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 QI2CDevice QI2CDevice;
  26 struct QI2CDevice {
  27     /*
  28      * For now, all devices are simple enough that there is no need for
  29      * them to define their own constructor and get_driver functions.
  30      * Therefore, QOSGraphObject is included directly in QI2CDevice;
  31      * the tests expect to get a QI2CDevice rather than doing something
  32      * like obj->get_driver("i2c-device").
  33      *
  34      * In fact there is no i2c-device interface even, because there are
  35      * no generic I2C tests).
  36      */
  37     QOSGraphObject obj;
  38     I2CAdapter *bus;
  39 };
  40
  41 void *i2c_device_create(void *i2c_bus, QGuestAllocator *alloc, void *addr);
  42
  43 void i2c_send(I2CAdapter *i2c, uint8_t addr,
  44               const uint8_t *buf, uint16_t len);
  45 void i2c_recv(I2CAdapter *i2c, uint8_t addr,
  46               uint8_t *buf, uint16_t len);
  47
  48 void i2c_read_block(I2CAdapter *i2c, uint8_t addr, uint8_t reg,
  49                     uint8_t *buf, uint16_t len);
  50 void i2c_write_block(I2CAdapter *i2c, uint8_t addr, uint8_t reg,
  51                      const uint8_t *buf, uint16_t len);
  52 uint8_t i2c_get8(I2CAdapter *i2c, uint8_t addr, uint8_t reg);
  53 uint16_t i2c_get16(I2CAdapter *i2c, uint8_t addr, uint8_t reg);
  54 void i2c_set8(I2CAdapter *i2c, uint8_t addr, uint8_t reg,
  55               uint8_t value);
  56 void i2c_set16(I2CAdapter *i2c, uint8_t addr, uint8_t reg,
  57                uint16_t value);
  58
  59 /* i2c-omap.c */
  60 typedef struct OMAPI2C {
  61     QOSGraphObject obj;
  62     I2CAdapter parent;
  63
  64     uint64_t addr;
  65 } OMAPI2C;
  66
  67 void omap_i2c_init(OMAPI2C *s, QTestState *qts, uint64_t addr);
  68
  69 /* i2c-imx.c */
  70 typedef struct IMXI2C {
  71     QOSGraphObject obj;
  72     I2CAdapter parent;
  73
  74     uint64_t addr;
  75 } IMXI2C;
  76
  77 void imx_i2c_init(IMXI2C *s, QTestState *qts, uint64_t addr);
  78 I2CAdapter *imx_i2c_create(QTestState *qts, uint64_t addr);
  79 void imx_i2c_free(I2CAdapter *i2c);
  80
  81 #endif