diff options
| -rw-r--r-- | drivers/hid/hid-magicmouse.c | 25 |
1 files changed, 13 insertions, 12 deletions
diff --git a/drivers/hid/hid-magicmouse.c b/drivers/hid/hid-magicmouse.c index 004c01d9a61a..402682e0c2f4 100644 --- a/drivers/hid/hid-magicmouse.c +++ b/drivers/hid/hid-magicmouse.c @@ -158,18 +158,21 @@ static void magicmouse_emit_buttons(struct magicmouse_sc *msc, int state) static void magicmouse_emit_touch(struct magicmouse_sc *msc, int raw_id, u8 *tdata) { struct input_dev *input = msc->input; - __s32 x_y = tdata[0] << 8 | tdata[1] << 16 | tdata[2] << 24; - int misc = tdata[5] | tdata[6] << 8; - int id = (misc >> 6) & 15; - int x = x_y << 12 >> 20; - int y = -(x_y >> 20); - int down = (tdata[7] & TOUCH_STATE_MASK) != TOUCH_STATE_NONE; + int id = (tdata[6] << 2 | tdata[5] >> 6) & 0xf; + int x = (tdata[1] << 28 | tdata[0] << 20) >> 20; + int y = -((tdata[2] << 24 | tdata[1] << 16) >> 20); + int size = tdata[5] & 0x3f; + int orientation = (tdata[6] >> 2) - 32; + int touch_major = tdata[3]; + int touch_minor = tdata[4]; + int state = tdata[7] & TOUCH_STATE_MASK; + int down = state != TOUCH_STATE_NONE; /* Store tracking ID and other fields. */ msc->tracking_ids[raw_id] = id; msc->touches[id].x = x; msc->touches[id].y = y; - msc->touches[id].size = misc & 63; + msc->touches[id].size = size; /* If requested, emulate a scroll wheel by detecting small * vertical touch motions. @@ -180,7 +183,7 @@ static void magicmouse_emit_touch(struct magicmouse_sc *msc, int raw_id, u8 *tda int step_y = msc->touches[id].scroll_y - y; /* Calculate and apply the scroll motion. */ - switch (tdata[7] & TOUCH_STATE_MASK) { + switch (state) { case TOUCH_STATE_START: msc->touches[id].scroll_x = x; msc->touches[id].scroll_y = y; @@ -216,11 +219,9 @@ static void magicmouse_emit_touch(struct magicmouse_sc *msc, int raw_id, u8 *tda /* Generate the input events for this touch. */ if (report_touches && down) { - int orientation = (misc >> 10) - 32; - input_report_abs(input, ABS_MT_TRACKING_ID, id); - input_report_abs(input, ABS_MT_TOUCH_MAJOR, tdata[3]); - input_report_abs(input, ABS_MT_TOUCH_MINOR, tdata[4]); + input_report_abs(input, ABS_MT_TOUCH_MAJOR, touch_major); + input_report_abs(input, ABS_MT_TOUCH_MINOR, touch_minor); input_report_abs(input, ABS_MT_ORIENTATION, orientation); input_report_abs(input, ABS_MT_POSITION_X, x); input_report_abs(input, ABS_MT_POSITION_Y, y); |