sound/soc/mediatek/common/mtk-afe-fe-dai.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * mtk-afe-fe-dais.c  --  Mediatek afe fe dai operator
   4  *
   5  * Copyright (c) 2016 MediaTek Inc.
   6  * Author: Garlic Tseng <garlic.tseng@mediatek.com>
   7  */
   8
   9 #include <linux/io.h>
  10 #include <linux/module.h>
  11 #include <linux/pm_runtime.h>
  12 #include <linux/regmap.h>
  13 #include <sound/soc.h>
  14 #include "mtk-afe-platform-driver.h"
  15 #include <sound/pcm_params.h>
  16 #include "mtk-afe-fe-dai.h"
  17 #include "mtk-base-afe.h"
  18
  19 #define AFE_BASE_END_OFFSET 8
  20
  21 static int mtk_regmap_update_bits(struct regmap *map, int reg,
  22                            unsigned int mask,
  23                            unsigned int val, int shift)
  24 {
  25         if (reg < 0 || WARN_ON_ONCE(shift < 0))
  26                 return 0;
  27         return regmap_update_bits(map, reg, mask << shift, val << shift);
  28 }
  29
  30 static int mtk_regmap_write(struct regmap *map, int reg, unsigned int val)
  31 {
  32         if (reg < 0)
  33                 return 0;
  34         return regmap_write(map, reg, val);
  35 }
  36
  37 int mtk_afe_fe_startup(struct snd_pcm_substream *substream,
  38                        struct snd_soc_dai *dai)
  39 {
  40         struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
  41         struct mtk_base_afe *afe = snd_soc_dai_get_drvdata(dai);
  42         struct snd_pcm_runtime *runtime = substream->runtime;
  43         int memif_num = asoc_rtd_to_cpu(rtd, 0)->id;
  44         struct mtk_base_afe_memif *memif = &afe->memif[memif_num];
  45         const struct snd_pcm_hardware *mtk_afe_hardware = afe->mtk_afe_hardware;
  46         int ret;
  47
  48         memif->substream = substream;
  49
  50         snd_pcm_hw_constraint_step(substream->runtime, 0,
  51                                    SNDRV_PCM_HW_PARAM_BUFFER_BYTES, 16);
  52         /* enable agent */
  53         mtk_regmap_update_bits(afe->regmap, memif->data->agent_disable_reg,
  54                                1, 0, memif->data->agent_disable_shift);
  55
  56         snd_soc_set_runtime_hwparams(substream, mtk_afe_hardware);
  57
  58         /*
  59          * Capture cannot use ping-pong buffer since hw_ptr at IRQ may be
  60          * smaller than period_size due to AFE's internal buffer.
  61          * This easily leads to overrun when avail_min is period_size.
  62          * One more period can hold the possible unread buffer.
  63          */
  64         if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) {
  65                 int periods_max = mtk_afe_hardware->periods_max;
  66
  67                 ret = snd_pcm_hw_constraint_minmax(runtime,
  68                                                    SNDRV_PCM_HW_PARAM_PERIODS,
  69                                                    3, periods_max);
  70                 if (ret < 0) {
  71                         dev_err(afe->dev, "hw_constraint_minmax failed\n");
  72                         return ret;
  73                 }
  74         }
  75
  76         ret = snd_pcm_hw_constraint_integer(runtime,
  77                                             SNDRV_PCM_HW_PARAM_PERIODS);
  78         if (ret < 0)
  79                 dev_err(afe->dev, "snd_pcm_hw_constraint_integer failed\n");
  80
  81         /* dynamic allocate irq to memif */
  82         if (memif->irq_usage < 0) {
  83                 int irq_id = mtk_dynamic_irq_acquire(afe);
  84
  85                 if (irq_id != afe->irqs_size) {
  86                         /* link */
  87                         memif->irq_usage = irq_id;
  88                 } else {
  89                         dev_err(afe->dev, "%s() error: no more asys irq\n",
  90                                 __func__);
  91                         ret = -EBUSY;
  92                 }
  93         }
  94         return ret;
  95 }
  96 EXPORT_SYMBOL_GPL(mtk_afe_fe_startup);
  97
