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/export.h> 20#include <linux/slab.h> 21 22#include "../hid-ids.h" 23 24/* 25 * Alphabetically sorted blacklist by quirk type. 26 */ 27 28static const struct hid_blacklist { 29 __u16 idVendor; 30 __u16 idProduct; 31 __u32 quirks; 32} hid_blacklist[] = { 33 { USB_VENDOR_ID_AASHIMA, USB_DEVICE_ID_AASHIMA_GAMEPAD, HID_QUIRK_BADPAD }, 34 { USB_VENDOR_ID_AASHIMA, USB_DEVICE_ID_AASHIMA_PREDATOR, HID_QUIRK_BADPAD }, 35 { USB_VENDOR_ID_ALPS, USB_DEVICE_ID_IBM_GAMEPAD, HID_QUIRK_BADPAD }, 36 { USB_VENDOR_ID_CHIC, USB_DEVICE_ID_CHIC_GAMEPAD, HID_QUIRK_BADPAD }, 37 { USB_VENDOR_ID_DWAV, USB_DEVICE_ID_EGALAX_TOUCHCONTROLLER, HID_QUIRK_MULTI_INPUT | HID_QUIRK_NOGET }, 38 { USB_VENDOR_ID_MOJO, USB_DEVICE_ID_RETRO_ADAPTER, HID_QUIRK_MULTI_INPUT }, 39 { USB_VENDOR_ID_HAPP, USB_DEVICE_ID_UGCI_DRIVING, HID_QUIRK_BADPAD | HID_QUIRK_MULTI_INPUT }, 40 { USB_VENDOR_ID_HAPP, USB_DEVICE_ID_UGCI_FLYING, HID_QUIRK_BADPAD | HID_QUIRK_MULTI_INPUT }, 41 { USB_VENDOR_ID_HAPP, USB_DEVICE_ID_UGCI_FIGHTING, HID_QUIRK_BADPAD | HID_QUIRK_MULTI_INPUT }, 42 { USB_VENDOR_ID_NATSU, USB_DEVICE_ID_NATSU_GAMEPAD, HID_QUIRK_BADPAD }, 43 { USB_VENDOR_ID_NEC, USB_DEVICE_ID_NEC_USB_GAME_PAD, HID_QUIRK_BADPAD }, 44 { USB_VENDOR_ID_NEXTWINDOW, USB_DEVICE_ID_NEXTWINDOW_TOUCHSCREEN, HID_QUIRK_MULTI_INPUT}, 45 { USB_VENDOR_ID_SAITEK, USB_DEVICE_ID_SAITEK_RUMBLEPAD, HID_QUIRK_BADPAD }, 46 { USB_VENDOR_ID_TOPMAX, USB_DEVICE_ID_TOPMAX_COBRAPAD, HID_QUIRK_BADPAD }, 47 48 { USB_VENDOR_ID_AFATECH, USB_DEVICE_ID_AFATECH_AF9016, HID_QUIRK_FULLSPEED_INTERVAL }, 49 50 { USB_VENDOR_ID_EMS, USB_DEVICE_ID_EMS_TRIO_LINKER_PLUS_II, HID_QUIRK_MULTI_INPUT }, 51 { USB_VENDOR_ID_ETURBOTOUCH, USB_DEVICE_ID_ETURBOTOUCH, HID_QUIRK_MULTI_INPUT }, 52 { USB_VENDOR_ID_ETURBOTOUCH, USB_DEVICE_ID_ETURBOTOUCH_2968, HID_QUIRK_MULTI_INPUT }, 53 { USB_VENDOR_ID_GREENASIA, USB_DEVICE_ID_GREENASIA_DUAL_USB_JOYPAD, HID_QUIRK_MULTI_INPUT }, 54 { USB_VENDOR_ID_PANTHERLORD, USB_DEVICE_ID_PANTHERLORD_TWIN_USB_JOYSTICK, HID_QUIRK_MULTI_INPUT | HID_QUIRK_SKIP_OUTPUT_REPORTS }, 55 { USB_VENDOR_ID_TOUCHPACK, USB_DEVICE_ID_TOUCHPACK_RTS, HID_QUIRK_MULTI_INPUT }, 56 57 { USB_VENDOR_ID_AIREN, USB_DEVICE_ID_AIREN_SLIMPLUS, HID_QUIRK_NOGET }, 58 { USB_VENDOR_ID_ATEN, USB_DEVICE_ID_ATEN_UC100KM, HID_QUIRK_NOGET }, 59 { USB_VENDOR_ID_ATEN, USB_DEVICE_ID_ATEN_CS124U, HID_QUIRK_NOGET }, 60 { USB_VENDOR_ID_ATEN, USB_DEVICE_ID_ATEN_2PORTKVM, HID_QUIRK_NOGET }, 61 { USB_VENDOR_ID_ATEN, USB_DEVICE_ID_ATEN_4PORTKVM, HID_QUIRK_NOGET }, 62 { USB_VENDOR_ID_ATEN, USB_DEVICE_ID_ATEN_4PORTKVMC, HID_QUIRK_NOGET }, 63 { USB_VENDOR_ID_ATEN, USB_DEVICE_ID_ATEN_CS682, HID_QUIRK_NOGET }, 64 { USB_VENDOR_ID_CH, USB_DEVICE_ID_CH_FIGHTERSTICK, HID_QUIRK_NOGET }, 65 { USB_VENDOR_ID_CH, USB_DEVICE_ID_CH_COMBATSTICK, HID_QUIRK_NOGET }, 66 { USB_VENDOR_ID_CH, USB_DEVICE_ID_CH_FLIGHT_SIM_ECLIPSE_YOKE, HID_QUIRK_NOGET }, 67 { USB_VENDOR_ID_CH, USB_DEVICE_ID_CH_FLIGHT_SIM_YOKE, HID_QUIRK_NOGET }, 68 { USB_VENDOR_ID_CH, USB_DEVICE_ID_CH_PRO_THROTTLE, HID_QUIRK_NOGET }, 69 { USB_VENDOR_ID_CH, USB_DEVICE_ID_CH_PRO_PEDALS, HID_QUIRK_NOGET }, 70 { USB_VENDOR_ID_CH, USB_DEVICE_ID_CH_3AXIS_5BUTTON_STICK, HID_QUIRK_NOGET }, 71 { USB_VENDOR_ID_CH, USB_DEVICE_ID_CH_AXIS_295, HID_QUIRK_NOGET }, 72 { USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_PIXART_USB_OPTICAL_MOUSE, HID_QUIRK_ALWAYS_POLL }, 73 { USB_VENDOR_ID_CREATIVELABS, USB_DEVICE_ID_CREATIVE_SB_OMNI_SURROUND_51, HID_QUIRK_NOGET }, 74 { USB_VENDOR_ID_DMI, USB_DEVICE_ID_DMI_ENC, HID_QUIRK_NOGET }, 75 { USB_VENDOR_ID_DRAGONRISE, USB_DEVICE_ID_DRAGONRISE_WIIU, HID_QUIRK_MULTI_INPUT }, 76 { USB_VENDOR_ID_ELAN, HID_ANY_ID, HID_QUIRK_ALWAYS_POLL }, 77 { USB_VENDOR_ID_ELO, USB_DEVICE_ID_ELO_TS2700, HID_QUIRK_NOGET }, 78 { USB_VENDOR_ID_FORMOSA, USB_DEVICE_ID_FORMOSA_IR_RECEIVER, HID_QUIRK_NO_INIT_REPORTS }, 79 { USB_VENDOR_ID_FREESCALE, USB_DEVICE_ID_FREESCALE_MX28, HID_QUIRK_NOGET }, 80 { USB_VENDOR_ID_HP, USB_PRODUCT_ID_HP_LOGITECH_OEM_USB_OPTICAL_MOUSE_0A4A, HID_QUIRK_ALWAYS_POLL }, 81 { USB_VENDOR_ID_HP, USB_PRODUCT_ID_HP_LOGITECH_OEM_USB_OPTICAL_MOUSE_0B4A, HID_QUIRK_ALWAYS_POLL }, 82 { USB_VENDOR_ID_HP, USB_PRODUCT_ID_HP_PIXART_OEM_USB_OPTICAL_MOUSE, HID_QUIRK_ALWAYS_POLL }, 83 { USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_C077, HID_QUIRK_ALWAYS_POLL }, 84 { USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_KEYBOARD_G710_PLUS, HID_QUIRK_NOGET }, 85 { USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_MOUSE_C01A, HID_QUIRK_ALWAYS_POLL }, 86 { USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_MOUSE_C05A, HID_QUIRK_ALWAYS_POLL }, 87 { USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_MOUSE_C06A, HID_QUIRK_ALWAYS_POLL }, 88 { USB_VENDOR_ID_MGE, USB_DEVICE_ID_MGE_UPS, HID_QUIRK_NOGET }, 89 { USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_SURFACE_PRO_2, HID_QUIRK_NO_INIT_REPORTS }, 90 { USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_TYPE_COVER_2, HID_QUIRK_NO_INIT_REPORTS }, 91 { USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_TOUCH_COVER_2, HID_QUIRK_NO_INIT_REPORTS }, 92 { USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_TYPE_COVER_PRO_3, HID_QUIRK_NO_INIT_REPORTS }, 93 { USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_TYPE_COVER_PRO_3_2, HID_QUIRK_NO_INIT_REPORTS }, 94 { USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_TYPE_COVER_PRO_3_JP, HID_QUIRK_NO_INIT_REPORTS }, 95 { USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_TYPE_COVER_3, HID_QUIRK_NO_INIT_REPORTS }, 96 { USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_POWER_COVER, HID_QUIRK_NO_INIT_REPORTS }, 97 { USB_VENDOR_ID_MSI, USB_DEVICE_ID_MSI_GT683R_LED_PANEL, HID_QUIRK_NO_INIT_REPORTS }, 