i.MX: Add FIQ support

Drivers which are going to use it will have to select it and use
imx_set_irq_fiq() to set FIQ mode for this interrupt.

Changes since V1:
- removed '#ifdef CONFIG_FIQ' from irqs.h
- renamed imx_set_irq_type() to imx_set_irq_fiq()
- made irqt unsigned
- fixed irq number check

Signed-off-by: Paulius Zaleckas <paulius.zaleckas@teltonika.lt>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

1 files changed, 5 insertions, 0 deletions

diff --git a/arch/arm/mach-imx/include/mach/irqs.h b/arch/arm/mach-imx/include/mach/irqs.h
index eb8d5bd05d56..67812c5ac1f9 100644
--- a/arch/arm/mach-imx/include/mach/irqs.h
+++ b/arch/arm/mach-imx/include/mach/irqs.h
@@ -111,6 +111,11 @@
 /* decode irq number to use with IMR(x), ISR(x) and friends */
 #define IRQ_TO_REG(irq) ((irq - IMX_IRQS) >> 5)
 
+/* all normal IRQs can be FIQs */
+#define FIQ_START       0
+/* switch betwean IRQ and FIQ */
+extern int imx_set_irq_fiq(unsigned int irq, unsigned int type);
+
 #define NR_IRQS (IRQ_GPIOD(32) + 1)
 #define IRQ_GPIO(x)
 #endif