1 files changed, 20 insertions, 472 deletions

diff --git a/drivers/media/platform/renesas/rcar-vin/rcar-v4l2.c b/drivers/media/platform/renesas/rcar-vin/rcar-v4l2.c
index db091af57c19..62eddf3a35fc 100644
--- a/drivers/media/platform/renesas/rcar-vin/rcar-v4l2.c
+++ b/drivers/media/platform/renesas/rcar-vin/rcar-v4l2.c
@@ -2,12 +2,11 @@
 /*
  * Driver for Renesas R-Car VIN
  *
+ * Copyright (C) 2025 Niklas Söderlund <niklas.soderlund@ragnatech.se>
  * Copyright (C) 2016 Renesas Electronics Corp.
  * Copyright (C) 2011-2013 Renesas Solutions Corp.
  * Copyright (C) 2013 Cogent Embedded, Inc., <source@cogentembedded.com>
  * Copyright (C) 2008 Magnus Damm
- *
- * Based on the soc-camera rcar_vin driver
  */
 
 #include <linux/pm_runtime.h>
@@ -230,101 +229,6 @@ static void rvin_format_align(struct rvin_dev *vin, struct v4l2_pix_format *pix)
  * V4L2
  */
 
-static int rvin_reset_format(struct rvin_dev *vin)
-{
-	struct v4l2_subdev_format fmt = {
-		.which = V4L2_SUBDEV_FORMAT_ACTIVE,
-		.pad = vin->parallel.source_pad,
-	};
-	int ret;
-
-	ret = v4l2_subdev_call(vin_to_source(vin), pad, get_fmt, NULL, &fmt);
-	if (ret)
-		return ret;
-
-	v4l2_fill_pix_format(&vin->format, &fmt.format);
-
-	vin->crop.top = 0;
-	vin->crop.left = 0;
-	vin->crop.width = vin->format.width;
-	vin->crop.height = vin->format.height;
-
-	/*  Make use of the hardware interlacer by default. */
-	if (vin->format.field == V4L2_FIELD_ALTERNATE) {
-		vin->format.field = V4L2_FIELD_INTERLACED;
-		vin->format.height *= 2;
-	}
-
-	rvin_format_align(vin, &vin->format);
-
-	vin->compose.top = 0;
-	vin->compose.left = 0;
-	vin->compose.width = vin->format.width;
-	vin->compose.height = vin->format.height;
-
-	return 0;
-}
-
-static int rvin_try_format(struct rvin_dev *vin, u32 which,
-			   struct v4l2_pix_format *pix,
-			   struct v4l2_rect *src_rect)
-{
-	struct v4l2_subdev *sd = vin_to_source(vin);
-	struct v4l2_subdev_state *sd_state;
-	static struct lock_class_key key;
-	struct v4l2_subdev_format format = {
-		.which = which,
-		.pad = vin->parallel.source_pad,
-	};
-	enum v4l2_field field;
-	u32 width, height;
-	int ret;
-
-	/*
-	 * FIXME: Drop this call, drivers are not supposed to use
-	 * __v4l2_subdev_state_alloc().
-	 */
-	sd_state = __v4l2_subdev_state_alloc(sd, "rvin:state->lock", &key);
-	if (IS_ERR(sd_state))
-		return PTR_ERR(sd_state);
-
-	if (!rvin_format_from_pixel(vin, pix->pixelformat))
-		pix->pixelformat = RVIN_DEFAULT_FORMAT;
-
-	v4l2_fill_mbus_format(&format.format, pix, vin->mbus_code);
-
-	/* Allow the video device to override field and to scale */
-	field = pix->field;
-	width = pix->width;
-	height = pix->height;
-
-	ret = v4l2_subdev_call(sd, pad, set_fmt, sd_state, &format);
-	if (ret < 0 && ret != -ENOIOCTLCMD)
-		goto done;
-	ret = 0;
-
-	v4l2_fill_pix_format(pix, &format.format);
-
-	if (src_rect) {
-		src_rect->top = 0;
-		src_rect->left = 0;
-		src_rect->width = pix->width;
-		src_rect->height = pix->height;
-	}
-
-	if (field != V4L2_FIELD_ANY)
-		pix->field = field;
-
-	pix->width = width;
-	pix->height = height;
-
-	rvin_format_align(vin, pix);
-done:
-	__v4l2_subdev_state_free(sd_state);
-
-	return ret;
-}
-
 static int rvin_querycap(struct file *file, void *priv,
 			 struct v4l2_capability *cap)
 {
@@ -333,42 +237,6 @@ static int rvin_querycap(struct file *file, void *priv,
 	return 0;
 }
 
