drivers/hid/hid-dr.c

   1 /*
   2  * Force feedback support for DragonRise Inc. game controllers
   3  *
   4  * From what I have gathered, these devices are mass produced in China and are
   5  * distributed under several vendors. They often share the same design as
   6  * the original PlayStation DualShock controller.
   7  *
   8  * 0079:0006 "DragonRise Inc.   Generic   USB  Joystick  "
   9  *  - tested with a Tesun USB-703 game controller.
  10  *
  11  * Copyright (c) 2009 Richard Walmsley <richwalm@gmail.com>
  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/input.h>
  31 #include <linux/slab.h>
  32 #include <linux/usb.h>
  33 #include <linux/hid.h>
  34 #include <linux/module.h>
  35
  36 #include "hid-ids.h"
  37
  38 #ifdef CONFIG_DRAGONRISE_FF
  39 #include "usbhid/usbhid.h"
  40
  41 struct drff_device {
  42         struct hid_report *report;
  43 };
  44
  45 static int drff_play(struct input_dev *dev, void *data,
  46                                  struct ff_effect *effect)
  47 {
  48         struct hid_device *hid = input_get_drvdata(dev);
  49         struct drff_device *drff = data;
  50         int strong, weak;
  51
  52         strong = effect->u.rumble.strong_magnitude;
  53         weak = effect->u.rumble.weak_magnitude;
  54
  55         dbg_hid("called with 0x%04x 0x%04x", strong, weak);
  56
  57         if (strong || weak) {
  58                 strong = strong * 0xff / 0xffff;
  59                 weak = weak * 0xff / 0xffff;
  60
  61                 /* While reverse engineering this device, I found that when
  62                    this value is set, it causes the strong rumble to function
  63                    at a near maximum speed, so we'll bypass it. */
  64                 if (weak == 0x0a)
  65                         weak = 0x0b;
  66
  67                 drff->report->field[0]->value[0] = 0x51;
  68                 drff->report->field[0]->value[1] = 0x00;
  69                 drff->report->field[0]->value[2] = weak;
  70                 drff->report->field[0]->value[4] = strong;
  71                 usbhid_submit_report(hid, drff->report, USB_DIR_OUT);
  72
  73                 drff->report->field[0]->value[0] = 0xfa;
  74                 drff->report->field[0]->value[1] = 0xfe;
  75         } else {
  76                 drff->report->field[0]->value[0] = 0xf3;
  77                 drff->report->field[0]->value[1] = 0x00;
  78         }
  79
  80         drff->report->field[0]->value[2] = 0x00;
  81         drff->report->field[0]->value[4] = 0x00;
  82         dbg_hid("running with 0x%02x 0x%02x", strong, weak);
  83         usbhid_submit_report(hid, drff->report, USB_DIR_OUT);
  84
  85         return 0;
  86 }
  87
  88 static int drff_init(struct hid_device *hid)
  89 {
  90         struct drff_device *drff;
  91         struct hid_report *report;
  92         struct hid_input *hidinput = list_first_entry(&hid->inputs,
  93                                                 struct hid_input, list);
  94         struct list_head *report_list =
  95                         &hid->report_enum[HID_OUTPUT_REPORT].report_list;
  96         struct input_dev *dev = hidinput->input;
  97         int error;
  98
  99         if (list_empty(report_list)) {
 100                 hid_err(hid, "no output reports found\n");
 101                 return -ENODEV;
 102         }
 103
 104         report = list_first_entry(report_list, struct hid_report, list);
 105         if (report->maxfield < 1) {
 106                 hid_err(hid, "no fields in the report\n");
 107                 return -ENODEV;
 108         }
 109
 110         if (report->field[0]->report_count < 7) {
 111                 hid_err(hid, "not enough values in the field\n");
 112                 return -ENODEV;
 113         }
 114
 115         drff = kzalloc(sizeof(struct drff_device), GFP_KERNEL);
