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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>
This commit is contained in:
Henning Schild 2023-07-06 17:48:30 +02:00 committed by Hans de Goede
parent 1b3aa9701b
commit 15fe994ee5
1 changed files with 6 additions and 3 deletions
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9
drivers/watchdog/simatic-ipc-wdt.c
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@ -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);