linux-kernel - [PATCH 3/5] ARM: mvebu: Allow using the GIC for wakeup in standby mode

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Message-Id: <1427724278-12379-4-git-send-email-gregory.clement@free-electrons.com>
Date:	Mon, 30 Mar 2015 16:04:36 +0200
From:	Gregory CLEMENT <gregory.clement@...e-electrons.com>
To:	Jason Cooper <jason@...edaemon.net>, Andrew Lunn <andrew@...n.ch>,
	Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>,
	Gregory CLEMENT <gregory.clement@...e-electrons.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	linux-kernel@...r.kernel.org
Cc:	Thomas Petazzoni <thomas.petazzoni@...e-electrons.com>,
	Ezequiel Garcia <ezequiel.garcia@...e-electrons.com>,
	linux-arm-kernel@...ts.infradead.org,
	Maxime Ripard <maxime.ripard@...e-electrons.com>,
	Boris BREZILLON <boris.brezillon@...e-electrons.com>,
	Lior Amsalem <alior@...vell.com>,
	Tawfik Bayouk <tawfik@...vell.com>,
	Nadav Haklai <nadavh@...vell.com>
Subject: [PATCH 3/5] ARM: mvebu: Allow using the GIC for wakeup in standby mode

On the Armada 375/38x/39x SoCs, in standby mode the SoC stay powered
and it is possible to wake-up from any interrupt sources. This patch
adds flag to the GIC irqchip driver to let linux know this.

Signed-off-by: Gregory CLEMENT <gregory.clement@...e-electrons.com>
---
 arch/arm/mach-mvebu/board-v7.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/arch/arm/mach-mvebu/board-v7.c b/arch/arm/mach-mvebu/board-v7.c
index 89a139ed7d5b..61774279a66d 100644
--- a/arch/arm/mach-mvebu/board-v7.c
+++ b/arch/arm/mach-mvebu/board-v7.c
@@ -18,6 +18,7 @@
 #include <linux/of_address.h>
 #include <linux/of_fdt.h>
 #include <linux/of_platform.h>
+#include <linux/irq.h>
 #include <linux/io.h>
 #include <linux/clocksource.h>
 #include <linux/dma-mapping.h>
@@ -26,6 +27,7 @@
 #include <linux/signal.h>
 #include <linux/slab.h>
 #include <linux/irqchip.h>
+#include <linux/irqchip/arm-gic.h>
 #include <asm/hardware/cache-l2x0.h>
 #include <asm/mach/arch.h>
 #include <asm/mach/map.h>
@@ -129,6 +131,11 @@ static int armada_375_external_abort_wa(unsigned long addr, unsigned int fsr,
 
 static void __init mvebu_init_irq(void)
 {
+	if (of_machine_is_compatible("marvell,armada375") ||
+	    of_machine_is_compatible("marvell,armada380") ||
+	    of_machine_is_compatible("marvell,armada390"))
+		gic_set_irqchip_flags(IRQCHIP_SKIP_SET_WAKE |
+				      IRQCHIP_MASK_ON_SUSPEND);
 	irqchip_init();
 	mvebu_scu_enable();
 	coherency_init();
-- 
2.1.0

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