Hi, On Mon, Oct 10, 2011 at 02:22:23PM +0530, Munegowda, Keshava wrote: > Hi paul and Felipe > > Here is the highlights of the change in the design of USB Host which > we can do after kernel 3.2 release; > > 1. separate the TLL changes from UHH > 2. The TLL is be a new platform driver in ./drivers/mfd > 3. the TLL platform driver will export apis for enable/disable clocks > and settings. TLL should control its clocks through pm_runtime APIs like anything else. If you really must export APIs to be used by UHH, you need to have an API so that you can claim/release a TLL channel and get/put for increasing/decreasing PM counters. I still think though, you should try to avoid exporting OMAP-specific APIs all over the place. Ideally, we would be able to have some way of saying that UHH and TLL are closely related... something like having the ability to say e.g. two devices are sibblings of each other, so that we could ask for a sibbling to wakeup/sleep depending if we need it or not. Dunno, maybe I'm drifting here, but I don't think exposing OMAP-specific APIs is wise. -- balbi
Attachment:
signature.asc
Description: Digital signature
