_sysclk, 1421 .set_pll = nau8821_set_fll, 1422 .set_bias_level = nau8821_set_bias_level, 1423 .suspend = nau8821_suspend, 1424 .resume = nau8821_resume, 1425 .controls = nau8821_controls, 1426 .num_controls = ARRAY_SIZE(nau8821_controls), 1427 .dapm_widgets = nau8821_dapm_widgets, 1428 .num_dapm_widgets = ARRAY_SIZE(nau8821_dapm_widgets), 1429 .dapm_routes = nau8821_dapm_routes, 1430 .num_dapm_routes = ARRAY_SIZE(nau8821_dapm_routes), 1431 .suspend_bias_off = 1, 1432 .non_legacy_dai_naming = 1, 1433 .idle_bias_on = 1, 1434 .use_pmdown_time = 1, 1435 .endianness = 1, 1436 }; 1437 1438 /** 1439 * nau8821_enable_jack_detect - Specify a jack for event reporting 1440 * 1441 * @component: component to register the jack with 1442 * @jack: jack to use to report headset and button events on 1443 * 1444 * After this function has been called the headset insert/remove and button 1445 * events will be routed to the given jack. Jack can be null to stop 1446 * reporting. 1447 */ 1448 int nau8821_enable_jack_detect(struct snd_soc_component *component, 1449 struct snd_soc_jack *jack) 1450 { 1451 struct nau8821 *nau8821 = snd_soc_component_get_drvdata(component); 1452 int ret; 1453 1454 nau8821->jack = jack; 1455 /* Initiate jack detection work queue */ 1456 INIT_WORK(&nau8821->jdet_work, nau8821_jdet_work); 1457 ret = devm_request_threaded_irq(nau8821->dev, nau8821->irq, NULL, 1458 nau8821_interrupt, IRQF_TRIGGER_LOW | IRQF_ONESHOT, 1459 "nau8821", nau8821); 1460 if (ret) { 1461 dev_err(nau8821->dev, "Cannot request irq %d (%d)\n", 1462 nau8821->irq, ret); 1463 return ret; 1464 } 1465 1466 return ret; 1467 } 1468 EXPORT_SYMBOL_GPL(nau8821_enable_jack_detect); 1469 1470 static void nau8821_reset_chip(struct regmap *regmap) 1471 { 1472 regmap_write(regmap, NAU8821_R00_RESET, 0xffff); 1473 regmap_write(regmap, NAU8821_R00_RESET, 0xffff); 1474 } 1475 1476 static void nau8821_print_device_properties(struct nau8821 *nau8821) 1477 { 1478 struct device *dev = nau8821->dev; 1479 1480 dev_dbg(dev, "jkdet-enable: %d\n", nau8821->jkdet_enable); 1481 dev_dbg(dev, "jkdet-pull-enable: %d\n", nau8821->jkdet_pull_enable); 1482 dev_dbg(dev, "jkdet-pull-up: %d\n", nau8821->jkdet_pull_up); 1483 dev_dbg(dev, "jkdet-polarity: %d\n", nau8821->jkdet_polarity); 1484 dev_dbg(dev, "micbias-voltage: %d\n", nau8821->micbias_voltage); 1485 dev_dbg(dev, "vref-impedance: %d\n", nau8821->vref_impedance); 1486 dev_dbg(dev, "jack-insert-debounce: %d\n", 1487 nau8821->jack_insert_debounce); 1488 dev_dbg(dev, "jack-eject-debounce: %d\n", 1489 nau8821->jack_eject_debounce); 1490 dev_dbg(dev, "dmic-clk-threshold: %d\n", 1491 nau8821->dmic_clk_threshold); 1492 } 1493 1494 static int