watchdog: Add watchdog support for W83627DHG chip
The following adds watchdog support for the Winbond W83627DHG chip.
I have tested it on a PQ7-M102XL (Intel Atom) board.
Signed-off-by: Benny Lønstrup Ammitzbøll <benny@ammitzboell-consult.dk>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
diff --git a/drivers/watchdog/Kconfig b/drivers/watchdog/Kconfig
index a5ad77e..8a3aa2f 100644
--- a/drivers/watchdog/Kconfig
+++ b/drivers/watchdog/Kconfig
@@ -722,14 +722,15 @@
Most people will say N.
config W83627HF_WDT
- tristate "W83627HF Watchdog Timer"
+ tristate "W83627HF/W83627DHG Watchdog Timer"
depends on X86
---help---
This is the driver for the hardware watchdog on the W83627HF chipset
as used in Advantech PC-9578 and Tyan S2721-533 motherboards
- (and likely others). This watchdog simply watches your kernel to
- make sure it doesn't freeze, and if it does, it reboots your computer
- after a certain amount of time.
+ (and likely others). The driver also supports the W83627DHG chip.
+ This watchdog simply watches your kernel to make sure it doesn't
+ freeze, and if it does, it reboots your computer after a certain
+ amount of time.
To compile this driver as a module, choose M here: the
module will be called w83627hf_wdt.
diff --git a/drivers/watchdog/w83627hf_wdt.c b/drivers/watchdog/w83627hf_wdt.c
index 0f5288d..48f2e01 100644
--- a/drivers/watchdog/w83627hf_wdt.c
+++ b/drivers/watchdog/w83627hf_wdt.c
@@ -42,7 +42,7 @@
#include <asm/system.h>
-#define WATCHDOG_NAME "w83627hf/thf/hg WDT"
+#define WATCHDOG_NAME "w83627hf/thf/hg/dhg WDT"
#define PFX WATCHDOG_NAME ": "
#define WATCHDOG_TIMEOUT 60 /* 60 sec default timeout */
@@ -89,7 +89,7 @@
c = ((inb_p(WDT_EFDR) & 0xf7) | 0x04); /* select WDT0 */
outb_p(0x2b, WDT_EFER);
outb_p(c, WDT_EFDR); /* set GPIO3 to WDT0 */
- } else if (c == 0x88) { /* W83627EHF */
+ } else if (c == 0x88 || c == 0xa0) { /* W83627EHF / W83627DHG */
outb_p(0x2d, WDT_EFER); /* select GPIO5 */
c = inb_p(WDT_EFDR) & ~0x01; /* PIN77 -> WDT0# */
outb_p(0x2d, WDT_EFER);
@@ -321,7 +321,7 @@
{
int ret;
- printk(KERN_INFO "WDT driver for the Winbond(TM) W83627HF/THF/HG Super I/O chip initialising.\n");
+ printk(KERN_INFO "WDT driver for the Winbond(TM) W83627HF/THF/HG/DHG Super I/O chip initialising.\n");
if (wdt_set_heartbeat(timeout)) {
wdt_set_heartbeat(WATCHDOG_TIMEOUT);