[Intel-gfx] [PATCH 3/3] drm/i915/icl: Cleanup combo PHY aux power well handlers

[Matt Roper]

Now that the combo PHY aux power well handlers are used exclusively on
Icelake, we can drop a bunch of the extra tests.  While we're at it,
also switch these over to using intel_uncore_rmw() for the relevant
register updates.

Cc: Lucas De Marchi <lucas.demarchi at intel.com>
Signed-off-by: Matt Roper <matthew.d.roper at intel.com>
---
 .../drm/i915/display/intel_display_power.c    | 40 ++++++++-----------
 1 file changed, 16 insertions(+), 24 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_display_power.c b/drivers/gpu/drm/i915/display/intel_display_power.c
index 52f2332e0ab8..f02667a4e62b 100644
--- a/drivers/gpu/drm/i915/display/intel_display_power.c
+++ b/drivers/gpu/drm/i915/display/intel_display_power.c
@@ -418,31 +418,23 @@ icl_combo_phy_aux_power_well_enable(struct drm_i915_private *dev_priv,
 	int pw_idx = power_well->desc->hsw.idx;
 	enum phy phy = ICL_AUX_PW_TO_PHY(pw_idx);
 	u32 val;
-	int wa_idx_max;
+
+	WARN_ON(!IS_ICELAKE(dev_priv));
+	WARN_ON(intel_phy_is_combo(dev_priv, phy));
 
 	val = I915_READ(regs->driver);
 	I915_WRITE(regs->driver, val | HSW_PWR_WELL_CTL_REQ(pw_idx));
 
-	if (INTEL_GEN(dev_priv) < 12) {
-		val = I915_READ(ICL_PORT_CL_DW12(phy));
-		I915_WRITE(ICL_PORT_CL_DW12(phy), val | ICL_LANE_ENABLE_AUX);
-	}
+	intel_uncore_rmw(&dev_priv->uncore, ICL_PORT_CL_DW12(phy), 0,
+			 ICL_LANE_ENABLE_AUX);
 
 	hsw_wait_for_power_well_enable(dev_priv, power_well);
 
-	/* Display WA #1178: icl, tgl */
-	if (IS_TIGERLAKE(dev_priv))
-		wa_idx_max = ICL_PW_CTL_IDX_AUX_C;
-	else
-		wa_idx_max = ICL_PW_CTL_IDX_AUX_B;
-
-	if (!IS_ELKHARTLAKE(dev_priv) &&
-	    pw_idx >= ICL_PW_CTL_IDX_AUX_A && pw_idx <= wa_idx_max &&
-	    !intel_bios_is_port_edp(dev_priv, (enum port)phy)) {
-		val = I915_READ(ICL_AUX_ANAOVRD1(pw_idx));
-		val |= ICL_AUX_ANAOVRD1_ENABLE | ICL_AUX_ANAOVRD1_LDO_BYPASS;
-		I915_WRITE(ICL_AUX_ANAOVRD1(pw_idx), val);
-	}
+	if (pw_idx >= ICL_PW_CTL_IDX_AUX_A && pw_idx <= ICL_PW_CTL_IDX_AUX_B &&
+	    !intel_bios_is_port_edp(dev_priv, (enum port)phy))
+		intel_uncore_rmw(&dev_priv->uncore, ICL_AUX_ANAOVRD1(pw_idx), 0,
+				 ICL_AUX_ANAOVRD1_ENABLE |
+				 ICL_AUX_ANAOVRD1_LDO_BYPASS);
 }
 
 static void
@@ -454,13 +446,13 @@ icl_combo_phy_aux_power_well_disable(struct drm_i915_private *dev_priv,
 	enum phy phy = ICL_AUX_PW_TO_PHY(pw_idx);
 	u32 val;
 
-	if (INTEL_GEN(dev_priv) < 12) {
-		val = I915_READ(ICL_PORT_CL_DW12(phy));
-		I915_WRITE(ICL_PORT_CL_DW12(phy), val & ~ICL_LANE_ENABLE_AUX);
-	}
+	WARN_ON(!IS_ICELAKE(dev_priv));
+	WARN_ON(intel_phy_is_combo(dev_priv, phy));
 
-	val = I915_READ(regs->driver);
-	I915_WRITE(regs->driver, val & ~HSW_PWR_WELL_CTL_REQ(pw_idx));
+	intel_uncore_rmw(&dev_priv->uncore, ICL_PORT_CL_DW12(phy),
+			 ICL_LANE_ENABLE_AUX, 0);
+	intel_uncore_rmw(&dev_priv->uncore, regs->driver,
+			 HSW_PWR_WELL_CTL_REQ(pw_idx), 0);
 
 	hsw_wait_for_power_well_disable(dev_priv, power_well);
 }
-- 
2.23.0