[Intel-gfx] [PATCH] drm/i915/psr: disable psr2 for resolution greater than 32X20

[Vivi, Rodrigo]

Reviewed-by: Rodrigo Vivi <rodrigo.vivi at intel.com>

On Tue, 2017-01-10 at 12:32 +0530, vathsala nagaraju wrote:
> PSR2 is restricted to work with panel resolutions upto 3200x2000,
> move the check to intel_psr_match_conditions and fully block psr.
> 
> Cc: Rodrigo Vivi <rodrigo.vivi at intel.com>
> Cc: Jim Bride <jim.bride at linux.intel.com>
> Suggested-by: Rodrigo Vivi <rodrigo.vivi at intel.com>
> Signed-off-by: Vathsala Nagaraju <vathsala.nagaraju at intel.com>
> ---
>  drivers/gpu/drm/i915/intel_psr.c | 15 ++++++++-------
>  1 file changed, 8 insertions(+), 7 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/intel_psr.c b/drivers/gpu/drm/i915/intel_psr.c
> index 6aca8ff..f2ca2a9 100644
> --- a/drivers/gpu/drm/i915/intel_psr.c
> +++ b/drivers/gpu/drm/i915/intel_psr.c
> @@ -387,6 +387,13 @@ static bool intel_psr_match_conditions(struct intel_dp *intel_dp)
>  		return false;
>  	}
>  
> +	/* PSR2 is restricted to work with panel resolutions upto 3200x2000 */
> +	if (intel_crtc->config->pipe_src_w > 3200 ||
> +				intel_crtc->config->pipe_src_h > 2000) {
> +		dev_priv->psr.psr2_support = false;
> +		return false;
> +	}
> +
>  	dev_priv->psr.source_ok = true;
>  	return true;
>  }
> @@ -425,7 +432,6 @@ void intel_psr_enable(struct intel_dp *intel_dp)
>  	struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp);
>  	struct drm_device *dev = intel_dig_port->base.base.dev;
>  	struct drm_i915_private *dev_priv = to_i915(dev);
> -	struct intel_crtc *crtc = to_intel_crtc(intel_dig_port->base.base.crtc);
>  
>  	if (!HAS_PSR(dev_priv)) {
>  		DRM_DEBUG_KMS("PSR not supported on this platform\n");
> @@ -452,12 +458,7 @@ void intel_psr_enable(struct intel_dp *intel_dp)
>  		hsw_psr_setup_vsc(intel_dp);
>  
>  		if (dev_priv->psr.psr2_support) {
> -			/* PSR2 is restricted to work with panel resolutions upto 3200x2000 */
> -			if (crtc->config->pipe_src_w > 3200 ||
> -				crtc->config->pipe_src_h > 2000)
> -				dev_priv->psr.psr2_support = false;
> -			else
> -				skl_psr_setup_su_vsc(intel_dp);
> +			skl_psr_setup_su_vsc(intel_dp);
>  		}
>  
>  		/*