source: src/linux/universal/linux-3.18/drivers/hid/usbhid/hid-quirks.c @ 31869

Last change on this file since 31869 was 31869, checked in by brainslayer, 3 months ago

update

File size: 15.4 KB
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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_ATEN, USB_DEVICE_ID_ATEN_CS692, HID_QUIRK_NOGET },
65        { USB_VENDOR_ID_CH, USB_DEVICE_ID_CH_FIGHTERSTICK, HID_QUIRK_NOGET },
66        { USB_VENDOR_ID_CH, USB_DEVICE_ID_CH_COMBATSTICK, HID_QUIRK_NOGET },
67        { USB_VENDOR_ID_CH, USB_DEVICE_ID_CH_FLIGHT_SIM_ECLIPSE_YOKE, HID_QUIRK_NOGET },
68        { USB_VENDOR_ID_CH, USB_DEVICE_ID_CH_FLIGHT_SIM_YOKE, HID_QUIRK_NOGET },
69        { USB_VENDOR_ID_CH, USB_DEVICE_ID_CH_PRO_THROTTLE, HID_QUIRK_NOGET },
70        { USB_VENDOR_ID_CH, USB_DEVICE_ID_CH_PRO_PEDALS, HID_QUIRK_NOGET },
71        { USB_VENDOR_ID_CH, USB_DEVICE_ID_CH_3AXIS_5BUTTON_STICK, HID_QUIRK_NOGET },
72        { USB_VENDOR_ID_CH, USB_DEVICE_ID_CH_AXIS_295, HID_QUIRK_NOGET },
73        { USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_PIXART_USB_OPTICAL_MOUSE, HID_QUIRK_ALWAYS_POLL },
74        { USB_VENDOR_ID_DMI, USB_DEVICE_ID_DMI_ENC, HID_QUIRK_NOGET },
75        { USB_VENDOR_ID_ELAN, USB_DEVICE_ID_ELAN_TOUCHSCREEN, HID_QUIRK_ALWAYS_POLL },
76        { USB_VENDOR_ID_ELAN, USB_DEVICE_ID_ELAN_TOUCHSCREEN_009B, HID_QUIRK_ALWAYS_POLL },
77        { USB_VENDOR_ID_ELAN, USB_DEVICE_ID_ELAN_TOUCHSCREEN_0103, HID_QUIRK_ALWAYS_POLL },
78        { USB_VENDOR_ID_ELAN, USB_DEVICE_ID_ELAN_TOUCHSCREEN_010c, HID_QUIRK_ALWAYS_POLL },
79        { USB_VENDOR_ID_ELAN, USB_DEVICE_ID_ELAN_TOUCHSCREEN_016F, HID_QUIRK_ALWAYS_POLL },
80        { USB_VENDOR_ID_ELO, USB_DEVICE_ID_ELO_TS2700, HID_QUIRK_NOGET },
81        { USB_VENDOR_ID_FORMOSA, USB_DEVICE_ID_FORMOSA_IR_RECEIVER, HID_QUIRK_NO_INIT_REPORTS },
82        { USB_VENDOR_ID_FREESCALE, USB_DEVICE_ID_FREESCALE_MX28, HID_QUIRK_NOGET },
83        { USB_VENDOR_ID_HP, USB_PRODUCT_ID_HP_LOGITECH_OEM_USB_OPTICAL_MOUSE_0A4A, HID_QUIRK_ALWAYS_POLL },
84        { USB_VENDOR_ID_HP, USB_PRODUCT_ID_HP_LOGITECH_OEM_USB_OPTICAL_MOUSE_0B4A, HID_QUIRK_ALWAYS_POLL },
85        { USB_VENDOR_ID_HP, USB_PRODUCT_ID_HP_PIXART_OEM_USB_OPTICAL_MOUSE, HID_QUIRK_ALWAYS_POLL },
86        { USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_C077, HID_QUIRK_ALWAYS_POLL },
87        { USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_MOUSE_C01A, HID_QUIRK_ALWAYS_POLL },
88        { USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_MOUSE_C05A, HID_QUIRK_ALWAYS_POLL },
89        { USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_MOUSE_C06A, HID_QUIRK_ALWAYS_POLL },
90        { USB_VENDOR_ID_MGE, USB_DEVICE_ID_MGE_UPS, HID_QUIRK_NOGET },
91        { USB_VENDOR_ID_MSI, USB_DEVICE_ID_MSI_GT683R_LED_PANEL, HID_QUIRK_NO_INIT_REPORTS },
92        { USB_VENDOR_ID_NEXIO, USB_DEVICE_ID_NEXIO_MULTITOUCH_PTI0750, HID_QUIRK_NO_INIT_REPORTS },
