drm_privacy_screen_driver.h

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/* SPDX-License-Identifier: MIT */
/*
 * Copyright (C) 2020 Red Hat, Inc.
 *
 * Authors:
 * Hans de Goede <hdegoede@redhat.com>
 */
 
#ifndef __DRM_PRIVACY_SCREEN_DRIVER_H__
#define __DRM_PRIVACY_SCREEN_DRIVER_H__
 
#include <linux/device.h>
#include <linux/list.h>
#include <linux/mutex.h>
#include <drm/drm_connector.h>
 
struct drm_privacy_screen;
 
struct drm_privacy_screen_ops {
    int (*set_sw_state)(struct drm_privacy_screen *priv,
                enum drm_privacy_screen_status sw_state);
    void (*get_hw_state)(struct drm_privacy_screen *priv);
};
 
struct drm_privacy_screen {
    struct device dev;
    struct mutex lock;
    struct list_head list;
    struct blocking_notifier_head notifier_head;
    const struct drm_privacy_screen_ops *ops;
    enum drm_privacy_screen_status sw_state;
    enum drm_privacy_screen_status hw_state;
    void *drvdata;
};
 
static inline
void *drm_privacy_screen_get_drvdata(struct drm_privacy_screen *priv)
{
    return priv->drvdata;
}
 
struct drm_privacy_screen *drm_privacy_screen_register(
    struct device *parent, const struct drm_privacy_screen_ops *ops,
    void *data);
void drm_privacy_screen_unregister(struct drm_privacy_screen *priv);
 
void drm_privacy_screen_call_notifier_chain(struct drm_privacy_screen *priv);
 
#endif