1 /* 2 * Nuvoton NAU8825 audio codec driver 3 * 4 * Copyright 2015 Google Chromium project. 5 * Author: Anatol Pomozov <anatol@chromium.org> 6 * Copyright 2015 Nuvoton Technology Corp. 7 * Co-author: Meng-Huang Kuo <mhkuo@nuvoton.com> 8 * 9 * Licensed under the GPL-2. 10 */ 11 12 #include <linux/module.h> 13 #include <linux/delay.h> 14 #include <linux/init.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 22 #include <sound/initval.h> 23 #include <sound/tlv.h> 24 #include <sound/core.h> 25 #include <sound/pcm.h> 26 #include <sound/pcm_params.h> 27 #include <sound/soc.h> 28 #include <sound/jack.h> 29 30 31 #include "nau8825.h" 32 33 #define NAU_FREF_MAX 13500000 34 #define NAU_FVCO_MAX 100000000 35 #define NAU_FVCO_MIN 90000000 36 37 struct nau8825_fll { 38 int mclk_src; 39 int ratio; 40 int fll_frac; 41 int fll_int; 42 int clk_ref_div; 43 }; 44 45 struct nau8825_fll_attr { 46 unsigned int param; 47 unsigned int val; 48 }; 49 50 /* scaling for mclk from sysclk_src output */ 51 static const struct nau8825_fll_attr mclk_src_scaling[] = { 52 { 1, 0x0 }, 53 { 2, 0x2 }, 54 { 4, 0x3 }, 55 { 8, 0x4 }, 56 { 16, 0x5 }, 57 { 32, 0x6 }, 58 { 3, 0x7 }, 59 { 6, 0xa }, 60 { 12, 0xb }, 61 { 24, 0xc }, 62 { 48, 0xd }, 63 { 96, 0xe }, 64 { 5, 0xf }, 65 }; 66 67 /* ratio for input clk freq */ 68 static const struct nau8825_fll_attr fll_ratio[] = { 69 { 512000, 0x01 }, 70 { 256000, 0x02 }, 71 { 128000, 0x04 }, 72 { 64000, 0x08 }, 73 { 32000, 0x10 }, 74 { 8000, 0x20 }, 75 { 4000, 0x40 }, 76 }; 77 78 static const struct nau8825_fll_attr fll_pre_scalar[] = { 79 { 1, 0x0 }, 80 { 2, 0x1 }, 81 { 4, 0x2 }, 82 { 8, 0x3 }, 83 }; 84 85 static const struct reg_default nau8825_reg_defaults[] = { 86 { NAU8825_REG_ENA_CTRL, 0x00ff }, 87 { NAU8825_REG_CLK_DIVIDER, 0x0050 }, 88 { NAU8825_REG_FLL1, 0x0 }, 89 { NAU8825_REG_FLL2, 0x3126 }, 90 { NAU8825_REG_FLL3, 0x0008 }, 91 { NAU8825_REG_FLL4, 0x0010 }, 92 { NAU8825_REG_FLL5, 0x0 }, 93 { NAU8825_REG_FLL6, 0x6000 }, 94 { NAU8825_REG_FLL_VCO_RSV, 0xf13c }, 95 { NAU8825_REG_HSD_CTRL, 0x000c }, 96 { NAU8825_REG_JACK_DET_CTRL, 0x0 }, 97 { NAU8825_REG_INTERRUPT_MASK, 0x0 }, 98 { NAU8825_REG_INTERRUPT_DIS_CTRL, 0xffff }, 99 { NAU8825_REG_SAR_CTRL, 0x0015 }, 100 { NAU8825_REG_KEYDET_CTRL, 0x0110 }, 101 { NAU8825_REG_VDET_THRESHOLD_1, 0x0 }, 102 { NAU8825_REG_VDET_THRESHOLD_2, 0x0 }, 103 { NAU8825_REG_VDET_THRESHOLD_3, 0x0 }, 104 { NAU8825_REG_VDET_THRESHOLD_4, 0x0 }, 105 { NAU8825_REG_GPIO34_CTRL, 0x0 }, 106 { NAU8825_REG_GPIO12_CTRL, 0x0 }, 107 { NAU8825_REG_TDM_CTRL, 0x0 }, 108 { NAU8825_REG_I2S_PCM_CTRL1, 0x000b }, 109 { NAU8825_REG_I2S_PCM_CTRL2, 0x8010 }, 110 { NAU8825_REG_LEFT_TIME_SLOT, 0x0 }, 111 { NAU8825_REG_RIGHT_TIME_SLOT, 0x0 }, 112 { NAU8825_REG_BIQ_CTRL, 0x0 }, 113 { NAU8825_REG_BIQ_COF1, 0x0 }, 114 { NAU8825_REG_BIQ_COF2, 0x0 }, 115 { NAU8825_REG_BIQ_COF3, 0x0 }, 116 { NAU8825_REG_BIQ_COF4, 0x0 }, 117 { NAU8825_REG_BIQ_COF5, 0x0 }, 118 { NAU8825_REG_BIQ_COF6, 0x0 }, 119 { NAU8825_REG_BIQ_COF7, 0x0 }, 120 { NAU8825_REG_BIQ_COF8, 0x0 }, 121 { NAU8825_REG_BIQ_COF9, 0x0 }, 122 { NAU8825_REG_BIQ_COF10, 0x0 }, 123 { NAU8825_REG_ADC_RATE, 0x0010 }, 124 { NAU8825_REG_DAC_CTRL1, 0x0001 }, 125 { NAU8825_REG_DAC_CTRL2, 0x0 }, 126 { NAU8825_REG_DAC_DGAIN_CTRL, 0x0 }, 127 { NAU8825_REG_ADC_DGAIN_CTRL, 0x00cf }, 128 { NAU8825_REG_MUTE_CTRL, 0x0 }, 129 { NAU8825_REG_HSVOL_CTRL, 0x0 }, 130 { NAU8825_REG_DACL_CTRL, 0x02cf }, 131 { NAU8825_REG_DACR_CTRL, 0x00cf }, 132 { NAU8825_REG_ADC_DRC_KNEE_IP12, 0x1486 }, 133 { NAU8825_REG_ADC_DRC_KNEE_IP34, 0x0f12 }, 134 { NAU8825_REG_ADC_DRC_SLOPES, 0x25ff }, 135 { NAU8825_REG_ADC_DRC_ATKDCY, 0x3457 }, 136 { NAU8825_REG_DAC_DRC_KNEE_IP12, 0x1486 }, 137 { NAU8825_REG_DAC_DRC_KNEE_IP34, 0x0f12 }, 138 { NAU8825_REG_DAC_DRC_SLOPES, 0x25f9 }, 139 { NAU8825_REG_DAC_DRC_ATKDCY, 0x3457 }, 140 { NAU8825_REG_IMM_MODE_CTRL, 0x0 }, 141 { NAU8825_REG_CLASSG_CTRL, 0x0 }, 142 { NAU8825_REG_OPT_EFUSE_CTRL, 0x0 }, 143 { NAU8825_REG_MISC_CTRL, 0x0 }, 144 { NAU8825_REG_BIAS_ADJ, 0x0 }, 145 { NAU8825_REG_TRIM_SETTINGS, 0x0 }, 146 { NAU8825_REG_ANALOG_CONTROL_1, 0x0 }, 147 { NAU8825_REG_ANALOG_CONTROL_2, 0x0 }, 148 { NAU8825_REG_ANALOG_ADC_1, 0x0011 }, 149 { NAU8825_REG_ANALOG_ADC_2, 0x0020 }, 150 { NAU8825_REG_RDAC, 0x0008 }, 151 { NAU8825_REG_MIC_BIAS, 0x0006 }, 152 { NAU8825_REG_BOOST, 0x0 }, 153 { NAU8825_REG_FEPGA, 0x0 }, 154 { NAU8825_REG_POWER_UP_CONTROL, 0x0 }, 155 { NAU8825_REG_CHARGE_PUMP, 0x0 }, 156 }; 157 158 static bool nau8825_readable_reg(struct device *dev, unsigned int reg) 159 { 160 switch (reg) { 161 case NAU8825_REG_ENA_CTRL: 162 case NAU8825_REG_CLK_DIVIDER ... NAU8825_REG_FLL_VCO_RSV: 163 case NAU8825_REG_HSD_CTRL ... NAU8825_REG_JACK_DET_CTRL: 164 case NAU8825_REG_INTERRUPT_MASK ... NAU8825_REG_KEYDET_CTRL: 165 case NAU8825_REG_VDET_THRESHOLD_1 ... NAU8825_REG_DACR_CTRL: 166 case NAU8825_REG_ADC_DRC_KNEE_IP12 ... NAU8825_REG_ADC_DRC_ATKDCY: 167 case NAU8825_REG_DAC_DRC_KNEE_IP12 ... NAU8825_REG_DAC_DRC_ATKDCY: 168 case NAU8825_REG_IMM_MODE_CTRL ... NAU8825_REG_IMM_RMS_R: 169 case NAU8825_REG_CLASSG_CTRL ... NAU8825_REG_OPT_EFUSE_CTRL: 170 case NAU8825_REG_MISC_CTRL: 171 case NAU8825_REG_I2C_DEVICE_ID ... NAU8825_REG_SARDOUT_RAM_STATUS: 172 case NAU8825_REG_BIAS_ADJ: 173 case NAU8825_REG_TRIM_SETTINGS ... NAU8825_REG_ANALOG_CONTROL_2: 174 case NAU8825_REG_ANALOG_ADC_1 ... NAU8825_REG_MIC_BIAS: 175 case NAU8825_REG_BOOST ... NAU8825_REG_FEPGA: 176 case NAU8825_REG_POWER_UP_CONTROL ... NAU8825_REG_GENERAL_STATUS: 177 return