1*17066e89SStefan Berger /*
2*17066e89SStefan Berger * Aspeed i2c bus interface to reading and writing to i2c device registers
3*17066e89SStefan Berger *
4*17066e89SStefan Berger * Copyright (c) 2023 IBM Corporation
5*17066e89SStefan Berger *
6*17066e89SStefan Berger * Authors:
7*17066e89SStefan Berger * Stefan Berger <stefanb@linux.ibm.com>
8*17066e89SStefan Berger *
9*17066e89SStefan Berger * This work is licensed under the terms of the GNU GPL, version 2 or later.
10*17066e89SStefan Berger * See the COPYING file in the top-level directory.
11*17066e89SStefan Berger */
12*17066e89SStefan Berger #ifndef QTEST_ASPEED_H
13*17066e89SStefan Berger #define QTEST_ASPEED_H
14*17066e89SStefan Berger
15*17066e89SStefan Berger #include <stdint.h>
16*17066e89SStefan Berger
17*17066e89SStefan Berger #include "libqtest.h"
18*17066e89SStefan Berger
19*17066e89SStefan Berger #define AST2600_ASPEED_I2C_BASE_ADDR 0x1e78a000
20*17066e89SStefan Berger
21*17066e89SStefan Berger /* Implements only AST2600 I2C controller */
22*17066e89SStefan Berger
ast2600_i2c_calc_bus_addr(uint8_t bus_num)23*17066e89SStefan Berger static inline uint32_t ast2600_i2c_calc_bus_addr(uint8_t bus_num)
24*17066e89SStefan Berger {
25*17066e89SStefan Berger return AST2600_ASPEED_I2C_BASE_ADDR + 0x80 + bus_num * 0x80;
26*17066e89SStefan Berger }
27*17066e89SStefan Berger
28*17066e89SStefan Berger uint8_t aspeed_i2c_readb(QTestState *s,
29*17066e89SStefan Berger uint32_t baseaddr, uint8_t slave_addr, uint8_t reg);
30*17066e89SStefan Berger uint16_t aspeed_i2c_readw(QTestState *s,
31*17066e89SStefan Berger uint32_t baseaddr, uint8_t slave_addr, uint8_t reg);
32*17066e89SStefan Berger uint32_t aspeed_i2c_readl(QTestState *s,
33*17066e89SStefan Berger uint32_t baseaddr, uint8_t slave_addr, uint8_t reg);
34*17066e89SStefan Berger void aspeed_i2c_writeb(QTestState *s, uint32_t baseaddr, uint8_t slave_addr,
35*17066e89SStefan Berger uint8_t reg, uint8_t v);
36*17066e89SStefan Berger void aspeed_i2c_writew(QTestState *s, uint32_t baseaddr, uint8_t slave_addr,
37*17066e89SStefan Berger uint8_t reg, uint16_t v);
38*17066e89SStefan Berger void aspeed_i2c_writel(QTestState *s, uint32_t baseaddr, uint8_t slave_addr,
39*17066e89SStefan Berger uint8_t reg, uint32_t v);
40*17066e89SStefan Berger
41*17066e89SStefan Berger #endif
42