[Intel-gfx] [PATCH] drm/i915/audio: Fix audio detection issue on GLK

[Rodrigo Vivi]

On Mon, Apr 09, 2018 at 05:07:31PM +0300, Jani Nikula wrote:
> On Sun, 08 Apr 2018, Gaurav K Singh <gaurav.k.singh at intel.com> wrote:
> > On Geminilake, sometimes audio card is not getting
> > detected after reboot. This is a spurious issue happening on
> > Geminilake. HW codec and HD audio controller link was going
> > out of sync for which there was a fix in i915 driver but
> > was not getting invoked for GLK. Extending this fix to GLK as well.
> >
> > Tested by Du,Wenkai on GLK board.
> >
> > Signed-off-by: Gaurav K Singh <gaurav.k.singh at intel.com>
> > ---
> >  drivers/gpu/drm/i915/intel_audio.c | 3 ++-
> >  1 file changed, 2 insertions(+), 1 deletion(-)
> >
> > diff --git a/drivers/gpu/drm/i915/intel_audio.c b/drivers/gpu/drm/i915/intel_audio.c
> > index 656f6c931341..73b1e0b96f88 100644
> > --- a/drivers/gpu/drm/i915/intel_audio.c
> > +++ b/drivers/gpu/drm/i915/intel_audio.c
> > @@ -729,7 +729,8 @@ static void i915_audio_component_codec_wake_override(struct device *kdev,
> >  	struct drm_i915_private *dev_priv = kdev_to_i915(kdev);
> >  	u32 tmp;
> >  
> > -	if (!IS_GEN9_BC(dev_priv) && !IS_BROXTON(dev_priv))
> > +	if (!IS_GEN9_BC(dev_priv) && !IS_BROXTON(dev_priv) &&
> > +						!IS_GEMINILAKE(dev_priv))
> 
> That could be written as
> 
> 	if (!IS_GEN9_BC(dev_priv) && !IS_GEN9_LP(dev_priv))
> 
> which in turn could just be written as
> 
> 	if (!IS_GEN9(dev_priv))
> 
> ...but since GLK has gen 10 display, so I'm wondering if the same issue
> will be present in gen 10 too, and whether this should just become
> 
> 	if (INTEL_GEN(dev_priv) < 9)

+1. I opened here to exactly add same comment.

> 
> BR,
> Jani.
> 
> 
> 
> >  		return;
> >  
> >  	i915_audio_component_get_power(kdev);
> 
> -- 
> Jani Nikula, Intel Open Source Technology Center
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