mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
synced 2024-08-22 03:47:08 +03:00
[etrax] also include i2c driver inside 2.6.30
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@16679 3c298f89-4303-0410-b956-a3cf2f4a3e73
This commit is contained in:
parent
fe4503efb4
commit
73c8796fe7
@ -0,0 +1,49 @@
|
|||||||
|
#ifndef _LINUX_ETRAXI2C_H
|
||||||
|
#define _LINUX_ETRAXI2C_H
|
||||||
|
|
||||||
|
/* etraxi2c _IOC_TYPE, bits 8 to 15 in ioctl cmd */
|
||||||
|
|
||||||
|
#define ETRAXI2C_IOCTYPE 44
|
||||||
|
|
||||||
|
/* supported ioctl _IOC_NR's */
|
||||||
|
|
||||||
|
/* in write operations, the argument contains both i2c
|
||||||
|
* slave, register and value.
|
||||||
|
*/
|
||||||
|
|
||||||
|
#define I2C_WRITEARG(slave, reg, value) (((slave) << 16) | ((reg) << 8) | (value))
|
||||||
|
#define I2C_READARG(slave, reg) (((slave) << 16) | ((reg) << 8))
|
||||||
|
|
||||||
|
#define I2C_ARGSLAVE(arg) ((arg) >> 16)
|
||||||
|
#define I2C_ARGREG(arg) (((arg) >> 8) & 0xff)
|
||||||
|
#define I2C_ARGVALUE(arg) ((arg) & 0xff)
|
||||||
|
|
||||||
|
#define I2C_WRITEREG 0x1 /* write to an I2C register */
|
||||||
|
#define I2C_READREG 0x2 /* read from an I2C register */
|
||||||
|
|
||||||
|
/*
|
||||||
|
EXAMPLE usage:
|
||||||
|
|
||||||
|
i2c_arg = I2C_WRITEARG(STA013_WRITE_ADDR, reg, val);
|
||||||
|
ioctl(fd, _IO(ETRAXI2C_IOCTYPE, I2C_WRITEREG), i2c_arg);
|
||||||
|
|
||||||
|
i2c_arg = I2C_READARG(STA013_READ_ADDR, reg);
|
||||||
|
val = ioctl(fd, _IO(ETRAXI2C_IOCTYPE, I2C_READREG), i2c_arg);
|
||||||
|
|
||||||
|
*/
|
||||||
|
|
||||||
|
/* Extended part */
|
||||||
|
#define I2C_READ 0x4 /* reads from I2C device */
|
||||||
|
#define I2C_WRITE 0x3 /* writes to I2C device */
|
||||||
|
#define I2C_WRITEREAD 0x5 /* writes to I2C device where to start reading */
|
||||||
|
|
||||||
|
typedef struct _I2C_DATA
|
||||||
|
{
|
||||||
|
unsigned char slave; /* I2C address (8-bit representation) of slave device */
|
||||||
|
unsigned char wbuf[256]; /* Write buffer (length = 256 bytes) */
|
||||||
|
unsigned int wlen; /* Number of bytes to write from wbuf[] */
|
||||||
|
unsigned char rbuf[256]; /* Read buffer (length = 256 bytes) */
|
||||||
|
unsigned int rlen; /* Number of bytes to read into rbuf[] */
|
||||||
|
} I2C_DATA;
|
||||||
|
|
||||||
|
#endif
|
@ -0,0 +1,20 @@
|
|||||||
|
#ifndef _I2C_ERRNO_H
|
||||||
|
#define _I2C_ERRNO_H
|
||||||
|
|
||||||
|
#define EI2CNOERRORS 0 /* All fine */
|
||||||
|
#define EI2CBUSNFREE 1 /* I2C bus not free */
|
||||||
|
#define EI2CWADDRESS 2 /* Address write failed */
|
||||||
|
#define EI2CRADDRESS 3 /* Address read failed */
|
||||||
|
#define EI2CSENDDATA 4 /* Sending data failed */
|
||||||
|
#define EI2CRECVDATA 5 /* Receiving data failed */
|
||||||
|
#define EI2CSTRTCOND 6 /* Start condition failed */
|
||||||
|
#define EI2CRSTACOND 7 /* Repeated start condition failed */
|
||||||
|
#define EI2CSTOPCOND 8 /* Stop condition failed */
|
||||||
|
#define EI2CNOSNDBYT 9 /* Number of send bytes is 0, while there's a send buffer defined */
|
||||||
|
#define EI2CNOSNDBUF 10 /* No send buffer defined, while number of send bytes is not 0 */
|
||||||
|
#define EI2CNORCVBYT 11 /* Number of receive bytes is 0, while there's a receive buffer defined */
|
||||||
|
#define EI2CNORCVBUF 12 /* No receive buffer defined, while number of receive bytes is not 0 */
|
||||||
|
#define EI2CNOACKNLD 13 /* No acknowledge received from slave */
|
||||||
|
#define EI2CNOMNUMBR 14 /* No MAJOR number received from kernel while registering the device */
|
||||||
|
|
||||||
|
#endif /* _I2C_ERRNO_H */
|
1315
target/linux/etrax/files-2.6.30/arch/cris/arch-v10/drivers/i2c_gvc.c
Normal file
1315
target/linux/etrax/files-2.6.30/arch/cris/arch-v10/drivers/i2c_gvc.c
Normal file
File diff suppressed because it is too large
Load Diff
@ -0,0 +1,30 @@
|
|||||||
|
#ifndef _I2C_H
|
||||||
|
#define _I2C_H
|
||||||
|
|
||||||
|
int i2c_init(void);
|
||||||
|
|
||||||
|
/* High level I2C actions */
|
||||||
|
int i2c_writereg(unsigned char theSlave, unsigned char theReg, unsigned char theValue);
|
||||||
|
unsigned char i2c_readreg(unsigned char theSlave, unsigned char theReg);
|
||||||
|
|
||||||
|
/* Low level I2C */
|
||||||
|
int i2c_start(void);
|
||||||
|
int i2c_stop(void);
|
||||||
|
int i2c_outbyte(unsigned char x);
|
||||||
|
unsigned char i2c_inbyte(void);
|
||||||
|
int i2c_getack(void);
|
||||||
|
void i2c_sendack(void);
|
||||||
|
void i2c_sendnack(void);
|
||||||
|
|
||||||
|
/**GVC**/
|
||||||
|
/* New low level I2C functions */
|
||||||
|
int i2c_read( unsigned char slave, unsigned char* rbuf, unsigned char rlen );
|
||||||
|
int i2c_write( unsigned char slave, unsigned char* wbuf, unsigned char wlen );
|
||||||
|
int i2c_writeread( unsigned char slave
|
||||||
|
, unsigned char* wbuf
|
||||||
|
, unsigned char wlen
|
||||||
|
, unsigned char* rbuf
|
||||||
|
, unsigned char rlen
|
||||||
|
);
|
||||||
|
/**END GVC**/
|
||||||
|
#endif /* _I2C_H */
|
Loading…
Reference in New Issue
Block a user