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/slab.h> 17 #include <sound/initval.h> 18 #include <sound/pcm_params.h> 19 #include <sound/soc.h> 20 #include <sound/soc-dapm.h> 21 #include <sound/tlv.h> 22 23 #include "ak4458.h" 24 25 #define AK4458_NUM_SUPPLIES 2 26 static const char *ak4458_supply_names[AK4458_NUM_SUPPLIES] = { 27 "DVDD", 28 "AVDD", 29 }; 30 31 enum ak4458_type { 32 AK4458 = 0, 33 AK4497 = 1, 34 }; 35 36 struct ak4458_drvdata { 37 struct snd_soc_dai_driver *dai_drv; 38 const struct snd_soc_component_driver *comp_drv; 39 enum ak4458_type type; 40 }; 41 42 /* AK4458 Codec Private Data */ 43 struct ak4458_priv { 44 struct regulator_bulk_data supplies[AK4458_NUM_SUPPLIES]; 45 const struct ak4458_drvdata *drvdata; 46 struct device *dev; 47 struct regmap *regmap; 48 struct gpio_desc *reset_gpiod; 49 struct gpio_desc *mute_gpiod; 50 int digfil; /* SSLOW, SD, SLOW bits */ 51 int fs; /* sampling rate */ 52 int fmt; 53 int slots; 54 int slot_width; 55 u32 dsd_path; /* For ak4497 */ 56 }; 57 58 static const struct reg_default ak4458_reg_defaults[] = { 59 { 0x00, 0x0C }, /* 0x00 AK4458_00_CONTROL1 */ 60 { 0x01, 0x22 }, /* 0x01 AK4458_01_CONTROL2 */ 61 { 0x02, 0x00 }, /* 0x02 AK4458_02_CONTROL3 */ 62 { 0x03, 0xFF }, /* 0x03 AK4458_03_LCHATT */ 63 { 0x04, 0xFF }, /* 0x04 AK4458_04_RCHATT */ 64 { 0x05, 0x00 }, /* 0x05 AK4458_05_CONTROL4 */ 65 { 0x06, 0x00 }, /* 0x06 AK4458_06_DSD1 */ 66 { 0x07, 0x03 }, /* 0x07 AK4458_07_CONTROL5 */ 67 { 0x08, 0x00 }, /* 0x08 AK4458_08_SOUND_CONTROL */ 68 { 0x09, 0x00 }, /* 0x09 AK4458_09_DSD2 */ 69 { 0x0A, 0x0D }, /* 0x0A AK4458_0A_CONTROL6 */ 70 { 0x0B, 0x0C }, /* 0x0B AK4458_0B_CONTROL7 */ 71 { 0x0C, 0x00 }, /* 0x0C AK4458_0C_CONTROL8 */ 72 { 0x0D, 0x00 }, /* 0x0D AK4458_0D_CONTROL9 */ 73 { 0x0E, 0x50 }, /* 0x0E AK4458_0E_CONTROL10 */ 74 { 0x0F, 0xFF }, /* 0x0F AK4458_0F_L2CHATT */ 75 { 0x10, 0xFF }, /* 0x10 AK4458_10_R2CHATT */ 76 { 0x11, 0xFF }, /* 0x11 AK4458_11_L3CHATT */ 77 { 0x12, 0xFF }, /* 0x12 AK4458_12_R3CHATT */ 78 { 0x13, 0xFF }, /* 0x13 AK4458_13_L4CHATT */ 79 { 0x14, 0xFF }, /* 0x14 AK4458_14_R4CHATT */ 80 }; 81 82 /* 83 * Volume control: 84 * from -127 to 0 dB in 0.5 dB steps (mute instead of -127.5 dB) 85 */ 86 static DECLARE_TLV_DB_SCALE(dac_tlv, -12750, 50, 1); 87 88 /* 89 * DEM1 bit DEM0 bit Mode 90 * 0 0 44.1kHz 91 * 0 1 OFF (default) 92 * 1 0 48kHz 93 * 1 1 32kHz 94 */ 95 static const char * const ak4458_dem_select_texts[] = { 96 "44.1kHz", "OFF", "48kHz", "32kHz" 97 }; 98 99 /* 100 * SSLOW, SD, SLOW bits Digital Filter Setting 101 * 0, 0, 0 : Sharp Roll-Off Filter 102 * 0, 0, 1 : Slow Roll-Off Filter 103 * 0, 1, 0 : Short delay Sharp Roll-Off Filter 104 * 0, 1, 1 : Short delay Slow Roll-Off Filter 105 * 1, *, * : Super Slow Roll-Off Filter 106 */ 107 static const char * const ak4458_digfil_select_texts[] = { 108 "Sharp Roll-Off Filter", 109 "Slow Roll-Off Filter", 110 "Short delay Sharp Roll-Off Filter", 111 "Short delay Slow Roll-Off Filter", 112 "Super Slow Roll-Off Filter" 113 }; 114 115 /* 116 * DZFB: Inverting Enable of DZF 117 * 0: DZF goes H at