true; 178 default: 179 return false; 180 } 181 182 } 183 184 static bool nau8825_writeable_reg(struct device *dev, unsigned int reg) 185 { 186 switch (reg) { 187 case NAU8825_REG_RESET ... NAU8825_REG_ENA_CTRL: 188 case NAU8825_REG_CLK_DIVIDER ... NAU8825_REG_FLL_VCO_RSV: 189 case NAU8825_REG_HSD_CTRL ... NAU8825_REG_JACK_DET_CTRL: 190 case NAU8825_REG_INTERRUPT_MASK: 191 case NAU8825_REG_INT_CLR_KEY_STATUS ... NAU8825_REG_KEYDET_CTRL: 192 case NAU8825_REG_VDET_THRESHOLD_1 ... NAU8825_REG_DACR_CTRL: 193 case NAU8825_REG_ADC_DRC_KNEE_IP12 ... NAU8825_REG_ADC_DRC_ATKDCY: 194 case NAU8825_REG_DAC_DRC_KNEE_IP12 ... NAU8825_REG_DAC_DRC_ATKDCY: 195 case NAU8825_REG_IMM_MODE_CTRL: 196 case NAU8825_REG_CLASSG_CTRL ... NAU8825_REG_OPT_EFUSE_CTRL: 197 case NAU8825_REG_MISC_CTRL: 198 case NAU8825_REG_BIAS_ADJ: 199 case NAU8825_REG_TRIM_SETTINGS ... NAU8825_REG_ANALOG_CONTROL_2: 200 case NAU8825_REG_ANALOG_ADC_1 ... NAU8825_REG_MIC_BIAS: 201 case NAU8825_REG_BOOST ... NAU8825_REG_FEPGA: 202 case NAU8825_REG_POWER_UP_CONTROL ... NAU8825_REG_CHARGE_PUMP: 203 return true; 204 default: 205 return false; 206 } 207 } 208 209 static bool nau8825_volatile_reg(struct device *dev, unsigned int reg) 210 { 211 switch (reg) { 212 case NAU8825_REG_RESET: 213 case NAU8825_REG_IRQ_STATUS: 214 case NAU8825_REG_INT_CLR_KEY_STATUS: 215 case NAU8825_REG_IMM_RMS_L: 216 case NAU8825_REG_IMM_RMS_R: 217 case NAU8825_REG_I2C_DEVICE_ID: 218 case NAU8825_REG_SARDOUT_RAM_STATUS: 219 case NAU8825_REG_CHARGE_PUMP_INPUT_READ: 220 case NAU8825_REG_GENERAL_STATUS: 221 return true; 222 default: 223 return false; 224 } 225 } 226 227 static int nau8825_pump_event(struct snd_soc_dapm_widget *w, 228 struct snd_kcontrol *kcontrol, int event) 229 { 230 switch (event) { 231 case SND_SOC_DAPM_POST_PMU: 232 /* Prevent startup click by letting charge pump to ramp up */ 233 msleep(10); 234 break; 235 default: 236 return -EINVAL; 237 } 238 239 return 0; 240 } 241 242 static const char * const nau8825_adc_decimation[] = { 243 "32", "64", "128", "256" 244 }; 245 246 static const struct soc_enum nau8825_adc_decimation_enum = 247 SOC_ENUM_SINGLE(NAU8825_REG_ADC_RATE, NAU8825_ADC_SYNC_DOWN_SFT, 248 ARRAY_SIZE(nau8825_adc_decimation), nau8825_adc_decimation); 249 250 static const char * const nau8825_dac_oversampl[] = { 251 "64", "256", "128", "", "32" 252 }; 253 254 static const struct soc_enum nau8825_dac_oversampl_enum = 255 SOC_ENUM_SINGLE(NAU8825_REG_DAC_CTRL1, NAU8825_DAC_OVERSAMPLE_SFT, 256 ARRAY_SIZE(nau8825_dac_oversampl), nau8825_dac_oversampl); 257 258 static const DECLARE_TLV_DB_MINMAX_MUTE(adc_vol_tlv, -10300, 2400); 259 static const DECLARE_TLV_DB_MINMAX_MUTE(sidetone_vol_tlv, -4200, 0); 260 static const DECLARE_TLV_DB_MINMAX(dac_vol_tlv, -5400, 0); 261 static const DECLARE_TLV_DB_MINMAX(fepga_gain_tlv, -100, 3600); 262 static const DECLARE_TLV_DB_MINMAX_MUTE(crosstalk_vol_tlv, -9600, 2400); 263 264 static const struct snd_kcontrol_new nau8825_controls[] = { 265 SOC_SINGLE_TLV("Mic Volume", NAU8825_REG_ADC_DGAIN_CTRL, 266 0, 0xff, 0, adc_vol_tlv), 267 SOC_DOUBLE_TLV("Headphone Bypass Volume", NAU8825_REG_ADC_DGAIN_CTRL, 268 12, 8, 0x0f, 0, sidetone_vol_tlv), 269 SOC_DOUBLE_TLV("Headphone Volume", NAU8825_REG_HSVOL_CTRL, 270 6, 0, 0x3f, 1, dac_vol_tlv), 271 SOC_SINGLE_TLV("Frontend PGA Volume", NAU8825_REG_POWER_UP_CONTROL, 272 8, 37, 0, fepga_gain_tlv), 273 SOC_DOUBLE_TLV("Headphone Crosstalk Volume", NAU8825_REG_DAC_DGAIN_CTRL, 274 0, 8, 0xff, 0, crosstalk_vol_tlv), 275 276 SOC_ENUM("ADC Decimation Rate", nau8825_adc_decimation_enum), 277 SOC_ENUM("DAC Oversampling Rate", nau8825_dac_oversampl_enum), 278 }; 279 280 /* DAC Mux 0x33[9] and 0x34[9] */ 281 static const char * const nau8825_dac_src[] = { 282 "DACL", "DACR", 283 }; 284 285 static SOC_ENUM_SINGLE_DECL( 286 nau8825_dacl_enum, NAU8825_REG_DACL_CTRL, 287 NAU8825_DACL_CH_SEL_SFT, nau8825_dac_src); 288 289 static SOC_ENUM_SINGLE_DECL( 290 nau8825_dacr_enum, NAU8825_REG_DACR_CTRL, 291 NAU8825_DACR_CH_SEL_SFT, nau8825_dac_src); 292 293 static const struct snd_kcontrol_new nau8825_dacl_mux = 294 SOC_DAPM_ENUM("DACL Source", nau8825_dacl_enum); 295 296 static const struct snd_kcontrol_new nau8825_dacr_mux = 297 SOC_DAPM_ENUM("DACR Source", nau8825_dacr_enum); 298 299 300 static const struct snd_soc_dapm_widget nau8825_dapm_widgets[] = { 301 SND_SOC_DAPM_AIF_OUT("AIFTX", "Capture", 0, NAU8825_REG_I2S_PCM_CTRL2, 302 15, 1), 303 304 SND_SOC_DAPM_INPUT("MIC"), 305 SND_SOC_DAPM_MICBIAS("MICBIAS", NAU8825_REG_MIC_BIAS, 8, 0), 306 307 SND_SOC_DAPM_PGA("Frontend PGA", NAU8825_REG_POWER_UP_CONTROL, 14, 0, 308 NULL, 0), 309 310 SND_SOC_DAPM_ADC("ADC", NULL, NAU8825_REG_ENA_CTRL, 8, 0), 311 SND_SOC_DAPM_SUPPLY("ADC Clock", NAU8825_REG_ENA_CTRL, 7, 0, NULL, 0), 312 SND_SOC_DAPM_SUPPLY("ADC Power", NAU8825_REG_ANALOG_ADC_2, 6, 0, NULL, 313 0), 314 315 /* ADC for button press detection */ 316 SND_SOC_DAPM_ADC("SAR", NULL, NAU8825_REG_SAR_CTRL, 317 NAU8825_SAR_ADC_EN_SFT, 0), 318 319 SND_SOC_DAPM_DAC("ADACL", NULL, NAU8825_REG_RDAC, 12, 0), 320 SND_SOC_DAPM_DAC("ADACR", NULL, NAU8825_REG_RDAC, 13, 0), 321 SND_SOC_DAPM_SUPPLY("ADACL Clock", NAU8825_REG_RDAC, 8, 0, NULL, 0), 322 SND_SOC_DAPM_SUPPLY("ADACR Clock", NAU8825_REG_RDAC, 9, 0, NULL, 0), 323 324 SND_SOC_DAPM_DAC("DDACR", NULL, NAU8825_REG_ENA_CTRL, 325 NAU8825_ENABLE_DACR_SFT, 0), 326 SND_SOC_DAPM_DAC("DDACL", NULL, NAU8825_REG_ENA_CTRL, 327 NAU8825_ENABLE_DACL_SFT, 0), 328 SND_SOC_DAPM_SUPPLY("DDAC Clock", NAU8825_REG_ENA_CTRL, 