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watchdog: it87_wdt: Add support for IT8728F watchdog. 

This works the same way IT8721F works, but it supports WDT_PWROK
(checked on the datasheet).

Signed-off-by: Diego Elio Pettenò <flameeyes@flameeyes.eu>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
This commit is contained in:
Diego Elio Pettenò 2012-03-14 20:49:04 +01:00 committed by Wim Van Sebroeck
parent 7050bd5499
commit 198ca01534
2 changed files with 11 additions and 3 deletions
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7
drivers/watchdog/Kconfig
View File

@ -596,7 +596,12 @@ config IT87_WDT
depends on X86 && EXPERIMENTAL depends on X86 && EXPERIMENTAL
---help--- ---help---
This is the driver for the hardware watchdog on the ITE IT8702, This is the driver for the hardware watchdog on the ITE IT8702,
IT8712, IT8716, IT8718, IT8720, IT8721, IT8726 Super I/O chips. IT8712, IT8716, IT8718, IT8720, IT8721, IT8726 and IT8728
Super I/O chips.
If the driver does not work, then make sure that the game port in
the BIOS is enabled.
This watchdog simply watches your kernel to make sure it doesn't This watchdog simply watches your kernel to make sure it doesn't
freeze, and if it does, it reboots your computer after a certain freeze, and if it does, it reboots your computer after a certain
amount of time. amount of time.

7
drivers/watchdog/it87_wdt.c
View File

@ -12,7 +12,8 @@
* http://www.ite.com.tw/ * http://www.ite.com.tw/
* *
* Support of the watchdog timers, which are available on * Support of the watchdog timers, which are available on
* IT8702, IT8712, IT8716, IT8718, IT8720, IT8721 and IT8726. * IT8702, IT8712, IT8716, IT8718, IT8720, IT8721, IT8726
* and IT8728.
* *
* This program is free software; you can redistribute it and/or * This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License * modify it under the terms of the GNU General Public License
@ -84,6 +85,7 @@
#define IT8720_ID 0x8720 #define IT8720_ID 0x8720
#define IT8721_ID 0x8721 #define IT8721_ID 0x8721
#define IT8726_ID 0x8726 /* the data sheet suggest wrongly 0x8716 */ #define IT8726_ID 0x8726 /* the data sheet suggest wrongly 0x8716 */
#define IT8728_ID 0x8728
/* GPIO Configuration Registers LDN=0x07 */ /* GPIO Configuration Registers LDN=0x07 */
#define WDTCTRL 0x71 #define WDTCTRL 0x71
@ -95,7 +97,7 @@
#define WDT_CIRINT 0x80 #define WDT_CIRINT 0x80
#define WDT_MOUSEINT 0x40 #define WDT_MOUSEINT 0x40
#define WDT_KYBINT 0x20 #define WDT_KYBINT 0x20
#define WDT_GAMEPORT 0x10 /* not in it8718, it8720, it8721 */ #define WDT_GAMEPORT 0x10 /* not in it8718, it8720, it8721, it8728 */
#define WDT_FORCE 0x02 #define WDT_FORCE 0x02
#define WDT_ZERO 0x01 #define WDT_ZERO 0x01
@ -616,6 +618,7 @@ static int __init it87_wdt_init(void)
case IT8718_ID: case IT8718_ID:
case IT8720_ID: case IT8720_ID:
case IT8721_ID: case IT8721_ID:
case IT8728_ID:
max_units = 65535; max_units = 65535;
try_gameport = 0; try_gameport = 0;
break; break;