[PATCH] drm/i915/dp: DP PHY compliance for JSL

[Vidya Srinivas <vidya.srinivas@xxxxxxxxx>]

Signed-off-by: Khaled Almahallawy <khaled.almahallawy@xxxxxxxxx>
Signed-off-by: Vidya Srinivas <vidya.srinivas@xxxxxxxxx>
---
 drivers/gpu/drm/i915/display/intel_dp.c | 40 ++++++++++++++++++++++++++-------
 1 file changed, 32 insertions(+), 8 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c
index 7223367171d1..44663e8ac9a1 100644
--- a/drivers/gpu/drm/i915/display/intel_dp.c
+++ b/drivers/gpu/drm/i915/display/intel_dp.c
@@ -5470,22 +5470,32 @@ intel_dp_autotest_phy_ddi_disable(struct intel_dp *intel_dp)
 	struct drm_i915_private *dev_priv = to_i915(dev);
 	struct intel_crtc *crtc = to_intel_crtc(intel_dig_port->base.base.crtc);
 	enum pipe pipe = crtc->pipe;
-	u32 trans_ddi_func_ctl_value, trans_conf_value, dp_tp_ctl_value;
+	u32 trans_ddi_func_ctl_value, trans_conf_value, dp_tp_ctl_value, trans_ddi_port_mask;
+	enum port port = intel_dig_port->base.port;
+	i915_reg_t dp_tp_reg;
+
+	if (IS_ELKHARTLAKE(dev_priv)) {
+		dp_tp_reg = DP_TP_CTL(port);
+		trans_ddi_port_mask = TRANS_DDI_PORT_MASK;
+	} else if (IS_TIGERLAKE(dev_priv)) {
+		dp_tp_reg = TGL_DP_TP_CTL(pipe);
+		trans_ddi_port_mask = TGL_TRANS_DDI_PORT_MASK;
+	}
 
 	trans_ddi_func_ctl_value = intel_de_read(dev_priv,
 						 TRANS_DDI_FUNC_CTL(pipe));
 	trans_conf_value = intel_de_read(dev_priv, PIPECONF(pipe));
-	dp_tp_ctl_value = intel_de_read(dev_priv, TGL_DP_TP_CTL(pipe));
 
+	dp_tp_ctl_value = intel_de_read(dev_priv, dp_tp_reg);
 	trans_ddi_func_ctl_value &= ~(TRANS_DDI_FUNC_ENABLE |
-				      TGL_TRANS_DDI_PORT_MASK);
+					trans_ddi_port_mask);
 	trans_conf_value &= ~PIPECONF_ENABLE;
 	dp_tp_ctl_value &= ~DP_TP_CTL_ENABLE;
 
 	intel_de_write(dev_priv, PIPECONF(pipe), trans_conf_value);
 	intel_de_write(dev_priv, TRANS_DDI_FUNC_CTL(pipe),
 		       trans_ddi_func_ctl_value);
-	intel_de_write(dev_priv, TGL_DP_TP_CTL(pipe), dp_tp_ctl_value);
+	intel_de_write(dev_priv, dp_tp_reg, dp_tp_ctl_value);
 }
 
 static void
@@ -5497,20 +5507,28 @@ intel_dp_autotest_phy_ddi_enable(struct intel_dp *intel_dp, uint8_t lane_cnt)
 	enum port port = intel_dig_port->base.port;
 	struct intel_crtc *crtc = to_intel_crtc(intel_dig_port->base.base.crtc);
 	enum pipe pipe = crtc->pipe;
-	u32 trans_ddi_func_ctl_value, trans_conf_value, dp_tp_ctl_value;
+	u32 trans_ddi_func_ctl_value, trans_conf_value, dp_tp_ctl_value, trans_ddi_sel_port;
+	i915_reg_t dp_tp_reg;
+
+	if (IS_ELKHARTLAKE(dev_priv)) {
+		dp_tp_reg = DP_TP_CTL(port);
+		trans_ddi_sel_port = TRANS_DDI_SELECT_PORT(port);
+	} else if (IS_TIGERLAKE(dev_priv)) {
+		dp_tp_reg = TGL_DP_TP_CTL(pipe);
+		trans_ddi_sel_port = TGL_TRANS_DDI_SELECT_PORT(port);
+	}
 
 	trans_ddi_func_ctl_value = intel_de_read(dev_priv,
 						 TRANS_DDI_FUNC_CTL(pipe));
 	trans_conf_value = intel_de_read(dev_priv, PIPECONF(pipe));
 	dp_tp_ctl_value = intel_de_read(dev_priv, TGL_DP_TP_CTL(pipe));
-
 	trans_ddi_func_ctl_value |= TRANS_DDI_FUNC_ENABLE |
-				    TGL_TRANS_DDI_SELECT_PORT(port);
+				    trans_ddi_sel_port;
 	trans_conf_value |= PIPECONF_ENABLE;
 	dp_tp_ctl_value |= DP_TP_CTL_ENABLE;
 
 	intel_de_write(dev_priv, PIPECONF(pipe), trans_conf_value);
-	intel_de_write(dev_priv, TGL_DP_TP_CTL(pipe), dp_tp_ctl_value);
+	intel_de_write(dev_priv, dp_tp_reg, dp_tp_ctl_value);
 	intel_de_write(dev_priv, TRANS_DDI_FUNC_CTL(pipe),
 		       trans_ddi_func_ctl_value);
 }
@@ -5557,6 +5575,7 @@ static u8 intel_dp_autotest_phy_pattern(struct intel_dp *intel_dp)
 static void intel_dp_handle_test_request(struct intel_dp *intel_dp)
 {
 	struct drm_i915_private *i915 = dp_to_i915(intel_dp);
+	struct drm_i915_private *dev_priv = i915;
 	u8 response = DP_TEST_NAK;
 	u8 request = 0;
 	int status;
@@ -5582,6 +5601,11 @@ static void intel_dp_handle_test_request(struct intel_dp *intel_dp)
 		response = intel_dp_autotest_edid(intel_dp);
 		break;
 	case DP_TEST_LINK_PHY_TEST_PATTERN:
+		if (!IS_ELKHARTLAKE(dev_priv) || !IS_TIGERLAKE(dev_priv)) {
+			drm_dbg_kms(&i915->drm,
+				"PHY compliance for platform not supported\n");
+			return;
+		}
 		drm_dbg_kms(&i915->drm, "PHY_PATTERN test requested\n");
 		response = intel_dp_autotest_phy_pattern(intel_dp);
 		break;
-- 
2.7.4

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