Hans de Goede | a1a9868 | 2021-10-05 22:23:14 +0200 | [diff] [blame] | 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 | |
| 15 | struct drm_privacy_screen; |
| 16 | |
| 17 | #if IS_ENABLED(CONFIG_DRM_PRIVACY_SCREEN) |
| 18 | struct drm_privacy_screen *drm_privacy_screen_get(struct device *dev, |
| 19 | const char *con_id); |
| 20 | void drm_privacy_screen_put(struct drm_privacy_screen *priv); |
| 21 | |
| 22 | int drm_privacy_screen_set_sw_state(struct drm_privacy_screen *priv, |
| 23 | enum drm_privacy_screen_status sw_state); |
| 24 | void 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); |
Hans de Goede | 8a12b170 | 2021-10-05 22:23:16 +0200 | [diff] [blame] | 27 | |
| 28 | int drm_privacy_screen_register_notifier(struct drm_privacy_screen *priv, |
| 29 | struct notifier_block *nb); |
| 30 | int drm_privacy_screen_unregister_notifier(struct drm_privacy_screen *priv, |
| 31 | struct notifier_block *nb); |
Hans de Goede | a1a9868 | 2021-10-05 22:23:14 +0200 | [diff] [blame] | 32 | #else |
| 33 | static inline struct drm_privacy_screen *drm_privacy_screen_get(struct device *dev, |
| 34 | const char *con_id) |
| 35 | { |
| 36 | return ERR_PTR(-ENODEV); |
| 37 | } |
| 38 | static inline void drm_privacy_screen_put(struct drm_privacy_screen *priv) |
| 39 | { |
| 40 | } |
| 41 | static 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 | } |
| 46 | static 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 | } |
Hans de Goede | 8a12b170 | 2021-10-05 22:23:16 +0200 | [diff] [blame] | 53 | static inline int drm_privacy_screen_register_notifier(struct drm_privacy_screen *priv, |
| 54 | struct notifier_block *nb) |
| 55 | { |
| 56 | return -ENODEV; |
| 57 | } |
| 58 | static inline int drm_privacy_screen_unregister_notifier(struct drm_privacy_screen *priv, |
| 59 | struct notifier_block *nb) |
| 60 | { |
| 61 | return -ENODEV; |
| 62 | } |
Hans de Goede | a1a9868 | 2021-10-05 22:23:14 +0200 | [diff] [blame] | 63 | #endif |
| 64 | |
| 65 | #endif |