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Commit | Line | Data |
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2eb5dc30 PW |
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> | |
ec37d321 | 19 | #include <linux/export.h> |
5a0e3ad6 | 20 | #include <linux/slab.h> |
2eb5dc30 | 21 | |
990436a7 | 22 | #include "../hid-ids.h" |
a32bcc45 | 23 | |
2eb5dc30 PW |
24 | /* |
25 | * Alphabetically sorted blacklist by quirk type. | |
26 | */ | |
27 | ||
28 | static const struct hid_blacklist { | |
29 | __u16 idVendor; | |
30 | __u16 idProduct; | |
31 | __u32 quirks; | |
32 | } hid_blacklist[] = { | |
2eb5dc30 PW |
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 }, | |
d34c4aa4 | 37 | { USB_VENDOR_ID_DWAV, USB_DEVICE_ID_EGALAX_TOUCHCONTROLLER, HID_QUIRK_MULTI_INPUT | HID_QUIRK_NOGET }, |
1f45e324 | 38 | { USB_VENDOR_ID_MOJO, USB_DEVICE_ID_RETRO_ADAPTER, HID_QUIRK_MULTI_INPUT }, |
2eb5dc30 PW |
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 }, | |
c9bde7ad | 42 | { USB_VENDOR_ID_NATSU, USB_DEVICE_ID_NATSU_GAMEPAD, HID_QUIRK_BADPAD }, |
2eb5dc30 | 43 | { USB_VENDOR_ID_NEC, USB_DEVICE_ID_NEC_USB_GAME_PAD, HID_QUIRK_BADPAD }, |
9db630b4 | 44 | { USB_VENDOR_ID_NEXTWINDOW, USB_DEVICE_ID_NEXTWINDOW_TOUCHSCREEN, HID_QUIRK_MULTI_INPUT}, |
2eb5dc30 PW |
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 }, | |
2c3e3bfb | 47 | |
f345c37c PS |
48 | { USB_VENDOR_ID_AFATECH, USB_DEVICE_ID_AFATECH_AF9016, HID_QUIRK_FULLSPEED_INTERVAL }, |
49 | ||
cd07655e | 50 | { USB_VENDOR_ID_EMS, USB_DEVICE_ID_EMS_TRIO_LINKER_PLUS_II, HID_QUIRK_MULTI_INPUT }, |
8127f4e8 | 51 | { USB_VENDOR_ID_ETURBOTOUCH, USB_DEVICE_ID_ETURBOTOUCH, HID_QUIRK_MULTI_INPUT }, |
6d1db077 | 52 | { USB_VENDOR_ID_GREENASIA, USB_DEVICE_ID_GREENASIA_DUAL_USB_JOYPAD, HID_QUIRK_MULTI_INPUT }, |
2eb5dc30 PW |
53 | { USB_VENDOR_ID_PANTHERLORD, USB_DEVICE_ID_PANTHERLORD_TWIN_USB_JOYSTICK, HID_QUIRK_MULTI_INPUT | HID_QUIRK_SKIP_OUTPUT_REPORTS }, |
54 | { USB_VENDOR_ID_PLAYDOTCOM, USB_DEVICE_ID_PLAYDOTCOM_EMS_USBII, HID_QUIRK_MULTI_INPUT }, | |
c2c3489c | 55 | { USB_VENDOR_ID_TOUCHPACK, USB_DEVICE_ID_TOUCHPACK_RTS, HID_QUIRK_MULTI_INPUT }, |
2eb5dc30 | 56 | |
37891abc | 57 | { USB_VENDOR_ID_AIREN, USB_DEVICE_ID_AIREN_SLIMPLUS, HID_QUIRK_NOGET }, |
2eb5dc30 PW |
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 }, | |
724ed328 | 63 | { USB_VENDOR_ID_CH, USB_DEVICE_ID_CH_FIGHTERSTICK, HID_QUIRK_NOGET }, |
b820aabf | 64 | { USB_VENDOR_ID_CH, USB_DEVICE_ID_CH_COMBATSTICK, HID_QUIRK_NOGET }, |
c8e84646 | 65 | { USB_VENDOR_ID_CH, USB_DEVICE_ID_CH_FLIGHT_SIM_ECLIPSE_YOKE, HID_QUIRK_NOGET }, |
b820aabf | 66 | { USB_VENDOR_ID_CH, USB_DEVICE_ID_CH_FLIGHT_SIM_YOKE, HID_QUIRK_NOGET }, |
da60325d | 67 | { USB_VENDOR_ID_CH, USB_DEVICE_ID_CH_PRO_THROTTLE, HID_QUIRK_NOGET }, |
