[Intel-gfx] [PATCH i-g-t] tests/kms_frontbuffer_tracking: Skip tests when PSR cannot be enabled

[Paulo Zanoni]

Em Qua, 2017-10-25 às 17:37 -0700, Dhinakaran Pandiyan escreveu:
> The frontbuffer_tracking PSR tests fail if PSR cannot be activated
> when
> there is sink support. But, there are several other requirements
> related to
> mode timings that have to be satisfied before PSR can be enabled. No
> reason
> to fail these tests when PSR cannot be enabled.
> 
> Cc: Paulo Zanoni <paulo.r.zanoni at intel.com>
> Cc: Rodrigo Vivi <rodrigo.vivi at intel.com>
> Signed-off-by: Dhinakaran Pandiyan <dhinakaran.pandiyan at intel.com>
> ---
>  tests/kms_frontbuffer_tracking.c | 8 ++++----
>  1 file changed, 4 insertions(+), 4 deletions(-)
> 
> diff --git a/tests/kms_frontbuffer_tracking.c
> b/tests/kms_frontbuffer_tracking.c
> index a068c8af..13c948de 100644
> --- a/tests/kms_frontbuffer_tracking.c
> +++ b/tests/kms_frontbuffer_tracking.c
> @@ -1548,12 +1548,12 @@ static void teardown_fbc(void)
>  {
>  }
>  
> -static bool psr_sink_has_support(void)
> +static bool psr_has_support(void)
>  {
>  	char buf[256];
>  
>  	debugfs_read("i915_edp_psr_status", buf);
> -	return strstr(buf, "Sink_Support: yes\n");
> +	return strstr(buf, "Enabled: yes\n");

What if PSR can be enabled but is just not enabled due to a bug?

I suppose we could print on debugfs whether source+sink support equals
yes.

>  }
>  
>  static void setup_psr(void)
> @@ -1564,8 +1564,8 @@ static void setup_psr(void)
>  		return;
>  	}
>  
> -	if (!psr_sink_has_support()) {
> -		igt_info("Can't test PSR: not supported by
> sink.\n");
> +	if (!psr_has_support()) {
> +		igt_info("Can't test PSR: not supported.\n");
>  		return;
>  	}
>  	psr.can_test = true;