1// SPDX-License-Identifier: GPL-2.0 2/* 3 * MediaTek ALSA SoC AFE platform driver for MT7986 4 * 5 * Copyright (c) 2023 MediaTek Inc. 6 * Authors: Vic Wu <vic.wu@mediatek.com> 7 * Maso Huang <maso.huang@mediatek.com> 8 */ 9 10#include <linux/clk.h> 11#include <linux/delay.h> 12#include <linux/module.h> 13#include <linux/of.h> 14#include <linux/of_address.h> 15#include <linux/pm_runtime.h> 16 17#include "mt7986-afe-common.h" 18#include "mt7986-reg.h" 19#include "../common/mtk-afe-platform-driver.h" 20#include "../common/mtk-afe-fe-dai.h" 21 22enum { 23 MTK_AFE_RATE_8K = 0, 24 MTK_AFE_RATE_11K = 1, 25 MTK_AFE_RATE_12K = 2, 26 MTK_AFE_RATE_16K = 4, 27 MTK_AFE_RATE_22K = 5, 28 MTK_AFE_RATE_24K = 6, 29 MTK_AFE_RATE_32K = 8, 30 MTK_AFE_RATE_44K = 9, 31 MTK_AFE_RATE_48K = 10, 32 MTK_AFE_RATE_88K = 13, 33 MTK_AFE_RATE_96K = 14, 34 MTK_AFE_RATE_176K = 17, 35 MTK_AFE_RATE_192K = 18, 36}; 37 38enum { 39 CLK_INFRA_AUD_BUS_CK = 0, 40 CLK_INFRA_AUD_26M_CK, 41 CLK_INFRA_AUD_L_CK, 42 CLK_INFRA_AUD_AUD_CK, 43 CLK_INFRA_AUD_EG2_CK, 44 CLK_NUM 45}; 46 47static const char *aud_clks[CLK_NUM] = { 48 [CLK_INFRA_AUD_BUS_CK] = "aud_bus_ck", 49 [CLK_INFRA_AUD_26M_CK] = "aud_26m_ck", 50 [CLK_INFRA_AUD_L_CK] = "aud_l_ck", 51 [CLK_INFRA_AUD_AUD_CK] = "aud_aud_ck", 52 [CLK_INFRA_AUD_EG2_CK] = "aud_eg2_ck", 53}; 54 55unsigned int mt7986_afe_rate_transform(struct device *dev, unsigned int rate) 56{ 57 switch (rate) { 58 case 8000: 59 return MTK_AFE_RATE_8K; 60 case 11025: 61 return MTK_AFE_RATE_11K; 62 case 12000: 63 return MTK_AFE_RATE_12K; 64 case 16000: 65 return MTK_AFE_RATE_16K; 66 case 22050: 67 return MTK_AFE_RATE_22K; 68 case 24000: 69 return MTK_AFE_RATE_24K; 70 case 32000: 71 return MTK_AFE_RATE_32K; 72 case 44100: 73 return MTK_AFE_RATE_44K; 74 case 48000: 75 return MTK_AFE_RATE_48K; 76 case 88200: 77 return MTK_AFE_RATE_88K; 78 case 96000: 79 return MTK_AFE_RATE_96K; 80 case 176400: 81 return MTK_AFE_RATE_176K; 82 case 192000: 83 return MTK_AFE_RATE_192K; 84 default: 85 dev_warn(dev, "%s(), rate %u invalid, using %d!!!\n", 86 __func__, rate, MTK_AFE_RATE_48K); 87 return MTK_AFE_RATE_48K; 88 } 89} 90 91static const struct snd_pcm_hardware mt7986_afe_hardware = { 92 .info = SNDRV_PCM_INFO_MMAP | 93 SNDRV_PCM_INFO_INTERLEAVED | 94 SNDRV_PCM_INFO_MMAP_VALID, 95 .formats = SNDRV_PCM_FMTBIT_S16_LE | 96 SNDRV_PCM_FMTBIT_S24_LE | 97 SNDRV_PCM_FMTBIT_S32_LE, 98 .period_bytes_min = 256, 99 .period_bytes_max = 4 * 48 * 1024, 100 .periods_min = 2, 101 .periods_max = 256, 102 .buffer_bytes_max = 8 * 48 * 1024, 