Merge tag 'u-boot-atmel-fixes-2020.07-a' of https://gitlab.denx.de/u-boot/custodians...
[oweals/u-boot.git] / arch / arm / include / asm / arch-sunxi / rsb.h
1 /* SPDX-License-Identifier: GPL-2.0+ */
2 /*
3  * (C) Copyright 2014 Hans de Goede <hdegoede@redhat.com>
4  *
5  * Based on allwinner u-boot sources rsb code which is:
6  * (C) Copyright 2007-2013
7  * Allwinner Technology Co., Ltd. <www.allwinnertech.com>
8  * lixiang <lixiang@allwinnertech.com>
9  */
10
11 #ifndef __SUNXI_RSB_H
12 #define __SUNXI_RSB_H
13
14 #include <asm/io.h>
15
16 struct sunxi_rsb_reg {
17         u32 ctrl;       /* 0x00 */
18         u32 ccr;        /* 0x04 */
19         u32 inte;       /* 0x08 */
20         u32 stat;       /* 0x0c */
21         u32 addr;       /* 0x10 */
22         u8 res0[8];     /* 0x14 */
23         u32 data;       /* 0x1c */
24         u8 res1[4];     /* 0x20 */
25         u32 lcr;        /* 0x24 */
26         u32 dmcr;       /* 0x28 */
27         u32 cmd;        /* 0x2c */
28         u32 devaddr;    /* 0x30 */
29 };
30
31 #define RSB_CTRL_SOFT_RST               (1 << 0)
32 #define RSB_CTRL_START_TRANS            (1 << 7)
33
34 #define RSB_STAT_TOVER_INT              (1 << 0)
35 #define RSB_STAT_TERR_INT               (1 << 1)
36 #define RSB_STAT_LBSY_INT               (1 << 2)
37
38 #define RSB_DMCR_DEVICE_MODE_DATA       0x7c3e00
39 #define RSB_DMCR_DEVICE_MODE_START      (1 << 31)
40
41 #define RSB_CMD_BYTE_WRITE              0x4e
42 #define RSB_CMD_BYTE_READ               0x8b
43 #define RSB_CMD_SET_RTSADDR             0xe8
44
45 #define RSB_DEVADDR_RUNTIME_ADDR(x)     ((x) << 16)
46 #define RSB_DEVADDR_DEVICE_ADDR(x)      ((x) << 0)
47
48 int rsb_init(void);
49 int rsb_set_device_address(u16 device_addr, u16 runtime_addr);
50 int rsb_write(const u16 runtime_device_addr, const u8 reg_addr, u8 data);
51 int rsb_read(const u16 runtime_device_addr, const u8 reg_addr, u8 *data);
52
53 #endif