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Oleg Vasilev

2019-Aug-26 13:22 UTC

[Nouveau] [PATCH v3 5/7] drm/nouveau: utilize subconnector property for DP

Since DP-specific information is stored in driver's structures, every
driver needs to implement subconnector property by itself.

Reviewed-by: Emil Velikov <emil.velikov at collabora.com>
Signed-off-by: Oleg Vasilev <oleg.vasilev at intel.com>
Cc: Ben Skeggs <bskeggs at redhat.com>
Cc: nouveau at lists.freedesktop.org
---
 drivers/gpu/drm/nouveau/nouveau_connector.c | 13 +++++++++++++
 drivers/gpu/drm/nouveau/nouveau_dp.c        |  9 +++++++++
 drivers/gpu/drm/nouveau/nouveau_encoder.h   |  1 +
 3 files changed, 23 insertions(+)

diff --git a/drivers/gpu/drm/nouveau/nouveau_connector.c
b/drivers/gpu/drm/nouveau/nouveau_connector.c
index 94dfa2e5a9ab..d9c116cc11b9 100644
--- a/drivers/gpu/drm/nouveau/nouveau_connector.c
+++ b/drivers/gpu/drm/nouveau/nouveau_connector.c
@@ -635,6 +635,17 @@ nouveau_connector_detect(struct drm_connector *connector,
bool force)
 	pm_runtime_mark_last_busy(dev->dev);
 	pm_runtime_put_autosuspend(dev->dev);
 
+	if (connector->connector_type == DRM_MODE_CONNECTOR_DisplayPort ||
+	    connector->connector_type == DRM_MODE_CONNECTOR_eDP) {
+		enum drm_mode_subconnector subconnector = DRM_MODE_SUBCONNECTOR_Unknown;
+
+		if (conn_status == connector_status_connected && nv_encoder)
+			subconnector = nv_encoder->dp.subconnector;
+		drm_object_property_set_value(&connector->base,
+			connector->dev->mode_config.dp_subconnector_property,
+			subconnector);
+	}
+
 	return conn_status;
 }
 
@@ -1359,6 +1370,8 @@ nouveau_connector_create(struct drm_device *dev,
 			kfree(nv_connector);
 			return ERR_PTR(ret);
 		}
+
+		drm_mode_add_dp_subconnector_property(connector);
 		funcs = &nouveau_connector_funcs;
 		break;
 	default:
diff --git a/drivers/gpu/drm/nouveau/nouveau_dp.c
b/drivers/gpu/drm/nouveau/nouveau_dp.c
index 2674f1587457..85eac853e3f8 100644
--- a/drivers/gpu/drm/nouveau/nouveau_dp.c
+++ b/drivers/gpu/drm/nouveau/nouveau_dp.c
@@ -62,6 +62,7 @@ nouveau_dp_detect(struct nouveau_encoder *nv_encoder)
 	struct nouveau_drm *drm = nouveau_drm(dev);
 	struct nvkm_i2c_aux *aux;
 	u8 dpcd[8];
+	u8 port_cap[DP_MAX_DOWNSTREAM_PORTS] = {};
 	int ret;
 
 	aux = nv_encoder->aux;
@@ -72,6 +73,14 @@ nouveau_dp_detect(struct nouveau_encoder *nv_encoder)
 	if (ret)
 		return ret;
 
+	if (dpcd[DP_DPCD_REV] > 0x10) {
+		ret = nvkm_rdaux(aux, DP_DOWNSTREAM_PORT_0,
+				 port_cap, DP_MAX_DOWNSTREAM_PORTS);
+		if (ret)
+			memset(port_cap, 0, DP_MAX_DOWNSTREAM_PORTS);
+	}
+	nv_encoder->dp.subconnector = drm_dp_subconnector_type(dpcd, port_cap);
+
 	nv_encoder->dp.link_bw = 27000 * dpcd[1];
 	nv_encoder->dp.link_nr = dpcd[2] & DP_MAX_LANE_COUNT_MASK;
 
diff --git a/drivers/gpu/drm/nouveau/nouveau_encoder.h
b/drivers/gpu/drm/nouveau/nouveau_encoder.h
index 3517f920bf89..e17971a30221 100644
--- a/drivers/gpu/drm/nouveau/nouveau_encoder.h
+++ b/drivers/gpu/drm/nouveau/nouveau_encoder.h
@@ -63,6 +63,7 @@ struct nouveau_encoder {
 			struct nv50_mstm *mstm;
 			int link_nr;
 			int link_bw;
+			enum drm_mode_subconnector subconnector;
 		} dp;
 	};
 
