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_DWAV_EGALAX_MULTITOUCH, HID_QUIRK_MULTI_INPUT },
  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_PANTHERLORD, USB_DEVICE_ID_PANTHERLORD_TWIN_USB_JOYSTICK, HID_QUIRK_MULTI_INPUT | HID_QUIRK_SKIP_OUTPUT_REPORTS },
  51         { USB_VENDOR_ID_PLAYDOTCOM, USB_DEVICE_ID_PLAYDOTCOM_EMS_USBII, HID_QUIRK_MULTI_INPUT },
  52         { USB_VENDOR_ID_TOUCHPACK, USB_DEVICE_ID_TOUCHPACK_RTS, HID_QUIRK_MULTI_INPUT },
  53
  54         { USB_VENDOR_ID_ATEN, USB_DEVICE_ID_ATEN_UC100KM, HID_QUIRK_NOGET },
  55         { USB_VENDOR_ID_ATEN, USB_DEVICE_ID_ATEN_CS124U, HID_QUIRK_NOGET },
  56         { USB_VENDOR_ID_ATEN, USB_DEVICE_ID_ATEN_2PORTKVM, HID_QUIRK_NOGET },
  57         { USB_VENDOR_ID_ATEN, USB_DEVICE_ID_ATEN_4PORTKVM, HID_QUIRK_NOGET },
  58         { USB_VENDOR_ID_ATEN, USB_DEVICE_ID_ATEN_4PORTKVMC, HID_QUIRK_NOGET },
  59         { USB_VENDOR_ID_CH, USB_DEVICE_ID_CH_COMBATSTICK, HID_QUIRK_NOGET },
  60         { USB_VENDOR_ID_CH, USB_DEVICE_ID_CH_FLIGHT_SIM_ECLIPSE_YOKE, HID_QUIRK_NOGET },
  61         { USB_VENDOR_ID_CH, USB_DEVICE_ID_CH_FLIGHT_SIM_YOKE, HID_QUIRK_NOGET },
  62         { USB_VENDOR_ID_CH, USB_DEVICE_ID_CH_PRO_PEDALS, HID_QUIRK_NOGET },
  63         { USB_VENDOR_ID_CH, USB_DEVICE_ID_CH_3AXIS_5BUTTON_STICK, HID_QUIRK_NOGET },
  64         { USB_VENDOR_ID_DMI, USB_DEVICE_ID_DMI_ENC, HID_QUIRK_NOGET },
  65         { USB_VENDOR_ID_ELO, USB_DEVICE_ID_ELO_TS2700, HID_QUIRK_NOGET },
  66         { USB_VENDOR_ID_PRODIGE, USB_DEVICE_ID_PRODIGE_CORDLESS, HID_QUIRK_NOGET },
  67         { USB_VENDOR_ID_QUANTA, USB_DEVICE_ID_PIXART_IMAGING_INC_OPTICAL_TOUCH_SCREEN, HID_QUIRK_NOGET },
  68         { USB_VENDOR_ID_SUN, USB_DEVICE_ID_RARITAN_KVM_DONGLE, HID_QUIRK_NOGET },
  69         { USB_VENDOR_ID_TURBOX, USB_DEVICE_ID_TURBOX_KEYBOARD, HID_QUIRK_NOGET },
  70         { USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_PF1209, HID_QUIRK_MULTI_INPUT },
  71         { USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_WP4030U, HID_QUIRK_MULTI_INPUT },
  72         { USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_DUAL_USB_JOYPAD, HID_QUIRK_NOGET | HID_QUIRK_MULTI_INPUT | HID_QUIRK_SKIP_OUTPUT_REPORTS },
  73         { USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_QUAD_USB_JOYPAD, HID_QUIRK_NOGET | HID_QUIRK_MULTI_INPUT },
  74
  75         { USB_VENDOR_ID_WISEGROUP_LTD, USB_DEVICE_ID_SMARTJOY_DUAL_PLUS, HID_QUIRK_NOGET | HID_QUIRK_MULTI_INPUT },
  76         { USB_VENDOR_ID_WISEGROUP_LTD2, USB_DEVICE_ID_SMARTJOY_DUAL_PLUS, HID_QUIRK_NOGET | HID_QUIRK_MULTI_INPUT },
  77
  78         { 0, 0 }
  79 };
  80
  81 /* Dynamic HID quirks list - specified at runtime */
  82 struct quirks_list_struct {
  83         struct hid_blacklist hid_bl_item;
  84         struct list_head node;
  85 };
  86
  87 static LIST_HEAD(dquirks_list);
  88 static DECLARE_RWSEM(dquirks_rwsem);
  89
  90 /* Runtime ("dynamic") quirks manipulation functions */
  91
  92 /**
  93  * usbhid_exists_dquirk: find any dynamic quirks for a USB HID device
  94  * @idVendor: the 16-bit USB vendor ID, in native byteorder
  95  * @idProduct: the 16-bit USB product ID, in native byteorder
  96  *
  97  * Description:
  98  *         Scans dquirks_list for a matching dynamic quirk and returns
  99  *         the pointer to the relevant struct hid_blacklist if found.
