drm/i915: Remove runtime suspended boolean from intel_runtime_pm struct

It's not necessary to carry separate suspended status information in
intel_runtime_pm struct as this information is already in underlying device
structure. Remove it and use pm_runtime_suspended() to obtain suspended
status information when needed.

Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Imre Deak <imre.deak@intel.com>
Signed-off-by: Jouni Högander <jouni.hogander@intel.com>
Acked-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Imre Deak <imre.deak@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230913100430.3433969-1-jouni.hogander@intel.com

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

@@ -216,7 +216,7 @@ bool __intel_display_power_is_enabled(struct drm_i915_private *dev_priv,
 	struct i915_power_well *power_well;
 	bool is_enabled;
 
-	if (dev_priv->runtime_pm.suspended)
+	if (pm_runtime_suspended(dev_priv->drm.dev))
 		return false;
 
 	is_enabled = true;

drivers/gpu/drm/i915/i915_driver.c

@@ -1571,8 +1571,6 @@ static int intel_runtime_suspend(struct device *kdev)
 	if (root_pdev)
 		pci_d3cold_disable(root_pdev);
 
-	rpm->suspended = true;
-
 	/*
 	 * FIXME: We really should find a document that references the arguments
 	 * used below!
@@ -1623,7 +1621,6 @@ static int intel_runtime_resume(struct device *kdev)
 	disable_rpm_wakeref_asserts(rpm);
 
 	intel_opregion_notify_adapter(dev_priv, PCI_D0);
-	rpm->suspended = false;
 
 	root_pdev = pcie_find_root_port(pdev);
 	if (root_pdev)

drivers/gpu/drm/i915/i915_gpu_error.c

@@ -1972,7 +1972,7 @@ static void capture_gen(struct i915_gpu_coredump *error)
 	struct drm_i915_private *i915 = error->i915;
 
 	error->wakelock = atomic_read(&i915->runtime_pm.wakeref_count);
-	error->suspended = i915->runtime_pm.suspended;
+	error->suspended = pm_runtime_suspended(i915->drm.dev);
 
 	error->iommu = i915_vtd_active(i915);
 	error->reset_count = i915_reset_count(&i915->gpu_error);

drivers/gpu/drm/i915/intel_runtime_pm.c

@@ -652,7 +652,6 @@ void intel_runtime_pm_init_early(struct intel_runtime_pm *rpm)
 
 	rpm->kdev = kdev;
 	rpm->available = HAS_RUNTIME_PM(i915);
-	rpm->suspended = false;
 	atomic_set(&rpm->wakeref_count, 0);
 
 	init_intel_runtime_pm_wakeref(rpm);

drivers/gpu/drm/i915/intel_runtime_pm.h

@@ -6,6 +6,7 @@
 #ifndef __INTEL_RUNTIME_PM_H__
 #define __INTEL_RUNTIME_PM_H__
 
+#include <linux/pm_runtime.h>
 #include <linux/types.h>
 
 #include "intel_wakeref.h"
@@ -43,7 +44,6 @@ struct intel_runtime_pm {
 	atomic_t wakeref_count;
 	struct device *kdev; /* points to i915->drm.dev */
 	bool available;
-	bool suspended;
 	bool irqs_enabled;
 	bool no_wakeref_tracking;
 
@@ -110,7 +110,7 @@ intel_rpm_wakelock_count(int wakeref_count)
 static inline void
 assert_rpm_device_not_suspended(struct intel_runtime_pm *rpm)
 {
-	WARN_ONCE(rpm->suspended,
+	WARN_ONCE(pm_runtime_suspended(rpm->kdev),
 		  "Device suspended during HW access\n");
 }