Input: of_touchscreen - explicitly choose axis
The 'axis + 1' calculation is implicit and potentially error prone.
Moreover, few lines before the axis is set explicitly for both X and Y.
Do the same when retrieving different properties for X and Y.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20200303180917.12563-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
diff --git a/drivers/input/touchscreen/of_touchscreen.c b/drivers/input/touchscreen/of_touchscreen.c
index e16ec4c..97342e1 100644
--- a/drivers/input/touchscreen/of_touchscreen.c
+++ b/drivers/input/touchscreen/of_touchscreen.c
@@ -66,7 +66,7 @@ void touchscreen_parse_properties(struct input_dev *input, bool multitouch,
{
struct device *dev = input->dev.parent;
struct input_absinfo *absinfo;
- unsigned int axis;
+ unsigned int axis, axis_x, axis_y;
unsigned int minimum, maximum, fuzz;
bool data_present;
@@ -74,33 +74,34 @@ void touchscreen_parse_properties(struct input_dev *input, bool multitouch,
if (!input->absinfo)
return;
- axis = multitouch ? ABS_MT_POSITION_X : ABS_X;
+ axis_x = multitouch ? ABS_MT_POSITION_X : ABS_X;
+ axis_y = multitouch ? ABS_MT_POSITION_Y : ABS_Y;
+
data_present = touchscreen_get_prop_u32(dev, "touchscreen-min-x",
- input_abs_get_min(input, axis),
+ input_abs_get_min(input, axis_x),
&minimum) |
touchscreen_get_prop_u32(dev, "touchscreen-size-x",
input_abs_get_max(input,
- axis) + 1,
+ axis_x) + 1,
&maximum) |
touchscreen_get_prop_u32(dev, "touchscreen-fuzz-x",
- input_abs_get_fuzz(input, axis),
+ input_abs_get_fuzz(input, axis_x),
&fuzz);
if (data_present)
- touchscreen_set_params(input, axis, minimum, maximum - 1, fuzz);
+ touchscreen_set_params(input, axis_x, minimum, maximum - 1, fuzz);
- axis = multitouch ? ABS_MT_POSITION_Y : ABS_Y;
data_present = touchscreen_get_prop_u32(dev, "touchscreen-min-y",
- input_abs_get_min(input, axis),
+ input_abs_get_min(input, axis_y),
&minimum) |
touchscreen_get_prop_u32(dev, "touchscreen-size-y",
input_abs_get_max(input,
- axis) + 1,
+ axis_y) + 1,
&maximum) |
touchscreen_get_prop_u32(dev, "touchscreen-fuzz-y",
- input_abs_get_fuzz(input, axis),
+ input_abs_get_fuzz(input, axis_y),
&fuzz);
if (data_present)
- touchscreen_set_params(input, axis, minimum, maximum - 1, fuzz);
+ touchscreen_set_params(input, axis_y, minimum, maximum - 1, fuzz);
axis = multitouch ? ABS_MT_PRESSURE : ABS_PRESSURE;
data_present = touchscreen_get_prop_u32(dev,
@@ -117,15 +118,13 @@ void touchscreen_parse_properties(struct input_dev *input, bool multitouch,
if (!prop)
return;
- axis = multitouch ? ABS_MT_POSITION_X : ABS_X;
-
- prop->max_x = input_abs_get_max(input, axis);
- prop->max_y = input_abs_get_max(input, axis + 1);
+ prop->max_x = input_abs_get_max(input, axis_x);
+ prop->max_y = input_abs_get_max(input, axis_y);
prop->invert_x =
device_property_read_bool(dev, "touchscreen-inverted-x");
if (prop->invert_x) {
- absinfo = &input->absinfo[axis];
+ absinfo = &input->absinfo[axis_x];
absinfo->maximum -= absinfo->minimum;
absinfo->minimum = 0;
}
@@ -133,7 +132,7 @@ void touchscreen_parse_properties(struct input_dev *input, bool multitouch,
prop->invert_y =
device_property_read_bool(dev, "touchscreen-inverted-y");
if (prop->invert_y) {
- absinfo = &input->absinfo[axis + 1];
+ absinfo = &input->absinfo[axis_y];
absinfo->maximum -= absinfo->minimum;
absinfo->minimum = 0;
}
@@ -141,7 +140,7 @@ void touchscreen_parse_properties(struct input_dev *input, bool multitouch,
prop->swap_x_y =
device_property_read_bool(dev, "touchscreen-swapped-x-y");
if (prop->swap_x_y)
- swap(input->absinfo[axis], input->absinfo[axis + 1]);
+ swap(input->absinfo[axis_x], input->absinfo[axis_y]);
}
EXPORT_SYMBOL(touchscreen_parse_properties);
