release/src-rt-6.x.4708/linux/linux-2.6.36/drivers/hid/hid-samsung.c

   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 static 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
  45 static 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
  81 static 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
 114 static 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
 121 static 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
 134 static 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;
 161 err_free:
 162         return ret;
 163 }
 164
 165 static 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 };
 170 MODULE_DEVICE_TABLE(hid, samsung_devices);
 171
 172 static 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
 180 static int __init samsung_init(void)
 181 {
 182         return hid_register_driver(&samsung_driver);
 183 }
 184
 185 static void __exit samsung_exit(void)
 186 {
 187         hid_unregister_driver(&samsung_driver);
 188 }
 189
 190 module_init(samsung_init);
 191 module_exit(samsung_exit);
 192 MODULE_LICENSE("GPL");