[Intel-gfx] [PATCH] drm/i915/dg1: Update DMC_DEBUG3 register

[Srivatsa, Anusha]

> -----Original Message-----
> From: Roper, Matthew D <matthew.d.roper at intel.com>
> Sent: Thursday, February 10, 2022 10:51 AM
> To: Srivatsa, Anusha <anusha.srivatsa at intel.com>
> Cc: intel-gfx at lists.freedesktop.org
> Subject: Re: [Intel-gfx] [PATCH] drm/i915/dg1: Update DMC_DEBUG3 register
> 
> On Thu, Feb 10, 2022 at 08:44:30AM -0800, Anusha Srivatsa wrote:
> > DMC_DEBUGU3 changes from DG1+
> 
> This looks to be the same thing as the patch that Chuansheng Liu sent:
> 
> https://patchwork.freedesktop.org/patch/473272/?series=99942&rev=1

Yes it is :-/ He sent the patch before mine. So this is void now.

Anusha
> 
> Matt
> 
> >
> > Bspec: 49788
> > Signed-off-by: Anusha Srivatsa <anusha.srivatsa at intel.com>
> > ---
> >  drivers/gpu/drm/i915/display/intel_display_debugfs.c | 6 ++++--
> >  drivers/gpu/drm/i915/i915_reg.h                      | 1 +
> >  2 files changed, 5 insertions(+), 2 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/i915/display/intel_display_debugfs.c
> > b/drivers/gpu/drm/i915/display/intel_display_debugfs.c
> > index f4de004d470f..87fc4b9b7b93 100644
> > --- a/drivers/gpu/drm/i915/display/intel_display_debugfs.c
> > +++ b/drivers/gpu/drm/i915/display/intel_display_debugfs.c
> > @@ -474,8 +474,10 @@ static int i915_dmc_info(struct seq_file *m, void
> *unused)
> >  		 * reg for DC3CO debugging and validation,
> >  		 * but TGL DMC f/w is using DMC_DEBUG3 reg for DC3CO
> counter.
> >  		 */
> > -		seq_printf(m, "DC3CO count: %d\n",
> > -			   intel_de_read(dev_priv, DMC_DEBUG3));
> > +		if (IS_DGFX(dev_priv))
> > +			seq_printf(m, "DC3CO count: %d\n",
> intel_de_read(dev_priv, DG1_DMC_DEBUG3));
> > +		else
> > +			seq_printf(m, "DC3CO count: %d\n",
> intel_de_read(dev_priv,
> > +DMC_DEBUG3));
> >  	} else {
> >  		dc5_reg = IS_BROXTON(dev_priv) ?
> BXT_DMC_DC3_DC5_COUNT :
> >  						 SKL_DMC_DC3_DC5_COUNT;
> > diff --git a/drivers/gpu/drm/i915/i915_reg.h
> > b/drivers/gpu/drm/i915/i915_reg.h index 87c92314ee26..802962e3977c
> > 100644
> > --- a/drivers/gpu/drm/i915/i915_reg.h
> > +++ b/drivers/gpu/drm/i915/i915_reg.h
> > @@ -5633,6 +5633,7 @@
> >  #define DG1_DMC_DEBUG_DC5_COUNT	_MMIO(0x134154)
> >
> >  #define DMC_DEBUG3		_MMIO(0x101090)
> > +#define DG1_DMC_DEBUG3		_MMIO(0x13415C)
> >
> >  /* Display Internal Timeout Register */
> >  #define RM_TIMEOUT		_MMIO(0x42060)
> > --
> > 2.25.1
> >
> 
> --
> Matt Roper
> Graphics Software Engineer
> VTT-OSGC Platform Enablement
> Intel Corporation
> (916) 356-2795