On Wed, Jan 27, 2021 at 03:38:30PM +0530, Tejas Upadhyay wrote:
> For Legacy S3 suspend/resume GEN9 BC needs to enable and
> setup TGP PCH.
>
> Cc: Matt Roper <matthew.d.roper@xxxxxxxxx>
> Signed-off-by: Tejas Upadhyay <tejaskumarx.surendrakumar.upadhyay@xxxxxxxxx>
> ---
> drivers/gpu/drm/i915/i915_irq.c | 36 ++++++++++++++++++++++++---------
> 1 file changed, 27 insertions(+), 9 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
> index a31980f69120..6dcefc3e24ac 100644
> --- a/drivers/gpu/drm/i915/i915_irq.c
> +++ b/drivers/gpu/drm/i915/i915_irq.c
> @@ -3026,8 +3026,20 @@ static void gen8_irq_reset(struct drm_i915_private *dev_priv)
> GEN3_IRQ_RESET(uncore, GEN8_DE_MISC_);
> GEN3_IRQ_RESET(uncore, GEN8_PCU_);
>
> - if (HAS_PCH_SPLIT(dev_priv))
> + if (INTEL_PCH_TYPE(dev_priv) >= PCH_ICP)
> + GEN3_IRQ_RESET(uncore, SDE);
> + else if (HAS_PCH_SPLIT(dev_priv))
> ibx_irq_reset(dev_priv);
> +
> + /* Wa_14010685332:cnp/cmp,tgp,adp */
> + 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);
> + }
Time to refactor instead of copypasta.
> }
>
> static void gen11_display_irq_reset(struct drm_i915_private *dev_priv)
> @@ -3442,6 +3454,9 @@ static void spt_hpd_irq_setup(struct drm_i915_private *dev_priv)
> ibx_display_interrupt_update(dev_priv, hotplug_irqs, enabled_irqs);
>
> spt_hpd_detection_setup(dev_priv);
> +
> + if (INTEL_PCH_TYPE(dev_priv) >= PCH_ICP)
> + icp_hpd_irq_setup(dev_priv);
> }
>
> static u32 ilk_hotplug_enables(struct drm_i915_private *i915,
> @@ -3729,9 +3744,19 @@ static void gen8_de_irq_postinstall(struct drm_i915_private *dev_priv)
> }
> }
>
> +static void icp_irq_postinstall(struct drm_i915_private *dev_priv)
> +{
> + struct intel_uncore *uncore = &dev_priv->uncore;
> + u32 mask = SDE_GMBUS_ICP;
> +
> + GEN3_IRQ_INIT(uncore, SDE, ~mask, 0xffffffff);
> +}
> +
> static void gen8_irq_postinstall(struct drm_i915_private *dev_priv)
> {
> - if (HAS_PCH_SPLIT(dev_priv))
> + if (INTEL_PCH_TYPE(dev_priv) >= PCH_ICP)
> + icp_irq_postinstall(dev_priv);
> + else if (HAS_PCH_SPLIT(dev_priv))
> ibx_irq_postinstall(dev_priv);
>
> gen8_gt_irq_postinstall(&dev_priv->gt);
> @@ -3740,13 +3765,6 @@ static void gen8_irq_postinstall(struct drm_i915_private *dev_priv)
> gen8_master_intr_enable(dev_priv->uncore.regs);
> }
>
> -static void icp_irq_postinstall(struct drm_i915_private *dev_priv)
> -{
> - struct intel_uncore *uncore = &dev_priv->uncore;
> - u32 mask = SDE_GMBUS_ICP;
> -
> - GEN3_IRQ_INIT(uncore, SDE, ~mask, 0xffffffff);
> -}
>
> static void gen11_irq_postinstall(struct drm_i915_private *dev_priv)
> {
> --
> 2.30.0
>
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> Intel-gfx@xxxxxxxxxxxxxxxxxxxxx
> https://lists.freedesktop.org/mailman/listinfo/intel-gfx
--
Ville Syrjälä
Intel
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