diff --git a/drivers/media/platform/nxp/Kconfig b/drivers/media/platform/nxp/Kconfig
index 40e3436669e2..8234644ee341 100644
--- a/drivers/media/platform/nxp/Kconfig
+++ b/drivers/media/platform/nxp/Kconfig
@@ -67,3 +67,15 @@ config VIDEO_MX2_EMMAPRP
 
 source "drivers/media/platform/nxp/dw100/Kconfig"
 source "drivers/media/platform/nxp/imx-jpeg/Kconfig"
+
+config VIDEO_IMX_ASRC
+	tristate "NXP i.MX ASRC M2M support"
+	depends on V4L_MEM2MEM_DRIVERS
+	depends on MEDIA_SUPPORT
+	select VIDEOBUF2_DMA_CONTIG
+	select V4L2_MEM2MEM_DEV
+	help
+	    Say Y if you want to add ASRC M2M support for NXP CPUs.
+	    It is a complement for ASRC M2P and ASRC P2M features.
+	    This option is only useful for out-of-tree drivers since
+	    in-tree drivers select it automatically.
diff --git a/drivers/media/platform/nxp/Makefile b/drivers/media/platform/nxp/Makefile
index 4d90eb713652..1325675e34f5 100644
--- a/drivers/media/platform/nxp/Makefile
+++ b/drivers/media/platform/nxp/Makefile
@@ -9,3 +9,4 @@ obj-$(CONFIG_VIDEO_IMX8MQ_MIPI_CSI2) += imx8mq-mipi-csi2.o
 obj-$(CONFIG_VIDEO_IMX_MIPI_CSIS) += imx-mipi-csis.o
 obj-$(CONFIG_VIDEO_IMX_PXP) += imx-pxp.o
 obj-$(CONFIG_VIDEO_MX2_EMMAPRP) += mx2_emmaprp.o
+obj-$(CONFIG_VIDEO_IMX_ASRC) += imx-asrc.o
diff --git a/drivers/media/platform/nxp/imx-asrc.c b/drivers/media/platform/nxp/imx-asrc.c
new file mode 100644
index 000000000000..5ba1c7b88631
--- /dev/null
+++ b/drivers/media/platform/nxp/imx-asrc.c
@@ -0,0 +1,1186 @@
+// SPDX-License-Identifier: GPL-2.0
+//
+// Copyright (C) 2014-2016 Freescale Semiconductor, Inc.
+// Copyright (C) 2019-2023 NXP
+//
+// Freescale ASRC Memory to Memory (M2M) driver
+
+#include <linux/dma/imx-dma.h>
+#include <linux/pm_runtime.h>
+#include <media/v4l2-ctrls.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-event.h>
+#include <media/v4l2-fh.h>
+#include <media/v4l2-ioctl.h>
+#include <media/v4l2-mem2mem.h>
+#include <media/videobuf2-dma-contig.h>
+#include <sound/dmaengine_pcm.h>
+#include <sound/fsl_asrc_common.h>
+
+#define V4L_CAP OUT
+#define V4L_OUT IN
+
+#define ASRC_xPUT_DMA_CALLBACK(dir) \
+	(((dir) == V4L_OUT) ? asrc_input_dma_callback \
+	: asrc_output_dma_callback)
+
+#define DIR_STR(dir) (dir) == V4L_OUT ? "out" : "cap"
+
+/* Maximum output and capture buffer size */
+#define ASRC_M2M_BUFFER_SIZE (512 * 1024)
+
+/* Maximum output and capture period size */
+#define ASRC_M2M_PERIOD_SIZE (48 * 1024)
+
+struct asrc_pair_m2m {
+	struct fsl_asrc_pair *pair;
+	struct asrc_m2m *m2m;
+	struct v4l2_fh fh;
+	struct v4l2_ctrl_handler ctrl_handler;
+	int channels[2];
+	s64 src_rate_off_prev;		/* Q31.32 */
+	s64 dst_rate_off_prev;		/* Q31.32 */
+	s64 src_rate_off_cur;		/* Q31.32 */
+	s64 dst_rate_off_cur;		/* Q31.32 */
+};
+
+struct asrc_m2m {
+	struct fsl_asrc_m2m_pdata pdata;
+	struct v4l2_device v4l2_dev;
+	struct v4l2_m2m_dev *m2m_dev;
+	struct video_device *dec_vdev;
+	struct mutex mlock; /* v4l2 ioctls serialization */
+	struct platform_device *pdev;
+};
+
+static u32 formats[] = {
+	V4L2_AUDIO_FMT_S8,
+	V4L2_AUDIO_FMT_S16_LE,
+	V4L2_AUDIO_FMT_U16_LE,
+	V4L2_AUDIO_FMT_S24_LE,
+	V4L2_AUDIO_FMT_S24_3LE,
+	V4L2_AUDIO_FMT_U24_LE,
+	V4L2_AUDIO_FMT_U24_3LE,
+	V4L2_AUDIO_FMT_S32_LE,
+	V4L2_AUDIO_FMT_U32_LE,
+	V4L2_AUDIO_FMT_S20_3LE,
+	V4L2_AUDIO_FMT_U20_3LE,
+	V4L2_AUDIO_FMT_FLOAT_LE,
+	V4L2_AUDIO_FMT_IEC958_SUBFRAME_LE,
+};
+
+#define NUM_FORMATS ARRAY_SIZE(formats)
+
+static const s64 asrc_v1_m2m_rates[] = {
+	5512, 8000, 11025, 12000, 16000,
+	22050, 24000, 32000, 44100,
+	48000, 64000, 88200, 96000,
+	128000, 176400, 192000,
+};
+
+static const s64 asrc_v2_m2m_rates[] = {
+	8000, 11025, 12000, 16000,
+	22050, 24000, 32000, 44100,
+	48000, 64000, 88200, 96000,
+	128000, 176400, 192000, 256000,
+	352800, 384000, 705600, 768000,
+};
+
+static u32 find_fourcc(snd_pcm_format_t format)
+{
+	snd_pcm_format_t fmt;
+	unsigned int k;
+
+	for (k = 0; k < NUM_FORMATS; k++) {
+		fmt = v4l2_fourcc_to_audfmt(formats[k]);
+		if (fmt == format)
+			return formats[k];
+	}
+
+	return 0;
+}
+
+static snd_pcm_format_t find_format(u32 fourcc)
+{
+	unsigned int k;
+
+	for (k = 0; k < NUM_FORMATS; k++) {
+		if (formats[k] == fourcc)
+			return v4l2_fourcc_to_audfmt(formats[k]);
+	}
+
+	return 0;
+}
+
+static int asrc_check_format(struct asrc_pair_m2m *pair_m2m, u8 dir, u32 format)
+{
+	struct asrc_m2m *m2m = pair_m2m->m2m;