93        { USB_VENDOR_ID_NOVATEK, USB_DEVICE_ID_NOVATEK_MOUSE, HID_QUIRK_NO_INIT_REPORTS },
94        { USB_VENDOR_ID_PENMOUNT, USB_DEVICE_ID_PENMOUNT_1610, HID_QUIRK_NOGET },
95        { USB_VENDOR_ID_PENMOUNT, USB_DEVICE_ID_PENMOUNT_1640, HID_QUIRK_NOGET },
96        { USB_VENDOR_ID_PIXART, USB_DEVICE_ID_PIXART_USB_OPTICAL_MOUSE, HID_QUIRK_ALWAYS_POLL },
97        { USB_VENDOR_ID_KYE, USB_DEVICE_ID_PIXART_USB_OPTICAL_MOUSE_ID2, HID_QUIRK_ALWAYS_POLL },
98        { USB_VENDOR_ID_PIXART, USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN, HID_QUIRK_NO_INIT_REPORTS },
99        { USB_VENDOR_ID_PIXART, USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN1, HID_QUIRK_NO_INIT_REPORTS },
100        { USB_VENDOR_ID_PIXART, USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN2, HID_QUIRK_NO_INIT_REPORTS },
101        { USB_VENDOR_ID_PRIMAX, USB_DEVICE_ID_PRIMAX_MOUSE_4D22, HID_QUIRK_ALWAYS_POLL },
102        { USB_VENDOR_ID_PRODIGE, USB_DEVICE_ID_PRODIGE_CORDLESS, HID_QUIRK_NOGET },
103        { USB_VENDOR_ID_QUANTA, USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH_3001, HID_QUIRK_NOGET },
104        { USB_VENDOR_ID_QUANTA, USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH_3008, HID_QUIRK_NOGET },
105        { USB_VENDOR_ID_REALTEK, USB_DEVICE_ID_REALTEK_READER, HID_QUIRK_NO_INIT_REPORTS },
106        { USB_VENDOR_ID_SENNHEISER, USB_DEVICE_ID_SENNHEISER_BTD500USB, HID_QUIRK_NOGET },
107        { USB_VENDOR_ID_SIGMATEL, USB_DEVICE_ID_SIGMATEL_STMP3780, HID_QUIRK_NOGET },
108        { USB_VENDOR_ID_SIS_TOUCH, USB_DEVICE_ID_SIS9200_TOUCH, HID_QUIRK_NOGET },
109        { USB_VENDOR_ID_SIS_TOUCH, USB_DEVICE_ID_SIS817_TOUCH, HID_QUIRK_NOGET },
110        { USB_VENDOR_ID_SIS_TOUCH, USB_DEVICE_ID_SIS_TS, HID_QUIRK_NO_INIT_REPORTS },
111        { USB_VENDOR_ID_SIS_TOUCH, USB_DEVICE_ID_SIS1030_TOUCH, HID_QUIRK_NOGET },
112        { USB_VENDOR_ID_SUN, USB_DEVICE_ID_RARITAN_KVM_DONGLE, HID_QUIRK_NOGET },
113        { USB_VENDOR_ID_SYMBOL, USB_DEVICE_ID_SYMBOL_SCANNER_1, HID_QUIRK_NOGET },
114        { USB_VENDOR_ID_SYMBOL, USB_DEVICE_ID_SYMBOL_SCANNER_2, HID_QUIRK_NOGET },
115        { USB_VENDOR_ID_TPV, USB_DEVICE_ID_TPV_OPTICAL_TOUCHSCREEN_8882, HID_QUIRK_NOGET },
116        { USB_VENDOR_ID_TPV, USB_DEVICE_ID_TPV_OPTICAL_TOUCHSCREEN_8883, HID_QUIRK_NOGET },
117        { USB_VENDOR_ID_TURBOX, USB_DEVICE_ID_TURBOX_KEYBOARD, HID_QUIRK_NOGET },
118        { USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_KNA5, HID_QUIRK_MULTI_INPUT },
119        { USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_TWA60, HID_QUIRK_MULTI_INPUT },
120        { USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_MEDIA_TABLET_10_6_INCH, HID_QUIRK_MULTI_INPUT },
121        { USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_MEDIA_TABLET_14_1_INCH, HID_QUIRK_MULTI_INPUT },
122        { USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_SIRIUS_BATTERY_FREE_TABLET, HID_QUIRK_MULTI_INPUT },
