1283b6124SGarlic Tseng /* 2283b6124SGarlic Tseng * mtk-afe-fe-dais.c -- Mediatek afe fe dai operator 3283b6124SGarlic Tseng * 4283b6124SGarlic Tseng * Copyright (c) 2016 MediaTek Inc. 5283b6124SGarlic Tseng * Author: Garlic Tseng <garlic.tseng@mediatek.com> 6283b6124SGarlic Tseng * 7283b6124SGarlic Tseng * This program is free software; you can redistribute it and/or modify 8283b6124SGarlic Tseng * it under the terms of the GNU General Public License version 2 and 9283b6124SGarlic Tseng * only version 2 as published by the Free Software Foundation. 10283b6124SGarlic Tseng * 11283b6124SGarlic Tseng * This program is distributed in the hope that it will be useful, 12283b6124SGarlic Tseng * but WITHOUT ANY WARRANTY; without even the implied warranty of 13283b6124SGarlic Tseng * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14283b6124SGarlic Tseng * GNU General Public License for more details. 15283b6124SGarlic Tseng */ 16283b6124SGarlic Tseng 17283b6124SGarlic Tseng #include <linux/module.h> 18283b6124SGarlic Tseng #include <linux/pm_runtime.h> 19283b6124SGarlic Tseng #include <linux/regmap.h> 20283b6124SGarlic Tseng #include <sound/soc.h> 21283b6124SGarlic Tseng #include "mtk-afe-fe-dai.h" 22283b6124SGarlic Tseng #include "mtk-base-afe.h" 23283b6124SGarlic Tseng 24283b6124SGarlic Tseng #define AFE_BASE_END_OFFSET 8 25283b6124SGarlic Tseng 26283b6124SGarlic Tseng int mtk_regmap_update_bits(struct regmap *map, int reg, unsigned int mask, 27283b6124SGarlic Tseng unsigned int val) 28283b6124SGarlic Tseng { 29283b6124SGarlic Tseng if (reg < 0) 30283b6124SGarlic Tseng return 0; 31283b6124SGarlic Tseng return regmap_update_bits(map, reg, mask, val); 32283b6124SGarlic Tseng } 33283b6124SGarlic Tseng 34283b6124SGarlic Tseng int mtk_regmap_write(struct regmap *map, int reg, unsigned int val) 35283b6124SGarlic Tseng { 36283b6124SGarlic Tseng if (reg < 0) 37283b6124SGarlic Tseng return 0; 38283b6124SGarlic Tseng return regmap_write(map, reg, val); 39283b6124SGarlic Tseng } 40283b6124SGarlic Tseng 41283b6124SGarlic Tseng int mtk_afe_fe_startup(struct snd_pcm_substream *substream, 42283b6124SGarlic Tseng struct snd_soc_dai *dai) 43283b6124SGarlic Tseng { 44283b6124SGarlic Tseng struct snd_soc_pcm_runtime *rtd = substream->private_data; 45283b6124SGarlic Tseng struct mtk_base_afe *afe = snd_soc_platform_get_drvdata(rtd->platform); 46283b6124SGarlic Tseng struct snd_pcm_runtime *runtime = substream->runtime; 47283b6124SGarlic Tseng int memif_num = rtd->cpu_dai->id; 48283b6124SGarlic Tseng struct mtk_base_afe_memif *memif = &afe->memif[memif_num]; 49283b6124SGarlic Tseng const struct snd_pcm_hardware *mtk_afe_hardware = afe->mtk_afe_hardware; 50283b6124SGarlic Tseng int ret; 51283b6124SGarlic Tseng 52283b6124SGarlic Tseng memif->substream = substream; 