b820aabf | 68 | { USB_VENDOR_ID_CH, USB_DEVICE_ID_CH_PRO_PEDALS, HID_QUIRK_NOGET }, |
73cdcf56 | 69 | { USB_VENDOR_ID_CH, USB_DEVICE_ID_CH_3AXIS_5BUTTON_STICK, HID_QUIRK_NOGET }, |
8038298f | 70 | { USB_VENDOR_ID_CH, USB_DEVICE_ID_CH_AXIS_295, HID_QUIRK_NOGET }, |
02008faa | 71 | { USB_VENDOR_ID_DMI, USB_DEVICE_ID_DMI_ENC, HID_QUIRK_NOGET }, |
d500d116 | 72 | { USB_VENDOR_ID_ELO, USB_DEVICE_ID_ELO_TS2700, HID_QUIRK_NOGET }, |
320cde19 | 73 | { USB_VENDOR_ID_FORMOSA, USB_DEVICE_ID_FORMOSA_IR_RECEIVER, HID_QUIRK_NO_INIT_REPORTS }, |
2843b673 | 74 | { USB_VENDOR_ID_FREESCALE, USB_DEVICE_ID_FREESCALE_MX28, HID_QUIRK_NOGET }, |
67ddbb3e | 75 | { USB_VENDOR_ID_MGE, USB_DEVICE_ID_MGE_UPS, HID_QUIRK_NOGET }, |
570637dc | 76 | { USB_VENDOR_ID_MSI, USB_DEVICE_ID_MSI_GX680R_LED_PANEL, HID_QUIRK_NO_INIT_REPORTS }, |
29191039 | 77 | { USB_VENDOR_ID_NEXIO, USB_DEVICE_ID_NEXIO_MULTITOUCH_PTI0750, HID_QUIRK_NO_INIT_REPORTS }, |
b8a8f515 | 78 | { USB_VENDOR_ID_NOVATEK, USB_DEVICE_ID_NOVATEK_MOUSE, HID_QUIRK_NO_INIT_REPORTS }, |
b7ea95ff AT |
79 | { USB_VENDOR_ID_PIXART, USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN, HID_QUIRK_NO_INIT_REPORTS }, |
80 | { USB_VENDOR_ID_PIXART, USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN1, HID_QUIRK_NO_INIT_REPORTS }, | |
81 | { USB_VENDOR_ID_PIXART, USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN2, HID_QUIRK_NO_INIT_REPORTS }, | |
c2c3489c | 82 | { USB_VENDOR_ID_PRODIGE, USB_DEVICE_ID_PRODIGE_CORDLESS, HID_QUIRK_NOGET }, |
b0be5b3b | 83 | { USB_VENDOR_ID_QUANTA, USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH_3001, HID_QUIRK_NOGET }, |
8d31321c | 84 | { USB_VENDOR_ID_QUANTA, USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH_3008, HID_QUIRK_NOGET }, |
3d464d9b | 85 | { USB_VENDOR_ID_REALTEK, USB_DEVICE_ID_REALTEK_READER, HID_QUIRK_NO_INIT_REPORTS }, |
0e050923 | 86 | { USB_VENDOR_ID_SENNHEISER, USB_DEVICE_ID_SENNHEISER_BTD500USB, HID_QUIRK_NOGET }, |
436136ce | 87 | { USB_VENDOR_ID_SIGMATEL, USB_DEVICE_ID_SIGMATEL_STMP3780, HID_QUIRK_NOGET }, |
765e5fbd AK |
88 | { USB_VENDOR_ID_SIS_TOUCH, USB_DEVICE_ID_SIS9200_TOUCH, HID_QUIRK_NOGET }, |
89 | { USB_VENDOR_ID_SIS_TOUCH, USB_DEVICE_ID_SIS817_TOUCH, HID_QUIRK_NOGET }, | |
90 | { USB_VENDOR_ID_SIS_TOUCH, USB_DEVICE_ID_SIS_TS, HID_QUIRK_NO_INIT_REPORTS }, | |
954bb3da | 91 | { USB_VENDOR_ID_SIS_TOUCH, USB_DEVICE_ID_SIS1030_TOUCH, HID_QUIRK_NOGET }, |
2eb5dc30 | 92 | { USB_VENDOR_ID_SUN, USB_DEVICE_ID_RARITAN_KVM_DONGLE, HID_QUIRK_NOGET }, |
4b5730fa JK |
93 | { USB_VENDOR_ID_SYMBOL, USB_DEVICE_ID_SYMBOL_SCANNER_1, HID_QUIRK_NOGET }, |
94 | { USB_VENDOR_ID_SYMBOL, USB_DEVICE_ID_SYMBOL_SCANNER_2, HID_QUIRK_NOGET }, | |
