163 lines
3.5 KiB
C
163 lines
3.5 KiB
C
/*
|
|
* HID driver for some a4tech "special" devices
|
|
*
|
|
* Copyright (c) 1999 Andreas Gal
|
|
* Copyright (c) 2000-2005 Vojtech Pavlik <vojtech@suse.cz>
|
|
* Copyright (c) 2005 Michael Haboustak <mike-@cinci.rr.com> for Concept2, Inc
|
|
* Copyright (c) 2006-2007 Jiri Kosina
|
|
* Copyright (c) 2007 Paul Walmsley
|
|
* Copyright (c) 2008 Jiri Slaby
|
|
*/
|
|
|
|
/*
|
|
* 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/device.h>
|
|
#include <linux/input.h>
|
|
#include <linux/hid.h>
|
|
#include <linux/module.h>
|
|
|
|
#include "hid-ids.h"
|
|
|
|
#define A4_2WHEEL_MOUSE_HACK_7 0x01
|
|
#define A4_2WHEEL_MOUSE_HACK_B8 0x02
|
|
|
|
struct a4tech_sc {
|
|
unsigned long quirks;
|
|
unsigned int hw_wheel;
|
|
__s32 delayed_value;
|
|
};
|
|
|
|
static int a4_input_mapped(struct hid_device *hdev, struct hid_input *hi,
|
|
struct hid_field *field, struct hid_usage *usage,
|
|
unsigned long **bit, int *max)
|
|
{
|
|
struct a4tech_sc *a4 = hid_get_drvdata(hdev);
|
|
|
|
if (usage->type == EV_REL && usage->code == REL_WHEEL)
|
|
set_bit(REL_HWHEEL, *bit);
|
|
|
|
if ((a4->quirks & A4_2WHEEL_MOUSE_HACK_7) && usage->hid == 0x00090007)
|
|
return -1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int a4_event(struct hid_device *hdev, struct hid_field *field,
|
|
struct hid_usage *usage, __s32 value)
|
|
{
|
|
struct a4tech_sc *a4 = hid_get_drvdata(hdev);
|
|
struct input_dev *input;
|
|
|
|
if (!(hdev->claimed & HID_CLAIMED_INPUT) || !field->hidinput ||
|
|
!usage->type)
|
|
return 0;
|
|
|
|
input = field->hidinput->input;
|
|
|
|
if (a4->quirks & A4_2WHEEL_MOUSE_HACK_B8) {
|
|
if (usage->type == EV_REL && usage->code == REL_WHEEL) {
|
|
a4->delayed_value = value;
|
|
return 1;
|
|
}
|
|
|
|
if (usage->hid == 0x000100b8) {
|
|
input_event(input, EV_REL, value ? REL_HWHEEL :
|
|
REL_WHEEL, a4->delayed_value);
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
if ((a4->quirks & A4_2WHEEL_MOUSE_HACK_7) && usage->hid == 0x00090007) {
|
|
a4->hw_wheel = !!value;
|
|
return 1;
|
|
}
|
|
|
|
if (usage->code == REL_WHEEL && a4->hw_wheel) {
|
|
input_event(input, usage->type, REL_HWHEEL, value);
|
|
return 1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int a4_probe(struct hid_device *hdev, const struct hid_device_id *id)
|
|
{
|
|
struct a4tech_sc *a4;
|
|
int ret;
|
|
|
|
a4 = kzalloc(sizeof(*a4), GFP_KERNEL);
|
|
if (a4 == NULL) {
|
|
dev_err(&hdev->dev, "can't alloc device descriptor\n");
|
|
ret = -ENOMEM;
|
|
goto err_free;
|
|
}
|
|
|
|
a4->quirks = id->driver_data;
|
|
|
|
hid_set_drvdata(hdev, a4);
|
|
|
|
ret = hid_parse(hdev);
|
|
if (ret) {
|
|
dev_err(&hdev->dev, "parse failed\n");
|
|
goto err_free;
|
|
}
|
|
|
|
ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
|
|
if (ret) {
|
|
dev_err(&hdev->dev, "hw start failed\n");
|
|
goto err_free;
|
|
}
|
|
|
|
return 0;
|
|
err_free:
|
|
kfree(a4);
|
|
return ret;
|
|
}
|
|
|
|
static void a4_remove(struct hid_device *hdev)
|
|
{
|
|
struct a4tech_sc *a4 = hid_get_drvdata(hdev);
|
|
|
|
hid_hw_stop(hdev);
|
|
kfree(a4);
|
|
}
|
|
|
|
static const struct hid_device_id a4_devices[] = {
|
|
{ HID_USB_DEVICE(USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_WCP32PU),
|
|
.driver_data = A4_2WHEEL_MOUSE_HACK_7 },
|
|
{ HID_USB_DEVICE(USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_X5_005D),
|
|
.driver_data = A4_2WHEEL_MOUSE_HACK_B8 },
|
|
{ }
|
|
};
|
|
MODULE_DEVICE_TABLE(hid, a4_devices);
|
|
|
|
static struct hid_driver a4_driver = {
|
|
.name = "a4tech",
|
|
.id_table = a4_devices,
|
|
.input_mapped = a4_input_mapped,
|
|
.event = a4_event,
|
|
.probe = a4_probe,
|
|
.remove = a4_remove,
|
|
};
|
|
|
|
static int a4_init(void)
|
|
{
|
|
return hid_register_driver(&a4_driver);
|
|
}
|
|
|
|
static void a4_exit(void)
|
|
{
|
|
hid_unregister_driver(&a4_driver);
|
|
}
|
|
|
|
module_init(a4_init);
|
|
module_exit(a4_exit);
|
|
MODULE_LICENSE("GPL");
|
|
|
|
HID_COMPAT_LOAD_DRIVER(a4tech);
|