From 2ca3ba0ae4cf0bf9c17f1a04298c3acca24be5e0 Mon Sep 17 00:00:00 2001 From: Nick Dyer Date: Fri, 27 Jul 2018 11:49:10 -0700 Subject: [PATCH] Input: atmel_mxt_ts - don't report zero pressure from T9 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 Signed-off-by: Dmitry Torokhov --- 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 77387f896262..e32667d82d0f 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);