mirror of
https://github.com/torvalds/linux.git
synced 2024-11-14 16:12:02 +00:00
b82c1f8f78
Use container_of() instead of type casting so that it keeps working even if base is moved inside the drm_writeback_connector struct. Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com> Reviewed-by: Liviu Dudau <liviu.dudau@arm.com> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: https://patchwork.freedesktop.org/patch/msgid/20180703075022.15138-2-boris.brezillon@bootlin.com
137 lines
3.4 KiB
C
137 lines
3.4 KiB
C
/* 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.
|
|
*/
|
|
|
|
#ifndef __DRM_WRITEBACK_H__
|
|
#define __DRM_WRITEBACK_H__
|
|
#include <drm/drm_connector.h>
|
|
#include <drm/drm_encoder.h>
|
|
#include <linux/workqueue.h>
|
|
|
|
struct drm_writeback_connector {
|
|
struct drm_connector base;
|
|
|
|
/**
|
|
* @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.
|
|
*/
|
|
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_lock: Protects job_queue */
|
|
spinlock_t job_lock;
|
|
|
|
/**
|
|
* @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.
|
|
*/
|
|
unsigned int 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.
|
|
*/
|
|
unsigned long fence_seqno;
|
|
/**
|
|
* @timeline_name:
|
|
*
|
|
* The name of the connector's fence timeline.
|
|
*/
|
|
char timeline_name[32];
|
|
};
|
|
|
|
struct drm_writeback_job {
|
|
/**
|
|
* @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_atomic_set_writeback_fb_for_connector()
|
|
*/
|
|
struct drm_framebuffer *fb;
|
|
|
|
/**
|
|
* @out_fence:
|
|
*
|
|
* Fence which will signal once the writeback has completed
|
|
*/
|
|
struct dma_fence *out_fence;
|
|
};
|
|
|
|
static inline struct drm_writeback_connector *
|
|
drm_connector_to_writeback(struct drm_connector *connector)
|
|
{
|
|
return container_of(connector, struct drm_writeback_connector, base);
|
|
}
|
|
|
|
int drm_writeback_connector_init(struct drm_device *dev,
|
|
struct drm_writeback_connector *wb_connector,
|
|
const struct drm_connector_funcs *con_funcs,
|
|
const struct drm_encoder_helper_funcs *enc_helper_funcs,
|
|
const u32 *formats, int n_formats);
|
|
|
|
void drm_writeback_queue_job(struct drm_writeback_connector *wb_connector,
|
|
struct drm_writeback_job *job);
|
|
|
|
void drm_writeback_cleanup_job(struct drm_writeback_job *job);
|
|
|
|
void
|
|
drm_writeback_signal_completion(struct drm_writeback_connector *wb_connector,
|
|
int status);
|
|
|
|
struct dma_fence *
|
|
drm_writeback_get_out_fence(struct drm_writeback_connector *wb_connector);
|
|
#endif
|