1/* 2 * HID driver for some samsung "special" devices 3 * 4 * Copyright (c) 1999 Andreas Gal 5 * Copyright (c) 2000-2005 Vojtech Pavlik <vojtech@suse.cz> 6 * Copyright (c) 2005 Michael Haboustak <mike-@cinci.rr.com> for Concept2, Inc 7 * Copyright (c) 2006-2007 Jiri Kosina 8 * Copyright (c) 2007 Paul Walmsley 9 * Copyright (c) 2008 Jiri Slaby 10 * Copyright (c) 2010 Don Prince <dhprince.devel@yahoo.co.uk> 11 * 12 * 13 * This driver supports several HID devices: 14 * 15 * [0419:0001] Samsung IrDA remote controller (reports as Cypress USB Mouse). 16 * various hid report fixups for different variants. 17 * 18 * [0419:0600] Creative Desktop Wireless 6000 keyboard/mouse combo 19 * several key mappings used from the consumer usage page 20 * deviate from the USB HUT 1.12 standard. 21 * 22 */ 23 24/* 25 * This program is free software; you can redistribute it and/or modify it 26 * under the terms of the GNU General Public License as published by the Free 27 * Software Foundation; either version 2 of the License, or (at your option) 28 * any later version. 29 */ 30 31#include <linux/device.h> 32#include <linux/usb.h> 33#include <linux/hid.h> 34#include <linux/module.h> 35 36#include "hid-ids.h" 37 38static inline void samsung_irda_dev_trace(struct hid_device *hdev, 39 unsigned int rsize) 40{ 41 dev_info(&hdev->dev, "fixing up Samsung IrDA %d byte report " 42 "descriptor\n", rsize); 43} 44 45static void samsung_irda_report_fixup(struct hid_device *hdev, __u8 *rdesc, 46 unsigned int rsize) 47{ 48 if (rsize == 184 && rdesc[175] == 0x25 && rdesc[176] == 0x40 && 49 rdesc[177] == 0x75 && rdesc[178] == 0x30 && 50 rdesc[179] == 0x95 && rdesc[180] == 0x01 && 51 rdesc[182] == 0x40) { 52 samsung_irda_dev_trace(hdev, 184); 53 rdesc[176] = 0xff; 54 rdesc[178] = 0x08; 55 rdesc[180] = 0x06; 56 rdesc[182] = 0x42; 57 } else 58 if (rsize == 203 && rdesc[192] == 0x15 && rdesc[193] == 0x0 && 59 rdesc[194] == 0x25 && rdesc[195] == 0x12) { 60 samsung_irda_dev_trace(hdev, 203); 61 rdesc[193] = 0x1; 62 rdesc[195] = 0xf; 63 } else 64 if (rsize == 135 && rdesc[124] == 0x15 && rdesc[125] == 0x0 && 65 rdesc[126] == 0x25 && rdesc[127] == 0x11) { 66 samsung_irda_dev_trace(hdev, 135); 67 rdesc[125] = 0x1; 68 rdesc[127] = 0xe; 69 } else 70 if (rsize == 171 && rdesc[160] == 0x15 && rdesc[161] == 0x0 && 71 rdesc[162] == 0x25 && rdesc[163] == 0x01) { 72 samsung_irda_dev_trace(hdev, 171); 73 rdesc[161] = 0x1; 74 rdesc[163] = 0x3; 75 } 76} 77 78#define samsung_kbd_mouse_map_key_clear(c) \ 79 hid_map_usage_clear(hi, usage, bit, max, EV_KEY, (c)) 80 81static int samsung_kbd_mouse_input_mapping(struct hid_device *hdev, 82 struct hid_input *hi, struct hid_field *field, struct hid_usage *usage, 83 unsigned long **bit, int *max) 84{ 85 struct usb_interface *intf = to_usb_interface(hdev->dev.parent); 86 unsigned short ifnum = intf->cur_altsetting->desc.bInterfaceNumber; 87 88 if (1 != ifnum || HID_UP_CONSUMER != (usage->hid & HID_USAGE_PAGE)) 89 return 0; 90 91 dbg_hid("samsung wireless keyboard/mouse