[PATCH v5 6/8] video: Fill video handoff in video post probe

[Devarsh Thakkar <devarsht@ti.com>]

Fill video handoff fields in video_post_probe as at this point we have
full framebuffer-related information.

Also fill all the fields available in video hand-off struct as those
were missing earlier and U-boot framework expects them to be filled for
some of the functionalities.

While filling framebuffer size in video hand-off structure use the
actual framebuffer region size as derived from gd->video_top and
gd->video_bottom instead of directly using the size populated in
video_uc_plat as it contains unaligned size.

Reported-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Devarsh Thakkar <devarsht@ti.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
---
V2:
- No change

V3:
- Fix commit message per review comment
- Add a note explaining assumption of single framebuffer

V4:
- Wrap message to 72 chars

V5:
- Add Reviewed-by and comments for framebuffer size usage
---
 drivers/video/video-uclass.c | 30 ++++++++++++++++++++----------
 1 file changed, 20 insertions(+), 10 deletions(-)

diff --git a/drivers/video/video-uclass.c b/drivers/video/video-uclass.c
index d620a29c25..3571e62ba2 100644
--- a/drivers/video/video-uclass.c
+++ b/drivers/video/video-uclass.c
@@ -144,16 +144,6 @@ int video_reserve(ulong *addrp)
 	debug("Video frame buffers from %lx to %lx\n", gd->video_bottom,
 	      gd->video_top);
 
-	if (spl_phase() == PHASE_SPL && CONFIG_IS_ENABLED(VIDEO_HANDOFF)) {
-		struct video_handoff *ho;
-
-		ho = bloblist_add(BLOBLISTT_U_BOOT_VIDEO, sizeof(*ho), 0);
-		if (!ho)
-			return log_msg_ret("blf", -ENOENT);
-		ho->fb = *addrp;
-		ho->size = size;
-	}
-
 	return 0;
 }
 
@@ -552,6 +542,26 @@ static int video_post_probe(struct udevice *dev)
 
 	priv->fb_size = priv->line_length * priv->ysize;
 
+	/*
+	 * Set up video handoff fields for passing video blob to next stage
+	 * NOTE:
+	 * This assumes that reserved video memory only uses a single framebuffer
+	 */
+	if (spl_phase() == PHASE_SPL && CONFIG_IS_ENABLED(BLOBLIST)) {
+		struct video_handoff *ho;
+
+		ho = bloblist_add(BLOBLISTT_U_BOOT_VIDEO, sizeof(*ho), 0);
+		if (!ho)
+			return log_msg_ret("blf", -ENOENT);
+		ho->fb = gd->video_bottom;
+		/* Fill aligned size here as calculated in video_reserve() */
+		ho->size = gd->video_top - gd->video_bottom;
+		ho->xsize = priv->xsize;
+		ho->ysize = priv->ysize;
+		ho->line_length = priv->line_length;
+		ho->bpix = priv->bpix;
+	}
+
 	if (IS_ENABLED(CONFIG_VIDEO_COPY) && plat->copy_base)
 		priv->copy_fb = map_sysmem(plat->copy_base, plat->size);
 
-- 
2.34.1