summaryrefslogtreecommitdiffstats
path: root/arch/arm/plat-nomadik/gpio.c
diff options
context:
space:
mode:
authorRabin Vincent <rabin.vincent@stericsson.com>2010-05-06 11:42:42 +0200
committerRussell King <rmk+kernel@arm.linux.org.uk>2010-05-06 21:17:18 +0200
commit040e5ecddaa72f1f982b83cb205509bc9ce7f91e (patch)
tree0fea453828a29b4df0a4fe373bd13986c1bf4543 /arch/arm/plat-nomadik/gpio.c
parentARM: 6099/1: nomadik-gpio: fix mask/unmask (diff)
downloadlinux-040e5ecddaa72f1f982b83cb205509bc9ce7f91e.tar.xz
linux-040e5ecddaa72f1f982b83cb205509bc9ce7f91e.zip
ARM: 6100/1: nomadik-gpio: factor out helper to enable/disable irqs
Remove some nearly-duplicated code to make the following patch simpler. Acked-by: Alessandro Rubini <rubini@unipv.it> Acked-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/plat-nomadik/gpio.c')
-rw-r--r--arch/arm/plat-nomadik/gpio.c57
1 files changed, 27 insertions, 30 deletions
diff --git a/arch/arm/plat-nomadik/gpio.c b/arch/arm/plat-nomadik/gpio.c
index 38fc3b5d9872..a8ac545ddadc 100644
--- a/arch/arm/plat-nomadik/gpio.c
+++ b/arch/arm/plat-nomadik/gpio.c
@@ -107,40 +107,37 @@ static void nmk_gpio_irq_ack(unsigned int irq)
writel(nmk_gpio_get_bitmask(gpio), nmk_chip->addr + NMK_GPIO_IC);
}
-static void nmk_gpio_irq_mask(unsigned int irq)
+static void __nmk_gpio_irq_modify(struct nmk_gpio_chip *nmk_chip,
+ int gpio, bool enable)
{
- int gpio;
- struct nmk_gpio_chip *nmk_chip;
- unsigned long flags;
- u32 bitmask, reg;
-
- gpio = NOMADIK_IRQ_TO_GPIO(irq);
- nmk_chip = get_irq_chip_data(irq);
- bitmask = nmk_gpio_get_bitmask(gpio);
- if (!nmk_chip)
- return;
+ u32 bitmask = nmk_gpio_get_bitmask(gpio);
+ u32 reg;
- /* we must individually clear the two edges */
- spin_lock_irqsave(&nmk_chip->lock, flags);
+ /* we must individually set/clear the two edges */
if (nmk_chip->edge_rising & bitmask) {
reg = readl(nmk_chip->addr + NMK_GPIO_RIMSC);
- reg &= ~bitmask;
+ if (enable)
+ reg |= bitmask;
+ else
+ reg &= ~bitmask;
writel(reg, nmk_chip->addr + NMK_GPIO_RIMSC);
}
if (nmk_chip->edge_falling & bitmask) {
reg = readl(nmk_chip->addr + NMK_GPIO_FIMSC);
- reg &= ~bitmask;
+ if (enable)
+ reg |= bitmask;
+ else
+ reg &= ~bitmask;
writel(reg, nmk_chip->addr + NMK_GPIO_FIMSC);
}
- spin_unlock_irqrestore(&nmk_chip->lock, flags);
-};
+}
-static void nmk_gpio_irq_unmask(unsigned int irq)
+static void nmk_gpio_irq_modify(unsigned int irq, bool enable)
{
int gpio;
struct nmk_gpio_chip *nmk_chip;
unsigned long flags;
- u32 bitmask, reg;
+ u32 bitmask;
gpio = NOMADIK_IRQ_TO_GPIO(irq);
nmk_chip = get_irq_chip_data(irq);
@@ -148,21 +145,21 @@ static void nmk_gpio_irq_unmask(unsigned int irq)
if (!nmk_chip)
return;
- /* we must individually set the two edges */
spin_lock_irqsave(&nmk_chip->lock, flags);
- if (nmk_chip->edge_rising & bitmask) {
- reg = readl(nmk_chip->addr + NMK_GPIO_RIMSC);
- reg |= bitmask;
- writel(reg, nmk_chip->addr + NMK_GPIO_RIMSC);
- }
- if (nmk_chip->edge_falling & bitmask) {
- reg = readl(nmk_chip->addr + NMK_GPIO_FIMSC);
- reg |= bitmask;
- writel(reg, nmk_chip->addr + NMK_GPIO_FIMSC);
- }
+ __nmk_gpio_irq_modify(nmk_chip, gpio, enable);
spin_unlock_irqrestore(&nmk_chip->lock, flags);
}
+static void nmk_gpio_irq_mask(unsigned int irq)
+{
+ nmk_gpio_irq_modify(irq, false);
+};
+
+static void nmk_gpio_irq_unmask(unsigned int irq)
+{
+ nmk_gpio_irq_modify(irq, true);
+}
+
static int nmk_gpio_irq_set_type(unsigned int irq, unsigned int type)
{
int gpio;