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HID: Accutouch: Add driver for ELO Accutouch 2216 USB Touchscreens 

The Accutouch 2216 is reporting BTN_LEFT/BTN_MOUSE rather than BTM_TOUCH
in it's capabilities, which is what user space expects a touchscreen
device to report. This is causing udev to consider the device to be a
"VMware's USB mouse" rather than as a touchscreen, which results in a
mouse cursor being displayed in Weston.

This patch adds a special driver for the device to correct the
capabilities reported.

Signed-off-by: Martyn Welch <martyn.welch@collabora.co.uk>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
This commit is contained in:
Martyn Welch 2017-02-14 14:17:56 +00:00 committed by Jiri Kosina
parent 81bbef23db
commit c846fe9ce9
5 changed files with 67 additions and 0 deletions
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12
drivers/hid/Kconfig
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@ -98,6 +98,18 @@ config HID_A4TECH
---help---
Support for A4 tech X5 and WOP-35 / Trust 450L mice.
config HID_ACCUTOUCH
tristate "Accutouch touch device"
depends on USB_HID
---help---
This selects a driver for the Accutouch 2216 touch controller.
The driver works around a problem in the reported device capabilities
which causes userspace to detect the device as a mouse rather than
a touchscreen.
Say Y here if you have a Accutouch 2216 touch controller.
config HID_ACRUX
tristate "ACRUX game controller support"
depends on HID

1
drivers/hid/Makefile
View File

@ -21,6 +21,7 @@ hid-wiimote-y := hid-wiimote-core.o hid-wiimote-modules.o
hid-wiimote-$(CONFIG_DEBUG_FS) += hid-wiimote-debug.o
obj-$(CONFIG_HID_A4TECH) += hid-a4tech.o
obj-$(CONFIG_HID_ACCUTOUCH) += hid-accutouch.o
obj-$(CONFIG_HID_ALPS) += hid-alps.o
obj-$(CONFIG_HID_ACRUX) += hid-axff.o
obj-$(CONFIG_HID_APPLE) += hid-apple.o

52
drivers/hid/hid-accutouch.c Normal file
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@ -0,0 +1,52 @@
/*
* HID driver for Elo Accutouch touchscreens
*
* Copyright (c) 2016, Collabora Ltd.
* Copyright (c) 2016, General Electric Company
*
* based on hid-penmount.c
* Copyright (c) 2014 Christian Gmeiner <christian.gmeiner <at> gmail.com>
*/
/*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the Free
* Software Foundation; either version 2 of the License, or (at your option)
* any later version.
*/
#include <linux/hid.h>
#include <linux/module.h>
#include "hid-ids.h"
static int accutouch_input_mapping(struct hid_device *hdev,
struct hid_input *hi,
struct hid_field *field,
struct hid_usage *usage,
unsigned long **bit, int *max)
{
if ((usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON) {
hid_map_usage(hi, usage, bit, max, EV_KEY, BTN_TOUCH);
return 1;
}
return 0;
}
static const struct hid_device_id accutouch_devices[] = {
{ HID_USB_DEVICE(USB_VENDOR_ID_ELO, USB_DEVICE_ID_ELO_ACCUTOUCH_2216) },
{ }
};
MODULE_DEVICE_TABLE(hid, accutouch_devices);
static struct hid_driver accutouch_driver = {
.name = "hid-accutouch",
.id_table = accutouch_devices,
.input_mapping = accutouch_input_mapping,
};
module_hid_driver(accutouch_driver);
MODULE_AUTHOR("Martyn Welch <martyn.welch@collabora.co.uk");
MODULE_DESCRIPTION("Elo Accutouch HID TouchScreen driver");
MODULE_LICENSE("GPL");

1
drivers/hid/hid-core.c
View File

@ -1891,6 +1891,7 @@ static const struct hid_device_id hid_have_special_driver[] = {
{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ELECOM, USB_DEVICE_ID_ELECOM_BM084) },
{ HID_USB_DEVICE(USB_VENDOR_ID_ELO, 0x0009) },
{ HID_USB_DEVICE(USB_VENDOR_ID_ELO, 0x0030) },
{ HID_USB_DEVICE(USB_VENDOR_ID_ELO, USB_DEVICE_ID_ELO_ACCUTOUCH_2216) },
{ HID_USB_DEVICE(USB_VENDOR_ID_EMS, USB_DEVICE_ID_EMS_TRIO_LINKER_PLUS_II) },
{ HID_USB_DEVICE(USB_VENDOR_ID_EZKEY, USB_DEVICE_ID_BTC_8193) },
{ HID_USB_DEVICE(USB_VENDOR_ID_GAMERON, USB_DEVICE_ID_GAMERON_DUAL_PSX_ADAPTOR) },

1
drivers/hid/hid-ids.h
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@ -363,6 +363,7 @@
#define USB_VENDOR_ID_ELO 0x04E7
#define USB_DEVICE_ID_ELO_TS2515 0x0022
#define USB_DEVICE_ID_ELO_TS2700 0x0020
#define USB_DEVICE_ID_ELO_ACCUTOUCH_2216 0x0050
#define USB_VENDOR_ID_EMS 0x2006
#define USB_DEVICE_ID_EMS_TRIO_LINKER_PLUS_II 0x0118