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/* SPDX-License-Identifier: GPL-2.0+ */
/*
* (C) Copyright 2014 Hans de Goede <hdegoede@redhat.com>
*
* Based on allwinner u-boot sources rsb code which is:
* (C) Copyright 2007-2013
* Allwinner Technology Co., Ltd. <www.allwinnertech.com>
* lixiang <lixiang@allwinnertech.com>
*/
#ifndef __SUNXI_RSB_H
#define __SUNXI_RSB_H
#include <asm/io.h>
struct sunxi_rsb_reg {
u32 ctrl; /* 0x00 */
u32 ccr; /* 0x04 */
u32 inte; /* 0x08 */
u32 stat; /* 0x0c */
u32 addr; /* 0x10 */
u8 res0[8]; /* 0x14 */
u32 data; /* 0x1c */
u8 res1[4]; /* 0x20 */
u32 lcr; /* 0x24 */
u32 dmcr; /* 0x28 */
u32 cmd; /* 0x2c */
u32 devaddr; /* 0x30 */
};
#define RSB_CTRL_SOFT_RST (1 << 0)
#define RSB_CTRL_START_TRANS (1 << 7)
#define RSB_STAT_TOVER_INT (1 << 0)
#define RSB_STAT_TERR_INT (1 << 1)
#define RSB_STAT_LBSY_INT (1 << 2)
#define RSB_DMCR_DEVICE_MODE_DATA 0x7c3e00
#define RSB_DMCR_DEVICE_MODE_START (1 << 31)
#define RSB_CMD_BYTE_WRITE 0x4e
#define RSB_CMD_BYTE_READ 0x8b
#define RSB_CMD_SET_RTSADDR 0xe8
#define RSB_DEVADDR_RUNTIME_ADDR(x) ((x) << 16)
#define RSB_DEVADDR_DEVICE_ADDR(x) ((x) << 0)
int rsb_init(void);
int rsb_set_device_address(u16 device_addr, u16 runtime_addr);
int rsb_write(const u16 runtime_device_addr, const u8 reg_addr, u8 data);
int rsb_read(const u16 runtime_device_addr, const u8 reg_addr, u8 *data);
#endif
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