On Mon, Oct 24, 2016 at 08:10:46PM +0300, Jani Nikula wrote:
> On Mon, 24 Oct 2016, Imre Deak <imre.deak@xxxxxxxxx> wrote:
> > This check is open-coded in a few places, so it makes sense to simplify
> > things by having a helper for it similar to the rest of DPCD feature
> > helpers.
> >
> > v2: (Jani)
> > - Move the helper to drm_dp_helper.h.
> > - Split out this change to a separate patch.
> >
> > Cc: Jani Nikula <jani.nikula@xxxxxxxxx>
> > Cc: dri-devel@xxxxxxxxxxxxxxxxxxxxx
> > Signed-off-by: Imre Deak <imre.deak@xxxxxxxxx>
>
> DP 1.4 has changed the name of "branch" devices, but I think this is
> good.
>
> Reviewed-by: Jani Nikula <jani.nikula@xxxxxxxxx>
Applied to drm-misc, thanks.
-Daniel
>
>
> > ---
> > drivers/gpu/drm/i915/intel_dp.c | 11 ++++-------
> > include/drm/drm_dp_helper.h | 6 ++++++
> > 2 files changed, 10 insertions(+), 7 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
> > index f30db8f..3c2293b 100644
> > --- a/drivers/gpu/drm/i915/intel_dp.c
> > +++ b/drivers/gpu/drm/i915/intel_dp.c
> > @@ -1459,8 +1459,7 @@ static void intel_dp_print_hw_revision(struct intel_dp *intel_dp)
> > if ((drm_debug & DRM_UT_KMS) == 0)
> > return;
> >
> > - if (!(intel_dp->dpcd[DP_DOWNSTREAMPORT_PRESENT] &
> > - DP_DWN_STRM_PORT_PRESENT))
> > + if (!drm_dp_is_branch(intel_dp->dpcd))
> > return;
> >
> > len = drm_dp_dpcd_read(&intel_dp->aux, DP_BRANCH_HW_REV, &rev, 1);
> > @@ -1478,8 +1477,7 @@ static void intel_dp_print_sw_revision(struct intel_dp *intel_dp)
> > if ((drm_debug & DRM_UT_KMS) == 0)
> > return;
> >
> > - if (!(intel_dp->dpcd[DP_DOWNSTREAMPORT_PRESENT] &
> > - DP_DWN_STRM_PORT_PRESENT))
> > + if (!drm_dp_is_branch(intel_dp->dpcd))
> > return;
> >
> > len = drm_dp_dpcd_read(&intel_dp->aux, DP_BRANCH_SW_REV, &rev, 2);
> > @@ -3615,8 +3613,7 @@ intel_dp_get_dpcd(struct intel_dp *intel_dp)
> > if (!is_edp(intel_dp) && !intel_dp->sink_count)
> > return false;
> >
> > - if (!(intel_dp->dpcd[DP_DOWNSTREAMPORT_PRESENT] &
> > - DP_DWN_STRM_PORT_PRESENT))
> > + if (!drm_dp_is_branch(intel_dp->dpcd))
> > return true; /* native DP sink */
> >
> > if (intel_dp->dpcd[DP_DPCD_REV] == 0x10)
> > @@ -4134,7 +4131,7 @@ intel_dp_detect_dpcd(struct intel_dp *intel_dp)
> > return connector_status_connected;
> >
> > /* if there's no downstream port, we're done */
> > - if (!(dpcd[DP_DOWNSTREAMPORT_PRESENT] & DP_DWN_STRM_PORT_PRESENT))
> > + if (!drm_dp_is_branch(dpcd))
> > return connector_status_connected;
> >
> > /* If we're HPD-aware, SINK_COUNT changes dynamically */
> > diff --git a/include/drm/drm_dp_helper.h b/include/drm/drm_dp_helper.h
> > index 2a79882..55bbeb0 100644
> > --- a/include/drm/drm_dp_helper.h
> > +++ b/include/drm/drm_dp_helper.h
> > @@ -690,6 +690,12 @@ drm_dp_tps3_supported(const u8 dpcd[DP_RECEIVER_CAP_SIZE])
> > dpcd[DP_MAX_LANE_COUNT] & DP_TPS3_SUPPORTED;
> > }
> >
> > +static inline bool
> > +drm_dp_is_branch(const u8 dpcd[DP_RECEIVER_CAP_SIZE])
> > +{
> > + return dpcd[DP_DOWNSTREAMPORT_PRESENT] & DP_DWN_STRM_PORT_PRESENT;
> > +}
> > +
> > /*
> > * DisplayPort AUX channel
> > */
>
> --
> Jani Nikula, Intel Open Source Technology Center
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> Intel-gfx@xxxxxxxxxxxxxxxxxxxxx
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--
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
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