On Fri, Sep 14, 2012 at 12:08:06PM +0200, Wolfram Sang wrote: > On Mon, Sep 03, 2012 at 11:23:22PM +0300, Aaro Koskinen wrote: > > Add i2c driver to enable access to devices behind CBUS on Nokia Internet > > Tablets. > > > > The patch also adds CBUS I2C configuration for N8x0 which is one of the > > users of this driver. > > > > Cc: linux-...@vger.kernel.org > > Acked-by: Felipe Balbi <ba...@ti.com> > > Acked-by: Tony Lindgren <t...@atomide.com> > > Signed-off-by: Aaro Koskinen <aaro.koski...@iki.fi> > > OK, I found the short paragrahp about CBUS in the I2C spec, so I2C might > be an appropriate place. Still, before deciding if it should rather be > in the core directory, I still have a few questions. > > Also, does anybody know of a generic bit-banging implementation in the > kernel which could be used here?
there is i2c-gpio, but it wouldn't help much for cbus, unless we change it quite a lot. The generic i2c_algo_bit_data would have to be changed to learn about a 3 wire bus. I guess the impact is much bigger than just accepting this small, self-contained driver. -- balbi
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