HID: add pressure support for the Stantum multitouch panel

Added pressure handling for Stantum multitouch panels

Signed-off-by: Stephane Chatty <chatty@enac.fr>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

1 files changed, 5 insertions, 4 deletions

diff --git a/drivers/hid/hid-stantum.c b/drivers/hid/hid-stantum.c
index 1b7b1659e7bb..04b0b986f5f4 100644
--- a/drivers/hid/hid-stantum.c
+++ b/drivers/hid/hid-stantum.c
@@ -66,7 +66,6 @@ static int stantum_input_mapping(struct hid_device *hdev, struct hid_input *hi,
                 case HID_DG_DEVICEINDEX:
                 case HID_DG_CONTACTCOUNT:
                 case HID_DG_CONTACTMAX:
-                case HID_DG_TIPPRESSURE:
                         return -1;
 
                 case HID_DG_TIPSWITCH:
@@ -84,6 +83,11 @@ static int stantum_input_mapping(struct hid_device *hdev, struct hid_input *hi,
                         input_set_abs_params(hi->input, ABS_MT_ORIENTATION,
                                         1, 1, 0, 0);
                         return 1;
+                case HID_DG_TIPPRESSURE:
+                        hid_map_usage(hi, usage, bit, max,
+                                        EV_ABS, ABS_MT_PRESSURE);
+                        return 1;
+
                 case HID_DG_CONTACTID:
                         hid_map_usage(hi, usage, bit, max,
                                         EV_ABS, ABS_MT_TRACKING_ID);
@@ -140,10 +144,7 @@ static void stantum_filter_event(struct stantum_data *sd,
         input_event(input, EV_ABS, ABS_MT_TOUCH_MAJOR, wide ? sd->w : sd->h);
         input_event(input, EV_ABS, ABS_MT_TOUCH_MINOR, wide ? sd->h : sd->w);
 
-#if 0
-        /* MT_PRESSURE does not exist yet */
         input_event(input, EV_ABS, ABS_MT_PRESSURE, sd->z);
-#endif
 
         input_mt_sync(input);
         sd->valid = false;