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docs: watchdog: pcwd: fix typo and driver info.

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Correct a typo and some technical info for the pcwd driver.

Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <20260228010402.2389343-3-rdunlap@infradead.org>
This commit is contained in:
Randy Dunlap 2026-02-27 17:03:59 -08:00 committed by Jonathan Corbet
parent 551a7cf215
commit 996b4434be
1 changed files with 13 additions and 6 deletions
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19
Documentation/watchdog/pcwd-watchdog.rst
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@ -29,7 +29,7 @@ Documentation and Driver by Ken Hollis <kenji@bitgate.com>
to run the program with an "&" to run it in the background!)
If you want to write a program to be compatible with the PC Watchdog
driver, simply use of modify the watchdog test program:
driver, simply use or modify the watchdog test program:
tools/testing/selftests/watchdog/watchdog-test.c
@ -37,16 +37,23 @@ Documentation and Driver by Ken Hollis <kenji@bitgate.com>
WDIOC_GETSUPPORT
This returns the support of the card itself. This
returns in structure "PCWDS" which returns:
returns in structure watchdog_info:
identity = "PCWD"
options = list of supported options::
WDIOF_OVERHEAT
WDIOF_CARDRESET
WDIOF_KEEPALIVEPING
WDIOF_SETTIMEOUT
WDIOF_MAGICCLOSE
options = WDIOS_TEMPPANIC
(This card supports temperature)
firmware_version = xxxx
(Firmware version of the card)
WDIOC_GETSTATUS
This returns the status of the card, with the bits of
WDIOF_* bitwise-anded into the value. (The comments
WDIOF_* bitwise-ored into the value. (The comments
are in include/uapi/linux/watchdog.h)
WDIOC_GETBOOTSTATUS
@ -55,7 +62,7 @@ Documentation and Driver by Ken Hollis <kenji@bitgate.com>
WDIOC_GETTEMP
This returns the temperature of the card. (You can also
read /dev/watchdog, which gives a temperature update
read /dev/temperature, which gives a temperature update
every second.)
WDIOC_SETOPTIONS