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| author | Mika Kuoppala <mika.kuoppala@linux.intel.com> | 2016-06-07 14:19:17 (GMT) |
|---|---|---|
| committer | Mika Kuoppala <mika.kuoppala@intel.com> | 2016-06-08 13:26:57 (GMT) |
| commit | 303d4ea522e8672a1b62d968a5b6764929adc292 (patch) | |
| tree | da02aec723df14f5e07f6dbb2445f24de47871d1 /drivers/gpu/drm/i915/i915_reg.h | |
| parent | 0f78dee6f06a9399d4bdf79575094cc761b872ac (diff) | |
| download | linux-303d4ea522e8672a1b62d968a5b6764929adc292.tar.xz | |
drm/i915/gen9: Add WaFbcWakeMemOn
Set bit 8 in 0x43224 to prevent screen corruption and system
hangs on high memory bandwidth conditions. The same wa also suggest
setting bit 31 on ARB_CTL. According to another workaround we gain
better idle power savings when FBC is enabled.
v2: use correct workaround name
v3: split out overlapping wa for corruption avoidance (Ville)
References: HSD#2137218, HSD#2227171, HSD#2136579, BSID#883
Cc: Paulo Zanoni <paulo.r.zanoni@intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1465309159-30531-26-git-send-email-mika.kuoppala@intel.com
Diffstat (limited to 'drivers/gpu/drm/i915/i915_reg.h')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_reg.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index 8d69f12..da88444 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -6054,6 +6054,7 @@ enum skl_disp_power_wells { #define CHICKEN_PIPESL_1(pipe) _MMIO_PIPE(pipe, _CHICKEN_PIPESL_1_A, _CHICKEN_PIPESL_1_B) #define DISP_ARB_CTL _MMIO(0x45000) +#define DISP_FBC_MEMORY_WAKE (1<<31) #define DISP_TILE_SURFACE_SWIZZLING (1<<13) #define DISP_FBC_WM_DIS (1<<15) #define DISP_ARB_CTL2 _MMIO(0x45004) |