/* * USB HID quirks support for Linux * * Copyright (c) 1999 Andreas Gal * Copyright (c) 2000-2005 Vojtech Pavlik * Copyright (c) 2005 Michael Haboustak for Concept2, Inc * Copyright (c) 2006-2007 Jiri Kosina * Copyright (c) 2007 Paul Walmsley */ /* * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the Free * Software Foundation; either version 2 of the License, or (at your option) * any later version. */ #include #include "../hid-ids.h" /* * Alphabetically sorted blacklist by quirk type. */ static const struct hid_blacklist { __u16 idVendor; __u16 idProduct; __u32 quirks; } hid_blacklist[] = { { USB_VENDOR_ID_AASHIMA, USB_DEVICE_ID_AASHIMA_GAMEPAD, HID_QUIRK_BADPAD }, { USB_VENDOR_ID_AASHIMA, USB_DEVICE_ID_AASHIMA_PREDATOR, HID_QUIRK_BADPAD }, { USB_VENDOR_ID_ALPS, USB_DEVICE_ID_IBM_GAMEPAD, HID_QUIRK_BADPAD }, { USB_VENDOR_ID_CHIC, USB_DEVICE_ID_CHIC_GAMEPAD, HID_QUIRK_BADPAD }, { USB_VENDOR_ID_HAPP, USB_DEVICE_ID_UGCI_DRIVING, HID_QUIRK_BADPAD | HID_QUIRK_MULTI_INPUT }, { USB_VENDOR_ID_HAPP, USB_DEVICE_ID_UGCI_FLYING, HID_QUIRK_BADPAD | HID_QUIRK_MULTI_INPUT }, { USB_VENDOR_ID_HAPP, USB_DEVICE_ID_UGCI_FIGHTING, HID_QUIRK_BADPAD | HID_QUIRK_MULTI_INPUT }, { USB_VENDOR_ID_NATSU, USB_DEVICE_ID_NATSU_GAMEPAD, HID_QUIRK_BADPAD }, { USB_VENDOR_ID_NEC, USB_DEVICE_ID_NEC_USB_GAME_PAD, HID_QUIRK_BADPAD }, { USB_VENDOR_ID_SAITEK, USB_DEVICE_ID_SAITEK_RUMBLEPAD, HID_QUIRK_BADPAD }, { USB_VENDOR_ID_TOPMAX, USB_DEVICE_ID_TOPMAX_COBRAPAD, HID_QUIRK_BADPAD }, { USB_VENDOR_ID_AFATECH, USB_DEVICE_ID_AFATECH_AF9016, HID_QUIRK_FULLSPEED_INTERVAL }, { USB_VENDOR_ID_PANTHERLORD, USB_DEVICE_ID_PANTHERLORD_TWIN_USB_JOYSTICK, HID_QUIRK_MULTI_INPUT | HID_QUIRK_SKIP_OUTPUT_REPORTS }, { USB_VENDOR_ID_PLAYDOTCOM, USB_DEVICE_ID_PLAYDOTCOM_EMS_USBII, HID_QUIRK_MULTI_INPUT }, { USB_VENDOR_ID_ATEN, USB_DEVICE_ID_ATEN_UC100KM, HID_QUIRK_NOGET }, { USB_VENDOR_ID_ATEN, USB_DEVICE_ID_ATEN_CS124U, HID_QUIRK_NOGET }, { USB_VENDOR_ID_ATEN, USB_DEVICE_ID_ATEN_2PORTKVM, HID_QUIRK_NOGET }, { USB_VENDOR_ID_ATEN, USB_DEVICE_ID_ATEN_4PORTKVM, HID_QUIRK_NOGET }, { USB_VENDOR_ID_ATEN, USB_DEVICE_ID_ATEN_4PORTKVMC, HID_QUIRK_NOGET }, { USB_VENDOR_ID_CH, USB_DEVICE_ID_CH_COMBATSTICK, HID_QUIRK_NOGET }, { USB_VENDOR_ID_CH, USB_DEVICE_ID_CH_FLIGHT_SIM_YOKE, HID_QUIRK_NOGET }, { USB_VENDOR_ID_CH, USB_DEVICE_ID_CH_PRO_PEDALS, HID_QUIRK_NOGET }, { USB_VENDOR_ID_DMI, USB_DEVICE_ID_DMI_ENC, HID_QUIRK_NOGET }, { USB_VENDOR_ID_ELO, USB_DEVICE_ID_ELO_TS2700, HID_QUIRK_NOGET }, { USB_VENDOR_ID_SUN, USB_DEVICE_ID_RARITAN_KVM_DONGLE, HID_QUIRK_NOGET }, { USB_VENDOR_ID_TURBOX, USB_DEVICE_ID_TURBOX_KEYBOARD, HID_QUIRK_NOGET }, { USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_PF1209, HID_QUIRK_MULTI_INPUT }, { USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_DUAL_USB_JOYPAD, HID_QUIRK_NOGET | HID_QUIRK_MULTI_INPUT | HID_QUIRK_SKIP_OUTPUT_REPORTS }, { USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_QUAD_USB_JOYPAD, HID_QUIRK_NOGET | HID_QUIRK_MULTI_INPUT }, { USB_VENDOR_ID_WISEGROUP_LTD, USB_DEVICE_ID_SMARTJOY_DUAL_PLUS, HID_QUIRK_NOGET | HID_QUIRK_MULTI_INPUT }, { USB_VENDOR_ID_WISEGROUP_LTD2, USB_DEVICE_ID_SMARTJOY_DUAL_PLUS, HID_QUIRK_NOGET | HID_QUIRK_MULTI_INPUT }, { 0, 0 } }; /* Dynamic HID quirks list - specified at runtime */ struct quirks_list_struct { struct hid_blacklist hid_bl_item; struct list_head node; }; static LIST_HEAD(dquirks_list); static DECLARE_RWSEM(dquirks_rwsem); /* Runtime ("dynamic") quirks manipulation functions */ /** * usbhid_exists_dquirk: find any dynamic quirks for a USB HID device * @idVendor: the 16-bit USB vendor ID, in native byteorder * @idProduct: the 16-bit USB product ID, in native byteorder * * Description: * Scans dquirks_list for a matching dynamic quirk and returns * the pointer to the relevant struct hid_blacklist if found. * Must be called with a read lock held on dquirks_rwsem. * * Returns: NULL if no quirk found, struct hid_blacklist * if found. */ static struct hid_blacklist *usbhid_exists_dquirk(const u16 idVendor, const u16 idProduct) { struct quirks_list_struct *q; struct hid_blacklist *bl_entry = NULL; list_for_each_entry(q, &dquirks_list, node) { if (q->hid_bl_item.idVendor == idVendor && q->hid_bl_item.idProduct == idProduct) { bl_entry = &q->hid_bl_item; break; } } if (bl_entry != NULL) dbg_hid("Found dynamic quirk 0x%x for USB HID vendor 0x%hx prod 0x%hx\n", bl_entry->quirks, bl_entry->idVendor, bl_entry->idProduct); return bl_entry; } /** * usbhid_modify_dquirk: add/replace a HID quirk * @idVendor: the 16-bit USB vendor ID, in native byteorder * @idProduct: the 16-bit USB product ID, in native byteorder * @quirks: the u32 quirks value to add/replace * * Description: * If an dynamic quirk exists in memory for this (idVendor, * idProduct) pair, replace its quirks value with what was * provided. Otherwise, add the quirk to the dynamic quirks list. * * Returns: 0 OK, -error on failure. */ static int usbhid_modify_dquirk(const u16 idVendor, const u16 idProduct, const u32 quirks) { struct quirks_list_struct *q_new, *q; int list_edited = 0; if (!idVendor) { dbg_hid("Cannot add a quirk with idVendor = 0\n"); return -EINVAL; } q_new = kmalloc(sizeof(struct quirks_list_struct), GFP_KERNEL); if (!q_new) { dbg_hid("Could not allocate quirks_list_struct\n"); return -ENOMEM; } q_new->hid_bl_item.idVendor = idVendor; q_new->hid_bl_item.idProduct = idProduct; q_new->hid_bl_item.quirks = quirks; down_write(&dquirks_rwsem); list_for_each_entry(q, &dquirks_list, node) { if (q->hid_bl_item.idVendor == idVendor && q->hid_bl_item.idProduct == idProduct) { list_replace(&q->node, &q_new->node); kfree(q); list_edited = 1; break; } } if (!list_edited) list_add_tail(&q_new->node, &dquirks_list); up_write(&dquirks_rwsem); return 0; } /** * usbhid_remove_all_dquirks: remove all runtime HID quirks from memory * * Description: * Free all memory associated with dynamic quirks - called before * module unload. * */ static void usbhid_remove_all_dquirks(void) { struct quirks_list_struct *q, *temp; down_write(&dquirks_rwsem); list_for_each_entry_safe(q, temp, &dquirks_list, node) { list_del(&q->node); kfree(q); } up_write(&dquirks_rwsem); } /** * usbhid_quirks_init: apply USB HID quirks specified at module load time */ int usbhid_quirks_init(char **quirks_param) { u16 idVendor, idProduct; u32 quirks; int n = 0, m; for (; n < MAX_USBHID_BOOT_QUIRKS && quirks_param[n]; n++) { m = sscanf(quirks_param[n], "0x%hx:0x%hx:0x%x", &idVendor, &idProduct, &quirks); if (m != 3 || usbhid_modify_dquirk(idVendor, idProduct, quirks) != 0) { printk(KERN_WARNING "Could not parse HID quirk module param %s\n", quirks_param[n]); } } return 0; } /** * usbhid_quirks_exit: release memory associated with dynamic_quirks * * Description: * Release all memory associated with dynamic quirks. Called upon * module unload. * * Returns: nothing */ void usbhid_quirks_exit(void) { usbhid_remove_all_dquirks(); } /** * usbhid_exists_squirk: return any static quirks for a USB HID device * @idVendor: the 16-bit USB vendor ID, in native byteorder * @idProduct: the 16-bit USB product ID, in native byteorder * * Description: * Given a USB vendor ID and product ID, return a pointer to * the hid_blacklist entry associated with that device. * * Returns: pointer if quirk found, or NULL if no quirks found. */ static const struct hid_blacklist *usbhid_exists_squirk(const u16 idVendor, const u16 idProduct) { const struct hid_blacklist *bl_entry = NULL; int n = 0; for (; hid_blacklist[n].idVendor; n++) if (hid_blacklist[n].idVendor == idVendor && hid_blacklist[n].idProduct == idProduct) bl_entry = &hid_blacklist[n]; if (bl_entry != NULL) dbg_hid("Found squirk 0x%x for USB HID vendor 0x%hx prod 0x%hx\n", bl_entry->quirks, bl_entry->idVendor, bl_entry->idProduct); return bl_entry; } /** * usbhid_lookup_quirk: return any quirks associated with a USB HID device * @idVendor: the 16-bit USB vendor ID, in native byteorder * @idProduct: the 16-bit USB product ID, in native byteorder * * Description: * Given a USB vendor ID and product ID, return any quirks associated * with that device. * * Returns: a u32 quirks value. */ u32 usbhid_lookup_quirk(const u16 idVendor, const u16 idProduct) { u32 quirks = 0; const struct hid_blacklist *bl_entry = NULL; /* NCR devices must not be queried for reports */ if (idVendor == USB_VENDOR_ID_NCR && idProduct >= USB_DEVICE_ID_NCR_FIRST && idProduct <= USB_DEVICE_ID_NCR_LAST) return HID_QUIRK_NO_INIT_REPORTS; down_read(&dquirks_rwsem); bl_entry = usbhid_exists_dquirk(idVendor, idProduct); if (!bl_entry) bl_entry = usbhid_exists_squirk(idVendor, idProduct); if (bl_entry) quirks = bl_entry->quirks; up_read(&dquirks_rwsem); return quirks; } EXPORT_SYMBOL_GPL(usbhid_lookup_quirk);