diff mbox series

drm/i915: Tweaked Wa_14010685332 for all PCHs

Message ID 20210325093213.20794-1-anshuman.gupta@intel.com (mailing list archive)
State New, archived
Headers show
Series drm/i915: Tweaked Wa_14010685332 for all PCHs | expand

Commit Message

Gupta, Anshuman March 25, 2021, 9:32 a.m. UTC
dispcnlunit1_cp_xosc_clkreq clock observed to be active on TGL-H platform
despite Wa_14010685332 original sequence thus blocks entry to deeper s0ix state.

The Tweaked Wa_14010685332 sequence fixes this issue, therefore use tweaked
Wa_14010685332 sequence for every PCH since PCH_CNP.

Fixes: b896898c7369 ("drm/i915: Tweaked Wa_14010685332 for PCHs used on gen11 platforms")
Cc: Matt Roper <matthew.d.roper@intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Anshuman Gupta <anshuman.gupta@intel.com>
---
 .../drm/i915/display/intel_display_power.c    | 18 +++++++++-------
 drivers/gpu/drm/i915/i915_irq.c               | 21 -------------------
 2 files changed, 10 insertions(+), 29 deletions(-)

Comments

Rodrigo Vivi March 25, 2021, 9:56 a.m. UTC | #1
On Thu, Mar 25, 2021 at 03:02:13PM +0530, Anshuman Gupta wrote:
> dispcnlunit1_cp_xosc_clkreq clock observed to be active on TGL-H platform
> despite Wa_14010685332 original sequence thus blocks entry to deeper s0ix state.
> 
> The Tweaked Wa_14010685332 sequence fixes this issue, therefore use tweaked
> Wa_14010685332 sequence for every PCH since PCH_CNP.
> 
> Fixes: b896898c7369 ("drm/i915: Tweaked Wa_14010685332 for PCHs used on gen11 platforms")
> Cc: Matt Roper <matthew.d.roper@intel.com>
> Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
> Signed-off-by: Anshuman Gupta <anshuman.gupta@intel.com>
> ---
>  .../drm/i915/display/intel_display_power.c    | 18 +++++++++-------
>  drivers/gpu/drm/i915/i915_irq.c               | 21 -------------------
>  2 files changed, 10 insertions(+), 29 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/display/intel_display_power.c b/drivers/gpu/drm/i915/display/intel_display_power.c
> index 7e0eaa872350..4e970be36487 100644
> --- a/drivers/gpu/drm/i915/display/intel_display_power.c
> +++ b/drivers/gpu/drm/i915/display/intel_display_power.c
> @@ -5910,13 +5910,14 @@ void intel_display_power_suspend_late(struct drm_i915_private *i915)
>  {
>  	if (INTEL_GEN(i915) >= 11 || IS_GEN9_LP(i915)) {
>  		bxt_enable_dc9(i915);
> -		/* Tweaked Wa_14010685332:icp,jsp,mcc */
> -		if (INTEL_PCH_TYPE(i915) >= PCH_ICP && INTEL_PCH_TYPE(i915) <= PCH_MCC)
> -			intel_de_rmw(i915, SOUTH_CHICKEN1,
> -				     SBCLK_RUN_REFCLK_DIS, SBCLK_RUN_REFCLK_DIS);
>  	} else if (IS_HASWELL(i915) || IS_BROADWELL(i915)) {
>  		hsw_enable_pc8(i915);
>  	}
> +
> +	/* Tweaked Wa_14010685332:cnp,icp,jsp,mcc,tgp,rkl,adp */

why are you adding "rkl"?
I don't like mixing gpu with pch names...


> +	if (INTEL_PCH_TYPE(i915) == PCH_CNP ||
> +	    (INTEL_PCH_TYPE(i915) >= PCH_ICP && INTEL_PCH_TYPE(i915) < PCH_DG1))

why can't we simply use

if (INTEL_PCH_TYPE(i915) >= PCH_CNP)

?

