[PATCH 1/3] drm/i915/display: Move shutdown sequences under display driver

[Rodrigo Vivi <rodrigo.vivi@intel.com>]

Move display related shutdown sequences from i915_driver to
intel_display_driver.

No functional change. Just taking the right ownership and
start some reconciliation of them between i915 and Xe.

v2: - Add missing _nogem caller (Imre)
    - Fix comment style (Jonathan)

Reviewed-by: Jonathan Cavitt <jonathan.cavitt@intel.com> #v1
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
---
 .../drm/i915/display/intel_display_driver.c   | 40 +++++++++++++++++++
 .../drm/i915/display/intel_display_driver.h   |  3 ++
 drivers/gpu/drm/i915/i915_driver.c            | 27 ++-----------
 3 files changed, 47 insertions(+), 23 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_display_driver.c b/drivers/gpu/drm/i915/display/intel_display_driver.c
index 06a60be649ee..ee2cccff6e5e 100644
--- a/drivers/gpu/drm/i915/display/intel_display_driver.c
+++ b/drivers/gpu/drm/i915/display/intel_display_driver.c
@@ -39,6 +39,7 @@
 #include "intel_dp_tunnel.h"
 #include "intel_dpll.h"
 #include "intel_dpll_mgr.h"
+#include "intel_encoder.h"
 #include "intel_fb.h"
 #include "intel_fbc.h"
 #include "intel_fbdev.h"
@@ -762,3 +763,42 @@ void intel_display_driver_resume(struct drm_i915_private *i915)
 	if (state)
 		drm_atomic_state_put(state);
 }
+
+void intel_display_driver_shutdown(struct drm_i915_private *i915)
+{
+	intel_power_domains_disable(i915);
+
+	intel_fbdev_set_suspend(&i915->drm, FBINFO_STATE_SUSPENDED, true);
+	if (HAS_DISPLAY(i915)) {
+		drm_kms_helper_poll_disable(&i915->drm);
+		intel_display_driver_disable_user_access(i915);
+
+		drm_atomic_helper_shutdown(&i915->drm);
+	}
+
+	intel_dp_mst_suspend(i915);
+}
+
+void intel_display_driver_shutdown_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);
+	intel_encoder_shutdown_all(&i915->display);
+
+	intel_dmc_suspend(&i915->display);
+}
+
+void intel_display_driver_shutdown_nogem(struct drm_i915_private *i915)
+{
+	/*
+	 * 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(i915);
+}
diff --git a/drivers/gpu/drm/i915/display/intel_display_driver.h b/drivers/gpu/drm/i915/display/intel_display_driver.h
index 42cc4af6d3fd..1ee37fb58d38 100644
--- a/drivers/gpu/drm/i915/display/intel_display_driver.h
+++ b/drivers/gpu/drm/i915/display/intel_display_driver.h
@@ -26,6 +26,9 @@ 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_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);
+void intel_display_driver_shutdown_nogem(struct drm_i915_private *i915);
 
 /* interface for intel_display_reset.c */
 int __intel_display_driver_resume(struct drm_i915_private *i915,
diff --git a/drivers/gpu/drm/i915/i915_driver.c b/drivers/gpu/drm/i915/i915_driver.c
index 2013962e446c..3b241054ceb5 100644
--- a/drivers/gpu/drm/i915/i915_driver.c
+++ b/drivers/gpu/drm/i915/i915_driver.c
@@ -945,43 +945,24 @@ void i915_driver_shutdown(struct drm_i915_private *i915)
 {
 	disable_rpm_wakeref_asserts(&i915->runtime_pm);
 	intel_runtime_pm_disable(&i915->runtime_pm);
-	intel_power_domains_disable(i915);
 
-	intel_fbdev_set_suspend(&i915->drm, FBINFO_STATE_SUSPENDED, true);
-	if (HAS_DISPLAY(i915)) {
-		drm_kms_helper_poll_disable(&i915->drm);
-		intel_display_driver_disable_user_access(i915);
-
-		drm_atomic_helper_shutdown(&i915->drm);
-	}
-
-	intel_dp_mst_suspend(i915);
+	intel_display_driver_shutdown(i915);
 
 	intel_irq_suspend(i915);
-	intel_hpd_cancel_work(i915);
-
-	if (HAS_DISPLAY(i915))
-		intel_display_driver_suspend_access(i915);
 
-	intel_encoder_suspend_all(&i915->display);
-	intel_encoder_shutdown_all(&i915->display);
-
-	intel_dmc_suspend(&i915->display);
+	intel_display_driver_shutdown_noirq(i915);
 
 	i915_gem_suspend(i915);
 
 	/*
-	 * The only requirement is to reboot with display DC states disabled,
-	 * for now leaving all display power wells in the INIT power domain
-	 * enabled.
-	 *
 	 * TODO:
 	 * - unify the pci_driver::shutdown sequence here with the
 	 *   pci_driver.driver.pm.poweroff,poweroff_late sequence.
 	 * - unify the driver remove and system/runtime suspend sequences with
 	 *   the above unified shutdown/poweroff sequence.
 	 */
-	intel_power_domains_driver_remove(i915);
+	intel_display_driver_shutdown_nogem(i915);
+
 	enable_rpm_wakeref_asserts(&i915->runtime_pm);
 
 	intel_runtime_pm_driver_last_release(&i915->runtime_pm);
-- 
2.47.0