From 0f966d74cf77a9140a025464a287e1d2fee8a1fc Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Fri, 23 Dec 2011 01:23:30 +0100 Subject: 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 Signed-off-by: Rafael J. Wysocki Acked-by: Magnus Damm --- arch/arm/mach-shmobile/intc-sh7372.c | 1 + 1 file changed, 1 insertion(+) (limited to 'arch/arm/mach-shmobile/intc-sh7372.c') 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, -- cgit v1.2.1