[deliverable/linux.git] / drivers / hid / hid-gaff.c

/*
 *  Force feedback support for GreenAsia (Product ID 0x12) based devices
 *
 *  The devices are distributed under various names and the same USB device ID
 *  can be used in many game controllers.
 *
 *
 *  0e8f:0012 "GreenAsia Inc.    USB Joystick     "
 *   - tested with MANTA Warior MM816 and SpeedLink Strike2 SL-6635.
 *
 *  Copyright (c) 2008 Lukasz Lubojanski <lukasz@lubojanski.info>
 */

/*
 * 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.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 */

#include <linux/input.h>
#include <linux/slab.h>
#include <linux/usb.h>
#include <linux/hid.h>
#include <linux/module.h>
#include "hid-ids.h"

#ifdef CONFIG_GREENASIA_FF
#include "usbhid/usbhid.h"

struct gaff_device {
	struct hid_report *report;
};

static int hid_gaff_play(struct input_dev *dev, void *data,
			 struct ff_effect *effect)
{
	struct hid_device *hid = input_get_drvdata(dev);
	struct gaff_device *gaff = data;
	int left, right;

	left = effect->u.rumble.strong_magnitude;
	right = effect->u.rumble.weak_magnitude;

	dbg_hid("called with 0x%04x 0x%04x", left, right);

	left = left * 0xfe / 0xffff;
	right = right * 0xfe / 0xffff;

	gaff->report->field[0]->value[0] = 0x51;
	gaff->report->field[0]->value[1] = 0x0;
	gaff->report->field[0]->value[2] = right;
	gaff->report->field[0]->value[3] = 0;
	gaff->report->field[0]->value[4] = left;
	gaff->report->field[0]->value[5] = 0;
	dbg_hid("running with 0x%02x 0x%02x", left, right);
	usbhid_submit_report(hid, gaff->report, USB_DIR_OUT);

	gaff->report->field[0]->value[0] = 0xfa;
	gaff->report->field[0]->value[1] = 0xfe;
	gaff->report->field[0]->value[2] = 0x0;
	gaff->report->field[0]->value[4] = 0x0;

	usbhid_submit_report(hid, gaff->report, USB_DIR_OUT);

	return 0;
}

static int gaff_init(struct hid_device *hid)
{
	struct gaff_device *gaff;
	struct hid_report *report;
	struct hid_input *hidinput = list_entry(hid->inputs.next,
						struct hid_input, list);
	struct list_head *report_list =
			&hid->report_enum[HID_OUTPUT_REPORT].report_list;
	struct list_head *report_ptr = report_list;
	struct input_dev *dev = hidinput->input;
	int error;

	if (list_empty(report_list)) {
		hid_err(hid, "no output reports found\n");
		return -ENODEV;
	}

	report_ptr = report_ptr->next;

	report = list_entry(report_ptr, struct hid_report, list);
	if (report->maxfield < 1) {
		hid_err(hid, "no fields in the report\n");
		return -ENODEV;
	}

	if (report->field[0]->report_count < 6) {
		hid_err(hid, "not enough values in the field\n");
		return -ENODEV;
	}

	gaff = kzalloc(sizeof(struct gaff_device), GFP_KERNEL);
	if (!gaff)
		return -ENOMEM;

	set_bit(FF_RUMBLE, dev->ffbit);

	error = input_ff_create_memless(dev, gaff, hid_gaff_play);
	if (error) {
		kfree(gaff);
		return error;
	}

	gaff->report = report;
	gaff->report->field[0]->value[0] = 0x51;
	gaff->report->field[0]->value[1] = 0x00;
	gaff->report->field[0]->value[2] = 0x00;
	gaff->report->field[0]->value[3] = 0x00;
	usbhid_submit_report(hid, gaff->report, USB_DIR_OUT);

	gaff->report->field[0]->value[0] = 0xfa;
	gaff->report->field[0]->value[1] = 0xfe;

	usbhid_submit_report(hid, gaff->report, USB_DIR_OUT);

	hid_info(hid, "Force Feedback for GreenAsia 0x12 devices by Lukasz Lubojanski <lukasz@lubojanski.info>\n");

	return 0;
}
#else
static inline int gaff_init(struct hid_device *hdev)
{
	return 0;
}
#endif

static int ga_probe(struct hid_device *hdev, const struct hid_device_id *id)
{
	int ret;

	dev_dbg(&hdev->dev, "Greenasia HID hardware probe...");

	ret = hid_parse(hdev);
	if (ret) {
		hid_err(hdev, "parse failed\n");
		goto err;
	}

	ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT & ~HID_CONNECT_FF);
	if (ret) {
		hid_err(hdev, "hw start failed\n");
		goto err;
	}

	gaff_init(hdev);

	return 0;
err:
	return ret;
}

static const struct hid_device_id ga_devices[] = {
	{ HID_USB_DEVICE(USB_VENDOR_ID_GREENASIA, 0x0012),  },
	{ }
};
MODULE_DEVICE_TABLE(hid, ga_devices);

static struct hid_driver ga_driver = {
	.name = "greenasia",
	.id_table = ga_devices,
	.probe = ga_probe,
};

static int __init ga_init(void)
{
	return hid_register_driver(&ga_driver);
}

static void __exit ga_exit(void)
{
	hid_unregister_driver(&ga_driver);
}

module_init(ga_init);
module_exit(ga_exit);
MODULE_LICENSE("GPL");
Commit	Line	Data
42859e0b LL	1	/*
	2	* Force feedback support for GreenAsia (Product ID 0x12) based devices
	3	*
	4	* The devices are distributed under various names and the same USB device ID
	5	* can be used in many game controllers.
	6	*
	7	*
	8	* 0e8f:0012 "GreenAsia Inc. USB Joystick "
	9	* - tested with MANTA Warior MM816 and SpeedLink Strike2 SL-6635.
	10	*
	11	* Copyright (c) 2008 Lukasz Lubojanski <lukasz@lubojanski.info>
	12	*/
	13
	14	/*
	15	* This program is free software; you can redistribute it and/or modify
	16	* it under the terms of the GNU General Public License as published by
	17	* the Free Software Foundation; either version 2 of the License, or
	18	* (at your option) any later version.
	19	*
	20	* This program is distributed in the hope that it will be useful,
	21	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	22	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	23	* GNU General Public License for more details.
	24	*
	25	* You should have received a copy of the GNU General Public License
	26	* along with this program; if not, write to the Free Software
	27	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	28	*/
	29
	30	#include <linux/input.h>
5a0e3ad6	31	#include <linux/slab.h>
42859e0b LL	32	#include <linux/usb.h>
42859e0b LL	33	#include <linux/hid.h>
8f86a2c3	34	#include <linux/module.h>
42859e0b	35	#include "hid-ids.h"
0f6f4319 JK	36
0f6f4319 JK	37	#ifdef CONFIG_GREENASIA_FF
42859e0b LL	38	#include "usbhid/usbhid.h"
	39
	40	struct gaff_device {
	41	struct hid_report *report;
	42	};
	43
	44	static int hid_gaff_play(struct input_dev dev, void data,
	45	struct ff_effect *effect)
	46	{
	47	struct hid_device *hid = input_get_drvdata(dev);
	48	struct gaff_device *gaff = data;
	49	int left, right;
	50
	51	left = effect->u.rumble.strong_magnitude;
	52	right = effect->u.rumble.weak_magnitude;
	53
	54	dbg_hid("called with 0x%04x 0x%04x", left, right);
	55
	56	left = left * 0xfe / 0xffff;
	57	right = right * 0xfe / 0xffff;
	58
	59	gaff->report->field[0]->value[0] = 0x51;
	60	gaff->report->field[0]->value[1] = 0x0;
	61	gaff->report->field[0]->value[2] = right;
	62	gaff->report->field[0]->value[3] = 0;
	63	gaff->report->field[0]->value[4] = left;
	64	gaff->report->field[0]->value[5] = 0;
	65	dbg_hid("running with 0x%02x 0x%02x", left, right);
	66	usbhid_submit_report(hid, gaff->report, USB_DIR_OUT);
	67
	68	gaff->report->field[0]->value[0] = 0xfa;
	69	gaff->report->field[0]->value[1] = 0xfe;
	70	gaff->report->field[0]->value[2] = 0x0;
	71	gaff->report->field[0]->value[4] = 0x0;
