From ffe51d0d8abce3139a970c640ed48e73e9c360bb Mon Sep 17 00:00:00 2001 From: Christian Gmeiner Date: Wed, 3 Sep 2014 10:33:53 +0200 Subject: HID: add support for PenMount HID TouchScreen Driver This patch adds a seperate hid-penmount driver to work around an issue with the HID report descriptor. The descriptor does not contain the ContactID usage and as result the touchscreen is represented as normal mouse to the system. This driver maps the button 0 emitted by the touchscreen to BTN_TOUCH. This makes it possible to use touch events in userspace. Signed-off-by: Christian Gmeiner Reviewed-by: Benjamin Tissoires Signed-off-by: Jiri Kosina --- drivers/hid/hid-penmount.c | 49 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 49 insertions(+) create mode 100644 drivers/hid/hid-penmount.c (limited to 'drivers/hid/hid-penmount.c') diff --git a/drivers/hid/hid-penmount.c b/drivers/hid/hid-penmount.c new file mode 100644 index 000000000000..c11dce85cd18 --- /dev/null +++ b/drivers/hid/hid-penmount.c @@ -0,0 +1,49 @@ +/* + * HID driver for PenMount touchscreens + * + * Copyright (c) 2014 Christian Gmeiner gmail.com> + * + * based on hid-penmount copyrighted by + * PenMount Touch Solutions seed.net.tw> + */ + +/* + * 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 +#include +#include "hid-ids.h" + +static int penmount_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 penmount_devices[] = { + { HID_USB_DEVICE(USB_VENDOR_ID_PENMOUNT, USB_DEVICE_ID_PENMOUNT_6000) }, + { } +}; +MODULE_DEVICE_TABLE(hid, penmount_devices); + +static struct hid_driver penmount_driver = { + .name = "hid-penmount", + .id_table = penmount_devices, + .input_mapping = penmount_input_mapping, +}; + +module_hid_driver(penmount_driver); + +MODULE_AUTHOR("Christian Gmeiner "); +MODULE_DESCRIPTION("PenMount HID TouchScreen driver"); +MODULE_LICENSE("GPL"); -- cgit v1.2.2