1 // SPDX-License-Identifier: GPL-2.0 2 // 3 // Audio driver for AK4458 DAC 4 // 5 // Copyright (C) 2016 Asahi Kasei Microdevices Corporation 6 // Copyright 2018 NXP 7 8 #include <linux/delay.h> 9 #include <linux/gpio/consumer.h> 10 #include <linux/i2c.h> 11 #include <linux/module.h> 12 #include <linux/of_device.h> 13 #include <linux/of_gpio.h> 14 #include <linux/pm_runtime.h> 15 #include <linux/regulator/consumer.h> 16 #include <linux/reset.h> 17 #include <linux/slab.h> 18 #include <sound/initval.h> 19 #include <sound/pcm_params.h> 20 #include <sound/soc.h> 21 #include <sound/soc-dapm.h> 22 #include <sound/tlv.h> 23 24 #include "ak4458.h" 25 26 #define AK4458_NUM_SUPPLIES 2 27 static const char *ak4458_supply_names[AK4458_NUM_SUPPLIES] = { 28 "DVDD", 29 "AVDD", 30 }; 31 32 enum ak4458_type { 33 AK4458 = 0, 34 AK4497 = 1, 35 }; 36 37 struct ak4458_drvdata { 38 struct snd_soc_dai_driver *dai_drv; 39 const struct snd_soc_component_driver *comp_drv; 40 enum ak4458_type type; 41 }; 42 43 /* AK4458 Codec Private Data */ 44 struct ak4458_priv { 45 struct regulator_bulk_data supplies[AK4458_NUM_SUPPLIES]; 46 const struct ak4458_drvdata *drvdata; 47 struct device *dev; 48 struct regmap *regmap; 49 struct gpio_desc *reset_gpiod; 50 struct reset_control *reset; 51 struct gpio_desc *mute_gpiod; 52 int digfil; /* SSLOW, SD, SLOW bits */ 53 int fs; /* sampling rate */ 54 int fmt; 55 int slots; 56 int slot_width; 57 u32 dsd_path; /* For ak4497 */ 58 }; 59 60 static const struct reg_default ak4458_reg_defaults[] = { 61 { 0x00, 0x0C }, /* 0x00 AK4458_00_CONTROL1 */ 62 { 0x01, 0x22 }, /* 0x01 AK4458_01_CONTROL2 */ 63 { 0x02, 0x00 }, /* 0x02 AK4458_02_CONTROL3 */ 64 { 0x03, 0xFF }, /* 0x03 AK4458_03_LCHATT */ 65 { 0x04, 0xFF }, /* 0x04 AK4458_04_RCHATT */ 66 { 0x05, 0x00 }, /* 0x05 AK4458_05_CONTROL4 */ 67 { 0x06, 0x00 }, /* 0x06 AK4458_06_DSD1 */ 68 { 0x07, 0x03 }, /* 0x07 AK4458_07_CONTROL5 */ 69 { 0x08, 0x00 }, /* 0x08 AK4458_08_SOUND_CONTROL */ 70 { 0x09, 0x00 }, /* 0x09 AK4458_09_DSD2 */ 71 { 0x0A, 0x0D }, /* 0x0A AK4458_0A_CONTROL6 */ 72 { 0x0B, 0x0C }, /* 0x0B AK4458_0B_CONTROL7 */ 73 { 0x0C, 0x00 }, /* 0x0C AK4458_0C_CONTROL8 */ 74 { 0x0D, 0x00 }, /* 0x0D AK4458_0D_CONTROL9 */ 75 { 0x0E, 0x50 }, /* 0x0E AK4458_0E_CONTROL10 */ 76 { 0x0F, 0xFF }, /* 0x0F AK4458_0F_L2CHATT */ 77 { 0x10, 0xFF }, /* 0x10 AK4458_10_R2CHATT */ 78 { 0x11, 0xFF }, /* 0x11 AK4458_11_L3CHATT */ 79 { 0x12, 0xFF }, /* 0x12 AK4458_12_R3CHATT */ 80 { 0x13, 0xFF }, /* 0x13 AK4458_13_L4CHATT */ 81 { 0x14, 0xFF }, /* 0x14 AK4458_14_R4CHATT */ 82 }; 83 84 /* 85 * Volume control: 86 * from -127 to 0 dB in 0.5 dB steps (mute instead of -127.5 dB) 87 */ 88 static DECLARE_TLV_DB_SCALE(dac_tlv, -12750, 50, 1); 89 90 /* 91 * DEM1 bit DEM0 bit Mode 92 * 0 0 44.1kHz 93 * 0 1 OFF (default) 94 * 1 0 48kHz 95 * 1 1 32kHz 96 */ 97 static const char * const ak4458_dem_select_texts[] = { 98 "44.1kHz", "OFF", "48kHz", "32kHz" 99 }; 100 101 /* 102 * SSLOW, SD, SLOW bits Digital Filter Setting 103 * 0, 0, 0 : Sharp Roll-Off Filter 104 * 0, 0, 1 : Slow Roll-Off Filter 105 * 0, 1, 0 : Short delay Sharp Roll-Off Filter 106 * 0, 1, 1 : Short delay Slow