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| author | Rafael J. Wysocki <rjw@sisk.pl> | 2011-12-23 01:23:30 +0100 |
|---|---|---|
| committer | Rafael J. Wysocki <rjw@sisk.pl> | 2011-12-25 23:39:11 +0100 |
| commit | 0f966d74cf77a9140a025464a287e1d2fee8a1fc (patch) | |
| tree | 49eaef0010125e0474f79405091a803e142b7572 /arch | |
| parent | PM / shmobile: Add support for the sh7372 A4S power domain / sleep mode (diff) | |
| download | linux-0f966d74cf77a9140a025464a287e1d2fee8a1fc.tar.xz linux-0f966d74cf77a9140a025464a287e1d2fee8a1fc.zip | |
PM / shmobile: Don't include SH7372's INTCS in syscore suspend/resume
Since the SH7372's INTCS in included into syscore suspend/resume,
which causes the chip to be accessed when PM domains have been
turned off during system suspend, the A4R domain containing the
INTCS has to stay on during system sleep, which is suboptimal
from the power consumption point of view.
For this reason, add a new INTC flag, skip_syscore_suspend, to mark
the INTCS for intc_suspend() and intc_resume(), so that they don't
touch it. This allows the A4R domain to be turned off during
system suspend and the INTCS state is resrored during system
resume by the A4R's "power on" code.
Suggested-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Magnus Damm <damm@opensource.se>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/mach-shmobile/intc-sh7372.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/arm/mach-shmobile/intc-sh7372.c b/arch/arm/mach-shmobile/intc-sh7372.c index d087b31b5d12..89afcaba99a1 100644 --- a/arch/arm/mach-shmobile/intc-sh7372.c +++ b/arch/arm/mach-shmobile/intc-sh7372.c @@ -535,6 +535,7 @@ static struct resource intcs_resources[] __initdata = { static struct intc_desc intcs_desc __initdata = { .name = "sh7372-intcs", .force_enable = ENABLED_INTCS, + .skip_syscore_suspend = true, .resource = intcs_resources, .num_resources = ARRAY_SIZE(intcs_resources), .hw = INTC_HW_DESC(intcs_vectors, intcs_groups, intcs_mask_registers, |