I shouldn't oversimplify the power management in a cell phone. When I said we turned whole devices on/off, I was referring only to what the system-level PM (which uses suspend/resume) does. There's a fair amount of subsystem-specific power management outside the Linux suspend/resume framework. Some of it might be handled in the framework, if the framework were more capable. scott -----Original Message----- From: Pavel Machek [mailto:pavel@xxxxxx] Sent: Thursday, January 05, 2006 4:46 PM To: Preece Scott-PREECE Cc: Alan Stern; akpm@xxxxxxxx; linux-pm@xxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx Subject: Re: [linux-pm] [patch] pm: fix runtime powermanagement's /sys interface On ?t 05-01-06 17:21:38, Preece Scott-PREECE wrote: > We do have multiple system-level low-power modes. I believe today they > differ in turning whole devices on or off, but there are some of those > devices that could be put in reduced-function/lowered-speed modes if > we were ready to use a finer-grained distinction. I think we were talking multiple off modes for _single device_. It is good to know that even cellphones can get away with whole devices on/off today. Pavel -- Thanks, Sharp!
