From: A NAVEEN <anaveen@mistralsolutions.com>
Date: Mon, 8 Sep 2008 06:11:57 +0000 (+0530)
Subject: Patch for Touch Screen noise on OMAP3EVM.
X-Git-Tag: v2.6.27-omap1~213
X-Git-Url: http://www.pilppa.org/gitweb/gitweb.cgi?a=commitdiff_plain;h=e9e9988a4ded6acee1d5387debb39f006f4c11a3;p=linux-2.6-omap-h63xx.git

Patch for Touch Screen noise on OMAP3EVM.

When git kernel tree is used on a OMAP3EVM board file for touch screen
testing, it shows lot of jitter. With this patch the jitter can be
reduced.

Signed-off-by: Naveen Atmakuri <anaveen@mistralsolutions.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
---

diff --git a/arch/arm/mach-omap2/board-omap3evm.c b/arch/arm/mach-omap2/board-omap3evm.c
index 4963f0fad31..9a4784ead48 100644
--- a/arch/arm/mach-omap2/board-omap3evm.c
+++ b/arch/arm/mach-omap2/board-omap3evm.c
@@ -27,6 +27,8 @@
 #include <asm/mach-types.h>
 #include <asm/mach/arch.h>
 #include <asm/mach/map.h>
+#include <linux/io.h>
+#include <linux/delay.h>
 
 #include <mach/gpio.h>
 #include <mach/keypad.h>
@@ -132,8 +134,16 @@ static int ads7846_get_pendown_state(void)
 }
 
 struct ads7846_platform_data ads7846_config = {
+	.x_max                  = 0x0fff,
+	.y_max                  = 0x0fff,
+	.x_plate_ohms           = 180,
+	.pressure_max           = 255,
+	.debounce_max           = 10,
+	.debounce_tol           = 3,
+	.debounce_rep           = 1,
 	.get_pendown_state	= ads7846_get_pendown_state,
 	.keep_vref_on		= 1,
+	.settle_delay_usecs     = 150,
 };
 
 static struct omap2_mcspi_device_config ads7846_mcspi_config = {