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drm/i915/gen9: Add WaFbcHighMemBwCorruptionAvoidance

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Add this fbc related workaround for all gen9

Cc: Ville Syrjälä <[email protected]>
Signed-off-by: Mika Kuoppala <[email protected]>
Reviewed-by: Ville Syrjälä <[email protected]>
Link: http://patchwork.freedesktop.org/patch/msgid/[email protected]
(cherry picked from commit d1b4eefdea)
Signed-off-by: Mika Kuoppala <[email protected]>
This commit is contained in:
Mika Kuoppala 2016-06-07 17:19:19 +03:00 • committed by Mika Kuoppala
commit a89bd7beb1
2 changed files with 5 additions and 0 deletions
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1
drivers/gpu/drm/i915/i915_reg.h
View file

@ -2206,6 +2206,7 @@ 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)

4
drivers/gpu/drm/i915/intel_pm.c
View file

@ -74,6 +74,10 @@ 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)