PM / shmobile: Remove the stay_on flag from SH7372's PM domains

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SH7372 uses two independent mechanisms for ensuring that power
domains will never be turned off: the stay_on flag and the "always
on" domain governor.  Moreover, the "always on" governor is only taken
into accout by runtime PM code paths, while the stay_on flag affects
all attempts to turn the given domain off.  Thus setting the stay_on
flag causes the "always on" governor to be unnecessary, which is
quite confusing.

However, the stay_on flag is currently only set for two domains: A3SP
and A4S.  Moreover, it only is set for the A3SP domain if
console_suspend_enabled is set, so stay_on won't be necessary for
that domain any more if console_suspend_enabled is checked directly
in its .suspend() routine.  [This requires domain .suspend() to
return a result, but that is a minor modification.]  Analogously,
stay_on won't be necessary for the A4S domain if it's .suspend()
routine always returns an error code.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Magnus Damm <damm@opensource.se>

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This commit is contained in:

Rafael J. Wysocki 2011-12-23 01:23:39 +01:00

parent 0f966d74cf

commit 767c0f3aed

2 changed files with 29 additions and 23 deletions

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3

arch/arm/mach-shmobile/include/mach/sh7372.h

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49

arch/arm/mach-shmobile/pm-sh7372.c

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