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authorBen Gamari <ben@smart-cactus.org>2016-10-04 11:33:25 -0700
committerDmitry Torokhov <dmitry.torokhov@gmail.com>2016-10-04 11:46:41 -0700
commit4777ac220c430173e297237b896932ed5fd8aaf3 (patch)
tree86fde151cee555985888c9b1aa8578accb2a1580 /drivers/input
parentf9a703a54d16ba2470391c4b12236ee56591d50c (diff)
downloadlinux-4777ac220c430173e297237b896932ed5fd8aaf3.tar.bz2
Input: ALPS - add touchstick support for SS5 hardware
Add touchstick support for the so-called SS5 hardware, which uses a variant of the SS4 protocol. Reviewed-by: Pali Rohár <pali.rohar@gmail.com> Tested-by: Michal Hocko <mhocko@suse.com> Signed-off-by: Ben Gamari <ben@smart-cactus.org> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Diffstat (limited to 'drivers/input')
-rw-r--r--drivers/input/mouse/alps.c65
-rw-r--r--drivers/input/mouse/alps.h2
2 files changed, 56 insertions, 11 deletions
diff --git a/drivers/input/mouse/alps.c b/drivers/input/mouse/alps.c
index 936f07a4e35f..8e15783d2932 100644
--- a/drivers/input/mouse/alps.c
+++ b/drivers/input/mouse/alps.c
@@ -1156,15 +1156,28 @@ static unsigned char alps_get_pkt_id_ss4_v2(unsigned char *byte)
{
unsigned char pkt_id = SS4_PACKET_ID_IDLE;
- if (byte[0] == 0x18 && byte[1] == 0x10 && byte[2] == 0x00 &&
- (byte[3] & 0x88) == 0x08 && byte[4] == 0x10 && byte[5] == 0x00) {
- pkt_id = SS4_PACKET_ID_IDLE;
- } else if (!(byte[3] & 0x10)) {
- pkt_id = SS4_PACKET_ID_ONE;
- } else if (!(byte[3] & 0x20)) {
+ switch (byte[3] & 0x30) {
+ case 0x00:
+ if (byte[0] == 0x18 && byte[1] == 0x10 && byte[2] == 0x00 &&
+ (byte[3] & 0x88) == 0x08 && byte[4] == 0x10 &&
+ byte[5] == 0x00) {
+ pkt_id = SS4_PACKET_ID_IDLE;
+ } else {
+ pkt_id = SS4_PACKET_ID_ONE;
+ }
+ break;
+ case 0x10:
+ /* two-finger finger positions */
pkt_id = SS4_PACKET_ID_TWO;
- } else {
+ break;
+ case 0x20:
+ /* stick pointer */
+ pkt_id = SS4_PACKET_ID_STICK;
+ break;
+ case 0x30:
+ /* third and fourth finger positions */
pkt_id = SS4_PACKET_ID_MULTI;
+ break;
}
return pkt_id;
@@ -1246,16 +1259,38 @@ static int alps_decode_ss4_v2(struct alps_fields *f,
}
break;
+ case SS4_PACKET_ID_STICK:
+ if (!(priv->flags & ALPS_DUALPOINT)) {
+ psmouse_warn(psmouse,
+ "Rejected trackstick packet from non DualPoint device");
+ } else {
+ int x = (s8)(((p[0] & 1) << 7) | (p[1] & 0x7f));
+ int y = (s8)(((p[3] & 1) << 7) | (p[2] & 0x7f));
+
+ input_report_rel(priv->dev2, REL_X, x);
+ input_report_rel(priv->dev2, REL_Y, -y);
+ }
+ break;
+
case SS4_PACKET_ID_IDLE:
default:
memset(f, 0, sizeof(struct alps_fields));
break;
}
- f->left = !!(SS4_BTN_V2(p) & 0x01);
- if (!(priv->flags & ALPS_BUTTONPAD)) {
- f->right = !!(SS4_BTN_V2(p) & 0x02);
- f->middle = !!(SS4_BTN_V2(p) & 0x04);
+ /* handle buttons */
+ if (pkt_id == SS4_PACKET_ID_STICK) {
+ f->ts_left = !!(SS4_BTN_V2(p) & 0x01);
+ if (!(priv->flags & ALPS_BUTTONPAD)) {
+ f->ts_right = !!(SS4_BTN_V2(p) & 0x02);
+ f->ts_middle = !!(SS4_BTN_V2(p) & 0x04);
+ }
+ } else {
+ f->left = !!(SS4_BTN_V2(p) & 0x01);
+ if (!(priv->flags & ALPS_BUTTONPAD)) {
+ f->right = !!(SS4_BTN_V2(p) & 0x02);
+ f->middle = !!(SS4_BTN_V2(p) & 0x04);
+ }
}
return 0;
@@ -1266,6 +1301,7 @@ static void alps_process_packet_ss4_v2(struct psmouse *psmouse)
struct alps_data *priv = psmouse->private;
unsigned char *packet = psmouse->packet;
struct input_dev *dev = psmouse->dev;
+ struct input_dev *dev2 = priv->dev2;
struct alps_fields *f = &priv->f;
memset(f, 0, sizeof(struct alps_fields));
@@ -1311,6 +1347,13 @@ static void alps_process_packet_ss4_v2(struct psmouse *psmouse)
input_report_abs(dev, ABS_PRESSURE, f->pressure);
input_sync(dev);
+
+ if (priv->flags & ALPS_DUALPOINT) {
+ input_report_key(dev2, BTN_LEFT, f->ts_left);
+ input_report_key(dev2, BTN_RIGHT, f->ts_right);
+ input_report_key(dev2, BTN_MIDDLE, f->ts_middle);
+ input_sync(dev2);
+ }
}
static bool alps_is_valid_package_ss4_v2(struct psmouse *psmouse)
diff --git a/drivers/input/mouse/alps.h b/drivers/input/mouse/alps.h
index d37f814dc447..b9417e2d7ad3 100644
--- a/drivers/input/mouse/alps.h
+++ b/drivers/input/mouse/alps.h
@@ -37,12 +37,14 @@
* or there's button activities.
* SS4_PACKET_ID_TWO: There's two or more fingers on touchpad
* SS4_PACKET_ID_MULTI: There's three or more fingers on touchpad
+ * SS4_PACKET_ID_STICK: A stick pointer packet
*/
enum SS4_PACKET_ID {
SS4_PACKET_ID_IDLE = 0,
SS4_PACKET_ID_ONE,
SS4_PACKET_ID_TWO,
SS4_PACKET_ID_MULTI,
+ SS4_PACKET_ID_STICK,
};
#define SS4_COUNT_PER_ELECTRODE 256