// SPDX-License-Identifier: GPL-2.0-or-later /* * HID 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) 2007-2008 Oliver Neukum * Copyright (c) 2006-2012 Jiri Kosina * Copyright (c) 2012 Henrik Rydberg */ /* */ #include <linux/module.h> #include <linux/slab.h> #include <linux/kernel.h> #include <asm/unaligned.h> #include <asm/byteorder.h> #include <linux/hid.h> static struct hid_driver hid_generic; static int __check_hid_generic(struct device_driver *drv, void *data) { struct hid_driver *hdrv = to_hid_driver(drv); struct hid_device *hdev = data; if (hdrv == &hid_generic) return 0; return hid_match_device(hdev, hdrv) != NULL; } static bool hid_generic_match(struct hid_device *hdev, bool ignore_special_driver) { if (ignore_special_driver) return true; if (hdev->quirks & HID_QUIRK_HAVE_SPECIAL_DRIVER) return false; /* * If any other driver wants the device, leave the device to this other * driver. */ if (bus_for_each_drv(&hid_bus_type, NULL, hdev, __check_hid_generic)) return false; return true; } static int hid_generic_probe(struct hid_device *hdev, const struct hid_device_id *id) { int ret; hdev->quirks |= HID_QUIRK_INPUT_PER_APP; ret = hid_parse(hdev); if (ret) return ret; return hid_hw_start(hdev, HID_CONNECT_DEFAULT); } static const struct hid_device_id hid_table[] = { { HID_DEVICE(HID_BUS_ANY, HID_GROUP_ANY, HID_ANY_ID, HID_ANY_ID) }, { } }; MODULE_DEVICE_TABLE(hid, hid_table); static struct hid_driver hid_generic = { .name = "hid-generic", .id_table = hid_table, .match = hid_generic_match, .probe = hid_generic_probe, }; module_hid_driver(hid_generic); MODULE_AUTHOR("Henrik Rydberg"); MODULE_DESCRIPTION("HID generic driver"); MODULE_LICENSE("GPL");