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ARM: OMAP: Fix GPIO IRQ mask handling

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The GPIO IRQ mask was retrieved incorrectly in cases where we have a mask
register instead of an enable register. Also we should only return the
valid bits depending on the bank size.

This fixes a bug on 1510/1610 based OMAPs where GPIO IRQs are not
delivered.

Signed-off-by: Imre Deak <imre.deak@nokia.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
This commit is contained in:
Imre Deak 2006-06-26 16:16:07 -07:00 committed by Tony Lindgren
parent eca9e56eb8
commit 99c477074d
1 changed files with 16 additions and 1 deletions
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17
arch/arm/plat-omap/gpio.c
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@ -540,29 +540,44 @@ static inline void _clear_gpio_irqstatus(struct gpio_bank *bank, int gpio)
static u32 _get_gpio_irqbank_mask(struct gpio_bank *bank)
{
void __iomem *reg = bank->base;
int inv = 0;
u32 l;
u32 mask;
switch (bank->method) {
case METHOD_MPUIO:
reg += OMAP_MPUIO_GPIO_MASKIT;
mask = 0xffff;
inv = 1;
break;
case METHOD_GPIO_1510:
reg += OMAP1510_GPIO_INT_MASK;
mask = 0xffff;
inv = 1;
break;
case METHOD_GPIO_1610:
reg += OMAP1610_GPIO_IRQENABLE1;
mask = 0xffff;
break;
case METHOD_GPIO_730:
reg += OMAP730_GPIO_INT_MASK;
mask = 0xffffffff;
inv = 1;
break;
case METHOD_GPIO_24XX:
reg += OMAP24XX_GPIO_IRQENABLE1;
mask = 0xffffffff;
break;
default:
BUG();
return 0;
}
return __raw_readl(reg);
l = __raw_readl(reg);
if (inv)
l = ~l;
l &= mask;
return l;
}
static void _enable_gpio_irqbank(struct gpio_bank *bank, int gpio_mask, int enable)