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SubjectRe: [PATCH 6/6] Input: elan_i2c - Add hover detection flag
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Hi Dmitry,

Is this patch looks good for you?
If you have any advice, please let me know.

----------------------------------------------
Thank you
ELAN Duson
✉ Email: dusonlin@emc.com.tw
----------------------------------------------





> duson <dusonlin@emc.com.tw> 於 2015年4月17日 上午9:56 寫道:
>
> When hover event coming, set ABS_MT_DISTANCE as 1, otherwise clear to 0.
>
> Signed-off-by: Duson Lin <dusonlin@emc.com.tw>
> ---
> 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 6333ba6..da7893f 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;
>
>
>
>
>
>
>



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