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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 /drivers/sh | |
| parent | f7dadb37931a6ffa2aa6b443188299166dc5e638 (diff) | |
| download | linux-0f966d74cf77a9140a025464a287e1d2fee8a1fc.tar.gz | |
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 'drivers/sh')
| -rw-r--r-- | drivers/sh/intc/core.c | 8 | ||||
| -rw-r--r-- | drivers/sh/intc/internals.h | 1 |
2 files changed, 9 insertions, 0 deletions
diff --git a/drivers/sh/intc/core.c b/drivers/sh/intc/core.c index 8b7a141ff35e..be5a025eeca3 100644 --- a/drivers/sh/intc/core.c +++ b/drivers/sh/intc/core.c @@ -354,6 +354,8 @@ int __init register_intc_controller(struct intc_desc *desc) if (desc->force_enable) intc_enable_disable_enum(desc, d, desc->force_enable, 1); + d->skip_suspend = desc->skip_syscore_suspend; + nr_intc_controllers++; return 0; @@ -386,6 +388,9 @@ static int intc_suspend(void) list_for_each_entry(d, &intc_list, list) { int irq; + if (d->skip_suspend) + continue; + /* enable wakeup irqs belonging to this intc controller */ for_each_active_irq(irq) { struct irq_data *data; @@ -409,6 +414,9 @@ static void intc_resume(void) list_for_each_entry(d, &intc_list, list) { int irq; + if (d->skip_suspend) + continue; + for_each_active_irq(irq) { struct irq_data *data; struct irq_chip *chip; diff --git a/drivers/sh/intc/internals.h b/drivers/sh/intc/internals.h index 5b934851efa8..b3fe1cf25a28 100644 --- a/drivers/sh/intc/internals.h +++ b/drivers/sh/intc/internals.h @@ -67,6 +67,7 @@ struct intc_desc_int { struct intc_window *window; unsigned int nr_windows; struct irq_chip chip; + bool skip_suspend; }; |