-static int rvin_try_fmt_vid_cap(struct file *file, void *priv,
-				struct v4l2_format *f)
-{
-	struct rvin_dev *vin = video_drvdata(file);
-
-	return rvin_try_format(vin, V4L2_SUBDEV_FORMAT_TRY, &f->fmt.pix, NULL);
-}
-
-static int rvin_s_fmt_vid_cap(struct file *file, void *priv,
-			      struct v4l2_format *f)
-{
-	struct rvin_dev *vin = video_drvdata(file);
-	struct v4l2_rect fmt_rect, src_rect;
-	int ret;
-
-	if (vb2_is_busy(&vin->queue))
-		return -EBUSY;
-
-	ret = rvin_try_format(vin, V4L2_SUBDEV_FORMAT_ACTIVE, &f->fmt.pix,
-			      &src_rect);
-	if (ret)
-		return ret;
-
-	vin->format = f->fmt.pix;
-
-	fmt_rect.top = 0;
-	fmt_rect.left = 0;
-	fmt_rect.width = vin->format.width;
-	fmt_rect.height = vin->format.height;
-
-	v4l2_rect_map_inside(&vin->crop, &src_rect);
-	v4l2_rect_map_inside(&vin->compose, &fmt_rect);
-
-	return 0;
-}
-
 static int rvin_g_fmt_vid_cap(struct file *file, void *priv,
 			      struct v4l2_format *f)
 {
@@ -465,6 +333,7 @@ static int rvin_enum_fmt_vid_cap(struct file *file, void *priv,
 
 static int rvin_remote_rectangle(struct rvin_dev *vin, struct v4l2_rect *rect)
 {
+	struct media_pad *pad = media_pad_remote_pad_first(&vin->pad);
 	struct v4l2_subdev_format fmt = {
 		.which = V4L2_SUBDEV_FORMAT_ACTIVE,
 	};
@@ -472,18 +341,11 @@ static int rvin_remote_rectangle(struct rvin_dev *vin, struct v4l2_rect *rect)
 	unsigned int index;
 	int ret;
 
-	if (vin->info->use_mc) {
-		struct media_pad *pad = media_pad_remote_pad_first(&vin->pad);
-
-		if (!pad)
-			return -EINVAL;
+	if (!pad)
+		return -EINVAL;
 
-		sd = media_entity_to_v4l2_subdev(pad->entity);
-		index = pad->index;
-	} else {
-		sd = vin_to_source(vin);
-		index = vin->parallel.source_pad;
-	}
+	sd = media_entity_to_v4l2_subdev(pad->entity);
+	index = pad->index;
 
 	fmt.pad = index;
 	ret = v4l2_subdev_call(sd, pad, get_fmt, NULL, &fmt);
@@ -623,284 +485,18 @@ static int rvin_s_selection(struct file *file, void *fh,
 	return 0;
 }
 
