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authorSebastian Andrzej Siewior <bigeasy@linutronix.de>2013-06-05 18:23:18 +0400
committerSebastian Andrzej Siewior <bigeasy@linutronix.de>2013-06-12 20:50:22 +0400
commit00789e5deb0af08826bd0c602d21baa9016b54b5 (patch)
tree1f768996143ba0054dac1df240ffca5a24bc6dd7 /drivers/input
parent8c896308feae7fb2e8da4ae4c09fe2d2ca18ad7b (diff)
downloadlinux-00789e5deb0af08826bd0c602d21baa9016b54b5.tar.xz
input: ti_am335x_tsc: ACK the HW_PEN irq in ISR
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 freeze. Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Diffstat (limited to 'drivers/input')
-rw-r--r--drivers/input/touchscreen/ti_am335x_tsc.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/input/touchscreen/ti_am335x_tsc.c b/drivers/input/touchscreen/ti_am335x_tsc.c
index 1bceb2591fc7..2ba77039ab91 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);
am335x_tsc_se_update(ts_dev->mfd_tscadc);