diff options
Diffstat (limited to 'testing/linux-amlogic/0038-media-videodev2-add-V4L2_FMT_FLAG_NO_SOURCE_CHANGE.patch')
| -rw-r--r-- | testing/linux-amlogic/0038-media-videodev2-add-V4L2_FMT_FLAG_NO_SOURCE_CHANGE.patch | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/testing/linux-amlogic/0038-media-videodev2-add-V4L2_FMT_FLAG_NO_SOURCE_CHANGE.patch b/testing/linux-amlogic/0038-media-videodev2-add-V4L2_FMT_FLAG_NO_SOURCE_CHANGE.patch new file mode 100644 index 0000000000..7229bb2ec6 --- /dev/null +++ b/testing/linux-amlogic/0038-media-videodev2-add-V4L2_FMT_FLAG_NO_SOURCE_CHANGE.patch @@ -0,0 +1,49 @@ +From 80f9e75b2fce22552fdf56ade990f3f98567e29e Mon Sep 17 00:00:00 2001 +From: Maxime Jourdan <mjourdan@baylibre.com> +Date: Thu, 4 Oct 2018 15:37:39 +0200 +Subject: [PATCH] media: videodev2: add V4L2_FMT_FLAG_NO_SOURCE_CHANGE + +When a v4l2 driver exposes V4L2_EVENT_SOURCE_CHANGE, some (usually +OUTPUT) formats may not be able to trigger this event. + +Add a enum_fmt format flag to tag those specific formats. + +Signed-off-by: Maxime Jourdan <mjourdan@baylibre.com> + +--- + Documentation/media/uapi/v4l/vidioc-enum-fmt.rst | 5 +++++ + include/uapi/linux/videodev2.h | 5 +++-- + 2 files changed, 8 insertions(+), 2 deletions(-) + +diff --git a/Documentation/media/uapi/v4l/vidioc-enum-fmt.rst b/Documentation/media/uapi/v4l/vidioc-enum-fmt.rst +index 019c513..e0040b3 100644 +--- a/Documentation/media/uapi/v4l/vidioc-enum-fmt.rst ++++ b/Documentation/media/uapi/v4l/vidioc-enum-fmt.rst +@@ -116,6 +116,11 @@ one until ``EINVAL`` is returned. + - This format is not native to the device but emulated through + software (usually libv4l2), where possible try to use a native + format instead for better performance. ++ * - ``V4L2_FMT_FLAG_NO_SOURCE_CHANGE`` ++ - 0x0004 ++ - The event ``V4L2_EVENT_SOURCE_CHANGE`` is not supported ++ for this format. ++ + + + Return Value +diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h +index 1aae2e4..f44bdef 100644 +--- a/include/uapi/linux/videodev2.h ++++ b/include/uapi/linux/videodev2.h +@@ -733,8 +733,9 @@ struct v4l2_fmtdesc { + __u32 reserved[4]; + }; + +-#define V4L2_FMT_FLAG_COMPRESSED 0x0001 +-#define V4L2_FMT_FLAG_EMULATED 0x0002 ++#define V4L2_FMT_FLAG_COMPRESSED 0x0001 ++#define V4L2_FMT_FLAG_EMULATED 0x0002 ++#define V4L2_FMT_FLAG_NO_SOURCE_CHANGE 0x0004 + + /* Frame Size and frame rate enumeration */ + /* |