/* * HID driver for some samsung "special" devices * * Copyright (c) 1999 Andreas Gal * Copyright (c) 2000-2005 Vojtech Pavlik <vojtech@suse.cz> * Copyright (c) 2005 Michael Haboustak <mike-@cinci.rr.com> for Concept2, Inc * Copyright (c) 2006-2007 Jiri Kosina * Copyright (c) 2007 Paul Walmsley * Copyright (c) 2008 Jiri Slaby * Copyright (c) 2010 Don Prince <dhprince.devel@yahoo.co.uk> * * * This driver supports several HID devices: * * [0419:0001] Samsung IrDA remote controller (reports as Cypress USB Mouse). * various hid report fixups for different variants. * * [0419:0600] Creative Desktop Wireless 6000 keyboard/mouse combo * several key mappings used from the consumer usage page * deviate from the USB HUT 1.12 standard. * */ /* * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the Free * Software Foundation; either version 2 of the License, or (at your option) * any later version. */ #include <linux/device.h> #include <linux/usb.h> #include <linux/hid.h> #include <linux/module.h> #include "hid-ids.h" /* * There are several variants for 0419:0001: * * 1. 184 byte report descriptor * Vendor specific report #4 has a size of 48 bit, * and therefore is not accepted when inspecting the descriptors. * As a workaround we reinterpret the report as: * Variable type, count 6, size 8 bit, log. maximum 255 * The burden to reconstruct the data is moved into user space. * * 2. 203 byte report descriptor * Report #4 has an array field with logical range 0..18 instead of 1..15. * * 3. 135 byte report descriptor * Report #4 has an array field with logical range 0..17 instead of 1..14. * * 4. 171 byte report descriptor * Report #3 has an array field with logical range 0..1 instead of 1..3. */ static inline void samsung_irda_dev_trace(struct hid_device *hdev, unsigned int rsize) { dev_info(&hdev->dev, "fixing up Samsung IrDA %d byte report " "descriptor\n", rsize); } static void samsung_irda_report_fixup(struct hid_device *hdev, __u8 *rdesc, unsigned int rsize) { if (rsize == 184 && rdesc[175] == 0x25 && rdesc[176] == 0x40 && rdesc[177] == 0x75 && rdesc[178] == 0x30 && rdesc[179] == 0x95 && rdesc[180] == 0x01 && rdesc[182] == 0x40) { samsung_irda_dev_trace(hdev, 184); rdesc[176] = 0xff; rdesc[178] = 0x08; rdesc[180] = 0x06; rdesc[182] = 0x42; } else if (rsize == 203 && rdesc[192] == 0x15 && rdesc[193] == 0x0 && rdesc[194] == 0x25 && rdesc[195] == 0x12) { samsung_irda_dev_trace(hdev, 203); rdesc[193] = 0x1; rdesc[195] = 0xf; } else if (rsize == 135 && rdesc[124] == 0x15 && rdesc[125] == 0x0 && rdesc[126] == 0x25 && rdesc[127] == 0x11) { samsung_irda_dev_trace(hdev, 135); rdesc[125] = 0x1; rdesc[127] = 0xe; } else if (rsize == 171 && rdesc[160] == 0x15 && rdesc[161] == 0x0 && rdesc[162] == 0x25 && rdesc[163] == 0x01) { samsung_irda_dev_trace(hdev, 171); rdesc[161] = 0x1; rdesc[163] = 0x3; } } #define samsung_kbd_mouse_map_key_clear(c) \ hid_map_usage_clear(hi, usage, bit, max, EV_KEY, (c)) static int samsung_kbd_mouse_input_mapping(struct hid_device *hdev, struct hid_input *hi, struct hid_field *field, struct hid_usage *usage, unsigned long **bit, int *max) { struct usb_interface *intf = to_usb_interface(hdev->dev.parent); unsigned short ifnum = intf->cur_altsetting->desc.bInterfaceNumber; if (1 != ifnum || HID_UP_CONSUMER != (usage->hid & HID_USAGE_PAGE)) return 0; dbg_hid("samsung wireless keyboard/mouse input mapping event [0x%x]\n", usage->hid & HID_USAGE); switch (usage->hid & HID_USAGE) { /* report 2 */ case 0x183: samsung_kbd_mouse_map_key_clear(KEY_MEDIA); break; case 0x195: samsung_kbd_mouse_map_key_clear(KEY_EMAIL); break; case 0x196: samsung_kbd_mouse_map_key_clear(KEY_CALC); break; case 0x197: samsung_kbd_mouse_map_key_clear(KEY_COMPUTER); break; case 0x22b: samsung_kbd_mouse_map_key_clear(KEY_SEARCH); break; case 0x22c: samsung_kbd_mouse_map_key_clear(KEY_WWW); break; case 0x22d: samsung_kbd_mouse_map_key_clear(KEY_BACK); break; case 0x22e: samsung_kbd_mouse_map_key_clear(KEY_FORWARD); break; case 0x22f: samsung_kbd_mouse_map_key_clear(KEY_FAVORITES); break; case 0x230: samsung_kbd_mouse_map_key_clear(KEY_REFRESH); break; case 0x231: samsung_kbd_mouse_map_key_clear(KEY_STOP); break; default: return 0; } return 1; } static void samsung_report_fixup(struct hid_device *hdev, __u8 *rdesc, unsigned int rsize) { if (USB_DEVICE_ID_SAMSUNG_IR_REMOTE == hdev->product) samsung_irda_report_fixup(hdev, rdesc, rsize); } static int samsung_input_mapping(struct hid_device *hdev, struct hid_input *hi, struct hid_field *field, struct hid_usage *usage, unsigned long **bit, int *max) { int ret = 0; if (USB_DEVICE_ID_SAMSUNG_WIRELESS_KBD_MOUSE == hdev->product) ret = samsung_kbd_mouse_input_mapping(hdev, hi, field, usage, bit, max); return ret; } static int samsung_probe(struct hid_device *hdev, const struct hid_device_id *id) { int ret; unsigned int cmask = HID_CONNECT_DEFAULT; ret = hid_parse(hdev); if (ret) { dev_err(&hdev->dev, "parse failed\n"); goto err_free; } if (USB_DEVICE_ID_SAMSUNG_IR_REMOTE == hdev->product) { if (hdev->rsize == 184) { /* disable hidinput, force hiddev */ cmask = (cmask & ~HID_CONNECT_HIDINPUT) | HID_CONNECT_HIDDEV_FORCE; } } ret = hid_hw_start(hdev, cmask); if (ret) { dev_err(&hdev->dev, "hw start failed\n"); goto err_free; } return 0; err_free: return ret; } static const struct hid_device_id samsung_devices[] = { { HID_USB_DEVICE(USB_VENDOR_ID_SAMSUNG, USB_DEVICE_ID_SAMSUNG_IR_REMOTE) }, { HID_USB_DEVICE(USB_VENDOR_ID_SAMSUNG, USB_DEVICE_ID_SAMSUNG_WIRELESS_KBD_MOUSE) }, { } }; MODULE_DEVICE_TABLE(hid, samsung_devices); static struct hid_driver samsung_driver = { .name = "samsung", .id_table = samsung_devices, .report_fixup = samsung_report_fixup, .input_mapping = samsung_input_mapping, .probe = samsung_probe, }; static int __init samsung_init(void) { return hid_register_driver(&samsung_driver); } static void __exit samsung_exit(void) { hid_unregister_driver(&samsung_driver); } module_init(samsung_init); module_exit(samsung_exit); MODULE_LICENSE("GPL");