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) 2008 Jiri Slaby 9 * Copyright (c) 2010 Don Prince <dhprince.devel@yahoo.co.uk> 10 * 11 * 12 * This driver supports several HID devices: 13 * 14 * [0419:0001] Samsung IrDA remote controller (reports as Cypress USB Mouse). 15 * various hid report fixups for different variants. 16 * 17 * [0419:0600] Creative Desktop Wireless 6000 keyboard/mouse combo 18 * several key mappings used from the consumer usage page 19 * deviate from the USB HUT 1.12 standard. 20 * 21 */ 22 23 /* 24 * This program is free software; you can redistribute it and/or modify it 25 * under the terms of the GNU General Public License as published by the Free 26 * Software Foundation; either version 2 of the License, or (at your option) 27 * any later version. 28 */ 29 30 #include <linux/device.h> 31 #include <linux/usb.h> 32 #include <linux/hid.h> 33 #include <linux/module.h> 34 35 #include "hid-ids.h" 36 37 /* 38 * There are several variants for 0419:0001: 39 * 40 * 1. 184 byte report descriptor 41 * Vendor specific report #4 has a size of 48 bit, 42 * and therefore is not accepted when inspecting the descriptors. 43 * As a workaround we reinterpret the report as: 44 * Variable type, count 6, size 8 bit, log. maximum 255 45 * The burden to reconstruct the data is moved into user space. 46 * 47 * 2. 203 byte report descriptor 48 * Report #4 has an array field with logical range 0..18 instead of 1..15. 49 * 50 * 3. 135 byte report descriptor 51 * Report #4 has an array field with logical range 0..17 instead of 1..14. 52 * 53 * 4. 171 byte report descriptor 54 * Report #3 has an array field with logical range 0..1 instead of 1..3. 55 */ 56 static inline void samsung_irda_dev_trace(struct hid_device *hdev, 57 unsigned int rsize) 58 { 59 hid_info(hdev, "fixing up Samsung IrDA %d byte report descriptor\n", 60 rsize); 61 } 62 63 static __u8 *samsung_irda_report_fixup(struct hid_device *hdev, __u8 *rdesc, 64 unsigned int *rsize) 65 { 66 if (*rsize == 184 && rdesc[175] == 0x25 && rdesc[176] == 0x40 && 67 rdesc[177] == 0x75 && rdesc[178] == 0x30 && 68 rdesc[179] == 0x95 && rdesc[180] == 0x01 && 69 rdesc[182] == 0x40) { 70 samsung_irda_dev_trace(hdev, 184); 71 rdesc[176] = 0xff; 72 rdesc[178] = 0x08; 73 rdesc[180] = 0x06; 74 rdesc[182] = 0x42; 75 } else 76 if (*rsize == 203 && rdesc[192] == 0x15 && rdesc[193] == 0x0 && 77 rdesc[194] == 0x25 && rdesc[195] == 0x12) { 78 samsung_irda_dev_trace(hdev, 203); 79 rdesc[193] = 0x1; 80 rdesc[195] = 0xf; 81 } else 82 if (*rsize == 135 && rdesc[124] == 0x15 && rdesc[125] == 0x0 && 83 rdesc[126] == 0x25 && rdesc[127] == 0x11) { 84 samsung_irda_dev_trace(hdev, 135); 85 rdesc[125] = 0x1; 86 rdesc[127] = 0xe; 87 } else 88 if (*rsize == 171 && rdesc[160] == 0x15 && rdesc[161] == 0x0 && 89 rdesc[162] == 0x25 && rdesc[163] == 0x01) { 90 samsung_irda_dev_trace(hdev, 171); 91 rdesc[161] = 0x1; 92 rdesc[163] = 0x3; 93 } 94 return rdesc; 95 } 96 97 #define samsung_kbd_mouse_map_key_clear(c) \ 98 hid_map_usage_clear(hi, usage, bit, max, EV_KEY, (c)) 99 100 static int samsung_kbd_mouse_input_mapping(struct hid_device *hdev, 101 struct hid_input *hi, struct hid_field *field, struct hid_usage *usage, 102 unsigned long **bit, int *max) 103 { 104 struct usb_interface *intf = to_usb_interface(hdev->dev.parent); 105 unsigned short ifnum = intf->cur_altsetting->desc.bInterfaceNumber; 106 107 if (1 != ifnum || HID_UP_CONSUMER != (usage->hid & HID_USAGE_PAGE)) 108 return 0; 109 110 dbg_hid("samsung wireless keyboard/mouse input mapping event [0x%x]\n", 111 usage->hid & HID_USAGE); 112 113 switch (usage->hid & HID_USAGE) { 114 /* report 2 */ 115 case 0x183: samsung_kbd_mouse_map_key_clear(KEY_MEDIA); break; 116 case 0x195: samsung_kbd_mouse_map_key_clear(KEY_EMAIL); break; 117 case 0x196: samsung_kbd_mouse_map_key_clear(KEY_CALC); break; 118 case 0x197: samsung_kbd_mouse_map_key_clear(KEY_COMPUTER); break; 119 case 0x22b: samsung_kbd_mouse_map_key_clear(KEY_SEARCH); break; 120 case 0x22c: samsung_kbd_mouse_map_key_clear(KEY_WWW); break; 121 case 0x22d: samsung_kbd_mouse_map_key_clear(KEY_BACK); break; 122 case 0x22e: samsung_kbd_mouse_map_key_clear(KEY_FORWARD); break; 123 case 0x22f: samsung_kbd_mouse_map_key_clear(KEY_FAVORITES); break; 124 case 0x230: samsung_kbd_mouse_map_key_clear(KEY_REFRESH); break; 125 case 0x231: samsung_kbd_mouse_map_key_clear(KEY_STOP); break; 126 default: 127 return 0; 128 } 129 130 return 1; 131 } 132 133 static __u8 *samsung_report_fixup(struct hid_device *hdev, __u8 *rdesc, 134 unsigned int *rsize) 135 { 136 if (USB_DEVICE_ID_SAMSUNG_IR_REMOTE == hdev->product) 137 rdesc = samsung_irda_report_fixup(hdev, rdesc, rsize); 138 return rdesc; 139 } 140 141 static int samsung_input_mapping(struct hid_device *hdev, struct hid_input *hi, 142 struct hid_field *field, struct hid_usage *usage, 143 unsigned long **bit, int *max) 144 { 145 int ret = 0; 146 147 if (USB_DEVICE_ID_SAMSUNG_WIRELESS_KBD_MOUSE == hdev->product) 148 ret = samsung_kbd_mouse_input_mapping(hdev, 149 hi, field, usage, bit, max); 150 151 return ret; 152 } 153 154 static int samsung_probe(struct hid_device *hdev, 155 const struct hid_device_id *id) 156 { 157 int ret; 158 unsigned int cmask = HID_CONNECT_DEFAULT; 159 160 ret = hid_parse(hdev); 161 if (ret) { 162 hid_err(hdev, "parse failed\n"); 163 goto err_free; 164 } 165 166 if (USB_DEVICE_ID_SAMSUNG_IR_REMOTE == hdev->product) { 167 if (hdev->rsize == 184) { 168 /* disable hidinput, force hiddev */ 169 cmask = (cmask & ~HID_CONNECT_HIDINPUT) | 170 HID_CONNECT_HIDDEV_FORCE; 171 } 172 } 173 174 ret = hid_hw_start(hdev, cmask); 175 if (ret) { 176 hid_err(hdev, "hw start failed\n"); 177 goto err_free; 178 } 179 180 return 0; 181 err_free: 182 return ret; 183 } 184 185 static const struct hid_device_id samsung_devices[] = { 186 { HID_USB_DEVICE(USB_VENDOR_ID_SAMSUNG, USB_DEVICE_ID_SAMSUNG_IR_REMOTE) }, 187 { HID_USB_DEVICE(USB_VENDOR_ID_SAMSUNG, USB_DEVICE_ID_SAMSUNG_WIRELESS_KBD_MOUSE) }, 188 { } 189 }; 190 MODULE_DEVICE_TABLE(hid, samsung_devices); 191 192 static struct hid_driver samsung_driver = { 193 .name = "samsung", 194 .id_table = samsung_devices, 195 .report_fixup = samsung_report_fixup, 196 .input_mapping = samsung_input_mapping, 197 .probe = samsung_probe, 198 }; 199 module_hid_driver(samsung_driver); 200 201 MODULE_LICENSE("GPL"); 202