con_putc
if (vc->vc_sw->con_putc)
vc->vc_sw->con_putc(vc, ca, y, x);
con_putc(vc, old, oldy, oldx);
con_putc(vc, new, oldy, oldx);
con_putc(vc, i, vc->state.y, vc->state.x);
con_putc(vc, softcursor_original, vc->state.y,
.con_putc = dummycon_putc,
.con_putc = newport_putc,
void (*con_putc)(struct vc_data *vc, u16 ca, unsigned int y,