]> git.karo-electronics.de Git - karo-tx-linux.git/blob - drivers/hid/usbhid/hid-quirks.c
Merge remote-tracking branch 'usb-chipidea-next/ci-for-usb-next'
[karo-tx-linux.git] / 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/export.h>
20 #include <linux/slab.h>
21
22 #include "../hid-ids.h"
23
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[] = {
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_AKAI, USB_DEVICE_ID_AKAI_MPKMINI2, HID_QUIRK_NO_INIT_REPORTS },
59         { USB_VENDOR_ID_ATEN, USB_DEVICE_ID_ATEN_UC100KM, HID_QUIRK_NOGET },
60         { USB_VENDOR_ID_ATEN, USB_DEVICE_ID_ATEN_CS124U, HID_QUIRK_NOGET },
61         { USB_VENDOR_ID_ATEN, USB_DEVICE_ID_ATEN_2PORTKVM, HID_QUIRK_NOGET },
62         { USB_VENDOR_ID_ATEN, USB_DEVICE_ID_ATEN_4PORTKVM, HID_QUIRK_NOGET },
63         { USB_VENDOR_ID_ATEN, USB_DEVICE_ID_ATEN_4PORTKVMC, HID_QUIRK_NOGET },
64         { USB_VENDOR_ID_ATEN, USB_DEVICE_ID_ATEN_CS682, 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_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_3003, HID_QUIRK_NOGET },
111         { USB_VENDOR_ID_QUANTA, USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH_3008, HID_QUIRK_NOGET },
112         { USB_VENDOR_ID_REALTEK, USB_DEVICE_ID_REALTEK_READER, HID_QUIRK_NO_INIT_REPORTS },
113         { USB_VENDOR_ID_SENNHEISER, USB_DEVICE_ID_SENNHEISER_BTD500USB, HID_QUIRK_NOGET },
114         { USB_VENDOR_ID_SIGMATEL, USB_DEVICE_ID_SIGMATEL_STMP3780, HID_QUIRK_NOGET },
115         { USB_VENDOR_ID_SIS_TOUCH, USB_DEVICE_ID_SIS9200_TOUCH, HID_QUIRK_NOGET },
116         { USB_VENDOR_ID_SIS_TOUCH, USB_DEVICE_ID_SIS817_TOUCH, HID_QUIRK_NOGET },
117         { USB_VENDOR_ID_SIS_TOUCH, USB_DEVICE_ID_SIS_TS, HID_QUIRK_NO_INIT_REPORTS },
118         { USB_VENDOR_ID_SIS_TOUCH, USB_DEVICE_ID_SIS1030_TOUCH, HID_QUIRK_NOGET },
119         { USB_VENDOR_ID_SUN, USB_DEVICE_ID_RARITAN_KVM_DONGLE, HID_QUIRK_NOGET },
120         { USB_VENDOR_ID_SYMBOL, USB_DEVICE_ID_SYMBOL_SCANNER_1, HID_QUIRK_NOGET },
121         { USB_VENDOR_ID_SYMBOL, USB_DEVICE_ID_SYMBOL_SCANNER_2, HID_QUIRK_NOGET },
122         { USB_VENDOR_ID_TPV, USB_DEVICE_ID_TPV_OPTICAL_TOUCHSCREEN_8882, HID_QUIRK_NOGET },
123         { USB_VENDOR_ID_TPV, USB_DEVICE_ID_TPV_OPTICAL_TOUCHSCREEN_8883, HID_QUIRK_NOGET },
124         { USB_VENDOR_ID_TURBOX, USB_DEVICE_ID_TURBOX_KEYBOARD, HID_QUIRK_NOGET },
125         { USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_KNA5, HID_QUIRK_MULTI_INPUT },
126         { USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_TWA60, HID_QUIRK_MULTI_INPUT },
127         { USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_MEDIA_TABLET_10_6_INCH, HID_QUIRK_MULTI_INPUT },
128         { USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_MEDIA_TABLET_14_1_INCH, HID_QUIRK_MULTI_INPUT },
129         { USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_SIRIUS_BATTERY_FREE_TABLET, HID_QUIRK_MULTI_INPUT },
130         { USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_QUAD_USB_JOYPAD, HID_QUIRK_NOGET | HID_QUIRK_MULTI_INPUT },
131
132         { USB_VENDOR_ID_WISEGROUP_LTD2, USB_DEVICE_ID_SMARTJOY_DUAL_PLUS, HID_QUIRK_NOGET | HID_QUIRK_MULTI_INPUT },
133
134         { USB_VENDOR_ID_PI_ENGINEERING, USB_DEVICE_ID_PI_ENGINEERING_VEC_USB_FOOTPEDAL, HID_QUIRK_HIDINPUT_FORCE },
135
136         { USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_MULTI_TOUCH, HID_QUIRK_MULTI_INPUT },
137         { USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_WIRELESS, HID_QUIRK_MULTI_INPUT },
138         { USB_VENDOR_ID_SIGMA_MICRO, USB_DEVICE_ID_SIGMA_MICRO_KEYBOARD, HID_QUIRK_NO_INIT_REPORTS },
139         { USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_MOUSEPEN_I608X, HID_QUIRK_MULTI_INPUT },
140         { USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_MOUSEPEN_I608X_2, HID_QUIRK_MULTI_INPUT },
141         { USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_EASYPEN_M610X, HID_QUIRK_MULTI_INPUT },
142         { USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_PENSKETCH_M912, HID_QUIRK_MULTI_INPUT },
143         { USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_DUOSENSE, HID_QUIRK_NO_INIT_REPORTS },
144         { USB_VENDOR_ID_SEMICO, USB_DEVICE_ID_SEMICO_USB_KEYKOARD, HID_QUIRK_NO_INIT_REPORTS },
145         { USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_LTS1, HID_QUIRK_NO_INIT_REPORTS },
146         { USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_LTS2, HID_QUIRK_NO_INIT_REPORTS },
147         { USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_HD, HID_QUIRK_NO_INIT_REPORTS },
