[ PATCH v2 00/17] ARM: shmobile: Enable drivers/sh/pm_runtime.c on multi-platform

[Geert Uytterhoeven <geert+renesas@glider.be>]

	Hi all,

This patchset enables the PM runtime code in drivers/sh/pm_runtime.c when
running a multi-platform ARM kernel including support for shmobile.
Before this code was only enabled for legacy shmobile kernels, leading to
disabled clocks in multiplatform kernels, depending on implicit reset state
or on the bootloader.
It also contains some related cleanups, and removals of workarounds.

  - [01/17] ARM: shmobile: r8a7740: Remove unused
    r8a7740_add_early_devices_dt()
  - [02/17] ARM: shmobile: r8a7740: Make r8a7740_meram_workaround() __init
  - [03/17] ARM: shmobile: sh7372: Call sh7372_add_early_devices() instead of
    open coding
  - [04/17] drivers: sh: pm_runtime does not need idle callback
  - [05/17] drivers: sh: pm_runtime implementation needs to suspend and resume
    devices
  - [06/17] sh: intc: Restrict INTC_USERIMASK to SH4A
  - [07/17] drivers: sh: compile drivers/sh/pm_runtime.c if ARCH_SHMOBILE_MULTI
  - [08/17] ARM: shmobile: Call sh_pm_runtime_init() from platform code on all
    SoCs
  - [09/17] drivers: sh: Remove automatic sh_pm_runtime_init() if
    ARCH_SHMOBILE_LEGACY
  - [10/17] ARM: shmobile: koelsch-reference: Remove workarounds for core clock
    issues
  - [11/17] ARM: shmobile: lager-reference: Remove workarounds for core clock
    issues
  - [12/17] clk: shmobile: mstp: Fix the is_enabled() operation
  - [13/17] ARM: shmobile: r7s72100: Populate .init_machine for generic
    r7s72100
  - [14/17] ARM: shmobile: r8a73a4: Populate .init_machine for generic r8a73a4
  - [15/17] ARM: shmobile: r8a7778: Populate .init_machine for generic r8a7778
  - [16/17] ARM: shmobile: r8a7790: Populate .init_machine for generic r8a7790
  - [17/17] ARM: shmobile: r8a7791: Populate .init_machine for generic r8a7791

Patches 4, 5, and 7 were authored by Ben Dooks, with some changes made by me
(for patch 7).
Patch 8 was based on a patch by Ben for r8a7790.
Patch 12 was authored by Laurent Pinchart.

Besides rebasing, only one patch was changed, compared to previous submission:
  - 8: The call to sh_pm_runtime_init() was moved to the start of
    .init_machine(), to enable the GPIO clocks on R-Car Gen2.

Several patches are new:
  - 1-3 contain some related cleanups to board support code,
  - 5 was added as it touches related code,
  - 10-11 remove workarounds that are no longer needed,
  - 12 was added as it depends on the fixes from this series,
  - 13-17 are more or less RFCs: As we always have to call
    sh_pm_runtime_init(), I added .init_machine hooks in the generic support
    code for all SoCs that didn't have it yet. I also included code to set up
    SoC platform support while at it, as this will be useful later. Booting
    using a generic "renesas,r*" DT was untested.

This was tested on Koelsch, both legacy and multi-platform.

Many thanks to Ben Dooks, Laurent Pinchart, and Magnus Damm for the
valuable input, investigations, and discussions.

Thanks!

Gr{oetje,eeting}s,

						Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
							    -- Linus Torvalds