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HID: hid-multitouch: support fine-grain orientation reporting

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The current hid-multitouch driver only allow the report of two
orientations, vertical and horizontal. We use the Azimuth orientation
usage 0x3F under the Digitizer usage page to report orientation if the
device supports it.

Changelog:
  v1 -> v2:
   - Fix commit message.
   - Remove resolution reporting for ABS_MT_ORIENTATION.
  v2 -> v3:
   - Fix commit message.
  v3 -> v4:
   - Fix ABS_MT_ORIENTATION ABS param range.
   - Don't set ABS_MT_ORIENTATION in ABS_DG_HEIGHT when it is already
     set by ABS_DG_AZIMUTH.
  v4 -> v5:
   - Improve multi-touch-protocol.rst documentation.

Signed-off-by: Wei-Ning Huang <wnhuang@chromium.org>
Signed-off-by: Wei-Ning Huang <wnhuang@google.com>
Reviewed-by: Dmitry Torokhov <dtor@chromium.org>
Reviewed-by: Henrik Rydberg <rydberg@bitmath.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
This commit is contained in:
Wei-Ning Huang
2017-10-12 14:21:43 +08:00
committed by Jiri Kosina
parent 127e71bd46
commit 00720277a5
3 changed files with 54 additions and 8 deletions
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1
include/linux/hid.h
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@@ -281,6 +281,7 @@ struct hid_item {
#define HID_DG_DEVICECONFIG 0x000d000e
#define HID_DG_DEVICESETTINGS 0x000d0023
#define HID_DG_AZIMUTH 0x000d003f
#define HID_DG_CONFIDENCE 0x000d0047
#define HID_DG_WIDTH 0x000d0048
#define HID_DG_HEIGHT 0x000d0049