1// SPDX-License-Identifier: GPL-2.0-only 2/* 3 * max98926.c -- ALSA SoC MAX98926 driver 4 * Copyright 2013-15 Maxim Integrated Products 5 */ 6#include <linux/delay.h> 7#include <linux/i2c.h> 8#include <linux/module.h> 9#include <linux/regmap.h> 10#include <linux/slab.h> 11#include <linux/cdev.h> 12#include <sound/pcm.h> 13#include <sound/pcm_params.h> 14#include <sound/soc.h> 15#include <sound/tlv.h> 16#include "max98926.h" 17 18static const char * const max98926_boost_voltage_txt[] = { 19 "8.5V", "8.25V", "8.0V", "7.75V", "7.5V", "7.25V", "7.0V", "6.75V", 20 "6.5V", "6.5V", "6.5V", "6.5V", "6.5V", "6.5V", "6.5V", "6.5V" 21}; 22 23static const char *const max98926_pdm_ch_text[] = { 24 "Current", "Voltage", 25}; 26 27static const char *const max98926_hpf_cutoff_txt[] = { 28 "Disable", "DC Block", "100Hz", 29 "200Hz", "400Hz", "800Hz", 30}; 31 32static const struct reg_default max98926_reg[] = { 33 { 0x0B, 0x00 }, /* IRQ Enable0 */ 34 { 0x0C, 0x00 }, /* IRQ Enable1 */ 35 { 0x0D, 0x00 }, /* IRQ Enable2 */ 36 { 0x0E, 0x00 }, /* IRQ Clear0 */ 37 { 0x0F, 0x00 }, /* IRQ Clear1 */ 38 { 0x10, 0x00 }, /* IRQ Clear2 */ 39 { 0x11, 0xC0 }, /* Map0 */ 40 { 0x12, 0x00 }, /* Map1 */ 41 { 0x13, 0x00 }, /* Map2 */ 42 { 0x14, 0xF0 }, /* Map3 */ 43 { 0x15, 0x00 }, /* Map4 */ 44 { 0x16, 0xAB }, /* Map5 */ 45 { 0x17, 0x89 }, /* Map6 */ 46 { 0x18, 0x00 }, /* Map7 */ 47 { 0x19, 0x00 }, /* Map8 */ 48 { 0x1A, 0x04 }, /* DAI Clock Mode 1 */ 49 { 0x1B, 0x00 }, /* DAI Clock Mode 2 */ 50 { 0x1C, 0x00 }, /* DAI Clock Divider Denominator MSBs */ 51 { 0x1D, 0x00 }, /* DAI Clock Divider Denominator LSBs */ 52 { 0x1E, 0xF0 }, /* DAI Clock Divider Numerator MSBs */ 53 { 0x1F, 0x00 }, /* DAI Clock Divider Numerator LSBs */ 54 { 0x20, 0x50 }, /* Format */ 55 { 0x21, 0x00 }, /* TDM Slot Select */ 56 { 0x22, 0x00 }, /* DOUT Configuration VMON */ 57 { 0x23, 0x00 }, /* DOUT Configuration IMON */ 58 { 0x24, 0x00 }, /* DOUT Configuration VBAT */ 59 { 0x25, 0x00 }, /* DOUT Configuration VBST */ 60 { 0x26, 0x00 }, /* DOUT Configuration FLAG */ 61 { 0x27, 0xFF }, /* DOUT HiZ Configuration 1 */ 62 { 0x28, 0xFF }, /* DOUT HiZ Configuration 2 */ 63 { 0x29, 0xFF }, /* DOUT HiZ Configuration 3 */ 64 { 0x2A, 0xFF }, /* DOUT HiZ Configuration 4 */ 65 { 0x2B, 0x02 }, /* DOUT Drive Strength */ 66 { 0x2C, 0x90 }, /* Filters */ 67 { 0x2D, 0x00 }, /* Gain */ 68 { 0x2E, 0x02 }, /* Gain Ramping */ 69 { 0x2F, 0x00 }, /* Speaker Amplifier */ 70 { 0x30, 0x0A }, /* Threshold */ 71 { 0x31, 0x00 }, /* ALC Attack */ 72 { 0x32, 0x80 }, /* ALC Atten and Release */ 73 { 