-static int rvin_g_parm(struct file *file, void *priv,
-		       struct v4l2_streamparm *parm)
-{
-	struct rvin_dev *vin = video_drvdata(file);
-	struct v4l2_subdev *sd = vin_to_source(vin);
-
-	return v4l2_g_parm_cap(&vin->vdev, sd, parm);
-}
-
-static int rvin_s_parm(struct file *file, void *priv,
-		       struct v4l2_streamparm *parm)
-{
-	struct rvin_dev *vin = video_drvdata(file);
-	struct v4l2_subdev *sd = vin_to_source(vin);
-
-	return v4l2_s_parm_cap(&vin->vdev, sd, parm);
-}
-
-static int rvin_g_pixelaspect(struct file *file, void *priv,
-			      int type, struct v4l2_fract *f)
-{
-	struct rvin_dev *vin = video_drvdata(file);
-	struct v4l2_subdev *sd = vin_to_source(vin);
-
-	if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
-		return -EINVAL;
-
-	return v4l2_subdev_call(sd, video, g_pixelaspect, f);
-}
-
-static int rvin_enum_input(struct file *file, void *priv,
-			   struct v4l2_input *i)
-{
-	struct rvin_dev *vin = video_drvdata(file);
-	struct v4l2_subdev *sd = vin_to_source(vin);
-	int ret;
-
-	if (i->index != 0)
-		return -EINVAL;
-
-	ret = v4l2_subdev_call(sd, video, g_input_status, &i->status);
-	if (ret < 0 && ret != -ENOIOCTLCMD && ret != -ENODEV)
-		return ret;
-
-	i->type = V4L2_INPUT_TYPE_CAMERA;
-
-	if (v4l2_subdev_has_op(sd, pad, dv_timings_cap)) {
-		i->capabilities = V4L2_IN_CAP_DV_TIMINGS;
-		i->std = 0;
-	} else {
-		i->capabilities = V4L2_IN_CAP_STD;
-		i->std = vin->vdev.tvnorms;
-	}
-
-	strscpy(i->name, "Camera", sizeof(i->name));
-
-	return 0;
-}
-
-static int rvin_g_input(struct file *file, void *priv, unsigned int *i)
-{
-	*i = 0;
-	return 0;
-}
-
-static int rvin_s_input(struct file *file, void *priv, unsigned int i)
-{
-	if (i > 0)
-		return -EINVAL;
-	return 0;
-}
-
-static int rvin_querystd(struct file *file, void *priv, v4l2_std_id *a)
-{
-	struct rvin_dev *vin = video_drvdata(file);
-	struct v4l2_subdev *sd = vin_to_source(vin);
-
-	return v4l2_subdev_call(sd, video, querystd, a);
-}
-
-static int rvin_s_std(struct file *file, void *priv, v4l2_std_id a)
-{
-	struct rvin_dev *vin = video_drvdata(file);
-	int ret;
-
-	ret = v4l2_subdev_call(vin_to_source(vin), video, s_std, a);
-	if (ret < 0)
-		return ret;
-
-	vin->std = a;
-
-	/* Changing the standard will change the width/height */
-	return rvin_reset_format(vin);
-}
-
-static int rvin_g_std(struct file *file, void *priv, v4l2_std_id *a)
-{
-	struct rvin_dev *vin = video_drvdata(file);
-
-	if (v4l2_subdev_has_op(vin_to_source(vin), pad, dv_timings_cap))
-		return -ENOIOCTLCMD;
-
-	*a = vin->std;
-
-	return 0;
-}
-
 static int rvin_subscribe_event(struct v4l2_fh *fh,
 				const struct v4l2_event_subscription *sub)
 {
 	switch (sub->type) {
+	case V4L2_EVENT_FRAME_SYNC:
+		return v4l2_event_subscribe(fh, sub, 2, NULL);
 	case V4L2_EVENT_SOURCE_CHANGE:
 		return v4l2_event_subscribe(fh, sub, 4, NULL);
 	}
 	return v4l2_ctrl_subscribe_event(fh, sub);
 }
 
