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, 169 insertions, 0 deletions

diff --git a/target/linux/bcm27xx/patches-5.4/950-0670-media-uapi-v4l-ctrls-Add-CID-base-for-the-bcm2835-is.patch b/target/linux/bcm27xx/patches-5.4/950-0670-media-uapi-v4l-ctrls-Add-CID-base-for-the-bcm2835-is.patch
new file mode 100644
index 0000000000..96e6e124af
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.4/950-0670-media-uapi-v4l-ctrls-Add-CID-base-for-the-bcm2835-is.patch
@@ -0,0 +1,169 @@
+From 23afbeb993acfd94fa21341f01819ab6505444d2 Mon Sep 17 00:00:00 2001
+From: Naushir Patuck <naush@raspberrypi.com>
+Date: Tue, 21 Apr 2020 15:06:19 +0100
+Subject: [PATCH] media: uapi: v4l-ctrls: Add CID base for the
+ bcm2835-isp driver
+
+We are reserving controls for the new bcm2835-isp driver.
+
+Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
+---
+ .../media/v4l-drivers/bcm2835-isp.rst         | 127 ++++++++++++++++++
+ Documentation/media/v4l-drivers/index.rst     |   1 +
+ include/uapi/linux/v4l2-controls.h            |   4 +
+ 3 files changed, 132 insertions(+)
+ create mode 100644 Documentation/media/v4l-drivers/bcm2835-isp.rst
+
+--- /dev/null
++++ b/Documentation/media/v4l-drivers/bcm2835-isp.rst
+@@ -0,0 +1,127 @@
++.. SPDX-License-Identifier: GPL-2.0
++
++BCM2835 ISP Driver
++==================
++
++Introduction
++------------
++
++The BCM2835 Image Sensor Pipeline (ISP) is a fixed function hardware pipeline
++for performing image processing operations.  Images are fed to the input
++of the ISP through memory frame buffers.  These images may be in various YUV,
++RGB, or Bayer formats.  A typical use case would have Bayer images obtained from
++an image sensor by the BCM2835 Unicam peripheral, written to a memory
++frame buffer, and finally fed into the input of the ISP.  Two concurrent output
++images may be generated in YUV or RGB format at different resolutions.
++Statistics output is also generated for Bayer input images.
++
++The bcm2835-isp driver exposes the following media pads as V4L2 device nodes:
++
++.. tabularcolumns:: |l|l|l|l|
++
++.. cssclass: longtable
++
++.. flat-table::
++
++    * - *Pad*
++      - *Direction*
++      - *Purpose*
++      - *Formats*
++
++    * - "bcm2835-isp0-output0"
++      - sink
++      - Accepts Bayer, RGB or YUV format frame buffers as input to the ISP HW
++        pipeline.
++      - :ref:`RAW8 <V4L2-PIX-FMT-SRGGB8>`,
++        :ref:`RAW10P <V4L2-PIX-FMT-SRGGB10P>`,
++        :ref:`RAW12P <V4L2-PIX-FMT-SRGGB12P>`,
++        :ref:`RAW14P <V4L2-PIX-FMT-SRGGB14P>`,
++        :ref:`RAW16 <V4L2-PIX-FMT-SRGGB16>`,
++        :ref:`RGB24/BGR24 <V4L2-PIX-FMT-RGB24>`,
++        :ref:`YUYV <V4L2-PIX-FMT-YUYV>`,
++        :ref:`YVYU <V4L2-PIX-FMT-YVYU>`,
++        :ref:`UYVY <V4L2-PIX-FMT-UYVY>`,
++        :ref:`VYUY <V4L2-PIX-FMT-VYUY>`,
++        :ref:`YUV420/YVU420 <V4L2-PIX-FMT-YUV420>`
++
++    * - "bcm2835-isp0-capture1"
++      - source
++      - High resolution YUV or RGB processed output from the ISP.
++      - :ref:`RGB565 <V4L2-PIX-FMT-RGB565>`,
++        :ref:`RGB24/BGR24 <V4L2-PIX-FMT-RGB24>`,
++        :ref:`ABGR32 <V4L2-PIX-FMT-ABGR32>`,
++        :ref:`YUYV <V4L2-PIX-FMT-YUYV>`,
++        :ref:`YVYU <V4L2-PIX-FMT-YVYU>`,
++        :ref:`UYVY <V4L2-PIX-FMT-UYVY>`,
++        :ref:`VYUY <V4L2-PIX-FMT-VYUY>`.
