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/slab.h> 16 #include <sound/initval.h> 17 #include <sound/pcm_params.h> 18 #include <sound/soc.h> 19 #include <sound/soc-dapm.h> 20 #include <sound/tlv.h> 21 22 #include "ak4458.h" 23 24 struct ak4458_drvdata { 25 struct snd_soc_dai_driver *dai_drv; 26 const struct snd_soc_component_driver *comp_drv; 27 }; 28 29 /* AK4458 Codec Private Data */ 30 struct ak4458_priv { 31 struct device *dev; 32 struct regmap *regmap; 33 struct gpio_desc *reset_gpiod; 34 struct gpio_desc *mute_gpiod; 35 int digfil; /* SSLOW, SD, SLOW bits */ 36 int fs; /* sampling rate */ 37 int fmt; 38 int slots; 39 int slot_width; 40 }; 41 42 static const struct reg_default ak4458_reg_defaults[] = { 43 { 0x00, 0x0C }, /* 0x00 AK4458_00_CONTROL1 */ 44 { 0x01, 0x22 }, /* 0x01 AK4458_01_CONTROL2 */ 45 { 0x02, 0x00 }, /* 0x02 AK4458_02_CONTROL3 */ 46 { 0x03, 0xFF }, /* 0x03 AK4458_03_LCHATT */ 47 { 0x04, 0xFF }, /* 0x04 AK4458_04_RCHATT */ 48 { 0x05, 0x00 }, /* 0x05 AK4458_05_CONTROL4 */ 49 { 0x06, 0x00 }, /* 0x06 AK4458_06_DSD1 */ 50 { 0x07, 0x03 }, /* 0x07 AK4458_07_CONTROL5 */ 51 { 0x08, 0x00 }, /* 0x08 AK4458_08_SOUND_CONTROL */ 52 { 0x09, 0x00 }, /* 0x09 AK4458_09_DSD2 */ 53 { 0x0A, 0x0D }, /* 0x0A AK4458_0A_CONTROL6 */ 54 { 0x0B, 0x0C }, /* 0x0B AK4458_0B_CONTROL7 */ 55 { 0x0C, 0x00 }, /* 0x0C AK4458_0C_CONTROL8 */ 56 { 0x0D, 0x00 }, /* 0x0D AK4458_0D_CONTROL9 */ 57 { 0x0E, 0x50 }, /* 0x0E AK4458_0E_CONTROL10 */ 58 { 0x0F, 0xFF }, /* 0x0F AK4458_0F_L2CHATT */ 59 { 0x10, 0xFF }, /* 0x10 AK4458_10_R2CHATT */ 60 { 0x11, 0xFF }, /* 0x11 AK4458_11_L3CHATT */ 61 { 0x12, 0xFF }, /* 0x12 AK4458_12_R3CHATT */ 62 { 0x13, 0xFF }, /* 0x13 AK4458_13_L4CHATT */ 63 { 0x14, 0xFF }, /* 0x14 AK4458_14_R4CHATT */ 64 }; 65 66 /* 67 * Volume control: 68 * from -127 to 0 dB in 0.5 dB steps (mute instead of -127.5 dB) 69 */ 70 static DECLARE_TLV_DB_SCALE(dac_tlv, -12750, 50, 1); 71 72 /* 73 * DEM1 bit DEM0 bit Mode 74 * 0 0 44.1kHz 75 * 0 1 OFF (default) 76 * 1 0 48kHz 77 * 1 1 32kHz 78 */ 79 static const char * const ak4458_dem_select_texts[] = { 80 "44.1kHz", "OFF", "48kHz", "32kHz" 81 }; 82 83 /* 84 * SSLOW, SD, SLOW bits Digital Filter Setting 85 * 0, 0, 0 : Sharp Roll-Off Filter 86 * 0, 0, 1 : Slow Roll-Off Filter 87 * 0, 1, 0 : Short delay Sharp Roll-Off Filter 88 * 0, 1, 1 : Short delay Slow Roll-Off Filter 89 * 1, *, * : Super Slow Roll-Off Filter 90 */ 91 static const char * const ak4458_digfil_select_texts[] = { 92 "Sharp Roll-Off Filter", 93 "Slow Roll-Off Filter", 94 "Short delay Sharp Roll-Off Filter", 95 "Short delay Slow Roll-Off Filter", 96 "Super Slow Roll-Off Filter" 97 }; 98 99 /* 100 * DZFB: Inverting Enable of DZF 101 * 0: DZF goes H at Zero Detection 102 * 1: DZF