Commit cd7a8811 authored by Ville Syrjälä's avatar Ville Syrjälä
Browse files

drm/i915: Limit WaFbcHighMemBwCorruptionAvoidance to skl and bxt 



Supposedly only skl/bxt need WaFbcHighMemBwCorruptionAvoidance.
Do not apply to the other gen9 platforms.

Signed-off-by: default avatarVille Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200708131223.9519-3-ville.syrjala@linux.intel.com


Reviewed-by: default avatarJosé Roberto de Souza <jose.souza@intel.com>
parent c4615b2b

drivers/gpu/drm/i915/intel_pm.c

+8 −4
Original line number Diff line number Diff line
@@ -98,10 +98,6 @@ static void gen9_init_clock_gating(struct drm_i915_private *dev_priv) 
	I915_WRITE(DISP_ARB_CTL, I915_READ(DISP_ARB_CTL) |

		   DISP_FBC_MEMORY_WAKE);



	/* WaFbcHighMemBwCorruptionAvoidance:skl,bxt,kbl,cfl */

	I915_WRITE(ILK_DPFC_CHICKEN, I915_READ(ILK_DPFC_CHICKEN) |

		   ILK_DPFC_DISABLE_DUMMY0);



	if (IS_SKYLAKE(dev_priv)) {

		/* WaDisableDopClockGating */

		I915_WRITE(GEN7_MISCCPCTL, I915_READ(GEN7_MISCCPCTL)
@@ -142,6 +138,10 @@ static void bxt_init_clock_gating(struct drm_i915_private *dev_priv) 
	/* WaFbcTurnOffFbcWatermark:bxt */

	I915_WRITE(DISP_ARB_CTL, I915_READ(DISP_ARB_CTL) |

		   DISP_FBC_WM_DIS);



	/* WaFbcHighMemBwCorruptionAvoidance:bxt */

	I915_WRITE(ILK_DPFC_CHICKEN, I915_READ(ILK_DPFC_CHICKEN) |

		   ILK_DPFC_DISABLE_DUMMY0);

}



static void glk_init_clock_gating(struct drm_i915_private *dev_priv)
@@ -7238,6 +7238,10 @@ static void skl_init_clock_gating(struct drm_i915_private *dev_priv) 
	/* WaFbcNukeOnHostModify:skl */

	I915_WRITE(ILK_DPFC_CHICKEN, I915_READ(ILK_DPFC_CHICKEN) |

		   ILK_DPFC_NUKE_ON_ANY_MODIFICATION);



	/* WaFbcHighMemBwCorruptionAvoidance:skl */

	I915_WRITE(ILK_DPFC_CHICKEN, I915_READ(ILK_DPFC_CHICKEN) |

		   ILK_DPFC_DISABLE_DUMMY0);

}



static void bdw_init_clock_gating(struct drm_i915_private *dev_priv)

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