 100  *         Must be called with a read lock held on dquirks_rwsem.
 101  *
 102  * Returns: NULL if no quirk found, struct hid_blacklist * if found.
 103  */
 104 static struct hid_blacklist *usbhid_exists_dquirk(const u16 idVendor,
 105                 const u16 idProduct)
 106 {
 107         struct quirks_list_struct *q;
 108         struct hid_blacklist *bl_entry = NULL;
 109
 110         list_for_each_entry(q, &dquirks_list, node) {
 111                 if (q->hid_bl_item.idVendor == idVendor &&
 112                                 q->hid_bl_item.idProduct == idProduct) {
 113                         bl_entry = &q->hid_bl_item;
 114                         break;
 115                 }
 116         }
 117
 118         if (bl_entry != NULL)
 119                 dbg_hid("Found dynamic quirk 0x%x for USB HID vendor 0x%hx prod 0x%hx\n",
 120                                 bl_entry->quirks, bl_entry->idVendor,
 121                                 bl_entry->idProduct);
 122
 123         return bl_entry;
 124 }
 125
 126
 127 /**
 128  * usbhid_modify_dquirk: add/replace a HID quirk
 129  * @idVendor: the 16-bit USB vendor ID, in native byteorder
 130  * @idProduct: the 16-bit USB product ID, in native byteorder
 131  * @quirks: the u32 quirks value to add/replace
 132  *
 133  * Description:
 134  *         If an dynamic quirk exists in memory for this (idVendor,
 135  *         idProduct) pair, replace its quirks value with what was
 136  *         provided.  Otherwise, add the quirk to the dynamic quirks list.
 137  *
 138  * Returns: 0 OK, -error on failure.
 139  */
 140 static int usbhid_modify_dquirk(const u16 idVendor, const u16 idProduct,
 141                                 const u32 quirks)
 142 {
 143         struct quirks_list_struct *q_new, *q;
 144         int list_edited = 0;
 145
 146         if (!idVendor) {
 147                 dbg_hid("Cannot add a quirk with idVendor = 0\n");
 148                 return -EINVAL;
 149         }
 150
 151         q_new = kmalloc(sizeof(struct quirks_list_struct), GFP_KERNEL);
 152         if (!q_new) {
 153                 dbg_hid("Could not allocate quirks_list_struct\n");
 154                 return -ENOMEM;
 155         }
 156
 157         q_new->hid_bl_item.idVendor = idVendor;
 158         q_new->hid_bl_item.idProduct = idProduct;
 159         q_new->hid_bl_item.quirks = quirks;
 160
 161         down_write(&dquirks_rwsem);
 162
 163         list_for_each_entry(q, &dquirks_list, node) {
 164
 165                 if (q->hid_bl_item.idVendor == idVendor &&
 166                                 q->hid_bl_item.idProduct == idProduct) {
 167
 168                         list_replace(&q->node, &q_new->node);
 169                         kfree(q);
 170                         list_edited = 1;
 171                         break;
 172
 173                 }
 174
 175         }
 176
 177         if (!list_edited)
 178                 list_add_tail(&q_new->node, &dquirks_list);
 179
 180         up_write(&dquirks_rwsem);
 181
 182         return 0;
 183 }
 184
 185 /**
 186  * usbhid_remove_all_dquirks: remove all runtime HID quirks from memory
 187  *
 188  * Description:
 189  *         Free all memory associated with dynamic quirks - called before
 190  *         module unload.
