From 488abb5c70c19fd37264101d2b6ebee507e1f265 Mon Sep 17 00:00:00 2001
From: Jason Gerecke <killertofu@gmail.com>
Date: Tue, 21 Jul 2015 11:07:25 -0700
Subject: [PATCH] HID: wacom: Report touch width/height/orientation for GENERIC
devices
The HID_DG_WIDTH and HID_DG_HEIGHT usages report with width and height of
contacts. From this information, a crude determination of orientation is
also possible. This patch reports all three to userspace if a device
reports this usage.
Signed-off-by: Jason Gerecke <jason.gerecke@wacom.com>
Signed-off-by: Jiri Kosina <jkosina@suse.com>
---
drivers/hid/wacom_wac.c | 20 ++++++++++++++++++++
1 file changed, 20 insertions(+)
diff --git a/drivers/hid/wacom_wac.c b/drivers/hid/wacom_wac.c
index 09fe5d604c97..280deb293ae2 100644
--- a/drivers/hid/wacom_wac.c
+++ b/drivers/hid/wacom_wac.c
@@ -1497,6 +1497,13 @@ static void wacom_wac_finger_usage_mapping(struct hid_device *hdev,
wacom_map_usage(input, usage, field, EV_ABS,
ABS_MT_POSITION_Y, 4);
break;
+ case HID_DG_WIDTH:
+ case HID_DG_HEIGHT:
+ features->last_slot_field = usage->hid;
+ wacom_map_usage(input, usage, field, EV_ABS, ABS_MT_TOUCH_MAJOR, 0);
+ wacom_map_usage(input, usage, field, EV_ABS, ABS_MT_TOUCH_MINOR, 0);
+ input_set_abs_params(input, ABS_MT_ORIENTATION, 0, 1, 0, 0);
+ break;
case HID_DG_CONTACTID:
features->last_slot_field = usage->hid;
break;
@@ -1545,6 +1552,13 @@ static void wacom_wac_finger_slot(struct wacom_wac *wacom_wac,
hid_data->x);
input_report_abs(input, mt ? ABS_MT_POSITION_Y : ABS_Y,
hid_data->y);
+
+ if (test_bit(ABS_MT_TOUCH_MAJOR, input->absbit)) {
+ input_report_abs(input, ABS_MT_TOUCH_MAJOR, max(hid_data->width, hid_data->height));
+ input_report_abs(input, ABS_MT_TOUCH_MINOR, min(hid_data->width, hid_data->height));
+ if (hid_data->width != hid_data->height)
+ input_report_abs(input, ABS_MT_ORIENTATION, hid_data->width <= hid_data->height ? 0 : 1);
+ }
}
}
@@ -1561,6 +1575,12 @@ static int wacom_wac_finger_event(struct hid_device *hdev,
case HID_GD_Y:
wacom_wac->hid_data.y = value;
break;
+ case HID_DG_WIDTH:
+ wacom_wac->hid_data.width = value;
+ break;
+ case HID_DG_HEIGHT:
+ wacom_wac->hid_data.height = value;
+ break;
case HID_DG_CONTACTID:
wacom_wac->hid_data.id = value;
break;
--
2.34.1