Zero Detection 118 * 1: DZF goes L at Zero Detection 119 */ 120 static const char * const ak4458_dzfb_select_texts[] = {"H", "L"}; 121 122 /* 123 * SC1-0 bits: Sound Mode Setting 124 * 0 0 : Sound Mode 0 125 * 0 1 : Sound Mode 1 126 * 1 0 : Sound Mode 2 127 * 1 1 : Reserved 128 */ 129 static const char * const ak4458_sc_select_texts[] = { 130 "Sound Mode 0", "Sound Mode 1", "Sound Mode 2" 131 }; 132 133 /* FIR2-0 bits: FIR Filter Mode Setting */ 134 static const char * const ak4458_fir_select_texts[] = { 135 "Mode 0", "Mode 1", "Mode 2", "Mode 3", 136 "Mode 4", "Mode 5", "Mode 6", "Mode 7", 137 }; 138 139 /* ATS1-0 bits Attenuation Speed */ 140 static const char * const ak4458_ats_select_texts[] = { 141 "4080/fs", "2040/fs", "510/fs", "255/fs", 142 }; 143 144 /* DIF2 bit Audio Interface Format Setting(BICK fs) */ 145 static const char * const ak4458_dif_select_texts[] = {"32fs,48fs", "64fs",}; 146 147 static const struct soc_enum ak4458_dac1_dem_enum = 148 SOC_ENUM_SINGLE(AK4458_01_CONTROL2, 1, 149 ARRAY_SIZE(ak4458_dem_select_texts), 150 ak4458_dem_select_texts); 151 static const struct soc_enum ak4458_dac2_dem_enum = 152 SOC_ENUM_SINGLE(AK4458_0A_CONTROL6, 0, 153 ARRAY_SIZE(ak4458_dem_select_texts), 154 ak4458_dem_select_texts); 155 static const struct soc_enum ak4458_dac3_dem_enum = 156 SOC_ENUM_SINGLE(AK4458_0E_CONTROL10, 4, 157 ARRAY_SIZE(ak4458_dem_select_texts), 158 ak4458_dem_select_texts); 159 static const struct soc_enum ak4458_dac4_dem_enum = 160 SOC_ENUM_SINGLE(AK4458_0E_CONTROL10, 6, 161 ARRAY_SIZE(ak4458_dem_select_texts), 162 ak4458_dem_select_texts); 163 static const struct soc_enum ak4458_digfil_enum = 164 SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(ak4458_digfil_select_texts), 165 ak4458_digfil_select_texts); 166 static const struct soc_enum ak4458_dzfb_enum = 167 SOC_ENUM_SINGLE(AK4458_02_CONTROL3, 2, 168 ARRAY_SIZE(ak4458_dzfb_select_texts), 169 ak4458_dzfb_select_texts); 170 static const struct soc_enum ak4458_sm_enum = 171 SOC_ENUM_SINGLE(AK4458_08_SOUND_CONTROL, 0, 172 ARRAY_SIZE(ak4458_sc_select_texts), 173 ak4458_sc_select_texts); 174 static const struct soc_enum ak4458_fir_enum = 175 SOC_ENUM_SINGLE(AK4458_0C_CONTROL8, 0, 176 ARRAY_SIZE(ak4458_fir_select_texts), 177 ak4458_fir_select_texts); 178 static const struct soc_enum ak4458_ats_enum = 179 SOC_ENUM_SINGLE(AK4458_0B_CONTROL7, 6, 180 ARRAY_SIZE(ak4458_ats_select_texts), 181 ak4458_ats_select_texts); 182 static const struct soc_enum ak4458_dif_enum = 183 SOC_ENUM_SINGLE(AK4458_00_CONTROL1, 3, 184 ARRAY_SIZE(ak4458_dif_select_texts), 185 ak4458_dif_select_texts); 186 187 static int get_digfil(struct snd_kcontrol *kcontrol, 188 struct snd_ctl_elem_value *ucontrol) 189 { 190 struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol); 191 struct ak4458_priv *ak4458 = snd_soc_component_get_drvdata(component); 192 193 ucontrol->value.enumerated.item[0] = ak4458->digfil; 194 195 return 0; 196 } 197 198 static int set_digfil(struct snd_kcontrol *kcontrol, 199 struct snd_ctl_elem_value *ucontrol) 200 { 201 struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol); 202 struct ak4458_priv *ak4458 = snd_soc_component_get_drvdata(component); 203 int num; 204 205 num = ucontrol->value.enumerated.item[0]; 206 if (num > 4) 207 return -EINVAL; 208 209 ak4458->digfil = num; 210 211 /* write SD bit */ 212 snd_soc_component_update_bits(component, AK4458_01_CONTROL2, 213 AK4458_SD_MASK, 214 ((ak4458->digfil & 0x02) << 4)); 215 216 /* write SLOW bit */ 217 snd_soc_component_update_bits(component, AK4458_02_CONTROL3, 218 AK4458_SLOW_MASK, 219 (ak4458->digfil & 0x01)); 220 221 /* write SSLOW bit */ 222 snd_soc_component_update_bits(component, AK4458_05_CONTROL4, 223 AK4458_SSLOW_MASK, 224 ((ak4458->digfil & 0x04) >> 2)); 225 226 return 0; 227 } 228 229 static const struct snd_kcontrol_new ak4458_snd_controls[] = { 230 SOC_DOUBLE_R_TLV("DAC1 Playback Volume", AK4458_03_LCHATT, 231 AK4458_04_RCHATT, 0, 0xFF, 0, dac_tlv), 232 SOC_DOUBLE_R_TLV("DAC2 Playback Volume", AK4458_0F_L2CHATT, 233 AK4458_10_R2CHATT, 0, 0xFF, 0, dac_tlv), 234 SOC_DOUBLE_R_TLV("DAC3 Playback Volume", AK4458_11_L3CHATT, 235 AK4458_12_R3CHATT, 0, 0xFF, 0, dac_tlv), 236 SOC_DOUBLE_R_TLV("DAC4 Playback Volume", AK4458_13_L4CHATT, 237 AK4458_14_R4CHATT, 0, 0xFF, 0, dac_tlv), 238 SOC_ENUM("AK4458 De-emphasis Response DAC1", ak4458_dac1_dem_enum), 239 SOC_ENUM("AK4458 De-emphasis Response DAC2", ak4458_dac2_dem_enum), 240 SOC_ENUM("AK4458 De-emphasis Response DAC3", ak4458_dac3_dem_enum), 241 SOC_ENUM("AK4458 De-emphasis Response DAC4", ak4458_dac4_dem_enum), 242 SOC_ENUM_EXT("AK4458 Digital Filter Setting", ak4458_digfil_enum, 243 get_digfil, set_digfil), 244 SOC_ENUM("AK4458 Inverting Enable of DZFB", ak4458_dzfb_enum), 245 SOC_ENUM("AK4458 Sound Mode", ak4458_sm_enum), 246 SOC_ENUM("AK4458 FIR Filter Mode Setting", ak4458_fir_enum), 247 SOC_ENUM("AK4458 Attenuation transition Time Setting", 248 ak4458_ats_enum), 249 SOC_ENUM("AK4458 BICK fs Setting", ak4458_dif_enum), 250 }; 251 252 /* ak4458 dapm widgets */ 253 static const struct snd_soc_dapm_widget ak4458_dapm_widgets[] = { 254 SND_SOC_DAPM_DAC("AK4458 DAC1", NULL, AK4458_0A_CONTROL6, 2, 0),/*pw*/ 255 SND_SOC_DAPM_AIF_IN("AK4458 SDTI", "Playback", 0, SND_SOC_NOPM, 0, 0), 256 SND_SOC_DAPM_OUTPUT("AK4458 AOUTA"), 257 258 SND_SOC_DAPM_DAC("AK4458 DAC2", NULL, AK4458_0A_CONTROL6, 3, 0),/*pw*/ 259 SND_SOC_DAPM_OUTPUT("AK4458 AOUTB"), 260 261 SND_SOC_DAPM_DAC("AK4458 DAC3", NULL, AK4458_0B_CONTROL7, 2, 0),/*pw*/ 262 SND_SOC_DAPM_OUTPUT("AK4458 AOUTC"), 263 264 SND_SOC_DAPM_DAC("AK4458 DAC4", NULL, AK4458_0B_CONTROL7, 3, 0),/*pw*/ 265 SND_SOC_DAPM_OUTPUT("AK4458 AOUTD"), 266 }; 267 268 static const struct snd_soc_dapm_route ak4458_intercon[] = { 269 {"AK4458 DAC1", NULL, "AK4458 SDTI"}, 270 {"AK4458 AOUTA", NULL, "AK4458 DAC1"}, 271 272 {"AK4458 DAC2", NULL, "AK4458 SDTI"}, 273 {"AK4458 AOUTB", NULL, "AK4458 DAC2"}, 274 275 {"AK4458 DAC3", NULL, "AK4458 SDTI"}, 276 {"AK4458 AOUTC", NULL, "AK4458 DAC3"}, 277 278 {"AK4458 DAC4", NULL, "AK4458 SDTI"}, 279 {"AK4458 AOUTD", NULL, "AK4458 DAC4"}, 280 }; 281 282 /* ak4497 controls */ 283 static const struct