Merging upstream version 6.7.7.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

9 files changed, 56 insertions, 2630 deletions

diff --git a/drivers/media/v4l2-core/Kconfig b/drivers/media/v4l2-core/Kconfig
index f77ebd688c..331b8e535e 100644
--- a/drivers/media/v4l2-core/Kconfig
+++ b/drivers/media/v4l2-core/Kconfig
@@ -82,19 +82,3 @@ config V4L2_CCI_I2C
 	depends on I2C
 	select REGMAP_I2C
 	select V4L2_CCI
-
-# Used by drivers that need Videobuf modules
-config VIDEOBUF_GEN
-	tristate
-
-config VIDEOBUF_DMA_SG
-	tristate
-	select VIDEOBUF_GEN
-
-config VIDEOBUF_VMALLOC
-	tristate
-	select VIDEOBUF_GEN
-
-config VIDEOBUF_DMA_CONTIG
-	tristate
-	select VIDEOBUF_GEN
diff --git a/drivers/media/v4l2-core/Makefile b/drivers/media/v4l2-core/Makefile
index be25517057..2177b9d63a 100644
--- a/drivers/media/v4l2-core/Makefile
+++ b/drivers/media/v4l2-core/Makefile
@@ -33,10 +33,5 @@ obj-$(CONFIG_V4L2_JPEG_HELPER) += v4l2-jpeg.o
 obj-$(CONFIG_V4L2_MEM2MEM_DEV) += v4l2-mem2mem.o
 obj-$(CONFIG_V4L2_VP9) += v4l2-vp9.o
 
-obj-$(CONFIG_VIDEOBUF_DMA_CONTIG) += videobuf-dma-contig.o
-obj-$(CONFIG_VIDEOBUF_DMA_SG) += videobuf-dma-sg.o
-obj-$(CONFIG_VIDEOBUF_GEN) += videobuf-core.o
-obj-$(CONFIG_VIDEOBUF_VMALLOC) += videobuf-vmalloc.o
-
 obj-$(CONFIG_VIDEO_TUNER) += tuner.o
 obj-$(CONFIG_VIDEO_DEV) += v4l2-dv-timings.o videodev.o
diff --git a/drivers/media/v4l2-core/v4l2-event.c b/drivers/media/v4l2-core/v4l2-event.c
index c5ce9f11ad..3898ff7edd 100644
--- a/drivers/media/v4l2-core/v4l2-event.c
+++ b/drivers/media/v4l2-core/v4l2-event.c
@@ -238,6 +238,7 @@ int v4l2_event_subscribe(struct v4l2_fh *fh,
 	sev = kvzalloc(struct_size(sev, events, elems), GFP_KERNEL);
 	if (!sev)
 		return -ENOMEM;
+	sev->elems = elems;
 	for (i = 0; i < elems; i++)
 		sev->events[i].sev = sev;
 	sev->type = sub->type;
@@ -245,7 +246,6 @@ int v4l2_event_subscribe(struct v4l2_fh *fh,
 	sev->flags = sub->flags;
 	sev->fh = fh;
 	sev->ops = ops;
-	sev->elems = elems;
 
 	mutex_lock(&fh->subscribe_lock);
 
diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c
index f4d9d62790..9b1de54ce3 100644
--- a/drivers/media/v4l2-core/v4l2-ioctl.c
+++ b/drivers/media/v4l2-core/v4l2-ioctl.c
@@ -1510,6 +1510,7 @@ static void v4l_fill_fmtdesc(struct v4l2_fmtdesc *fmt)
 		case V4L2_PIX_FMT_AV1_FRAME:	descr = "AV1 Frame"; break;
 		case V4L2_PIX_FMT_MT2110T:	descr = "Mediatek 10bit Tile Mode"; break;
 		case V4L2_PIX_FMT_MT2110R:	descr = "Mediatek 10bit Raster Mode"; break;
+		case V4L2_PIX_FMT_HEXTILE:	descr = "Hextile Compressed Format"; break;
 		default:
 			if (fmt->description[0])
 				return;
diff --git a/drivers/media/v4l2-core/v4l2-subdev.c b/drivers/media/v4l2-core/v4l2-subdev.c
index 31752c06d1..be86b906c9 100644
--- a/drivers/media/v4l2-core/v4l2-subdev.c
+++ b/drivers/media/v4l2-core/v4l2-subdev.c
@@ -15,6 +15,7 @@
 #include <linux/module.h>
 #include <linux/overflow.h>
 #include <linux/slab.h>
+#include <linux/string.h>
 #include <linux/types.h>
 #include <linux/version.h>
 #include <linux/videodev2.h>
@@ -306,6 +307,42 @@ static int call_set_selection(struct v4l2_subdev *sd,
 	       sd->ops->pad->set_selection(sd, state, sel);
 }
 
+static int call_get_frame_desc(struct v4l2_subdev *sd, unsigned int pad,
+			       struct v4l2_mbus_frame_desc *fd)
+{
+	unsigned int i;
+	int ret;
+
+	memset(fd, 0, sizeof(*fd));
+
+	ret = sd->ops->pad->get_frame_desc(sd, pad, fd);
+	if (ret)
+		return ret;
+
+	dev_dbg(sd->dev, "Frame descriptor on pad %u, type %s\n", pad,
+		fd->type == V4L2_MBUS_FRAME_DESC_TYPE_PARALLEL ? "parallel" :
+		fd->type == V4L2_MBUS_FRAME_DESC_TYPE_CSI2 ? "CSI-2" :
+		"unknown");
+
+	for (i = 0; i < fd->num_entries; i++) {
+		struct v4l2_mbus_frame_desc_entry *entry = &fd->entry[i];
+		char buf[20] = "";
+
+		if (fd->type == V4L2_MBUS_FRAME_DESC_TYPE_CSI2)
+			WARN_ON(snprintf(buf, sizeof(buf),
+					 ", vc %u, dt 0x%02x",
+					 entry->bus.csi2.vc,
+					 entry->bus.csi2.dt) >= sizeof(buf));
+
+		dev_dbg(sd->dev,
+			"\tstream %u, code 0x%04x, length %u, flags 0x%04x%s\n",
+			entry->stream, entry->pixelcode, entry->length,
+			entry->flags, buf);
+	}
+
+	return 0;
+}
+
 static inline int check_edid(struct v4l2_subdev *sd,
 			     struct v4l2_subdev_edid *edid)
 {
@@ -359,6 +396,18 @@ static int call_s_stream(struct v4l2_subdev *sd, int enable)
 {
 	int ret;
 
+	/*
+	 * The .s_stream() operation must never be called to start or stop an
+	 * already started or stopped subdev. Catch offenders but don't return
+	 * an error yet to avoid regressions.
+	 *
+	 * As .s_stream() is mutually exclusive with the .enable_streams() and
+	 * .disable_streams() operation, we can use the enabled_streams field
+	 * to store the subdev streaming state.
+	 */
+	if (WARN_ON(!!sd->enabled_streams == !!enable))
+		return 0;
+
 #if IS_REACHABLE(CONFIG_LEDS_CLASS)
 	if (!IS_ERR_OR_NULL(sd->privacy_led)) {
 		if (enable)
@@ -372,9 +421,12 @@ static int call_s_stream(struct v4l2_subdev *sd, int enable)
 
 	if (!enable && ret < 0) {
 		dev_warn(sd->dev, "disabling streaming failed (%d)\n", ret);
-		return 0;
+		ret = 0;
 	}
 
+	if (!ret)
+		sd->enabled_streams = enable ? BIT(0) : 0;
+
 	return ret;
 }
 
@@ -431,6 +483,7 @@ static const struct v4l2_subdev_pad_ops v4l2_subdev_call_pad_wrappers = {
 	.set_edid		= call_set_edid,
 	.dv_timings_cap		= call_dv_timings_cap,
 	.enum_dv_timings	= call_enum_dv_timings,
+	.get_frame_desc		= call_get_frame_desc,
 	.get_mbus_config	= call_get_mbus_config,
 };
 
diff --git a/drivers/media/v4l2-core/videobuf-core.c b/drivers/media/v4l2-core/videobuf-core.c
deleted file mode 100644
index 606a271bdd..0000000000
--- a/drivers/media/v4l2-core/videobuf-core.c
+++ /dev/null
@@ -1,1198 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * generic helper functions for handling video4linux capture buffers
- *
- * (c) 2007 Mauro Carvalho Chehab, <mchehab@kernel.org>
- *
- * Highly based on video-buf written originally by:
- * (c) 2001,02 Gerd Knorr <kraxel@bytesex.org>
- * (c) 2006 Mauro Carvalho Chehab, <mchehab@kernel.org>
- * (c) 2006 Ted Walther and John Sokol
- */
-
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/moduleparam.h>
-#include <linux/mm.h>
-#include <linux/sched.h>
-#include <linux/slab.h>
-#include <linux/interrupt.h>
-
-#include <media/videobuf-core.h>
-#include <media/v4l2-common.h>
-
-#define MAGIC_BUFFER 0x20070728
-#define MAGIC_CHECK(is, should)						\
-	do {								\
-		if (unlikely((is) != (should))) {			\
-			printk(KERN_ERR					\
-				"magic mismatch: %x (expected %x)\n",	\
-					is, should);			\
-			BUG();						\
-		}							\
-	} while (0)
-
-static int debug;
-module_param(debug, int, 0644);
-
-MODULE_DESCRIPTION("helper module to manage video4linux buffers");
-MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@kernel.org>");
-MODULE_LICENSE("GPL");
-
-#define dprintk(level, fmt, arg...)					\
-	do {								\
-		if (debug >= level)					\
-			printk(KERN_DEBUG "vbuf: " fmt, ## arg);	\
-	} while (0)
-
-/* --------------------------------------------------------------------- */
-
-#define CALL(q, f, arg...)						\
-	((q->int_ops->f) ? q->int_ops->f(arg) : 0)
-#define CALLPTR(q, f, arg...)						\
-	((q->int_ops->f) ? q->int_ops->f(arg) : NULL)
-
-struct videobuf_buffer *videobuf_alloc_vb(struct videobuf_queue *q)
-{
-	struct videobuf_buffer *vb;
-
-	BUG_ON(q->msize < sizeof(*vb));
-
-	if (!q->int_ops || !q->int_ops->alloc_vb) {
-		printk(KERN_ERR "No specific ops defined!\n");
-		BUG();
-	}
-
-	vb = q->int_ops->alloc_vb(q->msize);
-	if (NULL != vb) {
-		init_waitqueue_head(&vb->done);
-		vb->magic = MAGIC_BUFFER;
-	}
-
-	return vb;
-}
-EXPORT_SYMBOL_GPL(videobuf_alloc_vb);
-
-static int state_neither_active_nor_queued(struct videobuf_queue *q,
-					   struct videobuf_buffer *vb)
-{
-	unsigned long flags;
-	bool rc;
-
-	spin_lock_irqsave(q->irqlock, flags);
-	rc = vb->state != VIDEOBUF_ACTIVE && vb->state != VIDEOBUF_QUEUED;
-	spin_unlock_irqrestore(q->irqlock, flags);
-	return rc;
-};
-
-int videobuf_waiton(struct videobuf_queue *q, struct videobuf_buffer *vb,
-		int non_blocking, int intr)
-{
-	bool is_ext_locked;
-	int ret = 0;
-
-	MAGIC_CHECK(vb->magic, MAGIC_BUFFER);
-
-	if (non_blocking) {
-		if (state_neither_active_nor_queued(q, vb))
-			return 0;
-		return -EAGAIN;
-	}
-
-	is_ext_locked = q->ext_lock && mutex_is_locked(q->ext_lock);
-
-	/* Release vdev lock to prevent this wait from blocking outside access to
-	   the device. */
-	if (is_ext_locked)
-		mutex_unlock(q->ext_lock);
-	if (intr)
-		ret = wait_event_interruptible(vb->done,
-					state_neither_active_nor_queued(q, vb));
-	else
-		wait_event(vb->done, state_neither_active_nor_queued(q, vb));
-	/* Relock */
-	if (is_ext_locked)
-		mutex_lock(q->ext_lock);
-
-	return ret;
-}
-EXPORT_SYMBOL_GPL(videobuf_waiton);
-
