media: platform: rename exynos-gsc/ to samsung/exynos-gsc/

As the end goal is to have platform drivers split by vendor,
rename exynos-gsc/ to samsung/exynos-gsc/.

Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>

1 files changed, 0 insertions, 794 deletions

diff --git a/drivers/media/platform/exynos-gsc/gsc-m2m.c b/drivers/media/platform/exynos-gsc/gsc-m2m.c
deleted file mode 100644
index f1cf847d1cc2..000000000000
--- a/drivers/media/platform/exynos-gsc/gsc-m2m.c
+++ /dev/null
@@ -1,794 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * Copyright (c) 2011 - 2012 Samsung Electronics Co., Ltd.
- *		http://www.samsung.com
- *
- * Samsung EXYNOS5 SoC series G-Scaler driver
- */
-
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/types.h>
-#include <linux/errno.h>
-#include <linux/bug.h>
-#include <linux/interrupt.h>
-#include <linux/workqueue.h>
-#include <linux/device.h>
-#include <linux/platform_device.h>
-#include <linux/list.h>
-#include <linux/io.h>
-#include <linux/slab.h>
-#include <linux/clk.h>
-
-#include <media/v4l2-ioctl.h>
-
-#include "gsc-core.h"
-
-static int gsc_m2m_ctx_stop_req(struct gsc_ctx *ctx)
-{
-	struct gsc_ctx *curr_ctx;
-	struct gsc_dev *gsc = ctx->gsc_dev;
-	int ret;
-
-	curr_ctx = v4l2_m2m_get_curr_priv(gsc->m2m.m2m_dev);
-	if (!gsc_m2m_pending(gsc) || (curr_ctx != ctx))
-		return 0;
-
-	gsc_ctx_state_lock_set(GSC_CTX_STOP_REQ, ctx);
-	ret = wait_event_timeout(gsc->irq_queue,
-			!gsc_ctx_state_is_set(GSC_CTX_STOP_REQ, ctx),
-			GSC_SHUTDOWN_TIMEOUT);
-
-	return ret == 0 ? -ETIMEDOUT : ret;
-}
-
-static void __gsc_m2m_job_abort(struct gsc_ctx *ctx)
-{
-	int ret;
-
-	ret = gsc_m2m_ctx_stop_req(ctx);
-	if ((ret == -ETIMEDOUT) || (ctx->state & GSC_CTX_ABORT)) {
-		gsc_ctx_state_lock_clear(GSC_CTX_STOP_REQ | GSC_CTX_ABORT, ctx);
-		gsc_m2m_job_finish(ctx, VB2_BUF_STATE_ERROR);
-	}
-}
-
-static int gsc_m2m_start_streaming(struct vb2_queue *q, unsigned int count)
-{
-	struct gsc_ctx *ctx = q->drv_priv;
-
-	return pm_runtime_resume_and_get(&ctx->gsc_dev->pdev->dev);
-}
-
-static void __gsc_m2m_cleanup_queue(struct gsc_ctx *ctx)
-{
-	struct vb2_v4l2_buffer *src_vb, *dst_vb;
-
-	while (v4l2_m2m_num_src_bufs_ready(ctx->m2m_ctx) > 0) {
-		src_vb = v4l2_m2m_src_buf_remove(ctx->m2m_ctx);
-		v4l2_m2m_buf_done(src_vb, VB2_BUF_STATE_ERROR);
-	}
-
-	while (v4l2_m2m_num_dst_bufs_ready(ctx->m2m_ctx) > 0) {
-		dst_vb = v4l2_m2m_dst_buf_remove(ctx->m2m_ctx);
-		v4l2_m2m_buf_done(dst_vb, VB2_BUF_STATE_ERROR);
-	}
