diff options
| author | Thomas Weißschuh <linux@weissschuh.net> | 2021-09-28 08:57:35 +0200 |
|---|---|---|
| committer | Wim Van Sebroeck <wim@linux-watchdog.org> | 2021-10-26 21:31:11 +0200 |
| commit | 4d3d50f607b20b309f54b988c4b67cd6dd27b6d6 (patch) | |
| tree | 12f7a47c7c3689cfcadb0bc30fc334adc82b6c4a /drivers/watchdog/sp5100_tco.c | |
| parent | 59b0f51335644ee603260faaa4298c0115fb7187 (diff) | |
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>
Diffstat (limited to 'drivers/watchdog/sp5100_tco.c')
| -rw-r--r-- | drivers/watchdog/sp5100_tco.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/watchdog/sp5100_tco.c b/drivers/watchdog/sp5100_tco.c index a730ecbf78cd..dd9a744f82f8 100644 --- a/drivers/watchdog/sp5100_tco.c +++ b/drivers/watchdog/sp5100_tco.c @@ -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) |