Roll-Off Filter 107 * 1, *, * : Super Slow Roll-Off Filter 108 */ 109 static const char * const ak4458_digfil_select_texts[] = { 110 "Sharp Roll-Off Filter", 111 "Slow Roll-Off Filter", 112 "Short delay Sharp Roll-Off Filter", 113 "Short delay Slow Roll-Off Filter", 114 "Super Slow Roll-Off Filter" 115 }; 116 117 /* 118 * DZFB: Inverting Enable of DZF 119 * 0: DZF goes H at Zero Detection 120 * 1: DZF goes L at Zero Detection 121 */ 122 static const char * const ak4458_dzfb_select_texts[] = {"H", "L"}; 123 124 /* 125 * SC1-0 bits: Sound Mode Setting 126 * 0 0 : Sound Mode 0 127 * 0 1 : Sound Mode 1 128 * 1 0 : Sound Mode 2 129 * 1 1 : Reserved 130 */ 131 static const char * const ak4458_sc_select_texts[] = { 132 "Sound Mode 0", "Sound Mode 1", "Sound Mode 2" 133 }; 134 135 /* FIR2-0 bits: FIR Filter Mode Setting */ 136 static const char * const ak4458_fir_select_texts[] = { 137 "Mode 0", "Mode 1", "Mode 2", "Mode 3", 138 "Mode 4", "Mode 5", "Mode 6", "Mode 7", 139 }; 140 141 /* ATS1-0 bits Attenuation Speed */ 142 static const char * const ak4458_ats_select_texts[] = { 143 "4080/fs", "2040/fs", "510/fs", "255/fs", 144 }; 145 146 /* DIF2 bit Audio Interface Format Setting(BICK fs) */ 147 static const char * const ak4458_dif_select_texts[] = {"32fs,48fs", "64fs",}; 148 149 static const struct soc_enum ak4458_dac1_dem_enum = 150 SOC_ENUM_SINGLE(AK4458_01_CONTROL2, 1, 151 ARRAY_SIZE(ak4458_dem_select_texts), 152 ak4458_dem_select_texts); 153 static const struct soc_enum ak4458_dac2_dem_enum = 154 SOC_ENUM_SINGLE(AK4458_0A_CONTROL6, 0, 155 ARRAY_SIZE(ak4458_dem_select_texts), 156 ak4458_dem_select_texts); 157 static const struct soc_enum ak4458_dac3_dem_enum = 158 SOC_ENUM_SINGLE(AK4458_0E_CONTROL10, 4, 159 ARRAY_SIZE(ak4458_dem_select_texts), 160 ak4458_dem_select_texts); 161 static const struct soc_enum ak4458_dac4_dem_enum = 162 SOC_ENUM_SINGLE(AK4458_0E_CONTROL10, 6, 163 ARRAY_SIZE(ak4458_dem_select_texts), 164 ak4458_dem_select_texts); 165 static const struct soc_enum ak4458_digfil_enum = 166 SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(ak4458_digfil_select_texts), 167 ak4458_digfil_select_texts); 168 static const struct soc_enum ak4458_dzfb_enum = 169 SOC_ENUM_SINGLE(AK4458_02_CONTROL3, 2, 170 ARRAY_SIZE(ak4458_dzfb_select_texts), 171 ak4458_dzfb_select_texts); 172 static const struct soc_enum ak4458_sm_enum = 173 SOC_ENUM_SINGLE(AK4458_08_SOUND_CONTROL, 0, 174 ARRAY_SIZE(ak4458_sc_select_texts), 175 ak4458_sc_select_texts); 176 static const struct soc_enum ak4458_fir_enum = 177 SOC_ENUM_SINGLE(AK4458_0C_CONTROL8, 0, 178 ARRAY_SIZE(ak4458_fir_select_texts), 179 ak4458_fir_select_texts); 180 static const struct soc_enum ak4458_ats_enum = 181 SOC_ENUM_SINGLE(AK4458_0B_CONTROL7, 6, 182 ARRAY_SIZE(ak4458_ats_select_texts), 183 ak4458_ats_select_texts); 184 static const struct soc_enum ak4458_dif_enum = 185 SOC_ENUM_SINGLE(AK4458_00_CONTROL1, 3, 186 ARRAY_SIZE(ak4458_dif_select_texts), 187 ak4458_dif_select_texts); 188 189 static int get_digfil(struct snd_kcontrol *kcontrol, 190 struct snd_ctl_elem_value *ucontrol) 191 { 192 struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol); 