-int videobuf_iolock(struct videobuf_queue *q, struct videobuf_buffer *vb,
-		    struct v4l2_framebuffer *fbuf)
-{
-	MAGIC_CHECK(vb->magic, MAGIC_BUFFER);
-	MAGIC_CHECK(q->int_ops->magic, MAGIC_QTYPE_OPS);
-
-	return CALL(q, iolock, q, vb, fbuf);
-}
-EXPORT_SYMBOL_GPL(videobuf_iolock);
-
-void *videobuf_queue_to_vaddr(struct videobuf_queue *q,
-			      struct videobuf_buffer *buf)
-{
-	if (q->int_ops->vaddr)
-		return q->int_ops->vaddr(buf);
-	return NULL;
-}
-EXPORT_SYMBOL_GPL(videobuf_queue_to_vaddr);
-
-/* --------------------------------------------------------------------- */
-
-
-void videobuf_queue_core_init(struct videobuf_queue *q,
-			 const struct videobuf_queue_ops *ops,
-			 struct device *dev,
-			 spinlock_t *irqlock,
-			 enum v4l2_buf_type type,
-			 enum v4l2_field field,
-			 unsigned int msize,
-			 void *priv,
-			 struct videobuf_qtype_ops *int_ops,
-			 struct mutex *ext_lock)
-{
-	BUG_ON(!q);
-	memset(q, 0, sizeof(*q));
-	q->irqlock   = irqlock;
-	q->ext_lock  = ext_lock;
-	q->dev       = dev;
-	q->type      = type;
-	q->field     = field;
-	q->msize     = msize;
-	q->ops       = ops;
-	q->priv_data = priv;
-	q->int_ops   = int_ops;
-
-	/* All buffer operations are mandatory */
-	BUG_ON(!q->ops->buf_setup);
-	BUG_ON(!q->ops->buf_prepare);
-	BUG_ON(!q->ops->buf_queue);
-	BUG_ON(!q->ops->buf_release);
-
-	/* Lock is mandatory for queue_cancel to work */
-	BUG_ON(!irqlock);
-
-	/* Having implementations for abstract methods are mandatory */
-	BUG_ON(!q->int_ops);
-
-	mutex_init(&q->vb_lock);
-	init_waitqueue_head(&q->wait);
-	INIT_LIST_HEAD(&q->stream);
-}
-EXPORT_SYMBOL_GPL(videobuf_queue_core_init);
-
-/* Locking: Only usage in bttv unsafe find way to remove */
-int videobuf_queue_is_busy(struct videobuf_queue *q)
-{
-	int i;
-
-	MAGIC_CHECK(q->int_ops->magic, MAGIC_QTYPE_OPS);
-
-	if (q->streaming) {
-		dprintk(1, "busy: streaming active\n");
-		return 1;
-	}
-	if (q->reading) {
-		dprintk(1, "busy: pending read #1\n");
-		return 1;
-	}
-	if (q->read_buf) {
-		dprintk(1, "busy: pending read #2\n");
-		return 1;
-	}
-	for (i = 0; i < VIDEO_MAX_FRAME; i++) {
-		if (NULL == q->bufs[i])
-			continue;
-		if (q->bufs[i]->map) {
-			dprintk(1, "busy: buffer #%d mapped\n", i);
-			return 1;
-		}
-		if (q->bufs[i]->state == VIDEOBUF_QUEUED) {
-			dprintk(1, "busy: buffer #%d queued\n", i);
-			return 1;
-		}
-		if (q->bufs[i]->state == VIDEOBUF_ACTIVE) {
-			dprintk(1, "busy: buffer #%d active\n", i);
-			return 1;
-		}
-	}
-	return 0;
-}
-EXPORT_SYMBOL_GPL(videobuf_queue_is_busy);
-
-/*
- * __videobuf_free() - free all the buffers and their control structures
- *
- * This function can only be called if streaming/reading is off, i.e. no buffers
- * are under control of the driver.
- */
-/* Locking: Caller holds q->vb_lock */
-static int __videobuf_free(struct videobuf_queue *q)
-{
-	int i;
-
-	dprintk(1, "%s\n", __func__);
-	if (!q)
-		return 0;
-
-	if (q->streaming || q->reading) {
-		dprintk(1, "Cannot free buffers when streaming or reading\n");
-		return -EBUSY;
-	}
-
-	MAGIC_CHECK(q->int_ops->magic, MAGIC_QTYPE_OPS);
-
-	for (i = 0; i < VIDEO_MAX_FRAME; i++)
-		if (q->bufs[i] && q->bufs[i]->map) {
-			dprintk(1, "Cannot free mmapped buffers\n");
-			return -EBUSY;
-		}
-
-	for (i = 0; i < VIDEO_MAX_FRAME; i++) {
-		if (NULL == q->bufs[i])
-			continue;
-		q->ops->buf_release(q, q->bufs[i]);
-		kfree(q->bufs[i]);
-		q->bufs[i] = NULL;
-	}
-
-	return 0;
-}
-
-/* Locking: Caller holds q->vb_lock */
-void videobuf_queue_cancel(struct videobuf_queue *q)
-{
-	unsigned long flags = 0;
-	int i;
-
-	q->streaming = 0;
-	q->reading  = 0;
-	wake_up_interruptible_sync(&q->wait);
-
-	/* remove queued buffers from list */
-	spin_lock_irqsave(q->irqlock, flags);
-	for (i = 0; i < VIDEO_MAX_FRAME; i++) {
-		if (NULL == q->bufs[i])
-			continue;
-		if (q->bufs[i]->state == VIDEOBUF_QUEUED) {
-			list_del(&q->bufs[i]->queue);
-			q->bufs[i]->state = VIDEOBUF_ERROR;
-			wake_up_all(&q->bufs[i]->done);
-		}
-	}
-	spin_unlock_irqrestore(q->irqlock, flags);
-
-	/* free all buffers + clear queue */
-	for (i = 0; i < VIDEO_MAX_FRAME; i++) {
-		if (NULL == q->bufs[i])
-			continue;
-		q->ops->buf_release(q, q->bufs[i]);
-	}
-	INIT_LIST_HEAD(&q->stream);
-}
-EXPORT_SYMBOL_GPL(videobuf_queue_cancel);
-
-/* --------------------------------------------------------------------- */
-
-/* Locking: Caller holds q->vb_lock */
-enum v4l2_field videobuf_next_field(struct videobuf_queue *q)
-{
-	enum v4l2_field field = q->field;
-
-	BUG_ON(V4L2_FIELD_ANY == field);
-
-	if (V4L2_FIELD_ALTERNATE == field) {
-		if (V4L2_FIELD_TOP == q->last) {
-			field   = V4L2_FIELD_BOTTOM;
-			q->last = V4L2_FIELD_BOTTOM;
-		} else {
-			field   = V4L2_FIELD_TOP;
-			q->last = V4L2_FIELD_TOP;
-		}
-	}
-	return field;
-}
-EXPORT_SYMBOL_GPL(videobuf_next_field);
-
-/* Locking: Caller holds q->vb_lock */
-static void videobuf_status(struct videobuf_queue *q, struct v4l2_buffer *b,
-			    struct videobuf_buffer *vb, enum v4l2_buf_type type)
-{
-	MAGIC_CHECK(vb->magic, MAGIC_BUFFER);
-	MAGIC_CHECK(q->int_ops->magic, MAGIC_QTYPE_OPS);
-
-	b->index    = vb->i;
-	b->type     = type;
-
-	b->memory   = vb->memory;
-	switch (b->memory) {
-	case V4L2_MEMORY_MMAP:
-		b->m.offset  = vb->boff;
-		b->length    = vb->bsize;
-		break;
-	case V4L2_MEMORY_USERPTR:
-		b->m.userptr = vb->baddr;
-		b->length    = vb->bsize;
-		break;
-	case V4L2_MEMORY_OVERLAY:
-		b->m.offset  = vb->boff;
-		break;
-	case V4L2_MEMORY_DMABUF:
-		/* DMABUF is not handled in videobuf framework */
-		break;
-	}
-
-	b->flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
-	if (vb->map)
-		b->flags |= V4L2_BUF_FLAG_MAPPED;
-
-	switch (vb->state) {
-	case VIDEOBUF_PREPARED:
-	case VIDEOBUF_QUEUED:
-	case VIDEOBUF_ACTIVE:
-		b->flags |= V4L2_BUF_FLAG_QUEUED;
-		break;
-	case VIDEOBUF_ERROR:
-		b->flags |= V4L2_BUF_FLAG_ERROR;
-		fallthrough;
-	case VIDEOBUF_DONE:
-		b->flags |= V4L2_BUF_FLAG_DONE;
-		break;
-	case VIDEOBUF_NEEDS_INIT:
-	case VIDEOBUF_IDLE:
-		/* nothing */
-		break;
-	}
-
-	b->field     = vb->field;
-	v4l2_buffer_set_timestamp(b, vb->ts);
-	b->bytesused = vb->size;
-	b->sequence  = vb->field_count >> 1;
-}
-
-int videobuf_mmap_free(struct videobuf_queue *q)
-{
-	int ret;
-	videobuf_queue_lock(q);
-	ret = __videobuf_free(q);
-	videobuf_queue_unlock(q);
-	return ret;
-}
-EXPORT_SYMBOL_GPL(videobuf_mmap_free);
-
-/* Locking: Caller holds q->vb_lock */
-int __videobuf_mmap_setup(struct videobuf_queue *q,
-			unsigned int bcount, unsigned int bsize,
-			enum v4l2_memory memory)
-{
-	unsigned int i;
-	int err;
-
-	MAGIC_CHECK(q->int_ops->magic, MAGIC_QTYPE_OPS);
-
-	err = __videobuf_free(q);
-	if (0 != err)
-		return err;
-
-	/* Allocate and initialize buffers */
-	for (i = 0; i < bcount; i++) {
-		q->bufs[i] = videobuf_alloc_vb(q);
-
-		if (NULL == q->bufs[i])
-			break;
-
-		q->bufs[i]->i      = i;
-		q->bufs[i]->memory = memory;
-		q->bufs[i]->bsize  = bsize;
-		switch (memory) {
-		case V4L2_MEMORY_MMAP:
-			q->bufs[i]->boff = PAGE_ALIGN(bsize) * i;
-			break;
-		case V4L2_MEMORY_USERPTR:
-		case V4L2_MEMORY_OVERLAY:
-		case V4L2_MEMORY_DMABUF:
-			/* nothing */
-			break;
-		}
-	}
-
-	if (!i)
-		return -ENOMEM;
-
-	dprintk(1, "mmap setup: %d buffers, %d bytes each\n", i, bsize);
-
-	return i;
-}
-EXPORT_SYMBOL_GPL(__videobuf_mmap_setup);
-
-int videobuf_mmap_setup(struct videobuf_queue *q,
-			unsigned int bcount, unsigned int bsize,
-			enum v4l2_memory memory)
-{
-	int ret;
-	videobuf_queue_lock(q);
-	ret = __videobuf_mmap_setup(q, bcount, bsize, memory);
-	videobuf_queue_unlock(q);
-	return ret;
-}
-EXPORT_SYMBOL_GPL(videobuf_mmap_setup);
-
-int videobuf_reqbufs(struct videobuf_queue *q,
-		 struct v4l2_requestbuffers *req)
-{
-	unsigned int size, count;
-	int retval;
-
-	if (req->memory != V4L2_MEMORY_MMAP     &&
-	    req->memory != V4L2_MEMORY_USERPTR  &&
-	    req->memory != V4L2_MEMORY_OVERLAY) {
-		dprintk(1, "reqbufs: memory type invalid\n");
-		return -EINVAL;
-	}
-
-	videobuf_queue_lock(q);
-	if (req->type != q->type) {
-		dprintk(1, "reqbufs: queue type invalid\n");
-		retval = -EINVAL;
-		goto done;
-	}
-
-	if (q->streaming) {
-		dprintk(1, "reqbufs: streaming already exists\n");
-		retval = -EBUSY;
-		goto done;
-	}
-	if (!list_empty(&q->stream)) {
-		dprintk(1, "reqbufs: stream running\n");
-		retval = -EBUSY;
-		goto done;
-	}
-
-	if (req->count == 0) {
-		dprintk(1, "reqbufs: count invalid (%d)\n", req->count);
-		retval = __videobuf_free(q);
-		goto done;
-	}
-
-	count = req->count;
-	if (count > VIDEO_MAX_FRAME)
-		count = VIDEO_MAX_FRAME;
-	size = 0;
-	q->ops->buf_setup(q, &count, &size);
-	dprintk(1, "reqbufs: bufs=%d, size=0x%x [%u pages total]\n",
-		count, size,
-		(unsigned int)((count * PAGE_ALIGN(size)) >> PAGE_SHIFT));
-
-	retval = __videobuf_mmap_setup(q, count, size, req->memory);
