drivers/hid/usbhid/hid-quirks.c

   1 /*
   2  *  USB HID quirks support for Linux
   3  *
   4  *  Copyright (c) 1999 Andreas Gal
   5  *  Copyright (c) 2000-2005 Vojtech Pavlik <vojtech@suse.cz>
   6  *  Copyright (c) 2005 Michael Haboustak <mike-@cinci.rr.com> for Concept2, Inc
   7  *  Copyright (c) 2006-2007 Jiri Kosina
   8  *  Copyright (c) 2007 Paul Walmsley
   9  */
  10
  11 /*
  12  * This program is free software; you can redistribute it and/or modify it
  13  * under the terms of the GNU General Public License as published by the Free
  14  * Software Foundation; either version 2 of the License, or (at your option)
  15  * any later version.
  16  */
  17
  18 #include <linux/hid.h>
  19 #include <linux/slab.h>
  20
  21 #include "../hid-ids.h"
  22
  23 /*
  24  * Alphabetically sorted blacklist by quirk type.
  25  */
  26
  27 static const struct hid_blacklist {
  28         __u16 idVendor;
  29         __u16 idProduct;
  30         __u32 quirks;
  31 } hid_blacklist[] = {
  32         { USB_VENDOR_ID_AASHIMA, USB_DEVICE_ID_AASHIMA_GAMEPAD, HID_QUIRK_BADPAD },
  33         { USB_VENDOR_ID_AASHIMA, USB_DEVICE_ID_AASHIMA_PREDATOR, HID_QUIRK_BADPAD },
  34         { USB_VENDOR_ID_ALPS, USB_DEVICE_ID_IBM_GAMEPAD, HID_QUIRK_BADPAD },
  35         { USB_VENDOR_ID_CHIC, USB_DEVICE_ID_CHIC_GAMEPAD, HID_QUIRK_BADPAD },
  36         { USB_VENDOR_ID_DWAV, USB_DEVICE_ID_EGALAX_TOUCHCONTROLLER, HID_QUIRK_MULTI_INPUT | HID_QUIRK_NOGET },
  37         { USB_VENDOR_ID_MOJO, USB_DEVICE_ID_RETRO_ADAPTER, HID_QUIRK_MULTI_INPUT },
  38         { USB_VENDOR_ID_HAPP, USB_DEVICE_ID_UGCI_DRIVING, HID_QUIRK_BADPAD | HID_QUIRK_MULTI_INPUT },
  39         { USB_VENDOR_ID_HAPP, USB_DEVICE_ID_UGCI_FLYING, HID_QUIRK_BADPAD | HID_QUIRK_MULTI_INPUT },
  40         { USB_VENDOR_ID_HAPP, USB_DEVICE_ID_UGCI_FIGHTING, HID_QUIRK_BADPAD | HID_QUIRK_MULTI_INPUT },
  41         { USB_VENDOR_ID_NATSU, USB_DEVICE_ID_NATSU_GAMEPAD, HID_QUIRK_BADPAD },
  42         { USB_VENDOR_ID_NEC, USB_DEVICE_ID_NEC_USB_GAME_PAD, HID_QUIRK_BADPAD },
  43         { USB_VENDOR_ID_NEXTWINDOW, USB_DEVICE_ID_NEXTWINDOW_TOUCHSCREEN, HID_QUIRK_MULTI_INPUT},
  44         { USB_VENDOR_ID_SAITEK, USB_DEVICE_ID_SAITEK_RUMBLEPAD, HID_QUIRK_BADPAD },
  45         { USB_VENDOR_ID_TOPMAX, USB_DEVICE_ID_TOPMAX_COBRAPAD, HID_QUIRK_BADPAD },
  46
  47         { USB_VENDOR_ID_AFATECH, USB_DEVICE_ID_AFATECH_AF9016, HID_QUIRK_FULLSPEED_INTERVAL },
  48
  49         { USB_VENDOR_ID_ETURBOTOUCH, USB_DEVICE_ID_ETURBOTOUCH, HID_QUIRK_MULTI_INPUT },
  50         { USB_VENDOR_ID_GREENASIA, USB_DEVICE_ID_GREENASIA_DUAL_USB_JOYPAD, HID_QUIRK_MULTI_INPUT },
  51         { USB_VENDOR_ID_PANTHERLORD, USB_DEVICE_ID_PANTHERLORD_TWIN_USB_JOYSTICK, HID_QUIRK_MULTI_INPUT | HID_QUIRK_SKIP_OUTPUT_REPORTS },
  52         { USB_VENDOR_ID_PLAYDOTCOM, USB_DEVICE_ID_PLAYDOTCOM_EMS_USBII, HID_QUIRK_MULTI_INPUT },
  53         { USB_VENDOR_ID_TOUCHPACK, USB_DEVICE_ID_TOUCHPACK_RTS, HID_QUIRK_MULTI_INPUT },
  54
  55         { USB_VENDOR_ID_ATEN, USB_DEVICE_ID_ATEN_UC100KM, HID_QUIRK_NOGET },
  56         { USB_VENDOR_ID_ATEN, USB_DEVICE_ID_ATEN_CS124U, HID_QUIRK_NOGET },
  57         { USB_VENDOR_ID_ATEN, USB_DEVICE_ID_ATEN_2PORTKVM, HID_QUIRK_NOGET },
  58         { USB_VENDOR_ID_ATEN, USB_DEVICE_ID_ATEN_4PORTKVM, HID_QUIRK_NOGET },
  59         { USB_VENDOR_ID_ATEN, USB_DEVICE_ID_ATEN_4PORTKVMC, HID_QUIRK_NOGET },
  60         { USB_VENDOR_ID_CH, USB_DEVICE_ID_CH_COMBATSTICK, HID_QUIRK_NOGET },
