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 * 0f30:0111 "Saitek Color Rumble Pad" 18 * 19 * Copyright (c) 2007, 2009 Anssi Hannula <anssi.hannula@gmail.com> 20 */ 21 22 /* 23 * This program is free software; you can redistribute it and/or modify 24 * it under the terms of the GNU General Public License as published by 25 * the Free Software Foundation; either version 2 of the License, or 26 * (at your option) any later version. 27 * 28 * This program is distributed in the hope that it will be useful, 29 * but WITHOUT ANY WARRANTY; without even the implied warranty of 30 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 31 * GNU General Public License for more details. 32 * 33 * You should have received a copy of the GNU General Public License 34 * along with this program; if not, write to the Free Software 35 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 36 */ 37 38 39 /* #define DEBUG */ 40 41 #define debug(format, arg...) pr_debug("hid-plff: " format "\n" , ## arg) 42 43 #include <linux/input.h> 44 #include <linux/slab.h> 45 #include <linux/module.h> 46 #include <linux/usb.h> 47 #include <linux/hid.h> 48 49 #include "hid-ids.h" 50 51 #ifdef CONFIG_PANTHERLORD_FF 52 #include "usbhid/usbhid.h" 53 54 struct plff_device { 55 struct hid_report *report; 56 s32 maxval; 57 s32 *strong; 58 s32 *weak; 59 }; 60 61 static int hid_plff_play(struct input_dev *dev, void *data, 62 struct ff_effect *effect) 63 { 64 struct hid_device *hid = input_get_drvdata(dev); 65 struct plff_device *plff = data; 66 int left, right; 67 68 left = effect->u.rumble.strong_magnitude; 69 right = effect->u.rumble.weak_magnitude; 70 debug("called with 0x%04x 0x%04x", left, right); 71 72 left = left * plff->maxval / 0xffff; 73 right = right * plff->maxval / 0xffff; 74 75 *plff->strong = left; 76 *plff->weak = right; 77 debug("running with 0x%02x 0x%02x", left, right); 78 usbhid_submit_report(hid, plff->report, USB_DIR_OUT); 79 80 return 0; 81 } 82 83 static int plff_init(struct hid_device *hid) 84 { 85 struct plff_device *plff; 86 struct hid_report *report; 87 struct hid_input *hidinput; 88 struct list_head *report_list = 89 &hid->report_enum[HID_OUTPUT_REPORT].report_list; 90 struct list_head *report_ptr = report_list; 91 struct input_dev *dev; 92 int error; 93 s32 maxval; 94 s32 *strong; 95 s32 *weak; 96 97 /* The device contains one output report per physical device, all 98 containing 1 field, which contains 4 ff00.0002 usages and 4 16bit 99 absolute values. 100 101 The input reports also contain a field which contains 102 8 ff00.0001 usages and 8 boolean values. Their meaning is 103 currently unknown. 104 105 A version of the 0e8f:0003 exists that has all the values in 106 separate fields and misses the extra input field, thus resembling 107 Zeroplus (hid-zpff) devices. 108 */ 109 110 if (list_empty(report_list)) { 111 hid_err(hid, "no output reports found\n"); 112 return -ENODEV; 113 } 114 115 list_for_each_entry(hidinput, &hid->inputs, list) { 116 117 report_ptr = report_ptr->next; 118 119 if (report_ptr == report_list) { 120 hid_err(hid, "required output report is missing\n"); 121 return -ENODEV; 122 } 123 124 report = list_entry(report_ptr, struct hid_report, list); 125 if (report->maxfield < 1) { 126 hid_err(hid, "no fields in the report\n"); 127 return -ENODEV; 128 } 129 130 maxval = 0x7f; 131 if (report->field[0]->report_count >= 4) { 132 report->field[0]->value[0] = 0x00; 133 report->field[0]->value[1] = 0x00; 134 strong = &report->field[0]->value[2]; 135 weak = &report->field[0]->value[3]; 136 debug("detected single-field device"); 137 } else if (report->maxfield >= 4 && report->field[0]->maxusage == 1 && 138 report->field[0]->usage[0].hid == (HID_UP_LED | 0x43)) { 139 report->field[0]->value[0] = 0x00; 140 report->field[1]->value[0] = 0x00; 141 strong = &report->field[2]->value[0]; 142 weak = &report->field[3]->value[0]; 143 if (hid->vendor == USB_VENDOR_ID_JESS2) 144 maxval = 0xff; 145 debug("detected 4-field device"); 146 } else { 147 hid_err(hid, "not enough fields or values\n"); 148 return -ENODEV; 149 } 150 151 plff = kzalloc(sizeof(struct plff_device), GFP_KERNEL); 152 if (!plff) 153 return -ENOMEM; 154 155 dev = hidinput->input; 156 157 set_bit(FF_RUMBLE, dev->ffbit); 158 159 error = input_ff_create_memless(dev, plff, hid_plff_play); 160 if (error) { 161 kfree(plff); 162 return error; 163 } 164 165 plff->report = report; 166 plff->strong = strong; 167 plff->weak = weak; 168 plff->maxval = maxval; 169 170 *strong = 0x00; 171 *weak = 0x00; 172 usbhid_submit_report(hid, plff->report, USB_DIR_OUT); 173 } 174 175 hid_info(hid, "Force feedback for PantherLord/GreenAsia devices by Anssi Hannula <anssi.hannula@gmail.com>\n"); 176 177 return 0; 178 } 179 #else 180 static inline int plff_init(struct hid_device *hid) 181 { 182 return 0; 183 } 184 #endif 185 186 static int pl_probe(struct hid_device *hdev, const struct hid_device_id *id) 187 { 188 int ret; 189 190 if (id->driver_data) 191 hdev->quirks |= HID_QUIRK_MULTI_INPUT; 192 193 ret = hid_parse(hdev); 194 if (ret) { 195 hid_err(hdev, "parse failed\n"); 196 goto err; 197 } 198 199 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT & ~HID_CONNECT_FF); 200 if (ret) { 201 hid_err(hdev, "hw start failed\n"); 202 goto err; 203 } 204 205 plff_init(hdev); 206 207 return 0; 208 err: 209 return ret; 210 } 211 212 static const struct hid_device_id pl_devices[] = { 213 { HID_USB_DEVICE(USB_VENDOR_ID_GAMERON, USB_DEVICE_ID_GAMERON_DUAL_PSX_ADAPTOR), 214 .driver_data = 1 }, /* Twin USB Joystick */ 215 { HID_USB_DEVICE(USB_VENDOR_ID_GAMERON, USB_DEVICE_ID_GAMERON_DUAL_PCS_ADAPTOR), 216 .driver_data = 1 }, /* Twin USB Joystick */ 217 { HID_USB_DEVICE(USB_VENDOR_ID_GREENASIA, 0x0003), }, 218 { HID_USB_DEVICE(USB_VENDOR_ID_JESS2, USB_DEVICE_ID_JESS2_COLOR_RUMBLE_PAD), }, 219 { } 220 }; 221 MODULE_DEVICE_TABLE(hid, pl_devices); 222 223 static struct hid_driver pl_driver = { 224 .name = "pantherlord", 225 .id_table = pl_devices, 226 .probe = pl_probe, 227 }; 228 module_hid_driver(pl_driver); 229 230 MODULE_LICENSE("GPL"); 231