From nobody Sun Feb 8 17:37:08 2026 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 E1F8726AEE; Tue, 29 Apr 2025 12:59:16 +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=1745931557; cv=none; b=s16YntpYuW7SYtnOaF17UA5p3kf+I/Mh6g2USzCJgz4LTNP2/3zFuB2MlHdoriqoNT18a1xEfUW/dKZfLLoluiXptQoxG6ZA2j+u4n16wlXtAZ8jMFEG3WJ7LLziPjolRSHbQfTf+8tsNk1vzZDj8+SSu/66g4hlf5mf2Oas52c= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1745931557; c=relaxed/simple; bh=0nzpfTzsTCcWDqac7ZTk2BZgJrXNm8rZpSw6OMimBsU=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=HtoS0UXYZh29waIr9HIwaFGRYEtffTT9DX5KwK2b7LC+hvTrEl2RDLxXySwRjL09wJd4RFiDTPaomRQY3EzFvWLLrW8SSka1xpX4HtccjOej/MFCTC7d+k6Dkx94QMUUJukDAz4Gt+GU+OP/Casew0VrBmzWAZlRnbWvS76jKYw= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b=ay8TNfIJ; 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="ay8TNfIJ" Received: by smtp.kernel.org (Postfix) with ESMTPS id 55840C4AF0C; Tue, 29 Apr 2025 12:59:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux.dev; s=korg; t=1745931556; bh=0nzpfTzsTCcWDqac7ZTk2BZgJrXNm8rZpSw6OMimBsU=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=ay8TNfIJdHSpE+Ghmbsd+kSSO8m9juy6QZAkTgyzDv10MPyJ5iQ7TSDz8GNkIt5N0 MkJNf39g4/wXj9Ast1YYWXtr0Qdi+fY7YdepA3vKr2uoVxCt+7FDu/2qYy5g4Cdep0 HY8sIjyjhJVUIkfdzrmDerDpGZtvySSxdUoCB+2s= 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 3871AC3ABAC; Tue, 29 Apr 2025 12:59:16 +0000 (UTC) From: Richard Leitner Date: Tue, 29 Apr 2025 14:59:06 +0200 Subject: [PATCH v3 1/9] media: v4l: ctrls: add a control for flash/strobe duration Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20250429-ov9282-flash-strobe-v3-1-2105ce179952@linux.dev> References: <20250429-ov9282-flash-strobe-v3-0-2105ce179952@linux.dev> In-Reply-To: <20250429-ov9282-flash-strobe-v3-0-2105ce179952@linux.dev> To: Sakari Ailus , Dave Stevenson , Mauro Carvalho Chehab , Lee Jones , Pavel Machek , Laurent Pinchart Cc: Hans Verkuil , linux-media@vger.kernel.org, linux-kernel@vger.kernel.org, linux-leds@vger.kernel.org, Richard Leitner X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=ed25519-sha256; t=1745931554; l=1793; i=richard.leitner@linux.dev; s=20250225; h=from:subject:message-id; bh=0nzpfTzsTCcWDqac7ZTk2BZgJrXNm8rZpSw6OMimBsU=; b=q0HdotQ1a3Lpu50SYXXrSIedy34zGRbVP85oeqT3uX74IjThduRjeyIdqv7WKOAQl3DpQ5spv a9RTte8pwtUAH8OaPV3ZJBAk66Dz2jwehtJHkJGzaBMI8/zwriVjhUX 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 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 --- 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..f9ed7273a9f3eafe01c31b638e1= c8d9fcf5424af 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"; =20 /* 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-c= ontrols.h index 72e32814ea83dee5f1202c1249eac7cf3b85a22a..72c6bd26e2dfa23a0224e745e5c= d07c9fca0c8b5 100644 --- a/include/uapi/linux/v4l2-controls.h +++ b/include/uapi/linux/v4l2-controls.h @@ -1180,6 +1180,7 @@ enum v4l2_flash_strobe_source { =20 #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) =20 =20 /* JPEG-class control IDs */ --=20 2.47.2