Commit b77f5ef8 authored by Youngmin Nam's avatar Youngmin Nam Committed by Krzysztof Kozlowski
Browse files

pinctrl: samsung: add irq_set_affinity() for non wake up external gpio interrupt 



To support affinity setting for non wake up external gpio interrupt, add
irq_set_affinity callback using irq number from pinctrl driver data.

Before this patch, changing the irq affinity of gpio interrupt is not
possible:

    # cat /proc/irq/418/smp_affinity
    3ff
    # echo 00f > /proc/irq/418/smp_affinity
    # cat /proc/irq/418/smp_affinity
    3ff
    # cat /proc/interrupts
               CPU0       CPU1       CPU2       CPU3    ...
    418:       3631          0          0          0    ...

With this patch applied, it's possible to change irq affinity of gpio
interrupt:

    # cat /proc/irq/418/smp_affinity
    3ff
    # echo 00f > /proc/irq/418/smp_affinity
    # cat /proc/irq/418/smp_affinity
    00f
    # cat /proc/interrupts
               CPU0       CPU1       CPU2       CPU3      ...
    418:       3893        201        181        188      ...

Signed-off-by: default avatarYoungmin Nam <youngmin.nam@samsung.com>
Reviewed-by: default avatarSam Protsenko <semen.protsenko@linaro.org>
Tested-by: default avatarSam Protsenko <semen.protsenko@linaro.org>
Link: https://lore.kernel.org/r/20231126094618.2545116-1-youngmin.nam@samsung.com


Signed-off-by: default avatarKrzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
parent 904140fa

drivers/pinctrl/samsung/pinctrl-exynos.c

+14 −0
Original line number Diff line number Diff line
@@ -147,6 +147,19 @@ static int exynos_irq_set_type(struct irq_data *irqd, unsigned int type) 
	return 0;

}



static int exynos_irq_set_affinity(struct irq_data *irqd,

				   const struct cpumask *dest, bool force)

{

	struct samsung_pin_bank *bank = irq_data_get_irq_chip_data(irqd);

	struct samsung_pinctrl_drv_data *d = bank->drvdata;

	struct irq_data *parent = irq_get_irq_data(d->irq);



	if (parent)

		return parent->chip->irq_set_affinity(parent, dest, force);



	return -EINVAL;

}



static int exynos_irq_request_resources(struct irq_data *irqd)

{

	struct samsung_pin_bank *bank = irq_data_get_irq_chip_data(irqd);
@@ -212,6 +225,7 @@ static const struct exynos_irq_chip exynos_gpio_irq_chip __initconst = { 
		.irq_mask = exynos_irq_mask,

		.irq_ack = exynos_irq_ack,

		.irq_set_type = exynos_irq_set_type,

		.irq_set_affinity = exynos_irq_set_affinity,

		.irq_request_resources = exynos_irq_request_resources,

		.irq_release_resources = exynos_irq_release_resources,

	},