Commit dc756026 authored by Kevin Hilman's avatar Kevin Hilman

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: default avatarKevin Hilman <khilman@deeprootsystems.com>
parent df4aab46
......@@ -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);
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