-	if (retval < 0) {
-		dprintk(1, "reqbufs: mmap setup returned %d\n", retval);
-		goto done;
-	}
-
-	req->count = retval;
-	retval = 0;
-
- done:
-	videobuf_queue_unlock(q);
-	return retval;
-}
-EXPORT_SYMBOL_GPL(videobuf_reqbufs);
-
-int videobuf_querybuf(struct videobuf_queue *q, struct v4l2_buffer *b)
-{
-	int ret = -EINVAL;
-
-	videobuf_queue_lock(q);
-	if (unlikely(b->type != q->type)) {
-		dprintk(1, "querybuf: Wrong type.\n");
-		goto done;
-	}
-	if (unlikely(b->index >= VIDEO_MAX_FRAME)) {
-		dprintk(1, "querybuf: index out of range.\n");
-		goto done;
-	}
-	if (unlikely(NULL == q->bufs[b->index])) {
-		dprintk(1, "querybuf: buffer is null.\n");
-		goto done;
-	}
-
-	videobuf_status(q, b, q->bufs[b->index], q->type);
-
-	ret = 0;
-done:
-	videobuf_queue_unlock(q);
-	return ret;
-}
-EXPORT_SYMBOL_GPL(videobuf_querybuf);
-
-int videobuf_qbuf(struct videobuf_queue *q, struct v4l2_buffer *b)
-{
-	struct videobuf_buffer *buf;
-	enum v4l2_field field;
-	unsigned long flags = 0;
-	int retval;
-
-	MAGIC_CHECK(q->int_ops->magic, MAGIC_QTYPE_OPS);
-
-	if (b->memory == V4L2_MEMORY_MMAP)
-		mmap_read_lock(current->mm);
-
-	videobuf_queue_lock(q);
-	retval = -EBUSY;
-	if (q->reading) {
-		dprintk(1, "qbuf: Reading running...\n");
-		goto done;
-	}
-	retval = -EINVAL;
-	if (b->type != q->type) {
-		dprintk(1, "qbuf: Wrong type.\n");
-		goto done;
-	}
-	if (b->index >= VIDEO_MAX_FRAME) {
-		dprintk(1, "qbuf: index out of range.\n");
-		goto done;
-	}
-	buf = q->bufs[b->index];
-	if (NULL == buf) {
-		dprintk(1, "qbuf: buffer is null.\n");
-		goto done;
-	}
-	MAGIC_CHECK(buf->magic, MAGIC_BUFFER);
-	if (buf->memory != b->memory) {
-		dprintk(1, "qbuf: memory type is wrong.\n");
-		goto done;
-	}
-	if (buf->state != VIDEOBUF_NEEDS_INIT && buf->state != VIDEOBUF_IDLE) {
-		dprintk(1, "qbuf: buffer is already queued or active.\n");
-		goto done;
-	}
-
-	switch (b->memory) {
-	case V4L2_MEMORY_MMAP:
-		if (0 == buf->baddr) {
-			dprintk(1, "qbuf: mmap requested but buffer addr is zero!\n");
-			goto done;
-		}
-		if (q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT
-		    || q->type == V4L2_BUF_TYPE_VBI_OUTPUT
-		    || q->type == V4L2_BUF_TYPE_SLICED_VBI_OUTPUT
-		    || q->type == V4L2_BUF_TYPE_SDR_OUTPUT) {
-			buf->size = b->bytesused;
-			buf->field = b->field;
-			buf->ts = v4l2_buffer_get_timestamp(b);
-		}
-		break;
-	case V4L2_MEMORY_USERPTR:
-		if (b->length < buf->bsize) {
-			dprintk(1, "qbuf: buffer length is not enough\n");
-			goto done;
-		}
-		if (VIDEOBUF_NEEDS_INIT != buf->state &&
-		    buf->baddr != b->m.userptr)
-			q->ops->buf_release(q, buf);
-		buf->baddr = b->m.userptr;
-		break;
-	case V4L2_MEMORY_OVERLAY:
-		buf->boff = b->m.offset;
-		break;
-	default:
-		dprintk(1, "qbuf: wrong memory type\n");
-		goto done;
-	}
-
-	dprintk(1, "qbuf: requesting next field\n");
-	field = videobuf_next_field(q);
-	retval = q->ops->buf_prepare(q, buf, field);
-	if (0 != retval) {
-		dprintk(1, "qbuf: buffer_prepare returned %d\n", retval);
-		goto done;
-	}
-
-	list_add_tail(&buf->stream, &q->stream);
-	if (q->streaming) {
-		spin_lock_irqsave(q->irqlock, flags);
-		q->ops->buf_queue(q, buf);
-		spin_unlock_irqrestore(q->irqlock, flags);
-	}
-	dprintk(1, "qbuf: succeeded\n");
-	retval = 0;
-	wake_up_interruptible_sync(&q->wait);
-
-done:
-	videobuf_queue_unlock(q);
-
-	if (b->memory == V4L2_MEMORY_MMAP)
-		mmap_read_unlock(current->mm);
-
-	return retval;
-}
-EXPORT_SYMBOL_GPL(videobuf_qbuf);
-
-/* Locking: Caller holds q->vb_lock */
-static int stream_next_buffer_check_queue(struct videobuf_queue *q, int noblock)
-{
-	int retval;
-
-checks:
-	if (!q->streaming) {
-		dprintk(1, "next_buffer: Not streaming\n");
-		retval = -EINVAL;
-		goto done;
-	}
-
-	if (list_empty(&q->stream)) {
-		if (noblock) {
-			retval = -EAGAIN;
-			dprintk(2, "next_buffer: no buffers to dequeue\n");
-			goto done;
-		} else {
-			dprintk(2, "next_buffer: waiting on buffer\n");
-
-			/* Drop lock to avoid deadlock with qbuf */
-			videobuf_queue_unlock(q);
-
-			/* Checking list_empty and streaming is safe without
-			 * locks because we goto checks to validate while
-			 * holding locks before proceeding */
-			retval = wait_event_interruptible(q->wait,
-				!list_empty(&q->stream) || !q->streaming);
-			videobuf_queue_lock(q);
-
-			if (retval)
-				goto done;
-
-			goto checks;
-		}
-	}
-
-	retval = 0;
-
-done:
-	return retval;
-}
-
-/* Locking: Caller holds q->vb_lock */
-static int stream_next_buffer(struct videobuf_queue *q,
-			struct videobuf_buffer **vb, int nonblocking)
-{
-	int retval;
-	struct videobuf_buffer *buf = NULL;
-
-	retval = stream_next_buffer_check_queue(q, nonblocking);
-	if (retval)
-		goto done;
-
-	buf = list_entry(q->stream.next, struct videobuf_buffer, stream);
-	retval = videobuf_waiton(q, buf, nonblocking, 1);
-	if (retval < 0)
-		goto done;
-
-	*vb = buf;
-done:
-	return retval;
-}
-
-int videobuf_dqbuf(struct videobuf_queue *q,
-		   struct v4l2_buffer *b, int nonblocking)
-{
-	struct videobuf_buffer *buf = NULL;
-	int retval;
-
-	MAGIC_CHECK(q->int_ops->magic, MAGIC_QTYPE_OPS);
-
-	memset(b, 0, sizeof(*b));
-	videobuf_queue_lock(q);
-
-	retval = stream_next_buffer(q, &buf, nonblocking);
-	if (retval < 0) {
-		dprintk(1, "dqbuf: next_buffer error: %i\n", retval);
-		goto done;
-	}
-
-	switch (buf->state) {
-	case VIDEOBUF_ERROR:
-		dprintk(1, "dqbuf: state is error\n");
-		break;
-	case VIDEOBUF_DONE:
-		dprintk(1, "dqbuf: state is done\n");
-		break;
-	default:
-		dprintk(1, "dqbuf: state invalid\n");
-		retval = -EINVAL;
-		goto done;
-	}
-	CALL(q, sync, q, buf);
-	videobuf_status(q, b, buf, q->type);
-	list_del(&buf->stream);
-	buf->state = VIDEOBUF_IDLE;
-	b->flags &= ~V4L2_BUF_FLAG_DONE;
-done:
-	videobuf_queue_unlock(q);
-	return retval;
-}
-EXPORT_SYMBOL_GPL(videobuf_dqbuf);
-
-int videobuf_streamon(struct videobuf_queue *q)
-{
-	struct videobuf_buffer *buf;
-	unsigned long flags = 0;
-	int retval;
-
-	videobuf_queue_lock(q);
-	retval = -EBUSY;
-	if (q->reading)
-		goto done;
-	retval = 0;
-	if (q->streaming)
-		goto done;
-	q->streaming = 1;
-	spin_lock_irqsave(q->irqlock, flags);
-	list_for_each_entry(buf, &q->stream, stream)
-		if (buf->state == VIDEOBUF_PREPARED)
-			q->ops->buf_queue(q, buf);
-	spin_unlock_irqrestore(q->irqlock, flags);
-
-	wake_up_interruptible_sync(&q->wait);
-done:
-	videobuf_queue_unlock(q);
-	return retval;
-}
-EXPORT_SYMBOL_GPL(videobuf_streamon);
-
-/* Locking: Caller holds q->vb_lock */
-static int __videobuf_streamoff(struct videobuf_queue *q)
-{
-	if (!q->streaming)
-		return -EINVAL;
-
-	videobuf_queue_cancel(q);
-
-	return 0;
-}
-
-int videobuf_streamoff(struct videobuf_queue *q)
-{
-	int retval;
-
-	videobuf_queue_lock(q);
-	retval = __videobuf_streamoff(q);
-	videobuf_queue_unlock(q);
-
-	return retval;
-}
-EXPORT_SYMBOL_GPL(videobuf_streamoff);
-
-/* Locking: Caller holds q->vb_lock */
-static ssize_t videobuf_read_zerocopy(struct videobuf_queue *q,
-				      char __user *data,
-				      size_t count, loff_t *ppos)
-{
-	enum v4l2_field field;
-	unsigned long flags = 0;
-	int retval;
-
-	MAGIC_CHECK(q->int_ops->magic, MAGIC_QTYPE_OPS);
-
-	/* setup stuff */
-	q->read_buf = videobuf_alloc_vb(q);
-	if (NULL == q->read_buf)
-		return -ENOMEM;
-
-	q->read_buf->memory = V4L2_MEMORY_USERPTR;
-	q->read_buf->baddr  = (unsigned long)data;
-	q->read_buf->bsize  = count;
-
-	field = videobuf_next_field(q);
-	retval = q->ops->buf_prepare(q, q->read_buf, field);
-	if (0 != retval)
-		goto done;
-
-	/* start capture & wait */
-	spin_lock_irqsave(q->irqlock, flags);
-	q->ops->buf_queue(q, q->read_buf);
-	spin_unlock_irqrestore(q->irqlock, flags);
-	retval = videobuf_waiton(q, q->read_buf, 0, 0);
-	if (0 == retval) {
-		CALL(q, sync, q, q->read_buf);
-		if (VIDEOBUF_ERROR == q->read_buf->state)
-			retval = -EIO;
-		else
-			retval = q->read_buf->size;
-	}
-
-done:
-	/* cleanup */
-	q->ops->buf_release(q, q->read_buf);
-	kfree(q->read_buf);
-	q->read_buf = NULL;
-	return retval;
-}
-
-static int __videobuf_copy_to_user(struct videobuf_queue *q,
-				   struct videobuf_buffer *buf,
-				   char __user *data, size_t count,
-				   int nonblocking)
-{
-	void *vaddr = CALLPTR(q, vaddr, buf);
-
-	/* copy to userspace */
-	if (count > buf->size - q->read_off)
-		count = buf->size - q->read_off;
-
-	if (copy_to_user(data, vaddr + q->read_off, count))
-		return -EFAULT;
-
-	return count;
-}
-
-static int __videobuf_copy_stream(struct videobuf_queue *q,
-				  struct videobuf_buffer *buf,
-				  char __user *data, size_t count, size_t pos,
-				  int vbihack, int nonblocking)
-{
-	unsigned int *fc = CALLPTR(q, vaddr, buf);
-
-	if (vbihack) {
-		/* dirty, undocumented hack -- pass the frame counter
-			* within the last four bytes of each vbi data block.
