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Commit 2bdd045e authored by Dhinakaran Pandiyan's avatar Dhinakaran Pandiyan Committed by Rodrigo Vivi
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drm/i915/psr: Check if VBT says PSR can be enabled. 



Driver features data block has a boolean flag for PSR, use this to decide
whether PSR should be enabled on a platform. The module parameter can
still be used to override this.

Note: The feature currently remains disabled by default for all platforms
irrespective of what VBT says.

Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: default avatarDhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>
Signed-off-by: default avatarRodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180509003524.3199-1-dhinakaran.pandiyan@intel.com
parent 6486d84b

drivers/gpu/drm/i915/i915_drv.h

+1 −0
Original line number Diff line number Diff line
@@ -1073,6 +1073,7 @@ struct intel_vbt_data { 
	} edp;



	struct {

		bool enable;

		bool full_link;

		bool require_aux_wakeup;

		int idle_frames;

drivers/gpu/drm/i915/intel_bios.c

+1 −0
Original line number Diff line number Diff line
@@ -530,6 +530,7 @@ parse_driver_features(struct drm_i915_private *dev_priv, 
	 */

	if (!driver->drrs_enabled)

		dev_priv->vbt.drrs_type = DRRS_NOT_SUPPORTED;

	dev_priv->vbt.psr.enable = driver->psr_enabled;

}



static void

drivers/gpu/drm/i915/intel_psr.c

+5 −2
Original line number Diff line number Diff line
@@ -1173,9 +1173,12 @@ void intel_psr_init(struct drm_i915_private *dev_priv) 
	if (!dev_priv->psr.sink_support)

		return;



	if (i915_modparams.enable_psr == -1) {

		i915_modparams.enable_psr = dev_priv->vbt.psr.enable;



		/* Per platform default: all disabled. */

	if (i915_modparams.enable_psr == -1)

		i915_modparams.enable_psr = 0;

	}



	/* Set link_standby x link_off defaults */

	if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv))