The following commit has been merged into the irq/urgent branch of tip:
Commit-ID: 9c426b770bd088f18899f836093d810a83b59b98
Gitweb: https://git.kernel.org/tip/9c426b770bd088f18899f836093d810a83b59b98
Author: Talel Shenhar <talel@xxxxxxxxxx>
AuthorDate: Mon, 09 Sep 2019 11:39:18 +03:00
Committer: Marc Zyngier <maz@xxxxxxxxxx>
CommitterDate: Mon, 09 Sep 2019 18:11:47 +01:00
irqchip/al-fic: Add support for irq retrigger
Introduce interrupts retrigger support for Amazon's Annapurna Labs Fabric
Interrupt Controller.
Signed-off-by: Talel Shenhar <talel@xxxxxxxxxx>
Signed-off-by: Marc Zyngier <maz@xxxxxxxxxx>
Link: https://lore.kernel.org/r/1568018358-18985-1-git-send-email-talel@xxxxxxxxxx
---
drivers/irqchip/irq-al-fic.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/drivers/irqchip/irq-al-fic.c b/drivers/irqchip/irq-al-fic.c
index 1a57cee..0b0a737 100644
--- a/drivers/irqchip/irq-al-fic.c
+++ b/drivers/irqchip/irq-al-fic.c
@@ -15,6 +15,7 @@
/* FIC Registers */
#define AL_FIC_CAUSE 0x00
+#define AL_FIC_SET_CAUSE 0x08
#define AL_FIC_MASK 0x10
#define AL_FIC_CONTROL 0x28
@@ -126,6 +127,16 @@ static void al_fic_irq_handler(struct irq_desc *desc)
chained_irq_exit(irqchip, desc);
}
+static int al_fic_irq_retrigger(struct irq_data *data)
+{
+ struct irq_chip_generic *gc = irq_data_get_irq_chip_data(data);
+ struct al_fic *fic = gc->private;
+
+ writel_relaxed(BIT(data->hwirq), fic->base + AL_FIC_SET_CAUSE);
+
+ return 1;
+}
+
static int al_fic_register(struct device_node *node,
struct al_fic *fic)
{
@@ -159,6 +170,7 @@ static int al_fic_register(struct device_node *node,
gc->chip_types->chip.irq_unmask = irq_gc_mask_clr_bit;
gc->chip_types->chip.irq_ack = irq_gc_ack_clr_bit;
gc->chip_types->chip.irq_set_type = al_fic_irq_set_type;
+ gc->chip_types->chip.irq_retrigger = al_fic_irq_retrigger;
gc->chip_types->chip.flags = IRQCHIP_SKIP_SET_WAKE;
gc->private = fic;
|