Tomasz Figa wrote: > > On 21.02.2014 14:15, Tomasz Figa wrote: > > Hi Kukjin, > > Hi Tomasz, > > On 06.02.2014 20:12, Tomasz Figa wrote: > >> Current Samsung PM code is heavily unprepared for multiplatform systems. > >> The design implies accessing functions and global variables defined in > >> particular mach- subdirectory from common code in plat-, which is not > >> allowed when building ARCH_MULTIPLATFORM. In addition there is a lot of > >> forced code unification, which makes common function handle any > possible > >> quirks of all supported SoCs. In the end this design turned out to not > >> work too well, ending with a lot of empty functions exported from mach-, > >> just because code in common pm.c calls them. Moreover, recent trend of > >> moving lower level suspend/resume code to proper drivers, like pinctrl > >> or clk, made a lot of code there redundant, especially on DT-only > >> platforms > >> like Exynos. > >> > >> This patch series attempts to untie Exynos PM support from the legacy > >> Samsung PM core and make it multiplatform-aware, by isolating truly > >> generic parts of the latter, making them multiplatform-friendly and > then > >> reimplementing Exynos PM support in a multiplatform-capable way by > using > >> those generic parts. The result is that now PM initialization is > started > >> from mach-exynos*-dt, which calls Exynos-specific initialization code > >> that > >> registers platform_suspend_ops, so control flow is basically reversed > >> ending with mach- code calling more generic plat- code if needed. > >> > >> This is limited to Exynos right now, but remaining SoCs could follow > >> in further series. > >> > >> Depends on Samsung PM consolidation part 1 (clocks) series: > >> - http://thread.gmane.org/gmane.linux.kernel.samsung-soc/26816 > >> > >> On Exynos4210-based Trats, Exynos4412-based Trats2 and Exynos5250-based > >> Arndale boards (except suspend/resume, which is broken because of > >> unrelated reasons): > >> > >> Tested-by: Tomasz Figa <t.figa@xxxxxxxxxxx> > >> > >> Changes since v1 (RFC): > >> - fixed l2x0 resume, > >> - fixed checkpatch complaints (about issues in existing code being > >> moved), > >> - rebased on top of current linux-next, > >> - slightly reordered patches to make the order more logical. > >> > >> Tomasz Figa (12): > >> ARM: EXYNOS: Do not resume l2x0 if not enabled before suspend > >> ARM: SAMSUNG: Add soc_is_s3c2410() helper > >> ARM: SAMSUNG: pm: Save UART DIVSLOT register based on SoC type > >> ARM: SAMSUNG: pm: Use debug_ll_addr() to get UART base address > >> ARM: SAMSUNG: pm: Consolidate PM debug functions > >> ARM: SAMSUNG: pm: Move Samsung PM debug code into separate file > >> ARM: SAMSUNG: Move common save/restore helpers to separate file > >> ARM: SAMSUNG: pm: Move s3c_pm_check_* prototypes to plat/pm-common.h > >> ARM: EXYNOS: Kconfig: Fix abuse of CONFIG_PM > >> ARM: EXYNOS: Remove PM initcalls and useless indirection > >> ARM: EXYNOS: Stop using legacy Samsung PM code > >> ARM: exynos: Allow wake-up using GIC interrupts > >> > >> arch/arm/mach-exynos/Kconfig | 16 +-- > >> arch/arm/mach-exynos/Makefile | 2 +- > >> arch/arm/mach-exynos/common.c | 1 + > >> arch/arm/mach-exynos/common.h | 14 ++ > >> arch/arm/mach-exynos/include/mach/pm-core.h | 75 ----------- > >> arch/arm/mach-exynos/pm.c | 172 > >> +++++++++++++++++++------ > >> arch/arm/mach-exynos/regs-pmu.h | 2 + > >> arch/arm/mach-exynos/sleep.S | 85 ++++++++++++ > >> arch/arm/mach-s3c64xx/pm.c | 1 - > >> arch/arm/mach-s5p64x0/pm.c | 1 - > >> arch/arm/plat-samsung/Makefile | 2 + > >> arch/arm/plat-samsung/include/plat/cpu.h | 6 + > >> arch/arm/plat-samsung/include/plat/pm-common.h | 110 ++++++++++++++++ > >> arch/arm/plat-samsung/include/plat/pm.h | 80 +----------- > >> arch/arm/plat-samsung/pm-check.c | 2 +- > >> arch/arm/plat-samsung/pm-common.c | 75 +++++++++++ > >> arch/arm/plat-samsung/pm-debug.c | 98 ++++++++++++++ > >> arch/arm/plat-samsung/pm.c | 146 > >> --------------------- > >> arch/arm/plat-samsung/s5p-sleep.S | 43 ------- > >> 19 files changed, 531 insertions(+), 400 deletions(-) > >> delete mode 100644 arch/arm/mach-exynos/include/mach/pm-core.h > >> create mode 100644 arch/arm/mach-exynos/sleep.S > >> create mode 100644 arch/arm/plat-samsung/include/plat/pm-common.h > >> create mode 100644 arch/arm/plat-samsung/pm-common.c > >> create mode 100644 arch/arm/plat-samsung/pm-debug.c > >> > > > > What do you think about this series? > I'm fine on this whole series and will apply. Thanks, Kukjin -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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