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drm/i915/dp: Write the source OUI for non-eDP sinks as well

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At least the i-tec USB-C Nano 2x Display Docking Station (containing a
Synaptics MST branch device) requires the driver to update the source
OUI DPCD registers to expose its DSC capability. Accordingly update the
OUI for all sink types (besides eDP where this has been done already).

v2: Rebased on latest patch version.

Closes: https://gitlab.freedesktop.org/drm/i915/kernel/-/issues/11776
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20241025160259.3088727-9-imre.deak@intel.com
This commit is contained in:
Imre Deak
2024-10-25 19:02:59 +03:00
parent 855e828c26
commit 1f12d63a14
1 changed files with 2 additions and 3 deletions
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5
drivers/gpu/drm/i915/display/intel_dp.c
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@@ -3410,9 +3410,6 @@ intel_dp_init_source_oui(struct intel_dp *intel_dp)
u8 oui[] = { 0x00, 0xaa, 0x01 };
u8 buf[3] = {};
if (!intel_dp_is_edp(intel_dp))
return;
if (READ_ONCE(intel_dp->oui_valid))
return;
@@ -6136,6 +6133,8 @@ intel_dp_hpd_pulse(struct intel_digital_port *dig_port, bool long_hpd)
if (long_hpd) {
intel_dp->reset_link_params = true;
intel_dp_invalidate_source_oui(intel_dp);
return IRQ_NONE;
}