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

/*
 * Force feedback support for ACRUX game controllers
 *
 * From what I have gathered, these devices are mass produced in China
 * by several vendors. They often share the same design as the original
 * Xbox 360 controller.
 *
 * 1a34:0802 "ACRUX USB GAMEPAD 8116"
 *  - tested with a EXEQ EQ-PCU-02090 game controller.
 *
 * Copyright (c) 2010 Sergei Kolzun <x0r@dv-life.ru>
 */

/*
 * 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 "hid-ids.h"

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

struct axff_device {
	struct hid_report *report;
};

static int axff_play(struct input_dev *dev, void *data, struct ff_effect *effect)
{
	struct hid_device *hid = input_get_drvdata(dev);
	struct axff_device *axff = 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 * 0xff / 0xffff;
	right = right * 0xff / 0xffff;

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

	return 0;
}

static int axff_init(struct hid_device *hid)
{
	struct axff_device *axff;
	struct hid_report *report;
	struct hid_input *hidinput = list_first_entry(&hid->inputs, struct hid_input, list);
	struct list_head *report_list =&hid->report_enum[HID_OUTPUT_REPORT].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 = list_first_entry(report_list, struct hid_report, list);

	if (report->maxfield < 4) {
		hid_err(hid, "no fields in the report: %d\n", report->maxfield);
		return -ENODEV;
	}

	axff = kzalloc(sizeof(struct axff_device), GFP_KERNEL);
	if (!axff)
		return -ENOMEM;

	set_bit(FF_RUMBLE, dev->ffbit);

	error = input_ff_create_memless(dev, axff, axff_play);
	if (error)
		goto err_free_mem;

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

	hid_info(hid, "Force Feedback for ACRUX game controllers by Sergei Kolzun<x0r@dv-life.ru>\n");

	return 0;

err_free_mem:
	kfree(axff);
	return error;
}
#else
static inline int axff_init(struct hid_device *hid)
{
	return 0;
}
#endif

static int ax_probe(struct hid_device *hdev, const struct hid_device_id *id)
{
	int error;

	dev_dbg(&hdev->dev, "ACRUX HID hardware probe...\n");

	error = hid_parse(hdev);
	if (error) {
		hid_err(hdev, "parse failed\n");
		return error;
	}

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

	error = axff_init(hdev);
	if (error) {
		/*
		 * Do not fail device initialization completely as device
		 * may still be partially operable, just warn.
		 */
		hid_warn(hdev,
			 "Failed to enable force feedback support, error: %d\n",
			 error);
	}

	/*
	 * We need to start polling device right away, otherwise
	 * it will go into a coma.
	 */
	error = hid_hw_open(hdev);
	if (error) {
		dev_err(&hdev->dev, "hw open failed\n");
		return error;
	}

	return 0;
}

static void ax_remove(struct hid_device *hdev)
{
	hid_hw_close(hdev);
	hid_hw_stop(hdev);
}

static const struct hid_device_id ax_devices[] = {
	{ HID_USB_DEVICE(USB_VENDOR_ID_ACRUX, 0x0802), },
	{ }
};
MODULE_DEVICE_TABLE(hid, ax_devices);

static struct hid_driver ax_driver = {
	.name		= "acrux",
	.id_table	= ax_devices,
	.probe		= ax_probe,
	.remove		= ax_remove,
};

static int __init ax_init(void)
{
	return hid_register_driver(&ax_driver);
}

static void __exit ax_exit(void)
{
	hid_unregister_driver(&ax_driver);
}

module_init(ax_init);
module_exit(ax_exit);

