kernel_samsung_a34x-permissive/sound/soc/mediatek/common_int/mtk-soc-pcm-capture.c

// SPDX-License-Identifier: GPL-2.0
/*
 * Copyright (c) 2019 MediaTek Inc.
 * Author: Michael Hsiao <michael.hsiao@mediatek.com>
 */

/*******************************************************************************
 *
 * Filename:
 * ---------
 *   mtk_pcm_capture.c
 *
 * Project:
 * --------
 *   Audio Driver Kernel Function
 *
 * Description:
 * ------------
 *   Audio Ul1 data1 uplink
 *
 * Author:
 * -------
 * Chipeng Chang
 *
 *------------------------------------------------------------------------------
 *
 *
 ******************************************************************************
 */

/*****************************************************************************
 *                     C O M P I L E R   F L A G S
 *****************************************************************************/

/*****************************************************************************
 *                E X T E R N A L   R E F E R E N C E S
 *****************************************************************************/

#include <linux/dma-mapping.h>
#include <sound/pcm_params.h>

#include "mtk-auddrv-afe.h"
#include "mtk-auddrv-ana.h"
#include "mtk-auddrv-clk.h"
#include "mtk-auddrv-common.h"
#include "mtk-auddrv-def.h"
#include "mtk-auddrv-kernel.h"
#include "mtk-soc-afe-control.h"
#include "mtk-soc-pcm-common.h"
#include "mtk-soc-pcm-platform.h"

#define AUDIO_ALLOCATE_SMP_RATE_DECLARE

/* #define CAPTURE_FORCE_USE_DRAM //foruse DRAM for record */

/* information about */
struct afe_mem_control_t *VUL_Control_context;
static struct snd_dma_buffer *Capture_dma_buf;
static bool mCaptureUseSram;

static bool vcore_dvfs_enable;
static int capture_hdinput_control;
static const void *irq_user_id;
static unsigned int irq2_cnt;
static bool mPrepareDone;
static int use_adc2_for_ch1_ch2;
static bool is_adc1_closed_before;

static int cap_mem_blk;
static int cap_mem_blk_io;

/*
 *    function implementation
 */
static int mtk_capture_probe(struct platform_device *pdev);
static int mtk_capture_pcm_close(struct snd_pcm_substream *substream);
static int mtk_afe_capture_component_probe(struct snd_soc_component *component);

static const char *const capture_HD_input[] = {"Off", "On"};

static const struct soc_enum Audio_capture_Enum[] = {
	SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(capture_HD_input), capture_HD_input),
};

static int Audio_capture_hdinput_Get(struct snd_kcontrol *kcontrol,
				     struct snd_ctl_elem_value *ucontrol)
{
	ucontrol->value.integer.value[0] = capture_hdinput_control;
	return 0;
}

static int Audio_capture_hdinput_Set(struct snd_kcontrol *kcontrol,
				     struct snd_ctl_elem_value *ucontrol)
{
	pr_debug("%s()\n", __func__);
	if (ucontrol->value.enumerated.item[0] > ARRAY_SIZE(capture_HD_input)) {
		pr_warn("return -EINVAL\n");
		return -EINVAL;
	}

	capture_hdinput_control = ucontrol->value.integer.value[0];

	if (GetMemoryPathEnable(Soc_Aud_Digital_Block_MEM_HDMI) == true) {
		pr_err("return HDMI enabled\n");
		return 0;
	}

	return 0;
}

static int Audio_Irq2cnt_Get(struct snd_kcontrol *kcontrol,
			     struct snd_ctl_elem_value *ucontrol)
{
	AudDrv_Clk_On();
	ucontrol->value.integer.value[0] = Afe_Get_Reg(AFE_IRQ_MCU_CNT2);
	AudDrv_Clk_Off();
	return 0;
}

static int Audio_Irq2cnt_Set(struct snd_kcontrol *kcontrol,
			     struct snd_ctl_elem_value *ucontrol)
{
	pr_debug("%s(), irq_user_id = %p, irq2_cnt = %d, value = %ld\n",
		 __func__, irq_user_id, irq2_cnt,
		 ucontrol->value.integer.value[0]);

	if (irq2_cnt == ucontrol->value.integer.value[0])
		return 0;

	irq2_cnt = ucontrol->value.integer.value[0];

