So far, the DT parsing code was only setting up the regular input axes,
completely ignoring their multitouch counter parts.
Fill them with the same parameters than the regular axes.
Signed-off-by: Maxime Ripard <maxime.ripard@xxxxxxxxxxxxxxxxxx>
---
drivers/input/touchscreen/of_touchscreen.c | 22 +++++++++++++++++-----
1 file changed, 17 insertions(+), 5 deletions(-)
diff --git a/drivers/input/touchscreen/of_touchscreen.c b/drivers/input/touchscreen/of_touchscreen.c
index fe80d8ba7efa..b82b5207c78b 100644
--- a/drivers/input/touchscreen/of_touchscreen.c
+++ b/drivers/input/touchscreen/of_touchscreen.c
@@ -11,6 +11,7 @@
#include <linux/of.h>
#include <linux/input.h>
+#include <linux/input/mt.h>
#include <linux/input/touchscreen.h>
static u32 of_get_optional_u32(struct device_node *np,
@@ -30,8 +31,13 @@ static void touchscreen_set_params(struct input_dev *dev,
struct input_absinfo *absinfo;
if (!test_bit(axis, dev->absbit)) {
- dev_warn(&dev->dev,
- "DT specifies parameters but the axis is not set up\n");
+ /*
+ * Emit a warning only if the axis is not a multitouch
+ * axis, which might not be set by the driver.
+ */
+ if (!input_is_mt_axis(axis))
+ dev_warn(&dev->dev,
+ "DT specifies parameters but the axis is not set up\n");
return;
}
@@ -59,17 +65,23 @@ void touchscreen_parse_of_params(struct input_dev *dev)
maximum = of_get_optional_u32(np, "touchscreen-size-x");
fuzz = of_get_optional_u32(np, "touchscreen-fuzz-x");
- if (maximum || fuzz)
+ if (maximum || fuzz) {
touchscreen_set_params(dev, ABS_X, maximum, fuzz);
+ touchscreen_set_params(dev, ABS_MT_POSITION_X, maximum, fuzz);
+ }
maximum = of_get_optional_u32(np, "touchscreen-size-y");
fuzz = of_get_optional_u32(np, "touchscreen-fuzz-y");
- if (maximum || fuzz)
+ if (maximum || fuzz) {
touchscreen_set_params(dev, ABS_Y, maximum, fuzz);
+ touchscreen_set_params(dev, ABS_MT_POSITION_Y, maximum, fuzz);
+ }
maximum = of_get_optional_u32(np, "touchscreen-max-pressure");
fuzz = of_get_optional_u32(np, "touchscreen-fuzz-pressure");
- if (maximum || fuzz)
+ if (maximum || fuzz) {
touchscreen_set_params(dev, ABS_PRESSURE, maximum, fuzz);
+ touchscreen_set_params(dev, ABS_MT_PRESSURE, maximum, fuzz);
+ }
}
EXPORT_SYMBOL(touchscreen_parse_of_params);
--
2.1.1
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