{"id":24723,"url":"https://patchwork.libcamera.org/api/1.1/patches/24723/?format=json","web_url":"https://patchwork.libcamera.org/patch/24723/","project":{"id":1,"url":"https://patchwork.libcamera.org/api/1.1/projects/1/?format=json","name":"libcamera","link_name":"libcamera","list_id":"libcamera_core","list_email":"libcamera-devel@lists.libcamera.org","web_url":"","scm_url":"","webscm_url":""},"msgid":"<20251023105651.78395-3-isaac.scott@ideasonboard.com>","date":"2025-10-23T10:56:49","name":"[2/4] libcamera: controls: Add CAMERA_MODULE_IDENTIFIER","commit_ref":null,"pull_url":null,"state":"new","archived":false,"hash":"3e579d6a3ec36818bb90d438e037c02160cab756","submitter":{"id":215,"url":"https://patchwork.libcamera.org/api/1.1/people/215/?format=json","name":"Isaac Scott","email":"isaac.scott@ideasonboard.com"},"delegate":null,"mbox":"https://patchwork.libcamera.org/patch/24723/mbox/","series":[{"id":5518,"url":"https://patchwork.libcamera.org/api/1.1/series/5518/?format=json","web_url":"https://patchwork.libcamera.org/project/libcamera/list/?series=5518","date":"2025-10-23T10:56:47","name":"libcamera: controls: Add support for camera module identifiers","version":1,"mbox":"https://patchwork.libcamera.org/series/5518/mbox/"}],"comments":"https://patchwork.libcamera.org/api/patches/24723/comments/","check":"pending","checks":"https://patchwork.libcamera.org/api/patches/24723/checks/","tags":{},"headers":{"Return-Path":"","X-Original-To":"parsemail@patchwork.libcamera.org","Delivered-To":"parsemail@patchwork.libcamera.org","Received":["from lancelot.ideasonboard.com (lancelot.ideasonboard.com\n\t[92.243.16.209])\n\tby patchwork.libcamera.org (Postfix) with ESMTPS id 2B788C3331\n\tfor ;\n\tThu, 23 Oct 2025 10:57:09 +0000 (UTC)","from lancelot.ideasonboard.com (localhost [IPv6:::1])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTP id 0DFDB607DD;\n\tThu, 23 Oct 2025 12:57:09 +0200 (CEST)","from perceval.ideasonboard.com (perceval.ideasonboard.com\n\t[213.167.242.64])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTPS id 2358F607B3\n\tfor ;\n\tThu, 23 Oct 2025 12:57:05 +0200 (CEST)","from isaac-ThinkPad-T16-Gen-2.infra.iob\n\t(cpc89244-aztw30-2-0-cust6594.18-1.cable.virginm.net [86.31.185.195])\n\tby perceval.ideasonboard.com (Postfix) with ESMTPSA id 32D77591;\n\tThu, 23 Oct 2025 12:55:20 +0200 (CEST)"],"Authentication-Results":"lancelot.ideasonboard.com; dkim=pass (1024-bit key;\n\tunprotected) header.d=ideasonboard.com header.i=@ideasonboard.com\n\theader.b=\"uHcool1f\"; dkim-atps=neutral","DKIM-Signature":"v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com;\n\ts=mail; t=1761216920;\n\tbh=ZT1EbruWzhvbayV7rJvu0dBT8JZzRGSCkee99VVXE7c=;\n\th=From:To:Cc:Subject:Date:In-Reply-To:References:From;\n\tb=uHcool1fG/oo10GjCpkZByzum5WgJIhLJ9OY7XkyCT3Lk8i/58hQqOvm2UvpAYnWL\n\tY/uGZp2WEUKQtfn0QQAusTfGTJoQqxdYbiPPtnU39MauPkkud6tbvzTMfvs2rgnEzU\n\tzP0xW6d7T8vhMWcUzVyYG8goZSFAzPNfU4PUH9fc=","From":"Isaac Scott ","To":"libcamera-devel@lists.libcamera.org","Cc":"Isaac Scott ","Subject":"[PATCH 2/4] libcamera: controls: Add CAMERA_MODULE_IDENTIFIER","Date":"Thu, 23 Oct 2025 11:56:49 +0100","Message-ID":"<20251023105651.78395-3-isaac.scott@ideasonboard.com>","X-Mailer":"git-send-email 2.43.0","In-Reply-To":"<20251023105651.78395-1-isaac.scott@ideasonboard.com>","References":"<20251023105651.78395-1-isaac.scott@ideasonboard.com>","MIME-Version":"1.0","Content-Transfer-Encoding":"8bit","X-BeenThere":"libcamera-devel@lists.libcamera.org","X-Mailman-Version":"2.1.29","Precedence":"list","List-Id":"","List-Unsubscribe":",\n\t","List-Archive":"","List-Post":"","List-Help":"","List-Subscribe":",\n\t","Errors-To":"libcamera-devel-bounces@lists.libcamera.org","Sender":"\"libcamera-devel\" "},"content":"Add a string control, and the necessary V4L2_CID to support a read-only\nstring payload. This can be used to store a string identifying a variant\nof a camera sensor (more accurately, a unique module including that\ncamera sensor).\n\nThe addition to v4l2-controls.h to add V4L2_CID_CAMERA_MODULE_IDENTIFIER has\nbeen posted upstream here:\n\nhttps://lore.kernel.org/linux-media/aPi9c_c9f0dkduLA@kekkonen.localdomain/\n\nSigned-off-by: Isaac Scott \n---\n include/linux/v4l2-controls.h | 2 ++\n src/libcamera/property_ids_core.yaml | 8 ++++++++\n 2 files changed, 10 insertions(+)","diff":"diff --git a/include/linux/v4l2-controls.h b/include/linux/v4l2-controls.h\nindex 4cfae0414..b96142c46 100644\n--- a/include/linux/v4l2-controls.h\n+++ b/include/linux/v4l2-controls.h\n@@ -1095,6 +1095,8 @@ enum v4l2_auto_focus_range {\n \n #define V4L2_CID_HDR_SENSOR_MODE\t\t(V4L2_CID_CAMERA_CLASS_BASE+36)\n \n+#define V4L2_CID_CAMERA_MODULE_IDENTIFIER\t(V4L2_CID_CAMERA_CLASS_BASE+37)\n+\n /* FM Modulator class control IDs */\n \n #define V4L2_CID_FM_TX_CLASS_BASE\t\t(V4L2_CTRL_CLASS_FM_TX | 0x900)\ndiff --git a/src/libcamera/property_ids_core.yaml b/src/libcamera/property_ids_core.yaml\nindex 834454a4e..5f47a4ea7 100644\n--- a/src/libcamera/property_ids_core.yaml\n+++ b/src/libcamera/property_ids_core.yaml\n@@ -701,4 +701,12 @@ controls:\n \n Different cameras may report identical devices.\n \n+ - CameraModuleIdentifier:\n+ type: string\n+ description: |\n+ Specify the camera module identifier.\n+\n+ The camera module identifier is a string that uniquely identifies the\n+ camera module. It is used to select the appropriate tuning file for\n+ the camera device.\n ...\n","prefixes":["2/4"]}