linux-kernel - [PATCH] Input: /input/input-mt.c Emit BTN_TOO_FINGER in function input_mt_report_pointer_emulation if touchpad meets hover condition Signed-off-by: KT Liao <kt.liao@....com.tw>

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Message-Id: <1464493153-2509-1-git-send-email-kt.liao@emc.com.tw>
Date:	Sun, 29 May 2016 11:39:12 +0800
From:	KT Liao <ktalex.liao@...il.com>
To:	linux-kernel@...r.kernel.org, linux-input@...r.kernel.org,
	dmitry.torokhov@...il.com
Cc:	phoenix@....com.tw, kt.liao@....com.tw, jeff.chung@....com.tw,
	charliemooney@...gle.com
Subject: [PATCH] Input: /input/input-mt.c Emit BTN_TOO_FINGER in function input_mt_report_pointer_emulation if touchpad meets hover condition Signed-off-by: KT Liao <kt.liao@....com.tw>

---
 drivers/input/input-mt.c | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/drivers/input/input-mt.c b/drivers/input/input-mt.c
index 54fce56..b89aaa7 100644
--- a/drivers/input/input-mt.c
+++ b/drivers/input/input-mt.c
@@ -218,8 +218,17 @@ void input_mt_report_pointer_emulation(struct input_dev *dev, bool use_count)
 	}
 
 	input_event(dev, EV_KEY, BTN_TOUCH, count > 0);
-	if (use_count)
+
+	if (use_count) {
+		if (count == 0 &&
+		    !test_bit(ABS_MT_DISTANCE, dev->absbit) &&
+		    test_bit(ABS_DISTANCE, dev->absbit) &&
+		    input_abs_get_val(dev, ABS_DISTANCE) != 0) {
+			count = 1;
+		}
 		input_mt_report_finger_count(dev, count);
+	}
+
 
 	if (oldest) {
 		int x = input_mt_get_value(oldest, ABS_MT_POSITION_X);
-- 
2.7.4