On Sun, Jan 22, 2012 at 06:48:36PM +0100, Sylwester Nawrocki wrote: > On 01/22/2012 06:27 PM, Bill Gatliff wrote: > > I for one would rather see in-kernel drivers that require it, and then > In fact we have to deal with the opposite now, as some existing drivers > have been used for multiple generations of SoC, where almost unchanged > device IPs are deployed. Those drivers were originally written for the > simplest SoCs. TBH I think most of the devices for which people are running these days will be able to get some win from the system wide stuff - the WFI modes aren't exactly the latest thing in hardware terms, it's just been a long road to getting them supported. Infrastructure like Mark's PM QoS work and Raphael's PM domains work has really helped a lot here. > > patches in mailing lists that show how to un-require it. Make it more > > painful to avoid PM_RUNTIME, and less painful to use it. > Yeah, makes a lot of sense. With new code there is no issue, only the code > with long history is sort of troublesome. It's mostly a transition management issue I think. When I repost I'll add an additional patch on top which moves the clock gating into the runtime PM callbacks, that way the decision on that doesn't block the system wide work. -- 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
