From 090ad325068810a9edb09dfe8fec97a724c5743f Mon Sep 17 00:00:00 2001 From: Duson Lin Date: Mon, 20 Apr 2015 09:59:04 -0700 Subject: [PATCH] Input: elan_i2c - report hovering contacts When hover is detected report ABS_MT_DISTANCE as 1; for active contacts the distance is reported as 0. Signed-off-by: Duson Lin Signed-off-by: Dmitry Torokhov --- drivers/input/mouse/elan_i2c_core.c | 15 +++++++++++---- 1 file changed, 11 insertions(+), 4 deletions(-) diff --git a/drivers/input/mouse/elan_i2c_core.c b/drivers/input/mouse/elan_i2c_core.c index 22f38521c083..fd5068b2542d 100644 --- a/drivers/input/mouse/elan_i2c_core.c +++ b/drivers/input/mouse/elan_i2c_core.c @@ -52,6 +52,7 @@ #define ETP_REPORT_ID_OFFSET 2 #define ETP_TOUCH_INFO_OFFSET 3 #define ETP_FINGER_DATA_OFFSET 4 +#define ETP_HOVER_INFO_OFFSET 30 #define ETP_MAX_REPORT_LEN 34 /* The main device structure */ @@ -725,7 +726,7 @@ static const struct attribute_group *elan_sysfs_groups[] = { */ static void elan_report_contact(struct elan_tp_data *data, int contact_num, bool contact_valid, - u8 *finger_data) + bool hover_event, u8 *finger_data) { struct input_dev *input = data->input; unsigned int pos_x, pos_y; @@ -769,7 +770,9 @@ static void elan_report_contact(struct elan_tp_data *data, input_mt_report_slot_state(input, MT_TOOL_FINGER, true); input_report_abs(input, ABS_MT_POSITION_X, pos_x); input_report_abs(input, ABS_MT_POSITION_Y, data->max_y - pos_y); - input_report_abs(input, ABS_MT_PRESSURE, scaled_pressure); + input_report_abs(input, ABS_MT_DISTANCE, hover_event); + input_report_abs(input, ABS_MT_PRESSURE, + hover_event ? 0 : scaled_pressure); input_report_abs(input, ABS_TOOL_WIDTH, mk_x); input_report_abs(input, ABS_MT_TOUCH_MAJOR, major); input_report_abs(input, ABS_MT_TOUCH_MINOR, minor); @@ -785,11 +788,14 @@ static void elan_report_absolute(struct elan_tp_data *data, u8 *packet) u8 *finger_data = &packet[ETP_FINGER_DATA_OFFSET]; int i; u8 tp_info = packet[ETP_TOUCH_INFO_OFFSET]; - bool contact_valid; + u8 hover_info = packet[ETP_HOVER_INFO_OFFSET]; + bool contact_valid, hover_event; + hover_event = hover_info & 0x40; for (i = 0; i < ETP_MAX_FINGERS; i++) { contact_valid = tp_info & (1U << (3 + i)); - elan_report_contact(data, i, contact_valid, finger_data); + elan_report_contact(data, i, contact_valid, hover_event, + finger_data); if (contact_valid) finger_data += ETP_FINGER_DATA_LEN; @@ -883,6 +889,7 @@ static int elan_setup_input_device(struct elan_tp_data *data) ETP_FINGER_WIDTH * max_width, 0, 0); input_set_abs_params(input, ABS_MT_TOUCH_MINOR, 0, ETP_FINGER_WIDTH * min_width, 0, 0); + input_set_abs_params(input, ABS_MT_DISTANCE, 0, 1, 0, 0); data->input = input; -- 2.39.5