-}
-
-static void gsc_m2m_stop_streaming(struct vb2_queue *q)
-{
-	struct gsc_ctx *ctx = q->drv_priv;
-
-	__gsc_m2m_job_abort(ctx);
-
-	__gsc_m2m_cleanup_queue(ctx);
-
-	pm_runtime_put(&ctx->gsc_dev->pdev->dev);
-}
-
-void gsc_m2m_job_finish(struct gsc_ctx *ctx, int vb_state)
-{
-	struct vb2_v4l2_buffer *src_vb, *dst_vb;
-
-	if (!ctx || !ctx->m2m_ctx)
-		return;
-
-	src_vb = v4l2_m2m_src_buf_remove(ctx->m2m_ctx);
-	dst_vb = v4l2_m2m_dst_buf_remove(ctx->m2m_ctx);
-
-	if (src_vb && dst_vb) {
-		dst_vb->vb2_buf.timestamp = src_vb->vb2_buf.timestamp;
-		dst_vb->timecode = src_vb->timecode;
-		dst_vb->flags &= ~V4L2_BUF_FLAG_TSTAMP_SRC_MASK;
-		dst_vb->flags |=
-			src_vb->flags
-			& V4L2_BUF_FLAG_TSTAMP_SRC_MASK;
-
-		v4l2_m2m_buf_done(src_vb, vb_state);
-		v4l2_m2m_buf_done(dst_vb, vb_state);
-
-		v4l2_m2m_job_finish(ctx->gsc_dev->m2m.m2m_dev,
-				    ctx->m2m_ctx);
-	}
-}
-
-static void gsc_m2m_job_abort(void *priv)
-{
-	__gsc_m2m_job_abort((struct gsc_ctx *)priv);
-}
-
-static int gsc_get_bufs(struct gsc_ctx *ctx)
-{
-	struct gsc_frame *s_frame, *d_frame;
-	struct vb2_v4l2_buffer *src_vb, *dst_vb;
-	int ret;
-
-	s_frame = &ctx->s_frame;
-	d_frame = &ctx->d_frame;
-
-	src_vb = v4l2_m2m_next_src_buf(ctx->m2m_ctx);
-	ret = gsc_prepare_addr(ctx, &src_vb->vb2_buf, s_frame, &s_frame->addr);
-	if (ret)
-		return ret;
-
-	dst_vb = v4l2_m2m_next_dst_buf(ctx->m2m_ctx);
-	ret = gsc_prepare_addr(ctx, &dst_vb->vb2_buf, d_frame, &d_frame->addr);
-	if (ret)
-		return ret;
-
-	dst_vb->vb2_buf.timestamp = src_vb->vb2_buf.timestamp;
-
-	return 0;
-}
-
-static void gsc_m2m_device_run(void *priv)
-{
-	struct gsc_ctx *ctx = priv;
-	struct gsc_dev *gsc;
-	unsigned long flags;
-	int ret;
-	bool is_set = false;
-
-	if (WARN(!ctx, "null hardware context\n"))
-		return;
-
-	gsc = ctx->gsc_dev;
-	spin_lock_irqsave(&gsc->slock, flags);
-
-	set_bit(ST_M2M_PEND, &gsc->state);
-
-	/* Reconfigure hardware if the context has changed. */
-	if (gsc->m2m.ctx != ctx) {
-		pr_debug("gsc->m2m.ctx = 0x%p, current_ctx = 0x%p",
-				gsc->m2m.ctx, ctx);
-		ctx->state |= GSC_PARAMS;
-		gsc->m2m.ctx = ctx;
-	}
-
-	is_set = ctx->state & GSC_CTX_STOP_REQ;
-	if (is_set) {
-		ctx->state &= ~GSC_CTX_STOP_REQ;
-		ctx->state |= GSC_CTX_ABORT;
-		wake_up(&gsc->irq_queue);
-		goto put_device;
-	}
-
-	ret = gsc_get_bufs(ctx);
-	if (ret) {
-		pr_err("Wrong address");
-		goto put_device;
-	}
-
-	gsc_set_prefbuf(gsc, &ctx->s_frame);
-	gsc_hw_set_input_addr(gsc, &ctx->s_frame.addr, GSC_M2M_BUF_NUM);
