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, 94 insertions, 0 deletions

diff --git a/target/linux/bcm27xx/patches-5.4/950-0669-media-uapi-v4l2-core-Add-ISP-statistics-output-V4L2-.patch b/target/linux/bcm27xx/patches-5.4/950-0669-media-uapi-v4l2-core-Add-ISP-statistics-output-V4L2-.patch
new file mode 100644
index 0000000000..082dff510c
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.4/950-0669-media-uapi-v4l2-core-Add-ISP-statistics-output-V4L2-.patch
@@ -0,0 +1,94 @@
+From 8dbbff7b75eee842c00ebaa53fa0a34b3e9bbcaa Mon Sep 17 00:00:00 2001
+From: Naushir Patuck <naush@raspberrypi.com>
+Date: Thu, 23 Apr 2020 10:20:26 +0100
+Subject: [PATCH] media: uapi: v4l2-core: Add ISP statistics output
+ V4L2 fourcc type
+
+Add V4L2_META_FMT_BCM2835_ISP_STATS V4L2 format type.
+
+This new format will be used by the BCM2835 ISP device to return
+out ISP statistics for 3A.
+
+Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
+---
+ Documentation/media/uapi/v4l/meta-formats.rst |  1 +
+ .../v4l/pixfmt-meta-bcm2835-isp-stats.rst     | 41 +++++++++++++++++++
+ drivers/media/v4l2-core/v4l2-ioctl.c          |  1 +
+ include/uapi/linux/videodev2.h                |  1 +
+ 4 files changed, 44 insertions(+)
+ create mode 100644 Documentation/media/uapi/v4l/pixfmt-meta-bcm2835-isp-stats.rst
+
+--- a/Documentation/media/uapi/v4l/meta-formats.rst
++++ b/Documentation/media/uapi/v4l/meta-formats.rst
+@@ -19,6 +19,7 @@ These formats are used for the :ref:`met
+ .. toctree::
+     :maxdepth: 1
+ 
++    pixfmt-meta-bcm2835-isp-stats
+     pixfmt-meta-d4xx
+     pixfmt-meta-intel-ipu3
+     pixfmt-meta-sensor-data
+--- /dev/null
++++ b/Documentation/media/uapi/v4l/pixfmt-meta-bcm2835-isp-stats.rst
+@@ -0,0 +1,41 @@
++.. Permission is granted to copy, distribute and/or modify this
++.. document under the terms of the GNU Free Documentation License,
++.. Version 1.1 or any later version published by the Free Software
++.. Foundation, with no Invariant Sections, no Front-Cover Texts
++.. and no Back-Cover Texts. A copy of the license is included at
++.. Documentation/media/uapi/fdl-appendix.rst.
++..
++.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections
++
++.. _v4l2-meta-fmt-bcm2835-isp-stats:
++
++*****************************************
++V4L2_META_FMT_BCM2835_ISP_STATS  ('BSTA')
++*****************************************
++
++BCM2835 ISP Statistics
++
++Description
++===========
++
++The BCM2835 ISP hardware calculate image statistics for an input Bayer frame.
++These statistics are obtained from the "bcm2835-isp0-capture3" device node
++using the :c:type:`v4l2_meta_format` interface. They are formatted as described
++by the :c:type:`bcm2835_isp_stats` structure below.
++
++.. code-block:: c
++
++	#define DEFAULT_AWB_REGIONS_X 16
++	#define DEFAULT_AWB_REGIONS_Y 12
++
++	#define NUM_HISTOGRAMS 2
++	#define NUM_HISTOGRAM_BINS 128
++	#define AWB_REGIONS (DEFAULT_AWB_REGIONS_X * DEFAULT_AWB_REGIONS_Y)
++	#define FLOATING_REGIONS 16
++	#define AGC_REGIONS 16
++	#define FOCUS_REGIONS 12
++
++.. kernel-doc:: include/uapi/linux/bcm2835-isp.h
++   :functions: bcm2835_isp_stats_hist bcm2835_isp_stats_region
++	             bcm2835_isp_stats_focus bcm2835_isp_stats
++
+--- a/drivers/media/v4l2-core/v4l2-ioctl.c
++++ b/drivers/media/v4l2-core/v4l2-ioctl.c
+@@ -1333,6 +1333,7 @@ static void v4l_fill_fmtdesc(struct v4l2
+ 	case V4L2_META_FMT_UVC:		descr = "UVC Payload Header Metadata"; break;
+ 	case V4L2_META_FMT_D4XX:	descr = "Intel D4xx UVC Metadata"; break;
+ 	case V4L2_META_FMT_SENSOR_DATA:	descr = "Sensor Ancillary Metadata"; break;
++	case V4L2_META_FMT_BCM2835_ISP_STATS: descr = "BCM2835 ISP Image Statistics"; break;
+ 
+ 	default:
+ 		/* Compressed formats */
+--- a/include/uapi/linux/videodev2.h
++++ b/include/uapi/linux/videodev2.h
+@@ -769,6 +769,7 @@ struct v4l2_pix_format {
+ #define V4L2_META_FMT_UVC         v4l2_fourcc('U', 'V', 'C', 'H') /* UVC Payload Header metadata */
+ #define V4L2_META_FMT_D4XX        v4l2_fourcc('D', '4', 'X', 'X') /* D4XX Payload Header metadata */
+ #define V4L2_META_FMT_SENSOR_DATA v4l2_fourcc('S', 'E', 'N', 'S') /* Sensor Ancillary metadata */
++#define V4L2_META_FMT_BCM2835_ISP_STATS v4l2_fourcc('B', 'S', 'T', 'A') /* BCM2835 ISP image statistics output */
+ 
+ /* priv field value to indicates that subsequent fields are valid. */
+ #define V4L2_PIX_FMT_PRIV_MAGIC		0xfeedcafe