diff options
| author | Ondrej Zajicek <santiago@crfreenet.org> | 2010-09-14 04:47:28 +0400 |
|---|---|---|
| committer | Wim Van Sebroeck <wim@iguana.be> | 2010-10-29 01:37:59 +0400 |
| commit | ee3e96583e42dcb4bd406ce4e5f824bd5bb80013 (patch) | |
| tree | cb9354622e01d57bd288603e01fa747717ddd61f /drivers | |
| parent | a2b89cd85ed55029400521a93dde868ac7150b31 (diff) | |
| download | linux-ee3e96583e42dcb4bd406ce4e5f824bd5bb80013.tar.xz | |
watchdog: it87_wdt: Add support for IT8720F watchdog
This simple patch adds support for a watchdog in IT8720F Super IO chip
to it87_wdt driver.
Signed-off-by: Ondrej Zajicek <santiago@crfreenet.org>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/watchdog/Kconfig | 9 | ||||
| -rw-r--r-- | drivers/watchdog/it87_wdt.c | 17 |
2 files changed, 16 insertions, 10 deletions
diff --git a/drivers/watchdog/Kconfig b/drivers/watchdog/Kconfig index c356146bd712..cc53136122f9 100644 --- a/drivers/watchdog/Kconfig +++ b/drivers/watchdog/Kconfig @@ -565,10 +565,11 @@ config IT87_WDT tristate "IT87 Watchdog Timer" depends on X86 && EXPERIMENTAL ---help--- - This is the driver for the hardware watchdog on the ITE IT8716, - IT8718, IT8726, IT8712(Version J,K) Super I/O chips. 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. + This is the driver for the hardware watchdog on the ITE + IT8716, IT8718, IT8720, IT8726, IT8712(Version J,K) Super I/O + chips. 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 it87_wdt. diff --git a/drivers/watchdog/it87_wdt.c b/drivers/watchdog/it87_wdt.c index b709b3b2d1ef..455de7714618 100644 --- a/drivers/watchdog/it87_wdt.c +++ b/drivers/watchdog/it87_wdt.c @@ -12,7 +12,7 @@ * http://www.ite.com.tw/ * * Support of the watchdog timers, which are available on - * IT8716, IT8718, IT8726 and IT8712 (J,K version). + * IT8716, IT8718, IT8720, IT8726 and IT8712 (J,K version). * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License @@ -45,7 +45,7 @@ #include <asm/system.h> -#define WATCHDOG_VERSION "1.12" +#define WATCHDOG_VERSION "1.13" #define WATCHDOG_NAME "IT87 WDT" #define PFX WATCHDOG_NAME ": " #define DRIVER_VERSION WATCHDOG_NAME " driver, v" WATCHDOG_VERSION "\n" @@ -80,6 +80,7 @@ #define IT8712_ID 0x8712 #define IT8716_ID 0x8716 #define IT8718_ID 0x8718 +#define IT8720_ID 0x8720 #define IT8726_ID 0x8726 /* the data sheet suggest wrongly 0x8716 */ /* GPIO Configuration Registers LDN=0x07 */ @@ -92,7 +93,7 @@ #define WDT_CIRINT 0x80 #define WDT_MOUSEINT 0x40 #define WDT_KYBINT 0x20 -#define WDT_GAMEPORT 0x10 /* not it8718 */ +#define WDT_GAMEPORT 0x10 /* not in it8718, it8720 */ #define WDT_FORCE 0x02 #define WDT_ZERO 0x01 @@ -529,6 +530,7 @@ static struct notifier_block wdt_notifier = { static int __init it87_wdt_init(void) { int rc = 0; + int try_gameport = !nogameport; u16 chip_type; u8 chip_rev; unsigned long flags; @@ -542,9 +544,12 @@ static int __init it87_wdt_init(void) switch (chip_type) { case IT8716_ID: - case IT8718_ID: case IT8726_ID: break; + case IT8718_ID: + case IT8720_ID: + try_gameport = 0; + break; case IT8712_ID: if (chip_rev > 7) break; @@ -571,7 +576,7 @@ static int __init it87_wdt_init(void) superio_outb(0x00, WDTCTRL); /* First try to get Gameport support */ - if (chip_type != IT8718_ID && !nogameport) { + if (try_gameport) { superio_select(GAMEPORT); base = superio_inw(BASEREG); if (!base) { @@ -676,7 +681,7 @@ err_out_region: spin_unlock_irqrestore(&spinlock, flags); } err_out: - if (chip_type != IT8718_ID && !nogameport) { + if (try_gameport) { spin_lock_irqsave(&spinlock, flags); superio_enter(); superio_select(GAMEPORT); |