-			* We need that one to maintain backward compatibility
-			* to all vbi decoding software out there ... */
-		fc += (buf->size >> 2) - 1;
-		*fc = buf->field_count >> 1;
-		dprintk(1, "vbihack: %d\n", *fc);
-	}
-
-	/* copy stuff using the common method */
-	count = __videobuf_copy_to_user(q, buf, data, count, nonblocking);
-
-	if ((count == -EFAULT) && (pos == 0))
-		return -EFAULT;
-
-	return count;
-}
-
-ssize_t videobuf_read_one(struct videobuf_queue *q,
-			  char __user *data, size_t count, loff_t *ppos,
-			  int nonblocking)
-{
-	enum v4l2_field field;
-	unsigned long flags = 0;
-	unsigned size = 0, nbufs = 1;
-	int retval;
-
-	MAGIC_CHECK(q->int_ops->magic, MAGIC_QTYPE_OPS);
-
-	videobuf_queue_lock(q);
-
-	q->ops->buf_setup(q, &nbufs, &size);
-
-	if (NULL == q->read_buf  &&
-	    count >= size        &&
-	    !nonblocking) {
-		retval = videobuf_read_zerocopy(q, data, count, ppos);
-		if (retval >= 0  ||  retval == -EIO)
-			/* ok, all done */
-			goto done;
-		/* fallback to kernel bounce buffer on failures */
-	}
-
-	if (NULL == q->read_buf) {
-		/* need to capture a new frame */
-		retval = -ENOMEM;
-		q->read_buf = videobuf_alloc_vb(q);
-
-		dprintk(1, "video alloc=0x%p\n", q->read_buf);
-		if (NULL == q->read_buf)
-			goto done;
-		q->read_buf->memory = V4L2_MEMORY_USERPTR;
-		q->read_buf->bsize = count; /* preferred size */
-		field = videobuf_next_field(q);
-		retval = q->ops->buf_prepare(q, q->read_buf, field);
-
-		if (0 != retval) {
-			kfree(q->read_buf);
-			q->read_buf = NULL;
-			goto done;
-		}
-
-		spin_lock_irqsave(q->irqlock, flags);
-		q->ops->buf_queue(q, q->read_buf);
-		spin_unlock_irqrestore(q->irqlock, flags);
-
-		q->read_off = 0;
-	}
-
-	/* wait until capture is done */
-	retval = videobuf_waiton(q, q->read_buf, nonblocking, 1);
-	if (0 != retval)
-		goto done;
-
-	CALL(q, sync, q, q->read_buf);
-
-	if (VIDEOBUF_ERROR == q->read_buf->state) {
-		/* catch I/O errors */
-		q->ops->buf_release(q, q->read_buf);
-		kfree(q->read_buf);
-		q->read_buf = NULL;
-		retval = -EIO;
-		goto done;
-	}
-
-	/* Copy to userspace */
-	retval = __videobuf_copy_to_user(q, q->read_buf, data, count, nonblocking);
-	if (retval < 0)
-		goto done;
-
-	q->read_off += retval;
-	if (q->read_off == q->read_buf->size) {
-		/* all data copied, cleanup */
-		q->ops->buf_release(q, q->read_buf);
-		kfree(q->read_buf);
-		q->read_buf = NULL;
-	}
-
-done:
-	videobuf_queue_unlock(q);
-	return retval;
-}
-EXPORT_SYMBOL_GPL(videobuf_read_one);
-
-/* Locking: Caller holds q->vb_lock */
-static int __videobuf_read_start(struct videobuf_queue *q)
-{
-	enum v4l2_field field;
-	unsigned long flags = 0;
-	unsigned int count = 0, size = 0;
-	int err, i;
-
-	q->ops->buf_setup(q, &count, &size);
-	if (count < 2)
-		count = 2;
-	if (count > VIDEO_MAX_FRAME)
-		count = VIDEO_MAX_FRAME;
-	size = PAGE_ALIGN(size);
-
-	err = __videobuf_mmap_setup(q, count, size, V4L2_MEMORY_USERPTR);
-	if (err < 0)
-		return err;
-
-	count = err;
-
-	for (i = 0; i < count; i++) {
-		field = videobuf_next_field(q);
-		err = q->ops->buf_prepare(q, q->bufs[i], field);
-		if (err)
-			return err;
-		list_add_tail(&q->bufs[i]->stream, &q->stream);
-	}
-	spin_lock_irqsave(q->irqlock, flags);
-	for (i = 0; i < count; i++)
-		q->ops->buf_queue(q, q->bufs[i]);
-	spin_unlock_irqrestore(q->irqlock, flags);
-	q->reading = 1;
-	return 0;
-}
-
-static void __videobuf_read_stop(struct videobuf_queue *q)
-{
-	int i;
-
-	videobuf_queue_cancel(q);
-	__videobuf_free(q);
-	INIT_LIST_HEAD(&q->stream);
-	for (i = 0; i < VIDEO_MAX_FRAME; i++) {
-		if (NULL == q->bufs[i])
-			continue;
-		kfree(q->bufs[i]);
-		q->bufs[i] = NULL;
-	}
-	q->read_buf = NULL;
-}
-
-int videobuf_read_start(struct videobuf_queue *q)
-{
-	int rc;
-
-	videobuf_queue_lock(q);
-	rc = __videobuf_read_start(q);
-	videobuf_queue_unlock(q);
-
-	return rc;
-}
-EXPORT_SYMBOL_GPL(videobuf_read_start);
-
-void videobuf_read_stop(struct videobuf_queue *q)
-{
-	videobuf_queue_lock(q);
-	__videobuf_read_stop(q);
-	videobuf_queue_unlock(q);
-}
-EXPORT_SYMBOL_GPL(videobuf_read_stop);
-
-void videobuf_stop(struct videobuf_queue *q)
-{
-	videobuf_queue_lock(q);
-
-	if (q->streaming)
-		__videobuf_streamoff(q);
-
-	if (q->reading)
-		__videobuf_read_stop(q);
-
-	videobuf_queue_unlock(q);
-}
-EXPORT_SYMBOL_GPL(videobuf_stop);
-
-ssize_t videobuf_read_stream(struct videobuf_queue *q,
-			     char __user *data, size_t count, loff_t *ppos,
-			     int vbihack, int nonblocking)
-{
-	int rc, retval;
-	unsigned long flags = 0;
-
-	MAGIC_CHECK(q->int_ops->magic, MAGIC_QTYPE_OPS);
-
-	dprintk(2, "%s\n", __func__);
-	videobuf_queue_lock(q);
-	retval = -EBUSY;
-	if (q->streaming)
-		goto done;
-	if (!q->reading) {
-		retval = __videobuf_read_start(q);
-		if (retval < 0)
-			goto done;
-	}
-
-	retval = 0;
-	while (count > 0) {
-		/* get / wait for data */
-		if (NULL == q->read_buf) {
-			q->read_buf = list_entry(q->stream.next,
-						 struct videobuf_buffer,
-						 stream);
-			list_del(&q->read_buf->stream);
-			q->read_off = 0;
-		}
-		rc = videobuf_waiton(q, q->read_buf, nonblocking, 1);
-		if (rc < 0) {
-			if (0 == retval)
-				retval = rc;
-			break;
-		}
-
-		if (q->read_buf->state == VIDEOBUF_DONE) {
-			rc = __videobuf_copy_stream(q, q->read_buf, data + retval, count,
-					retval, vbihack, nonblocking);
-			if (rc < 0) {
-				retval = rc;
-				break;
-			}
-			retval      += rc;
-			count       -= rc;
-			q->read_off += rc;
-		} else {
-			/* some error */
-			q->read_off = q->read_buf->size;
-			if (0 == retval)
-				retval = -EIO;
-		}
-
-		/* requeue buffer when done with copying */
-		if (q->read_off == q->read_buf->size) {
-			list_add_tail(&q->read_buf->stream,
-				      &q->stream);
-			spin_lock_irqsave(q->irqlock, flags);
-			q->ops->buf_queue(q, q->read_buf);
-			spin_unlock_irqrestore(q->irqlock, flags);
-			q->read_buf = NULL;
-		}
-		if (retval < 0)
-			break;
-	}
-
-done:
-	videobuf_queue_unlock(q);
-	return retval;
-}
-EXPORT_SYMBOL_GPL(videobuf_read_stream);
-
-__poll_t videobuf_poll_stream(struct file *file,
-			      struct videobuf_queue *q,
-			      poll_table *wait)
-{
-	__poll_t req_events = poll_requested_events(wait);
-	struct videobuf_buffer *buf = NULL;
-	__poll_t rc = 0;
-
-	videobuf_queue_lock(q);
-	if (q->streaming) {
-		if (!list_empty(&q->stream))
-			buf = list_entry(q->stream.next,
-					 struct videobuf_buffer, stream);
-	} else if (req_events & (EPOLLIN | EPOLLRDNORM)) {
-		if (!q->reading)
-			__videobuf_read_start(q);
-		if (!q->reading) {
-			rc = EPOLLERR;
-		} else if (NULL == q->read_buf) {
-			q->read_buf = list_entry(q->stream.next,
-						 struct videobuf_buffer,
-						 stream);
-			list_del(&q->read_buf->stream);
-			q->read_off = 0;
-		}
-		buf = q->read_buf;
-	}
-	if (buf)
-		poll_wait(file, &buf->done, wait);
-	else
-		rc = EPOLLERR;
-
-	if (0 == rc) {
-		if (buf->state == VIDEOBUF_DONE ||
-		    buf->state == VIDEOBUF_ERROR) {
-			switch (q->type) {
-			case V4L2_BUF_TYPE_VIDEO_OUTPUT:
-			case V4L2_BUF_TYPE_VBI_OUTPUT:
-			case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
-			case V4L2_BUF_TYPE_SDR_OUTPUT:
-				rc = EPOLLOUT | EPOLLWRNORM;
-				break;
-			default:
-				rc = EPOLLIN | EPOLLRDNORM;
-				break;
-			}
-		}
-	}
-	videobuf_queue_unlock(q);
-	return rc;
-}
-EXPORT_SYMBOL_GPL(videobuf_poll_stream);
-
-int videobuf_mmap_mapper(struct videobuf_queue *q, struct vm_area_struct *vma)
-{
-	int rc = -EINVAL;
-	int i;
-
-	MAGIC_CHECK(q->int_ops->magic, MAGIC_QTYPE_OPS);
-
-	if (!(vma->vm_flags & VM_WRITE) || !(vma->vm_flags & VM_SHARED)) {
-		dprintk(1, "mmap appl bug: PROT_WRITE and MAP_SHARED are required\n");
-		return -EINVAL;
-	}
-
-	videobuf_queue_lock(q);
-	for (i = 0; i < VIDEO_MAX_FRAME; i++) {
-		struct videobuf_buffer *buf = q->bufs[i];
-
-		if (buf && buf->memory == V4L2_MEMORY_MMAP &&
-				buf->boff == (vma->vm_pgoff << PAGE_SHIFT)) {
-			rc = CALL(q, mmap_mapper, q, buf, vma);
-			break;
-		}
-	}
-	videobuf_queue_unlock(q);
-
-	return rc;
-}
-EXPORT_SYMBOL_GPL(videobuf_mmap_mapper);
diff --git a/drivers/media/v4l2-core/videobuf-dma-contig.c b/drivers/media/v4l2-core/videobuf-dma-contig.c
deleted file mode 100644
index 4c2ec7a0d8..0000000000
--- a/drivers/media/v4l2-core/videobuf-dma-contig.c
+++ /dev/null
@@ -1,402 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * helper functions for physically contiguous capture buffers
- *
- * The functions support hardware lacking scatter gather support
- * (i.e. the buffers must be linear in physical memory)
- *
- * Copyright (c) 2008 Magnus Damm
- *
- * Based on videobuf-vmalloc.c,
- * (c) 2007 Mauro Carvalho Chehab, <mchehab@kernel.org>
- */
-
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/mm.h>
-#include <linux/pagemap.h>
-#include <linux/dma-mapping.h>
-#include <linux/sched.h>
-#include <linux/slab.h>
-#include <media/videobuf-dma-contig.h>
-
-struct videobuf_dma_contig_memory {
-	u32 magic;
-	void *vaddr;
-	dma_addr_t dma_handle;
-	unsigned long size;
-};
-
-#define MAGIC_DC_MEM 0x0733ac61
-#define MAGIC_CHECK(is, should)						    \
-	if (unlikely((is) != (should)))	{				    \
-		pr_err("magic mismatch: %x expected %x\n", (is), (should)); \
-		BUG();							    \
-	}
-
-static int __videobuf_dc_alloc(struct device *dev,
-			       struct videobuf_dma_contig_memory *mem,
-			       unsigned long size)
-{
-	mem->size = size;
-	mem->vaddr = dma_alloc_coherent(dev, mem->size, &mem->dma_handle,
-					GFP_KERNEL);
-	if (!mem->vaddr) {
-		dev_err(dev, "memory alloc size %ld failed\n", mem->size);
-		return -ENOMEM;
-	}
-
-	dev_dbg(dev, "dma mapped data is at %p (%ld)\n", mem->vaddr, mem->size);
-
-	return 0;
-}
-
-static void __videobuf_dc_free(struct device *dev,
-			       struct videobuf_dma_contig_memory *mem)
-{
-	dma_free_coherent(dev, mem->size, mem->vaddr, mem->dma_handle);
-
-	mem->vaddr = NULL;
-}
-
-static void videobuf_vm_open(struct vm_area_struct *vma)
-{
-	struct videobuf_mapping *map = vma->vm_private_data;
-
-	dev_dbg(map->q->dev, "vm_open %p [count=%u,vma=%08lx-%08lx]\n",
-		map, map->count, vma->vm_start, vma->vm_end);
-
-	map->count++;
-}
-
-static void videobuf_vm_close(struct vm_area_struct *vma)
-{
-	struct videobuf_mapping *map = vma->vm_private_data;
-	struct videobuf_queue *q = map->q;
-	int i;
-
-	dev_dbg(q->dev, "vm_close %p [count=%u,vma=%08lx-%08lx]\n",
-		map, map->count, vma->vm_start, vma->vm_end);
-
-	map->count--;
-	if (0 == map->count) {
-		struct videobuf_dma_contig_memory *mem;
-
-		dev_dbg(q->dev, "munmap %p q=%p\n", map, q);
-		videobuf_queue_lock(q);
-
-		/* We need first to cancel streams, before unmapping */
-		if (q->streaming)
-			videobuf_queue_cancel(q);
-
-		for (i = 0; i < VIDEO_MAX_FRAME; i++) {
-			if (NULL == q->bufs[i])
-				continue;
-
-			if (q->bufs[i]->map != map)
-				continue;
-
-			mem = q->bufs[i]->priv;
-			if (mem) {
-				/* This callback is called only if kernel has
-				   allocated memory and this memory is mmapped.
