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 51 struct plff_device { 52 struct hid_report *report; 53 s32 *strong; 54 s32 *weak; 55 }; 56 57 static 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 79 static 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 hid_err(hid, "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 hid_err(hid, "required output report is missing\n"); 116 return -ENODEV; 117 } 118 119 report = list_entry(report_ptr, struct hid_report, list); 120 if (report->maxfield < 1) { 121 hid_err(hid, "no fields in the report\n"); 122 return -ENODEV; 123 } 124 125 if (report->field[0]->report_count >= 4) { 126 report->field[0]->value[0] = 0x00; 127 report->field[0]->value[1] = 0x00; 128 strong = &report->field[0]->value[2]; 129 weak = &report->field[0]->value[3]; 130 debug("detected single-field device"); 131 } else if (report->maxfield >= 4 && report->field[0]->maxusage == 1 && 132 report->field[0]->usage[0].hid == (HID_UP_LED | 0x43)) { 133 report->field[0]->value[0] = 0x00; 134 report->field[1]->value[0] = 0x00; 135 strong = &report->field[2]->value[0]; 136 weak = &report->field[3]->value[0]; 137 debug("detected 4-field device"); 138 } else { 139 hid_err(hid, "not enough fields or values\n"); 140 return -ENODEV; 141 } 142 143 plff = kzalloc(sizeof(struct plff_device), GFP_KERNEL); 144 if (!plff) 145 return -ENOMEM; 146 147 dev = hidinput->input; 148 149 set_bit(FF_RUMBLE, dev->ffbit); 150 151 error = input_ff_create_memless(dev, plff, hid_plff_play); 152 if (error) { 153 kfree(plff); 154 return error; 155 } 156 157 plff->report = report; 158 plff->strong = strong; 159 plff->weak = weak; 160 161 *strong = 0x00; 162 *weak = 0x00; 163 usbhid_submit_report(hid, plff->report, USB_DIR_OUT); 164 } 165 166 hid_info(hid, "Force feedback for PantherLord/GreenAsia devices by Anssi Hannula <anssi.hannula@gmail.com>\n"); 167 168 return 0; 169 } 170 #else 171 static inline int plff_init(struct hid_device *hid) 172 { 173 return 0; 174 } 175 #endif 176 177 static int pl_probe(struct hid_device *hdev, const struct hid_device_id *id) 178 { 179 int ret; 180 181 if (id->driver_data) 182 hdev->quirks |= HID_QUIRK_MULTI_INPUT; 183 184 ret = hid_parse(hdev); 185 if (ret) { 186 hid_err(hdev, "parse failed\n"); 187 goto err; 188 } 189 190 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT & ~HID_CONNECT_FF); 191 if (ret) { 192 hid_err(hdev, "hw start failed\n"); 193 goto err; 194 } 195 196 plff_init(hdev); 197 198 return 0; 199 err: 200 return ret; 201 } 202 203 static const struct hid_device_id pl_devices[] = { 204 { HID_USB_DEVICE(USB_VENDOR_ID_GAMERON, USB_DEVICE_ID_GAMERON_DUAL_PSX_ADAPTOR), 205 .driver_data = 1 }, /* Twin USB Joystick */ 206 { HID_USB_DEVICE(USB_VENDOR_ID_GAMERON, USB_DEVICE_ID_GAMERON_DUAL_PCS_ADAPTOR), 207 .driver_data = 1 }, /* Twin USB Joystick */ 208 { HID_USB_DEVICE(USB_VENDOR_ID_GREENASIA, 0x0003), }, 209 { } 210 }; 211 MODULE_DEVICE_TABLE(hid, pl_devices); 212 213 static struct hid_driver pl_driver = { 214 .name = "pantherlord", 215 .id_table = pl_devices, 216 .probe = pl_probe, 217 }; 218 219 static int __init pl_init(void) 220 { 221 return hid_register_driver(&pl_driver); 222 } 223 224 static void __exit pl_exit(void) 225 { 226 hid_unregister_driver(&pl_driver); 227 } 228 229 module_init(pl_init); 230 module_exit(pl_exit); 231 MODULE_LICENSE("GPL"); 232