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>

1 files changed, 63 insertions, 0 deletions

diff --git a/target/linux/bcm27xx/patches-5.4/950-0795-media-v4l2-subdev-Introduce-get-set-_mbus_config-pad.patch b/target/linux/bcm27xx/patches-5.4/950-0795-media-v4l2-subdev-Introduce-get-set-_mbus_config-pad.patch
new file mode 100644
index 0000000000..910828421b
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.4/950-0795-media-v4l2-subdev-Introduce-get-set-_mbus_config-pad.patch
@@ -0,0 +1,63 @@
+From 487203abdef24b7d3cdd110f1b1e699fd22aa02c Mon Sep 17 00:00:00 2001
+From: Jacopo Mondi <jacopo+renesas@jmondi.org>
+Date: Tue, 16 Jun 2020 16:12:36 +0200
+Subject: [PATCH]_mbus_config
+ pad ops
+
+Upstream https://patchwork.linuxtv.org/patch/64669/
+
+Introduce two new pad operations to allow retrieving and configuring the
+media bus parameters on a subdevice pad.
+
+The newly introduced operations aims to replace the s/g_mbus_config video
+operations, which have been on their way for deprecation since a long
+time.
+
+Signed-off-by: Jacopo Mondi <jacopo+renesas@jmondi.org>
+---
+ include/media/v4l2-subdev.h | 27 +++++++++++++++++++++++++++
+ 1 file changed, 27 insertions(+)
+
+--- a/include/media/v4l2-subdev.h
++++ b/include/media/v4l2-subdev.h
+@@ -670,6 +670,29 @@ struct v4l2_subdev_pad_config {
+  *
+  * @set_frame_desc: set the low level media bus frame parameters, @fd array
+  *                  may be adjusted by the subdev driver to device capabilities.
++ *
++ * @get_mbus_config: get the media bus configuration of a remote sub-device.
++ *		     The media bus configuration is usually retrieved from the
++ *		     firmware interface at sub-device probe time, immediately
++ *		     applied to the hardware and eventually adjusted by the
++ *		     driver. Remote sub-devices (usually video receivers) shall
++ *		     use this operation to query the transmitting end bus
++ *		     configuration in order to adjust their own one accordingly.
++ *		     Callers should make sure they get the most up-to-date as
++ *		     possible configuration from the remote end, likely calling
++ *		     this operation as close as possible to stream on time. The
++ *		     operation shall fail if the pad index it has been called on
++ *		     is not valid.
++ *
++ * @set_mbus_config: set the media bus configuration of a remote sub-device.
++ *		     This operations is intended to allow, in combination with
++ *		     the get_mbus_config operation, the negotiation of media bus
++ *		     configuration parameters between media sub-devices. The
++ *		     operation shall not fail if the requested configuration is
++ *		     not supported, but the driver shall update the content of
++ *		     the %config argument to reflect what has been actually
++ *		     applied to the hardware. The operation shall fail if the
++ *		     pad index it has been called on is not valid.
+  */
+ struct v4l2_subdev_pad_ops {
+ 	int (*init_cfg)(struct v4l2_subdev *sd,
+@@ -710,6 +733,10 @@ struct v4l2_subdev_pad_ops {
+ 			      struct v4l2_mbus_frame_desc *fd);
+ 	int (*set_frame_desc)(struct v4l2_subdev *sd, unsigned int pad,
+ 			      struct v4l2_mbus_frame_desc *fd);
++	int (*get_mbus_config)(struct v4l2_subdev *sd, unsigned int pad,
++			       struct v4l2_mbus_config *config);
++	int (*set_mbus_config)(struct v4l2_subdev *sd, unsigned int pad,
++			       struct v4l2_mbus_config *config);
+ };
+ 
+ /**