arm: zynq: Set proper GIC flags

Zynq is able to wake up on any IRQ, so flag it with
IRQCHIP_SKIP_SET_WAKE, and we want to mask off the IRQs when
going to suspend to avoid transient effects so also flag
this with IRQCHIP_MASK_ON_SUSPEND.

This is essentially, making the same changes as commit
'ARM: ux500: set proper GIC flags'
(sha1: 7e1f97ea8ffa66679252520dbbbd6ec413ecae68) for Zynq.

Signed-off-by: Soren Brinkmann <soren.brinkmann@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>

1 files changed, 9 insertions, 0 deletions

diff --git a/arch/arm/mach-zynq/common.c b/arch/arm/mach-zynq/common.c
index b7b39294c225..1db2a5ca9ab8 100644
--- a/arch/arm/mach-zynq/common.c
+++ b/arch/arm/mach-zynq/common.c
@@ -25,6 +25,8 @@
 #include <linux/of_irq.h>
 #include <linux/of_platform.h>
 #include <linux/of.h>
+#include <linux/irqchip.h>
+#include <linux/irqchip/arm-gic.h>
 
 #include <asm/mach/arch.h>
 #include <asm/mach/map.h>
@@ -92,6 +94,12 @@ static void __init zynq_map_io(void)
         zynq_scu_map_io();
 }
 
+static void __init zynq_irq_init(void)
+{
+        gic_arch_extn.flags = IRQCHIP_SKIP_SET_WAKE | IRQCHIP_MASK_ON_SUSPEND;
+        irqchip_init();
+}
+
 static void zynq_system_reset(enum reboot_mode mode, const char *cmd)
 {
         zynq_slcr_system_reset();
@@ -105,6 +113,7 @@ static const char * const zynq_dt_match[] = {
 DT_MACHINE_START(XILINX_EP107, "Xilinx Zynq Platform")
         .smp            = smp_ops(zynq_smp_ops),
         .map_io         = zynq_map_io,
+        .init_irq       = zynq_irq_init,
         .init_machine   = zynq_init_machine,
         .init_time      = zynq_timer_init,
         .dt_compat      = zynq_dt_match,