2 * USB HID quirks support for Linux
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
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)
18 #include <linux/hid.h>
20 #include "../hid-ids.h"
23 * Alphabetically sorted blacklist by quirk type.
26 static const struct 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 },
43 { USB_VENDOR_ID_AFATECH, USB_DEVICE_ID_AFATECH_AF9016, HID_QUIRK_FULLSPEED_INTERVAL },
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 },
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_DMI, USB_DEVICE_ID_DMI_ENC, HID_QUIRK_NOGET },
54 { USB_VENDOR_ID_ELO, USB_DEVICE_ID_ELO_TS2700, HID_QUIRK_NOGET },
55 { USB_VENDOR_ID_SUN, USB_DEVICE_ID_RARITAN_KVM_DONGLE, HID_QUIRK_NOGET },
56 { USB_VENDOR_ID_TURBOX, USB_DEVICE_ID_TURBOX_KEYBOARD, HID_QUIRK_NOGET },
57 { USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_DUAL_USB_JOYPAD, HID_QUIRK_NOGET | HID_QUIRK_MULTI_INPUT | HID_QUIRK_SKIP_OUTPUT_REPORTS },
58 { USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_QUAD_USB_JOYPAD, HID_QUIRK_NOGET | HID_QUIRK_MULTI_INPUT },
60 { USB_VENDOR_ID_WISEGROUP_LTD, USB_DEVICE_ID_SMARTJOY_DUAL_PLUS, HID_QUIRK_NOGET | HID_QUIRK_MULTI_INPUT },
61 { USB_VENDOR_ID_WISEGROUP_LTD2, USB_DEVICE_ID_SMARTJOY_DUAL_PLUS, HID_QUIRK_NOGET | HID_QUIRK_MULTI_INPUT },
66 /* Dynamic HID quirks list - specified at runtime */
67 struct quirks_list_struct {
68 struct hid_blacklist hid_bl_item;
69 struct list_head node;
72 static LIST_HEAD(dquirks_list);
73 static DECLARE_RWSEM(dquirks_rwsem);
75 /* Runtime ("dynamic") quirks manipulation functions */
78 * usbhid_exists_dquirk: find any dynamic quirks for a USB HID device
79 * @idVendor: the 16-bit USB vendor ID, in native byteorder
80 * @idProduct: the 16-bit USB product ID, in native byteorder
83 * Scans dquirks_list for a matching dynamic quirk and returns
84 * the pointer to the relevant struct hid_blacklist if found.
85 * Must be called with a read lock held on dquirks_rwsem.
87 * Returns: NULL if no quirk found, struct hid_blacklist * if found.
89 static struct hid_blacklist *usbhid_exists_dquirk(const u16 idVendor,
92 struct quirks_list_struct *q;
93 struct hid_blacklist *bl_entry = NULL;
95 list_for_each_entry(q, &dquirks_list, node) {
96 if (q->hid_bl_item.idVendor == idVendor &&
97 q->hid_bl_item.idProduct == idProduct) {
98 bl_entry = &q->hid_bl_item;
103 if (bl_entry != NULL)
104 dbg_hid("Found dynamic quirk 0x%x for USB HID vendor 0x%hx prod 0x%hx\n",
105 bl_entry->quirks, bl_entry->idVendor,
106 bl_entry->idProduct);
113 * usbhid_modify_dquirk: add/replace a HID quirk
114 * @idVendor: the 16-bit USB vendor ID, in native byteorder
115 * @idProduct: the 16-bit USB product ID, in native byteorder
116 * @quirks: the u32 quirks value to add/replace
119 * If an dynamic quirk exists in memory for this (idVendor,
120 * idProduct) pair, replace its quirks value with what was
121 * provided. Otherwise, add the quirk to the dynamic quirks list.
123 * Returns: 0 OK, -error on failure.