-static int rvin_enum_dv_timings(struct file *file, void *priv_fh,
-				struct v4l2_enum_dv_timings *timings)
-{
-	struct rvin_dev *vin = video_drvdata(file);
-	struct v4l2_subdev *sd = vin_to_source(vin);
-	int ret;
-
-	if (timings->pad)
-		return -EINVAL;
-
-	timings->pad = vin->parallel.sink_pad;
-
-	ret = v4l2_subdev_call(sd, pad, enum_dv_timings, timings);
-
-	timings->pad = 0;
-
-	return ret;
-}
-
-static int rvin_s_dv_timings(struct file *file, void *priv_fh,
-			     struct v4l2_dv_timings *timings)
-{
-	struct rvin_dev *vin = video_drvdata(file);
-	struct v4l2_subdev *sd = vin_to_source(vin);
-	int ret;
-
-	ret = v4l2_subdev_call(sd, pad, s_dv_timings,
-			       vin->parallel.sink_pad, timings);
-	if (ret)
-		return ret;
-
-	/* Changing the timings will change the width/height */
-	return rvin_reset_format(vin);
-}
-
-static int rvin_g_dv_timings(struct file *file, void *priv_fh,
-			     struct v4l2_dv_timings *timings)
-{
-	struct rvin_dev *vin = video_drvdata(file);
-	struct v4l2_subdev *sd = vin_to_source(vin);
-
-	return v4l2_subdev_call(sd, pad, g_dv_timings,
-				vin->parallel.sink_pad, timings);
-}
-
-static int rvin_query_dv_timings(struct file *file, void *priv_fh,
-				 struct v4l2_dv_timings *timings)
-{
-	struct rvin_dev *vin = video_drvdata(file);
-	struct v4l2_subdev *sd = vin_to_source(vin);
-
-	return v4l2_subdev_call(sd, pad, query_dv_timings,
-				vin->parallel.sink_pad, timings);
-}
-
-static int rvin_dv_timings_cap(struct file *file, void *priv_fh,
-			       struct v4l2_dv_timings_cap *cap)
-{
-	struct rvin_dev *vin = video_drvdata(file);
-	struct v4l2_subdev *sd = vin_to_source(vin);
-	int ret;
-
-	if (cap->pad)
-		return -EINVAL;
-
-	cap->pad = vin->parallel.sink_pad;
-
-	ret = v4l2_subdev_call(sd, pad, dv_timings_cap, cap);
-
-	cap->pad = 0;
-
-	return ret;
-}
-
-static int rvin_g_edid(struct file *file, void *fh, struct v4l2_edid *edid)
-{
-	struct rvin_dev *vin = video_drvdata(file);
-	struct v4l2_subdev *sd = vin_to_source(vin);
-	int ret;
-
-	if (edid->pad)
-		return -EINVAL;
-
-	edid->pad = vin->parallel.sink_pad;
-
-	ret = v4l2_subdev_call(sd, pad, get_edid, edid);
-
-	edid->pad = 0;
-
-	return ret;
-}
-