+	struct fsl_asrc_m2m_pdata *pdata = &m2m->pdata;
+	struct fsl_asrc_pair *pair = pair_m2m->pair;
+	snd_pcm_format_t fmt;
+	u64 format_bit = 0;
+	int i;
+
+	for (i = 0; i < NUM_FORMATS; ++i) {
+		if (formats[i] == format) {
+			fmt = v4l2_fourcc_to_audfmt(formats[i]);
+			format_bit = pcm_format_to_bits(fmt);
+			break;
+		}
+	}
+
+	if (dir == IN && !(format_bit & pdata->fmt_in))
+		return find_fourcc(pair->sample_format[V4L_OUT]);
+	if (dir == OUT && !(format_bit & pdata->fmt_out))
+		return find_fourcc(pair->sample_format[V4L_CAP]);
+
+	return format;
+}
+
+static int asrc_check_channel(struct asrc_pair_m2m *pair_m2m, u8 dir, u32 channels)
+{
+	struct asrc_m2m *m2m = pair_m2m->m2m;
+	struct fsl_asrc_m2m_pdata *pdata = &m2m->pdata;
+	struct fsl_asrc_pair *pair = pair_m2m->pair;
+
+	if (channels < pdata->chan_min || channels > pdata->chan_max)
+		return pair->channels;
+
+	return channels;
+}
+
+static inline struct asrc_pair_m2m *asrc_m2m_fh_to_ctx(struct v4l2_fh *fh)
+{
+	return container_of(fh, struct asrc_pair_m2m, fh);
+}
+
+/**
+ * asrc_read_last_fifo: read all the remaining data from FIFO
+ *	@pair: Structure pointer of fsl_asrc_pair
+ *	@dma_vaddr: virtual address of capture buffer
+ *	@length: payload length of capture buffer
+ */
+static void asrc_read_last_fifo(struct fsl_asrc_pair *pair, void *dma_vaddr, u32 *length)
+{
+	struct fsl_asrc *asrc = pair->asrc;
+	enum asrc_pair_index index = pair->index;
+	u32 i, reg, size, t_size = 0, width;
+	u32 *reg32 = NULL;
+	u16 *reg16 = NULL;
+	u8  *reg24 = NULL;
+
+	width = snd_pcm_format_physical_width(pair->sample_format[V4L_CAP]);
+	if (width == 32)
+		reg32 = dma_vaddr + *length;
+	else if (width == 16)
+		reg16 = dma_vaddr + *length;
+	else
+		reg24 = dma_vaddr + *length;
+retry:
+	size = asrc->get_output_fifo_size(pair);
+	if (size + *length > ASRC_M2M_BUFFER_SIZE)
+		goto end;
+
+	for (i = 0; i < size * pair->channels; i++) {
+		regmap_read(asrc->regmap, asrc->get_fifo_addr(OUT, index), &reg);
+		if (reg32) {
+			*reg32++ = reg;
+		} else if (reg16) {
+			*reg16++ = (u16)reg;
+		} else {
+			*reg24++ = (u8)reg;
+			*reg24++ = (u8)(reg >> 8);
+			*reg24++ = (u8)(reg >> 16);
+		}
+	}
+	t_size += size;
+
+	/* In case there is data left in FIFO */
+	if (size)
+		goto retry;
+end:
+	/* Update payload length */
+	if (reg32)
+		*length += t_size * pair->channels * 4;
+	else if (reg16)
+		*length += t_size * pair->channels * 2;
+	else
+		*length += t_size * pair->channels * 3;
+}
+
+static int asrc_m2m_start_streaming(struct vb2_queue *q, unsigned int count)
+{
+	struct asrc_pair_m2m *pair_m2m = vb2_get_drv_priv(q);
+	struct fsl_asrc_pair *pair = pair_m2m->pair;
+	struct asrc_m2m *m2m = pair_m2m->m2m;
+	struct fsl_asrc *asrc = pair->asrc;
+	struct device *dev = &m2m->pdev->dev;
+	struct vb2_v4l2_buffer *buf;
+	bool request_flag = false;
+	int ret;
+
+	dev_dbg(dev, "Start streaming pair=%p, %d\n", pair, q->type);
+
+	ret = pm_runtime_get_sync(dev);
+	if (ret < 0) {
+		dev_err(dev, "Failed to power up asrc\n");
+		goto err_pm_runtime;
+	}
+
+	/* Request asrc pair/context */
+	if (!pair->req_pair) {
+		/* flag for error handler of this function */
+		request_flag = true;
+
+		ret = asrc->request_pair(pair->channels, pair);
+		if (ret) {
+			dev_err(dev, "failed to request pair: %d\n", ret);
+			goto err_request_pair;
+		}
+
+		ret = asrc->m2m_prepare(pair);
+		if (ret) {
+			dev_err(dev, "failed to start pair part one: %d\n", ret);
+			goto err_start_part_one;
+		}
+
+		pair->req_pair = true;
+	}
+
+	/* Request dma channels */
+	if (V4L2_TYPE_IS_OUTPUT(q->type)) {
+		pair->dma_chan[V4L_OUT] = asrc->get_dma_channel(pair, IN);
+		if (!pair->dma_chan[V4L_OUT]) {
+			dev_err(dev, "[ctx%d] failed to get input DMA channel\n", pair->index);
+			ret = -EBUSY;
+			goto err_dma_channel;
+		}
+	} else {
+		pair->dma_chan[V4L_CAP] = asrc->get_dma_channel(pair, OUT);
+		if (!pair->dma_chan[V4L_CAP]) {
+			dev_err(dev, "[ctx%d] failed to get output DMA channel\n", pair->index);
+			ret = -EBUSY;
+			goto err_dma_channel;
+		}
+	}
+
+	v4l2_m2m_update_start_streaming_state(pair_m2m->fh.m2m_ctx, q);
+
+	return 0;
+
+err_dma_channel:
+	if (request_flag && asrc->m2m_unprepare)
+		asrc->m2m_unprepare(pair);
+err_start_part_one:
+	if (request_flag)
+		asrc->release_pair(pair);
+err_request_pair:
+	pm_runtime_put_sync(dev);
+err_pm_runtime:
+	/* Release buffers */
