On Mon, May 04, 2020 at 03:52:17PM -0700, Matt Roper wrote:
> When Rocket Lake is paired with a TGP PCH, the last two outputs utilize
> the TC1 and TC2 hpd pins, even though these are combo outputs.
>
> Bspec: 49181
> Cc: Lucas De Marchi <lucas.demar...@intel.com>
> Signed-off-by: Matt Roper <matthew.d.ro...@intel.com>
> ---
> drivers/gpu/drm/i915/display/intel_dp.c | 8 ++++++--
> 1 file changed, 6 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/display/intel_dp.c
> b/drivers/gpu/drm/i915/display/intel_dp.c
> index 6952b0295096..d32bbcd99b8a 100644
> --- a/drivers/gpu/drm/i915/display/intel_dp.c
> +++ b/drivers/gpu/drm/i915/display/intel_dp.c
> @@ -6172,8 +6172,12 @@ static bool bxt_digital_port_connected(struct
> intel_encoder *encoder)
> static bool intel_combo_phy_connected(struct drm_i915_private *dev_priv,
> enum phy phy)
> {
> - if (HAS_PCH_MCC(dev_priv) && phy == PHY_C)
> - return intel_de_read(dev_priv, SDEISR) &
> SDE_TC_HOTPLUG_ICP(PORT_TC1);
> + if (IS_ROCKETLAKE(dev_priv) && phy >= PHY_C)
> + return intel_de_read(dev_priv, SDEISR) &
> + SDE_TC_HOTPLUG_ICP(phy - PHY_C);
> + else if (HAS_PCH_MCC(dev_priv) && phy == PHY_C)
> + return intel_de_read(dev_priv, SDEISR) &
> + SDE_TC_HOTPLUG_ICP(PORT_TC1);
Most of this mess is going to disappear as soon as I can land
https://patchwork.freedesktop.org/series/72348/
So assuming the hpd[] thing gets correctly populated we no longer
need any hack like these.
>
> return intel_de_read(dev_priv, SDEISR) & SDE_DDI_HOTPLUG_ICP(phy);
> }
> --
> 2.24.1
>
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--
Ville Syrjälä
Intel
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