snd_kcontrol_new ak4497_snd_controls[] = { 284 SOC_DOUBLE_R_TLV("DAC Playback Volume", AK4458_03_LCHATT, 285 AK4458_04_RCHATT, 0, 0xFF, 0, dac_tlv), 286 SOC_ENUM("AK4497 De-emphasis Response DAC", ak4458_dac1_dem_enum), 287 SOC_ENUM_EXT("AK4497 Digital Filter Setting", ak4458_digfil_enum, 288 get_digfil, set_digfil), 289 SOC_ENUM("AK4497 Inverting Enable of DZFB", ak4458_dzfb_enum), 290 SOC_ENUM("AK4497 Sound Mode", ak4458_sm_enum), 291 SOC_ENUM("AK4497 Attenuation transition Time Setting", 292 ak4458_ats_enum), 293 }; 294 295 /* ak4497 dapm widgets */ 296 static const struct snd_soc_dapm_widget ak4497_dapm_widgets[] = { 297 SND_SOC_DAPM_DAC("AK4497 DAC", NULL, AK4458_0A_CONTROL6, 2, 0), 298 SND_SOC_DAPM_AIF_IN("AK4497 SDTI", "Playback", 0, SND_SOC_NOPM, 0, 0), 299 SND_SOC_DAPM_OUTPUT("AK4497 AOUT"), 300 }; 301 302 /* ak4497 dapm routes */ 303 static const struct snd_soc_dapm_route ak4497_intercon[] = { 304 {"AK4497 DAC", NULL, "AK4497 SDTI"}, 305 {"AK4497 AOUT", NULL, "AK4497 DAC"}, 306 307 }; 308 309 static int ak4458_rstn_control(struct snd_soc_component *component, int bit) 310 { 311 int ret; 312 313 if (bit) 314 ret = snd_soc_component_update_bits(component, 315 AK4458_00_CONTROL1, 316 AK4458_RSTN_MASK, 317 0x1); 318 else 319 ret = snd_soc_component_update_bits(component, 320 AK4458_00_CONTROL1, 321 AK4458_RSTN_MASK, 322 0x0); 323 if (ret < 0) 324 return ret; 325 326 return 0; 327 } 328 329 static int ak4458_hw_params(struct snd_pcm_substream *substream, 330 struct snd_pcm_hw_params *params, 331 struct snd_soc_dai *dai) 332 { 333 struct snd_soc_component *component = dai->component; 334 struct ak4458_priv *ak4458 = snd_soc_component_get_drvdata(component); 335 int pcm_width = max(params_physical_width(params), ak4458->slot_width); 336 u8 format, dsdsel0, dsdsel1; 337 int nfs1, dsd_bclk; 338 339 nfs1 = params_rate(params); 340 ak4458->fs = nfs1; 341 342 /* calculate bit clock */ 343 switch (params_format(params)) { 344 case SNDRV_PCM_FORMAT_DSD_U8: 345 case SNDRV_PCM_FORMAT_DSD_U16_LE: 346 case SNDRV_PCM_FORMAT_DSD_U16_BE: 347 case SNDRV_PCM_FORMAT_DSD_U32_LE: 348 case SNDRV_PCM_FORMAT_DSD_U32_BE: 349 dsd_bclk = nfs1 * params_physical_width(params); 350 switch (dsd_bclk) { 351 case 2822400: 352 dsdsel0 = 0; 353 dsdsel1 = 0; 354 break; 355 case 5644800: 356 dsdsel0 = 1; 357 dsdsel1 = 0; 358 break; 359 case 11289600: 360 dsdsel0 = 0; 361 dsdsel1 = 1; 362 break; 363 case 22579200: 364 if (ak4458->drvdata->type == AK4497) { 365 dsdsel0 = 1; 366 dsdsel1 = 1; 367 } else { 368 dev_err(dai->dev, "DSD512 not supported.\n"); 369 return -EINVAL; 370 } 371 break; 372 default: 373 dev_err(dai->dev, "Unsupported dsd bclk.