On Wed, Apr 30, 2014 at 05:01:26PM +0100, Pawel Moll wrote: > Components of the Versatile Express platform (configuration > microcontrollers on motherboard and daughterboards in particular) > talk to each other over a custom configuration bus. They > provide miscellaneous functions (from clock generator control > to energy sensors) which are represented as platform devices > (and Device Tree nodes). The transactions on the bus can > be generated by different "bridges" in the system, some > of which are universal for the whole platform (for the price > of high transfer latencies), others restricted to a subsystem > (but much faster). > > Until now drivers for such functions were using custom "func" > API, which is being replaced in this patch by regmap calls. > This required: > > * a rework (and move to drivers/bus directory, as suggested > by Samuel and Arnd) of the config bus core, which is much > simpler now and uses device model infrastructure (class) > to keep track of the bridges; non-DT case (soon to be > retired anyway) is simply covered by a special device > registration function > > * the new config-bus driver also takes over device population, > so there is no need for special matching table for > of_platform_populate nor "simple-bus" hack in the arm64 > model dtsi file (relevant bindings documentation has > been updated); this allows all the vexpress devices > fit into normal device model, making it possible > to remove plenty of early inits and other hacks in > the near future > > * adaptation of the syscfg bridge implementation in the > sysreg driver, again making it much simpler; there is > a special case of the "energy" function spanning two > registers, where they should be both defined in the tree > now, but backward compatibility is maintained in the code > > * modification of the relevant drivers: > > * hwmon - just a straight-forward API change > * power/reset driver - API change > * regulator - API change plus error handling > simplification > * osc clock driver - this one required larger rework > in order to turn in into a standard platform driver > > Signed-off-by: Pawel Moll <pawel.moll@xxxxxxx> > Acked-by: Mark Brown <broonie@xxxxxxxxxx> > Acked-by: Lee Jones <lee.jones@xxxxxxxxxx> For hwmon: Acked-by: Guenter Roeck <linux@xxxxxxxxxxxx> _______________________________________________ lm-sensors mailing list lm-sensors@xxxxxxxxxxxxxx http://lists.lm-sensors.org/mailman/listinfo/lm-sensors
