[PATCH 08/31] drm/i915/display: Move suspend sequences to intel_display_driver

[Rodrigo Vivi <rodrigo.vivi@xxxxxxxxx>]

The goal is to reconcile the Xe and i915 PM functions.
Start by moving the display sequences from i915_drv towards
intel_display_driver.

Signed-off-by: Rodrigo Vivi <rodrigo.vivi@xxxxxxxxx>
---
 .../drm/i915/display/intel_display_driver.c   | 20 +++++++++++++++++++
 .../drm/i915/display/intel_display_driver.h   |  3 +++
 drivers/gpu/drm/i915/i915_driver.c            | 14 ++-----------
 drivers/gpu/drm/xe/display/xe_fb_pin.c        |  4 ++++
 4 files changed, 29 insertions(+), 12 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_display_driver.c b/drivers/gpu/drm/i915/display/intel_display_driver.c
index 51fc1c148283..42624bf80f91 100644
--- a/drivers/gpu/drm/i915/display/intel_display_driver.c
+++ b/drivers/gpu/drm/i915/display/intel_display_driver.c
@@ -36,6 +36,7 @@
 #include "intel_dkl_phy.h"
 #include "intel_dmc.h"
 #include "intel_dp.h"
+#include "intel_dpt.h"
 #include "intel_dp_tunnel.h"
 #include "intel_dpll.h"
 #include "intel_dpll_mgr.h"
@@ -682,6 +683,25 @@ int intel_display_driver_suspend(struct drm_i915_private *i915)
 	return ret;
 }
 
+void intel_display_driver_suspend_noirq(struct drm_i915_private *i915)
+{
+	intel_hpd_cancel_work(i915);
+
+	if (HAS_DISPLAY(i915))
+		intel_display_driver_suspend_access(i915);
+
+	intel_encoder_suspend_all(&i915->display);
+
+	/* Must be called before GGTT is suspended. */
+	intel_dpt_suspend(i915);
+}
+
+void intel_display_driver_suspend_noggtt(struct intel_display *display, bool s2idle)
+{
+	intel_opregion_suspend(display, s2idle ? PCI_D1 : PCI_D3cold);
+	intel_dmc_suspend(display);
+}
+
 int
 __intel_display_driver_resume(struct drm_i915_private *i915,
 			      struct drm_atomic_state *state,
diff --git a/drivers/gpu/drm/i915/display/intel_display_driver.h b/drivers/gpu/drm/i915/display/intel_display_driver.h
index 1ee37fb58d38..179fbb86923a 100644
--- a/drivers/gpu/drm/i915/display/intel_display_driver.h
+++ b/drivers/gpu/drm/i915/display/intel_display_driver.h
@@ -12,6 +12,7 @@ struct drm_atomic_state;
 struct drm_i915_private;
 struct drm_modeset_acquire_ctx;
 struct pci_dev;
+struct intel_display;
 
 bool intel_display_driver_probe_defer(struct pci_dev *pdev);
 void intel_display_driver_init_hw(struct drm_i915_private *i915);
@@ -25,6 +26,8 @@ void intel_display_driver_remove_noirq(struct drm_i915_private *i915);
 void intel_display_driver_remove_nogem(struct drm_i915_private *i915);
 void intel_display_driver_unregister(struct drm_i915_private *i915);
 int intel_display_driver_suspend(struct drm_i915_private *i915);
+void intel_display_driver_suspend_noirq(struct drm_i915_private *i915);
+void intel_display_driver_suspend_noggtt(struct intel_display *display, bool s2idle);
 void intel_display_driver_resume(struct drm_i915_private *i915);
 void intel_display_driver_shutdown(struct drm_i915_private *i915);
 void intel_display_driver_shutdown_noirq(struct drm_i915_private *i915);
diff --git a/drivers/gpu/drm/i915/i915_driver.c b/drivers/gpu/drm/i915/i915_driver.c
index d166a8164b42..ac8bf00458b5 100644
--- a/drivers/gpu/drm/i915/i915_driver.c
+++ b/drivers/gpu/drm/i915/i915_driver.c
@@ -996,7 +996,6 @@ static int i915_drm_suspend(struct drm_device *dev)
 	struct drm_i915_private *dev_priv = to_i915(dev);
 	struct intel_display *display = &dev_priv->display;
 	struct pci_dev *pdev = to_pci_dev(dev_priv->drm.dev);
-	pci_power_t opregion_target_state;
 
 	disable_rpm_wakeref_asserts(&dev_priv->runtime_pm);
 
@@ -1014,26 +1013,17 @@ static int i915_drm_suspend(struct drm_device *dev)
 	intel_display_driver_suspend(dev_priv);
 
 	intel_irq_suspend(dev_priv);
-	intel_hpd_cancel_work(dev_priv);
 
-	if (HAS_DISPLAY(dev_priv))
-		intel_display_driver_suspend_access(dev_priv);
-
-	intel_encoder_suspend_all(&dev_priv->display);
+	intel_display_driver_suspend_noirq(dev_priv);
 
-	/* Must be called before GGTT is suspended. */
-	intel_dpt_suspend(dev_priv);
 	i915_ggtt_suspend(to_gt(dev_priv)->ggtt);
 
 	i9xx_display_sr_save(dev_priv);
 
-	opregion_target_state = suspend_to_idle(dev_priv) ? PCI_D1 : PCI_D3cold;
-	intel_opregion_suspend(display, opregion_target_state);
+	intel_display_driver_suspend_noggtt(display, suspend_to_idle(dev_priv));
 
 	dev_priv->suspend_count++;
 
-	intel_dmc_suspend(display);
-
 	enable_rpm_wakeref_asserts(&dev_priv->runtime_pm);
 
 	i915_gem_drain_freed_objects(dev_priv);
diff --git a/drivers/gpu/drm/xe/display/xe_fb_pin.c b/drivers/gpu/drm/xe/display/xe_fb_pin.c
index 79dbbbe03c7f..49dc91bdbcb0 100644
--- a/drivers/gpu/drm/xe/display/xe_fb_pin.c
+++ b/drivers/gpu/drm/xe/display/xe_fb_pin.c
@@ -408,3 +408,7 @@ u64 intel_dpt_offset(struct i915_vma *dpt_vma)
 {
 	return 0;
 }
+
+void intel_dpt_suspend(struct xe_device *xe)
+{
+}
-- 
2.46.0