88c687b3 | 95 | { USB_VENDOR_ID_TPV, USB_DEVICE_ID_TPV_OPTICAL_TOUCHSCREEN, HID_QUIRK_NOGET }, |
2eb5dc30 | 96 | { USB_VENDOR_ID_TURBOX, USB_DEVICE_ID_TURBOX_KEYBOARD, HID_QUIRK_NOGET }, |
25e61613 | 97 | { USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_PF1209, HID_QUIRK_MULTI_INPUT }, |
eff7f270 | 98 | { USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_WP4030U, HID_QUIRK_MULTI_INPUT }, |
426409b1 | 99 | { USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_KNA5, HID_QUIRK_MULTI_INPUT }, |
e23be0a2 | 100 | { USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_TWA60, HID_QUIRK_MULTI_INPUT }, |
f8a489cc NK |
101 | { USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_WP5540U, HID_QUIRK_MULTI_INPUT }, |
102 | { USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_WP8060U, HID_QUIRK_MULTI_INPUT }, | |
72a46344 | 103 | { USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_MEDIA_TABLET_10_6_INCH, HID_QUIRK_MULTI_INPUT }, |
8f1acc32 | 104 | { USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_MEDIA_TABLET_14_1_INCH, HID_QUIRK_MULTI_INPUT }, |
d2ee4dd9 | 105 | { USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_SIRIUS_BATTERY_FREE_TABLET, HID_QUIRK_MULTI_INPUT }, |
2eb5dc30 PW |
106 | { USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_QUAD_USB_JOYPAD, HID_QUIRK_NOGET | HID_QUIRK_MULTI_INPUT }, |
107 | ||
66ebf66e | 108 | { USB_VENDOR_ID_WISEGROUP_LTD2, USB_DEVICE_ID_SMARTJOY_DUAL_PLUS, HID_QUIRK_NOGET | HID_QUIRK_MULTI_INPUT }, |
2eb5dc30 | 109 | |
70c7c9c4 DM |
110 | { USB_VENDOR_ID_PI_ENGINEERING, USB_DEVICE_ID_PI_ENGINEERING_VEC_USB_FOOTPEDAL, HID_QUIRK_HIDINPUT_FORCE }, |
111 | ||
7cacfa87 | 112 | { USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_MULTI_TOUCH, HID_QUIRK_MULTI_INPUT }, |
b9e4b1e0 | 113 | { USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_WIRELESS, HID_QUIRK_MULTI_INPUT }, |
f5e42825 | 114 | { USB_VENDOR_ID_SIGMA_MICRO, USB_DEVICE_ID_SIGMA_MICRO_KEYBOARD, HID_QUIRK_NO_INIT_REPORTS }, |
22ca20b2 NK |
115 | { USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_MOUSEPEN_I608X, HID_QUIRK_MULTI_INPUT }, |
116 | { USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_EASYPEN_M610X, HID_QUIRK_MULTI_INPUT }, | |
9e0bf92c | 117 | { USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_DUOSENSE, HID_QUIRK_NO_INIT_REPORTS }, |
8171a67d AK |
118 | { USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_LTS1, HID_QUIRK_NO_INIT_REPORTS }, |
119 | { USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_LTS2, HID_QUIRK_NO_INIT_REPORTS }, | |
d8e2e758 | 120 | { USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_HD, HID_QUIRK_NO_INIT_REPORTS }, |
12f508ae | 121 | { USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_QUAD_HD, HID_QUIRK_NO_INIT_REPORTS }, |