	AudDrv_Clk_On();
	if (irq_user_id && irq2_cnt)
		irq_update_user(irq_user_id, Soc_Aud_IRQ_MCU_MODE_IRQ2_MCU_MODE,
				0, irq2_cnt);
	else
		pr_warn("warn, cannot update irq counter, user_id = %p, irq2_cnt = %d\n",
			irq_user_id, irq2_cnt);

	AudDrv_Clk_Off();
	return 0;
}

static int capture_use_adc2_for_ch1_ch2_get(struct snd_kcontrol *kcontrol,
					    struct snd_ctl_elem_value *ucontrol)
{
	pr_debug("%s(), mtk_ap_dmic_control %d\n", __func__,
		 use_adc2_for_ch1_ch2);
	ucontrol->value.integer.value[0] = use_adc2_for_ch1_ch2;

	return 0;
}

static int capture_use_adc2_for_ch1_ch2_set(struct snd_kcontrol *kcontrol,
					    struct snd_ctl_elem_value *ucontrol)
{
	if (ucontrol->value.enumerated.item[0] > ARRAY_SIZE(capture_HD_input)) {
		pr_err("return -EINVAL\n");
		return -EINVAL;
	}

	use_adc2_for_ch1_ch2 = ucontrol->value.integer.value[0];
	pr_debug("%s(), use_adc2_for_ch1_ch2 %d\n", __func__,
		 use_adc2_for_ch1_ch2);
	AudDrv_Clk_On();

	if (use_adc2_for_ch1_ch2) {
		unsigned int eSamplingRate =
			get_dai_rate(Soc_Aud_Digital_Block_ADDA_UL);

		/* turn off adc1 */
		is_adc1_closed_before = true;
		SetIntfConnection(Soc_Aud_InterCon_DisConnect,
				  Soc_Aud_AFE_IO_Block_ADDA_UL, cap_mem_blk_io);
		SetMemoryPathEnable(Soc_Aud_Digital_Block_ADDA_UL, false);
		if (GetMemoryPathEnable(Soc_Aud_Digital_Block_ADDA_UL) == false)
			set_adc_enable(false);

		/* turn on adc2 */
		if (GetMemoryPathEnable(Soc_Aud_Digital_Block_ADDA_UL2) ==
		    false) {
			pr_debug("%s(), sample rate = %d", __func__,
				eSamplingRate);
			SetMemoryPathEnable(Soc_Aud_Digital_Block_ADDA_UL2,
					    true);
			set_adc2_in(eSamplingRate);
			set_adc2_enable(true);
		} else {
			SetMemoryPathEnable(Soc_Aud_Digital_Block_ADDA_UL2,
					    true);
		}

		SetIntfConnection(Soc_Aud_InterCon_Connection,
				  Soc_Aud_AFE_IO_Block_ADDA_UL2,
				  cap_mem_blk_io);
		EnableAfe(true);
	} else {
		SetIntfConnection(Soc_Aud_InterCon_DisConnect,
				  Soc_Aud_AFE_IO_Block_ADDA_UL2,
				  cap_mem_blk_io);

		SetMemoryPathEnable(Soc_Aud_Digital_Block_ADDA_UL2, false);
		if (GetMemoryPathEnable(Soc_Aud_Digital_Block_ADDA_UL2) ==
		    false)
			set_adc2_enable(false);

		EnableAfe(false);
	}

	AudDrv_Clk_Off();
	return 0;
}

static const struct snd_kcontrol_new Audio_snd_capture_controls[] = {
	SOC_ENUM_EXT("Audio_capture_hd_Switch", Audio_capture_Enum[0],
		     Audio_capture_hdinput_Get, Audio_capture_hdinput_Set),
	SOC_SINGLE_EXT("Audio IRQ2 CNT", SND_SOC_NOPM, 0, IRQ_MAX_RATE, 0,
		       Audio_Irq2cnt_Get, Audio_Irq2cnt_Set),
	SOC_ENUM_EXT("capture_use_adc2_for_ch1_ch2", Audio_capture_Enum[0],
		     capture_use_adc2_for_ch1_ch2_get,
		     capture_use_adc2_for_ch1_ch2_set),
};

