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PenMount 6000 USB resistive touchscreen controller reports it has three buttons, while in reality it doesn't have any and doesn't support active styli, and only generates touch events. In penmount_input_mapping(), map only the first button (with code 0), ignore the rest. Signed-off-by: Andrew Shadura <andrew.shadura@collabora.co.uk> Tested-by: Christian Gmeiner <c.gmeiner@bachmann.info Signed-off-by: Jiri Kosina <jkosina@suse.cz>
53 lines
1.4 KiB
C
53 lines
1.4 KiB
C
/*
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* HID driver for PenMount touchscreens
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*
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* Copyright (c) 2014 Christian Gmeiner <christian.gmeiner <at> gmail.com>
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*
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* based on hid-penmount copyrighted by
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* PenMount Touch Solutions <penmount <at> seed.net.tw>
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*/
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/*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the Free
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* Software Foundation; either version 2 of the License, or (at your option)
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* any later version.
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*/
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#include <linux/module.h>
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#include <linux/hid.h>
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#include "hid-ids.h"
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static int penmount_input_mapping(struct hid_device *hdev,
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struct hid_input *hi, struct hid_field *field,
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struct hid_usage *usage, unsigned long **bit, int *max)
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{
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if ((usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON) {
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if (((usage->hid - 1) & HID_USAGE) == 0) {
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hid_map_usage(hi, usage, bit, max, EV_KEY, BTN_TOUCH);
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return 1;
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} else {
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return -1;
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}
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}
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return 0;
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}
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static const struct hid_device_id penmount_devices[] = {
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{ HID_USB_DEVICE(USB_VENDOR_ID_PENMOUNT, USB_DEVICE_ID_PENMOUNT_6000) },
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{ }
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};
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MODULE_DEVICE_TABLE(hid, penmount_devices);
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static struct hid_driver penmount_driver = {
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.name = "hid-penmount",
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.id_table = penmount_devices,
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.input_mapping = penmount_input_mapping,
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};
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module_hid_driver(penmount_driver);
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MODULE_AUTHOR("Christian Gmeiner <christian.gmeiner@gmail.com>");
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MODULE_DESCRIPTION("PenMount HID TouchScreen driver");
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MODULE_LICENSE("GPL");
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