提交 d0235677 编写于 作者: L Linus Walleij

gpio/tegra: convert to use linear irqdomain

The Tegra driver tries to do the work of irq_domain_add_linear()
by reserving a bunch of descriptors somewhere and keeping track
of the base offset, then calling irq_domain_add_legacy(). Let's
stop doing that and simply use the linear IRQ domain.

For this to work: use irq_create_mapping() in the IRQ iterator
so that the descriptors get allocated here.

Cc: Rob Herring <rob.herring@calxeda.com>
Cc: Grant Likely <grant.likely@secretlab.ca>
Tested-by: NStephen Warren <swarren@nvidia.com>
Acked-by: NStephen Warren <swarren@nvidia.com>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>
上级 529f2ad5
......@@ -380,7 +380,6 @@ static int __devinit tegra_gpio_probe(struct platform_device *pdev)
{
const struct of_device_id *match;
struct tegra_gpio_soc_config *config;
int irq_base;
struct resource *res;
struct tegra_gpio_bank *bank;
int gpio;
......@@ -417,14 +416,11 @@ static int __devinit tegra_gpio_probe(struct platform_device *pdev)
return -ENODEV;
}
irq_base = irq_alloc_descs(-1, 0, tegra_gpio_chip.ngpio, 0);
if (irq_base < 0) {
dev_err(&pdev->dev, "Couldn't allocate IRQ numbers\n");
return -ENODEV;
}
irq_domain = irq_domain_add_legacy(pdev->dev.of_node,
tegra_gpio_chip.ngpio, irq_base, 0,
irq_domain = irq_domain_add_linear(pdev->dev.of_node,
tegra_gpio_chip.ngpio,
&irq_domain_simple_ops, NULL);
if (!irq_domain)
return -ENODEV;
for (i = 0; i < tegra_gpio_bank_count; i++) {
res = platform_get_resource(pdev, IORESOURCE_IRQ, i);
......@@ -464,7 +460,7 @@ static int __devinit tegra_gpio_probe(struct platform_device *pdev)
gpiochip_add(&tegra_gpio_chip);
for (gpio = 0; gpio < tegra_gpio_chip.ngpio; gpio++) {
int irq = irq_find_mapping(irq_domain, gpio);
int irq = irq_create_mapping(irq_domain, gpio);
/* No validity check; all Tegra GPIOs are valid IRQs */
bank = &tegra_gpio_banks[GPIO_BANK(gpio)];
......
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