148         { USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_QUAD_HD, HID_QUIRK_NO_INIT_REPORTS },
149         { USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_TP_V103, HID_QUIRK_NO_INIT_REPORTS },
150         { USB_VENDOR_ID_HOLTEK_ALT, USB_DEVICE_ID_HOLTEK_ALT_KEYBOARD_A096, HID_QUIRK_NO_INIT_INPUT_REPORTS },
151         { USB_VENDOR_ID_MULTIPLE_1781, USB_DEVICE_ID_RAPHNET_4NES4SNES_OLD, HID_QUIRK_MULTI_INPUT },
152         { USB_VENDOR_ID_DRACAL_RAPHNET, USB_DEVICE_ID_RAPHNET_2NES2SNES, HID_QUIRK_MULTI_INPUT },
153         { USB_VENDOR_ID_DRACAL_RAPHNET, USB_DEVICE_ID_RAPHNET_4NES4SNES, HID_QUIRK_MULTI_INPUT },
154
155         { 0, 0 }
156 };
157
158 /* Dynamic HID quirks list - specified at runtime */
159 struct quirks_list_struct {
160         struct hid_blacklist hid_bl_item;
161         struct list_head node;
162 };
163
164 static LIST_HEAD(dquirks_list);
165 static DECLARE_RWSEM(dquirks_rwsem);
166
167 /* Runtime ("dynamic") quirks manipulation functions */
168
169 /**
170  * usbhid_exists_dquirk: find any dynamic quirks for a USB HID device
171  * @idVendor: the 16-bit USB vendor ID, in native byteorder
172  * @idProduct: the 16-bit USB product ID, in native byteorder
173  *
174  * Description:
175  *         Scans dquirks_list for a matching dynamic quirk and returns
176  *         the pointer to the relevant struct hid_blacklist if found.
177  *         Must be called with a read lock held on dquirks_rwsem.
178  *
179  * Returns: NULL if no quirk found, struct hid_blacklist * if found.
180  */
181 static struct hid_blacklist *usbhid_exists_dquirk(const u16 idVendor,
182                 const u16 idProduct)
183 {
184         struct quirks_list_struct *q;
185         struct hid_blacklist *bl_entry = NULL;
186
187         list_for_each_entry(q, &dquirks_list, node) {
188                 if (q->hid_bl_item.idVendor == idVendor &&
189                                 q->hid_bl_item.idProduct == idProduct) {
190                         bl_entry = &q->hid_bl_item;
191                         break;
192                 }
193         }
194
195         if (bl_entry != NULL)
196                 dbg_hid("Found dynamic quirk 0x%x for USB HID vendor 0x%hx prod 0x%hx\n",
197                                 bl_entry->quirks, bl_entry->idVendor,
198                                 bl_entry->idProduct);
199
200         return bl_entry;
201 }
202
203
204 /**
205  * usbhid_modify_dquirk: add/replace a HID quirk
206  * @idVendor: the 16-bit USB vendor ID, in native byteorder
207  * @idProduct: the 16-bit USB product ID, in native byteorder
208  * @quirks: the u32 quirks value to add/replace
209  *
210  * Description:
211  *         If an dynamic quirk exists in memory for this (idVendor,
212  *         idProduct) pair, replace its quirks value with what was
213  *         provided.  Otherwise, add the quirk to the dynamic quirks list.
214  *
215  * Returns: 0 OK, -error on failure.
216  */
217 static int usbhid_modify_dquirk(const u16 idVendor, const u16 idProduct,
218                                 const u32 quirks)
219 {
220         struct quirks_list_struct *q_new, *q;
221         int list_edited = 0;
222
223         if (!idVendor) {
224                 dbg_hid("Cannot add a quirk with idVendor = 0\n");
225                 return -EINVAL;
226         }
227
228         q_new = kmalloc(sizeof(struct quirks_list_struct), GFP_KERNEL);
229         if (!q_new) {
230                 dbg_hid("Could not allocate quirks_list_struct\n");
231                 return -ENOMEM;
232         }
233
234         q_new->hid_bl_item.idVendor = idVendor;
235         q_new->hid_bl_item.idProduct = idProduct;
236         q_new->hid_bl_item.quirks = quirks;
237
238         down_write(&dquirks_rwsem);
239
240         list_for_each_entry(q, &dquirks_list, node) {
241
242                 if (q->hid_bl_item.idVendor == idVendor &&
243                                 q->hid_bl_item.idProduct == idProduct) {
244
245                         list_replace(&q->node, &q_new->node);
246                         kfree(q);
247                         list_edited = 1;
248                         break;
249
250                 }
251
252         }
253
254         if (!list_edited)
255                 list_add_tail(&q_new->node, &dquirks_list);
256
257         up_write(&dquirks_rwsem);
258
259         return 0;
260 }
261
262 /**
263  * usbhid_remove_all_dquirks: remove all runtime HID quirks from memory
264  *
265  * Description:
266  *         Free all memory associated with dynamic quirks - called before
267  *         module unload.
