/* SPDX-License-Identifier: GPL-2.0 */ /* * (C) COPYRIGHT 2016 ARM Limited. All rights reserved. * Author: Brian Starkey <brian.starkey@arm.com> * * This program is free software and is provided to you under the terms of the * GNU General Public License version 2 as published by the Free Software * Foundation, and any use by you of this program is subject to the terms * of such GNU licence.
*/
/** * @encoder: Internal encoder used by the connector to fulfill * the DRM framework requirements. The users of the * @drm_writeback_connector control the behaviour of the @encoder * by passing the @enc_funcs parameter to drm_writeback_connector_init() * function. * For users of drm_writeback_connector_init_with_encoder(), this field * is not valid as the encoder is managed within their drivers.
*/ struct drm_encoder encoder;
/** * @pixel_formats_blob_ptr: * * DRM blob property data for the pixel formats list on writeback * connectors * See also drm_writeback_connector_init()
*/ struct drm_property_blob *pixel_formats_blob_ptr;
/** * @job_queue: * * Holds a list of a connector's writeback jobs; the last item is the * most recent. The first item may be either waiting for the hardware * to begin writing, or currently being written. * * See also: drm_writeback_queue_job() and * drm_writeback_signal_completion()
*/ struct list_head job_queue;
/** * @fence_context: * * timeline context used for fence operations.
*/ unsignedint fence_context; /** * @fence_lock: * * spinlock to protect the fences in the fence_context.
*/
spinlock_t fence_lock; /** * @fence_seqno: * * Seqno variable used as monotonic counter for the fences * created on the connector's timeline.
*/ unsignedlong fence_seqno; /** * @timeline_name: * * The name of the connector's fence timeline.
*/ char timeline_name[32];
};
/** * struct drm_writeback_job - DRM writeback job
*/ struct drm_writeback_job { /** * @connector: * * Back-pointer to the writeback connector associated with the job
*/ struct drm_writeback_connector *connector;
/** * @prepared: * * Set when the job has been prepared with drm_writeback_prepare_job()
*/ bool prepared;
/** * @cleanup_work: * * Used to allow drm_writeback_signal_completion to defer dropping the * framebuffer reference to a workqueue
*/ struct work_struct cleanup_work;
/** * @list_entry: * * List item for the writeback connector's @job_queue
*/ struct list_head list_entry;
/** * @fb: * * Framebuffer to be written to by the writeback connector. Do not set * directly, use drm_writeback_set_fb()
*/ struct drm_framebuffer *fb;
/** * @out_fence: * * Fence which will signal once the writeback has completed
*/ struct dma_fence *out_fence;
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