  98 void mtk_afe_fe_shutdown(struct snd_pcm_substream *substream,
  99                          struct snd_soc_dai *dai)
 100 {
 101         struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
 102         struct mtk_base_afe *afe = snd_soc_dai_get_drvdata(dai);
 103         struct mtk_base_afe_memif *memif = &afe->memif[asoc_rtd_to_cpu(rtd, 0)->id];
 104         int irq_id;
 105
 106         irq_id = memif->irq_usage;
 107
 108         mtk_regmap_update_bits(afe->regmap, memif->data->agent_disable_reg,
 109                                1, 1, memif->data->agent_disable_shift);
 110
 111         if (!memif->const_irq) {
 112                 mtk_dynamic_irq_release(afe, irq_id);
 113                 memif->irq_usage = -1;
 114                 memif->substream = NULL;
 115         }
 116 }
 117 EXPORT_SYMBOL_GPL(mtk_afe_fe_shutdown);
 118
 119 int mtk_afe_fe_hw_params(struct snd_pcm_substream *substream,
 120                          struct snd_pcm_hw_params *params,
 121                          struct snd_soc_dai *dai)
 122 {
 123         struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
 124         struct mtk_base_afe *afe = snd_soc_dai_get_drvdata(dai);
 125         int id = asoc_rtd_to_cpu(rtd, 0)->id;
 126         struct mtk_base_afe_memif *memif = &afe->memif[id];
 127         int ret;
 128         unsigned int channels = params_channels(params);
 129         unsigned int rate = params_rate(params);
 130         snd_pcm_format_t format = params_format(params);
 131
 132         if (afe->request_dram_resource)
 133                 afe->request_dram_resource(afe->dev);
 134
 135         dev_dbg(afe->dev, "%s(), %s, ch %d, rate %d, fmt %d, dma_addr %pad, dma_area %p, dma_bytes 0x%zx\n",
 136                 __func__, memif->data->name,
 137                 channels, rate, format,
 138                 &substream->runtime->dma_addr,
 139                 substream->runtime->dma_area,
 140                 substream->runtime->dma_bytes);
 141
 142         memset_io(substream->runtime->dma_area, 0,
 143                   substream->runtime->dma_bytes);
 144
 145         /* set addr */
 146         ret = mtk_memif_set_addr(afe, id,
 147                                  substream->runtime->dma_area,
 148                                  substream->runtime->dma_addr,
 149                                  substream->runtime->dma_bytes);
 150         if (ret) {
 151                 dev_err(afe->dev, "%s(), error, id %d, set addr, ret %d\n",
 152                         __func__, id, ret);
 153                 return ret;
 154         }
 155
 156         /* set channel */
 157         ret = mtk_memif_set_channel(afe, id, channels);
 158         if (ret) {
 159                 dev_err(afe->dev, "%s(), error, id %d, set channel %d, ret %d\n",
 160                         __func__, id, channels, ret);
 161                 return ret;
 162         }
 163
 164         /* set rate */
 165         ret = mtk_memif_set_rate_substream(substream, id, rate);
 166         if (ret) {
 167                 dev_err(afe->dev, "%s(), error, id %d, set rate %d, ret %d\n",
 168                         __func__, id, rate, ret);
 169                 return ret;
 170         }
 171
 172         /* set format */
 173         ret = mtk_memif_set_format(afe, id, format);
 174         if (ret) {
 175                 dev_err(afe->dev, "%s(), error, id %d, set format %d, ret %d\n",
 176                         __func__, id, format, ret);
 177                 return ret;
 178         }
 179
 180         return 0;
 181 }
 182 EXPORT_SYMBOL_GPL(mtk_afe_fe_hw_params);
 183
 184 int mtk_afe_fe_hw_free(struct snd_pcm_substream *substream,
 185                        struct snd_soc_dai *dai)
 186 {
 187         struct mtk_base_afe *afe = snd_soc_dai_get_drvdata(dai);
 188
 189         if (afe->release_dram_resource)
 190                 afe->release_dram_resource(afe->dev);
 191
 192         return 0;
 193 }
 194 EXPORT_SYMBOL_GPL(mtk_afe_fe_hw_free);
 195