+	if (V4L2_TYPE_IS_OUTPUT(q->type)) {
+		while ((buf = v4l2_m2m_src_buf_remove(pair_m2m->fh.m2m_ctx)))
+			v4l2_m2m_buf_done(buf, VB2_BUF_STATE_QUEUED);
+	} else {
+		while ((buf = v4l2_m2m_dst_buf_remove(pair_m2m->fh.m2m_ctx)))
+			v4l2_m2m_buf_done(buf, VB2_BUF_STATE_QUEUED);
+	}
+	return ret;
+}
+
+static void asrc_m2m_stop_streaming(struct vb2_queue *q)
+{
+	struct asrc_pair_m2m *pair_m2m = vb2_get_drv_priv(q);
+	struct asrc_m2m *m2m = pair_m2m->m2m;
+	struct fsl_asrc_pair *pair = pair_m2m->pair;
+	struct fsl_asrc *asrc = pair->asrc;
+	struct device *dev = &m2m->pdev->dev;
+
+	dev_dbg(dev, "Stop streaming pair=%p, %d\n", pair, q->type);
+
+	v4l2_m2m_update_stop_streaming_state(pair_m2m->fh.m2m_ctx, q);
+
+	/* Stop & release pair/context */
+	if (asrc->m2m_stop)
+		asrc->m2m_stop(pair);
+
+	if (pair->req_pair) {
+		if (asrc->m2m_unprepare)
+			asrc->m2m_unprepare(pair);
+		asrc->release_pair(pair);
+		pair->req_pair = false;
+	}
+
+	/* Release dma channel */
+	if (V4L2_TYPE_IS_OUTPUT(q->type)) {
+		if (pair->dma_chan[V4L_OUT])
+			dma_release_channel(pair->dma_chan[V4L_OUT]);
+	} else {
+		if (pair->dma_chan[V4L_CAP])
+			dma_release_channel(pair->dma_chan[V4L_CAP]);
+	}
+
+	pm_runtime_put_sync(dev);
+}
+
+static int asrc_m2m_queue_setup(struct vb2_queue *q,
+				unsigned int *num_buffers, unsigned int *num_planes,
+				unsigned int sizes[], struct device *alloc_devs[])
+{
+	struct asrc_pair_m2m *pair_m2m = vb2_get_drv_priv(q);
+	struct fsl_asrc_pair *pair = pair_m2m->pair;
+	u32 size;
+
+	/*
+	 * The capture buffer size depends on output buffer size
+	 * and the convert ratio.
+	 *
+	 * Here just use a fix length for capture and output buffer.
+	 * User need to care about it.
+	 */
+	if (V4L2_TYPE_IS_OUTPUT(q->type))
+		size = pair->buf_len[V4L_OUT];
+	else
+		size = pair->buf_len[V4L_CAP];
+
+	if (*num_planes)
+		return sizes[0] < size ? -EINVAL : 0;
+
+	*num_planes = 1;
+	sizes[0] = size;
+
+	return 0;
+}
+
+static void asrc_m2m_buf_queue(struct vb2_buffer *vb)
+{
+	struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
+	struct asrc_pair_m2m *pair_m2m = vb2_get_drv_priv(vb->vb2_queue);
+
+	/* queue buffer */
+	v4l2_m2m_buf_queue(pair_m2m->fh.m2m_ctx, vbuf);
+}
+
+static const struct vb2_ops asrc_m2m_qops = {
+	.wait_prepare		= vb2_ops_wait_prepare,
+	.wait_finish		= vb2_ops_wait_finish,
+	.start_streaming	= asrc_m2m_start_streaming,
+	.stop_streaming		= asrc_m2m_stop_streaming,
+	.queue_setup		= asrc_m2m_queue_setup,
+	.buf_queue		= asrc_m2m_buf_queue,
+};
+
+/* Init video buffer queue for src and dst. */
+static int asrc_m2m_queue_init(void *priv, struct vb2_queue *src_vq,
+			       struct vb2_queue *dst_vq)
+{
+	struct asrc_pair_m2m *pair_m2m = priv;
+	struct asrc_m2m *m2m = pair_m2m->m2m;
+	int ret;
+
+	src_vq->type = V4L2_BUF_TYPE_AUDIO_OUTPUT;
+	src_vq->io_modes = VB2_MMAP | VB2_DMABUF;
+	src_vq->drv_priv = pair_m2m;
+	src_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
+	src_vq->ops = &asrc_m2m_qops;
+	src_vq->mem_ops = &vb2_dma_contig_memops;
+	src_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
+	src_vq->lock = &m2m->mlock;
+	src_vq->dev = &m2m->pdev->dev;
+	src_vq->min_buffers_needed = 1;
+
+	ret = vb2_queue_init(src_vq);
+	if (ret)
+		return ret;
+
+	dst_vq->type = V4L2_BUF_TYPE_AUDIO_CAPTURE;
+	dst_vq->io_modes = VB2_MMAP | VB2_DMABUF;
+	dst_vq->drv_priv = pair_m2m;
+	dst_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
+	dst_vq->ops = &asrc_m2m_qops;
+	dst_vq->mem_ops = &vb2_dma_contig_memops;
+	dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
+	dst_vq->lock = &m2m->mlock;
+	dst_vq->dev = &m2m->pdev->dev;
+	dst_vq->min_buffers_needed = 1;
+
+	ret = vb2_queue_init(dst_vq);
+	return ret;
+}
+
+static int asrc_m2m_op_s_ctrl(struct v4l2_ctrl *ctrl)
+{
+	struct asrc_pair_m2m *pair_m2m =
+		container_of(ctrl->handler, struct asrc_pair_m2m, ctrl_handler);
+	struct fsl_asrc_pair *pair = pair_m2m->pair;
+	int ret = 0;
+
+	switch (ctrl->id) {
+	case V4L2_CID_M2M_AUDIO_SOURCE_RATE:
+		pair->rate[V4L_OUT] = ctrl->qmenu_int[ctrl->val];
+		break;
+	case V4L2_CID_M2M_AUDIO_DEST_RATE:
+		pair->rate[V4L_CAP] = ctrl->qmenu_int[ctrl->val];
+		break;
+	case V4L2_CID_M2M_AUDIO_SOURCE_RATE_OFFSET:
+		pair_m2m->src_rate_off_cur = *ctrl->p_new.p_s64;
+		break;
+	case V4L2_CID_M2M_AUDIO_DEST_RATE_OFFSET:
+		pair_m2m->dst_rate_off_cur = *ctrl->p_new.p_s64;
