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[89.3.157.123]) by smtp.gmail.com with ESMTPSA id g10-v6sm3165483wrv.49.2018.10.04.06.38.12 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 04 Oct 2018 06:38:13 -0700 (PDT) From: Maxime Jourdan To: Mauro Carvalho Chehab Cc: Maxime Jourdan , Tomasz Figa , Hans Verkuil , linux-media@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH] media: videodev2: add V4L2_FMT_FLAG_NO_SOURCE_CHANGE Date: Thu, 4 Oct 2018 15:37:39 +0200 Message-Id: <20181004133739.19086-1-mjourdan@baylibre.com> X-Mailer: git-send-email 2.19.0 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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 --- 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 019c513df217..e0040b36ac43 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 3a65951ca51e..a28acee1cb52 100644 --- a/include/uapi/linux/videodev2.h +++ b/include/uapi/linux/videodev2.h @@ -723,8 +723,9 @@ 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 */ /* -- 2.19.0