[PATCH 6/6] drm/i915/display: call DMC wakelock enable when DMC is loaded

[Luca Coelho]

Although the documentation says that this should be done in the first
modeset, it makes more sense to enable and disable it when DMC is
enabled and disabled, including during suspend and resume operations.

Add the calls to enable and disable DMC wakelock accordingly.

Signed-off-by: Luca Coelho <luciano.coelho at intel.com>
---
 drivers/gpu/drm/i915/display/intel_dmc.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/gpu/drm/i915/display/intel_dmc.c b/drivers/gpu/drm/i915/display/intel_dmc.c
index 85009c5ba488..d5d275849f4d 100644
--- a/drivers/gpu/drm/i915/display/intel_dmc.c
+++ b/drivers/gpu/drm/i915/display/intel_dmc.c
@@ -536,6 +536,8 @@ void intel_dmc_load_program(struct drm_i915_private *i915)
 	gen9_set_dc_state_debugmask(i915);
 
 	pipedmc_clock_gating_wa(i915, false);
+
+	intel_dmc_wl_enable(i915);
 }
 
 /**
@@ -553,6 +555,8 @@ void intel_dmc_disable_program(struct drm_i915_private *i915)
 	pipedmc_clock_gating_wa(i915, true);
 	disable_all_event_handlers(i915);
 	pipedmc_clock_gating_wa(i915, false);
+
+	intel_dmc_wl_disable(i915);
 }
 
 void assert_dmc_loaded(struct drm_i915_private *i915)
@@ -1085,6 +1089,8 @@ void intel_dmc_suspend(struct drm_i915_private *i915)
 	if (dmc)
 		flush_work(&dmc->work);
 
+	intel_dmc_wl_disable(i915);
+
 	/* Drop the reference held in case DMC isn't loaded. */
 	if (!intel_dmc_has_payload(i915))
 		intel_dmc_runtime_pm_put(i915);
@@ -1108,6 +1114,8 @@ void intel_dmc_resume(struct drm_i915_private *i915)
 	 */
 	if (!intel_dmc_has_payload(i915))
 		intel_dmc_runtime_pm_get(i915);
+
+	intel_dmc_wl_enable(i915);
 }
 
 /**
-- 
2.39.2