103 .fifo_size = 0, 104}; 105 106static int mt7986_memif_fs(struct snd_pcm_substream *substream, 107 unsigned int rate) 108{ 109 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream); 110 struct snd_soc_component *component = snd_soc_rtdcom_lookup(rtd, AFE_PCM_NAME); 111 struct mtk_base_afe *afe = snd_soc_component_get_drvdata(component); 112 113 return mt7986_afe_rate_transform(afe->dev, rate); 114} 115 116static int mt7986_irq_fs(struct snd_pcm_substream *substream, 117 unsigned int rate) 118{ 119 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream); 120 struct snd_soc_component *component = snd_soc_rtdcom_lookup(rtd, AFE_PCM_NAME); 121 struct mtk_base_afe *afe = snd_soc_component_get_drvdata(component); 122 123 return mt7986_afe_rate_transform(afe->dev, rate); 124} 125 126#define MTK_PCM_RATES (SNDRV_PCM_RATE_8000_48000 |\ 127 SNDRV_PCM_RATE_88200 |\ 128 SNDRV_PCM_RATE_96000 |\ 129 SNDRV_PCM_RATE_176400 |\ 130 SNDRV_PCM_RATE_192000) 131 132#define MTK_PCM_FORMATS (SNDRV_PCM_FMTBIT_S16_LE |\ 133 SNDRV_PCM_FMTBIT_S24_LE |\ 134 SNDRV_PCM_FMTBIT_S32_LE) 135 136static struct snd_soc_dai_driver mt7986_memif_dai_driver[] = { 137 /* FE DAIs: memory intefaces to CPU */ 138 { 139 .name = "DL1", 140 .id = MT7986_MEMIF_DL1, 141 .playback = { 142 .stream_name = "DL1", 143 .channels_min = 1, 144 .channels_max = 2, 145 .rates = MTK_PCM_RATES, 146 .formats = MTK_PCM_FORMATS, 147 }, 148 .ops = &mtk_afe_fe_ops, 149 }, 150 { 151 .name = "UL1", 152 .id = MT7986_MEMIF_VUL12, 153 .capture = { 154 .stream_name = "UL1", 155 .channels_min = 1, 156 .channels_max = 2, 157 .rates = MTK_PCM_RATES, 158 .formats = MTK_PCM_FORMATS, 159 }, 160 .ops = &mtk_afe_fe_ops, 161 }, 162}; 163 164static const struct snd_kcontrol_new o018_mix[] = { 165 SOC_DAPM_SINGLE_AUTODISABLE("I150_Switch", AFE_CONN018_4, 22, 1, 0), 166}; 167 168static const struct snd_kcontrol_new o019_mix[] = { 169 SOC_DAPM_SINGLE_AUTODISABLE("I151_Switch", AFE_CONN019_4, 23, 1, 0), 170}; 171 172static const struct snd_soc_dapm_widget mt7986_memif_widgets[] = { 173 /* DL */ 174 SND_SOC_DAPM_MIXER("I032", SND_SOC_NOPM, 0, 0, NULL, 0), 175 SND_SOC_DAPM_MIXER("I033", SND_SOC_NOPM, 0, 0, NULL, 0), 176 177 /* UL */ 178 SND_SOC_DAPM_MIXER("O018", SND_SOC_NOPM, 0, 0, 179 o018_mix, ARRAY_SIZE(o018_mix)), 180 SND_SOC_DAPM_MIXER("O019", SND_SOC_NOPM, 0, 0, 181 o019_mix, ARRAY_SIZE(o019_mix)), 182}; 183 184static const struct snd_soc_dapm_route mt7986_memif_routes[] = { 185 {"I032", NULL, "DL1"}, 186 {"I033", NULL, "DL1"}, 187 {"UL1", NULL, "O018"}, 