Show a patch.

GET /api/1.1/patches/19214/?format=api
HTTP 200 OK
Allow: GET, PUT, PATCH, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "id": 19214,
    "url": "https://patchwork.libcamera.org/api/1.1/patches/19214/?format=api",
    "web_url": "https://patchwork.libcamera.org/patch/19214/",
    "project": {
        "id": 1,
        "url": "https://patchwork.libcamera.org/api/1.1/projects/1/?format=api",
        "name": "libcamera",
        "link_name": "libcamera",
        "list_id": "libcamera_core",
        "list_email": "libcamera-devel@lists.libcamera.org",
        "web_url": "",
        "scm_url": "",
        "webscm_url": ""
    },
    "msgid": "<20231120184529.730565-1-alain.volmat@foss.st.com>",
    "date": "2023-11-20T18:45:29",
    "name": "[libcamera-devel] libcamera: camera_sensor: fix HBLANK RO check",
    "commit_ref": null,
    "pull_url": null,
    "state": "new",
    "archived": false,
    "hash": "276bfb32ac4da2017d17f2447b758dd032dc981c",
    "submitter": {
        "id": 162,
        "url": "https://patchwork.libcamera.org/api/1.1/people/162/?format=api",
        "name": "Alain Volmat",
        "email": "alain.volmat@foss.st.com"
    },
    "delegate": null,
    "mbox": "https://patchwork.libcamera.org/patch/19214/mbox/",
    "series": [
        {
            "id": 4076,
            "url": "https://patchwork.libcamera.org/api/1.1/series/4076/?format=api",
            "web_url": "https://patchwork.libcamera.org/project/libcamera/list/?series=4076",
            "date": "2023-11-20T18:45:29",
            "name": "[libcamera-devel] libcamera: camera_sensor: fix HBLANK RO check",
            "version": 1,
            "mbox": "https://patchwork.libcamera.org/series/4076/mbox/"
        }
    ],
    "comments": "https://patchwork.libcamera.org/api/patches/19214/comments/",
    "check": "pending",
    "checks": "https://patchwork.libcamera.org/api/patches/19214/checks/",
    "tags": {},
    "headers": {
        "Return-Path": "<libcamera-devel-bounces@lists.libcamera.org>",
        "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 EDE9EBDE6B\n\tfor <parsemail@patchwork.libcamera.org>;\n\tMon, 20 Nov 2023 18:45:39 +0000 (UTC)",
            "from lancelot.ideasonboard.com (localhost [IPv6:::1])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTP id 432A3629AF;\n\tMon, 20 Nov 2023 19:45:39 +0100 (CET)",
            "from mx07-00178001.pphosted.com (mx07-00178001.pphosted.com\n\t[185.132.182.106])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTPS id EFD1F61DAF\n\tfor <libcamera-devel@lists.libcamera.org>;\n\tMon, 20 Nov 2023 19:45:36 +0100 (CET)",
            "from pps.filterd (m0369458.ppops.net [127.0.0.1])\n\tby mx07-00178001.pphosted.com (8.17.1.22/8.17.1.22) with ESMTP id\n\t3AKD0e2l026050; Mon, 20 Nov 2023 19:45:35 +0100",
            "from beta.dmz-eu.st.com (beta.dmz-eu.st.com [164.129.1.35])\n\tby mx07-00178001.pphosted.com (PPS) with ESMTPS id 3uf7q4647j-1\n\t(version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256\n\tverify=NOT); Mon, 20 Nov 2023 19:45:35 +0100 (CET)",
