On 02/09/2015 06:03 PM, Daniel Vetter wrote:
Currently we don't support anything but X tiled. And for an easier
transition it makes a lot of sense to just keep requiring that X tiled
is properly fenced.
Which means we need to do absolutely nothing in old code to support fb
modifiers, yay!
Cc: Tvrtko Ursulin <[email protected]>
Signed-off-by: Daniel Vetter <[email protected]>
---
drivers/gpu/drm/i915/intel_display.c | 24 +++++++++++++++++++-----
1 file changed, 19 insertions(+), 5 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_display.c
b/drivers/gpu/drm/i915/intel_display.c
index 3fe95982be93..2d69cce03ab5 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -12707,7 +12707,20 @@ static int intel_framebuffer_init(struct drm_device
*dev,
WARN_ON(!mutex_is_locked(&dev->struct_mutex));
- if (obj->tiling_mode == I915_TILING_Y) {
+ if (mode_cmd->flags & DRM_MODE_FB_MODIFIERS) {
+ /* Enforce that fb modifier and tiling mode match, but only for
+ * X-tiled. */
+ if (!!(obj->tiling_mode == I915_TILING_X) !=
+ !!(mode_cmd->modifier[0] == I915_FORMAT_MOD_X_TILED)) {
+ DRM_DEBUG("tiling_mode doesn't match fb modifier\n");
+ return -EINVAL;
+ }
+ } else {
+ if (obj->tiling_mode == I915_TILING_X)
+ mode_cmd->modifier[0] = I915_FORMAT_MOD_X_TILED;
+ }
+
+ if (mode_cmd->modifier[0] == I915_FORMAT_MOD_X_TILED) {
DRM_DEBUG("hardware does not support tiling Y\n");
return -EINVAL;
== I915_FORMAT_MOD_Y_TILED, although it can't really happen with these
changes. But don't we still need the check against obj->tiling_mode for Y?
Regards,
Tvrtko
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