188 {"UL1", NULL, "O019"}, 189 {"O018", "I150_Switch", "I150"}, 190 {"O019", "I151_Switch", "I151"}, 191}; 192 193static const struct snd_soc_component_driver mt7986_afe_pcm_dai_component = { 194 .name = "mt7986-afe-pcm-dai", 195}; 196 197static const struct mtk_base_memif_data memif_data[MT7986_MEMIF_NUM] = { 198 [MT7986_MEMIF_DL1] = { 199 .name = "DL1", 200 .id = MT7986_MEMIF_DL1, 201 .reg_ofs_base = AFE_DL0_BASE, 202 .reg_ofs_cur = AFE_DL0_CUR, 203 .reg_ofs_end = AFE_DL0_END, 204 .reg_ofs_base_msb = AFE_DL0_BASE_MSB, 205 .reg_ofs_cur_msb = AFE_DL0_CUR_MSB, 206 .reg_ofs_end_msb = AFE_DL0_END_MSB, 207 .fs_reg = AFE_DL0_CON0, 208 .fs_shift = DL0_MODE_SFT, 209 .fs_maskbit = DL0_MODE_MASK, 210 .mono_reg = AFE_DL0_CON0, 211 .mono_shift = DL0_MONO_SFT, 212 .enable_reg = AFE_DL0_CON0, 213 .enable_shift = DL0_ON_SFT, 214 .hd_reg = AFE_DL0_CON0, 215 .hd_shift = DL0_HD_MODE_SFT, 216 .hd_align_reg = AFE_DL0_CON0, 217 .hd_align_mshift = DL0_HALIGN_SFT, 218 .pbuf_reg = AFE_DL0_CON0, 219 .pbuf_shift = DL0_PBUF_SIZE_SFT, 220 .minlen_reg = AFE_DL0_CON0, 221 .minlen_shift = DL0_MINLEN_SFT, 222 }, 223 [MT7986_MEMIF_VUL12] = { 224 .name = "VUL12", 225 .id = MT7986_MEMIF_VUL12, 226 .reg_ofs_base = AFE_VUL0_BASE, 227 .reg_ofs_cur = AFE_VUL0_CUR, 228 .reg_ofs_end = AFE_VUL0_END, 229 .reg_ofs_base_msb = AFE_VUL0_BASE_MSB, 230 .reg_ofs_cur_msb = AFE_VUL0_CUR_MSB, 231 .reg_ofs_end_msb = AFE_VUL0_END_MSB, 232 .fs_reg = AFE_VUL0_CON0, 233 .fs_shift = VUL0_MODE_SFT, 234 .fs_maskbit = VUL0_MODE_MASK, 235 .mono_reg = AFE_VUL0_CON0, 236 .mono_shift = VUL0_MONO_SFT, 237 .enable_reg = AFE_VUL0_CON0, 238 .enable_shift = VUL0_ON_SFT, 239 .hd_reg = AFE_VUL0_CON0, 240 .hd_shift = VUL0_HD_MODE_SFT, 241 .hd_align_reg = AFE_VUL0_CON0, 242 .hd_align_mshift = VUL0_HALIGN_SFT, 243 }, 244}; 245 246static const struct mtk_base_irq_data irq_data[MT7986_IRQ_NUM] = { 247 [MT7986_IRQ_0] = { 248 .id = MT7986_IRQ_0, 249 .irq_cnt_reg = AFE_IRQ0_MCU_CFG1, 250 .irq_cnt_shift = AFE_IRQ_CNT_SHIFT, 251 .irq_cnt_maskbit = AFE_IRQ_CNT_MASK, 252 .irq_fs_reg = AFE_IRQ0_MCU_CFG0, 253 .irq_fs_shift = IRQ_MCU_MODE_SFT, 254 .irq_fs_maskbit = IRQ_MCU_MODE_MASK, 255 .irq_en_reg = AFE_IRQ0_MCU_CFG0, 256 .irq_en_shift = IRQ_MCU_ON_SFT, 257 .irq_clr_reg = AFE_IRQ_MCU_CLR, 258 .irq_clr_shift = IRQ0_MCU_CLR_SFT, 259 }, 260 [MT7986_IRQ_1] = { 261 .id = MT7986_IRQ_1, 262 .irq_cnt_reg = AFE_IRQ1_MCU_CFG1, 263 .irq_cnt_shift = AFE_IRQ_CNT_SHIFT, 264 .irq_cnt_maskbit = AFE_IRQ_CNT_MASK, 265 .irq_fs_reg = AFE_IRQ1_MCU_CFG0, 266 .irq_fs_shift = IRQ_MCU_MODE_SFT, 