On Mon, Apr 29, 2013 at 03:58:37PM +0200, Maxime Ripard wrote:
> MXS, unlike other ARM platforms,
How are other ARM platforms handling that?
> has no way to make a FIQ from an
> interrupt from a driver, without poking directly into the icoll.
>
> Add an exported function to do this.
>
> Signed-off-by: Maxime Ripard <maxime.rip...@free-electrons.com>
> ---
> arch/arm/mach-mxs/icoll.c | 11 +++++++++++
This will become drivers/irqchip/irq-mxs.c after the merge window.
Shawn
> 1 file changed, 11 insertions(+)
>
> diff --git a/arch/arm/mach-mxs/icoll.c b/arch/arm/mach-mxs/icoll.c
> index 8fb23af..1bb16da 100644
> --- a/arch/arm/mach-mxs/icoll.c
> +++ b/arch/arm/mach-mxs/icoll.c
> @@ -16,6 +16,7 @@
> * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
> */
>
> +#include <linux/export.h>
> #include <linux/kernel.h>
> #include <linux/init.h>
> #include <linux/irq.h>
> @@ -34,6 +35,7 @@
> #define HW_ICOLL_INTERRUPTn_SET(n) (0x0124 + (n) * 0x10)
> #define HW_ICOLL_INTERRUPTn_CLR(n) (0x0128 + (n) * 0x10)
> #define BM_ICOLL_INTERRUPTn_ENABLE 0x00000004
> +#define BM_ICOLL_INTERRUPTn_FIQ_ENABLE 0x00000010
> #define BV_ICOLL_LEVELACK_IRQLEVELACK__LEVEL0 0x1
>
> #define ICOLL_NUM_IRQS 128
> @@ -41,6 +43,15 @@
> static void __iomem *icoll_base = MXS_IO_ADDRESS(MXS_ICOLL_BASE_ADDR);
> static struct irq_domain *icoll_domain;
>
> +void mxs_icoll_set_irq_fiq(unsigned int irq)
> +{
> + struct irq_data *d = irq_get_irq_data(irq);
> +
> + __raw_writel(BM_ICOLL_INTERRUPTn_FIQ_ENABLE,
> + icoll_base + HW_ICOLL_INTERRUPTn_SET(d->hwirq));
> +}
> +EXPORT_SYMBOL(mxs_icoll_set_irq_fiq);
> +
> static void icoll_ack_irq(struct irq_data *d)
> {
> /*
> --
> 1.8.1.2
>
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