+		break;
+	default:
+		ret = -EINVAL;
+		break;
+	}
+
+	return ret;
+}
+
+static const struct v4l2_ctrl_ops asrc_m2m_ctrl_ops = {
+	.s_ctrl = asrc_m2m_op_s_ctrl,
+};
+
+/* system callback for open() */
+static int asrc_m2m_open(struct file *file)
+{
+	struct asrc_m2m *m2m = video_drvdata(file);
+	struct fsl_asrc *asrc = m2m->pdata.asrc;
+	struct video_device *vdev = video_devdata(file);
+	struct fsl_asrc_pair *pair;
+	struct asrc_pair_m2m *pair_m2m;
+	int ret = 0;
+
+	if (mutex_lock_interruptible(&m2m->mlock))
+		return -ERESTARTSYS;
+
+	pair = kzalloc(sizeof(*pair) + asrc->pair_priv_size, GFP_KERNEL);
+	if (!pair) {
+		ret = -ENOMEM;
+		goto err_alloc_pair;
+	}
+
+	pair_m2m = kzalloc(sizeof(*pair_m2m), GFP_KERNEL);
+	if (!pair_m2m) {
+		ret = -ENOMEM;
+		goto err_alloc_pair_m2m;
+	}
+
+	pair->private = (void *)pair + sizeof(struct fsl_asrc_pair);
+	pair->asrc = asrc;
+
+	pair->buf_len[V4L_OUT] = ASRC_M2M_BUFFER_SIZE;
+	pair->buf_len[V4L_CAP] = ASRC_M2M_BUFFER_SIZE;
+
+	pair->channels = 2;
+	pair->rate[V4L_OUT] = 8000;
+	pair->rate[V4L_CAP] = 8000;
+	pair->sample_format[V4L_OUT] = SNDRV_PCM_FORMAT_S16_LE;
+	pair->sample_format[V4L_CAP] = SNDRV_PCM_FORMAT_S16_LE;
+
+	init_completion(&pair->complete[V4L_OUT]);
+	init_completion(&pair->complete[V4L_CAP]);
+
+	v4l2_fh_init(&pair_m2m->fh, vdev);
+	v4l2_fh_add(&pair_m2m->fh);
+	file->private_data = &pair_m2m->fh;
+
+	pair_m2m->pair = pair;
+	pair_m2m->m2m = m2m;
+	/* m2m context init */
+	pair_m2m->fh.m2m_ctx = v4l2_m2m_ctx_init(m2m->m2m_dev, pair_m2m,
+						 asrc_m2m_queue_init);
+	if (IS_ERR(pair_m2m->fh.m2m_ctx)) {
+		ret = PTR_ERR(pair_m2m->fh.m2m_ctx);
+		goto err_ctx_init;
+	}
+
+	v4l2_ctrl_handler_init(&pair_m2m->ctrl_handler, 4);
+
+	if (m2m->pdata.rate_min == 5512) {
+		v4l2_ctrl_new_int_menu(&pair_m2m->ctrl_handler, &asrc_m2m_ctrl_ops,
+				       V4L2_CID_M2M_AUDIO_SOURCE_RATE,
+				       ARRAY_SIZE(asrc_v1_m2m_rates) - 1, 1, asrc_v1_m2m_rates);
+		v4l2_ctrl_new_int_menu(&pair_m2m->ctrl_handler, &asrc_m2m_ctrl_ops,
+				       V4L2_CID_M2M_AUDIO_DEST_RATE,
+				       ARRAY_SIZE(asrc_v1_m2m_rates) - 1, 1, asrc_v1_m2m_rates);
+	} else {
+		v4l2_ctrl_new_int_menu(&pair_m2m->ctrl_handler, &asrc_m2m_ctrl_ops,
+				       V4L2_CID_M2M_AUDIO_SOURCE_RATE,
+				       ARRAY_SIZE(asrc_v2_m2m_rates) - 1, 0, asrc_v2_m2m_rates);
+		v4l2_ctrl_new_int_menu(&pair_m2m->ctrl_handler, &asrc_m2m_ctrl_ops,
+				       V4L2_CID_M2M_AUDIO_DEST_RATE,
+				       ARRAY_SIZE(asrc_v2_m2m_rates) - 1, 0, asrc_v2_m2m_rates);
+	}
+
+	v4l2_ctrl_new_std(&pair_m2m->ctrl_handler, &asrc_m2m_ctrl_ops,
+			  V4L2_CID_M2M_AUDIO_SOURCE_RATE_OFFSET,
+			  0xFFFFFF0000000000, 0x7fffffffff, 1, 0);
+	v4l2_ctrl_new_std(&pair_m2m->ctrl_handler, &asrc_m2m_ctrl_ops,
+			  V4L2_CID_M2M_AUDIO_DEST_RATE_OFFSET,
+			  0xFFFFFF0000000000, 0x7fffffffff, 1, 0);
+
+	if (pair_m2m->ctrl_handler.error) {
+		ret = pair_m2m->ctrl_handler.error;
+		v4l2_ctrl_handler_free(&pair_m2m->ctrl_handler);
+		goto err_ctrl_handler;
+	}
+
+	pair_m2m->fh.ctrl_handler = &pair_m2m->ctrl_handler;
+
+	mutex_unlock(&m2m->mlock);
+
+	return 0;
+
+err_ctrl_handler:
+	v4l2_m2m_ctx_release(pair_m2m->fh.m2m_ctx);
+err_ctx_init:
+	v4l2_fh_del(&pair_m2m->fh);
+	v4l2_fh_exit(&pair_m2m->fh);
+	kfree(pair_m2m);
+err_alloc_pair_m2m:
+	kfree(pair);
+err_alloc_pair:
+	mutex_unlock(&m2m->mlock);
+	return ret;
+}
+
+static int asrc_m2m_release(struct file *file)
+{
+	struct asrc_m2m *m2m = video_drvdata(file);
+	struct asrc_pair_m2m *pair_m2m = asrc_m2m_fh_to_ctx(file->private_data);
+	struct fsl_asrc_pair *pair = pair_m2m->pair;
+
+	mutex_lock(&m2m->mlock);
+	v4l2_ctrl_handler_free(&pair_m2m->ctrl_handler);
+	v4l2_m2m_ctx_release(pair_m2m->fh.m2m_ctx);
+	v4l2_fh_del(&pair_m2m->fh);
+	v4l2_fh_exit(&pair_m2m->fh);
+	kfree(pair_m2m);
+	kfree(pair);
+	mutex_unlock(&m2m->mlock);
+
+	return 0;
+}
+
+static const struct v4l2_file_operations asrc_m2m_fops = {
+	.owner          = THIS_MODULE,
+	.open           = asrc_m2m_open,
+	.release        = asrc_m2m_release,
+	.poll           = v4l2_m2m_fop_poll,
+	.unlocked_ioctl = video_ioctl2,
+	.mmap           = v4l2_m2m_fop_mmap,
+};
+
+static int asrc_m2m_querycap(struct file *file, void *priv,
+			     struct v4l2_capability *cap)
+{
+	strscpy(cap->driver, "imx asrc m2m", sizeof(cap->driver));
+	strscpy(cap->card, "imx asrc m2m", sizeof(cap->card));
