1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * HID driver for some belkin "special" devices 4 * 5 * Copyright (c) 1999 Andreas Gal 6 * Copyright (c) 2000-2005 Vojtech Pavlik <vojtech@suse.cz> 7 * Copyright (c) 2005 Michael Haboustak <mike-@cinci.rr.com> for Concept2, Inc 8 * Copyright (c) 2006-2007 Jiri Kosina 9 * Copyright (c) 2008 Jiri Slaby 10 */ 11 12 /* 13 */ 14 15 #include <linux/device.h> 16 #include <linux/hid.h> 17 #include <linux/module.h> 18 19 #include "hid-ids.h" 20 21 #define BELKIN_HIDDEV 0x01 22 #define BELKIN_WKBD 0x02 23 24 #define belkin_map_key_clear(c) hid_map_usage_clear(hi, usage, bit, max, \ 25 EV_KEY, (c)) 26 static int belkin_input_mapping(struct hid_device *hdev, struct hid_input *hi, 27 struct hid_field *field, struct hid_usage *usage, 28 unsigned long **bit, int *max) 29 { 30 unsigned long quirks = (unsigned long)hid_get_drvdata(hdev); 31 32 if ((usage->hid & HID_USAGE_PAGE) != HID_UP_CONSUMER || 33 !(quirks & BELKIN_WKBD)) 34 return 0; 35 36 switch (usage->hid & HID_USAGE) { 37 case 0x03a: belkin_map_key_clear(KEY_SOUND); break; 38 case 0x03b: belkin_map_key_clear(KEY_CAMERA); break; 39 case 0x03c: belkin_map_key_clear(KEY_DOCUMENTS); break; 40 default: 41 return 0; 42 } 43 return 1; 44 } 45 46 static int belkin_probe(struct hid_device *hdev, const struct hid_device_id *id) 47 { 48 unsigned long quirks = id->driver_data; 49 int ret; 50 51 hid_set_drvdata(hdev, (void *)quirks); 52 53 ret = hid_parse(hdev); 54 if (ret) { 55 hid_err(hdev, "parse failed\n"); 56 goto err_free; 57 } 58 59 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT | 60 ((quirks & BELKIN_HIDDEV) ? HID_CONNECT_HIDDEV_FORCE : 0)); 61 if (ret) { 62 hid_err(hdev, "hw start failed\n"); 63 goto err_free; 64 } 65 66 return 0; 67 err_free: 68 return ret; 69 } 70 71 static const struct hid_device_id belkin_devices[] = { 72 { HID_USB_DEVICE(USB_VENDOR_ID_BELKIN, USB_DEVICE_ID_FLIP_KVM), 73 .driver_data = BELKIN_HIDDEV }, 74 { HID_USB_DEVICE(USB_VENDOR_ID_LABTEC, USB_DEVICE_ID_LABTEC_WIRELESS_KEYBOARD), 75 .driver_data = BELKIN_WKBD }, 76 { } 77 }; 78 MODULE_DEVICE_TABLE(hid, belkin_devices); 79 80 static struct hid_driver belkin_driver = { 81 .name = "belkin", 82 .id_table = belkin_devices, 83 .input_mapping = belkin_input_mapping, 84 .probe = belkin_probe, 85 }; 86 module_hid_driver(belkin_driver); 87 88 MODULE_LICENSE("GPL"); 89