 116         if (!drff)
 117                 return -ENOMEM;
 118
 119         set_bit(FF_RUMBLE, dev->ffbit);
 120
 121         error = input_ff_create_memless(dev, drff, drff_play);
 122         if (error) {
 123                 kfree(drff);
 124                 return error;
 125         }
 126
 127         drff->report = report;
 128         drff->report->field[0]->value[0] = 0xf3;
 129         drff->report->field[0]->value[1] = 0x00;
 130         drff->report->field[0]->value[2] = 0x00;
 131         drff->report->field[0]->value[3] = 0x00;
 132         drff->report->field[0]->value[4] = 0x00;
 133         drff->report->field[0]->value[5] = 0x00;
 134         drff->report->field[0]->value[6] = 0x00;
 135         usbhid_submit_report(hid, drff->report, USB_DIR_OUT);
 136
 137         hid_info(hid, "Force Feedback for DragonRise Inc. "
 138                  "game controllers by Richard Walmsley <richwalm@gmail.com>\n");
 139
 140         return 0;
 141 }
 142 #else
 143 static inline int drff_init(struct hid_device *hid)
 144 {
 145         return 0;
 146 }
 147 #endif
 148
 149 /*
 150  * The original descriptor of joystick with PID 0x0011, represented by DVTech PC
 151  * JS19. It seems both copied from another device and a result of confusion
 152  * either about the specification or about the program used to create the
 153  * descriptor. In any case, it's a wonder it works on Windows.
 154  *
 155  *  Usage Page (Desktop),             ; Generic desktop controls (01h)
 156  *  Usage (Joystik),                  ; Joystik (04h, application collection)
 157  *  Collection (Application),
 158  *    Collection (Logical),
 159  *      Report Size (8),
 160  *      Report Count (5),
 161  *      Logical Minimum (0),
 162  *      Logical Maximum (255),
 163  *      Physical Minimum (0),
 164  *      Physical Maximum (255),
 165  *      Usage (X),                    ; X (30h, dynamic value)
 166  *      Usage (X),                    ; X (30h, dynamic value)
 167  *      Usage (X),                    ; X (30h, dynamic value)
 168  *      Usage (X),                    ; X (30h, dynamic value)
 169  *      Usage (Y),                    ; Y (31h, dynamic value)
 170  *      Input (Variable),
 171  *      Report Size (4),
 172  *      Report Count (1),
 173  *      Logical Maximum (7),
 174  *      Physical Maximum (315),
 175  *      Unit (Degrees),
 176  *      Usage (00h),
 177  *      Input (Variable, Null State),
 178  *      Unit,
 179  *      Report Size (1),
 180  *      Report Count (10),
 181  *      Logical Maximum (1),
 182  *      Physical Maximum (1),
 183  *      Usage Page (Button),          ; Button (09h)
 184  *      Usage Minimum (01h),
 185  *      Usage Maximum (0Ah),
 186  *      Input (Variable),
 187  *      Usage Page (FF00h),           ; FF00h, vendor-defined
 188  *      Report Size (1),
 189  *      Report Count (10),
 190  *      Logical Maximum (1),
 191  *      Physical Maximum (1),
 192  *      Usage (01h),
 193  *      Input (Variable),
 194  *    End Collection,
 195  *    Collection (Logical),
 196  *      Report Size (8),
 197  *      Report Count (4),
 198  *      Physical Maximum (255),
 199  *      Logical Maximum (255),
 200  *      Usage (02h),
 201  *      Output (Variable),
 202  *    End Collection,
 203  *  End Collection
 204  */
 205
 206 /* Size of the original descriptor of the PID 0x0011 joystick */
 207 #define PID0011_RDESC_ORIG_SIZE 101
 208
 209 /* Fixed report descriptor for PID 0x011 joystick */
 210 static __u8 pid0011_rdesc_fixed[] = {
 211         0x05, 0x01,         /*  Usage Page (Desktop),           */
 212         0x09, 0x04,         /*  Usage (Joystik),                */
 213         0xA1, 0x01,         /*  Collection (Application),       */
 214         0xA1, 0x02,         /*      Collection (Logical),       */