267 .irq_fs_maskbit = IRQ_MCU_MODE_MASK, 268 .irq_en_reg = AFE_IRQ1_MCU_CFG0, 269 .irq_en_shift = IRQ_MCU_ON_SFT, 270 .irq_clr_reg = AFE_IRQ_MCU_CLR, 271 .irq_clr_shift = IRQ1_MCU_CLR_SFT, 272 }, 273 [MT7986_IRQ_2] = { 274 .id = MT7986_IRQ_2, 275 .irq_cnt_reg = AFE_IRQ2_MCU_CFG1, 276 .irq_cnt_shift = AFE_IRQ_CNT_SHIFT, 277 .irq_cnt_maskbit = AFE_IRQ_CNT_MASK, 278 .irq_fs_reg = AFE_IRQ2_MCU_CFG0, 279 .irq_fs_shift = IRQ_MCU_MODE_SFT, 280 .irq_fs_maskbit = IRQ_MCU_MODE_MASK, 281 .irq_en_reg = AFE_IRQ2_MCU_CFG0, 282 .irq_en_shift = IRQ_MCU_ON_SFT, 283 .irq_clr_reg = AFE_IRQ_MCU_CLR, 284 .irq_clr_shift = IRQ2_MCU_CLR_SFT, 285 }, 286}; 287 288static bool mt7986_is_volatile_reg(struct device *dev, unsigned int reg) 289{ 290 /* 291 * Those auto-gen regs are read-only, so put it as volatile because 292 * volatile registers cannot be cached, which means that they cannot 293 * be set when power is off 294 */ 295 296 switch (reg) { 297 case AFE_DL0_CUR_MSB: 298 case AFE_DL0_CUR: 299 case AFE_DL0_RCH_MON: 300 case AFE_DL0_LCH_MON: 301 case AFE_VUL0_CUR_MSB: 302 case AFE_VUL0_CUR: 303 case AFE_IRQ_MCU_STATUS: 304 case AFE_MEMIF_RD_MON: 305 case AFE_MEMIF_WR_MON: 306 return true; 307 default: 308 return false; 309 }; 310} 311 312static const struct regmap_config mt7986_afe_regmap_config = { 313 .reg_bits = 32, 314 .reg_stride = 4, 315 .val_bits = 32, 316 .volatile_reg = mt7986_is_volatile_reg, 317 .max_register = AFE_MAX_REGISTER, 318 .num_reg_defaults_raw = ((AFE_MAX_REGISTER / 4) + 1), 319}; 320 321static int mt7986_init_clock(struct mtk_base_afe *afe) 322{ 323 struct mt7986_afe_private *afe_priv = afe->platform_priv; 324 int ret, i; 325 326 afe_priv->clks = devm_kcalloc(afe->dev, CLK_NUM, 327 sizeof(*afe_priv->clks), GFP_KERNEL); 328 if (!afe_priv->clks) 329 return -ENOMEM; 330 afe_priv->num_clks = CLK_NUM; 331 332 for (i = 0; i < afe_priv->num_clks; i++) 333 afe_priv->clks[i].id = aud_clks[i]; 334 335 ret = devm_clk_bulk_get(afe->dev, afe_priv->num_clks, afe_priv->clks); 336 if (ret) 337 return dev_err_probe(afe->dev, ret, "Failed to get clocks\n"); 338 339 return 0; 340} 341 342static irqreturn_t mt7986_afe_irq_handler(int irq_id, void *dev) 343{ 344 struct mtk_base_afe *afe = dev; 345 struct mtk_base_afe_irq *irq; 346 u32 mcu_en, status, status_mcu; 347 int i, ret; 348 irqreturn_t irq_ret = IRQ_HANDLED; 349 350 /* get irq that is sent to MCU */ 351 regmap_read(afe->regmap, AFE_IRQ_MCU_EN, &mcu_en); 352 353 ret = regmap_read(afe->regmap, AFE_IRQ_MCU_STATUS, &status); 354 /* only care