static struct snd_pcm_hardware mtk_capture_hardware = {
	.info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
		 SNDRV_PCM_INFO_RESUME | SNDRV_PCM_INFO_MMAP_VALID |
		 SNDRV_PCM_INFO_NO_PERIOD_WAKEUP),
	.formats = SND_SOC_ADV_MT_FMTS,
	.rates = SOC_HIGH_USE_RATE,
	.rate_min = SOC_HIGH_USE_RATE_MIN,
	.rate_max = SOC_HIGH_USE_RATE_MAX,
	.channels_min = SOC_HIGH_USE_CHANNELS_MIN,
	.channels_max = SOC_HIGH_USE_CHANNELS_MAX,
	.buffer_bytes_max = UL1_MAX_BUFFER_SIZE,
	.period_bytes_max = UL1_MAX_BUFFER_SIZE,
	.periods_min = UL1_MIN_PERIOD_SIZE,
	.periods_max = UL1_MAX_PERIOD_SIZE,
	.fifo_size = 0,
};

static int mtk_capture_pcm_prepare(struct snd_pcm_substream *substream)
{
	pr_debug("%s, format = %d, rate = %d\n", __func__,
		substream->runtime->format, substream->runtime->rate);

	if (mPrepareDone == false) {
		SetMemifSubStream(cap_mem_blk, substream);

		if (substream->runtime->format == SNDRV_PCM_FORMAT_S32_LE ||
		    substream->runtime->format == SNDRV_PCM_FORMAT_U32_LE) {
			SetMemIfFetchFormatPerSample(
				cap_mem_blk,
				AFE_WLEN_32_BIT_ALIGN_8BIT_0_24BIT_DATA);
			SetConnectionFormat(OUTPUT_DATA_FORMAT_24BIT,
					    cap_mem_blk_io);
		} else {
			SetMemIfFetchFormatPerSample(cap_mem_blk,
						     AFE_WLEN_16_BIT);
			SetConnectionFormat(OUTPUT_DATA_FORMAT_16BIT,
					    cap_mem_blk_io);
		}

		if (GetMemoryPathEnable(Soc_Aud_Digital_Block_ADDA_UL) ==
		    false) {
			SetMemoryPathEnable(Soc_Aud_Digital_Block_ADDA_UL,
					    true);
			set_adc_in(substream->runtime->rate);
			set_adc_enable(true);
		} else {
			SetMemoryPathEnable(Soc_Aud_Digital_Block_ADDA_UL,
					    true);
		}

		/* 3-mic setting*/
		if (substream->runtime->channels > 2) {
			SetIntfConnection(Soc_Aud_InterCon_Connection,
					  Soc_Aud_AFE_IO_Block_ADDA_UL,
					  Soc_Aud_AFE_IO_Block_MEM_VUL);
			SetIntfConnection(Soc_Aud_InterCon_Connection,
					  Soc_Aud_AFE_IO_Block_ADDA_UL2,
					  Soc_Aud_AFE_IO_Block_MEM_VUL_DATA2);

			if (substream->runtime->format ==
				    SNDRV_PCM_FORMAT_S32_LE ||
			    substream->runtime->format ==
				    SNDRV_PCM_FORMAT_U32_LE)
				SetConnectionFormat(
					OUTPUT_DATA_FORMAT_24BIT,
					Soc_Aud_AFE_IO_Block_MEM_VUL);
			else
				SetConnectionFormat(
					OUTPUT_DATA_FORMAT_16BIT,
					Soc_Aud_AFE_IO_Block_MEM_VUL);

			if (GetMemoryPathEnable(
				    Soc_Aud_Digital_Block_ADDA_UL2) == false) {
				SetMemoryPathEnable(
					Soc_Aud_Digital_Block_ADDA_UL2, true);
				set_adc2_in(substream->runtime->rate);
				set_adc2_enable(true);
			} else {
				SetMemoryPathEnable(
					Soc_Aud_Digital_Block_ADDA_UL2, true);
			}
		} else {
			SetIntfConnection(Soc_Aud_InterCon_Connection,
					  Soc_Aud_AFE_IO_Block_ADDA_UL,
					  cap_mem_blk_io);
		}

		mPrepareDone = true;
	}
	return 0;
}

static int mtk_capture_alsa_stop(struct snd_pcm_substream *substream)
{
	pr_debug("%s\n", __func__);

	irq_user_id = NULL;

	irq_remove_substream_user(substream, irq_request_number(cap_mem_blk));

