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@xxxxxxxxxxxxx>
---
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
