drm/i915/dg2: Add Wa_14010547955
This workaround is documented a bit strangely in the bspec; it's listed
as an A0 workaround, but the description clarifies that the workaround
is implicitly handled by the hardware and what the driver really needs
to do is program a chicken bit to reenable some internal behavior.
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Clint Taylor <Clinton.A.Taylor@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20211116174818.2128062-3-matthew.d.roper@intel.com
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 47fcd10..1592311 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -8483,8 +8483,9 @@ enum {
_PIPEB_CHICKEN)
#define UNDERRUN_RECOVERY_DISABLE_ADLP REG_BIT(30)
#define UNDERRUN_RECOVERY_ENABLE_DG2 REG_BIT(30)
-#define PIXEL_ROUNDING_TRUNC_FB_PASSTHRU (1 << 15)
-#define PER_PIXEL_ALPHA_BYPASS_EN (1 << 7)
+#define PIXEL_ROUNDING_TRUNC_FB_PASSTHRU REG_BIT(15)
+#define DG2_RENDER_CCSTAG_4_3_EN REG_BIT(12)
+#define PER_PIXEL_ALPHA_BYPASS_EN REG_BIT(7)
#define FF_MODE2 _MMIO(0x6604)
#define FF_MODE2_GS_TIMER_MASK REG_GENMASK(31, 24)
