forked from beagleboard/kernel
/
0003-input-touchscreen-ti_tsc-remove-unwanted-fifo-flush.patch
44 lines (38 loc) · 1.46 KB
/
0003-input-touchscreen-ti_tsc-remove-unwanted-fifo-flush.patch
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From 7f5c7aa225523c991821d002dbdcc1afaf7861d3 Mon Sep 17 00:00:00 2001
From: "Patil, Rachna" <rachna@ti.com>
Date: Thu, 24 Jan 2013 03:45:07 +0000
Subject: [PATCH 03/16] input: touchscreen: ti_tsc: remove unwanted fifo flush
When touchscreen and ADC are used together, this
unwanted fifo flush leads to loss of ADC data.
Signed-off-by: Patil, Rachna <rachna@ti.com>
---
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 0c460f9..064d2b2 100644
--- a/drivers/input/touchscreen/ti_am335x_tsc.c
+++ b/drivers/input/touchscreen/ti_am335x_tsc.c
@@ -308,8 +308,6 @@ 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) {
@@ -318,14 +316,6 @@ 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
--
1.8.1.4