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Name	Size	Permission	Date
bridge	[ DIR ]	drwxr-xr-x	2026-06-04 06:36
display	[ DIR ]	drwxr-xr-x	2026-06-04 06:36
i2c	[ DIR ]	drwxr-xr-x	2026-06-04 06:36
ttm	[ DIR ]	drwxr-xr-x	2026-06-04 06:36
amd_asic_type.h	2.33 KB	-rw-r--r--	2024-03-10 20:38
drm_accel.h	2.25 KB	-rw-r--r--	2026-05-26 09:55
drm_aperture.h	1.06 KB	-rw-r--r--	2024-03-10 20:38
drm_atomic.h	42.54 KB	-rw-r--r--	2026-05-26 09:55
drm_atomic_helper.h	10.78 KB	-rw-r--r--	2024-03-10 20:38
drm_atomic_state_helper.h	4.42 KB	-rw-r--r--	2024-03-10 20:38
drm_atomic_uapi.h	2.06 KB	-rw-r--r--	2024-03-10 20:38
drm_audio_component.h	3.84 KB	-rw-r--r--	2024-03-10 20:38
drm_auth.h	4.18 KB	-rw-r--r--	2024-03-10 20:38
drm_blend.h	2.35 KB	-rw-r--r--	2024-03-10 20:38
drm_bridge.h	34.88 KB	-rw-r--r--	2026-05-26 09:55
drm_bridge_connector.h	405 B	-rw-r--r--	2024-03-10 20:38
drm_buddy.h	4.17 KB	-rw-r--r--	2024-03-10 20:38
drm_cache.h	3.3 KB	-rw-r--r--	2024-03-10 20:38
drm_client.h	5.04 KB	-rw-r--r--	2024-03-10 20:38
drm_color_mgmt.h	3.91 KB	-rw-r--r--	2024-03-10 20:38
drm_connector.h	65.08 KB	-rw-r--r--	2026-05-26 09:55
drm_crtc.h	44.52 KB	-rw-r--r--	2024-03-10 20:38
drm_crtc_helper.h	2.51 KB	-rw-r--r--	2024-03-10 20:38
drm_damage_helper.h	3.33 KB	-rw-r--r--	2024-03-10 20:38
drm_debugfs.h	5.68 KB	-rw-r--r--	2024-03-10 20:38
drm_debugfs_crc.h	2.66 KB	-rw-r--r--	2024-03-10 20:38
drm_device.h	7.64 KB	-rw-r--r--	2026-05-26 09:55
drm_displayid.h	4.99 KB	-rw-r--r--	2026-05-26 09:55
drm_drv.h	17.81 KB	-rw-r--r--	2024-03-10 20:38
drm_edid.h	15.68 KB	-rw-r--r--	2026-05-26 09:55
drm_eld.h	4.76 KB	-rw-r--r--	2024-03-10 20:38
drm_encoder.h	11.07 KB	-rw-r--r--	2024-03-10 20:38
drm_encoder_slave.h	6.46 KB	-rw-r--r--	2024-03-10 20:38
drm_exec.h	4.29 KB	-rw-r--r--	2024-03-10 20:38
drm_fb_dma_helper.h	575 B	-rw-r--r--	2024-03-10 20:38
drm_fb_helper.h	11.75 KB	-rw-r--r--	2024-03-10 20:38
drm_fbdev_dma.h	656 B	-rw-r--r--	2026-05-26 09:55
drm_fbdev_generic.h	349 B	-rw-r--r--	2024-03-10 20:38
drm_file.h	14.24 KB	-rw-r--r--	2026-05-26 09:55
drm_fixed.h	4.83 KB	-rw-r--r--	2026-05-26 09:55
drm_flip_work.h	2.63 KB	-rw-r--r--	2024-03-10 20:38
drm_format_helper.h	5.33 KB	-rw-r--r--	2024-03-10 20:38
drm_fourcc.h	9.91 KB	-rw-r--r--	2024-03-10 20:38
drm_framebuffer.h	10.04 KB	-rw-r--r--	2026-05-26 09:55
drm_gem.h	18.6 KB	-rw-r--r--	2026-05-26 09:55
drm_gem_atomic_helper.h	5.52 KB	-rw-r--r--	2024-03-10 20:38
drm_gem_dma_helper.h	9.26 KB	-rw-r--r--	2024-03-10 20:38
drm_gem_framebuffer_helper.h	1.93 KB	-rw-r--r--	2024-03-10 20:38
drm_gem_shmem_helper.h	7.93 KB	-rw-r--r--	2024-03-10 20:38
drm_gem_ttm_helper.h	822 B	-rw-r--r--	2024-03-10 20:38
drm_gem_vram_helper.h	6.08 KB	-rw-r--r--	2024-03-10 20:38
drm_gpuvm.h	33.54 KB	-rw-r--r--	2024-03-10 20:38
drm_ioctl.h	5.82 KB	-rw-r--r--	2024-03-10 20:38
drm_kunit_helpers.h	4.21 KB	-rw-r--r--	2026-05-26 09:55
drm_lease.h	1010 B	-rw-r--r--	2024-03-10 20:38
drm_managed.h	3.9 KB	-rw-r--r--	2024-03-10 20:38
drm_mipi_dbi.h	6.87 KB	-rw-r--r--	2024-03-10 20:38
drm_mipi_dsi.h	13.22 KB	-rw-r--r--	2026-05-26 09:55
drm_mm.h	17.53 KB	-rw-r--r--	2024-03-10 20:38
drm_mode_config.h	32.81 KB	-rw-r--r--	2024-03-10 20:38
drm_mode_object.h	5.46 KB	-rw-r--r--	2024-03-10 20:38
drm_modes.h	19.9 KB	-rw-r--r--	2024-03-10 20:38
drm_modeset_helper.h	1.77 KB	-rw-r--r--	2024-03-10 20:38