0x33, 0x00 }, /* ALC Infinite Hold Release */ 74 { 0x34, 0x92 }, /* ALC Configuration */ 75 { 0x35, 0x01 }, /* Boost Converter */ 76 { 0x36, 0x00 }, /* Block Enable */ 77 { 0x37, 0x00 }, /* Configuration */ 78 { 0x38, 0x00 }, /* Global Enable */ 79 { 0x3A, 0x00 }, /* Boost Limiter */ 80}; 81 82static const struct soc_enum max98926_voltage_enum[] = { 83 SOC_ENUM_SINGLE(MAX98926_DAI_CLK_DIV_N_LSBS, 0, 84 ARRAY_SIZE(max98926_pdm_ch_text), 85 max98926_pdm_ch_text), 86}; 87 88static const struct snd_kcontrol_new max98926_voltage_control = 89 SOC_DAPM_ENUM("Route", max98926_voltage_enum); 90 91static const struct soc_enum max98926_current_enum[] = { 92 SOC_ENUM_SINGLE(MAX98926_DAI_CLK_DIV_N_LSBS, 93 MAX98926_PDM_SOURCE_1_SHIFT, 94 ARRAY_SIZE(max98926_pdm_ch_text), 95 max98926_pdm_ch_text), 96}; 97 98static const struct snd_kcontrol_new max98926_current_control = 99 SOC_DAPM_ENUM("Route", max98926_current_enum); 100 101static const struct snd_kcontrol_new max98926_mixer_controls[] = { 102 SOC_DAPM_SINGLE("PCM Single Switch", MAX98926_SPK_AMP, 103 MAX98926_INSELECT_MODE_SHIFT, 0, 0), 104 SOC_DAPM_SINGLE("PDM Single Switch", MAX98926_SPK_AMP, 105 MAX98926_INSELECT_MODE_SHIFT, 1, 0), 106}; 107 108static const struct snd_kcontrol_new max98926_dai_controls[] = { 109 SOC_DAPM_SINGLE("Left", MAX98926_GAIN, 110 MAX98926_DAC_IN_SEL_SHIFT, 0, 0), 111 SOC_DAPM_SINGLE("Right", MAX98926_GAIN, 112 MAX98926_DAC_IN_SEL_SHIFT, 1, 0), 113 SOC_DAPM_SINGLE("LeftRight", MAX98926_GAIN, 114 MAX98926_DAC_IN_SEL_SHIFT, 2, 0), 115 SOC_DAPM_SINGLE("(Left+Right)/2 Switch", MAX98926_GAIN, 116 MAX98926_DAC_IN_SEL_SHIFT, 3, 0), 117}; 118 119static const struct snd_soc_dapm_widget max98926_dapm_widgets[] = { 120 SND_SOC_DAPM_AIF_IN("DAI_OUT", "HiFi Playback", 0, 121 SND_SOC_NOPM, 0, 0), 122 SND_SOC_DAPM_DAC("Amp Enable", NULL, MAX98926_BLOCK_ENABLE, 123 MAX98926_SPK_EN_SHIFT, 0), 124 SND_SOC_DAPM_SUPPLY("Global Enable", MAX98926_GLOBAL_ENABLE, 125 MAX98926_EN_SHIFT, 0, NULL, 0), 126 SND_SOC_DAPM_SUPPLY("VI Enable", MAX98926_BLOCK_ENABLE, 127 MAX98926_ADC_IMON_EN_WIDTH | 128 MAX98926_ADC_VMON_EN_SHIFT, 129 0, NULL, 0), 130 SND_SOC_DAPM_PGA("BST Enable", MAX98926_BLOCK_ENABLE, 131 MAX98926_BST_EN_SHIFT, 0, NULL, 0), 132 SND_SOC_DAPM_OUTPUT("BE_OUT"), 133 SND_SOC_DAPM_MIXER("PCM Sel", MAX98926_SPK_AMP, 134 MAX98926_INSELECT_MODE_SHIFT, 0, 135 &max98926_mixer_controls[0], 136 ARRAY_SIZE(max98926_mixer_controls)), 137 SND_SOC_DAPM_MIXER("DAI Sel", 138 MAX98926_GAIN, MAX98926_DAC_IN_SEL_SHIFT, 0, 139 &max98926_dai_controls[0], 140 ARRAY_SIZE(max98926_dai_controls)), 141 SND_SOC_DAPM_MUX("PDM CH1 Source", 142 MAX98926_DAI_CLK_DIV_N_LSBS, 143 MAX98926_PDM_CURRENT_SHIFT, 144 0, &max98926_current_control), 145 SND_SOC_DAPM_MUX("PDM CH0 Source", 146 MAX98926_DAI_CLK_DIV_N_LSBS, 147 MAX98926_PDM_VOLTAGE_SHIFT, 148 0, &max98926_voltage_control), 149}; 150 151static const struct snd_soc_dapm_route max98926_audio_map[] = { 152 {"VI Enable", NULL, "DAI_OUT"}, 153 {"DAI Sel", "Left", "VI Enable"}, 154 {"DAI Sel", "Right", "VI Enable"}, 155 {"DAI Sel", "LeftRight", "VI Enable"}, 156 {"DAI Sel", "LeftRightDiv2", "VI Enable"}, 157 {"PCM Sel", "PCM", "DAI Sel"}, 158 159 {"PDM CH1 Source", "Current", "DAI_OUT"}, 160 {"PDM CH1 Source", "Voltage", "DAI_OUT"}, 161 {"PDM CH0 Source", "Current", "DAI_OUT"}, 162 {"PDM CH0 Source", "Voltage", "DAI_OUT"}, 163 {"PCM Sel", "Analog", "PDM CH1 Source"}, 164 {"PCM Sel", "Analog", "PDM CH0 Source"}, 165 {"Amp Enable", NULL, "PCM Sel"}, 166 167 {"BST Enable", NULL, "Amp Enable"}, 168 {"BE_OUT", NULL, "BST Enable"}, 169}; 170 171static bool max98926_volatile_register(struct device *dev, unsigned int reg) 172{ 173 switch (reg) { 174 case MAX98926_VBAT_DATA: 175 case MAX98926_VBST_DATA: 176 case MAX98926_LIVE_STATUS0: 177 case MAX98926_LIVE_STATUS1: 178 case MAX98926_LIVE_STATUS2: 179 case MAX98926_STATE0: 180 case MAX98926_STATE1: 181 case MAX98926_STATE2: 182 case MAX98926_FLAG0: 183 case MAX98926_FLAG1: 184 case MAX98926_FLAG2: 185 case MAX98926_VERSION: 186 return true; 187 default: 188 return false; 189 } 190} 191 192static bool max98926_readable_register(struct device *dev, unsigned int reg) 193{ 194 switch (reg) { 195 case MAX98926_IRQ_CLEAR0: 196 case MAX98926_IRQ_CLEAR1: 197 case MAX98926_IRQ_CLEAR2: 198 case MAX98926_ALC_HOLD_RLS: 199 return false; 200 default: 201 return true; 202 } 203}; 204 205static DECLARE_TLV_DB_SCALE(max98926_spk_tlv, -600, 100, 0); 206static DECLARE_TLV_DB_RANGE(max98926_current_tlv, 207 0, 11, TLV_DB_SCALE_ITEM(20, 20, 0), 208 12, 15, TLV_DB_SCALE_ITEM(320, 40, 0), 209); 210 211static SOC_ENUM_SINGLE_DECL(max98926_dac_hpf_cutoff, 212 MAX98926_FILTERS, MAX98926_DAC_HPF_SHIFT, 213 max98926_hpf_cutoff_txt); 214 215static SOC_ENUM_SINGLE_DECL(max98926_boost_voltage, 216 MAX98926_CONFIGURATION, MAX98926_BST_VOUT_SHIFT, 217 max98926_boost_voltage_txt); 218 219static const struct snd_kcontrol_new max98926_snd_controls[] = { 220 SOC_SINGLE_TLV("Speaker Volume", MAX98926_GAIN, 221 MAX98926_SPK_GAIN_SHIFT, 222 (1<<MAX98926_SPK_GAIN_WIDTH)-1, 0, 223 max98926_spk_tlv), 224 SOC_SINGLE("Ramp Switch", MAX98926_GAIN_RAMPING, 