[PATCH v4 06/11] media: uapi: Add a control for HANTRO driver
From: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Date: 2021-03-03 16:10:11
Also in:
linux-arm-kernel, linux-media, linux-rockchip, lkml
Subsystem:
media input infrastructure (v4l/dvb), the rest · Maintainers:
Mauro Carvalho Chehab, Linus Torvalds
The Hantro hevc driver needs to know the number of bits to skip at the beginning of the slice header. That is a hardware specific requirement so create a dedicated control that this purpose. Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com> --- version 4: - The control is now an integer which is enough to provide the numbers of bits to skip. version 3: - Fix typo in field name Documentation/userspace-api/media/drivers/hantro.rst | 10 ++++++++++ Documentation/userspace-api/media/drivers/index.rst | 1 + include/uapi/linux/v4l2-controls.h | 5 +++++ 3 files changed, 16 insertions(+) create mode 100644 Documentation/userspace-api/media/drivers/hantro.rst
diff --git a/Documentation/userspace-api/media/drivers/hantro.rst b/Documentation/userspace-api/media/drivers/hantro.rst
new file mode 100644
index 000000000000..655b0c5f5d5c
--- /dev/null
+++ b/Documentation/userspace-api/media/drivers/hantro.rst@@ -0,0 +1,10 @@ +.. SPDX-License-Identifier: GPL-2.0 + +Hantro video decoder driver +=========================== + +The Hantro video decoder driver implements the following driver-specific controls: + +``V4L2_CID_HANTRO_HEVC_SLICE_HEADER_SKIP (integer)`` + Specifies to Hantro HEVC video decoder driver the number of data (in bits) to + skip in the slice segment header syntax after 'slice type' token.
diff --git a/Documentation/userspace-api/media/drivers/index.rst b/Documentation/userspace-api/media/drivers/index.rst
index 1a9038f5f9fa..12e3c512d718 100644
--- a/Documentation/userspace-api/media/drivers/index.rst
+++ b/Documentation/userspace-api/media/drivers/index.rst@@ -33,6 +33,7 @@ For more details see the file COPYING in the source distribution of Linux. ccs cx2341x-uapi + hantro imx-uapi max2175 meye-uapi
diff --git a/include/uapi/linux/v4l2-controls.h b/include/uapi/linux/v4l2-controls.h
index 039c0d7add1b..ced7486c7f46 100644
--- a/include/uapi/linux/v4l2-controls.h
+++ b/include/uapi/linux/v4l2-controls.h@@ -209,6 +209,11 @@ enum v4l2_colorfx { * We reserve 128 controls for this driver. */ #define V4L2_CID_USER_CCS_BASE (V4L2_CID_USER_BASE + 0x10f0) +/* + * The base for HANTRO driver controls. + * We reserve 32 controls for this driver. + */ +#define V4L2_CID_USER_HANTRO_BASE (V4L2_CID_USER_BASE + 0x1170) /* MPEG-class control IDs */ /* The MPEG controls are applicable to all codec controls
--
2.25.1