On 13/11/14 15:37, Yingjoe Chen wrote:
> Add support to use gic as a parent for stacked irq domain.
>
> Signed-off-by: Yingjoe Chen <yingjoe.chen@xxxxxxxxxxxx>
> ---
> drivers/irqchip/Kconfig | 1 +
> drivers/irqchip/irq-gic.c | 80 ++++++++++++++++++++++++++++++++---------------
> 2 files changed, 55 insertions(+), 26 deletions(-)
>
> diff --git a/drivers/irqchip/Kconfig b/drivers/irqchip/Kconfig
> index b21f12f..7f34138 100644
> --- a/drivers/irqchip/Kconfig
> +++ b/drivers/irqchip/Kconfig
> @@ -5,6 +5,7 @@ config IRQCHIP
> config ARM_GIC
> bool
> select IRQ_DOMAIN
> + select IRQ_DOMAIN_HIERARCHY
> select MULTI_IRQ_HANDLER
>
> config GIC_NON_BANKED
> diff --git a/drivers/irqchip/irq-gic.c b/drivers/irqchip/irq-gic.c
> index 38493ff..fe9ab93 100644
> --- a/drivers/irqchip/irq-gic.c
> +++ b/drivers/irqchip/irq-gic.c
> @@ -788,17 +788,16 @@ static int gic_irq_domain_map(struct irq_domain *d, unsigned int irq,
> {
> if (hw < 32) {
> irq_set_percpu_devid(irq);
> - irq_set_chip_and_handler(irq, &gic_chip,
> - handle_percpu_devid_irq);
> + irq_domain_set_info(d, irq, hw, &gic_chip, d->host_data,
> + handle_percpu_devid_irq, NULL, NULL);
> set_irq_flags(irq, IRQF_VALID | IRQF_NOAUTOEN);
> } else {
> - irq_set_chip_and_handler(irq, &gic_chip,
> - handle_fasteoi_irq);
> + irq_domain_set_info(d, irq, hw, &gic_chip, d->host_data,
> + handle_fasteoi_irq, NULL, NULL);
> set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
>
> gic_routable_irq_domain_ops->map(d, irq, hw);
> }
> - irq_set_chip_data(irq, d->host_data);
> return 0;
> }
>
> @@ -814,8 +813,6 @@ static int gic_irq_domain_xlate(struct irq_domain *d,
> {
> unsigned long ret = 0;
>
> - if (d->of_node != controller)
> - return -EINVAL;
I'm not sure if removing that check is the right thing to do. You had to
remove it because your sysirq driver passes its own of_phandle_args
directly to the GIC code. I think that's a bad idea, and you should fix
the sysirq layer instead.
Thanks,
M.
--
Jazz is not dead. It just smells funny...
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