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Input: of_touchscreen - fix setting max values on X/Y axis 

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.

Reviewed-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
This commit is contained in:
Dmitry Torokhov 2015-07-06 14:57:54 -07:00
parent f61fd21dea
commit 517178692c
1 changed files with 6 additions and 4 deletions
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10
drivers/input/touchscreen/of_touchscreen.c
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@ -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",