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kernel_optimize_test/drivers/hid/hid-microsoft.c
Jiri Slaby 3ccc60f9d8 HID: microsoft: fix invalid rdesc for 3k kbd 
Microsoft Digital Media Keyboard 3000 has two interfaces, and the
second one has a report descriptor with a bug. The second collection
says:
05 01 -- global; usage page -- 01 -- Generic Desktop Controls
09 80 -- local; usage -- 80 -- System Control
a1 01 -- main; collection -- 01 -- application

85 03 -- global; report ID -- 03
19 00 -- local; Usage Minimum -- 00
29 ff -- local; Usage Maximum -- ff
15 00 -- global; Logical Minimum -- 0
26 ff 00 -- global; Logical Maximum -- ff
81 00 -- main; input

c0 -- main; End Collection

I.e. it makes us think that there are all kinds of usages of system
control. That the keyboard is a not only a keyboard, but also a
joystick, mouse, gamepad, keypad, etc. The same as for the Wireless
Desktop Receiver, this should be Physical Min/Max. So fix that
appropriately.

References: https://bugzilla.novell.com/show_bug.cgi?id=776834
Cc: <stable@vger.kernel.org>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2012-10-31 10:42:32 +01:00

238 lines
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/*
* HID driver for some microsoft "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) 2008 Jiri Slaby
*/
/*
* 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/input.h>
#include <linux/hid.h>
#include <linux/module.h>
#include "hid-ids.h"
#define MS_HIDINPUT 0x01
#define MS_ERGONOMY 0x02
#define MS_PRESENTER 0x04
#define MS_RDESC 0x08
#define MS_NOGET 0x10
#define MS_DUPLICATE_USAGES 0x20
#define MS_RDESC_3K 0x40
static __u8 *ms_report_fixup(struct hid_device *hdev, __u8 *rdesc,
unsigned int *rsize)
{
unsigned long quirks = (unsigned long)hid_get_drvdata(hdev);
/*
* Microsoft Wireless Desktop Receiver (Model 1028) has
* 'Usage Min/Max' where it ought to have 'Physical Min/Max'
*/
if ((quirks & MS_RDESC) && *rsize == 571 && rdesc[557] == 0x19 &&
rdesc[559] == 0x29) {
hid_info(hdev, "fixing up Microsoft Wireless Receiver Model 1028 report descriptor\n");
rdesc[557] = 0x35;
rdesc[559] = 0x45;
}
/* the same as above (s/usage/physical/) */
if ((quirks & MS_RDESC_3K) && *rsize == 106 &&
!memcmp((char []){ 0x19, 0x00, 0x29, 0xff },
&rdesc[94], 4)) {
rdesc[94] = 0x35;
rdesc[96] = 0x45;
}
return rdesc;
}
#define ms_map_key_clear(c) hid_map_usage_clear(hi, usage, bit, max, \
EV_KEY, (c))
static int ms_ergonomy_kb_quirk(struct hid_input *hi, struct hid_usage *usage,
unsigned long **bit, int *max)
{
struct input_dev *input = hi->input;
switch (usage->hid & HID_USAGE) {
case 0xfd06: ms_map_key_clear(KEY_CHAT); break;
case 0xfd07: ms_map_key_clear(KEY_PHONE); break;
case 0xff05:
set_bit(EV_REP, input->evbit);
ms_map_key_clear(KEY_F13);
set_bit(KEY_F14, input->keybit);
set_bit(KEY_F15, input->keybit);
set_bit(KEY_F16, input->keybit);
set_bit(KEY_F17, input->keybit);
set_bit(KEY_F18, input->keybit);
default:
return 0;
}
return 1;
}
static int ms_presenter_8k_quirk(struct hid_input *hi, struct hid_usage *usage,
unsigned long **bit, int *max)
{
set_bit(EV_REP, hi->input->evbit);
switch (usage->hid & HID_USAGE) {
case 0xfd08: ms_map_key_clear(KEY_FORWARD); break;
case 0xfd09: ms_map_key_clear(KEY_BACK); break;
case 0xfd0b: ms_map_key_clear(KEY_PLAYPAUSE); break;
case 0xfd0e: ms_map_key_clear(KEY_CLOSE); break;
case 0xfd0f: ms_map_key_clear(KEY_PLAY); break;
default:
return 0;
}
return 1;
}
static int ms_input_mapping(struct hid_device *hdev, struct hid_input *hi,