goes L at Zero Detection 103 */ 104 static const char * const ak4458_dzfb_select_texts[] = {"H", "L"}; 105 106 /* 107 * SC1-0 bits: Sound Mode Setting 108 * 0 0 : Sound Mode 0 109 * 0 1 : Sound Mode 1 110 * 1 0 : Sound Mode 2 111 * 1 1 : Reserved 112 */ 113 static const char * const ak4458_sc_select_texts[] = { 114 "Sound Mode 0", "Sound Mode 1", "Sound Mode 2" 115 }; 116 117 /* FIR2-0 bits: FIR Filter Mode Setting */ 118 static const char * const ak4458_fir_select_texts[] = { 119 "Mode 0", "Mode 1", "Mode 2", "Mode 3", 120 "Mode 4", "Mode 5", "Mode 6", "Mode 7", 121 }; 122 123 /* ATS1-0 bits Attenuation Speed */ 124 static const char * const ak4458_ats_select_texts[] = { 125 "4080/fs", "2040/fs", "510/fs", "255/fs", 126 }; 127 128 /* DIF2 bit Audio Interface Format Setting(BICK fs) */ 129 static const char * const ak4458_dif_select_texts[] = {"32fs,48fs", "64fs",}; 130 131 static const struct soc_enum ak4458_dac1_dem_enum = 132 SOC_ENUM_SINGLE(AK4458_01_CONTROL2, 1, 133 ARRAY_SIZE(ak4458_dem_select_texts), 134 ak4458_dem_select_texts); 135 static const struct soc_enum ak4458_dac2_dem_enum = 136 SOC_ENUM_SINGLE(AK4458_0A_CONTROL6, 0, 137 ARRAY_SIZE(ak4458_dem_select_texts), 138 ak4458_dem_select_texts); 139 static const struct soc_enum ak4458_dac3_dem_enum = 140 SOC_ENUM_SINGLE(AK4458_0E_CONTROL10, 4, 141 ARRAY_SIZE(ak4458_dem_select_texts), 142 ak4458_dem_select_texts); 143 static const struct soc_enum ak4458_dac4_dem_enum = 144 SOC_ENUM_SINGLE(AK4458_0E_CONTROL10, 6, 145 ARRAY_SIZE(ak4458_dem_select_texts), 146 ak4458_dem_select_texts); 147 static const struct soc_enum ak4458_digfil_enum = 148 SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(ak4458_digfil_select_texts), 149 ak4458_digfil_select_texts); 150 static const struct soc_enum ak4458_dzfb_enum = 151 SOC_ENUM_SINGLE(AK4458_02_CONTROL3, 2, 152 ARRAY_SIZE(ak4458_dzfb_select_texts), 153 ak4458_dzfb_select_texts); 154 static const struct soc_enum ak4458_sm_enum = 155 SOC_ENUM_SINGLE(AK4458_08_SOUND_CONTROL, 0, 156 ARRAY_SIZE(ak4458_sc_select_texts), 157 ak4458_sc_select_texts); 158 static const struct soc_enum ak4458_fir_enum = 159 SOC_ENUM_SINGLE(AK4458_0C_CONTROL8, 0, 160 ARRAY_SIZE(ak4458_fir_select_texts), 161 ak4458_fir_select_texts); 162 static const struct soc_enum ak4458_ats_enum = 163 SOC_ENUM_SINGLE(AK4458_0B_CONTROL7, 6, 164 ARRAY_SIZE(ak4458_ats_select_texts), 165 ak4458_ats_select_texts); 166 static const struct soc_enum ak4458_dif_enum = 167 SOC_ENUM_SINGLE(AK4458_00_CONTROL1, 3, 168 ARRAY_SIZE(ak4458_dif_select_texts), 169 ak4458_dif_select_texts); 170 171 static int get_digfil(struct snd_kcontrol *kcontrol, 172 struct snd_ctl_elem_value *ucontrol) 173 { 174 struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol); 