On Tue, 12 Nov 2019, Lucas De Marchi <lucas.demarchi@xxxxxxxxx> wrote:
> Tiger Lake supports HDMI on port A. For other platforms we ignore what the VBT
> says regarding HDMI to workaround broken VBTs, see commit
> 2ba7d7e04371 ("drm/i915/bios: ignore HDMI on port A"). Make this apply
> gen12+ so they inherit the TGL behavior.
>
> Signed-off-by: Lucas De Marchi <lucas.demarchi@xxxxxxxxx>
Do *NOT* merge patches without full IGT results. BAT is *NOT* enough,
and this did not even pass BAT.
BR,
Jani.
> ---
> drivers/gpu/drm/i915/display/intel_bios.c | 2 +-
> drivers/gpu/drm/i915/display/intel_hdmi.c | 2 +-
> 2 files changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/display/intel_bios.c b/drivers/gpu/drm/i915/display/intel_bios.c
> index 7c0ca733bef8..e6da98729e1f 100644
> --- a/drivers/gpu/drm/i915/display/intel_bios.c
> +++ b/drivers/gpu/drm/i915/display/intel_bios.c
> @@ -1450,7 +1450,7 @@ static void parse_ddi_port(struct drm_i915_private *dev_priv,
> is_hdmi = is_dvi && (child->device_type & DEVICE_TYPE_NOT_HDMI_OUTPUT) == 0;
> is_edp = is_dp && (child->device_type & DEVICE_TYPE_INTERNAL_CONNECTOR);
>
> - if (port == PORT_A && is_dvi) {
> + if (port == PORT_A && is_dvi && INTEL_GEN(dev_priv) < 12) {
> DRM_DEBUG_KMS("VBT claims port A supports DVI%s, ignoring\n",
> is_hdmi ? "/HDMI" : "");
> is_dvi = false;
> diff --git a/drivers/gpu/drm/i915/display/intel_hdmi.c b/drivers/gpu/drm/i915/display/intel_hdmi.c
> index ed4a68fb351f..659a03b08849 100644
> --- a/drivers/gpu/drm/i915/display/intel_hdmi.c
> +++ b/drivers/gpu/drm/i915/display/intel_hdmi.c
> @@ -3140,7 +3140,7 @@ void intel_hdmi_init_connector(struct intel_digital_port *intel_dig_port,
> DRM_DEBUG_KMS("Adding HDMI connector on [ENCODER:%d:%s]\n",
> intel_encoder->base.base.id, intel_encoder->base.name);
>
> - if (WARN_ON(port == PORT_A))
> + if (INTEL_GEN(dev_priv) < 12 && WARN_ON(port == PORT_A))
> return;
>
> if (WARN(intel_dig_port->max_lanes < 4,
--
Jani Nikula, Intel Open Source Graphics Center
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