On Friday 09 March 2007 8:55 am, Jean Delvare wrote:
> > +struct i2c_bitbang_gpio {
> > + int sda;
> > + int scl;
> > +};
>
> ...
>
> Also, this structure alone isn't very useful. I'm waiting to see
> drivers actually making use of it before I will consider merging this
> patch at all.
The notion would be that we could have one i2c bitbanger using
the CONFIG_GENERIC_GPIO <asm/gpio.h> interfaces that could work
on most platforms, using that struct for platform_data and the
usual convention for platform device naming.
I'd expect that struct would be merged as part of such a generic
GPIO bitbang driver, and would only be used by that one driver.
SPI could use such a generic bitbanger too. Until 2.6.21 it's
been missing that last step: it's needed platform-specific
GPIO calls, so the bitbangers were generic except for those
lowest-level hooks.
- Dave
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