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drm/i915/adlp: Assert that VMAs in DPT start at 0

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Atm the DPT object can accommodate only one VMA, so the VMA offset will
be always 0. Add an assert for this.

Cc: Juha-Pekka Heikkila <juhapekka.heikkila@gmail.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Juha-Pekka Heikkila <juhapekka.heikkila@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210906182715.3915100-4-imre.deak@intel.com
This commit is contained in:
Imre Deak 2021-09-06 21:27:12 +03:00
parent 9814948e3c
commit 92dff6c79b
1 changed files with 5 additions and 0 deletions
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5
drivers/gpu/drm/i915/display/skl_universal_plane.c
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@ -993,6 +993,11 @@ static u32 skl_surf_address(const struct intel_plane_state *plane_state,
u32 offset = plane_state->view.color_plane[color_plane].offset;
if (intel_fb_uses_dpt(fb)) {
/*
* The DPT object contains only one vma, so the VMA's offset
* within the DPT is always 0.
*/
WARN_ON(plane_state->dpt_vma->node.start);
WARN_ON(offset & 0x1fffff);
return offset >> 9;
} else {