Re: [igt-dev] [PATCH i-g-t v4 1/4] test/psr: Skip PSR2 tests when panel resolution is bigger than PSR2 HW supports

[Rodrigo Vivi <rodrigo.vivi@intel.com>]

On Wed, Jan 23, 2019 at 06:25:07PM -0800, Dhinakaran Pandiyan wrote:
> On Wed, 2019-01-23 at 15:56 -0800, José Roberto de Souza wrote:
> > If resolution that will be used in PSR tests is bigger than the
> > resolution that PSR2 HW supports, PSR2 will not be enabled so those
> > tests should be skiped. Most of eDP panels only supports one
> > resolution that is why we don't even try to use other resolution.
> > 
> > BSpec: 7713
> I don't like the fact that we are re-implementing driver code in the
> test to avoid false-positives. We should really replace the panel on
> the WHL machine with a panel that is expected to work. 
>

I fully agree. The debugfs should be auto-suficient.

In the past it was the idea of Source OK. if sink support yes and source ok
and we tried to enabled but it is not getting active,
than we have a bug somewhere.

I don't know the current status of the psr debugfs anymore, but
I believe the test case should infer this information from there
somehow instead of re-implement the driver code here.

> 
> But, as a temporary measure to make CI happy and enable PSR2.

why is this only affecting PSR2 case?

> Reviewed-by: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>
> 
> Rodrigo, what's your opinion on this?
> 
> -DK
> > 
> > Cc: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>
> > Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
> > Signed-off-by: José Roberto de Souza <jose.souza@intel.com>
> > ---
> >  tests/kms_psr.c | 21 +++++++++++++++++++--
> >  1 file changed, 19 insertions(+), 2 deletions(-)
> > 
> > diff --git a/tests/kms_psr.c b/tests/kms_psr.c
> > index 3e16a6bf..4792e158 100644
> > --- a/tests/kms_psr.c
> > +++ b/tests/kms_psr.c
> > @@ -445,13 +445,30 @@ int main(int argc, char *argv[])
> >  		igt_require_f(sink_support(&data, PSR_MODE_1),
> >  			      "Sink does not support PSR\n");
> >  
> > -		data.supports_psr2 = sink_support(&data, PSR_MODE_2);
> > -
> >  		data.bufmgr = drm_intel_bufmgr_gem_init(data.drm_fd,
> > 4096);
> >  		igt_assert(data.bufmgr);
> >  		drm_intel_bufmgr_gem_enable_reuse(data.bufmgr);
> >  
> >  		display_init(&data);
> > +
> > +		data.supports_psr2 = sink_support(&data, PSR_MODE_2);
> > +		if (data.supports_psr2) {
> > +			uint32_t devid =
> > intel_get_drm_devid(data.drm_fd);
> > +			uint16_t max_h = 0, max_v = 0;
> > +			int gen = intel_gen(devid);
> > +
> > +			if (gen >= 10 || IS_GEMINILAKE(devid)) {
> > +				max_h = 4096;
> > +				max_v = 2304;
> > +			} else if (gen == 9) {
> > +				max_h = 3640;
> > +				max_v = 2304;
> > +			}
> > +
> > +			if (data.mode->hdisplay > max_h ||
> > +			    data.mode->vdisplay > max_v)
> > +				data.supports_psr2 = false;
> > +		}
> >  	}
> >  
> >  	for (data.op_psr_mode = PSR_MODE_1; data.op_psr_mode <=
> > PSR_MODE_2;
> 
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