9e0bf92c | 122 | |
ea9a4a8b JK |
123 | { 0, 0 } |
124 | }; | |
125 | ||
8cef9082 PW |
126 | /* Dynamic HID quirks list - specified at runtime */ |
127 | struct quirks_list_struct { | |
128 | struct hid_blacklist hid_bl_item; | |
129 | struct list_head node; | |
130 | }; | |
131 | ||
132 | static LIST_HEAD(dquirks_list); | |
133 | static DECLARE_RWSEM(dquirks_rwsem); | |
134 | ||
135 | /* Runtime ("dynamic") quirks manipulation functions */ | |
136 | ||
8222fbe6 | 137 | /** |
8cef9082 PW |
138 | * usbhid_exists_dquirk: find any dynamic quirks for a USB HID device |
139 | * @idVendor: the 16-bit USB vendor ID, in native byteorder | |
140 | * @idProduct: the 16-bit USB product ID, in native byteorder | |
141 | * | |
142 | * Description: | |
143 | * Scans dquirks_list for a matching dynamic quirk and returns | |
144 | * the pointer to the relevant struct hid_blacklist if found. | |
145 | * Must be called with a read lock held on dquirks_rwsem. | |
146 | * | |
147 | * Returns: NULL if no quirk found, struct hid_blacklist * if found. | |
148 | */ | |
149 | static struct hid_blacklist *usbhid_exists_dquirk(const u16 idVendor, | |
150 | const u16 idProduct) | |
151 | { | |
152 | struct quirks_list_struct *q; | |
153 | struct hid_blacklist *bl_entry = NULL; | |
154 | ||
8cef9082 PW |
155 | list_for_each_entry(q, &dquirks_list, node) { |
156 | if (q->hid_bl_item.idVendor == idVendor && | |
157 | q->hid_bl_item.idProduct == idProduct) { | |
158 | bl_entry = &q->hid_bl_item; | |
159 | break; | |
160 | } | |
161 | } | |
162 | ||
163 | if (bl_entry != NULL) | |
58037eb9 | 164 | dbg_hid("Found dynamic quirk 0x%x for USB HID vendor 0x%hx prod 0x%hx\n", |
8cef9082 PW |
165 | bl_entry->quirks, bl_entry->idVendor, |
166 | bl_entry->idProduct); | |
167 | ||
168 | return bl_entry; | |
169 | } | |
170 | ||
171 | ||
172 | /** | |
173 | * usbhid_modify_dquirk: add/replace a HID quirk | |
174 | * @idVendor: the 16-bit USB vendor ID, in native byteorder | |
175 | * @idProduct: the 16-bit USB product ID, in native byteorder | |
176 | * @quirks: the u32 quirks value to add/replace | |
177 | * | |
178 | * Description: | |
179 | * If an dynamic quirk exists in memory for this (idVendor, | |
180 | * idProduct) pair, replace its quirks value with what was | |
181 | * provided. Otherwise, add the quirk to the dynamic quirks list. | |
182 | * | |
183 | * Returns: 0 OK, -error on failure. | |
184 | */ | |
abdff0f7 AB |
185 | static int usbhid_modify_dquirk(const u16 idVendor, const u16 idProduct, |
186 | const u32 quirks) | |
8cef9082 PW |
187 | { |
188 | struct quirks_list_struct *q_new, *q; | |
189 | int list_edited = 0; | |
190 | ||
191 | if (!idVendor) { | |
58037eb9 | 192 | dbg_hid("Cannot add a quirk with idVendor = 0\n"); |
