ARM: OMAP2+: AM33XX: Add suspend-resume support

Hi,

This is the third version of the patch series for adding basic suspend-resume support for AM33XX, previously submitted by Vaibhav Bedia. This patchset is based on 3.11-rc4 and depends on a forthcoming patchset from Suman Anna that adds mailbox support for the wkup_m3. The patches at [1], [2], and [3] are required for the pm code to properly suspend and resume.

The PM code uses the firmware interface and expects the userspace to load the WKUP_M3 binary before the suspend-resume functionality is made available. The binary file (and the source-code for WKUP_M3) can be obtained from the 'next2' branch at [4]. The WKUP_M3 binary can either be loaded post bootup via the sysfs entry './sys/devices/ocp.2/wkup_m3.4/firmware' or it can be included in the kernel image as part of the build process.

Suspend to mem is tested on am335x-bone and am335x-evm.

More details on AM335x suspend-resume are provided within the commit logs for each patch.

Changes in v3:
- Moved wkup_m3 code into separate driver
- Split up ti_emif header move
- Addressed clean-up comments
- Removed mailbox patches
- v2-v3 Discussion:
http://marc.info/?l=linux-arm-kernel&m=135698501821090&w=4

Changes in v2:
- Broke patches up to isolate assembly code and build hookup.
- Moved control module code to separate module
- v1->v2 Discussion:
http://lists.infradead.org/pipermail/linux-arm-kernel/2012-November/129508.html

Regards,
Dave

[1] http://marc.info/?l=linux-arm-kernel&m=137303736714638&w=4
[2] http://marc.info/?l=linux-omap&m=137303723114610&w=4
[3] http://marc.info/?l=linux-omap&m=137401384611934&w=4
[4] http://arago-project.org/git/projects/?p=am33x-cm3.git;a=shortlog;h=refs/heads/next2

Dave Gerlach (1):
memory: emif: Move EMIF register defines to include/linux/

Vaibhav Bedia (8):
ARM: OMAP2+: AM33XX: control: Add some control module registers and
APIs
ARM: OMAP: DTB: Update IRQ data for WKUP_M3
ARM: OMAP2+: AM33XX: Reserve memory to comply with EMIF spec
ARM: OMAP2+: AM33XX: Add assembly code for PM operations
ARM: OMAP2+: timer: Add suspend-resume callbacks for clkevent device
ARM: OMAP: omap_device: Add APIs to enable and idle hwmods
ARM: OMAP2+: AM33XX: Basic suspend resume support
ARM: OMAP2+: AM33XX: Hookup AM33XX PM code into OMAP builds

 arch/arm/boot/dts/am33xx.dtsi       |    1 +
 arch/arm/mach-omap2/Kconfig         |    7 +-
 arch/arm/mach-omap2/Makefile        |    2 +
 arch/arm/mach-omap2/board-generic.c |    3 +-
 arch/arm/mach-omap2/common.c        |   28 ++
 arch/arm/mach-omap2/common.h        |   14 +
 arch/arm/mach-omap2/control.c       |   57 ++++
 arch/arm/mach-omap2/control.h       |   54 ++++
 arch/arm/mach-omap2/io.c            |    6 +
 arch/arm/mach-omap2/omap_device.c   |    8 +
 arch/arm/mach-omap2/omap_device.h   |    2 +
 arch/arm/mach-omap2/pm.c            |    3 +-
 arch/arm/mach-omap2/pm.h            |    5 +
 arch/arm/mach-omap2/pm33xx.c        |  474 +++++++++++++++++++++++++++++
 arch/arm/mach-omap2/pm33xx.h        |   77 +++++
 arch/arm/mach-omap2/sleep33xx.S     |  350 ++++++++++++++++++++++
 arch/arm/mach-omap2/sram.c          |   10 +-
 arch/arm/mach-omap2/sram.h          |    2 +
 arch/arm/mach-omap2/timer.c         |   32 ++
 arch/arm/mach-omap2/wkup_m3.c       |  183 ++++++++++++
 drivers/memory/emif.h               |  543 +---------------------------------
 include/linux/ti_emif.h             |  558 +++++++++++++++++++++++++++++++++++
 22 files changed, 1872 insertions(+), 547 deletions(-)
 create mode 100644 arch/arm/mach-omap2/pm33xx.c
 create mode 100644 arch/arm/mach-omap2/pm33xx.h
 create mode 100644 arch/arm/mach-omap2/sleep33xx.S
 create mode 100644 arch/arm/mach-omap2/wkup_m3.c
 create mode 100644 include/linux/ti_emif.h