-				   In this case, memory should be freed,
-				   in order to do memory unmap.
-				 */
-
-				MAGIC_CHECK(mem->magic, MAGIC_DC_MEM);
-
-				/* vfree is not atomic - can't be
-				   called with IRQ's disabled
-				 */
-				dev_dbg(q->dev, "buf[%d] freeing %p\n",
-					i, mem->vaddr);
-
-				__videobuf_dc_free(q->dev, mem);
-				mem->vaddr = NULL;
-			}
-
-			q->bufs[i]->map = NULL;
-			q->bufs[i]->baddr = 0;
-		}
-
-		kfree(map);
-
-		videobuf_queue_unlock(q);
-	}
-}
-
-static const struct vm_operations_struct videobuf_vm_ops = {
-	.open	= videobuf_vm_open,
-	.close	= videobuf_vm_close,
-};
-
-/**
- * videobuf_dma_contig_user_put() - reset pointer to user space buffer
- * @mem: per-buffer private videobuf-dma-contig data
- *
- * This function resets the user space pointer
- */
-static void videobuf_dma_contig_user_put(struct videobuf_dma_contig_memory *mem)
-{
-	mem->dma_handle = 0;
-	mem->size = 0;
-}
-
-/**
- * videobuf_dma_contig_user_get() - setup user space memory pointer
- * @mem: per-buffer private videobuf-dma-contig data
- * @vb: video buffer to map
- *
- * This function validates and sets up a pointer to user space memory.
- * Only physically contiguous pfn-mapped memory is accepted.
- *
- * Returns 0 if successful.
- */
-static int videobuf_dma_contig_user_get(struct videobuf_dma_contig_memory *mem,
-					struct videobuf_buffer *vb)
-{
-	unsigned long untagged_baddr = untagged_addr(vb->baddr);
-	struct mm_struct *mm = current->mm;
-	struct vm_area_struct *vma;
-	unsigned long prev_pfn, this_pfn;
-	unsigned long pages_done, user_address;
-	unsigned int offset;
-	int ret;
-
-	offset = untagged_baddr & ~PAGE_MASK;
-	mem->size = PAGE_ALIGN(vb->size + offset);
-	ret = -EINVAL;
-
-	mmap_read_lock(mm);
-
-	vma = find_vma(mm, untagged_baddr);
-	if (!vma)
-		goto out_up;
-
-	if ((untagged_baddr + mem->size) > vma->vm_end)
-		goto out_up;
-
-	pages_done = 0;
-	prev_pfn = 0; /* kill warning */
-	user_address = untagged_baddr;
-
-	while (pages_done < (mem->size >> PAGE_SHIFT)) {
-		ret = follow_pfn(vma, user_address, &this_pfn);
-		if (ret)
-			break;
-
-		if (pages_done == 0)
-			mem->dma_handle = (this_pfn << PAGE_SHIFT) + offset;
-		else if (this_pfn != (prev_pfn + 1))
-			ret = -EFAULT;
-
-		if (ret)
-			break;
-
-		prev_pfn = this_pfn;
-		user_address += PAGE_SIZE;
-		pages_done++;
-	}
-
-out_up:
-	mmap_read_unlock(current->mm);
-
-	return ret;
-}
-
-static struct videobuf_buffer *__videobuf_alloc(size_t size)
-{
-	struct videobuf_dma_contig_memory *mem;
-	struct videobuf_buffer *vb;
-
-	vb = kzalloc(size + sizeof(*mem), GFP_KERNEL);
-	if (vb) {
-		vb->priv = ((char *)vb) + size;
-		mem = vb->priv;
-		mem->magic = MAGIC_DC_MEM;
-	}
-
-	return vb;
-}
-
-static void *__videobuf_to_vaddr(struct videobuf_buffer *buf)
-{
-	struct videobuf_dma_contig_memory *mem = buf->priv;
-
-	BUG_ON(!mem);
-	MAGIC_CHECK(mem->magic, MAGIC_DC_MEM);
-
-	return mem->vaddr;
-}
-
-static int __videobuf_iolock(struct videobuf_queue *q,
-			     struct videobuf_buffer *vb,
-			     struct v4l2_framebuffer *fbuf)
-{
-	struct videobuf_dma_contig_memory *mem = vb->priv;
-
-	BUG_ON(!mem);
-	MAGIC_CHECK(mem->magic, MAGIC_DC_MEM);
-
-	switch (vb->memory) {
-	case V4L2_MEMORY_MMAP:
-		dev_dbg(q->dev, "%s memory method MMAP\n", __func__);
-
-		/* All handling should be done by __videobuf_mmap_mapper() */
-		if (!mem->vaddr) {
-			dev_err(q->dev, "memory is not allocated/mmapped.\n");
-			return -EINVAL;
-		}
-		break;
-	case V4L2_MEMORY_USERPTR:
-		dev_dbg(q->dev, "%s memory method USERPTR\n", __func__);
-
-		/* handle pointer from user space */
-		if (vb->baddr)
-			return videobuf_dma_contig_user_get(mem, vb);
-
-		/* allocate memory for the read() method */
-		if (__videobuf_dc_alloc(q->dev, mem, PAGE_ALIGN(vb->size)))
-			return -ENOMEM;
-		break;
-	case V4L2_MEMORY_OVERLAY:
-	default:
-		dev_dbg(q->dev, "%s memory method OVERLAY/unknown\n", __func__);
-		return -EINVAL;
-	}
-
-	return 0;
-}
-
-static int __videobuf_mmap_mapper(struct videobuf_queue *q,
-				  struct videobuf_buffer *buf,
-				  struct vm_area_struct *vma)
-{
-	struct videobuf_dma_contig_memory *mem;
-	struct videobuf_mapping *map;
-	int retval;
-
-	dev_dbg(q->dev, "%s\n", __func__);
-
-	/* create mapping + update buffer list */
-	map = kzalloc(sizeof(struct videobuf_mapping), GFP_KERNEL);
-	if (!map)
-		return -ENOMEM;
-
-	buf->map = map;
-	map->q = q;
-
-	buf->baddr = vma->vm_start;
-
-	mem = buf->priv;
-	BUG_ON(!mem);
-	MAGIC_CHECK(mem->magic, MAGIC_DC_MEM);
-
-	if (__videobuf_dc_alloc(q->dev, mem, PAGE_ALIGN(buf->bsize)))
-		goto error;
-
-	/* the "vm_pgoff" is just used in v4l2 to find the
-	 * corresponding buffer data structure which is allocated
-	 * earlier and it does not mean the offset from the physical
-	 * buffer start address as usual. So set it to 0 to pass
-	 * the sanity check in dma_mmap_coherent().
-	 */
-	vma->vm_pgoff = 0;
-	retval = dma_mmap_coherent(q->dev, vma, mem->vaddr, mem->dma_handle,
-				   mem->size);
-	if (retval) {
-		dev_err(q->dev, "mmap: remap failed with error %d. ",
-			retval);
-		dma_free_coherent(q->dev, mem->size,
-				  mem->vaddr, mem->dma_handle);
-		goto error;
-	}
-
-	vma->vm_ops = &videobuf_vm_ops;
-	vm_flags_set(vma, VM_DONTEXPAND);
-	vma->vm_private_data = map;
-
-	dev_dbg(q->dev, "mmap %p: q=%p %08lx-%08lx (%lx) pgoff %08lx buf %d\n",
-		map, q, vma->vm_start, vma->vm_end,
-		(long int)buf->bsize, vma->vm_pgoff, buf->i);
-
-	videobuf_vm_open(vma);
-
-	return 0;
-
-error:
-	kfree(map);
-	return -ENOMEM;
-}
-
-static struct videobuf_qtype_ops qops = {
-	.magic		= MAGIC_QTYPE_OPS,
-	.alloc_vb	= __videobuf_alloc,
-	.iolock		= __videobuf_iolock,
-	.mmap_mapper	= __videobuf_mmap_mapper,
-	.vaddr		= __videobuf_to_vaddr,
-};
-
-void videobuf_queue_dma_contig_init(struct videobuf_queue *q,
-				    const struct videobuf_queue_ops *ops,
-				    struct device *dev,
-				    spinlock_t *irqlock,
-				    enum v4l2_buf_type type,
-				    enum v4l2_field field,
-				    unsigned int msize,
-				    void *priv,
-				    struct mutex *ext_lock)
-{
-	videobuf_queue_core_init(q, ops, dev, irqlock, type, field, msize,
-				 priv, &qops, ext_lock);
-}
-EXPORT_SYMBOL_GPL(videobuf_queue_dma_contig_init);
-
-dma_addr_t videobuf_to_dma_contig(struct videobuf_buffer *buf)
-{
-	struct videobuf_dma_contig_memory *mem = buf->priv;
-
-	BUG_ON(!mem);
-	MAGIC_CHECK(mem->magic, MAGIC_DC_MEM);
-
-	return mem->dma_handle;
-}
-EXPORT_SYMBOL_GPL(videobuf_to_dma_contig);
-
-void videobuf_dma_contig_free(struct videobuf_queue *q,
-			      struct videobuf_buffer *buf)
-{
-	struct videobuf_dma_contig_memory *mem = buf->priv;
-
-	/* mmapped memory can't be freed here, otherwise mmapped region
-	   would be released, while still needed. In this case, the memory
-	   release should happen inside videobuf_vm_close().
