1 // SPDX-License-Identifier: GPL-2.0 2 // 3 // MAX9867 ALSA SoC codec driver 4 // 5 // Copyright 2013-2015 Maxim Integrated Products 6 // Copyright 2018 Ladislav Michl <ladis@linux-mips.org> 7 // 8 9 #include <linux/delay.h> 10 #include <linux/i2c.h> 11 #include <linux/module.h> 12 #include <linux/regmap.h> 13 #include <sound/pcm_params.h> 14 #include <sound/soc.h> 15 #include <sound/tlv.h> 16 #include "max9867.h" 17 18 struct max9867_priv { 19 struct regmap *regmap; 20 const struct snd_pcm_hw_constraint_list *constraints; 21 unsigned int sysclk, pclk; 22 bool provider, dsp_a; 23 unsigned int adc_dac_active; 24 }; 25 26 static const char *const max9867_spmode[] = { 27 "Stereo Diff", "Mono Diff", 28 "Stereo Cap", "Mono Cap", 29 "Stereo Single", "Mono Single", 30 "Stereo Single Fast", "Mono Single Fast" 31 }; 32 static const char *const max9867_filter_text[] = {"IIR", "FIR"}; 33 34 static const char *const max9867_adc_dac_filter_text[] = { 35 "Disabled", 36 "Elliptical/16/256", 37 "Butterworth/16/500", 38 "Elliptical/8/256", 39 "Butterworth/8/500", 40 "Butterworth/8-24" 41 }; 42 43 enum max9867_adc_dac { 44 MAX9867_ADC_LEFT, 45 MAX9867_ADC_RIGHT, 46 MAX9867_DAC_LEFT, 47 MAX9867_DAC_RIGHT, 48 }; 49 50 static int max9867_adc_dac_event(struct snd_soc_dapm_widget *w, 51 struct snd_kcontrol *kcontrol, int event) 52 { 53 struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm); 54 struct max9867_priv *max9867 = snd_soc_component_get_drvdata(component); 55 enum max9867_adc_dac adc_dac; 56 57 if (!strcmp(w->name, "ADCL")) 58 adc_dac = MAX9867_ADC_LEFT; 59 else if (!strcmp(w->name, "ADCR")) 60 adc_dac = MAX9867_ADC_RIGHT; 61 else if (!strcmp(w->name, "DACL")) 62 adc_dac = MAX9867_DAC_LEFT; 63 else if (!strcmp(w->name, "DACR")) 64 adc_dac = MAX9867_DAC_RIGHT; 65 else 66 return 0; 67 68 if (SND_SOC_DAPM_EVENT_ON(event)) 69 max9867->adc_dac_active |= BIT(adc_dac); 70 else if (SND_SOC_DAPM_EVENT_OFF(event)) 71 max9867->adc_dac_active &= ~BIT(adc_dac); 72 73 return 0; 74 } 75 76 static int max9867_filter_get(struct snd_kcontrol *kcontrol, 77 struct snd_ctl_elem_value *ucontrol) 78 { 79 struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol); 80 struct max9867_priv *max9867 = snd_soc_component_get_drvdata(component); 81 unsigned int reg; 82 int ret; 83 84 ret = regmap_read(max9867->regmap, MAX9867_CODECFLTR, ®); 85 if (ret) 86 return -EINVAL; 87 88 if (reg & MAX9867_CODECFLTR_MODE) 89 ucontrol->value.enumerated.item[0] = 1; 90 else 91 ucontrol->value.enumerated.item[0] = 0; 92 93 return 0; 94 } 95 96 static int max9867_filter_set(struct snd_kcontrol *kcontrol, 97 struct snd_ctl_elem_value *ucontrol) 98 { 99 struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol); 100 struct max9867_priv *max9867 = snd_soc_component_get_drvdata(component); 101 unsigned int reg, mode = ucontrol->value.enumerated.item[0]; 102 int ret; 103 104 if (mode > 1) 105 return -EINVAL; 106 107 /* don't allow change if ADC/DAC active */ 108 if (max9867->adc_dac_active) 109 return -EBUSY; 110 111 /* read current filter mode */ 112 ret = regmap_read(max9867->regmap, MAX9867_CODECFLTR, ®); 113 if (ret) 114 return -EINVAL; 115 116 if (mode) 117 mode = MAX9867_CODECFLTR_MODE; 118 119 /* check if change is needed */ 120 if ((reg & MAX9867_CODECFLTR_MODE) == mode) 121 return 0; 122 123 /* shutdown codec before switching filter mode */ 124 regmap_update_bits(max9867->regmap, MAX9867_PWRMAN, 125 MAX9867_PWRMAN_SHDN, 0); 126 127 /* switch filter mode */ 128 regmap_update_bits(max9867->regmap, MAX9867_CODECFLTR, 129 MAX9867_CODECFLTR_MODE, mode); 130 131 /* out of shutdown now */ 132 regmap_update_bits(max9867->regmap, MAX9867_PWRMAN, 133 MAX9867_PWRMAN_SHDN, MAX9867_PWRMAN_SHDN); 134 135 return 0; 136 } 137 138 static SOC_ENUM_SINGLE_EXT_DECL(max9867_filter, max9867_filter_text); 139 static SOC_ENUM_SINGLE_DECL(max9867_dac_filter, MAX9867_CODECFLTR, 0, 140 max9867_adc_dac_filter_text); 141 static SOC_ENUM_SINGLE_DECL(max9867_adc_filter, MAX9867_CODECFLTR, 4, 142 max9867_adc_dac_filter_text); 143 static SOC_ENUM_SINGLE_DECL(max9867_spkmode, MAX9867_MODECONFIG, 0, 144 max9867_spmode); 145 static const SNDRV_CTL_TLVD_DECLARE_DB_RANGE(max9867_master_tlv, 146 0, 2, TLV_DB_SCALE_ITEM(-8600, 200, 1), 147 3, 17, TLV_DB_SCALE_ITEM(-7800, 400, 0), 148 18, 25, TLV_DB_SCALE_ITEM(-2000, 200, 0), 149 26, 34, TLV_DB_SCALE_ITEM( -500, 100, 0), 150 35, 40, TLV_DB_SCALE_ITEM( 350, 50, 0), 151 ); 152 static DECLARE_TLV_DB_SCALE(max9867_mic_tlv, 0, 100, 0); 153 static DECLARE_TLV_DB_SCALE(max9867_line_tlv, -600, 200, 0); 154 static DECLARE_TLV_DB_SCALE(max9867_adc_tlv, -1200, 100, 0); 155 static DECLARE_TLV_DB_SCALE(max9867_dac_tlv, -1500, 100, 0); 156 static DECLARE_TLV_DB_SCALE(max9867_dacboost_tlv, 0, 600, 0); 157 static const SNDRV_CTL_TLVD_DECLARE_DB_RANGE(max9867_micboost_tlv, 158 0, 2, TLV_DB_SCALE_ITEM(-2000, 2000, 1), 159 3, 3, TLV_DB_SCALE_ITEM(3000, 0, 0), 160 ); 161 162 static const struct snd_kcontrol_new max9867_snd_controls[] = { 163 SOC_DOUBLE_R_TLV("Master Playback Volume", MAX9867_LEFTVOL, 164 MAX9867_RIGHTVOL, 0, 40, 1, max9867_master_tlv), 165 SOC_DOUBLE_R_TLV("Line Capture Volume", MAX9867_LEFTLINELVL, 166 MAX9867_RIGHTLINELVL, 0, 15, 1, max9867_line_tlv), 167 SOC_DOUBLE_R_TLV("Mic Capture Volume", MAX9867_LEFTMICGAIN, 168 MAX9867_RIGHTMICGAIN, 0, 20, 1, max9867_mic_tlv), 169 SOC_DOUBLE_R_TLV("Mic Boost Capture Volume", MAX9867_LEFTMICGAIN, 170 MAX9867_RIGHTMICGAIN, 5, 3, 0, max9867_micboost_tlv), 171 