123        { USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_QUAD_USB_JOYPAD, HID_QUIRK_NOGET | HID_QUIRK_MULTI_INPUT },
124
125        { USB_VENDOR_ID_WISEGROUP_LTD2, USB_DEVICE_ID_SMARTJOY_DUAL_PLUS, HID_QUIRK_NOGET | HID_QUIRK_MULTI_INPUT },
126
127        { USB_VENDOR_ID_PI_ENGINEERING, USB_DEVICE_ID_PI_ENGINEERING_VEC_USB_FOOTPEDAL, HID_QUIRK_HIDINPUT_FORCE },
128
129        { USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_MULTI_TOUCH, HID_QUIRK_MULTI_INPUT },
130        { USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_WIRELESS, HID_QUIRK_MULTI_INPUT },
131        { USB_VENDOR_ID_SIGMA_MICRO, USB_DEVICE_ID_SIGMA_MICRO_KEYBOARD, HID_QUIRK_NO_INIT_REPORTS },
132        { USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_MOUSEPEN_I608X, HID_QUIRK_MULTI_INPUT },
133        { USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_MOUSEPEN_I608X_2, HID_QUIRK_MULTI_INPUT },
134        { USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_EASYPEN_M610X, HID_QUIRK_MULTI_INPUT },
135        { USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_PENSKETCH_M912, HID_QUIRK_MULTI_INPUT },
136        { USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_DUOSENSE, HID_QUIRK_NO_INIT_REPORTS },
137        { USB_VENDOR_ID_SEMICO, USB_DEVICE_ID_SEMICO_USB_KEYKOARD, HID_QUIRK_NO_INIT_REPORTS },
138        { USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_LTS1, HID_QUIRK_NO_INIT_REPORTS },
139        { USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_LTS2, HID_QUIRK_NO_INIT_REPORTS },
140        { USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_HD, HID_QUIRK_NO_INIT_REPORTS },
141        { USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_QUAD_HD, HID_QUIRK_NO_INIT_REPORTS },
142        { USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_TP_V103, HID_QUIRK_NO_INIT_REPORTS },
143        { USB_VENDOR_ID_HOLTEK_ALT, USB_DEVICE_ID_HOLTEK_ALT_KEYBOARD_A096, HID_QUIRK_NO_INIT_INPUT_REPORTS },
144        { USB_VENDOR_ID_MULTIPLE_1781, USB_DEVICE_ID_RAPHNET_4NES4SNES_OLD, HID_QUIRK_MULTI_INPUT },
145        { USB_VENDOR_ID_DRACAL_RAPHNET, USB_DEVICE_ID_RAPHNET_2NES2SNES, HID_QUIRK_MULTI_INPUT },
146        { USB_VENDOR_ID_DRACAL_RAPHNET, USB_DEVICE_ID_RAPHNET_4NES4SNES, HID_QUIRK_MULTI_INPUT },
147
148        { 0, 0 }
149};
150
151/* Dynamic HID quirks list - specified at runtime */
152struct quirks_list_struct {
153        struct hid_blacklist hid_bl_item;
154        struct list_head node;
155};
156
157static LIST_HEAD(dquirks_list);
158static DECLARE_RWSEM(dquirks_rwsem);
159
160/* Runtime ("dynamic") quirks manipulation functions */
161
162/**
163 * usbhid_exists_dquirk: find any dynamic quirks for a USB HID device
164 * @idVendor: the 16-bit USB vendor ID, in native byteorder
165 * @idProduct: the 16-bit USB product ID, in native byteorder
166 *
167 * Description:
168 *         Scans dquirks_list for a matching dynamic quirk and returns
169 *         the pointer to the relevant struct hid_blacklist if found.
