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 38 /* 39 * There are several variants for 0419:0001: 40 * 41 * 1. 184 byte report descriptor 42 * Vendor specific report #4 has a size of 48 bit, 43 * and therefore is not accepted when inspecting the descriptors. 44 * As a workaround we reinterpret the report as: 45 * Variable type, count 6, size 8 bit, log. maximum 255 46 * The burden to reconstruct the data is moved into user space. 47 * 48 * 2. 203 byte report descriptor 49 * Report #4 has an array field with logical range 0..18 instead of 1..15. 50 * 51 * 3. 135 byte report descriptor 52 * Report #4 has an array field with logical range 0..17 instead of 1..14. 53 * 54 * 4. 171 byte report descriptor 55 * Report #3 has an array field with logical range 0..1 instead of 1..3. 56 */ 57 static inline void samsung_irda_dev_trace(struct hid_device *hdev, 58 unsigned int rsize) 59 { 60 hid_info(hdev, "fixing up Samsung IrDA %d byte report descriptor\n", 61 rsize); 62 } 63 64 static __u8 *samsung_irda_report_fixup(struct hid_device *hdev, __u8 *rdesc, 65 unsigned int *rsize) 66 { 67 if (*rsize == 184 && rdesc[175] == 0x25 && rdesc[176] == 0x40 && 68 rdesc[177] == 0x75 && rdesc[178] == 0x30 && 69 rdesc[179] == 0x95 && rdesc[180] == 0x01 && 70 rdesc[182] == 0x40) { 71 samsung_irda_dev_trace(hdev, 184); 72 rdesc[176] = 0xff; 73 rdesc[178] = 0x08; 74 rdesc[180] = 0x06; 75 rdesc[182] = 0x42; 76 } else 77 if (*rsize == 203 && rdesc[192] == 0x15 && rdesc[193] == 0x0 && 78 rdesc[194] == 0x25 && rdesc[195] == 0x12) { 79 samsung_irda_dev_trace(hdev, 203); 80 rdesc[193] = 0x1; 81 rdesc[195] = 0xf; 82 } else 83 if (*rsize == 135 && rdesc[124] == 0x15 && rdesc[125] == 0x0 && 84 rdesc[126] == 0x25 && rdesc[127] == 0x11) { 85 samsung_irda_dev_trace(hdev, 135); 86 rdesc[125] = 0x1; 87 rdesc[127] = 0xe; 88 } else 89 if (*rsize == 171 && rdesc[160] == 0x15 && rdesc[161] == 0x0 && 90 rdesc[162] == 0x25 && rdesc[163] == 0x01) { 91 samsung_irda_dev_trace(hdev, 171); 92 rdesc[161] = 0x1; 93 rdesc[163] = 0x3; 94 } 95 return rdesc; 96 } 97 98 #define samsung_kbd_mouse_map_key_clear(c) \ 99 hid_map_usage_clear(hi, usage, bit, max, EV_KEY, (c)) 100 101 static int samsung_kbd_mouse_input_mapping(struct hid_device *hdev, 102 struct hid_input *hi, struct hid_field *field, struct hid_usage *usage, 103 unsigned long **bit, int *max) 104 { 105 struct usb_interface *intf = to_usb_interface(hdev->dev.parent); 106 unsigned short ifnum = intf->cur_altsetting->desc.bInterfaceNumber; 107 108 if (1 != ifnum || HID_UP_CONSUMER != (usage->hid & HID_USAGE_PAGE)) 109 return 0; 110 111 dbg_hid("samsung wireless keyboard/mouse input mapping event [0x%x]\n", 112 usage->hid & HID_USAGE); 113 114 switch (usage->hid & HID_USAGE) { 115 /* report 2 */ 116 case 0x183: samsung_kbd_mouse_map_key_clear(KEY_MEDIA); break; 117 case 0x195: