1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * HID driver for some sunplus "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 static __u8 *sp_report_fixup(struct hid_device *hdev, __u8 *rdesc, 22 unsigned int *rsize) 23 { 24 if (*rsize >= 112 && rdesc[104] == 0x26 && rdesc[105] == 0x80 && 25 rdesc[106] == 0x03) { 26 hid_info(hdev, "fixing up Sunplus Wireless Desktop report descriptor\n"); 27 rdesc[105] = rdesc[110] = 0x03; 28 rdesc[106] = rdesc[111] = 0x21; 29 } 30 return rdesc; 31 } 32 33 #define sp_map_key_clear(c) hid_map_usage_clear(hi, usage, bit, max, \ 34 EV_KEY, (c)) 35 static int sp_input_mapping(struct hid_device *hdev, struct hid_input *hi, 36 struct hid_field *field, struct hid_usage *usage, 37 unsigned long **bit, int *max) 38 { 39 if ((usage->hid & HID_USAGE_PAGE) != HID_UP_CONSUMER) 40 return 0; 41 42 switch (usage->hid & HID_USAGE) { 43 case 0x2003: sp_map_key_clear(KEY_ZOOMIN); break; 44 case 0x2103: sp_map_key_clear(KEY_ZOOMOUT); break; 45 default: 46 return 0; 47 } 48 return 1; 49 } 50 51 static const struct hid_device_id sp_devices[] = { 52 { HID_USB_DEVICE(USB_VENDOR_ID_SUNPLUS, USB_DEVICE_ID_SUNPLUS_WDESKTOP) }, 53 { } 54 }; 55 MODULE_DEVICE_TABLE(hid, sp_devices); 56 57 static struct hid_driver sp_driver = { 58 .name = "sunplus", 59 .id_table = sp_devices, 60 .report_fixup = sp_report_fixup, 61 .input_mapping = sp_input_mapping, 62 }; 63 module_hid_driver(sp_driver); 64 65 MODULE_DESCRIPTION("HID driver for some sunplus \"special\" devices"); 66 MODULE_LICENSE("GPL"); 67