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watchdog: simatic-ipc-wdt: make IO region access of one model muxed
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 <henning.schild@siemens.com> Acked-by: Guenter Roeck <linux@roeck-us.net> Link: https://lore.kernel.org/r/20230706154831.19100-2-henning.schild@siemens.com Reviewed-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Hans de Goede <hdegoede@redhat.com>
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@ -155,9 +155,8 @@ static int simatic_ipc_wdt_probe(struct platform_device *pdev)
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switch (plat->devmode) {
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case SIMATIC_IPC_DEVICE_227E:
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if (!devm_request_region(dev, gp_status_reg_227e_res.start,
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resource_size(&gp_status_reg_227e_res),
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KBUILD_MODNAME)) {
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res = &gp_status_reg_227e_res;
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if (!request_muxed_region(res->start, resource_size(res), res->name)) {
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dev_err(dev,
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"Unable to register IO resource at %pR\n",
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&gp_status_reg_227e_res);
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@ -210,6 +209,10 @@ static int simatic_ipc_wdt_probe(struct platform_device *pdev)
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if (wdd_data.bootstatus)
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dev_warn(dev, "last reboot caused by watchdog reset\n");
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if (plat->devmode == SIMATIC_IPC_DEVICE_227E)
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release_region(gp_status_reg_227e_res.start,
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resource_size(&gp_status_reg_227e_res));
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watchdog_set_nowayout(&wdd_data, nowayout);
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watchdog_stop_on_reboot(&wdd_data);
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return devm_watchdog_register_device(dev, &wdd_data);
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