-	gsc_hw_set_output_addr(gsc, &ctx->d_frame.addr, GSC_M2M_BUF_NUM);
-
-	if (ctx->state & GSC_PARAMS) {
-		gsc_hw_set_input_buf_masking(gsc, GSC_M2M_BUF_NUM, false);
-		gsc_hw_set_output_buf_masking(gsc, GSC_M2M_BUF_NUM, false);
-		gsc_hw_set_frm_done_irq_mask(gsc, false);
-		gsc_hw_set_gsc_irq_enable(gsc, true);
-
-		if (gsc_set_scaler_info(ctx)) {
-			pr_err("Scaler setup error");
-			goto put_device;
-		}
-
-		gsc_hw_set_input_path(ctx);
-		gsc_hw_set_in_size(ctx);
-		gsc_hw_set_in_image_format(ctx);
-
-		gsc_hw_set_output_path(ctx);
-		gsc_hw_set_out_size(ctx);
-		gsc_hw_set_out_image_format(ctx);
-
-		gsc_hw_set_prescaler(ctx);
-		gsc_hw_set_mainscaler(ctx);
-		gsc_hw_set_rotation(ctx);
-		gsc_hw_set_global_alpha(ctx);
-	}
-
-	/* update shadow registers */
-	gsc_hw_set_sfr_update(ctx);
-
-	ctx->state &= ~GSC_PARAMS;
-	gsc_hw_enable_control(gsc, true);
-
-	spin_unlock_irqrestore(&gsc->slock, flags);
-	return;
-
-put_device:
-	ctx->state &= ~GSC_PARAMS;
-	spin_unlock_irqrestore(&gsc->slock, flags);
-}
-
-static int gsc_m2m_queue_setup(struct vb2_queue *vq,
-			unsigned int *num_buffers, unsigned int *num_planes,
-			unsigned int sizes[], struct device *alloc_devs[])
-{
-	struct gsc_ctx *ctx = vb2_get_drv_priv(vq);
-	struct gsc_frame *frame;
-	int i;
-
-	frame = ctx_get_frame(ctx, vq->type);
-	if (IS_ERR(frame))
-		return PTR_ERR(frame);
-
-	if (!frame->fmt)
-		return -EINVAL;
-
-	*num_planes = frame->fmt->num_planes;
-	for (i = 0; i < frame->fmt->num_planes; i++)
-		sizes[i] = frame->payload[i];
-	return 0;
-}
-
-static int gsc_m2m_buf_prepare(struct vb2_buffer *vb)
-{
-	struct gsc_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
-	struct gsc_frame *frame;
-	int i;
-
-	frame = ctx_get_frame(ctx, vb->vb2_queue->type);
-	if (IS_ERR(frame))
-		return PTR_ERR(frame);
-
-	if (V4L2_TYPE_IS_CAPTURE(vb->vb2_queue->type)) {
-		for (i = 0; i < frame->fmt->num_planes; i++)
-			vb2_set_plane_payload(vb, i, frame->payload[i]);
-	}
-
-	return 0;
-}
-
-static void gsc_m2m_buf_queue(struct vb2_buffer *vb)
-{
-	struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
-	struct gsc_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
-
-	pr_debug("ctx: %p, ctx->state: 0x%x", ctx, ctx->state);
-
-	if (ctx->m2m_ctx)
-		v4l2_m2m_buf_queue(ctx->m2m_ctx, vbuf);
-}
-
-static const struct vb2_ops gsc_m2m_qops = {
-	.queue_setup	 = gsc_m2m_queue_setup,
-	.buf_prepare	 = gsc_m2m_buf_prepare,
-	.buf_queue	 = gsc_m2m_buf_queue,
