The DSS hardware uses the same ROW_INC value for both Y and UV planes for NV12 format. This means that the pitches of the Y and UV planes have to match. omapdrm doesn't check this at the moment, and this can lead into a broken NV12 fb on the screen.
This patch adds the check.
Signed-off-by: Tomi Valkeinen tomi.valkeinen@ti.com Reviewed-by: Laurent Pinchart laurent.pinchart@ideasonboard.com --- drivers/gpu/drm/omapdrm/omap_fb.c | 8 ++++++++ 1 file changed, 8 insertions(+)
diff --git a/drivers/gpu/drm/omapdrm/omap_fb.c b/drivers/gpu/drm/omapdrm/omap_fb.c index ad202dfc1a49..481512db2656 100644 --- a/drivers/gpu/drm/omapdrm/omap_fb.c +++ b/drivers/gpu/drm/omapdrm/omap_fb.c @@ -449,6 +449,14 @@ struct drm_framebuffer *omap_framebuffer_init(struct drm_device *dev, goto fail; }
+ if (i > 0 && pitch != mode_cmd->pitches[i - 1]) { + dev_err(dev->dev, + "pitches are not the same between framebuffer planes %d != %d\n", + pitch, mode_cmd->pitches[i - 1]); + ret = -EINVAL; + goto fail; + } + plane->bo = bos[i]; plane->offset = mode_cmd->offsets[i]; plane->pitch = pitch;