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Commit 3b7474ec authored by Dave Gerlach's avatar Dave Gerlach Committed by Dmitry Torokhov
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Input: ti_am335x_tsc - fix HWPEN interrupt handling 



Remove write to REG_IRQCLR and REG_IRQWAKEUP in interrupt handler for
IRQENB_HW_PEN as the resume handler should and does clear REG_IRQWAKEUP.
IRQENB_HW_PEN bit is set in irqclr so that all interrupts get cleared
later so let IRQENB_HW_PEN be cleared by that.

Without this patch wakeup events from TSC_ADC do not work because pending
interrupts in TSC_ADC were causing HW_PEN interrupt, needed for wake from
suspend modes, to get disabled immediately by IRQ handler after being
enabled and preventing wake from happening.

Signed-off-by: default avatarDave Gerlach <d-gerlach@ti.com>
Signed-off-by: default avatarDmitry Torokhov <dmitry.torokhov@gmail.com>
parent 7ae6cfe8

drivers/input/touchscreen/ti_am335x_tsc.c

+0 −2
Original line number Diff line number Diff line
@@ -273,8 +273,6 @@ static irqreturn_t titsc_irq(int irq, void *dev) 
	status = titsc_readl(ts_dev, REG_RAWIRQSTATUS);

	if (status & IRQENB_HW_PEN) {

		ts_dev->pen_down = true;

		titsc_writel(ts_dev, REG_IRQWAKEUP, 0x00);

		titsc_writel(ts_dev, REG_IRQCLR, IRQENB_HW_PEN);

		irqclr |= IRQENB_HW_PEN;

	}