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
20 #include "../hid-ids.h"
21
22 /*
23 * Alphabetically sorted blacklist by quirk type.
24 */
25
26 static const struct hid_blacklist {
27 __u16 idVendor;
28 __u16 idProduct;
29 __u32 quirks;
30 } hid_blacklist[] = {
31 { USB_VENDOR_ID_AASHIMA, USB_DEVICE_ID_AASHIMA_GAMEPAD, HID_QUIRK_BADPAD },
32 { USB_VENDOR_ID_AASHIMA, USB_DEVICE_ID_AASHIMA_PREDATOR, HID_QUIRK_BADPAD },
33 { USB_VENDOR_ID_ALPS, USB_DEVICE_ID_IBM_GAMEPAD, HID_QUIRK_BADPAD },
34 { USB_VENDOR_ID_CHIC, USB_DEVICE_ID_CHIC_GAMEPAD, HID_QUIRK_BADPAD },
35 { USB_VENDOR_ID_HAPP, USB_DEVICE_ID_UGCI_DRIVING, HID_QUIRK_BADPAD | HID_QUIRK_MULTI_INPUT },
36 { USB_VENDOR_ID_HAPP, USB_DEVICE_ID_UGCI_FLYING, HID_QUIRK_BADPAD | HID_QUIRK_MULTI_INPUT },
37 { USB_VENDOR_ID_HAPP, USB_DEVICE_ID_UGCI_FIGHTING, HID_QUIRK_BADPAD | HID_QUIRK_MULTI_INPUT },
38 { USB_VENDOR_ID_NATSU, USB_DEVICE_ID_NATSU_GAMEPAD, HID_QUIRK_BADPAD },
39 { USB_VENDOR_ID_NEC, USB_DEVICE_ID_NEC_USB_GAME_PAD, HID_QUIRK_BADPAD },
40 { USB_VENDOR_ID_SAITEK, USB_DEVICE_ID_SAITEK_RUMBLEPAD, HID_QUIRK_BADPAD },
41 { USB_VENDOR_ID_TOPMAX, USB_DEVICE_ID_TOPMAX_COBRAPAD, HID_QUIRK_BADPAD },
42
43 { USB_VENDOR_ID_AFATECH, USB_DEVICE_ID_AFATECH_AF9016, HID_QUIRK_FULLSPEED_INTERVAL },
44
45 { USB_VENDOR_ID_PANTHERLORD, USB_DEVICE_ID_PANTHERLORD_TWIN_USB_JOYSTICK, HID_QUIRK_MULTI_INPUT | HID_QUIRK_SKIP_OUTPUT_REPORTS },
46 { USB_VENDOR_ID_PLAYDOTCOM, USB_DEVICE_ID_PLAYDOTCOM_EMS_USBII, HID_QUIRK_MULTI_INPUT },
47
48 { USB_VENDOR_ID_ATEN, USB_DEVICE_ID_ATEN_UC100KM, HID_QUIRK_NOGET },
49 { USB_VENDOR_ID_ATEN, USB_DEVICE_ID_ATEN_CS124U, HID_QUIRK_NOGET },
50 { USB_VENDOR_ID_ATEN, USB_DEVICE_ID_ATEN_2PORTKVM, HID_QUIRK_NOGET },
51 { USB_VENDOR_ID_ATEN, USB_DEVICE_ID_ATEN_4PORTKVM, HID_QUIRK_NOGET },
52 { USB_VENDOR_ID_ATEN, USB_DEVICE_ID_ATEN_4PORTKVMC, HID_QUIRK_NOGET },
53 { USB_VENDOR_ID_CH, USB_DEVICE_ID_CH_COMBATSTICK, HID_QUIRK_NOGET },
54 { USB_VENDOR_ID_CH, USB_DEVICE_ID_CH_FLIGHT_SIM_YOKE, HID_QUIRK_NOGET },
55 { USB_VENDOR_ID_CH, USB_DEVICE_ID_CH_PRO_PEDALS, HID_QUIRK_NOGET },
56 { USB_VENDOR_ID_DMI, USB_DEVICE_ID_DMI_ENC, HID_QUIRK_NOGET },
57 { USB_VENDOR_ID_ELO, USB_DEVICE_ID_ELO_TS2700, HID_QUIRK_NOGET },
58 { USB_VENDOR_ID_SUN, USB_DEVICE_ID_RARITAN_KVM_DONGLE, HID_QUIRK_NOGET },
59 { USB_VENDOR_ID_TURBOX, USB_DEVICE_ID_TURBOX_KEYBOARD, HID_QUIRK_NOGET },
60 { USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_PF1209, HID_QUIRK_MULTI_INPUT },
61 { USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_DUAL_USB_JOYPAD, HID_QUIRK_NOGET | HID_QUIRK_MULTI_INPUT | HID_QUIRK_SKIP_OUTPUT_REPORTS },
62 { USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_QUAD_USB_JOYPAD, HID_QUIRK_NOGET | HID_QUIRK_MULTI_INPUT },
63
64 { USB_VENDOR_ID_WISEGROUP_LTD, USB_DEVICE_ID_SMARTJOY_DUAL_PLUS, HID_QUIRK_NOGET | HID_QUIRK_MULTI_INPUT },
65 { USB_VENDOR_ID_WISEGROUP_LTD2, USB_DEVICE_ID_SMARTJOY_DUAL_PLUS, HID_QUIRK_NOGET | HID_QUIRK_MULTI_INPUT },
66
67 { 0, 0 }
68 };
69
70 /* Dynamic HID quirks list - specified at runtime */
