[Intel-gfx] [PATCH 10/20] drm/i915/cnl: Move GT and Display workarounds from init_clock_gating

[Oscar Mateo]

To their rightful place inside intel_workarounds.c

v2: classify WaSarbUnitClockGatingDisable as GT WA (Ville)

Signed-off-by: Oscar Mateo <oscar.mateo at intel.com>
Reviewed-by: Chris Wilson <chris at chris-wilson.co.uk> (v1)
Cc: Rodrigo Vivi <rodrigo.vivi at intel.com>
Cc: Mika Kuoppala <mika.kuoppala at linux.intel.com>
Cc: Ville Syrjälä <ville.syrjala at linux.intel.com>
---
 drivers/gpu/drm/i915/intel_pm.c          | 32 +-------------------------------
 drivers/gpu/drm/i915/intel_workarounds.c | 26 +++++++++++++++++++++++++-
 2 files changed, 26 insertions(+), 32 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index 0d0e84b..ff3ac6c 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -8519,36 +8519,6 @@ static void cnp_init_clock_gating(struct drm_i915_private *dev_priv)
 		   CNP_PWM_CGE_GATING_DISABLE);
 }
 
-static void cnl_init_clock_gating(struct drm_i915_private *dev_priv)
-{
-	u32 val;
-	cnp_init_clock_gating(dev_priv);
-
-	/* This is not an Wa. Enable for better image quality */
-	I915_WRITE(_3D_CHICKEN3,
-		   _MASKED_BIT_ENABLE(_3D_CHICKEN3_AA_LINE_QUALITY_FIX_ENABLE));
-
-	/* WaEnableChickenDCPR:cnl */
-	I915_WRITE(GEN8_CHICKEN_DCPR_1,
-		   I915_READ(GEN8_CHICKEN_DCPR_1) | MASK_WAKEMEM);
-
-	/* WaFbcWakeMemOn:cnl */
-	I915_WRITE(DISP_ARB_CTL, I915_READ(DISP_ARB_CTL) |
-		   DISP_FBC_MEMORY_WAKE);
-
-	/* WaSarbUnitClockGatingDisable:cnl (pre-prod) */
-	if (IS_CNL_REVID(dev_priv, CNL_REVID_A0, CNL_REVID_B0))
-		I915_WRITE(SLICE_UNIT_LEVEL_CLKGATE,
-			   I915_READ(SLICE_UNIT_LEVEL_CLKGATE) |
-			   SARBUNIT_CLKGATE_DIS);
-
-	/* Display WA #1133: WaFbcSkipSegments:cnl */
-	val = I915_READ(ILK_DPFC_CHICKEN);
-	val &= ~GLK_SKIP_SEG_COUNT_MASK;
-	val |= GLK_SKIP_SEG_EN | GLK_SKIP_SEG_COUNT(1);
-	I915_WRITE(ILK_DPFC_CHICKEN, val);
-}
-
 static void cfl_init_clock_gating(struct drm_i915_private *dev_priv)
 {
 	cnp_init_clock_gating(dev_priv);
@@ -9040,7 +9010,7 @@ static void nop_init_clock_gating(struct drm_i915_private *dev_priv)
 void intel_init_clock_gating_hooks(struct drm_i915_private *dev_priv)
 {
 	if (IS_CANNONLAKE(dev_priv))
-		dev_priv->display.init_clock_gating = cnl_init_clock_gating;
+		dev_priv->display.init_clock_gating = nop_init_clock_gating;
 	else if (IS_COFFEELAKE(dev_priv))
 		dev_priv->display.init_clock_gating = cfl_init_clock_gating;
 	else if (IS_SKYLAKE(dev_priv))
diff --git a/drivers/gpu/drm/i915/intel_workarounds.c b/drivers/gpu/drm/i915/intel_workarounds.c
index 3e643b6..82defb1 100644
--- a/drivers/gpu/drm/i915/intel_workarounds.c
+++ b/drivers/gpu/drm/i915/intel_workarounds.c
@@ -724,6 +724,15 @@ static int cfl_gt_workarounds_init_early(struct drm_i915_private *dev_priv)
 
 static int cnl_gt_workarounds_init_early(struct drm_i915_private *dev_priv)
 {
+	/* This is not an Wa. Enable for better image quality */
+	GT_WA_SET_BIT_MASKED(_3D_CHICKEN3,
+			     _3D_CHICKEN3_AA_LINE_QUALITY_FIX_ENABLE);
+
+	/* WaSarbUnitClockGatingDisable:cnl (pre-prod) */
+	if (IS_CNL_REVID(dev_priv, CNL_REVID_A0, CNL_REVID_B0))
+		GT_WA_SET_BIT(SLICE_UNIT_LEVEL_CLKGATE,
+			      SARBUNIT_CLKGATE_DIS);
+
 	/* WaDisableI2mCycleOnWRPort:cnl (pre-prod) */
 	if (IS_CNL_REVID(dev_priv, CNL_REVID_B0, CNL_REVID_B0))
 		GT_WA_SET_BIT(GAMT_CHKN_BIT_REG,
@@ -856,6 +865,22 @@ static int cfl_display_workarounds_init_early(struct drm_i915_private *dev_priv)
 
 static int cnl_display_workarounds_init_early(struct drm_i915_private *dev_priv)
 {
+	if (HAS_PCH_CNP(dev_priv)) {
+		/* Wa #1181 */
+		DISPLAY_WA_SET_BIT(SOUTH_DSPCLK_GATE_D,
+				   CNP_PWM_CGE_GATING_DISABLE);
+	}
+
+	/* WaEnableChickenDCPR:cnl */
+	DISPLAY_WA_SET_BIT(GEN8_CHICKEN_DCPR_1, MASK_WAKEMEM);
+
+	/* WaFbcWakeMemOn:cnl */
+	DISPLAY_WA_SET_BIT(DISP_ARB_CTL, DISP_FBC_MEMORY_WAKE);
+
+	/* Display WA #1133: WaFbcSkipSegments:cnl */
+	DISPLAY_WA_SET_FIELD(ILK_DPFC_CHICKEN, GLK_SKIP_SEG_COUNT_MASK,
+			     GLK_SKIP_SEG_EN | GLK_SKIP_SEG_COUNT(1));
+
 	return 0;
 }
 
@@ -863,7 +888,6 @@ static int display_workarounds_init_early(struct drm_i915_private *dev_priv)
 {
 	int err;
 
-	DISPLAY_WA_SET_BIT(_MMIO(0), 0); /* shut up gcc temporarily */
 	dev_priv->workarounds.display_wa_count = 0;
 
 	if (INTEL_GEN(dev_priv) < 8)
-- 
1.9.1