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Input: alps - decode the position packet first

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We should decode the position packet before the packet with the bitmap
data.  This way we can use the more accurate position info in
process_bitmap() to get better results.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
This commit is contained in:
Hans de Goede 2015-05-20 14:40:06 -07:00 committed by Dmitry Torokhov
parent a839cd579b
commit 44b77f38dc
1 changed files with 14 additions and 21 deletions
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35
drivers/input/mouse/alps.c
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@ -688,24 +688,17 @@ static void alps_process_touchpad_packet_v3_v5(struct psmouse *psmouse)
*/
if (f->is_mp) {
fingers = f->fingers;
/*
* Bitmap processing uses position packet's coordinate
* data, so we need to do decode it first.
*/
priv->decode_fields(f, priv->multi_data, psmouse);
if (priv->proto_version == ALPS_PROTO_V3 ||
priv->proto_version == ALPS_PROTO_V3_RUSHMORE) {
if (alps_process_bitmap(priv, f) == 0)
fingers = 0; /* Use st data */
/* Now process position packet */
priv->decode_fields(f, priv->multi_data,
psmouse);
} else {
/*
* Because Dolphin uses position packet's
* coordinate data as Pt1 and uses it to
* calculate Pt2, so we need to do position
* packet decode first.
*/
priv->decode_fields(f, priv->multi_data,
psmouse);
/*
* Since Dolphin's finger number is reliable,
* there is no need to compare with bmap_fn.
@ -873,6 +866,14 @@ static void alps_process_packet_v4(struct psmouse *psmouse)
priv->multi_data[offset] = packet[6];
priv->multi_data[offset + 1] = packet[7];
f->left = !!(packet[4] & 0x01);
f->right = !!(packet[4] & 0x02);
f->st.x = ((packet[1] & 0x7f) << 4) | ((packet[3] & 0x30) >> 2) |
((packet[0] & 0x30) >> 4);
f->st.y = ((packet[2] & 0x7f) << 4) | (packet[3] & 0x0f);
f->pressure = packet[5] & 0x7f;
if (++priv->multi_packet > 2) {
priv->multi_packet = 0;
@ -887,14 +888,6 @@ static void alps_process_packet_v4(struct psmouse *psmouse)
f->fingers = alps_process_bitmap(priv, f);
}
f->left = !!(packet[4] & 0x01);
f->right = !!(packet[4] & 0x02);
f->st.x = ((packet[1] & 0x7f) << 4) | ((packet[3] & 0x30) >> 2) |
((packet[0] & 0x30) >> 4);
f->st.y = ((packet[2] & 0x7f) << 4) | (packet[3] & 0x0f);
f->pressure = packet[5] & 0x7f;
alps_report_semi_mt_data(psmouse, f->fingers);
}