HID: wacom: implement the finger part of the HID generic handling
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Acked-by: Jason Gerecke <killertofu@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
diff --git a/drivers/hid/wacom_wac.c b/drivers/hid/wacom_wac.c
index e77d46d..586b240 100644
--- a/drivers/hid/wacom_wac.c
+++ b/drivers/hid/wacom_wac.c
@@ -1372,6 +1372,117 @@
}
}
+static void wacom_wac_finger_usage_mapping(struct hid_device *hdev,
+ struct hid_field *field, struct hid_usage *usage)
+{
+ struct wacom *wacom = hid_get_drvdata(hdev);
+ struct wacom_wac *wacom_wac = &wacom->wacom_wac;
+ struct input_dev *input = wacom_wac->input;
+ unsigned touch_max = wacom_wac->features.touch_max;
+
+ switch (usage->hid) {
+ case HID_GD_X:
+ if (touch_max == 1)
+ wacom_map_usage(wacom, usage, field, EV_ABS, ABS_X, 4);
+ else
+ wacom_map_usage(wacom, usage, field, EV_ABS,
+ ABS_MT_POSITION_X, 4);
+ break;
+ case HID_GD_Y:
+ if (touch_max == 1)
+ wacom_map_usage(wacom, usage, field, EV_ABS, ABS_Y, 4);
+ else
+ wacom_map_usage(wacom, usage, field, EV_ABS,
+ ABS_MT_POSITION_Y, 4);
+ break;
+ case HID_DG_CONTACTID:
+ input_mt_init_slots(input, wacom_wac->features.touch_max,
+ INPUT_MT_DIRECT);
+ break;
+ case HID_DG_INRANGE:
+ break;
+ case HID_DG_INVERT:
+ break;
+ case HID_DG_TIPSWITCH:
+ wacom_map_usage(wacom, usage, field, EV_KEY, BTN_TOUCH, 0);
+ break;
+ }
+}
+
+static int wacom_wac_finger_event(struct hid_device *hdev,
+ struct hid_field *field, struct hid_usage *usage, __s32 value)
+{
+ struct wacom *wacom = hid_get_drvdata(hdev);
+ struct wacom_wac *wacom_wac = &wacom->wacom_wac;
+
+ switch (usage->hid) {
+ case HID_GD_X:
+ wacom_wac->hid_data.x = value;
+ break;
+ case HID_GD_Y:
+ wacom_wac->hid_data.y = value;
+ break;
+ case HID_DG_CONTACTID:
+ wacom_wac->hid_data.id = value;
+ break;
+ case HID_DG_TIPSWITCH:
+ wacom_wac->hid_data.tipswitch = value;
+ break;
+ }
+
+
+ return 0;
+}
+
+static void wacom_wac_finger_mt_report(struct wacom_wac *wacom_wac,
+ struct input_dev *input, bool touch)
+{
+ int slot;
+ struct hid_data *hid_data = &wacom_wac->hid_data;
+
+ slot = input_mt_get_slot_by_key(input, hid_data->id);
+
+ input_mt_slot(input, slot);
+ input_mt_report_slot_state(input, MT_TOOL_FINGER, touch);
+ if (touch) {
+ input_report_abs(input, ABS_MT_POSITION_X, hid_data->x);
+ input_report_abs(input, ABS_MT_POSITION_Y, hid_data->y);
+ }
+ input_mt_sync_frame(input);
+}
+
+static void wacom_wac_finger_single_touch_report(struct wacom_wac *wacom_wac,
+ struct input_dev *input, bool touch)
+{
+ struct hid_data *hid_data = &wacom_wac->hid_data;
+
+ if (touch) {
+ input_report_abs(input, ABS_X, hid_data->x);
+ input_report_abs(input, ABS_Y, hid_data->y);
+ }
+ input_report_key(input, BTN_TOUCH, touch);
+}
+
+static void wacom_wac_finger_report(struct hid_device *hdev,
+ struct hid_report *report)
+{
+ struct wacom *wacom = hid_get_drvdata(hdev);
+ struct wacom_wac *wacom_wac = &wacom->wacom_wac;
+ struct input_dev *input = wacom_wac->input;
+ bool touch = wacom_wac->hid_data.tipswitch &&
+ !wacom_wac->shared->stylus_in_proximity;
+ unsigned touch_max = wacom_wac->features.touch_max;
+
+ if (touch_max > 1)
+ wacom_wac_finger_mt_report(wacom_wac, input, touch);
+ else
+ wacom_wac_finger_single_touch_report(wacom_wac, input, touch);
+ input_sync(input);
+
+ /* keep touch state for pen event */
+ wacom_wac->shared->touch_down = touch;
+}
+
#define WACOM_PEN_FIELD(f) (((f)->logical == HID_DG_STYLUS) || \
((f)->physical == HID_DG_STYLUS))
#define WACOM_FINGER_FIELD(f) (((f)->logical == HID_DG_FINGER) || \
@@ -1389,6 +1500,9 @@
if (WACOM_PEN_FIELD(field))
return wacom_wac_pen_usage_mapping(hdev, field, usage);
+
+ if (WACOM_FINGER_FIELD(field))
+ return wacom_wac_finger_usage_mapping(hdev, field, usage);
}
int wacom_wac_event(struct hid_device *hdev, struct hid_field *field,
@@ -1402,6 +1516,9 @@
if (WACOM_PEN_FIELD(field))
return wacom_wac_pen_event(hdev, field, usage, value);
+ if (WACOM_FINGER_FIELD(field))
+ return wacom_wac_finger_event(hdev, field, usage, value);
+
return 0;
}
@@ -1416,6 +1533,9 @@
if (WACOM_PEN_FIELD(field))
return wacom_wac_pen_report(hdev, report);
+
+ if (WACOM_FINGER_FIELD(field))
+ return wacom_wac_finger_report(hdev, report);
}
static int wacom_bpt_touch(struct wacom_wac *wacom)