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    Subject[PATCH 1/1] irqchip: al-fic: add support for irq retrigger
    Date
    Introduce interrupts retrigger support for Amazon's Annapurna Labs Fabric
    Interrupt Controller.

    Signed-off-by: Talel Shenhar <talel@amazon.com>
    ---
    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;

    --
    2.7.4
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