drm/i915: Remove i915_drm_suspend_mode

enum i915_drm_suspend_mode suspend_mode is only used in
intel_display_power, while we only care about whether we perform a
s2idle. Remove it and use a simple bool.

v2: Rebase

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com> # v1
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230529105900.1942814-1-jani.nikula@intel.com

Author: mlankhorst

drivers/gpu/drm/i915/display/intel_display_power.c

@@ -2031,16 +2031,15 @@ void intel_power_domains_disable(struct drm_i915_private *i915)
 /**
  * intel_power_domains_suspend - suspend power domain state
  * @i915: i915 device instance
- * @suspend_mode: specifies the target suspend state (idle, mem, hibernation)
+ * @s2idle: specifies whether we go to idle, or deeper sleep
  *
  * This function prepares the hardware power domain state before entering
  * system suspend.
  *
  * It must be called with power domains already disabled (after a call to
  * intel_power_domains_disable()) and paired with intel_power_domains_resume().
  */
-void intel_power_domains_suspend(struct drm_i915_private *i915,
-				 enum i915_drm_suspend_mode suspend_mode)
+void intel_power_domains_suspend(struct drm_i915_private *i915, bool s2idle)
 {
 	struct i915_power_domains *power_domains = &i915->display.power.domains;
 	intel_wakeref_t wakeref __maybe_unused =
@@ -2055,8 +2054,7 @@ void intel_power_domains_suspend(struct drm_i915_private *i915,
 	 * resources as required and also enable deeper system power states
 	 * that would be blocked if the firmware was inactive.
 	 */
-	if (!(power_domains->allowed_dc_mask & DC_STATE_EN_DC9) &&
-	    suspend_mode == I915_DRM_SUSPEND_IDLE &&
+	if (!(power_domains->allowed_dc_mask & DC_STATE_EN_DC9) && s2idle &&
 	    intel_dmc_has_payload(i915)) {
 		intel_display_power_flush_work(i915);
 		intel_power_domains_verify_state(i915);

drivers/gpu/drm/i915/display/intel_display_power.h

@@ -171,8 +171,7 @@ void intel_power_domains_init_hw(struct drm_i915_private *dev_priv, bool resume)
 void intel_power_domains_driver_remove(struct drm_i915_private *dev_priv);
 void intel_power_domains_enable(struct drm_i915_private *dev_priv);
 void intel_power_domains_disable(struct drm_i915_private *dev_priv);
-void intel_power_domains_suspend(struct drm_i915_private *dev_priv,
-				 enum i915_drm_suspend_mode);
+void intel_power_domains_suspend(struct drm_i915_private *dev_priv, bool s2idle);
 void intel_power_domains_resume(struct drm_i915_private *dev_priv);
 void intel_power_domains_sanitize_state(struct drm_i915_private *dev_priv);
 

drivers/gpu/drm/i915/i915_driver.c

@@ -1118,25 +1118,14 @@ static int i915_drm_suspend(struct drm_device *dev)
 	return 0;
 }
 
-static enum i915_drm_suspend_mode
-get_suspend_mode(struct drm_i915_private *dev_priv, bool hibernate)
-{
-	if (hibernate)
-		return I915_DRM_SUSPEND_HIBERNATE;
-
-	if (suspend_to_idle(dev_priv))
-		return I915_DRM_SUSPEND_IDLE;
-
-	return I915_DRM_SUSPEND_MEM;
-}
-
 static int i915_drm_suspend_late(struct drm_device *dev, bool hibernation)
 {
 	struct drm_i915_private *dev_priv = to_i915(dev);
 	struct pci_dev *pdev = to_pci_dev(dev_priv->drm.dev);
 	struct intel_runtime_pm *rpm = &dev_priv->runtime_pm;
 	struct intel_gt *gt;
 	int ret, i;
+	bool s2idle = !hibernation && suspend_to_idle(dev_priv);
 
 	disable_rpm_wakeref_asserts(rpm);
 
@@ -1147,8 +1136,7 @@ static int i915_drm_suspend_late(struct drm_device *dev, bool hibernation)
 	for_each_gt(gt, dev_priv, i)
 		intel_uncore_suspend(gt->uncore);
 
-	intel_power_domains_suspend(dev_priv,
-				    get_suspend_mode(dev_priv, hibernation));
+	intel_power_domains_suspend(dev_priv, s2idle);
 
 	intel_display_power_suspend_late(dev_priv);
 

drivers/gpu/drm/i915/intel_runtime_pm.h

@@ -16,12 +16,6 @@ struct device;
 struct drm_i915_private;
 struct drm_printer;
 
-enum i915_drm_suspend_mode {
-	I915_DRM_SUSPEND_IDLE,
-	I915_DRM_SUSPEND_MEM,
-	I915_DRM_SUSPEND_HIBERNATE,
-};
-
 /*
  * This struct helps tracking the state needed for runtime PM, which puts the
  * device in PCI D3 state. Notice that when this happens, nothing on the