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gpio: tegra186: Allow optional irq parent callbacks 

Make the tegra186 GPIO driver resistent to variable depth
interrupt hierarchy, which we are about to introduce.

No functionnal change yet.

Signed-off-by: Marc Zyngier <maz@kernel.org>
This commit is contained in:
Marc Zyngier 2020-10-05 10:27:27 +01:00
parent 5556797662
commit 986ec63d44
1 changed files with 13 additions and 2 deletions
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15
drivers/gpio/gpio-tegra186.c
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@ -430,7 +430,18 @@ static int tegra186_irq_set_type(struct irq_data *data, unsigned int type)
else
irq_set_handler_locked(data, handle_edge_irq);
return irq_chip_set_type_parent(data, type);
if (data->parent_data)
return irq_chip_set_type_parent(data, type);
return 0;
}
static int tegra186_irq_set_wake(struct irq_data *data, unsigned int on)
{
if (data->parent_data)
return irq_chip_set_wake_parent(data, on);
return 0;
}
static void tegra186_gpio_irq(struct irq_desc *desc)
@ -678,7 +689,7 @@ static int tegra186_gpio_probe(struct platform_device *pdev)
gpio->intc.irq_mask = tegra186_irq_mask;
gpio->intc.irq_unmask = tegra186_irq_unmask;
gpio->intc.irq_set_type = tegra186_irq_set_type;
gpio->intc.irq_set_wake = irq_chip_set_wake_parent;
gpio->intc.irq_set_wake = tegra186_irq_set_wake;
irq = &gpio->gpio.irq;
irq->chip = &gpio->intc;