 196 int mtk_afe_fe_trigger(struct snd_pcm_substream *substream, int cmd,
 197                        struct snd_soc_dai *dai)
 198 {
 199         struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
 200         struct snd_pcm_runtime * const runtime = substream->runtime;
 201         struct mtk_base_afe *afe = snd_soc_dai_get_drvdata(dai);
 202         int id = asoc_rtd_to_cpu(rtd, 0)->id;
 203         struct mtk_base_afe_memif *memif = &afe->memif[id];
 204         struct mtk_base_afe_irq *irqs = &afe->irqs[memif->irq_usage];
 205         const struct mtk_base_irq_data *irq_data = irqs->irq_data;
 206         unsigned int counter = runtime->period_size;
 207         int fs;
 208         int ret;
 209
 210         dev_dbg(afe->dev, "%s %s cmd=%d\n", __func__, memif->data->name, cmd);
 211
 212         switch (cmd) {
 213         case SNDRV_PCM_TRIGGER_START:
 214         case SNDRV_PCM_TRIGGER_RESUME:
 215                 ret = mtk_memif_set_enable(afe, id);
 216                 if (ret) {
 217                         dev_err(afe->dev, "%s(), error, id %d, memif enable, ret %d\n",
 218                                 __func__, id, ret);
 219                         return ret;
 220                 }
 221
 222                 /* set irq counter */
 223                 mtk_regmap_update_bits(afe->regmap, irq_data->irq_cnt_reg,
 224                                        irq_data->irq_cnt_maskbit, counter,
 225                                        irq_data->irq_cnt_shift);
 226
 227                 /* set irq fs */
 228                 fs = afe->irq_fs(substream, runtime->rate);
 229
 230                 if (fs < 0)
 231                         return -EINVAL;
 232
 233                 mtk_regmap_update_bits(afe->regmap, irq_data->irq_fs_reg,
 234                                        irq_data->irq_fs_maskbit, fs,
 235                                        irq_data->irq_fs_shift);
 236
 237                 /* enable interrupt */
 238                 mtk_regmap_update_bits(afe->regmap, irq_data->irq_en_reg,
 239                                        1, 1, irq_data->irq_en_shift);
 240
 241                 return 0;
 242         case SNDRV_PCM_TRIGGER_STOP:
 243         case SNDRV_PCM_TRIGGER_SUSPEND:
 244                 ret = mtk_memif_set_disable(afe, id);
 245                 if (ret) {
 246                         dev_err(afe->dev, "%s(), error, id %d, memif enable, ret %d\n",
 247                                 __func__, id, ret);
 248                 }
 249
 250                 /* disable interrupt */
 251                 mtk_regmap_update_bits(afe->regmap, irq_data->irq_en_reg,
 252                                        1, 0, irq_data->irq_en_shift);
 253                 /* and clear pending IRQ */
 254                 mtk_regmap_write(afe->regmap, irq_data->irq_clr_reg,
 255                                  1 << irq_data->irq_clr_shift);
 256                 return ret;
 257         default:
 258                 return -EINVAL;
 259         }
 260 }
 261 EXPORT_SYMBOL_GPL(mtk_afe_fe_trigger);
 262
 263 int mtk_afe_fe_prepare(struct snd_pcm_substream *substream,
 264                        struct snd_soc_dai *dai)
 265 {
 266         struct snd_soc_pcm_runtime *rtd  = asoc_substream_to_rtd(substream);
 267         struct mtk_base_afe *afe = snd_soc_dai_get_drvdata(dai);
 268         int id = asoc_rtd_to_cpu(rtd, 0)->id;
 269         int pbuf_size;
 270
 271         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
 272                 if (afe->get_memif_pbuf_size) {
 273                         pbuf_size = afe->get_memif_pbuf_size(substream);
 274                         mtk_memif_set_pbuf_size(afe, id, pbuf_size);
 275                 }
 276         }
 277         return 0;
 278 }
 279 EXPORT_SYMBOL_GPL(mtk_afe_fe_prepare);
 280
 281 const struct snd_soc_dai_ops mtk_afe_fe_ops = {
 282         .startup        = mtk_afe_fe_startup,
 283         .shutdown       = mtk_afe_fe_shutdown,
 284         .hw_params      = mtk_afe_fe_hw_params,