-- 
2.23.0

Ilia Mirkin

2019-Aug-26 13:36 UTC

head link

[Nouveau] [PATCH v3 5/7] drm/nouveau: utilize subconnector property for DP

This should probably be fixed to account for the scenario where an
HDMI connector is plugged directly into the DP++ port. I don't think
the dp.subconnector property will be valid in that case.
(Unfortunately I don't remember how one detects that particular
situation.)

On Mon, Aug 26, 2019 at 9:22 AM Oleg Vasilev <oleg.vasilev at intel.com>
wrote:>
> Since DP-specific information is stored in driver's structures, every
> driver needs to implement subconnector property by itself.
>
> Reviewed-by: Emil Velikov <emil.velikov at collabora.com>
> Signed-off-by: Oleg Vasilev <oleg.vasilev at intel.com>
> Cc: Ben Skeggs <bskeggs at redhat.com>
> Cc: nouveau at lists.freedesktop.org
> ---
>  drivers/gpu/drm/nouveau/nouveau_connector.c | 13 +++++++++++++
>  drivers/gpu/drm/nouveau/nouveau_dp.c        |  9 +++++++++
>  drivers/gpu/drm/nouveau/nouveau_encoder.h   |  1 +
>  3 files changed, 23 insertions(+)
>
> diff --git a/drivers/gpu/drm/nouveau/nouveau_connector.c
b/drivers/gpu/drm/nouveau/nouveau_connector.c
> index 94dfa2e5a9ab..d9c116cc11b9 100644
> --- a/drivers/gpu/drm/nouveau/nouveau_connector.c
> +++ b/drivers/gpu/drm/nouveau/nouveau_connector.c
> @@ -635,6 +635,17 @@ nouveau_connector_detect(struct drm_connector
*connector, bool force)
>         pm_runtime_mark_last_busy(dev->dev);
>         pm_runtime_put_autosuspend(dev->dev);
>
> +       if (connector->connector_type == DRM_MODE_CONNECTOR_DisplayPort
||
> +           connector->connector_type == DRM_MODE_CONNECTOR_eDP) {
> +               enum drm_mode_subconnector subconnector =
DRM_MODE_SUBCONNECTOR_Unknown;
> +
> +               if (conn_status == connector_status_connected &&
nv_encoder)
> +                       subconnector = nv_encoder->dp.subconnector;
> +               drm_object_property_set_value(&connector->base,
> +                      
connector->dev->mode_config.dp_subconnector_property,
> +                       subconnector);
> +       }
> +
>         return conn_status;
>  }
>
> @@ -1359,6 +1370,8 @@ nouveau_connector_create(struct drm_device *dev,
>                         kfree(nv_connector);
>                         return ERR_PTR(ret);
>                 }
> +
> +               drm_mode_add_dp_subconnector_property(connector);
>                 funcs = &nouveau_connector_funcs;
>                 break;
>         default:
> diff --git a/drivers/gpu/drm/nouveau/nouveau_dp.c
b/drivers/gpu/drm/nouveau/nouveau_dp.c
> index 2674f1587457..85eac853e3f8 100644
> --- a/drivers/gpu/drm/nouveau/nouveau_dp.c
> +++ b/drivers/gpu/drm/nouveau/nouveau_dp.c
> @@ -62,6 +62,7 @@ nouveau_dp_detect(struct nouveau_encoder *nv_encoder)
>         struct nouveau_drm *drm = nouveau_drm(dev);
>         struct nvkm_i2c_aux *aux;
>         u8 dpcd[8];
> +       u8 port_cap[DP_MAX_DOWNSTREAM_PORTS] = {};
>         int ret;
>
>         aux = nv_encoder->aux;
> @@ -72,6 +73,14 @@ nouveau_dp_detect(struct nouveau_encoder *nv_encoder)
>         if (ret)
>                 return ret;
>
> +       if (dpcd[DP_DPCD_REV] > 0x10) {
> +               ret = nvkm_rdaux(aux, DP_DOWNSTREAM_PORT_0,
> +                                port_cap, DP_MAX_DOWNSTREAM_PORTS);
> +               if (ret)
> +                       memset(port_cap, 0, DP_MAX_DOWNSTREAM_PORTS);
> +       }
> +       nv_encoder->dp.subconnector = drm_dp_subconnector_type(dpcd,
port_cap);
> +
>         nv_encoder->dp.link_bw = 27000 * dpcd[1];
>         nv_encoder->dp.link_nr = dpcd[2] & DP_MAX_LANE_COUNT_MASK;
>
> diff --git a/drivers/gpu/drm/nouveau/nouveau_encoder.h
b/drivers/gpu/drm/nouveau/nouveau_encoder.h
> index 3517f920bf89..e17971a30221 100644
> --- a/drivers/gpu/drm/nouveau/nouveau_encoder.h
> +++ b/drivers/gpu/drm/nouveau/nouveau_encoder.h
> @@ -63,6 +63,7 @@ struct nouveau_encoder {
>                         struct nv50_mstm *mstm;
>                         int link_nr;
>                         int link_bw;
> +                       enum drm_mode_subconnector subconnector;
>                 } dp;
>         };
>
> --
> 2.23.0
>
> _______________________________________________
> Nouveau mailing list
> Nouveau at lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/nouveau