175 struct ak4458_priv *ak4458 = snd_soc_component_get_drvdata(component); 176 177 ucontrol->value.enumerated.item[0] = ak4458->digfil; 178 179 return 0; 180 } 181 182 static int set_digfil(struct snd_kcontrol *kcontrol, 183 struct snd_ctl_elem_value *ucontrol) 184 { 185 struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol); 186 struct ak4458_priv *ak4458 = snd_soc_component_get_drvdata(component); 187 int num; 188 189 num = ucontrol->value.enumerated.item[0]; 190 if (num > 4) 191 return -EINVAL; 192 193 ak4458->digfil = num; 194 195 /* write SD bit */ 196 snd_soc_component_update_bits(component, AK4458_01_CONTROL2, 197 AK4458_SD_MASK, 198 ((ak4458->digfil & 0x02) << 4)); 199 200 /* write SLOW bit */ 201 snd_soc_component_update_bits(component, AK4458_02_CONTROL3, 202 AK4458_SLOW_MASK, 203 (ak4458->digfil & 0x01)); 204 205 /* write SSLOW bit */ 206 snd_soc_component_update_bits(component, AK4458_05_CONTROL4, 207 AK4458_SSLOW_MASK, 208 ((ak4458->digfil & 0x04) >> 2)); 209 210 return 0; 211 } 212 213 static const struct snd_kcontrol_new ak4458_snd_controls[] = { 214 SOC_DOUBLE_R_TLV("DAC1 Playback Volume", AK4458_03_LCHATT, 215 AK4458_04_RCHATT, 0, 0xFF, 0, dac_tlv), 216 SOC_DOUBLE_R_TLV("DAC2 Playback Volume", AK4458_0F_L2CHATT, 217 AK4458_10_R2CHATT, 0, 0xFF, 0, dac_tlv), 218 SOC_DOUBLE_R_TLV("DAC3 Playback Volume", AK4458_11_L3CHATT, 219 AK4458_12_R3CHATT, 0, 0xFF, 0, dac_tlv), 220 SOC_DOUBLE_R_TLV("DAC4 Playback Volume", AK4458_13_L4CHATT, 221 AK4458_14_R4CHATT, 0, 0xFF, 0, dac_tlv), 222 SOC_ENUM("AK4458 De-emphasis Response DAC1", ak4458_dac1_dem_enum), 223 SOC_ENUM("AK4458 De-emphasis Response DAC2", ak4458_dac2_dem_enum), 224 SOC_ENUM("AK4458 De-emphasis Response DAC3", ak4458_dac3_dem_enum), 225 SOC_ENUM("AK4458 De-emphasis Response DAC4", ak4458_dac4_dem_enum), 226 SOC_ENUM_EXT("AK4458 Digital Filter Setting", ak4458_digfil_enum, 227 get_digfil, set_digfil), 228 SOC_ENUM("AK4458 Inverting Enable of DZFB", ak4458_dzfb_enum), 229 SOC_ENUM("AK4458 Sound Mode", ak4458_sm_enum), 230 SOC_ENUM("AK4458 FIR Filter Mode Setting", ak4458_fir_enum), 231 SOC_ENUM("AK4458 Attenuation transition Time Setting", 232 ak4458_ats_enum), 233 SOC_ENUM("AK4458 BICK fs Setting", ak4458_dif_enum), 234 }; 235 236 /* ak4458 dapm widgets */ 237 static const struct snd_soc_dapm_widget ak4458_dapm_widgets[] = { 238 SND_SOC_DAPM_DAC("AK4458 DAC1", NULL, AK4458_0A_CONTROL6, 2, 0),/*pw*/ 239 SND_SOC_DAPM_AIF_IN("AK4458 SDTI", "Playback", 0, SND_SOC_NOPM, 0, 0), 240 SND_SOC_DAPM_OUTPUT("AK4458 AOUTA"), 241 242 SND_SOC_DAPM_DAC("AK4458 DAC2", NULL, AK4458_0A_CONTROL6, 3, 0),/*pw*/ 243 SND_SOC_DAPM_OUTPUT("AK4458 AOUTB"), 244 245 SND_SOC_DAPM_DAC("AK4458 DAC3", NULL, AK4458_0B_CONTROL7, 2, 