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authorBenny Loenstrup Ammitzboell <benny@ammitzboell-consult.dk>2010-11-11 16:08:41 +0100
committerWim Van Sebroeck <wim@iguana.be>2011-01-12 10:23:25 +0000
commit9c67bea419c384561eeb84bdf251d521a3234e45 (patch)
tree4ed8883d2836f1baf73c16758b7aa551ba134cbe
parentdf278dac2070e677cf22c30e1c78c5a753191375 (diff)
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>
-rw-r--r--drivers/watchdog/Kconfig9
-rw-r--r--drivers/watchdog/w83627hf_wdt.c6
2 files changed, 8 insertions, 7 deletions
diff --git a/drivers/watchdog/Kconfig b/drivers/watchdog/Kconfig
index a5ad77ef426..8a3aa2f050c 100644
--- a/drivers/watchdog/Kconfig
+++ b/drivers/watchdog/Kconfig
@@ -722,14 +722,15 @@ config SMSC37B787_WDT
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 0f5288df009..48f2e0148bb 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 @@ static void w83627hf_select_wd_register(void)
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 @@ static int __init wdt_init(void)
{
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);