98 { USB_VENDOR_ID_NEXIO, USB_DEVICE_ID_NEXIO_MULTITOUCH_PTI0750, HID_QUIRK_NO_INIT_REPORTS }, 99 { USB_VENDOR_ID_NOVATEK, USB_DEVICE_ID_NOVATEK_MOUSE, HID_QUIRK_NO_INIT_REPORTS }, 100 { USB_VENDOR_ID_PENMOUNT, USB_DEVICE_ID_PENMOUNT_1610, HID_QUIRK_NOGET }, 101 { USB_VENDOR_ID_PENMOUNT, USB_DEVICE_ID_PENMOUNT_1640, HID_QUIRK_NOGET }, 102 { USB_VENDOR_ID_PIXART, USB_DEVICE_ID_PIXART_USB_OPTICAL_MOUSE, HID_QUIRK_ALWAYS_POLL }, 103 { USB_VENDOR_ID_KYE, USB_DEVICE_ID_PIXART_USB_OPTICAL_MOUSE_ID2, HID_QUIRK_ALWAYS_POLL }, 104 { USB_VENDOR_ID_PIXART, USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN, HID_QUIRK_NO_INIT_REPORTS }, 105 { USB_VENDOR_ID_PIXART, USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN1, HID_QUIRK_NO_INIT_REPORTS }, 106 { USB_VENDOR_ID_PIXART, USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN2, HID_QUIRK_NO_INIT_REPORTS }, 107 { USB_VENDOR_ID_PRIMAX, USB_DEVICE_ID_PRIMAX_MOUSE_4D22, HID_QUIRK_ALWAYS_POLL }, 108 { USB_VENDOR_ID_PRODIGE, USB_DEVICE_ID_PRODIGE_CORDLESS, HID_QUIRK_NOGET }, 109 { USB_VENDOR_ID_QUANTA, USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH_3001, HID_QUIRK_NOGET }, 110 { USB_VENDOR_ID_QUANTA, USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH_3008, HID_QUIRK_NOGET }, 111 { USB_VENDOR_ID_REALTEK, USB_DEVICE_ID_REALTEK_READER, HID_QUIRK_NO_INIT_REPORTS }, 112 { USB_VENDOR_ID_SENNHEISER, USB_DEVICE_ID_SENNHEISER_BTD500USB, HID_QUIRK_NOGET }, 113 { USB_VENDOR_ID_SIGMATEL, USB_DEVICE_ID_SIGMATEL_STMP3780, HID_QUIRK_NOGET }, 114 { USB_VENDOR_ID_SIS_TOUCH, USB_DEVICE_ID_SIS9200_TOUCH, HID_QUIRK_NOGET }, 115 { USB_VENDOR_ID_SIS_TOUCH, USB_DEVICE_ID_SIS817_TOUCH, HID_QUIRK_NOGET }, 116 { USB_VENDOR_ID_SIS_TOUCH, USB_DEVICE_ID_SIS_TS, HID_QUIRK_NO_INIT_REPORTS }, 117 { USB_VENDOR_ID_SIS_TOUCH, USB_DEVICE_ID_SIS1030_TOUCH, HID_QUIRK_NOGET }, 118 { USB_VENDOR_ID_SUN, USB_DEVICE_ID_RARITAN_KVM_DONGLE, HID_QUIRK_NOGET }, 119 { USB_VENDOR_ID_SYMBOL, USB_DEVICE_ID_SYMBOL_SCANNER_1, HID_QUIRK_NOGET }, 120 { USB_VENDOR_ID_SYMBOL, USB_DEVICE_ID_SYMBOL_SCANNER_2, HID_QUIRK_NOGET }, 121 { USB_VENDOR_ID_TPV, USB_DEVICE_ID_TPV_OPTICAL_TOUCHSCREEN_8882, HID_QUIRK_NOGET }, 122 { USB_VENDOR_ID_TPV, USB_DEVICE_ID_TPV_OPTICAL_TOUCHSCREEN_8883, HID_QUIRK_NOGET }, 123 { USB_VENDOR_ID_TURBOX, USB_DEVICE_ID_TURBOX_KEYBOARD, HID_QUIRK_NOGET }, 124 { USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_KNA5, HID_QUIRK_MULTI_INPUT }, 125 { USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_TWA60, HID_QUIRK_MULTI_INPUT }, 126 { USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_MEDIA_TABLET_10_6_INCH, HID_QUIRK_MULTI_INPUT }, 127 { USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_MEDIA_TABLET_14_1_INCH, HID_QUIRK_MULTI_INPUT }, 128 { USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_SIRIUS_BATTERY_FREE_TABLET, HID_QUIRK_MULTI_INPUT }, 129 { USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_QUAD_USB_JOYPAD, HID_QUIRK_NOGET | HID_QUIRK_MULTI_INPUT }, 130 131 { USB_VENDOR_ID_WISEGROUP_LTD2, USB_DEVICE_ID_SMARTJOY_DUAL_PLUS, HID_QUIRK_NOGET | HID_QUIRK_MULTI_INPUT }, 132 133 { USB_VENDOR_ID_PI_ENGINEERING, USB_DEVICE_ID_PI_ENGINEERING_VEC_USB_FOOTPEDAL, HID_QUIRK_HIDINPUT_FORCE }, 134 135 { USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_MULTI_TOUCH, HID_QUIRK_MULTI_INPUT }, 136 { USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_WIRELESS, HID_QUIRK_MULTI_INPUT }, 137 { USB_VENDOR_ID_SIGMA_MICRO, USB_DEVICE_ID_SIGMA_MICRO_KEYBOARD, HID_QUIRK_NO_INIT_REPORTS }, 138 { USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_MOUSEPEN_I608X, HID_QUIRK_MULTI_INPUT }, 139 { USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_MOUSEPEN_I608X_2, HID_QUIRK_MULTI_INPUT }, 140 { USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_EASYPEN_M610X, HID_QUIRK_MULTI_INPUT }, 141 { USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_PENSKETCH_M912, HID_QUIRK_MULTI_INPUT }, 142 { USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_DUOSENSE, HID_QUIRK_NO_INIT_REPORTS }, 143 { USB_VENDOR_ID_SEMICO, USB_DEVICE_ID_SEMICO_USB_KEYKOARD, HID_QUIRK_NO_INIT_REPORTS }, 144 { USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_LTS1, HID_QUIRK_NO_INIT_REPORTS }, 145 { USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_LTS2, HID_QUIRK_NO_INIT_REPORTS }, 146 { USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_HD, HID_QUIRK_NO_INIT_REPORTS }, 147 { USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_QUAD_HD, HID_QUIRK_NO_INIT_REPORTS }, 148 { USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_TP_V103, HID_QUIRK_NO_INIT_REPORTS }, 149 { USB_VENDOR_ID_HOLTEK_ALT, USB_DEVICE_ID_HOLTEK_ALT_KEYBOARD_A096, HID_QUIRK_NO_INIT_INPUT_REPORTS }, 150 { USB_VENDOR_ID_MULTIPLE_1781, USB_DEVICE_ID_RAPHNET_4NES4SNES_OLD, HID_QUIRK_MULTI_INPUT }, 151 { USB_VENDOR_ID_DRACAL_RAPHNET, USB_DEVICE_ID_RAPHNET_2NES2SNES, HID_QUIRK_MULTI_INPUT }, 152 { USB_VENDOR_ID_DRACAL_RAPHNET, USB_DEVICE_ID_RAPHNET_4NES4SNES, HID_QUIRK_MULTI_INPUT }, 153 154 { 0, 0 } 155}; 156 157/* Dynamic HID quirks list - specified at runtime */ 158struct quirks_list_struct { 159 struct hid_blacklist hid_bl_item; 160 struct list_head node; 161}; 162 163static LIST_HEAD(dquirks_list); 164static DECLARE_RWSEM(dquirks_rwsem); 165 166/* Runtime ("dynamic") quirks manipulation functions */ 167 168/** 169 * usbhid_exists_dquirk: find any dynamic quirks for a USB HID device 170 * @idVendor: the 16-bit USB vendor ID, in native byteorder 171 * @idProduct: the 16-bit USB product ID, in native byteorder 172 * 173 * Description: 174 * Scans dquirks_list for a matching dynamic quirk and returns 175 * the pointer to the relevant struct hid_blacklist if found. 176 * Must be called with a read lock held on dquirks_rwsem. 177 * 178 * Returns: NULL if no quirk found, struct hid_blacklist * if found. 179 */ 180static struct hid_blacklist *usbhid_exists_dquirk(const u16 idVendor, 181 const u16 idProduct) 182{ 183 struct quirks_list_struct *q; 184 struct hid_blacklist *bl_entry = NULL; 185 186 list_for_each_entry(q, &dquirks_list, node) { 187 if (q->hid_bl_item.idVendor == idVendor && 188 q->hid_bl_item.idProduct == idProduct) { 189 bl_entry = &q->hid_bl_item; 190 break; 191 } 192 } 193 194 if (bl_entry != NULL) 195 dbg_hid("Found dynamic quirk 0x%x for USB HID vendor 0x%hx prod 0x%hx\n", 196 bl_entry->quirks, bl_entry->idVendor, 197 bl_entry->idProduct); 198 199 return bl_entry; 200} 201 202 203/** 204 * usbhid_modify_dquirk: add/replace a HID quirk 205 * @idVendor: the 16-bit USB vendor ID, in native byteorder 206 * @idProduct: the 16-bit USB product ID, in native byteorder 207 * @quirks: the u32 quirks value to add/replace 208 * 209 * Description: 210 * If an dynamic quirk exists in memory for this (idVendor, 211 * idProduct) pair, replace its quirks value with what was 212 * provided. Otherwise, add the quirk to the dynamic quirks list. 213 * 214 * Returns: 0 OK, -error on failure. 215 */ 216static int usbhid_modify_dquirk(const u16 idVendor, const u16 idProduct, 217 const u32 quirks) 218{ 219 struct quirks_list_struct *q_new, *q; 220 int list_edited = 0; 221 222 if (!idVendor) { 223 dbg_hid("Cannot add a quirk with idVendor = 0\n"); 224 return -EINVAL; 225 } 226 227 q_new = kmalloc(sizeof(struct quirks_list_struct), GFP_KERNEL); 228 if (!q_new) { 229 dbg_hid("Could not allocate quirks_list_struct\n"); 230 return -ENOMEM; 231 } 232 233 q_new->hid_bl_item.idVendor = idVendor; 234 q_new->hid_bl_item.idProduct = idProduct; 235 q_new->hid_bl_item.quirks = quirks; 236 237 down_write(&dquirks_rwsem); 238 239 list_for_each_entry(q, &dquirks_list, node) { 240 241 if (q->hid_bl_item.idVendor == idVendor && 242 q->hid_bl_item.idProduct == idProduct) { 243 244 list_replace(&q->node, &q_new->node); 245 kfree(q); 246 list_edited = 1; 247 break; 248 249 } 250 251 } 252 253 if (!list_edited) 254 list_add_tail(&q_new->node, &dquirks_list); 255 256 up_write(&dquirks_rwsem); 257 258 return 0; 259} 260 261/** 262 * usbhid_remove_all_dquirks: remove all runtime HID quirks from memory 263 * 264 * Description: 265 * Free all memory associated with dynamic quirks - called before 266 * module unload. 267 * 268 */ 269static void usbhid_remove_all_dquirks(void) 270{ 271 struct quirks_list_struct *q, *temp; 272 273 down_write(&dquirks_rwsem); 274 list_for_each_entry_safe(q, temp, &dquirks_list, node) { 275 list_del(&q->node); 276 kfree(q); 277 } 278 up_write(&dquirks_rwsem); 279 280} 281 282/** 283 * usbhid_quirks_init: apply USB HID quirks specified at module load time 284 */ 285int usbhid_quirks_init(char **quirks_param) 286{ 287 u16 idVendor, idProduct; 288 u32 quirks; 289 int n = 0, m; 290 291 for (; n < MAX_USBHID_BOOT_QUIRKS && quirks_param[n]; n++) { 292 293 m = sscanf(quirks_param[n], "0x%hx:0x%hx:0x%x", 294 &idVendor, &idProduct, &quirks); 295 296 if (m != 3 || 297 usbhid_modify_dquirk(idVendor, idProduct, quirks) != 0) { 298 printk(KERN_WARNING 299 "Could not parse HID quirk module param %s\n", 300 quirks_param[n]); 301 } 302 } 303 304 return 0; 305} 306 307/** 308 * usbhid_quirks_exit: release memory associated with dynamic_quirks 309 * 310 * Description: 311 * Release all memory associated with dynamic quirks. Called upon 312 * module unload. 313 * 314 * Returns: nothing 315 */ 316void usbhid_quirks_exit(void) 317{ 318 usbhid_remove_all_dquirks(); 319} 320 321/** 322 * usbhid_exists_squirk: return any static quirks for a USB HID device 323 * @idVendor: the 16-bit USB vendor ID, in native byteorder 324 * @idProduct: the 16-bit USB product ID, in native byteorder 325 * 326 * Description: 327 * Given a USB vendor ID and product ID, return a pointer to 328 * the hid_blacklist entry associated with that device. 329 * 330 * Returns: pointer if quirk found, or NULL if no quirks found. 331 */ 332static const struct hid_blacklist *usbhid_exists_squirk(const u16 idVendor, 333 const u16 idProduct) 334{ 335 const struct hid_blacklist *bl_entry = NULL; 336 int n = 0; 337 338 for (; hid_blacklist[n].idVendor; n++) 339 if (hid_blacklist[n].idVendor == idVendor && 340 (hid_blacklist[n].idProduct == (__u16) HID_ANY_ID || 341 hid_blacklist[n].idProduct == idProduct)) 342 bl_entry = &hid_blacklist[n]; 343 344 if (bl_entry != NULL) 345 dbg_hid("Found squirk 0x%x for USB HID vendor 0x%hx prod 0x%hx\n", 346 bl_entry->quirks, bl_entry->idVendor, 347 bl_entry->idProduct); 348 return bl_entry; 349} 350 351/** 352 * usbhid_lookup_quirk: return any quirks associated with a USB HID device 353 * @idVendor: the 16-bit USB vendor ID, in native byteorder 354 * @idProduct: the 16-bit USB product ID, in native byteorder 355 * 356 * Description: 357 * Given a USB vendor ID and product ID, return any quirks associated 358 * with that device. 359 * 360 * Returns: a u32 quirks value. 361 */ 362u32 usbhid_lookup_quirk(const u16 idVendor, const u16 idProduct) 363{ 364 u32 quirks = 0; 365 const struct hid_blacklist *bl_entry = NULL; 366 367 /* NCR devices must not be queried for reports */ 368 if (idVendor == USB_VENDOR_ID_NCR && 369 idProduct >= USB_DEVICE_ID_NCR_FIRST && 370 idProduct <= USB_DEVICE_ID_NCR_LAST) 371 return HID_QUIRK_NO_INIT_REPORTS; 372 373 down_read(&dquirks_rwsem); 374 bl_entry = usbhid_exists_dquirk(idVendor, idProduct); 375 if (!bl_entry) 376 bl_entry = usbhid_exists_squirk(idVendor, idProduct); 377 if (bl_entry) 378 quirks = bl_entry->quirks; 379 up_read(&dquirks_rwsem); 380 381 return quirks; 382} 383 384EXPORT_SYMBOL_GPL(usbhid_lookup_quirk); 385