268  *
269  */
270 static void usbhid_remove_all_dquirks(void)
271 {
272         struct quirks_list_struct *q, *temp;
273
274         down_write(&dquirks_rwsem);
275         list_for_each_entry_safe(q, temp, &dquirks_list, node) {
276                 list_del(&q->node);
277                 kfree(q);
278         }
279         up_write(&dquirks_rwsem);
280
281 }
282
283 /** 
284  * usbhid_quirks_init: apply USB HID quirks specified at module load time
285  */
286 int usbhid_quirks_init(char **quirks_param)
287 {
288         u16 idVendor, idProduct;
289         u32 quirks;
290         int n = 0, m;
291
292         for (; n < MAX_USBHID_BOOT_QUIRKS && quirks_param[n]; n++) {
293
294                 m = sscanf(quirks_param[n], "0x%hx:0x%hx:0x%x",
295                                 &idVendor, &idProduct, &quirks);
296
297                 if (m != 3 ||
298                                 usbhid_modify_dquirk(idVendor, idProduct, quirks) != 0) {
299                         printk(KERN_WARNING
300                                         "Could not parse HID quirk module param %s\n",
301                                         quirks_param[n]);
302                 }
303         }
304
305         return 0;
306 }
307
308 /**
309  * usbhid_quirks_exit: release memory associated with dynamic_quirks
310  *
311  * Description:
312  *     Release all memory associated with dynamic quirks.  Called upon
313  *     module unload.
314  *
315  * Returns: nothing
316  */
317 void usbhid_quirks_exit(void)
318 {
319         usbhid_remove_all_dquirks();
320 }
321
322 /**
323  * usbhid_exists_squirk: return any static quirks for a USB HID device
324  * @idVendor: the 16-bit USB vendor ID, in native byteorder
325  * @idProduct: the 16-bit USB product ID, in native byteorder
326  *
327  * Description:
328  *     Given a USB vendor ID and product ID, return a pointer to
329  *     the hid_blacklist entry associated with that device.
330  *
331  * Returns: pointer if quirk found, or NULL if no quirks found.
332  */
333 static const struct hid_blacklist *usbhid_exists_squirk(const u16 idVendor,
334                 const u16 idProduct)
335 {
336         const struct hid_blacklist *bl_entry = NULL;
337         int n = 0;
338
339         for (; hid_blacklist[n].idVendor; n++)
340                 if (hid_blacklist[n].idVendor == idVendor &&
341                         (hid_blacklist[n].idProduct == (__u16) HID_ANY_ID ||
342                                 hid_blacklist[n].idProduct == idProduct))
343                         bl_entry = &hid_blacklist[n];
344
345         if (bl_entry != NULL)
346                 dbg_hid("Found squirk 0x%x for USB HID vendor 0x%hx prod 0x%hx\n",
347                                 bl_entry->quirks, bl_entry->idVendor, 
348                                 bl_entry->idProduct);
349         return bl_entry;
350 }
351
352 /**
353  * usbhid_lookup_quirk: return any quirks associated with a USB HID device
354  * @idVendor: the 16-bit USB vendor ID, in native byteorder
355  * @idProduct: the 16-bit USB product ID, in native byteorder
356  *
357  * Description:
358  *     Given a USB vendor ID and product ID, return any quirks associated
359  *     with that device.
360  *
361  * Returns: a u32 quirks value.
362  */
363 u32 usbhid_lookup_quirk(const u16 idVendor, const u16 idProduct)
364 {
365         u32 quirks = 0;
366         const struct hid_blacklist *bl_entry = NULL;
367
368         /* NCR devices must not be queried for reports */
369         if (idVendor == USB_VENDOR_ID_NCR &&
370                         idProduct >= USB_DEVICE_ID_NCR_FIRST &&
371                         idProduct <= USB_DEVICE_ID_NCR_LAST)
372                         return HID_QUIRK_NO_INIT_REPORTS;
373
374         down_read(&dquirks_rwsem);
375         bl_entry = usbhid_exists_dquirk(idVendor, idProduct);
376         if (!bl_entry)
377                 bl_entry = usbhid_exists_squirk(idVendor, idProduct);
378         if (bl_entry)
379                 quirks = bl_entry->quirks;
380         up_read(&dquirks_rwsem);
381
382         return quirks;
383 }
384
385 EXPORT_SYMBOL_GPL(usbhid_lookup_quirk);