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11 Jun 2020 08:46:51 -0700 Received: by stinkbox (sSMTP sendmail emulation); Thu, 11 Jun 2020 18:46:50 +0300 Date: Thu, 11 Jun 2020 18:46:50 +0300 From: Ville =?iso-8859-1?Q?Syrj=E4l=E4?= To: Uma Shankar Message-ID: <20200611154650.GB6112@intel.com> References: <20200610191232.11620-1-uma.shankar@intel.com> <20200610191232.11620-7-uma.shankar@intel.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20200610191232.11620-7-uma.shankar@intel.com> X-Patchwork-Hint: comment User-Agent: Mutt/1.10.1 (2018-07-13) Subject: Re: [Intel-gfx] [v3 6/8] drm/i915/display: Implement infoframes readback for LSPCON X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: intel-gfx@lists.freedesktop.org Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" On Thu, Jun 11, 2020 at 12:42:30AM +0530, Uma Shankar wrote: > Implemented Infoframes enabled readback for LSPCON devices. > This will help align the implementation with state readback > infrastructure. > = > Signed-off-by: Uma Shankar > --- > drivers/gpu/drm/i915/display/intel_lspcon.c | 63 ++++++++++++++++++++- > 1 file changed, 61 insertions(+), 2 deletions(-) > = > diff --git a/drivers/gpu/drm/i915/display/intel_lspcon.c b/drivers/gpu/dr= m/i915/display/intel_lspcon.c > index 9034ce6f20b9..0ebe9a700291 100644 > --- a/drivers/gpu/drm/i915/display/intel_lspcon.c > +++ b/drivers/gpu/drm/i915/display/intel_lspcon.c > @@ -576,11 +576,70 @@ void lspcon_set_infoframes(struct intel_encoder *en= coder, > buf, ret); > } > = > +static bool _lspcon_read_avi_infoframe_enabled_mca(struct drm_dp_aux *au= x) > +{ > + int ret; > + u32 val =3D 0; > + u16 reg =3D LSPCON_MCA_AVI_IF_CTRL; > + > + ret =3D drm_dp_dpcd_read(aux, reg, &val, 1); > + if (ret < 0) { > + DRM_ERROR("DPCD read failed, address 0x%x\n", reg); > + return false; > + } > + > + if (val & LSPCON_MCA_AVI_IF_KICKOFF) > + return true; > + > + return false; return val & ...; > +} > + > +static bool _lspcon_read_avi_infoframe_enabled_parade(struct drm_dp_aux = *aux) > +{ > + int ret; > + u32 val =3D 0; > + u16 reg =3D LSPCON_PARADE_AVI_IF_CTRL; > + > + ret =3D drm_dp_dpcd_read(aux, reg, &val, 1); > + if (ret < 0) { > + DRM_ERROR("DPCD read failed, address 0x%x\n", reg); > + return false; > + } > + > + if (val & LSPCON_PARADE_AVI_IF_KICKOFF) > + return true; > + > + return false; > +} > + > u32 lspcon_infoframes_enabled(struct intel_encoder *encoder, > const struct intel_crtc_state *pipe_config) > { > - /* FIXME actually read this from the hw */ > - return 0; > + struct intel_dp *intel_dp =3D enc_to_intel_dp(encoder); > + struct intel_lspcon *lspcon =3D enc_to_intel_lspcon(encoder); > + struct drm_i915_private *dev_priv =3D to_i915(encoder->base.dev); > + bool infoframes_enabled; > + u32 mask =3D 0; > + u32 val; > + > + if (lspcon->vendor =3D=3D LSPCON_VENDOR_MCA) > + infoframes_enabled =3D _lspcon_read_avi_infoframe_enabled_mca(&intel_d= p->aux); > + else > + infoframes_enabled =3D _lspcon_read_avi_infoframe_enabled_parade(&inte= l_dp->aux); > + > + if (infoframes_enabled) > + return true; This is supposed to return a bitmask of all enabled infoframes. Also my question "how do we turn off infoframes once enabled?" from https://patchwork.freedesktop.org/patch/351719/?series=3D72928&rev=3D1 still remains unanswered... > + > + if (lspcon->hdr_supported) { > + val =3D intel_de_read(dev_priv, > + HSW_TVIDEO_DIP_CTL(pipe_config->cpu_transcoder)); > + mask |=3D VIDEO_DIP_ENABLE_GMP_HSW; > + > + if (val & mask) > + return val & mask; > + } > + > + return false; > } > = > void lspcon_resume(struct intel_lspcon *lspcon) > -- = > 2.22.0 -- = Ville Syrj=E4l=E4 Intel _______________________________________________ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/intel-gfx