53283b6124SGarlic Tseng 54283b6124SGarlic Tseng snd_pcm_hw_constraint_step(substream->runtime, 0, 55283b6124SGarlic Tseng SNDRV_PCM_HW_PARAM_BUFFER_BYTES, 16); 56283b6124SGarlic Tseng /* enable agent */ 57283b6124SGarlic Tseng mtk_regmap_update_bits(afe->regmap, memif->data->agent_disable_reg, 58283b6124SGarlic Tseng 1 << memif->data->agent_disable_shift, 59283b6124SGarlic Tseng 0 << memif->data->agent_disable_shift); 60283b6124SGarlic Tseng 61283b6124SGarlic Tseng snd_soc_set_runtime_hwparams(substream, mtk_afe_hardware); 62283b6124SGarlic Tseng 63283b6124SGarlic Tseng /* 64283b6124SGarlic Tseng * Capture cannot use ping-pong buffer since hw_ptr at IRQ may be 65283b6124SGarlic Tseng * smaller than period_size due to AFE's internal buffer. 66283b6124SGarlic Tseng * This easily leads to overrun when avail_min is period_size. 67283b6124SGarlic Tseng * One more period can hold the possible unread buffer. 68283b6124SGarlic Tseng */ 69283b6124SGarlic Tseng if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) { 70283b6124SGarlic Tseng int periods_max = mtk_afe_hardware->periods_max; 71283b6124SGarlic Tseng 72283b6124SGarlic Tseng ret = snd_pcm_hw_constraint_minmax(runtime, 73283b6124SGarlic Tseng SNDRV_PCM_HW_PARAM_PERIODS, 74283b6124SGarlic Tseng 3, periods_max); 75283b6124SGarlic Tseng if (ret < 0) { 76283b6124SGarlic Tseng dev_err(afe->dev, "hw_constraint_minmax failed\n"); 77283b6124SGarlic Tseng return ret; 78283b6124SGarlic Tseng } 79283b6124SGarlic Tseng } 80283b6124SGarlic Tseng 81283b6124SGarlic Tseng ret = snd_pcm_hw_constraint_integer(runtime, 82283b6124SGarlic Tseng SNDRV_PCM_HW_PARAM_PERIODS); 83283b6124SGarlic Tseng if (ret < 0) 84283b6124SGarlic Tseng dev_err(afe->dev, "snd_pcm_hw_constraint_integer failed\n"); 85283b6124SGarlic Tseng 86283b6124SGarlic Tseng /* dynamic allocate irq to memif */ 87283b6124SGarlic Tseng if (memif->irq_usage < 0) { 88283b6124SGarlic Tseng int irq_id = mtk_dynamic_irq_acquire(afe); 89283b6124SGarlic Tseng 90283b6124SGarlic Tseng if (irq_id != afe->irqs_size) { 91283b6124SGarlic Tseng /* link */ 92283b6124SGarlic Tseng memif->irq_usage = irq_id; 93283b6124SGarlic Tseng } else { 94283b6124SGarlic Tseng dev_err(afe->dev, "%s() error: no more asys irq\n", 95283b6124SGarlic Tseng __func__); 96283b6124SGarlic Tseng ret = -EBUSY; 97283b6124SGarlic Tseng } 98283b6124SGarlic Tseng } 99283b6124SGarlic Tseng return ret; 100283b6124SGarlic Tseng } 101283b6124SGarlic Tseng EXPORT_SYMBOL_GPL(mtk_afe_fe_startup); 102283b6124SGarlic Tseng 103283b6124SGarlic Tseng void mtk_afe_fe_shutdown(struct snd_pcm_substream *substream, 104283b6124SGarlic Tseng struct snd_soc_dai *dai) 105283b6124SGarlic Tseng { 106283b6124SGarlic Tseng struct snd_soc_pcm_runtime *rtd = substream->private_data; 107283b6124SGarlic Tseng struct mtk_base_afe *afe = snd_soc_platform_get_drvdata(rtd->platform); 108283b6124SGarlic Tseng struct mtk_base_afe_memif *memif = &afe->memif[rtd->cpu_dai->id]; 109283b6124SGarlic Tseng int irq_id; 110283b6124SGarlic Tseng 111283b6124SGarlic Tseng irq_id = memif->irq_usage; 112283b6124SGarlic Tseng 113283b6124SGarlic Tseng mtk_regmap_update_bits(afe->regmap, memif->data->agent_disable_reg, 114283b6124SGarlic Tseng 1 << memif->data->agent_disable_shift, 115283b6124SGarlic Tseng 1 << memif->data->agent_disable_shift); 116283b6124SGarlic Tseng 117283b6124SGarlic Tseng if (!memif->const_irq) { 118283b6124SGarlic Tseng mtk_dynamic_irq_release(afe, irq_id); 119283b6124SGarlic Tseng memif->irq_usage = -1; 120283b6124SGarlic Tseng memif->substream = NULL; 121283b6124SGarlic Tseng } 122283b6124SGarlic Tseng } 123283b6124SGarlic Tseng EXPORT_SYMBOL_GPL(mtk_afe_fe_shutdown); 124283b6124SGarlic Tseng 125283b6124SGarlic Tseng int mtk_afe_fe_hw_params(struct snd_pcm_substream *substream, 126283b6124SGarlic Tseng struct snd_pcm_hw_params *params, 127283b6124SGarlic Tseng struct snd_soc_dai *dai) 128283b6124SGarlic Tseng { 129283b6124SGarlic Tseng struct snd_soc_pcm_runtime *rtd = substream->private_data; 130283b6124SGarlic Tseng struct mtk_base_afe *afe = snd_soc_platform_get_drvdata(rtd->platform); 131283b6124SGarlic Tseng struct mtk_base_afe_memif *memif = &afe->memif[rtd->cpu_dai->id]; 132283b6124SGarlic Tseng int msb_at_bit33 = 0; 133283b6124SGarlic Tseng int ret, fs = 0; 134283b6124SGarlic Tseng 135283b6124SGarlic Tseng ret = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(params)); 136283b6124SGarlic Tseng if (ret < 0) 137283b6124SGarlic Tseng return ret; 138283b6124SGarlic Tseng 139283b6124SGarlic Tseng msb_at_bit33 = upper_32_bits(substream->runtime->dma_addr) ? 1 : 0; 140283b6124SGarlic Tseng memif->phys_buf_addr = lower_32_bits(substream->runtime->dma_addr); 141283b6124SGarlic Tseng memif->buffer_size = substream->runtime->dma_bytes; 142283b6124SGarlic Tseng 143283b6124SGarlic Tseng /* start */ 144283b6124SGarlic Tseng mtk_regmap_write(afe->regmap, memif->data->reg_ofs_base, 145283b6124SGarlic Tseng memif->phys_buf_addr); 146283b6124SGarlic Tseng /* end */ 147283b6124SGarlic Tseng mtk_regmap_write(afe->regmap, 148283b6124SGarlic Tseng memif->data->reg_ofs_base + AFE_BASE_END_OFFSET, 149283b6124SGarlic Tseng memif->phys_buf_addr + memif->buffer_size - 1); 150283b6124SGarlic Tseng 151283b6124SGarlic Tseng /* set MSB to 33-bit */ 152283b6124SGarlic Tseng mtk_regmap_update_bits(afe->regmap, memif->data->msb_reg, 153283b6124SGarlic Tseng 1 << memif->data->msb_shift, 154283b6124SGarlic Tseng msb_at_bit33 << memif->data->msb_shift); 155283b6124SGarlic Tseng 156283b6124SGarlic Tseng /* set channel */ 157283b6124SGarlic Tseng if (memif->data->mono_shift >= 0) { 158283b6124SGarlic Tseng unsigned int mono = (params_channels(params) == 1) ? 