++        :ref:`YUV420/YVU420 <V4L2-PIX-FMT-YUV420>`,
++        :ref:`NV12/NV21 <V4L2-PIX-FMT-NV12>`,
++
++    * - "bcm2835-isp0-capture2"
++      - source
++      - Low resolution YUV processed output from the ISP. The output of
++        this pad cannot have a resolution larger than the "bcm2835-isp0-capture1" pad in any dimension.
++      - :ref:`YUYV <V4L2-PIX-FMT-YUYV>`,
++        :ref:`YVYU <V4L2-PIX-FMT-YVYU>`,
++        :ref:`UYVY <V4L2-PIX-FMT-UYVY>`,
++        :ref:`VYUY <V4L2-PIX-FMT-VYUY>`.
++        :ref:`YUV420/YVU420 <V4L2-PIX-FMT-YUV420>`,
++        :ref:`NV12/NV21 <V4L2-PIX-FMT-NV12>`,
++
++    * - "bcm2835-isp0-capture1"
++      - source
++      - Image statistics calculated from the input image provided on the
++        "bcm2835-isp0-output0" pad.  Statistics are only available for Bayer
++        format input images.
++      - :ref:`v4l2-meta-fmt-bcm2835-isp-stats`.
++
++Pipeline Configuration
++----------------------
++
++The ISP pipeline can be configure through user-space by calling
++:ref:`VIDIOC_S_EXT_CTRLS <VIDIOC_G_EXT_CTRLS>` on the “bcm2835-isp0-output0”
++node with the appropriate parameters as shown in the table below.
++
++.. tabularcolumns:: |p{2cm}|p{5.0cm}|
++
++.. cssclass: longtable
++
++.. flat-table::
++
++    * - *id*
++      - *Parameter*
++
++    * - ``V4L2_CID_USER_BCM2835_ISP_CC_MATRIX``
++      - struct :c:type:`bcm2835_isp_custom_ccm`
++
++    * - ``V4L2_CID_USER_BCM2835_ISP_LENS_SHADING``
++      - struct :c:type:`bcm2835_isp_lens_shading`
++
++    * - ``V4L2_CID_USER_BCM2835_ISP_BLACK_LEVEL``
++      - struct :c:type:`bcm2835_isp_black_level`
++
++    * - ``V4L2_CID_USER_BCM2835_ISP_GEQ``
++      - struct :c:type:`bcm2835_isp_geq`
++
++    * - ``V4L2_CID_USER_BCM2835_ISP_GAMMA``
++      - struct :c:type:`bcm2835_isp_gamma`
++
++    * - ``V4L2_CID_USER_BCM2835_ISP_DENOISE``
++      - struct :c:type:`bcm2835_isp_denoise`
++
++    * - ``V4L2_CID_USER_BCM2835_ISP_SHARPEN``
++      - struct :c:type:`bcm2835_isp_sharpen`
++
++    * - ``V4L2_CID_USER_BCM2835_ISP_DPC``
++      - struct :c:type:`bcm2835_isp_dpc`
++
++++++++++++++++++++++++++
++Configuration Parameters
++++++++++++++++++++++++++
++
++.. kernel-doc:: include/uapi/linux/bcm2835-isp.h
++   :functions: bcm2835_isp_rational bcm2835_isp_ccm bcm2835_isp_custom_ccm
++                bcm2835_isp_gain_format bcm2835_isp_lens_shading
++                bcm2835_isp_black_level bcm2835_isp_geq bcm2835_isp_gamma
++                bcm2835_isp_denoise bcm2835_isp_sharpen
++                bcm2835_isp_dpc_mode bcm2835_isp_dpc
+--- a/Documentation/media/v4l-drivers/index.rst
++++ b/Documentation/media/v4l-drivers/index.rst
+@@ -35,6 +35,7 @@ For more details see the file COPYING in
+ 	v4l-with-ir
+ 	tuners
+ 	cardlist
++	bcm2835-isp
+ 	bttv
+ 	cafe_ccic
+ 	cpia2
+--- a/include/uapi/linux/v4l2-controls.h
++++ b/include/uapi/linux/v4l2-controls.h
+@@ -192,6 +192,10 @@ enum v4l2_colorfx {
+  * We reserve 16 controls for this driver. */
+ #define V4L2_CID_USER_IMX_BASE			(V4L2_CID_USER_BASE + 0x10b0)
+ 
++/* The base for the bcm2835-isp driver controls.
++ * We reserve 16 controls for this driver. */
++#define V4L2_CID_USER_BCM2835_ISP_BASE		(V4L2_CID_USER_BASE + 0x10c0)
++
+ /* MPEG-class control IDs */
+ /* The MPEG controls are applicable to all codec controls
+  * and the 'MPEG' part of the define is historical */