06599472ec
This removes the hardcoded I2C address from the tests. The address is passed via QOSGraphEdgeOptions to i2c_device_create and stored in the QI2CDevice. The i2c_send and i2c_recv functions, along with their wrappers, therefore, can be changed to take a QI2CDevice rather than an adapter/address pair. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
86 lines
1.9 KiB
C
86 lines
1.9 KiB
C
/*
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* QTest I2C driver
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*
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* Copyright (c) 2012 Andreas Färber
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or later.
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* See the COPYING file in the top-level directory.
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*/
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#include "qemu/osdep.h"
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#include "libqos/i2c.h"
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#include "libqtest.h"
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void i2c_send(QI2CDevice *i2cdev, const uint8_t *buf, uint16_t len)
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{
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i2cdev->bus->send(i2cdev->bus, i2cdev->addr, buf, len);
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}
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void i2c_recv(QI2CDevice *i2cdev, uint8_t *buf, uint16_t len)
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{
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i2cdev->bus->recv(i2cdev->bus, i2cdev->addr, buf, len);
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}
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void i2c_read_block(QI2CDevice *i2cdev, uint8_t reg,
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uint8_t *buf, uint16_t len)
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{
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i2c_send(i2cdev, ®, 1);
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i2c_recv(i2cdev, buf, len);
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}
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void i2c_write_block(QI2CDevice *i2cdev, uint8_t reg,
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const uint8_t *buf, uint16_t len)
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{
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uint8_t *cmd = g_malloc(len + 1);
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cmd[0] = reg;
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memcpy(&cmd[1], buf, len);
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i2c_send(i2cdev, cmd, len + 1);
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g_free(cmd);
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}
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uint8_t i2c_get8(QI2CDevice *i2cdev, uint8_t reg)
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{
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uint8_t resp[1];
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i2c_read_block(i2cdev, reg, resp, sizeof(resp));
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return resp[0];
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}
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uint16_t i2c_get16(QI2CDevice *i2cdev, uint8_t reg)
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{
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uint8_t resp[2];
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i2c_read_block(i2cdev, reg, resp, sizeof(resp));
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return (resp[0] << 8) | resp[1];
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}
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void i2c_set8(QI2CDevice *i2cdev, uint8_t reg, uint8_t value)
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{
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i2c_write_block(i2cdev, reg, &value, 1);
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}
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void i2c_set16(QI2CDevice *i2cdev, uint8_t reg, uint16_t value)
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{
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uint8_t data[2];
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data[0] = value >> 8;
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data[1] = value & 255;
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i2c_write_block(i2cdev, reg, data, sizeof(data));
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}
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void *i2c_device_create(void *i2c_bus, QGuestAllocator *alloc, void *addr)
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{
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QI2CDevice *i2cdev = g_new0(QI2CDevice, 1);
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i2cdev->bus = i2c_bus;
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if (addr) {
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i2cdev->addr = ((QI2CAddress *)addr)->addr;
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}
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return &i2cdev->obj;
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}
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void add_qi2c_address(QOSGraphEdgeOptions *opts, QI2CAddress *addr)
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{
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g_assert(addr);
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opts->arg = addr;
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opts->size_arg = sizeof(QI2CAddress);
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}
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