SOC_SINGLE("Digital Sidetone Volume", MAX9867_SIDETONE, 0, 31, 1), 172 SOC_SINGLE_TLV("Digital Playback Volume", MAX9867_DACLEVEL, 0, 15, 1, 173 max9867_dac_tlv), 174 SOC_SINGLE_TLV("Digital Boost Playback Volume", MAX9867_DACLEVEL, 4, 3, 0, 175 max9867_dacboost_tlv), 176 SOC_DOUBLE_TLV("Digital Capture Volume", MAX9867_ADCLEVEL, 4, 0, 15, 1, 177 max9867_adc_tlv), 178 SOC_ENUM("Speaker Mode", max9867_spkmode), 179 SOC_SINGLE("Volume Smoothing Switch", MAX9867_MODECONFIG, 6, 1, 0), 180 SOC_SINGLE("Line ZC Switch", MAX9867_MODECONFIG, 5, 1, 0), 181 SOC_ENUM_EXT("DSP Filter", max9867_filter, max9867_filter_get, max9867_filter_set), 182 SOC_ENUM("ADC Filter", max9867_adc_filter), 183 SOC_ENUM("DAC Filter", max9867_dac_filter), 184 SOC_SINGLE("Mono Playback Switch", MAX9867_IFC1B, 3, 1, 0), 185 }; 186 187 /* Input mixer */ 188 static const struct snd_kcontrol_new max9867_input_mixer_controls[] = { 189 SOC_DAPM_DOUBLE("Line Capture Switch", MAX9867_INPUTCONFIG, 7, 5, 1, 0), 190 SOC_DAPM_DOUBLE("Mic Capture Switch", MAX9867_INPUTCONFIG, 6, 4, 1, 0), 191 }; 192 193 /* Output mixer */ 194 static const struct snd_kcontrol_new max9867_output_mixer_controls[] = { 195 SOC_DAPM_DOUBLE_R("Line Bypass Switch", 196 MAX9867_LEFTLINELVL, MAX9867_RIGHTLINELVL, 6, 1, 1), 197 }; 198 199 /* Sidetone mixer */ 200 static const struct snd_kcontrol_new max9867_sidetone_mixer_controls[] = { 201 SOC_DAPM_DOUBLE("Sidetone Switch", MAX9867_SIDETONE, 6, 7, 1, 0), 202 }; 203 204 /* Line out switch */ 205 static const struct snd_kcontrol_new max9867_line_out_control = 206 SOC_DAPM_DOUBLE_R("Switch", 207 MAX9867_LEFTVOL, MAX9867_RIGHTVOL, 6, 1, 1); 208 209 /* DMIC mux */ 210 static const char *const dmic_mux_text[] = { 211 "ADC", "DMIC" 212 }; 213 static SOC_ENUM_SINGLE_DECL(left_dmic_mux_enum, 214 MAX9867_MICCONFIG, 5, dmic_mux_text); 215 static SOC_ENUM_SINGLE_DECL(right_dmic_mux_enum, 216 MAX9867_MICCONFIG, 4, dmic_mux_text); 217 static const struct snd_kcontrol_new max9867_left_dmic_mux = 218 SOC_DAPM_ENUM("DMICL Mux", left_dmic_mux_enum); 219 static const struct snd_kcontrol_new max9867_right_dmic_mux = 220 SOC_DAPM_ENUM("DMICR Mux", right_dmic_mux_enum); 221 222 static const struct snd_soc_dapm_widget max9867_dapm_widgets[] = { 223 SND_SOC_DAPM_INPUT("MICL"), 224 SND_SOC_DAPM_INPUT("MICR"), 225 SND_SOC_DAPM_INPUT("DMICL"), 226 SND_SOC_DAPM_INPUT("DMICR"), 227 SND_SOC_DAPM_INPUT("LINL"), 228 SND_SOC_DAPM_INPUT("LINR"), 229 230 SND_SOC_DAPM_PGA("Left Line Input", SND_SOC_NOPM, 0, 0, NULL, 0), 231 SND_SOC_DAPM_PGA("Right Line Input", SND_SOC_NOPM, 0, 0, NULL, 0), 232 SND_SOC_DAPM_MIXER_NAMED_CTL("Input Mixer", SND_SOC_NOPM, 0, 0, 233 max9867_input_mixer_controls, 234 ARRAY_SIZE(max9867_input_mixer_controls)), 235 