1/*
2 * Copyright (c) 2012 GCT Semiconductor, Inc. All rights reserved.
3 *
4 * This software is licensed under the terms of the GNU General Public
5 * License version 2, as published by the Free Software Foundation, and
6 * may be copied, distributed, and modified under those terms.
7 *
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
12 */
13
14#ifndef __GDM_ENDIAN_H__
15#define __GDM_ENDIAN_H__
16
17#include <linux/types.h>
18
19#define Endian16_Swap(value) \
20	((((u16)((value) & 0x00FF)) << 8) | \
21	 (((u16)((value) & 0xFF00)) >> 8))
22
23#define Endian32_Swap(value) \
24	((((u32)((value) & 0x000000FF)) << 24) | \
25	 (((u32)((value) & 0x0000FF00)) << 8) | \
26	 (((u32)((value) & 0x00FF0000)) >> 8) | \
27	 (((u32)((value) & 0xFF000000)) >> 24))
28
29enum {
30	ENDIANNESS_MIN = 0,
31	ENDIANNESS_UNKNOWN,
32	ENDIANNESS_LITTLE,
33	ENDIANNESS_BIG,
34	ENDIANNESS_MIDDLE,
35	ENDIANNESS_MAX
36};
37
38struct gdm_endian {
39	u8 dev_ed;
40	u8 host_ed;
41};
42
43void gdm_set_endian(struct gdm_endian *ed, u8 dev_endian);
44u16 gdm_cpu_to_dev16(struct gdm_endian *ed, u16 x);
45u16 gdm_dev16_to_cpu(struct gdm_endian *ed, u16 x);
46u32 gdm_cpu_to_dev32(struct gdm_endian *ed, u32 x);
47u32 gdm_dev32_to_cpu(struct gdm_endian *ed, u32 x);
48
49#endif /*__GDM_ENDIAN_H__*/
50