193 struct ak4458_priv *ak4458 = snd_soc_component_get_drvdata(component); 194 195 ucontrol->value.enumerated.item[0] = ak4458->digfil; 196 197 return 0; 198 } 199 200 static int set_digfil(struct snd_kcontrol *kcontrol, 201 struct snd_ctl_elem_value *ucontrol) 202 { 203 struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol); 204 struct ak4458_priv *ak4458 = snd_soc_component_get_drvdata(component); 205 int num; 206 207 num = ucontrol->value.enumerated.item[0]; 208 if (num > 4) 209 return -EINVAL; 210 211 ak4458->digfil = num; 212 213 /* write SD bit */ 214 snd_soc_component_update_bits(component, AK4458_01_CONTROL2, 215 AK4458_SD_MASK, 216 ((ak4458->digfil & 0x02) << 4)); 217 218 /* write SLOW bit */ 219 snd_soc_component_update_bits(component, AK4458_02_CONTROL3, 220 AK4458_SLOW_MASK, 221 (ak4458->digfil & 0x01)); 222 223 /* write SSLOW bit */ 224 snd_soc_component_update_bits(component, AK4458_05_CONTROL4, 225 AK4458_SSLOW_MASK, 226 ((ak4458->digfil & 0x04) >> 2)); 227 228 return 0; 229 } 230 231 static const struct snd_kcontrol_new ak4458_snd_controls[] = { 232 SOC_DOUBLE_R_TLV("DAC1 Playback Volume", AK4458_03_LCHATT, 233 AK4458_04_RCHATT, 0, 0xFF, 0, dac_tlv), 234 SOC_DOUBLE_R_TLV("DAC2 Playback Volume", AK4458_0F_L2CHATT, 235 AK4458_10_R2CHATT, 0, 0xFF, 0, dac_tlv), 236 SOC_DOUBLE_R_TLV("DAC3 Playback Volume", AK4458_11_L3CHATT, 237 AK4458_12_R3CHATT, 0, 0xFF, 0, dac_tlv), 238 SOC_DOUBLE_R_TLV("DAC4 Playback Volume", AK4458_13_L4CHATT, 239 AK4458_14_R4CHATT, 0, 0xFF, 0, dac_tlv), 240 SOC_ENUM("AK4458 De-emphasis Response DAC1", ak4458_dac1_dem_enum), 241 SOC_ENUM("AK4458 De-emphasis Response DAC2", ak4458_dac2_dem_enum), 242 SOC_ENUM("AK4458 De-emphasis Response DAC3", ak4458_dac3_dem_enum), 243 SOC_ENUM("AK4458 De-emphasis Response DAC4", ak4458_dac4_dem_enum), 244 SOC_ENUM_EXT("AK4458 Digital Filter Setting", ak4458_digfil_enum, 245 get_digfil, set_digfil), 246 SOC_ENUM("AK4458 Inverting Enable of DZFB", ak4458_dzfb_enum), 247 SOC_ENUM("AK4458 Sound Mode", ak4458_sm_enum), 248 SOC_ENUM("AK4458 FIR Filter Mode Setting", ak4458_fir_enum), 249 SOC_ENUM("AK4458 Attenuation transition Time Setting", 250 ak4458_ats_enum), 251 SOC_ENUM("AK4458 BICK fs Setting", ak4458_dif_enum), 252 }; 253 254 /* ak4458 dapm widgets */ 255 static const struct snd_soc_dapm_widget ak4458_dapm_widgets[] = { 256 SND_SOC_DAPM_DAC("AK4458 DAC1", NULL, AK4458_0A_CONTROL6, 2, 0),/*pw*/ 257 SND_SOC_DAPM_AIF_IN("AK4458 SDTI", "Playback", 0, SND_SOC_NOPM, 0, 0), 258 SND_SOC_DAPM_OUTPUT("AK4458 AOUTA"), 259 260 SND_SOC_DAPM_DAC("AK4458 DAC2", NULL, AK4458_0A_CONTROL6, 3, 0),/*pw*/ 261 SND_SOC_DAPM_OUTPUT("AK4458 AOUTB"), 262 263 SND_SOC_DAPM_DAC("AK4458 DAC3", NULL, AK4458_0B_CONTROL7, 2, 0),/*pw*/ 264 SND_SOC_DAPM_OUTPUT("AK4458 AOUTC"), 265 266 SND_SOC_DAPM_DAC("AK4458 DAC4", NULL, AK4458_0B_CONTROL7, 3, 0),/*pw*/ 267 SND_SOC_DAPM_OUTPUT("AK4458 AOUTD"), 268 }; 269 270 static const struct snd_soc_dapm_route ak4458_intercon[] = { 271 {"AK4458 DAC1", NULL, "AK4458 SDTI"}, 272 {"AK4458 AOUTA", NULL, "AK4458 DAC1"}, 273 274 {"AK4458 DAC2", NULL, "AK4458 SDTI"}, 275 {"AK4458 AOUTB", NULL, "AK4458 DAC2"}, 