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authorOlof Johansson <olof@lixom.net>2013-02-05 12:46:11 -0800
committerOlof Johansson <olof@lixom.net>2013-02-05 12:46:18 -0800
commitc8bfea3636215e50b519e6fdb29f1bf776b0f166 (patch)
treeb580cc2463e3adefaf761af46e95146979887c58 /arch/arm/mach-tegra/irq.c
parentceca718f21270dcd7cdf7e124f15b35cb68eca13 (diff)
parent1d328606c66b9bb1c0552f585943d596f37ae3b9 (diff)
Merge tag 'tegra-for-3.9-soc-cpuidle' of git://git.kernel.org/pub/scm/linux/kernel/git/swarren/linux-tegra into next/soc
From Stephen Warren: ARM: tegra: cpuidle enhancements This pull request implements a new "LP2" cpuidle state for Tegra20, which makes use of the couple cpuidle feature. It is based on (most of) the previous pull request, with tag tegra-for-3.9-soc-usb. * tag 'tegra-for-3.9-soc-cpuidle' of git://git.kernel.org/pub/scm/linux/kernel/git/swarren/linux-tegra: ARM: tegra20: cpuidle: apply coupled cpuidle for powered-down mode ARM: tegra20: flowctrl: add support for cpu_suspend_enter/exit clk: tegra20: Implementing CPU low-power function for tegra_cpu_car_ops ARM: tegra20: cpuidle: add powered-down state for secondary CPU ARM: tegra: add pending SGI checking API Signed-off-by: Olof Johansson <olof@lixom.net>
Diffstat (limited to 'arch/arm/mach-tegra/irq.c')
-rw-r--r--arch/arm/mach-tegra/irq.c15
1 files changed, 15 insertions, 0 deletions
diff --git a/arch/arm/mach-tegra/irq.c b/arch/arm/mach-tegra/irq.c
index 2ff2128cb9d..1952e82797c 100644
--- a/arch/arm/mach-tegra/irq.c
+++ b/arch/arm/mach-tegra/irq.c
@@ -44,6 +44,8 @@
#define FIRST_LEGACY_IRQ 32
+#define SGI_MASK 0xFFFF
+
static int num_ictlrs;
static void __iomem *ictlr_reg_base[] = {
@@ -54,6 +56,19 @@ static void __iomem *ictlr_reg_base[] = {
IO_ADDRESS(TEGRA_QUINARY_ICTLR_BASE),
};
+bool tegra_pending_sgi(void)
+{
+ u32 pending_set;
+ void __iomem *distbase = IO_ADDRESS(TEGRA_ARM_INT_DIST_BASE);
+
+ pending_set = readl_relaxed(distbase + GIC_DIST_PENDING_SET);
+
+ if (pending_set & SGI_MASK)
+ return true;
+
+ return false;
+}
+
static inline void tegra_irq_write_mask(unsigned int irq, unsigned long reg)
{
void __iomem *base;