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qtest: Add functions for accessing devices on Aspeed I2C controller

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Add read and write functions for accessing registers of I2C devices
connected to the Aspeed I2C controller.

Signed-off-by: Stefan Berger <stefanb@linux.ibm.com>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Reviewed-by: Ninad Palsule <ninad@linux.ibm.com>
Message-Id: <20230331173051.3857801-2-stefanb@linux.ibm.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
This commit is contained in:
Stefan Berger 2023-03-31 13:30:49 -04:00 • committed by Thomas Huth
parent 2243299a74
commit a3ebb580a2
3 changed files with 165 additions and 0 deletions
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41
tests/qtest/qtest_aspeed.h Normal file
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/*
* Aspeed i2c bus interface to reading and writing to i2c device registers
*
* Copyright (c) 2023 IBM Corporation
*
* Authors:
* Stefan Berger <stefanb@linux.ibm.com>
*
* This work is licensed under the terms of the GNU GPL, version 2 or later.
* See the COPYING file in the top-level directory.
*/
#ifndef QTEST_ASPEED_H
#define QTEST_ASPEED_H
#include <stdint.h>
#include "libqtest.h"
#define AST2600_ASPEED_I2C_BASE_ADDR 0x1e78a000
/* Implements only AST2600 I2C controller */
static inline uint32_t ast2600_i2c_calc_bus_addr(uint8_t bus_num)
{
return AST2600_ASPEED_I2C_BASE_ADDR + 0x80 + bus_num * 0x80;
}
uint8_t aspeed_i2c_readb(QTestState *s,
uint32_t baseaddr, uint8_t slave_addr, uint8_t reg);
uint16_t aspeed_i2c_readw(QTestState *s,
uint32_t baseaddr, uint8_t slave_addr, uint8_t reg);
uint32_t aspeed_i2c_readl(QTestState *s,
uint32_t baseaddr, uint8_t slave_addr, uint8_t reg);
void aspeed_i2c_writeb(QTestState *s, uint32_t baseaddr, uint8_t slave_addr,
uint8_t reg, uint8_t v);
void aspeed_i2c_writew(QTestState *s, uint32_t baseaddr, uint8_t slave_addr,
uint8_t reg, uint16_t v);
void aspeed_i2c_writel(QTestState *s, uint32_t baseaddr, uint8_t slave_addr,
uint8_t reg, uint32_t v);
#endif