6, 0, NULL, 0), 329 330 SND_SOC_DAPM_MUX("DACL Mux", SND_SOC_NOPM, 0, 0, &nau8825_dacl_mux), 331 SND_SOC_DAPM_MUX("DACR Mux", SND_SOC_NOPM, 0, 0, &nau8825_dacr_mux), 332 333 SND_SOC_DAPM_PGA("HP amp L", NAU8825_REG_CLASSG_CTRL, 1, 0, NULL, 0), 334 SND_SOC_DAPM_PGA("HP amp R", NAU8825_REG_CLASSG_CTRL, 2, 0, NULL, 0), 335 SND_SOC_DAPM_SUPPLY("HP amp power", NAU8825_REG_CLASSG_CTRL, 0, 0, NULL, 336 0), 337 338 SND_SOC_DAPM_SUPPLY("Charge Pump", NAU8825_REG_CHARGE_PUMP, 5, 0, 339 nau8825_pump_event, SND_SOC_DAPM_POST_PMU), 340 341 SND_SOC_DAPM_PGA("Output Driver R Stage 1", 342 NAU8825_REG_POWER_UP_CONTROL, 5, 0, NULL, 0), 343 SND_SOC_DAPM_PGA("Output Driver L Stage 1", 344 NAU8825_REG_POWER_UP_CONTROL, 4, 0, NULL, 0), 345 SND_SOC_DAPM_PGA("Output Driver R Stage 2", 346 NAU8825_REG_POWER_UP_CONTROL, 3, 0, NULL, 0), 347 SND_SOC_DAPM_PGA("Output Driver L Stage 2", 348 NAU8825_REG_POWER_UP_CONTROL, 2, 0, NULL, 0), 349 SND_SOC_DAPM_PGA_S("Output Driver R Stage 3", 1, 350 NAU8825_REG_POWER_UP_CONTROL, 1, 0, NULL, 0), 351 SND_SOC_DAPM_PGA_S("Output Driver L Stage 3", 1, 352 NAU8825_REG_POWER_UP_CONTROL, 0, 0, NULL, 0), 353 354 SND_SOC_DAPM_PGA_S("Output DACL", 2, NAU8825_REG_CHARGE_PUMP, 8, 1, NULL, 0), 355 SND_SOC_DAPM_PGA_S("Output DACR", 2, NAU8825_REG_CHARGE_PUMP, 9, 1, NULL, 0), 356 357 SND_SOC_DAPM_OUTPUT("HPOL"), 358 SND_SOC_DAPM_OUTPUT("HPOR"), 359 }; 360 361 static const struct snd_soc_dapm_route nau8825_dapm_routes[] = { 362 {"Frontend PGA", NULL, "MIC"}, 363 {"ADC", NULL, "Frontend PGA"}, 364 {"ADC", NULL, "ADC Clock"}, 365 {"ADC", NULL, "ADC Power"}, 366 {"AIFTX", NULL, "ADC"}, 367 368 {"DDACL", NULL, "Playback"}, 369 {"DDACR", NULL, "Playback"}, 370 {"DDACL", NULL, "DDAC Clock"}, 371 {"DDACR", NULL, "DDAC Clock"}, 372 {"DACL Mux", "DACL", "DDACL"}, 373 {"DACL Mux", "DACR", "DDACR"}, 374 {"DACR Mux", "DACL", "DDACL"}, 375 {"DACR Mux", "DACR", "DDACR"}, 376 {"HP amp L", NULL, "DACL Mux"}, 377 {"HP amp R", NULL, "DACR Mux"}, 378 {"HP amp L", NULL, "HP amp power"}, 379 {"HP amp R", NULL, "HP amp power"}, 380 {"ADACL", NULL, "HP amp L"}, 381 {"ADACR", NULL, "HP amp R"}, 382 {"ADACL", NULL, "ADACL Clock"}, 383 {"ADACR", NULL, "ADACR Clock"}, 384 {"Output Driver L Stage 1", NULL, "ADACL"}, 385 {"Output Driver R Stage 1", NULL, "ADACR"}, 386 {"Output Driver L Stage 2", NULL, "Output Driver L Stage 1"}, 387 {"Output Driver R Stage 2", NULL, "Output Driver R Stage 1"}, 388 {"Output Driver L Stage 3", NULL, "Output Driver L Stage 2"}, 389 {"Output Driver R Stage 3", NULL, "Output Driver R Stage 2"}, 390 {"Output DACL", NULL, "Output Driver L Stage 3"}, 391 {"Output DACR", NULL, "Output Driver R Stage 3"}, 392 {"HPOL", NULL, "Output DACL"}, 393 {"HPOR", NULL, "Output DACR"}, 394 {"HPOL", NULL, "Charge Pump"}, 395 {"HPOR", NULL, "Charge Pump"}, 396 }; 397 398 static int nau8825_hw_params(struct snd_pcm_substream *substream, 399 struct snd_pcm_hw_params *params, 400 struct snd_soc_dai *dai) 401 { 402 struct snd_soc_codec *codec = dai->codec; 403 struct nau8825 *nau8825 = snd_soc_codec_get_drvdata(codec); 404 unsigned int val_len = 0; 405 406 switch (params_width(params)) { 407 case 16: 408 val_len |= NAU8825_I2S_DL_16; 409 break; 410 case 20: 411 val_len |= NAU8825_I2S_DL_20; 412 break; 413 case 24: 414 val_len |= NAU8825_I2S_DL_24; 415 break; 416 case 32: 417 val_len |= NAU8825_I2S_DL_32; 418 break; 419 default: 420 return -EINVAL; 421 } 422 423 regmap_update_bits(nau8825->regmap, NAU8825_REG_I2S_PCM_CTRL1, 424 NAU8825_I2S_DL_MASK, val_len); 425 426 return 0; 427 } 428 429 static int nau8825_set_dai_fmt(struct snd_soc_dai *codec_dai, unsigned int fmt) 430 { 431 struct snd_soc_codec *codec = codec_dai->codec; 432 struct nau8825 *nau8825 = snd_soc_codec_get_drvdata(codec); 433 unsigned int ctrl1_val = 0, ctrl2_val = 0; 434 435 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { 436 case SND_SOC_DAIFMT_CBM_CFM: 437 ctrl2_val |= NAU8825_I2S_MS_MASTER; 438 break; 439 case SND_SOC_DAIFMT_CBS_CFS: 440 break; 441 default: 442 return -EINVAL; 443 } 444 445 switch (fmt & SND_SOC_DAIFMT_INV_MASK) { 446 case SND_SOC_DAIFMT_NB_NF: 447 break; 448 case SND_SOC_DAIFMT_IB_NF: 449 ctrl1_val |= NAU8825_I2S_BP_INV; 450 break; 451 default: 452 return -EINVAL; 453 } 454 455 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { 456 case SND_SOC_DAIFMT_I2S: 457 ctrl1_val |= NAU8825_I2S_DF_I2S; 458 break; 459 case SND_SOC_DAIFMT_LEFT_J: 460 ctrl1_val |= NAU8825_I2S_DF_LEFT; 461 break; 462 case SND_SOC_DAIFMT_RIGHT_J: 463 ctrl1_val |= NAU8825_I2S_DF_RIGTH; 464 break; 465 case SND_SOC_DAIFMT_DSP_A: 466 ctrl1_val |= NAU8825_I2S_DF_PCM_AB; 467 break; 468 case SND_SOC_DAIFMT_DSP_B: 469 ctrl1_val |= NAU8825_I2S_DF_PCM_AB; 470 ctrl1_val |= NAU8825_I2S_PCMB_EN; 471 break; 472 default: 473 return -EINVAL; 474 } 475 476 regmap_update_bits(nau8825->regmap, NAU8825_REG_I2S_PCM_CTRL1, 477 NAU8825_I2S_DL_MASK | NAU8825_I2S_DF_MASK | 478 NAU8825_I2S_BP_MASK | NAU8825_I2S_PCMB_MASK, 479 ctrl1_val); 480 regmap_update_bits(nau8825->regmap, NAU8825_REG_I2S_PCM_CTRL2, 481 NAU8825_I2S_MS_MASK, ctrl2_val); 482 483 return 0; 484 } 485 486 static const struct snd_soc_dai_ops nau8825_dai_ops = { 487 .hw_params = nau8825_hw_params, 488 .set_fmt = nau8825_set_dai_fmt, 489 }; 490 491 #define NAU8825_RATES SNDRV_PCM_RATE_8000_192000 492 #define NAU8825_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE \ 493 | SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S32_LE) 494 495 static struct snd_soc_dai_driver nau8825_dai = { 496 .name = "nau8825-hifi", 497 .playback = { 498 .stream_name = "Playback", 499 .channels_min = 1, 500 .channels_max = 2, 501 .rates = NAU8825_RATES, 502 .formats = NAU8825_FORMATS, 503 }, 504 .capture = { 505 .stream_name = "Capture", 506 .channels_min = 1, 507 .channels_max = 1, 508 .rates = NAU8825_RATES, 509 .formats = NAU8825_FORMATS, 510 }, 511 .ops = &nau8825_dai_ops, 512 }; 513 514 /** 515 * nau8825_enable_jack_detect - Specify a jack for event reporting 516 * 517 * @component: component to register the jack with 518 * @jack: jack to use to report headset and button events on 519 * 520 * After this function has been called the headset insert/remove and button 521 * events will be routed to the given jack. Jack can be null to stop 522 * reporting. 