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Commit d1b4eefd authored by Mika Kuoppala's avatar Mika Kuoppala Committed by Mika Kuoppala
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drm/i915/gen9: Add WaFbcHighMemBwCorruptionAvoidance 



Add this fbc related workaround for all gen9

Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: default avatarMika Kuoppala <mika.kuoppala@intel.com>
Reviewed-by: default avatarVille Syrjälä <ville.syrjala@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1465309159-30531-28-git-send-email-mika.kuoppala@intel.com
parent 031cd8c8

drivers/gpu/drm/i915/i915_reg.h

+1 −0
Original line number Diff line number Diff line
@@ -2209,6 +2209,7 @@ enum skl_disp_power_wells { 
#define ILK_DPFC_STATUS		_MMIO(0x43210)

#define ILK_DPFC_FENCE_YOFF	_MMIO(0x43218)

#define ILK_DPFC_CHICKEN	_MMIO(0x43224)

#define   ILK_DPFC_DISABLE_DUMMY0 (1<<8)

#define   ILK_DPFC_NUKE_ON_ANY_MODIFICATION	(1<<23)

#define ILK_FBC_RT_BASE		_MMIO(0x2128)

#define   ILK_FBC_RT_VALID	(1<<0)

drivers/gpu/drm/i915/intel_pm.c

+4 −0
Original line number Diff line number Diff line
@@ -75,6 +75,10 @@ static void gen9_init_clock_gating(struct drm_device *dev) 
	I915_WRITE(DISP_ARB_CTL, I915_READ(DISP_ARB_CTL) |

		   DISP_FBC_WM_DIS |

		   DISP_FBC_MEMORY_WAKE);



	/* WaFbcHighMemBwCorruptionAvoidance:skl,bxt,kbl */

	I915_WRITE(ILK_DPFC_CHICKEN, I915_READ(ILK_DPFC_CHICKEN) |

		   ILK_DPFC_DISABLE_DUMMY0);

}



static void bxt_init_clock_gating(struct drm_device *dev)