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Input: add support for Wacom protocol 4 serial tablets

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Recent version of xf86-input-wacom no longer support directly accessing
serial tablets. Instead xf86-input-wacom now expects all wacom tablets to
be driven by the kernel and to show up as evdev devices.

This has caused old serial Wacom tablets to stop working for people who still
have such tablets. Julian Squires has written a serio input driver to fix this:
https://github.com/tokenrove/wacom-serial-iv

This is a cleaned up version of this driver with improved Graphire support
(I own an old Graphire myself).

Signed-off-by: Julian Squires <julian@cipht.net>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
This commit is contained in:
Hans de Goede
2014-07-20 14:33:23 -07:00
committed by Dmitry Torokhov
parent 997502f893
commit b4e05923f9
5 changed files with 635 additions and 0 deletions
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MAINTAINERS
+7
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@@ -9708,6 +9708,13 @@ M: Pierre Ossman <pierre@ossman.eu>
S: Maintained
F: drivers/mmc/host/wbsd.*
WACOM PROTOCOL 4 SERIAL TABLETS
M: Julian Squires <julian@cipht.net>
M: Hans de Goede <hdegoede@redhat.com>
L: linux-input@vger.kernel.org
S: Maintained
F: drivers/input/tablet/wacom_serial4.c
WATCHDOG DEVICE DRIVERS
M: Wim Van Sebroeck <wim@iguana.be>
L: linux-watchdog@vger.kernel.org
drivers/input/tablet/Kconfig
+10
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@@ -89,4 +89,14 @@ config TABLET_USB_WACOM
To compile this driver as a module, choose M here: the
module will be called wacom.
config TABLET_SERIAL_WACOM4
tristate "Wacom protocol 4 serial tablet support"
select SERIO
help
Say Y here if you want to use Wacom protocol 4 serial tablets.
E.g. serial versions of the Cintiq, Graphire or Penpartner.
To compile this driver as a module, choose M here: the
module will be called wacom_serial4.
endif
drivers/input/tablet/Makefile
+1
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@@ -11,3 +11,4 @@ obj-$(CONFIG_TABLET_USB_GTCO) += gtco.o
obj-$(CONFIG_TABLET_USB_HANWANG) += hanwang.o
obj-$(CONFIG_TABLET_USB_KBTAB) += kbtab.o
obj-$(CONFIG_TABLET_USB_WACOM) += wacom.o
obj-$(CONFIG_TABLET_SERIAL_WACOM4) += wacom_serial4.o
drivers/input/tablet/wacom_serial4.c
+616
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File diff suppressed because it is too large Load Diff
include/uapi/linux/serio.h
+1
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@@ -76,5 +76,6 @@
#define SERIO_HAMPSHIRE 0x3b
#define SERIO_PS2MULT 0x3c
#define SERIO_TSC40 0x3d
#define SERIO_WACOM_IV 0x3e
#endif /* _UAPI_SERIO_H */