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Input: elan_i2c - report hovering contacts

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When hover is detected report ABS_MT_DISTANCE as 1; for active contacts
the distance is reported as 0.

Signed-off-by: Duson Lin <dusonlin@emc.com.tw>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
This commit is contained in:
Duson Lin 2015-04-20 09:59:04 -07:00 committed by Dmitry Torokhov
parent 8c0776a8f0
commit 090ad32506
1 changed files with 11 additions and 4 deletions
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15
drivers/input/mouse/elan_i2c_core.c
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@ -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;