[Intel-gfx] [PATCH v2 1/6] drm/i915/icl: Add WaEnable32PlaneMode

[Srivatsa, Anusha]

>-----Original Message-----
>From: Sripada, Radhakrishna
>Sent: Thursday, October 4, 2018 11:30 AM
>To: intel-gfx at lists.freedesktop.org
>Cc: Sripada, Radhakrishna <radhakrishna.sripada at intel.com>; Chris Wilson
><chris at chris-wilson.co.uk>; Thierry, Michel <michel.thierry at intel.com>; Ausmus,
>James <james.ausmus at intel.com>; Srivatsa, Anusha
><anusha.srivatsa at intel.com>
>Subject: [PATCH v2 1/6] 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 at chris-wilson.co.uk>
>Cc: Michel Thierry <michel.thierry at intel.com>
>Cc: James Ausmus <james.ausmus at intel.com>
>Cc: Anusha Srivatsa <anusha.srivatsa at intel.com>
>Signed-off-by: Radhakrishna Sripada <radhakrishna.sripada at intel.com>
Reviewed-by: Anusha Srivatsa <anusha.srivatsa at intel.com>

>---
> drivers/gpu/drm/i915/i915_reg.h | 1 +
> drivers/gpu/drm/i915/intel_pm.c | 4 ++++
> 2 files changed, 5 insertions(+)
>
>diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
>index a71c507cfb9b..4fb8e9eef312 100644
>--- a/drivers/gpu/drm/i915/i915_reg.h
>+++ b/drivers/gpu/drm/i915/i915_reg.h
>@@ -2573,6 +2573,7 @@ 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 1392aa56a55a..d4a464246760 100644
>--- a/drivers/gpu/drm/i915/intel_pm.c
>+++ b/drivers/gpu/drm/i915/intel_pm.c
>@@ -8734,6 +8734,10 @@ 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)
>--
>2.9.3