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watchdog: sp5100_tco: Add support for get_timeleft 

Tested on a Gigabyte X570 I AORUS PRO WIFI.

Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20210928065735.548966-1-linux@weissschuh.net
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
This commit is contained in:
Thomas Weißschuh 2021-09-28 08:57:35 +02:00 committed by Wim Van Sebroeck
parent 59b0f51335
commit 4d3d50f607
1 changed files with 9 additions and 0 deletions
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9
drivers/watchdog/sp5100_tco.c
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@ -10,6 +10,7 @@
* https://www.kernelconcepts.de
*
* See AMD Publication 43009 "AMD SB700/710/750 Register Reference Guide",
* AMD Publication 44413 "AMD SP5100 Register Reference Guide"
* AMD Publication 45482 "AMD SB800-Series Southbridges Register
* Reference Guide"
* AMD Publication 48751 "BIOS and Kernel Developer’s Guide (BKDG)
@ -144,6 +145,13 @@ static int tco_timer_set_timeout(struct watchdog_device *wdd,
return 0;
}
static unsigned int tco_timer_get_timeleft(struct watchdog_device *wdd)
{
struct sp5100_tco *tco = watchdog_get_drvdata(wdd);
return readl(SP5100_WDT_COUNT(tco->tcobase));
}
static u8 sp5100_tco_read_pm_reg8(u8 index)
{
outb(index, SP5100_IO_PM_INDEX_REG);
@ -386,6 +394,7 @@ static const struct watchdog_ops sp5100_tco_wdt_ops = {
.stop = tco_timer_stop,
.ping = tco_timer_ping,
.set_timeout = tco_timer_set_timeout,
.get_timeleft = tco_timer_get_timeleft,
};
static int sp5100_tco_probe(struct platform_device *pdev)