linux-kernel - [PATCH 2/3] input/touchscreen: imagis: Correct the maximum touch area value

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Date:   Thu, 17 Nov 2022 16:35:08 +0000
From:   "Lin, Meng-Bo" <linmengbo0689@...tonmail.com>
To:     linux-kernel@...r.kernel.org
Cc:     Markuss Broks <markuss.broks@...il.com>,
        Dmitry Torokhov <dmitry.torokhov@...il.com>,
        Henrik Rydberg <rydberg@...math.org>,
        "open list:INPUT (KEYBOARD, MOUSE, JOYSTICK, TOUCHSCREEN)..." 
        <linux-input@...r.kernel.org>
Subject: [PATCH 2/3] input/touchscreen: imagis: Correct the maximum touch area value

From: Markuss Broks <markuss.broks@...il.com>

As specified in downstream IST3038/IST30XXB driver and proved by testing,
the correct maximum reported value of touch area is 16.

Signed-off-by: Markuss Broks <markuss.broks@...il.com>
[Change from IST3038B to IST3038 and IST30XXB]
Signed-off-by: Lin, Meng-Bo <linmengbo0689@...tonmail.com>
---
 drivers/input/touchscreen/imagis.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/input/touchscreen/imagis.c b/drivers/input/touchscreen/imagis.c
index e2697e6c6d2a..b667914a44f1 100644
--- 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) {
-- 
2.30.2