From ef25ba0476015908ef5960f9faac149ddf34ede0 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Wed, 7 Oct 2015 00:49:34 +0200 Subject: PM / sleep: Add flags to indicate platform firmware involvement There are quite a few cases in which device drivers, bus types or even the PM core itself may benefit from knowing whether or not the platform firmware will be involved in the upcoming system power transition (during system suspend) or whether or not it was involved in it (during system resume). For this reason, introduce global system suspend flags that can be used by the platform code to expose that information for the benefit of the other parts of the kernel and make the ACPI core set them as appropriate. Users of the new flags will be added later. Signed-off-by: Rafael J. Wysocki --- drivers/acpi/sleep.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'drivers/acpi/sleep.c') diff --git a/drivers/acpi/sleep.c b/drivers/acpi/sleep.c index 2f0d4db..a0b4d781 100644 --- a/drivers/acpi/sleep.c +++ b/drivers/acpi/sleep.c @@ -487,6 +487,8 @@ static int acpi_suspend_begin(suspend_state_t pm_state) pr_err("ACPI does not support sleep state S%u\n", acpi_state); return -ENOSYS; } + if (acpi_state > ACPI_STATE_S1) + pm_set_suspend_via_firmware(); acpi_pm_start(acpi_state); return 0; @@ -522,6 +524,7 @@ static int acpi_suspend_enter(suspend_state_t pm_state) if (error) return error; pr_info(PREFIX "Low-level resume complete\n"); + pm_set_resume_via_firmware(); break; } trace_suspend_resume(TPS("acpi_suspend"), acpi_state, false); -- cgit v1.1