IRQ which is sent to MCU */ 355 status_mcu = status & mcu_en & AFE_IRQ_STATUS_BITS; 356 357 if (ret || status_mcu == 0) { 358 dev_err(afe->dev, "%s(), irq status err, ret %d, status 0x%x, mcu_en 0x%x\n", 359 __func__, ret, status, mcu_en); 360 361 irq_ret = IRQ_NONE; 362 goto err_irq; 363 } 364 365 for (i = 0; i < MT7986_MEMIF_NUM; i++) { 366 struct mtk_base_afe_memif *memif = &afe->memif[i]; 367 368 if (!memif->substream) 369 continue; 370 371 if (memif->irq_usage < 0) 372 continue; 373 374 irq = &afe->irqs[memif->irq_usage]; 375 376 if (status_mcu & (1 << irq->irq_data->irq_en_shift)) 377 snd_pcm_period_elapsed(memif->substream); 378 } 379 380err_irq: 381 /* clear irq */ 382 regmap_write(afe->regmap, AFE_IRQ_MCU_CLR, status_mcu); 383 384 return irq_ret; 385} 386 387static int mt7986_afe_runtime_suspend(struct device *dev) 388{ 389 struct mtk_base_afe *afe = dev_get_drvdata(dev); 390 struct mt7986_afe_private *afe_priv = afe->platform_priv; 391 392 if (!afe->regmap || afe_priv->pm_runtime_bypass_reg_ctl) 393 goto skip_regmap; 394 395 /* disable clk*/ 396 regmap_update_bits(afe->regmap, AUDIO_TOP_CON4, 0x3fff, 0x3fff); 397 regmap_update_bits(afe->regmap, AUDIO_ENGEN_CON0, AUD_APLL2_EN_MASK, 0); 398 regmap_update_bits(afe->regmap, AUDIO_ENGEN_CON0, AUD_26M_EN_MASK, 0); 399 400 /* make sure all irq status are cleared, twice intended */ 401 regmap_update_bits(afe->regmap, AFE_IRQ_MCU_CLR, 0xffff, 0xffff); 402 403skip_regmap: 404 clk_bulk_disable_unprepare(afe_priv->num_clks, afe_priv->clks); 405 406 return 0; 407} 408 409static int mt7986_afe_runtime_resume(struct device *dev) 410{ 411 struct mtk_base_afe *afe = dev_get_drvdata(dev); 412 struct mt7986_afe_private *afe_priv = afe->platform_priv; 413 int ret; 414 415 ret = clk_bulk_prepare_enable(afe_priv->num_clks, afe_priv->clks); 416 if (ret) 417 return dev_err_probe(afe->dev, ret, "Failed to enable clocks\n"); 418 419 if (!afe->regmap || afe_priv->pm_runtime_bypass_reg_ctl) 420 return 0; 421 422 /* enable clk*/ 423 regmap_update_bits(afe->regmap, AUDIO_TOP_CON4, 0x3fff, 0); 424 regmap_update_bits(afe->regmap, AUDIO_ENGEN_CON0, AUD_APLL2_EN_MASK, 425 AUD_APLL2_EN); 426 regmap_update_bits(afe->regmap, AUDIO_ENGEN_CON0, AUD_26M_EN_MASK, 427 AUD_26M_EN); 428 429 return 0; 430} 431 432static int mt7986_dai_memif_register(struct mtk_base_afe *afe) 433{ 434 struct mtk_base_afe_dai *dai; 435 436 dai = devm_kzalloc(afe->dev, sizeof(*dai), GFP_KERNEL); 437 if (!dai) 438 return -ENOMEM; 439 440 list_add(&dai->list, &afe->sub_dais); 441 442 