  61         { USB_VENDOR_ID_CH, USB_DEVICE_ID_CH_FLIGHT_SIM_ECLIPSE_YOKE, HID_QUIRK_NOGET },
  62         { USB_VENDOR_ID_CH, USB_DEVICE_ID_CH_FLIGHT_SIM_YOKE, HID_QUIRK_NOGET },
  63         { USB_VENDOR_ID_CH, USB_DEVICE_ID_CH_PRO_THROTTLE, HID_QUIRK_NOGET },
  64         { USB_VENDOR_ID_CH, USB_DEVICE_ID_CH_PRO_PEDALS, HID_QUIRK_NOGET },
  65         { USB_VENDOR_ID_CH, USB_DEVICE_ID_CH_3AXIS_5BUTTON_STICK, HID_QUIRK_NOGET },
  66         { USB_VENDOR_ID_CH, USB_DEVICE_ID_CH_AXIS_295, HID_QUIRK_NOGET },
  67         { USB_VENDOR_ID_DMI, USB_DEVICE_ID_DMI_ENC, HID_QUIRK_NOGET },
  68         { USB_VENDOR_ID_ELO, USB_DEVICE_ID_ELO_TS2700, HID_QUIRK_NOGET },
  69         { USB_VENDOR_ID_PRODIGE, USB_DEVICE_ID_PRODIGE_CORDLESS, HID_QUIRK_NOGET },
  70         { USB_VENDOR_ID_QUANTA, USB_DEVICE_ID_PIXART_IMAGING_INC_OPTICAL_TOUCH_SCREEN, HID_QUIRK_NOGET },
  71         { USB_VENDOR_ID_SUN, USB_DEVICE_ID_RARITAN_KVM_DONGLE, HID_QUIRK_NOGET },
  72         { USB_VENDOR_ID_SYMBOL, USB_DEVICE_ID_SYMBOL_SCANNER_1, HID_QUIRK_NOGET },
  73         { USB_VENDOR_ID_SYMBOL, USB_DEVICE_ID_SYMBOL_SCANNER_2, HID_QUIRK_NOGET },
  74         { USB_VENDOR_ID_TURBOX, USB_DEVICE_ID_TURBOX_KEYBOARD, HID_QUIRK_NOGET },
  75         { USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_PF1209, HID_QUIRK_MULTI_INPUT },
  76         { USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_WP4030U, HID_QUIRK_MULTI_INPUT },
  77         { USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_KNA5, HID_QUIRK_MULTI_INPUT },
  78         { USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_TWA60, HID_QUIRK_MULTI_INPUT },
  79         { USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_WP5540U, HID_QUIRK_MULTI_INPUT },
  80         { USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_WP8060U, HID_QUIRK_MULTI_INPUT },
  81         { USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_MEDIA_TABLET_10_6_INCH, HID_QUIRK_MULTI_INPUT },
  82         { USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_MEDIA_TABLET_14_1_INCH, HID_QUIRK_MULTI_INPUT },
  83         { USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_QUAD_USB_JOYPAD, HID_QUIRK_NOGET | HID_QUIRK_MULTI_INPUT },
  84
  85         { USB_VENDOR_ID_WISEGROUP_LTD2, USB_DEVICE_ID_SMARTJOY_DUAL_PLUS, HID_QUIRK_NOGET | HID_QUIRK_MULTI_INPUT },
  86
  87         { USB_VENDOR_ID_PI_ENGINEERING, USB_DEVICE_ID_PI_ENGINEERING_VEC_USB_FOOTPEDAL, HID_QUIRK_HIDINPUT_FORCE },
  88
  89         { USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_MULTI_TOUCH, HID_QUIRK_MULTI_INPUT },
  90         { USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_WIRELESS, HID_QUIRK_MULTI_INPUT },
  91         { USB_VENDOR_ID_SIGMA_MICRO, USB_DEVICE_ID_SIGMA_MICRO_KEYBOARD, HID_QUIRK_NO_INIT_REPORTS },
  92         { 0, 0 }
  93 };
  94
  95 /* Dynamic HID quirks list - specified at runtime */
  96 struct quirks_list_struct {
  97         struct hid_blacklist hid_bl_item;
  98         struct list_head node;
  99 };
 100
 101 static LIST_HEAD(dquirks_list);
 102 static DECLARE_RWSEM(dquirks_rwsem);
 103
 104 /* Runtime ("dynamic") quirks manipulation functions */
 105
 106 /**
 107  * usbhid_exists_dquirk: find any dynamic quirks for a USB HID device
 108  * @idVendor: the 16-bit USB vendor ID, in native byteorder
 109  * @idProduct: the 16-bit USB product ID, in native byteorder
 110  *
 111  * Description:
 112  *         Scans dquirks_list for a matching dynamic quirk and returns
 113  *         the pointer to the relevant struct hid_blacklist if found.
