On 10/22/2015 01:35 PM, ville.syrjala@xxxxxxxxxxxxxxx wrote:
> From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
>
> Do a dry run with rtcwake first to determine if the system even supports
> the intended suspend state. If not, skip the test.
>
> Fixes a bunch of stuff on my BYT FFRD8 that doesn't support S3.
>
> Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
> ---
> lib/igt_aux.c | 6 ++++++
> 1 file changed, 6 insertions(+)
>
> diff --git a/lib/igt_aux.c b/lib/igt_aux.c
> index 04ca25b..f3c76ae 100644
> --- a/lib/igt_aux.c
> +++ b/lib/igt_aux.c
> @@ -357,6 +357,9 @@ void igt_system_suspend_autoresume(void)
> * seems to fare better. We need to investigate what's going on. */
> igt_skip_on_simulation();
>
> + /* skip if system doesn't support suspend-to-mem */
> + igt_skip_on(system("rtcwake -n -s 30 -m mem") != 0);
> +
> ret = system("rtcwake -s 30 -m mem");
> igt_assert_f(ret == 0,
> "This failure means that something is wrong with the "
> @@ -384,6 +387,9 @@ void igt_system_hibernate_autoresume(void)
> * seems to fare better. We need to investigate what's going on. */
> igt_skip_on_simulation();
>
> + /* skip if system doesn't support suspend-to-disk */
> + igt_skip_on(system("rtcwake -n -s 90 -m disk") != 0);
> +
> /* The timeout might need to be adjusted if hibernation takes too long
> * or if we have to wait excessively long before resume
> */
>
Are there reliable alternatives to the rtcwake alarm? Maybe some AMT/MEI wakeup event or some ACPI clock thing (handwaving pretty hard here)?
Jesse
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