1/* 2 * Force feedback support for PantherLord/GreenAsia based devices 3 * 4 * The devices are distributed under various names and the same USB device ID 5 * can be used in both adapters and actual game controllers. 6 * 7 * 0810:0001 "Twin USB Joystick" 8 * - tested with PantherLord USB/PS2 2in1 Adapter 9 * - contains two reports, one for each port (HID_QUIRK_MULTI_INPUT) 10 * 11 * 0e8f:0003 "GreenAsia Inc. USB Joystick " 12 * - tested with K�nig Gaming gamepad 13 * 14 * 0e8f:0003 "GASIA USB Gamepad" 15 * - another version of the K�nig gamepad 16 * 17 * Copyright (c) 2007, 2009 Anssi Hannula <anssi.hannula@gmail.com> 18 */ 19 20/* 21 * This program is free software; you can redistribute it and/or modify 22 * it under the terms of the GNU General Public License as published by 23 * the Free Software Foundation; either version 2 of the License, or 24 * (at your option) any later version. 25 * 26 * This program is distributed in the hope that it will be useful, 27 * but WITHOUT ANY WARRANTY; without even the implied warranty of 28 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 29 * GNU General Public License for more details. 30 * 31 * You should have received a copy of the GNU General Public License 32 * along with this program; if not, write to the Free Software 33 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 34 */ 35 36 37/* #define DEBUG */ 38 39#define debug(format, arg...) pr_debug("hid-plff: " format "\n" , ## arg) 40 41#include <linux/input.h> 42#include <linux/slab.h> 43#include <linux/usb.h> 44#include <linux/hid.h> 45 46#include "hid-ids.h" 47 48#ifdef CONFIG_PANTHERLORD_FF 49#include "usbhid/usbhid.h" 50 51struct plff_device { 52 struct hid_report *report; 53 s32 *strong; 54 s32 *weak; 55}; 56 57static int hid_plff_play(struct input_dev *dev, void *data, 58 struct ff_effect *effect) 59{ 60 struct hid_device *hid = input_get_drvdata(dev); 61 struct plff_device *plff = data; 62 int left, right; 63 64 left = effect->u.rumble.strong_magnitude; 65 right = effect->u.rumble.weak_magnitude; 66 debug("called with 0x%04x 0x%04x", left, right); 67 68 left = left * 0x7f / 0xffff; 69 right = right * 0x7f / 0xffff; 70 71 *plff->strong = left; 72 *plff->weak = right; 73 debug("running with 0x%02x 0x%02x", left, right); 74 usbhid_submit_report(hid, plff->report, USB_DIR_OUT); 75 76 return 0; 77} 78 79static int plff_init(struct hid_device *hid) 80{ 81 struct plff_device *plff; 82 struct hid_report *report; 83 struct hid_input *hidinput; 84 struct list_head *report_list = 85 &hid->report_enum[HID_OUTPUT_REPORT].report_list; 86 struct list_head *report_ptr = report_list; 87 struct input_dev *dev; 88 int error; 89 s32 *strong; 90 s32 *weak; 91 92 /* The device contains one output report per physical device, all 93 containing 1 field, which contains 4 ff00.0002 usages and 4 16bit 94 absolute values. 95 96 The input reports also contain a field which contains 97 8 ff00.0001 usages and 8 boolean values. Their meaning is 98 currently unknown. 99 100 A version of the 0e8f:0003 exists that has all the values in 101 separate fields and misses the extra input field, thus resembling 102 Zeroplus (hid-zpff) devices. 