71 struct quirks_list_struct {
72 struct hid_blacklist hid_bl_item;
73 struct list_head node;
74 };
75
76 static LIST_HEAD(dquirks_list);
77 static DECLARE_RWSEM(dquirks_rwsem);
78
79 /* Runtime ("dynamic") quirks manipulation functions */
80
81 /**
82 * usbhid_exists_dquirk: find any dynamic quirks for a USB HID device
83 * @idVendor: the 16-bit USB vendor ID, in native byteorder
84 * @idProduct: the 16-bit USB product ID, in native byteorder
85 *
86 * Description:
87 * Scans dquirks_list for a matching dynamic quirk and returns
88 * the pointer to the relevant struct hid_blacklist if found.
89 * Must be called with a read lock held on dquirks_rwsem.
90 *
91 * Returns: NULL if no quirk found, struct hid_blacklist * if found.
92 */
93 static struct hid_blacklist *usbhid_exists_dquirk(const u16 idVendor,
94 const u16 idProduct)
95 {
96 struct quirks_list_struct *q;
97 struct hid_blacklist *bl_entry = NULL;
98
99 list_for_each_entry(q, &dquirks_list, node) {
100 if (q->hid_bl_item.idVendor == idVendor &&
101 q->hid_bl_item.idProduct == idProduct) {
102 bl_entry = &q->hid_bl_item;
103 break;
104 }
105 }
106
107 if (bl_entry != NULL)
108 dbg_hid("Found dynamic quirk 0x%x for USB HID vendor 0x%hx prod 0x%hx\n",
109 bl_entry->quirks, bl_entry->idVendor,
110 bl_entry->idProduct);
111
112 return bl_entry;
113 }
114
115
116 /**
117 * usbhid_modify_dquirk: add/replace a HID quirk
118 * @idVendor: the 16-bit USB vendor ID, in native byteorder
119 * @idProduct: the 16-bit USB product ID, in native byteorder
120 * @quirks: the u32 quirks value to add/replace
121 *
122 * Description:
123 * If an dynamic quirk exists in memory for this (idVendor,
124 * idProduct) pair, replace its quirks value with what was
125 * provided. Otherwise, add the quirk to the dynamic quirks list.
126 *
127 * Returns: 0 OK, -error on failure.
128 */
129 static int usbhid_modify_dquirk(const u16 idVendor, const u16 idProduct,
130 const u32 quirks)
131 {
132 struct quirks_list_struct *q_new, *q;
133 int list_edited = 0;
134
135 if (!idVendor) {
136 dbg_hid("Cannot add a quirk with idVendor = 0\n");
137 return -EINVAL;
138 }
139
140 q_new = kmalloc(sizeof(struct quirks_list_struct), GFP_KERNEL);
141 if (!q_new) {
142 dbg_hid("Could not allocate quirks_list_struct\n");
143 return -ENOMEM;
144 }
145
146 q_new->hid_bl_item.idVendor = idVendor;
147 q_new->hid_bl_item.idProduct = idProduct;
148 q_new->hid_bl_item.quirks = quirks;
149
150 down_write(&dquirks_rwsem);
151
152 list_for_each_entry(q, &dquirks_list, node) {
153
154 if (q->hid_bl_item.idVendor == idVendor &&
155 q->hid_bl_item.idProduct == idProduct) {
156
157 list_replace(&q->node, &q_new->node);
158 kfree(q);
159 list_edited = 1;
160 break;
161
162 }
163
164 }
165
166 if (!list_edited)
167 list_add_tail(&q_new->node, &dquirks_list);
168
169 up_write(&dquirks_rwsem);
170
171 return 0;
172 }
173
174 /**
175 * usbhid_remove_all_dquirks: remove all runtime HID quirks from memory
176 *
177 * Description:
178 * Free all memory associated with dynamic quirks - called before
179 * module unload.
