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 18struct 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_DATA 0x7c3e00 41#define RSB_DMCR_DEVICE_MODE_START (1 << 31) 42 43#define RSB_CMD_BYTE_WRITE 0x4e 44#define RSB_CMD_BYTE_READ 0x8b 45#define RSB_CMD_SET_RTSADDR 0xe8 46 47#define RSB_DEVADDR_RUNTIME_ADDR(x) ((x) << 16) 48#define RSB_DEVADDR_DEVICE_ADDR(x) ((x) << 0) 49 50int rsb_init(void); 51int rsb_set_device_address(u16 device_addr, u16 runtime_addr); 52int rsb_write(const u16 runtime_device_addr, const u8 reg_addr, u8 data); 53int rsb_read(const u16 runtime_device_addr, const u8 reg_addr, u8 *data); 54 55#endif 56