            "from euls16034.sgp.st.com (euls16034.sgp.st.com [10.75.44.20])\n\tby beta.dmz-eu.st.com (STMicroelectronics) with ESMTP id B83A310003D; \n\tMon, 20 Nov 2023 19:45:34 +0100 (CET)",
            "from Webmail-eu.st.com (shfdag1node1.st.com [10.75.129.69])\n\tby euls16034.sgp.st.com (STMicroelectronics) with ESMTP id\n\tABB83252252; Mon, 20 Nov 2023 19:45:34 +0100 (CET)",
            "from localhost (10.129.178.213) by SHFDAG1NODE1.st.com\n\t(10.75.129.69) with Microsoft SMTP Server (version=TLS1_2,\n\tcipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.27;\n\tMon, 20 Nov 2023 19:45:34 +0100"
        ],
        "DKIM-Signature": [
            "v=1; a=rsa-sha256; c=relaxed/simple; d=libcamera.org;\n\ts=mail; t=1700505939;\n\tbh=WNJRQuALJdq3G+qT0W+PPvaBTWv/U65WrswojyEIhzg=;\n\th=To:Date:Subject:List-Id:List-Unsubscribe:List-Archive:List-Post:\n\tList-Help:List-Subscribe:From:Reply-To:Cc:From;\n\tb=zcmjhkneTyiIa96pBxBmc1Dxa9EOC7zk6bWBRz7bnl1Gl5fdBVwUVG0gt1zgfsdSl\n\t9hKfyOUWGFfR6+iHMaU6SaXBZsWxxUkFjBIyczV+E0gbRv3g1xaNjeMXYFzzTSNXec\n\tuHzies07DBFoEwymEBaCEOg3j94Qds2VRhDjMdjCiEVpYMZDmfTf5tmetq7JRR8pHP\n\tPPNxIluFHOyUX04/GT8Wrxu1QsxLM0Q3h465snkKVAeuimcqXlomM9RgxzxtjMv55T\n\thWPDziORCXZVexoZ3iiGp9JMOxjsZJF290dwnA5iUBb+1zuDmDlAFqbBRoGB86QBTi\n\tS+Y5I5hWLbVrA==",
            "v=1; a=rsa-sha256; c=relaxed/relaxed; d=foss.st.com; h=\n\tfrom:to:cc:subject:date:message-id:mime-version\n\t:content-transfer-encoding:content-type; s=selector1; bh=n0lA1+8\n\tzcqFzHT3H/dbU5POVDPzzYaN+BTcFE0pgioM=; b=byMt5zDWVOHJLSdGL/G+cT5\n\tRbjMHy8V9ZIyOCsaBIhW3jKSVgkq+SaX2ECatO/8+4Xivw+0V07+mFFGGeOsaFKi\n\tiY4xfDx2bZSKVmDNkW8uAydEvjUXt1o4xnsr9wNx7dMTGbD5sEFO++LJO3psp/Oj\n\tlZ8zxhRYumoxFOrNP9uNuv2KYctN0ph7BgWZQlgFjDtLgZbMXvUURyFR4zOziLqo\n\t26uvPaBpKb9sx7dW5Y1AYoxVDF5VgxaAXtcS236Bum/oRwEc1FqwJQG8uIfRMpzd\n\tndtDU+uMKhE4NJnHmiWwOXw9291/aZo74oeuwQBwPo8R42gGCpnPPiM1sVPAbiw=\n\t="
        ],
        "Authentication-Results": "lancelot.ideasonboard.com; dkim=pass (2048-bit key; \n\tunprotected) header.d=foss.st.com\n\theader.i=@foss.st.com header.b=\"byMt5zDW\"; \n\tdkim-atps=neutral",
        "To": "<libcamera-devel@lists.libcamera.org>",
        "Date": "Mon, 20 Nov 2023 19:45:29 +0100",
        "Message-ID": "<20231120184529.730565-1-alain.volmat@foss.st.com>",
        "X-Mailer": "git-send-email 2.25.1",
        "MIME-Version": "1.0",
        "Content-Transfer-Encoding": "8bit",
        "Content-Type": "text/plain",
        "X-Originating-IP": "[10.129.178.213]",
        "X-ClientProxiedBy": "EQNCAS1NODE4.st.com (10.75.129.82) To SHFDAG1NODE1.st.com\n\t(10.75.129.69)",
        "X-Proofpoint-Virus-Version": "vendor=baseguard\n\tengine=ICAP:2.0.272, Aquarius:18.0.987, Hydra:6.0.619,\n\tFMLib:17.11.176.26\n\tdefinitions=2023-11-20_19,2023-11-20_01,2023-05-22_02",
        "Subject": "[libcamera-devel] [PATCH] libcamera: camera_sensor: fix HBLANK RO\n\tcheck",
        "X-BeenThere": "libcamera-devel@lists.libcamera.org",
