0993b0f279
[ Upstream commit ab14c99c035da7156a3b66fa171171295bc4b89a ]
The mdp_ipi_comm structure defines a command that is either
PROCESS (start processing) or DEINIT (destroy instance); we
are using this one to send PROCESS or DEINIT commands from Linux
to an MDP instance through a VPU write but, while the first wants
us to stay 4-bytes aligned, the VPU instead requires an 8-bytes
data alignment.
Keeping in mind that these commands are executed immediately
after sending them (hence not chained with others before the
VPU/MDP "actually" start executing), it is fine to simply add
a padding of 4 bytes to this structure: this keeps the same
performance as before, as we're still stack-allocating it,
while avoiding hackery inside of mtk-vpu to ensure alignment
bringing a definitely bigger performance impact.
Fixes:
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.. | ||
Makefile | ||
mtk_mdp_comp.c | ||
mtk_mdp_comp.h | ||
mtk_mdp_core.c | ||
mtk_mdp_core.h | ||
mtk_mdp_ipi.h | ||
mtk_mdp_m2m.c | ||
mtk_mdp_m2m.h | ||
mtk_mdp_regs.c | ||
mtk_mdp_regs.h | ||
mtk_mdp_vpu.c | ||
mtk_mdp_vpu.h |