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| author | Vlad Drukker <vlad@storewiz.com> | 2007-03-25 17:34:39 +0200 |
|---|---|---|
| committer | Wim Van Sebroeck <wim@iguana.be> | 2007-03-26 20:13:59 +0000 |
| commit | 0e94f2ee0d1947ba6c2c00c3e971ff93ce8edec1 (patch) | |
| tree | 656ebaa1906efaf43c6f372ecb11e58d601b965e /drivers/char | |
| parent | e0f2e3a06be513352cb4955313ed7e55909acd84 (diff) | |
| download | kernel_samsung_smdk4412-0e94f2ee0d1947ba6c2c00c3e971ff93ce8edec1.zip kernel_samsung_smdk4412-0e94f2ee0d1947ba6c2c00c3e971ff93ce8edec1.tar.gz kernel_samsung_smdk4412-0e94f2ee0d1947ba6c2c00c3e971ff93ce8edec1.tar.bz2 | |
[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>
Diffstat (limited to 'drivers/char')
| -rw-r--r-- | drivers/char/watchdog/w83627hf_wdt.c | 23 |
1 files changed, 18 insertions, 5 deletions
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 @@ static spinlock_t io_lock; /* 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 @@ MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started (default=" _ 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 @@ wdt_init(void) 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_exit(wdt_exit); 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); |