dai->dai_drivers = mt7986_memif_dai_driver; 443 dai->num_dai_drivers = ARRAY_SIZE(mt7986_memif_dai_driver); 444 445 dai->dapm_widgets = mt7986_memif_widgets; 446 dai->num_dapm_widgets = ARRAY_SIZE(mt7986_memif_widgets); 447 dai->dapm_routes = mt7986_memif_routes; 448 dai->num_dapm_routes = ARRAY_SIZE(mt7986_memif_routes); 449 450 return 0; 451} 452 453typedef int (*dai_register_cb)(struct mtk_base_afe *); 454static const dai_register_cb dai_register_cbs[] = { 455 mt7986_dai_etdm_register, 456 mt7986_dai_memif_register, 457}; 458 459static int mt7986_afe_pcm_dev_probe(struct platform_device *pdev) 460{ 461 struct mtk_base_afe *afe; 462 struct mt7986_afe_private *afe_priv; 463 struct device *dev; 464 int i, irq_id, ret; 465 466 afe = devm_kzalloc(&pdev->dev, sizeof(*afe), GFP_KERNEL); 467 if (!afe) 468 return -ENOMEM; 469 platform_set_drvdata(pdev, afe); 470 471 afe->platform_priv = devm_kzalloc(&pdev->dev, sizeof(*afe_priv), 472 GFP_KERNEL); 473 if (!afe->platform_priv) 474 return -ENOMEM; 475 476 afe_priv = afe->platform_priv; 477 afe->dev = &pdev->dev; 478 dev = afe->dev; 479 480 afe->base_addr = devm_platform_ioremap_resource(pdev, 0); 481 if (IS_ERR(afe->base_addr)) 482 return PTR_ERR(afe->base_addr); 483 484 /* initial audio related clock */ 485 ret = mt7986_init_clock(afe); 486 if (ret) 487 return dev_err_probe(dev, ret, "Cannot initialize clocks\n"); 488 489 ret = devm_pm_runtime_enable(dev); 490 if (ret) 491 return ret; 492 493 /* enable clock for regcache get default value from hw */ 494 afe_priv->pm_runtime_bypass_reg_ctl = true; 495 pm_runtime_get_sync(&pdev->dev); 496 497 afe->regmap = devm_regmap_init_mmio(&pdev->dev, afe->base_addr, 498 &mt7986_afe_regmap_config); 499 500 pm_runtime_put_sync(&pdev->dev); 501 if (IS_ERR(afe->regmap)) 502 return PTR_ERR(afe->regmap); 503 504 afe_priv->pm_runtime_bypass_reg_ctl = false; 505 506 /* init memif */ 507 afe->memif_size = MT7986_MEMIF_NUM; 508 afe->memif = devm_kcalloc(dev, afe->memif_size, sizeof(*afe->memif), 509 GFP_KERNEL); 510 if (!afe->memif) 511 return -ENOMEM; 512 513 for (i = 0; i < afe->memif_size; i++) { 514 afe->memif[i].data = &memif_data[i]; 515 afe->memif[i].irq_usage = -1; 516 } 517 518 mutex_init(&afe->irq_alloc_lock); 519 520 /* irq initialize */ 521 afe->irqs_size = MT7986_IRQ_NUM; 522 afe->irqs = devm_kcalloc(dev, afe->irqs_size, sizeof(*afe->irqs), 523 GFP_KERNEL); 524 if (!afe->irqs) 525 return -ENOMEM; 526 527 for (i = 0; i < afe->irqs_size; i++) 528 afe->irqs[i].irq_data = &irq_data[i]; 529 530 /* request