180 *
181 */
182 static void usbhid_remove_all_dquirks(void)
183 {
184 struct quirks_list_struct *q, *temp;
185
186 down_write(&dquirks_rwsem);
187 list_for_each_entry_safe(q, temp, &dquirks_list, node) {
188 list_del(&q->node);
189 kfree(q);
190 }
191 up_write(&dquirks_rwsem);
192
193 }
194
195 /**
196 * usbhid_quirks_init: apply USB HID quirks specified at module load time
197 */
198 int usbhid_quirks_init(char **quirks_param)
199 {
200 u16 idVendor, idProduct;
201 u32 quirks;
202 int n = 0, m;
203
204 for (; quirks_param[n] && n < MAX_USBHID_BOOT_QUIRKS; n++) {
205
206 m = sscanf(quirks_param[n], "0x%hx:0x%hx:0x%x",
207 &idVendor, &idProduct, &quirks);
208
209 if (m != 3 ||
210 usbhid_modify_dquirk(idVendor, idProduct, quirks) != 0) {
211 printk(KERN_WARNING
212 "Could not parse HID quirk module param %s\n",
213 quirks_param[n]);
214 }
215 }
216
217 return 0;
218 }
219
220 /**
221 * usbhid_quirks_exit: release memory associated with dynamic_quirks
222 *
223 * Description:
224 * Release all memory associated with dynamic quirks. Called upon
225 * module unload.
226 *
227 * Returns: nothing
228 */
229 void usbhid_quirks_exit(void)
230 {
231 usbhid_remove_all_dquirks();
232 }
233
234 /**
235 * usbhid_exists_squirk: return any static quirks for a USB HID device
236 * @idVendor: the 16-bit USB vendor ID, in native byteorder
237 * @idProduct: the 16-bit USB product ID, in native byteorder
238 *
239 * Description:
240 * Given a USB vendor ID and product ID, return a pointer to
241 * the hid_blacklist entry associated with that device.
242 *
243 * Returns: pointer if quirk found, or NULL if no quirks found.
244 */
245 static const struct hid_blacklist *usbhid_exists_squirk(const u16 idVendor,
246 const u16 idProduct)
247 {
248 const struct hid_blacklist *bl_entry = NULL;
249 int n = 0;
250
251 for (; hid_blacklist[n].idVendor; n++)
252 if (hid_blacklist[n].idVendor == idVendor &&
253 hid_blacklist[n].idProduct == idProduct)
254 bl_entry = &hid_blacklist[n];
255
256 if (bl_entry != NULL)
257 dbg_hid("Found squirk 0x%x for USB HID vendor 0x%hx prod 0x%hx\n",
258 bl_entry->quirks, bl_entry->idVendor,
259 bl_entry->idProduct);
260 return bl_entry;
261 }
262
263 /**
264 * usbhid_lookup_quirk: return any quirks associated with a USB HID device
265 * @idVendor: the 16-bit USB vendor ID, in native byteorder
266 * @idProduct: the 16-bit USB product ID, in native byteorder
267 *
268 * Description:
269 * Given a USB vendor ID and product ID, return any quirks associated
270 * with that device.
271 *
272 * Returns: a u32 quirks value.
273 */
274 u32 usbhid_lookup_quirk(const u16 idVendor, const u16 idProduct)
275 {
276 u32 quirks = 0;
277 const struct hid_blacklist *bl_entry = NULL;
278
279 /* NCR devices must not be queried for reports */
280 if (idVendor == USB_VENDOR_ID_NCR &&
281 idProduct >= USB_DEVICE_ID_NCR_FIRST &&
282 idProduct <= USB_DEVICE_ID_NCR_LAST)
283 return HID_QUIRK_NOGET;
284
285 down_read(&dquirks_rwsem);
286 bl_entry = usbhid_exists_dquirk(idVendor, idProduct);
287 if (!bl_entry)
288 bl_entry = usbhid_exists_squirk(idVendor, idProduct);
289 if (bl_entry)
290 quirks = bl_entry->quirks;
291 up_read(&dquirks_rwsem);
292
293 return quirks;
294 }
295
296 EXPORT_SYMBOL_GPL(usbhid_lookup_quirk);
297
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