276 277 {"AK4458 DAC3", NULL, "AK4458 SDTI"}, 278 {"AK4458 AOUTC", NULL, "AK4458 DAC3"}, 279 280 {"AK4458 DAC4", NULL, "AK4458 SDTI"}, 281 {"AK4458 AOUTD", NULL, "AK4458 DAC4"}, 282 }; 283 284 /* ak4497 controls */ 285 static const struct snd_kcontrol_new ak4497_snd_controls[] = { 286 SOC_DOUBLE_R_TLV("DAC Playback Volume", AK4458_03_LCHATT, 287 AK4458_04_RCHATT, 0, 0xFF, 0, dac_tlv), 288 SOC_ENUM("AK4497 De-emphasis Response DAC", ak4458_dac1_dem_enum), 289 SOC_ENUM_EXT("AK4497 Digital Filter Setting", ak4458_digfil_enum, 290 get_digfil, set_digfil), 291 SOC_ENUM("AK4497 Inverting Enable of DZFB", ak4458_dzfb_enum), 292 SOC_ENUM("AK4497 Sound Mode", ak4458_sm_enum), 293 SOC_ENUM("AK4497 Attenuation transition Time Setting", 294 ak4458_ats_enum), 295 }; 296 297 /* ak4497 dapm widgets */ 298 static const struct snd_soc_dapm_widget ak4497_dapm_widgets[] = { 299 SND_SOC_DAPM_DAC("AK4497 DAC", NULL, AK4458_0A_CONTROL6, 2, 0), 300 SND_SOC_DAPM_AIF_IN("AK4497 SDTI", "Playback", 0, SND_SOC_NOPM, 0, 0), 301 SND_SOC_DAPM_OUTPUT("AK4497 AOUT"), 302 }; 303 304 /* ak4497 dapm routes */ 305 static const struct snd_soc_dapm_route ak4497_intercon[] = { 306 {"AK4497 DAC", NULL, "AK4497 SDTI"}, 307 {"AK4497 AOUT", NULL, "AK4497 DAC"}, 308 309 }; 310 311 static int ak4458_get_tdm_mode(struct ak4458_priv *ak4458) 312 { 313 switch (ak4458->slots * ak4458->slot_width) { 314 case 128: 315 return 1; 316 case 256: 317 return 2; 318 case 512: 319 return 3; 320 default: 321 return 0; 322 } 323 } 324 325 static int ak4458_rstn_control(struct snd_soc_component *component, int bit) 326 { 327 int ret; 328 329 if (bit) 330 ret = snd_soc_component_update_bits(component, 331 AK4458_00_CONTROL1, 332 AK4458_RSTN_MASK, 333 0x1); 334 else 335 ret = snd_soc_component_update_bits(component, 336 AK4458_00_CONTROL1, 337 AK4458_RSTN_MASK, 338 0x0); 339 if (ret < 0) 340 return ret; 341 342 return 0; 343 } 344 345 static int ak4458_hw_params(struct snd_pcm_substream *substream, 346 struct snd_pcm_hw_params *params, 347 struct snd_soc_dai *dai) 348 { 349 struct snd_soc_component *component = dai->component; 350 struct ak4458_priv *ak4458 = snd_soc_component_get_drvdata(component); 351 int pcm_width = max(params_physical_width(params), ak4458->slot_width); 352 u8 format, dsdsel0, dsdsel1, dchn; 353 int nfs1, dsd_bclk, ret, channels, channels_max; 354 355 nfs1 = params_rate(params); 356 ak4458->fs = nfs1; 357 358 /* calculate bit clock */ 359 channels = params_channels(params); 360 channels_max = dai->driver->playback.channels_max; 361 362 switch (params_format(params)) { 363 case SNDRV_PCM_FORMAT_DSD_U8: 364 case SNDRV_PCM_FORMAT_DSD_U16_LE: 365 case SNDRV_PCM_FORMAT_DSD_U16_BE: 366 case SNDRV_PCM_FORMAT_DSD_U32_LE: 367 case SNDRV_PCM_FORMAT_DSD_U32_BE: 368 dsd_bclk = nfs1 * params_physical_width(params); 369 switch (dsd_bclk) { 370 case 2822400: 371 dsdsel0 = 0; 372 dsdsel1 = 0; 373 break; 374 case 5644800: 375 dsdsel0 = 1; 376 dsdsel1 = 0; 377 break; 378 case 11289600: 379 dsdsel0 = 0; 380 dsdsel1 = 1; 381 break; 382 case 22579200: 383 if (ak4458->drvdata->type == AK4497) { 384 dsdsel0 = 1; 385 dsdsel1 = 1; 386 } else { 387 dev_err(dai->dev, "DSD512 not supported.