[Intel-gfx] [PATCH 07/11] drm/i915: add update function to disable/enable-back PSR

[Chris Wilson]

On Thu, Jul 11, 2013 at 06:45:01PM -0300, Rodrigo Vivi wrote:
> @@ -1602,6 +1611,26 @@ void intel_edp_psr_disable(struct intel_dp *intel_dp)
>  		DRM_ERROR("Timed out waiting for PSR Idle State\n");
>  }
>  
> +void intel_edp_psr_update(struct drm_device *dev)
> +{
> +	struct intel_encoder *encoder;
> +	struct intel_dp *intel_dp = NULL;
> +
> +	list_for_each_entry(encoder, &dev->mode_config.encoder_list, base.head)
> +		if (encoder->type == INTEL_OUTPUT_EDP) {

How many eDP are you planning to allow on the system? We already have
precedence for the presumption of a single (integrated) panel on a device,
maybe we can add the logic there (i.e. stash a back pointer in this case)?

We could then also do a debugfs/i915_panel_info where we can inspect
various details normally associated with the panels (PSR status, backlight
interface, eDP vs LVDS, etc).
-Chris

-- 
Chris Wilson, Intel Open Source Technology Centre