diff options
| author | Ludovic Desroches <ludovic.desroches@atmel.com> | 2012-05-25 14:11:51 +0200 |
|---|---|---|
| committer | Nicolas Ferre <nicolas.ferre@atmel.com> | 2012-07-02 14:26:57 +0200 |
| commit | 42a859daaf6af4d234fcf964a421666d5cca3f6a (patch) | |
| tree | a025e57314554a8547b1afd782c7982631298adb /arch/arm/mach-at91/gpio.c | |
| parent | ARM: at91: fix at91_aic_write macro (diff) | |
| download | linux-42a859daaf6af4d234fcf964a421666d5cca3f6a.tar.xz linux-42a859daaf6af4d234fcf964a421666d5cca3f6a.zip | |
ARM: at91: aic can use fast eoi handler type
The Advanced Interrupt Controller allows us to use the fast EOI handler type.
It lets us remove the Atmel specific workaround into arch/arm/kernel/irq.c
used to indicate to the AIC the end of the interrupt treatment.
Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'arch/arm/mach-at91/gpio.c')
| -rw-r--r-- | arch/arm/mach-at91/gpio.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/arch/arm/mach-at91/gpio.c b/arch/arm/mach-at91/gpio.c index 325837a264c9..be42cf0e74bd 100644 --- a/arch/arm/mach-at91/gpio.c +++ b/arch/arm/mach-at91/gpio.c @@ -26,6 +26,8 @@ #include <linux/of_irq.h> #include <linux/of_gpio.h> +#include <asm/mach/irq.h> + #include <mach/hardware.h> #include <mach/at91_pio.h> @@ -585,15 +587,14 @@ static struct irq_chip gpio_irqchip = { static void gpio_irq_handler(unsigned irq, struct irq_desc *desc) { + struct irq_chip *chip = irq_desc_get_chip(desc); struct irq_data *idata = irq_desc_get_irq_data(desc); - struct irq_chip *chip = irq_data_get_irq_chip(idata); struct at91_gpio_chip *at91_gpio = irq_data_get_irq_chip_data(idata); void __iomem *pio = at91_gpio->regbase; unsigned long isr; int n; - /* temporarily mask (level sensitive) parent IRQ */ - chip->irq_ack(idata); + chained_irq_enter(chip, desc); for (;;) { /* Reading ISR acks pending (edge triggered) GPIO interrupts. * When there none are pending, we're finished unless we need @@ -614,7 +615,7 @@ static void gpio_irq_handler(unsigned irq, struct irq_desc *desc) n = find_next_bit(&isr, BITS_PER_LONG, n + 1); } } - chip->irq_unmask(idata); + chained_irq_exit(chip, desc); /* now it may re-trigger */ } |