\n"); 388 return -EINVAL; 389 } 390 break; 391 default: 392 dev_err(dai->dev, "Unsupported dsd bclk.\n"); 393 return -EINVAL; 394 } 395 396 snd_soc_component_update_bits(component, AK4458_06_DSD1, 397 AK4458_DSDSEL_MASK, dsdsel0); 398 snd_soc_component_update_bits(component, AK4458_09_DSD2, 399 AK4458_DSDSEL_MASK, dsdsel1); 400 break; 401 } 402 403 /* Master Clock Frequency Auto Setting Mode Enable */ 404 snd_soc_component_update_bits(component, AK4458_00_CONTROL1, 0x80, 0x80); 405 406 switch (pcm_width) { 407 case 16: 408 if (ak4458->fmt == SND_SOC_DAIFMT_I2S) 409 format = AK4458_DIF_24BIT_I2S; 410 else 411 format = AK4458_DIF_16BIT_LSB; 412 break; 413 case 32: 414 switch (ak4458->fmt) { 415 case SND_SOC_DAIFMT_I2S: 416 format = AK4458_DIF_32BIT_I2S; 417 break; 418 case SND_SOC_DAIFMT_LEFT_J: 419 format = AK4458_DIF_32BIT_MSB; 420 break; 421 case SND_SOC_DAIFMT_RIGHT_J: 422 format = AK4458_DIF_32BIT_LSB; 423 break; 424 case SND_SOC_DAIFMT_DSP_B: 425 format = AK4458_DIF_32BIT_MSB; 426 break; 427 case SND_SOC_DAIFMT_PDM: 428 format = AK4458_DIF_32BIT_MSB; 429 break; 430 default: 431 return -EINVAL; 432 } 433 break; 434 default: 435 return -EINVAL; 436 } 437 438 snd_soc_component_update_bits(component, AK4458_00_CONTROL1, 439 AK4458_DIF_MASK, format); 440 441 /* 442 * Enable/disable Daisy Chain if in TDM mode and the number of played 443 * channels is bigger than the maximum supported number of channels 444 */ 445 dchn = ak4458_get_tdm_mode(ak4458) && 446 (ak4458->fmt == SND_SOC_DAIFMT_DSP_B) && 447 (channels > channels_max) ? AK4458_DCHAIN_MASK : 0; 448 449 snd_soc_component_update_bits(component, AK4458_0B_CONTROL7, 450 AK4458_DCHAIN_MASK, dchn); 451 452 if (ak4458->drvdata->type == AK4497) { 453 ret = snd_soc_component_update_bits(component, AK4458_09_DSD2, 454 0x4, (ak4458->dsd_path << 2)); 455 if (ret < 0) 456 return ret; 457 } 458 459 ret = ak4458_rstn_control(component, 0); 460 if (ret) 461 return ret; 462 463 ret = ak4458_rstn_control(component, 1); 464 if (ret) 465 return ret; 466 467 return 0; 468 } 469 470 static int ak4458_set_dai_fmt(struct snd_soc_dai *dai, unsigned int fmt) 471 { 472 struct snd_soc_component *component = dai->component; 473 struct ak4458_priv *ak4458 = snd_soc_component_get_drvdata(component); 474 int ret; 475 476 switch (fmt & SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK) { 477 case SND_SOC_DAIFMT_CBC_CFC: /* Consumer Mode */ 478 break; 479 case SND_SOC_DAIFMT_CBP_CFP: /* Provider Mode is not supported */ 480 case SND_SOC_DAIFMT_CBC_CFP: 481 case SND_SOC_DAIFMT_CBP_CFC: 482 default: 483 dev_err(component->dev, "Clock provider mode unsupported\n"); 484 return -EINVAL; 485 } 486 487 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { 488 case SND_SOC_DAIFMT_I2S: 489 case SND_SOC_DAIFMT_LEFT_J: 490 case SND_SOC_DAIFMT_RIGHT_J: 491 case SND_SOC_DAIFMT_DSP_B: 492 case SND_SOC_DAIFMT_PDM: 493 ak4458->fmt = fmt & SND_SOC_DAIFMT_FORMAT_MASK; 494 break; 495 default: 496 dev_err(component->dev, "Audio format 0x%02X unsupported\n", 497 fmt & SND_SOC_DAIFMT_FORMAT_MASK); 498 return -EINVAL; 499 } 500 501 /* DSD mode */ 502 snd_soc_component_update_bits(component, AK4458_02_CONTROL3, 503 AK4458_DP_MASK, 504 ak4458->fmt == SND_SOC_DAIFMT_PDM ? 