On Thu, Sep 30, 2010 at 01:59:44AM -0400, Michael Lawnick wrote: [ ... ] > I only took a rough look, but it seemed to me that the pca is part of > the main device. Yes > From abstraction side of view your problem seems a matter of > synchronization of two independent computer systems. You will need a > shared resource. The access to it could either be part of driver code or > by introducing a 'one-channel multiplexer' as you did. But the sync > needs to be done by your code via a shared data object. > Actually, the pca9541 has a bit in its register set which I can use. See NTESTON in its control register. That is visible as interrupt status at the other master. That is all I need, and reduces complexity significantly. Thanks, Guenter -- To unsubscribe from this list: send the line "unsubscribe linux-i2c" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