-static int rvin_s_edid(struct file *file, void *fh, struct v4l2_edid *edid)
-{
-	struct rvin_dev *vin = video_drvdata(file);
-	struct v4l2_subdev *sd = vin_to_source(vin);
-	int ret;
-
-	if (edid->pad)
-		return -EINVAL;
-
-	edid->pad = vin->parallel.sink_pad;
-
-	ret = v4l2_subdev_call(sd, pad, set_edid, edid);
-
-	edid->pad = 0;
-
-	return ret;
-}
-
-static const struct v4l2_ioctl_ops rvin_ioctl_ops = {
-	.vidioc_querycap		= rvin_querycap,
-	.vidioc_try_fmt_vid_cap		= rvin_try_fmt_vid_cap,
-	.vidioc_g_fmt_vid_cap		= rvin_g_fmt_vid_cap,
-	.vidioc_s_fmt_vid_cap		= rvin_s_fmt_vid_cap,
-	.vidioc_enum_fmt_vid_cap	= rvin_enum_fmt_vid_cap,
-
-	.vidioc_g_selection		= rvin_g_selection,
-	.vidioc_s_selection		= rvin_s_selection,
-
-	.vidioc_g_parm			= rvin_g_parm,
-	.vidioc_s_parm			= rvin_s_parm,
-
-	.vidioc_g_pixelaspect		= rvin_g_pixelaspect,
-
-	.vidioc_enum_input		= rvin_enum_input,
-	.vidioc_g_input			= rvin_g_input,
-	.vidioc_s_input			= rvin_s_input,
-
-	.vidioc_dv_timings_cap		= rvin_dv_timings_cap,
-	.vidioc_enum_dv_timings		= rvin_enum_dv_timings,
-	.vidioc_g_dv_timings		= rvin_g_dv_timings,
-	.vidioc_s_dv_timings		= rvin_s_dv_timings,
-	.vidioc_query_dv_timings	= rvin_query_dv_timings,
-
-	.vidioc_g_edid			= rvin_g_edid,
-	.vidioc_s_edid			= rvin_s_edid,
-
-	.vidioc_querystd		= rvin_querystd,
-	.vidioc_g_std			= rvin_g_std,
-	.vidioc_s_std			= rvin_s_std,
-
-	.vidioc_reqbufs			= vb2_ioctl_reqbufs,
-	.vidioc_create_bufs		= vb2_ioctl_create_bufs,
-	.vidioc_querybuf		= vb2_ioctl_querybuf,
-	.vidioc_qbuf			= vb2_ioctl_qbuf,
-	.vidioc_dqbuf			= vb2_ioctl_dqbuf,
-	.vidioc_expbuf			= vb2_ioctl_expbuf,
-	.vidioc_prepare_buf		= vb2_ioctl_prepare_buf,
-	.vidioc_streamon		= vb2_ioctl_streamon,
-	.vidioc_streamoff		= vb2_ioctl_streamoff,
-
-	.vidioc_log_status		= v4l2_ctrl_log_status,
-	.vidioc_subscribe_event		= rvin_subscribe_event,
-	.vidioc_unsubscribe_event	= v4l2_event_unsubscribe,
-};
-
-/* -----------------------------------------------------------------------------
- * V4L2 Media Controller
- */
-
 static void rvin_mc_try_format(struct rvin_dev *vin,
 			       struct v4l2_pix_format *pix)
 {
@@ -979,19 +575,6 @@ static const struct v4l2_ioctl_ops rvin_mc_ioctl_ops = {
  * File Operations
  */
 
