From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 1FB1B223DCF; Tue, 4 Nov 2025 14:31:09 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1762266670; cv=none; b=AuxYvcVhPh6b+BT1buWoYsxI5Ry4NSPbvuRualHR6/DAtb7E142rcaBs1LCwaoGkUC6q9b6PnGPvhxPwpX8C8CGsqa03sPKs4/av0uR1hkpn4ablr6dMaDDH5SDwuxbbx3ruXkBcI8ssVA/Ocilrz5TuMj3SHXenGJ1dCYi6sGA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1762266670; c=relaxed/simple; bh=UANwLOgcj9WwONW3K+0Sy55FYPHJ20LKps0TM9A7gAM=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=Lo5jc8QvOwIRXTlzRlJnap9GX11dmns2zOxmyAsL74MXN4OsnWIvoCCUWbdtUtZURi6e6yzn6POnpo8invpr7BMQC2+/hETwI0G4FY4r9DMPGhAGYhA5ssyqCMWb/5vzcgR7xczqk0dwgznw4NrQu+NVtHgoEJXffUYQaMM4+kQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b=Xdxaex0Y; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b="Xdxaex0Y" Received: by smtp.kernel.org (Postfix) with ESMTPS id B4C5CC4CEF7; Tue, 4 Nov 2025 14:31:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux.dev; s=korg; t=1762266669; bh=UANwLOgcj9WwONW3K+0Sy55FYPHJ20LKps0TM9A7gAM=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=Xdxaex0Y+uyeCbHG2DJpeH8p6/R29LRJeM0/5ur/G+2RcAgh7ZrQwE3jNaUKdN2Mq hsthooNdaUwfFSCgqmdA9tcQHZDK6tZ8erMDE7ht4TimvC0bgfywCvfOIv4XRk+HRN S9Un+vneKHnXCzQA73MDmrxVhJw8a17aVsiaRuoo= Received: from aws-us-west-2-korg-lkml-1.web.codeaurora.org (localhost.localdomain [127.0.0.1]) by smtp.lore.kernel.org (Postfix) with ESMTP id A43B3CCF9E3; Tue, 4 Nov 2025 14:31:09 +0000 (UTC) From: Richard Leitner Date: Tue, 04 Nov 2025 15:30:52 +0100 Subject: [PATCH v8 1/8] media: v4l: ctrls: add a control for flash/strobe duration Precedence: bulk X-Mailing-List: linux-leds@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20251104-ov9282-flash-strobe-v8-1-b91dfef1c65a@linux.dev> References: <20251104-ov9282-flash-strobe-v8-0-b91dfef1c65a@linux.dev> In-Reply-To: <20251104-ov9282-flash-strobe-v8-0-b91dfef1c65a@linux.dev> To: Sakari Ailus , Dave Stevenson , Mauro Carvalho Chehab , Lee Jones , Pavel Machek , Laurent Pinchart Cc: linux-media@vger.kernel.org, linux-kernel@vger.kernel.org, linux-leds@vger.kernel.org, Richard Leitner , Hans Verkuil X-Mailer: b4 0.15-dev-509f5 X-Developer-Signature: v=1; a=ed25519-sha256; t=1762266668; l=1820; i=richard.leitner@linux.dev; s=20250225; h=from:subject:message-id; bh=UANwLOgcj9WwONW3K+0Sy55FYPHJ20LKps0TM9A7gAM=; b=RdU6KiIoLWrm9x31+vdY74YcAAIGkKWQ7InHoJrFG+E/ThxZYIojLc+6qdz16VJ4X2SjxcIaI IVO4oDL872GB9SnkzD1h4mFYzecp4mbHW6ae2MGZvWq7i9cYvfHepA1 X-Developer-Key: i=richard.leitner@linux.dev; a=ed25519; pk=8hZNyyyQFqZ5ruVJsSGBSPIrmJpfDm5HwHU4QVOP1Pk= X-Endpoint-Received: by B4 Relay for richard.leitner@linux.dev/20250225 with auth_id=350 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 --- 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 2d30107e047ee..9830833b48a52 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 */ -- 2.47.3