 285         .hw_free        = mtk_afe_fe_hw_free,
 286         .prepare        = mtk_afe_fe_prepare,
 287         .trigger        = mtk_afe_fe_trigger,
 288 };
 289 EXPORT_SYMBOL_GPL(mtk_afe_fe_ops);
 290
 291 static DEFINE_MUTEX(irqs_lock);
 292 int mtk_dynamic_irq_acquire(struct mtk_base_afe *afe)
 293 {
 294         int i;
 295
 296         mutex_lock(&afe->irq_alloc_lock);
 297         for (i = 0; i < afe->irqs_size; ++i) {
 298                 if (afe->irqs[i].irq_occupyed == 0) {
 299                         afe->irqs[i].irq_occupyed = 1;
 300                         mutex_unlock(&afe->irq_alloc_lock);
 301                         return i;
 302                 }
 303         }
 304         mutex_unlock(&afe->irq_alloc_lock);
 305         return afe->irqs_size;
 306 }
 307 EXPORT_SYMBOL_GPL(mtk_dynamic_irq_acquire);
 308
 309 int mtk_dynamic_irq_release(struct mtk_base_afe *afe, int irq_id)
 310 {
 311         mutex_lock(&afe->irq_alloc_lock);
 312         if (irq_id >= 0 && irq_id < afe->irqs_size) {
 313                 afe->irqs[irq_id].irq_occupyed = 0;
 314                 mutex_unlock(&afe->irq_alloc_lock);
 315                 return 0;
 316         }
 317         mutex_unlock(&afe->irq_alloc_lock);
 318         return -EINVAL;
 319 }
 320 EXPORT_SYMBOL_GPL(mtk_dynamic_irq_release);
 321
 322 int mtk_afe_suspend(struct snd_soc_component *component)
 323 {
 324         struct mtk_base_afe *afe = snd_soc_component_get_drvdata(component);
 325         struct device *dev = afe->dev;
 326         struct regmap *regmap = afe->regmap;
 327         int i;
 328
 329         if (pm_runtime_status_suspended(dev) || afe->suspended)
 330                 return 0;
 331
 332         if (!afe->reg_back_up)
 333                 afe->reg_back_up =
 334                         devm_kcalloc(dev, afe->reg_back_up_list_num,
 335                                      sizeof(unsigned int), GFP_KERNEL);
 336
 337         for (i = 0; i < afe->reg_back_up_list_num; i++)
 338                 regmap_read(regmap, afe->reg_back_up_list[i],
 339                             &afe->reg_back_up[i]);
 340
 341         afe->suspended = true;
 342         afe->runtime_suspend(dev);
 343         return 0;
 344 }
 345 EXPORT_SYMBOL_GPL(mtk_afe_suspend);
 346
 347 int mtk_afe_resume(struct snd_soc_component *component)
 348 {
 349         struct mtk_base_afe *afe = snd_soc_component_get_drvdata(component);
 350         struct device *dev = afe->dev;
 351         struct regmap *regmap = afe->regmap;
 352         int i = 0;
 353
 354         if (pm_runtime_status_suspended(dev) || !afe->suspended)
 355                 return 0;
 356
 357         afe->runtime_resume(dev);
 358
 359         if (!afe->reg_back_up)
 360                 dev_dbg(dev, "%s no reg_backup\n", __func__);
 361
 362         for (i = 0; i < afe->reg_back_up_list_num; i++)
 363                 mtk_regmap_write(regmap, afe->reg_back_up_list[i],
 364                                  afe->reg_back_up[i]);
 365
 366         afe->suspended = false;
 367         return 0;
 368 }
 369 EXPORT_SYMBOL_GPL(mtk_afe_resume);
 370
 371 int mtk_memif_set_enable(struct mtk_base_afe *afe, int id)
 372 {
 373         struct mtk_base_afe_memif *memif = &afe->memif[id];
 374
 375         if (memif->data->enable_shift < 0) {
 376                 dev_warn(afe->dev, "%s(), error, id %d, enable_shift < 0\n",
 377                          __func__, id);
 378                 return 0;
 379         }
 380         return mtk_regmap_update_bits(afe->regmap, memif->data->enable_reg,
 381                                       1, 1, memif->data->enable_shift);
 382 }
 383 EXPORT_SYMBOL_GPL(mtk_memif_set_enable);
 384
 385 int mtk_memif_set_disable(struct mtk_base_afe *afe, int id)
 386 {
 387         struct mtk_base_afe_memif *memif = &afe->memif[id];
 388
 389         if (memif->data->enable_shift < 0) {
 390                 dev_warn(afe->dev, "%s(), error, id %d, enable_shift < 0\n",