MODULE_AUTHOR("Sergei Kolzun");
MODULE_DESCRIPTION("Force feedback support for ACRUX game controllers");
MODULE_LICENSE("GPL");
Commit	Line	Data
c0dbcc33 SK	1	/*
	2	* Force feedback support for ACRUX game controllers
	3	*
	4	* From what I have gathered, these devices are mass produced in China
	5	* by several vendors. They often share the same design as the original
	6	* Xbox 360 controller.
	7	*
	8	* 1a34:0802 "ACRUX USB GAMEPAD 8116"
	9	* - tested with a EXEQ EQ-PCU-02090 game controller.
	10	*
	11	* Copyright (c) 2010 Sergei Kolzun <x0r@dv-life.ru>
	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>
	31	#include <linux/slab.h>
	32	#include <linux/usb.h>
	33	#include <linux/hid.h>
	34
	35	#include "hid-ids.h"
0ae43810 DT	36
0ae43810 DT	37	#ifdef CONFIG_HID_ACRUX_FF
c0dbcc33 SK	38	#include "usbhid/usbhid.h"
	39
	40	struct axff_device {
	41	struct hid_report *report;
	42	};
	43
	44	static int axff_play(struct input_dev dev, void data, struct ff_effect *effect)
	45	{
	46	struct hid_device *hid = input_get_drvdata(dev);
	47	struct axff_device *axff = data;
	48	int left, right;
	49
	50	left = effect->u.rumble.strong_magnitude;
	51	right = effect->u.rumble.weak_magnitude;
	52
	53	dbg_hid("called with 0x%04x 0x%04x", left, right);
	54
	55	left = left * 0xff / 0xffff;
	56	right = right * 0xff / 0xffff;
	57
	58	axff->report->field[0]->value[0] = left;
	59	axff->report->field[1]->value[0] = right;
	60	axff->report->field[2]->value[0] = left;
	61	axff->report->field[3]->value[0] = right;
	62	dbg_hid("running with 0x%02x 0x%02x", left, right);
	63	usbhid_submit_report(hid, axff->report, USB_DIR_OUT);
	64
	65	return 0;
	66	}
	67
	68	static int axff_init(struct hid_device *hid)
	69	{
	70	struct axff_device *axff;
	71	struct hid_report *report;
	72	struct hid_input *hidinput = list_first_entry(&hid->inputs, struct hid_input, list);
	73	struct list_head *report_list =&hid->report_enum[HID_OUTPUT_REPORT].report_list;
	74	struct input_dev *dev = hidinput->input;
	75	int error;
	76
	77	if (list_empty(report_list)) {
4291ee30	78	hid_err(hid, "no output reports found\n");
c0dbcc33 SK	79	return -ENODEV;
	80	}
	81
	82	report = list_first_entry(report_list, struct hid_report, list);
	83
	84	if (report->maxfield < 4) {
4291ee30	85	hid_err(hid, "no fields in the report: %d\n", report->maxfield);
c0dbcc33 SK	86	return -ENODEV;
	87	}
	88
	89	axff = kzalloc(sizeof(struct axff_device), GFP_KERNEL);
	90	if (!axff)
	91	return -ENOMEM;
	92
	93	set_bit(FF_RUMBLE, dev->ffbit);
	94
	95	error = input_ff_create_memless(dev, axff, axff_play);
	96	if (error)
	97	goto err_free_mem;
	98
	99	axff->report = report;
	100	axff->report->field[0]->value[0] = 0x00;
	101	axff->report->field[1]->value[0] = 0x00;
	102	axff->report->field[2]->value[0] = 0x00;
	103	axff->report->field[3]->value[0] = 0x00;
	104	usbhid_submit_report(hid, axff->report, USB_DIR_OUT);
	105
4291ee30	106	hid_info(hid, "Force Feedback for ACRUX game controllers by Sergei Kolzun<x0r@dv-life.ru>\n");
c0dbcc33 SK	107
	108	return 0;
	109
	110	err_free_mem:
	111	kfree(axff);
	112	return error;
	113	}
0ae43810 DT	114	#else
	115	static inline int axff_init(struct hid_device *hid)
	116	{
	117	return 0;
	118	}
	119	#endif
c0dbcc33 SK	120
	121	static int ax_probe(struct hid_device hdev, const struct hid_device_id id)
	122	{
	123	int error;
	124
4291ee30	125	dev_dbg(&hdev->dev, "ACRUX HID hardware probe...\n");
c0dbcc33 SK	126
	127	error = hid_parse(hdev);
	128	if (error) {
4291ee30	129	hid_err(hdev, "parse failed\n");
c0dbcc33 SK	130	return error;
	131	}
	132
	133	error = hid_hw_start(hdev, HID_CONNECT_DEFAULT & ~HID_CONNECT_FF);
	134	if (error) {
4291ee30	135	hid_err(hdev, "hw start failed\n");
c0dbcc33 SK	136	return error;
	137	}
	138
	139	error = axff_init(hdev);
	140	if (error) {
	141	/*
	142	* Do not fail device initialization completely as device
	143	* may still be partially operable, just warn.
	144	*/
4291ee30	145	hid_warn(hdev,
c0dbcc33 SK	146	"Failed to enable force feedback support, error: %d\n",
	147	error);
	148	}
	149
0ae43810 DT	150	/*
	151	* We need to start polling device right away, otherwise
	152	* it will go into a coma.
	153	*/
	154	error = hid_hw_open(hdev);
	155	if (error) {
	156	dev_err(&hdev->dev, "hw open failed\n");
	157	return error;
	158	}
	159
c0dbcc33 SK	160	return 0;
	161	}
	162
0ae43810 DT	163	static void ax_remove(struct hid_device *hdev)
	164	{
	165	hid_hw_close(hdev);
	166	hid_hw_stop(hdev);
	167	}
	168
c0dbcc33 SK	169	static const struct hid_device_id ax_devices[] = {
	170	{ HID_USB_DEVICE(USB_VENDOR_ID_ACRUX, 0x0802), },
	171	{ }
	172	};
	173	MODULE_DEVICE_TABLE(hid, ax_devices);
	174
	175	static struct hid_driver ax_driver = {
0ae43810 DT	176	.name = "acrux",
	177	.id_table = ax_devices,
	178	.probe = ax_probe,
	179	.remove = ax_remove,
c0dbcc33 SK	180	};
	181
	182	static int __init ax_init(void)
	183	{
	184	return hid_register_driver(&ax_driver);
	185	}
	186
	187	static void __exit ax_exit(void)
	188	{
	189	hid_unregister_driver(&ax_driver);
	190	}
	191
	192	module_init(ax_init);
	193	module_exit(ax_exit);
	194
	195	MODULE_AUTHOR("Sergei Kolzun");
	196	MODULE_DESCRIPTION("Force feedback support for ACRUX game controllers");
	197	MODULE_LICENSE("GPL");