> +		intel_de_rmw(i915, SOUTH_CHICKEN1, SBCLK_RUN_REFCLK_DIS, SBCLK_RUN_REFCLK_DIS);
>  }
>  
>  void intel_display_power_resume_early(struct drm_i915_private *i915)
> @@ -5924,13 +5925,14 @@ void intel_display_power_resume_early(struct drm_i915_private *i915)
>  	if (INTEL_GEN(i915) >= 11 || IS_GEN9_LP(i915)) {
>  		gen9_sanitize_dc_state(i915);
>  		bxt_disable_dc9(i915);
> -		/* Tweaked Wa_14010685332:icp,jsp,mcc */
> -		if (INTEL_PCH_TYPE(i915) >= PCH_ICP && INTEL_PCH_TYPE(i915) <= PCH_MCC)
> -			intel_de_rmw(i915, SOUTH_CHICKEN1, SBCLK_RUN_REFCLK_DIS, 0);
> -
>  	} else if (IS_HASWELL(i915) || IS_BROADWELL(i915)) {
>  		hsw_disable_pc8(i915);
>  	}
> +
> +	/* Tweaked Wa_14010685332:cnp,icp,jsp,mcc,tgp,rkl,adp */
> +	if (INTEL_PCH_TYPE(i915) == PCH_CNP ||
> +	    (INTEL_PCH_TYPE(i915) >= PCH_ICP && INTEL_PCH_TYPE(i915) < PCH_DG1))
> +		intel_de_rmw(i915, SOUTH_CHICKEN1, SBCLK_RUN_REFCLK_DIS, 0);
>  }
>  
>  void intel_display_power_suspend(struct drm_i915_private *i915)
> diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
> index 44aed4cbf894..8abcd35df926 100644
> --- a/drivers/gpu/drm/i915/i915_irq.c
> +++ b/drivers/gpu/drm/i915/i915_irq.c
> @@ -3040,24 +3040,6 @@ static void valleyview_irq_reset(struct drm_i915_private *dev_priv)
>  	spin_unlock_irq(&dev_priv->irq_lock);
>  }
>  
> -static void cnp_display_clock_wa(struct drm_i915_private *dev_priv)
> -{
> -	struct intel_uncore *uncore = &dev_priv->uncore;
> -
> -	/*
> -	 * Wa_14010685332:cnp/cmp,tgp,adp
> -	 * TODO: Clarify which platforms this applies to
> -	 * TODO: Figure out if this workaround can be applied in the s0ix suspend/resume handlers as
> -	 * on earlier platforms and whether the workaround is also needed for runtime suspend/resume
> -	 */
> -	if (INTEL_PCH_TYPE(dev_priv) == PCH_CNP ||
> -	    (INTEL_PCH_TYPE(dev_priv) >= PCH_TGP && INTEL_PCH_TYPE(dev_priv) < PCH_DG1)) {
> -		intel_uncore_rmw(uncore, SOUTH_CHICKEN1, SBCLK_RUN_REFCLK_DIS,
> -				 SBCLK_RUN_REFCLK_DIS);
> -		intel_uncore_rmw(uncore, SOUTH_CHICKEN1, SBCLK_RUN_REFCLK_DIS, 0);
> -	}
> -}
> -
>  static void gen8_irq_reset(struct drm_i915_private *dev_priv)
>  {
>  	struct intel_uncore *uncore = &dev_priv->uncore;
> @@ -3082,7 +3064,6 @@ static void gen8_irq_reset(struct drm_i915_private *dev_priv)
>  	if (HAS_PCH_SPLIT(dev_priv))
>  		ibx_irq_reset(dev_priv);
>  
> -	cnp_display_clock_wa(dev_priv);
>  }
>  
>  static void gen11_display_irq_reset(struct drm_i915_private *dev_priv)
> @@ -3123,8 +3104,6 @@ static void gen11_display_irq_reset(struct drm_i915_private *dev_priv)
>  
>  	if (INTEL_PCH_TYPE(dev_priv) >= PCH_ICP)
>  		GEN3_IRQ_RESET(uncore, SDE);
> -
> -	cnp_display_clock_wa(dev_priv);
>  }
>  
>  static void gen11_irq_reset(struct drm_i915_private *dev_priv)
> -- 
> 2.26.2
>
diff mbox series

Patch

diff --git a/drivers/gpu/drm/i915/display/intel_display_power.c b/drivers/gpu/drm/i915/display/intel_display_power.c
index 7e0eaa872350..4e970be36487 100644
--- a/drivers/gpu/drm/i915/display/intel_display_power.c
+++ b/drivers/gpu/drm/i915/display/intel_display_power.c
@@ -5910,13 +5910,14 @@  void intel_display_power_suspend_late(struct drm_i915_private *i915)
 {
 	if (INTEL_GEN(i915) >= 11 || IS_GEN9_LP(i915)) {
 		bxt_enable_dc9(i915);
-		/* Tweaked Wa_14010685332:icp,jsp,mcc */
-		if (INTEL_PCH_TYPE(i915) >= PCH_ICP && INTEL_PCH_TYPE(i915) <= PCH_MCC)
-			intel_de_rmw(i915, SOUTH_CHICKEN1,
-				     SBCLK_RUN_REFCLK_DIS, SBCLK_RUN_REFCLK_DIS);
 	} else if (IS_HASWELL(i915) || IS_BROADWELL(i915)) {
 		hsw_enable_pc8(i915);
 	}
+
+	/* Tweaked Wa_14010685332:cnp,icp,jsp,mcc,tgp,rkl,adp */
+	if (INTEL_PCH_TYPE(i915) == PCH_CNP ||
+	    (INTEL_PCH_TYPE(i915) >= PCH_ICP && INTEL_PCH_TYPE(i915) < PCH_DG1))
+		intel_de_rmw(i915, SOUTH_CHICKEN1, SBCLK_RUN_REFCLK_DIS, SBCLK_RUN_REFCLK_DIS);
 }
 
