[PATCH 18/21] input: ti_am335x_tsc: ACK the HW_PEN irq in ISR
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: 2013-06-12 17:12:47
Also in:
linux-iio, linux-omap, lkml
Subsystem:
input (keyboard, mouse, joystick, touchscreen) drivers, the rest · Maintainers:
Dmitry Torokhov, Linus Torvalds
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> --- 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); am335x_tsc_se_update(ts_dev->mfd_tscadc);
--
1.7.10.4