LXR qemu/tests/libqos/i2c.h

   1/*
   2 * I2C libqos
   3 *
   4 * Copyright (c) 2012 Andreas Färber
   5 *
   6 * This work is licensed under the terms of the GNU GPL, version 2 or later.
   7 * See the COPYING file in the top-level directory.
   8 */
   9#ifndef LIBQOS_I2C_H
  10#define LIBQOS_I2C_H
  11
  12#include "libqtest.h"
  13#include "libqos/qgraph.h"
  14
  15typedef struct I2CAdapter I2CAdapter;
  16struct I2CAdapter {
  17    void (*send)(I2CAdapter *adapter, uint8_t addr,
  18                 const uint8_t *buf, uint16_t len);
  19    void (*recv)(I2CAdapter *adapter, uint8_t addr,
  20                 uint8_t *buf, uint16_t len);
  21
  22    QTestState *qts;
  23};
  24
  25typedef struct QI2CAddress QI2CAddress;
  26struct QI2CAddress {
  27    uint8_t addr;
  28};
  29
  30typedef struct QI2CDevice QI2CDevice;
  31struct QI2CDevice {
  32    /*
  33     * For now, all devices are simple enough that there is no need for
  34     * them to define their own constructor and get_driver functions.
  35     * Therefore, QOSGraphObject is included directly in QI2CDevice;
  36     * the tests expect to get a QI2CDevice rather than doing something
  37     * like obj->get_driver("i2c-device").
  38     *
  39     * In fact there is no i2c-device interface even, because there are
  40     * no generic I2C tests).
  41     */
  42    QOSGraphObject obj;
  43    I2CAdapter *bus;
  44    uint8_t addr;
  45};
  46
  47void *i2c_device_create(void *i2c_bus, QGuestAllocator *alloc, void *addr);
  48void add_qi2c_address(QOSGraphEdgeOptions *opts, QI2CAddress *addr);
  49
  50void i2c_send(QI2CDevice *dev, const uint8_t *buf, uint16_t len);
  51void i2c_recv(QI2CDevice *dev, uint8_t *buf, uint16_t len);
  52
  53void i2c_read_block(QI2CDevice *dev, uint8_t reg,
  54                    uint8_t *buf, uint16_t len);
  55void i2c_write_block(QI2CDevice *dev, uint8_t reg,
  56                     const uint8_t *buf, uint16_t len);
  57uint8_t i2c_get8(QI2CDevice *dev, uint8_t reg);
  58uint16_t i2c_get16(QI2CDevice *dev, uint8_t reg);
  59void i2c_set8(QI2CDevice *dev, uint8_t reg, uint8_t value);
  60void i2c_set16(QI2CDevice *dev, uint8_t reg, uint16_t value);
  61
  62/* i2c-omap.c */
  63typedef struct OMAPI2C {
  64    QOSGraphObject obj;
  65    I2CAdapter parent;
  66
  67    uint64_t addr;
  68} OMAPI2C;
  69
  70void omap_i2c_init(OMAPI2C *s, QTestState *qts, uint64_t addr);
  71
  72/* i2c-imx.c */
  73typedef struct IMXI2C {
  74    QOSGraphObject obj;
  75    I2CAdapter parent;
  76
  77    uint64_t addr;
  78} IMXI2C;
  79
  80void imx_i2c_init(IMXI2C *s, QTestState *qts, uint64_t addr);
  81
  82#endif
  83