[PATCH 05/22] input/ti_am33x_tsc: remove unwanted fifo flush
From: Sebastian Andrzej Siewior
Date: Tue Jun 11 2013 - 07:33:42 EST
From: "Patil, Rachna" <rachna@xxxxxx>
When touchscreen and ADC are used together, this
unwanted fifo flush leads to loss of ADC data.
Signed-off-by: Patil, Rachna <rachna@xxxxxx>
Signed-off-by: Felipe Balbi <balbi@xxxxxx>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@xxxxxxxxxxxxx>
---
drivers/input/touchscreen/ti_am335x_tsc.c | 10 ----------
1 file changed, 10 deletions(-)
diff --git a/drivers/input/touchscreen/ti_am335x_tsc.c b/drivers/input/touchscreen/ti_am335x_tsc.c
index 56c6220..b2f8a46 100644
--- a/drivers/input/touchscreen/ti_am335x_tsc.c
+++ b/drivers/input/touchscreen/ti_am335x_tsc.c
@@ -252,8 +252,6 @@ static irqreturn_t titsc_irq(int irq, void *dev)
unsigned int x = 0, y = 0;
unsigned int z1, z2, z;
unsigned int fsm;
- unsigned int fifo1count, fifo0count;
- int i;
status = titsc_readl(ts_dev, REG_IRQSTATUS);
if (status & IRQENB_FIFO0THRES) {
@@ -262,14 +260,6 @@ static irqreturn_t titsc_irq(int irq, void *dev)
z1 = titsc_readl(ts_dev, REG_FIFO0) & 0xfff;
z2 = titsc_readl(ts_dev, REG_FIFO1) & 0xfff;
- fifo1count = titsc_readl(ts_dev, REG_FIFO1CNT);
- for (i = 0; i < fifo1count; i++)
- titsc_readl(ts_dev, REG_FIFO1);
-
- fifo0count = titsc_readl(ts_dev, REG_FIFO0CNT);
- for (i = 0; i < fifo0count; i++)
- titsc_readl(ts_dev, REG_FIFO0);
-
if (ts_dev->pen_down && z1 != 0 && z2 != 0) {
/*
* Calculate pressure using formula
--
1.7.10.4
--
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