	SetMemoryPathEnable(cap_mem_blk, false);

	ClearMemBlock(cap_mem_blk);
	return 0;
}

static snd_pcm_uframes_t
mtk_capture_pcm_pointer(struct snd_pcm_substream *substream)
{
	return get_mem_frame_index(substream, VUL_Control_context, cap_mem_blk);
}

static int mtk_capture_pcm_hw_params(struct snd_pcm_substream *substream,
				     struct snd_pcm_hw_params *hw_params)
{
	struct snd_pcm_runtime *runtime = substream->runtime;
	struct snd_dma_buffer *dma_buf = &substream->dma_buffer;
	int ret = 0;

	dma_buf->dev.type = SNDRV_DMA_TYPE_DEV;
	dma_buf->dev.dev = substream->pcm->card->dev;
	dma_buf->private_data = NULL;

	runtime->dma_bytes = params_buffer_bytes(hw_params);

	if (AllocateAudioSram(&substream->runtime->dma_addr,
			      &substream->runtime->dma_area,
			      substream->runtime->dma_bytes, substream,
			      params_format(hw_params), false) == 0) {
#if defined(AUD_DEBUG_LOG)
		pr_debug("AllocateAudioSram success\n");
#endif
		SetHighAddr(cap_mem_blk, false, substream->runtime->dma_addr);
	} else if (Capture_dma_buf->area) {
#if defined(AUD_DEBUG_LOG)
		pr_debug("buf = %p area = %p addr = 0x%lx\n",
		       Capture_dma_buf, Capture_dma_buf->area,
		       (long)Capture_dma_buf->addr);
#endif
		runtime->dma_area = Capture_dma_buf->area;
		runtime->dma_addr = Capture_dma_buf->addr;
		SetHighAddr(cap_mem_blk, true, runtime->dma_addr);
		mCaptureUseSram = true;
		AudDrv_Emi_Clk_On();
	} else {
		pr_info("capture_pcm_hw_params snd_pcm_lib_malloc_pages\n");
		ret = snd_pcm_lib_malloc_pages(substream,
					       params_buffer_bytes(hw_params));
	}

	set_mem_block(substream, hw_params, VUL_Control_context, cap_mem_blk);
#if defined(AUD_DEBUG_LOG)
	pr_debug("%s dma_bytes = %zu dma_area = %p dma_addr = 0x%lx\n",
	       __func__, substream->runtime->dma_bytes,
	       substream->runtime->dma_area,
	       (long)substream->runtime->dma_addr);
#endif
	return ret;
}

static int mtk_capture_pcm_hw_free(struct snd_pcm_substream *substream)
{
	if (Capture_dma_buf->area) {
		if (mCaptureUseSram == true) {
			AudDrv_Emi_Clk_Off();
			mCaptureUseSram = false;
		} else
			freeAudioSram((void *)substream);
		return 0;
	} else
		return snd_pcm_lib_free_pages(substream);
}

static struct snd_pcm_hw_constraint_list constraints_sample_rates = {
	.count = ARRAY_SIZE(soc_high_supported_sample_rates),
	.list = soc_high_supported_sample_rates,
};

static struct snd_pcm_hw_constraint_list constraints_channels = {
	.count = ARRAY_SIZE(soc_multiple_supported_channels),
	.list = soc_multiple_supported_channels,
};

static int mtk_capture_pcm_open(struct snd_pcm_substream *substream)
{
	struct snd_pcm_runtime *runtime = substream->runtime;
	int ret = 0;

	pr_debug("%s(), cap_mem_blk %d, cap_mem_blk_io %d\n", __func__,
		 cap_mem_blk, cap_mem_blk_io);
	AudDrv_Clk_On();
	VUL_Control_context = Get_Mem_ControlT(cap_mem_blk);

	runtime->hw = mtk_capture_hardware;
	memcpy((void *)(&(runtime->hw)), (void *)&mtk_capture_hardware,
	       sizeof(struct snd_pcm_hardware));

	ret = snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
					 &constraints_sample_rates);
	ret = snd_pcm_hw_constraint_list(
		runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS, &constraints_channels);
	ret = snd_pcm_hw_constraint_integer(runtime,
					    SNDRV_PCM_HW_PARAM_PERIODS);