505 AK4458_DP_MASK : 0); 506 507 ret = ak4458_rstn_control(component, 0); 508 if (ret) 509 return ret; 510 511 ret = ak4458_rstn_control(component, 1); 512 if (ret) 513 return ret; 514 515 return 0; 516 } 517 518 static const int att_speed[] = { 4080, 2040, 510, 255 }; 519 520 static int ak4458_set_dai_mute(struct snd_soc_dai *dai, int mute, int direction) 521 { 522 struct snd_soc_component *component = dai->component; 523 struct ak4458_priv *ak4458 = snd_soc_component_get_drvdata(component); 524 int nfs, ndt, reg; 525 int ats; 526 527 nfs = ak4458->fs; 528 529 reg = snd_soc_component_read(component, AK4458_0B_CONTROL7); 530 ats = (reg & AK4458_ATS_MASK) >> AK4458_ATS_SHIFT; 531 532 ndt = att_speed[ats] / (nfs / 1000); 533 534 if (mute) { 535 snd_soc_component_update_bits(component, AK4458_01_CONTROL2, 0x01, 1); 536 mdelay(ndt); 537 if (ak4458->mute_gpiod) 538 gpiod_set_value_cansleep(ak4458->mute_gpiod, 1); 539 } else { 540 if (ak4458->mute_gpiod) 541 gpiod_set_value_cansleep(ak4458->mute_gpiod, 0); 542 snd_soc_component_update_bits(component, AK4458_01_CONTROL2, 0x01, 0); 543 mdelay(ndt); 544 } 545 546 return 0; 547 } 548 549 static int ak4458_set_tdm_slot(struct snd_soc_dai *dai, unsigned int tx_mask, 550 unsigned int rx_mask, int slots, int slot_width) 551 { 552 struct snd_soc_component *component = dai->component; 553 struct ak4458_priv *ak4458 = snd_soc_component_get_drvdata(component); 554 int mode; 555 556 ak4458->slots = slots; 557 ak4458->slot_width = slot_width; 558 559 mode = ak4458_get_tdm_mode(ak4458) << AK4458_MODE_SHIFT; 560 561 snd_soc_component_update_bits(component, AK4458_0A_CONTROL6, 562 AK4458_MODE_MASK, 563 mode); 564 565 return 0; 566 } 567 568 #define AK4458_FORMATS (SNDRV_PCM_FMTBIT_S16_LE |\ 569 SNDRV_PCM_FMTBIT_S24_LE |\ 570 SNDRV_PCM_FMTBIT_S32_LE |\ 571 SNDRV_PCM_FMTBIT_DSD_U8 |\ 572 SNDRV_PCM_FMTBIT_DSD_U16_LE |\ 573 SNDRV_PCM_FMTBIT_DSD_U32_LE) 574 575 static const unsigned int ak4458_rates[] = { 576 8000, 11025, 16000, 22050, 577 32000, 44100, 48000, 88200, 578 96000, 176400, 192000, 352800, 579 384000, 705600, 768000, 1411200, 580 2822400, 581 }; 582 583 static const struct snd_pcm_hw_constraint_list ak4458_rate_constraints = { 584 .count = ARRAY_SIZE(ak4458_rates), 585 .list = ak4458_rates, 586 }; 587 588 static int ak4458_startup(struct snd_pcm_substream *substream, 589 struct snd_soc_dai *dai) 590 { 591 int ret; 592 593 ret = snd_pcm_hw_constraint_list(substream->runtime, 0, 594 SNDRV_PCM_HW_PARAM_RATE, 595 &ak4458_rate_constraints); 596 597 return ret; 598 } 599 600 static const struct snd_soc_dai_ops ak4458_dai_ops = { 601 .startup = ak4458_startup, 602 .hw_params = ak4458_hw_params, 603 .set_fmt = ak4458_set_dai_fmt, 604 .mute_stream = ak4458_set_dai_mute, 605 .set_tdm_slot = ak4458_set_tdm_slot, 606 .no_capture_mute = 1, 607 }; 608 609 static struct snd_soc_dai_driver ak4458_dai = { 610 .name = "ak4458-aif", 611 .playback = { 612 .stream_name = "Playback", 613 .channels_min = 1, 614 .channels_max = 8, 615 .rates = SNDRV_PCM_RATE_KNOT, 