-	   So, it should free memory only if the memory were allocated for
-	   read() operation.
-	 */
-	if (buf->memory != V4L2_MEMORY_USERPTR)
-		return;
-
-	if (!mem)
-		return;
-
-	MAGIC_CHECK(mem->magic, MAGIC_DC_MEM);
-
-	/* handle user space pointer case */
-	if (buf->baddr) {
-		videobuf_dma_contig_user_put(mem);
-		return;
-	}
-
-	/* read() method */
-	if (mem->vaddr) {
-		__videobuf_dc_free(q->dev, mem);
-		mem->vaddr = NULL;
-	}
-}
-EXPORT_SYMBOL_GPL(videobuf_dma_contig_free);
-
-MODULE_DESCRIPTION("helper module to manage video4linux dma contig buffers");
-MODULE_AUTHOR("Magnus Damm");
-MODULE_LICENSE("GPL");
diff --git a/drivers/media/v4l2-core/videobuf-dma-sg.c b/drivers/media/v4l2-core/videobuf-dma-sg.c
deleted file mode 100644
index 405b89ea10..0000000000
--- a/drivers/media/v4l2-core/videobuf-dma-sg.c
+++ /dev/null
@@ -1,681 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * helper functions for SG DMA video4linux capture buffers
- *
- * The functions expect the hardware being able to scatter gather
- * (i.e. the buffers are not linear in physical memory, but fragmented
- * into PAGE_SIZE chunks).  They also assume the driver does not need
- * to touch the video data.
- *
- * (c) 2007 Mauro Carvalho Chehab, <mchehab@kernel.org>
- *
- * Highly based on video-buf written originally by:
- * (c) 2001,02 Gerd Knorr <kraxel@bytesex.org>
- * (c) 2006 Mauro Carvalho Chehab, <mchehab@kernel.org>
- * (c) 2006 Ted Walther and John Sokol
- */
-
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/moduleparam.h>
-#include <linux/sched/mm.h>
-#include <linux/slab.h>
-#include <linux/interrupt.h>
-#include <linux/pgtable.h>
-
-#include <linux/dma-mapping.h>
-#include <linux/vmalloc.h>
-#include <linux/pagemap.h>
-#include <linux/scatterlist.h>
-#include <asm/page.h>
-
-#include <media/videobuf-dma-sg.h>
-
-#define MAGIC_DMABUF 0x19721112
-#define MAGIC_SG_MEM 0x17890714
-
-#define MAGIC_CHECK(is, should)						\
-	if (unlikely((is) != (should))) {				\
-		printk(KERN_ERR "magic mismatch: %x (expected %x)\n",	\
-				is, should);				\
-		BUG();							\
-	}
-
-static int debug;
-module_param(debug, int, 0644);
-
-MODULE_DESCRIPTION("helper module to manage video4linux dma sg buffers");
-MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@kernel.org>");
-MODULE_LICENSE("GPL");
-
-#define dprintk(level, fmt, arg...)					\
-	if (debug >= level)						\
-		printk(KERN_DEBUG "vbuf-sg: " fmt , ## arg)
-
-/* --------------------------------------------------------------------- */
-
-/*
- * Return a scatterlist for some page-aligned vmalloc()'ed memory
- * block (NULL on errors).  Memory for the scatterlist is allocated
- * using kmalloc.  The caller must free the memory.
- */
-static struct scatterlist *videobuf_vmalloc_to_sg(unsigned char *virt,
-						  int nr_pages)
-{
-	struct scatterlist *sglist;
-	struct page *pg;
-	int i;
-
-	sglist = vzalloc(array_size(nr_pages, sizeof(*sglist)));
-	if (NULL == sglist)
-		return NULL;
-	sg_init_table(sglist, nr_pages);
-	for (i = 0; i < nr_pages; i++, virt += PAGE_SIZE) {
-		pg = vmalloc_to_page(virt);
-		if (NULL == pg)
-			goto err;
-		BUG_ON(PageHighMem(pg));
-		sg_set_page(&sglist[i], pg, PAGE_SIZE, 0);
-	}
-	return sglist;
-
-err:
-	vfree(sglist);
-	return NULL;
-}
-
-/*
- * Return a scatterlist for a an array of userpages (NULL on errors).
- * Memory for the scatterlist is allocated using kmalloc.  The caller
- * must free the memory.
- */
-static struct scatterlist *videobuf_pages_to_sg(struct page **pages,
-					int nr_pages, int offset, size_t size)
-{
-	struct scatterlist *sglist;
-	int i;
-
-	if (NULL == pages[0])
-		return NULL;
-	sglist = vmalloc(array_size(nr_pages, sizeof(*sglist)));
-	if (NULL == sglist)
-		return NULL;
-	sg_init_table(sglist, nr_pages);
-
-	if (PageHighMem(pages[0]))
-		/* DMA to highmem pages might not work */
-		goto highmem;
-	sg_set_page(&sglist[0], pages[0],
-			min_t(size_t, PAGE_SIZE - offset, size), offset);
-	size -= min_t(size_t, PAGE_SIZE - offset, size);
-	for (i = 1; i < nr_pages; i++) {
-		if (NULL == pages[i])
-			goto nopage;
-		if (PageHighMem(pages[i]))
-			goto highmem;
-		sg_set_page(&sglist[i], pages[i], min_t(size_t, PAGE_SIZE, size), 0);
-		size -= min_t(size_t, PAGE_SIZE, size);
-	}
-	return sglist;
-
-nopage:
-	dprintk(2, "sgl: oops - no page\n");
-	vfree(sglist);
-	return NULL;
-
-highmem:
-	dprintk(2, "sgl: oops - highmem page\n");
-	vfree(sglist);
-	return NULL;
-}
-
-/* --------------------------------------------------------------------- */
-
-struct videobuf_dmabuf *videobuf_to_dma(struct videobuf_buffer *buf)
-{
-	struct videobuf_dma_sg_memory *mem = buf->priv;
-	BUG_ON(!mem);
-
-	MAGIC_CHECK(mem->magic, MAGIC_SG_MEM);
-
-	return &mem->dma;
-}
-EXPORT_SYMBOL_GPL(videobuf_to_dma);
-
-static void videobuf_dma_init(struct videobuf_dmabuf *dma)
-{
-	memset(dma, 0, sizeof(*dma));
-	dma->magic = MAGIC_DMABUF;
-}
-
-static int videobuf_dma_init_user_locked(struct videobuf_dmabuf *dma,
-			int direction, unsigned long data, unsigned long size)
-{
-	unsigned int gup_flags = FOLL_LONGTERM;
-	unsigned long first, last;
-	int err;
-
-	dma->direction = direction;
-	switch (dma->direction) {
-	case DMA_FROM_DEVICE:
-		gup_flags |= FOLL_WRITE;
-		break;
-	case DMA_TO_DEVICE:
-		break;
-	default:
-		BUG();
-	}
-
-	first = (data          & PAGE_MASK) >> PAGE_SHIFT;
-	last  = ((data+size-1) & PAGE_MASK) >> PAGE_SHIFT;
-	dma->offset = data & ~PAGE_MASK;
-	dma->size = size;
-	dma->nr_pages = last-first+1;
-	dma->pages = kmalloc_array(dma->nr_pages, sizeof(struct page *),
-				   GFP_KERNEL);
-	if (NULL == dma->pages)
-		return -ENOMEM;
-
-	dprintk(1, "init user [0x%lx+0x%lx => %lu pages]\n",
-		data, size, dma->nr_pages);
-
-	err = pin_user_pages(data & PAGE_MASK, dma->nr_pages, gup_flags,
-			     dma->pages);
-
-	if (err != dma->nr_pages) {
-		dma->nr_pages = (err >= 0) ? err : 0;
-		dprintk(1, "pin_user_pages: err=%d [%lu]\n", err,
-			dma->nr_pages);
-		return err < 0 ? err : -EINVAL;
-	}
-	return 0;
-}
-
-static int videobuf_dma_init_user(struct videobuf_dmabuf *dma, int direction,
-			   unsigned long data, unsigned long size)
-{
-	int ret;
-
-	mmap_read_lock(current->mm);
-	ret = videobuf_dma_init_user_locked(dma, direction, data, size);
-	mmap_read_unlock(current->mm);
-
-	return ret;
-}
-
-static int videobuf_dma_init_kernel(struct videobuf_dmabuf *dma, int direction,
-				    unsigned long nr_pages)
-{
-	int i;
-
-	dprintk(1, "init kernel [%lu pages]\n", nr_pages);
-
-	dma->direction = direction;
-	dma->vaddr_pages = kcalloc(nr_pages, sizeof(*dma->vaddr_pages),
-				   GFP_KERNEL);
-	if (!dma->vaddr_pages)
-		return -ENOMEM;
-
-	dma->dma_addr = kcalloc(nr_pages, sizeof(*dma->dma_addr), GFP_KERNEL);
-	if (!dma->dma_addr) {
-		kfree(dma->vaddr_pages);
-		return -ENOMEM;
-	}
-	for (i = 0; i < nr_pages; i++) {
-		void *addr;
-
-		addr = dma_alloc_coherent(dma->dev, PAGE_SIZE,
-					  &(dma->dma_addr[i]), GFP_KERNEL);
-		if (addr == NULL)
-			goto out_free_pages;
-
-		dma->vaddr_pages[i] = virt_to_page(addr);
-	}
-	dma->vaddr = vmap(dma->vaddr_pages, nr_pages, VM_MAP | VM_IOREMAP,
-			  PAGE_KERNEL);
-	if (NULL == dma->vaddr) {
-		dprintk(1, "vmalloc_32(%lu pages) failed\n", nr_pages);
-		goto out_free_pages;
-	}
-
-	dprintk(1, "vmalloc is at addr %p, size=%lu\n",
-		dma->vaddr, nr_pages << PAGE_SHIFT);
-
-	memset(dma->vaddr, 0, nr_pages << PAGE_SHIFT);
-	dma->nr_pages = nr_pages;
-
-	return 0;
-out_free_pages:
-	while (i > 0) {
-		void *addr;
-
-		i--;
-		addr = page_address(dma->vaddr_pages[i]);
-		dma_free_coherent(dma->dev, PAGE_SIZE, addr, dma->dma_addr[i]);
-	}
-	kfree(dma->dma_addr);
-	dma->dma_addr = NULL;
-	kfree(dma->vaddr_pages);
-	dma->vaddr_pages = NULL;
-
-	return -ENOMEM;
-
-}
-
-static int videobuf_dma_init_overlay(struct videobuf_dmabuf *dma, int direction,
-			      dma_addr_t addr, unsigned long nr_pages)
-{
-	dprintk(1, "init overlay [%lu pages @ bus 0x%lx]\n",
-		nr_pages, (unsigned long)addr);
-	dma->direction = direction;
-
-	if (0 == addr)
-		return -EINVAL;
-
-	dma->bus_addr = addr;
-	dma->nr_pages = nr_pages;
-
-	return 0;
-}
-
-static int videobuf_dma_map(struct device *dev, struct videobuf_dmabuf *dma)
-{
-	MAGIC_CHECK(dma->magic, MAGIC_DMABUF);
-	BUG_ON(0 == dma->nr_pages);
-
-	if (dma->pages) {
-		dma->sglist = videobuf_pages_to_sg(dma->pages, dma->nr_pages,
-						   dma->offset, dma->size);
-	}
-	if (dma->vaddr) {
-		dma->sglist = videobuf_vmalloc_to_sg(dma->vaddr,
-						     dma->nr_pages);
-	}
-	if (dma->bus_addr) {
-		dma->sglist = vmalloc(sizeof(*dma->sglist));
-		if (NULL != dma->sglist) {
-			dma->sglen = 1;
-			sg_dma_address(&dma->sglist[0])	= dma->bus_addr
-							& PAGE_MASK;
-			dma->sglist[0].offset = dma->bus_addr & ~PAGE_MASK;
-			sg_dma_len(&dma->sglist[0]) = dma->nr_pages * PAGE_SIZE;
-		}
-	}
-	if (NULL == dma->sglist) {
-		dprintk(1, "scatterlist is NULL\n");
-		return -ENOMEM;
-	}
-	if (!dma->bus_addr) {
-		dma->sglen = dma_map_sg(dev, dma->sglist,
-					dma->nr_pages, dma->direction);
-		if (0 == dma->sglen) {
-			printk(KERN_WARNING
-			       "%s: videobuf_map_sg failed\n", __func__);
-			vfree(dma->sglist);
-			dma->sglist = NULL;
-			dma->sglen = 0;
-			return -ENOMEM;
-		}
-	}
-
-	return 0;
-}
-
-int videobuf_dma_unmap(struct device *dev, struct videobuf_dmabuf *dma)
-{
-	MAGIC_CHECK(dma->magic, MAGIC_DMABUF);
-
-	if (!dma->sglen)
