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5f66872cbd
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>
54 lines
1.4 KiB
C
54 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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