616 .formats = AK4458_FORMATS, 617 }, 618 .ops = &ak4458_dai_ops, 619 }; 620 621 static struct snd_soc_dai_driver ak4497_dai = { 622 .name = "ak4497-aif", 623 .playback = { 624 .stream_name = "Playback", 625 .channels_min = 1, 626 .channels_max = 2, 627 .rates = SNDRV_PCM_RATE_KNOT, 628 .formats = AK4458_FORMATS, 629 }, 630 .ops = &ak4458_dai_ops, 631 }; 632 633 static void ak4458_reset(struct ak4458_priv *ak4458, bool active) 634 { 635 if (ak4458->reset_gpiod) { 636 gpiod_set_value_cansleep(ak4458->reset_gpiod, active); 637 usleep_range(1000, 2000); 638 } else if (!IS_ERR_OR_NULL(ak4458->reset)) { 639 if (active) 640 reset_control_assert(ak4458->reset); 641 else 642 reset_control_deassert(ak4458->reset); 643 usleep_range(1000, 2000); 644 } 645 } 646 647 #ifdef CONFIG_PM 648 static int __maybe_unused ak4458_runtime_suspend(struct device *dev) 649 { 650 struct ak4458_priv *ak4458 = dev_get_drvdata(dev); 651 652 regcache_cache_only(ak4458->regmap, true); 653 654 ak4458_reset(ak4458, true); 655 656 if (ak4458->mute_gpiod) 657 gpiod_set_value_cansleep(ak4458->mute_gpiod, 0); 658 659 regulator_bulk_disable(ARRAY_SIZE(ak4458->supplies), 660 ak4458->supplies); 661 return 0; 662 } 663 664 static int __maybe_unused ak4458_runtime_resume(struct device *dev) 665 { 666 struct ak4458_priv *ak4458 = dev_get_drvdata(dev); 667 int ret; 668 669 ret = regulator_bulk_enable(ARRAY_SIZE(ak4458->supplies), 670 ak4458->supplies); 671 if (ret != 0) { 672 dev_err(ak4458->dev, "Failed to enable supplies: %d\n", ret); 673 return ret; 674 } 675 676 if (ak4458->mute_gpiod) 677 gpiod_set_value_cansleep(ak4458->mute_gpiod, 1); 678 679 ak4458_reset(ak4458, false); 680 681 regcache_cache_only(ak4458->regmap, false); 682 regcache_mark_dirty(ak4458->regmap); 683 684 return regcache_sync(ak4458->regmap); 685 } 686 #endif /* CONFIG_PM */ 687 688 static const struct snd_soc_component_driver soc_codec_dev_ak4458 = { 689 .controls = ak4458_snd_controls, 690 .num_controls = ARRAY_SIZE(ak4458_snd_controls), 691 .dapm_widgets = ak4458_dapm_widgets, 692 .num_dapm_widgets = ARRAY_SIZE(ak4458_dapm_widgets), 693 .dapm_routes = ak4458_intercon, 694 .num_dapm_routes = ARRAY_SIZE(ak4458_intercon), 695 .idle_bias_on = 1, 696 .use_pmdown_time = 1, 697 .endianness = 1, 698 }; 699 700 static const struct snd_soc_component_driver soc_codec_dev_ak4497 = { 701 .controls = ak4497_snd_controls, 702 .num_controls = ARRAY_SIZE(ak4497_snd_controls), 703 .dapm_widgets = ak4497_dapm_widgets, 704 .num_dapm_widgets = ARRAY_SIZE(ak4497_dapm_widgets), 705 .dapm_routes = ak4497_intercon, 706 .num_dapm_routes = ARRAY_SIZE(ak4497_intercon), 707 .idle_bias_on = 1, 708 .use_pmdown_time = 1, 709 .endianness = 1, 710 }; 711 712 static const struct regmap_config ak4458_regmap = { 713 .reg_bits = 8, 714 .val_bits = 8, 715 716 .max_register = AK4458_14_R4CHATT, 717 .reg_defaults = ak4458_reg_defaults, 718 .num_reg_defaults = ARRAY_SIZE(ak4458_reg_defaults), 719 .cache_type = REGCACHE_RBTREE, 720 }; 721 722 static const struct ak4458_drvdata ak4458_drvdata = { 723 .dai_drv = &ak4458_dai, 724 .comp_drv = &soc_codec_dev_ak4458, 725 .type = AK4458, 726 }; 727 