-		return 0;
-
-	dma_unmap_sg(dev, dma->sglist, dma->nr_pages, dma->direction);
-
-	vfree(dma->sglist);
-	dma->sglist = NULL;
-	dma->sglen = 0;
-
-	return 0;
-}
-EXPORT_SYMBOL_GPL(videobuf_dma_unmap);
-
-int videobuf_dma_free(struct videobuf_dmabuf *dma)
-{
-	int i;
-	MAGIC_CHECK(dma->magic, MAGIC_DMABUF);
-	BUG_ON(dma->sglen);
-
-	if (dma->pages) {
-		unpin_user_pages_dirty_lock(dma->pages, dma->nr_pages,
-					    dma->direction == DMA_FROM_DEVICE);
-		kfree(dma->pages);
-		dma->pages = NULL;
-	}
-
-	if (dma->dma_addr) {
-		for (i = 0; i < dma->nr_pages; i++) {
-			void *addr;
-
-			addr = page_address(dma->vaddr_pages[i]);
-			dma_free_coherent(dma->dev, PAGE_SIZE, addr,
-					  dma->dma_addr[i]);
-		}
-		kfree(dma->dma_addr);
-		dma->dma_addr = NULL;
-		kfree(dma->vaddr_pages);
-		dma->vaddr_pages = NULL;
-		vunmap(dma->vaddr);
-		dma->vaddr = NULL;
-	}
-
-	if (dma->bus_addr)
-		dma->bus_addr = 0;
-	dma->direction = DMA_NONE;
-
-	return 0;
-}
-EXPORT_SYMBOL_GPL(videobuf_dma_free);
-
-/* --------------------------------------------------------------------- */
-
-static void videobuf_vm_open(struct vm_area_struct *vma)
-{
-	struct videobuf_mapping *map = vma->vm_private_data;
-
-	dprintk(2, "vm_open %p [count=%d,vma=%08lx-%08lx]\n", map,
-		map->count, vma->vm_start, vma->vm_end);
-
-	map->count++;
-}
-
-static void videobuf_vm_close(struct vm_area_struct *vma)
-{
-	struct videobuf_mapping *map = vma->vm_private_data;
-	struct videobuf_queue *q = map->q;
-	struct videobuf_dma_sg_memory *mem;
-	int i;
-
-	dprintk(2, "vm_close %p [count=%d,vma=%08lx-%08lx]\n", map,
-		map->count, vma->vm_start, vma->vm_end);
-
-	map->count--;
-	if (0 == map->count) {
-		dprintk(1, "munmap %p q=%p\n", map, q);
-		videobuf_queue_lock(q);
-		for (i = 0; i < VIDEO_MAX_FRAME; i++) {
-			if (NULL == q->bufs[i])
-				continue;
-			mem = q->bufs[i]->priv;
-			if (!mem)
-				continue;
-
-			MAGIC_CHECK(mem->magic, MAGIC_SG_MEM);
-
-			if (q->bufs[i]->map != map)
-				continue;
-			q->bufs[i]->map   = NULL;
-			q->bufs[i]->baddr = 0;
-			q->ops->buf_release(q, q->bufs[i]);
-		}
-		videobuf_queue_unlock(q);
-		kfree(map);
-	}
-}
-
-/*
- * Get a anonymous page for the mapping.  Make sure we can DMA to that
- * memory location with 32bit PCI devices (i.e. don't use highmem for
- * now ...).  Bounce buffers don't work very well for the data rates
- * video capture has.
- */
-static vm_fault_t videobuf_vm_fault(struct vm_fault *vmf)
-{
-	struct vm_area_struct *vma = vmf->vma;
-	struct page *page;
-
-	dprintk(3, "fault: fault @ %08lx [vma %08lx-%08lx]\n",
-		vmf->address, vma->vm_start, vma->vm_end);
-
-	page = alloc_page(GFP_USER | __GFP_DMA32);
-	if (!page)
-		return VM_FAULT_OOM;
-	clear_user_highpage(page, vmf->address);
-	vmf->page = page;
-
-	return 0;
-}
-
-static const struct vm_operations_struct videobuf_vm_ops = {
-	.open	= videobuf_vm_open,
-	.close	= videobuf_vm_close,
-	.fault	= videobuf_vm_fault,
-};
-
-/* ---------------------------------------------------------------------
- * SG handlers for the generic methods
- */
-
-/* Allocated area consists on 3 parts:
-	struct video_buffer
-	struct <driver>_buffer (cx88_buffer, saa7134_buf, ...)
-	struct videobuf_dma_sg_memory
- */
-
-static struct videobuf_buffer *__videobuf_alloc_vb(size_t size)
-{
-	struct videobuf_dma_sg_memory *mem;
-	struct videobuf_buffer *vb;
-
-	vb = kzalloc(size + sizeof(*mem), GFP_KERNEL);
-	if (!vb)
-		return vb;
-
-	mem = vb->priv = ((char *)vb) + size;
-	mem->magic = MAGIC_SG_MEM;
-
-	videobuf_dma_init(&mem->dma);
-
-	dprintk(1, "%s: allocated at %p(%ld+%ld) & %p(%ld)\n",
-		__func__, vb, (long)sizeof(*vb), (long)size - sizeof(*vb),
-		mem, (long)sizeof(*mem));
-
-	return vb;
-}
-
-static void *__videobuf_to_vaddr(struct videobuf_buffer *buf)
-{
-	struct videobuf_dma_sg_memory *mem = buf->priv;
-	BUG_ON(!mem);
-
-	MAGIC_CHECK(mem->magic, MAGIC_SG_MEM);
-
-	return mem->dma.vaddr;
-}
-
-static int __videobuf_iolock(struct videobuf_queue *q,
-			     struct videobuf_buffer *vb,
-			     struct v4l2_framebuffer *fbuf)
-{
-	struct videobuf_dma_sg_memory *mem = vb->priv;
-	unsigned long pages;
-	dma_addr_t bus;
-	int err;
-
-	BUG_ON(!mem);
-
-	MAGIC_CHECK(mem->magic, MAGIC_SG_MEM);
-
-	if (!mem->dma.dev)
-		mem->dma.dev = q->dev;
-	else
-		WARN_ON(mem->dma.dev != q->dev);
-
-	switch (vb->memory) {
-	case V4L2_MEMORY_MMAP:
-	case V4L2_MEMORY_USERPTR:
-		if (0 == vb->baddr) {
-			/* no userspace addr -- kernel bounce buffer */
-			pages = PAGE_ALIGN(vb->size) >> PAGE_SHIFT;
-			err = videobuf_dma_init_kernel(&mem->dma,
-						       DMA_FROM_DEVICE,
-						       pages);
-			if (0 != err)
-				return err;
-		} else if (vb->memory == V4L2_MEMORY_USERPTR) {
-			/* dma directly to userspace */
-			err = videobuf_dma_init_user(&mem->dma,
-						     DMA_FROM_DEVICE,
-						     vb->baddr, vb->bsize);
-			if (0 != err)
-				return err;
-		} else {
-			/* NOTE: HACK: videobuf_iolock on V4L2_MEMORY_MMAP
-			buffers can only be called from videobuf_qbuf
-			we take current->mm->mmap_lock there, to prevent
-			locking inversion, so don't take it here */
-
-			err = videobuf_dma_init_user_locked(&mem->dma,
-						      DMA_FROM_DEVICE,
-						      vb->baddr, vb->bsize);
-			if (0 != err)
-				return err;
-		}
-		break;
-	case V4L2_MEMORY_OVERLAY:
-		if (NULL == fbuf)
-			return -EINVAL;
-		/* FIXME: need sanity checks for vb->boff */
-		/*
-		 * Using a double cast to avoid compiler warnings when
-		 * building for PAE. Compiler doesn't like direct casting
-		 * of a 32 bit ptr to 64 bit integer.
-		 */
-		bus   = (dma_addr_t)(unsigned long)fbuf->base + vb->boff;
-		pages = PAGE_ALIGN(vb->size) >> PAGE_SHIFT;
-		err = videobuf_dma_init_overlay(&mem->dma, DMA_FROM_DEVICE,
-						bus, pages);
-		if (0 != err)
-			return err;
-		break;
-	default:
-		BUG();
-	}
-	err = videobuf_dma_map(q->dev, &mem->dma);
-	if (0 != err)
-		return err;
-
-	return 0;
-}
-
-static int __videobuf_sync(struct videobuf_queue *q,
-			   struct videobuf_buffer *buf)
-{
-	struct videobuf_dma_sg_memory *mem = buf->priv;
-	BUG_ON(!mem || !mem->dma.sglen);
-
-	MAGIC_CHECK(mem->magic, MAGIC_SG_MEM);
-	MAGIC_CHECK(mem->dma.magic, MAGIC_DMABUF);
-
-	dma_sync_sg_for_cpu(q->dev, mem->dma.sglist,
-			    mem->dma.nr_pages, mem->dma.direction);
-
-	return 0;
-}
-
-static int __videobuf_mmap_mapper(struct videobuf_queue *q,
-				  struct videobuf_buffer *buf,
-				  struct vm_area_struct *vma)
-{
-	struct videobuf_dma_sg_memory *mem = buf->priv;
-	struct videobuf_mapping *map;
-	unsigned int first, last, size = 0, i;
-	int retval;
-
-	retval = -EINVAL;
-
-	BUG_ON(!mem);
-	MAGIC_CHECK(mem->magic, MAGIC_SG_MEM);
-
-	/* look for first buffer to map */
-	for (first = 0; first < VIDEO_MAX_FRAME; first++) {
-		if (buf == q->bufs[first]) {
-			size = PAGE_ALIGN(q->bufs[first]->bsize);
-			break;
-		}
-	}
-
-	/* paranoia, should never happen since buf is always valid. */
-	if (!size) {
-		dprintk(1, "mmap app bug: offset invalid [offset=0x%lx]\n",
-				(vma->vm_pgoff << PAGE_SHIFT));
-		goto done;
-	}
-
-	last = first;
-
-	/* create mapping + update buffer list */
-	retval = -ENOMEM;
-	map = kmalloc(sizeof(struct videobuf_mapping), GFP_KERNEL);
-	if (NULL == map)
-		goto done;
-
-	size = 0;
-	for (i = first; i <= last; i++) {
-		if (NULL == q->bufs[i])
-			continue;
-		q->bufs[i]->map   = map;
-		q->bufs[i]->baddr = vma->vm_start + size;
-		size += PAGE_ALIGN(q->bufs[i]->bsize);
-	}
-
-	map->count    = 1;
-	map->q        = q;
-	vma->vm_ops   = &videobuf_vm_ops;
-	/* using shared anonymous pages */
-	vm_flags_mod(vma, VM_DONTEXPAND | VM_DONTDUMP, VM_IO);
-	vma->vm_private_data = map;
-	dprintk(1, "mmap %p: q=%p %08lx-%08lx pgoff %08lx bufs %d-%d\n",
-		map, q, vma->vm_start, vma->vm_end, vma->vm_pgoff, first, last);
-	retval = 0;
-
-done:
-	return retval;
-}
-
-static struct videobuf_qtype_ops sg_ops = {
-	.magic        = MAGIC_QTYPE_OPS,
-
-	.alloc_vb     = __videobuf_alloc_vb,
-	.iolock       = __videobuf_iolock,
-	.sync         = __videobuf_sync,
-	.mmap_mapper  = __videobuf_mmap_mapper,
-	.vaddr        = __videobuf_to_vaddr,
-};
-
-void *videobuf_sg_alloc(size_t size)
-{
-	struct videobuf_queue q;
-
-	/* Required to make generic handler to call __videobuf_alloc */
-	q.int_ops = &sg_ops;
-
-	q.msize = size;
-
-	return videobuf_alloc_vb(&q);
-}
-EXPORT_SYMBOL_GPL(videobuf_sg_alloc);
-
-void videobuf_queue_sg_init(struct videobuf_queue *q,
-			 const struct videobuf_queue_ops *ops,
-			 struct device *dev,
-			 spinlock_t *irqlock,
-			 enum v4l2_buf_type type,
-			 enum v4l2_field field,
-			 unsigned int msize,
-			 void *priv,
-			 struct mutex *ext_lock)
-{
-	videobuf_queue_core_init(q, ops, dev, irqlock, type, field, msize,
-				 priv, &sg_ops, ext_lock);
-}
-EXPORT_SYMBOL_GPL(videobuf_queue_sg_init);
-
diff --git a/drivers/media/v4l2-core/videobuf-vmalloc.c b/drivers/media/v4l2-core/videobuf-vmalloc.c
deleted file mode 100644
index 85c7090606..0000000000
--- a/drivers/media/v4l2-core/videobuf-vmalloc.c
+++ /dev/null
@@ -1,326 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * helper functions for vmalloc video4linux capture buffers
- *
- * The functions expect the hardware being able to scatter gather
- * (i.e. the buffers are not linear in physical memory, but fragmented
- * into PAGE_SIZE chunks).  They also assume the driver does not need
- * to touch the video data.
