[PATCH v1 08/10] Input: atmel_mxt_ts - don't report zero pressure from T9
From: Nick Dyer <nick@shmanahar.org>
Date: 2018-07-20 21:52:15
Also in:
lkml
Subsystem:
atmel maxtouch driver, input (keyboard, mouse, joystick, touchscreen) drivers, the rest · Maintainers:
Nick Dyer, Dmitry Torokhov, Linus Torvalds
From: Nick Dyer <redacted> 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 <redacted> --- drivers/input/touchscreen/atmel_mxt_ts.c | 4 ++++ 1 file changed, 4 insertions(+)
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);
--
2.17.1