workbench/hidds/i2c/i2c.h

   1 #ifndef _I2C_H
   2 #define _I2C_H
   3
   4 /*
   5     Copyright © 2004, The AROS Development Team. All rights reserved.
   6     $Id$
   7 */
   8
   9 #include <exec/types.h>
  10 #include <exec/libraries.h>
  11 #include <exec/execbase.h>
  12 #include <exec/nodes.h>
  13 #include <exec/lists.h>
  14 #include <exec/semaphores.h>
  15 #include <dos/bptr.h>
  16
  17 #include <devices/timer.h>
  18
  19 #include <aros/libcall.h>
  20 #include <aros/asmcall.h>
  21
  22 #include <oop/oop.h>
  23
  24 #include <aros/arossupportbase.h>
  25 #include <exec/execbase.h>
  26
  27 #include LC_LIBDEFS_FILE
  28
  29 /* Private data and structures unavailable outside the i2c base classes */
  30
  31 typedef struct DevInstData {
  32     OOP_Object  *driver;
  33     STRPTR      name;
  34     UWORD       address;
  35     ULONG   HoldTime;
  36     ULONG   BitTimeout;
  37     ULONG   ByteTimeout;
  38     ULONG   AcknTimeout;
  39     ULONG   StartTimeout;
  40     ULONG   RiseFallTime;
  41 } tDevData;
  42
  43 typedef struct DrvInstData {
  44     struct SignalSemaphore  driver_lock;
  45
  46     struct MinList          devices;
  47
  48     struct MsgPort          mp;
  49     struct timerequest      tr;
  50
  51     STRPTR          name;
  52
  53     ULONG           HoldTime;
  54     ULONG           BitTimeout;
  55     ULONG           ByteTimeout;
  56     ULONG           AcknTimeout;
  57     ULONG           StartTimeout;
  58     ULONG           RiseFallTime;
  59 } tDrvData;
  60
  61 struct i2c_staticdata {
  62     OOP_AttrBase        hiddAB;
  63     OOP_AttrBase        hiddI2CAB;
  64     OOP_AttrBase        hiddI2CDeviceAB;
  65
  66     OOP_Class           *i2cClass;
  67     OOP_Class           *i2cDeviceClass;
  68
  69     OOP_MethodID    mid_I2C_Start;
  70     OOP_MethodID    mid_I2C_Stop;
  71     OOP_MethodID    mid_I2C_PutBits;
  72     OOP_MethodID    mid_I2C_GetBits;
  73     OOP_MethodID    mid_I2C_PutByte;
  74     OOP_MethodID    mid_I2C_GetByte;
  75     OOP_MethodID    mid_I2C_Address;
  76     OOP_MethodID    mid_I2C_WriteRead;
  77
  78 };
  79
  80 struct i2cbase {
  81     struct Library                  LibNode;
  82     APTR                                MemPool;
  83     struct i2c_staticdata       sd;
  84 };
  85
  86 #define BASE(lib) ((struct i2cbase*)(lib))
  87
  88 #define SD(cl) (&BASE(cl->UserData)->sd)
  89
  90 #define METHOD(base, id, name) \
  91   base ## __ ## id ## __ ## name (OOP_Class *cl, OOP_Object *o, struct p ## id ## _ ## name *msg)
  92
  93
  94 #define LOCK_HW     ObtainSemaphore(&drv->driver_lock);
  95 #define UNLOCK_HW   ReleaseSemaphore(&drv->driver_lock);
  96
  97 #define I2C_Start(__o, __timeout) \
  98     ({ \
  99         struct pHidd_I2C_Start __p, *__m=&__p;    \
 100         if (!SD(cl)->mid_I2C_Start)               \
 101             SD(cl)->mid_I2C_Start = OOP_GetMethodID((STRPTR)IID_Hidd_I2C, moHidd_I2C_Start);    \
 102         __p.mID   = SD(cl)->mid_I2C_Start;        \
 103         __p.timeout = (__timeout);                        \
 104         OOP_DoMethod((__o), (OOP_Msg)__m);          \
 105     })
 106
 107 #define I2C_Stop(__o, __device) \
 108     ({ \
 109         struct pHidd_I2C_Stop __p, *__m=&__p;    \
 110         if (!SD(cl)->mid_I2C_Stop)               \
 111             SD(cl)->mid_I2C_Stop = OOP_GetMethodID((STRPTR)IID_Hidd_I2C, moHidd_I2C_Stop);    \
 112         __p.mID   = SD(cl)->mid_I2C_Stop;        \
 113         __p.device = (__device);                        \
