1/* SPDX-License-Identifier: MIT */
2/*
3 * Copyright (C) 2020 Red Hat, Inc.
4 *
5 * Authors:
6 * Hans de Goede <hdegoede@redhat.com>
7 */
8
9#ifndef __DRM_PRIVACY_SCREEN_CONSUMER_H__
10#define __DRM_PRIVACY_SCREEN_CONSUMER_H__
11
12#include <linux/device.h>
13#include <drm/drm_connector.h>
14
15struct drm_privacy_screen;
16
17#if IS_ENABLED(CONFIG_DRM_PRIVACY_SCREEN)
18struct drm_privacy_screen *drm_privacy_screen_get(struct device *dev,
19 const char *con_id);
20void drm_privacy_screen_put(struct drm_privacy_screen *priv);
21
22int drm_privacy_screen_set_sw_state(struct drm_privacy_screen *priv,
23 enum drm_privacy_screen_status sw_state);
24void drm_privacy_screen_get_state(struct drm_privacy_screen *priv,
25 enum drm_privacy_screen_status *sw_state_ret,
26 enum drm_privacy_screen_status *hw_state_ret);
27
28int drm_privacy_screen_register_notifier(struct drm_privacy_screen *priv,
29 struct notifier_block *nb);
30int drm_privacy_screen_unregister_notifier(struct drm_privacy_screen *priv,
31 struct notifier_block *nb);
32#else
33static inline struct drm_privacy_screen *drm_privacy_screen_get(struct device *dev,
34 const char *con_id)
35{
36 return ERR_PTR(error: -ENODEV);
37}
38static inline void drm_privacy_screen_put(struct drm_privacy_screen *priv)
39{
40}
41static inline int drm_privacy_screen_set_sw_state(struct drm_privacy_screen *priv,
42 enum drm_privacy_screen_status sw_state)
43{
44 return -ENODEV;
45}
46static inline void drm_privacy_screen_get_state(struct drm_privacy_screen *priv,
47 enum drm_privacy_screen_status *sw_state_ret,
48 enum drm_privacy_screen_status *hw_state_ret)
49{
50 *sw_state_ret = PRIVACY_SCREEN_DISABLED;
51 *hw_state_ret = PRIVACY_SCREEN_DISABLED;
52}
53static inline int drm_privacy_screen_register_notifier(struct drm_privacy_screen *priv,
54 struct notifier_block *nb)
55{
56 return -ENODEV;
57}
58static inline int drm_privacy_screen_unregister_notifier(struct drm_privacy_screen *priv,
59 struct notifier_block *nb)
60{
61 return -ENODEV;
62}
63#endif
64
65#endif
66