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[1/4] input: ti_am335x_tsc: correct step mask update after IRQ

Message ID 1376424303-22740-2-git-send-email-zubair.lutfullah@gmail.com (mailing list archive)
State New, archived
Headers show

Commit Message

Zubair Lutfullah Aug. 13, 2013, 8:05 p.m. UTC 
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(-)
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Patch

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;