From d89ccbf3dde727d91a242a5a3f3b70a90579b057 Mon Sep 17 00:00:00 2001 From: Richard Leitner Date: Tue, 9 Dec 2025 23:44:36 +0100 Subject: [PATCH] media: v4l: ctrls: add a control for flash/strobe duration Add a V4L2_CID_FLASH_DURATION control to set the duration of a flash/strobe pulse. This controls the length of the flash/strobe pulse output by device (typically a camera sensor) and connected to the flash controller. This is different to the V4L2_CID_FLASH_TIMEOUT control, which is implemented by the flash controller and defines a limit after which the flash is "forcefully" turned off again. Reviewed-by: Laurent Pinchart Signed-off-by: Richard Leitner Signed-off-by: Sakari Ailus Signed-off-by: Hans Verkuil --- drivers/media/v4l2-core/v4l2-ctrls-defs.c | 1 + include/uapi/linux/v4l2-controls.h | 1 + 2 files changed, 2 insertions(+) diff --git a/drivers/media/v4l2-core/v4l2-ctrls-defs.c b/drivers/media/v4l2-core/v4l2-ctrls-defs.c index ad41f65374e23..4848423205ff7 100644 --- a/drivers/media/v4l2-core/v4l2-ctrls-defs.c +++ b/drivers/media/v4l2-core/v4l2-ctrls-defs.c @@ -1135,6 +1135,7 @@ const char *v4l2_ctrl_get_name(u32 id) case V4L2_CID_FLASH_FAULT: return "Faults"; case V4L2_CID_FLASH_CHARGE: return "Charge"; case V4L2_CID_FLASH_READY: return "Ready to Strobe"; + case V4L2_CID_FLASH_DURATION: return "Strobe Duration"; /* JPEG encoder controls */ /* Keep the order of the 'case's the same as in v4l2-controls.h! */ diff --git a/include/uapi/linux/v4l2-controls.h b/include/uapi/linux/v4l2-controls.h index f84ed133a6c9b..357845830fe96 100644 --- a/include/uapi/linux/v4l2-controls.h +++ b/include/uapi/linux/v4l2-controls.h @@ -1192,6 +1192,7 @@ enum v4l2_flash_strobe_source { #define V4L2_CID_FLASH_CHARGE (V4L2_CID_FLASH_CLASS_BASE + 11) #define V4L2_CID_FLASH_READY (V4L2_CID_FLASH_CLASS_BASE + 12) +#define V4L2_CID_FLASH_DURATION (V4L2_CID_FLASH_CLASS_BASE + 13) /* JPEG-class control IDs */ -- 2.47.3