nau8821_read_device_properties(struct device *dev, 1495 struct nau8821 *nau8821) 1496 { 1497 int ret; 1498 1499 nau8821->jkdet_enable = device_property_read_bool(dev, 1500 "nuvoton,jkdet-enable"); 1501 nau8821->jkdet_pull_enable = device_property_read_bool(dev, 1502 "nuvoton,jkdet-pull-enable"); 1503 nau8821->jkdet_pull_up = device_property_read_bool(dev, 1504 "nuvoton,jkdet-pull-up"); 1505 ret = device_property_read_u32(dev, "nuvoton,jkdet-polarity", 1506 &nau8821->jkdet_polarity); 1507 if (ret) 1508 nau8821->jkdet_polarity = 1; 1509 ret = device_property_read_u32(dev, "nuvoton,micbias-voltage", 1510 &nau8821->micbias_voltage); 1511 if (ret) 1512 nau8821->micbias_voltage = 6; 1513 ret = device_property_read_u32(dev, "nuvoton,vref-impedance", 1514 &nau8821->vref_impedance); 1515 if (ret) 1516 nau8821->vref_impedance = 2; 1517 ret = device_property_read_u32(dev, "nuvoton,jack-insert-debounce", 1518 &nau8821->jack_insert_debounce); 1519 if (ret) 1520 nau8821->jack_insert_debounce = 7; 1521 ret = device_property_read_u32(dev, "nuvoton,jack-eject-debounce", 1522 &nau8821->jack_eject_debounce); 1523 if (ret) 1524 nau8821->jack_eject_debounce = 0; 1525 ret = device_property_read_u32(dev, "nuvoton,dmic-clk-threshold", 1526 &nau8821->dmic_clk_threshold); 1527 if (ret) 1528 nau8821->dmic_clk_threshold = 3072000; 1529 1530 return 0; 1531 } 1532 1533 static void nau8821_init_regs(struct nau8821 *nau8821) 1534 { 1535 struct regmap *regmap = nau8821->regmap; 1536 1537 /* Enable Bias/Vmid */ 1538 regmap_update_bits(regmap, NAU8821_R66_BIAS_ADJ, 1539 NAU8821_BIAS_VMID, NAU8821_BIAS_VMID); 1540 regmap_update_bits(regmap, NAU8821_R76_BOOST, 1541 NAU8821_GLOBAL_BIAS_EN, NAU8821_GLOBAL_BIAS_EN); 1542 /* VMID Tieoff setting and enable TESTDAC. 1543 * This sets the analog DAC inputs to a '0' input signal to avoid 1544 * any glitches due to power up transients in both the analog and 1545 * digital DAC circuit. 1546 */ 1547 regmap_update_bits(regmap, NAU8821_R66_BIAS_ADJ, 1548 NAU8821_BIAS_VMID_SEL_MASK | NAU8821_BIAS_TESTDAC_EN, 1549 (nau8821->vref_impedance << NAU8821_BIAS_VMID_SEL_SFT) | 1550 NAU8821_BIAS_TESTDAC_EN); 1551 /* Disable short Frame Sync detection logic */ 1552 regmap_update_bits(regmap, NAU8821_R1E_LEFT_TIME_SLOT, 1553 NAU8821_DIS_FS_SHORT_DET, NAU8821_DIS_FS_SHORT_DET); 1554 /* Disable Boost Driver, Automatic Short circuit protection enable */ 1555 regmap_update_bits(regmap, NAU8821_R76_BOOST, 1556 NAU8821_PRECHARGE_DIS | NAU8821_HP_BOOST_DIS | 1557 NAU8821_HP_BOOST_G_DIS | NAU8821_SHORT_SHUTDOWN_EN, 1558 NAU8821_PRECHARGE_DIS | NAU8821_HP_BOOST_DIS | 1559 NAU8821_HP_BOOST_G_DIS | NAU8821_SHORT_SHUTDOWN_EN); 1560 /* Class G timer 64ms */ 1561 