PM: proposed branch for PM collaboration

Hello,

The following patchset is an attempt to collect the various PM patches that have been flowing around, and organize them into one branch to be used for further collaboration on PM development, in particular OFF-mode support.

It is currently a collection of proposed patches[1] from TI and various other patches from Nokia and others to get retention, OFF-mode, CPUidle etc. working in the linux-omap tree.

This series is nowhere near ready for merging into linux-omap, but will be useful for discussion and collaboration on getting the various PM features working at the head of the linux-omap tree, and a place where cleanup and rework efforts can be focused.

If there are no major objections, I will create a branch in linux-omap git and commit this series there. As collaboration continues, I will continue to collect and update patches, fix problems and rebase onto the HEAD of linux-omap.

The goal of this branch is only to facilitate the rework and cleanup of the PM code so it can be merged into linux-omap. Then, the branch will disappear and work can be focused again on the HEAD of linux-omap.

It has currently been tested with a minimal config on 3430SDP, and OFF-mode is hit in suspend. In order to hit suspend:

echo 1 > /sys/power/voltage_off_while_idle
echo 1 > /sys/power/gpio_clocks_off_while_idle
echo 1 > /sys/power/uart_clocks_off_while_idle
echo mem > /sys/power/state

Kevin

[1] This series is roughly based on the following:

Jouni Hogander, Tero Kristo
[PATCH 0/4] Refreshed PM workaround patches 2 -- 15 Aug

Rajendra Nayak:
[PATCH 00/11] OMAP3 CPUidle patches - ver 2 -- 18 July

As well as several patches/hacks/cleanups that have not yet been posted to the list.

Also, there have been newer versions of the CPUidle patches that have been reviewed on the list, but do not apply for various reasons. As soon as they are rebased and updated versions of those are available, I will integrate them.