 191  *
 192  */
 193 static void usbhid_remove_all_dquirks(void)
 194 {
 195         struct quirks_list_struct *q, *temp;
 196
 197         down_write(&dquirks_rwsem);
 198         list_for_each_entry_safe(q, temp, &dquirks_list, node) {
 199                 list_del(&q->node);
 200                 kfree(q);
 201         }
 202         up_write(&dquirks_rwsem);
 203
 204 }
 205
 206 /**
 207  * usbhid_quirks_init: apply USB HID quirks specified at module load time
 208  */
 209 int usbhid_quirks_init(char **quirks_param)
 210 {
 211         u16 idVendor, idProduct;
 212         u32 quirks;
 213         int n = 0, m;
 214
 215         for (; n < MAX_USBHID_BOOT_QUIRKS && quirks_param[n]; n++) {
 216
 217                 m = sscanf(quirks_param[n], "0x%hx:0x%hx:0x%x",
 218                                 &idVendor, &idProduct, &quirks);
 219
 220                 if (m != 3 ||
 221                                 usbhid_modify_dquirk(idVendor, idProduct, quirks) != 0) {
 222                         printk(KERN_WARNING
 223                                         "Could not parse HID quirk module param %s\n",
 224                                         quirks_param[n]);
 225                 }
 226         }
 227
 228         return 0;
 229 }
 230
 231 /**
 232  * usbhid_quirks_exit: release memory associated with dynamic_quirks
 233  *
 234  * Description:
 235  *     Release all memory associated with dynamic quirks.  Called upon
 236  *     module unload.
 237  *
 238  * Returns: nothing
 239  */
 240 void usbhid_quirks_exit(void)
 241 {
 242         usbhid_remove_all_dquirks();
 243 }
 244
 245 /**
 246  * usbhid_exists_squirk: return any static quirks for a USB HID device
 247  * @idVendor: the 16-bit USB vendor ID, in native byteorder
 248  * @idProduct: the 16-bit USB product ID, in native byteorder
 249  *
 250  * Description:
 251  *     Given a USB vendor ID and product ID, return a pointer to
 252  *     the hid_blacklist entry associated with that device.
 253  *
 254  * Returns: pointer if quirk found, or NULL if no quirks found.
 255  */
 256 static const struct hid_blacklist *usbhid_exists_squirk(const u16 idVendor,
 257                 const u16 idProduct)
 258 {
 259         const struct hid_blacklist *bl_entry = NULL;
 260         int n = 0;
 261
 262         for (; hid_blacklist[n].idVendor; n++)
 263                 if (hid_blacklist[n].idVendor == idVendor &&
 264                                 hid_blacklist[n].idProduct == idProduct)
 265                         bl_entry = &hid_blacklist[n];
 266
 267         if (bl_entry != NULL)
 268                 dbg_hid("Found squirk 0x%x for USB HID vendor 0x%hx prod 0x%hx\n",
 269                                 bl_entry->quirks, bl_entry->idVendor,
 270                                 bl_entry->idProduct);
 271         return bl_entry;
 272 }
 273
 274 /**
 275  * usbhid_lookup_quirk: return any quirks associated with a USB HID device
 276  * @idVendor: the 16-bit USB vendor ID, in native byteorder
 277  * @idProduct: the 16-bit USB product ID, in native byteorder
 278  *
 279  * Description:
 280  *     Given a USB vendor ID and product ID, return any quirks associated
 281  *     with that device.
 282  *
 283  * Returns: a u32 quirks value.
 284  */
 285 u32 usbhid_lookup_quirk(const u16 idVendor, const u16 idProduct)
 286 {
 287         u32 quirks = 0;
 288         const struct hid_blacklist *bl_entry = NULL;
 289
 290         /* NCR devices must not be queried for reports */
 291         if (idVendor == USB_VENDOR_ID_NCR &&
 292                         idProduct >= USB_DEVICE_ID_NCR_FIRST &&
 293                         idProduct <= USB_DEVICE_ID_NCR_LAST)
 294                         return HID_QUIRK_NO_INIT_REPORTS;
 295
 296         down_read(&dquirks_rwsem);
 297         bl_entry = usbhid_exists_dquirk(idVendor, idProduct);
 298         if (!bl_entry)
 299                 bl_entry = usbhid_exists_squirk(idVendor, idProduct);
 300         if (bl_entry)
 301                 quirks = bl_entry->quirks;
 302         up_read(&dquirks_rwsem);
 303
 304         return quirks;
 305 }
 306
 307 EXPORT_SYMBOL_GPL(usbhid_lookup_quirk);