Problem about i2c driver and test

[Altera_Forum]

I add opencore i2c to Nios II, and tested by i2ctools under uClinux( Microtronix nios2linux 1.4) 

 1.  3 chips in /dev/i2c-0  _________ typical read (they are different) EEPROM_: S Addr Wr [A] Reg_addr [A]______________S Addr Rd [A] [Data] A.......[Data] NA P FRAM___: S Addr Wr [A] Reg_addr_H [A] Reg_addr_L [A] S Addr Rd [A] [Data] A.......[Data] NA P Realtime : S Addr Rd [A] _____________________________________[Data] A.......[Data] NA P   2. Here is the result of i2cdetect  0 1 2 3 4 5 6 7 8 9 a b c d e f 00: XX XX XX XX XX XX XX XX XX XX XX XX XX 10: XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX 20: XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX 30: 30 31 32 33 34 35 36 37 XX XX XX XX XX XX XX XX 40: XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX 50: 50 51 XX XX XX XX XX XX XX XX XX XX XX XX XX XX 60: XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX 70: XX XX XX XX XX XX XX XX  which indicates the adress of them correctly: EEPROM : 50 FRAM : 51 Realtimer : 30---37  3. problem 3.1   I see only "ioctl" in i2ctools. Could I using "read" "write" method? (As the compiler tells me errors in : #include <linux/i2c.h># include <linux/i2c-dev.h> 3.2  How can I access 3-different types of i2c chips via oc-i2c drivers?

[Altera_Forum]

Could I modify i2c-oc.c and i2c-algo-oc.c to implement or add new 3 i2c-eeprom.c, i2c-fram.c and i2c-realtime.c ?

[Altera_Forum]

<div class='quotetop'>QUOTE </div> 

--- Quote Start ---  I see only "ioctl" in i2ctools. Could I using "read" "write" method?[/b]  --- Quote End ---   you can use ioctl to read/write those devices, the command you need is I2C_RDWR.   <div class='quotetop'>QUOTE </div>  --- Quote Start ---  How can I access 3-different types of i2c chips via oc-i2c drivers?[/b]  --- Quote End ---   You can have different utilities. The device address is specified in the message passed with this ioctl command.    <div class='quotetop'>QUOTE </div>  --- Quote Start ---  Could I modify i2c-oc.c and i2c-algo-oc.c to implement or add new 3 i2c-eeprom.c, i2c-fram.c and i2c-realtime.c[/b]  --- Quote End ---   If your kernel does not utilize those devices, you don&#39;t have to implement something in kernel.