 391                          __func__, id);
 392                 return 0;
 393         }
 394         return mtk_regmap_update_bits(afe->regmap, memif->data->enable_reg,
 395                                       1, 0, memif->data->enable_shift);
 396 }
 397 EXPORT_SYMBOL_GPL(mtk_memif_set_disable);
 398
 399 int mtk_memif_set_addr(struct mtk_base_afe *afe, int id,
 400                        unsigned char *dma_area,
 401                        dma_addr_t dma_addr,
 402                        size_t dma_bytes)
 403 {
 404         struct mtk_base_afe_memif *memif = &afe->memif[id];
 405         int msb_at_bit33 = upper_32_bits(dma_addr) ? 1 : 0;
 406         unsigned int phys_buf_addr = lower_32_bits(dma_addr);
 407         unsigned int phys_buf_addr_upper_32 = upper_32_bits(dma_addr);
 408
 409         memif->dma_area = dma_area;
 410         memif->dma_addr = dma_addr;
 411         memif->dma_bytes = dma_bytes;
 412
 413         /* start */
 414         mtk_regmap_write(afe->regmap, memif->data->reg_ofs_base,
 415                          phys_buf_addr);
 416         /* end */
 417         if (memif->data->reg_ofs_end)
 418                 mtk_regmap_write(afe->regmap,
 419                                  memif->data->reg_ofs_end,
 420                                  phys_buf_addr + dma_bytes - 1);
 421         else
 422                 mtk_regmap_write(afe->regmap,
 423                                  memif->data->reg_ofs_base +
 424                                  AFE_BASE_END_OFFSET,
 425                                  phys_buf_addr + dma_bytes - 1);
 426
 427         /* set start, end, upper 32 bits */
 428         if (memif->data->reg_ofs_base_msb) {
 429                 mtk_regmap_write(afe->regmap, memif->data->reg_ofs_base_msb,
 430                                  phys_buf_addr_upper_32);
 431                 mtk_regmap_write(afe->regmap,
 432                                  memif->data->reg_ofs_end_msb,
 433                                  phys_buf_addr_upper_32);
 434         }
 435
 436         /* set MSB to 33-bit */
 437         if (memif->data->msb_reg >= 0)
 438                 mtk_regmap_update_bits(afe->regmap, memif->data->msb_reg,
 439                                        1, msb_at_bit33, memif->data->msb_shift);
 440
 441         return 0;
 442 }
 443 EXPORT_SYMBOL_GPL(mtk_memif_set_addr);
 444
 445 int mtk_memif_set_channel(struct mtk_base_afe *afe,
 446                           int id, unsigned int channel)
 447 {
 448         struct mtk_base_afe_memif *memif = &afe->memif[id];
 449         unsigned int mono;
 450
 451         if (memif->data->mono_shift < 0)
 452                 return 0;
 453
 454         if (memif->data->quad_ch_mask) {
 455                 unsigned int quad_ch = (channel == 4) ? 1 : 0;
 456
 457                 mtk_regmap_update_bits(afe->regmap, memif->data->quad_ch_reg,
 458                                        memif->data->quad_ch_mask,
 459                                        quad_ch, memif->data->quad_ch_shift);
 460         }
 461
 462         if (memif->data->mono_invert)
 463                 mono = (channel == 1) ? 0 : 1;
 464         else
 465                 mono = (channel == 1) ? 1 : 0;
 466
 467         return mtk_regmap_update_bits(afe->regmap, memif->data->mono_reg,
 468                                       1, mono, memif->data->mono_shift);
 469 }
 470 EXPORT_SYMBOL_GPL(mtk_memif_set_channel);
 471
 472 static int mtk_memif_set_rate_fs(struct mtk_base_afe *afe,
 473                                  int id, int fs)
 474 {
 475         struct mtk_base_afe_memif *memif = &afe->memif[id];
 476
 477         if (memif->data->fs_shift >= 0)
 478                 mtk_regmap_update_bits(afe->regmap, memif->data->fs_reg,
 479                                        memif->data->fs_maskbit,
 480                                        fs, memif->data->fs_shift);
 481
 482         return 0;
 483 }
 484
 485 int mtk_memif_set_rate(struct mtk_base_afe *afe,