-static int rvin_power_parallel(struct rvin_dev *vin, bool on)
-{
-	struct v4l2_subdev *sd = vin_to_source(vin);
-	int power = on ? 1 : 0;
-	int ret;
-
-	ret = v4l2_subdev_call(sd, core, s_power, power);
-	if (ret < 0 && ret != -ENOIOCTLCMD && ret != -ENODEV)
-		return ret;
-
-	return 0;
-}
-
 static int rvin_open(struct file *file)
 {
 	struct rvin_dev *vin = video_drvdata(file);
@@ -1011,11 +594,7 @@ static int rvin_open(struct file *file)
 	if (ret)
 		goto err_unlock;
 
-	if (vin->info->use_mc)
-		ret = v4l2_pipeline_pm_get(&vin->vdev.entity);
-	else if (v4l2_fh_is_singular_file(file))
-		ret = rvin_power_parallel(vin, true);
-
+	ret = v4l2_pipeline_pm_get(&vin->vdev.entity);
 	if (ret < 0)
 		goto err_open;
 
@@ -1027,10 +606,7 @@ static int rvin_open(struct file *file)
 
 	return 0;
 err_power:
-	if (vin->info->use_mc)
-		v4l2_pipeline_pm_put(&vin->vdev.entity);
-	else if (v4l2_fh_is_singular_file(file))
-		rvin_power_parallel(vin, false);
+	v4l2_pipeline_pm_put(&vin->vdev.entity);
 err_open:
 	v4l2_fh_release(file);
 err_unlock:
@@ -1044,23 +620,14 @@ err_pm:
 static int rvin_release(struct file *file)
 {
 	struct rvin_dev *vin = video_drvdata(file);
-	bool fh_singular;
 	int ret;
 
 	mutex_lock(&vin->lock);
 
-	/* Save the singular status before we call the clean-up helper */
-	fh_singular = v4l2_fh_is_singular_file(file);
-
 	/* the release helper will cleanup any on-going streaming */
 	ret = _vb2_fop_release(file, NULL);
 
-	if (vin->info->use_mc) {
-		v4l2_pipeline_pm_put(&vin->vdev.entity);
-	} else {
-		if (fh_singular)
-			rvin_power_parallel(vin, false);
-	}
+	v4l2_pipeline_pm_put(&vin->vdev.entity);
 
 	mutex_unlock(&vin->lock);
 
@@ -1091,18 +658,6 @@ void rvin_v4l2_unregister(struct rvin_dev *vin)
 	video_unregister_device(&vin->vdev);
 }
 
-static void rvin_notify_video_device(struct rvin_dev *vin,
-				     unsigned int notification, void *arg)
-{
-	switch (notification) {
-	case V4L2_DEVICE_NOTIFY_EVENT:
-		v4l2_event_queue(&vin->vdev, arg);
-		break;
-	default:
-		break;
-	}
-}
-
 static void rvin_notify(struct v4l2_subdev *sd,
 			unsigned int notification, void *arg)
 {
@@ -1113,12 +668,6 @@ static void rvin_notify(struct v4l2_subdev *sd,
 		container_of(sd->v4l2_dev, struct rvin_dev, v4l2_dev);
 	unsigned int i;
 
-	/* If no media controller, no need to route the event. */
-	if (!vin->info->use_mc) {
-		rvin_notify_video_device(vin, notification, arg);
-		return;
-	}
-
 	group = vin->group;
 
 	for (i = 0; i < RCAR_VIN_NUM; i++) {
@@ -1134,7 +683,13 @@ static void rvin_notify(struct v4l2_subdev *sd,
 		if (remote != sd)
 			continue;
 
-		rvin_notify_video_device(vin, notification, arg);
+		switch (notification) {
+		case V4L2_DEVICE_NOTIFY_EVENT:
+			v4l2_event_queue(&vin->vdev, arg);
+			break;
+		default:
+			break;
+		}
 	}
 }
 
@@ -1153,7 +708,8 @@ int rvin_v4l2_register(struct rvin_dev *vin)
 	vdev->lock = &vin->lock;
 	vdev->fops = &rvin_fops;
 	vdev->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING |
-		V4L2_CAP_READWRITE;
+		V4L2_CAP_READWRITE | V4L2_CAP_IO_MC;
+	vdev->ioctl_ops = &rvin_mc_ioctl_ops;
 
 	/* Set a default format */
 	vin->format.pixelformat	= RVIN_DEFAULT_FORMAT;
@@ -1162,14 +718,6 @@ int rvin_v4l2_register(struct rvin_dev *vin)
 	vin->format.field = RVIN_DEFAULT_FIELD;
 	vin->format.colorspace = RVIN_DEFAULT_COLORSPACE;
 
-	if (vin->info->use_mc) {
-		vdev->device_caps |= V4L2_CAP_IO_MC;
-		vdev->ioctl_ops = &rvin_mc_ioctl_ops;
-	} else {
-		vdev->ioctl_ops = &rvin_ioctl_ops;
-		rvin_reset_format(vin);
-	}
-
 	rvin_format_align(vin, &vin->format);
 
 	ret = video_register_device(&vin->vdev, VFL_TYPE_VIDEO, -1);