repositories / deb_xorg-server.git / blame
| Commit | Line | Data |
|---|---|---|
| a09e091a JB |
1 | /* |
| 2 | * Copyright (C) 1998 Itai Nahshon, Michael Schimek | |
| 3 | */ | |
| 4 | ||
| 5 | #ifndef _XF86I2C_H | |
| 6 | #define _XF86I2C_H | |
| 7 | ||
| 8 | #include "regionstr.h" | |
| 9 | #include "xf86.h" | |
| 10 | ||
| 11 | typedef unsigned char I2CByte; | |
| 12 | typedef unsigned short I2CSlaveAddr; | |
| 13 | ||
| 14 | typedef struct _I2CBusRec *I2CBusPtr; | |
| 15 | typedef struct _I2CDevRec *I2CDevPtr; | |
| 16 | ||
| 17 | /* I2C masters have to register themselves */ | |
| 18 | ||
| 19 | typedef struct _I2CBusRec { | |
| 20 | char *BusName; | |
| 21 | int scrnIndex; | |
| 22 | ScrnInfoPtr pScrn; | |
| 23 | ||
| 24 | void (*I2CUDelay) (I2CBusPtr b, int usec); | |
| 25 | ||
| 26 | void (*I2CPutBits) (I2CBusPtr b, int scl, int sda); | |
| 27 | void (*I2CGetBits) (I2CBusPtr b, int *scl, int *sda); | |
| 28 | ||
| 29 | /* Look at the generic routines to see how these functions should behave. */ | |
| 30 | ||
| 31 | Bool (*I2CStart) (I2CBusPtr b, int timeout); | |
| 32 | Bool (*I2CAddress) (I2CDevPtr d, I2CSlaveAddr); | |
| 33 | void (*I2CStop) (I2CDevPtr d); | |
| 34 | Bool (*I2CPutByte) (I2CDevPtr d, I2CByte data); | |
| 35 | Bool (*I2CGetByte) (I2CDevPtr d, I2CByte * data, Bool); | |
| 36 | ||
| 37 | DevUnion DriverPrivate; | |
| 38 | ||
| 39 | int HoldTime; /* 1 / bus clock frequency, 5 or 2 usec */ | |
| 40 | ||
| 41 | int BitTimeout; /* usec */ | |
| 42 | int ByteTimeout; /* usec */ | |
| 43 | int AcknTimeout; /* usec */ | |
| 44 | int StartTimeout; /* usec */ | |
| 45 | int RiseFallTime; /* usec */ | |
| 46 | ||
| 47 | I2CDevPtr FirstDev; | |
| 48 | I2CBusPtr NextBus; | |
| 49 | Bool (*I2CWriteRead) (I2CDevPtr d, I2CByte * WriteBuffer, int nWrite, | |
| 50 | I2CByte * ReadBuffer, int nRead); | |
| 51 | } I2CBusRec; | |
| 52 | ||
| 53 | #define CreateI2CBusRec xf86CreateI2CBusRec | |
| 54 | extern _X_EXPORT I2CBusPtr xf86CreateI2CBusRec(void); | |
| 55 | ||
| 56 | #define DestroyI2CBusRec xf86DestroyI2CBusRec | |
| 57 | extern _X_EXPORT void xf86DestroyI2CBusRec(I2CBusPtr pI2CBus, Bool unalloc, | |
| 58 | Bool devs_too); | |
| 59 | #define I2CBusInit xf86I2CBusInit | |
| 60 | extern _X_EXPORT Bool xf86I2CBusInit(I2CBusPtr pI2CBus); | |
| 61 | ||
| 62 | extern _X_EXPORT I2CBusPtr xf86I2CFindBus(int scrnIndex, char *name); | |
| 63 | extern _X_EXPORT int xf86I2CGetScreenBuses(int scrnIndex, | |
| 64 | I2CBusPtr ** pppI2CBus); | |
| 65 | ||
| 66 | /* I2C slave devices */ | |
| 67 | ||
| 68 | typedef struct _I2CDevRec { | |
| 69 | char *DevName; | |
| 70 | ||
| 71 | int BitTimeout; /* usec */ | |
| 72 | int ByteTimeout; /* usec */ | |
| 73 | int AcknTimeout; /* usec */ | |
| 74 | int StartTimeout; /* usec */ | |
| 75 | ||
| 76 | I2CSlaveAddr SlaveAddr; | |
| 77 | I2CBusPtr pI2CBus; | |
| 78 | I2CDevPtr NextDev; | |
| 79 | DevUnion DriverPrivate; | |
| 80 | } I2CDevRec; | |
| 81 | ||
| 82 | #define CreateI2CDevRec xf86CreateI2CDevRec | |
| 83 | extern _X_EXPORT I2CDevPtr xf86CreateI2CDevRec(void); | |
| 84 | extern _X_EXPORT void xf86DestroyI2CDevRec(I2CDevPtr pI2CDev, Bool unalloc); | |
| 85 | ||
| 86 | #define I2CDevInit xf86I2CDevInit | |
| 87 | extern _X_EXPORT Bool xf86I2CDevInit(I2CDevPtr pI2CDev); | |
| 88 | extern _X_EXPORT I2CDevPtr xf86I2CFindDev(I2CBusPtr, I2CSlaveAddr); | |
| 89 | ||
| 90 | /* See descriptions of these functions in xf86i2c.c */ | |
| 91 | ||
| 92 | #define I2CProbeAddress xf86I2CProbeAddress | |
| 93 | extern _X_EXPORT Bool xf86I2CProbeAddress(I2CBusPtr pI2CBus, I2CSlaveAddr); | |
| 94 | ||
| 95 | #define I2C_WriteRead xf86I2CWriteRead | |
| 96 | extern _X_EXPORT Bool xf86I2CWriteRead(I2CDevPtr d, I2CByte * WriteBuffer, | |
| 97 | int nWrite, I2CByte * ReadBuffer, | |
| 98 | int nRead); | |
| 99 | #define xf86I2CRead(d, rb, nr) xf86I2CWriteRead(d, NULL, 0, rb, nr) | |
| 100 | ||
| 101 | extern _X_EXPORT Bool xf86I2CReadStatus(I2CDevPtr d, I2CByte * pbyte); | |
| 102 | extern _X_EXPORT Bool xf86I2CReadByte(I2CDevPtr d, I2CByte subaddr, | |
| 103 | I2CByte * pbyte); | |
| 104 | extern _X_EXPORT Bool xf86I2CReadBytes(I2CDevPtr d, I2CByte subaddr, | |
| 105 | I2CByte * pbyte, int n); | |
| 106 | extern _X_EXPORT Bool xf86I2CReadWord(I2CDevPtr d, I2CByte subaddr, | |
| 107 | unsigned short *pword); | |
| 108 | #define xf86I2CWrite(d, wb, nw) xf86I2CWriteRead(d, wb, nw, NULL, 0) | |
| 109 | extern _X_EXPORT Bool xf86I2CWriteByte(I2CDevPtr d, I2CByte subaddr, | |
| 110 | I2CByte byte); | |
| 111 | extern _X_EXPORT Bool xf86I2CWriteBytes(I2CDevPtr d, I2CByte subaddr, | |
| 112 | I2CByte * WriteBuffer, int nWrite); | |
| 113 | extern _X_EXPORT Bool xf86I2CWriteWord(I2CDevPtr d, I2CByte subaddr, | |
| 114 | unsigned short word); | |
| 115 | extern _X_EXPORT Bool xf86I2CWriteVec(I2CDevPtr d, I2CByte * vec, int nValues); | |
| 116 | ||
| 117 | #endif /*_XF86I2C_H */ |