regmap_update_bits(regmap, NAU8821_R4B_CLASSG_CTRL, 1562 NAU8821_CLASSG_TIMER_MASK, 1563 0x20 << NAU8821_CLASSG_TIMER_SFT); 1564 /* Class AB bias current to 2x, DAC Capacitor enable MSB/LSB */ 1565 regmap_update_bits(regmap, NAU8821_R6A_ANALOG_CONTROL_2, 1566 NAU8821_HP_NON_CLASSG_CURRENT_2xADJ | 1567 NAU8821_DAC_CAPACITOR_MSB | NAU8821_DAC_CAPACITOR_LSB, 1568 NAU8821_HP_NON_CLASSG_CURRENT_2xADJ | 1569 NAU8821_DAC_CAPACITOR_MSB | NAU8821_DAC_CAPACITOR_LSB); 1570 /* Disable DACR/L power */ 1571 regmap_update_bits(regmap, NAU8821_R80_CHARGE_PUMP, 1572 NAU8821_POWER_DOWN_DACR | NAU8821_POWER_DOWN_DACL, 0); 1573 /* DAC clock delay 2ns, VREF */ 1574 regmap_update_bits(regmap, NAU8821_R73_RDAC, 1575 NAU8821_DAC_CLK_DELAY_MASK | NAU8821_DAC_VREF_MASK, 1576 (0x2 << NAU8821_DAC_CLK_DELAY_SFT) | 1577 (0x3 << NAU8821_DAC_VREF_SFT)); 1578 1579 regmap_update_bits(regmap, NAU8821_R74_MIC_BIAS, 1580 NAU8821_MICBIAS_VOLTAGE_MASK, nau8821->micbias_voltage); 1581 /* Default oversampling/decimations settings are unusable 1582 * (audible hiss). Set it to something better. 1583 */ 1584 regmap_update_bits(regmap, NAU8821_R2B_ADC_RATE, 1585 NAU8821_ADC_SYNC_DOWN_MASK, NAU8821_ADC_SYNC_DOWN_64); 1586 regmap_update_bits(regmap, NAU8821_R2C_DAC_CTRL1, 1587 NAU8821_DAC_OVERSAMPLE_MASK, NAU8821_DAC_OVERSAMPLE_64); 1588 } 1589 1590 static int nau8821_setup_irq(struct nau8821 *nau8821) 1591 { 1592 struct regmap *regmap = nau8821->regmap; 1593 1594 /* Jack detection */ 1595 regmap_update_bits(regmap, NAU8821_R1A_GPIO12_CTRL, 1596 NAU8821_JKDET_OUTPUT_EN, 1597 nau8821->jkdet_enable ? 0 : NAU8821_JKDET_OUTPUT_EN); 1598 regmap_update_bits(regmap, NAU8821_R1A_GPIO12_CTRL, 1599 NAU8821_JKDET_PULL_EN, 1600 nau8821->jkdet_pull_enable ? 0 : NAU8821_JKDET_PULL_EN); 1601 regmap_update_bits(regmap, NAU8821_R1A_GPIO12_CTRL, 1602 NAU8821_JKDET_PULL_UP, 1603 nau8821->jkdet_pull_up ? NAU8821_JKDET_PULL_UP : 0); 1604 regmap_update_bits(regmap, NAU8821_R0D_JACK_DET_CTRL, 1605 NAU8821_JACK_POLARITY, 1606 /* jkdet_polarity - 1 is for active-low */ 1607 nau8821->jkdet_polarity ? 0 : NAU8821_JACK_POLARITY); 1608 regmap_update_bits(regmap, NAU8821_R0D_JACK_DET_CTRL, 1609 NAU8821_JACK_INSERT_DEBOUNCE_MASK, 1610 nau8821->jack_insert_debounce << 1611 NAU8821_JACK_INSERT_DEBOUNCE_SFT); 1612 regmap_update_bits(regmap, NAU8821_R0D_JACK_DET_CTRL, 1613 NAU8821_JACK_EJECT_DEBOUNCE_MASK, 1614 nau8821->jack_eject_debounce << 1615 NAU8821_JACK_EJECT_DEBOUNCE_SFT); 1616 /* Pull up IRQ pin */ 1617 regmap_update_bits(regmap, NAU8821_R0F_INTERRUPT_MASK, 1618 NAU8821_IRQ_PIN_PULL_UP | NAU8821_IRQ_PIN_PULL_EN | 1619 NAU8821_IRQ_OUTPUT_EN, NAU8821_IRQ_PIN_PULL_UP | 1620 NAU8821_IRQ_PIN_PULL_EN | NAU8821_IRQ_OUTPUT_EN); 1621 /* Disable