	if (ret < 0) {
		pr_err("capture_pcm_close\n");
		mtk_capture_pcm_close(substream);
		return ret;
	}

	return 0;
}

static int mtk_capture_pcm_close(struct snd_pcm_substream *substream)
{
	pr_debug("%s\n", __func__);

	if (mPrepareDone == true) {
		if (!is_adc1_closed_before) {
			SetMemoryPathEnable(Soc_Aud_Digital_Block_ADDA_UL,
					    false);
			if (GetMemoryPathEnable(
				    Soc_Aud_Digital_Block_ADDA_UL) == false)
				set_adc_enable(false);
		} else {
			pr_debug(
				"%s(), bypass disable adc, already disable before.",
				__func__);
			is_adc1_closed_before = false;
		}

		/* 3-mic setting */
		if (substream->runtime->channels > 2) {
			SetIntfConnection(Soc_Aud_InterCon_DisConnect,
					  Soc_Aud_AFE_IO_Block_ADDA_UL,
					  Soc_Aud_AFE_IO_Block_MEM_VUL);
			SetIntfConnection(Soc_Aud_InterCon_DisConnect,
					  Soc_Aud_AFE_IO_Block_ADDA_UL2,
					  Soc_Aud_AFE_IO_Block_MEM_VUL_DATA2);

			SetMemoryPathEnable(Soc_Aud_Digital_Block_ADDA_UL2,
					    false);
			if (GetMemoryPathEnable(
				    Soc_Aud_Digital_Block_ADDA_UL2) == false)
				set_adc2_enable(false);
		} else {
			SetIntfConnection(Soc_Aud_InterCon_DisConnect,
					  Soc_Aud_AFE_IO_Block_ADDA_UL,
					  cap_mem_blk_io);
		}

		RemoveMemifSubStream(cap_mem_blk, substream);

		EnableAfe(false);
		mPrepareDone = false;
	}
	AudDrv_Clk_Off();
	vcore_dvfs(&vcore_dvfs_enable, true);
	return 0;
}

static int mtk_capture_alsa_start(struct snd_pcm_substream *substream)
{
	pr_debug("%s\n", __func__);

	/* set memory */
	SetSampleRate(cap_mem_blk, substream->runtime->rate);
	SetChannels(cap_mem_blk, substream->runtime->channels);
	SetMemoryPathEnable(cap_mem_blk, true);
	udelay(300);
	/* here to set interrupt */
	irq_add_substream_user(substream, irq_request_number(cap_mem_blk),
			       substream->runtime->rate,
			       substream->runtime->period_size);
	irq_user_id = substream;

	EnableAfe(true);
	return 0;
}

static int mtk_capture_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
{
	switch (cmd) {
	case SNDRV_PCM_TRIGGER_START:
	case SNDRV_PCM_TRIGGER_RESUME:
		return mtk_capture_alsa_start(substream);
	case SNDRV_PCM_TRIGGER_STOP:
	case SNDRV_PCM_TRIGGER_SUSPEND:
		return mtk_capture_alsa_stop(substream);
	}
	return -EINVAL;
}

static int mtk_capture_pcm_copy(struct snd_pcm_substream *substream,
				int channel, unsigned long pos,
				void __user *dst, unsigned long count)
{
	vcore_dvfs(&vcore_dvfs_enable, false);
	return mtk_memblk_copy(substream, channel, pos, dst, count,
			       VUL_Control_context, cap_mem_blk);
}

static int mtk_capture_pcm_silence(struct snd_pcm_substream *substream,
				   int channel,
				   unsigned long pos,
				   unsigned long bytes)
{
	pr_debug("dummy_pcm_silence\n");
	return 0; /* do nothing */
}

static void *dummy_page[2];

static struct page *mtk_capture_pcm_page(struct snd_pcm_substream *substream,
					 unsigned long offset)
{
	return virt_to_page(dummy_page[substream->stream]); /* the same page */
}

static struct snd_pcm_ops mtk_afe_capture_ops = {
	.open = mtk_capture_pcm_open,
	.close = mtk_capture_pcm_close,
	.ioctl = snd_pcm_lib_ioctl,
	.hw_params = mtk_capture_pcm_hw_params,
	.hw_free = mtk_capture_pcm_hw_free,
	.prepare = mtk_capture_pcm_prepare,
	.trigger = mtk_capture_pcm_trigger,
	.pointer = mtk_capture_pcm_pointer,
	.copy_user = mtk_capture_pcm_copy,
	.fill_silence = mtk_capture_pcm_silence,
	.page = mtk_capture_pcm_page,
	.mmap = mtk_pcm_mmap,
};

