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authorAlexandre Torgue <alexandre.torgue@st.com>2020-02-19 17:32:28 +0300
committerMarc Zyngier <maz@kernel.org>2020-03-08 17:25:45 +0300
commit25591d4c6459ce416a319832ce806be7b86183dc (patch)
treee8d15f4ece4a9ebe8cec35ff594eb5e0e6cf1f40 /drivers/irqchip/irq-stm32-exti.c
parenta15111075a847432b90e1534095b195aac8d9ec2 (diff)
downloadlinux-25591d4c6459ce416a319832ce806be7b86183dc.tar.xz
irqchip/stm32: Add irq retrigger support
This commit introduces retrigger support for stm32_ext_h chip. It consists to rise the GIC interrupt mapped to an EXTI line. Signed-off-by: Alexandre Torgue <alexandre.torgue@st.com> Signed-off-by: Marc Zyngier <maz@kernel.org> Tested-by: Marek Vasut <marex@denx.de> Link: https://lore.kernel.org/r/20200219143229.18084-2-alexandre.torgue@st.com
Diffstat (limited to 'drivers/irqchip/irq-stm32-exti.c')
-rw-r--r--drivers/irqchip/irq-stm32-exti.c14
1 files changed, 13 insertions, 1 deletions
diff --git a/drivers/irqchip/irq-stm32-exti.c b/drivers/irqchip/irq-stm32-exti.c
index e00f2fa27f00..faa8482c8246 100644
--- a/drivers/irqchip/irq-stm32-exti.c
+++ b/drivers/irqchip/irq-stm32-exti.c
@@ -604,12 +604,24 @@ static void stm32_exti_h_syscore_deinit(void)
unregister_syscore_ops(&stm32_exti_h_syscore_ops);
}
+static int stm32_exti_h_retrigger(struct irq_data *d)
+{
+ struct stm32_exti_chip_data *chip_data = irq_data_get_irq_chip_data(d);
+ const struct stm32_exti_bank *stm32_bank = chip_data->reg_bank;
+ void __iomem *base = chip_data->host_data->base;
+ u32 mask = BIT(d->hwirq % IRQS_PER_BANK);
+
+ writel_relaxed(mask, base + stm32_bank->swier_ofst);
+
+ return 0;
+}
+
static struct irq_chip stm32_exti_h_chip = {
.name = "stm32-exti-h",
.irq_eoi = stm32_exti_h_eoi,
.irq_mask = stm32_exti_h_mask,
.irq_unmask = stm32_exti_h_unmask,
- .irq_retrigger = irq_chip_retrigger_hierarchy,
+ .irq_retrigger = stm32_exti_h_retrigger,
.irq_set_type = stm32_exti_h_set_type,
.irq_set_wake = stm32_exti_h_set_wake,
.flags = IRQCHIP_MASK_ON_SUSPEND,