interruption before codec initiation done */ 1622 /* Mask unneeded IRQs: 1 - disable, 0 - enable */ 1623 regmap_update_bits(regmap, NAU8821_R0F_INTERRUPT_MASK, 0x3f5, 0x3f5); 1624 1625 return 0; 1626 } 1627 1628 static int nau8821_i2c_probe(struct i2c_client *i2c, 1629 const struct i2c_device_id *id) 1630 { 1631 struct device *dev = &i2c->dev; 1632 struct nau8821 *nau8821 = dev_get_platdata(&i2c->dev); 1633 int ret, value; 1634 1635 if (!nau8821) { 1636 nau8821 = devm_kzalloc(dev, sizeof(*nau8821), GFP_KERNEL); 1637 if (!nau8821) 1638 return -ENOMEM; 1639 nau8821_read_device_properties(dev, nau8821); 1640 } 1641 i2c_set_clientdata(i2c, nau8821); 1642 1643 nau8821->regmap = devm_regmap_init_i2c(i2c, &nau8821_regmap_config); 1644 if (IS_ERR(nau8821->regmap)) 1645 return PTR_ERR(nau8821->regmap); 1646 1647 nau8821->dev = dev; 1648 nau8821->irq = i2c->irq; 1649 nau8821_print_device_properties(nau8821); 1650 1651 nau8821_reset_chip(nau8821->regmap); 1652 ret = regmap_read(nau8821->regmap, NAU8821_R58_I2C_DEVICE_ID, &value); 1653 if (ret) { 1654 dev_err(dev, "Failed to read device id (%d)\n", ret); 1655 return ret; 1656 } 1657 nau8821_init_regs(nau8821); 1658 1659 if (i2c->irq) 1660 nau8821_setup_irq(nau8821); 1661 1662 ret = devm_snd_soc_register_component(&i2c->dev, 1663 &nau8821_component_driver, &nau8821_dai, 1); 1664 1665 return ret; 1666 } 1667 1668 static int nau8821_i2c_remove(struct i2c_client *i2c_client) 1669 { 1670 struct nau8821 *nau8821 = i2c_get_clientdata(i2c_client); 1671 1672 devm_free_irq(nau8821->dev, nau8821->irq, nau8821); 1673 1674 return 0; 1675 } 1676 1677 static const struct i2c_device_id nau8821_i2c_ids[] = { 1678 { "nau8821", 0 }, 1679 { } 1680 }; 1681 MODULE_DEVICE_TABLE(i2c, nau8821_i2c_ids); 1682 1683 #ifdef CONFIG_OF 1684 static const struct of_device_id nau8821_of_ids[] = { 1685 { .compatible = "nuvoton,nau8821", }, 1686 {} 1687 }; 1688 MODULE_DEVICE_TABLE(of, nau8821_of_ids); 1689 #endif 1690 1691 #ifdef CONFIG_ACPI 1692 static const struct acpi_device_id nau8821_acpi_match[] = { 1693 { "NVTN2020", 0 }, 1694 {}, 1695 }; 1696 MODULE_DEVICE_TABLE(acpi, nau8821_acpi_match); 1697 #endif 1698 1699 static struct i2c_driver nau8821_driver = { 1700 .driver = { 1701 .name = "nau8821", 1702 .of_match_table = of_match_ptr(nau8821_of_ids), 1703 .acpi_match_table = ACPI_PTR(nau8821_acpi_match), 1704 }, 1705 .probe = nau8821_i2c_probe, 1706 .remove = nau8821_i2c_remove, 1707 .id_table = nau8821_i2c_ids, 1708 }; 1709 module_i2c_driver(nau8821_driver); 1710 1711 MODULE_DESCRIPTION("ASoC nau8821 driver"); 1712 MODULE_AUTHOR("John Hsu <kchsu0@nuvoton.com>"); 1713 MODULE_AUTHOR("Seven Lee <wtli@nuvoton.com>"); 1714 MODULE_LICENSE("GPL"); 1715