+	cap->device_caps = V4L2_CAP_STREAMING | V4L2_CAP_AUDIO_M2M;
+
+	return 0;
+}
+
+static int enum_fmt(struct v4l2_fmtdesc *f, u64 fmtbit)
+{
+	snd_pcm_format_t fmt;
+	int i, num;
+
+	num = 0;
+
+	for (i = 0; i < NUM_FORMATS; ++i) {
+		fmt = v4l2_fourcc_to_audfmt(formats[i]);
+		if (pcm_format_to_bits(fmt) & fmtbit) {
+			if (num == f->index)
+				break;
+			/*
+			 * Correct type but haven't reached our index yet,
+			 * just increment per-type index
+			 */
+			++num;
+		}
+	}
+
+	if (i < NUM_FORMATS) {
+		/* Format found */
+		f->pixelformat = formats[i];
+		return 0;
+	}
+
+	return -EINVAL;
+}
+
+static int asrc_m2m_enum_fmt_aud_cap(struct file *file, void *fh,
+				     struct v4l2_fmtdesc *f)
+{
+	struct asrc_pair_m2m *pair_m2m = asrc_m2m_fh_to_ctx(fh);
+	struct asrc_m2m *m2m = pair_m2m->m2m;
+
+	return enum_fmt(f, m2m->pdata.fmt_out);
+}
+
+static int asrc_m2m_enum_fmt_aud_out(struct file *file, void *fh,
+				     struct v4l2_fmtdesc *f)
+{
+	struct asrc_pair_m2m *pair_m2m = asrc_m2m_fh_to_ctx(fh);
+	struct asrc_m2m *m2m = pair_m2m->m2m;
+
+	return enum_fmt(f, m2m->pdata.fmt_in);
+}
+
+static int asrc_m2m_g_fmt_aud_cap(struct file *file, void *fh,
+				  struct v4l2_format *f)
+{
+	struct asrc_pair_m2m *pair_m2m = asrc_m2m_fh_to_ctx(fh);
+	struct fsl_asrc_pair *pair = pair_m2m->pair;
+
+	f->fmt.audio.channels = pair->channels;
+	f->fmt.audio.buffersize = pair->buf_len[V4L_CAP];
+	f->fmt.audio.audioformat = find_fourcc(pair->sample_format[V4L_CAP]);
+
+	return 0;
+}
+
+static int asrc_m2m_g_fmt_aud_out(struct file *file, void *fh,
+				  struct v4l2_format *f)
+{
+	struct asrc_pair_m2m *pair_m2m = asrc_m2m_fh_to_ctx(fh);
+	struct fsl_asrc_pair *pair = pair_m2m->pair;
+
+	f->fmt.audio.channels = pair->channels;
+	f->fmt.audio.buffersize = pair->buf_len[V4L_OUT];
+	f->fmt.audio.audioformat = find_fourcc(pair->sample_format[V4L_OUT]);
+
+	return 0;
+}
+
+/* output for asrc */
+static int asrc_m2m_s_fmt_aud_cap(struct file *file, void *fh,
+				  struct v4l2_format *f)
+{
+	struct asrc_pair_m2m *pair_m2m = asrc_m2m_fh_to_ctx(fh);
+	struct fsl_asrc_pair *pair = pair_m2m->pair;
+	struct asrc_m2m *m2m = pair_m2m->m2m;
+	struct device *dev = &m2m->pdev->dev;
+
+	f->fmt.audio.audioformat = asrc_check_format(pair_m2m, OUT, f->fmt.audio.audioformat);
+	f->fmt.audio.channels = asrc_check_channel(pair_m2m, OUT, f->fmt.audio.channels);
+
+	if (pair_m2m->channels[V4L_CAP] > 0 &&
+	    pair_m2m->channels[V4L_CAP] != f->fmt.audio.channels) {
+		dev_err(dev, "channels don't match for cap and out\n");
+		return -EINVAL;
+	}
+
+	pair_m2m->channels[V4L_CAP] = f->fmt.audio.channels;
+	pair->channels = f->fmt.audio.channels;
+	pair->sample_format[V4L_CAP] = find_format(f->fmt.audio.audioformat);
+
+	return 0;
+}
+
+/* input for asrc */
+static int asrc_m2m_s_fmt_aud_out(struct file *file, void *fh,
+				  struct v4l2_format *f)
+{
+	struct asrc_pair_m2m *pair_m2m = asrc_m2m_fh_to_ctx(fh);
+	struct fsl_asrc_pair *pair = pair_m2m->pair;
+	struct asrc_m2m *m2m = pair_m2m->m2m;
+	struct device *dev = &m2m->pdev->dev;
+
+	f->fmt.audio.audioformat = asrc_check_format(pair_m2m, IN, f->fmt.audio.audioformat);
+	f->fmt.audio.channels = asrc_check_channel(pair_m2m, IN, f->fmt.audio.channels);
+	if (pair_m2m->channels[V4L_OUT] > 0 &&
+	    pair_m2m->channels[V4L_OUT] != f->fmt.audio.channels) {
+		dev_err(dev, "channels don't match for cap and out\n");
+		return -EINVAL;
+	}
+
+	pair_m2m->channels[V4L_OUT] = f->fmt.audio.channels;
+	pair->channels = f->fmt.audio.channels;
+	pair->sample_format[V4L_OUT] = find_format(f->fmt.audio.audioformat);
+
+	return 0;
+}
+
+static int asrc_m2m_try_fmt_audio_cap(struct file *file, void *fh,
+				      struct v4l2_format *f)
+{
+	struct asrc_pair_m2m *pair_m2m = asrc_m2m_fh_to_ctx(fh);
+
+	f->fmt.audio.audioformat = asrc_check_format(pair_m2m, OUT, f->fmt.audio.audioformat);
+	f->fmt.audio.channels = asrc_check_channel(pair_m2m, OUT, f->fmt.audio.channels);
+
+	return 0;
+}
+
+static int asrc_m2m_try_fmt_audio_out(struct file *file, void *fh,
+				      struct v4l2_format *f)
+{
+	struct asrc_pair_m2m *pair_m2m = asrc_m2m_fh_to_ctx(fh);
+
+	f->fmt.audio.audioformat = asrc_check_format(pair_m2m, IN, f->fmt.audio.audioformat);
+	f->fmt.audio.channels = asrc_check_channel(pair_m2m, IN, f->fmt.audio.channels);
+
+	return 0;
+}
+
+static const struct v4l2_ioctl_ops asrc_m2m_ioctl_ops = {
