[net-next-2.6.git] / drivers / hid / hid-cypress.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) 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/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) {
		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:
	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_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");
Commit	Line	Data
0f221320 JS	1	/*
	2	* HID driver for some cypress "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/hid.h>
	21	#include <linux/input.h>
	22	#include <linux/module.h>
	23
	24	#include "hid-ids.h"
	25
	26	#define CP_RDESC_SWAPPED_MIN_MAX 0x01
	27	#define CP_2WHEEL_MOUSE_HACK 0x02
	28	#define CP_2WHEEL_MOUSE_HACK_ON 0x04
	29
	30	/*
	31	* Some USB barcode readers from cypress have usage min and usage max in
	32	* the wrong order
	33	*/
73e4008d NK	34	static __u8 cp_report_fixup(struct hid_device hdev, __u8 *rdesc,
73e4008d NK	35	unsigned int *rsize)
0f221320 JS	36	{
	37	unsigned long quirks = (unsigned long)hid_get_drvdata(hdev);
	38	unsigned int i;
	39
	40	if (!(quirks & CP_RDESC_SWAPPED_MIN_MAX))
73e4008d	41	return rdesc;
0f221320	42
73e4008d	43	for (i = 0; i < *rsize - 4; i++)
0f221320 JS	44	if (rdesc[i] == 0x29 && rdesc[i + 2] == 0x19) {
	45	__u8 tmp;
	46
	47	rdesc[i] = 0x19;
	48	rdesc[i + 2] = 0x29;
	49	tmp = rdesc[i + 3];
	50	rdesc[i + 3] = rdesc[i + 1];
	51	rdesc[i + 1] = tmp;
	52	}
73e4008d	53	return rdesc;
0f221320 JS	54	}
	55
	56	static int cp_input_mapped(struct hid_device hdev, struct hid_input hi,
	57	struct hid_field field, struct hid_usage usage,
	58	unsigned long *bit, int max)
	59	{
	60	unsigned long quirks = (unsigned long)hid_get_drvdata(hdev);
	61
	62	if (!(quirks & CP_2WHEEL_MOUSE_HACK))
	63	return 0;
	64
	65	if (usage->type == EV_REL && usage->code == REL_WHEEL)
	66	set_bit(REL_HWHEEL, *bit);
	67	if (usage->hid == 0x00090005)
	68	return -1;
	69
	70	return 0;
	71	}
	72
	73	static int cp_event(struct hid_device hdev, struct hid_field field,
	74	struct hid_usage *usage, __s32 value)
	75	{
	76	unsigned long quirks = (unsigned long)hid_get_drvdata(hdev);
	77
	78	if (!(hdev->claimed & HID_CLAIMED_INPUT) \|\| !field->hidinput \|\|
	79	!usage->type \|\| !(quirks & CP_2WHEEL_MOUSE_HACK))
	80	return 0;
	81
	82	if (usage->hid == 0x00090005) {
	83	if (value)
	84	quirks \|= CP_2WHEEL_MOUSE_HACK_ON;
	85	else
	86	quirks &= ~CP_2WHEEL_MOUSE_HACK_ON;
	87	hid_set_drvdata(hdev, (void *)quirks);
	88	return 1;
	89	}
	90
	91	if (usage->code == REL_WHEEL && (quirks & CP_2WHEEL_MOUSE_HACK_ON)) {
	92	struct input_dev *input = field->hidinput->input;
	93
	94	input_event(input, usage->type, REL_HWHEEL, value);
	95	return 1;
	96	}
	97
	98	return 0;
	99	}
	100
	101	static int cp_probe(struct hid_device hdev, const struct hid_device_id id)
	102	{
	103	unsigned long quirks = id->driver_data;
	104	int ret;
	105
	106	hid_set_drvdata(hdev, (void *)quirks);
	107
	108	ret = hid_parse(hdev);
	109	if (ret) {
	110	dev_err(&hdev->dev, "parse failed\n");
	111	goto err_free;
	112	}
	113
93c10132	114	ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
0f221320 JS	115	if (ret) {
	116	dev_err(&hdev->dev, "hw start failed\n");
	117	goto err_free;
	118	}
	119
	120	return 0;
	121	err_free:
	122	return ret;
	123	}
	124
	125	static const struct hid_device_id cp_devices[] = {
	126	{ HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_1),
	127	.driver_data = CP_RDESC_SWAPPED_MIN_MAX },
	128	{ HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_2),
	129	.driver_data = CP_RDESC_SWAPPED_MIN_MAX },
e8d0eab4 JK	130	{ HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_3),
e8d0eab4 JK	131	.driver_data = CP_RDESC_SWAPPED_MIN_MAX },
0f221320 JS	132	{ HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_MOUSE),
	133	.driver_data = CP_2WHEEL_MOUSE_HACK },
	134	{ }
	135	};
	136	MODULE_DEVICE_TABLE(hid, cp_devices);
	137
	138	static struct hid_driver cp_driver = {
	139	.name = "cypress",
	140	.id_table = cp_devices,
	141	.report_fixup = cp_report_fixup,
	142	.input_mapped = cp_input_mapped,
	143	.event = cp_event,
	144	.probe = cp_probe,
	145	};
	146
a24f423b	147	static int __init cp_init(void)
0f221320 JS	148	{
	149	return hid_register_driver(&cp_driver);
	150	}
	151
a24f423b	152	static void __exit cp_exit(void)
0f221320 JS	153	{
	154	hid_unregister_driver(&cp_driver);
	155	}
	156
	157	module_init(cp_init);
	158	module_exit(cp_exit);
	159	MODULE_LICENSE("GPL");