> -----Original Message-----
> From: Intel-gfx <intel-gfx-bounces@xxxxxxxxxxxxxxxxxxxxx> On Behalf Of Matt
> Roper
> Sent: Saturday, May 8, 2021 5:28 AM
> To: intel-gfx@xxxxxxxxxxxxxxxxxxxxx
> Subject: [PATCH v3 45/48] drm/i915/adl_p: Implement
> Wa_22011091694
>
> From: José Roberto de Souza <jose.souza@xxxxxxxxx>
>
> Adding a new hook to ADL-P just to avoid another platform check in
> gen12lp_init_clock_gating() but also open to it.
>
> BSpec: 54369
> Cc: Matt Roper <matthew.d.roper@xxxxxxxxx>
> Cc: Anusha Srivatsa <anusha.srivatsa@xxxxxxxxx>
> Signed-off-by: José Roberto de Souza <jose.souza@xxxxxxxxx>
> Signed-off-by: Clinton Taylor <Clinton.A.Taylor@xxxxxxxxx>
> Signed-off-by: Matt Roper <matthew.d.roper@xxxxxxxxx>
Reviewed-by: Mika Kahola <mika.kahola@xxxxxxxxx>
> ---
> drivers/gpu/drm/i915/i915_reg.h | 3 +++ drivers/gpu/drm/i915/intel_pm.c
> | 12 +++++++++++-
> 2 files changed, 14 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/i915/i915_reg.h
> b/drivers/gpu/drm/i915/i915_reg.h index 4c356fa9055f..6fd126b64727
> 100644
> --- a/drivers/gpu/drm/i915/i915_reg.h
> +++ b/drivers/gpu/drm/i915/i915_reg.h
> @@ -4185,6 +4185,9 @@ enum {
> #define GEN9_CLKGATE_DIS_4 _MMIO(0x4653C)
> #define BXT_GMBUS_GATING_DIS (1 << 14)
>
> +#define GEN9_CLKGATE_DIS_5 _MMIO(0x46540)
> +#define DPCE_GATING_DIS REG_BIT(17)
> +
> #define _CLKGATE_DIS_PSL_A 0x46520
> #define _CLKGATE_DIS_PSL_B 0x46524
> #define _CLKGATE_DIS_PSL_C 0x46528
> diff --git a/drivers/gpu/drm/i915/intel_pm.c
> b/drivers/gpu/drm/i915/intel_pm.c index 36da17e1aa3c..013a5aef4c29
> 100644
> --- a/drivers/gpu/drm/i915/intel_pm.c
> +++ b/drivers/gpu/drm/i915/intel_pm.c
> @@ -7370,6 +7370,14 @@ static void gen12lp_init_clock_gating(struct
> drm_i915_private *dev_priv)
> CLKREQ_POLICY_MEM_UP_OVRD, 0);
> }
>
> +static void adlp_init_clock_gating(struct drm_i915_private *dev_priv) {
> + gen12lp_init_clock_gating(dev_priv);
> +
> + /* Wa_22011091694:adlp */
> + intel_de_rmw(dev_priv, GEN9_CLKGATE_DIS_5, 0,
> DPCE_GATING_DIS); }
> +
> static void dg1_init_clock_gating(struct drm_i915_private *dev_priv) {
> gen12lp_init_clock_gating(dev_priv);
> @@ -7847,7 +7855,9 @@ static void nop_init_clock_gating(struct
> drm_i915_private *dev_priv)
> */
> void intel_init_clock_gating_hooks(struct drm_i915_private *dev_priv) {
> - if (IS_DG1(dev_priv))
> + if (IS_ALDERLAKE_P(dev_priv))
> + dev_priv->display.init_clock_gating = adlp_init_clock_gating;
> + else if (IS_DG1(dev_priv))
> dev_priv->display.init_clock_gating = dg1_init_clock_gating;
> else if (IS_GEN(dev_priv, 12))
> dev_priv->display.init_clock_gating =
> gen12lp_init_clock_gating;
> --
> 2.25.4
>
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