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authorMartyn Welch <martyn.welch@collabora.co.uk>2017-02-14 17:17:56 +0300
committerJiri Kosina <jkosina@suse.cz>2017-03-21 17:03:55 +0300
commitc846fe9ce90a5ab0329de7f08d7523fb58c1251e (patch)
tree23567938bdf66cf682460a158d8bb515be7be493 /drivers/hid/hid-accutouch.c
parent81bbef23db51c0b450d90607fbbc2ad80ee0d43f (diff)
downloadlinux-c846fe9ce90a5ab0329de7f08d7523fb58c1251e.tar.xz
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>
Diffstat (limited to 'drivers/hid/hid-accutouch.c')
-rw-r--r--drivers/hid/hid-accutouch.c52
1 files changed, 52 insertions, 0 deletions
diff --git a/drivers/hid/hid-accutouch.c b/drivers/hid/hid-accutouch.c
new file mode 100644
index 000000000000..4e287160c50a
--- /dev/null
+++ b/drivers/hid/hid-accutouch.c
@@ -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");