On Mon, Oct 10, 2011 at 2:33 PM, Felipe Balbi <balbi@xxxxxx> wrote: > 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. do we have sibling structures today? I dont think so. > > Dunno, maybe I'm drifting here, but I don't think exposing OMAP-specific > APIs is wise. so, it means , if we can have sibling structure, then we can conditionally enable it right? -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