drm_modeset_helper_vtables.h	59.37 KB	-rw-r--r--	2026-05-26 09:55
drm_modeset_lock.h	7.07 KB	-rw-r--r--	2024-03-10 20:38
drm_module.h	3.72 KB	-rw-r--r--	2024-03-10 20:38
drm_of.h	5.22 KB	-rw-r--r--	2024-03-10 20:38
drm_panel.h	8.89 KB	-rw-r--r--	2024-03-10 20:38
drm_pciids.h	61.04 KB	-rw-r--r--	2024-03-10 20:38
drm_plane.h	30.92 KB	-rw-r--r--	2024-03-10 20:38
drm_plane_helper.h	2.22 KB	-rw-r--r--	2024-03-10 20:38
drm_prime.h	4.06 KB	-rw-r--r--	2024-03-10 20:38
drm_print.h	20.39 KB	-rw-r--r--	2026-05-26 09:55
drm_privacy_screen_consumer.h	1.94 KB	-rw-r--r--	2024-03-10 20:38
drm_privacy_screen_driver.h	2.99 KB	-rw-r--r--	2024-03-10 20:38
drm_privacy_screen_machine.h	1.25 KB	-rw-r--r--	2024-03-10 20:38
drm_probe_helper.h	1.57 KB	-rw-r--r--	2024-03-10 20:38
drm_property.h	11.99 KB	-rw-r--r--	2024-03-10 20:38
drm_rect.h	7.17 KB	-rw-r--r--	2024-03-10 20:38
drm_self_refresh_helper.h	594 B	-rw-r--r--	2024-03-10 20:38
drm_simple_kms_helper.h	9.52 KB	-rw-r--r--	2024-03-10 20:38
drm_suballoc.h	2.75 KB	-rw-r--r--	2024-03-10 20:38
drm_syncobj.h	3.95 KB	-rw-r--r--	2024-03-10 20:38
drm_sysfs.h	512 B	-rw-r--r--	2024-03-10 20:38
drm_util.h	2.58 KB	-rw-r--r--	2024-03-10 20:38
drm_utils.h	592 B	-rw-r--r--	2026-05-26 09:55
drm_vblank.h	10.18 KB	-rw-r--r--	2026-05-26 09:55
drm_vblank_work.h	1.91 KB	-rw-r--r--	2024-03-10 20:38
drm_vma_manager.h	8.23 KB	-rw-r--r--	2024-03-10 20:38
drm_writeback.h	4.45 KB	-rw-r--r--	2024-03-10 20:38
gma_drm.h	413 B	-rw-r--r--	2024-03-10 20:38
gpu_scheduler.h	20.85 KB	-rw-r--r--	2026-05-26 09:55
gud.h	11.65 KB	-rw-r--r--	2024-03-10 20:38
i915_component.h	1.81 KB	-rw-r--r--	2024-03-10 20:38
i915_drm.h	3.57 KB	-rw-r--r--	2024-03-10 20:38
i915_gsc_proxy_mei_interface.h	1.52 KB	-rw-r--r--	2024-03-10 20:38
i915_hdcp_interface.h	16.22 KB	-rw-r--r--	2024-03-10 20:38
i915_pciids.h	23.94 KB	-rw-r--r--	2026-05-26 09:55
i915_pxp_tee_interface.h	1.28 KB	-rw-r--r--	2024-03-10 20:38
intel-gtt.h	1015 B	-rw-r--r--	2024-03-10 20:38
intel_lpe_audio.h	1.72 KB	-rw-r--r--	2024-03-10 20:38
spsc_queue.h	3.08 KB	-rw-r--r--	2026-05-26 09:55
task_barrier.h	2.95 KB	-rw-r--r--	2024-03-10 20:38
xe_pciids.h	5.37 KB	-rw-r--r--	2024-03-10 20:38

Rename

/* 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 - DRM writeback connector
 */
struct drm_writeback_connector {
	/**
	 * @base: base drm_connector object
	 */
	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.
	 * 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_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 - 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;

/**
	 * @priv:
	 *
	 * Driver-private data
	 */
	void *priv;
};

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,
				 u32 possible_crtcs);

int drm_writeback_connector_init_with_encoder(struct drm_device *dev,
				struct drm_writeback_connector *wb_connector,
				struct drm_encoder *enc,
				const struct drm_connector_funcs *con_funcs, const u32 *formats,
				int n_formats);

int drm_writeback_set_fb(struct drm_connector_state *conn_state,
			 struct drm_framebuffer *fb);

int drm_writeback_prepare_job(struct drm_writeback_job *job);

void drm_writeback_queue_job(struct drm_writeback_connector *wb_connector,
			     struct drm_connector_state *conn_state);

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