input/touchscreen: imagis: Correct the maximum touch area value

[ Upstream commit 54a62ed17a705ef1ac80ebca2b62136b19243e19 ]

As specified in downstream IST3038B driver and proved by testing,
the correct maximum reported value of touch area is 16.

Signed-off-by: Markuss Broks <markuss.broks@gmail.com>
Signed-off-by: Karel Balej <balejk@matfyz.cz>
Link: https://lore.kernel.org/r/20240301164659.13240-2-karelb@gimli.ms.mff.cuni.cz
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/input/touchscreen/imagis.c b/drivers/input/touchscreen/imagis.c
index 07111ca2445561702980070c2afe0655919bd808..e67fd3011027816b77950b4d6e0cbd7fb0cca8ac 100644 (file)
--- a/drivers/input/touchscreen/imagis.c
+++ b/drivers/input/touchscreen/imagis.c
@@ -210,7 +210,7 @@ static int imagis_init_input_dev(struct imagis_ts *ts)
 
        input_set_capability(input_dev, EV_ABS, ABS_MT_POSITION_X);
        input_set_capability(input_dev, EV_ABS, ABS_MT_POSITION_Y);
-       input_set_abs_params(input_dev, ABS_MT_TOUCH_MAJOR, 0, 255, 0, 0);
+       input_set_abs_params(input_dev, ABS_MT_TOUCH_MAJOR, 0, 16, 0, 0);
 
        touchscreen_parse_properties(input_dev, true, &ts->prop);
        if (!ts->prop.max_x || !ts->prop.max_y) {