226 lines
6.0 KiB
C
226 lines
6.0 KiB
C
/*
|
|
* Force feedback support for Holtek On Line Grip based gamepads
|
|
*
|
|
* These include at least a Brazilian "Clone Joypad Super Power Fire"
|
|
* which uses vendor ID 0x1241 and identifies as "HOLTEK On Line Grip".
|
|
*
|
|
* Copyright (c) 2011 Anssi Hannula <anssi.hannula@iki.fi>
|
|
*/
|
|
|
|
/*
|
|
* 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/module.h>
|
|
#include <linux/slab.h>
|
|
|
|
#include "hid-ids.h"
|
|
|
|
#ifdef CONFIG_HOLTEK_FF
|
|
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_AUTHOR("Anssi Hannula <anssi.hannula@iki.fi>");
|
|
MODULE_DESCRIPTION("Force feedback support for Holtek On Line Grip based devices");
|
|
|
|
/*
|
|
* These commands and parameters are currently known:
|
|
*
|
|
* byte 0: command id:
|
|
* 01 set effect parameters
|
|
* 02 play specified effect
|
|
* 03 stop specified effect
|
|
* 04 stop all effects
|
|
* 06 stop all effects
|
|
* (the difference between 04 and 06 isn't known; win driver
|
|
* sends 06,04 on application init, and 06 otherwise)
|
|
*
|
|
* Commands 01 and 02 need to be sent as pairs, i.e. you need to send 01
|
|
* before each 02.
|
|
*
|
|
* The rest of the bytes are parameters. Command 01 takes all of them, and
|
|
* commands 02,03 take only the effect id.
|
|
*
|
|
* byte 1:
|
|
* bits 0-3: effect id:
|
|
* 1: very strong rumble
|
|
* 2: periodic rumble, short intervals
|
|
* 3: very strong rumble
|
|
* 4: periodic rumble, long intervals
|
|
* 5: weak periodic rumble, long intervals
|
|
* 6: weak periodic rumble, short intervals
|
|
* 7: periodic rumble, short intervals
|
|
* 8: strong periodic rumble, short intervals
|
|
* 9: very strong rumble
|
|
* a: causes an error
|
|
* b: very strong periodic rumble, very short intervals
|
|
* c-f: nothing
|
|
* bit 6: right (weak) motor enabled
|
|
* bit 7: left (strong) motor enabled
|
|
*
|
|
* bytes 2-3: time in milliseconds, big-endian
|
|
* bytes 5-6: unknown (win driver seems to use at least 10e0 with effect 1
|
|
* and 0014 with effect 6)
|
|
* byte 7:
|
|
* bits 0-3: effect magnitude
|
|
*/
|
|
|
|
#define HOLTEKFF_MSG_LENGTH 7
|
|
|
|
static const u8 start_effect_1[] = { 0x02, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00 };
|
|
static const u8 stop_all4[] = { 0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
|
|
static const u8 stop_all6[] = { 0x06, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
|
|
|
|
struct holtekff_device {
|
|
struct hid_field *field;
|
|
};
|
|
|
|
static void holtekff_send(struct holtekff_device *holtekff,
|
|
struct hid_device *hid,
|
|
const u8 data[HOLTEKFF_MSG_LENGTH])
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < HOLTEKFF_MSG_LENGTH; i++) {
|
|
holtekff->field->value[i] = data[i];
|
|
}
|
|
|
|
dbg_hid("sending %7ph\n", data);
|
|
|
|
hid_hw_request(hid, holtekff->field->report, HID_REQ_SET_REPORT);
|
|
}
|
|
|
|
static int holtekff_play(struct input_dev *dev, void *data,
|
|
struct ff_effect *effect)
|
|
{
|
|
struct hid_device *hid = input_get_drvdata(dev);
|
|
struct holtekff_device *holtekff = data;
|
|
int left, right;
|
|
/* effect type 1, length 65535 msec */
|
|
u8 buf[HOLTEKFF_MSG_LENGTH] =
|
|
{ 0x01, 0x01, 0xff, 0xff, 0x10, 0xe0, 0x00 };
|
|
|
|
left = effect->u.rumble.strong_magnitude;
|
|
right = effect->u.rumble.weak_magnitude;
|
|
dbg_hid("called with 0x%04x 0x%04x\n", left, right);
|
|
|
|
if (!left && !right) {
|
|
holtekff_send(holtekff, hid, stop_all6);
|
|
return 0;
|
|
}
|
|
|
|
if (left)
|
|
buf[1] |= 0x80;
|
|
if (right)
|
|
buf[1] |= 0x40;
|
|
|
|
/* The device takes a single magnitude, so we just sum them up. */
|
|
buf[6] = min(0xf, (left >> 12) + (right >> 12));
|
|
|
|
holtekff_send(holtekff, hid, buf);
|
|
holtekff_send(holtekff, hid, start_effect_1);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int holtekff_init(struct hid_device *hid)
|
|
{
|
|
struct holtekff_device *holtekff;
|
|
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 < 1 || report->field[0]->report_count != 7) {
|
|
hid_err(hid, "unexpected output report layout\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
holtekff = kzalloc(sizeof(*holtekff), GFP_KERNEL);
|
|
if (!holtekff)
|
|
return -ENOMEM;
|
|
|
|
set_bit(FF_RUMBLE, dev->ffbit);
|
|
|
|
holtekff->field = report->field[0];
|
|
|
|
/* initialize the same way as win driver does */
|
|
holtekff_send(holtekff, hid, stop_all4);
|
|
holtekff_send(holtekff, hid, stop_all6);
|
|
|
|
error = input_ff_create_memless(dev, holtekff, holtekff_play);
|
|
if (error) {
|
|
kfree(holtekff);
|
|
return error;
|
|
}
|
|
|
|
hid_info(hid, "Force feedback for Holtek On Line Grip based devices by Anssi Hannula <anssi.hannula@iki.fi>\n");
|
|
|
|
return 0;
|
|
}
|
|
#else
|
|
static inline int holtekff_init(struct hid_device *hid)
|
|
{
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
static int holtek_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;
|
|
}
|
|
|
|
holtekff_init(hdev);
|
|
|
|
return 0;
|
|
err:
|
|
return ret;
|
|
}
|
|
|
|
static const struct hid_device_id holtek_devices[] = {
|
|
{ HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK, USB_DEVICE_ID_HOLTEK_ON_LINE_GRIP) },
|
|
{ }
|
|
};
|
|
MODULE_DEVICE_TABLE(hid, holtek_devices);
|
|
|
|
static struct hid_driver holtek_driver = {
|
|
.name = "holtek",
|
|
.id_table = holtek_devices,
|
|
.probe = holtek_probe,
|
|
};
|
|
module_hid_driver(holtek_driver);
|