[Intel-gfx] [PATCH] drm/i915: Allow legacy interface for legacy Y tiled display

[Tvrtko Ursulin]

From: Tvrtko Ursulin <tvrtko.ursulin at intel.com>

Makes it easier for userspace to start supporting Y tiled display,
for at least the legacy format.

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin at intel.com>
Cc: Chris Wilson <chris at chris-wilson.co.uk>
Cc: Daniel Vetter <daniel.vetter at ffwll.ch>
---
 drivers/gpu/drm/i915/intel_display.c | 15 ++++++++++++---
 1 file changed, 12 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 1813190..de50631 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -13347,10 +13347,19 @@ static int intel_framebuffer_init(struct drm_device *dev,
 			return -EINVAL;
 		}
 	} else {
-		if (obj->tiling_mode == I915_TILING_X)
+		switch (obj->tiling_mode) {
+		case I915_TILING_NONE:
+			mode_cmd->modifier[0] = DRM_FORMAT_MOD_NONE;
+			break;
+		case I915_TILING_X:
 			mode_cmd->modifier[0] = I915_FORMAT_MOD_X_TILED;
-		else if (obj->tiling_mode == I915_TILING_Y) {
-			DRM_DEBUG("No Y tiling for legacy addfb\n");
+			break;
+		case I915_TILING_Y:
+			mode_cmd->modifier[0] = I915_FORMAT_MOD_Y_TILED;
+			break;
+		default:
+			DRM_DEBUG("Unsupported fb obj tiling %u!\n",
+				  obj->tiling_mode);
 			return -EINVAL;
 		}
 	}
-- 
2.3.2