From: Ville Syrjälä Date: Wed, 8 Jul 2020 13:12:22 +0000 (+0300) Subject: drm/i915: Limit WaFbcHighMemBwCorruptionAvoidance to skl and bxt X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=cd7a88113d102e42320b897c306bb52018669a21;p=linux.git 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: Ville Syrjälä Link: https://patchwork.freedesktop.org/patch/msgid/20200708131223.9519-3-ville.syrjala@linux.intel.com Reviewed-by: José Roberto de Souza --- diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index 7aef450481ea3..88e7d6b3212e4 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -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)