[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-Id: <20250901-ov9282-flash-strobe-v7-1-d58d5a694afc@linux.dev>
Date: Mon, 01 Sep 2025 17:05:06 +0200
From: Richard Leitner <richard.leitner@...ux.dev>
To: Sakari Ailus <sakari.ailus@...ux.intel.com>,
Dave Stevenson <dave.stevenson@...pberrypi.com>,
Mauro Carvalho Chehab <mchehab@...nel.org>, Lee Jones <lee@...nel.org>,
Pavel Machek <pavel@...nel.org>,
Laurent Pinchart <laurent.pinchart@...asonboard.com>
Cc: linux-media@...r.kernel.org, linux-kernel@...r.kernel.org,
linux-leds@...r.kernel.org, Richard Leitner <richard.leitner@...ux.dev>,
Hans Verkuil <hverkuil@...nel.org>
Subject: [PATCH v7 01/10] media: v4l: ctrls: add a control for flash/strobe
duration
Add a control V4L2_CID_FLASH_DURATION to set the duration of a
flash/strobe pulse. This is different to the V4L2_CID_FLASH_TIMEOUT
control, as the timeout defines a limit after which the flash is
"forcefully" turned off again.
On the other hand the new V4L2_CID_FLASH_DURATION is the desired length
of the flash/strobe pulse.
Signed-off-by: Richard Leitner <richard.leitner@...ux.dev>
---
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 1ea52011247accc51d0261f56eab1cf13c0624a0..f9ed7273a9f3eafe01c31b638e1c8d9fcf5424af 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 f836512e9debbc65d62a9fe04069b056be42f7b2..a5b7c382d77118eb7966385c5b22d5a89bc2b272 100644
--- a/include/uapi/linux/v4l2-controls.h
+++ b/include/uapi/linux/v4l2-controls.h
@@ -1186,6 +1186,7 @@ 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 */
--
2.47.2
Powered by blists - more mailing lists