drm/i915/icl: Add WaEnable32PlaneMode

Gen11 Display suports 32 planes in total. Enable the new format in context
status to be used and expanded to 32 planes.

V2: Move the WA to display WA's(Chris)

Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Michel Thierry <michel.thierry@intel.com>
Cc: James Ausmus <james.ausmus@intel.com>
Reviewed-by: Anusha Srivatsa <anusha.srivatsa@intel.com>
Signed-off-by: Radhakrishna Sripada <radhakrishna.sripada@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20181030084504.21537-1-radhakrishna.sripada@intel.com

diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 6c7df17..41f3020 100644 (file)
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -2541,6 +2541,7 @@ enum i915_power_well_id {
 /* chicken reg for WaConextSwitchWithConcurrentTLBInvalidate */
 #define GEN9_CSFE_CHICKEN1_RCS _MMIO(0x20D4)
 #define   GEN9_PREEMPT_GPGPU_SYNC_SWITCH_DISABLE (1 << 2)
+#define   GEN11_ENABLE_32_PLANE_MODE (1 << 7)
 
 /* WaClearTdlStateAckDirtyBits */
 #define GEN8_STATE_ACK         _MMIO(0x20F0)

diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index 2c3dc10..9da8ff2 100644 (file)
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -8854,6 +8854,10 @@ static void icl_init_clock_gating(struct drm_i915_private *dev_priv)
        /* This is not an Wa. Enable to reduce Sampler power */
        I915_WRITE(GEN10_DFR_RATIO_EN_AND_CHICKEN,
                   I915_READ(GEN10_DFR_RATIO_EN_AND_CHICKEN) & ~DFR_DISABLE);
+
+       /* WaEnable32PlaneMode:icl */
+       I915_WRITE(GEN9_CSFE_CHICKEN1_RCS,
+                  _MASKED_BIT_ENABLE(GEN11_ENABLE_32_PLANE_MODE));
 }
 
 static void cnp_init_clock_gating(struct drm_i915_private *dev_priv)