Re: [PATCH 0/4] ARM: EXYNOS4: Support generic Power domain framework for EXYNOS4210

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On Sat, Aug 13, 2011 at 11:24:07PM +0200, Rafael J. Wysocki wrote:
> On Thursday, August 11, 2011, Chanwoo Choi wrote:
> > The following patch set use the generic Power domain Framework instead of
> > power domain code depend of Samsung SoC.
> > 
> > Chanwoo Choi (4):
> >   ARM: EXYNOS4: Support for generic I/O power domains on EXYNOS4210
> >   ARM: EXYNOS4: Support for generic Clock manipulation PM callbacks
> >   ARM: EXYNOS4: Delete the power-domain code depend on Samsung SoC
> >   ARM: EXYNOS4: Add power domain to use generic Power domain Framework
> > 
> >  arch/arm/mach-exynos4/Kconfig                      |   10 +-
> >  arch/arm/mach-exynos4/Makefile                     |    4 +-
> >  arch/arm/mach-exynos4/dev-pd.c                     |  139 --------------
> >  arch/arm/mach-exynos4/include/mach/pm-exynos4210.h |   52 ++++++
> >  arch/arm/mach-exynos4/include/mach/regs-clock.h    |    8 +
> >  arch/arm/mach-exynos4/mach-nuri.c                  |   21 ++-
> >  arch/arm/mach-exynos4/mach-smdkc210.c              |   26 ++-
> >  arch/arm/mach-exynos4/mach-smdkv310.c              |   23 ++-
> >  arch/arm/mach-exynos4/mach-universal_c210.c        |   21 ++-
> >  arch/arm/mach-exynos4/pm-exynos4210.c              |  189 ++++++++++++++++++++
> >  arch/arm/mach-exynos4/pm-runtime.c                 |   56 ++++++
> >  arch/arm/plat-samsung/Kconfig                      |    8 -
> >  arch/arm/plat-samsung/Makefile                     |    4 -
> >  arch/arm/plat-samsung/include/plat/pd.h            |   30 ---
> >  arch/arm/plat-samsung/pd.c                         |   95 ----------
> >  15 files changed, 377 insertions(+), 309 deletions(-)
> >  delete mode 100644 arch/arm/mach-exynos4/dev-pd.c
> >  create mode 100644 arch/arm/mach-exynos4/include/mach/pm-exynos4210.h
> >  create mode 100644 arch/arm/mach-exynos4/pm-exynos4210.c
> >  create mode 100644 arch/arm/mach-exynos4/pm-runtime.c
> >  delete mode 100644 arch/arm/plat-samsung/include/plat/pd.h
> >  delete mode 100644 arch/arm/plat-samsung/pd.c
> 
> The patchset looks good to me, but please note that some code it
> is based on will most likely change in 3.2 due to this patchset:
> 
> https://lkml.org/lkml/2011/8/8/420

Err, isn't all that pm_clk stuff just duplicating what the clk API does?
IOW, drivers _can_ (and should be) calling clk_disable() when they don't
need the clock running.
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