Hi all,
My girlfriend recently purchased the PTH-660P (Intuos Pro Paper Edition,
Medium variant) and nothing worked out-of-the-box in linux.
I went ahead and captured some USB data using wireshark in Windows for most
of the tasks I could think of; let me know if you want any of the capture
files:
- First plug-in/probe
- Pro Pen 2 tip/eraser/buttons
- ExpressKeys (they have both capacititive and click data)
- TouchRing
- TouchRing LED toggle via center button
- Multitouch (up to 10 fingers tested, and HID data says only 10 are
supported)
- Touch enable/disable switch
- Paper mode (no pen/cursor data is transmitted in this mode; the tablet
just records what you draw)
- Sync paper-mode drawings with InkSpace app (the InkSpace app appears to
ping the tablet every few seconds; if a new drawing is available, the
tablet sends it over endpoint 0x82)
- Live mode (tablet streams paper-mode data to InkSpace app; what you draw
on paper shows up on-screen, but only in InkSpace app; sent over endpoint
0x82 just like paper sync)
Based on the above, I was able to tweak linux-wacom to add support for:
- Pen
- Touchpad
- Touch ring
- ExpressKeys (both capacititive and click)
Before I submit a patch and/or work on extra features, I just wanted to
ensure I'm following the relevant guidelines and standards.
These new Intuos Pro tablets are PTH-660/860 (medium, large) and
PTH-660P/860P (medium and large paper edition), whereas the last generation
are PTH-451/651/851 (small, medium, large). They have some quirks that do
not appear to be handled by any of the current device types, and the paper
editions have extra features that need to be handled separately.
In terms of naming, I added new INTUOSP2<M/L>[P] (e.g. INTUOSP2MP) enum
entries and wacom_status_ip2_irq, wacom_ip2_touch, wacom_ip2_touch_msg
functions (where ip2 = intuos pro 2). I also added WACOM_PKGLEN_IP2,
WACOM_BYTES_PER_IP2_PACKET, WACOM_REPORT_IP2_USB, WACOM_REPORT_IP2_TOUCH,
WACOM_HID_DG_CONTACTMAX.
The PTH-660P sends touch events over endpoint 0x85, and
pen/touchring/buttons/status over 0x81. So similar to BAMBOO_PAD, I'm
setting the type to something specific, then in wacom_parse_and_register, I
use pktlen to differentiate between the two endpoints, and override the
type of endpoint 0x81 to be HID_GENERIC. Also similar to BAMBOO_PAD, I
added a quirk to set device_type to WACOM_DEVICETYPE_TOUCH.
The HID_GENERIC type picks up the pen, ring, and non-capacititive buttons
(the cap buttons have usage 0x950 instead of 0x940, so I added an extra
case for that and they work)
The HID entry for CONTACTMAX is 0xFF000055 instead of 0x000D0055 so I added
an extra case to detect it.
The touch packets are similar to the bpt3 packets, but they encode up to 5
8-byte messages in a fixed-length 44-byte packet instead of 7 8-byte
messages. Additionally, when there are more than five touches, two packets
are sent, with the second packet encoding touches 6-10. Due to this
difference, I created functions wacom_ip2_touch and wacom_ip2_touch_msg
based on the bpt3 versions but specific to ip2.
Do these changes sound reasonable at a high level? Please let me know so I
can submit a cleaner patch. Thanks!
- Edward
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