170 *         Must be called with a read lock held on dquirks_rwsem.
171 *
172 * Returns: NULL if no quirk found, struct hid_blacklist * if found.
173 */
174static struct hid_blacklist *usbhid_exists_dquirk(const u16 idVendor,
175                const u16 idProduct)
176{
177        struct quirks_list_struct *q;
178        struct hid_blacklist *bl_entry = NULL;
179
180        list_for_each_entry(q, &dquirks_list, node) {
181                if (q->hid_bl_item.idVendor == idVendor &&
182                                q->hid_bl_item.idProduct == idProduct) {
183                        bl_entry = &q->hid_bl_item;
184                        break;
185                }
186        }
187
188        if (bl_entry != NULL)
189                dbg_hid("Found dynamic quirk 0x%x for USB HID vendor 0x%hx prod 0x%hx\n",
190                                bl_entry->quirks, bl_entry->idVendor,
191                                bl_entry->idProduct);
192
193        return bl_entry;
194}
195
196
197/**
198 * usbhid_modify_dquirk: add/replace a HID quirk
199 * @idVendor: the 16-bit USB vendor ID, in native byteorder
200 * @idProduct: the 16-bit USB product ID, in native byteorder
201 * @quirks: the u32 quirks value to add/replace
202 *
203 * Description:
204 *         If an dynamic quirk exists in memory for this (idVendor,
205 *         idProduct) pair, replace its quirks value with what was
206 *         provided.  Otherwise, add the quirk to the dynamic quirks list.
207 *
208 * Returns: 0 OK, -error on failure.
209 */
210static int usbhid_modify_dquirk(const u16 idVendor, const u16 idProduct,
211                                const u32 quirks)
212{
213        struct quirks_list_struct *q_new, *q;
214        int list_edited = 0;
215
216        if (!idVendor) {
217                dbg_hid("Cannot add a quirk with idVendor = 0\n");
218                return -EINVAL;
219        }
220
221        q_new = kmalloc(sizeof(struct quirks_list_struct), GFP_KERNEL);
222        if (!q_new) {
223                dbg_hid("Could not allocate quirks_list_struct\n");
224                return -ENOMEM;
225        }
226
227        q_new->hid_bl_item.idVendor = idVendor;
228        q_new->hid_bl_item.idProduct = idProduct;
229        q_new->hid_bl_item.quirks = quirks;
230
231        down_write(&dquirks_rwsem);
232
233        list_for_each_entry(q, &dquirks_list, node) {
234
235                if (q->hid_bl_item.idVendor == idVendor &&
236                                q->hid_bl_item.idProduct == idProduct) {
237
238                        list_replace(&q->node, &q_new->node);
239                        kfree(q);
240                        list_edited = 1;
241                        break;
242
243                }
244
245        }
246
247        if (!list_edited)
248                list_add_tail(&q_new->node, &dquirks_list);
249
250        up_write(&dquirks_rwsem);
251
252        return 0;
253}
254
255/**
256 * usbhid_remove_all_dquirks: remove all runtime HID quirks from memory
257 *
258 * Description:
259 *         Free all memory associated with dynamic quirks - called before
260 *         module unload.