225 MAX98926_SPK_RMP_EN_SHIFT, 1, 0), 226 SOC_SINGLE("ZCD Switch", MAX98926_GAIN_RAMPING, 227 MAX98926_SPK_ZCD_EN_SHIFT, 1, 0), 228 SOC_SINGLE("ALC Switch", MAX98926_THRESHOLD, 229 MAX98926_ALC_EN_SHIFT, 1, 0), 230 SOC_SINGLE("ALC Threshold", MAX98926_THRESHOLD, 231 MAX98926_ALC_TH_SHIFT, 232 (1<<MAX98926_ALC_TH_WIDTH)-1, 0), 233 SOC_ENUM("Boost Output Voltage", max98926_boost_voltage), 234 SOC_SINGLE_TLV("Boost Current Limit", MAX98926_BOOST_LIMITER, 235 MAX98926_BST_ILIM_SHIFT, 236 (1<<MAX98926_BST_ILIM_SHIFT)-1, 0, 237 max98926_current_tlv), 238 SOC_ENUM("DAC HPF Cutoff", max98926_dac_hpf_cutoff), 239 SOC_DOUBLE("PDM Channel One", MAX98926_DAI_CLK_DIV_N_LSBS, 240 MAX98926_PDM_CHANNEL_1_SHIFT, 241 MAX98926_PDM_CHANNEL_1_HIZ, 1, 0), 242 SOC_DOUBLE("PDM Channel Zero", MAX98926_DAI_CLK_DIV_N_LSBS, 243 MAX98926_PDM_CHANNEL_0_SHIFT, 244 MAX98926_PDM_CHANNEL_0_HIZ, 1, 0), 245}; 246 247static const struct { 248 int rate; 249 int sr; 250} rate_table[] = { 251 { 252 .rate = 8000, 253 .sr = 0, 254 }, 255 { 256 .rate = 11025, 257 .sr = 1, 258 }, 259 { 260 .rate = 12000, 261 .sr = 2, 262 }, 263 { 264 .rate = 16000, 265 .sr = 3, 266 }, 267 { 268 .rate = 22050, 269 .sr = 4, 270 }, 271 { 272 .rate = 24000, 273 .sr = 5, 274 }, 275 { 276 .rate = 32000, 277 .sr = 6, 278 }, 279 { 280 .rate = 44100, 281 .sr = 7, 282 }, 283 { 284 .rate = 48000, 285 .sr = 8, 286 }, 287}; 288 289static void max98926_set_sense_data(struct max98926_priv *max98926) 290{ 291 regmap_update_bits(max98926->regmap, 292 MAX98926_DOUT_CFG_VMON, 293 MAX98926_DAI_VMON_EN_MASK, 294 MAX98926_DAI_VMON_EN_MASK); 295 regmap_update_bits(max98926->regmap, 296 MAX98926_DOUT_CFG_IMON, 297 MAX98926_DAI_IMON_EN_MASK, 298 MAX98926_DAI_IMON_EN_MASK); 299 300 if (!max98926->interleave_mode) { 301 /* set VMON slots */ 302 regmap_update_bits(max98926->regmap, 303 MAX98926_DOUT_CFG_VMON, 304 MAX98926_DAI_VMON_SLOT_MASK, 305 max98926->v_slot); 306 /* set IMON slots */ 307 regmap_update_bits(max98926->regmap, 308 MAX98926_DOUT_CFG_IMON, 309 MAX98926_DAI_IMON_SLOT_MASK, 310 max98926->i_slot); 311 } else { 312 /* enable interleave mode */ 313 regmap_update_bits(max98926->regmap, 314 MAX98926_FORMAT, 315 MAX98926_DAI_INTERLEAVE_MASK, 316 MAX98926_DAI_INTERLEAVE_MASK); 317 /* set interleave slots */ 318 regmap_update_bits(max98926->regmap, 319 MAX98926_DOUT_CFG_VBAT, 320 MAX98926_DAI_INTERLEAVE_SLOT_MASK, 321 max98926->v_slot); 322 } 323} 324 325static int max98926_dai_set_fmt(struct snd_soc_dai *codec_dai, 326 unsigned int fmt) 327{ 328 struct snd_soc_component *component = codec_dai->component; 329 struct max98926_priv *max98926 = snd_soc_component_get_drvdata(component); 330 unsigned int invert = 0; 331 332 dev_dbg(component->dev, "%s: fmt 0x%08X\n", __func__, fmt); 333 334 switch (fmt & SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK) { 335 case SND_SOC_DAIFMT_CBC_CFC: 336 max98926_set_sense_data(max98926); 337 break; 338 default: 339 dev_err(component->dev, "DAI clock mode unsupported\n"); 340 return -EINVAL; 341 } 342 343 switch (fmt & SND_SOC_DAIFMT_INV_MASK) { 344 case SND_SOC_DAIFMT_NB_NF: 345 break; 346 case SND_SOC_DAIFMT_NB_IF: 347 invert = MAX98926_DAI_WCI_MASK; 348 break; 349 case SND_SOC_DAIFMT_IB_NF: 350 invert = MAX98926_DAI_BCI_MASK; 351 break; 352 case SND_SOC_DAIFMT_IB_IF: 353 invert = MAX98926_DAI_BCI_MASK | MAX98926_DAI_WCI_MASK; 354 break; 355 default: 356 dev_err(component->dev, "DAI invert mode unsupported\n"); 357 return -EINVAL; 358 } 359 360 regmap_write(max98926->regmap, 361 MAX98926_FORMAT, MAX98926_DAI_DLY_MASK); 362 regmap_update_bits(max98926->regmap, MAX98926_FORMAT, 363 MAX98926_DAI_BCI_MASK, invert); 364 return 0; 365} 366 367static int max98926_dai_hw_params(struct snd_pcm_substream *substream, 368 struct snd_pcm_hw_params *params, 369 struct snd_soc_dai *dai) 370{ 371 int dai_sr = -EINVAL; 372 int rate = params_rate(params), i; 373 struct snd_soc_component *component = dai->component; 374 struct max98926_priv *max98926 = snd_soc_component_get_drvdata(component); 375 int blr_clk_ratio; 376 377 switch (params_format(params)) { 378 case SNDRV_PCM_FORMAT_S16_LE: 379 regmap_update_bits(max98926->regmap, 380 MAX98926_FORMAT, 381 MAX98926_DAI_CHANSZ_MASK, 382 MAX98926_DAI_CHANSZ_16); 383 max98926->ch_size = 16; 384 break; 385 case SNDRV_PCM_FORMAT_S24_LE: 386 regmap_update_bits(max98926->regmap, 387 MAX98926_FORMAT, 388 MAX98926_DAI_CHANSZ_MASK, 389 MAX98926_DAI_CHANSZ_24); 390 max98926->ch_size = 24; 391 break; 392 case SNDRV_PCM_FORMAT_S32_LE: 393 regmap_update_bits(max98926->regmap, 394 MAX98926_FORMAT, 395 MAX98926_DAI_CHANSZ_MASK, 396 MAX98926_DAI_CHANSZ_32); 397 max98926->ch_size = 32; 398 break; 399 default: 400 dev_dbg(component->dev, "format unsupported %d\n", 401 params_format(params)); 402 return -EINVAL; 403 } 404 405 /* BCLK/LRCLK ratio calculation */ 406 blr_clk_ratio = params_channels(params) * max98926->ch_size; 407 408 switch (blr_clk_ratio) { 409 case 32: 410 regmap_update_bits(max98926->regmap, 411 MAX98926_DAI_CLK_MODE2, 412 MAX98926_DAI_BSEL_MASK, 413 MAX98926_DAI_BSEL_32); 414 break; 415 case 48: 416 