diff mbox

[v1,08/10] Input: atmel_mxt_ts - don't report zero pressure from T9

Message ID 20180720215122.23558-8-nick@shmanahar.org (mailing list archive)
State Accepted
Headers show

Commit Message

Nick Dyer July 20, 2018, 9:51 p.m. UTC 
From: Nick Dyer <nick.dyer@itdev.co.uk>

If T9.CTRL DISAMP is set, then pressure is reported as zero. This means
some app layers (eg tslib) will ignore the contact.

Signed-off-by: Nick Dyer <nick.dyer@itdev.co.uk>
---
 drivers/input/touchscreen/atmel_mxt_ts.c | 4 ++++
 1 file changed, 4 insertions(+)
diff mbox

Patch

diff --git a/drivers/input/touchscreen/atmel_mxt_ts.c b/drivers/input/touchscreen/atmel_mxt_ts.c
index 2d1fddafb7f9..d7023d261458 100644
--- a/drivers/input/touchscreen/atmel_mxt_ts.c
+++ b/drivers/input/touchscreen/atmel_mxt_ts.c
@@ -843,6 +843,10 @@  static void mxt_proc_t9_message(struct mxt_data *data, u8 *message)
 			mxt_input_sync(data);
 		}
 
+		/* if active, pressure must be non-zero */
+		if (!amplitude)
+			amplitude = MXT_PRESSURE_DEFAULT;
+
 		/* Touch active */
 		input_mt_report_slot_state(input_dev, MT_TOOL_FINGER, 1);
 		input_report_abs(input_dev, ABS_MT_POSITION_X, x);