From: HungNien Chen <hn.chen@xxxxxxxxxxxxxxx>
This change is from Jonathan Clarke and have been discussed in previous
thread(2017/01/24). Just doing a slight change in quirk name from Benjamin's
comment.
Signed-off-by: HungNien Chen <hn.chen@xxxxxxxxxxxxxxx>
---
drivers/hid/hid-multitouch.c | 18 ++++++++++++++----
1 file changed, 14 insertions(+), 4 deletions(-)
diff --git a/drivers/hid/hid-multitouch.c b/drivers/hid/hid-multitouch.c
index 6926474..24d5b6d 100644
--- a/drivers/hid/hid-multitouch.c
+++ b/drivers/hid/hid-multitouch.c
@@ -69,6 +69,7 @@
#define MT_QUIRK_CONTACT_CNT_ACCURATE (1 << 12)
#define MT_QUIRK_FORCE_GET_FEATURE (1 << 13)
#define MT_QUIRK_FIX_CONST_CONTACT_ID (1 << 14)
+#define MT_QUIRK_TOUCH_SIZE_SCALING (1 << 15)
#define MT_INPUTMODE_TOUCHSCREEN 0x02
#define MT_INPUTMODE_TOUCHPAD 0x03
@@ -222,7 +223,8 @@ static int cypress_compute_slot(struct mt_device *td)
*/
{ .name = MT_CLS_3M,
.quirks = MT_QUIRK_VALID_IS_CONFIDENCE |
- MT_QUIRK_SLOT_IS_CONTACTID,
+ MT_QUIRK_SLOT_IS_CONTACTID |
+ MT_QUIRK_TOUCH_SIZE_SCALING,
.sn_move = 2048,
.sn_width = 128,
.sn_height = 128,
@@ -658,9 +660,17 @@ static void mt_complete_slot(struct mt_device *td, struct input_dev *input)
if (active) {
/* this finger is in proximity of the sensor */
int wide = (s->w > s->h);
- /* divided by two to match visual scale of touch */
- int major = max(s->w, s->h) >> 1;
- int minor = min(s->w, s->h) >> 1;
+ int major = max(s->w, s->h);
+ int minor = min(s->w, s->h);
+
+ /*
+ * divided by two to match visual scale of touch
+ * for devices with this quirk
+ */
+ if (td->mtclass.quirks & MT_QUIRK_TOUCH_SIZE_SCALING) {
+ major = major >> 1;
+ minor = minor >> 1;
+ }
input_event(input, EV_ABS, ABS_MT_POSITION_X, s->x);
input_event(input, EV_ABS, ABS_MT_POSITION_Y, s->y);
--
1.9.1
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