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, 0 insertions, 217 deletions

diff --git a/target/linux/bcm27xx/patches-5.4/950-0645-Documentation-media-Document-read-only-subdevice.patch b/target/linux/bcm27xx/patches-5.4/950-0645-Documentation-media-Document-read-only-subdevice.patch
deleted file mode 100644
index 1983334ae1..0000000000
--- a/target/linux/bcm27xx/patches-5.4/950-0645-Documentation-media-Document-read-only-subdevice.patch
+++ /dev/null
@@ -1,217 +0,0 @@
-From c1a630e792140b4791bad84974e31b4a1cf09b1b Mon Sep 17 00:00:00 2001
-From: Jacopo Mondi <jacopo@jmondi.org>
-Date: Tue, 7 Apr 2020 17:21:56 +0200
-Subject: [PATCH] Documentation: media: Document read-only subdevice
-
-Document a new kAPI function to register subdev device nodes in read only
-mode and for each affected ioctl report how access is restricted.
-
-Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
-Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
----
- Documentation/media/kapi/v4l2-subdev.rst      | 44 +++++++++++++++++++
- Documentation/media/uapi/v4l/dev-subdev.rst   |  5 +++
- .../media/uapi/v4l/vidioc-g-dv-timings.rst    |  6 +++
- Documentation/media/uapi/v4l/vidioc-g-std.rst |  6 +++
- .../media/uapi/v4l/vidioc-subdev-g-crop.rst   |  9 ++++
- .../media/uapi/v4l/vidioc-subdev-g-fmt.rst    |  8 ++++
- .../v4l/vidioc-subdev-g-frame-interval.rst    |  8 ++++
- .../uapi/v4l/vidioc-subdev-g-selection.rst    |  8 ++++
- 8 files changed, 94 insertions(+)
-
---- a/Documentation/media/kapi/v4l2-subdev.rst
-+++ b/Documentation/media/kapi/v4l2-subdev.rst
-@@ -332,6 +332,50 @@ Private ioctls
- 	All ioctls not in the above list are passed directly to the sub-device
- 	driver through the core::ioctl operation.
- 
-+Read-only sub-device userspace API
-+----------------------------------
-+
-+Bridge drivers that control their connected subdevices through direct calls to
-+the kernel API realized by :c:type:`v4l2_subdev_ops` structure do not usually
-+want userspace to be able to change the same parameters through the subdevice
-+device node and thus do not usually register any.
-+
-+It is sometimes useful to report to userspace the current subdevice
-+configuration through a read-only API, that does not permit applications to
-+change to the device parameters but allows interfacing to the subdevice device
-+node to inspect them.
-+
-+For instance, to implement cameras based on computational photography, userspace
-+needs to know the detailed camera sensor configuration (in terms of skipping,
-+binning, cropping and scaling) for each supported output resolution. To support
-+such use cases, bridge drivers may expose the subdevice operations to userspace
-+through a read-only API.
-+
-+To create a read-only device node for all the subdevices registered with the
-+``V4L2_SUBDEV_FL_HAS_DEVNODE`` set, the :c:type:`v4l2_device` driver should call
-+:c:func:`v4l2_device_register_ro_subdev_nodes`.
-+
-+Access to the following ioctls for userspace applications is restricted on
-+sub-device device nodes registered with
-+:c:func:`v4l2_device_register_ro_subdev_nodes`.
-+
-+``VIDIOC_SUBDEV_S_FMT``,
-+``VIDIOC_SUBDEV_S_CROP``,
-+``VIDIOC_SUBDEV_S_SELECTION``:
-+
-+	These ioctls are only allowed on a read-only subdevice device node
-+	for the :ref:`V4L2_SUBDEV_FORMAT_TRY <v4l2-subdev-format-whence>`
-+	formats and selection rectangles.
-+
-+``VIDIOC_SUBDEV_S_FRAME_INTERVAL``,
-+``VIDIOC_SUBDEV_S_DV_TIMINGS``,
-+``VIDIOC_SUBDEV_S_STD``:
-+
-+	These ioctls are not allowed on a read-only subdevice node.