0),/*pw*/ 246 SND_SOC_DAPM_OUTPUT("AK4458 AOUTC"), 247 248 SND_SOC_DAPM_DAC("AK4458 DAC4", NULL, AK4458_0B_CONTROL7, 3, 0),/*pw*/ 249 SND_SOC_DAPM_OUTPUT("AK4458 AOUTD"), 250 }; 251 252 static const struct snd_soc_dapm_route ak4458_intercon[] = { 253 {"AK4458 DAC1", NULL, "AK4458 SDTI"}, 254 {"AK4458 AOUTA", NULL, "AK4458 DAC1"}, 255 256 {"AK4458 DAC2", NULL, "AK4458 SDTI"}, 257 {"AK4458 AOUTB", NULL, "AK4458 DAC2"}, 258 259 {"AK4458 DAC3", NULL, "AK4458 SDTI"}, 260 {"AK4458 AOUTC", NULL, "AK4458 DAC3"}, 261 262 {"AK4458 DAC4", NULL, "AK4458 SDTI"}, 263 {"AK4458 AOUTD", NULL, "AK4458 DAC4"}, 264 }; 265 266 /* ak4497 controls */ 267 static const struct snd_kcontrol_new ak4497_snd_controls[] = { 268 SOC_DOUBLE_R_TLV("DAC Playback Volume", AK4458_03_LCHATT, 269 AK4458_04_RCHATT, 0, 0xFF, 0, dac_tlv), 270 SOC_ENUM("AK4497 De-emphasis Response DAC", ak4458_dac1_dem_enum), 271 SOC_ENUM_EXT("AK4497 Digital Filter Setting", ak4458_digfil_enum, 272 get_digfil, set_digfil), 273 SOC_ENUM("AK4497 Inverting Enable of DZFB", ak4458_dzfb_enum), 274 SOC_ENUM("AK4497 Sound Mode", ak4458_sm_enum), 275 SOC_ENUM("AK4497 Attenuation transition Time Setting", 276 ak4458_ats_enum), 277 }; 278 279 /* ak4497 dapm widgets */ 280 static const struct snd_soc_dapm_widget ak4497_dapm_widgets[] = { 281 SND_SOC_DAPM_DAC("AK4497 DAC", NULL, AK4458_0A_CONTROL6, 2, 0), 282 SND_SOC_DAPM_AIF_IN("AK4497 SDTI", "Playback", 0, SND_SOC_NOPM, 0, 0), 283 SND_SOC_DAPM_OUTPUT("AK4497 AOUT"), 284 }; 285 286 /* ak4497 dapm routes */ 287 static const struct snd_soc_dapm_route ak4497_intercon[] = { 288 {"AK4497 DAC", NULL, "AK4497 SDTI"}, 289 {"AK4497 AOUT", NULL, "AK4497 DAC"}, 290 291 }; 292 293 static int ak4458_rstn_control(struct snd_soc_component *component, int bit) 294 { 295 int ret; 296 297 if (bit) 298 ret = snd_soc_component_update_bits(component, 299 AK4458_00_CONTROL1, 300 AK4458_RSTN_MASK, 301 0x1); 302 else 303 ret = snd_soc_component_update_bits(component, 304 AK4458_00_CONTROL1, 305 AK4458_RSTN_MASK, 306 0x0); 307 return ret; 308 } 309 310 static int ak4458_hw_params(struct snd_pcm_substream *substream, 311 struct snd_pcm_hw_params *params, 312 struct snd_soc_dai *dai) 313 { 314 struct snd_soc_component *component = dai->component; 315 struct ak4458_priv *ak4458 = snd_soc_component_get_drvdata(component); 316 int pcm_width = max(params_physical_width(params), ak4458->slot_width); 317 int nfs1; 318 u8 format; 319 320 nfs1 = params_rate(params); 321 ak4458->fs = nfs1; 322 323 /* Master Clock Frequency Auto Setting Mode Enable */ 324 snd_soc_component_update_bits(component, AK4458_00_CONTROL1, 0x80, 0x80); 325 326 switch (pcm_width) { 327 case 16: 328 if (ak4458->fmt == SND_SOC_DAIFMT_I2S) 329 format = AK4458_DIF_24BIT_I2S; 