1 : 0; 159283b6124SGarlic Tseng 160283b6124SGarlic Tseng mtk_regmap_update_bits(afe->regmap, memif->data->mono_reg, 161283b6124SGarlic Tseng 1 << memif->data->mono_shift, 162283b6124SGarlic Tseng mono << memif->data->mono_shift); 163283b6124SGarlic Tseng } 164283b6124SGarlic Tseng 165283b6124SGarlic Tseng /* set rate */ 166283b6124SGarlic Tseng if (memif->data->fs_shift < 0) 167283b6124SGarlic Tseng return 0; 168283b6124SGarlic Tseng 169283b6124SGarlic Tseng fs = afe->memif_fs(substream, params_rate(params)); 170283b6124SGarlic Tseng 171283b6124SGarlic Tseng if (fs < 0) 172283b6124SGarlic Tseng return -EINVAL; 173283b6124SGarlic Tseng 174283b6124SGarlic Tseng mtk_regmap_update_bits(afe->regmap, memif->data->fs_reg, 175283b6124SGarlic Tseng memif->data->fs_maskbit << memif->data->fs_shift, 176283b6124SGarlic Tseng fs << memif->data->fs_shift); 177283b6124SGarlic Tseng 178283b6124SGarlic Tseng return 0; 179283b6124SGarlic Tseng } 180283b6124SGarlic Tseng EXPORT_SYMBOL_GPL(mtk_afe_fe_hw_params); 181283b6124SGarlic Tseng 182283b6124SGarlic Tseng int mtk_afe_fe_hw_free(struct snd_pcm_substream *substream, 183283b6124SGarlic Tseng struct snd_soc_dai *dai) 184283b6124SGarlic Tseng { 185283b6124SGarlic Tseng return snd_pcm_lib_free_pages(substream); 186283b6124SGarlic Tseng } 187283b6124SGarlic Tseng EXPORT_SYMBOL_GPL(mtk_afe_fe_hw_free); 188283b6124SGarlic Tseng 189283b6124SGarlic Tseng int mtk_afe_fe_trigger(struct snd_pcm_substream *substream, int cmd, 190283b6124SGarlic Tseng struct snd_soc_dai *dai) 191283b6124SGarlic Tseng { 192283b6124SGarlic Tseng struct snd_soc_pcm_runtime *rtd = substream->private_data; 193283b6124SGarlic Tseng struct snd_pcm_runtime * const runtime = substream->runtime; 194283b6124SGarlic Tseng struct mtk_base_afe *afe = snd_soc_platform_get_drvdata(rtd->platform); 195283b6124SGarlic Tseng struct mtk_base_afe_memif *memif = &afe->memif[rtd->cpu_dai->id]; 196283b6124SGarlic Tseng struct mtk_base_afe_irq *irqs = &afe->irqs[memif->irq_usage]; 197283b6124SGarlic Tseng const struct mtk_base_irq_data *irq_data = irqs->irq_data; 198283b6124SGarlic Tseng unsigned int counter = runtime->period_size; 199283b6124SGarlic Tseng int fs; 200283b6124SGarlic Tseng 201283b6124SGarlic Tseng dev_dbg(afe->dev, "%s %s cmd=%d\n", __func__, memif->data->name, cmd); 202283b6124SGarlic Tseng 203283b6124SGarlic Tseng switch (cmd) { 204283b6124SGarlic Tseng case SNDRV_PCM_TRIGGER_START: 205283b6124SGarlic Tseng case SNDRV_PCM_TRIGGER_RESUME: 206283b6124SGarlic Tseng if (memif->data->enable_shift >= 0) 207283b6124SGarlic Tseng mtk_regmap_update_bits(afe->regmap, 208283b6124SGarlic Tseng memif->data->enable_reg, 209283b6124SGarlic Tseng 1 << memif->data->enable_shift, 210283b6124SGarlic