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video: Add a function to control cache flushing 

Allow the cache-flushing function of a video device to be controlled.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass 2016-01-21 19:44:52 -07:00
parent f1a1247d89
commit 68dcdc99c5
2 changed files with 15 additions and 0 deletions
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7
drivers/video/video-uclass.c
View File

@ -42,6 +42,13 @@
*/ */
DECLARE_GLOBAL_DATA_PTR; 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) static ulong alloc_fb(struct udevice *dev, ulong *addrp)
{ {
struct video_uc_platdata *plat = dev_get_uclass_platdata(dev); struct video_uc_platdata *plat = dev_get_uclass_platdata(dev);

8
include/video.h
View File

@ -158,6 +158,14 @@ int video_get_xsize(struct udevice *dev);
*/ */
int video_get_ysize(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 */ #endif /* CONFIG_DM_VIDEO */
#ifndef CONFIG_DM_VIDEO #ifndef CONFIG_DM_VIDEO