+	.vidioc_querycap		= asrc_m2m_querycap,
+
+	.vidioc_enum_fmt_audio_cap	= asrc_m2m_enum_fmt_aud_cap,
+	.vidioc_enum_fmt_audio_out	= asrc_m2m_enum_fmt_aud_out,
+
+	.vidioc_g_fmt_audio_cap		= asrc_m2m_g_fmt_aud_cap,
+	.vidioc_g_fmt_audio_out		= asrc_m2m_g_fmt_aud_out,
+
+	.vidioc_s_fmt_audio_cap		= asrc_m2m_s_fmt_aud_cap,
+	.vidioc_s_fmt_audio_out		= asrc_m2m_s_fmt_aud_out,
+
+	.vidioc_try_fmt_audio_cap	= asrc_m2m_try_fmt_audio_cap,
+	.vidioc_try_fmt_audio_out	= asrc_m2m_try_fmt_audio_out,
+
+	.vidioc_qbuf			= v4l2_m2m_ioctl_qbuf,
+	.vidioc_dqbuf			= v4l2_m2m_ioctl_dqbuf,
+
+	.vidioc_create_bufs		= v4l2_m2m_ioctl_create_bufs,
+	.vidioc_prepare_buf		= v4l2_m2m_ioctl_prepare_buf,
+	.vidioc_reqbufs			= v4l2_m2m_ioctl_reqbufs,
+	.vidioc_querybuf		= v4l2_m2m_ioctl_querybuf,
+	.vidioc_streamon		= v4l2_m2m_ioctl_streamon,
+	.vidioc_streamoff		= v4l2_m2m_ioctl_streamoff,
+	.vidioc_subscribe_event		= v4l2_ctrl_subscribe_event,
+	.vidioc_unsubscribe_event	= v4l2_event_unsubscribe,
+};
+
+/* dma complete callback */
+static void asrc_input_dma_callback(void *data)
+{
+	struct fsl_asrc_pair *pair = (struct fsl_asrc_pair *)data;
+
+	complete(&pair->complete[V4L_OUT]);
+}
+
+/* dma complete callback */
+static void asrc_output_dma_callback(void *data)
+{
+	struct fsl_asrc_pair *pair = (struct fsl_asrc_pair *)data;
+
+	complete(&pair->complete[V4L_CAP]);
+}
+
+/* config dma channel */
+static int asrc_dmaconfig(struct asrc_pair_m2m *pair_m2m,
+			  struct dma_chan *chan,
+			  u32 dma_addr, dma_addr_t buf_addr, u32 buf_len,
+			  int dir, int width)
+{
+	struct fsl_asrc_pair *pair = pair_m2m->pair;
+	struct fsl_asrc *asrc = pair->asrc;
+	struct asrc_m2m *m2m = pair_m2m->m2m;
+	struct device *dev = &m2m->pdev->dev;
+	struct dma_slave_config slave_config;
+	enum dma_slave_buswidth buswidth;
+	unsigned int sg_len, max_period_size;
+	struct scatterlist *sg;
+	int ret, i;
+
+	switch (width) {
+	case 8:
+		buswidth = DMA_SLAVE_BUSWIDTH_1_BYTE;
+		break;
+	case 16:
+		buswidth = DMA_SLAVE_BUSWIDTH_2_BYTES;
+		break;
+	case 24:
+		buswidth = DMA_SLAVE_BUSWIDTH_3_BYTES;
+		break;
+	case 32:
+		buswidth = DMA_SLAVE_BUSWIDTH_4_BYTES;
+		break;
+	default:
+		dev_err(dev, "invalid word width\n");
+		return -EINVAL;
+	}
+
+	memset(&slave_config, 0, sizeof(slave_config));
+	if (dir == V4L_OUT) {
+		slave_config.direction = DMA_MEM_TO_DEV;
+		slave_config.dst_addr = dma_addr;
+		slave_config.dst_addr_width = buswidth;
+		slave_config.dst_maxburst = asrc->m2m_get_maxburst(IN, pair);
+	} else {
+		slave_config.direction = DMA_DEV_TO_MEM;
+		slave_config.src_addr = dma_addr;
+		slave_config.src_addr_width = buswidth;
+		slave_config.src_maxburst = asrc->m2m_get_maxburst(OUT, pair);
+	}
+
+	ret = dmaengine_slave_config(chan, &slave_config);
+	if (ret) {
+		dev_err(dev, "failed to config dmaengine for %s task: %d\n",
+			DIR_STR(dir), ret);
+		return -EINVAL;
+	}
+
+	max_period_size = rounddown(ASRC_M2M_PERIOD_SIZE, width * pair->channels / 8);
+	/* scatter gather mode */
+	sg_len = buf_len / max_period_size;
+	if (buf_len % max_period_size)
+		sg_len += 1;
+
+	sg = kmalloc_array(sg_len, sizeof(*sg), GFP_KERNEL);
+	if (!sg)
+		return -ENOMEM;
+
+	sg_init_table(sg, sg_len);
+	for (i = 0; i < (sg_len - 1); i++) {
+		sg_dma_address(&sg[i]) = buf_addr + i * max_period_size;
+		sg_dma_len(&sg[i]) = max_period_size;
+	}
+	sg_dma_address(&sg[i]) = buf_addr + i * max_period_size;
+	sg_dma_len(&sg[i]) = buf_len - i * max_period_size;
+
+	pair->desc[dir] = dmaengine_prep_slave_sg(chan, sg, sg_len,
+						  slave_config.direction,
+						  DMA_PREP_INTERRUPT);
+	kfree(sg);
+	if (!pair->desc[dir]) {
+		dev_err(dev, "failed to prepare dmaengine for %s task\n", DIR_STR(dir));
+		return -EINVAL;
+	}
+
+	pair->desc[dir]->callback = ASRC_xPUT_DMA_CALLBACK(dir);
+	pair->desc[dir]->callback_param = pair;
+
+	return 0;
+}
+
+static void asrc_m2m_set_ratio_mod(struct asrc_pair_m2m *pair_m2m)
+{
+	struct fsl_asrc_pair *pair = pair_m2m->pair;
+	struct fsl_asrc *asrc = pair->asrc;
+	s32 src_rate_int, dst_rate_int;
+	s64 src_rate_frac;
+	s64 dst_rate_frac;
+	u64 src_rate, dst_rate;
+	u64 ratio_pre, ratio_cur;
+	s64 ratio_diff;
+
+	if (!asrc->m2m_set_ratio_mod)
+		return;
+
+	if (pair_m2m->src_rate_off_cur == pair_m2m->src_rate_off_prev &&
+	    pair_m2m->dst_rate_off_cur == pair_m2m->dst_rate_off_prev)
+		return;
+
+	/*
