[GitHub/LineageOS/android_kernel_samsung_universal7580.git] / drivers / hid / usbhid / hid-tmff.c

/*
 * Force feedback support for various HID compliant devices by ThrustMaster:
 *    ThrustMaster FireStorm Dual Power 2
 * and possibly others whose device ids haven't been added.
 *
 *  Modified to support ThrustMaster devices by Zinx Verituse
 *  on 2003-01-25 from the Logitech force feedback driver,
 *  which is by Johann Deneux.
 *
 *  Copyright (c) 2003 Zinx Verituse <zinx@epicsol.org>
 *  Copyright (c) 2002 Johann Deneux
 */

/*
 * 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>

#undef DEBUG
#include <linux/usb.h>

#include <linux/hid.h>
#include "usbhid.h"

/* Usages for thrustmaster devices I know about */
#define THRUSTMASTER_USAGE_RUMBLE_LR	(HID_UP_GENDESK | 0xbb)


struct tmff_device {
	struct hid_report *report;
	struct hid_field *rumble;
};

/* Changes values from 0 to 0xffff into values from minimum to maximum */
static inline int hid_tmff_scale(unsigned int in, int minimum, int maximum)
{
	int ret;

	ret = (in * (maximum - minimum) / 0xffff) + minimum;
	if (ret < minimum)
		return minimum;
	if (ret > maximum)
		return maximum;
	return ret;
}

static int hid_tmff_play(struct input_dev *dev, void *data, struct ff_effect *effect)
{
	struct hid_device *hid = input_get_drvdata(dev);
	struct tmff_device *tmff = data;
	int left, right;	/* Rumbling */

	left = hid_tmff_scale(effect->u.rumble.weak_magnitude,
		tmff->rumble->logical_minimum, tmff->rumble->logical_maximum);
	right = hid_tmff_scale(effect->u.rumble.strong_magnitude,
		tmff->rumble->logical_minimum, tmff->rumble->logical_maximum);

	tmff->rumble->value[0] = left;
	tmff->rumble->value[1] = right;
	dbg_hid("(left,right)=(%08x, %08x)\n", left, right);
	usbhid_submit_report(hid, tmff->report, USB_DIR_OUT);

	return 0;
}

int hid_tmff_init(struct hid_device *hid)
{
	struct tmff_device *tmff;
	struct list_head *pos;
	struct hid_input *hidinput = list_entry(hid->inputs.next, struct hid_input, list);
	struct input_dev *input_dev = hidinput->input;
	int error;

	tmff = kzalloc(sizeof(struct tmff_device), GFP_KERNEL);
	if (!tmff)
		return -ENOMEM;

	/* Find the report to use */
	__list_for_each(pos, &hid->report_enum[HID_OUTPUT_REPORT].report_list) {
		struct hid_report *report = (struct hid_report *)pos;
		int fieldnum;

		for (fieldnum = 0; fieldnum < report->maxfield; ++fieldnum) {
			struct hid_field *field = report->field[fieldnum];

			if (field->maxusage <= 0)
				continue;

			switch (field->usage[0].hid) {
				case THRUSTMASTER_USAGE_RUMBLE_LR:
					if (field->report_count < 2) {
						warn("ignoring THRUSTMASTER_USAGE_RUMBLE_LR with report_count < 2");
						continue;
					}

					if (field->logical_maximum == field->logical_minimum) {
						warn("ignoring THRUSTMASTER_USAGE_RUMBLE_LR with logical_maximum == logical_minimum");
						continue;
					}

					if (tmff->report && tmff->report != report) {
						warn("ignoring THRUSTMASTER_USAGE_RUMBLE_LR in other report");
						continue;
					}

					if (tmff->rumble && tmff->rumble != field) {
						warn("ignoring duplicate THRUSTMASTER_USAGE_RUMBLE_LR");
						continue;
					}

					tmff->report = report;
					tmff->rumble = field;

					set_bit(FF_RUMBLE, input_dev->ffbit);
					break;

				default:
					warn("ignoring unknown output usage %08x", field->usage[0].hid);
					continue;
			}
		}
	}

	error = input_ff_create_memless(input_dev, tmff, hid_tmff_play);
	if (error) {
		kfree(tmff);
		return error;
	}

	info("Force feedback for ThrustMaster rumble pad devices by Zinx Verituse <zinx@epicsol.org>");