523 */ 524 int nau8825_enable_jack_detect(struct snd_soc_codec *codec, 525 struct snd_soc_jack *jack) 526 { 527 struct nau8825 *nau8825 = snd_soc_codec_get_drvdata(codec); 528 struct regmap *regmap = nau8825->regmap; 529 530 nau8825->jack = jack; 531 532 /* Ground HP Outputs[1:0], needed for headset auto detection 533 * Enable Automatic Mic/Gnd switching reading on insert interrupt[6] 534 */ 535 regmap_update_bits(regmap, NAU8825_REG_HSD_CTRL, 536 NAU8825_HSD_AUTO_MODE | NAU8825_SPKR_DWN1R | NAU8825_SPKR_DWN1L, 537 NAU8825_HSD_AUTO_MODE | NAU8825_SPKR_DWN1R | NAU8825_SPKR_DWN1L); 538 539 regmap_update_bits(regmap, NAU8825_REG_INTERRUPT_MASK, 540 NAU8825_IRQ_HEADSET_COMPLETE_EN | NAU8825_IRQ_EJECT_EN, 0); 541 542 return 0; 543 } 544 EXPORT_SYMBOL_GPL(nau8825_enable_jack_detect); 545 546 547 static bool nau8825_is_jack_inserted(struct regmap *regmap) 548 { 549 int status; 550 551 regmap_read(regmap, NAU8825_REG_I2C_DEVICE_ID, &status); 552 return !(status & NAU8825_GPIO2JD1); 553 } 554 555 static void nau8825_restart_jack_detection(struct regmap *regmap) 556 { 557 /* this will restart the entire jack detection process including MIC/GND 558 * switching and create interrupts. We have to go from 0 to 1 and back 559 * to 0 to restart. 560 */ 561 regmap_update_bits(regmap, NAU8825_REG_JACK_DET_CTRL, 562 NAU8825_JACK_DET_RESTART, NAU8825_JACK_DET_RESTART); 563 regmap_update_bits(regmap, NAU8825_REG_JACK_DET_CTRL, 564 NAU8825_JACK_DET_RESTART, 0); 565 } 566 567 static void nau8825_eject_jack(struct nau8825 *nau8825) 568 { 569 struct snd_soc_dapm_context *dapm = nau8825->dapm; 570 struct regmap *regmap = nau8825->regmap; 571 572 snd_soc_dapm_disable_pin(dapm, "SAR"); 573 snd_soc_dapm_disable_pin(dapm, "MICBIAS"); 574 /* Detach 2kOhm Resistors from MICBIAS to MICGND1/2 */ 575 regmap_update_bits(regmap, NAU8825_REG_MIC_BIAS, 576 NAU8825_MICBIAS_JKSLV | NAU8825_MICBIAS_JKR2, 0); 577 /* ground HPL/HPR, MICGRND1/2 */ 578 regmap_update_bits(regmap, NAU8825_REG_HSD_CTRL, 0xf, 0xf); 579 580 snd_soc_dapm_sync(dapm); 581 } 582 583 static int nau8825_button_decode(int value) 584 { 585 int buttons = 0; 586 587 /* The chip supports up to 8 buttons, but ALSA defines only 6 buttons */ 588 if (value & BIT(0)) 589 buttons |= SND_JACK_BTN_0; 590 if (value & BIT(1)) 591 buttons |= SND_JACK_BTN_1; 592 if (value & BIT(2)) 593 buttons |= SND_JACK_BTN_2; 594 if (value & BIT(3)) 595 buttons |= SND_JACK_BTN_3; 596 if (value & BIT(4)) 597 buttons |= SND_JACK_BTN_4; 598 if (value & BIT(5)) 599 buttons |= SND_JACK_BTN_5; 600 601 return buttons; 602 } 603 604 static int nau8825_jack_insert(struct nau8825 *nau8825) 605 { 606 struct regmap *regmap = nau8825->regmap; 607 struct snd_soc_dapm_context *dapm = nau8825->dapm; 608 int jack_status_reg, mic_detected; 609 int type = 0; 610 611 regmap_read(regmap, NAU8825_REG_GENERAL_STATUS, &jack_status_reg); 612 mic_detected = (jack_status_reg >> 10) & 3; 613 614 switch (mic_detected) { 615 case 0: 616 /* no mic */ 617 type = SND_JACK_HEADPHONE; 618 break; 619 case 1: 620 dev_dbg(nau8825->dev, "OMTP (micgnd1) mic connected\n"); 621 type = SND_JACK_HEADSET; 622 623 /* Unground MICGND1 */ 624 regmap_update_bits(regmap, NAU8825_REG_HSD_CTRL, 3 << 2, 625 1 << 2); 626 /* Attach 2kOhm Resistor from MICBIAS to MICGND1 */ 627 regmap_update_bits(regmap, NAU8825_REG_MIC_BIAS, 628 NAU8825_MICBIAS_JKSLV | NAU8825_MICBIAS_JKR2, 629 NAU8825_MICBIAS_JKR2); 630 /* Attach SARADC to MICGND1 */ 631 regmap_update_bits(regmap, NAU8825_REG_SAR_CTRL, 632 NAU8825_SAR_INPUT_MASK, 633 NAU8825_SAR_INPUT_JKR2); 634 635 snd_soc_dapm_force_enable_pin(dapm, "MICBIAS"); 636 snd_soc_dapm_force_enable_pin(dapm, "SAR"); 637 snd_soc_dapm_sync(dapm); 638 break; 639 case 2: 640 case 3: 641 dev_dbg(nau8825->dev, "CTIA (micgnd2) mic connected\n"); 642 type = SND_JACK_HEADSET; 643 644 /* Unground MICGND2 */ 645 regmap_update_bits(regmap, NAU8825_REG_HSD_CTRL, 3 << 2, 646 2 << 2); 647 /* Attach 2kOhm Resistor from MICBIAS to MICGND2 */ 648 regmap_update_bits(regmap, NAU8825_REG_MIC_BIAS, 649 NAU8825_MICBIAS_JKSLV | NAU8825_MICBIAS_JKR2, 650 NAU8825_MICBIAS_JKSLV); 651 /* Attach SARADC to MICGND2 */ 652 regmap_update_bits(regmap, NAU8825_REG_SAR_CTRL, 653 NAU8825_SAR_INPUT_MASK, 654 NAU8825_SAR_INPUT_JKSLV); 655 656 snd_soc_dapm_force_enable_pin(dapm, "MICBIAS"); 657 snd_soc_dapm_force_enable_pin(dapm, "SAR"); 658 snd_soc_dapm_sync(dapm); 659 break; 660 } 661 662 if (type & SND_JACK_HEADPHONE) { 663 /* Unground HPL/R */ 664 regmap_update_bits(regmap, NAU8825_REG_HSD_CTRL, 0x3, 0); 665 } 666 667 return type; 668 } 669 670 #define NAU8825_BUTTONS (SND_JACK_BTN_0 | SND_JACK_BTN_1 | \ 671 SND_JACK_BTN_2 | SND_JACK_BTN_3) 672 673 static irqreturn_t