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authorDaniel Lezcano <daniel.lezcano@linaro.org>2012-02-28 22:46:07 +0100
committerSamuel Ortiz <sameo@linux.intel.com>2012-03-06 18:46:55 +0100
commit9f60d33e1811e0aa696a3152050d6e3e4c3195aa (patch)
tree7cf702dca14b1be0e310b6c45d2c71b32bce2aa2 /drivers
parentcc9a0f68d1f8b9bfd9c0c2ada13db64d63f63db3 (diff)
downloadop-kernel-dev-9f60d33e1811e0aa696a3152050d6e3e4c3195aa.zip
op-kernel-dev-9f60d33e1811e0aa696a3152050d6e3e4c3195aa.tar.gz
mfd : Copy the db8500 gic setting to the prcmu
In the case we go to the retention mode, we decoupled the gic in order to have the A9 core to reach a stable WFI state. But we want the prcmu to wake up the A9 when the gic has a pending irq which is done by copying the gic settings to the to the prcmu. Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/mfd/db8500-prcmu.c20
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/mfd/db8500-prcmu.c b/drivers/mfd/db8500-prcmu.c
index 8346a0e..97341aa 100644
--- a/drivers/mfd/db8500-prcmu.c
+++ b/drivers/mfd/db8500-prcmu.c
@@ -883,6 +883,26 @@ bool db8500_prcmu_gic_pending_irq(void)
return false;
}
+/*
+ * This function copies the gic SPI settings to the prcmu in order to
+ * monitor them and abort/finish the retention/off sequence or state.
+ */
+int db8500_prcmu_copy_gic_settings(void)
+{
+ u32 er; /* Enable register */
+ void __iomem *dist_base = __io_address(U8500_GIC_DIST_BASE);
+ int i;
+
+ /* We skip the STI and PPI */
+ for (i = 0; i < PRCMU_GIC_NUMBER_REGS - 1; i++) {
+ er = readl_relaxed(dist_base +
+ GIC_DIST_ENABLE_SET + (i + 1) * 4);
+ writel(er, PRCM_ARMITMSK31TO0 + i * 4);
+ }
+
+ return 0;
+}
+
/* This function should only be called while mb0_transfer.lock is held. */
static void config_wakeups(void)
{
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