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drm/i915/tc: Don't connect the PHY in intel_tc_port_connected() 

Connecting the PHY for connector probing - also blocking TC-cold - isn't
required and has some overhead. Taking only the mutex is sufficient, so
do that.

Reviewed-by: Mika Kahola <mika.kahola@intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230323142035.1432621-25-imre.deak@intel.com
This commit is contained in:
Imre Deak 2023-03-23 16:20:30 +02:00
parent 8979918af7
commit ebcabb8b15
1 changed files with 8 additions and 3 deletions
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11
drivers/gpu/drm/i915/display/intel_tc.c
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@ -1235,20 +1235,25 @@ bool intel_tc_port_connected_locked(struct intel_encoder *encoder)
struct intel_digital_port *dig_port = enc_to_dig_port(encoder);
struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
struct intel_tc_port *tc = to_tc_port(dig_port);
u32 mask = ~0;
drm_WARN_ON(&i915->drm, !intel_tc_port_ref_held(dig_port));
return tc_phy_hpd_live_status(tc) & BIT(tc->mode);
if (tc->mode != TC_PORT_DISCONNECTED)
mask = BIT(tc->mode);
return tc_phy_hpd_live_status(tc) & mask;
}
bool intel_tc_port_connected(struct intel_encoder *encoder)
{
struct intel_digital_port *dig_port = enc_to_dig_port(encoder);
struct intel_tc_port *tc = to_tc_port(dig_port);
bool is_connected;
intel_tc_port_lock(dig_port);
mutex_lock(&tc->lock);
is_connected = intel_tc_port_connected_locked(encoder);
intel_tc_port_unlock(dig_port);
mutex_unlock(&tc->lock);
return is_connected;
}