diff options
| author | Achim Ehrlich <aehrlich@taskit.de> | 2010-03-17 14:50:29 +0100 |
|---|---|---|
| committer | trix <trix@windriver.com> | 2010-04-03 15:24:27 -0500 |
| commit | f936aa0528fe4f5d86168575528e0c52b485c642 (patch) | |
| tree | ddb43ac50bb72173d8809811e2d33874fcbc84d8 /drivers/watchdog/at91sam9_wdt.c | |
| parent | c9f72b3da8855c3c9679c821127cccd91e0380ed (diff) | |
Convert at91 watchdog driver to new SoC access
This converts the at91 watchdog driver to new c structure
type to access registers of the SoC
Signed-off-by: Achim Ehrlich <aehrlich@taskit.de>
Diffstat (limited to 'drivers/watchdog/at91sam9_wdt.c')
| -rw-r--r-- | drivers/watchdog/at91sam9_wdt.c | 21 |
1 files changed, 11 insertions, 10 deletions
diff --git a/drivers/watchdog/at91sam9_wdt.c b/drivers/watchdog/at91sam9_wdt.c index 5bb8b77afc..25afae748d 100644 --- a/drivers/watchdog/at91sam9_wdt.c +++ b/drivers/watchdog/at91sam9_wdt.c @@ -42,11 +42,10 @@ static int at91_wdt_settimeout(unsigned int timeout) { unsigned int reg; - unsigned int mr; + at91_wdt_t *wd = (at91_wdt_t *) AT91_WDT_BASE; /* Check if disabled */ - mr = at91_sys_read(AT91_WDT_MR); - if (mr & AT91_WDT_WDDIS) { + if (readl(&wd->mr) & AT91_WDT_MR_WDDIS) { printf("sorry, watchdog is disabled\n"); return -1; } @@ -57,19 +56,21 @@ static int at91_wdt_settimeout(unsigned int timeout) * Since WDV is a 12-bit counter, the maximum period is * 4096 / 256 = 16 seconds. */ - reg = AT91_WDT_WDRSTEN /* causes watchdog reset */ - /* | AT91_WDT_WDRPROC causes processor reset only */ - | AT91_WDT_WDDBGHLT /* disabled in debug mode */ - | AT91_WDT_WDD /* restart at any time */ - | (timeout & AT91_WDT_WDV); /* timer value */ - at91_sys_write(AT91_WDT_MR, reg); + + reg = AT91_WDT_MR_WDRSTEN /* causes watchdog reset */ + | AT91_WDT_MR_WDDBGHLT /* disabled in debug mode */ + | AT91_WDT_MR_WDD(0xfff) /* restart at any time */ + | AT91_WDT_MR_WDV(timeout); /* timer value */ + + writel(reg, &wd->mr); return 0; } void hw_watchdog_reset(void) { - at91_sys_write(AT91_WDT_CR, AT91_WDT_KEY | AT91_WDT_WDRSTT); + at91_wdt_t *wd = (at91_wdt_t *) AT91_WDT_BASE; + writel(AT91_WDT_CR_WDRSTT | AT91_WDT_CR_KEY, &wd->cr); } void hw_watchdog_init(void) |