diff options
| author | Tarun Kanti DebBarma <tarun.kanti@ti.com> | 2012-03-06 06:38:16 (GMT) |
|---|---|---|
| committer | Tarun Kanti DebBarma <tarun.kanti@ti.com> | 2012-03-21 04:48:54 (GMT) |
| commit | 2a900eb74c123a21054836ab2c63d6ff46f854c6 (patch) | |
| tree | 1607c091f750be0704c00d7e6f0446087f8659cf /drivers/gpio | |
| parent | 960edffe29dfd845ee532ee51398592cba96d701 (diff) | |
| download | linux-2a900eb74c123a21054836ab2c63d6ff46f854c6.tar.xz | |
gpio/omap: fix incorrect update to context.irqenable1
In _enable_gpio_irqbank() when bank->regs->set_irqenable is TRUE,
gpio_mask can be directly set by writing to set_irqenable register
without overwriting current value. In order to ensure the same is
stored in context.irqenable1, we must avoid overwriting it with
gpio_mask at the end of the function. Instead, update irqenable1
appropriately by OR'ing with gpio_mask.
For the case where bank->regs->set_irqenable is FALSE, irqenable1
can be directly overwritten with 'l' which holds correct computed
value.
if (bank->regs->set_irqenable) {
reg += bank->regs->set_irqenable;
l = gpio_mask;
} else {
reg += bank->regs->irqenable;
l = __raw_readl(reg);
if (bank->regs->irqenable_inv)
l &= ~gpio_mask;
else
l |= gpio_mask;
}
Make similar change for _disable_gpio_irqbank().
Signed-off-by: Tarun Kanti DebBarma <tarun.kanti@ti.com>
Reviewed-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Reviewed-by: Kevin Hilman <khilman@ti.com>
Signed-off-by: Kevin Hilman <khilman@ti.com>
Diffstat (limited to 'drivers/gpio')
| -rw-r--r-- | drivers/gpio/gpio-omap.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/gpio/gpio-omap.c b/drivers/gpio/gpio-omap.c index bcb1061..6c17e58 100644 --- a/drivers/gpio/gpio-omap.c +++ b/drivers/gpio/gpio-omap.c @@ -451,6 +451,7 @@ static void _enable_gpio_irqbank(struct gpio_bank *bank, int gpio_mask) if (bank->regs->set_irqenable) { reg += bank->regs->set_irqenable; l = gpio_mask; + bank->context.irqenable1 |= gpio_mask; } else { reg += bank->regs->irqenable; l = __raw_readl(reg); @@ -458,10 +459,10 @@ static void _enable_gpio_irqbank(struct gpio_bank *bank, int gpio_mask) l &= ~gpio_mask; else l |= gpio_mask; + bank->context.irqenable1 = l; } __raw_writel(l, reg); - bank->context.irqenable1 = l; } static void _disable_gpio_irqbank(struct gpio_bank *bank, int gpio_mask) @@ -472,6 +473,7 @@ static void _disable_gpio_irqbank(struct gpio_bank *bank, int gpio_mask) if (bank->regs->clr_irqenable) { reg += bank->regs->clr_irqenable; l = gpio_mask; + bank->context.irqenable1 &= ~gpio_mask; } else { reg += bank->regs->irqenable; l = __raw_readl(reg); @@ -479,10 +481,10 @@ static void _disable_gpio_irqbank(struct gpio_bank *bank, int gpio_mask) l |= gpio_mask; else l &= ~gpio_mask; + bank->context.irqenable1 = l; } __raw_writel(l, reg); - bank->context.irqenable1 = l; } static inline void _set_gpio_irqenable(struct gpio_bank *bank, int gpio, int enable) |