Ville Syrjälä

2019-Aug-28 14:38 UTC

head link

[Nouveau] [PATCH v3 5/7] drm/nouveau: utilize subconnector property for DP

On Mon, Aug 26, 2019 at 09:36:50AM -0400, Ilia Mirkin
wrote:> This should probably be fixed to account for the scenario where an
> HDMI connector is plugged directly into the DP++ port. I don't think
> the dp.subconnector property will be valid in that case.
> (Unfortunately I don't remember how one detects that particular
> situation.)
One may or may not be able to detect it very well. I've seen dongles
that automagically change the DFP type from DP++ to DP/HDMI depending
on what's plugged in, and I've also seen dongles that leave the DFP
type to DP++.

I'm actually broiling a series of patches which try to improve how
i915 handles various DFP types, and for that I'm thinking of using
a combination of the DFP type and the EDID digital input type to
differentiate between the two cases like so:

static bool is_edid_digital_input_dp(const struct edid *edid)
{
	return edid && edid->revision >= 4 &&
		edid->input & DRM_EDID_INPUT_DIGITAL &&
		(edid->input & DRM_EDID_DIGITAL_TYPE_MASK) == DRM_EDID_DIGITAL_TYPE_DP;
}

{
	switch (port_cap[0] & DP_DS_PORT_TYPE_MASK) {
	case DP_DS_PORT_TYPE_DP:
		DP_STUFF;
	case DP_DS_PORT_TYPE_DP_DUALMODE:
		if (is_edid_digital_input_dp(edid))
			DP_STUFF;
		/* fall through */
	case DP_DS_PORT_TYPE_HDMI:
	case DP_DS_PORT_TYPE_DVI:
		TMDS_STUFF;
}
> 
> On Mon, Aug 26, 2019 at 9:22 AM Oleg Vasilev <oleg.vasilev at
intel.com> wrote:
> >
> > Since DP-specific information is stored in driver's structures,
every
> > driver needs to implement subconnector property by itself.
> >
> > Reviewed-by: Emil Velikov <emil.velikov at collabora.com>
> > Signed-off-by: Oleg Vasilev <oleg.vasilev at intel.com>
> > Cc: Ben Skeggs <bskeggs at redhat.com>
> > Cc: nouveau at lists.freedesktop.org
> > ---
> >  drivers/gpu/drm/nouveau/nouveau_connector.c | 13 +++++++++++++
> >  drivers/gpu/drm/nouveau/nouveau_dp.c        |  9 +++++++++
> >  drivers/gpu/drm/nouveau/nouveau_encoder.h   |  1 +
> >  3 files changed, 23 insertions(+)
> >
> > diff --git a/drivers/gpu/drm/nouveau/nouveau_connector.c
b/drivers/gpu/drm/nouveau/nouveau_connector.c
> > index 94dfa2e5a9ab..d9c116cc11b9 100644
> > --- a/drivers/gpu/drm/nouveau/nouveau_connector.c
> > +++ b/drivers/gpu/drm/nouveau/nouveau_connector.c
> > @@ -635,6 +635,17 @@ nouveau_connector_detect(struct drm_connector
*connector, bool force)
> >         pm_runtime_mark_last_busy(dev->dev);
> >         pm_runtime_put_autosuspend(dev->dev);
> >
> > +       if (connector->connector_type ==
DRM_MODE_CONNECTOR_DisplayPort ||
> > +           connector->connector_type == DRM_MODE_CONNECTOR_eDP) {
> > +               enum drm_mode_subconnector subconnector =
DRM_MODE_SUBCONNECTOR_Unknown;
> > +
> > +               if (conn_status == connector_status_connected
&& nv_encoder)
