projects / mirror_ubuntu-bionic-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| 37a3a533 AP |
1 | /* |
| 2 | * u_os_desc.h | |
| 3 | * | |
| 4 | * Utility definitions for "OS Descriptors" support | |
| 5 | * | |
| 6 | * Copyright (c) 2014 Samsung Electronics Co., Ltd. | |
| 7 | * http://www.samsung.com | |
| 8 | * | |
| 9 | * Author: Andrzej Pietrasiewicz <andrzej.p@samsung.com> | |
| 10 | * | |
| 11 | * This program is free software; you can redistribute it and/or modify | |
| 12 | * it under the terms of the GNU General Public License version 2 as | |
| 13 | * published by the Free Software Foundation. | |
| 14 | */ | |
| 15 | ||
| 16 | #ifndef __U_OS_DESC_H__ | |
| 17 | #define __U_OS_DESC_H__ | |
| 18 | ||
| 19 | #include <asm/unaligned.h> | |
| 20 | #include <linux/nls.h> | |
| 21 | ||
| 22 | #define USB_EXT_PROP_DW_SIZE 0 | |
| 23 | #define USB_EXT_PROP_DW_PROPERTY_DATA_TYPE 4 | |
| 24 | #define USB_EXT_PROP_W_PROPERTY_NAME_LENGTH 8 | |
| 25 | #define USB_EXT_PROP_B_PROPERTY_NAME 10 | |
| 26 | #define USB_EXT_PROP_DW_PROPERTY_DATA_LENGTH 10 | |
| 27 | #define USB_EXT_PROP_B_PROPERTY_DATA 14 | |
| 28 | ||
| 29 | #define USB_EXT_PROP_RESERVED 0 | |
| 30 | #define USB_EXT_PROP_UNICODE 1 | |
| 31 | #define USB_EXT_PROP_UNICODE_ENV 2 | |
| 32 | #define USB_EXT_PROP_BINARY 3 | |
| 33 | #define USB_EXT_PROP_LE32 4 | |
| 34 | #define USB_EXT_PROP_BE32 5 | |
| 35 | #define USB_EXT_PROP_UNICODE_LINK 6 | |
| 36 | #define USB_EXT_PROP_UNICODE_MULTI 7 | |
| 37 | ||
| 38 | static inline void usb_ext_prop_put_size(u8 *buf, int dw_size) | |
| 39 | { | |
| 40 | put_unaligned_le32(dw_size, &buf[USB_EXT_PROP_DW_SIZE]); | |
| 41 | } | |
| 42 | ||
| 43 | static inline void usb_ext_prop_put_type(u8 *buf, int type) | |
| 44 | { | |
| 45 | put_unaligned_le32(type, &buf[USB_EXT_PROP_DW_PROPERTY_DATA_TYPE]); | |
| 46 | } | |
| 47 | ||
| 48 | static inline int usb_ext_prop_put_name(u8 *buf, const char *name, int pnl) | |
| 49 | { | |
| 50 | int result; | |
| 51 | ||
| 52 | put_unaligned_le16(pnl, &buf[USB_EXT_PROP_W_PROPERTY_NAME_LENGTH]); | |
| 53 | result = utf8s_to_utf16s(name, strlen(name), UTF16_LITTLE_ENDIAN, | |
| 54 | (wchar_t *) &buf[USB_EXT_PROP_B_PROPERTY_NAME], pnl - 2); | |
| 55 | if (result < 0) | |
| 56 | return result; | |
| 57 | ||
| 58 | put_unaligned_le16(0, &buf[USB_EXT_PROP_B_PROPERTY_NAME + pnl]); | |
| 59 | ||
| 60 | return pnl; | |
| 61 | } | |
| 62 | ||
| 63 | static inline void usb_ext_prop_put_binary(u8 *buf, int pnl, const u8 *data, | |
| 64 | int data_len) | |
| 65 | { | |
| 66 | put_unaligned_le32(data_len, | |
| 67 | &buf[USB_EXT_PROP_DW_PROPERTY_DATA_LENGTH + pnl]); | |
| 68 | memcpy(&buf[USB_EXT_PROP_B_PROPERTY_DATA + pnl], data, data_len); | |
| 69 | } | |
| 70 | ||
| 71 | static inline int usb_ext_prop_put_unicode(u8 *buf, int pnl, const char *string, | |
| 72 | int data_len) | |
| 73 | { | |
| 74 | int result; | |
| 75 | put_unaligned_le32(data_len, | |
| 76 | &buf[USB_EXT_PROP_DW_PROPERTY_DATA_LENGTH + pnl]); | |
| 77 | ||
| 78 | result = utf8s_to_utf16s(string, data_len >> 1, UTF16_LITTLE_ENDIAN, | |
| 79 | (wchar_t *) &buf[USB_EXT_PROP_B_PROPERTY_DATA + pnl], | |
| 80 | data_len - 2); | |
| 81 | if (result < 0) | |
| 82 | return result; | |
| 83 | ||
| 84 | put_unaligned_le16(0, | |
| 85 | &buf[USB_EXT_PROP_B_PROPERTY_DATA + pnl + data_len]); | |
| 86 | ||
| 87 | return data_len; | |
| 88 | } | |
| 89 | ||
| 90 | #endif /* __U_OS_DESC_H__ */ |