From: Ville Syrjälä <[email protected]> We don't parse the VBT vswing/preemphassis tables at all currently. Let's WARN if a port wants to use them so we get a heads up that whether we really need to implement this stuff or not. My current stash contains no VBTs with this bit set.
Signed-off-by: Ville Syrjälä <[email protected]> --- drivers/gpu/drm/i915/display/intel_bios.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/gpu/drm/i915/display/intel_bios.c b/drivers/gpu/drm/i915/display/intel_bios.c index 51dde5bfd956..cd86b65055ef 100644 --- a/drivers/gpu/drm/i915/display/intel_bios.c +++ b/drivers/gpu/drm/i915/display/intel_bios.c @@ -2661,6 +2661,10 @@ static void parse_ddi_port(struct intel_bios_encoder_data *devdata) return; } + drm_WARN(&i915->drm, child->use_vbt_vswing, + "Port %c asks to use VBT vswing/preemph tables\n", + port_name(port)); + if (i915->vbt.ports[port]) { drm_dbg_kms(&i915->drm, "More than one child device for port %c in VBT, using the first.\n", -- 2.35.1
