HID: add support for Acer T230H multitouch

[safe/jmp/linux-2.6] / drivers / hid / hid-ntrig.c

diff --git a/drivers/hid/hid-ntrig.c b/drivers/hid/hid-ntrig.c
index 75ed9d2..49ce69d 100644 (file)
--- a/drivers/hid/hid-ntrig.c
+++ b/drivers/hid/hid-ntrig.c
@@ -27,6 +27,9 @@
 struct ntrig_data {
        __s32 x, y, id, w, h;
        char reading_a_point, found_contact_id;
+       char pen_active;
+       char finger_active;
+       char inverted;
 };
 
 /*
@@ -63,10 +66,7 @@ static int ntrig_input_mapping(struct hid_device *hdev, struct hid_input *hi,
        case HID_UP_DIGITIZER:
                switch (usage->hid) {
                /* we do not want to map these for now */
-               case HID_DG_INVERT: /* value is always 0 */
-               case HID_DG_ERASER: /* value is always 0 */
                case HID_DG_CONTACTID: /* value is useless */
-               case HID_DG_BARRELSWITCH:  /* doubtful */
                case HID_DG_INPUTMODE:
                case HID_DG_DEVICEINDEX:
                case HID_DG_CONTACTCOUNT:
@@ -125,6 +125,18 @@ static int ntrig_event (struct hid_device *hid, struct hid_field *field,
 
         if (hid->claimed & HID_CLAIMED_INPUT) {
                switch (usage->hid) {
+
+               case HID_DG_INRANGE:
+                       if (field->application & 0x3)
+                               nd->pen_active = (value != 0);
+                       else
+                               nd->finger_active = (value != 0);
+                       return 0;
+
+               case HID_DG_INVERT:
+                       nd->inverted = value;
+                       return 0;
+
                case HID_GD_X:
                        nd->x = value;
                        nd->reading_a_point = 1;
@@ -147,7 +159,11 @@ static int ntrig_event (struct hid_device *hid, struct hid_field *field,
                         * report received in a finger event. We want
                         * to emit a normal (X, Y) position
                         */
-                       if (! nd->found_contact_id) {
+                       if (!nd->found_contact_id) {
+                               if (nd->pen_active && nd->finger_active) {
+                                       input_report_key(input, BTN_TOOL_DOUBLETAP, 0);
+                                       input_report_key(input, BTN_TOOL_DOUBLETAP, 1);
+                               }
                                input_event(input, EV_ABS, ABS_X, nd->x);
                                input_event(input, EV_ABS, ABS_Y, nd->y);
                        }
@@ -159,6 +175,14 @@ static int ntrig_event (struct hid_device *hid, struct hid_field *field,
                         * to emit a normal (X, Y) position
                         */
                        if (! nd->found_contact_id) {
+                               if (nd->pen_active && nd->finger_active) {
+                                       input_report_key(input,
+                                                       nd->inverted ? BTN_TOOL_RUBBER : BTN_TOOL_PEN
+                                                       , 0);
+                                       input_report_key(input,
+                                                       nd->inverted ? BTN_TOOL_RUBBER : BTN_TOOL_PEN
+                                                       , 1);
+                               }
                                input_event(input, EV_ABS, ABS_X, nd->x);
                                input_event(input, EV_ABS, ABS_Y, nd->y);
                                input_event(input, EV_ABS, ABS_PRESSURE, value);
@@ -233,6 +257,7 @@ static int ntrig_probe(struct hid_device *hdev, const struct hid_device_id *id)
 
        if (ret)
                kfree (nd);
+
        return ret;
 }
 
@@ -265,12 +290,12 @@ static struct hid_driver ntrig_driver = {
        .event = ntrig_event,
 };
 
-static int ntrig_init(void)
+static int __init ntrig_init(void)
 {
        return hid_register_driver(&ntrig_driver);
 }
 
-static void ntrig_exit(void)
+static void __exit ntrig_exit(void)
 {
        hid_unregister_driver(&ntrig_driver);
 }