1 /*
2  * (C) Copyright 2014 Hans de Goede <hdegoede@redhat.com>
3  *
4  * Based on allwinner u-boot sources rsb code which is:
5  * (C) Copyright 2007-2013
6  * Allwinner Technology Co., Ltd. <www.allwinnertech.com>
7  * lixiang <lixiang@allwinnertech.com>
8  *
9  * SPDX-License-Identifier:	GPL-2.0+
10  */
11 
12 #ifndef __SUNXI_RSB_H
13 #define __SUNXI_RSB_H
14 
15 #include <common.h>
16 #include <asm/io.h>
17 
18 struct sunxi_rsb_reg {
19 	u32 ctrl;	/* 0x00 */
20 	u32 ccr;	/* 0x04 */
21 	u32 inte;	/* 0x08 */
22 	u32 stat;	/* 0x0c */
23 	u32 addr;	/* 0x10 */
24 	u8 res0[8];	/* 0x14 */
25 	u32 data;	/* 0x1c */
26 	u8 res1[4];	/* 0x20 */
27 	u32 lcr;	/* 0x24 */
28 	u32 dmcr;	/* 0x28 */
29 	u32 cmd;	/* 0x2c */
30 	u32 devaddr;	/* 0x30 */
31 };
32 
33 #define RSB_CTRL_SOFT_RST		(1 << 0)
34 #define RSB_CTRL_START_TRANS		(1 << 7)
35 
36 #define RSB_STAT_TOVER_INT		(1 << 0)
37 #define RSB_STAT_TERR_INT		(1 << 1)
38 #define RSB_STAT_LBSY_INT		(1 << 2)
39 
40 #define RSB_DMCR_DEVICE_MODE_START	(1 << 31)
41 
42 #define RSB_CMD_BYTE_WRITE		0x4e
43 #define RSB_CMD_BYTE_READ		0x8b
44 #define RSB_CMD_SET_RTSADDR		0xe8
45 
46 #define RSB_DEVADDR_RUNTIME_ADDR(x)	((x) << 16)
47 #define RSB_DEVADDR_DEVICE_ADDR(x)	((x) << 0)
48 
49 void rsb_init(void);
50 int rsb_set_device_mode(u32 device_mode_data);
51 int rsb_set_device_address(u16 device_addr, u16 runtime_addr);
52 int rsb_write(const u16 runtime_device_addr, const u8 reg_addr, u8 data);
53 int rsb_read(const u16 runtime_device_addr, const u8 reg_addr, u8 *data);
54 
55 #endif
56