 215         0x14,               /*          Logical Minimum (0),    */
 216         0x75, 0x08,         /*          Report Size (8),        */
 217         0x95, 0x03,         /*          Report Count (3),       */
 218         0x81, 0x01,         /*          Input (Constant),       */
 219         0x26, 0xFF, 0x00,   /*          Logical Maximum (255),  */
 220         0x95, 0x02,         /*          Report Count (2),       */
 221         0x09, 0x30,         /*          Usage (X),              */
 222         0x09, 0x31,         /*          Usage (Y),              */
 223         0x81, 0x02,         /*          Input (Variable),       */
 224         0x75, 0x01,         /*          Report Size (1),        */
 225         0x95, 0x04,         /*          Report Count (4),       */
 226         0x81, 0x01,         /*          Input (Constant),       */
 227         0x25, 0x01,         /*          Logical Maximum (1),    */
 228         0x95, 0x0A,         /*          Report Count (10),      */
 229         0x05, 0x09,         /*          Usage Page (Button),    */
 230         0x19, 0x01,         /*          Usage Minimum (01h),    */
 231         0x29, 0x0A,         /*          Usage Maximum (0Ah),    */
 232         0x81, 0x02,         /*          Input (Variable),       */
 233         0x95, 0x0A,         /*          Report Count (10),      */
 234         0x81, 0x01,         /*          Input (Constant),       */
 235         0xC0,               /*      End Collection,             */
 236         0xC0                /*  End Collection                  */
 237 };
 238
 239 static __u8 *dr_report_fixup(struct hid_device *hdev, __u8 *rdesc,
 240                                 unsigned int *rsize)
 241 {
 242         switch (hdev->product) {
 243         case 0x0011:
 244                 if (*rsize == PID0011_RDESC_ORIG_SIZE) {
 245                         rdesc = pid0011_rdesc_fixed;
 246                         *rsize = sizeof(pid0011_rdesc_fixed);
 247                 }
 248                 break;
 249         }
 250         return rdesc;
 251 }
 252
 253 static int dr_probe(struct hid_device *hdev, const struct hid_device_id *id)
 254 {
 255         int ret;
 256
 257         dev_dbg(&hdev->dev, "DragonRise Inc. HID hardware probe...");
 258
 259         ret = hid_parse(hdev);
 260         if (ret) {
 261                 hid_err(hdev, "parse failed\n");
 262                 goto err;
 263         }
 264
 265         ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT & ~HID_CONNECT_FF);
 266         if (ret) {
 267                 hid_err(hdev, "hw start failed\n");
 268                 goto err;
 269         }
 270
 271         switch (hdev->product) {
 272         case 0x0006:
 273                 ret = drff_init(hdev);
 274                 if (ret) {
 275                         dev_err(&hdev->dev, "force feedback init failed\n");
 276                         hid_hw_stop(hdev);
 277                         goto err;
 278                 }
 279                 break;
 280         }
 281
 282         return 0;
 283 err:
 284         return ret;
 285 }
 286
 287 static const struct hid_device_id dr_devices[] = {
 288         { HID_USB_DEVICE(USB_VENDOR_ID_DRAGONRISE, 0x0006),  },
 289         { HID_USB_DEVICE(USB_VENDOR_ID_DRAGONRISE, 0x0011),  },
 290         { }
 291 };
 292 MODULE_DEVICE_TABLE(hid, dr_devices);
 293
 294 static struct hid_driver dr_driver = {
 295         .name = "dragonrise",
 296         .id_table = dr_devices,
 297         .report_fixup = dr_report_fixup,
 298         .probe = dr_probe,
 299 };
 300
 301 static int __init dr_init(void)
 302 {
 303         return hid_register_driver(&dr_driver);
 304 }
 305
 306 static void __exit dr_exit(void)
 307 {
 308         hid_unregister_driver(&dr_driver);
 309 }
 310
 311 module_init(dr_init);
 312 module_exit(dr_exit);
 313 MODULE_LICENSE("GPL");