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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>
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df4aab46a8
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1 changed files with 3 additions and 1 deletions
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@ -45,6 +45,7 @@ static struct gpio_controller __iomem * __init gpio2controller(unsigned gpio)
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return __gpio_to_controller(gpio);
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}
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static int __init davinci_gpio_irq_setup(void);
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/*--------------------------------------------------------------------------*/
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@ -157,6 +158,7 @@ static int __init davinci_gpio_setup(void)
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gpiochip_add(&chips[i].chip);
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}
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davinci_gpio_irq_setup();
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return 0;
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}
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pure_initcall(davinci_gpio_setup);
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@ -238,6 +240,7 @@ gpio_irq_handler(unsigned irq, struct irq_desc *desc)
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mask <<= 16;
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/* temporarily mask (level sensitive) parent IRQ */
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desc->chip->mask(irq);
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desc->chip->ack(irq);
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while (1) {
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u32 status;
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@ -333,4 +336,3 @@ static int __init davinci_gpio_irq_setup(void)
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return 0;
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}
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arch_initcall(davinci_gpio_irq_setup);
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