diff options
| author |   Talel Shenhar <talel@amazon.com> | 2019-09-09 11:39:18 +0300 |
|---|---|---|
| committer |   Marc Zyngier <maz@kernel.org> | 2019-09-09 18:11:47 +0100 |
| commit | 9c426b770bd088f18899f836093d810a83b59b98 (patch) | |
| tree | 8bd884a856d7c17a2d64170deba03a61a9e76bcc /drivers/irqchip/irq-al-fic.c | |
| parent | irqchip/gic-v3-its: Fix LPI release for Multi-MSI devices (diff) | |
| download | linux-dev-9c426b770bd088f18899f836093d810a83b59b98.tar.xz linux-dev-9c426b770bd088f18899f836093d810a83b59b98.zip | |
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@amazon.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/1568018358-18985-1-git-send-email-talel@amazon.com
Diffstat (limited to 'drivers/irqchip/irq-al-fic.c')
| -rw-r--r-- | drivers/irqchip/irq-al-fic.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/irqchip/irq-al-fic.c b/drivers/irqchip/irq-al-fic.c index 1a57cee3efab..0b0a73739756 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; |