mirror of https://gitlab.com/qemu-project/qemu
71 lines
1.7 KiB
C
71 lines
1.7 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(I2CAdapter *i2c, uint8_t addr,
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const uint8_t *buf, uint16_t len)
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{
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i2c->send(i2c, addr, buf, len);
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}
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void i2c_recv(I2CAdapter *i2c, uint8_t addr,
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uint8_t *buf, uint16_t len)
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{
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i2c->recv(i2c, addr, buf, len);
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}
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void i2c_read_block(I2CAdapter *i2c, uint8_t addr, uint8_t reg,
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uint8_t *buf, uint16_t len)
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{
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i2c_send(i2c, addr, ®, 1);
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i2c_recv(i2c, addr, buf, len);
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}
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void i2c_write_block(I2CAdapter *i2c, uint8_t addr, 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(i2c, addr, cmd, len + 1);
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g_free(cmd);
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}
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uint8_t i2c_get8(I2CAdapter *i2c, uint8_t addr, uint8_t reg)
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{
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uint8_t resp[1];
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i2c_read_block(i2c, addr, reg, resp, sizeof(resp));
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return resp[0];
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}
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uint16_t i2c_get16(I2CAdapter *i2c, uint8_t addr, uint8_t reg)
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{
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uint8_t resp[2];
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i2c_read_block(i2c, addr, 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(I2CAdapter *i2c, uint8_t addr, uint8_t reg,
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uint8_t value)
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{
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i2c_write_block(i2c, addr, reg, &value, 1);
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}
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void i2c_set16(I2CAdapter *i2c, uint8_t addr, uint8_t reg,
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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(i2c, addr, reg, data, sizeof(data));
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}
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