On Wed, May 14, 2014 at 09:07:53PM +0530, deepak.s@xxxxxxxxxxxxxxx wrote:
> From: Deepak S <deepak.s@xxxxxxxxxxxxxxx>
>
> In BDW, Apart from unmasking up/down threshold interrupts. we need
> to umask bit 32 of PM_INTRMASK to route interrupts to target via Display
> Interface.
>
> v2: Add (1<<31) mask (Ville)
>
> v3: Add Gen check for the mask (ville)
>
> Signed-off-by: Deepak S <deepak.s@xxxxxxxxxxxxxxx>
Reviewed-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
> ---
> drivers/gpu/drm/i915/i915_reg.h | 1 +
> drivers/gpu/drm/i915/intel_pm.c | 3 +++
> 2 files changed, 4 insertions(+)
>
> diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
> index ca4f8b9..c850254 100644
> --- a/drivers/gpu/drm/i915/i915_reg.h
> +++ b/drivers/gpu/drm/i915/i915_reg.h
> @@ -5112,6 +5112,7 @@ enum punit_power_well {
> #define GEN6_RC6p_THRESHOLD 0xA0BC
> #define GEN6_RC6pp_THRESHOLD 0xA0C0
> #define GEN6_PMINTRMSK 0xA168
> +#define GEN8_PMINTR_REDIRECT_TO_NON_DISP (1<<31)
>
> #define GEN6_PMISR 0x44020
> #define GEN6_PMIMR 0x44024 /* rps_lock */
> diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
> index 0e69c97..270b659 100644
> --- a/drivers/gpu/drm/i915/intel_pm.c
> +++ b/drivers/gpu/drm/i915/intel_pm.c
> @@ -3114,6 +3114,9 @@ static u32 gen6_rps_pm_mask(struct drm_i915_private *dev_priv, u8 val)
> if (INTEL_INFO(dev_priv->dev)->gen <= 7 && !IS_HASWELL(dev_priv->dev))
> mask |= GEN6_PM_RP_UP_EI_EXPIRED;
>
> + if (IS_GEN8(dev_priv->dev))
> + mask |= GEN8_PMINTR_REDIRECT_TO_NON_DISP;
> +
> return ~mask;
> }
>
> --
> 1.9.1
>
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--
Ville Syrjälä
Intel OTC
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