regmap_update_bits(max98926->regmap, 417 MAX98926_DAI_CLK_MODE2, 418 MAX98926_DAI_BSEL_MASK, 419 MAX98926_DAI_BSEL_48); 420 break; 421 case 64: 422 regmap_update_bits(max98926->regmap, 423 MAX98926_DAI_CLK_MODE2, 424 MAX98926_DAI_BSEL_MASK, 425 MAX98926_DAI_BSEL_64); 426 break; 427 default: 428 return -EINVAL; 429 } 430 431 /* find the closest rate */ 432 for (i = 0; i < ARRAY_SIZE(rate_table); i++) { 433 if (rate_table[i].rate >= rate) { 434 dai_sr = rate_table[i].sr; 435 break; 436 } 437 } 438 if (dai_sr < 0) 439 return -EINVAL; 440 441 /* set DAI_SR to correct LRCLK frequency */ 442 regmap_update_bits(max98926->regmap, 443 MAX98926_DAI_CLK_MODE2, 444 MAX98926_DAI_SR_MASK, dai_sr << MAX98926_DAI_SR_SHIFT); 445 return 0; 446} 447 448#define MAX98926_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | \ 449 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE) 450 451static const struct snd_soc_dai_ops max98926_dai_ops = { 452 .set_fmt = max98926_dai_set_fmt, 453 .hw_params = max98926_dai_hw_params, 454}; 455 456static struct snd_soc_dai_driver max98926_dai[] = { 457{ 458 .name = "max98926-aif1", 459 .playback = { 460 .stream_name = "HiFi Playback", 461 .channels_min = 1, 462 .channels_max = 2, 463 .rates = SNDRV_PCM_RATE_8000_48000, 464 .formats = MAX98926_FORMATS, 465 }, 466 .capture = { 467 .stream_name = "HiFi Capture", 468 .channels_min = 1, 469 .channels_max = 2, 470 .rates = SNDRV_PCM_RATE_8000_48000, 471 .formats = MAX98926_FORMATS, 472 }, 473 .ops = &max98926_dai_ops, 474} 475}; 476 477static int max98926_probe(struct snd_soc_component *component) 478{ 479 struct max98926_priv *max98926 = snd_soc_component_get_drvdata(component); 480 481 max98926->component = component; 482 483 /* Hi-Z all the slots */ 484 regmap_write(max98926->regmap, MAX98926_DOUT_HIZ_CFG4, 0xF0); 485 return 0; 486} 487 488static const struct snd_soc_component_driver soc_component_dev_max98926 = { 489 .probe = max98926_probe, 490 .controls = max98926_snd_controls, 491 .num_controls = ARRAY_SIZE(max98926_snd_controls), 492 .dapm_routes = max98926_audio_map, 493 .num_dapm_routes = ARRAY_SIZE(max98926_audio_map), 494 .dapm_widgets = max98926_dapm_widgets, 495 .num_dapm_widgets = ARRAY_SIZE(max98926_dapm_widgets), 496 .idle_bias_on = 1, 497 .use_pmdown_time = 1, 498 .endianness = 1, 499}; 500 501static const struct regmap_config max98926_regmap = { 502 .reg_bits = 8, 503 .val_bits = 8, 504 .max_register = MAX98926_VERSION, 505 .reg_defaults = max98926_reg, 506 .num_reg_defaults = ARRAY_SIZE(max98926_reg), 507 .volatile_reg = max98926_volatile_register, 508 .readable_reg = max98926_readable_register, 509 .cache_type = REGCACHE_RBTREE, 510}; 511 512static int max98926_i2c_probe(struct i2c_client *i2c) 513{ 514 int ret, reg; 515 u32 value; 516 struct max98926_priv *max98926; 517 518 max98926 = devm_kzalloc(&i2c->dev, 519 sizeof(*max98926), GFP_KERNEL); 520 if (!max98926) 521 return -ENOMEM; 522 523 i2c_set_clientdata(i2c, max98926); 524 max98926->regmap = devm_regmap_init_i2c(i2c, &max98926_regmap); 525 if (IS_ERR(max98926->regmap)) { 526 ret = PTR_ERR(max98926->regmap); 527 dev_err(&i2c->dev, 528 "Failed to allocate regmap: %d\n", ret); 529 goto err_out; 530 } 531 if (of_property_read_bool(i2c->dev.of_node, "maxim,interleave-mode") || 532 of_property_read_bool(i2c->dev.of_node, "interleave-mode")) 533 max98926->interleave_mode = true; 534 535 if (!of_property_read_u32(i2c->dev.of_node, "vmon-slot-no", &value)) { 536 if (value > MAX98926_DAI_VMON_SLOT_1E_1F) { 537 dev_err(&i2c->dev, "vmon slot number is wrong:\n"); 538 return -EINVAL; 539 } 540 max98926->v_slot = value; 541 } 542 if (!of_property_read_u32(i2c->dev.of_node, "imon-slot-no", &value)) { 543 if (value > MAX98926_DAI_IMON_SLOT_1E_1F) { 544 dev_err(&i2c->dev, "imon slot number is wrong:\n"); 545 return -EINVAL; 546 } 547 max98926->i_slot = value; 548 } 549 ret = regmap_read(max98926->regmap, 550 MAX98926_VERSION, ®); 551 if (ret < 0) { 552 dev_err(&i2c->dev, "Failed to read: %x\n", reg); 553 return ret; 554 } 555 556 ret = devm_snd_soc_register_component(&i2c->dev, 557 &soc_component_dev_max98926, 558 max98926_dai, ARRAY_SIZE(max98926_dai)); 559 if (ret < 0) 560 dev_err(&i2c->dev, 561 "Failed to register component: %d\n", ret); 562 dev_info(&i2c->dev, "device version: %x\n", reg); 563err_out: 564 return ret; 565} 566 567static const struct i2c_device_id max98926_i2c_id[] = { 568 { "max98926", 0 }, 569 { } 570}; 571MODULE_DEVICE_TABLE(i2c, max98926_i2c_id); 572 573#ifdef CONFIG_OF 574static const struct of_device_id max98926_of_match[] = { 575 { .compatible = "maxim,max98926", }, 576 { } 577}; 578MODULE_DEVICE_TABLE(of, max98926_of_match); 579#endif 580 581static struct i2c_driver max98926_i2c_driver = { 582 .driver = { 583 .name = "max98926", 584 .of_match_table = of_match_ptr(max98926_of_match), 585 }, 586 .probe = max98926_i2c_probe, 587 .id_table = max98926_i2c_id, 588}; 589 590module_i2c_driver(max98926_i2c_driver) 591MODULE_DESCRIPTION("ALSA SoC MAX98926 driver"); 592MODULE_AUTHOR("Anish kumar <anish.kumar@maximintegrated.com>"); 593MODULE_LICENSE("GPL"); 594