nau8825_interrupt(int irq, void *data) 674 { 675 struct nau8825 *nau8825 = (struct nau8825 *)data; 676 struct regmap *regmap = nau8825->regmap; 677 int active_irq, clear_irq = 0, event = 0, event_mask = 0; 678 679 regmap_read(regmap, NAU8825_REG_IRQ_STATUS, &active_irq); 680 681 if ((active_irq & NAU8825_JACK_EJECTION_IRQ_MASK) == 682 NAU8825_JACK_EJECTION_DETECTED) { 683 684 nau8825_eject_jack(nau8825); 685 event_mask |= SND_JACK_HEADSET; 686 clear_irq = NAU8825_JACK_EJECTION_IRQ_MASK; 687 } else if (active_irq & NAU8825_KEY_SHORT_PRESS_IRQ) { 688 int key_status; 689 690 regmap_read(regmap, NAU8825_REG_INT_CLR_KEY_STATUS, 691 &key_status); 692 693 /* upper 8 bits of the register are for short pressed keys, 694 * lower 8 bits - for long pressed buttons 695 */ 696 nau8825->button_pressed = nau8825_button_decode( 697 key_status >> 8); 698 699 event |= nau8825->button_pressed; 700 event_mask |= NAU8825_BUTTONS; 701 clear_irq = NAU8825_KEY_SHORT_PRESS_IRQ; 702 } else if (active_irq & NAU8825_KEY_RELEASE_IRQ) { 703 event_mask = NAU8825_BUTTONS; 704 clear_irq = NAU8825_KEY_RELEASE_IRQ; 705 } else if (active_irq & NAU8825_HEADSET_COMPLETION_IRQ) { 706 if (nau8825_is_jack_inserted(regmap)) { 707 event |= nau8825_jack_insert(nau8825); 708 } else { 709 dev_warn(nau8825->dev, "Headset completion IRQ fired but no headset connected\n"); 710 nau8825_eject_jack(nau8825); 711 } 712 713 event_mask |= SND_JACK_HEADSET; 714 clear_irq = NAU8825_HEADSET_COMPLETION_IRQ; 715 } 716 717 if (!clear_irq) 718 clear_irq = active_irq; 719 /* clears the rightmost interruption */ 720 regmap_write(regmap, NAU8825_REG_INT_CLR_KEY_STATUS, clear_irq); 721 722 if (event_mask) 723 snd_soc_jack_report(nau8825->jack, event, event_mask); 724 725 return IRQ_HANDLED; 726 } 727 728 static void nau8825_setup_buttons(struct nau8825 *nau8825) 729 { 730 struct regmap *regmap = nau8825->regmap; 731 732 regmap_update_bits(regmap, NAU8825_REG_SAR_CTRL, 733 NAU8825_SAR_TRACKING_GAIN_MASK, 734 nau8825->sar_voltage << NAU8825_SAR_TRACKING_GAIN_SFT); 735 regmap_update_bits(regmap, NAU8825_REG_SAR_CTRL, 736 NAU8825_SAR_COMPARE_TIME_MASK, 737 nau8825->sar_compare_time << NAU8825_SAR_COMPARE_TIME_SFT); 738 regmap_update_bits(regmap, NAU8825_REG_SAR_CTRL, 739 NAU8825_SAR_SAMPLING_TIME_MASK, 740 nau8825->sar_sampling_time << NAU8825_SAR_SAMPLING_TIME_SFT); 741 742 regmap_update_bits(regmap, NAU8825_REG_KEYDET_CTRL, 743 NAU8825_KEYDET_LEVELS_NR_MASK, 744 (nau8825->sar_threshold_num - 1) << NAU8825_KEYDET_LEVELS_NR_SFT); 745 regmap_update_bits(regmap, NAU8825_REG_KEYDET_CTRL, 746 NAU8825_KEYDET_HYSTERESIS_MASK, 747 nau8825->sar_hysteresis << NAU8825_KEYDET_HYSTERESIS_SFT); 748 regmap_update_bits(regmap, NAU8825_REG_KEYDET_CTRL, 749 NAU8825_KEYDET_SHORTKEY_DEBOUNCE_MASK, 750 nau8825->key_debounce << NAU8825_KEYDET_SHORTKEY_DEBOUNCE_SFT); 751 752 regmap_write(regmap, NAU8825_REG_VDET_THRESHOLD_1, 753 (nau8825->sar_threshold[0] << 8) | nau8825->sar_threshold[1]); 754 regmap_write(regmap, NAU8825_REG_VDET_THRESHOLD_2, 755 (nau8825->sar_threshold[2] << 8) | nau8825->sar_threshold[3]); 756 regmap_write(regmap, NAU8825_REG_VDET_THRESHOLD_3, 757 (nau8825->sar_threshold[4] << 8) | nau8825->sar_threshold[5]); 758 regmap_write(regmap, NAU8825_REG_VDET_THRESHOLD_4, 759 (nau8825->sar_threshold[6] << 8) | nau8825->sar_threshold[7]); 760 761 /* Enable short press and release interruptions */ 762 regmap_update_bits(regmap, NAU8825_REG_INTERRUPT_MASK, 763 NAU8825_IRQ_KEY_SHORT_PRESS_EN | NAU8825_IRQ_KEY_RELEASE_EN, 764 0); 765 } 766 767 static void nau8825_init_regs(struct nau8825 *nau8825) 768 { 769 struct regmap *regmap = nau8825->regmap; 770 771 /* Enable Bias/Vmid */ 772 regmap_update_bits(nau8825->regmap, NAU8825_REG_BIAS_ADJ, 773 NAU8825_BIAS_VMID, NAU8825_BIAS_VMID); 774 regmap_update_bits(nau8825->regmap, NAU8825_REG_BOOST, 775 NAU8825_GLOBAL_BIAS_EN, NAU8825_GLOBAL_BIAS_EN); 776 777 /* VMID Tieoff */ 778 regmap_update_bits(regmap, NAU8825_REG_BIAS_ADJ, 779 NAU8825_BIAS_VMID_SEL_MASK, 780 nau8825->vref_impedance << NAU8825_BIAS_VMID_SEL_SFT); 781 /* Disable Boost Driver, Automatic Short circuit protection enable */ 782 regmap_update_bits(regmap, NAU8825_REG_BOOST, 783 NAU8825_PRECHARGE_DIS | NAU8825_HP_BOOST_G_DIS | 784 NAU8825_SHORT_SHUTDOWN_EN, 785 NAU8825_PRECHARGE_DIS | NAU8825_HP_BOOST_G_DIS | 786 NAU8825_SHORT_SHUTDOWN_EN); 787 788 regmap_update_bits(regmap, NAU8825_REG_GPIO12_CTRL, 789 NAU8825_JKDET_OUTPUT_EN, 790 nau8825->jkdet_enable ? 0 : NAU8825_JKDET_OUTPUT_EN); 791 regmap_update_bits(regmap, NAU8825_REG_GPIO12_CTRL, 792 NAU8825_JKDET_PULL_EN, 793 nau8825->jkdet_pull_enable ? 0 : NAU8825_JKDET_PULL_EN); 794 regmap_update_bits(regmap, NAU8825_REG_GPIO12_CTRL, 795 NAU8825_JKDET_PULL_UP, 796 nau8825->jkdet_pull_up ? NAU8825_JKDET_PULL_UP : 0); 797 regmap_update_bits(regmap, NAU8825_REG_JACK_DET_CTRL, 798 NAU8825_JACK_POLARITY, 799 /* jkdet_polarity - 1 is for active-low */ 800 nau8825->jkdet_polarity ? 0 : NAU8825_JACK_POLARITY); 801 802 regmap_update_bits(regmap, NAU8825_REG_JACK_DET_CTRL, 803 NAU8825_JACK_INSERT_DEBOUNCE_MASK, 804 nau8825->jack_insert_debounce << NAU8825_JACK_INSERT_DEBOUNCE_SFT); 805 regmap_update_bits(regmap, NAU8825_REG_JACK_DET_CTRL, 806 NAU8825_JACK_EJECT_DEBOUNCE_MASK, 807 nau8825->jack_eject_debounce << NAU8825_JACK_EJECT_DEBOUNCE_SFT); 808 809 /* Mask unneeded IRQs: 1 - disable, 0 - enable */ 810 regmap_update_bits(regmap, NAU8825_REG_INTERRUPT_MASK, 0x7ff, 0x7ff); 811 812 regmap_update_bits(regmap, NAU8825_REG_MIC_BIAS, 813 NAU8825_MICBIAS_VOLTAGE_MASK, nau8825->micbias_voltage); 814 815 if (nau8825->sar_threshold_num) 816 nau8825_setup_buttons(nau8825); 817 818 /* Default oversampling/decimations settings are unusable 819 * (audible hiss). Set it to something better. 