On Thu, Jul 11, 2019 at 04:47:17PM +0300, Ville Syrjälä wrote:
> On Wed, Jul 10, 2019 at 04:09:21PM -0700, Anusha Srivatsa wrote:
> > DSC engine on ICL supports only 8 and 10 BPC as the input
> > BPC. But DSC engine in TGL supports 8, 10 and 12 BPC.
> > Add 12 BPC support for DSC while calculating compression
> > configuration.
> >
> > Cc: Manasi Navare <[email protected]>
> > Signed-off-by: Anusha Srivatsa <[email protected]>
> > ---
> > drivers/gpu/drm/i915/display/intel_dp.c | 9 +++++++--
> > 1 file changed, 7 insertions(+), 2 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/i915/display/intel_dp.c
> > b/drivers/gpu/drm/i915/display/intel_dp.c
> > index 0bdb7ecc5a81..cd089643c80d 100644
> > --- a/drivers/gpu/drm/i915/display/intel_dp.c
> > +++ b/drivers/gpu/drm/i915/display/intel_dp.c
> > @@ -71,6 +71,7 @@
> > #define DP_DSC_MAX_SMALL_JOINER_RAM_BUFFER 61440
> > #define DP_DSC_MIN_SUPPORTED_BPC 8
> > #define DP_DSC_MAX_SUPPORTED_BPC 10
> > +#define TGL_DP_DSC_MAX_SUPPORTED_BPC 12
>
> These defines aren't doing any good IMO. I'd just nuke them.
So just remove all the #defines and use the values directly?
>
> >
> > /* DP DSC throughput values used for slice count calculations KPixels/s */
> > #define DP_DSC_PEAK_PIXEL_RATE 2720000
> > @@ -1911,8 +1912,12 @@ static int intel_dp_dsc_compute_config(struct
> > intel_dp *intel_dp,
> > if (!intel_dp_supports_dsc(intel_dp, pipe_config))
> > return -EINVAL;
> >
> > - dsc_max_bpc = min_t(u8, DP_DSC_MAX_SUPPORTED_BPC,
> > - conn_state->max_requested_bpc);
> > + if (INTEL_GEN(dev_priv) > 11)
>
> More customarily >= 12
I agree
Manasi
>
> > + dsc_max_bpc = min_t(u8, TGL_DP_DSC_MAX_SUPPORTED_BPC,
> > + conn_state->max_requested_bpc);
> > + else
> > + dsc_max_bpc = min_t(u8, DP_DSC_MAX_SUPPORTED_BPC,
> > + conn_state->max_requested_bpc);
> >
> > pipe_bpp = intel_dp_dsc_compute_bpp(intel_dp, dsc_max_bpc);
> > if (pipe_bpp < DP_DSC_MIN_SUPPORTED_BPC * 3) {
> > --
> > 2.21.0
> >
> > _______________________________________________
> > Intel-gfx mailing list
> > [email protected]
> > https://lists.freedesktop.org/mailman/listinfo/intel-gfx
>
> --
> Ville Syrjälä
> Intel
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