@@ -20,4 +20,11 @@ match the expected size inherited from the destination image resolution.
More details on the DW100 hardware operations can be found in
*chapter 13.15 DeWarp* of IMX8MP_ reference manuel.
+The Vivante DW100 m2m driver implements the following driver-specific control:
+
+``V4L2_CID_DW100_MAPPING (integer)``
+ Specifies to DW100 driver its dewarping map (aka LUT) blob as described in
+ *chapter 13.15.2.3 Dewarping Remap* of IMX8MP_ reference manual as an U32
+ dynamic array.
+
.. _IMX8MP: https://www.nxp.com/webapp/Download?colCode=IMX8MPRM
new file mode 100644
@@ -0,0 +1,11 @@
+/* SPDX-License-Identifier: GPL-2.0-only WITH Linux-syscall-note */
+/* Copyright 2022 NXP */
+
+#ifndef __UAPI_DW100_H__
+#define __UAPI_DW100_H__
+
+#include <linux/v4l2-controls.h>
+
+#define V4L2_CID_DW100_MAPPING (V4L2_CID_USER_DW100_BASE + 1)
+
+#endif
The DW100 driver gets the dewarping mapping as a binary blob from the userspace application through a custom control. The blob format is hardware specific so create a dedicated control for this purpose. Signed-off-by: Xavier Roumegue <xavier.roumegue@oss.nxp.com> --- Documentation/userspace-api/media/drivers/dw100.rst | 7 +++++++ include/uapi/linux/dw100.h | 11 +++++++++++ 2 files changed, 18 insertions(+) create mode 100644 include/uapi/linux/dw100.h