820 */ 821 regmap_update_bits(regmap, NAU8825_REG_ADC_RATE, 822 NAU8825_ADC_SYNC_DOWN_MASK, NAU8825_ADC_SYNC_DOWN_128); 823 regmap_update_bits(regmap, NAU8825_REG_DAC_CTRL1, 824 NAU8825_DAC_OVERSAMPLE_MASK, NAU8825_DAC_OVERSAMPLE_128); 825 } 826 827 static const struct regmap_config nau8825_regmap_config = { 828 .val_bits = 16, 829 .reg_bits = 16, 830 831 .max_register = NAU8825_REG_MAX, 832 .readable_reg = nau8825_readable_reg, 833 .writeable_reg = nau8825_writeable_reg, 834 .volatile_reg = nau8825_volatile_reg, 835 836 .cache_type = REGCACHE_RBTREE, 837 .reg_defaults = nau8825_reg_defaults, 838 .num_reg_defaults = ARRAY_SIZE(nau8825_reg_defaults), 839 }; 840 841 static int nau8825_codec_probe(struct snd_soc_codec *codec) 842 { 843 struct nau8825 *nau8825 = snd_soc_codec_get_drvdata(codec); 844 struct snd_soc_dapm_context *dapm = snd_soc_codec_get_dapm(codec); 845 846 nau8825->dapm = dapm; 847 848 /* The interrupt clock is gated by x1[10:8], 849 * one of them needs to be enabled all the time for 850 * interrupts to happen. 851 */ 852 snd_soc_dapm_force_enable_pin(dapm, "DDACR"); 853 snd_soc_dapm_sync(dapm); 854 855 /* Unmask interruptions. Handler uses dapm object so we can enable 856 * interruptions only after dapm is fully initialized. 857 */ 858 regmap_write(nau8825->regmap, NAU8825_REG_INTERRUPT_DIS_CTRL, 0); 859 nau8825_restart_jack_detection(nau8825->regmap); 860 861 return 0; 862 } 863 864 /** 865 * nau8825_calc_fll_param - Calculate FLL parameters. 866 * @fll_in: external clock provided to codec. 867 * @fs: sampling rate. 868 * @fll_param: Pointer to structure of FLL parameters. 869 * 870 * Calculate FLL parameters to configure codec. 871 * 872 * Returns 0 for success or negative error code. 873 */ 874 static int nau8825_calc_fll_param(unsigned int fll_in, unsigned int fs, 875 struct nau8825_fll *fll_param) 876 { 877 u64 fvco; 878 unsigned int fref, i; 879 880 /* Ensure the reference clock frequency (FREF) is <= 13.5MHz by dividing 881 * freq_in by 1, 2, 4, or 8 using FLL pre-scalar. 882 * FREF = freq_in / NAU8825_FLL_REF_DIV_MASK 883 */ 884 for (i = 0; i < ARRAY_SIZE(fll_pre_scalar); i++) { 885 fref = fll_in / fll_pre_scalar[i].param; 886 if (fref <= NAU_FREF_MAX) 887 break; 888 } 889 if (i == ARRAY_SIZE(fll_pre_scalar)) 890 return -EINVAL; 891 fll_param->clk_ref_div = fll_pre_scalar[i].val; 892 893 /* Choose the FLL ratio based on FREF */ 894 for (i = 0; i < ARRAY_SIZE(fll_ratio); i++) { 895 if (fref >= fll_ratio[i].param) 896 break; 897 } 898 if (i == ARRAY_SIZE(fll_ratio)) 899 return -EINVAL; 900 fll_param->ratio = fll_ratio[i].val; 901 902 /* Calculate the frequency of DCO (FDCO) given freq_out = 256 * Fs. 903 * FDCO must be within the 90MHz - 100MHz or the FFL cannot be 904 * guaranteed across the full range of operation. 905 * FDCO = freq_out * 2 * mclk_src_scaling 906 */ 907 for (i = 0; i < ARRAY_SIZE(mclk_src_scaling); i++) { 908 fvco = 256 * fs * 2 * mclk_src_scaling[i].param; 909 if (NAU_FVCO_MIN < fvco && fvco < NAU_FVCO_MAX) 910 break; 911 } 912 if (i == ARRAY_SIZE(mclk_src_scaling)) 913 return -EINVAL; 914 fll_param->mclk_src = mclk_src_scaling[i].val; 915 916 /* Calculate the FLL 10-bit integer input and the FLL 16-bit fractional 917 * input based on FDCO, FREF and FLL ratio. 918 */ 919 fvco = div_u64(fvco << 16, fref * fll_param->ratio); 920 fll_param->fll_int = (fvco >> 16) & 0x3FF; 921 fll_param->fll_frac = fvco & 0xFFFF; 922 return 0; 923 } 924 925 static void nau8825_fll_apply(struct nau8825 *nau8825, 926 struct nau8825_fll *fll_param) 927 { 928 regmap_update_bits(nau8825->regmap, NAU8825_REG_CLK_DIVIDER, 929 NAU8825_CLK_MCLK_SRC_MASK, fll_param->mclk_src); 930 regmap_update_bits(nau8825->regmap, NAU8825_REG_FLL1, 931 NAU8825_FLL_RATIO_MASK, fll_param->ratio); 932 /* FLL 16-bit fractional input */ 933 regmap_write(nau8825->regmap, NAU8825_REG_FLL2, fll_param->fll_frac); 934 /* FLL 10-bit integer input */ 935 regmap_update_bits(nau8825->regmap, NAU8825_REG_FLL3, 936 NAU8825_FLL_INTEGER_MASK, fll_param->fll_int); 937 /* FLL pre-scaler */ 938 regmap_update_bits(nau8825->regmap, NAU8825_REG_FLL4, 939 NAU8825_FLL_REF_DIV_MASK, fll_param->clk_ref_div); 940 /* select divided VCO input */ 941 regmap_update_bits(nau8825->regmap, NAU8825_REG_FLL5, 942 NAU8825_FLL_FILTER_SW_MASK, 0x0000); 943 /* FLL sigma delta modulator enable */ 944 regmap_update_bits(nau8825->regmap, NAU8825_REG_FLL6, 945 NAU8825_SDM_EN_MASK, NAU8825_SDM_EN); 946 } 947 948 /* freq_out must be 256*Fs in order to achieve the best performance */ 949 static int nau8825_set_pll(struct snd_soc_codec *codec, int pll_id, int source, 950 unsigned int freq_in, unsigned int freq_out) 951 { 952 struct nau8825 *nau8825 = snd_soc_codec_get_drvdata(codec); 953 struct nau8825_fll fll_param; 954 int ret, fs; 955 956 fs = freq_out / 256; 957 ret = nau8825_calc_fll_param(freq_in, fs, &fll_param); 958 if (ret < 0) { 959 dev_err(codec->dev, "Unsupported input clock %d\n", freq_in); 960 return ret; 961 } 962 dev_dbg(codec->dev, "mclk_src=%x ratio=%x fll_frac=%x fll_int=%x clk_ref_div=%x\n", 963 fll_param.mclk_src, fll_param.ratio, fll_param.fll_frac, 964 fll_param.fll_int, fll_param.clk_ref_div); 965 966 nau8825_fll_apply(nau8825, &fll_param); 967 