330 else 331 format = AK4458_DIF_16BIT_LSB; 332 break; 333 case 32: 334 switch (ak4458->fmt) { 335 case SND_SOC_DAIFMT_I2S: 336 format = AK4458_DIF_32BIT_I2S; 337 break; 338 case SND_SOC_DAIFMT_LEFT_J: 339 format = AK4458_DIF_32BIT_MSB; 340 break; 341 case SND_SOC_DAIFMT_RIGHT_J: 342 format = AK4458_DIF_32BIT_LSB; 343 break; 344 case SND_SOC_DAIFMT_DSP_B: 345 format = AK4458_DIF_32BIT_MSB; 346 break; 347 default: 348 return -EINVAL; 349 } 350 break; 351 default: 352 return -EINVAL; 353 } 354 355 snd_soc_component_update_bits(component, AK4458_00_CONTROL1, 356 AK4458_DIF_MASK, format); 357 358 ak4458_rstn_control(component, 0); 359 ak4458_rstn_control(component, 1); 360 361 return 0; 362 } 363 364 static int ak4458_set_dai_fmt(struct snd_soc_dai *dai, unsigned int fmt) 365 { 366 struct snd_soc_component *component = dai->component; 367 struct ak4458_priv *ak4458 = snd_soc_component_get_drvdata(component); 368 369 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { 370 case SND_SOC_DAIFMT_CBS_CFS: /* Slave Mode */ 371 break; 372 case SND_SOC_DAIFMT_CBM_CFM: /* Master Mode is not supported */ 373 case SND_SOC_DAIFMT_CBS_CFM: 374 case SND_SOC_DAIFMT_CBM_CFS: 375 default: 376 dev_err(component->dev, "Master mode unsupported\n"); 377 return -EINVAL; 378 } 379 380 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { 381 case SND_SOC_DAIFMT_I2S: 382 case SND_SOC_DAIFMT_LEFT_J: 383 case SND_SOC_DAIFMT_RIGHT_J: 384 case SND_SOC_DAIFMT_DSP_B: 385 ak4458->fmt = fmt & SND_SOC_DAIFMT_FORMAT_MASK; 386 break; 387 default: 388 dev_err(component->dev, "Audio format 0x%02X unsupported\n", 389 fmt & SND_SOC_DAIFMT_FORMAT_MASK); 390 return -EINVAL; 391 } 392 393 ak4458_rstn_control(component, 0); 394 ak4458_rstn_control(component, 1); 395 396 return 0; 397 } 398 399 static const int att_speed[] = { 4080, 2040, 510, 255 }; 400 401 static int ak4458_set_dai_mute(struct snd_soc_dai *dai, int mute) 402 { 403 struct snd_soc_component *component = dai->component; 404 struct ak4458_priv *ak4458 = snd_soc_component_get_drvdata(component); 405 int nfs, ndt, ret, reg; 406 int ats; 407 408 nfs = ak4458->fs; 409 410 reg = snd_soc_component_read32(component, AK4458_0B_CONTROL7); 411 ats = (reg & AK4458_ATS_MASK) >> AK4458_ATS_SHIFT; 412 413 ndt = att_speed[ats] / (nfs / 1000); 414 415 if (mute) { 416 ret = snd_soc_component_update_bits(component, AK4458_01_CONTROL2, 0x01, 1); 417 mdelay(ndt); 418 if (ak4458->mute_gpiod) 419 gpiod_set_value_cansleep(ak4458->mute_gpiod, 1); 420 } else { 421 if (ak4458->mute_gpiod) 422 gpiod_set_value_cansleep(ak4458->mute_gpiod, 0); 423 ret = snd_soc_component_update_bits(component, AK4458_01_CONTROL2, 0x01, 0); 424 mdelay(ndt); 425 } 426 427 return 0; 428 } 429 430 static int