cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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drm_dp_aux_bus.h (1740B)

      1/* SPDX-License-Identifier: GPL-2.0 */
      2/*
      3 * Copyright 2021 Google Inc.
      4 *
      5 * The DP AUX bus is used for devices that are connected over a DisplayPort
      6 * AUX bus. The devices on the far side of the bus are referred to as
      7 * endpoints in this code.
      8 */
      9
     10#ifndef _DP_AUX_BUS_H_
     11#define _DP_AUX_BUS_H_
     12
     13#include <linux/device.h>
     14#include <linux/mod_devicetable.h>
     15
     16/**
     17 * struct dp_aux_ep_device - Main dev structure for DP AUX endpoints
     18 *
     19 * This is used to instantiate devices that are connected via a DP AUX
     20 * bus. Usually the device is a panel, but conceivable other devices could
     21 * be hooked up there.
     22 */
     23struct dp_aux_ep_device {
     24	/** @dev: The normal dev pointer */
     25	struct device dev;
     26	/** @aux: Pointer to the aux bus */
     27	struct drm_dp_aux *aux;
     28};
     29
     30struct dp_aux_ep_driver {
     31	int (*probe)(struct dp_aux_ep_device *aux_ep);
     32	void (*remove)(struct dp_aux_ep_device *aux_ep);
     33	void (*shutdown)(struct dp_aux_ep_device *aux_ep);
     34	struct device_driver driver;
     35};
     36
     37static inline struct dp_aux_ep_device *to_dp_aux_ep_dev(struct device *dev)
     38{
     39	return container_of(dev, struct dp_aux_ep_device, dev);
     40}
     41
     42static inline struct dp_aux_ep_driver *to_dp_aux_ep_drv(struct device_driver *drv)
     43{
     44	return container_of(drv, struct dp_aux_ep_driver, driver);
     45}
     46
     47int of_dp_aux_populate_ep_devices(struct drm_dp_aux *aux);
     48void of_dp_aux_depopulate_ep_devices(struct drm_dp_aux *aux);
     49int devm_of_dp_aux_populate_ep_devices(struct drm_dp_aux *aux);
     50
     51#define dp_aux_dp_driver_register(aux_ep_drv) \
     52	__dp_aux_dp_driver_register(aux_ep_drv, THIS_MODULE)
     53int __dp_aux_dp_driver_register(struct dp_aux_ep_driver *aux_ep_drv,
     54				struct module *owner);
     55void dp_aux_dp_driver_unregister(struct dp_aux_ep_driver *aux_ep_drv);
     56
     57#endif /* _DP_AUX_BUS_H_ */