display_parent_interface.h

 1/* SPDX-License-Identifier: MIT */
 2/* Copyright © 2025 Intel Corporation x*/
 3
 4#ifndef __DISPLAY_PARENT_INTERFACE_H__
 5#define __DISPLAY_PARENT_INTERFACE_H__
 6
 7#include <linux/types.h>
 8
 9struct drm_device;
10struct ref_tracker;
11
12struct intel_display_rpm_interface {
13	struct ref_tracker *(*get)(const struct drm_device *drm);
14	struct ref_tracker *(*get_raw)(const struct drm_device *drm);
15	struct ref_tracker *(*get_if_in_use)(const struct drm_device *drm);
16	struct ref_tracker *(*get_noresume)(const struct drm_device *drm);
17
18	void (*put)(const struct drm_device *drm, struct ref_tracker *wakeref);
19	void (*put_raw)(const struct drm_device *drm, struct ref_tracker *wakeref);
20	void (*put_unchecked)(const struct drm_device *drm);
21
22	bool (*suspended)(const struct drm_device *drm);
23	void (*assert_held)(const struct drm_device *drm);
24	void (*assert_block)(const struct drm_device *drm);
25	void (*assert_unblock)(const struct drm_device *drm);
26};
27
28/**
29 * struct intel_display_parent_interface - services parent driver provides to display
30 *
31 * The parent, or core, driver provides a pointer to this structure to display
32 * driver when calling intel_display_device_probe(). The display driver uses it
33 * to access services provided by the parent driver. The structure may contain
34 * sub-struct pointers to group function pointers by functionality.
35 *
36 * All function and sub-struct pointers must be initialized and callable unless
37 * explicitly marked as "optional" below. The display driver will only NULL
38 * check the optional pointers.
39 */
40struct intel_display_parent_interface {
41	/** @rpm: Runtime PM functions */
42	const struct intel_display_rpm_interface *rpm;
43};
44
45#endif