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

/*
 *  Force feedback support for Zeroplus based devices
 *
 *  Copyright (c) 2005, 2006 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/hid.h>
#include <linux/input.h>
#include <linux/slab.h>
#include <linux/usb.h>

#include "hid-ids.h"

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

struct zpff_device {
	struct hid_report *report;
};

static int zpff_play(struct input_dev *dev, void *data,
			 struct ff_effect *effect)
{
	struct hid_device *hid = input_get_drvdata(dev);
	struct zpff_device *zpff = data;
	int left, right;

	/*
	 * The following is specified the other way around in the Zeroplus
	 * datasheet but the order below is correct for the XFX Executioner;
	 * however it is possible that the XFX Executioner is an exception
	 */

	left = effect->u.rumble.strong_magnitude;
	right = effect->u.rumble.weak_magnitude;
	dbg_hid("called with 0x%04x 0x%04x\n", left, right);

	left = left * 0x7f / 0xffff;
	right = right * 0x7f / 0xffff;

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

	return 0;
}

static int zpff_init(struct hid_device *hid)
{
	struct zpff_device *zpff;
	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)) {
		hid_err(hid, "no output report found\n");
		return -ENODEV;
	}

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

	if (report->maxfield < 4) {
		hid_err(hid, "not enough fields in report\n");
		return -ENODEV;
	}

	zpff = kzalloc(sizeof(struct zpff_device), GFP_KERNEL);
	if (!zpff)
		return -ENOMEM;

	set_bit(FF_RUMBLE, dev->ffbit);

	error = input_ff_create_memless(dev, zpff, zpff_play);
	if (error) {
		kfree(zpff);
		return error;
	}

	zpff->report = report;
	zpff->report->field[0]->value[0] = 0x00;
	zpff->report->field[1]->value[0] = 0x02;
	zpff->report->field[2]->value[0] = 0x00;
	zpff->report->field[3]->value[0] = 0x00;
	usbhid_submit_report(hid, zpff->report, USB_DIR_OUT);

	hid_info(hid, "force feedback for Zeroplus based devices by Anssi Hannula <anssi.hannula@gmail.com>\n");

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

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

	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;
	}

	zpff_init(hdev);

	return 0;
err:
	return ret;
}

static const struct hid_device_id zp_devices[] = {
	{ HID_USB_DEVICE(USB_VENDOR_ID_ZEROPLUS, 0x0005) },
	{ HID_USB_DEVICE(USB_VENDOR_ID_ZEROPLUS, 0x0030) },
	{ }
};
MODULE_DEVICE_TABLE(hid, zp_devices);

static struct hid_driver zp_driver = {
	.name = "zeroplus",
	.id_table = zp_devices,
	.probe = zp_probe,
};