ak4458_set_tdm_slot(struct snd_soc_dai *dai, unsigned int tx_mask, 431 unsigned int rx_mask, int slots, int slot_width) 432 { 433 struct snd_soc_component *component = dai->component; 434 struct ak4458_priv *ak4458 = snd_soc_component_get_drvdata(component); 435 int mode; 436 437 ak4458->slots = slots; 438 ak4458->slot_width = slot_width; 439 440 switch (slots * slot_width) { 441 case 128: 442 mode = AK4458_MODE_TDM128; 443 break; 444 case 256: 445 mode = AK4458_MODE_TDM256; 446 break; 447 case 512: 448 mode = AK4458_MODE_TDM512; 449 break; 450 default: 451 mode = AK4458_MODE_NORMAL; 452 break; 453 } 454 455 snd_soc_component_update_bits(component, AK4458_0A_CONTROL6, 456 AK4458_MODE_MASK, 457 mode); 458 459 return 0; 460 } 461 462 #define AK4458_FORMATS (SNDRV_PCM_FMTBIT_S16_LE |\ 463 SNDRV_PCM_FMTBIT_S24_LE |\ 464 SNDRV_PCM_FMTBIT_S32_LE) 465 466 static const unsigned int ak4458_rates[] = { 467 8000, 11025, 16000, 22050, 468 32000, 44100, 48000, 88200, 469 96000, 176400, 192000, 352800, 470 384000, 705600, 768000, 1411200, 471 2822400, 472 }; 473 474 static const struct snd_pcm_hw_constraint_list ak4458_rate_constraints = { 475 .count = ARRAY_SIZE(ak4458_rates), 476 .list = ak4458_rates, 477 }; 478 479 static int ak4458_startup(struct snd_pcm_substream *substream, 480 struct snd_soc_dai *dai) 481 { 482 int ret; 483 484 ret = snd_pcm_hw_constraint_list(substream->runtime, 0, 485 SNDRV_PCM_HW_PARAM_RATE, 486 &ak4458_rate_constraints); 487 488 return ret; 489 } 490 491 static const struct snd_soc_dai_ops ak4458_dai_ops = { 492 .startup = ak4458_startup, 493 .hw_params = ak4458_hw_params, 494 .set_fmt = ak4458_set_dai_fmt, 495 .digital_mute = ak4458_set_dai_mute, 496 .set_tdm_slot = ak4458_set_tdm_slot, 497 }; 498 499 static struct snd_soc_dai_driver ak4458_dai = { 500 .name = "ak4458-aif", 501 .playback = { 502 .stream_name = "Playback", 503 .channels_min = 1, 504 .channels_max = 8, 505 .rates = SNDRV_PCM_RATE_KNOT, 506 .formats = AK4458_FORMATS, 507 }, 508 .ops = &ak4458_dai_ops, 509 }; 510 511 static struct snd_soc_dai_driver ak4497_dai = { 512 .name = "ak4497-aif", 513 .playback = { 514 .stream_name = "Playback", 515 .channels_min = 1, 516 .channels_max = 2, 517 .rates = SNDRV_PCM_RATE_KNOT, 518 .formats = AK4458_FORMATS, 519 }, 520 .ops = &ak4458_dai_ops, 521 }; 522 523 static void ak4458_power_off(struct ak4458_priv *ak4458) 524 { 525 if (ak4458->reset_gpiod) { 526 gpiod_set_value_cansleep(ak4458->reset_gpiod, 0); 527 usleep_range(1000, 2000); 528 } 529 } 530 531 static void ak4458_power_on(struct ak4458_priv *ak4458) 532 { 533 if (ak4458->reset_gpiod) { 534 gpiod_set_value_cansleep(ak4458->reset_gpiod, 1); 535 usleep_range(1000, 2000); 536 } 537 } 538 539 static void ak4458_init(struct