Tseng 1 << memif->data->enable_shift); 211283b6124SGarlic Tseng 212283b6124SGarlic Tseng /* set irq counter */ 213283b6124SGarlic Tseng mtk_regmap_update_bits(afe->regmap, irq_data->irq_cnt_reg, 214283b6124SGarlic Tseng irq_data->irq_cnt_maskbit 215283b6124SGarlic Tseng << irq_data->irq_cnt_shift, 216283b6124SGarlic Tseng counter << irq_data->irq_cnt_shift); 217283b6124SGarlic Tseng 218283b6124SGarlic Tseng /* set irq fs */ 219283b6124SGarlic Tseng fs = afe->irq_fs(substream, runtime->rate); 220283b6124SGarlic Tseng 221283b6124SGarlic Tseng if (fs < 0) 222283b6124SGarlic Tseng return -EINVAL; 223283b6124SGarlic Tseng 224283b6124SGarlic Tseng mtk_regmap_update_bits(afe->regmap, irq_data->irq_fs_reg, 225283b6124SGarlic Tseng irq_data->irq_fs_maskbit 226283b6124SGarlic Tseng << irq_data->irq_fs_shift, 227283b6124SGarlic Tseng fs << irq_data->irq_fs_shift); 228283b6124SGarlic Tseng 229283b6124SGarlic Tseng /* enable interrupt */ 230283b6124SGarlic Tseng mtk_regmap_update_bits(afe->regmap, irq_data->irq_en_reg, 231283b6124SGarlic Tseng 1 << irq_data->irq_en_shift, 232283b6124SGarlic Tseng 1 << irq_data->irq_en_shift); 233283b6124SGarlic Tseng 234283b6124SGarlic Tseng return 0; 235283b6124SGarlic Tseng case SNDRV_PCM_TRIGGER_STOP: 236283b6124SGarlic Tseng case SNDRV_PCM_TRIGGER_SUSPEND: 237283b6124SGarlic Tseng mtk_regmap_update_bits(afe->regmap, memif->data->enable_reg, 238283b6124SGarlic Tseng 1 << memif->data->enable_shift, 0); 239283b6124SGarlic Tseng /* disable interrupt */ 240283b6124SGarlic Tseng mtk_regmap_update_bits(afe->regmap, irq_data->irq_en_reg, 241283b6124SGarlic Tseng 1 << irq_data->irq_en_shift, 242283b6124SGarlic Tseng 0 << irq_data->irq_en_shift); 243283b6124SGarlic Tseng /* and clear pending IRQ */ 244283b6124SGarlic Tseng mtk_regmap_write(afe->regmap, irq_data->irq_clr_reg, 245283b6124SGarlic Tseng 1 << irq_data->irq_clr_shift); 246283b6124SGarlic Tseng return 0; 247283b6124SGarlic Tseng default: 248283b6124SGarlic Tseng return -EINVAL; 249283b6124SGarlic Tseng } 250283b6124SGarlic Tseng } 251283b6124SGarlic Tseng EXPORT_SYMBOL_GPL(mtk_afe_fe_trigger); 252283b6124SGarlic Tseng 253283b6124SGarlic Tseng int mtk_afe_fe_prepare(struct snd_pcm_substream *substream, 254283b6124SGarlic Tseng struct snd_soc_dai *dai) 255283b6124SGarlic Tseng { 256283b6124SGarlic Tseng struct snd_soc_pcm_runtime *rtd = substream->private_data; 257283b6124SGarlic Tseng struct mtk_base_afe *afe = snd_soc_platform_get_drvdata(rtd->platform); 258283b6124SGarlic Tseng struct mtk_base_afe_memif *memif = &afe->memif[rtd->cpu_dai->id]; 259283b6124SGarlic Tseng int hd_audio = 0; 260283b6124SGarlic Tseng 261283b6124SGarlic Tseng /* set hd mode */ 262283b6124SGarlic Tseng switch (substream->runtime->format) { 263283b6124SGarlic Tseng case SNDRV_PCM_FORMAT_S16_LE: 