125 static int usbhid_modify_dquirk(const u16 idVendor, const u16 idProduct,
128 struct quirks_list_struct *q_new, *q;
132 dbg_hid("Cannot add a quirk with idVendor = 0\n");
136 q_new = kmalloc(sizeof(struct quirks_list_struct), GFP_KERNEL);
138 dbg_hid("Could not allocate quirks_list_struct\n");
142 q_new->hid_bl_item.idVendor = idVendor;
143 q_new->hid_bl_item.idProduct = idProduct;
144 q_new->hid_bl_item.quirks = quirks;
146 down_write(&dquirks_rwsem);
148 list_for_each_entry(q, &dquirks_list, node) {
150 if (q->hid_bl_item.idVendor == idVendor &&
151 q->hid_bl_item.idProduct == idProduct) {
153 list_replace(&q->node, &q_new->node);
163 list_add_tail(&q_new->node, &dquirks_list);
165 up_write(&dquirks_rwsem);
171 * usbhid_remove_all_dquirks: remove all runtime HID quirks from memory
174 * Free all memory associated with dynamic quirks - called before
178 static void usbhid_remove_all_dquirks(void)
180 struct quirks_list_struct *q, *temp;
182 down_write(&dquirks_rwsem);
183 list_for_each_entry_safe(q, temp, &dquirks_list, node) {
187 up_write(&dquirks_rwsem);
192 * usbhid_quirks_init: apply USB HID quirks specified at module load time
194 int usbhid_quirks_init(char **quirks_param)
196 u16 idVendor, idProduct;
200 for (; quirks_param[n] && n < MAX_USBHID_BOOT_QUIRKS; n++) {
202 m = sscanf(quirks_param[n], "0x%hx:0x%hx:0x%x",
203 &idVendor, &idProduct, &quirks);
206 usbhid_modify_dquirk(idVendor, idProduct, quirks) != 0) {
208 "Could not parse HID quirk module param %s\n",
217 * usbhid_quirks_exit: release memory associated with dynamic_quirks
220 * Release all memory associated with dynamic quirks. Called upon
225 void usbhid_quirks_exit(void)
227 usbhid_remove_all_dquirks();
231 * usbhid_exists_squirk: return any static quirks for a USB HID device
232 * @idVendor: the 16-bit USB vendor ID, in native byteorder
233 * @idProduct: the 16-bit USB product ID, in native byteorder
236 * Given a USB vendor ID and product ID, return a pointer to
237 * the hid_blacklist entry associated with that device.
239 * Returns: pointer if quirk found, or NULL if no quirks found.
241 static const struct hid_blacklist *usbhid_exists_squirk(const u16 idVendor,
244 const struct hid_blacklist *bl_entry = NULL;
247 for (; hid_blacklist[n].idVendor; n++)
248 if (hid_blacklist[n].idVendor == idVendor &&
249 hid_blacklist[n].idProduct == idProduct)
250 bl_entry = &hid_blacklist[n];
252 if (bl_entry != NULL)
253 dbg_hid("Found squirk 0x%x for USB HID vendor 0x%hx prod 0x%hx\n",
254 bl_entry->quirks, bl_entry->idVendor,
255 bl_entry->idProduct);
260 * usbhid_lookup_quirk: return any quirks associated with a USB HID device
261 * @idVendor: the 16-bit USB vendor ID, in native byteorder
262 * @idProduct: the 16-bit USB product ID, in native byteorder
265 * Given a USB vendor ID and product ID, return any quirks associated
268 * Returns: a u32 quirks value.
270 u32 usbhid_lookup_quirk(const u16 idVendor, const u16 idProduct)
273 const struct hid_blacklist *bl_entry = NULL;
275 /* NCR devices must not be queried for reports */
276 if (idVendor == USB_VENDOR_ID_NCR &&
277 idProduct >= USB_DEVICE_ID_NCR_FIRST &&
278 idProduct <= USB_DEVICE_ID_NCR_LAST)
279 return HID_QUIRK_NOGET;
281 down_read(&dquirks_rwsem);
282 bl_entry = usbhid_exists_dquirk(idVendor, idProduct);
284 bl_entry = usbhid_exists_squirk(idVendor, idProduct);
286 quirks = bl_entry->quirks;
287 up_read(&dquirks_rwsem);
292 EXPORT_SYMBOL_GPL(usbhid_lookup_quirk);