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/*
* I2C libqos
*
* 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.
*/
#ifndef LIBQOS_I2C_H
#define LIBQOS_I2C_H
#include "libqtest.h"
#include "qgraph.h"
typedef struct I2CAdapter I2CAdapter;
struct I2CAdapter {
void (*send)(I2CAdapter *adapter, uint8_t addr,
const uint8_t *buf, uint16_t len);
void (*recv)(I2CAdapter *adapter, uint8_t addr,
uint8_t *buf, uint16_t len);
QTestState *qts;
};
typedef struct QI2CAddress QI2CAddress;
struct QI2CAddress {
uint8_t addr;
};
typedef struct QI2CDevice QI2CDevice;
struct QI2CDevice {
/*
* For now, all devices are simple enough that there is no need for
* them to define their own constructor and get_driver functions.
* Therefore, QOSGraphObject is included directly in QI2CDevice;
* the tests expect to get a QI2CDevice rather than doing something
* like obj->get_driver("i2c-device").
*
* In fact there is no i2c-device interface even, because there are
* no generic I2C tests).
*/
QOSGraphObject obj;
I2CAdapter *bus;
uint8_t addr;
};
void *i2c_device_create(void *i2c_bus, QGuestAllocator *alloc, void *addr);
void add_qi2c_address(QOSGraphEdgeOptions *opts, QI2CAddress *addr);
void qi2c_send(QI2CDevice *dev, const uint8_t *buf, uint16_t len);
void qi2c_recv(QI2CDevice *dev, uint8_t *buf, uint16_t len);
void i2c_read_block(QI2CDevice *dev, uint8_t reg,
uint8_t *buf, uint16_t len);
void i2c_write_block(QI2CDevice *dev, uint8_t reg,
const uint8_t *buf, uint16_t len);
uint8_t i2c_get8(QI2CDevice *dev, uint8_t reg);
uint16_t i2c_get16(QI2CDevice *dev, uint8_t reg);
void i2c_set8(QI2CDevice *dev, uint8_t reg, uint8_t value);
void i2c_set16(QI2CDevice *dev, uint8_t reg, uint16_t value);
/* i2c-omap.c */
typedef struct OMAPI2C {
QOSGraphObject obj;
I2CAdapter parent;
uint64_t addr;
} OMAPI2C;
void omap_i2c_init(OMAPI2C *s, QTestState *qts, uint64_t addr);
/* i2c-imx.c */
typedef struct IMXI2C {
QOSGraphObject obj;
I2CAdapter parent;
uint64_t addr;
} IMXI2C;
void imx_i2c_init(IMXI2C *s, QTestState *qts, uint64_t addr);
#endif
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