 void intel_display_power_resume_early(struct drm_i915_private *i915)
@@ -5924,13 +5925,14 @@  void intel_display_power_resume_early(struct drm_i915_private *i915)
 	if (INTEL_GEN(i915) >= 11 || IS_GEN9_LP(i915)) {
 		gen9_sanitize_dc_state(i915);
 		bxt_disable_dc9(i915);
-		/* Tweaked Wa_14010685332:icp,jsp,mcc */
-		if (INTEL_PCH_TYPE(i915) >= PCH_ICP && INTEL_PCH_TYPE(i915) <= PCH_MCC)
-			intel_de_rmw(i915, SOUTH_CHICKEN1, SBCLK_RUN_REFCLK_DIS, 0);
-
 	} else if (IS_HASWELL(i915) || IS_BROADWELL(i915)) {
 		hsw_disable_pc8(i915);
 	}
+
+	/* Tweaked Wa_14010685332:cnp,icp,jsp,mcc,tgp,rkl,adp */
+	if (INTEL_PCH_TYPE(i915) == PCH_CNP ||
+	    (INTEL_PCH_TYPE(i915) >= PCH_ICP && INTEL_PCH_TYPE(i915) < PCH_DG1))
+		intel_de_rmw(i915, SOUTH_CHICKEN1, SBCLK_RUN_REFCLK_DIS, 0);
 }
 
 void intel_display_power_suspend(struct drm_i915_private *i915)
diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
index 44aed4cbf894..8abcd35df926 100644
--- a/drivers/gpu/drm/i915/i915_irq.c
+++ b/drivers/gpu/drm/i915/i915_irq.c
@@ -3040,24 +3040,6 @@  static void valleyview_irq_reset(struct drm_i915_private *dev_priv)
 	spin_unlock_irq(&dev_priv->irq_lock);
 }
 
-static void cnp_display_clock_wa(struct drm_i915_private *dev_priv)
-{
-	struct intel_uncore *uncore = &dev_priv->uncore;
-
-	/*
-	 * Wa_14010685332:cnp/cmp,tgp,adp
-	 * TODO: Clarify which platforms this applies to
-	 * TODO: Figure out if this workaround can be applied in the s0ix suspend/resume handlers as
-	 * on earlier platforms and whether the workaround is also needed for runtime suspend/resume
-	 */
-	if (INTEL_PCH_TYPE(dev_priv) == PCH_CNP ||
-	    (INTEL_PCH_TYPE(dev_priv) >= PCH_TGP && INTEL_PCH_TYPE(dev_priv) < PCH_DG1)) {
-		intel_uncore_rmw(uncore, SOUTH_CHICKEN1, SBCLK_RUN_REFCLK_DIS,
-				 SBCLK_RUN_REFCLK_DIS);
-		intel_uncore_rmw(uncore, SOUTH_CHICKEN1, SBCLK_RUN_REFCLK_DIS, 0);
-	}
-}
-
 static void gen8_irq_reset(struct drm_i915_private *dev_priv)
 {
 	struct intel_uncore *uncore = &dev_priv->uncore;
@@ -3082,7 +3064,6 @@  static void gen8_irq_reset(struct drm_i915_private *dev_priv)
 	if (HAS_PCH_SPLIT(dev_priv))
 		ibx_irq_reset(dev_priv);
 
-	cnp_display_clock_wa(dev_priv);
 }
 
 static void gen11_display_irq_reset(struct drm_i915_private *dev_priv)
@@ -3123,8 +3104,6 @@  static void gen11_display_irq_reset(struct drm_i915_private *dev_priv)
 
 	if (INTEL_PCH_TYPE(dev_priv) >= PCH_ICP)
 		GEN3_IRQ_RESET(uncore, SDE);
-
-	cnp_display_clock_wa(dev_priv);
 }
 
 static void gen11_irq_reset(struct drm_i915_private *dev_priv)