| Hans de Goede | 66ebea0 | 2014-11-29 13:38:35 +0100 | [diff] [blame] | 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 |