[PATCH v2 3/3] drm/xe: Use the encoder suspend helper also used by the i915 driver

[Imre Deak <imre.deak@intel.com>]

Use the suspend encoders helper which is also used by the i915 driver.
This fixes an issue in the xe driver where the encoder
suspend_complete() hook is not called and was an overlook when this hook
was added in commit b61fad5f7e5d ("drm/i915/tc: Call TypeC port
flush_work/cleanup without modeset locks held") for i915, but not added
to the xe driver (which was still in a separate source tree at the above
point).

v2: Fix checkpatch warn in commit log. (Rodrigo)

Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
---
 drivers/gpu/drm/xe/display/xe_display.c | 18 ++----------------
 1 file changed, 2 insertions(+), 16 deletions(-)

diff --git a/drivers/gpu/drm/xe/display/xe_display.c b/drivers/gpu/drm/xe/display/xe_display.c
index 78cccbe289475..8b83dcff72e17 100644
--- a/drivers/gpu/drm/xe/display/xe_display.c
+++ b/drivers/gpu/drm/xe/display/xe_display.c
@@ -23,6 +23,7 @@
 #include "intel_display_types.h"
 #include "intel_dmc.h"
 #include "intel_dp.h"
+#include "intel_encoder.h"
 #include "intel_fbdev.h"
 #include "intel_hdcp.h"
 #include "intel_hotplug.h"
@@ -270,21 +271,6 @@ void xe_display_irq_postinstall(struct xe_device *xe, struct xe_gt *gt)
 		gen11_de_irq_postinstall(xe);
 }
 
-static void intel_suspend_encoders(struct xe_device *xe)
-{
-	struct drm_device *dev = &xe->drm;
-	struct intel_encoder *encoder;
-
-	if (has_display(xe))
-		return;
-
-	drm_modeset_lock_all(dev);
-	for_each_intel_encoder(dev, encoder)
-		if (encoder->suspend)
-			encoder->suspend(encoder);
-	drm_modeset_unlock_all(dev);
-}
-
 static bool suspend_to_idle(void)
 {
 #if IS_ENABLED(CONFIG_ACPI_SLEEP)
@@ -315,7 +301,7 @@ void xe_display_pm_suspend(struct xe_device *xe, bool runtime)
 
 	intel_hpd_cancel_work(xe);
 
-	intel_suspend_encoders(xe);
+	intel_encoder_suspend_all(&xe->display);
 
 	intel_opregion_suspend(xe, s2idle ? PCI_D1 : PCI_D3cold);
 
-- 
2.43.3