drm/xe/display: Runtime pm wrappers for display parent interface

Implement runtime pm wrappers for xe driver and add them into display
parent interface.

v3:
  - drop useless include
  - drop xe_display_rpm_{get, put}_raw
v2:
  - move xe_display_rpm_interface code into xe_display_rpm.c
  - rename xe_rpm as xe_display_rpm

Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Jouni Högander <jouni.hogander@intel.com>
Link: https://patch.msgid.link/20251030202836.1815680-5-jouni.hogander@intel.com

diff --git a/drivers/gpu/drm/xe/display/xe_display.c b/drivers/gpu/drm/xe/display/xe_display.c
index 074341645960f6e60e16d54b5c28fd53cdcf0e52..7bfce5950a3ce3cd4d5ae8cd1e6a3c1a65947731 100644 (file)
--- a/drivers/gpu/drm/xe/display/xe_display.c
+++ b/drivers/gpu/drm/xe/display/xe_display.c
@@ -35,6 +35,7 @@
 #include "intel_hotplug.h"
 #include "intel_opregion.h"
 #include "skl_watermark.h"
+#include "xe_display_rpm.h"
 #include "xe_module.h"
 
 /* Ensure drm and display members are placed properly. */
@@ -517,6 +518,7 @@ static void display_device_remove(struct drm_device *dev, void *arg)
 }
 
 static const struct intel_display_parent_interface parent = {
+       .rpm = &xe_display_rpm_interface,
 };
 
 /**

diff --git a/drivers/gpu/drm/xe/display/xe_display_rpm.c b/drivers/gpu/drm/xe/display/xe_display_rpm.c
index 3825376e98ccd77e1d510d1624f44b355785f4f2..cae4e2fd36c7011cfb3733fa0b7090e3e6ddd8f9 100644 (file)
--- a/drivers/gpu/drm/xe/display/xe_display_rpm.c
+++ b/drivers/gpu/drm/xe/display/xe_display_rpm.c
@@ -1,6 +1,8 @@
 // SPDX-License-Identifier: MIT
 /* Copyright © 2025 Intel Corporation */
 
+#include <drm/intel/display_parent_interface.h>
+
 #include "intel_display_core.h"
 #include "intel_display_rpm.h"
 #include "xe_device.h"
@@ -71,3 +73,67 @@ void intel_display_rpm_assert_unblock(struct intel_display *display)
 {
        /* FIXME */
 }
+
+static struct ref_tracker *xe_display_rpm_get(const struct drm_device *drm)
+{
+       return xe_pm_runtime_resume_and_get(to_xe_device(drm)) ? INTEL_WAKEREF_DEF : NULL;
+}
+
+static struct ref_tracker *xe_display_rpm_get_if_in_use(const struct drm_device *drm)
+{
+       return xe_pm_runtime_get_if_in_use(to_xe_device(drm)) ? INTEL_WAKEREF_DEF : NULL;
+}
+
+static struct ref_tracker *xe_display_rpm_get_noresume(const struct drm_device *drm)
+{
+       xe_pm_runtime_get_noresume(to_xe_device(drm));
+
+       return INTEL_WAKEREF_DEF;
+}
+
+static void xe_display_rpm_put(const struct drm_device *drm, struct ref_tracker *wakeref)
+{
+       if (wakeref)
+               xe_pm_runtime_put(to_xe_device(drm));
+}
+
+static void xe_display_rpm_put_unchecked(const struct drm_device *drm)
+{
+       xe_pm_runtime_put(to_xe_device(drm));
+}
+
+static bool xe_display_rpm_suspended(const struct drm_device *drm)
+{
+       struct xe_device *xe = to_xe_device(drm);
+
+       return pm_runtime_suspended(xe->drm.dev);
+}
+
+static void xe_display_rpm_assert_held(const struct drm_device *drm)
+{
+       /* FIXME */
+}
+
+static void xe_display_rpm_assert_block(const struct drm_device *drm)
+{
+       /* FIXME */
+}
+
+static void xe_display_rpm_assert_unblock(const struct drm_device *drm)
+{
+       /* FIXME */
+}
+
+const struct intel_display_rpm_interface xe_display_rpm_interface = {
+       .get = xe_display_rpm_get,
+       .get_raw = xe_display_rpm_get,
+       .get_if_in_use = xe_display_rpm_get_if_in_use,
+       .get_noresume = xe_display_rpm_get_noresume,
+       .put = xe_display_rpm_put,
+       .put_raw = xe_display_rpm_put,
+       .put_unchecked = xe_display_rpm_put_unchecked,
+       .suspended = xe_display_rpm_suspended,
+       .assert_held = xe_display_rpm_assert_held,
+       .assert_block = xe_display_rpm_assert_block,
+       .assert_unblock = xe_display_rpm_assert_unblock
+};

diff --git a/drivers/gpu/drm/xe/display/xe_display_rpm.h b/drivers/gpu/drm/xe/display/xe_display_rpm.h
new file mode 100644 (file)
index 0000000..0bf9d31
--- /dev/null
+++ b/drivers/gpu/drm/xe/display/xe_display_rpm.h
@@ -0,0 +1,11 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2025 Intel Corporation
+ */
+
+#ifndef _XE_DISPLAY_RPM_H_
+#define _XE_DISPLAY_RPM_H_
+
+extern const struct intel_display_rpm_interface xe_display_rpm_interface;
+
+#endif /* _XE_DISPLAY_RPM_H_ */