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[U-Boot,04/37] video: Add a function to control cache flushing

Message ID 1452787100-21782-5-git-send-email-sjg@chromium.org
State Accepted
Commit 68dcdc99c51c0f0e4678b3b2b66249f3c6715d34
Delegated to: Simon Glass
Headers show

Commit Message

Simon Glass Jan. 14, 2016, 3:57 p.m. UTC 
Allow the cache-flushing function of a video device to be controlled.

Signed-off-by: Simon Glass <sjg@chromium.org>
---

 drivers/video/video-uclass.c | 7 +++++++
 include/video.h              | 8 ++++++++
 2 files changed, 15 insertions(+)
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Patch

diff --git a/drivers/video/video-uclass.c b/drivers/video/video-uclass.c
index 63d0d9d..24d537e 100644
--- a/drivers/video/video-uclass.c
+++ b/drivers/video/video-uclass.c
@@ -42,6 +42,13 @@ 
  */
 DECLARE_GLOBAL_DATA_PTR;
 
+void video_set_flush_dcache(struct udevice *dev, bool flush)
+{
+	struct video_priv *priv = dev_get_uclass_priv(dev);
+
+	priv->flush_dcache = flush;
+}
+
 static ulong alloc_fb(struct udevice *dev, ulong *addrp)
 {
 	struct video_uc_platdata *plat = dev_get_uclass_platdata(dev);
diff --git a/include/video.h b/include/video.h
index 5fd426e..5b147ba 100644
--- a/include/video.h
+++ b/include/video.h
@@ -159,6 +159,14 @@  int video_get_xsize(struct udevice *dev);
  */
 int video_get_ysize(struct udevice *dev);
 
+/**
+ * Set whether we need to flush the dcache when changing the image. This
+ * defaults to off.
+ *
+ * @param flush		non-zero to flush cache after update, 0 to skip
+ */
+void video_set_flush_dcache(struct udevice *dev, bool flush);
+
 #endif /* CONFIG_DM_VIDEO */
 
 #ifndef CONFIG_DM_VIDEO