struct hid_field *field, struct hid_usage *usage,
unsigned long **bit, int *max)
{
unsigned long quirks = (unsigned long)hid_get_drvdata(hdev);
if ((usage->hid & HID_USAGE_PAGE) != HID_UP_MSVENDOR)
return 0;
if (quirks & MS_ERGONOMY) {
int ret = ms_ergonomy_kb_quirk(hi, usage, bit, max);
if (ret)
return ret;
}
if ((quirks & MS_PRESENTER) &&
ms_presenter_8k_quirk(hi, usage, bit, max))
return 1;
return 0;
}
static int ms_input_mapped(struct hid_device *hdev, struct hid_input *hi,
struct hid_field *field, struct hid_usage *usage,
unsigned long **bit, int *max)
{
unsigned long quirks = (unsigned long)hid_get_drvdata(hdev);
if (quirks & MS_DUPLICATE_USAGES)
clear_bit(usage->code, *bit);
return 0;
}
static int ms_event(struct hid_device *hdev, struct hid_field *field,
struct hid_usage *usage, __s32 value)
{
unsigned long quirks = (unsigned long)hid_get_drvdata(hdev);
if (!(hdev->claimed & HID_CLAIMED_INPUT) || !field->hidinput ||
!usage->type)
return 0;
/* Handling MS keyboards special buttons */
if (quirks & MS_ERGONOMY && usage->hid == (HID_UP_MSVENDOR | 0xff05)) {
struct input_dev *input = field->hidinput->input;
static unsigned int last_key = 0;
unsigned int key = 0;
switch (value) {
case 0x01: key = KEY_F14; break;
case 0x02: key = KEY_F15; break;
case 0x04: key = KEY_F16; break;
case 0x08: key = KEY_F17; break;
case 0x10: key = KEY_F18; break;
}
if (key) {
input_event(input, usage->type, key, 1);
last_key = key;
} else
input_event(input, usage->type, last_key, 0);
return 1;
}
return 0;
}
static int ms_probe(struct hid_device *hdev, const struct hid_device_id *id)
{
unsigned long quirks = id->driver_data;
int ret;
hid_set_drvdata(hdev, (void *)quirks);
if (quirks & MS_NOGET)
hdev->quirks |= HID_QUIRK_NOGET;
ret = hid_parse(hdev);
if (ret) {
hid_err(hdev, "parse failed\n");
goto err_free;
}
ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT | ((quirks & MS_HIDINPUT) ?
HID_CONNECT_HIDINPUT_FORCE : 0));
if (ret) {
hid_err(hdev, "hw start failed\n");
goto err_free;
}
return 0;
err_free:
return ret;
}
static const struct hid_device_id ms_devices[] = {
{ HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_SIDEWINDER_GV),
.driver_data = MS_HIDINPUT },
{ HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_NE4K),
.driver_data = MS_ERGONOMY },
{ HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_LK6K),
.driver_data = MS_ERGONOMY | MS_RDESC },
{ HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_PRESENTER_8K_USB),
.driver_data = MS_PRESENTER },
{ HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_DIGITAL_MEDIA_3K),
.driver_data = MS_ERGONOMY | MS_RDESC_3K },
{ HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_WIRELESS_OPTICAL_DESKTOP_3_0),
.driver_data = MS_NOGET },
{ HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_COMFORT_MOUSE_4500),
.driver_data = MS_DUPLICATE_USAGES },
{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_PRESENTER_8K_BT),
.driver_data = MS_PRESENTER },
{ }
};
MODULE_DEVICE_TABLE(hid, ms_devices);
static struct hid_driver ms_driver = {
.name = "microsoft",
.id_table = ms_devices,
.report_fixup = ms_report_fixup,
.input_mapping = ms_input_mapping,
.input_mapped = ms_input_mapped,
.event = ms_event,
.probe = ms_probe,
};
static int __init ms_init(void)
{
return hid_register_driver(&ms_driver);
}
static void __exit ms_exit(void)
{
hid_unregister_driver(&ms_driver);
}
module_init(ms_init);
module_exit(ms_exit);
MODULE_LICENSE("GPL");
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