728 static const struct ak4458_drvdata ak4497_drvdata = { 729 .dai_drv = &ak4497_dai, 730 .comp_drv = &soc_codec_dev_ak4497, 731 .type = AK4497, 732 }; 733 734 static const struct dev_pm_ops ak4458_pm = { 735 SET_RUNTIME_PM_OPS(ak4458_runtime_suspend, ak4458_runtime_resume, NULL) 736 SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend, 737 pm_runtime_force_resume) 738 }; 739 740 static int ak4458_i2c_probe(struct i2c_client *i2c) 741 { 742 struct ak4458_priv *ak4458; 743 int ret, i; 744 745 ak4458 = devm_kzalloc(&i2c->dev, sizeof(*ak4458), GFP_KERNEL); 746 if (!ak4458) 747 return -ENOMEM; 748 749 ak4458->regmap = devm_regmap_init_i2c(i2c, &ak4458_regmap); 750 if (IS_ERR(ak4458->regmap)) 751 return PTR_ERR(ak4458->regmap); 752 753 i2c_set_clientdata(i2c, ak4458); 754 ak4458->dev = &i2c->dev; 755 756 ak4458->drvdata = of_device_get_match_data(&i2c->dev); 757 758 ak4458->reset = devm_reset_control_get_optional_shared(ak4458->dev, NULL); 759 if (IS_ERR(ak4458->reset)) 760 return PTR_ERR(ak4458->reset); 761 762 ak4458->reset_gpiod = devm_gpiod_get_optional(ak4458->dev, "reset", 763 GPIOD_OUT_LOW); 764 if (IS_ERR(ak4458->reset_gpiod)) 765 return PTR_ERR(ak4458->reset_gpiod); 766 767 ak4458->mute_gpiod = devm_gpiod_get_optional(ak4458->dev, "mute", 768 GPIOD_OUT_LOW); 769 if (IS_ERR(ak4458->mute_gpiod)) 770 return PTR_ERR(ak4458->mute_gpiod); 771 772 /* Optional property for ak4497 */ 773 of_property_read_u32(i2c->dev.of_node, "dsd-path", &ak4458->dsd_path); 774 775 for (i = 0; i < ARRAY_SIZE(ak4458->supplies); i++) 776 ak4458->supplies[i].supply = ak4458_supply_names[i]; 777 778 ret = devm_regulator_bulk_get(ak4458->dev, ARRAY_SIZE(ak4458->supplies), 779 ak4458->supplies); 780 if (ret != 0) { 781 dev_err(ak4458->dev, "Failed to request supplies: %d\n", ret); 782 return ret; 783 } 784 785 ret = devm_snd_soc_register_component(ak4458->dev, 786 ak4458->drvdata->comp_drv, 787 ak4458->drvdata->dai_drv, 1); 788 if (ret < 0) { 789 dev_err(ak4458->dev, "Failed to register CODEC: %d\n", ret); 790 return ret; 791 } 792 793 pm_runtime_enable(&i2c->dev); 794 regcache_cache_only(ak4458->regmap, true); 795 ak4458_reset(ak4458, false); 796 797 return 0; 798 } 799 800 static void ak4458_i2c_remove(struct i2c_client *i2c) 801 { 802 struct ak4458_priv *ak4458 = i2c_get_clientdata(i2c); 803 804 ak4458_reset(ak4458, true); 805 pm_runtime_disable(&i2c->dev); 806 } 807 808 static const struct of_device_id ak4458_of_match[] = { 809 { .compatible = "asahi-kasei,ak4458", .data = &ak4458_drvdata}, 810 { .compatible = "asahi-kasei,ak4497", .data = &ak4497_drvdata}, 811 { }, 812 }; 813 MODULE_DEVICE_TABLE(of, ak4458_of_match); 814 815 static struct i2c_driver ak4458_i2c_driver = { 816 .driver = { 817 .name = "ak4458", 818 .pm = &ak4458_pm, 819 .of_match_table = ak4458_of_match, 820 }, 821 .probe = ak4458_i2c_probe, 822 .remove = ak4458_i2c_remove, 823 }; 824 825 module_i2c_driver(ak4458_i2c_driver); 826 827 MODULE_AUTHOR("Junichi Wakasugi <wakasugi.jb@om.asahi-kasei.co.jp>"); 828 MODULE_AUTHOR("Mihai Serban <mihai.serban@nxp.com>"); 829 MODULE_DESCRIPTION("ASoC AK4458 DAC driver"); 830 MODULE_LICENSE("GPL v2"); 831