Commit 8b4713c9 authored by Steve Longerbeam's avatar Steve Longerbeam Committed by Mauro Carvalho Chehab
Browse files

media: imx: mipi csi-2: Create media links in bound notifier 



Implement a notifier bound op to register media links from the remote
sub-device's source pad(s) to the mipi csi-2 receiver sink pad.

Signed-off-by: default avatarSteve Longerbeam <slongerbeam@gmail.com>
Signed-off-by: default avatarSakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab+huawei@kernel.org>
parent 612b385e

drivers/staging/media/imx/imx6-mipi-csi2.c

+22 −0
Original line number Diff line number Diff line
@@ -14,6 +14,7 @@ 
#include <linux/platform_device.h>

#include <media/v4l2-device.h>

#include <media/v4l2-fwnode.h>

#include <media/v4l2-mc.h>

#include <media/v4l2-subdev.h>

#include "imx-media.h"
@@ -91,6 +92,11 @@ static inline struct csi2_dev *sd_to_dev(struct v4l2_subdev *sdev) 
	return container_of(sdev, struct csi2_dev, sd);

}



static inline struct csi2_dev *notifier_to_dev(struct v4l2_async_notifier *n)

{

	return container_of(n, struct csi2_dev, notifier);

}



/*

 * The required sequence of MIPI CSI-2 startup as specified in the i.MX6

 * reference manual is as follows:
@@ -532,6 +538,20 @@ static const struct v4l2_subdev_internal_ops csi2_internal_ops = { 
	.registered = csi2_registered,

};



static int csi2_notify_bound(struct v4l2_async_notifier *notifier,

			     struct v4l2_subdev *sd,

			     struct v4l2_async_subdev *asd)

{

	struct csi2_dev *csi2 = notifier_to_dev(notifier);

	struct media_pad *sink = &csi2->sd.entity.pads[CSI2_SINK_PAD];



	return v4l2_create_fwnode_links_to_pad(sd, sink);

}



static const struct v4l2_async_notifier_operations csi2_notify_ops = {

	.bound = csi2_notify_bound,

};



static int csi2_async_register(struct csi2_dev *csi2)

{

	struct v4l2_fwnode_endpoint vep = {
@@ -570,6 +590,8 @@ static int csi2_async_register(struct csi2_dev *csi2) 


	fwnode_handle_put(ep);



	csi2->notifier.ops = &csi2_notify_ops;



	ret = v4l2_async_subdev_notifier_register(&csi2->sd,

						  &csi2->notifier);

	if (ret)