  We use a ${\mathcal B}$-adic completion and the $p$-adic local Langlands
correspondence for ${\mathrm {GL}}_2({\mathbf Q}_p )$ to give a construction of
Kisin's rings and the attached universal Galois representations (in dimension 2
and for ${\mathbf Q}_p$) directly from the classical Langlands correspondence.
This gives, in particular, a uniform proof of the geometric Breuil-M\'ezard
conjecture in the supercuspidal case.
