From 748471a5e4afc91e2867caad3da613320fd88bbe Mon Sep 17 00:00:00 2001
From: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Date: Thu, 5 Mar 2015 23:42:39 +0200
Subject: drm: omapdrm: Implement asynchronous commit support

Implement a custom .atomic_commit() handler that supports asynchronous
commits using a work queue. This can be used for userspace-driven
asynchronous commits, as well as for an atomic page flip implementation.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
---
 drivers/gpu/drm/omapdrm/omap_drv.h | 8 ++++++++
 1 file changed, 8 insertions(+)

(limited to 'drivers/gpu/drm/omapdrm/omap_drv.h')

diff --git a/drivers/gpu/drm/omapdrm/omap_drv.h b/drivers/gpu/drm/omapdrm/omap_drv.h
index 6448fa809215..21c3929b06e7 100644
--- a/drivers/gpu/drm/omapdrm/omap_drv.h
+++ b/drivers/gpu/drm/omapdrm/omap_drv.h
@@ -23,6 +23,7 @@
 #include <linux/module.h>
 #include <linux/platform_data/omap_drm.h>
 #include <linux/types.h>
+#include <linux/wait.h>
 #include <video/omapdss.h>
 
 #include <drm/drmP.h>
@@ -105,6 +106,13 @@ struct omap_drm_private {
 	struct list_head irq_list;    /* list of omap_drm_irq */
 	uint32_t vblank_mask;         /* irq bits set for userspace vblank */
 	struct omap_drm_irq error_handler;
+
+	/* atomic commit */
+	struct {
+		wait_queue_head_t wait;
+		u32 pending;
+		spinlock_t lock;	/* Protects commit.pending */
+	} commit;
 };
 
 
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