[U-Boot] i2c support for samsung s5pv310 in u-boot

[Avinash H.M.]

Hi Guys ,

I am working on a samsung SMDKv310 development kit.
I wanted to read a peripheral register (battery charger) in u-boot.
This device is interfaced on i2c0.

I wanted to do i2c_read in the code, but as i understand the i2c
support is not there in u-boot for s5pv310 SOCs.  Please confirm, if this
is correct or i am wrong.

If there is support to do i2c operations on s5pv310 SOCs, please point
me to the right file, where i can find i2c configurations for s5pv310 SOCs.

thanks,
- Avinash

PS:
1.  There are no i2c macros  in include/configs/smdkv310.h.
2.  After adding,below macros to enable i2c support for smdkv310,

/* I1C  */
#define CONFIG_HARD_I2C                 1
#define CONFIG_SYS_I2C_SPEED            100000
#define CONFIG_SYS_I2C_SLAVE            1
#define CONFIG_SYS_I2C_BUS              0
#define CONFIG_SYS_I2C_BUS_SELECT       1
#define CONFIG_I2C_MULTI_BUS            1

i get below error:
/media/data/avinash/c.labs/git.clones/bootloader/uboot/arch/arm/lib/board.c:189:
undefined reference to `i2c_init'
common/libcommon.o: In function `stdio_init':
/media/data/avinash/c.labs/git.clones/bootloader/uboot/common/stdio.c:215:
undefined reference to `i2c_init'

And there are no i2c related support inside the u-boot for samsung smdkv310.

avinash at avinash-desktop:/media/data/avinash/c.labs/git.clones/bootloader-new/uboot$
grep -inlr 'v310' . > v310.files.txt
avinash at avinash-desktop:/media/data/avinash/c.labs/git.clones/bootloader-new/uboot$
cat v310.files.txt | xargs grep -inr 'i2c_init'
Binary file ./uboot.PS matches
avinash at avinash-desktop:/media/data/avinash/c.labs/git.clones/bootloader-new/uboot$