+	 * use maximum rate 768kHz as limitation, then we can shift right 21 bit for
+	 * division
+	 */
+	src_rate_int = pair->rate[V4L_OUT];
+	src_rate_frac = pair_m2m->src_rate_off_prev;
+
+	src_rate = ((s64)src_rate_int << 32) + src_rate_frac;
+
+	dst_rate_int = pair->rate[V4L_CAP];
+	dst_rate_frac = pair_m2m->dst_rate_off_prev;
+
+	dst_rate = ((s64)dst_rate_int << 32) + dst_rate_frac;
+	dst_rate >>= 21;
+	do_div(src_rate, dst_rate);
+	ratio_pre = src_rate;
+
+	src_rate_frac = pair_m2m->src_rate_off_cur;
+	src_rate = ((s64)src_rate_int << 32) + src_rate_frac;
+
+	dst_rate_frac = pair_m2m->dst_rate_off_cur;
+	dst_rate = ((s64)dst_rate_int << 32) + dst_rate_frac;
+	dst_rate >>= 21;
+	do_div(src_rate, dst_rate);
+	ratio_cur = src_rate;
+
+	ratio_diff = ratio_cur - ratio_pre;
+	asrc->m2m_set_ratio_mod(pair, ratio_diff << 10);
+
+	pair_m2m->src_rate_off_prev = pair_m2m->src_rate_off_cur;
+	pair_m2m->dst_rate_off_prev = pair_m2m->dst_rate_off_cur;
+}
+
+/* main function of converter */
+static void asrc_m2m_device_run(void *priv)
+{
+	struct asrc_pair_m2m *pair_m2m = priv;
+	struct fsl_asrc_pair *pair = pair_m2m->pair;
+	struct asrc_m2m *m2m = pair_m2m->m2m;
+	struct fsl_asrc *asrc = pair->asrc;
+	struct device *dev = &m2m->pdev->dev;
+	enum asrc_pair_index index = pair->index;
+	struct vb2_v4l2_buffer *src_buf, *dst_buf;
+	unsigned int out_buf_len;
+	unsigned int cap_dma_len;
+	unsigned int width;
+	u32 fifo_addr;
+	int ret;
+
+	/* set ratio mod */
+	asrc_m2m_set_ratio_mod(pair_m2m);
+
+	src_buf = v4l2_m2m_next_src_buf(pair_m2m->fh.m2m_ctx);
+	dst_buf = v4l2_m2m_next_dst_buf(pair_m2m->fh.m2m_ctx);
+
+	width = snd_pcm_format_physical_width(pair->sample_format[V4L_OUT]);
+	fifo_addr = asrc->paddr + asrc->get_fifo_addr(IN, index);
+	out_buf_len = vb2_get_plane_payload(&src_buf->vb2_buf, 0);
+	if (out_buf_len < width * pair->channels / 8 ||
+	    out_buf_len > ASRC_M2M_BUFFER_SIZE ||
+	    out_buf_len % (width * pair->channels / 8)) {
+		dev_err(dev, "out buffer size is error: [%d]\n", out_buf_len);
+		goto end;
+	}
+
+	/* dma config for output dma channel */
+	ret = asrc_dmaconfig(pair_m2m,
+			     pair->dma_chan[V4L_OUT],
+			     fifo_addr,
+			     vb2_dma_contig_plane_dma_addr(&src_buf->vb2_buf, 0),
+			     out_buf_len, V4L_OUT, width);
+	if (ret) {
+		dev_err(dev, "out dma config error\n");
+		goto end;
+	}
+
+	width = snd_pcm_format_physical_width(pair->sample_format[V4L_CAP]);
+	fifo_addr = asrc->paddr + asrc->get_fifo_addr(OUT, index);
+	cap_dma_len = asrc->m2m_calc_out_len(pair, out_buf_len);
+	if (cap_dma_len > 0 && cap_dma_len <= ASRC_M2M_BUFFER_SIZE) {
+		/* dma config for capture dma channel */
+		ret = asrc_dmaconfig(pair_m2m,
+				     pair->dma_chan[V4L_CAP],
+				     fifo_addr,
+				     vb2_dma_contig_plane_dma_addr(&dst_buf->vb2_buf, 0),
+				     cap_dma_len, V4L_CAP, width);
+		if (ret) {
+			dev_err(dev, "cap dma config error\n");
+			goto end;
+		}
+	} else if (cap_dma_len > ASRC_M2M_BUFFER_SIZE) {
+		dev_err(dev, "cap buffer size error\n");
+		goto end;
+	}
+
+	reinit_completion(&pair->complete[V4L_OUT]);
+	reinit_completion(&pair->complete[V4L_CAP]);
+
+	/* Submit DMA request */
+	dmaengine_submit(pair->desc[V4L_OUT]);
+	dma_async_issue_pending(pair->desc[V4L_OUT]->chan);
+	if (cap_dma_len > 0) {
+		dmaengine_submit(pair->desc[V4L_CAP]);
+		dma_async_issue_pending(pair->desc[V4L_CAP]->chan);
+	}
+
+	asrc->m2m_start(pair);
+
+	if (!wait_for_completion_interruptible_timeout(&pair->complete[V4L_OUT], 10 * HZ)) {
+		dev_err(dev, "out DMA task timeout\n");
+		goto end;
+	}
+
+	if (cap_dma_len > 0) {
+		if (!wait_for_completion_interruptible_timeout(&pair->complete[V4L_CAP], 10 * HZ)) {
+			dev_err(dev, "cap DMA task timeout\n");
+			goto end;
+		}
+	}
+
+	/* read the last words from FIFO */
+	asrc_read_last_fifo(pair, vb2_plane_vaddr(&dst_buf->vb2_buf, 0), &cap_dma_len);
+	/* update payload length for capture */
+	vb2_set_plane_payload(&dst_buf->vb2_buf, 0, cap_dma_len);
+
+end:
+	src_buf = v4l2_m2m_src_buf_remove(pair_m2m->fh.m2m_ctx);
+	dst_buf = v4l2_m2m_dst_buf_remove(pair_m2m->fh.m2m_ctx);
+
+	v4l2_m2m_buf_done(src_buf, VB2_BUF_STATE_DONE);
+	v4l2_m2m_buf_done(dst_buf, VB2_BUF_STATE_DONE);
+
+	v4l2_m2m_job_finish(m2m->m2m_dev, pair_m2m->fh.m2m_ctx);
+}
+
+static int asrc_m2m_job_ready(void *priv)
+{
+	struct asrc_pair_m2m *pair_m2m = priv;
+
+	if (v4l2_m2m_num_src_bufs_ready(pair_m2m->fh.m2m_ctx) > 0 &&
