[RFC] i2c-designware patches

Hi Baruch,

Baruch Siach wrote:

Your contribution to the implementation of transactions that are longer than 
the hardware buffers is very important. I wrote this code as a theoretical 
exercise, as I never had access to an i2c slave which requires long 
transactions. So I'm not surprised to find out that this code was broken.

Aa far as looking through the source code, I know that it's broken
without giving it a try with real DW I2C hardware ;-), but that'
not a big problem.

As said in the covermail, your initial work, namely i2c_dw_xfer(),
i2c_dw_xfer_msg(), and i2c_dw_read() is well-designed, this _is_
very important.  That makes further enhancements of DW I2C
transactions much easier, and makes me decide to post the patches.

For all these patches except no. 7 (Set a clock name to DesignWare I2C clock 
source) and no. 16 (Add I2C_FUNC_SMBUS_* bits) you have my

Acked-by: Baruch Siach <baruch@tkos.co.il>

Thanks, will do.

I added more 4-5 patches fixing transmit abort handling, and misc
updates all over the patchset (typos, comments, better logics).
They will come up, hopefully, next week.

  Shinya