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 König Gaming gamepad 13 * 14 * 0e8f:0003 "GASIA USB Gamepad" 15 * - another version of the König 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/module.h> 44 #include <linux/usb.h> 45 #include <linux/hid.h> 46 47 #include "hid-ids.h" 48 49 #ifdef CONFIG_PANTHERLORD_FF 50 #include "usbhid/usbhid.h" 51 52 struct plff_device { 53 struct hid_report *report; 54 s32 *strong; 55 s32 *weak; 56 }; 57 58 static int hid_plff_play(struct input_dev *dev, void *data, 59 struct ff_effect *effect) 60 { 61 struct hid_device *hid = input_get_drvdata(dev); 62 struct plff_device *plff = data; 63 int left, right; 64 65 left = effect->u.rumble.strong_magnitude; 66 right = effect->u.rumble.weak_magnitude; 67 debug("called with 0x%04x 0x%04x", left, right); 68 69 left = left * 0x7f / 0xffff; 70 right = right * 0x7f / 0xffff; 71 72 *plff->strong = left; 73 *plff->weak = right; 74 debug("running with 0x%02x 0x%02x", left, right); 75 usbhid_submit_report(hid, plff->report, USB_DIR_OUT); 76 77 return 0; 78 } 79 80 static int plff_init(struct hid_device *hid) 81 { 82 struct plff_device *plff; 83 struct hid_report *report; 84 struct hid_input *hidinput; 85 struct list_head *report_list = 86 &hid->report_enum[HID_OUTPUT_REPORT].report_list; 87 struct list_head *report_ptr = report_list; 88 struct input_dev *dev; 89 int error; 90 s32 *strong; 91 s32 *weak; 92 93 /* The device contains one output report per physical device, all 94 containing 1 field, which contains 4 ff00.0002 usages and 4 16bit 95 absolute values. 96 97 The input reports also contain a field which contains 98 8 ff00.0001 usages and 8 boolean values. Their meaning is 99 currently unknown. 100 101 A version of the 0e8f:0003 exists that has all the values in 102 separate fields and misses the extra input field, thus resembling 103 Zeroplus (hid-zpff) devices. 104 */ 105 106 if (list_empty(report_list)) { 107 hid_err(hid, "no output reports found\n"); 108 return -ENODEV; 109 } 110 111 list_for_each_entry(hidinput, &hid->inputs, list) { 112 113 report_ptr = report_ptr->next; 114 115 if (report_ptr == report_list) { 116 hid_err(hid, "required output report is missing\n"); 117 return -ENODEV; 118 } 119 120 report = list_entry(report_ptr, struct hid_report, list); 121 if (report->maxfield < 1) { 122 hid_err(hid, "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 hid_err(hid, "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 hid_info(hid, "Force feedback for PantherLord/GreenAsia devices by Anssi Hannula <anssi.hannula@gmail.com>\n"); 168 169 return 0; 170 } 171 #else 172 static inline int plff_init(struct hid_device *hid) 173 { 174 return 0; 175 } 176 #endif 177 178 static int pl_probe(struct hid_device *hdev, const struct hid_device_id *id) 179 { 180 int ret; 181 182 if (id->driver_data) 183 hdev->quirks |= HID_QUIRK_MULTI_INPUT; 184 185 ret = hid_parse(hdev); 186 if (ret) { 187 hid_err(hdev, "parse failed\n"); 188 goto err; 189 } 190 191 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT & ~HID_CONNECT_FF); 192 if (ret) { 193 hid_err(hdev, "hw start failed\n"); 194 goto err; 195 } 196 197 plff_init(hdev); 198 199 return 0; 200 err: 201 return ret; 202 } 203 204 static const struct hid_device_id pl_devices[] = { 205 { HID_USB_DEVICE(USB_VENDOR_ID_GAMERON, USB_DEVICE_ID_GAMERON_DUAL_PSX_ADAPTOR), 206 .driver_data = 1 }, /* Twin USB Joystick */ 207 { HID_USB_DEVICE(USB_VENDOR_ID_GAMERON, USB_DEVICE_ID_GAMERON_DUAL_PCS_ADAPTOR), 208 .driver_data = 1 }, /* Twin USB Joystick */ 209 { HID_USB_DEVICE(USB_VENDOR_ID_GREENASIA, 0x0003), }, 210 { } 211 }; 212 MODULE_DEVICE_TABLE(hid, pl_devices); 213 214 static struct hid_driver pl_driver = { 215 .name = "pantherlord", 216 .id_table = pl_devices, 217 .probe = pl_probe, 218 }; 219 220 static int __init pl_init(void) 221 { 222 return hid_register_driver(&pl_driver); 223 } 224 225 static void __exit pl_exit(void) 226 { 227 hid_unregister_driver(&pl_driver); 228 } 229 230 module_init(pl_init); 231 module_exit(pl_exit); 232 MODULE_LICENSE("GPL"); 233