\n"); 374 return -EINVAL; 375 } 376 377 snd_soc_component_update_bits(component, AK4458_06_DSD1, 378 AK4458_DSDSEL_MASK, dsdsel0); 379 snd_soc_component_update_bits(component, AK4458_09_DSD2, 380 AK4458_DSDSEL_MASK, dsdsel1); 381 break; 382 } 383 384 /* Master Clock Frequency Auto Setting Mode Enable */ 385 snd_soc_component_update_bits(component, AK4458_00_CONTROL1, 0x80, 0x80); 386 387 switch (pcm_width) { 388 case 16: 389 if (ak4458->fmt == SND_SOC_DAIFMT_I2S) 390 format = AK4458_DIF_24BIT_I2S; 391 else 392 format = AK4458_DIF_16BIT_LSB; 393 break; 394 case 32: 395 switch (ak4458->fmt) { 396 case SND_SOC_DAIFMT_I2S: 397 format = AK4458_DIF_32BIT_I2S; 398 break; 399 case SND_SOC_DAIFMT_LEFT_J: 400 format = AK4458_DIF_32BIT_MSB; 401 break; 402 case SND_SOC_DAIFMT_RIGHT_J: 403 format = AK4458_DIF_32BIT_LSB; 404 break; 405 case SND_SOC_DAIFMT_DSP_B: 406 format = AK4458_DIF_32BIT_MSB; 407 break; 408 case SND_SOC_DAIFMT_PDM: 409 format = AK4458_DIF_32BIT_MSB; 410 break; 411 default: 412 return -EINVAL; 413 } 414 break; 415 default: 416 return -EINVAL; 417 } 418 419 snd_soc_component_update_bits(component, AK4458_00_CONTROL1, 420 AK4458_DIF_MASK, format); 421 422 ak4458_rstn_control(component, 0); 423 ak4458_rstn_control(component, 1); 424 425 return 0; 426 } 427 428 static int ak4458_set_dai_fmt(struct snd_soc_dai *dai, unsigned int fmt) 429 { 430 struct snd_soc_component *component = dai->component; 431 struct ak4458_priv *ak4458 = snd_soc_component_get_drvdata(component); 432 433 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { 434 case SND_SOC_DAIFMT_CBS_CFS: /* Slave Mode */ 435 break; 436 case SND_SOC_DAIFMT_CBM_CFM: /* Master Mode is not supported */ 437 case SND_SOC_DAIFMT_CBS_CFM: 438 case SND_SOC_DAIFMT_CBM_CFS: 439 default: 440 dev_err(component->dev, "Master mode unsupported\n"); 441 return -EINVAL; 442 } 443 444 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { 445 case SND_SOC_DAIFMT_I2S: 446 case SND_SOC_DAIFMT_LEFT_J: 447 case SND_SOC_DAIFMT_RIGHT_J: 448 case SND_SOC_DAIFMT_DSP_B: 449 case SND_SOC_DAIFMT_PDM: 450 ak4458->fmt = fmt & SND_SOC_DAIFMT_FORMAT_MASK; 451 break; 452 default: 453 dev_err(component->dev, "Audio format 0x%02X unsupported\n", 454 fmt & SND_SOC_DAIFMT_FORMAT_MASK); 455 return -EINVAL; 456 } 457 458 /* DSD mode */ 459 snd_soc_component_update_bits(component, AK4458_02_CONTROL3, 460 AK4458_DP_MASK, 461 ak4458->fmt == SND_SOC_DAIFMT_PDM ? 462 AK4458_DP_MASK : 0); 463 464 ak4458_rstn_control(component, 0); 465 ak4458_rstn_control(component, 1); 466 467 return 0; 468 } 469 470 static const int att_speed[] = { 4080, 2040, 510, 255 }; 471 472 static int ak4458_set_dai_mute(struct snd_soc_dai *dai, int mute, int direction) 473 { 474 struct snd_soc_component *component = dai->component; 475 struct ak4458_priv *ak4458 = snd_soc_component_get_drvdata(component); 476 int nfs, ndt, reg; 477 int ats; 478 479 nfs = ak4458->fs; 480 481 reg = snd_soc_component_read(component, AK4458_0B_CONTROL7); 482 ats = (reg & AK4458_ATS_MASK) >> AK4458_ATS_SHIFT; 483 484 ndt = att_speed[ats] / (nfs / 1000); 485 486 if (mute) { 487 snd_soc_component_update_bits(component, AK4458_01_CONTROL2, 0x01, 1); 488 mdelay(ndt); 489 if (ak4458->mute_gpiod) 490 gpiod_set_value_cansleep(ak4458->mute_gpiod, 1); 491 } else { 492 if (ak4458->mute_gpiod) 493 gpiod_set_value_cansleep(ak4458->mute_gpiod, 0); 494 snd_soc_component_update_bits(component, AK4458_01_CONTROL2, 0x01, 0); 495 mdelay(ndt); 496 } 497 498 return 0; 499 } 