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HID: magicmouse: report last touch up

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The evdev multitouch protocol requires that a last MT sync event must be
sent after all touches are up. This change adds the last MT sync event
to the hid-magicmouse driver.

Also, don't send events when a touch leaves.

Signed-off-by: Chase Douglas <chase.douglas@canonical.com>
Acked-by: Michael Poole <mdpoole@troilus.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
This commit is contained in:
Chase Douglas 2010-07-05 09:57:52 -04:00 committed by Jiri Kosina
parent c04266889b
commit e3612e8669
1 changed files with 20 additions and 2 deletions
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22
drivers/hid/hid-magicmouse.c
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@ -98,6 +98,7 @@ struct magicmouse_sc {
short scroll_x;
short scroll_y;
u8 size;
u8 down;
} touches[16];
int tracking_ids[16];
};
@ -170,6 +171,7 @@ static void magicmouse_emit_touch(struct magicmouse_sc *msc, int raw_id, u8 *tda
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;
/* Store tracking ID and other fields. */
msc->tracking_ids[raw_id] = id;
@ -221,9 +223,11 @@ static void magicmouse_emit_touch(struct magicmouse_sc *msc, int raw_id, u8 *tda
}
/* Generate the input events for this touch. */
if (report_touches) {
if (report_touches && down) {
int orientation = (misc >> 10) - 32;
msc->touches[id].down = 1;
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]);
@ -243,7 +247,7 @@ static int magicmouse_raw_event(struct hid_device *hdev,
{
struct magicmouse_sc *msc = hid_get_drvdata(hdev);
struct input_dev *input = msc->input;
int x, y, ts, ii, clicks;
int x, y, ts, ii, clicks, last_up;
switch (data[0]) {
case 0x10:
@ -263,6 +267,20 @@ static int magicmouse_raw_event(struct hid_device *hdev,
msc->ntouches = (size - 6) / 8;
for (ii = 0; ii < msc->ntouches; ii++)
magicmouse_emit_touch(msc, ii, data + ii * 8 + 6);
if (report_touches) {
last_up = 1;
for (ii = 0; ii < ARRAY_SIZE(msc->touches); ii++) {
if (msc->touches[ii].down) {
last_up = 0;
msc->touches[ii].down = 0;
}
}
if (last_up) {
input_mt_sync(input);
}
}
/* When emulating three-button mode, it is important
* to have the current touch information before
* generating a click event.