8cef9082 PW |
193 | return -EINVAL; |
194 | } | |
195 | ||
196 | q_new = kmalloc(sizeof(struct quirks_list_struct), GFP_KERNEL); | |
197 | if (!q_new) { | |
58037eb9 | 198 | dbg_hid("Could not allocate quirks_list_struct\n"); |
8cef9082 PW |
199 | return -ENOMEM; |
200 | } | |
201 | ||
202 | q_new->hid_bl_item.idVendor = idVendor; | |
203 | q_new->hid_bl_item.idProduct = idProduct; | |
204 | q_new->hid_bl_item.quirks = quirks; | |
205 | ||
206 | down_write(&dquirks_rwsem); | |
207 | ||
208 | list_for_each_entry(q, &dquirks_list, node) { | |
209 | ||
210 | if (q->hid_bl_item.idVendor == idVendor && | |
211 | q->hid_bl_item.idProduct == idProduct) { | |
212 | ||
213 | list_replace(&q->node, &q_new->node); | |
214 | kfree(q); | |
215 | list_edited = 1; | |
216 | break; | |
217 | ||
218 | } | |
219 | ||
220 | } | |
221 | ||
222 | if (!list_edited) | |
223 | list_add_tail(&q_new->node, &dquirks_list); | |
224 | ||
225 | up_write(&dquirks_rwsem); | |
226 | ||
227 | return 0; | |
228 | } | |
229 | ||
8cef9082 PW |
230 | /** |
231 | * usbhid_remove_all_dquirks: remove all runtime HID quirks from memory | |
232 | * | |
233 | * Description: | |
234 | * Free all memory associated with dynamic quirks - called before | |
235 | * module unload. | |
236 | * | |
237 | */ | |
238 | static void usbhid_remove_all_dquirks(void) | |
239 | { | |
240 | struct quirks_list_struct *q, *temp; | |
241 | ||
242 | down_write(&dquirks_rwsem); | |
243 | list_for_each_entry_safe(q, temp, &dquirks_list, node) { | |
244 | list_del(&q->node); | |
245 | kfree(q); | |
246 | } | |
247 | up_write(&dquirks_rwsem); | |
248 | ||
249 | } | |
250 | ||
876b9276 PW |
251 | /** |
252 | * usbhid_quirks_init: apply USB HID quirks specified at module load time | |
253 | */ | |
254 | int usbhid_quirks_init(char **quirks_param) | |
255 | { | |
256 | u16 idVendor, idProduct; | |
257 | u32 quirks; | |
258 | int n = 0, m; | |
259 | ||
44cb2db1 | 260 | for (; n < MAX_USBHID_BOOT_QUIRKS && quirks_param[n]; n++) { |
876b9276 PW |
261 | |
262 | m = sscanf(quirks_param[n], "0x%hx:0x%hx:0x%x", | |
263 | &idVendor, &idProduct, &quirks); | |
264 | ||
265 | if (m != 3 || | |
266 | usbhid_modify_dquirk(idVendor, idProduct, quirks) != 0) { | |
267 | printk(KERN_WARNING | |
268 | "Could not parse HID quirk module param %s\n", | |
269 | quirks_param[n]); | |
270 | } | |
271 | } | |
272 | ||
273 | return 0; | |
274 | } | |
275 | ||
276 | /** | |
277 | * usbhid_quirks_exit: release memory associated with dynamic_quirks | |
278 | * | |
279 | * Description: | |
280 | * Release all memory associated with dynamic quirks. Called upon | |
281 | * module unload. | |
282 | * | |
283 | * Returns: nothing | |
284 | */ | |
285 | void usbhid_quirks_exit(void) | |