irq */ 531 irq_id = platform_get_irq(pdev, 0); 532 if (irq_id < 0) { 533 ret = irq_id; 534 return dev_err_probe(dev, ret, "No irq found\n"); 535 } 536 ret = devm_request_irq(dev, irq_id, mt7986_afe_irq_handler, 537 IRQF_TRIGGER_NONE, "asys-isr", (void *)afe); 538 if (ret) 539 return dev_err_probe(dev, ret, "Failed to request irq for asys-isr\n"); 540 541 /* init sub_dais */ 542 INIT_LIST_HEAD(&afe->sub_dais); 543 544 for (i = 0; i < ARRAY_SIZE(dai_register_cbs); i++) { 545 ret = dai_register_cbs[i](afe); 546 if (ret) 547 return dev_err_probe(dev, ret, "DAI register failed, i: %d\n", i); 548 } 549 550 /* init dai_driver and component_driver */ 551 ret = mtk_afe_combine_sub_dai(afe); 552 if (ret) 553 return dev_err_probe(dev, ret, "mtk_afe_combine_sub_dai fail\n"); 554 555 afe->mtk_afe_hardware = &mt7986_afe_hardware; 556 afe->memif_fs = mt7986_memif_fs; 557 afe->irq_fs = mt7986_irq_fs; 558 559 afe->runtime_resume = mt7986_afe_runtime_resume; 560 afe->runtime_suspend = mt7986_afe_runtime_suspend; 561 562 /* register component */ 563 ret = devm_snd_soc_register_component(&pdev->dev, 564 &mtk_afe_pcm_platform, 565 NULL, 0); 566 if (ret) 567 return dev_err_probe(dev, ret, "Cannot register AFE component\n"); 568 569 ret = devm_snd_soc_register_component(afe->dev, 570 &mt7986_afe_pcm_dai_component, 571 afe->dai_drivers, 572 afe->num_dai_drivers); 573 if (ret) 574 return dev_err_probe(dev, ret, "Cannot register PCM DAI component\n"); 575 576 return 0; 577} 578 579static void mt7986_afe_pcm_dev_remove(struct platform_device *pdev) 580{ 581 pm_runtime_disable(&pdev->dev); 582 if (!pm_runtime_status_suspended(&pdev->dev)) 583 mt7986_afe_runtime_suspend(&pdev->dev); 584} 585 586static const struct of_device_id mt7986_afe_pcm_dt_match[] = { 587 { .compatible = "mediatek,mt7986-afe" }, 588 { /* sentinel */ } 589}; 590MODULE_DEVICE_TABLE(of, mt7986_afe_pcm_dt_match); 591 592static const struct dev_pm_ops mt7986_afe_pm_ops = { 593 SET_RUNTIME_PM_OPS(mt7986_afe_runtime_suspend, 594 mt7986_afe_runtime_resume, NULL) 595}; 596 597static struct platform_driver mt7986_afe_pcm_driver = { 598 .driver = { 599 .name = "mt7986-audio", 600 .of_match_table = mt7986_afe_pcm_dt_match, 601 .pm = &mt7986_afe_pm_ops, 602 }, 603 .probe = mt7986_afe_pcm_dev_probe, 604 .remove_new = mt7986_afe_pcm_dev_remove, 605}; 606module_platform_driver(mt7986_afe_pcm_driver); 607 608MODULE_DESCRIPTION("MediaTek SoC AFE platform driver for ALSA MT7986"); 609MODULE_AUTHOR("Vic Wu <vic.wu@mediatek.com>"); 610MODULE_LICENSE("GPL"); 611