bcm27xx: import latest patches from the RPi foundation

bcm2708: boot tested on RPi B+ v1.2
bcm2709: boot tested on RPi 3B v1.2 and RPi 4B v1.1 4G
bcm2710: boot tested on RPi 3B v1.2
bcm2711: boot tested on RPi 4B v1.1 4G

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
(cherry-picked from commit f07e572f64)

1 files changed, 31 insertions, 0 deletions

diff --git a/target/linux/bcm27xx/patches-5.4/950-0651-media-bcm2835-unicam-Disable-event-related-ioctls-on.patch b/target/linux/bcm27xx/patches-5.4/950-0651-media-bcm2835-unicam-Disable-event-related-ioctls-on.patch
new file mode 100644
index 0000000000..cb36ce2d96
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.4/950-0651-media-bcm2835-unicam-Disable-event-related-ioctls-on.patch
@@ -0,0 +1,31 @@
+From e8f2c38720e391ce44154f17f3602484c1827a59 Mon Sep 17 00:00:00 2001
+From: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
+Date: Tue, 24 Mar 2020 23:13:02 +0200
+Subject: [PATCH] media: bcm2835-unicam: Disable event-related ioctls
+ on metadata node
+
+The unicam driver supports both the SOURCE_CHANGE and CTRL events. Both
+events are only generated on the image video node, so the event-related
+ioctls are useless on the medatada node. Disable them.
+
+Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
+Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
+Reviewed-by: Naushir Patuck <naush@raspberrypi.com>
+---
+ drivers/media/platform/bcm2835/bcm2835-unicam.c | 5 +++++
+ 1 file changed, 5 insertions(+)
+
+--- a/drivers/media/platform/bcm2835/bcm2835-unicam.c
++++ b/drivers/media/platform/bcm2835/bcm2835-unicam.c
+@@ -2374,6 +2374,11 @@ static int register_node(struct unicam_d
+ 		return -ENOMEM;
+ 	}
+ 
++	if (node->pad_id == METADATA_PAD) {
++		v4l2_disable_ioctl(vdev, VIDIOC_DQEVENT);
++		v4l2_disable_ioctl(vdev, VIDIOC_SUBSCRIBE_EVENT);
++		v4l2_disable_ioctl(vdev, VIDIOC_UNSUBSCRIBE_EVENT);
++	}
+ 	if (node->pad_id == METADATA_PAD ||
+ 	    !v4l2_subdev_has_op(unicam->sensor, video, s_std)) {
+ 		v4l2_disable_ioctl(&node->video_dev, VIDIOC_S_STD);