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118 lines
3.2 KiB
118 lines
3.2 KiB
/*
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* Copyright (c) 2020, The Linux Foundation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 and
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* only version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#ifndef __SDE_RECOVERY_MANAGER_H__
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#define __SDE_RECOVERY_MANAGER_H__
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#include <linux/list.h>
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#include <linux/kthread.h>
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#include <linux/platform_device.h>
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#include <linux/kobject.h>
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#include <drm/msm_drm.h>
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#include <linux/slab.h>
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#include <drm/drmP.h>
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/* MSM Recovery Manager related definitions */
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#define MAX_REC_NAME_LEN (16)
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/* MSM Recovery Manager Event Code */
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#define DRM_EVENT_SDE_UNDERRUN 0x80000008
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#define DRM_EVENT_SDE_SMMUFAULT 0x80000009
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#define DRM_EVENT_SDE_VSYNC_MISS 0x80000010
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#define DRM_EVENT_RECOVERY_SUCCESS 0x80000011
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#define DRM_EVENT_RECOVERY_FAILURE 0x80000012
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#define DRM_EVENT_BRIDGE_ERROR 0x80000013
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/*
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* struct sde_recovery_client - Client information
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* @name: name of the client.
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* @recovery_cb: recovery callback to recover the events reported.
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* @events: list of events that can be handled by client.
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* @num_events: number of events supported by the client.
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* @handle: opaque data to callback.
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* @list: link list
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*/
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struct sde_recovery_client {
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char name[MAX_REC_NAME_LEN];
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int (*recovery_cb)(void *handle, u32 event, struct drm_crtc *crtc);
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u32 *events;
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int num_events;
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void *handle;
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struct list_head list;
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};
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#if IS_ENABLED(CONFIG_SDE_RECOVERY_MANAGER)
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/*
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* Send a event for a crtc or all crtc to the recovery manager.
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* @dev DRM device
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* @event event
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* @crtc CRTC or NULL for all active CRTC
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*
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* Return value:
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* 0 Success
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* -EEXIST a same event for the same crtc has been queue and not processed
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* -EINVAL CRTC index out of the range
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* -ENOMEM out of memory
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*/
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int sde_recovery_set_event(struct drm_device *dev, u32 event,
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struct drm_crtc *crtc);
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/*
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* Register a new client to recovery manager.
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* @dev DRM device
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* @client client information
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*
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* Return value:
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* 0 Success
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* -EINVAL client name is NULL
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* -ENOENT recovery manager hasn't been initialized
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*/
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int sde_recovery_client_register(struct drm_device *dev,
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struct sde_recovery_client *client);
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/*
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* Unregister a existing client from recovery manager.
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* @dev DRM device
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* @client client information
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*
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* Return value:
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* 0 Success
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* -EINVAL client is NULL
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* -ENOENT recovery manager hasn't been initialized
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*/
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int sde_recovery_client_unregister(struct drm_device *dev,
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struct sde_recovery_client *client);
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#else
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static inline int sde_recovery_set_event(struct drm_device *dev, u32 event,
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struct drm_crtc *crtc)
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{
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return 0;
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}
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static inline int sde_recovery_client_register(struct drm_device *dev,
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struct sde_recovery_client *client)
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{
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return 0;
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}
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static inline int sde_recovery_client_unregister(struct drm_device *dev,
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struct sde_recovery_client *client)
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{
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return 0;
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}
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#endif
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#endif /* __SDE_RECOVERY_MANAGER_H__ */
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