 114  *         Must be called with a read lock held on dquirks_rwsem.
 115  *
 116  * Returns: NULL if no quirk found, struct hid_blacklist * if found.
 117  */
 118 static struct hid_blacklist *usbhid_exists_dquirk(const u16 idVendor,
 119                 const u16 idProduct)
 120 {
 121         struct quirks_list_struct *q;
 122         struct hid_blacklist *bl_entry = NULL;
 123
 124         list_for_each_entry(q, &dquirks_list, node) {
 125                 if (q->hid_bl_item.idVendor == idVendor &&
 126                                 q->hid_bl_item.idProduct == idProduct) {
 127                         bl_entry = &q->hid_bl_item;
 128                         break;
 129                 }
 130         }
 131
 132         if (bl_entry != NULL)
 133                 dbg_hid("Found dynamic quirk 0x%x for USB HID vendor 0x%hx prod 0x%hx\n",
 134                                 bl_entry->quirks, bl_entry->idVendor,
 135                                 bl_entry->idProduct);
 136
 137         return bl_entry;
 138 }
 139
 140
 141 /**
 142  * usbhid_modify_dquirk: add/replace a HID quirk
 143  * @idVendor: the 16-bit USB vendor ID, in native byteorder
 144  * @idProduct: the 16-bit USB product ID, in native byteorder
 145  * @quirks: the u32 quirks value to add/replace
 146  *
 147  * Description:
 148  *         If an dynamic quirk exists in memory for this (idVendor,
 149  *         idProduct) pair, replace its quirks value with what was
 150  *         provided.  Otherwise, add the quirk to the dynamic quirks list.
 151  *
 152  * Returns: 0 OK, -error on failure.
 153  */
 154 static int usbhid_modify_dquirk(const u16 idVendor, const u16 idProduct,
 155                                 const u32 quirks)
 156 {
 157         struct quirks_list_struct *q_new, *q;
 158         int list_edited = 0;
 159
 160         if (!idVendor) {
 161                 dbg_hid("Cannot add a quirk with idVendor = 0\n");
 162                 return -EINVAL;
 163         }
 164
 165         q_new = kmalloc(sizeof(struct quirks_list_struct), GFP_KERNEL);
 166         if (!q_new) {
 167                 dbg_hid("Could not allocate quirks_list_struct\n");
 168                 return -ENOMEM;
 169         }
 170
 171         q_new->hid_bl_item.idVendor = idVendor;
 172         q_new->hid_bl_item.idProduct = idProduct;
 173         q_new->hid_bl_item.quirks = quirks;
 174
 175         down_write(&dquirks_rwsem);
 176
 177         list_for_each_entry(q, &dquirks_list, node) {
 178
 179                 if (q->hid_bl_item.idVendor == idVendor &&
 180                                 q->hid_bl_item.idProduct == idProduct) {
 181
 182                         list_replace(&q->node, &q_new->node);
 183                         kfree(q);
 184                         list_edited = 1;
 185                         break;
 186
 187                 }
 188
 189         }
 190
 191         if (!list_edited)
 192                 list_add_tail(&q_new->node, &dquirks_list);
 193
 194         up_write(&dquirks_rwsem);
 195
 196         return 0;
 197 }
 198
 199 /**
 200  * usbhid_remove_all_dquirks: remove all runtime HID quirks from memory
 201  *
 202  * Description:
 203  *         Free all memory associated with dynamic quirks - called before
 204  *         module unload.
