On my droid4 I noticed bad constant tearing on the LCD with stellarium in
landscape mode with xorg-video-omap rotated with xrandr --rotate right.
Every second or so update gets squeezed down in size to only the top half
of the LCD panel.
This issue does not happen with xrandr --rotate normal, or when HDMI
display is also connected. Looks like xorg-video-omap switches to tiled
mode in the the rotated case.
Looking around what might affect BO_TILED, I noticed Matthijs had this
change in his earlier pyra tiler patches. The earlier patch "XXX omapdrm:
force tiled buffers to be pinned and page-aligned" has no commit log
though, so I'm not sure what other issues this might fix.
This is with the old pvr-omap4 driver, but presumably the same issue
exists in all cases.
Cc: H. Nikolaus Schaller <hns@xxxxxxxxxxxxx>
Cc: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>
Cc: Matthijs van Duin <matthijsvanduin@xxxxxxxxx>
Cc: Merlijn Wajer <merlijn@xxxxxxxxxx>
Cc: Sebastian Reichel <sre@xxxxxxxxxx>
Cc: Tomi Valkeinen <tomi.valkeinen@xxxxxx>
Signed-off-by: Tony Lindgren <tony@xxxxxxxxxxx>
---
Matthijs, do you have some more info to add to the description?
drivers/gpu/drm/omapdrm/omap_gem.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/omapdrm/omap_gem.c b/drivers/gpu/drm/omapdrm/omap_gem.c
--- a/drivers/gpu/drm/omapdrm/omap_gem.c
+++ b/drivers/gpu/drm/omapdrm/omap_gem.c
@@ -789,7 +789,7 @@ int omap_gem_pin(struct drm_gem_object *obj, dma_addr_t *dma_addr)
if (omap_obj->flags & OMAP_BO_TILED_MASK) {
block = tiler_reserve_2d(fmt,
omap_obj->width,
- omap_obj->height, 0);
+ omap_obj->height, PAGE_SIZE);
} else {
block = tiler_reserve_1d(obj->size);
}
--
2.24.1
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