 114         OOP_DoMethod((__o), (OOP_Msg)__m);          \
 115     })
 116
 117 #define I2C_PutBits(__o, __scl, __sda) \
 118     ({ \
 119         struct pHidd_I2C_PutBits __p, *__m=&__p;    \
 120         if (!SD(cl)->mid_I2C_PutBits)               \
 121             SD(cl)->mid_I2C_PutBits = OOP_GetMethodID((STRPTR)IID_Hidd_I2C, moHidd_I2C_PutBits);    \
 122         __p.mID   = SD(cl)->mid_I2C_PutBits;        \
 123         __p.scl   = (__scl);                        \
 124         __p.sda   = (__sda);                        \
 125         OOP_DoMethod((__o), (OOP_Msg)__m);          \
 126     })
 127
 128 #define I2C_PutByte(__o, __device, __byte) \
 129     ({ \
 130         struct pHidd_I2C_PutByte __p, *__m=&__p;    \
 131         if (!SD(cl)->mid_I2C_PutByte)               \
 132             SD(cl)->mid_I2C_PutByte = OOP_GetMethodID((STRPTR)IID_Hidd_I2C, moHidd_I2C_PutByte);    \
 133         __p.mID   = SD(cl)->mid_I2C_PutByte;        \
 134         __p.data   = (__byte);                        \
 135         __p.device   = (__device);                        \
 136         OOP_DoMethod((__o), (OOP_Msg)__m);          \
 137     })
 138
 139 #define I2C_GetByte(__o, __device, __byte, __last) \
 140     ({ \
 141         struct pHidd_I2C_GetByte __p, *__m=&__p;    \
 142         if (!SD(cl)->mid_I2C_GetByte)               \
 143             SD(cl)->mid_I2C_GetByte = OOP_GetMethodID((STRPTR)IID_Hidd_I2C, moHidd_I2C_GetByte);    \
 144         __p.mID   = SD(cl)->mid_I2C_GetByte;        \
 145         __p.data   = (__byte);                        \
 146         __p.last   = (__last);                        \
 147         __p.device   = (__device);                        \
 148         OOP_DoMethod((__o), (OOP_Msg)__m);          \
 149     })
 150
 151 #define I2C_GetBits(__o, __scl, __sda) \
 152     ({ \
 153         struct pHidd_I2C_GetBits __p, *__m=&__p;    \
 154         if (!SD(cl)->mid_I2C_GetBits)               \
 155             SD(cl)->mid_I2C_GetBits = OOP_GetMethodID((STRPTR)IID_Hidd_I2C, moHidd_I2C_GetBits);    \
 156         __p.mID   = SD(cl)->mid_I2C_GetBits;        \
 157         __p.scl   = (__scl);                        \
 158         __p.sda   = (__sda);                        \
 159         OOP_DoMethod((__o), (OOP_Msg)__m);          \
 160     })
 161
 162 #define I2C_Address(__o, __device, __addr) \
 163     ({ \
 164         struct pHidd_I2C_Address __p, *__m=&__p;    \
 165         if (!SD(cl)->mid_I2C_Address)               \
 166             SD(cl)->mid_I2C_Address = OOP_GetMethodID((STRPTR)IID_Hidd_I2C, moHidd_I2C_Address);    \
 167         __p.mID   = SD(cl)->mid_I2C_Address;        \
 168         __p.address  = (__addr);                        \
 169         __p.device   = (__device);                        \
 170         OOP_DoMethod((__o), (OOP_Msg)__m);          \
 171     })
 172
 173 #define I2C_WriteRead(__o, __device, __wb, __wl, __rb, __rl) \
 174     ({ \
 175         struct pHidd_I2C_WriteRead __p, *__m=&__p;    \
 176         if (!SD(cl)->mid_I2C_WriteRead)               \
 177             SD(cl)->mid_I2C_WriteRead = OOP_GetMethodID((STRPTR)IID_Hidd_I2C, moHidd_I2C_WriteRead);    \
 178         __p.mID   = SD(cl)->mid_I2C_WriteRead;        \
 179         __p.device   = (__device);                        \
 180         __p.writeBuffer = (__wb);   \
 181         __p.writeLength = (__wl);   \
 182         __p.readBuffer = (__rb);   \
 183         __p.readLength = (__rl);   \
 184         OOP_DoMethod((__o), (OOP_Msg)__m);          \
 185     })
 186
 187
 188 #endif /* _I2C_H */
 189