On Thu, 2005-06-09 at 12:39 +0200, Hinko Kocevar wrote: > I would also like to see SPI core in linux driver model, but nothing > like I2C > stuff. SPI is far to simple (and yet so diverse) that much more simple > concept > could be used. Did you look at sound/i2c/i2c.c? ALSA has its own i2c implementation, only 333 lines, due to the kernel i2c core being overly complex for ALSA's needs. "Although there is a standard i2c layer on Linux, ALSA has its own i2c codes for some cards, because the soundcard needs only a simple operation and the standard i2c API is too complicated for such a purpose." (from http://www.alsa-project.org/~iwai/writing-an-alsa-driver/x77.htm) Personally, I would start with this, then add any needed functionality. Lee