static int __init zp_init(void)
{
	return hid_register_driver(&zp_driver);
}

static void __exit zp_exit(void)
{
	hid_unregister_driver(&zp_driver);
}

module_init(zp_init);
module_exit(zp_exit);
MODULE_LICENSE("GPL");
Commit	Line	Data
bb3caf7f AH	1	/*
	2	* Force feedback support for Zeroplus based devices
	3	*
	4	* Copyright (c) 2005, 2006 Anssi Hannula <anssi.hannula@gmail.com>
	5	*/
	6
	7	/*
	8	* This program is free software; you can redistribute it and/or modify
	9	* it under the terms of the GNU General Public License as published by
	10	* the Free Software Foundation; either version 2 of the License, or
	11	* (at your option) any later version.
	12	*
	13	* This program is distributed in the hope that it will be useful,
	14	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	15	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	16	* GNU General Public License for more details.
	17	*
	18	* You should have received a copy of the GNU General Public License
	19	* along with this program; if not, write to the Free Software
	20	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	21	*/
	22
	23
987fbc1f	24	#include <linux/hid.h>
bb3caf7f	25	#include <linux/input.h>
5a0e3ad6	26	#include <linux/slab.h>
bb3caf7f	27	#include <linux/usb.h>
987fbc1f JS	28
	29	#include "hid-ids.h"
	30
0f6f4319	31	#ifdef CONFIG_ZEROPLUS_FF
987fbc1f	32	#include "usbhid/usbhid.h"
bb3caf7f AH	33
	34	struct zpff_device {
	35	struct hid_report *report;
	36	};
	37
987fbc1f	38	static int zpff_play(struct input_dev dev, void data,
bb3caf7f AH	39	struct ff_effect *effect)
bb3caf7f AH	40	{
e0712985	41	struct hid_device *hid = input_get_drvdata(dev);
bb3caf7f AH	42	struct zpff_device *zpff = data;
	43	int left, right;
	44
	45	/*
	46	* The following is specified the other way around in the Zeroplus
	47	* datasheet but the order below is correct for the XFX Executioner;
	48	* however it is possible that the XFX Executioner is an exception
	49	*/
	50
	51	left = effect->u.rumble.strong_magnitude;
	52	right = effect->u.rumble.weak_magnitude;
58037eb9	53	dbg_hid("called with 0x%04x 0x%04x\n", left, right);
bb3caf7f AH	54
	55	left = left * 0x7f / 0xffff;
	56	right = right * 0x7f / 0xffff;
	57
	58	zpff->report->field[2]->value[0] = left;
	59	zpff->report->field[3]->value[0] = right;
58037eb9	60	dbg_hid("running with 0x%02x 0x%02x\n", left, right);
4916b3a5	61	usbhid_submit_report(hid, zpff->report, USB_DIR_OUT);
bb3caf7f AH	62
	63	return 0;
	64	}
	65
987fbc1f	66	static int zpff_init(struct hid_device *hid)
bb3caf7f AH	67	{
	68	struct zpff_device *zpff;
	69	struct hid_report *report;
	70	struct hid_input *hidinput = list_entry(hid->inputs.next,
	71	struct hid_input, list);
	72	struct list_head *report_list =
	73	&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 report found\n");
bb3caf7f AH	79	return -ENODEV;
	80	}
	81
	82	report = list_entry(report_list->next, struct hid_report, list);
	83
	84	if (report->maxfield < 4) {
4291ee30	85	hid_err(hid, "not enough fields in report\n");
bb3caf7f AH	86	return -ENODEV;
	87	}
	88
	89	zpff = kzalloc(sizeof(struct zpff_device), GFP_KERNEL);
	90	if (!zpff)
	91	return -ENOMEM;
	92
	93	set_bit(FF_RUMBLE, dev->ffbit);
	94
987fbc1f	95	error = input_ff_create_memless(dev, zpff, zpff_play);
bb3caf7f AH	96	if (error) {
	97	kfree(zpff);
	98	return error;
	99	}
	100
	101	zpff->report = report;
	102	zpff->report->field[0]->value[0] = 0x00;
	103	zpff->report->field[1]->value[0] = 0x02;
	104	zpff->report->field[2]->value[0] = 0x00;
	105	zpff->report->field[3]->value[0] = 0x00;
4916b3a5	106	usbhid_submit_report(hid, zpff->report, USB_DIR_OUT);
bb3caf7f	107
4291ee30	108	hid_info(hid, "force feedback for Zeroplus based devices by Anssi Hannula <anssi.hannula@gmail.com>\n");
bb3caf7f AH	109
	110	return 0;
	111	}
0f6f4319 JK	112	#else
	113	static inline int zpff_init(struct hid_device *hid)
	114	{
	115	return 0;
	116	}
	117	#endif
987fbc1f JS	118
	119	static int zp_probe(struct hid_device hdev, const struct hid_device_id id)
	120	{
	121	int ret;
	122
	123	ret = hid_parse(hdev);
	124	if (ret) {
4291ee30	125	hid_err(hdev, "parse failed\n");
987fbc1f JS	126	goto err;
	127	}
	128
	129	ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT & ~HID_CONNECT_FF);
	130	if (ret) {
4291ee30	131	hid_err(hdev, "hw start failed\n");
987fbc1f JS	132	goto err;
	133	}
	134
	135	zpff_init(hdev);
	136
	137	return 0;
	138	err:
	139	return ret;
	140	}
	141
	142	static const struct hid_device_id zp_devices[] = {
	143	{ HID_USB_DEVICE(USB_VENDOR_ID_ZEROPLUS, 0x0005) },
	144	{ HID_USB_DEVICE(USB_VENDOR_ID_ZEROPLUS, 0x0030) },
	145	{ }
	146	};
	147	MODULE_DEVICE_TABLE(hid, zp_devices);
	148
	149	static struct hid_driver zp_driver = {
	150	.name = "zeroplus",
	151	.id_table = zp_devices,
	152	.probe = zp_probe,
	153	};
	154
a24f423b	155	static int __init zp_init(void)
987fbc1f JS	156	{
	157	return hid_register_driver(&zp_driver);
	158	}
	159
a24f423b	160	static void __exit zp_exit(void)
987fbc1f JS	161	{
	162	hid_unregister_driver(&zp_driver);
	163	}
	164
	165	module_init(zp_init);
	166	module_exit(zp_exit);
	167	MODULE_LICENSE("GPL");