static struct snd_soc_component_driver mtk_soc_component = {
	.name = AFE_PCM_NAME,
	.ops = &mtk_afe_capture_ops,
	.probe = mtk_afe_capture_component_probe,
};

static int mtk_capture_probe(struct platform_device *pdev)
{
	pr_debug("mtk_capture_probe\n");

	pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
	if (pdev->dev.dma_mask == NULL)
		pdev->dev.dma_mask = &pdev->dev.coherent_dma_mask;

	if (pdev->dev.of_node)
		dev_set_name(&pdev->dev, "%s", MT_SOC_UL1_PCM);
	pdev->name = pdev->dev.kobj.name;

	pr_debug("%s: dev name %s\n", __func__, dev_name(&pdev->dev));
	return snd_soc_register_component(&pdev->dev,
					  &mtk_soc_component,
					  NULL,
					  0);
}

static int mtk_afe_capture_component_probe(struct snd_soc_component *component)
{
	cap_mem_blk = get_usage_digital_block(AUDIO_USAGE_PCM_CAPTURE);
	cap_mem_blk_io = get_usage_digital_block_io(AUDIO_USAGE_PCM_CAPTURE);

	if (cap_mem_blk < 0 || cap_mem_blk_io < 0) {
		pr_debug("%s(), invalid mem blk %d, io %d, use default\n",
			 __func__, cap_mem_blk, cap_mem_blk_io);
		cap_mem_blk = Soc_Aud_Digital_Block_MEM_VUL;
		cap_mem_blk_io = Soc_Aud_AFE_IO_Block_MEM_VUL;
	}

	pr_debug("%s(), cap_mem_blk %d, cap_mem_blk_io %d\n", __func__,
		 cap_mem_blk, cap_mem_blk_io);

	snd_soc_add_component_controls(component, Audio_snd_capture_controls,
				      ARRAY_SIZE(Audio_snd_capture_controls));
	AudDrv_Allocate_mem_Buffer(component->dev, cap_mem_blk,
				   UL1_MAX_BUFFER_SIZE);
	Capture_dma_buf = Get_Mem_Buffer(cap_mem_blk);
	return 0;
}

static int mtk_capture_remove(struct platform_device *pdev)
{
	snd_soc_unregister_component(&pdev->dev);
	return 0;
}

#ifdef CONFIG_OF
static const struct of_device_id mt_soc_pcm_capture_of_ids[] = {
	{
		.compatible = "mediatek,mt_soc_pcm_capture",
	},
	{} };
#endif

static struct platform_driver mtk_afe_capture_driver = {
	.driver = {

			.name = MT_SOC_UL1_PCM,
			.owner = THIS_MODULE,
#ifdef CONFIG_OF
			.of_match_table = mt_soc_pcm_capture_of_ids,
#endif
		},
	.probe = mtk_capture_probe,
	.remove = mtk_capture_remove,
};

#ifndef CONFIG_OF
static struct platform_device *soc_mtkafe_capture_dev;
#endif

static int __init mtk_soc_capture_platform_init(void)
{
	int ret = 0;

	pr_info("%s\n", __func__);
#ifndef CONFIG_OF
	soc_mtkafe_capture_dev = platform_device_alloc(MT_SOC_UL1_PCM, -1);
	if (!soc_mtkafe_capture_dev)
		return -ENOMEM;

	ret = platform_device_add(soc_mtkafe_capture_dev);
	if (ret != 0) {
		platform_device_put(soc_mtkafe_capture_dev);
		return ret;
	}
#endif
	ret = platform_driver_register(&mtk_afe_capture_driver);
	return ret;
}
module_init(mtk_soc_capture_platform_init);

static void __exit mtk_soc_platform_exit(void)
{

	platform_driver_unregister(&mtk_afe_capture_driver);
}
module_exit(mtk_soc_platform_exit);

MODULE_DESCRIPTION("AFE PCM module platform driver");
MODULE_LICENSE("GPL");