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Commit c17f9c90 authored by Anssi Hannula's avatar Anssi Hannula Committed by Jiri Kosina
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HID: force feedback driver for Logitech Rumblepad 2 



Add force feedback support for Logitech Rumblepad 2.

Tested-By: default avatarEdgar Simo <bobbens@gmail.com>
Signed-off-by: default avatarAnssi Hannula <anssi.hannula@gmail.com>
Signed-off-by: default avatarJiri Kosina <jkosina@suse.cz>
parent 1d1bdd20

drivers/hid/usbhid/Kconfig

+8 −0
Original line number Diff line number Diff line
@@ -71,6 +71,14 @@ config LOGITECH_FF 
	  Note: if you say N here, this device will still be supported, but without

	  force feedback.



config LOGIRUMBLEPAD2_FF

	bool "Logitech Rumblepad 2 support"

	depends on HID_FF

	select INPUT_FF_MEMLESS if USB_HID

	help

	  Say Y here if you want to enable force feedback support for Logitech

	  Rumblepad 2 devices.



config PANTHERLORD_FF

	bool "PantherLord/GreenAsia based device support"

	depends on HID_FF

drivers/hid/usbhid/Makefile

+3 −0
Original line number Diff line number Diff line
@@ -16,6 +16,9 @@ endif 
ifeq ($(CONFIG_LOGITECH_FF),y)

	usbhid-objs	+= hid-lgff.o

endif

ifeq ($(CONFIG_LOGIRUMBLEPAD2_FF),y)

	usbhid-objs	+= hid-lg2ff.o

endif

ifeq ($(CONFIG_PANTHERLORD_FF),y)

	usbhid-objs	+= hid-plff.o

endif

drivers/hid/usbhid/hid-ff.c

+3 −0
Original line number Diff line number Diff line
@@ -59,6 +59,9 @@ static struct hid_ff_initializer inits[] = { 
	{ 0x46d, 0xc295, hid_lgff_init }, /* Logitech MOMO force wheel */

	{ 0x46d, 0xca03, hid_lgff_init }, /* Logitech MOMO force wheel */

#endif

#ifdef CONFIG_LOGIRUMBLEPAD2_FF

	{ 0x46d, 0xc218, hid_lg2ff_init }, /* Logitech Rumblepad 2 */

#endif

#ifdef CONFIG_PANTHERLORD_FF

	{ 0x810, 0x0001, hid_plff_init }, /* "Twin USB Joystick" */

	{ 0xe8f, 0x0003, hid_plff_init }, /* "GreenAsia Inc.    USB Joystick     " */

drivers/hid/usbhid/hid-lg2ff.c

0 → 100644
+114 −0
Original line number Diff line number Diff line 
/*

 *  Force feedback support for Logitech Rumblepad 2

 *

 *  Copyright (c) 2008 Anssi Hannula <anssi.hannula@gmail.com>

 */



/*

 * 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/usb.h>

#include <linux/hid.h>

#include "usbhid.h"



struct lg2ff_device {

	struct hid_report *report;

};



static int play_effect(struct input_dev *dev, void *data,

			 struct ff_effect *effect)

{

	struct hid_device *hid = input_get_drvdata(dev);

	struct lg2ff_device *lg2ff = data;

	int weak, strong;



	strong = effect->u.rumble.strong_magnitude;

	weak = effect->u.rumble.weak_magnitude;



	if (weak || strong) {

		weak = weak * 0xff / 0xffff;

		strong = strong * 0xff / 0xffff;



		lg2ff->report->field[0]->value[0] = 0x51;

		lg2ff->report->field[0]->value[2] = weak;

		lg2ff->report->field[0]->value[4] = strong;

	} else {

		lg2ff->report->field[0]->value[0] = 0xf3;

		lg2ff->report->field[0]->value[2] = 0x00;

		lg2ff->report->field[0]->value[4] = 0x00;

	}



	usbhid_submit_report(hid, lg2ff->report, USB_DIR_OUT);

	return 0;

}



int hid_lg2ff_init(struct hid_device *hid)

{

	struct lg2ff_device *lg2ff;

	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 input_dev *dev = hidinput->input;

	int error;



	if (list_empty(report_list)) {

		printk(KERN_ERR "hid-lg2ff: no output report found\n");

		return -ENODEV;

	}



	report = list_entry(report_list->next, struct hid_report, list);



	if (report->maxfield < 1) {

		printk(KERN_ERR "hid-lg2ff: output report is empty\n");

		return -ENODEV;

	}

	if (report->field[0]->report_count < 7) {

		printk(KERN_ERR "hid-lg2ff: not enough values in the field\n");

		return -ENODEV;

	}



	lg2ff = kmalloc(sizeof(struct lg2ff_device), GFP_KERNEL);

	if (!lg2ff)

		return -ENOMEM;



	set_bit(FF_RUMBLE, dev->ffbit);



	error = input_ff_create_memless(dev, lg2ff, play_effect);

	if (error) {

		kfree(lg2ff);

		return error;

	}



	lg2ff->report = report;

	report->field[0]->value[0] = 0xf3;

	report->field[0]->value[1] = 0x00;

	report->field[0]->value[2] = 0x00;

	report->field[0]->value[3] = 0x00;

	report->field[0]->value[4] = 0x00;

	report->field[0]->value[5] = 0x00;

	report->field[0]->value[6] = 0x00;



	usbhid_submit_report(hid, report, USB_DIR_OUT);



	printk(KERN_INFO "Force feedback for Logitech Rumblepad 2 by "

	       "Anssi Hannula <anssi.hannula@gmail.com>\n");



	return 0;

}

include/linux/hid.h

+1 −0
Original line number Diff line number Diff line
@@ -547,6 +547,7 @@ void usbhid_fixup_report_descriptor(const u16, const u16, char *, unsigned, char 
int hid_ff_init(struct hid_device *hid);



int hid_lgff_init(struct hid_device *hid);

int hid_lg2ff_init(struct hid_device *hid);

int hid_plff_init(struct hid_device *hid);

int hid_tmff_init(struct hid_device *hid);

int hid_zpff_init(struct hid_device *hid);