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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 10:05:51 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 10:05:51 +0000
commit5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 (patch)
treea94efe259b9009378be6d90eb30d2b019d95c194 /include/drm/drm_flip_work.h
parentInitial commit. (diff)
downloadlinux-5d1646d90e1f2cceb9f0828f4b28318cd0ec7744.tar.xz
linux-5d1646d90e1f2cceb9f0828f4b28318cd0ec7744.zip
Adding upstream version 5.10.209.upstream/5.10.209upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'include/drm/drm_flip_work.h')
-rw-r--r--include/drm/drm_flip_work.h92
1 files changed, 92 insertions, 0 deletions
diff --git a/include/drm/drm_flip_work.h b/include/drm/drm_flip_work.h
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+++ b/include/drm/drm_flip_work.h
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+/*
+ * Copyright (C) 2013 Red Hat
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#ifndef DRM_FLIP_WORK_H
+#define DRM_FLIP_WORK_H
+
+#include <linux/kfifo.h>
+#include <linux/spinlock.h>
+#include <linux/workqueue.h>
+
+/**
+ * DOC: flip utils
+ *
+ * Util to queue up work to run from work-queue context after flip/vblank.
+ * Typically this can be used to defer unref of framebuffer's, cursor
+ * bo's, etc until after vblank. The APIs are all thread-safe.
+ * Moreover, drm_flip_work_queue_task and drm_flip_work_queue can be called
+ * in atomic context.
+ */
+
+struct drm_flip_work;
+
+/*
+ * drm_flip_func_t - callback function
+ *
+ * @work: the flip work
+ * @val: value queued via drm_flip_work_queue()
+ *
+ * Callback function to be called for each of the queue'd work items after
+ * drm_flip_work_commit() is called.
+ */
+typedef void (*drm_flip_func_t)(struct drm_flip_work *work, void *val);
+
+/**
+ * struct drm_flip_task - flip work task
+ * @node: list entry element
+ * @data: data to pass to &drm_flip_work.func
+ */
+struct drm_flip_task {
+ struct list_head node;
+ void *data;
+};
+
+/**
+ * struct drm_flip_work - flip work queue
+ * @name: debug name
+ * @func: callback fxn called for each committed item
+ * @worker: worker which calls @func
+ * @queued: queued tasks
+ * @commited: commited tasks
+ * @lock: lock to access queued and commited lists
+ */
+struct drm_flip_work {
+ const char *name;
+ drm_flip_func_t func;
+ struct work_struct worker;
+ struct list_head queued;
+ struct list_head commited;
+ spinlock_t lock;
+};
+
+struct drm_flip_task *drm_flip_work_allocate_task(void *data, gfp_t flags);
+void drm_flip_work_queue_task(struct drm_flip_work *work,
+ struct drm_flip_task *task);
+void drm_flip_work_queue(struct drm_flip_work *work, void *val);
+void drm_flip_work_commit(struct drm_flip_work *work,
+ struct workqueue_struct *wq);
+void drm_flip_work_init(struct drm_flip_work *work,
+ const char *name, drm_flip_func_t func);
+void drm_flip_work_cleanup(struct drm_flip_work *work);
+
+#endif /* DRM_FLIP_WORK_H */