samsung_kbd_mouse_map_key_clear(KEY_EMAIL); break; 118 case 0x196: samsung_kbd_mouse_map_key_clear(KEY_CALC); break; 119 case 0x197: samsung_kbd_mouse_map_key_clear(KEY_COMPUTER); break; 120 case 0x22b: samsung_kbd_mouse_map_key_clear(KEY_SEARCH); break; 121 case 0x22c: samsung_kbd_mouse_map_key_clear(KEY_WWW); break; 122 case 0x22d: samsung_kbd_mouse_map_key_clear(KEY_BACK); break; 123 case 0x22e: samsung_kbd_mouse_map_key_clear(KEY_FORWARD); break; 124 case 0x22f: samsung_kbd_mouse_map_key_clear(KEY_FAVORITES); break; 125 case 0x230: samsung_kbd_mouse_map_key_clear(KEY_REFRESH); break; 126 case 0x231: samsung_kbd_mouse_map_key_clear(KEY_STOP); break; 127 default: 128 return 0; 129 } 130 131 return 1; 132 } 133 134 static __u8 *samsung_report_fixup(struct hid_device *hdev, __u8 *rdesc, 135 unsigned int *rsize) 136 { 137 if (USB_DEVICE_ID_SAMSUNG_IR_REMOTE == hdev->product) 138 rdesc = samsung_irda_report_fixup(hdev, rdesc, rsize); 139 return rdesc; 140 } 141 142 static int samsung_input_mapping(struct hid_device *hdev, struct hid_input *hi, 143 struct hid_field *field, struct hid_usage *usage, 144 unsigned long **bit, int *max) 145 { 146 int ret = 0; 147 148 if (USB_DEVICE_ID_SAMSUNG_WIRELESS_KBD_MOUSE == hdev->product) 149 ret = samsung_kbd_mouse_input_mapping(hdev, 150 hi, field, usage, bit, max); 151 152 return ret; 153 } 154 155 static int samsung_probe(struct hid_device *hdev, 156 const struct hid_device_id *id) 157 { 158 int ret; 159 unsigned int cmask = HID_CONNECT_DEFAULT; 160 161 ret = hid_parse(hdev); 162 if (ret) { 163 hid_err(hdev, "parse failed\n"); 164 goto err_free; 165 } 166 167 if (USB_DEVICE_ID_SAMSUNG_IR_REMOTE == hdev->product) { 168 if (hdev->rsize == 184) { 169 /* disable hidinput, force hiddev */ 170 cmask = (cmask & ~HID_CONNECT_HIDINPUT) | 171 HID_CONNECT_HIDDEV_FORCE; 172 } 173 } 174 175 ret = hid_hw_start(hdev, cmask); 176 if (ret) { 177 hid_err(hdev, "hw start failed\n"); 178 goto err_free; 179 } 180 181 return 0; 182 err_free: 183 return ret; 184 } 185 186 static const struct hid_device_id samsung_devices[] = { 187 { HID_USB_DEVICE(USB_VENDOR_ID_SAMSUNG, USB_DEVICE_ID_SAMSUNG_IR_REMOTE) }, 188 { HID_USB_DEVICE(USB_VENDOR_ID_SAMSUNG, USB_DEVICE_ID_SAMSUNG_WIRELESS_KBD_MOUSE) }, 189 { } 190 }; 191 MODULE_DEVICE_TABLE(hid, samsung_devices); 192 193 static struct hid_driver samsung_driver = { 194 .name = "samsung", 195 .id_table = samsung_devices, 196 .report_fixup = samsung_report_fixup, 197 .input_mapping = samsung_input_mapping, 198 .probe = samsung_probe, 199 }; 200 201 static int __init samsung_init(void) 202 { 203 return hid_register_driver(&samsung_driver); 204 } 205 206 static void __exit samsung_exit(void) 207 { 208 hid_unregister_driver(&samsung_driver); 209 } 210 211 module_init(samsung_init); 212 module_exit(samsung_exit); 213 MODULE_LICENSE("GPL"); 214