-	.wait_prepare	 = vb2_ops_wait_prepare,
-	.wait_finish	 = vb2_ops_wait_finish,
-	.stop_streaming	 = gsc_m2m_stop_streaming,
-	.start_streaming = gsc_m2m_start_streaming,
-};
-
-static int gsc_m2m_querycap(struct file *file, void *fh,
-			   struct v4l2_capability *cap)
-{
-	struct gsc_ctx *ctx = fh_to_ctx(fh);
-	struct gsc_dev *gsc = ctx->gsc_dev;
-
-	strscpy(cap->driver, GSC_MODULE_NAME, sizeof(cap->driver));
-	strscpy(cap->card, GSC_MODULE_NAME " gscaler", sizeof(cap->card));
-	snprintf(cap->bus_info, sizeof(cap->bus_info), "platform:%s",
-		 dev_name(&gsc->pdev->dev));
-	return 0;
-}
-
-static int gsc_m2m_enum_fmt(struct file *file, void *priv,
-			    struct v4l2_fmtdesc *f)
-{
-	return gsc_enum_fmt(f);
-}
-
-static int gsc_m2m_g_fmt_mplane(struct file *file, void *fh,
-			     struct v4l2_format *f)
-{
-	struct gsc_ctx *ctx = fh_to_ctx(fh);
-
-	return gsc_g_fmt_mplane(ctx, f);
-}
-
-static int gsc_m2m_try_fmt_mplane(struct file *file, void *fh,
-				  struct v4l2_format *f)
-{
-	struct gsc_ctx *ctx = fh_to_ctx(fh);
-
-	return gsc_try_fmt_mplane(ctx, f);
-}
-
-static int gsc_m2m_s_fmt_mplane(struct file *file, void *fh,
-				 struct v4l2_format *f)
-{
-	struct gsc_ctx *ctx = fh_to_ctx(fh);
-	struct vb2_queue *vq;
-	struct gsc_frame *frame;
-	struct v4l2_pix_format_mplane *pix;
-	int i, ret = 0;
-
-	ret = gsc_m2m_try_fmt_mplane(file, fh, f);
-	if (ret)
-		return ret;
-
-	vq = v4l2_m2m_get_vq(ctx->m2m_ctx, f->type);
-
-	if (vb2_is_streaming(vq)) {
-		pr_err("queue (%d) busy", f->type);
-		return -EBUSY;
-	}
-
-	if (V4L2_TYPE_IS_OUTPUT(f->type))
-		frame = &ctx->s_frame;
-	else
-		frame = &ctx->d_frame;
-
-	pix = &f->fmt.pix_mp;
-	frame->fmt = find_fmt(&pix->pixelformat, NULL, 0);
-	frame->colorspace = pix->colorspace;
-	if (!frame->fmt)
-		return -EINVAL;
-
-	for (i = 0; i < frame->fmt->num_planes; i++)
-		frame->payload[i] = pix->plane_fmt[i].sizeimage;
-
-	gsc_set_frame_size(frame, pix->width, pix->height);
-
-	if (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
-		gsc_ctx_state_lock_set(GSC_PARAMS | GSC_DST_FMT, ctx);
-	else
-		gsc_ctx_state_lock_set(GSC_PARAMS | GSC_SRC_FMT, ctx);
-
-	pr_debug("f_w: %d, f_h: %d", frame->f_width, frame->f_height);
-
-	return 0;
-}
-
-static int gsc_m2m_reqbufs(struct file *file, void *fh,
-			  struct v4l2_requestbuffers *reqbufs)
-{
-	struct gsc_ctx *ctx = fh_to_ctx(fh);
-	struct gsc_dev *gsc = ctx->gsc_dev;
-	u32 max_cnt;
-
-	max_cnt = (reqbufs->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) ?