286 | { | |
287 | usbhid_remove_all_dquirks(); | |
288 | } | |
8cef9082 PW |
289 | |
290 | /** | |
291 | * usbhid_exists_squirk: return any static quirks for a USB HID device | |
292 | * @idVendor: the 16-bit USB vendor ID, in native byteorder | |
293 | * @idProduct: the 16-bit USB product ID, in native byteorder | |
294 | * | |
295 | * Description: | |
296 | * Given a USB vendor ID and product ID, return a pointer to | |
297 | * the hid_blacklist entry associated with that device. | |
298 | * | |
299 | * Returns: pointer if quirk found, or NULL if no quirks found. | |
300 | */ | |
8222fbe6 | 301 | static const struct hid_blacklist *usbhid_exists_squirk(const u16 idVendor, |
8cef9082 | 302 | const u16 idProduct) |
8222fbe6 | 303 | { |
8cef9082 PW |
304 | const struct hid_blacklist *bl_entry = NULL; |
305 | int n = 0; | |
8222fbe6 PW |
306 | |
307 | for (; hid_blacklist[n].idVendor; n++) | |
308 | if (hid_blacklist[n].idVendor == idVendor && | |
309 | hid_blacklist[n].idProduct == idProduct) | |
310 | bl_entry = &hid_blacklist[n]; | |
311 | ||
312 | if (bl_entry != NULL) | |
58037eb9 | 313 | dbg_hid("Found squirk 0x%x for USB HID vendor 0x%hx prod 0x%hx\n", |
8222fbe6 PW |
314 | bl_entry->quirks, bl_entry->idVendor, |
315 | bl_entry->idProduct); | |
316 | return bl_entry; | |
317 | } | |
2eb5dc30 PW |
318 | |
319 | /** | |
320 | * usbhid_lookup_quirk: return any quirks associated with a USB HID device | |
321 | * @idVendor: the 16-bit USB vendor ID, in native byteorder | |
322 | * @idProduct: the 16-bit USB product ID, in native byteorder | |
323 | * | |
324 | * Description: | |
325 | * Given a USB vendor ID and product ID, return any quirks associated | |
326 | * with that device. | |
327 | * | |
328 | * Returns: a u32 quirks value. | |
329 | */ | |
330 | u32 usbhid_lookup_quirk(const u16 idVendor, const u16 idProduct) | |
331 | { | |
332 | u32 quirks = 0; | |
8222fbe6 | 333 | const struct hid_blacklist *bl_entry = NULL; |
2eb5dc30 | 334 | |
b8e98f1c JK |
335 | /* NCR devices must not be queried for reports */ |
336 | if (idVendor == USB_VENDOR_ID_NCR && | |
337 | idProduct >= USB_DEVICE_ID_NCR_FIRST && | |
338 | idProduct <= USB_DEVICE_ID_NCR_LAST) | |
5b915d9e | 339 | return HID_QUIRK_NO_INIT_REPORTS; |
b8e98f1c | 340 | |
8cef9082 PW |
341 | down_read(&dquirks_rwsem); |
342 | bl_entry = usbhid_exists_dquirk(idVendor, idProduct); | |
343 | if (!bl_entry) | |
344 | bl_entry = usbhid_exists_squirk(idVendor, idProduct); | |
8222fbe6 PW |
345 | if (bl_entry) |
346 | quirks = bl_entry->quirks; | |
8cef9082 PW |
347 | up_read(&dquirks_rwsem); |
348 | ||
2eb5dc30 PW |
349 | return quirks; |
350 | } | |
8222fbe6 | 351 | |
9f6b3727 | 352 | EXPORT_SYMBOL_GPL(usbhid_lookup_quirk); |