From b77f5ef8ebe4d8ee3a712a216415d7f4d4d0acf2 Mon Sep 17 00:00:00 2001 From: Youngmin Nam Date: Sun, 26 Nov 2023 18:46:18 +0900 Subject: 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: Youngmin Nam Reviewed-by: Sam Protsenko Tested-by: Sam Protsenko Link: https://lore.kernel.org/r/20231126094618.2545116-1-youngmin.nam@samsung.com Signed-off-by: Krzysztof Kozlowski --- drivers/pinctrl/samsung/pinctrl-exynos.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/drivers/pinctrl/samsung/pinctrl-exynos.c b/drivers/pinctrl/samsung/pinctrl-exynos.c index 6b58ec84e34b..5d7b788282e9 100644 --- a/drivers/pinctrl/samsung/pinctrl-exynos.c +++ b/drivers/pinctrl/samsung/pinctrl-exynos.c @@ -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, }, -- cgit v1.2.3