linux/drivers/hid/hid-cypress.c
Jiri Kosina 2f43f8749e HID: remove Paul Walmsley's copyright from places where it shouldn't be
Paul Walmsley has implemented dynamic quirk handling back in 2007 through
commits:

2eb5dc30eb ("USB HID: encapsulate quirk handling into hid-quirks.c")
8222fbe67c ("USB HID: clarify static quirk handling as squirks")
8cef908235 ("USB HID: add support for dynamically-created quirks")
876b9276b9 ("USB HID: add 'quirks' module parameter")

and as such, his copyright rightly belongs to
drivers/hid/usbhid/hid-quirks.c file.

However when generic HID code has been converted to bus and individual
quirks separated out to individual drivers on the bus, the copyright has
been blindly transfered into all the tiny drivers, which actually don't
contain any of Pauls' copyrighted code.

Remove the copyright from those sub-drivers.

Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Acked-by: Paul Walmsley <paul@pwsan.com>
2012-09-05 10:46:36 +02:00

161 lines
3.9 KiB
C

/*
* HID driver for some cypress "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) 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/hid.h>
#include <linux/input.h>
#include <linux/module.h>
#include "hid-ids.h"
#define CP_RDESC_SWAPPED_MIN_MAX 0x01
#define CP_2WHEEL_MOUSE_HACK 0x02
#define CP_2WHEEL_MOUSE_HACK_ON 0x04
/*
* Some USB barcode readers from cypress have usage min and usage max in
* the wrong order
*/
static __u8 *cp_report_fixup(struct hid_device *hdev, __u8 *rdesc,
unsigned int *rsize)
{
unsigned long quirks = (unsigned long)hid_get_drvdata(hdev);
unsigned int i;
if (!(quirks & CP_RDESC_SWAPPED_MIN_MAX))
return rdesc;
for (i = 0; i < *rsize - 4; i++)
if (rdesc[i] == 0x29 && rdesc[i + 2] == 0x19) {
__u8 tmp;
rdesc[i] = 0x19;
rdesc[i + 2] = 0x29;
tmp = rdesc[i + 3];
rdesc[i + 3] = rdesc[i + 1];
rdesc[i + 1] = tmp;
}
return rdesc;
}
static int cp_input_mapped(struct hid_device *hdev, struct hid_input *hi,
struct hid_field *field, struct hid_usage *usage,
unsigned long **bit, int *max)
{
unsigned long quirks = (unsigned long)hid_get_drvdata(hdev);
if (!(quirks & CP_2WHEEL_MOUSE_HACK))
return 0;
if (usage->type == EV_REL && usage->code == REL_WHEEL)
set_bit(REL_HWHEEL, *bit);
if (usage->hid == 0x00090005)
return -1;
return 0;
}
static int cp_event(struct hid_device *hdev, struct hid_field *field,
struct hid_usage *usage, __s32 value)
{
unsigned long quirks = (unsigned long)hid_get_drvdata(hdev);
if (!(hdev->claimed & HID_CLAIMED_INPUT) || !field->hidinput ||
!usage->type || !(quirks & CP_2WHEEL_MOUSE_HACK))
return 0;
if (usage->hid == 0x00090005) {
if (value)
quirks |= CP_2WHEEL_MOUSE_HACK_ON;
else
quirks &= ~CP_2WHEEL_MOUSE_HACK_ON;
hid_set_drvdata(hdev, (void *)quirks);
return 1;
}
if (usage->code == REL_WHEEL && (quirks & CP_2WHEEL_MOUSE_HACK_ON)) {
struct input_dev *input = field->hidinput->input;
input_event(input, usage->type, REL_HWHEEL, value);
return 1;
}
return 0;
}
static int cp_probe(struct hid_device *hdev, const struct hid_device_id *id)
{
unsigned long quirks = id->driver_data;
int ret;
hid_set_drvdata(hdev, (void *)quirks);
ret = hid_parse(hdev);
if (ret) {
hid_err(hdev, "parse failed\n");
goto err_free;
}
ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
if (ret) {
hid_err(hdev, "hw start failed\n");
goto err_free;
}
return 0;
err_free:
return ret;
}
static const struct hid_device_id cp_devices[] = {
{ HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_1),
.driver_data = CP_RDESC_SWAPPED_MIN_MAX },
{ HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_2),
.driver_data = CP_RDESC_SWAPPED_MIN_MAX },
{ HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_3),
.driver_data = CP_RDESC_SWAPPED_MIN_MAX },
{ HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_4),
.driver_data = CP_RDESC_SWAPPED_MIN_MAX },
{ HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_MOUSE),
.driver_data = CP_2WHEEL_MOUSE_HACK },
{ }
};
MODULE_DEVICE_TABLE(hid, cp_devices);
static struct hid_driver cp_driver = {
.name = "cypress",
.id_table = cp_devices,
.report_fixup = cp_report_fixup,
.input_mapped = cp_input_mapped,
.event = cp_event,
.probe = cp_probe,
};
static int __init cp_init(void)
{
return hid_register_driver(&cp_driver);
}
static void __exit cp_exit(void)
{
hid_unregister_driver(&cp_driver);
}
module_init(cp_init);
module_exit(cp_exit);
MODULE_LICENSE("GPL");