264283b6124SGarlic Tseng hd_audio = 0; 265283b6124SGarlic Tseng break; 266283b6124SGarlic Tseng case SNDRV_PCM_FORMAT_S32_LE: 267283b6124SGarlic Tseng hd_audio = 1; 268283b6124SGarlic Tseng break; 269283b6124SGarlic Tseng case SNDRV_PCM_FORMAT_S24_LE: 270283b6124SGarlic Tseng hd_audio = 1; 271283b6124SGarlic Tseng break; 272283b6124SGarlic Tseng default: 273283b6124SGarlic Tseng dev_err(afe->dev, "%s() error: unsupported format %d\n", 274283b6124SGarlic Tseng __func__, substream->runtime->format); 275283b6124SGarlic Tseng break; 276283b6124SGarlic Tseng } 277283b6124SGarlic Tseng 278283b6124SGarlic Tseng mtk_regmap_update_bits(afe->regmap, memif->data->hd_reg, 279283b6124SGarlic Tseng 1 << memif->data->hd_shift, 280283b6124SGarlic Tseng hd_audio << memif->data->hd_shift); 281283b6124SGarlic Tseng 282283b6124SGarlic Tseng return 0; 283283b6124SGarlic Tseng } 284283b6124SGarlic Tseng EXPORT_SYMBOL_GPL(mtk_afe_fe_prepare); 285283b6124SGarlic Tseng 286283b6124SGarlic Tseng const struct snd_soc_dai_ops mtk_afe_fe_ops = { 287283b6124SGarlic Tseng .startup = mtk_afe_fe_startup, 288283b6124SGarlic Tseng .shutdown = mtk_afe_fe_shutdown, 289283b6124SGarlic Tseng .hw_params = mtk_afe_fe_hw_params, 290283b6124SGarlic Tseng .hw_free = mtk_afe_fe_hw_free, 291283b6124SGarlic Tseng .prepare = mtk_afe_fe_prepare, 292283b6124SGarlic Tseng .trigger = mtk_afe_fe_trigger, 293283b6124SGarlic Tseng }; 294283b6124SGarlic Tseng EXPORT_SYMBOL_GPL(mtk_afe_fe_ops); 295283b6124SGarlic Tseng 296283b6124SGarlic Tseng static DEFINE_MUTEX(irqs_lock); 297283b6124SGarlic Tseng int mtk_dynamic_irq_acquire(struct mtk_base_afe *afe) 298283b6124SGarlic Tseng { 299283b6124SGarlic Tseng int i; 300283b6124SGarlic Tseng 301283b6124SGarlic Tseng mutex_lock(&afe->irq_alloc_lock); 302283b6124SGarlic Tseng for (i = 0; i < afe->irqs_size; ++i) { 303283b6124SGarlic Tseng if (afe->irqs[i].irq_occupyed == 0) { 304283b6124SGarlic Tseng afe->irqs[i].irq_occupyed = 1; 305283b6124SGarlic Tseng mutex_unlock(&afe->irq_alloc_lock); 306283b6124SGarlic Tseng return i; 307283b6124SGarlic Tseng } 308283b6124SGarlic Tseng } 309283b6124SGarlic Tseng mutex_unlock(&afe->irq_alloc_lock); 310283b6124SGarlic Tseng return afe->irqs_size; 311283b6124SGarlic Tseng } 312283b6124SGarlic Tseng EXPORT_SYMBOL_GPL(mtk_dynamic_irq_acquire); 313283b6124SGarlic Tseng 314283b6124SGarlic Tseng int mtk_dynamic_irq_release(struct mtk_base_afe *afe, int irq_id) 315283b6124SGarlic Tseng { 316283b6124SGarlic Tseng mutex_lock(&afe->irq_alloc_lock); 317283b6124SGarlic Tseng if (irq_id >= 0 && irq_id < afe->irqs_size) { 318283b6124SGarlic Tseng afe->irqs[irq_id].irq_occupyed = 0; 319283b6124SGarlic Tseng mutex_unlock(&afe->irq_alloc_lock); 320283b6124SGarlic Tseng return 0; 321283b6124SGarlic Tseng } 322283b6124SGarlic Tseng