	return 0;
}
Commit	Line	Data
1da177e4 LT	1	/*
	2	* Force feedback support for various HID compliant devices by ThrustMaster:
	3	* ThrustMaster FireStorm Dual Power 2
	4	* and possibly others whose device ids haven't been added.
	5	*
	6	* Modified to support ThrustMaster devices by Zinx Verituse
	7	* on 2003-01-25 from the Logitech force feedback driver,
	8	* which is by Johann Deneux.
	9	*
	10	* Copyright (c) 2003 Zinx Verituse <zinx@epicsol.org>
	11	* Copyright (c) 2002 Johann Deneux
	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>
1da177e4 LT	31
	32	#undef DEBUG
	33	#include <linux/usb.h>
	34
dde5845a	35	#include <linux/hid.h>
4916b3a5	36	#include "usbhid.h"
1da177e4 LT	37
	38	/* Usages for thrustmaster devices I know about */
	39	#define THRUSTMASTER_USAGE_RUMBLE_LR (HID_UP_GENDESK \| 0xbb)
1da177e4	40
1da177e4 LT	41
1da177e4 LT	42	struct tmff_device {
1da177e4	43	struct hid_report *report;
1da177e4	44	struct hid_field *rumble;
dc76c912	45	};
1da177e4	46
dc76c912 AH	47	/* Changes values from 0 to 0xffff into values from minimum to maximum */
	48	static inline int hid_tmff_scale(unsigned int in, int minimum, int maximum)
	49	{
	50	int ret;
1da177e4	51
dc76c912 AH	52	ret = (in * (maximum - minimum) / 0xffff) + minimum;
	53	if (ret < minimum)
	54	return minimum;
	55	if (ret > maximum)
	56	return maximum;
	57	return ret;
	58	}
1da177e4	59
dc76c912 AH	60	static int hid_tmff_play(struct input_dev dev, void data, struct ff_effect *effect)
dc76c912 AH	61	{
e0712985	62	struct hid_device *hid = input_get_drvdata(dev);
dc76c912 AH	63	struct tmff_device *tmff = data;
dc76c912 AH	64	int left, right; /* Rumbling */
1da177e4	65
dc76c912 AH	66	left = hid_tmff_scale(effect->u.rumble.weak_magnitude,
	67	tmff->rumble->logical_minimum, tmff->rumble->logical_maximum);
	68	right = hid_tmff_scale(effect->u.rumble.strong_magnitude,
	69	tmff->rumble->logical_minimum, tmff->rumble->logical_maximum);
1da177e4	70
dc76c912 AH	71	tmff->rumble->value[0] = left;
dc76c912 AH	72	tmff->rumble->value[1] = right;
58037eb9	73	dbg_hid("(left,right)=(%08x, %08x)\n", left, right);
4916b3a5	74	usbhid_submit_report(hid, tmff->report, USB_DIR_OUT);
dc76c912 AH	75
	76	return 0;
	77	}
1da177e4 LT	78
	79	int hid_tmff_init(struct hid_device *hid)
	80	{
dc76c912	81	struct tmff_device *tmff;
1da177e4 LT	82	struct list_head *pos;
1da177e4 LT	83	struct hid_input *hidinput = list_entry(hid->inputs.next, struct hid_input, list);
c5b7c7c3	84	struct input_dev *input_dev = hidinput->input;
dc76c912	85	int error;
1da177e4	86
dc76c912 AH	87	tmff = kzalloc(sizeof(struct tmff_device), GFP_KERNEL);
dc76c912 AH	88	if (!tmff)
1da177e4 LT	89	return -ENOMEM;
1da177e4 LT	90
1da177e4 LT	91	/* Find the report to use */
	92	__list_for_each(pos, &hid->report_enum[HID_OUTPUT_REPORT].report_list) {
	93	struct hid_report report = (struct hid_report )pos;
	94	int fieldnum;
	95
	96	for (fieldnum = 0; fieldnum < report->maxfield; ++fieldnum) {
	97	struct hid_field *field = report->field[fieldnum];
	98
	99	if (field->maxusage <= 0)
	100	continue;
	101
	102	switch (field->usage[0].hid) {
	103	case THRUSTMASTER_USAGE_RUMBLE_LR:
	104	if (field->report_count < 2) {
	105	warn("ignoring THRUSTMASTER_USAGE_RUMBLE_LR with report_count < 2");
	106	continue;
	107	}
	108
	109	if (field->logical_maximum == field->logical_minimum) {
	110	warn("ignoring THRUSTMASTER_USAGE_RUMBLE_LR with logical_maximum == logical_minimum");
	111	continue;
	112	}
	113
dc76c912	114	if (tmff->report && tmff->report != report) {
1da177e4 LT	115	warn("ignoring THRUSTMASTER_USAGE_RUMBLE_LR in other report");
	116	continue;
	117	}
	118
dc76c912	119	if (tmff->rumble && tmff->rumble != field) {
1da177e4 LT	120	warn("ignoring duplicate THRUSTMASTER_USAGE_RUMBLE_LR");
	121	continue;
	122	}
	123
dc76c912 AH	124	tmff->report = report;
dc76c912 AH	125	tmff->rumble = field;
1da177e4	126
c5b7c7c3	127	set_bit(FF_RUMBLE, input_dev->ffbit);
1da177e4 LT	128	break;
	129
	130	default:
	131	warn("ignoring unknown output usage %08x", field->usage[0].hid);
	132	continue;
	133	}
1da177e4 LT	134	}
	135	}
	136
dc76c912 AH	137	error = input_ff_create_memless(input_dev, tmff, hid_tmff_play);
	138	if (error) {
	139	kfree(tmff);
	140	return error;
1da177e4 LT	141	}
1da177e4 LT	142
dc76c912	143	info("Force feedback for ThrustMaster rumble pad devices by Zinx Verituse <zinx@epicsol.org>");
1da177e4	144
1da177e4 LT	145	return 0;
	146	}
	147