diff options
| author | Youngmin Nam <youngmin.nam@samsung.com> | 2023-11-26 12:46:18 +0300 |
|---|---|---|
| committer | Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> | 2023-11-30 10:53:03 +0300 |
| commit | b77f5ef8ebe4d8ee3a712a216415d7f4d4d0acf2 (patch) | |
| tree | 7b76522021a06cfb7b49c7b85a8b43a516f625a0 /drivers | |
| parent | 904140fa45533f6d05071e24492013da16c46b7f (diff) | |
| download | linux-b77f5ef8ebe4d8ee3a712a216415d7f4d4d0acf2.tar.xz | |
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 <youngmin.nam@samsung.com>
Reviewed-by: Sam Protsenko <semen.protsenko@linaro.org>
Tested-by: Sam Protsenko <semen.protsenko@linaro.org>
Link: https://lore.kernel.org/r/20231126094618.2545116-1-youngmin.nam@samsung.com
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/pinctrl/samsung/pinctrl-exynos.c | 14 |
1 files changed, 14 insertions, 0 deletions
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, }, |