| /* |
| * USB HID quirks support for Linux |
| * |
| * Copyright (c) 1999 Andreas Gal |
| * Copyright (c) 2000-2005 Vojtech Pavlik <vojtech@suse.cz> |
| * Copyright (c) 2005 Michael Haboustak <mike-@cinci.rr.com> 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 <linux/hid.h> |
| #include <linux/export.h> |
| #include <linux/slab.h> |
| |
| #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_DWAV, USB_DEVICE_ID_EGALAX_TOUCHCONTROLLER, HID_QUIRK_MULTI_INPUT | HID_QUIRK_NOGET }, |
| { USB_VENDOR_ID_MOJO, USB_DEVICE_ID_RETRO_ADAPTER, HID_QUIRK_MULTI_INPUT }, |
| { 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_NEXTWINDOW, USB_DEVICE_ID_NEXTWINDOW_TOUCHSCREEN, HID_QUIRK_MULTI_INPUT}, |
| { 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_EMS, USB_DEVICE_ID_EMS_TRIO_LINKER_PLUS_II, HID_QUIRK_MULTI_INPUT }, |
| { USB_VENDOR_ID_ETURBOTOUCH, USB_DEVICE_ID_ETURBOTOUCH, HID_QUIRK_MULTI_INPUT }, |
| { USB_VENDOR_ID_ETURBOTOUCH, USB_DEVICE_ID_ETURBOTOUCH_2968, HID_QUIRK_MULTI_INPUT }, |
| { USB_VENDOR_ID_GREENASIA, USB_DEVICE_ID_GREENASIA_DUAL_USB_JOYPAD, HID_QUIRK_MULTI_INPUT }, |
| { USB_VENDOR_ID_PANTHERLORD, USB_DEVICE_ID_PANTHERLORD_TWIN_USB_JOYSTICK, HID_QUIRK_MULTI_INPUT | HID_QUIRK_SKIP_OUTPUT_REPORTS }, |
| { USB_VENDOR_ID_TOUCHPACK, USB_DEVICE_ID_TOUCHPACK_RTS, HID_QUIRK_MULTI_INPUT }, |
| |
| { USB_VENDOR_ID_AIREN, USB_DEVICE_ID_AIREN_SLIMPLUS, HID_QUIRK_NOGET }, |
| { 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_ATEN, USB_DEVICE_ID_ATEN_CS682, HID_QUIRK_NOGET }, |
| { USB_VENDOR_ID_CH, USB_DEVICE_ID_CH_FIGHTERSTICK, 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_ECLIPSE_YOKE, 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_THROTTLE, HID_QUIRK_NOGET }, |
| { USB_VENDOR_ID_CH, USB_DEVICE_ID_CH_PRO_PEDALS, HID_QUIRK_NOGET }, |
| { USB_VENDOR_ID_CH, USB_DEVICE_ID_CH_3AXIS_5BUTTON_STICK, HID_QUIRK_NOGET }, |
| { USB_VENDOR_ID_CH, USB_DEVICE_ID_CH_AXIS_295, HID_QUIRK_NOGET }, |
| { USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_PIXART_USB_OPTICAL_MOUSE, HID_QUIRK_ALWAYS_POLL }, |
| { USB_VENDOR_ID_DMI, USB_DEVICE_ID_DMI_ENC, HID_QUIRK_NOGET }, |
| { USB_VENDOR_ID_ELAN, USB_DEVICE_ID_ELAN_TOUCHSCREEN, HID_QUIRK_ALWAYS_POLL }, |
| { USB_VENDOR_ID_ELAN, USB_DEVICE_ID_ELAN_TOUCHSCREEN_009B, HID_QUIRK_ALWAYS_POLL }, |
| { USB_VENDOR_ID_ELAN, USB_DEVICE_ID_ELAN_TOUCHSCREEN_0103, HID_QUIRK_ALWAYS_POLL }, |
| { USB_VENDOR_ID_ELAN, USB_DEVICE_ID_ELAN_TOUCHSCREEN_010c, HID_QUIRK_ALWAYS_POLL }, |
| { USB_VENDOR_ID_ELAN, USB_DEVICE_ID_ELAN_TOUCHSCREEN_016F, HID_QUIRK_ALWAYS_POLL }, |
| { USB_VENDOR_ID_ELO, USB_DEVICE_ID_ELO_TS2700, HID_QUIRK_NOGET }, |
| { USB_VENDOR_ID_FORMOSA, USB_DEVICE_ID_FORMOSA_IR_RECEIVER, HID_QUIRK_NO_INIT_REPORTS }, |
| { USB_VENDOR_ID_FREESCALE, USB_DEVICE_ID_FREESCALE_MX28, HID_QUIRK_NOGET }, |
| { USB_VENDOR_ID_HP, USB_PRODUCT_ID_HP_LOGITECH_OEM_USB_OPTICAL_MOUSE_0A4A, HID_QUIRK_ALWAYS_POLL }, |
| { USB_VENDOR_ID_HP, USB_PRODUCT_ID_HP_LOGITECH_OEM_USB_OPTICAL_MOUSE_0B4A, HID_QUIRK_ALWAYS_POLL }, |
| { USB_VENDOR_ID_HP, USB_PRODUCT_ID_HP_PIXART_OEM_USB_OPTICAL_MOUSE, HID_QUIRK_ALWAYS_POLL }, |
| { USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_C077, HID_QUIRK_ALWAYS_POLL }, |
| { USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_MOUSE_C01A, HID_QUIRK_ALWAYS_POLL }, |
| { USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_MOUSE_C05A, HID_QUIRK_ALWAYS_POLL }, |
| { USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_MOUSE_C06A, HID_QUIRK_ALWAYS_POLL }, |
| { USB_VENDOR_ID_MGE, USB_DEVICE_ID_MGE_UPS, HID_QUIRK_NOGET }, |
| { USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_SURFACE_PRO_2, HID_QUIRK_NO_INIT_REPORTS }, |
| { USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_TYPE_COVER_2, HID_QUIRK_NO_INIT_REPORTS }, |
| { USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_TOUCH_COVER_2, HID_QUIRK_NO_INIT_REPORTS }, |
| { USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_TYPE_COVER_PRO_3, HID_QUIRK_NO_INIT_REPORTS }, |
| { USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_TYPE_COVER_PRO_3_2, HID_QUIRK_NO_INIT_REPORTS }, |
| { USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_TYPE_COVER_PRO_3_JP, HID_QUIRK_NO_INIT_REPORTS }, |
| { USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_TYPE_COVER_3, HID_QUIRK_NO_INIT_REPORTS }, |
| { USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_POWER_COVER, HID_QUIRK_NO_INIT_REPORTS }, |
| { USB_VENDOR_ID_MSI, USB_DEVICE_ID_MSI_GT683R_LED_PANEL, HID_QUIRK_NO_INIT_REPORTS }, |
| { USB_VENDOR_ID_NEXIO, USB_DEVICE_ID_NEXIO_MULTITOUCH_PTI0750, HID_QUIRK_NO_INIT_REPORTS }, |
| { USB_VENDOR_ID_NOVATEK, USB_DEVICE_ID_NOVATEK_MOUSE, HID_QUIRK_NO_INIT_REPORTS }, |
| { USB_VENDOR_ID_PENMOUNT, USB_DEVICE_ID_PENMOUNT_1610, HID_QUIRK_NOGET }, |
| { USB_VENDOR_ID_PENMOUNT, USB_DEVICE_ID_PENMOUNT_1640, HID_QUIRK_NOGET }, |
| { USB_VENDOR_ID_PIXART, USB_DEVICE_ID_PIXART_USB_OPTICAL_MOUSE, HID_QUIRK_ALWAYS_POLL }, |
| { USB_VENDOR_ID_KYE, USB_DEVICE_ID_PIXART_USB_OPTICAL_MOUSE_ID2, HID_QUIRK_ALWAYS_POLL }, |
| { USB_VENDOR_ID_PIXART, USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN, HID_QUIRK_NO_INIT_REPORTS }, |
| { USB_VENDOR_ID_PIXART, USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN1, HID_QUIRK_NO_INIT_REPORTS }, |
| { USB_VENDOR_ID_PIXART, USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN2, HID_QUIRK_NO_INIT_REPORTS }, |
| { USB_VENDOR_ID_PRIMAX, USB_DEVICE_ID_PRIMAX_MOUSE_4D22, HID_QUIRK_ALWAYS_POLL }, |
| { USB_VENDOR_ID_PRODIGE, USB_DEVICE_ID_PRODIGE_CORDLESS, HID_QUIRK_NOGET }, |
| { USB_VENDOR_ID_QUANTA, USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH_3001, HID_QUIRK_NOGET }, |
| { USB_VENDOR_ID_QUANTA, USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH_3008, HID_QUIRK_NOGET }, |
| { USB_VENDOR_ID_REALTEK, USB_DEVICE_ID_REALTEK_READER, HID_QUIRK_NO_INIT_REPORTS }, |
| { USB_VENDOR_ID_SENNHEISER, USB_DEVICE_ID_SENNHEISER_BTD500USB, HID_QUIRK_NOGET }, |
| { USB_VENDOR_ID_SIGMATEL, USB_DEVICE_ID_SIGMATEL_STMP3780, HID_QUIRK_NOGET }, |
| { USB_VENDOR_ID_SIS_TOUCH, USB_DEVICE_ID_SIS9200_TOUCH, HID_QUIRK_NOGET }, |
| { USB_VENDOR_ID_SIS_TOUCH, USB_DEVICE_ID_SIS817_TOUCH, HID_QUIRK_NOGET }, |
| { USB_VENDOR_ID_SIS_TOUCH, USB_DEVICE_ID_SIS_TS, HID_QUIRK_NO_INIT_REPORTS }, |