 205  *
 206  */
 207 static void usbhid_remove_all_dquirks(void)
 208 {
 209         struct quirks_list_struct *q, *temp;
 210
 211         down_write(&dquirks_rwsem);
 212         list_for_each_entry_safe(q, temp, &dquirks_list, node) {
 213                 list_del(&q->node);
 214                 kfree(q);
 215         }
 216         up_write(&dquirks_rwsem);
 217
 218 }
 219
 220 /**
 221  * usbhid_quirks_init: apply USB HID quirks specified at module load time
 222  */
 223 int usbhid_quirks_init(char **quirks_param)
 224 {
 225         u16 idVendor, idProduct;
 226         u32 quirks;
 227         int n = 0, m;
 228
 229         for (; n < MAX_USBHID_BOOT_QUIRKS && quirks_param[n]; n++) {
 230
 231                 m = sscanf(quirks_param[n], "0x%hx:0x%hx:0x%x",
 232                                 &idVendor, &idProduct, &quirks);
 233
 234                 if (m != 3 ||
 235                                 usbhid_modify_dquirk(idVendor, idProduct, quirks) != 0) {
 236                         printk(KERN_WARNING
 237                                         "Could not parse HID quirk module param %s\n",
 238                                         quirks_param[n]);
 239                 }
 240         }
 241
 242         return 0;
 243 }
 244
 245 /**
 246  * usbhid_quirks_exit: release memory associated with dynamic_quirks
 247  *
 248  * Description:
 249  *     Release all memory associated with dynamic quirks.  Called upon
 250  *     module unload.
 251  *
 252  * Returns: nothing
 253  */
 254 void usbhid_quirks_exit(void)
 255 {
 256         usbhid_remove_all_dquirks();
 257 }
 258
 259 /**
 260  * usbhid_exists_squirk: return any static quirks for a USB HID device
 261  * @idVendor: the 16-bit USB vendor ID, in native byteorder
 262  * @idProduct: the 16-bit USB product ID, in native byteorder
 263  *
 264  * Description:
 265  *     Given a USB vendor ID and product ID, return a pointer to
 266  *     the hid_blacklist entry associated with that device.
 267  *
 268  * Returns: pointer if quirk found, or NULL if no quirks found.
 269  */
 270 static const struct hid_blacklist *usbhid_exists_squirk(const u16 idVendor,
 271                 const u16 idProduct)
 272 {
 273         const struct hid_blacklist *bl_entry = NULL;
 274         int n = 0;
 275
 276         for (; hid_blacklist[n].idVendor; n++)
 277                 if (hid_blacklist[n].idVendor == idVendor &&
 278                                 hid_blacklist[n].idProduct == idProduct)
 279                         bl_entry = &hid_blacklist[n];
 280
 281         if (bl_entry != NULL)
 282                 dbg_hid("Found squirk 0x%x for USB HID vendor 0x%hx prod 0x%hx\n",
 283                                 bl_entry->quirks, bl_entry->idVendor,
 284                                 bl_entry->idProduct);
 285         return bl_entry;
 286 }
 287
 288 /**
 289  * usbhid_lookup_quirk: return any quirks associated with a USB HID device
 290  * @idVendor: the 16-bit USB vendor ID, in native byteorder
 291  * @idProduct: the 16-bit USB product ID, in native byteorder
 292  *
 293  * Description:
 294  *     Given a USB vendor ID and product ID, return any quirks associated
 295  *     with that device.
 296  *
 297  * Returns: a u32 quirks value.
 298  */
 299 u32 usbhid_lookup_quirk(const u16 idVendor, const u16 idProduct)
 300 {
 301         u32 quirks = 0;
 302         const struct hid_blacklist *bl_entry = NULL;
 303
 304         /* NCR devices must not be queried for reports */
 305         if (idVendor == USB_VENDOR_ID_NCR &&
 306                         idProduct >= USB_DEVICE_ID_NCR_FIRST &&
 307                         idProduct <= USB_DEVICE_ID_NCR_LAST)
 308                         return HID_QUIRK_NO_INIT_REPORTS;
 309
 310         down_read(&dquirks_rwsem);
 311         bl_entry = usbhid_exists_dquirk(idVendor, idProduct);
 312         if (!bl_entry)
 313                 bl_entry = usbhid_exists_squirk(idVendor, idProduct);
 314         if (bl_entry)
 315                 quirks = bl_entry->quirks;
 316         up_read(&dquirks_rwsem);
 317
 318         return quirks;
 319 }
 320
 321 EXPORT_SYMBOL_GPL(usbhid_lookup_quirk);