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

[Dhinakaran Pandiyan]

On Mon, 2018-04-09 at 12:18 -0700, Kumar, Abhay wrote:
> 
> On 4/9/2018 12:10 PM, Rodrigo Vivi wrote:
> > 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.
> I am checking with DINQ and without this patch for GLK it can enumerate 
> HDA codec. Ofcourse after cdclk fix.

How about the other way around? i.e., does codec enumeration work this
patch but without the cdclk change?



> >
> >> BR,
> >> Jani.
> >>
> >>
> >>
> >>>   		return;
> >>>   
> >>>   	i915_audio_component_get_power(kdev);
> >> -- 
> >> Jani Nikula, Intel Open Source Technology Center
> >> _______________________________________________
> >> Intel-gfx mailing list
> >> Intel-gfx at lists.freedesktop.org
> >> https://lists.freedesktop.org/mailman/listinfo/intel-gfx
> > _______________________________________________
> > Intel-gfx mailing list
> > Intel-gfx at lists.freedesktop.org
> > https://lists.freedesktop.org/mailman/listinfo/intel-gfx
> 
> _______________________________________________
> Intel-gfx mailing list
> Intel-gfx at lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/intel-gfx