snd_soc_component *component) 540 { 541 struct ak4458_priv *ak4458 = snd_soc_component_get_drvdata(component); 542 543 /* External Mute ON */ 544 if (ak4458->mute_gpiod) 545 gpiod_set_value_cansleep(ak4458->mute_gpiod, 1); 546 547 ak4458_power_on(ak4458); 548 549 snd_soc_component_update_bits(component, AK4458_00_CONTROL1, 550 0x80, 0x80); /* ACKS bit = 1; 10000000 */ 551 552 ak4458_rstn_control(component, 1); 553 } 554 555 static int ak4458_probe(struct snd_soc_component *component) 556 { 557 struct ak4458_priv *ak4458 = snd_soc_component_get_drvdata(component); 558 559 ak4458_init(component); 560 561 ak4458->fs = 48000; 562 563 return 0; 564 } 565 566 static void ak4458_remove(struct snd_soc_component *component) 567 { 568 struct ak4458_priv *ak4458 = snd_soc_component_get_drvdata(component); 569 570 ak4458_power_off(ak4458); 571 } 572 573 #ifdef CONFIG_PM 574 static int __maybe_unused ak4458_runtime_suspend(struct device *dev) 575 { 576 struct ak4458_priv *ak4458 = dev_get_drvdata(dev); 577 578 regcache_cache_only(ak4458->regmap, true); 579 580 ak4458_power_off(ak4458); 581 582 if (ak4458->mute_gpiod) 583 gpiod_set_value_cansleep(ak4458->mute_gpiod, 0); 584 585 return 0; 586 } 587 588 static int __maybe_unused ak4458_runtime_resume(struct device *dev) 589 { 590 struct ak4458_priv *ak4458 = dev_get_drvdata(dev); 591 592 if (ak4458->mute_gpiod) 593 gpiod_set_value_cansleep(ak4458->mute_gpiod, 1); 594 595 ak4458_power_off(ak4458); 596 ak4458_power_on(ak4458); 597 598 regcache_cache_only(ak4458->regmap, false); 599 regcache_mark_dirty(ak4458->regmap); 600 601 return regcache_sync(ak4458->regmap); 602 } 603 #endif /* CONFIG_PM */ 604 605 static const struct snd_soc_component_driver soc_codec_dev_ak4458 = { 606 .probe = ak4458_probe, 607 .remove = ak4458_remove, 608 .controls = ak4458_snd_controls, 609 .num_controls = ARRAY_SIZE(ak4458_snd_controls), 610 .dapm_widgets = ak4458_dapm_widgets, 611 .num_dapm_widgets = ARRAY_SIZE(ak4458_dapm_widgets), 612 .dapm_routes = ak4458_intercon, 613 .num_dapm_routes = ARRAY_SIZE(ak4458_intercon), 614 .idle_bias_on = 1, 615 .use_pmdown_time = 1, 616 .endianness = 1, 617 .non_legacy_dai_naming = 1, 618 }; 619 620 static const struct snd_soc_component_driver soc_codec_dev_ak4497 = { 621 .probe = ak4458_probe, 622 .remove = ak4458_remove, 623 .controls = ak4497_snd_controls, 624 .num_controls = ARRAY_SIZE(ak4497_snd_controls), 625 .dapm_widgets = ak4497_dapm_widgets, 626 .num_dapm_widgets = ARRAY_SIZE(ak4497_dapm_widgets), 627 .dapm_routes = ak4497_intercon, 628 .num_dapm_routes = ARRAY_SIZE(ak4497_intercon), 629 .idle_bias_on = 1, 630 .use_pmdown_time = 1, 631 .endianness = 1, 632 .non_legacy_dai_naming = 1, 633 }; 634 635 static const struct