261 *
262 */
263static void usbhid_remove_all_dquirks(void)
264{
265        struct quirks_list_struct *q, *temp;
266
267        down_write(&dquirks_rwsem);
268        list_for_each_entry_safe(q, temp, &dquirks_list, node) {
269                list_del(&q->node);
270                kfree(q);
271        }
272        up_write(&dquirks_rwsem);
273
274}
275
276/**
277 * usbhid_quirks_init: apply USB HID quirks specified at module load time
278 */
279int usbhid_quirks_init(char **quirks_param)
280{
281        u16 idVendor, idProduct;
282        u32 quirks;
283        int n = 0, m;
284
285        for (; n < MAX_USBHID_BOOT_QUIRKS && quirks_param[n]; n++) {
286
287                m = sscanf(quirks_param[n], "0x%hx:0x%hx:0x%x",
288                                &idVendor, &idProduct, &quirks);
289
290                if (m != 3 ||
291                                usbhid_modify_dquirk(idVendor, idProduct, quirks) != 0) {
292                        printk(KERN_WARNING
293                                        "Could not parse HID quirk module param %s\n",
294                                        quirks_param[n]);
295                }
296        }
297
298        return 0;
299}
300
301/**
302 * usbhid_quirks_exit: release memory associated with dynamic_quirks
303 *
304 * Description:
305 *     Release all memory associated with dynamic quirks.  Called upon
306 *     module unload.
307 *
308 * Returns: nothing
309 */
310void usbhid_quirks_exit(void)
311{
312        usbhid_remove_all_dquirks();
313}
314
315/**
316 * usbhid_exists_squirk: return any static quirks for a USB HID device
317 * @idVendor: the 16-bit USB vendor ID, in native byteorder
318 * @idProduct: the 16-bit USB product ID, in native byteorder
319 *
320 * Description:
321 *     Given a USB vendor ID and product ID, return a pointer to
322 *     the hid_blacklist entry associated with that device.
323 *
324 * Returns: pointer if quirk found, or NULL if no quirks found.
325 */
326static const struct hid_blacklist *usbhid_exists_squirk(const u16 idVendor,
327                const u16 idProduct)
328{
329        const struct hid_blacklist *bl_entry = NULL;
330        int n = 0;
331
332        for (; hid_blacklist[n].idVendor; n++)
333                if (hid_blacklist[n].idVendor == idVendor &&
334                                hid_blacklist[n].idProduct == idProduct)
335                        bl_entry = &hid_blacklist[n];
336
337        if (bl_entry != NULL)
338                dbg_hid("Found squirk 0x%x for USB HID vendor 0x%hx prod 0x%hx\n",
339                                bl_entry->quirks, bl_entry->idVendor,
340                                bl_entry->idProduct);
341        return bl_entry;
342}
343
344/**
345 * usbhid_lookup_quirk: return any quirks associated with a USB HID device
346 * @idVendor: the 16-bit USB vendor ID, in native byteorder
347 * @idProduct: the 16-bit USB product ID, in native byteorder
348 *
349 * Description:
350 *     Given a USB vendor ID and product ID, return any quirks associated
351 *     with that device.
352 *
353 * Returns: a u32 quirks value.
354 */
355u32 usbhid_lookup_quirk(const u16 idVendor, const u16 idProduct)
356{
357        u32 quirks = 0;
358        const struct hid_blacklist *bl_entry = NULL;
359
360        /* NCR devices must not be queried for reports */
361        if (idVendor == USB_VENDOR_ID_NCR &&
362                        idProduct >= USB_DEVICE_ID_NCR_FIRST &&
363                        idProduct <= USB_DEVICE_ID_NCR_LAST)
364                        return HID_QUIRK_NO_INIT_REPORTS;
365
366        down_read(&dquirks_rwsem);
367        bl_entry = usbhid_exists_dquirk(idVendor, idProduct);
368        if (!bl_entry)
369                bl_entry = usbhid_exists_squirk(idVendor, idProduct);
370        if (bl_entry)
371                quirks = bl_entry->quirks;
372        up_read(&dquirks_rwsem);
373
374        return quirks;
375}
376
377EXPORT_SYMBOL_GPL(usbhid_lookup_quirk);
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