SND_SOC_DAPM_MUX("DMICL Mux", SND_SOC_NOPM, 0, 0, 236 &max9867_left_dmic_mux), 237 SND_SOC_DAPM_MUX("DMICR Mux", SND_SOC_NOPM, 0, 0, 238 &max9867_right_dmic_mux), 239 SND_SOC_DAPM_ADC_E("ADCL", "HiFi Capture", SND_SOC_NOPM, 0, 0, 240 max9867_adc_dac_event, 241 SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD), 242 SND_SOC_DAPM_ADC_E("ADCR", "HiFi Capture", SND_SOC_NOPM, 0, 0, 243 max9867_adc_dac_event, 244 SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD), 245 246 SND_SOC_DAPM_MIXER("Digital", SND_SOC_NOPM, 0, 0, 247 max9867_sidetone_mixer_controls, 248 ARRAY_SIZE(max9867_sidetone_mixer_controls)), 249 SND_SOC_DAPM_MIXER_NAMED_CTL("Output Mixer", SND_SOC_NOPM, 0, 0, 250 max9867_output_mixer_controls, 251 ARRAY_SIZE(max9867_output_mixer_controls)), 252 SND_SOC_DAPM_DAC_E("DACL", "HiFi Playback", SND_SOC_NOPM, 0, 0, 253 max9867_adc_dac_event, 254 SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD), 255 SND_SOC_DAPM_DAC_E("DACR", "HiFi Playback", SND_SOC_NOPM, 0, 0, 256 max9867_adc_dac_event, 257 SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD), 258 SND_SOC_DAPM_SWITCH("Master Playback", SND_SOC_NOPM, 0, 0, 259 &max9867_line_out_control), 260 SND_SOC_DAPM_OUTPUT("LOUT"), 261 SND_SOC_DAPM_OUTPUT("ROUT"), 262 }; 263 264 static const struct snd_soc_dapm_route max9867_audio_map[] = { 265 {"Left Line Input", NULL, "LINL"}, 266 {"Right Line Input", NULL, "LINR"}, 267 {"Input Mixer", "Mic Capture Switch", "MICL"}, 268 {"Input Mixer", "Mic Capture Switch", "MICR"}, 269 {"Input Mixer", "Line Capture Switch", "Left Line Input"}, 270 {"Input Mixer", "Line Capture Switch", "Right Line Input"}, 271 {"DMICL Mux", "DMIC", "DMICL"}, 272 {"DMICR Mux", "DMIC", "DMICR"}, 273 {"DMICL Mux", "ADC", "Input Mixer"}, 274 {"DMICR Mux", "ADC", "Input Mixer"}, 275 {"ADCL", NULL, "DMICL Mux"}, 276 {"ADCR", NULL, "DMICR Mux"}, 277 278 {"Digital", "Sidetone Switch", "ADCL"}, 279 {"Digital", "Sidetone Switch", "ADCR"}, 280 {"DACL", NULL, "Digital"}, 281 {"DACR", NULL, "Digital"}, 282 283 {"Output Mixer", "Line Bypass Switch", "Left Line Input"}, 284 {"Output Mixer", "Line Bypass Switch", "Right Line Input"}, 285 {"Output Mixer", NULL, "DACL"}, 286 {"Output Mixer", NULL, "DACR"}, 287 {"Master Playback", "Switch", "Output Mixer"}, 288 {"LOUT", NULL, "Master Playback"}, 289 {"ROUT", NULL, "Master Playback"}, 290 }; 291 292 static const unsigned int max9867_rates_44k1[] = { 293 11025, 22050, 44100, 294 }; 295 296 static const struct snd_pcm_hw_constraint_list max9867_constraints_44k1 = { 297 .list = max9867_rates_44k1, 298 .count = ARRAY_SIZE(max9867_rates_44k1), 299 }; 300 301 static const unsigned int max9867_rates_48k[] = { 302 8000, 16000, 32000, 48000, 303 }; 304 305 static const struct