| { USB_VENDOR_ID_SIS_TOUCH, USB_DEVICE_ID_SIS1030_TOUCH, HID_QUIRK_NOGET }, |
| { USB_VENDOR_ID_SUN, USB_DEVICE_ID_RARITAN_KVM_DONGLE, HID_QUIRK_NOGET }, |
| { USB_VENDOR_ID_SYMBOL, USB_DEVICE_ID_SYMBOL_SCANNER_1, HID_QUIRK_NOGET }, |
| { USB_VENDOR_ID_SYMBOL, USB_DEVICE_ID_SYMBOL_SCANNER_2, HID_QUIRK_NOGET }, |
| { USB_VENDOR_ID_TPV, USB_DEVICE_ID_TPV_OPTICAL_TOUCHSCREEN_8882, HID_QUIRK_NOGET }, |
| { USB_VENDOR_ID_TPV, USB_DEVICE_ID_TPV_OPTICAL_TOUCHSCREEN_8883, HID_QUIRK_NOGET }, |
| { USB_VENDOR_ID_TURBOX, USB_DEVICE_ID_TURBOX_KEYBOARD, HID_QUIRK_NOGET }, |
| { USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_KNA5, HID_QUIRK_MULTI_INPUT }, |
| { USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_TWA60, HID_QUIRK_MULTI_INPUT }, |
| { USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_MEDIA_TABLET_10_6_INCH, HID_QUIRK_MULTI_INPUT }, |
| { USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_MEDIA_TABLET_14_1_INCH, HID_QUIRK_MULTI_INPUT }, |
| { USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_SIRIUS_BATTERY_FREE_TABLET, HID_QUIRK_MULTI_INPUT }, |
| { USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_QUAD_USB_JOYPAD, 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 }, |
| |
| { USB_VENDOR_ID_PI_ENGINEERING, USB_DEVICE_ID_PI_ENGINEERING_VEC_USB_FOOTPEDAL, HID_QUIRK_HIDINPUT_FORCE }, |
| |
| { USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_MULTI_TOUCH, HID_QUIRK_MULTI_INPUT }, |
| { USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_WIRELESS, HID_QUIRK_MULTI_INPUT }, |
| { USB_VENDOR_ID_SIGMA_MICRO, USB_DEVICE_ID_SIGMA_MICRO_KEYBOARD, HID_QUIRK_NO_INIT_REPORTS }, |
| { USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_MOUSEPEN_I608X, HID_QUIRK_MULTI_INPUT }, |
| { USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_MOUSEPEN_I608X_2, HID_QUIRK_MULTI_INPUT }, |
| { USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_EASYPEN_M610X, HID_QUIRK_MULTI_INPUT }, |
| { USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_PENSKETCH_M912, HID_QUIRK_MULTI_INPUT }, |
| { USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_DUOSENSE, HID_QUIRK_NO_INIT_REPORTS }, |
| { USB_VENDOR_ID_SEMICO, USB_DEVICE_ID_SEMICO_USB_KEYKOARD, HID_QUIRK_NO_INIT_REPORTS }, |
| { USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_LTS1, HID_QUIRK_NO_INIT_REPORTS }, |
| { USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_LTS2, HID_QUIRK_NO_INIT_REPORTS }, |
| { USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_HD, HID_QUIRK_NO_INIT_REPORTS }, |
| { USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_QUAD_HD, HID_QUIRK_NO_INIT_REPORTS }, |
| { USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_TP_V103, HID_QUIRK_NO_INIT_REPORTS }, |
| { USB_VENDOR_ID_HOLTEK_ALT, USB_DEVICE_ID_HOLTEK_ALT_KEYBOARD_A096, HID_QUIRK_NO_INIT_INPUT_REPORTS }, |
| { USB_VENDOR_ID_MULTIPLE_1781, USB_DEVICE_ID_RAPHNET_4NES4SNES_OLD, HID_QUIRK_MULTI_INPUT }, |
| { USB_VENDOR_ID_DRACAL_RAPHNET, USB_DEVICE_ID_RAPHNET_2NES2SNES, HID_QUIRK_MULTI_INPUT }, |
| { USB_VENDOR_ID_DRACAL_RAPHNET, USB_DEVICE_ID_RAPHNET_4NES4SNES, 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); |