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gpio/mxc: move irq_domain_add_legacy call into gpio driver

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Move irq_domain_add_legacy call from imx*-dt.c into gpio driver and
have the gpio driver adopt irqdomain support for both DT and non-DT
boot.

With all imx platform code converted from static gpio irq number
computation to use run-time gpio_to_irq call, we can now use
irq_alloc_descs and irqdomain support to dynamically get irq_base
and have the mapping between gpio and irq number available without
using virtual_irq_start and MXC_GPIO_IRQ_START.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Cc: Grant Likely <grant.likely@secretlab.ca>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Acked-by: Dong Aisheng <dong.aisheng@linaro.org>
This commit is contained in:
Shawn Guo
2012-06-13 09:04:03 +08:00
parent 438196c371
commit 1ab7ef158d
5 changed files with 32 additions and 75 deletions
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12
arch/arm/mach-imx/imx51-dt.c
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@@ -52,20 +52,8 @@ static int __init imx51_tzic_add_irq_domain(struct device_node *np,
return 0;
}
static int __init imx51_gpio_add_irq_domain(struct device_node *np,
struct device_node *interrupt_parent)
{
static int gpio_irq_base = MXC_GPIO_IRQ_START + ARCH_NR_GPIOS;
gpio_irq_base -= 32;
irq_domain_add_legacy(np, 32, gpio_irq_base, 0, &irq_domain_simple_ops, NULL);
return 0;
}
static const struct of_device_id imx51_irq_match[] __initconst = {
{ .compatible = "fsl,imx51-tzic", .data = imx51_tzic_add_irq_domain, },
{ .compatible = "fsl,imx51-gpio", .data = imx51_gpio_add_irq_domain, },
{ /* sentinel */ }
};