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Code Issues Releases Wiki Activity

drm/i915: Tweaked Wa_14010685332 for all PCHs

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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.

v2:
- removed RKL from comment and simplified condition. [Rodrigo]

Fixes: b896898c73 ("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>
Cc: Imre Deak <imre.deak@intel.com>
Signed-off-by: Anshuman Gupta <anshuman.gupta@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210810113112.31739-2-anshuman.gupta@intel.com
This commit is contained in:
Anshuman Gupta 2021-08-10 17:01:12 +05:30
parent c5589bb5dc
commit 8b46cc6577
2 changed files with 8 additions and 29 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

16
drivers/gpu/drm/i915/display/intel_display_power.c
View file

@ -6329,13 +6329,13 @@ void intel_display_power_suspend_late(struct drm_i915_private *i915)
if (DISPLAY_VER(i915) >= 11 || IS_GEMINILAKE(i915) ||
IS_BROXTON(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,adp */
if (INTEL_PCH_TYPE(i915) >= PCH_CNP && 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)
@ -6344,13 +6344,13 @@ void intel_display_power_resume_early(struct drm_i915_private *i915)
IS_BROXTON(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,adp */
if (INTEL_PCH_TYPE(i915) >= PCH_CNP && 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)

21
drivers/gpu/drm/i915/i915_irq.c
View file

@ -3079,24 +3079,6 @@ 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_display_irq_reset(struct drm_i915_private *dev_priv)
{
struct intel_uncore *uncore = &dev_priv->uncore;
@ -3130,7 +3112,6 @@ 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)
@ -3174,8 +3155,6 @@ 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)