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Thu, 6 Jul 2023 17:48:43 +0200 Received: from md1za8fc.ppmd.siemens.net (139.25.69.40) by DEMCHDC8WAA.ad011.siemens.net (139.25.226.104) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.25; Thu, 6 Jul 2023 17:48:42 +0200 From: Henning Schild To: Hans de Goede , Mark Gross , , CC: Wim Van Sebroeck , Guenter Roeck , Jean Delvare , , , "Tobias Schaffner" , Gerd Haeussler , Henning Schild Subject: [PATCH 1/2] watchdog: simatic-ipc-wdt: make IO region access of one model muxed Date: Thu, 6 Jul 2023 17:48:30 +0200 Message-ID: <20230706154831.19100-2-henning.schild@siemens.com> X-Mailer: git-send-email 2.39.3 In-Reply-To: <20230706154831.19100-1-henning.schild@siemens.com> References: <20230706154831.19100-1-henning.schild@siemens.com> MIME-Version: 1.0 X-Originating-IP: [139.25.69.40] X-ClientProxiedBy: DEMCHDC8WBA.ad011.siemens.net (139.25.226.105) To DEMCHDC8WAA.ad011.siemens.net (139.25.226.104) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DB5EUR01FT051:EE_|DB9PR10MB6377:EE_ X-MS-Office365-Filtering-Correlation-Id: da47eda8-79d7-458b-2e52-08db7e387a43 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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X-OriginatorOrg: siemens.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 06 Jul 2023 15:48:43.6767 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: da47eda8-79d7-458b-2e52-08db7e387a43 X-MS-Exchange-CrossTenant-Id: 38ae3bcd-9579-4fd4-adda-b42e1495d55a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=38ae3bcd-9579-4fd4-adda-b42e1495d55a;Ip=[194.138.21.75];Helo=[hybrid.siemens.com] X-MS-Exchange-CrossTenant-AuthSource: DB5EUR01FT051.eop-EUR01.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DB9PR10MB6377 Precedence: bulk List-ID: X-Mailing-List: linux-watchdog@vger.kernel.org The IO region used for the watchdog also hold CMOS battery monitoring information. Make the access muxed so that a hwmon driver can use the region as well. Signed-off-by: Henning Schild Acked-by: Guenter Roeck --- drivers/watchdog/simatic-ipc-wdt.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/drivers/watchdog/simatic-ipc-wdt.c b/drivers/watchdog/simatic-ipc-wdt.c index 6599695dc672..cdc1a2e15180 100644 --- a/drivers/watchdog/simatic-ipc-wdt.c +++ b/drivers/watchdog/simatic-ipc-wdt.c @@ -155,9 +155,8 @@ static int simatic_ipc_wdt_probe(struct platform_device *pdev) switch (plat->devmode) { case SIMATIC_IPC_DEVICE_227E: - if (!devm_request_region(dev, gp_status_reg_227e_res.start, - resource_size(&gp_status_reg_227e_res), - KBUILD_MODNAME)) { + res = &gp_status_reg_227e_res; + if (!request_muxed_region(res->start, resource_size(res), res->name)) { dev_err(dev, "Unable to register IO resource at %pR\n", &gp_status_reg_227e_res); @@ -210,6 +209,10 @@ static int simatic_ipc_wdt_probe(struct platform_device *pdev) if (wdd_data.bootstatus) dev_warn(dev, "last reboot caused by watchdog reset\n"); + if (plat->devmode == SIMATIC_IPC_DEVICE_227E) + release_region(gp_status_reg_227e_res.start, + resource_size(&gp_status_reg_227e_res)); + watchdog_set_nowayout(&wdd_data, nowayout); watchdog_stop_on_reboot(&wdd_data); return devm_watchdog_register_device(dev, &wdd_data);