lkml.org 
[lkml]   [2015]   [Jul]   [6]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 2/3] Input: of_touchscreen - fix setting max values on X/Y axis
Date
The binding specification says that "touchscreen-size-x" and "-y" specify
horizontal and vertical resolution of the touchscreen and therefore maximum
absolute coordinates should be reduced by 1 since we are starting with 0.

Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
---
drivers/input/touchscreen/of_touchscreen.c | 10 ++++++----
1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/drivers/input/touchscreen/of_touchscreen.c b/drivers/input/touchscreen/of_touchscreen.c
index 759cf4b..50bc0f2 100644
--- a/drivers/input/touchscreen/of_touchscreen.c
+++ b/drivers/input/touchscreen/of_touchscreen.c
@@ -71,23 +71,25 @@ void touchscreen_parse_of_params(struct input_dev *dev, bool multitouch)

axis = multitouch ? ABS_MT_POSITION_X : ABS_X;
data_present = touchscreen_get_prop_u32(np, "touchscreen-size-x",
- input_abs_get_max(dev, axis),
+ input_abs_get_max(dev,
+ axis) + 1,
&maximum) |
touchscreen_get_prop_u32(np, "touchscreen-fuzz-x",
input_abs_get_fuzz(dev, axis),
&fuzz);
if (data_present)
- touchscreen_set_params(dev, axis, maximum, fuzz);
+ touchscreen_set_params(dev, axis, maximum - 1, fuzz);

axis = multitouch ? ABS_MT_POSITION_Y : ABS_Y;
data_present = touchscreen_get_prop_u32(np, "touchscreen-size-y",
- input_abs_get_max(dev, axis),
+ input_abs_get_max(dev,
+ axis) + 1,
&maximum) |
touchscreen_get_prop_u32(np, "touchscreen-fuzz-y",
input_abs_get_fuzz(dev, axis),
&fuzz);
if (data_present)
- touchscreen_set_params(dev, axis, maximum, fuzz);
+ touchscreen_set_params(dev, axis, maximum - 1, fuzz);

axis = multitouch ? ABS_MT_PRESSURE : ABS_PRESSURE;
data_present = touchscreen_get_prop_u32(np, "touchscreen-max-pressure",
--
2.4.3.573.g4eafbef


\
 
 \ /
  Last update: 2015-07-07 02:41    [W:0.982 / U:0.696 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site