* [PATCH] input: touchscreen: ti_am335x_tsc: Fix HWPEN interrupt handling
@ 2015-09-15 16:28 Dave Gerlach
2016-01-07 19:14 ` Dmitry Torokhov
0 siblings, 1 reply; 2+ messages in thread
From: Dave Gerlach @ 2015-09-15 16:28 UTC (permalink / raw)
To: linux-input, linux-omap
Cc: Dmitry Torokhov, Vignesh R, Sekhar Nori, Dave Gerlach
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: Dave Gerlach <d-gerlach@ti.com>
---
drivers/input/touchscreen/ti_am335x_tsc.c | 2 --
1 file changed, 2 deletions(-)
diff --git a/drivers/input/touchscreen/ti_am335x_tsc.c b/drivers/input/touchscreen/ti_am335x_tsc.c
index 191a1b8..a21a07c 100644
--- a/drivers/input/touchscreen/ti_am335x_tsc.c
+++ b/drivers/input/touchscreen/ti_am335x_tsc.c
@@ -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;
}
--
2.4.6
^ permalink raw reply related [flat|nested] 2+ messages in thread* Re: [PATCH] input: touchscreen: ti_am335x_tsc: Fix HWPEN interrupt handling
2015-09-15 16:28 [PATCH] input: touchscreen: ti_am335x_tsc: Fix HWPEN interrupt handling Dave Gerlach
@ 2016-01-07 19:14 ` Dmitry Torokhov
0 siblings, 0 replies; 2+ messages in thread
From: Dmitry Torokhov @ 2016-01-07 19:14 UTC (permalink / raw)
To: Dave Gerlach; +Cc: linux-input, linux-omap, Vignesh R, Sekhar Nori
On Tue, Sep 15, 2015 at 11:28:09AM -0500, Dave Gerlach wrote:
> 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: Dave Gerlach <d-gerlach@ti.com>
Applied, thank you.
> ---
> drivers/input/touchscreen/ti_am335x_tsc.c | 2 --
> 1 file changed, 2 deletions(-)
>
> diff --git a/drivers/input/touchscreen/ti_am335x_tsc.c b/drivers/input/touchscreen/ti_am335x_tsc.c
> index 191a1b8..a21a07c 100644
> --- a/drivers/input/touchscreen/ti_am335x_tsc.c
> +++ b/drivers/input/touchscreen/ti_am335x_tsc.c
> @@ -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;
> }
>
> --
> 2.4.6
>
--
Dmitry
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