[net-next-2.6.git] / drivers / hid / hid-a4tech.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 <linux/slab.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 __init a4_init(void)
{
	return hid_register_driver(&a4_driver);
}

static void __exit a4_exit(void)
{
	hid_unregister_driver(&a4_driver);
}

module_init(a4_init);
module_exit(a4_exit);
MODULE_LICENSE("GPL");
Commit	Line	Data
14a21cd4 JS	1	/*
	2	* HID driver for some a4tech "special" devices
	3	*
	4	* Copyright (c) 1999 Andreas Gal
	5	* Copyright (c) 2000-2005 Vojtech Pavlik <vojtech@suse.cz>
	6	* Copyright (c) 2005 Michael Haboustak <mike-@cinci.rr.com> for Concept2, Inc
	7	* Copyright (c) 2006-2007 Jiri Kosina
	8	* Copyright (c) 2007 Paul Walmsley
	9	* Copyright (c) 2008 Jiri Slaby
	10	*/
	11
	12	/*
	13	* This program is free software; you can redistribute it and/or modify it
	14	* under the terms of the GNU General Public License as published by the Free
	15	* Software Foundation; either version 2 of the License, or (at your option)
	16	* any later version.
	17	*/
	18
	19	#include <linux/device.h>
	20	#include <linux/input.h>
	21	#include <linux/hid.h>
	22	#include <linux/module.h>
5a0e3ad6	23	#include <linux/slab.h>
14a21cd4 JS	24
	25	#include "hid-ids.h"
	26
	27	#define A4_2WHEEL_MOUSE_HACK_7 0x01
	28	#define A4_2WHEEL_MOUSE_HACK_B8 0x02
	29
	30	struct a4tech_sc {
	31	unsigned long quirks;
	32	unsigned int hw_wheel;
	33	__s32 delayed_value;
	34	};
	35
	36	static int a4_input_mapped(struct hid_device hdev, struct hid_input hi,
	37	struct hid_field field, struct hid_usage usage,
	38	unsigned long *bit, int max)
	39	{
	40	struct a4tech_sc *a4 = hid_get_drvdata(hdev);
	41
	42	if (usage->type == EV_REL && usage->code == REL_WHEEL)
	43	set_bit(REL_HWHEEL, *bit);
	44
	45	if ((a4->quirks & A4_2WHEEL_MOUSE_HACK_7) && usage->hid == 0x00090007)
	46	return -1;
	47
	48	return 0;
	49	}
	50
	51	static int a4_event(struct hid_device hdev, struct hid_field field,
	52	struct hid_usage *usage, __s32 value)
	53	{
	54	struct a4tech_sc *a4 = hid_get_drvdata(hdev);
	55	struct input_dev *input;
	56
	57	if (!(hdev->claimed & HID_CLAIMED_INPUT) \|\| !field->hidinput \|\|
	58	!usage->type)
	59	return 0;
	60
	61	input = field->hidinput->input;
	62
	63	if (a4->quirks & A4_2WHEEL_MOUSE_HACK_B8) {
	64	if (usage->type == EV_REL && usage->code == REL_WHEEL) {
	65	a4->delayed_value = value;
	66	return 1;
	67	}
	68
	69	if (usage->hid == 0x000100b8) {
	70	input_event(input, EV_REL, value ? REL_HWHEEL :
	71	REL_WHEEL, a4->delayed_value);
	72	return 1;
	73	}
	74	}
	75
	76	if ((a4->quirks & A4_2WHEEL_MOUSE_HACK_7) && usage->hid == 0x00090007) {
	77	a4->hw_wheel = !!value;
	78	return 1;
	79	}
	80
	81	if (usage->code == REL_WHEEL && a4->hw_wheel) {
	82	input_event(input, usage->type, REL_HWHEEL, value);
	83	return 1;
	84	}
	85
	86	return 0;
	87	}
88
89	static int a4_probe(struct hid_device hdev, const struct hid_device_id id)
90	{
91	struct a4tech_sc *a4;
92	int ret;
93
94	a4 = kzalloc(sizeof(*a4), GFP_KERNEL);
95	if (a4 == NULL) {
96	dev_err(&hdev->dev, "can't alloc device descriptor\n");
97	ret = -ENOMEM;
98	goto err_free;
99	}
100
101	a4->quirks = id->driver_data;
102
103	hid_set_drvdata(hdev, a4);
104
105	ret = hid_parse(hdev);
106	if (ret) {
107	dev_err(&hdev->dev, "parse failed\n");
108	goto err_free;
109	}
110
93c10132	111	ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
14a21cd4 JS	112	if (ret) {
	113	dev_err(&hdev->dev, "hw start failed\n");
	114	goto err_free;
	115	}
	116
	117	return 0;
	118	err_free:
	119	kfree(a4);
	120	return ret;
	121	}
	122
	123	static void a4_remove(struct hid_device *hdev)
	124	{
	125	struct a4tech_sc *a4 = hid_get_drvdata(hdev);
	126
	127	hid_hw_stop(hdev);
	128	kfree(a4);
	129	}
	130
	131	static const struct hid_device_id a4_devices[] = {
	132	{ HID_USB_DEVICE(USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_WCP32PU),
	133	.driver_data = A4_2WHEEL_MOUSE_HACK_7 },
	134	{ HID_USB_DEVICE(USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_X5_005D),
	135	.driver_data = A4_2WHEEL_MOUSE_HACK_B8 },
	136	{ }
	137	};
	138	MODULE_DEVICE_TABLE(hid, a4_devices);
	139
	140	static struct hid_driver a4_driver = {
	141	.name = "a4tech",
	142	.id_table = a4_devices,
	143	.input_mapped = a4_input_mapped,
	144	.event = a4_event,
	145	.probe = a4_probe,
	146	.remove = a4_remove,
	147	};
	148
a24f423b	149	static int __init a4_init(void)
14a21cd4 JS	150	{
	151	return hid_register_driver(&a4_driver);
	152	}
	153
a24f423b	154	static void __exit a4_exit(void)
14a21cd4 JS	155	{
	156	hid_unregister_driver(&a4_driver);
	157	}
	158
	159	module_init(a4_init);
	160	module_exit(a4_exit);
	161	MODULE_LICENSE("GPL");