500 501 static int ak4458_set_tdm_slot(struct snd_soc_dai *dai, unsigned int tx_mask, 502 unsigned int rx_mask, int slots, int slot_width) 503 { 504 struct snd_soc_component *component = dai->component; 505 struct ak4458_priv *ak4458 = snd_soc_component_get_drvdata(component); 506 int mode; 507 508 ak4458->slots = slots; 509 ak4458->slot_width = slot_width; 510 511 switch (slots * slot_width) { 512 case 128: 513 mode = AK4458_MODE_TDM128; 514 break; 515 case 256: 516 mode = AK4458_MODE_TDM256; 517 break; 518 case 512: 519 mode = AK4458_MODE_TDM512; 520 break; 521 default: 522 mode = AK4458_MODE_NORMAL; 523 break; 524 } 525 526 snd_soc_component_update_bits(component, AK4458_0A_CONTROL6, 527 AK4458_MODE_MASK, 528 mode); 529 530 return 0; 531 } 532 533 #define AK4458_FORMATS (SNDRV_PCM_FMTBIT_S16_LE |\ 534 SNDRV_PCM_FMTBIT_S24_LE |\ 535 SNDRV_PCM_FMTBIT_S32_LE |\ 536 SNDRV_PCM_FMTBIT_DSD_U8 |\ 537 SNDRV_PCM_FMTBIT_DSD_U16_LE |\ 538 SNDRV_PCM_FMTBIT_DSD_U32_LE) 539 540 static const unsigned int ak4458_rates[] = { 541 8000, 11025, 16000, 22050, 542 32000, 44100, 48000, 88200, 543 96000, 176400, 192000, 352800, 544 384000, 705600, 768000, 1411200, 545 2822400, 546 }; 547 548 static const struct snd_pcm_hw_constraint_list ak4458_rate_constraints = { 549 .count = ARRAY_SIZE(ak4458_rates), 550 .list = ak4458_rates, 551 }; 552 553 static int ak4458_startup(struct snd_pcm_substream *substream, 554 struct snd_soc_dai *dai) 555 { 556 int ret; 557 558 ret = snd_pcm_hw_constraint_list(substream->runtime, 0, 559 SNDRV_PCM_HW_PARAM_RATE, 560 &ak4458_rate_constraints); 561 562 return ret; 563 } 564 565 static const struct snd_soc_dai_ops ak4458_dai_ops = { 566 .startup = ak4458_startup, 567 .hw_params = ak4458_hw_params, 568 .set_fmt = ak4458_set_dai_fmt, 569 .mute_stream = ak4458_set_dai_mute, 570 .set_tdm_slot = ak4458_set_tdm_slot, 571 .no_capture_mute = 1, 572 }; 573 574 static struct snd_soc_dai_driver ak4458_dai = { 575 .name = "ak4458-aif", 576 .playback = { 577 .stream_name = "Playback", 578 .channels_min = 1, 579 .channels_max = 8, 580 .rates = SNDRV_PCM_RATE_KNOT, 581 .formats = AK4458_FORMATS, 582 }, 583 .ops = &ak4458_dai_ops, 584 }; 585 586 static struct snd_soc_dai_driver ak4497_dai = { 587 .name = "ak4497-aif", 588 .playback = { 589 .stream_name = "Playback", 590 .channels_min = 1, 591 .channels_max = 2, 592 .rates = SNDRV_PCM_RATE_KNOT, 593 .formats = AK4458_FORMATS, 594 }, 595 .ops = &ak4458_dai_ops, 596 }; 597 598 static void ak4458_reset(struct ak4458_priv *ak4458, bool active) 599 { 600 if (ak4458->reset_gpiod) { 601 gpiod_set_value_cansleep(ak4458->reset_gpiod, active); 602 usleep_range(1000, 2000); 603 } 604 } 605 606 static int ak4458_init(struct snd_soc_component *component) 607 { 608 struct ak4458_priv *ak4458 = snd_soc_component_get_drvdata(component); 609 int ret; 610 611 /* External Mute ON */ 612 if (ak4458->mute_gpiod) 613 gpiod_set_value_cansleep(ak4458->mute_gpiod, 1); 614 615 ak4458_reset(ak4458, false); 616 617 ret = snd_soc_component_update_bits(component, AK4458_00_CONTROL1, 618 0x80, 0x80); /* ACKS