-+
-+In case the ioctl is not allowed, or the format to modify is set to
-+``V4L2_SUBDEV_FORMAT_ACTIVE``, the core returns a negative error code and
-+the errno variable is set to ``-EPERM``.
- 
- I2C sub-device drivers
- ----------------------
---- a/Documentation/media/uapi/v4l/dev-subdev.rst
-+++ b/Documentation/media/uapi/v4l/dev-subdev.rst
-@@ -39,6 +39,11 @@ will feature a character device node on
- Sub-device character device nodes, conventionally named
- ``/dev/v4l-subdev*``, use major number 81.
- 
-+Drivers may opt to limit the sub-device character devices to only expose
-+operations that do not modify the device state. In such a case the sub-devices
-+are referred to as ``read-only`` in the rest of this documentation, and the
-+related restrictions are documented in individual ioctls.
-+
- 
- Controls
- ========
---- a/Documentation/media/uapi/v4l/vidioc-g-dv-timings.rst
-+++ b/Documentation/media/uapi/v4l/vidioc-g-dv-timings.rst
-@@ -57,6 +57,10 @@ pointer to the struct :c:type:`v4l2_dv_t
- structure as argument. If the ioctl is not supported or the timing
- values are not correct, the driver returns ``EINVAL`` error code.
- 
-+Calling ``VIDIOC_SUBDEV_S_DV_TIMINGS`` on a subdev device node that has been
-+registered in read-only mode is not allowed. An error is returned and the errno
-+variable is set to ``-EPERM``.
-+
- The ``linux/v4l2-dv-timings.h`` header can be used to get the timings of
- the formats in the :ref:`cea861` and :ref:`vesadmt` standards. If
- the current input or output does not support DV timings (e.g. if
-@@ -81,6 +85,8 @@ ENODATA
- EBUSY
-     The device is busy and therefore can not change the timings.
- 
-+EPERM
-+    ``VIDIOC_SUBDEV_S_DV_TIMINGS`` has been called on a read-only subdevice.
- 
- .. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.7cm}|
- 
---- a/Documentation/media/uapi/v4l/vidioc-g-std.rst
-+++ b/Documentation/media/uapi/v4l/vidioc-g-std.rst
-@@ -66,6 +66,9 @@ video timings (e.g. if :ref:`VIDIOC_ENUM
- does not set the ``V4L2_IN_CAP_STD`` flag), then ``ENODATA`` error code is
- returned.
- 
-+Calling ``VIDIOC_SUBDEV_S_STD`` on a subdev device node that has been registered
-+in read-only mode is not allowed. An error is returned and the errno variable is
-+set to ``-EPERM``.
- 
- Return Value
- ============
-@@ -79,3 +82,6 @@ EINVAL
- 
- ENODATA
-     Standard video timings are not supported for this input or output.
-+
-+EPERM
-+    ``VIDIOC_SUBDEV_S_STD`` has been called on a read-only subdevice.
---- a/Documentation/media/uapi/v4l/vidioc-subdev-g-crop.rst
-+++ b/Documentation/media/uapi/v4l/vidioc-subdev-g-crop.rst
-@@ -73,6 +73,11 @@ crop rectangles and stored in the sub-de
- applications querying the same sub-device would thus not interact with
- each other.
- 
-+If the subdev device node has been registered in read-only mode, calls to
-+``VIDIOC_SUBDEV_S_CROP`` are only valid if the ``which`` field is set to
-+``V4L2_SUBDEV_FORMAT_TRY``, otherwise an error is returned and the errno
-+variable is set to ``-EPERM``.
-+
- Drivers must not return an error solely because the requested crop
- rectangle doesn't match the device capabilities. They must instead
- modify the rectangle to match what the hardware can provide. The
-@@ -123,3 +128,7 @@ EINVAL
-     references a non-existing pad, the ``which`` field references a
-     non-existing format, or cropping is not supported on the given
-     subdev pad.
