121 lines
3.0 KiB
C
121 lines
3.0 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
/*
|
|
* u_os_desc.h
|
|
*
|
|
* Utility definitions for "OS Descriptors" support
|
|
*
|
|
* Copyright (c) 2014 Samsung Electronics Co., Ltd.
|
|
* http://www.samsung.com
|
|
*
|
|
* Author: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
|
|
*/
|
|
|
|
#ifndef __U_OS_DESC_H__
|
|
#define __U_OS_DESC_H__
|
|
|
|
#include <asm/unaligned.h>
|
|
#include <linux/nls.h>
|
|
|
|
#define USB_EXT_PROP_DW_SIZE 0
|
|
#define USB_EXT_PROP_DW_PROPERTY_DATA_TYPE 4
|
|
#define USB_EXT_PROP_W_PROPERTY_NAME_LENGTH 8
|
|
#define USB_EXT_PROP_B_PROPERTY_NAME 10
|
|
#define USB_EXT_PROP_DW_PROPERTY_DATA_LENGTH 10
|
|
#define USB_EXT_PROP_B_PROPERTY_DATA 14
|
|
|
|
#define USB_EXT_PROP_RESERVED 0
|
|
#define USB_EXT_PROP_UNICODE 1
|
|
#define USB_EXT_PROP_UNICODE_ENV 2
|
|
#define USB_EXT_PROP_BINARY 3
|
|
#define USB_EXT_PROP_LE32 4
|
|
#define USB_EXT_PROP_BE32 5
|
|
#define USB_EXT_PROP_UNICODE_LINK 6
|
|
#define USB_EXT_PROP_UNICODE_MULTI 7
|
|
|
|
static inline u8 *__usb_ext_prop_ptr(u8 *buf, size_t offset)
|
|
{
|
|
return buf + offset;
|
|
}
|
|
|
|
static inline u8 *usb_ext_prop_size_ptr(u8 *buf)
|
|
{
|
|
return __usb_ext_prop_ptr(buf, USB_EXT_PROP_DW_SIZE);
|
|
}
|
|
|
|
static inline u8 *usb_ext_prop_type_ptr(u8 *buf)
|
|
{
|
|
return __usb_ext_prop_ptr(buf, USB_EXT_PROP_DW_PROPERTY_DATA_TYPE);
|
|
}
|
|
|
|
static inline u8 *usb_ext_prop_name_len_ptr(u8 *buf)
|
|
{
|
|
return __usb_ext_prop_ptr(buf, USB_EXT_PROP_W_PROPERTY_NAME_LENGTH);
|
|
}
|
|
|
|
static inline u8 *usb_ext_prop_name_ptr(u8 *buf)
|
|
{
|
|
return __usb_ext_prop_ptr(buf, USB_EXT_PROP_B_PROPERTY_NAME);
|
|
}
|
|
|
|
static inline u8 *usb_ext_prop_data_len_ptr(u8 *buf, size_t off)
|
|
{
|
|
return __usb_ext_prop_ptr(buf,
|
|
USB_EXT_PROP_DW_PROPERTY_DATA_LENGTH + off);
|
|
}
|
|
|
|
static inline u8 *usb_ext_prop_data_ptr(u8 *buf, size_t off)
|
|
{
|
|
return __usb_ext_prop_ptr(buf, USB_EXT_PROP_B_PROPERTY_DATA + off);
|
|
}
|
|
|
|
static inline void usb_ext_prop_put_size(u8 *buf, int dw_size)
|
|
{
|
|
put_unaligned_le32(dw_size, usb_ext_prop_size_ptr(buf));
|
|
}
|
|
|
|
static inline void usb_ext_prop_put_type(u8 *buf, int type)
|
|
{
|
|
put_unaligned_le32(type, usb_ext_prop_type_ptr(buf));
|
|
}
|
|
|
|
static inline int usb_ext_prop_put_name(u8 *buf, const char *name, int pnl)
|
|
{
|
|
int result;
|
|
|
|
put_unaligned_le16(pnl, usb_ext_prop_name_len_ptr(buf));
|
|
result = utf8s_to_utf16s(name, strlen(name), UTF16_LITTLE_ENDIAN,
|
|
(wchar_t *) usb_ext_prop_name_ptr(buf), pnl - 2);
|
|
if (result < 0)
|
|
return result;
|
|
|
|
put_unaligned_le16(0, &buf[USB_EXT_PROP_B_PROPERTY_NAME + pnl - 2]);
|
|
|
|
return pnl;
|
|
}
|
|
|
|
static inline void usb_ext_prop_put_binary(u8 *buf, int pnl, const u8 *data,
|
|
int data_len)
|
|
{
|
|
put_unaligned_le32(data_len, usb_ext_prop_data_len_ptr(buf, pnl));
|
|
memcpy(usb_ext_prop_data_ptr(buf, pnl), data, data_len);
|
|
}
|
|
|
|
static inline int usb_ext_prop_put_unicode(u8 *buf, int pnl, const char *string,
|
|
int data_len)
|
|
{
|
|
int result;
|
|
put_unaligned_le32(data_len, usb_ext_prop_data_len_ptr(buf, pnl));
|
|
result = utf8s_to_utf16s(string, data_len >> 1, UTF16_LITTLE_ENDIAN,
|
|
(wchar_t *) usb_ext_prop_data_ptr(buf, pnl),
|
|
data_len - 2);
|
|
if (result < 0)
|
|
return result;
|
|
|
|
put_unaligned_le16(0,
|
|
&buf[USB_EXT_PROP_B_PROPERTY_DATA + pnl + data_len - 2]);
|
|
|
|
return data_len;
|
|
}
|
|
|
|
#endif /* __U_OS_DESC_H__ */
|