91 lines
2.4 KiB
C
91 lines
2.4 KiB
C
/*
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* u_os_desc.h
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*
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* Utility definitions for "OS Descriptors" support
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*
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* Copyright (c) 2014 Samsung Electronics Co., Ltd.
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* http://www.samsung.com
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*
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* Author: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#ifndef __U_OS_DESC_H__
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#define __U_OS_DESC_H__
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#include <asm/unaligned.h>
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#include <linux/nls.h>
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#define USB_EXT_PROP_DW_SIZE 0
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#define USB_EXT_PROP_DW_PROPERTY_DATA_TYPE 4
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#define USB_EXT_PROP_W_PROPERTY_NAME_LENGTH 8
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#define USB_EXT_PROP_B_PROPERTY_NAME 10
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#define USB_EXT_PROP_DW_PROPERTY_DATA_LENGTH 10
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#define USB_EXT_PROP_B_PROPERTY_DATA 14
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#define USB_EXT_PROP_RESERVED 0
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#define USB_EXT_PROP_UNICODE 1
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#define USB_EXT_PROP_UNICODE_ENV 2
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#define USB_EXT_PROP_BINARY 3
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#define USB_EXT_PROP_LE32 4
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#define USB_EXT_PROP_BE32 5
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#define USB_EXT_PROP_UNICODE_LINK 6
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#define USB_EXT_PROP_UNICODE_MULTI 7
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static inline void usb_ext_prop_put_size(u8 *buf, int dw_size)
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{
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put_unaligned_le32(dw_size, &buf[USB_EXT_PROP_DW_SIZE]);
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}
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static inline void usb_ext_prop_put_type(u8 *buf, int type)
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{
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put_unaligned_le32(type, &buf[USB_EXT_PROP_DW_PROPERTY_DATA_TYPE]);
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}
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static inline int usb_ext_prop_put_name(u8 *buf, const char *name, int pnl)
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{
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int result;
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put_unaligned_le16(pnl, &buf[USB_EXT_PROP_W_PROPERTY_NAME_LENGTH]);
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result = utf8s_to_utf16s(name, strlen(name), UTF16_LITTLE_ENDIAN,
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(wchar_t *) &buf[USB_EXT_PROP_B_PROPERTY_NAME], pnl - 2);
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if (result < 0)
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return result;
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put_unaligned_le16(0, &buf[USB_EXT_PROP_B_PROPERTY_NAME + pnl]);
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return pnl;
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}
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static inline void usb_ext_prop_put_binary(u8 *buf, int pnl, const u8 *data,
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int data_len)
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{
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put_unaligned_le32(data_len,
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&buf[USB_EXT_PROP_DW_PROPERTY_DATA_LENGTH + pnl]);
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memcpy(&buf[USB_EXT_PROP_B_PROPERTY_DATA + pnl], data, data_len);
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}
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static inline int usb_ext_prop_put_unicode(u8 *buf, int pnl, const char *string,
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int data_len)
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{
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int result;
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put_unaligned_le32(data_len,
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&buf[USB_EXT_PROP_DW_PROPERTY_DATA_LENGTH + pnl]);
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result = utf8s_to_utf16s(string, data_len >> 1, UTF16_LITTLE_ENDIAN,
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(wchar_t *) &buf[USB_EXT_PROP_B_PROPERTY_DATA + pnl],
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data_len - 2);
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if (result < 0)
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return result;
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put_unaligned_le16(0,
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&buf[USB_EXT_PROP_B_PROPERTY_DATA + pnl + data_len]);
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return data_len;
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}
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#endif /* __U_OS_DESC_H__ */
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