Focaltech touchpads report finger width in packet[5] of absolute packet. Range for width in raw format is 0x10 - 0x70. Second half-byte is always 0. 0xff is reported, when a large contact area is detected. This can be handled in userspace.
Signed-off-by: Dmitry Tunin <[email protected]> --- drivers/input/mouse/focaltech.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/drivers/input/mouse/focaltech.c b/drivers/input/mouse/focaltech.c index 23d2594..25e4bb3 100644 --- a/drivers/input/mouse/focaltech.c +++ b/drivers/input/mouse/focaltech.c @@ -90,6 +90,12 @@ struct focaltech_finger_state { */ unsigned int x; unsigned int y; + + /* + * Finger width 0-7 and 15 for 'latching' + * 15 value stays until the finger is released + */ + unsigned int width; }; /* @@ -137,6 +143,7 @@ static void focaltech_report_state(struct psmouse *psmouse) input_report_abs(dev, ABS_MT_POSITION_X, clamped_x); input_report_abs(dev, ABS_MT_POSITION_Y, priv->y_max - clamped_y); + input_report_abs(dev, ABS_TOOL_WIDTH, finger->width); } } input_mt_report_pointer_emulation(dev, true); @@ -187,6 +194,7 @@ static void focaltech_process_abs_packet(struct psmouse *psmouse, state->fingers[finger].x = ((packet[1] & 0xf) << 8) | packet[2]; state->fingers[finger].y = (packet[3] << 8) | packet[4]; + state->fingers[finger].width = packet[5] >> 4; state->fingers[finger].valid = true; } @@ -331,6 +339,7 @@ static void focaltech_set_input_params(struct psmouse *psmouse) __set_bit(EV_ABS, dev->evbit); input_set_abs_params(dev, ABS_MT_POSITION_X, 0, priv->x_max, 0, 0); input_set_abs_params(dev, ABS_MT_POSITION_Y, 0, priv->y_max, 0, 0); + input_set_abs_params(dev, ABS_TOOL_WIDTH, 0, 15, 0, 0); input_mt_init_slots(dev, 5, INPUT_MT_POINTER); __set_bit(INPUT_PROP_BUTTONPAD, dev->propbit); } -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-input" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