mutex_unlock(&afe->irq_alloc_lock); 323283b6124SGarlic Tseng return -EINVAL; 324283b6124SGarlic Tseng } 325283b6124SGarlic Tseng EXPORT_SYMBOL_GPL(mtk_dynamic_irq_release); 326283b6124SGarlic Tseng 327283b6124SGarlic Tseng int mtk_afe_dai_suspend(struct snd_soc_dai *dai) 328283b6124SGarlic Tseng { 329283b6124SGarlic Tseng struct mtk_base_afe *afe = dev_get_drvdata(dai->dev); 330283b6124SGarlic Tseng struct device *dev = afe->dev; 331283b6124SGarlic Tseng struct regmap *regmap = afe->regmap; 332283b6124SGarlic Tseng int i; 333283b6124SGarlic Tseng 334283b6124SGarlic Tseng if (pm_runtime_status_suspended(dev) || afe->suspended) 335283b6124SGarlic Tseng return 0; 336283b6124SGarlic Tseng 337283b6124SGarlic Tseng if (!afe->reg_back_up) 338283b6124SGarlic Tseng afe->reg_back_up = 339283b6124SGarlic Tseng devm_kcalloc(dev, afe->reg_back_up_list_num, 340283b6124SGarlic Tseng sizeof(unsigned int), GFP_KERNEL); 341283b6124SGarlic Tseng 342283b6124SGarlic Tseng for (i = 0; i < afe->reg_back_up_list_num; i++) 343283b6124SGarlic Tseng regmap_read(regmap, afe->reg_back_up_list[i], 344283b6124SGarlic Tseng &afe->reg_back_up[i]); 345283b6124SGarlic Tseng 346283b6124SGarlic Tseng afe->suspended = true; 347283b6124SGarlic Tseng afe->runtime_suspend(dev); 348283b6124SGarlic Tseng return 0; 349283b6124SGarlic Tseng } 350283b6124SGarlic Tseng EXPORT_SYMBOL_GPL(mtk_afe_dai_suspend); 351283b6124SGarlic Tseng 352283b6124SGarlic Tseng int mtk_afe_dai_resume(struct snd_soc_dai *dai) 353283b6124SGarlic Tseng { 354283b6124SGarlic Tseng struct mtk_base_afe *afe = dev_get_drvdata(dai->dev); 355283b6124SGarlic Tseng struct device *dev = afe->dev; 356283b6124SGarlic Tseng struct regmap *regmap = afe->regmap; 357283b6124SGarlic Tseng int i = 0; 358283b6124SGarlic Tseng 359283b6124SGarlic Tseng if (pm_runtime_status_suspended(dev) || !afe->suspended) 360283b6124SGarlic Tseng return 0; 361283b6124SGarlic Tseng 362283b6124SGarlic Tseng afe->runtime_resume(dev); 363283b6124SGarlic Tseng 364283b6124SGarlic Tseng if (!afe->reg_back_up) 365283b6124SGarlic Tseng dev_dbg(dev, "%s no reg_backup\n", __func__); 366283b6124SGarlic Tseng 367283b6124SGarlic Tseng for (i = 0; i < afe->reg_back_up_list_num; i++) 368283b6124SGarlic Tseng mtk_regmap_write(regmap, afe->reg_back_up_list[i], 369283b6124SGarlic Tseng afe->reg_back_up[i]); 370283b6124SGarlic Tseng 371283b6124SGarlic Tseng afe->suspended = false; 372283b6124SGarlic Tseng return 0; 373283b6124SGarlic Tseng } 374283b6124SGarlic Tseng EXPORT_SYMBOL_GPL(mtk_afe_dai_resume); 375283b6124SGarlic Tseng 376283b6124SGarlic Tseng MODULE_DESCRIPTION("Mediatek simple fe dai operator"); 377283b6124SGarlic Tseng MODULE_AUTHOR("Garlic Tseng <garlic.tseng@mediatek.com>"); 378283b6124SGarlic Tseng MODULE_LICENSE("GPL v2"); 379283b6124SGarlic Tseng 380