[PATCH 18/21] input: ti_am335x_tsc: ACK the HW_PEN irq in ISR

From: Sebastian Andrzej Siewior
Date: Wed Jun 12 2013 - 13:12:52 EST

The interrupt source IRQENB_HW_PEN is enabled in suspend and suposed to
be used as a wake up source. Once this interrupt source is unmaksed, the
devices ends up in ISR and never continues.
This change ACKs the interrupt and disables it so the system does not

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@xxxxxxxxxxxxx>
drivers/input/touchscreen/ti_am335x_tsc.c | 6 ++++++
1 file changed, 6 insertions(+)

diff --git a/drivers/input/touchscreen/ti_am335x_tsc.c b/drivers/input/touchscreen/ti_am335x_tsc.c
index 1bceb25..2ba7703 100644
--- a/drivers/input/touchscreen/ti_am335x_tsc.c
+++ b/drivers/input/touchscreen/ti_am335x_tsc.c
@@ -308,6 +308,12 @@ static irqreturn_t titsc_irq(int irq, void *dev)
irqclr |= IRQENB_PENUP;

+ if (status & IRQENB_HW_PEN) {
+ titsc_writel(ts_dev, REG_IRQWAKEUP, 0x00);
+ titsc_writel(ts_dev, REG_IRQCLR, IRQENB_HW_PEN);
+ }
titsc_writel(ts_dev, REG_IRQSTATUS, irqclr);


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