Re: [PATCH] of: irq: Pass trigger type in IRQ resource flags
From: Tomasz Figa
Date: Wed Jun 05 2013 - 14:21:02 EST
Hi,
On Sunday 19 of May 2013 00:56:30 Tomasz Figa wrote:
> Some drivers might rely on availability of trigger flags in IRQ
> resource, for example to configure the hardware for particular interrupt
> type. However current code creating IRQ resources from data in device
> tree does not configure trigger flags in resulting resources.
>
> This patch solves the problem, based on the fact that
> irq_of_parse_and_map() configures the trigger based on DT interrupt
> specifier, IRQD_TRIGGER_* flags are consistent with IORESOURCE_IRQ_*,
> and we can get trigger type by calling irqd_get_trigger_type() after
> mapping the interrupt.
>
> Signed-off-by: Tomasz Figa <tomasz.figa@xxxxxxxxx>
> ---
> drivers/of/irq.c | 10 ++++++++++
> 1 file changed, 10 insertions(+)
>
> diff --git a/drivers/of/irq.c b/drivers/of/irq.c
> index a3c1c5a..79a7a26 100644
> --- a/drivers/of/irq.c
> +++ b/drivers/of/irq.c
> @@ -355,6 +355,16 @@ int of_irq_to_resource(struct device_node *dev, int
> index, struct resource *r) r->start = r->end = irq;
> r->flags = IORESOURCE_IRQ;
> r->name = name ? name : dev->full_name;
> +
> + /*
> + * Some drivers might rely on availability of trigger
flags
> + * in IRQ resource. Since irq_of_parse_and_map()
configures the
> + * trigger based on interrupt specifier and IRQD_TRIGGER_*
> + * flags are consistent with IORESOURCE_IRQ_*, we can get
> + * trigger type that was just set and pass it through
resource
> + * flags as well.
> + */
> + r->flags |= irqd_get_trigger_type(irq_get_irq_data(irq));
> }
>
> return irq;
Any comments on this patch?
Best regards,
Tomasz
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