[PATCH v4 0/2] Handle reboot for Exynos SoC via restart_handler

Pankaj Dubey pankaj.dubey at samsung.com
Mon Nov 17 03:21:11 PST 2014

This patch removes restart hook from machine_desc of Exynos, and moves
respective code into restart_notifiers.
Exynos5440 handles reboot via clock register so let's register a
restart_handler in Exynos5440 clock driver.
For rest Exynos SoC, reboot is handled via PMU SWRESET register so
let's register a restart_handler in PMU driver for handling this.

This patch is inspired and dependent on following patch series[1] from
Geunter Roeck.

[1]: kernel: Add support for kernel restart handler call chain

I have tested reboot functionality on Exynos3250 based board, on
kgene/for-next as well as linux-next's next-20141114 tag.

Patch v3 and related discussion can be found here

Changes since v3:
  - As v2 is causing conflict after recent changes in kgene/for-next,
    rebased on top of kgene/for-next dated 2014-11-13.
  - Removed dependency patch list from cover-letter as all dependencies 
    are merged into kgene/for-next.

Changes since v2:
  - Used register_restart_handler instead of register_reboot_notifier.
  - Updated notifier names and commit message accordingly.

Changes since v1:
  - Addressed review comments from Tomasz Figa. Removed usage of 
    local variables where ever unnecessary.
  - Make reg_base as global in clk-exynos5440.c file, to avoid 
    iomapping it again in reboot_notifier handler.

Pankaj Dubey (2):
  clk: samsung: exynos5440: move restart code into clock driver
  ARM: EXYNOS: PMU: move restart code into pmu driver

 arch/arm/mach-exynos/common.h        |    1 -
 arch/arm/mach-exynos/exynos.c        |   23 -----------------------
 arch/arm/mach-exynos/pmu.c           |   23 +++++++++++++++++++++++
 drivers/clk/samsung/clk-exynos5440.c |   29 ++++++++++++++++++++++++++++-
 4 files changed, 51 insertions(+), 25 deletions(-)


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