> > +                       subconnector = nv_encoder->dp.subconnector;
> > +               drm_object_property_set_value(&connector->base,
> > +                      
connector->dev->mode_config.dp_subconnector_property,
> > +                       subconnector);
> > +       }
> > +
> >         return conn_status;
> >  }
> >
> > @@ -1359,6 +1370,8 @@ nouveau_connector_create(struct drm_device *dev,
> >                         kfree(nv_connector);
> >                         return ERR_PTR(ret);
> >                 }
> > +
> > +               drm_mode_add_dp_subconnector_property(connector);
> >                 funcs = &nouveau_connector_funcs;
> >                 break;
> >         default:
> > diff --git a/drivers/gpu/drm/nouveau/nouveau_dp.c
b/drivers/gpu/drm/nouveau/nouveau_dp.c
> > index 2674f1587457..85eac853e3f8 100644
> > --- a/drivers/gpu/drm/nouveau/nouveau_dp.c
> > +++ b/drivers/gpu/drm/nouveau/nouveau_dp.c
> > @@ -62,6 +62,7 @@ nouveau_dp_detect(struct nouveau_encoder
*nv_encoder)
> >         struct nouveau_drm *drm = nouveau_drm(dev);
> >         struct nvkm_i2c_aux *aux;
> >         u8 dpcd[8];
> > +       u8 port_cap[DP_MAX_DOWNSTREAM_PORTS] = {};
> >         int ret;
> >
> >         aux = nv_encoder->aux;
> > @@ -72,6 +73,14 @@ nouveau_dp_detect(struct nouveau_encoder
*nv_encoder)
> >         if (ret)
> >                 return ret;
> >
> > +       if (dpcd[DP_DPCD_REV] > 0x10) {
> > +               ret = nvkm_rdaux(aux, DP_DOWNSTREAM_PORT_0,
> > +                                port_cap, DP_MAX_DOWNSTREAM_PORTS);
> > +               if (ret)
> > +                       memset(port_cap, 0, DP_MAX_DOWNSTREAM_PORTS);
> > +       }
> > +       nv_encoder->dp.subconnector =
drm_dp_subconnector_type(dpcd, port_cap);
> > +
> >         nv_encoder->dp.link_bw = 27000 * dpcd[1];
> >         nv_encoder->dp.link_nr = dpcd[2] &
DP_MAX_LANE_COUNT_MASK;
> >
> > diff --git a/drivers/gpu/drm/nouveau/nouveau_encoder.h
b/drivers/gpu/drm/nouveau/nouveau_encoder.h
> > index 3517f920bf89..e17971a30221 100644
> > --- a/drivers/gpu/drm/nouveau/nouveau_encoder.h
> > +++ b/drivers/gpu/drm/nouveau/nouveau_encoder.h
> > @@ -63,6 +63,7 @@ struct nouveau_encoder {
> >                         struct nv50_mstm *mstm;
> >                         int link_nr;
> >                         int link_bw;
> > +                       enum drm_mode_subconnector subconnector;
> >                 } dp;
> >         };
> >
> > --
> > 2.23.0
> >
> > _______________________________________________
> > Nouveau mailing list
> > Nouveau at lists.freedesktop.org
> > https://lists.freedesktop.org/mailman/listinfo/nouveau
> _______________________________________________
> dri-devel mailing list
> dri-devel at lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/dri-devel
-- 
Ville Syrjälä
Intel

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