snd_pcm_hw_constraint_list max9867_constraints_48k = { 306 .list = max9867_rates_48k, 307 .count = ARRAY_SIZE(max9867_rates_48k), 308 }; 309 310 static int max9867_startup(struct snd_pcm_substream *substream, 311 struct snd_soc_dai *dai) 312 { 313 struct max9867_priv *max9867 = 314 snd_soc_component_get_drvdata(dai->component); 315 316 if (max9867->constraints) 317 snd_pcm_hw_constraint_list(substream->runtime, 0, 318 SNDRV_PCM_HW_PARAM_RATE, max9867->constraints); 319 320 return 0; 321 } 322 323 static int max9867_dai_hw_params(struct snd_pcm_substream *substream, 324 struct snd_pcm_hw_params *params, struct snd_soc_dai *dai) 325 { 326 int value, freq = 0; 327 unsigned long int rate, ratio; 328 struct snd_soc_component *component = dai->component; 329 struct max9867_priv *max9867 = snd_soc_component_get_drvdata(component); 330 unsigned int ni = DIV_ROUND_CLOSEST_ULL(96ULL * 0x10000 * params_rate(params), 331 max9867->pclk); 332 333 /* set up the ni value */ 334 regmap_update_bits(max9867->regmap, MAX9867_AUDIOCLKHIGH, 335 MAX9867_NI_HIGH_MASK, (0xFF00 & ni) >> 8); 336 regmap_update_bits(max9867->regmap, MAX9867_AUDIOCLKLOW, 337 MAX9867_NI_LOW_MASK, 0x00FF & ni); 338 if (max9867->provider) { 339 if (max9867->dsp_a) { 340 value = MAX9867_IFC1B_48X; 341 } else { 342 rate = params_rate(params) * 2 * params_width(params); 343 ratio = max9867->pclk / rate; 344 switch (params_width(params)) { 345 case 8: 346 case 16: 347 switch (ratio) { 348 case 2: 349 value = MAX9867_IFC1B_PCLK_2; 350 break; 351 case 4: 352 value = MAX9867_IFC1B_PCLK_4; 353 break; 354 case 8: 355 value = MAX9867_IFC1B_PCLK_8; 356 break; 357 case 16: 358 value = MAX9867_IFC1B_PCLK_16; 359 break; 360 default: 361 return -EINVAL; 362 } 363 break; 364 case 24: 365 value = MAX9867_IFC1B_48X; 366 break; 367 case 32: 368 value = MAX9867_IFC1B_64X; 369 break; 370 default: 371 return -EINVAL; 372 } 373 } 374 regmap_update_bits(max9867->regmap, MAX9867_IFC1B, 375 MAX9867_IFC1B_BCLK_MASK, value); 376 377 /* Exact integer mode available for 8kHz and 16kHz sample rates 378 * and certain PCLK (prescaled MCLK) values. 379 */ 380 if (params_rate(params) == 8000 || 381 params_rate(params) == 16000) { 382 switch (max9867->pclk) { 383 case 12000000: 384 freq = 0x08; 385 break; 386 case 13000000: 387 freq = 0x0A; 388 break; 389 case 16000000: 390 freq = 0x0C; 391 break; 392 case 19200000: 393 freq = 0x0E; 394 break; 395 } 396 } 397 if (freq && params_rate(params) == 16000) 398 freq++; 399 400 /* If exact integer mode not available, the freq value 401 * remains zero, i.e. normal mode is used. 402 */ 403 regmap_update_bits(max9867->regmap, MAX9867_SYSCLK, 404 MAX9867_FREQ_MASK, freq); 405 } else { 406 /* 407 * digital pll locks on to any externally