[PATCH] drm/xe: Use i915-display shutdown sequence directly

[Rodrigo Vivi]

Start the xe-i915-display reconciliation by using the same
shutdown sequences.

v2: include the stubs for !CONFIG_DRM_XE_DISPLAY (Kunit)

Reviewed-by: Jonathan Cavitt <jonathan.cavitt at intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi at intel.com>
---
 drivers/gpu/drm/xe/display/xe_display.c | 46 +++++++------------------
 drivers/gpu/drm/xe/display/xe_display.h | 10 +++---
 drivers/gpu/drm/xe/xe_device.c          |  4 ++-
 3 files changed, 22 insertions(+), 38 deletions(-)

diff --git a/drivers/gpu/drm/xe/display/xe_display.c b/drivers/gpu/drm/xe/display/xe_display.c
index 4759c3cf5915..29676652bc54 100644
--- a/drivers/gpu/drm/xe/display/xe_display.c
+++ b/drivers/gpu/drm/xe/display/xe_display.c
@@ -10,7 +10,6 @@
 
 #include <drm/drm_drv.h>
 #include <drm/drm_managed.h>
-#include <drm/drm_atomic_helper.h>
 #include <drm/drm_probe_helper.h>
 #include <uapi/drm/xe_drm.h>
 
@@ -357,32 +356,26 @@ void xe_display_pm_suspend(struct xe_device *xe)
 
 void xe_display_pm_shutdown(struct xe_device *xe)
 {
-	struct intel_display *display = &xe->display;
-
 	if (!xe->info.probe_display)
 		return;
 
-	intel_power_domains_disable(xe);
-	intel_fbdev_set_suspend(&xe->drm, FBINFO_STATE_SUSPENDED, true);
-	if (has_display(xe)) {
-		drm_kms_helper_poll_disable(&xe->drm);
-		intel_display_driver_disable_user_access(xe);
-
-		drm_atomic_helper_shutdown(&xe->drm);
-	}
-
-	intel_dp_mst_suspend(xe);
-	intel_hpd_cancel_work(xe);
+	intel_display_driver_shutdown(xe);
+}
 
-	if (has_display(xe))
-		intel_display_driver_suspend_access(xe);
+void xe_display_pm_shutdown_noirq(struct xe_device *xe)
+{
+	if (!xe->info.probe_display)
+		return;
 
-	intel_encoder_suspend_all(display);
-	intel_encoder_shutdown_all(display);
+	intel_display_driver_shutdown_noirq(xe);
+}
 
-	intel_opregion_suspend(display, PCI_D3cold);
+void xe_display_pm_shutdown_noaccel(struct xe_device *xe)
+{
+	if (!xe->info.probe_display)
+		return;
 
-	intel_dmc_suspend(display);
+	intel_display_driver_shutdown_nogem(xe);
 }
 
 void xe_display_pm_runtime_suspend(struct xe_device *xe)
@@ -408,19 +401,6 @@ void xe_display_pm_suspend_late(struct xe_device *xe)
 	intel_display_power_suspend_late(xe, s2idle);
 }
 
-void xe_display_pm_shutdown_late(struct xe_device *xe)
-{
-	if (!xe->info.probe_display)
-		return;
-
-	/*
-	 * The only requirement is to reboot with display DC states disabled,
-	 * for now leaving all display power wells in the INIT power domain
-	 * enabled.
-	 */
-	intel_power_domains_driver_remove(xe);
-}
-
 void xe_display_pm_resume_early(struct xe_device *xe)
 {
 	if (!xe->info.probe_display)
diff --git a/drivers/gpu/drm/xe/display/xe_display.h b/drivers/gpu/drm/xe/display/xe_display.h
index 17afa537aee5..f139a88da3a5 100644
--- a/drivers/gpu/drm/xe/display/xe_display.h
+++ b/drivers/gpu/drm/xe/display/xe_display.h
@@ -35,9 +35,10 @@ void xe_display_irq_reset(struct xe_device *xe);
 void xe_display_irq_postinstall(struct xe_device *xe, struct xe_gt *gt);
 
 void xe_display_pm_suspend(struct xe_device *xe);
-void xe_display_pm_shutdown(struct xe_device *xe);
 void xe_display_pm_suspend_late(struct xe_device *xe);
-void xe_display_pm_shutdown_late(struct xe_device *xe);
+void xe_display_pm_shutdown(struct xe_device *xe);
+void xe_display_pm_shutdown_noirq(struct xe_device *xe);
+void xe_display_pm_shutdown_noaccel(struct xe_device *xe);
 void xe_display_pm_resume_early(struct xe_device *xe);
 void xe_display_pm_resume(struct xe_device *xe);
 void xe_display_pm_runtime_suspend(struct xe_device *xe);
@@ -68,9 +69,10 @@ static inline void xe_display_irq_reset(struct xe_device *xe) {}
 static inline void xe_display_irq_postinstall(struct xe_device *xe, struct xe_gt *gt) {}
 
 static inline void xe_display_pm_suspend(struct xe_device *xe) {}
-static inline void xe_display_pm_shutdown(struct xe_device *xe) {}
 static inline void xe_display_pm_suspend_late(struct xe_device *xe) {}
-static inline void xe_display_pm_shutdown_late(struct xe_device *xe) {}
+static inline void xe_display_pm_shutdown(struct xe_device *xe) {}
+static inline void xe_display_pm_shutdown_noirq(struct xe_device *xe) {}
+static inline void xe_display_pm_shutdown_noaccel(struct xe_device *xe) {}
 static inline void xe_display_pm_resume_early(struct xe_device *xe) {}
 static inline void xe_display_pm_resume(struct xe_device *xe) {}
 static inline void xe_display_pm_runtime_suspend(struct xe_device *xe) {}
diff --git a/drivers/gpu/drm/xe/xe_device.c b/drivers/gpu/drm/xe/xe_device.c
index 0e2dd691bdae..f4ae8e11ac53 100644
--- a/drivers/gpu/drm/xe/xe_device.c
+++ b/drivers/gpu/drm/xe/xe_device.c
@@ -819,10 +819,12 @@ void xe_device_shutdown(struct xe_device *xe)
 
 		xe_irq_suspend(xe);
 
+		xe_display_pm_shutdown_noirq(xe);
+
 		for_each_gt(gt, xe, id)
 			xe_gt_shutdown(gt);
 
-		xe_display_pm_shutdown_late(xe);
+		xe_display_pm_shutdown_noaccel(xe);
 	} else {
 		/* BOOM! */
 		__xe_driver_flr(xe);
-- 
2.47.0