-		gsc->variant->in_buf_cnt : gsc->variant->out_buf_cnt;
-	if (reqbufs->count > max_cnt)
-		return -EINVAL;
-
-	return v4l2_m2m_reqbufs(file, ctx->m2m_ctx, reqbufs);
-}
-
-static int gsc_m2m_expbuf(struct file *file, void *fh,
-				struct v4l2_exportbuffer *eb)
-{
-	struct gsc_ctx *ctx = fh_to_ctx(fh);
-	return v4l2_m2m_expbuf(file, ctx->m2m_ctx, eb);
-}
-
-static int gsc_m2m_querybuf(struct file *file, void *fh,
-					struct v4l2_buffer *buf)
-{
-	struct gsc_ctx *ctx = fh_to_ctx(fh);
-	return v4l2_m2m_querybuf(file, ctx->m2m_ctx, buf);
-}
-
-static int gsc_m2m_qbuf(struct file *file, void *fh,
-			  struct v4l2_buffer *buf)
-{
-	struct gsc_ctx *ctx = fh_to_ctx(fh);
-	return v4l2_m2m_qbuf(file, ctx->m2m_ctx, buf);
-}
-
-static int gsc_m2m_dqbuf(struct file *file, void *fh,
-			   struct v4l2_buffer *buf)
-{
-	struct gsc_ctx *ctx = fh_to_ctx(fh);
-	return v4l2_m2m_dqbuf(file, ctx->m2m_ctx, buf);
-}
-
-static int gsc_m2m_streamon(struct file *file, void *fh,
-			   enum v4l2_buf_type type)
-{
-	struct gsc_ctx *ctx = fh_to_ctx(fh);
-
-	/* The source and target color format need to be set */
-	if (V4L2_TYPE_IS_OUTPUT(type)) {
-		if (!gsc_ctx_state_is_set(GSC_SRC_FMT, ctx))
-			return -EINVAL;
-	} else if (!gsc_ctx_state_is_set(GSC_DST_FMT, ctx)) {
-		return -EINVAL;
-	}
-
-	return v4l2_m2m_streamon(file, ctx->m2m_ctx, type);
-}
-
-static int gsc_m2m_streamoff(struct file *file, void *fh,
-			    enum v4l2_buf_type type)
-{
-	struct gsc_ctx *ctx = fh_to_ctx(fh);
-	return v4l2_m2m_streamoff(file, ctx->m2m_ctx, type);
-}
-
-/* Return 1 if rectangle a is enclosed in rectangle b, or 0 otherwise. */
-static int is_rectangle_enclosed(struct v4l2_rect *a, struct v4l2_rect *b)
-{
-	if (a->left < b->left || a->top < b->top)
-		return 0;
-
-	if (a->left + a->width > b->left + b->width)
-		return 0;
-
-	if (a->top + a->height > b->top + b->height)
-		return 0;
-
-	return 1;
-}
-
-static int gsc_m2m_g_selection(struct file *file, void *fh,
-			struct v4l2_selection *s)
-{
-	struct gsc_frame *frame;
-	struct gsc_ctx *ctx = fh_to_ctx(fh);
-
-	if ((s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) &&
-	    (s->type != V4L2_BUF_TYPE_VIDEO_OUTPUT))
-		return -EINVAL;
-
-	frame = ctx_get_frame(ctx, s->type);
-	if (IS_ERR(frame))
-		return PTR_ERR(frame);
-
-	switch (s->target) {
-	case V4L2_SEL_TGT_COMPOSE_DEFAULT:
-	case V4L2_SEL_TGT_COMPOSE_BOUNDS:
-	case V4L2_SEL_TGT_CROP_BOUNDS:
-	case V4L2_SEL_TGT_CROP_DEFAULT:
-		s->r.left = 0;
-		s->r.top = 0;
-		s->r.width = frame->f_width;
-		s->r.height = frame->f_height;
-		return 0;
-
-	case V4L2_SEL_TGT_COMPOSE:
-	case V4L2_SEL_TGT_CROP:
-		s->r.left = frame->crop.left;
-		s->r.top = frame->crop.top;
-		s->r.width = frame->crop.width;
-		s->r.height = frame->crop.height;
-		return 0;
-	}
-
-	return -EINVAL;
-}
-
-static int gsc_m2m_s_selection(struct file *file, void *fh,
-				struct v4l2_selection *s)
-{
-	struct gsc_frame *frame;
-	struct gsc_ctx *ctx = fh_to_ctx(fh);
-	struct gsc_variant *variant = ctx->gsc_dev->variant;
-	struct v4l2_selection sel = *s;
-	int ret;
-
-	if ((s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) &&
-	    (s->type != V4L2_BUF_TYPE_VIDEO_OUTPUT))
-		return -EINVAL;
-
-	ret = gsc_try_selection(ctx, &sel);
-	if (ret)
-		return ret;
-
-	if (s->flags & V4L2_SEL_FLAG_LE &&
-	    !is_rectangle_enclosed(&sel.r, &s->r))
-		return -ERANGE;
-
-	if (s->flags & V4L2_SEL_FLAG_GE &&
-	    !is_rectangle_enclosed(&s->r, &sel.r))
-		return -ERANGE;
-
-	s->r = sel.r;
-
-	switch (s->target) {
-	case V4L2_SEL_TGT_COMPOSE_BOUNDS:
-	case V4L2_SEL_TGT_COMPOSE_DEFAULT:
-	case V4L2_SEL_TGT_COMPOSE:
-		frame = &ctx->s_frame;
-		break;
-
-	case V4L2_SEL_TGT_CROP_BOUNDS:
-	case V4L2_SEL_TGT_CROP:
-	case V4L2_SEL_TGT_CROP_DEFAULT:
-		frame = &ctx->d_frame;
-		break;
-
-	default:
-		return -EINVAL;
-	}
-
-	/* Check to see if scaling ratio is within supported range */
-	if (gsc_ctx_state_is_set(GSC_DST_FMT | GSC_SRC_FMT, ctx)) {
-		if (s->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
-			ret = gsc_check_scaler_ratio(variant, sel.r.width,
-				sel.r.height, ctx->d_frame.crop.width,
-				ctx->d_frame.crop.height,
-				ctx->gsc_ctrls.rotate->val, ctx->out_path);
-		} else {
-			ret = gsc_check_scaler_ratio(variant,
-				ctx->s_frame.crop.width,
-				ctx->s_frame.crop.height, sel.r.width,
-				sel.r.height, ctx->gsc_ctrls.rotate->val,
-				ctx->out_path);
-		}
-
-		if (ret) {
-			pr_err("Out of scaler range");
-			return -EINVAL;
-		}
-	}
-
-	frame->crop = sel.r;
-
-	gsc_ctx_state_lock_set(GSC_PARAMS, ctx);
-	return 0;
-}
-
-static const struct v4l2_ioctl_ops gsc_m2m_ioctl_ops = {
-	.vidioc_querycap		= gsc_m2m_querycap,
-	.vidioc_enum_fmt_vid_cap	= gsc_m2m_enum_fmt,
-	.vidioc_enum_fmt_vid_out	= gsc_m2m_enum_fmt,
-	.vidioc_g_fmt_vid_cap_mplane	= gsc_m2m_g_fmt_mplane,
-	.vidioc_g_fmt_vid_out_mplane	= gsc_m2m_g_fmt_mplane,
-	.vidioc_try_fmt_vid_cap_mplane	= gsc_m2m_try_fmt_mplane,
-	.vidioc_try_fmt_vid_out_mplane	= gsc_m2m_try_fmt_mplane,
-	.vidioc_s_fmt_vid_cap_mplane	= gsc_m2m_s_fmt_mplane,
-	.vidioc_s_fmt_vid_out_mplane	= gsc_m2m_s_fmt_mplane,
-	.vidioc_reqbufs			= gsc_m2m_reqbufs,
-	.vidioc_expbuf                  = gsc_m2m_expbuf,
-	.vidioc_querybuf		= gsc_m2m_querybuf,
-	.vidioc_qbuf			= gsc_m2m_qbuf,
-	.vidioc_dqbuf			= gsc_m2m_dqbuf,
-	.vidioc_streamon		= gsc_m2m_streamon,
-	.vidioc_streamoff		= gsc_m2m_streamoff,
-	.vidioc_g_selection		= gsc_m2m_g_selection,
-	.vidioc_s_selection		= gsc_m2m_s_selection
-};
-
-static int queue_init(void *priv, struct vb2_queue *src_vq,