 486                        int id, unsigned int rate)
 487 {
 488         int fs = 0;
 489
 490         if (!afe->get_dai_fs) {
 491                 dev_err(afe->dev, "%s(), error, afe->get_dai_fs == NULL\n",
 492                         __func__);
 493                 return -EINVAL;
 494         }
 495
 496         fs = afe->get_dai_fs(afe, id, rate);
 497
 498         if (fs < 0)
 499                 return -EINVAL;
 500
 501         return mtk_memif_set_rate_fs(afe, id, fs);
 502 }
 503 EXPORT_SYMBOL_GPL(mtk_memif_set_rate);
 504
 505 int mtk_memif_set_rate_substream(struct snd_pcm_substream *substream,
 506                                  int id, unsigned int rate)
 507 {
 508         struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
 509         struct snd_soc_component *component =
 510                 snd_soc_rtdcom_lookup(rtd, AFE_PCM_NAME);
 511         struct mtk_base_afe *afe = snd_soc_component_get_drvdata(component);
 512
 513         int fs = 0;
 514
 515         if (!afe->memif_fs) {
 516                 dev_err(afe->dev, "%s(), error, afe->memif_fs == NULL\n",
 517                         __func__);
 518                 return -EINVAL;
 519         }
 520
 521         fs = afe->memif_fs(substream, rate);
 522
 523         if (fs < 0)
 524                 return -EINVAL;
 525
 526         return mtk_memif_set_rate_fs(afe, id, fs);
 527 }
 528 EXPORT_SYMBOL_GPL(mtk_memif_set_rate_substream);
 529
 530 int mtk_memif_set_format(struct mtk_base_afe *afe,
 531                          int id, snd_pcm_format_t format)
 532 {
 533         struct mtk_base_afe_memif *memif = &afe->memif[id];
 534         int hd_audio = 0;
 535         int hd_align = 0;
 536
 537         /* set hd mode */
 538         switch (format) {
 539         case SNDRV_PCM_FORMAT_S16_LE:
 540         case SNDRV_PCM_FORMAT_U16_LE:
 541                 hd_audio = 0;
 542                 break;
 543         case SNDRV_PCM_FORMAT_S32_LE:
 544         case SNDRV_PCM_FORMAT_U32_LE:
 545                 if (afe->memif_32bit_supported) {
 546                         hd_audio = 2;
 547                         hd_align = 0;
 548                 } else {
 549                         hd_audio = 1;
 550                         hd_align = 1;
 551                 }
 552                 break;
 553         case SNDRV_PCM_FORMAT_S24_LE:
 554         case SNDRV_PCM_FORMAT_U24_LE:
 555                 hd_audio = 1;
 556                 break;
 557         default:
 558                 dev_err(afe->dev, "%s() error: unsupported format %d\n",
 559                         __func__, format);
 560                 break;
 561         }
 562
 563         mtk_regmap_update_bits(afe->regmap, memif->data->hd_reg,
 564                                0x3, hd_audio, memif->data->hd_shift);
 565
 566         mtk_regmap_update_bits(afe->regmap, memif->data->hd_align_reg,
 567                                0x1, hd_align, memif->data->hd_align_mshift);
 568
 569         return 0;
 570 }
 571 EXPORT_SYMBOL_GPL(mtk_memif_set_format);
 572
 573 int mtk_memif_set_pbuf_size(struct mtk_base_afe *afe,
 574                             int id, int pbuf_size)
 575 {
 576         const struct mtk_base_memif_data *memif_data = afe->memif[id].data;
 577
 578         if (memif_data->pbuf_mask == 0 || memif_data->minlen_mask == 0)
 579                 return 0;
 580
 581         mtk_regmap_update_bits(afe->regmap, memif_data->pbuf_reg,
 582                                memif_data->pbuf_mask,
 583                                pbuf_size, memif_data->pbuf_shift);
 584
 585         mtk_regmap_update_bits(afe->regmap, memif_data->minlen_reg,
 586                                memif_data->minlen_mask,
 587                                pbuf_size, memif_data->minlen_shift);
 588         return 0;
 589 }
 590 EXPORT_SYMBOL_GPL(mtk_memif_set_pbuf_size);
 591
 592 MODULE_DESCRIPTION("Mediatek simple fe dai operator");
 593 MODULE_AUTHOR("Garlic Tseng <garlic.tseng@mediatek.com>");
 594 MODULE_LICENSE("GPL v2");