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typedef struct I2Cbus I2Cbus;
struct I2Cbus
{
char *name;
int speed;
void *ctlr;
int (*init)(I2Cbus *bus);
int (*io)(I2Cbus *bus, uchar *pkt, int olen, int ilen);
int probed;
QLock;
};
typedef struct I2Cdev I2Cdev;
struct I2Cdev
{
I2Cbus *bus;
int a10;
int addr;
int subaddr;
ulong size;
};
/*
* Register busses (controllers) and devices (addresses)
*/
extern void addi2cbus(I2Cbus *bus);
extern void addi2cdev(I2Cdev *dev);
/*
* Look-up busses and devices by name and address
*/
extern I2Cbus* i2cbus(char *name);
extern I2Cdev* i2cdev(I2Cbus *bus, int addr);
/*
* generic I/O
*/
extern int i2cbusio(I2Cbus *bus, uchar *pkt, int olen, int ilen);
extern int i2crecv(I2Cdev *dev, void *data, int len, vlong addr);
extern int i2csend(I2Cdev *dev, void *data, int len, vlong addr);
/*
* common I/O for SMbus
*/
extern int i2cquick(I2Cdev *dev, int rw);
extern int i2crecvbyte(I2Cdev *dev);
extern int i2csendbyte(I2Cdev *dev, uchar b);
extern int i2creadbyte(I2Cdev *dev, ulong addr);
extern int i2cwritebyte(I2Cdev *dev, ulong addr, uchar b);
extern int i2creadword(I2Cdev *dev, ulong addr);
extern int i2cwriteword(I2Cdev *dev, ulong addr, ushort w);
extern vlong i2cread32(I2Cdev *dev, ulong addr);
extern vlong i2cwrite32(I2Cdev *dev, ulong addr, ulong u);
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