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Diffstat (limited to 'target/linux/brcm2708/patches-4.19/950-0697-media-videodev2.h-add-new-capabilities-for-buffer-ty.patch')
| -rw-r--r-- | target/linux/brcm2708/patches-4.19/950-0697-media-videodev2.h-add-new-capabilities-for-buffer-ty.patch | 136 |
1 files changed, 0 insertions, 136 deletions
diff --git a/target/linux/brcm2708/patches-4.19/950-0697-media-videodev2.h-add-new-capabilities-for-buffer-ty.patch b/target/linux/brcm2708/patches-4.19/950-0697-media-videodev2.h-add-new-capabilities-for-buffer-ty.patch deleted file mode 100644 index e313ace895..0000000000 --- a/target/linux/brcm2708/patches-4.19/950-0697-media-videodev2.h-add-new-capabilities-for-buffer-ty.patch +++ /dev/null @@ -1,136 +0,0 @@ -From e9ec6de11c358ff3bc389cfa0003544c60f859ef Mon Sep 17 00:00:00 2001 -From: Hans Verkuil <hansverk@cisco.com> -Date: Thu, 23 Aug 2018 09:56:22 -0400 -Subject: [PATCH 697/703] media: videodev2.h: add new capabilities for buffer - types - -Upstream commit f35f5d72e70e6b91389eb98fcabf43b79f40587f - -VIDIOC_REQBUFS and VIDIOC_CREATE_BUFFERS will return capabilities -telling userspace what the given buffer type is capable of. - -Signed-off-by: Hans Verkuil <hansverk@cisco.com> -Reviewed-by: Tomasz Figa <tfiga@chromium.org> -Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com> -Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> ---- - .../media/uapi/v4l/vidioc-create-bufs.rst | 14 ++++++- - .../media/uapi/v4l/vidioc-reqbufs.rst | 42 ++++++++++++++++++- - include/uapi/linux/videodev2.h | 13 +++++- - 3 files changed, 65 insertions(+), 4 deletions(-) - ---- a/Documentation/media/uapi/v4l/vidioc-create-bufs.rst -+++ b/Documentation/media/uapi/v4l/vidioc-create-bufs.rst -@@ -102,7 +102,19 @@ than the number requested. - - ``format`` - - Filled in by the application, preserved by the driver. - * - __u32 -- - ``reserved``\ [8] -+ - ``capabilities`` -+ - Set by the driver. If 0, then the driver doesn't support -+ capabilities. In that case all you know is that the driver is -+ guaranteed to support ``V4L2_MEMORY_MMAP`` and *might* support -+ other :c:type:`v4l2_memory` types. It will not support any others -+ capabilities. See :ref:`here <v4l2-buf-capabilities>` for a list of the -+ capabilities. -+ -+ If you want to just query the capabilities without making any -+ other changes, then set ``count`` to 0, ``memory`` to -+ ``V4L2_MEMORY_MMAP`` and ``format.type`` to the buffer type. -+ * - __u32 -+ - ``reserved``\ [7] - - A place holder for future extensions. Drivers and applications - must set the array to zero. - ---- a/Documentation/media/uapi/v4l/vidioc-reqbufs.rst -+++ b/Documentation/media/uapi/v4l/vidioc-reqbufs.rst -@@ -88,10 +88,50 @@ any DMA in progress, an implicit - ``V4L2_MEMORY_DMABUF`` or ``V4L2_MEMORY_USERPTR``. See - :c:type:`v4l2_memory`. - * - __u32 -- - ``reserved``\ [2] -+ - ``capabilities`` -+ - Set by the driver. If 0, then the driver doesn't support -+ capabilities. In that case all you know is that the driver is -+ guaranteed to support ``V4L2_MEMORY_MMAP`` and *might* support -+ other :c:type:`v4l2_memory` types. It will not support any others -+ capabilities. -+ -+ If you want to query the capabilities with a minimum of side-effects, -+ then this can be called with ``count`` set to 0, ``memory`` set to -+ ``V4L2_MEMORY_MMAP`` and ``type`` set to the buffer type. This will -+ free any previously allocated buffers, so this is typically something -+ that will be done at the start of the application. -+ * - __u32 -+ - ``reserved``\ [1] - - A place holder for future extensions. Drivers and applications - must set the array to zero. - -+.. tabularcolumns:: |p{6.1cm}|p{2.2cm}|p{8.7cm}| -+ -+.. _v4l2-buf-capabilities: -+.. _V4L2-BUF-CAP-SUPPORTS-MMAP: -+.. _V4L2-BUF-CAP-SUPPORTS-USERPTR: -+.. _V4L2-BUF-CAP-SUPPORTS-DMABUF: -+.. _V4L2-BUF-CAP-SUPPORTS-REQUESTS: -+ -+.. cssclass:: longtable -+ -+.. flat-table:: V4L2 Buffer Capabilities Flags -+ :header-rows: 0 -+ :stub-columns: 0 -+ :widths: 3 1 4 -+ -+ * - ``V4L2_BUF_CAP_SUPPORTS_MMAP`` -+ - 0x00000001 -+ - This buffer type supports the ``V4L2_MEMORY_MMAP`` streaming mode. -+ * - ``V4L2_BUF_CAP_SUPPORTS_USERPTR`` -+ - 0x00000002 -+ - This buffer type supports the ``V4L2_MEMORY_USERPTR`` streaming mode. -+ * - ``V4L2_BUF_CAP_SUPPORTS_DMABUF`` -+ - 0x00000004 -+ - This buffer type supports the ``V4L2_MEMORY_DMABUF`` streaming mode. -+ * - ``V4L2_BUF_CAP_SUPPORTS_REQUESTS`` -+ - 0x00000008 -+ - This buffer type supports :ref:`requests <media-request-api>`. - - Return Value - ============ ---- a/include/uapi/linux/videodev2.h -+++ b/include/uapi/linux/videodev2.h -@@ -872,9 +872,16 @@ struct v4l2_requestbuffers { - __u32 count; - __u32 type; /* enum v4l2_buf_type */ - __u32 memory; /* enum v4l2_memory */ -- __u32 reserved[2]; -+ __u32 capabilities; -+ __u32 reserved[1]; - }; - -+/* capabilities for struct v4l2_requestbuffers and v4l2_create_buffers */ -+#define V4L2_BUF_CAP_SUPPORTS_MMAP (1 << 0) -+#define V4L2_BUF_CAP_SUPPORTS_USERPTR (1 << 1) -+#define V4L2_BUF_CAP_SUPPORTS_DMABUF (1 << 2) -+#define V4L2_BUF_CAP_SUPPORTS_REQUESTS (1 << 3) -+ - /** - * struct v4l2_plane - plane info for multi-planar buffers - * @bytesused: number of bytes occupied by data in the plane (payload) -@@ -2318,6 +2325,7 @@ struct v4l2_dbg_chip_info { - * return: number of created buffers - * @memory: enum v4l2_memory; buffer memory type - * @format: frame format, for which buffers are requested -+ * @capabilities: capabilities of this buffer type. - * @reserved: future extensions - */ - struct v4l2_create_buffers { -@@ -2325,7 +2333,8 @@ struct v4l2_create_buffers { - __u32 count; - __u32 memory; - struct v4l2_format format; -- __u32 reserved[8]; -+ __u32 capabilities; -+ __u32 reserved[7]; - }; - - /* |