mdelay(2); 968 regmap_update_bits(nau8825->regmap, NAU8825_REG_CLK_DIVIDER, 969 NAU8825_CLK_SRC_MASK, NAU8825_CLK_SRC_VCO); 970 return 0; 971 } 972 973 static int nau8825_configure_sysclk(struct nau8825 *nau8825, int clk_id, 974 unsigned int freq) 975 { 976 struct regmap *regmap = nau8825->regmap; 977 int ret; 978 979 switch (clk_id) { 980 case NAU8825_CLK_MCLK: 981 regmap_update_bits(regmap, NAU8825_REG_CLK_DIVIDER, 982 NAU8825_CLK_SRC_MASK, NAU8825_CLK_SRC_MCLK); 983 regmap_update_bits(regmap, NAU8825_REG_FLL6, NAU8825_DCO_EN, 0); 984 985 /* We selected MCLK source but the clock itself managed externally */ 986 if (!nau8825->mclk) 987 break; 988 989 if (!nau8825->mclk_freq) { 990 ret = clk_prepare_enable(nau8825->mclk); 991 if (ret) { 992 dev_err(nau8825->dev, "Unable to prepare codec mclk\n"); 993 return ret; 994 } 995 } 996 997 if (nau8825->mclk_freq != freq) { 998 nau8825->mclk_freq = freq; 999 1000 freq = clk_round_rate(nau8825->mclk, freq); 1001 ret = clk_set_rate(nau8825->mclk, freq); 1002 if (ret) { 1003 dev_err(nau8825->dev, "Unable to set mclk rate\n"); 1004 return ret; 1005 } 1006 } 1007 1008 break; 1009 case NAU8825_CLK_INTERNAL: 1010 regmap_update_bits(regmap, NAU8825_REG_FLL6, NAU8825_DCO_EN, 1011 NAU8825_DCO_EN); 1012 regmap_update_bits(regmap, NAU8825_REG_CLK_DIVIDER, 1013 NAU8825_CLK_SRC_MASK, NAU8825_CLK_SRC_VCO); 1014 1015 if (nau8825->mclk_freq) { 1016 clk_disable_unprepare(nau8825->mclk); 1017 nau8825->mclk_freq = 0; 1018 } 1019 1020 break; 1021 default: 1022 dev_err(nau8825->dev, "Invalid clock id (%d)\n", clk_id); 1023 return -EINVAL; 1024 } 1025 1026 dev_dbg(nau8825->dev, "Sysclk is %dHz and clock id is %d\n", freq, 1027 clk_id); 1028 return 0; 1029 } 1030 1031 static int nau8825_set_sysclk(struct snd_soc_codec *codec, int clk_id, 1032 int source, unsigned int freq, int dir) 1033 { 1034 struct nau8825 *nau8825 = snd_soc_codec_get_drvdata(codec); 1035 1036 return nau8825_configure_sysclk(nau8825, clk_id, freq); 1037 } 1038 1039 static int nau8825_set_bias_level(struct snd_soc_codec *codec, 1040 enum snd_soc_bias_level level) 1041 { 1042 struct nau8825 *nau8825 = snd_soc_codec_get_drvdata(codec); 1043 int ret; 1044 1045 switch (level) { 1046 case SND_SOC_BIAS_ON: 1047 break; 1048 1049 case SND_SOC_BIAS_PREPARE: 1050 break; 1051 1052 case SND_SOC_BIAS_STANDBY: 1053 if (snd_soc_codec_get_bias_level(codec) == SND_SOC_BIAS_OFF) { 1054 if (nau8825->mclk_freq) { 1055 ret = clk_prepare_enable(nau8825->mclk); 1056 if (ret) { 1057 dev_err(nau8825->dev, "Unable to prepare codec mclk\n"); 1058 return ret; 1059 } 1060 } 1061 1062 ret = regcache_sync(nau8825->regmap); 1063 if (ret) { 1064 dev_err(codec->dev, 1065 "Failed to sync cache: %d\n", ret); 1066 return ret; 1067 } 1068 } 1069 1070 break; 1071 1072 case SND_SOC_BIAS_OFF: 1073 if (nau8825->mclk_freq) 1074 clk_disable_unprepare(nau8825->mclk); 1075 1076 regcache_mark_dirty(nau8825->regmap); 1077 break; 1078 } 1079 return 0; 1080 } 1081 1082 static struct snd_soc_codec_driver nau8825_codec_driver = { 1083 .probe = nau8825_codec_probe, 1084 .set_sysclk = nau8825_set_sysclk, 1085 .set_pll = nau8825_set_pll, 1086 .set_bias_level = nau8825_set_bias_level, 1087 .suspend_bias_off = true, 1088 1089 .controls = nau8825_controls, 1090 .num_controls = ARRAY_SIZE(nau8825_controls), 1091 .dapm_widgets = nau8825_dapm_widgets, 1092 .num_dapm_widgets = ARRAY_SIZE(nau8825_dapm_widgets), 1093 .dapm_routes = nau8825_dapm_routes, 1094 .num_dapm_routes = ARRAY_SIZE(nau8825_dapm_routes), 1095 }; 1096 1097 static void nau8825_reset_chip(struct regmap *regmap) 1098 { 1099 regmap_write(regmap, NAU8825_REG_RESET, 0x00); 1100 regmap_write(regmap, NAU8825_REG_RESET, 0x00); 1101 } 1102 1103 static void nau8825_print_device_properties(struct nau8825 *nau8825) 1104 { 1105 int i; 1106 struct device *dev = nau8825->dev; 1107 1108 dev_dbg(dev, "jkdet-enable: %d\n", nau8825->jkdet_enable); 1109 dev_dbg(dev, "jkdet-pull-enable: %d\n", nau8825->jkdet_pull_enable); 1110 dev_dbg(dev, "jkdet-pull-up: %d\n", nau8825->jkdet_pull_up); 1111 dev_dbg(dev, "jkdet-polarity: %d\n", nau8825->jkdet_polarity); 1112 dev_dbg(dev, "micbias-voltage: %d\n", nau8825->micbias_voltage); 1113 dev_dbg(dev, "vref-impedance: %d\n", nau8825->vref_impedance); 1114 1115 dev_dbg(dev, "sar-threshold-num: %d\n", nau8825->sar_threshold_num); 1116 for (i = 0; i < nau8825->sar_threshold_num; i++) 1117 dev_dbg(dev, "sar-threshold[%d]=%d\n", i, 1118 nau8825->sar_threshold[i]); 1119 1120 dev_dbg(dev, "sar-hysteresis: %d\n", nau8825->sar_hysteresis); 1121 dev_dbg(dev, "sar-voltage: %d\n", nau8825->sar_voltage); 1122 dev_dbg(dev, "sar-compare-time: %d\n", nau8825->sar_compare_time); 1123 dev_dbg(dev, "sar-sampling-time: %d\n", nau8825->sar_sampling_time); 1124 dev_dbg(dev, "short-key-debounce: %d\n", nau8825->key_debounce); 1125 dev_dbg(dev, "jack-insert-debounce: %d\n", 1126 nau8825->jack_insert_debounce); 1127 dev_dbg(dev, "jack-eject-debounce: %d\n", 1128 nau8825->jack_eject_debounce); 1129 } 1130 1131 static int nau8825_read_device_properties(struct device *dev, 1132 struct nau8825 *nau8825) { 1133 1134 nau8825->jkdet_enable = device_property_read_bool(dev, 1135 "nuvoton,jkdet-enable"); 1136 nau8825->jkdet_pull_enable = device_property_read_bool(dev, 1137 "nuvoton,jkdet-pull-enable"); 1138 nau8825->jkdet_pull_up = device_property_read_bool(dev, 1139 "nuvoton,jkdet-pull-up"); 1140 device_property_read_u32(dev, "nuvoton,jkdet-polarity", 1141 &nau8825->jkdet_polarity); 1142 