-+
-+EPERM
-+    The ``VIDIOC_SUBDEV_S_CROP`` ioctl has been called on a read-only subdevice
-+    and the ``which`` field is set to ``V4L2_SUBDEV_FORMAT_ACTIVE``.
---- a/Documentation/media/uapi/v4l/vidioc-subdev-g-fmt.rst
-+++ b/Documentation/media/uapi/v4l/vidioc-subdev-g-fmt.rst
-@@ -78,6 +78,11 @@ current links configuration or sub-devic
- a low-pass noise filter might crop pixels at the frame boundaries,
- modifying its output frame size.
- 
-+If the subdev device node has been registered in read-only mode, calls to
-+``VIDIOC_SUBDEV_S_FMT`` are only valid if the ``which`` field is set to
-+``V4L2_SUBDEV_FORMAT_TRY``, otherwise an error is returned and the errno
-+variable is set to ``-EPERM``.
-+
- Drivers must not return an error solely because the requested format
- doesn't match the device capabilities. They must instead modify the
- format to match what the hardware can provide. The modified format
-@@ -146,6 +151,9 @@ EINVAL
-     ``pad`` references a non-existing pad, or the ``which`` field
-     references a non-existing format.
- 
-+EPERM
-+    The ``VIDIOC_SUBDEV_S_FMT`` ioctl has been called on a read-only subdevice
-+    and the ``which`` field is set to ``V4L2_SUBDEV_FORMAT_ACTIVE``.
- 
- ============
- 
---- a/Documentation/media/uapi/v4l/vidioc-subdev-g-frame-interval.rst
-+++ b/Documentation/media/uapi/v4l/vidioc-subdev-g-frame-interval.rst
-@@ -65,6 +65,10 @@ struct
- contains the current frame interval as would be returned by a
- ``VIDIOC_SUBDEV_G_FRAME_INTERVAL`` call.
- 
-+Calling ``VIDIOC_SUBDEV_S_FRAME_INTERVAL`` on a subdev device node that has been
-+registered in read-only mode is not allowed. An error is returned and the errno
-+variable is set to ``-EPERM``.
-+
- Drivers must not return an error solely because the requested interval
- doesn't match the device capabilities. They must instead modify the
- interval to match what the hardware can provide. The modified interval
-@@ -118,3 +122,7 @@ EINVAL
-     :c:type:`v4l2_subdev_frame_interval`
-     ``pad`` references a non-existing pad, or the pad doesn't support
-     frame intervals.
-+
-+EPERM
-+    The ``VIDIOC_SUBDEV_S_FRAME_INTERVAL`` ioctl has been called on a read-only
-+    subdevice.
---- a/Documentation/media/uapi/v4l/vidioc-subdev-g-selection.rst
-+++ b/Documentation/media/uapi/v4l/vidioc-subdev-g-selection.rst
-@@ -53,6 +53,10 @@ function of the crop API, and more, are
- See :ref:`subdev` for more information on how each selection target
- affects the image processing pipeline inside the subdevice.
- 
-+If the subdev device node has been registered in read-only mode, calls to
-+``VIDIOC_SUBDEV_S_SELECTION`` are only valid if the ``which`` field is set to
-+``V4L2_SUBDEV_FORMAT_TRY``, otherwise an error is returned and the errno
-+variable is set to ``-EPERM``.
- 
- Types of selection targets
- --------------------------
-@@ -123,3 +127,7 @@ EINVAL
-     ``pad`` references a non-existing pad, the ``which`` field
-     references a non-existing format, or the selection target is not
-     supported on the given subdev pad.
-+
-+EPERM
-+    The ``VIDIOC_SUBDEV_S_SELECTION`` ioctl has been called on a read-only
-+    subdevice and the ``which`` field is set to ``V4L2_SUBDEV_FORMAT_ACTIVE``.