/* * Force feedback support for PantherLord/GreenAsia based devices * * The devices are distributed under various names and the same USB device ID * can be used in both adapters and actual game controllers. * * 0810:0001 "Twin USB Joystick" * - tested with PantherLord USB/PS2 2in1 Adapter * - contains two reports, one for each port (HID_QUIRK_MULTI_INPUT) * * 0e8f:0003 "GreenAsia Inc. USB Joystick " * - tested with K??ng Gaming gamepad * * Copyright (c) 2007 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 */ /* #define DEBUG */ #define debug(format, arg...) pr_debug("hid-plff: " format "\n" , ## arg) #include <linux/input.h> #include <linux/usb.h> #include <linux/hid.h> #include "hid-ids.h" #ifdef CONFIG_PANTHERLORD_FF #include "usbhid/usbhid.h" struct plff_device { struct hid_report *report; }; static int hid_plff_play(struct input_dev *dev, void *data, struct ff_effect *effect) { struct hid_device *hid = input_get_drvdata(dev); struct plff_device *plff = data; int left, right; left = effect->u.rumble.strong_magnitude; right = effect->u.rumble.weak_magnitude; debug("called with 0x%04x 0x%04x", left, right); left = left * 0x7f / 0xffff; right = right * 0x7f / 0xffff; plff->report->field[0]->value[2] = left; plff->report->field[0]->value[3] = right; debug("running with 0x%02x 0x%02x", left, right); usbhid_submit_report(hid, plff->report, USB_DIR_OUT); return 0; } static int plff_init(struct hid_device *hid) { struct plff_device *plff; struct hid_report *report; struct hid_input *hidinput; struct list_head *report_list = &hid->report_enum[HID_OUTPUT_REPORT].report_list; struct list_head *report_ptr = report_list; struct input_dev *dev; int error; /* The device contains one output report per physical device, all containing 1 field, which contains 4 ff00.0002 usages and 4 16bit absolute values. The input reports also contain a field which contains 8 ff00.0001 usages and 8 boolean values. Their meaning is currently unknown. */ if (list_empty(report_list)) { dev_err(&hid->dev, "no output reports found\n"); return -ENODEV; } list_for_each_entry(hidinput, &hid->inputs, list) { report_ptr = report_ptr->next; if (report_ptr == report_list) { dev_err(&hid->dev, "required output report is " "missing\n"); return -ENODEV; } report = list_entry(report_ptr, struct hid_report, list); if (report->maxfield < 1) { dev_err(&hid->dev, "no fields in the report\n"); return -ENODEV; } if (report->field[0]->report_count < 4) { dev_err(&hid->dev, "not enough values in the field\n"); return -ENODEV; } plff = kzalloc(sizeof(struct plff_device), GFP_KERNEL); if (!plff) return -ENOMEM; dev = hidinput->input; set_bit(FF_RUMBLE, dev->ffbit); error = input_ff_create_memless(dev, plff, hid_plff_play); if (error) { kfree(plff); return error; } plff->report = report; plff->report->field[0]->value[0] = 0x00; plff->report->field[0]->value[1] = 0x00; plff->report->field[0]->value[2] = 0x00; plff->report->field[0]->value[3] = 0x00; usbhid_submit_report(hid, plff->report, USB_DIR_OUT); } dev_info(&hid->dev, "Force feedback for PantherLord/GreenAsia " "devices by Anssi Hannula <anssi.hannula@gmail.com>\n"); return 0; } #else static inline int plff_init(struct hid_device *hid) { return 0; } #endif static int pl_probe(struct hid_device *hdev, const struct hid_device_id *id) { int ret; if (id->driver_data) hdev->quirks |= HID_QUIRK_MULTI_INPUT; ret = hid_parse(hdev); if (ret) { dev_err(&hdev->dev, "parse failed\n"); goto err; } ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT & ~HID_CONNECT_FF); if (ret) { dev_err(&hdev->dev, "hw start failed\n"); goto err; } plff_init(hdev); return 0; err: return ret; } static const struct hid_device_id pl_devices[] = { { HID_USB_DEVICE(USB_VENDOR_ID_GAMERON, USB_DEVICE_ID_GAMERON_DUAL_PSX_ADAPTOR), .driver_data = 1 }, /* Twin USB Joystick */ { HID_USB_DEVICE(USB_VENDOR_ID_GREENASIA, 0x0003), }, /* GreenAsia Inc. USB Joystick */ { } }; MODULE_DEVICE_TABLE(hid, pl_devices); static struct hid_driver pl_driver = { .name = "pantherlord", .id_table = pl_devices, .probe = pl_probe, }; static int pl_init(void) { return hid_register_driver(&pl_driver); } static void pl_exit(void) { hid_unregister_driver(&pl_driver); } module_init(pl_init); module_exit(pl_exit); MODULE_LICENSE("GPL"); HID_COMPAT_LOAD_DRIVER(pantherlord);