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| author | Kevin Hilman <khilman@deeprootsystems.com> | 2009-05-11 11:04:53 -0700 |
|---|---|---|
| committer | Kevin Hilman <khilman@deeprootsystems.com> | 2009-05-26 07:17:54 -0700 |
| commit | dc75602628472d7fbc4cb43f010bf0257e95ab71 (patch) | |
| tree | 05632b60b16e7e3334ea5000620c8e8ece844a3c | |
| parent | df4aab46a8256ac0f0c2701b3fe23b7dd05e6b48 (diff) | |
| download | lwn-dc75602628472d7fbc4cb43f010bf0257e95ab71.tar.gz lwn-dc75602628472d7fbc4cb43f010bf0257e95ab71.zip | |
davinci: fixups for banked GPIO interrupt handling
This patch seems to get me much more reliable performance using the
GPIO banked interrupts on dm355 for the dm9000 driver.
Changes include:
- init GPIO handling along with normal GPIO init
- mask the level-sensitive bank IRQ during handling
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
| -rw-r--r-- | arch/arm/mach-davinci/gpio.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/arch/arm/mach-davinci/gpio.c b/arch/arm/mach-davinci/gpio.c index 34ba4ceda347..40327b557d79 100644 --- a/arch/arm/mach-davinci/gpio.c +++ b/arch/arm/mach-davinci/gpio.c @@ -45,6 +45,7 @@ static struct gpio_controller __iomem * __init gpio2controller(unsigned gpio) return __gpio_to_controller(gpio); } +static int __init davinci_gpio_irq_setup(void); /*--------------------------------------------------------------------------*/ @@ -157,6 +158,7 @@ static int __init davinci_gpio_setup(void) gpiochip_add(&chips[i].chip); } + davinci_gpio_irq_setup(); return 0; } pure_initcall(davinci_gpio_setup); @@ -238,6 +240,7 @@ gpio_irq_handler(unsigned irq, struct irq_desc *desc) mask <<= 16; /* temporarily mask (level sensitive) parent IRQ */ + desc->chip->mask(irq); desc->chip->ack(irq); while (1) { u32 status; @@ -333,4 +336,3 @@ static int __init davinci_gpio_irq_setup(void) return 0; } -arch_initcall(davinci_gpio_irq_setup); |