From dc75602628472d7fbc4cb43f010bf0257e95ab71 Mon Sep 17 00:00:00 2001 From: Kevin Hilman Date: Mon, 11 May 2009 11:04:53 -0700 Subject: [PATCH] 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 --- arch/arm/mach-davinci/gpio.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) 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); -- 2.39.2