1*a3ebb580SStefan Berger /*
2*a3ebb580SStefan Berger * Aspeed i2c bus interface to reading and writing to i2c device registers
3*a3ebb580SStefan Berger *
4*a3ebb580SStefan Berger * Copyright (c) 2023 IBM Corporation
5*a3ebb580SStefan Berger *
6*a3ebb580SStefan Berger * Authors:
7*a3ebb580SStefan Berger * Stefan Berger <stefanb@linux.ibm.com>
8*a3ebb580SStefan Berger *
9*a3ebb580SStefan Berger * This work is licensed under the terms of the GNU GPL, version 2 or later.
10*a3ebb580SStefan Berger * See the COPYING file in the top-level directory.
11*a3ebb580SStefan Berger */
12*a3ebb580SStefan Berger #ifndef QTEST_ASPEED_H
13*a3ebb580SStefan Berger #define QTEST_ASPEED_H
14*a3ebb580SStefan Berger
15*a3ebb580SStefan Berger #include "libqtest.h"
16*a3ebb580SStefan Berger
17*a3ebb580SStefan Berger #define AST2600_ASPEED_I2C_BASE_ADDR 0x1e78a000
18*a3ebb580SStefan Berger
19*a3ebb580SStefan Berger /* Implements only AST2600 I2C controller */
20*a3ebb580SStefan Berger
ast2600_i2c_calc_bus_addr(uint8_t bus_num)21*a3ebb580SStefan Berger static inline uint32_t ast2600_i2c_calc_bus_addr(uint8_t bus_num)
22*a3ebb580SStefan Berger {
23*a3ebb580SStefan Berger return AST2600_ASPEED_I2C_BASE_ADDR + 0x80 + bus_num * 0x80;
24*a3ebb580SStefan Berger }
25*a3ebb580SStefan Berger
26*a3ebb580SStefan Berger uint8_t aspeed_i2c_readb(QTestState *s,
27*a3ebb580SStefan Berger uint32_t baseaddr, uint8_t slave_addr, uint8_t reg);
28*a3ebb580SStefan Berger uint16_t aspeed_i2c_readw(QTestState *s,
29*a3ebb580SStefan Berger uint32_t baseaddr, uint8_t slave_addr, uint8_t reg);
30*a3ebb580SStefan Berger uint32_t aspeed_i2c_readl(QTestState *s,
31*a3ebb580SStefan Berger uint32_t baseaddr, uint8_t slave_addr, uint8_t reg);
32*a3ebb580SStefan Berger void aspeed_i2c_writeb(QTestState *s, uint32_t baseaddr, uint8_t slave_addr,
33*a3ebb580SStefan Berger uint8_t reg, uint8_t v);
34*a3ebb580SStefan Berger void aspeed_i2c_writew(QTestState *s, uint32_t baseaddr, uint8_t slave_addr,
35*a3ebb580SStefan Berger uint8_t reg, uint16_t v);
36*a3ebb580SStefan Berger void aspeed_i2c_writel(QTestState *s, uint32_t baseaddr, uint8_t slave_addr,
37*a3ebb580SStefan Berger uint8_t reg, uint32_t v);
38*a3ebb580SStefan Berger
39*a3ebb580SStefan Berger #endif
40