[PATCH 16/17] drm/i915/ddi: Move platform/encoder checks within adlp_tbt_to_dp_alt_switch_wa()

[Imre Deak <imre.deak@intel.com>]

From: Imre Deak <imre.deak@gmail.com>

The prefix of adlp_tbt_to_dp_alt_switch_wa() function name shows already
what is the relevant platform and encoder type/mode, so the
corresponding checks are a detail that can be hidden in the
function, do so.

Signed-off-by: Imre Deak <imre.deak@gmail.com>
---
 drivers/gpu/drm/i915/display/intel_ddi.c | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c b/drivers/gpu/drm/i915/display/intel_ddi.c
index 431db1e6b6f07..a2d82a4c4aa77 100644
--- a/drivers/gpu/drm/i915/display/intel_ddi.c
+++ b/drivers/gpu/drm/i915/display/intel_ddi.c
@@ -3699,10 +3699,16 @@ intel_ddi_pre_pll_enable(struct intel_atomic_state *state,
 
 static void adlp_tbt_to_dp_alt_switch_wa(struct intel_encoder *encoder)
 {
+	struct intel_display *display = to_intel_display(encoder);
 	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
+	struct intel_digital_port *dig_port = enc_to_dig_port(encoder);
 	enum tc_port tc_port = intel_encoder_to_tc(encoder);
 	int ln;
 
+	if (!display->platform.alderlake_p ||
+	    (!intel_tc_port_in_dp_alt_mode(dig_port) && !intel_tc_port_in_legacy_mode(dig_port)))
+		return;
+
 	for (ln = 0; ln < 2; ln++)
 		intel_dkl_phy_rmw(i915, DKL_PCS_DW5(tc_port, ln), DKL_PCS_DW5_CORE_SOFTRESET, 0);
 }
@@ -3777,9 +3783,7 @@ static void intel_ddi_prepare_link_retrain(struct intel_dp *intel_dp,
 	intel_de_write(dev_priv, dp_tp_ctl_reg(encoder, crtc_state), dp_tp_ctl);
 	intel_de_posting_read(dev_priv, dp_tp_ctl_reg(encoder, crtc_state));
 
-	if (IS_ALDERLAKE_P(dev_priv) &&
-	    (intel_tc_port_in_dp_alt_mode(dig_port) || intel_tc_port_in_legacy_mode(dig_port)))
-		adlp_tbt_to_dp_alt_switch_wa(encoder);
+	adlp_tbt_to_dp_alt_switch_wa(encoder);
 
 	intel_enable_ddi_buf(encoder, intel_dp->DP);
 	intel_dp->DP |= DDI_BUF_CTL_ENABLE;
-- 
2.44.2