linux-toradex.git/drivers/sh/pm_runtime.c, branch v4.1.10

drivers: sh: Remove test for now unsupported sh7372

2015-04-27T04:08:14+00:00

Signed-off-by: Geert Uytterhoeven 
Signed-off-by: Simon Horman

drivers: sh: Disable PM runtime for multi-platform r8a73a4 with genpd

2015-04-27T04:08:13+00:00

If the default PM domain using PM_CLK is used for PM runtime, the real PM
domain(s) cannot be registered from DT later.

Hence do not enable it when running a multi-platform kernel with genpd
support on an r8a73a4. The R-Mobile PM domain driver will take care of
PM runtime management of the module clocks.

The default PM domain is still needed for:
  - platforms without genpd support,
  - the legacy (non-DT) case, where genpd may take over later, except
    for the C5 "always on" PM domain.

Signed-off-by: Geert Uytterhoeven 
Signed-off-by: Simon Horman

drivers: sh: Disable PM runtime for multi-platform sh73a0 with genpd

2015-04-27T04:08:12+00:00

If the default PM domain using PM_CLK is used for PM runtime, the real PM
domain(s) cannot be registered from DT later.

Hence do not enable it when running a multi-platform kernel with genpd
support on an sh73a0. The R-Mobile PM domain driver will take care of
PM runtime management of the module clocks.

The default PM domain is still needed for:
  - platforms without genpd support,
  - the legacy (non-DT) case, where genpd may take over later, except
    for the C5 "always on" PM domain.

Signed-off-by: Geert Uytterhoeven 
Signed-off-by: Simon Horman

drivers: sh: Disable PM runtime for multi-platform r8a7740 with genpd

2015-02-23T22:26:12+00:00

If the default PM domain using PM_CLK is used for PM runtime, the real PM
domain(s) cannot be registered from DT later.

Hence do not enable it when running a multi-platform kernel with genpd
support on an r8a7740. The R-Mobile PM domain driver will take care of
PM runtime management of the module clocks.

The default PM domain is still needed for:
  - platforms without genpd support,
  - the legacy (non-DT) case, where genpd may take over later, except
    for the C5 "always on" PM domain.

Signed-off-by: Geert Uytterhoeven 
Signed-off-by: Simon Horman

drivers: sh / PM: Replace CONFIG_PM_RUNTIME with CONFIG_PM

2014-12-05T02:08:24+00:00

After commit b2b49ccbdd54 (PM: Kconfig: Set PM_RUNTIME if PM_SLEEP is
selected) PM_RUNTIME is always set if PM is set, so #ifdef blocks
depending on CONFIG_PM_RUNTIME may now be changed to depend on
CONFIG_PM.

Replace CONFIG_PM_RUNTIME with CONFIG_PM in drivers/sh/pm_runtime.c.

Signed-off-by: Rafael J. Wysocki 
Acked-by: Simon Horman 
Acked-by: Geert Uytterhoeven

drivers: sh: Leave disabling of unused PM domains to genpd

2014-09-08T22:46:13+00:00

Since genpd at late init, will try to disable unused PM domains we
don't need to do it from here as well.

Signed-off-by: Ulf Hansson 
Acked-by: Simon Horman 
Reviewed-by: Kevin Hilman 
Signed-off-by: Rafael J. Wysocki

drivers: sh: Enable PM runtime for new R-Car Gen2 SoCs

2014-06-05T00:50:11+00:00

The PM runtime code should also be enabled for:
  - r8a7792 (R-Car V2H)
  - r8a7793 (R-Car M2-N)
  - r8a7794 (R-Car E2)

Signed-off-by: Geert Uytterhoeven 
Signed-off-by: Simon Horman

drivers: sh: pm_runtime implementation needs to suspend and resume devices

2014-05-26T01:45:06+00:00

If we override the platform bus calls for pm_runtime then we end up
with the calls to the devices' suspend and resume methods ignored
in favour of the bus ones.

Change to calling the pm_runtime calls to suspend and resume the
devices specifically in the drivers/sh/pm_runtime.c implementation
to allow any device that may want to run power management to do so.

Note, all the current sh driver implementations do not use their
own power management code so this is not a major implementation
issues.

This also brings the implementation into line with the versions
used by the Davinci and Keystone PM domain code, so once fully
tested these implementations could be merged together.

Signed-off-by: Ben Dooks 
Signed-off-by: Geert Uytterhoeven 
Reviewed-by: Laurent Pinchart 
Signed-off-by: Simon Horman

drivers: sh: pm_runtime does not need idle callback

2014-05-26T01:44:54+00:00

In the runtime_pm idle callback the code assumes that a NULL .runtime_idle
entry is the same as a .runtime_idle entry that returns 0 as a result. This
means the entry in drivers/sh/pm_runtime can be removed in favour of just
leaving the entry NULL.

Signed-off-by: Ben Dooks 
Signed-off-by: Geert Uytterhoeven 
Reviewed-by: Laurent Pinchart 
Tested-by: Laurent Pinchart  [r8a7779 legacy]
Signed-off-by: Simon Horman

drivers: sh: compile drivers/sh/pm_runtime.c if ARCH_SHMOBILE_MULTI

2014-05-12T07:05:01+00:00

If the kernel is built to support multi-ARM configuration with shmobile
support built in, then drivers/sh is not built. This contains the PM
runtime code in drivers/sh/pm_runtime.c, which implicitly enables the
module clocks for all devices, and thus is quite essential.
Without this, the state of clocks depends on implicit reset state, or on
the bootloader.

If ARCH_SHMOBILE_MULTI then build the drivers/sh directory, but ensure that
bits that may conflict (drivers/sh/clk if the common clock framework is
enabled) or are not used (drivers/sh/intc), are not built.
Also, only enable the PM runtime code when actually running on a shmobile
SoCs that needs it.

ARCH_SHMOBILE_MULTI was added a while ago by commit
efacfce5f8a523457e9419a25d52fe39db00b26a ("ARM: shmobile: Introduce
ARCH_SHMOBILE_MULTI"), but drivers/sh was compiled for both
ARCH_SHMOBILE_LEGACY and ARCH_SHMOBILE_MULTI until commit
bf98c1eac1d4a6bcf00532e4fa41d8126cd6c187 ("ARM: Rename ARCH_SHMOBILE to
ARCH_SHMOBILE_LEGACY").

Inspired by a patch from Ben Dooks .

Signed-off-by: Geert Uytterhoeven 
Signed-off-by: Simon Horman