e8ecb706a8
The functions to read/write 8-bit or 16-bit registers are the same in tmp105 and pca9552 tests, and in fact they are a special case of "read block"/"write block" functionality; read block in turn is used in ds1338-test. Move everything inside libqos-test, removing the duplication. Account for the small differences by adding to tmp105-test.c the "read register after writing" behavior that is specific to it. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
71 lines
1.7 KiB
C
71 lines
1.7 KiB
C
/*
|
|
* QTest I2C driver
|
|
*
|
|
* Copyright (c) 2012 Andreas Färber
|
|
*
|
|
* This work is licensed under the terms of the GNU GPL, version 2 or later.
|
|
* See the COPYING file in the top-level directory.
|
|
*/
|
|
#include "qemu/osdep.h"
|
|
#include "libqos/i2c.h"
|
|
#include "libqtest.h"
|
|
|
|
void i2c_send(I2CAdapter *i2c, uint8_t addr,
|
|
const uint8_t *buf, uint16_t len)
|
|
{
|
|
i2c->send(i2c, addr, buf, len);
|
|
}
|
|
|
|
void i2c_recv(I2CAdapter *i2c, uint8_t addr,
|
|
uint8_t *buf, uint16_t len)
|
|
{
|
|
i2c->recv(i2c, addr, buf, len);
|
|
}
|
|
|
|
void i2c_read_block(I2CAdapter *i2c, uint8_t addr, uint8_t reg,
|
|
uint8_t *buf, uint16_t len)
|
|
{
|
|
i2c_send(i2c, addr, ®, 1);
|
|
i2c_recv(i2c, addr, buf, len);
|
|
}
|
|
|
|
void i2c_write_block(I2CAdapter *i2c, uint8_t addr, uint8_t reg,
|
|
const uint8_t *buf, uint16_t len)
|
|
{
|
|
uint8_t *cmd = g_malloc(len + 1);
|
|
cmd[0] = reg;
|
|
memcpy(&cmd[1], buf, len);
|
|
i2c_send(i2c, addr, cmd, len + 1);
|
|
g_free(cmd);
|
|
}
|
|
|
|
uint8_t i2c_get8(I2CAdapter *i2c, uint8_t addr, uint8_t reg)
|
|
{
|
|
uint8_t resp[1];
|
|
i2c_read_block(i2c, addr, reg, resp, sizeof(resp));
|
|
return resp[0];
|
|
}
|
|
|
|
uint16_t i2c_get16(I2CAdapter *i2c, uint8_t addr, uint8_t reg)
|
|
{
|
|
uint8_t resp[2];
|
|
i2c_read_block(i2c, addr, reg, resp, sizeof(resp));
|
|
return (resp[0] << 8) | resp[1];
|
|
}
|
|
|
|
void i2c_set8(I2CAdapter *i2c, uint8_t addr, uint8_t reg,
|
|
uint8_t value)
|
|
{
|
|
i2c_write_block(i2c, addr, reg, &value, 1);
|
|
}
|
|
|
|
void i2c_set16(I2CAdapter *i2c, uint8_t addr, uint8_t reg,
|
|
uint16_t value)
|
|
{
|
|
uint8_t data[2];
|
|
|
|
data[0] = value >> 8;
|
|
data[1] = value & 255;
|
|
i2c_write_block(i2c, addr, reg, data, sizeof(data));
|
|
}
|