regmap_config ak4458_regmap = { 636 .reg_bits = 8, 637 .val_bits = 8, 638 639 .max_register = AK4458_14_R4CHATT, 640 .reg_defaults = ak4458_reg_defaults, 641 .num_reg_defaults = ARRAY_SIZE(ak4458_reg_defaults), 642 .cache_type = REGCACHE_RBTREE, 643 }; 644 645 static const struct ak4458_drvdata ak4458_drvdata = { 646 .dai_drv = &ak4458_dai, 647 .comp_drv = &soc_codec_dev_ak4458, 648 }; 649 650 static const struct ak4458_drvdata ak4497_drvdata = { 651 .dai_drv = &ak4497_dai, 652 .comp_drv = &soc_codec_dev_ak4497, 653 }; 654 655 static const struct dev_pm_ops ak4458_pm = { 656 SET_RUNTIME_PM_OPS(ak4458_runtime_suspend, ak4458_runtime_resume, NULL) 657 SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend, 658 pm_runtime_force_resume) 659 }; 660 661 static int ak4458_i2c_probe(struct i2c_client *i2c) 662 { 663 struct ak4458_priv *ak4458; 664 const struct ak4458_drvdata *drvdata; 665 int ret; 666 667 ak4458 = devm_kzalloc(&i2c->dev, sizeof(*ak4458), GFP_KERNEL); 668 if (!ak4458) 669 return -ENOMEM; 670 671 ak4458->regmap = devm_regmap_init_i2c(i2c, &ak4458_regmap); 672 if (IS_ERR(ak4458->regmap)) 673 return PTR_ERR(ak4458->regmap); 674 675 i2c_set_clientdata(i2c, ak4458); 676 ak4458->dev = &i2c->dev; 677 678 drvdata = of_device_get_match_data(&i2c->dev); 679 680 ak4458->reset_gpiod = devm_gpiod_get_optional(ak4458->dev, "reset", 681 GPIOD_OUT_LOW); 682 if (IS_ERR(ak4458->reset_gpiod)) 683 return PTR_ERR(ak4458->reset_gpiod); 684 685 ak4458->mute_gpiod = devm_gpiod_get_optional(ak4458->dev, "mute", 686 GPIOD_OUT_LOW); 687 if (IS_ERR(ak4458->mute_gpiod)) 688 return PTR_ERR(ak4458->mute_gpiod); 689 690 ret = devm_snd_soc_register_component(ak4458->dev, drvdata->comp_drv, 691 drvdata->dai_drv, 1); 692 if (ret < 0) { 693 dev_err(ak4458->dev, "Failed to register CODEC: %d\n", ret); 694 return ret; 695 } 696 697 pm_runtime_enable(&i2c->dev); 698 699 return 0; 700 } 701 702 static int ak4458_i2c_remove(struct i2c_client *i2c) 703 { 704 pm_runtime_disable(&i2c->dev); 705 706 return 0; 707 } 708 709 static const struct of_device_id ak4458_of_match[] = { 710 { .compatible = "asahi-kasei,ak4458", .data = &ak4458_drvdata}, 711 { .compatible = "asahi-kasei,ak4497", .data = &ak4497_drvdata}, 712 { }, 713 }; 714 715 static struct i2c_driver ak4458_i2c_driver = { 716 .driver = { 717 .name = "ak4458", 718 .pm = &ak4458_pm, 719 .of_match_table = ak4458_of_match, 720 }, 721 .probe_new = ak4458_i2c_probe, 722 .remove = ak4458_i2c_remove, 723 }; 724 725 module_i2c_driver(ak4458_i2c_driver); 726 727 MODULE_AUTHOR("Junichi Wakasugi <wakasugi.jb@om.asahi-kasei.co.jp>"); 728 MODULE_AUTHOR("Mihai Serban <mihai.serban@nxp.com>"); 729 MODULE_DESCRIPTION("ASoC AK4458 DAC driver"); 730 MODULE_LICENSE("GPL v2"); 731