        "X-Mailman-Version": "2.1.29",
        "Precedence": "list",
        "List-Id": "<libcamera-devel.lists.libcamera.org>",
        "List-Unsubscribe": "<https://lists.libcamera.org/options/libcamera-devel>,\n\t<mailto:libcamera-devel-request@lists.libcamera.org?subject=unsubscribe>",
        "List-Archive": "<https://lists.libcamera.org/pipermail/libcamera-devel/>",
        "List-Post": "<mailto:libcamera-devel@lists.libcamera.org>",
        "List-Help": "<mailto:libcamera-devel-request@lists.libcamera.org?subject=help>",
        "List-Subscribe": "<https://lists.libcamera.org/listinfo/libcamera-devel>,\n\t<mailto:libcamera-devel-request@lists.libcamera.org?subject=subscribe>",
        "From": "Alain Volmat via libcamera-devel <libcamera-devel@lists.libcamera.org>",
        "Reply-To": "Alain Volmat <alain.volmat@foss.st.com>",
        "Cc": "Jacopo Mondi <jacopo.mondi@ideasonboard.com>",
        "Errors-To": "libcamera-devel-bounces@lists.libcamera.org",
        "Sender": "\"libcamera-devel\" <libcamera-devel-bounces@lists.libcamera.org>"
    },
    "content": "Perform the HBLANK readonly check by looking at the v4l2_query_ext_ctrl\nstruct for the V4L2_CID_HBLANK instead of checking for min/max values.\n\nSigned-off-by: Alain Volmat <alain.volmat@foss.st.com>\n---\n src/libcamera/camera_sensor.cpp | 17 ++++-------------\n 1 file changed, 4 insertions(+), 13 deletions(-)",
    "diff": "diff --git a/src/libcamera/camera_sensor.cpp b/src/libcamera/camera_sensor.cpp\nindex 0ef78d9c..3281c1f9 100644\n--- a/src/libcamera/camera_sensor.cpp\n+++ b/src/libcamera/camera_sensor.cpp\n@@ -188,21 +188,12 @@ int CameraSensor::init()\n \t * Set HBLANK to the minimum to start with a well-defined line length,\n \t * allowing IPA modules that do not modify HBLANK to use the sensor\n \t * minimum line length in their calculations.\n-\t *\n-\t * At present, there is no way of knowing if a control is read-only.\n-\t * As a workaround, assume that if the minimum and maximum values of\n-\t * the V4L2_CID_HBLANK control are the same, it implies the control\n-\t * is read-only.\n-\t *\n-\t * \\todo The control API ought to have a flag to specify if a control\n-\t * is read-only which could be used below.\n \t */\n \tif (ctrls.infoMap()->find(V4L2_CID_HBLANK) != ctrls.infoMap()->end()) {\n-\t\tconst ControlInfo hblank = ctrls.infoMap()->at(V4L2_CID_HBLANK);\n-\t\tconst int32_t hblankMin = hblank.min().get<int32_t>();\n-\t\tconst int32_t hblankMax = hblank.max().get<int32_t>();\n-\n-\t\tif (hblankMin != hblankMax) {\n+\t\tconst struct v4l2_query_ext_ctrl *hblankInfo = subdev_->controlInfo(V4L2_CID_HBLANK);\n+\t\tif (!(hblankInfo->flags & V4L2_CTRL_FLAG_READ_ONLY)) {\n+\t\t\tconst ControlInfo hblank = ctrls.infoMap()->at(V4L2_CID_HBLANK);\n+\t\t\tconst int32_t hblankMin = hblank.min().get<int32_t>();\n \t\t\tControlList ctrl(subdev_->controls());\n \n \t\t\tctrl.set(V4L2_CID_HBLANK, hblankMin);\n",
    "prefixes": [
        "libcamera-devel"
    ]
}