summaryrefslogtreecommitdiffstats
path: root/drivers/mfd
diff options
context:
space:
mode:
authorDaniel Lezcano <daniel.lezcano@linaro.org>2012-02-28 22:46:08 +0100
committerSamuel Ortiz <sameo@linux.intel.com>2012-03-06 18:46:56 +0100
commit9ab492e12d588af7b05892c3744e8bdc2eace6d0 (patch)
tree7b79c2d3c840239f5b0a4e717227c8adf51c69cc /drivers/mfd
parent9f60d33e1811e0aa696a3152050d6e3e4c3195aa (diff)
downloadlinux-9ab492e12d588af7b05892c3744e8bdc2eace6d0.tar.gz
linux-9ab492e12d588af7b05892c3744e8bdc2eace6d0.tar.bz2
linux-9ab492e12d588af7b05892c3744e8bdc2eace6d0.zip
mfd : Check if the db8500 prcmu has pending irq
This patch allows to check if there are some pending irqs on the prcmu. Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Diffstat (limited to 'drivers/mfd')
-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 97341aa4025c..4e27db841fab 100644
--- a/drivers/mfd/db8500-prcmu.c
+++ b/drivers/mfd/db8500-prcmu.c
@@ -884,6 +884,26 @@ bool db8500_prcmu_gic_pending_irq(void)
}
/*
+ * This function checks if there are pending interrupt on the
+ * prcmu which has been delegated to monitor the irqs with the
+ * db8500_prcmu_copy_gic_settings function.
+ */
+bool db8500_prcmu_pending_irq(void)
+{
+ u32 it, im;
+ int i;
+
+ for (i = 0; i < PRCMU_GIC_NUMBER_REGS - 1; i++) {
+ it = readl(PRCM_ARMITVAL31TO0 + i * 4);
+ im = readl(PRCM_ARMITMSK31TO0 + i * 4);
+ if (it & im)
+ return true; /* There is a pending interrupt */
+ }
+
+ 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.
*/