-			struct vb2_queue *dst_vq)
-{
-	struct gsc_ctx *ctx = priv;
-	int ret;
-
-	memset(src_vq, 0, sizeof(*src_vq));
-	src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;
-	src_vq->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
-	src_vq->drv_priv = ctx;
-	src_vq->ops = &gsc_m2m_qops;
-	src_vq->mem_ops = &vb2_dma_contig_memops;
-	src_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
-	src_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
-	src_vq->lock = &ctx->gsc_dev->lock;
-	src_vq->dev = &ctx->gsc_dev->pdev->dev;
-
-	ret = vb2_queue_init(src_vq);
-	if (ret)
-		return ret;
-
-	memset(dst_vq, 0, sizeof(*dst_vq));
-	dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
-	dst_vq->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
-	dst_vq->drv_priv = ctx;
-	dst_vq->ops = &gsc_m2m_qops;
-	dst_vq->mem_ops = &vb2_dma_contig_memops;
-	dst_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
-	dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
-	dst_vq->lock = &ctx->gsc_dev->lock;
-	dst_vq->dev = &ctx->gsc_dev->pdev->dev;
-
-	return vb2_queue_init(dst_vq);
-}
-
-static int gsc_m2m_open(struct file *file)
-{
-	struct gsc_dev *gsc = video_drvdata(file);
-	struct gsc_ctx *ctx = NULL;
-	int ret;
-
-	pr_debug("pid: %d, state: 0x%lx", task_pid_nr(current), gsc->state);
-
-	if (mutex_lock_interruptible(&gsc->lock))
-		return -ERESTARTSYS;
-
-	ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
-	if (!ctx) {
-		ret = -ENOMEM;
-		goto unlock;
-	}
-
-	v4l2_fh_init(&ctx->fh, gsc->m2m.vfd);
-	ret = gsc_ctrls_create(ctx);
-	if (ret)
-		goto error_fh;
-
-	/* Use separate control handler per file handle */
-	ctx->fh.ctrl_handler = &ctx->ctrl_handler;
-	file->private_data = &ctx->fh;
-	v4l2_fh_add(&ctx->fh);
-
-	ctx->gsc_dev = gsc;
-	/* Default color format */
-	ctx->s_frame.fmt = get_format(0);
-	ctx->d_frame.fmt = get_format(0);
-	/* Setup the device context for mem2mem mode. */
-	ctx->state = GSC_CTX_M2M;
-	ctx->flags = 0;
-	ctx->in_path = GSC_DMA;
-	ctx->out_path = GSC_DMA;
-
-	ctx->m2m_ctx = v4l2_m2m_ctx_init(gsc->m2m.m2m_dev, ctx, queue_init);
-	if (IS_ERR(ctx->m2m_ctx)) {
-		pr_err("Failed to initialize m2m context");
-		ret = PTR_ERR(ctx->m2m_ctx);
-		goto error_ctrls;
-	}
-
-	if (gsc->m2m.refcnt++ == 0)
-		set_bit(ST_M2M_OPEN, &gsc->state);
-
-	pr_debug("gsc m2m driver is opened, ctx(0x%p)", ctx);
-
-	mutex_unlock(&gsc->lock);
-	return 0;
-
-error_ctrls:
-	gsc_ctrls_delete(ctx);
-	v4l2_fh_del(&ctx->fh);
-error_fh:
-	v4l2_fh_exit(&ctx->fh);
-	kfree(ctx);
-unlock:
-	mutex_unlock(&gsc->lock);
-	return ret;
-}
-
-static int gsc_m2m_release(struct file *file)
-{
-	struct gsc_ctx *ctx = fh_to_ctx(file->private_data);
-	struct gsc_dev *gsc = ctx->gsc_dev;
-
-	pr_debug("pid: %d, state: 0x%lx, refcnt= %d",
