drm/i915/display: remove unnecessary PHY_NONE definition

PHY_NONE is not really used, but we define it and, thus, need to check
for it in a few places we use phy.  The only potential places where
phy may become PHY_NONE, is in intel_port_to_phy(), where it derives
from port, which can be PORT_NONE.  Many of its callers don't check
for PHY_NONE, which can cause unknown behavior.  Additionally, this
can only happen if the encoder used has PORT_NONE, which should not be
the case either, without unexpected consequences.

Remove the PHY_NONE definition entirely and add a couple of WARNs at
the relevant places, just to be sure.

Reviewed-by: Michał Grzelak <michal.grzelak@intel.com>
Link: https://patch.msgid.link/20260609095525.570614-5-luciano.coelho@intel.com
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>

0 files changed, 0 insertions, 0 deletions