[WATCHDOG] add support for the w83627thf chipset.
Added support for W83627THF, watchdog chip.
Signed-off-by: Vlad Drukker <vlad@storewiz.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
diff --git a/drivers/char/watchdog/w83627hf_wdt.c b/drivers/char/watchdog/w83627hf_wdt.c
index 337ee42..b46e7f4 100644
--- a/drivers/char/watchdog/w83627hf_wdt.c
+++ b/drivers/char/watchdog/w83627hf_wdt.c
@@ -1,5 +1,8 @@
/*
- * w83627hf WDT driver
+ * w83627hf/thf WDT driver
+ *
+ * (c) Copyright 2007 Vlad Drukker <vlad@storewiz.com>
+ * added support for W83627THF.
*
* (c) Copyright 2003 Pádraig Brady <P@draigBrady.com>
*
@@ -39,7 +42,7 @@
#include <asm/uaccess.h>
#include <asm/system.h>
-#define WATCHDOG_NAME "w83627hf WDT"
+#define WATCHDOG_NAME "w83627hf/thf WDT"
#define PFX WATCHDOG_NAME ": "
#define WATCHDOG_TIMEOUT 60 /* 60 sec default timeout */
@@ -50,7 +53,7 @@
/* You must set this - there is no sane way to probe for this board. */
static int wdt_io = 0x2E;
module_param(wdt_io, int, 0);
-MODULE_PARM_DESC(wdt_io, "w83627hf WDT io port (default 0x2E)");
+MODULE_PARM_DESC(wdt_io, "w83627hf/thf WDT io port (default 0x2E)");
static int timeout = WATCHDOG_TIMEOUT; /* in seconds */
module_param(timeout, int, 0);
@@ -71,9 +74,19 @@
static void
w83627hf_select_wd_register(void)
{
+ unsigned char c;
outb_p(0x87, WDT_EFER); /* Enter extended function mode */
outb_p(0x87, WDT_EFER); /* Again according to manual */
+ outb(0x20, WDT_EFER); /* check chip version */
+ c = inb(WDT_EFDR);
+ if (c == 0x82) { /* W83627THF */
+ outb_p(0x2b, WDT_EFER); /* select GPIO3 */
+ c = ((inb_p(WDT_EFDR) & 0xf7) | 0x04); /* select WDT0 */
+ outb_p(0x2b, WDT_EFER);
+ outb_p(c, WDT_EFDR); /* set GPIO3 to WDT0 */
+ }
+
outb_p(0x07, WDT_EFER); /* point to logical device number reg */
outb_p(0x08, WDT_EFDR); /* select logical device 8 (GPIO2) */
outb_p(0x30, WDT_EFER); /* select CR30 */
@@ -311,7 +324,7 @@
spin_lock_init(&io_lock);
- printk(KERN_INFO "WDT driver for the Winbond(TM) W83627HF Super I/O chip initialising.\n");
+ printk(KERN_INFO "WDT driver for the Winbond(TM) W83627HF/THF Super I/O chip initialising.\n");
if (wdt_set_heartbeat(timeout)) {
wdt_set_heartbeat(WATCHDOG_TIMEOUT);
@@ -367,5 +380,5 @@
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Pádraig Brady <P@draigBrady.com>");
-MODULE_DESCRIPTION("w83627hf WDT driver");
+MODULE_DESCRIPTION("w83627hf/thf WDT driver");
MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR);