On 25/02/15 19:03, grygorii.strashko@xxxxxxxxxx wrote:
> From: Grygorii Strashko <Grygorii.Strashko@xxxxxxxxxx>
>
> Add handling of missed events in omap_dss_pm_notif which are
> needed to support hibernation (suspend to disk).
>
> Signed-off-by: Grygorii Strashko <Grygorii.Strashko@xxxxxxxxxx>
> ---
> drivers/video/fbdev/omap2/dss/core.c | 4 ++++
> 1 file changed, 4 insertions(+)
>
> diff --git a/drivers/video/fbdev/omap2/dss/core.c b/drivers/video/fbdev/omap2/dss/core.c
> index 6b74f73..e60976a 100644
> --- a/drivers/video/fbdev/omap2/dss/core.c
> +++ b/drivers/video/fbdev/omap2/dss/core.c
> @@ -178,11 +178,15 @@ static int omap_dss_pm_notif(struct notifier_block *b, unsigned long v, void *d)
> DSSDBG("pm notif %lu\n", v);
>
> switch (v) {
> + case PM_HIBERNATION_PREPARE:
> case PM_SUSPEND_PREPARE:
> + case PM_RESTORE_PREPARE:
> DSSDBG("suspending displays\n");
> return dss_suspend_all_devices();
>
> case PM_POST_SUSPEND:
> + case PM_POST_HIBERNATION:
> + case PM_POST_RESTORE:
> DSSDBG("resuming displays\n");
> return dss_resume_all_devices();
>
Why suspend displays when PM_RESTORE_PREPARE happens? Why resume when
PM_POST_RESTORE happens?
Tomi
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