1 /* 2 * Force feedback support for various HID compliant devices by ThrustMaster: 3 * ThrustMaster FireStorm Dual Power 2 4 * and possibly others whose device ids haven't been added. 5 * 6 * Modified to support ThrustMaster devices by Zinx Verituse 7 * on 2003-01-25 from the Logitech force feedback driver, 8 * which is by Johann Deneux. 9 * 10 * Copyright (c) 2003 Zinx Verituse <zinx@epicsol.org> 11 * Copyright (c) 2002 Johann Deneux 12 */ 13 14 /* 15 * This program is free software; you can redistribute it and/or modify 16 * it under the terms of the GNU General Public License as published by 17 * the Free Software Foundation; either version 2 of the License, or 18 * (at your option) any later version. 19 * 20 * This program is distributed in the hope that it will be useful, 21 * but WITHOUT ANY WARRANTY; without even the implied warranty of 22 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 23 * GNU General Public License for more details. 24 * 25 * You should have received a copy of the GNU General Public License 26 * along with this program; if not, write to the Free Software 27 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 28 */ 29 30 #include <linux/hid.h> 31 #include <linux/input.h> 32 #include <linux/slab.h> 33 #include <linux/module.h> 34 35 #include "hid-ids.h" 36 37 static const signed short ff_rumble[] = { 38 FF_RUMBLE, 39 -1 40 }; 41 42 static const signed short ff_joystick[] = { 43 FF_CONSTANT, 44 -1 45 }; 46 47 #ifdef CONFIG_THRUSTMASTER_FF 48 49 /* Usages for thrustmaster devices I know about */ 50 #define THRUSTMASTER_USAGE_FF (HID_UP_GENDESK | 0xbb) 51 52 struct tmff_device { 53 struct hid_report *report; 54 struct hid_field *ff_field; 55 }; 56 57 /* Changes values from 0 to 0xffff into values from minimum to maximum */ 58 static inline int tmff_scale_u16(unsigned int in, int minimum, int maximum) 59 { 60 int ret; 61 62 ret = (in * (maximum - minimum) / 0xffff) + minimum; 63 if (ret < minimum) 64 return minimum; 65 if (ret > maximum) 66 return maximum; 67 return ret; 68 } 69 70 /* Changes values from -0x80 to 0x7f into values from minimum to maximum */ 71 static inline int tmff_scale_s8(int in, int minimum, int maximum) 72 { 73 int ret; 74 75 ret = (((in + 0x80) * (maximum - minimum)) / 0xff) + minimum; 76 if (ret < minimum) 77 return minimum; 78 if (ret > maximum) 79 return maximum; 80 return ret; 81 } 82 83 static int tmff_play(struct input_dev *dev, void *data, 84 struct ff_effect *effect) 85 { 86 struct hid_device *hid = input_get_drvdata(dev); 87 struct tmff_device *tmff = data; 88 struct hid_field *ff_field = tmff->ff_field; 89 int x, y; 90 int left, right; /* Rumbling */ 91 92 switch (effect->type) { 93 case FF_CONSTANT: 94 x = tmff_scale_s8(effect->u.ramp.start_level, 95 ff_field->logical_minimum, 96 ff_field->logical_maximum); 97 y = tmff_scale_s8(effect->u.ramp.end_level, 98 ff_field->logical_minimum, 99 ff_field->logical_maximum); 100 101 dbg_hid("(x, y)=(%04x, %04x)\n", x, y); 102 ff_field->value[0] = x; 103 ff_field->value[1] = y; 104 hid_hw_request(hid, tmff->report, HID_REQ_SET_REPORT); 105 break; 106 107 case FF_RUMBLE: 108 left = tmff_scale_u16(effect->u.rumble.weak_magnitude, 109 ff_field->logical_minimum, 110 ff_field->logical_maximum); 111 right = tmff_scale_u16(effect->u.rumble.strong_magnitude, 112 ff_field->logical_minimum, 113 ff_field->logical_maximum); 114 115 dbg_hid("(left,right)=(%08x, %08x)\n", left, right); 116 ff_field->value[0] = left; 117 ff_field->value[1] = right; 118 hid_hw_request(hid, tmff->report, HID_REQ_SET_REPORT); 119 break; 120 } 121 return 0; 122 } 123 124 static int tmff_init(struct hid_device *hid, const signed short *ff_bits) 125 { 126 struct tmff_device *tmff; 127 struct hid_report *report; 128 struct list_head *report_list; 129 struct hid_input *hidinput = list_entry(hid->inputs.next, 130 struct hid_input, list); 131 struct input_dev *input_dev = hidinput->input; 132 int error; 133 int i; 134 135 tmff = kzalloc(sizeof(struct tmff_device), GFP_KERNEL); 136 if (!tmff) 137 return -ENOMEM; 138 139 /* Find the report to use */ 140 report_list = &hid->report_enum[HID_OUTPUT_REPORT].report_list; 141 list_for_each_entry(report, report_list, list) { 142 int fieldnum; 143 144 for (fieldnum = 0; fieldnum < report->maxfield; ++fieldnum) { 145 struct hid_field *field = report->field[fieldnum]; 146 147 if (field->maxusage <= 0) 148 continue; 149 150 switch (field->usage[0].hid) { 151 case THRUSTMASTER_USAGE_FF: 152 if (field->report_count < 2) { 153 hid_warn(hid, "ignoring FF field with report_count < 2\n"); 154 continue; 155 } 156 157 if (field->logical_maximum == 158 field->logical_minimum) { 159 hid_warn(hid, "ignoring FF field with logical_maximum == logical_minimum\n"); 160 continue; 161 } 162 163 if (tmff->report && tmff->report != report) { 164 hid_warn(hid, "ignoring FF field in other report\n"); 165 continue; 166 } 167 168 if (tmff->ff_field && tmff->ff_field != field) { 169 hid_warn(hid, "ignoring duplicate FF field\n"); 170 continue; 171 } 172 173 tmff->report = report; 174 tmff->ff_field = field; 175 176 for (i = 0; ff_bits[i] >= 0; i++) 177 set_bit(ff_bits[i], input_dev->ffbit); 178 179 break; 180 181 default: 182 hid_warn(hid, "ignoring unknown output usage %08x\n", 183 field->usage[0].hid); 184 continue; 185 } 186 } 187 } 188 189 if (!tmff->report) { 190 hid_err(hid, "can't find FF field in output reports\n"); 191 error = -ENODEV; 192 goto fail; 193 } 194 195 error = input_ff_create_memless(input_dev, tmff, tmff_play); 196 if (error) 197 goto fail; 198 199 hid_info(hid, "force feedback for ThrustMaster devices by Zinx Verituse <zinx@epicsol.org>\n"); 200 return 0; 201 202 fail: 203 kfree(tmff); 204 return error; 205 } 206 #else 207 static inline int tmff_init(struct hid_device *hid, const signed short *ff_bits) 208 { 209 return 0; 210 } 211 #endif 212 213 static int tm_probe(struct hid_device *hdev, const struct hid_device_id *id) 214 { 215 int ret; 216 217 ret = hid_parse(hdev); 218 if (ret) { 219 hid_err(hdev, "parse failed\n"); 220 goto err; 221 } 222 223 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT & ~HID_CONNECT_FF); 224 if (ret) { 225 hid_err(hdev, "hw start failed\n"); 226 goto err; 227 } 228 229 tmff_init(hdev, (void *)id->driver_data); 230 231 return 0; 232 err: 233 return ret; 234 } 235 236 static const struct hid_device_id tm_devices[] = { 237 { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb300), 238 .driver_data = (unsigned long)ff_rumble }, 239 { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb304), /* FireStorm Dual Power 2 (and 3) */ 240 .driver_data = (unsigned long)ff_rumble }, 241 { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb323), /* Dual Trigger 3-in-1 (PC Mode) */ 242 .driver_data = (unsigned long)ff_rumble }, 243 { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb324), /* Dual Trigger 3-in-1 (PS3 Mode) */ 244 .driver_data = (unsigned long)ff_rumble }, 245 { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb651), /* FGT Rumble Force Wheel */ 246 .driver_data = (unsigned long)ff_rumble }, 247 { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb653), /* RGT Force Feedback CLUTCH Raging Wheel */ 248 .driver_data = (unsigned long)ff_joystick }, 249 { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb654), /* FGT Force Feedback Wheel */ 250 .driver_data = (unsigned long)ff_joystick }, 251 { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb65a), /* F430 Force Feedback Wheel */ 252 .driver_data = (unsigned long)ff_joystick }, 253 { } 254 }; 255 MODULE_DEVICE_TABLE(hid, tm_devices); 256 257 static struct hid_driver tm_driver = { 258 .name = "thrustmaster", 259 .id_table = tm_devices, 260 .probe = tm_probe, 261 }; 262 module_hid_driver(tm_driver); 263 264 MODULE_LICENSE("GPL"); 265