	72
	73	usbhid_submit_report(hid, gaff->report, USB_DIR_OUT);
	74
	75	return 0;
	76	}
	77
	78	static int gaff_init(struct hid_device *hid)
	79	{
	80	struct gaff_device *gaff;
	81	struct hid_report *report;
	82	struct hid_input *hidinput = list_entry(hid->inputs.next,
	83	struct hid_input, list);
	84	struct list_head *report_list =
	85	&hid->report_enum[HID_OUTPUT_REPORT].report_list;
	86	struct list_head *report_ptr = report_list;
	87	struct input_dev *dev = hidinput->input;
	88	int error;
	89
	90	if (list_empty(report_list)) {
4291ee30	91	hid_err(hid, "no output reports found\n");
42859e0b LL	92	return -ENODEV;
	93	}
	94
	95	report_ptr = report_ptr->next;
	96
	97	report = list_entry(report_ptr, struct hid_report, list);
	98	if (report->maxfield < 1) {
4291ee30	99	hid_err(hid, "no fields in the report\n");
42859e0b LL	100	return -ENODEV;
	101	}
	102
	103	if (report->field[0]->report_count < 6) {
4291ee30	104	hid_err(hid, "not enough values in the field\n");
42859e0b LL	105	return -ENODEV;
	106	}
	107
	108	gaff = kzalloc(sizeof(struct gaff_device), GFP_KERNEL);
	109	if (!gaff)
	110	return -ENOMEM;
	111
	112	set_bit(FF_RUMBLE, dev->ffbit);
	113
	114	error = input_ff_create_memless(dev, gaff, hid_gaff_play);
	115	if (error) {
	116	kfree(gaff);
	117	return error;
	118	}
	119
	120	gaff->report = report;
	121	gaff->report->field[0]->value[0] = 0x51;
	122	gaff->report->field[0]->value[1] = 0x00;
	123	gaff->report->field[0]->value[2] = 0x00;
	124	gaff->report->field[0]->value[3] = 0x00;
	125	usbhid_submit_report(hid, gaff->report, USB_DIR_OUT);
	126
	127	gaff->report->field[0]->value[0] = 0xfa;
	128	gaff->report->field[0]->value[1] = 0xfe;
	129
	130	usbhid_submit_report(hid, gaff->report, USB_DIR_OUT);
	131
4291ee30	132	hid_info(hid, "Force Feedback for GreenAsia 0x12 devices by Lukasz Lubojanski <lukasz@lubojanski.info>\n");
42859e0b LL	133
	134	return 0;
	135	}
0f6f4319 JK	136	#else
	137	static inline int gaff_init(struct hid_device *hdev)
	138	{
	139	return 0;
	140	}
	141	#endif
42859e0b LL	142
	143	static int ga_probe(struct hid_device hdev, const struct hid_device_id id)
	144	{
	145	int ret;
	146
	147	dev_dbg(&hdev->dev, "Greenasia HID hardware probe...");
	148
	149	ret = hid_parse(hdev);
	150	if (ret) {
4291ee30	151	hid_err(hdev, "parse failed\n");
42859e0b LL	152	goto err;
	153	}
	154
	155	ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT & ~HID_CONNECT_FF);
	156	if (ret) {
4291ee30	157	hid_err(hdev, "hw start failed\n");
42859e0b LL	158	goto err;
	159	}
	160
	161	gaff_init(hdev);
	162
	163	return 0;
	164	err:
	165	return ret;
	166	}
	167
	168	static const struct hid_device_id ga_devices[] = {
	169	{ HID_USB_DEVICE(USB_VENDOR_ID_GREENASIA, 0x0012), },
	170	{ }
	171	};
	172	MODULE_DEVICE_TABLE(hid, ga_devices);
	173
	174	static struct hid_driver ga_driver = {
	175	.name = "greenasia",
	176	.id_table = ga_devices,
	177	.probe = ga_probe,
	178	};
	179
	180	static int __init ga_init(void)
	181	{
	182	return hid_register_driver(&ga_driver);
	183	}
	184
	185	static void __exit ga_exit(void)
	186	{
	187	hid_unregister_driver(&ga_driver);
	188	}
	189
	190	module_init(ga_init);
	191	module_exit(ga_exit);
	192	MODULE_LICENSE("GPL");