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