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drm/i915/gen9: Add WaInPlaceDecompressionHang

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Add this workaround to prevent hang when in place compression
is used.

References: HSD#2135774
Cc: stable@vger.kernel.org
Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>
Reviewed-by: Arun Siluvery <arun.siluvery@linux.intel.com>
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
This commit is contained in:
Mika Kuoppala
2016-07-20 14:26:12 +03:00
committed by Joonas Lahtinen
parent 39df91905d
commit 4ba9c1f7c7
3 changed files with 19 additions and 0 deletions
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3
drivers/gpu/drm/i915/i915_reg.h
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@@ -1686,6 +1686,9 @@ enum skl_disp_power_wells {
#define GEN7_TLB_RD_ADDR _MMIO(0x4700)
#define GEN9_GAMT_ECO_REG_RW_IA _MMIO(0x4ab0)
#define GAMT_ECO_ENABLE_IN_PLACE_DECOMPRESS (1<<18)
#define GAMT_CHKN_BIT_REG _MMIO(0x4ab8)
#define GAMT_CHKN_DISABLE_DYNAMIC_CREDIT_SHARING (1<<28)