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Message-Id: <20180521165946.11778-15-ezequiel@collabora.com>
Date: Mon, 21 May 2018 13:59:44 -0300
From: Ezequiel Garcia <ezequiel@...labora.com>
To: linux-media@...r.kernel.org
Cc: kernel@...labora.com, Hans Verkuil <hverkuil@...all.nl>,
Mauro Carvalho Chehab <mchehab@....samsung.com>,
Shuah Khan <shuahkh@....samsung.com>,
Pawel Osciak <pawel@...iak.com>,
Alexandre Courbot <acourbot@...omium.org>,
Sakari Ailus <sakari.ailus@....fi>,
Brian Starkey <brian.starkey@....com>,
linux-kernel@...r.kernel.org,
Gustavo Padovan <gustavo.padovan@...labora.com>,
Ezequiel Garcia <ezequiel@...labora.com>
Subject: [PATCH v10 14/16] v4l: introduce the fences capability
From: Gustavo Padovan <gustavo.padovan@...labora.com>
Drivers capable of using fences (vb2 drivers) should report the
V4L2_CAP_FENCES to userspace, so add this flag to the uapi.
v2: minor doc/english fix (Hans Verkuil)
Signed-off-by: Gustavo Padovan <gustavo.padovan@...labora.com>
---
Documentation/media/uapi/v4l/vidioc-querycap.rst | 3 +++
include/uapi/linux/videodev2.h | 1 +
2 files changed, 4 insertions(+)
diff --git a/Documentation/media/uapi/v4l/vidioc-querycap.rst b/Documentation/media/uapi/v4l/vidioc-querycap.rst
index 66fb1b3d6e6e..df3ad57f07a3 100644
--- a/Documentation/media/uapi/v4l/vidioc-querycap.rst
+++ b/Documentation/media/uapi/v4l/vidioc-querycap.rst
@@ -254,6 +254,9 @@ specification the ioctl returns an ``EINVAL`` error code.
* - ``V4L2_CAP_TOUCH``
- 0x10000000
- This is a touch device.
+ * - ``V4L2_CAP_FENCES``
+ - 0x20000000
+ - The device supports explicit synchronization.
* - ``V4L2_CAP_DEVICE_CAPS``
- 0x80000000
- The driver fills the ``device_caps`` field. This capability can
diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h
index 1f18dc68ecab..cab35fca7c7f 100644
--- a/include/uapi/linux/videodev2.h
+++ b/include/uapi/linux/videodev2.h
@@ -460,6 +460,7 @@ struct v4l2_capability {
#define V4L2_CAP_STREAMING 0x04000000 /* streaming I/O ioctls */
#define V4L2_CAP_TOUCH 0x10000000 /* Is a touch device */
+#define V4L2_CAP_FENCES 0x20000000 /* Supports explicit synchronization */
#define V4L2_CAP_DEVICE_CAPS 0x80000000 /* sets device capabilities field */
--
2.16.3
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