+	    v4l2_m2m_num_dst_bufs_ready(pair_m2m->fh.m2m_ctx) > 0) {
+		return 1;
+	}
+
+	return 0;
+}
+
+static const struct v4l2_m2m_ops asrc_m2m_ops = {
+	.job_ready = asrc_m2m_job_ready,
+	.device_run = asrc_m2m_device_run,
+};
+
+static int asrc_m2m_probe(struct platform_device *pdev)
+{
+	struct fsl_asrc_m2m_pdata *data = pdev->dev.platform_data;
+	struct device *dev = &pdev->dev;
+	struct asrc_m2m *m2m;
+	int ret;
+
+	m2m = devm_kzalloc(dev, sizeof(struct asrc_m2m), GFP_KERNEL);
+	if (!m2m)
+		return -ENOMEM;
+
+	m2m->pdata = *data;
+	m2m->pdev = pdev;
+
+	ret = v4l2_device_register(dev, &m2m->v4l2_dev);
+	if (ret) {
+		dev_err(dev, "failed to register v4l2 device\n");
+		goto err_register;
+	}
+
+	m2m->m2m_dev = v4l2_m2m_init(&asrc_m2m_ops);
+	if (IS_ERR(m2m->m2m_dev)) {
+		dev_err(dev, "failed to register v4l2 device\n");
+		ret = PTR_ERR(m2m->m2m_dev);
+		goto err_m2m;
+	}
+
+	m2m->dec_vdev = video_device_alloc();
+	if (!m2m->dec_vdev) {
+		dev_err(dev, "failed to register v4l2 device\n");
+		ret = -ENOMEM;
+		goto err_vdev_alloc;
+	}
+
+	mutex_init(&m2m->mlock);
+
+	m2m->dec_vdev->fops = &asrc_m2m_fops;
+	m2m->dec_vdev->ioctl_ops = &asrc_m2m_ioctl_ops;
+	m2m->dec_vdev->minor = -1;
+	m2m->dec_vdev->release = video_device_release;
+	m2m->dec_vdev->lock = &m2m->mlock; /* lock for ioctl serialization */
+	m2m->dec_vdev->v4l2_dev = &m2m->v4l2_dev;
+	m2m->dec_vdev->vfl_dir = VFL_DIR_M2M;
+	m2m->dec_vdev->device_caps = V4L2_CAP_STREAMING | V4L2_CAP_AUDIO_M2M;
+
+	ret = video_register_device(m2m->dec_vdev, VFL_TYPE_AUDIO, -1);
+	if (ret) {
+		dev_err(dev, "failed to register video device\n");
+		goto err_vdev_register;
+	}
+
+	video_set_drvdata(m2m->dec_vdev, m2m);
+	platform_set_drvdata(pdev, m2m);
+	pm_runtime_enable(&pdev->dev);
+
+	return 0;
+
+err_vdev_register:
+	video_device_release(m2m->dec_vdev);
+err_vdev_alloc:
+	v4l2_m2m_release(m2m->m2m_dev);
+err_m2m:
+	v4l2_device_unregister(&m2m->v4l2_dev);
+err_register:
+	return ret;
+}
+
+static void asrc_m2m_remove(struct platform_device *pdev)
+{
+	struct asrc_m2m *m2m = platform_get_drvdata(pdev);
+
+	pm_runtime_disable(&pdev->dev);
+	video_unregister_device(m2m->dec_vdev);
+	video_device_release(m2m->dec_vdev);
+	v4l2_m2m_release(m2m->m2m_dev);
+	v4l2_device_unregister(&m2m->v4l2_dev);
+}
+
+#ifdef CONFIG_PM_SLEEP
+/* suspend callback for m2m */
+static int asrc_m2m_suspend(struct device *dev)
+{
+	struct asrc_m2m *m2m = dev_get_drvdata(dev);
+	struct fsl_asrc *asrc = m2m->pdata.asrc;
+	struct fsl_asrc_pair *pair;
+	unsigned long lock_flags;
+	int i;
+
+	for (i = 0; i < PAIR_CTX_NUM; i++) {
+		spin_lock_irqsave(&asrc->lock, lock_flags);
+		pair = asrc->pair[i];
+		if (!pair || !pair->req_pair) {
+			spin_unlock_irqrestore(&asrc->lock, lock_flags);
+			continue;
+		}
+		if (!completion_done(&pair->complete[V4L_OUT])) {
+			if (pair->dma_chan[V4L_OUT])
+				dmaengine_terminate_all(pair->dma_chan[V4L_OUT]);
+			asrc_input_dma_callback((void *)pair);
+		}
+		if (!completion_done(&pair->complete[V4L_CAP])) {
+			if (pair->dma_chan[V4L_CAP])
+				dmaengine_terminate_all(pair->dma_chan[V4L_CAP]);
+			asrc_output_dma_callback((void *)pair);
+		}
+
+		if (asrc->m2m_pair_suspend)
+			asrc->m2m_pair_suspend(pair);
+
+		spin_unlock_irqrestore(&asrc->lock, lock_flags);
+	}
+
+	return 0;
+}
+
+static int asrc_m2m_resume(struct device *dev)
+{
+	struct asrc_m2m *m2m = dev_get_drvdata(dev);
+	struct fsl_asrc *asrc = m2m->pdata.asrc;
+	struct fsl_asrc_pair *pair;
+	unsigned long lock_flags;
+	int i;
+
+	for (i = 0; i < PAIR_CTX_NUM; i++) {
+		spin_lock_irqsave(&asrc->lock, lock_flags);
+		pair = asrc->pair[i];
+		if (!pair || !pair->req_pair) {
+			spin_unlock_irqrestore(&asrc->lock, lock_flags);
+			continue;
+		}
+		if (asrc->m2m_pair_resume)
+			asrc->m2m_pair_resume(pair);
+
+		spin_unlock_irqrestore(&asrc->lock, lock_flags);
+	}
+
+	return 0;
+}
+#endif
+
+static const struct dev_pm_ops asrc_m2m_pm_ops = {
+	SET_NOIRQ_SYSTEM_SLEEP_PM_OPS(asrc_m2m_suspend,
+				      asrc_m2m_resume)
+};
+
+static struct platform_driver asrc_m2m_driver = {
+	.probe  = asrc_m2m_probe,
+	.remove_new = asrc_m2m_remove,
+	.driver = {
+		.name = M2M_DRV_NAME,
+		.pm = &asrc_m2m_pm_ops,
+	},
+};
+module_platform_driver(asrc_m2m_driver);
+
+MODULE_DESCRIPTION("Freescale ASRC M2M driver");
+MODULE_ALIAS("platform:" M2M_DRV_NAME);
+MODULE_LICENSE("GPL");