bit = 1; 10000000 */ 619 if (ret < 0) 620 return ret; 621 622 if (ak4458->drvdata->type == AK4497) { 623 ret = snd_soc_component_update_bits(component, AK4458_09_DSD2, 624 0x4, (ak4458->dsd_path << 2)); 625 if (ret < 0) 626 return ret; 627 } 628 629 return ak4458_rstn_control(component, 1); 630 } 631 632 static int ak4458_probe(struct snd_soc_component *component) 633 { 634 struct ak4458_priv *ak4458 = snd_soc_component_get_drvdata(component); 635 636 ak4458->fs = 48000; 637 638 return ak4458_init(component); 639 } 640 641 static void ak4458_remove(struct snd_soc_component *component) 642 { 643 struct ak4458_priv *ak4458 = snd_soc_component_get_drvdata(component); 644 645 ak4458_reset(ak4458, true); 646 } 647 648 #ifdef CONFIG_PM 649 static int __maybe_unused ak4458_runtime_suspend(struct device *dev) 650 { 651 struct ak4458_priv *ak4458 = dev_get_drvdata(dev); 652 653 regcache_cache_only(ak4458->regmap, true); 654 655 ak4458_reset(ak4458, true); 656 657 if (ak4458->mute_gpiod) 658 gpiod_set_value_cansleep(ak4458->mute_gpiod, 0); 659 660 regulator_bulk_disable(ARRAY_SIZE(ak4458->supplies), 661 ak4458->supplies); 662 return 0; 663 } 664 665 static int __maybe_unused ak4458_runtime_resume(struct device *dev) 666 { 667 struct ak4458_priv *ak4458 = dev_get_drvdata(dev); 668 int ret; 669 670 ret = regulator_bulk_enable(ARRAY_SIZE(ak4458->supplies), 671 ak4458->supplies); 672 if (ret != 0) { 673 dev_err(ak4458->dev, "Failed to enable supplies: %d\n", ret); 674 return ret; 675 } 676 677 if (ak4458->mute_gpiod) 678 gpiod_set_value_cansleep(ak4458->mute_gpiod, 1); 679 680 ak4458_reset(ak4458, true); 681 ak4458_reset(ak4458, false); 682 683 regcache_cache_only(ak4458->regmap, false); 684 regcache_mark_dirty(ak4458->regmap); 685 686 return regcache_sync(ak4458->regmap); 687 } 688 #endif /* CONFIG_PM */ 689 690 static const struct snd_soc_component_driver soc_codec_dev_ak4458 = { 691 .probe = ak4458_probe, 692 .remove = ak4458_remove, 693 .controls = ak4458_snd_controls, 694 .num_controls = ARRAY_SIZE(ak4458_snd_controls), 695 .dapm_widgets = ak4458_dapm_widgets, 696 .num_dapm_widgets = ARRAY_SIZE(ak4458_dapm_widgets), 697 .dapm_routes = ak4458_intercon, 698 .num_dapm_routes = ARRAY_SIZE(ak4458_intercon), 699 .idle_bias_on = 1, 700 .use_pmdown_time = 1, 701 .endianness = 1, 702 .non_legacy_dai_naming = 1, 703 }; 704 705 static const struct snd_soc_component_driver soc_codec_dev_ak4497 = { 706 .probe = ak4458_probe, 707 .remove = ak4458_remove, 708 .controls = ak4497_snd_controls, 709 .num_controls = ARRAY_SIZE(ak4497_snd_controls), 710 .dapm_widgets = ak4497_dapm_widgets, 711 .num_dapm_widgets = ARRAY_SIZE(ak4497_dapm_widgets), 712 .dapm_routes = ak4497_intercon, 713 .num_dapm_routes = ARRAY_SIZE(ak4497_intercon), 714 .idle_bias_on = 1, 715 .use_pmdown_time = 1, 716 .endianness = 1, 717 .non_legacy_dai_naming = 1, 718 }; 719 720 static const struct regmap_config ak4458_regmap = { 721 .reg_bits = 8, 722 .val_bits = 8, 723 724 .max_register = AK4458_14_R4CHATT, 725 .reg_defaults = ak4458_reg_defaults, 726 .num_reg_defaults = ARRAY_SIZE(ak4458_reg_defaults), 727 .cache_type = REGCACHE_RBTREE, 728 }; 729 730 static const struct ak4458_drvdata ak4458_drvdata = { 731 .dai_drv = &ak4458_dai, 732 .comp_drv = &soc_codec_dev_ak4458, 733 .type = AK4458, 734 }; 735 736 static const struct ak4458_drvdata ak4497_drvdata = { 737 .dai_drv = &ak4497_dai, 738 .comp_drv = &soc_codec_dev_ak4497, 739 .type = AK4497, 740 }; 741 742 static const struct dev_pm_ops ak4458_pm = { 743 SET_RUNTIME_PM_OPS(ak4458_runtime_suspend, ak4458_runtime_resume, NULL) 744 SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend, 745 pm_runtime_force_resume) 746 }; 747 748 static int ak4458_i2c_probe(struct i2c_client *i2c) 749 { 750 struct ak4458_priv *ak4458; 751 int ret, i; 752 753 ak4458 = devm_kzalloc(&i2c->dev, sizeof(*ak4458), GFP_KERNEL); 754 if (!ak4458) 755 return -ENOMEM; 756 757 ak4458->regmap = devm_regmap_init_i2c(i2c, &ak4458_regmap); 758 if (IS_ERR(ak4458->regmap)) 759 return PTR_ERR(ak4458->regmap); 760 761 i2c_set_clientdata(i2c, ak4458); 762 ak4458->dev = &i2c->dev; 763 764 ak4458->drvdata = of_device_get_match_data(&i2c->dev); 765 766 ak4458->reset_gpiod = devm_gpiod_get_optional(ak4458->dev, "reset", 767 GPIOD_OUT_LOW); 768 if (IS_ERR(ak4458->reset_gpiod)) 769 return PTR_ERR(ak4458->reset_gpiod); 770 771 ak4458->mute_gpiod = devm_gpiod_get_optional(ak4458->dev, "mute", 772 GPIOD_OUT_LOW); 773 if (IS_ERR(ak4458->mute_gpiod)) 774 return PTR_ERR(ak4458->mute_gpiod); 775 776 /* Optional property for ak4497 */ 777 of_property_read_u32(i2c->dev.of_node, "dsd-path", &ak4458->dsd_path); 778 779 for (i = 0; i < ARRAY_SIZE(ak4458->supplies); i++) 780 ak4458->supplies[i].supply = ak4458_supply_names[i]; 781 782 ret = devm_regulator_bulk_get(ak4458->dev, ARRAY_SIZE(ak4458->supplies), 783 ak4458->supplies); 784 if (ret != 0) { 785 dev_err(ak4458->dev, "Failed to request supplies: %d\n", ret); 786 return ret; 787 } 788 789 ret = devm_snd_soc_register_component(ak4458->dev, 790 ak4458->drvdata->comp_drv, 791 ak4458->drvdata->dai_drv, 1); 792 if (ret < 0) { 793 dev_err(ak4458->dev, "Failed to register CODEC: %d\n", ret); 794 return ret; 795 } 796 797 pm_runtime_enable(&i2c->dev); 798 regcache_cache_only(ak4458->regmap, true); 799 800 return 0; 801 } 802 803 static int ak4458_i2c_remove(struct i2c_client *i2c) 804 { 805 pm_runtime_disable(&i2c->dev); 806 807 return 0; 808 } 809 810 static const struct of_device_id ak4458_of_match[] = { 811 { .compatible = "asahi-kasei,ak4458", .data = &ak4458_drvdata}, 812 { .compatible = "asahi-kasei,ak4497", .data = &ak4497_drvdata}, 813 { }, 814 }; 815 816 static struct i2c_driver ak4458_i2c_driver = { 817 .driver = { 818 .name = "ak4458", 819 .pm = &ak4458_pm, 820 .of_match_table = ak4458_of_match, 821 }, 822 .probe_new = ak4458_i2c_probe, 823 .remove = ak4458_i2c_remove, 824 }; 825 826 module_i2c_driver(ak4458_i2c_driver); 827 828 MODULE_AUTHOR("Junichi Wakasugi <wakasugi.jb@om.asahi-kasei.co.jp>"); 829 MODULE_AUTHOR("Mihai Serban <mihai.serban@nxp.com>"); 830 MODULE_DESCRIPTION("ASoC AK4458 DAC driver"); 831 MODULE_LICENSE("GPL v2"); 832