-		task_pid_nr(current), gsc->state, gsc->m2m.refcnt);
-
-	mutex_lock(&gsc->lock);
-
-	v4l2_m2m_ctx_release(ctx->m2m_ctx);
-	gsc_ctrls_delete(ctx);
-	v4l2_fh_del(&ctx->fh);
-	v4l2_fh_exit(&ctx->fh);
-
-	if (--gsc->m2m.refcnt <= 0)
-		clear_bit(ST_M2M_OPEN, &gsc->state);
-	kfree(ctx);
-
-	mutex_unlock(&gsc->lock);
-	return 0;
-}
-
-static __poll_t gsc_m2m_poll(struct file *file,
-					struct poll_table_struct *wait)
-{
-	struct gsc_ctx *ctx = fh_to_ctx(file->private_data);
-	struct gsc_dev *gsc = ctx->gsc_dev;
-	__poll_t ret;
-
-	if (mutex_lock_interruptible(&gsc->lock))
-		return EPOLLERR;
-
-	ret = v4l2_m2m_poll(file, ctx->m2m_ctx, wait);
-	mutex_unlock(&gsc->lock);
-
-	return ret;
-}
-
-static int gsc_m2m_mmap(struct file *file, struct vm_area_struct *vma)
-{
-	struct gsc_ctx *ctx = fh_to_ctx(file->private_data);
-	struct gsc_dev *gsc = ctx->gsc_dev;
-	int ret;
-
-	if (mutex_lock_interruptible(&gsc->lock))
-		return -ERESTARTSYS;
-
-	ret = v4l2_m2m_mmap(file, ctx->m2m_ctx, vma);
-	mutex_unlock(&gsc->lock);
-
-	return ret;
-}
-
-static const struct v4l2_file_operations gsc_m2m_fops = {
-	.owner		= THIS_MODULE,
-	.open		= gsc_m2m_open,
-	.release	= gsc_m2m_release,
-	.poll		= gsc_m2m_poll,
-	.unlocked_ioctl	= video_ioctl2,
-	.mmap		= gsc_m2m_mmap,
-};
-
-static const struct v4l2_m2m_ops gsc_m2m_ops = {
-	.device_run	= gsc_m2m_device_run,
-	.job_abort	= gsc_m2m_job_abort,
-};
-
-int gsc_register_m2m_device(struct gsc_dev *gsc)
-{
-	struct platform_device *pdev;
-	int ret;
-
-	if (!gsc)
-		return -ENODEV;
-
-	pdev = gsc->pdev;
-
-	gsc->vdev.fops		= &gsc_m2m_fops;
-	gsc->vdev.ioctl_ops	= &gsc_m2m_ioctl_ops;
-	gsc->vdev.release	= video_device_release_empty;
-	gsc->vdev.lock		= &gsc->lock;
-	gsc->vdev.vfl_dir	= VFL_DIR_M2M;
-	gsc->vdev.v4l2_dev	= &gsc->v4l2_dev;
-	gsc->vdev.device_caps	= V4L2_CAP_STREAMING |
-				  V4L2_CAP_VIDEO_M2M_MPLANE;
-	snprintf(gsc->vdev.name, sizeof(gsc->vdev.name), "%s.%d:m2m",
-					GSC_MODULE_NAME, gsc->id);
-
-	video_set_drvdata(&gsc->vdev, gsc);
-
-	gsc->m2m.vfd = &gsc->vdev;
-	gsc->m2m.m2m_dev = v4l2_m2m_init(&gsc_m2m_ops);
-	if (IS_ERR(gsc->m2m.m2m_dev)) {
-		dev_err(&pdev->dev, "failed to initialize v4l2-m2m device\n");
-		return PTR_ERR(gsc->m2m.m2m_dev);
-	}
-
-	ret = video_register_device(&gsc->vdev, VFL_TYPE_VIDEO, -1);
-	if (ret) {
-		dev_err(&pdev->dev,
-			 "%s(): failed to register video device\n", __func__);
-		goto err_m2m_release;
-	}
-
-	pr_debug("gsc m2m driver registered as /dev/video%d", gsc->vdev.num);
-	return 0;
-
-err_m2m_release:
-	v4l2_m2m_release(gsc->m2m.m2m_dev);
-
-	return ret;
-}
-
-void gsc_unregister_m2m_device(struct gsc_dev *gsc)
-{
-	if (gsc) {
-		v4l2_m2m_release(gsc->m2m.m2m_dev);
-		video_unregister_device(&gsc->vdev);
-	}
-}