Re: [PATCH v2 1/3] drm/i915/bdw+: Move misc display IRQ handling to it own function

["Souza, Jose" <jose.souza@intel.com>]

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On Fri, 2019-04-12 at 15:40 -0700, Rodrigo Vivi wrote:
> On Fri, Apr 12, 2019 at 03:29:07PM -0700, José Roberto de Souza
> wrote:
> > Just moving it to reduce the tabs and avoid break code lines.
> > No behavior changes intended here.
> 
> this function is indeed big and deserves a split.
> I wonder why haven't you moved the entire de_misc block to a
> separated
> function instead only the middle of the handling...
> 
> i mean, including reg read above and error message below.

It was reading and writing GEN8_DE_MISC_IIR inside of
gen8_de_misc_irq_handler() but to keep consistent with the other
handlers Dhinakaran suggested this change.

> 
> > v2:
> > - Reading misc display IRQ outside of gen8_de_misc_irq_handler() as
> > other irq handlers (Dhinakaran)
> > 
> > Cc: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>
> > Signed-off-by: José Roberto de Souza <jose.souza@intel.com>
> > ---
> >  drivers/gpu/drm/i915/i915_irq.c | 45 ++++++++++++++++++-----------
> > ----
> >  1 file changed, 25 insertions(+), 20 deletions(-)
> > 
> > diff --git a/drivers/gpu/drm/i915/i915_irq.c
> > b/drivers/gpu/drm/i915/i915_irq.c
> > index d934545445e1..820d89300454 100644
> > --- a/drivers/gpu/drm/i915/i915_irq.c
> > +++ b/drivers/gpu/drm/i915/i915_irq.c
> > @@ -2740,6 +2740,28 @@ static u32 gen8_de_port_aux_mask(struct
> > drm_i915_private *dev_priv)
> >  	return mask;
> >  }
> >  
> > +static void
> > +gen8_de_misc_irq_handler(struct drm_i915_private *dev_priv, u32
> > iir)
> > +{
> > +	bool found = false;
> > +
> > +	if (iir & GEN8_DE_MISC_GSE) {
> > +		intel_opregion_asle_intr(dev_priv);
> > +		found = true;
> > +	}
> > +
> > +	if (iir & GEN8_DE_EDP_PSR) {
> > +		u32 psr_iir = I915_READ(EDP_PSR_IIR);
> > +
> > +		intel_psr_irq_handler(dev_priv, psr_iir);
> > +		I915_WRITE(EDP_PSR_IIR, psr_iir);
> > +		found = true;
> > +	}
> > +
> > +	if (!found)
> > +		DRM_ERROR("Unexpected DE Misc interrupt\n");
> > +}
> > +
> >  static irqreturn_t
> >  gen8_de_irq_handler(struct drm_i915_private *dev_priv, u32
> > master_ctl)
> >  {
> > @@ -2750,29 +2772,12 @@ gen8_de_irq_handler(struct drm_i915_private
> > *dev_priv, u32 master_ctl)
> >  	if (master_ctl & GEN8_DE_MISC_IRQ) {
> >  		iir = I915_READ(GEN8_DE_MISC_IIR);
> >  		if (iir) {
> > -			bool found = false;
> > -
> >  			I915_WRITE(GEN8_DE_MISC_IIR, iir);
> >  			ret = IRQ_HANDLED;
> > -
> > -			if (iir & GEN8_DE_MISC_GSE) {
> > -				intel_opregion_asle_intr(dev_priv);
> > -				found = true;
> > -			}
> > -
> > -			if (iir & GEN8_DE_EDP_PSR) {
> > -				u32 psr_iir = I915_READ(EDP_PSR_IIR);
> > -
> > -				intel_psr_irq_handler(dev_priv,
> > psr_iir);
> > -				I915_WRITE(EDP_PSR_IIR, psr_iir);
> > -				found = true;
> > -			}
> > -
> > -			if (!found)
> > -				DRM_ERROR("Unexpected DE Misc
> > interrupt\n");
> > -		}
> > -		else
> > +			gen8_de_misc_irq_handler(dev_priv, iir);
> > +		} else {
> >  			DRM_ERROR("The master control interrupt lied
> > (DE MISC)!\n");
> > +		}
> >  	}
> >  
> >  	if (INTEL_GEN(dev_priv) >= 11 && (master_ctl &
> > GEN11_DE_HPD_IRQ)) {
> > -- 
> > 2.21.0
> > 
> > _______________________________________________
> > Intel-gfx mailing list
> > Intel-gfx@lists.freedesktop.org
> > https://lists.freedesktop.org/mailman/listinfo/intel-gfx

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