[Intel-gfx] [PATCH] drm/i915: PSR: Keep sink state consistent with source

[Daniel Vetter]

On Fri, Mar 27, 2015 at 06:51:57PM +0000, Vivi, Rodrigo wrote:
> Thanks
> 
> Reviewed-by: Rodrigo Vivi <rodrigo.vivi at intel.com>
> Tested-by: Rodrigo Vivi <rodrigo.vivi at intel.com>

Queued for -next, thanks for the patch.
-Daniel
> 
> On Fri, 2015-03-27 at 17:21 +0530, Durgadoss R wrote:
> > BSpec recommends to keep the main link state consistent
> > between the source and the sink. As per that, update
> > the main link state in sink DPCD register to 'active',
> > for Valleyview based platforms.
> > 
> > Signed-off-by: Durgadoss R <durgadoss.r at intel.com>
> > ---
> >  drivers/gpu/drm/i915/intel_psr.c | 2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> > 
> > diff --git a/drivers/gpu/drm/i915/intel_psr.c b/drivers/gpu/drm/i915/intel_psr.c
> > index b9f40c2..94e14f2 100644
> > --- a/drivers/gpu/drm/i915/intel_psr.c
> > +++ b/drivers/gpu/drm/i915/intel_psr.c
> > @@ -133,7 +133,7 @@ static void hsw_psr_setup_vsc(struct intel_dp *intel_dp)
> >  static void vlv_psr_enable_sink(struct intel_dp *intel_dp)
> >  {
> >  	drm_dp_dpcd_writeb(&intel_dp->aux, DP_PSR_EN_CFG,
> > -			   DP_PSR_ENABLE);
> > +			   DP_PSR_ENABLE | DP_PSR_MAIN_LINK_ACTIVE);
> >  }
> >  
> >  static void hsw_psr_enable_sink(struct intel_dp *intel_dp)
> 
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-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch