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c0b20fd9b6
module_hid_driver() makes the code simpler by eliminating boilerplate code. Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
62 lines
1.5 KiB
C
62 lines
1.5 KiB
C
/*
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* HID driver for Xin-Mo devices, currently only the Dual Arcade controller.
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* Fixes the negative axis event values (the devices sends -2) to match the
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* logical axis minimum of the HID report descriptor (the report announces
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* -1). It is needed because hid-input discards out of bounds values.
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* (This module is based on "hid-saitek" and "hid-lg".)
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*
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* Copyright (c) 2013 Olivier Scherler
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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/device.h>
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#include <linux/hid.h>
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include "hid-ids.h"
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/*
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* Fix negative events that are out of bounds.
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*/
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static int xinmo_event(struct hid_device *hdev, struct hid_field *field,
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struct hid_usage *usage, __s32 value)
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{
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switch (usage->code) {
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case ABS_X:
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case ABS_Y:
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case ABS_Z:
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case ABS_RX:
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if (value < -1) {
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input_event(field->hidinput->input, usage->type,
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usage->code, -1);
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return 1;
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}
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break;
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}
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return 0;
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}
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static const struct hid_device_id xinmo_devices[] = {
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{ HID_USB_DEVICE(USB_VENDOR_ID_XIN_MO, USB_DEVICE_ID_XIN_MO_DUAL_ARCADE) },
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{ }
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};
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MODULE_DEVICE_TABLE(hid, xinmo_devices);
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static struct hid_driver xinmo_driver = {
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.name = "xinmo",
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.id_table = xinmo_devices,
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.event = xinmo_event
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};
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module_hid_driver(xinmo_driver);
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MODULE_LICENSE("GPL");
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