device_property_read_u32(dev, "nuvoton,micbias-voltage", 1143 &nau8825->micbias_voltage); 1144 device_property_read_u32(dev, "nuvoton,vref-impedance", 1145 &nau8825->vref_impedance); 1146 device_property_read_u32(dev, "nuvoton,sar-threshold-num", 1147 &nau8825->sar_threshold_num); 1148 device_property_read_u32_array(dev, "nuvoton,sar-threshold", 1149 nau8825->sar_threshold, nau8825->sar_threshold_num); 1150 device_property_read_u32(dev, "nuvoton,sar-hysteresis", 1151 &nau8825->sar_hysteresis); 1152 device_property_read_u32(dev, "nuvoton,sar-voltage", 1153 &nau8825->sar_voltage); 1154 device_property_read_u32(dev, "nuvoton,sar-compare-time", 1155 &nau8825->sar_compare_time); 1156 device_property_read_u32(dev, "nuvoton,sar-sampling-time", 1157 &nau8825->sar_sampling_time); 1158 device_property_read_u32(dev, "nuvoton,short-key-debounce", 1159 &nau8825->key_debounce); 1160 device_property_read_u32(dev, "nuvoton,jack-insert-debounce", 1161 &nau8825->jack_insert_debounce); 1162 device_property_read_u32(dev, "nuvoton,jack-eject-debounce", 1163 &nau8825->jack_eject_debounce); 1164 1165 nau8825->mclk = devm_clk_get(dev, "mclk"); 1166 if (PTR_ERR(nau8825->mclk) == -EPROBE_DEFER) { 1167 return -EPROBE_DEFER; 1168 } else if (PTR_ERR(nau8825->mclk) == -ENOENT) { 1169 /* The MCLK is managed externally or not used at all */ 1170 nau8825->mclk = NULL; 1171 dev_info(dev, "No 'mclk' clock found, assume MCLK is managed externally"); 1172 } else if (IS_ERR(nau8825->mclk)) { 1173 return -EINVAL; 1174 } 1175 1176 return 0; 1177 } 1178 1179 static int nau8825_setup_irq(struct nau8825 *nau8825) 1180 { 1181 struct regmap *regmap = nau8825->regmap; 1182 int ret; 1183 1184 /* IRQ Output Enable */ 1185 regmap_update_bits(regmap, NAU8825_REG_INTERRUPT_MASK, 1186 NAU8825_IRQ_OUTPUT_EN, NAU8825_IRQ_OUTPUT_EN); 1187 1188 /* Enable internal VCO needed for interruptions */ 1189 nau8825_configure_sysclk(nau8825, NAU8825_CLK_INTERNAL, 0); 1190 1191 /* Enable DDACR needed for interrupts 1192 * It is the same as force_enable_pin("DDACR") we do later 1193 */ 1194 regmap_update_bits(regmap, NAU8825_REG_ENA_CTRL, 1195 NAU8825_ENABLE_DACR, NAU8825_ENABLE_DACR); 1196 1197 /* Chip needs one FSCLK cycle in order to generate interrupts, 1198 * as we cannot guarantee one will be provided by the system. Turning 1199 * master mode on then off enables us to generate that FSCLK cycle 1200 * with a minimum of contention on the clock bus. 1201 */ 1202 regmap_update_bits(regmap, NAU8825_REG_I2S_PCM_CTRL2, 1203 NAU8825_I2S_MS_MASK, NAU8825_I2S_MS_MASTER); 1204 regmap_update_bits(regmap, NAU8825_REG_I2S_PCM_CTRL2, 1205 NAU8825_I2S_MS_MASK, NAU8825_I2S_MS_SLAVE); 1206 1207 ret = devm_request_threaded_irq(nau8825->dev, nau8825->irq, NULL, 1208 nau8825_interrupt, IRQF_TRIGGER_LOW | IRQF_ONESHOT, 1209 "nau8825", nau8825); 1210 1211 if (ret) { 1212 dev_err(nau8825->dev, "Cannot request irq %d (%d)\n", 1213 nau8825->irq, ret); 1214 return ret; 1215 } 1216 1217 return 0; 1218 } 1219 1220 static int nau8825_i2c_probe(struct i2c_client *i2c, 1221 const struct i2c_device_id *id) 1222 { 1223 struct device *dev = &i2c->dev; 1224 struct nau8825 *nau8825 = dev_get_platdata(&i2c->dev); 1225 int ret, value; 1226 1227 if (!nau8825) { 1228 nau8825 = devm_kzalloc(dev, sizeof(*nau8825), GFP_KERNEL); 1229 if (!nau8825) 1230 return -ENOMEM; 1231 ret = nau8825_read_device_properties(dev, nau8825); 1232 if (ret) 1233 return ret; 1234 } 1235 1236 i2c_set_clientdata(i2c, nau8825); 1237 1238 nau8825->regmap = devm_regmap_init_i2c(i2c, &nau8825_regmap_config); 1239 if (IS_ERR(nau8825->regmap)) 1240 return PTR_ERR(nau8825->regmap); 1241 nau8825->dev = dev; 1242 nau8825->irq = i2c->irq; 1243 1244 nau8825_print_device_properties(nau8825); 1245 1246 nau8825_reset_chip(nau8825->regmap); 1247 ret = regmap_read(nau8825->regmap, NAU8825_REG_I2C_DEVICE_ID, &value); 1248 if (ret < 0) { 1249 dev_err(dev, "Failed to read device id from the NAU8825: %d\n", 1250 ret); 1251 return ret; 1252 } 1253 if ((value & NAU8825_SOFTWARE_ID_MASK) != 1254 NAU8825_SOFTWARE_ID_NAU8825) { 1255 dev_err(dev, "Not a NAU8825 chip\n"); 1256 return -ENODEV; 1257 } 1258 1259 nau8825_init_regs(nau8825); 1260 1261 if (i2c->irq) 1262 nau8825_setup_irq(nau8825); 1263 1264 return snd_soc_register_codec(&i2c->dev, &nau8825_codec_driver, 1265 &nau8825_dai, 1); 1266 } 1267 1268 static int nau8825_i2c_remove(struct i2c_client *client) 1269 { 1270 snd_soc_unregister_codec(&client->dev); 1271 return 0; 1272 } 1273 1274 static const struct i2c_device_id nau8825_i2c_ids[] = { 1275 { "nau8825", 0 }, 1276 { } 1277 }; 1278 1279 #ifdef CONFIG_OF 1280 static const struct of_device_id nau8825_of_ids[] = { 1281 { .compatible = "nuvoton,nau8825", }, 1282 {} 1283 }; 1284 MODULE_DEVICE_TABLE(of, nau8825_of_ids); 1285 #endif 1286 1287 #ifdef CONFIG_ACPI 1288 static const struct acpi_device_id nau8825_acpi_match[] = { 1289 { "10508825", 0 }, 1290 {}, 1291 }; 1292 MODULE_DEVICE_TABLE(acpi, nau8825_acpi_match); 1293 #endif 1294 1295 static struct i2c_driver nau8825_driver = { 1296 .driver = { 1297 .name = "nau8825", 1298 .of_match_table = of_match_ptr(nau8825_of_ids), 1299 .acpi_match_table = ACPI_PTR(nau8825_acpi_match), 1300 }, 1301 .probe = nau8825_i2c_probe, 1302 .remove = nau8825_i2c_remove, 1303 .id_table = nau8825_i2c_ids, 1304 }; 1305 module_i2c_driver(nau8825_driver); 1306 1307 MODULE_DESCRIPTION("ASoC nau8825 driver"); 1308 MODULE_AUTHOR("Anatol Pomozov <anatol@chromium.org>"); 1309 MODULE_LICENSE("GPL"); 1310