From: Clinton Sprain <clintonsprain@gmail.com>
Date: Wed, 26 Mar 2014 21:10:43 +0000 (-0700)
Subject: Input: appletouch - dial back fuzz setting
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=703e148875c838c430312da592d7ab3681ab5c81;p=GitHub%2Fexynos8895%2Fandroid_kernel_samsung_universal8895.git

Input: appletouch - dial back fuzz setting

Let's dial back the default fuzz setting for most devices using this
driver, based on values from user feedback from forums and bug reports.

Signed-off-by: Clinton Sprain <clintonsprain@gmail.com>
Reviewed-by: Henrik Rydberg <rydberg@euromail.se>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
---

diff --git a/drivers/input/mouse/appletouch.c b/drivers/input/mouse/appletouch.c
index 800ca7dfafc2..2745832f74b6 100644
--- a/drivers/input/mouse/appletouch.c
+++ b/drivers/input/mouse/appletouch.c
@@ -48,6 +48,7 @@ struct atp_info {
 	int yfact;				/* Y multiplication factor */
 	int datalen;				/* size of USB transfers */
 	void (*callback)(struct urb *);		/* callback function */
+	int fuzz;				/* fuzz touchpad generates */
 };
 
 static void atp_complete_geyser_1_2(struct urb *urb);
@@ -61,6 +62,7 @@ static const struct atp_info fountain_info = {
 	.yfact		= 43,
 	.datalen	= 81,
 	.callback	= atp_complete_geyser_1_2,
+	.fuzz		= 16,
 };
 
 static const struct atp_info geyser1_info = {
@@ -71,6 +73,7 @@ static const struct atp_info geyser1_info = {
 	.yfact		= 43,
 	.datalen	= 81,
 	.callback	= atp_complete_geyser_1_2,
+	.fuzz		= 16,
 };
 
 static const struct atp_info geyser2_info = {
@@ -81,6 +84,7 @@ static const struct atp_info geyser2_info = {
 	.yfact		= 43,
 	.datalen	= 64,
 	.callback	= atp_complete_geyser_1_2,
+	.fuzz		= 0,
 };
 
 static const struct atp_info geyser3_info = {
@@ -90,6 +94,7 @@ static const struct atp_info geyser3_info = {
 	.yfact		= 64,
 	.datalen	= 64,
 	.callback	= atp_complete_geyser_3_4,
+	.fuzz		= 0,
 };
 
 static const struct atp_info geyser4_info = {
@@ -99,6 +104,7 @@ static const struct atp_info geyser4_info = {
 	.yfact		= 64,
 	.datalen	= 64,
 	.callback	= atp_complete_geyser_3_4,
+	.fuzz		= 0,
 };
 
 #define ATP_DEVICE(prod, info)					\
@@ -155,9 +161,6 @@ MODULE_DEVICE_TABLE(usb, atp_table);
 #define ATP_XSENSORS	26
 #define ATP_YSENSORS	16
 
-/* amount of fuzz this touchpad generates */
-#define ATP_FUZZ	16
-
 /* maximum pressure this driver will report */
 #define ATP_PRESSURE	300
 
@@ -455,7 +458,7 @@ static void atp_detect_size(struct atp *dev)
 			input_set_abs_params(dev->input, ABS_X, 0,
 					     (dev->info->xsensors_17 - 1) *
 							dev->info->xfact - 1,
-					     ATP_FUZZ, 0);
+					     dev->info->fuzz, 0);
 			break;
 		}
 	}
@@ -843,10 +846,10 @@ static int atp_probe(struct usb_interface *iface,
 
 	input_set_abs_params(input_dev, ABS_X, 0,
 			     (dev->info->xsensors - 1) * dev->info->xfact - 1,
-			     ATP_FUZZ, 0);
+			     dev->info->fuzz, 0);
 	input_set_abs_params(input_dev, ABS_Y, 0,
 			     (dev->info->ysensors - 1) * dev->info->yfact - 1,
-			     ATP_FUZZ, 0);
+			     dev->info->fuzz, 0);
 	input_set_abs_params(input_dev, ABS_PRESSURE, 0, ATP_PRESSURE, 0, 0);
 
 	set_bit(EV_KEY, input_dev->evbit);