Messages in this thread | | | Date | Tue, 7 Jul 2015 12:05:39 +0200 | Subject | Re: [PATCH 4.2-rc1 v21 3/6] irqchip: gic: Introduce plumbing for IPI FIQ | From | Holger Schurig <> |
| |
> Currently it is not possible to exploit FIQ for systems with a GIC, even > on systems are otherwise capable of it. This patch makes it possible > for IPIs to be delivered using FIQ.
I wonder if gic_set_group_irq() can easily be married with mxc_set_irq_fiq().
The driver sound/soc/fsl/imx-pcm-fiq.c uses mxc_set_irq_fiq() to connect an (assembly) FIQ handler with a hardware IRQ. However, the underlying implementation of mxc_set_irq_fiq() is only supported for TZIC and AVIC (see arch/arm/mach-imx/irq-common.c).
On my i.MX6, which doesn't have an AVIC/TZIC but a GIC I could use a method to turn a normal IRQ into a FIQ :-)
| |