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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: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Damien Lespiau <damien.lespiau@intel.com> (v1)
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Tvrtko Ursulin 2015-02-27 11:15:24 +00:00 committed by Daniel Vetter
parent 0fda65680e
commit 9a8f0a1290
1 changed files with 15 additions and 2 deletions
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17
drivers/gpu/drm/i915/intel_display.c
View File

@ -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;
}