103 */ 104 105 if (list_empty(report_list)) { 106 dev_err(&hid->dev, "no output reports found\n"); 107 return -ENODEV; 108 } 109 110 list_for_each_entry(hidinput, &hid->inputs, list) { 111 112 report_ptr = report_ptr->next; 113 114 if (report_ptr == report_list) { 115 dev_err(&hid->dev, "required output report is " 116 "missing\n"); 117 return -ENODEV; 118 } 119 120 report = list_entry(report_ptr, struct hid_report, list); 121 if (report->maxfield < 1) { 122 dev_err(&hid->dev, "no fields in the report\n"); 123 return -ENODEV; 124 } 125 126 if (report->field[0]->report_count >= 4) { 127 report->field[0]->value[0] = 0x00; 128 report->field[0]->value[1] = 0x00; 129 strong = &report->field[0]->value[2]; 130 weak = &report->field[0]->value[3]; 131 debug("detected single-field device"); 132 } else if (report->maxfield >= 4 && report->field[0]->maxusage == 1 && 133 report->field[0]->usage[0].hid == (HID_UP_LED | 0x43)) { 134 report->field[0]->value[0] = 0x00; 135 report->field[1]->value[0] = 0x00; 136 strong = &report->field[2]->value[0]; 137 weak = &report->field[3]->value[0]; 138 debug("detected 4-field device"); 139 } else { 140 dev_err(&hid->dev, "not enough fields or values\n"); 141 return -ENODEV; 142 } 143 144 plff = kzalloc(sizeof(struct plff_device), GFP_KERNEL); 145 if (!plff) 146 return -ENOMEM; 147 148 dev = hidinput->input; 149 150 set_bit(FF_RUMBLE, dev->ffbit); 151 152 error = input_ff_create_memless(dev, plff, hid_plff_play); 153 if (error) { 154 kfree(plff); 155 return error; 156 } 157 158 plff->report = report; 159 plff->strong = strong; 160 plff->weak = weak; 161 162 *strong = 0x00; 163 *weak = 0x00; 164 usbhid_submit_report(hid, plff->report, USB_DIR_OUT); 165 } 166 167 dev_info(&hid->dev, "Force feedback for PantherLord/GreenAsia " 168 "devices by Anssi Hannula <anssi.hannula@gmail.com>\n"); 169 170 return 0; 171} 172#else 173static inline int plff_init(struct hid_device *hid) 174{ 175 return 0; 176} 177#endif 178 179static int pl_probe(struct hid_device *hdev, const struct hid_device_id *id) 180{ 181 int ret; 182 183 if (id->driver_data) 184 hdev->quirks |= HID_QUIRK_MULTI_INPUT; 185 186 ret = hid_parse(hdev); 187 if (ret) { 188 dev_err(&hdev->dev, "parse failed\n"); 189 goto err; 190 } 191 192 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT & ~HID_CONNECT_FF); 193 if (ret) { 194 dev_err(&hdev->dev, "hw start failed\n"); 195 goto err; 196 } 197 198 plff_init(hdev); 199 200 return 0; 201err: 202 return ret; 203} 204 205static const struct hid_device_id pl_devices[] = { 206 { HID_USB_DEVICE(USB_VENDOR_ID_GAMERON, USB_DEVICE_ID_GAMERON_DUAL_PSX_ADAPTOR), 207 .driver_data = 1 }, /* Twin USB Joystick */ 208 { HID_USB_DEVICE(USB_VENDOR_ID_GAMERON, USB_DEVICE_ID_GAMERON_DUAL_PCS_ADAPTOR), 209 .driver_data = 1 }, /* Twin USB Joystick */ 210 { HID_USB_DEVICE(USB_VENDOR_ID_GREENASIA, 0x0003), }, 211 { } 212}; 213MODULE_DEVICE_TABLE(hid, pl_devices); 214 215static struct hid_driver pl_driver = { 216 .name = "pantherlord", 217 .id_table = pl_devices, 218 .probe = pl_probe, 219}; 220 221static int __init pl_init(void) 222{ 223 return hid_register_driver(&pl_driver); 224} 225 226static void __exit pl_exit(void) 227{ 228 hid_unregister_driver(&pl_driver); 229} 230 231module_init(pl_init); 232module_exit(pl_exit); 233MODULE_LICENSE("GPL"); 234