supplied LRCLK signal 408 * and also enable rapid lock mode. 409 */ 410 regmap_update_bits(max9867->regmap, MAX9867_AUDIOCLKLOW, 411 MAX9867_RAPID_LOCK, MAX9867_RAPID_LOCK); 412 regmap_update_bits(max9867->regmap, MAX9867_AUDIOCLKHIGH, 413 MAX9867_PLL, MAX9867_PLL); 414 } 415 return 0; 416 } 417 418 static int max9867_mute(struct snd_soc_dai *dai, int mute, int direction) 419 { 420 struct snd_soc_component *component = dai->component; 421 struct max9867_priv *max9867 = snd_soc_component_get_drvdata(component); 422 423 return regmap_update_bits(max9867->regmap, MAX9867_DACLEVEL, 424 1 << 6, !!mute << 6); 425 } 426 427 static int max9867_set_dai_sysclk(struct snd_soc_dai *codec_dai, 428 int clk_id, unsigned int freq, int dir) 429 { 430 struct snd_soc_component *component = codec_dai->component; 431 struct max9867_priv *max9867 = snd_soc_component_get_drvdata(component); 432 int value = 0; 433 434 /* Set the prescaler based on the master clock frequency*/ 435 if (freq >= 10000000 && freq <= 20000000) { 436 value |= MAX9867_PSCLK_10_20; 437 max9867->pclk = freq; 438 } else if (freq >= 20000000 && freq <= 40000000) { 439 value |= MAX9867_PSCLK_20_40; 440 max9867->pclk = freq / 2; 441 } else if (freq >= 40000000 && freq <= 60000000) { 442 value |= MAX9867_PSCLK_40_60; 443 max9867->pclk = freq / 4; 444 } else { 445 dev_err(component->dev, 446 "Invalid clock frequency %uHz (required 10-60MHz)\n", 447 freq); 448 return -EINVAL; 449 } 450 if (freq % 48000 == 0) 451 max9867->constraints = &max9867_constraints_48k; 452 else if (freq % 44100 == 0) 453 max9867->constraints = &max9867_constraints_44k1; 454 else 455 dev_warn(component->dev, 456 "Unable to set exact rate with %uHz clock frequency\n", 457 freq); 458 max9867->sysclk = freq; 459 value = value << MAX9867_PSCLK_SHIFT; 460 regmap_update_bits(max9867->regmap, MAX9867_SYSCLK, 461 MAX9867_PSCLK_MASK, value); 462 return 0; 463 } 464 465 static int max9867_dai_set_fmt(struct snd_soc_dai *codec_dai, 466 unsigned int fmt) 467 { 468 struct snd_soc_component *component = codec_dai->component; 469 struct max9867_priv *max9867 = snd_soc_component_get_drvdata(component); 470 u8 iface1A, iface1B; 471 472 switch (fmt & SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK) { 473 case SND_SOC_DAIFMT_CBP_CFP: 474 max9867->provider = true; 475 iface1A = MAX9867_MASTER; 476 iface1B = MAX9867_IFC1B_48X; 477 break; 478 case SND_SOC_DAIFMT_CBC_CFC: 479 max9867->provider = false; 480 iface1A = iface1B = 0; 481 break; 482 default: 483 return -EINVAL; 484 } 485 486 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { 487 case SND_SOC_DAIFMT_I2S: 488 max9867->dsp_a = false; 489 iface1A |= MAX9867_I2S_DLY; 490 break; 491 case SND_SOC_DAIFMT_DSP_A: 492 max9867->dsp_a = true; 493 iface1A |= MAX9867_TDM_MODE | MAX9867_SDOUT_HIZ; 494 break; 495 default: 496 return -EINVAL; 497 } 498 499 /* Clock inversion bits, BCI and WCI */ 500 switch (fmt & SND_SOC_DAIFMT_INV_MASK) { 501 case SND_SOC_DAIFMT_NB_NF: 502 break; 503 case SND_SOC_DAIFMT_IB_IF: 504 iface1A |= MAX9867_WCI_MODE | MAX9867_BCI_MODE; 505 break; 506 case SND_SOC_DAIFMT_IB_NF: 507 iface1A |= MAX9867_BCI_MODE; 508 break; 509 case SND_SOC_DAIFMT_NB_IF: 510 iface1A |= MAX9867_WCI_MODE; 511 break; 512 default: 513 return -EINVAL; 514 } 515 516 regmap_write(max9867->regmap, MAX9867_IFC1A, iface1A); 517 regmap_update_bits(max9867->regmap, MAX9867_IFC1B, 518 MAX9867_IFC1B_BCLK_MASK, iface1B); 519 520 return 0; 521 } 522 523 static const struct snd_soc_dai_ops max9867_dai_ops = { 524 .set_sysclk = max9867_set_dai_sysclk, 525 .set_fmt = max9867_dai_set_fmt, 526 .mute_stream = max9867_mute, 527 .startup = max9867_startup, 528 .hw_params = max9867_dai_hw_params, 529 .no_capture_mute = 1, 530 }; 531 532 static struct snd_soc_dai_driver max9867_dai[] = { 533 { 534 .name = "max9867-aif1", 535 .playback = { 536 .stream_name = "HiFi Playback", 537 .channels_min = 2, 538 .channels_max = 2, 539 .rates = SNDRV_PCM_RATE_8000_48000, 540 .formats = SNDRV_PCM_FMTBIT_S16_LE, 541 }, 542 .capture = { 543 .stream_name = "HiFi Capture", 544 .channels_min = 2, 545 .channels_max = 2, 546 .rates = SNDRV_PCM_RATE_8000_48000, 547 .formats = SNDRV_PCM_FMTBIT_S16_LE, 548 }, 549 .ops = &max9867_dai_ops, 550 .symmetric_rate = 1, 551 } 552 }; 553 554 #ifdef CONFIG_PM 555 static int max9867_suspend(struct snd_soc_component *component) 556 { 557 snd_soc_component_force_bias_level(component, SND_SOC_BIAS_OFF); 558 559 return 0; 560 } 561 562 static int max9867_resume(struct snd_soc_component *component) 563 { 564 snd_soc_component_force_bias_level(component, SND_SOC_BIAS_STANDBY); 565 566 return 0; 567 } 568 #else 569 #define max9867_suspend NULL 570 #define max9867_resume NULL 571 #endif 572 573 static int max9867_set_bias_level(struct snd_soc_component *component, 574 enum snd_soc_bias_level level) 575 { 576 int err; 577 struct max9867_priv *max9867 = snd_soc_component_get_drvdata(component); 578 579 switch (level) { 580 case SND_SOC_BIAS_STANDBY: 581 if (snd_soc_component_get_bias_level(component) == SND_SOC_BIAS_OFF) { 582 err = regcache_sync(max9867->regmap); 583 if (err) 584 return err; 585 586 err = regmap_write(max9867->regmap, 587 MAX9867_PWRMAN, 0xff); 588 if (err) 589 return err; 590 } 591 break; 592 case SND_SOC_BIAS_OFF: 593 err = regmap_write(max9867->regmap, MAX9867_PWRMAN, 0); 594 if (err) 595 return err; 596 597 regcache_mark_dirty(max9867->regmap); 598 break; 599 default: 600 break; 601 } 602 603 return 0; 604 } 