input mapping event [0x%x]\n", 92 usage->hid & HID_USAGE); 93 94 switch (usage->hid & HID_USAGE) { 95 /* report 2 */ 96 case 0x183: samsung_kbd_mouse_map_key_clear(KEY_MEDIA); break; 97 case 0x195: samsung_kbd_mouse_map_key_clear(KEY_EMAIL); break; 98 case 0x196: samsung_kbd_mouse_map_key_clear(KEY_CALC); break; 99 case 0x197: samsung_kbd_mouse_map_key_clear(KEY_COMPUTER); break; 100 case 0x22b: samsung_kbd_mouse_map_key_clear(KEY_SEARCH); break; 101 case 0x22c: samsung_kbd_mouse_map_key_clear(KEY_WWW); break; 102 case 0x22d: samsung_kbd_mouse_map_key_clear(KEY_BACK); break; 103 case 0x22e: samsung_kbd_mouse_map_key_clear(KEY_FORWARD); break; 104 case 0x22f: samsung_kbd_mouse_map_key_clear(KEY_FAVORITES); break; 105 case 0x230: samsung_kbd_mouse_map_key_clear(KEY_REFRESH); break; 106 case 0x231: samsung_kbd_mouse_map_key_clear(KEY_STOP); break; 107 default: 108 return 0; 109 } 110 111 return 1; 112} 113 114static void samsung_report_fixup(struct hid_device *hdev, __u8 *rdesc, 115 unsigned int rsize) 116{ 117 if (USB_DEVICE_ID_SAMSUNG_IR_REMOTE == hdev->product) 118 samsung_irda_report_fixup(hdev, rdesc, rsize); 119} 120 121static int samsung_input_mapping(struct hid_device *hdev, struct hid_input *hi, 122 struct hid_field *field, struct hid_usage *usage, 123 unsigned long **bit, int *max) 124{ 125 int ret = 0; 126 127 if (USB_DEVICE_ID_SAMSUNG_WIRELESS_KBD_MOUSE == hdev->product) 128 ret = samsung_kbd_mouse_input_mapping(hdev, 129 hi, field, usage, bit, max); 130 131 return ret; 132} 133 134static int samsung_probe(struct hid_device *hdev, 135 const struct hid_device_id *id) 136{ 137 int ret; 138 unsigned int cmask = HID_CONNECT_DEFAULT; 139 140 ret = hid_parse(hdev); 141 if (ret) { 142 dev_err(&hdev->dev, "parse failed\n"); 143 goto err_free; 144 } 145 146 if (USB_DEVICE_ID_SAMSUNG_IR_REMOTE == hdev->product) { 147 if (hdev->rsize == 184) { 148 /* disable hidinput, force hiddev */ 149 cmask = (cmask & ~HID_CONNECT_HIDINPUT) | 150 HID_CONNECT_HIDDEV_FORCE; 151 } 152 } 153 154 ret = hid_hw_start(hdev, cmask); 155 if (ret) { 156 dev_err(&hdev->dev, "hw start failed\n"); 157 goto err_free; 158 } 159 160 return 0; 161err_free: 162 return ret; 163} 164 165static const struct hid_device_id samsung_devices[] = { 166 { HID_USB_DEVICE(USB_VENDOR_ID_SAMSUNG, USB_DEVICE_ID_SAMSUNG_IR_REMOTE) }, 167 { HID_USB_DEVICE(USB_VENDOR_ID_SAMSUNG, USB_DEVICE_ID_SAMSUNG_WIRELESS_KBD_MOUSE) }, 168 { } 169}; 170MODULE_DEVICE_TABLE(hid, samsung_devices); 171 172static struct hid_driver samsung_driver = { 173 .name = "samsung", 174 .id_table = samsung_devices, 175 .report_fixup = samsung_report_fixup, 176 .input_mapping = samsung_input_mapping, 177 .probe = samsung_probe, 178}; 179 180static int __init samsung_init(void) 181{ 182 return hid_register_driver(&samsung_driver); 183} 184 185static void __exit samsung_exit(void) 186{ 187 hid_unregister_driver(&samsung_driver); 188} 189 190module_init(samsung_init); 191module_exit(samsung_exit); 192MODULE_LICENSE("GPL"); 193