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Commit 9a8f0a12 authored by Tvrtko Ursulin's avatar Tvrtko Ursulin Committed by Daniel Vetter
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drm/i915/skl: Allow Y (and Yf) frame buffer creation 



By this patch all underlying bits have been implemented and this
patch actually enables the feature.

v2: Validate passed in fb modifiers to reject garbage. (Daniel Vetter)
v3: Rearrange validation checks per code review comments. (Daniel Vetter)

Signed-off-by: default avatarTvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Damien Lespiau <damien.lespiau@intel.com> (v1)
Signed-off-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
parent 0fda6568

drivers/gpu/drm/i915/intel_display.c

+15 −2
Original line number Diff line number Diff line
@@ -12808,8 +12808,21 @@ static int intel_framebuffer_init(struct drm_device *dev, 
		}

	}



	if (mode_cmd->modifier[0] == I915_FORMAT_MOD_Y_TILED) {

		DRM_DEBUG("hardware does not support tiling Y\n");

	/* Passed in modifier sanity checking. */

	switch (mode_cmd->modifier[0]) {

	case I915_FORMAT_MOD_Y_TILED:

	case I915_FORMAT_MOD_Yf_TILED:

		if (INTEL_INFO(dev)->gen < 9) {

			DRM_DEBUG("Unsupported tiling 0x%llx!\n",

				  mode_cmd->modifier[0]);

			return -EINVAL;

		}

	case DRM_FORMAT_MOD_NONE:

	case I915_FORMAT_MOD_X_TILED:

		break;

	default:

		DRM_ERROR("Unsupported fb modifier 0x%llx!\n",

				mode_cmd->modifier[0]);

		return -EINVAL;

	}