@@ -46,6 +46,19 @@
*/
DECLARE_GLOBAL_DATA_PTR;
+/**
+ * struct video_uc_priv - Information for the video uclass
+ *
+ * @video_ptr: Current allocation position of the video framebuffer pointer.
+ * While binding devices after relocation, this points to the next
+ * available address to use for a device's framebuffer. It starts at
+ * gd->video_top and works downwards, running out of space when it hits
+ * gd->video_bottom.
+ */
+struct video_uc_priv {
+ ulong video_ptr;
+};
+
void video_set_flush_dcache(struct udevice *dev, bool flush)
{
struct video_priv *priv = dev_get_uclass_priv(dev);
@@ -350,12 +363,21 @@ static int video_post_probe(struct udevice *dev)
/* Post-relocation, allocate memory for the frame buffer */
static int video_post_bind(struct udevice *dev)
{
- ulong addr = gd->video_top;
+ struct video_uc_priv *uc_priv;
+ ulong addr;
ulong size;
/* Before relocation there is nothing to do here */
if (!(gd->flags & GD_FLG_RELOC))
return 0;
+
+ /* Set up the video pointer, if this is the first device */
+ uc_priv = dev->uclass->priv;
+ if (!uc_priv->video_ptr)
+ uc_priv->video_ptr = gd->video_top;
+
+ /* Allocate framebuffer space for this device */
+ addr = uc_priv->video_ptr;
size = alloc_fb(dev, &addr);
if (addr < gd->video_bottom) {
/* Device tree node may need the 'u-boot,dm-pre-reloc' or
@@ -367,7 +389,7 @@ static int video_post_bind(struct udevice *dev)
}
debug("%s: Claiming %lx bytes at %lx for video device '%s'\n",
__func__, size, addr, dev->name);
- gd->video_bottom = addr;
+ uc_priv->video_ptr = addr;
return 0;
}
@@ -380,6 +402,7 @@ UCLASS_DRIVER(video) = {
.pre_probe = video_pre_probe,
.post_probe = video_post_probe,
.pre_remove = video_pre_remove,
+ .priv_auto_alloc_size = sizeof(struct video_uc_priv),
.per_device_auto_alloc_size = sizeof(struct video_priv),
.per_device_platdata_auto_alloc_size = sizeof(struct video_uc_platdata),
};