605 606 static const struct snd_soc_component_driver max9867_component = { 607 .controls = max9867_snd_controls, 608 .num_controls = ARRAY_SIZE(max9867_snd_controls), 609 .dapm_routes = max9867_audio_map, 610 .num_dapm_routes = ARRAY_SIZE(max9867_audio_map), 611 .dapm_widgets = max9867_dapm_widgets, 612 .num_dapm_widgets = ARRAY_SIZE(max9867_dapm_widgets), 613 .suspend = max9867_suspend, 614 .resume = max9867_resume, 615 .set_bias_level = max9867_set_bias_level, 616 .idle_bias_on = 1, 617 .use_pmdown_time = 1, 618 .endianness = 1, 619 }; 620 621 static bool max9867_volatile_register(struct device *dev, unsigned int reg) 622 { 623 switch (reg) { 624 case MAX9867_STATUS: 625 case MAX9867_JACKSTATUS: 626 case MAX9867_AUXHIGH: 627 case MAX9867_AUXLOW: 628 return true; 629 default: 630 return false; 631 } 632 } 633 634 static const struct regmap_config max9867_regmap = { 635 .reg_bits = 8, 636 .val_bits = 8, 637 .max_register = MAX9867_REVISION, 638 .volatile_reg = max9867_volatile_register, 639 .cache_type = REGCACHE_RBTREE, 640 }; 641 642 static int max9867_i2c_probe(struct i2c_client *i2c) 643 { 644 struct max9867_priv *max9867; 645 int ret, reg; 646 647 max9867 = devm_kzalloc(&i2c->dev, sizeof(*max9867), GFP_KERNEL); 648 if (!max9867) 649 return -ENOMEM; 650 651 i2c_set_clientdata(i2c, max9867); 652 max9867->regmap = devm_regmap_init_i2c(i2c, &max9867_regmap); 653 if (IS_ERR(max9867->regmap)) { 654 ret = PTR_ERR(max9867->regmap); 655 dev_err(&i2c->dev, "Failed to allocate regmap: %d\n", ret); 656 return ret; 657 } 658 ret = regmap_read(max9867->regmap, MAX9867_REVISION, ®); 659 if (ret < 0) { 660 dev_err(&i2c->dev, "Failed to read: %d\n", ret); 661 return ret; 662 } 663 dev_info(&i2c->dev, "device revision: %x\n", reg); 664 ret = devm_snd_soc_register_component(&i2c->dev, &max9867_component, 665 max9867_dai, ARRAY_SIZE(max9867_dai)); 666 if (ret < 0) 667 dev_err(&i2c->dev, "Failed to register component: %d\n", ret); 668 return ret; 669 } 670 671 static const struct i2c_device_id max9867_i2c_id[] = { 672 { "max9867", 0 }, 673 { } 674 }; 675 MODULE_DEVICE_TABLE(i2c, max9867_i2c_id); 676 677 #ifdef CONFIG_OF 678 static const struct of_device_id max9867_of_match[] = { 679 { .compatible = "maxim,max9867", }, 680 { } 681 }; 682 MODULE_DEVICE_TABLE(of, max9867_of_match); 683 #endif 684 685 static struct i2c_driver max9867_i2c_driver = { 686 .driver = { 687 .name = "max9867", 688 .of_match_table = of_match_ptr(max9867_of_match), 689 }, 690 .probe_new = max9867_i2c_probe, 691 .id_table = max9867_i2c_id, 692 }; 693 694 module_i2c_driver(max9867_i2c_driver); 695 696 MODULE_AUTHOR("Ladislav Michl <ladis@linux-mips.org>"); 697 MODULE_DESCRIPTION("ASoC MAX9867 driver"); 698 MODULE_LICENSE("GPL"); 699