[PATCH v9 0/2] Adds PMU and S2R support for exynos5420

[Vikas Sajjan]

Rebased on
1] Kukjin Kim's tree, for-next branch
https://git.kernel.org/cgit/linux/kernel/git/kgene/linux-samsung.git/log/?h=for-next
2] Pankaj Dubey's v9 PMU patchset
http://www.spinics.net/lists/arm-kernel/msg367939.html

changes since v8:
	- addressed abhilash's comments to remove the restoring of 
	  the CPU0 low power state register, since it will taken care in mcpm s2r
	  patch from abhilash.

changes since v7:
	- rebased on pankaj's latest patchset.

changes since v6:
	- rebased on 3.17.rc1.

changes since v5:
	- Refactored pm.c to use DT based lookup as suggested by Tomasz Figa.

changes since v4:
	- Adressed comments from Tomasz figa and rebased on Pankaj Dubey's v5 PMU patchset

changes since v3:
Addressed the following comments from Pankaj Dubey, Bartlomiej Zolnierkiewicz,
Tomasz Figa and Alim Akhtar:
        - Moved EXYNOS5420_USE_STANDBY_WFI_ALL define to regs-pmu.h.
        - Merged exynos5420_set_core_flag function into powerdown_conf.
        - Removed XXTI_DURATION3 register setting.
        - Updated the commit message and ordered the clock registers in clock
          patch.
        - Removed the code for SYS_DISP1_BLK_CFG handling.
        - Modified SoC checks to A9 specific checks in PM code.
        - Updated some comments in the code and added macros for register offsets.
        - Fixed code which was changing pad retention code for older SoCs.

changes since v2:
        - Addressed comments from Tomasz figa
        - rebased on Pankaj's V3 patchset https://lkml.org/lkml/2014/5/2/612
        - dropped patch "ARM: dts: Add node for GPIO keys on SMDK5420",
          will be sent separately.

changes since v1:
        - Addressed comments from Tomasz figa.
        - restructured/consolidated as per Tomasz figa's PM consolidations for exynos

Tested on Kukjin Kim's tree, for-next branch + 
1] http://www.spinics.net/lists/linux-samsung-soc/msg33750.html
2] https://www.mail-archive.com/linux-samsung-soc@vger.kernel.org/msg37260.html
3] with the CLK_IGNORE_UNUSED flag for aclk200_disp1 CLK

on Exynos5420 based chromebook (peach-pit board)

Below procedures were followed to test S2R:
Procedure A:
	1. make multi_v7_defconfig 
	2  enable MCPM for 5420
	3. enable S3C RTC
	5. echo +20 > /sys/class/rtc/rtc0/wakealarm && echo mem > /sys/power/state
Procedure B:
	1. make exynos_defconfig 
	4. echo +20 > /sys/class/rtc/rtc0/wakealarm && echo mem > /sys/power/state

Abhilash Kesavan (1):
  ARM: exynos5: Add PMU support for 5420

Vikas Sajjan (1):
  ARM: exynos5: Add Suspend-to-RAM support for 5420

 arch/arm/mach-exynos/pmu.c      |  287 +++++++++++++++++++++++++++++++++++++++
 arch/arm/mach-exynos/regs-pmu.h |  227 +++++++++++++++++++++++++++++++
 arch/arm/mach-exynos/suspend.c  |  151 +++++++++++++++++++-
 3 files changed, 663 insertions(+), 2 deletions(-)

-- 
1.7.9.5