drm/msm: add support for "stolen" mem
Add support to use the VRAM carveout (if specified in dtb) for fbdev
scanout buffer. This allows drm/msm to take over a bootloader splash-
screen, and avoids corruption on screen that results if the kernel uses
memory that is still being scanned out for itself.
Signed-off-by: Rob Clark <robdclark@gmail.com>
diff --git a/drivers/gpu/drm/msm/msm_fbdev.c b/drivers/gpu/drm/msm/msm_fbdev.c
index df60f65..95f6532 100644
--- a/drivers/gpu/drm/msm/msm_fbdev.c
+++ b/drivers/gpu/drm/msm/msm_fbdev.c
@@ -110,7 +110,8 @@
size = mode_cmd.pitches[0] * mode_cmd.height;
DBG("allocating %d bytes for fb %d", size, dev->primary->index);
mutex_lock(&dev->struct_mutex);
- fbdev->bo = msm_gem_new(dev, size, MSM_BO_SCANOUT | MSM_BO_WC);
+ fbdev->bo = msm_gem_new(dev, size, MSM_BO_SCANOUT |
+ MSM_BO_WC | MSM_BO_STOLEN);
mutex_unlock(&dev->struct_mutex);
if (IS_ERR(fbdev->bo)) {
ret = PTR_ERR(fbdev->bo);