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added ar7_wdt fix by Alex

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SVN-Revision: 8762
This commit is contained in:
Matteo Croce 2007-09-12 15:30:00 +00:00
parent 339eba5fbd
commit 87cef9d9a2
1 changed files with 25 additions and 22 deletions
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47
target/linux/ar7/files/drivers/char/watchdog/ar7_wdt.c
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@ -55,6 +55,9 @@ static int nowayout = WATCHDOG_NOWAYOUT;
module_param(nowayout, int, 0); module_param(nowayout, int, 0);
MODULE_PARM_DESC(nowayout, "Disable watchdog shutdown on close"); MODULE_PARM_DESC(nowayout, "Disable watchdog shutdown on close");
#define READ_REG(x) readl((void __iomem*)&(x))
#define WRITE_REG(x,v) writel((v), (void __iomem*)&(x))
struct ar7_wdt { struct ar7_wdt {
u32 kick_lock; u32 kick_lock;
u32 kick; u32 kick;
@ -93,11 +96,11 @@ static void ar7_wdt_get_regs(void)
static void ar7_wdt_kick(u32 value) static void ar7_wdt_kick(u32 value)
{ {
ar7_wdt->kick_lock = 0x5555; WRITE_REG(ar7_wdt->kick_lock, 0x5555);
if ((ar7_wdt->kick_lock & 3) == 1) { if ((READ_REG(ar7_wdt->kick_lock) & 3) == 1) {
ar7_wdt->kick_lock = 0xaaaa; WRITE_REG(ar7_wdt->kick_lock, 0xaaaa);
if ((ar7_wdt->kick_lock & 3) == 3) { if ((READ_REG(ar7_wdt->kick_lock) & 3) == 3) {
ar7_wdt->kick = value; WRITE_REG(ar7_wdt->kick, value);
return; return;
} }
} }
@ -106,11 +109,11 @@ static void ar7_wdt_kick(u32 value)
static void ar7_wdt_prescale(u32 value) static void ar7_wdt_prescale(u32 value)
{ {
ar7_wdt->prescale_lock = 0x5a5a; WRITE_REG(ar7_wdt->prescale_lock, 0x5a5a);
if ((ar7_wdt->prescale_lock & 3) == 1) { if ((READ_REG(ar7_wdt->prescale_lock) & 3) == 1) {
ar7_wdt->prescale_lock = 0xa5a5; WRITE_REG(ar7_wdt->prescale_lock, 0xa5a5);
if ((ar7_wdt->prescale_lock & 3) == 3) { if ((READ_REG(ar7_wdt->prescale_lock) & 3) == 3) {
ar7_wdt->prescale = value; WRITE_REG(ar7_wdt->prescale, value);
return; return;
} }
} }
@ -119,11 +122,11 @@ static void ar7_wdt_prescale(u32 value)
static void ar7_wdt_change(u32 value) static void ar7_wdt_change(u32 value)
{ {
ar7_wdt->change_lock = 0x6666; WRITE_REG(ar7_wdt->change_lock, 0x6666);
if ((ar7_wdt->change_lock & 3) == 1) { if ((READ_REG(ar7_wdt->change_lock) & 3) == 1) {
ar7_wdt->change_lock = 0xbbbb; WRITE_REG(ar7_wdt->change_lock, 0xbbbb);
if ((ar7_wdt->change_lock & 3) == 3) { if ((READ_REG(ar7_wdt->change_lock) & 3) == 3) {
ar7_wdt->change = value; WRITE_REG(ar7_wdt->change, value);
return; return;
} }
} }
@ -132,13 +135,13 @@ static void ar7_wdt_change(u32 value)
static void ar7_wdt_disable(u32 value) static void ar7_wdt_disable(u32 value)
{ {
ar7_wdt->disable_lock = 0x7777; WRITE_REG(ar7_wdt->disable_lock, 0x7777);
if ((ar7_wdt->disable_lock & 3) == 1) { if ((READ_REG(ar7_wdt->disable_lock) & 3) == 1) {
ar7_wdt->disable_lock = 0xcccc; WRITE_REG(ar7_wdt->disable_lock, 0xcccc);
if ((ar7_wdt->disable_lock & 3) == 2) { if ((READ_REG(ar7_wdt->disable_lock) & 3) == 2) {
ar7_wdt->disable_lock = 0xdddd; WRITE_REG(ar7_wdt->disable_lock, 0xdddd);
if ((ar7_wdt->disable_lock & 3) == 3) { if ((READ_REG(ar7_wdt->disable_lock) & 3) == 3) {
ar7_wdt->disable = value; WRITE_REG(ar7_wdt->disable, value);
return; return;
} }
} }