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Subject[PATCH 1/4] input: ti am335x tsc: correct step mask update after IRQ
Date
TSC steps should be enabled again after IRQ routine.
This fix ensures they are updated correctly every time.

Signed-off-by: Zubair Lutfullah <zubair.lutfullah@gmail.com>
---
drivers/input/touchscreen/ti_am335x_tsc.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/input/touchscreen/ti_am335x_tsc.c b/drivers/input/touchscreen/ti_am335x_tsc.c
index e1c5300..e165fcb 100644
--- a/drivers/input/touchscreen/ti_am335x_tsc.c
+++ b/drivers/input/touchscreen/ti_am335x_tsc.c
@@ -52,6 +52,7 @@ struct titsc {
u32 config_inp[4];
u32 bit_xp, bit_xn, bit_yp, bit_yn;
u32 inp_xp, inp_xn, inp_yp, inp_yn;
+ u32 step_mask;
};

static unsigned int titsc_readl(struct titsc *ts, unsigned int reg)
@@ -196,7 +197,8 @@ static void titsc_step_config(struct titsc *ts_dev)

/* The steps1 … end and bit 0 for TS_Charge */
stepenable = (1 << (end_step + 2)) - 1;
- am335x_tsc_se_set(ts_dev->mfd_tscadc, stepenable);
+ ts_dev->step_mask = stepenable;
+ am335x_tsc_se_set(ts_dev->mfd_tscadc, ts_dev->step_mask);
}

static void titsc_read_coordinates(struct titsc *ts_dev,
@@ -316,7 +318,7 @@ static irqreturn_t titsc_irq(int irq, void *dev)

if (irqclr) {
titsc_writel(ts_dev, REG_IRQSTATUS, irqclr);
- am335x_tsc_se_update(ts_dev->mfd_tscadc);
+ am335x_tsc_se_set(ts_dev->mfd_tscadc, ts_dev->step_mask);
return IRQ_HANDLED;
}
return IRQ_NONE;
--
1.7.9.5
--
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