- *
- * (c) 2007 Mauro Carvalho Chehab <mchehab@kernel.org>
- */
-
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/moduleparam.h>
-#include <linux/slab.h>
-#include <linux/interrupt.h>
-#include <linux/pgtable.h>
-
-#include <linux/pci.h>
-#include <linux/vmalloc.h>
-#include <linux/pagemap.h>
-#include <asm/page.h>
-
-#include <media/videobuf-vmalloc.h>
-
-#define MAGIC_DMABUF   0x17760309
-#define MAGIC_VMAL_MEM 0x18221223
-
-#define MAGIC_CHECK(is, should)						\
-	if (unlikely((is) != (should))) {				\
-		printk(KERN_ERR "magic mismatch: %x (expected %x)\n",	\
-				is, should);				\
-		BUG();							\
-	}
-
-static int debug;
-module_param(debug, int, 0644);
-
-MODULE_DESCRIPTION("helper module to manage video4linux vmalloc buffers");
-MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@kernel.org>");
-MODULE_LICENSE("GPL");
-
-#define dprintk(level, fmt, arg...)					\
-	if (debug >= level)						\
-		printk(KERN_DEBUG "vbuf-vmalloc: " fmt , ## arg)
-
-
-/***************************************************************************/
-
-static void videobuf_vm_open(struct vm_area_struct *vma)
-{
-	struct videobuf_mapping *map = vma->vm_private_data;
-
-	dprintk(2, "vm_open %p [count=%u,vma=%08lx-%08lx]\n", map,
-		map->count, vma->vm_start, vma->vm_end);
-
-	map->count++;
-}
-
-static void videobuf_vm_close(struct vm_area_struct *vma)
-{
-	struct videobuf_mapping *map = vma->vm_private_data;
-	struct videobuf_queue *q = map->q;
-	int i;
-
-	dprintk(2, "vm_close %p [count=%u,vma=%08lx-%08lx]\n", map,
-		map->count, vma->vm_start, vma->vm_end);
-
-	map->count--;
-	if (0 == map->count) {
-		struct videobuf_vmalloc_memory *mem;
-
-		dprintk(1, "munmap %p q=%p\n", map, q);
-		videobuf_queue_lock(q);
-
-		/* We need first to cancel streams, before unmapping */
-		if (q->streaming)
-			videobuf_queue_cancel(q);
-
-		for (i = 0; i < VIDEO_MAX_FRAME; i++) {
-			if (NULL == q->bufs[i])
-				continue;
-
-			if (q->bufs[i]->map != map)
-				continue;
-
-			mem = q->bufs[i]->priv;
-			if (mem) {
-				/* This callback is called only if kernel has
-				   allocated memory and this memory is mmapped.
-				   In this case, memory should be freed,
-				   in order to do memory unmap.
-				 */
-
-				MAGIC_CHECK(mem->magic, MAGIC_VMAL_MEM);
-
-				/* vfree is not atomic - can't be
-				   called with IRQ's disabled
-				 */
-				dprintk(1, "%s: buf[%d] freeing (%p)\n",
-					__func__, i, mem->vaddr);
-
-				vfree(mem->vaddr);
-				mem->vaddr = NULL;
-			}
-
-			q->bufs[i]->map   = NULL;
-			q->bufs[i]->baddr = 0;
-		}
-
-		kfree(map);
-
-		videobuf_queue_unlock(q);
-	}
-
-	return;
-}
-
-static const struct vm_operations_struct videobuf_vm_ops = {
-	.open     = videobuf_vm_open,
-	.close    = videobuf_vm_close,
-};
-
-/* ---------------------------------------------------------------------
- * vmalloc handlers for the generic methods
- */
-
-/* Allocated area consists on 3 parts:
-	struct video_buffer
-	struct <driver>_buffer (cx88_buffer, saa7134_buf, ...)
-	struct videobuf_dma_sg_memory
- */
-
-static struct videobuf_buffer *__videobuf_alloc_vb(size_t size)
-{
-	struct videobuf_vmalloc_memory *mem;
-	struct videobuf_buffer *vb;
-
-	vb = kzalloc(size + sizeof(*mem), GFP_KERNEL);
-	if (!vb)
-		return vb;
-
-	mem = vb->priv = ((char *)vb) + size;
-	mem->magic = MAGIC_VMAL_MEM;
-
-	dprintk(1, "%s: allocated at %p(%ld+%ld) & %p(%ld)\n",
-		__func__, vb, (long)sizeof(*vb), (long)size - sizeof(*vb),
-		mem, (long)sizeof(*mem));
-
-	return vb;
-}
-
-static int __videobuf_iolock(struct videobuf_queue *q,
-			     struct videobuf_buffer *vb,
-			     struct v4l2_framebuffer *fbuf)
-{
-	struct videobuf_vmalloc_memory *mem = vb->priv;
-	int pages;
-
-	BUG_ON(!mem);
-
-	MAGIC_CHECK(mem->magic, MAGIC_VMAL_MEM);
-
-	switch (vb->memory) {
-	case V4L2_MEMORY_MMAP:
-		dprintk(1, "%s memory method MMAP\n", __func__);
-
-		/* All handling should be done by __videobuf_mmap_mapper() */
-		if (!mem->vaddr) {
-			printk(KERN_ERR "memory is not allocated/mmapped.\n");
-			return -EINVAL;
-		}
-		break;
-	case V4L2_MEMORY_USERPTR:
-		pages = PAGE_ALIGN(vb->size);
-
-		dprintk(1, "%s memory method USERPTR\n", __func__);
-
-		if (vb->baddr) {
-			printk(KERN_ERR "USERPTR is currently not supported\n");
-			return -EINVAL;
-		}
-
-		/* The only USERPTR currently supported is the one needed for
-		 * read() method.
-		 */
-
-		mem->vaddr = vmalloc_user(pages);
-		if (!mem->vaddr) {
-			printk(KERN_ERR "vmalloc (%d pages) failed\n", pages);
-			return -ENOMEM;
-		}
-		dprintk(1, "vmalloc is at addr %p (%d pages)\n",
-			mem->vaddr, pages);
-		break;
-	case V4L2_MEMORY_OVERLAY:
-	default:
-		dprintk(1, "%s memory method OVERLAY/unknown\n", __func__);
-
-		/* Currently, doesn't support V4L2_MEMORY_OVERLAY */
-		printk(KERN_ERR "Memory method currently unsupported.\n");
-		return -EINVAL;
-	}
-
-	return 0;
-}
-
-static int __videobuf_mmap_mapper(struct videobuf_queue *q,
-				  struct videobuf_buffer *buf,
-				  struct vm_area_struct *vma)
-{
-	struct videobuf_vmalloc_memory *mem;
-	struct videobuf_mapping *map;
-	int retval, pages;
-
-	dprintk(1, "%s\n", __func__);
-
-	/* create mapping + update buffer list */
-	map = kzalloc(sizeof(struct videobuf_mapping), GFP_KERNEL);
-	if (NULL == map)
-		return -ENOMEM;
-
-	buf->map = map;
-	map->q     = q;
-
-	buf->baddr = vma->vm_start;
-
-	mem = buf->priv;
-	BUG_ON(!mem);
-	MAGIC_CHECK(mem->magic, MAGIC_VMAL_MEM);
-
-	pages = PAGE_ALIGN(vma->vm_end - vma->vm_start);
-	mem->vaddr = vmalloc_user(pages);
-	if (!mem->vaddr) {
-		printk(KERN_ERR "vmalloc (%d pages) failed\n", pages);
-		goto error;
-	}
-	dprintk(1, "vmalloc is at addr %p (%d pages)\n", mem->vaddr, pages);
-
-	/* Try to remap memory */
-	retval = remap_vmalloc_range(vma, mem->vaddr, 0);
-	if (retval < 0) {
-		printk(KERN_ERR "mmap: remap failed with error %d. ", retval);
-		vfree(mem->vaddr);
-		goto error;
-	}
-
-	vma->vm_ops          = &videobuf_vm_ops;
-	vm_flags_set(vma, VM_DONTEXPAND | VM_DONTDUMP);
-	vma->vm_private_data = map;
-
-	dprintk(1, "mmap %p: q=%p %08lx-%08lx (%lx) pgoff %08lx buf %d\n",
-		map, q, vma->vm_start, vma->vm_end,
-		(long int)buf->bsize,
-		vma->vm_pgoff, buf->i);
-
-	videobuf_vm_open(vma);
-
-	return 0;
-
-error:
-	mem = NULL;
-	kfree(map);
-	return -ENOMEM;
-}
-
-static struct videobuf_qtype_ops qops = {
-	.magic        = MAGIC_QTYPE_OPS,
-
-	.alloc_vb     = __videobuf_alloc_vb,
-	.iolock       = __videobuf_iolock,
-	.mmap_mapper  = __videobuf_mmap_mapper,
-	.vaddr        = videobuf_to_vmalloc,
-};
-
-void videobuf_queue_vmalloc_init(struct videobuf_queue *q,
-			 const struct videobuf_queue_ops *ops,
-			 struct device *dev,
-			 spinlock_t *irqlock,
-			 enum v4l2_buf_type type,
-			 enum v4l2_field field,
-			 unsigned int msize,
-			 void *priv,
-			 struct mutex *ext_lock)
-{
-	videobuf_queue_core_init(q, ops, dev, irqlock, type, field, msize,
-				 priv, &qops, ext_lock);
-}
-EXPORT_SYMBOL_GPL(videobuf_queue_vmalloc_init);
-
-void *videobuf_to_vmalloc(struct videobuf_buffer *buf)
-{
-	struct videobuf_vmalloc_memory *mem = buf->priv;
-	BUG_ON(!mem);
-	MAGIC_CHECK(mem->magic, MAGIC_VMAL_MEM);
-
-	return mem->vaddr;
-}
-EXPORT_SYMBOL_GPL(videobuf_to_vmalloc);
-
-void videobuf_vmalloc_free(struct videobuf_buffer *buf)
-{
-	struct videobuf_vmalloc_memory *mem = buf->priv;
-
-	/* mmapped memory can't be freed here, otherwise mmapped region
-	   would be released, while still needed. In this case, the memory
-	   release should happen inside videobuf_vm_close().
-	   So, it should free memory only if the memory were allocated for
-	   read() operation.
-	 */
-	if ((buf->memory != V4L2_MEMORY_USERPTR) || buf->baddr)
-		return;
-
-	if (!mem)
-		return;
-
-	MAGIC_CHECK(mem->magic, MAGIC_VMAL_MEM);
-
-	vfree(mem->vaddr);
-	mem->vaddr = NULL;
-
-	return;
-}
-EXPORT_SYMBOL_GPL(videobuf_vmalloc_free);
-