diff options
| author | Marek Vasut <marex@denx.de> | 2020-03-24 00:51:32 +0100 |
|---|---|---|
| committer | Marc Zyngier <maz@kernel.org> | 2020-03-24 11:12:34 +0000 |
| commit | 00760d3cd9de2ccee6b73e30b53e71704a99209e (patch) | |
| tree | 1b03b9e52a8e02ee47e32c7ece039d4ae3ae9ec8 /drivers | |
| parent | eeaa4b24e5032707ee4286b6a2bcc5fb85eba4a4 (diff) | |
| download | lwn-00760d3cd9de2ccee6b73e30b53e71704a99209e.tar.gz lwn-00760d3cd9de2ccee6b73e30b53e71704a99209e.zip | |
irqchip/stm32: Retrigger both in eoi and unmask callbacks
Sampling the IRQ line state in EOI and retriggering the interrupt to
work around missing level-triggered interrupt support only works for
non-threaded interrupts. Threaded interrupts must be retriggered the
same way in unmask callback.
Signed-off-by: Marek Vasut <marex@denx.de>
[maz: fixed missing static attribute]
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20200323235132.530550-1-marex@denx.de
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/pinctrl/stm32/pinctrl-stm32.c | 18 |
1 files changed, 14 insertions, 4 deletions
diff --git a/drivers/pinctrl/stm32/pinctrl-stm32.c b/drivers/pinctrl/stm32/pinctrl-stm32.c index d330b30729a5..af3b24f26ff2 100644 --- a/drivers/pinctrl/stm32/pinctrl-stm32.c +++ b/drivers/pinctrl/stm32/pinctrl-stm32.c @@ -304,18 +304,22 @@ static const struct gpio_chip stm32_gpio_template = { .get_direction = stm32_gpio_get_direction, }; -void stm32_gpio_irq_eoi(struct irq_data *d) +static void stm32_gpio_irq_trigger(struct irq_data *d) { struct stm32_gpio_bank *bank = d->domain->host_data; int level; - irq_chip_eoi_parent(d); - /* If level interrupt type then retrig */ level = stm32_gpio_get(&bank->gpio_chip, d->hwirq); if ((level == 0 && bank->irq_type[d->hwirq] == IRQ_TYPE_LEVEL_LOW) || (level == 1 && bank->irq_type[d->hwirq] == IRQ_TYPE_LEVEL_HIGH)) irq_chip_retrigger_hierarchy(d); +} + +static void stm32_gpio_irq_eoi(struct irq_data *d) +{ + irq_chip_eoi_parent(d); + stm32_gpio_irq_trigger(d); }; static int stm32_gpio_set_type(struct irq_data *d, unsigned int type) @@ -371,12 +375,18 @@ static void stm32_gpio_irq_release_resources(struct irq_data *irq_data) gpiochip_unlock_as_irq(&bank->gpio_chip, irq_data->hwirq); } +static void stm32_gpio_irq_unmask(struct irq_data *d) +{ + irq_chip_unmask_parent(d); + stm32_gpio_irq_trigger(d); +} + static struct irq_chip stm32_gpio_irq_chip = { .name = "stm32gpio", .irq_eoi = stm32_gpio_irq_eoi, .irq_ack = irq_chip_ack_parent, .irq_mask = irq_chip_mask_parent, - .irq_unmask = irq_chip_unmask_parent, + .irq_unmask = stm32_gpio_irq_unmask, .irq_set_type = stm32_gpio_set_type, .irq_set_wake = irq_chip_set_wake_parent, .irq_request_resources = stm32_gpio_irq_request_resources, |