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
  15 typedef struct I2CAdapter I2CAdapter;
  16 struct 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
  25 typedef struct QI2CAddress QI2CAddress;
  26 struct QI2CAddress {
  27     uint8_t addr;
  28 };
  29
  30 typedef struct QI2CDevice QI2CDevice;
  31 struct 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
  47 void *i2c_device_create(void *i2c_bus, QGuestAllocator *alloc, void *addr);
  48 void add_qi2c_address(QOSGraphEdgeOptions *opts, QI2CAddress *addr);
  49
  50 void i2c_send(QI2CDevice *dev, const uint8_t *buf, uint16_t len);
  51 void i2c_recv(QI2CDevice *dev, uint8_t *buf, uint16_t len);
  52
  53 void i2c_read_block(QI2CDevice *dev, uint8_t reg,
  54                     uint8_t *buf, uint16_t len);
  55 void i2c_write_block(QI2CDevice *dev, uint8_t reg,
  56                      const uint8_t *buf, uint16_t len);
  57 uint8_t i2c_get8(QI2CDevice *dev, uint8_t reg);
  58 uint16_t i2c_get16(QI2CDevice *dev, uint8_t reg);
  59 void i2c_set8(QI2CDevice *dev, uint8_t reg, uint8_t value);
  60 void i2c_set16(QI2CDevice *dev, uint8_t reg, uint16_t value);
  61
  62 /* i2c-omap.c */
  63 typedef struct OMAPI2C {
  64     QOSGraphObject obj;
  65     I2CAdapter parent;
  66
  67     uint64_t addr;
  68 } OMAPI2C;
  69
  70 void omap_i2c_init(OMAPI2C *s, QTestState *qts, uint64_t addr);
  71
  72 /* i2c-imx.c */
  73 typedef struct IMXI2C {
  74     QOSGraphObject obj;
  75     I2CAdapter parent;
  76
  77     uint64_t addr;
  78 } IMXI2C;
  79
  80 void imx_i2c_init(IMXI2C *s, QTestState *qts, uint64_t addr);
  81
  82 #endif