On Tue, Sep 10, 2019 at 07:34:31AM +0000, Mun, Gwan-gyeong wrote: > On Sat, 2019-09-07 at 21:43 -0400, Ilia Mirkin wrote: > > On Sat, Sep 7, 2019 at 7:20 PM Mun, Gwan-gyeong > > <gwan-gyeong.mun@xxxxxxxxx> wrote: > > > On Fri, 2019-09-06 at 09:24 -0400, Ilia Mirkin wrote: > > > > On Fri, Sep 6, 2019 at 7:43 AM Ville Syrjälä > > > > <ville.syrjala@xxxxxxxxxxxxxxx> wrote: > > > > > On Fri, Sep 06, 2019 at 11:31:55AM +0000, Shankar, Uma wrote: > > > > > > > -----Original Message----- > > > > > > > From: Ilia Mirkin <imirkin@xxxxxxxxxxxx> > > > > > > > Sent: Tuesday, September 3, 2019 6:12 PM > > > > > > > To: Mun, Gwan-gyeong <gwan-gyeong.mun@xxxxxxxxx> > > > > > > > Cc: Intel Graphics Development < > > > > > > > intel-gfx@xxxxxxxxxxxxxxxxxxxxx > > > > > > > > ; Shankar, Uma > > > > > > > <uma.shankar@xxxxxxxxx>; dri-devel < > > > > > > > dri-devel@xxxxxxxxxxxxxxxxxxxxx> > > > > > > > Subject: Re: [PATCH v4 3/7] drm: Add DisplayPort colorspace > > > > > > > property > > > > > > > > > > > > > > So how would this work with a DP++ connector? Should it > > > > > > > list > > > > > > > the HDMI or DP > > > > > > > properties? Or do we need a custom property checker which > > > > > > > is > > > > > > > aware of what is > > > > > > > currently plugged in to validate the values? > > > > > > > > > > > > AFAIU For DP++ cases, we detect what kind of sink its driving > > > > > > DP > > > > > > or HDMI (with a passive dongle). > > > > > > Based on the type of sink detected, we should expose DP or > > > > > > HDMI > > > > > > colorspaces to userspace. > > > > > > > > > > For i915 DP connector always drives DP mode, HDMI connector > > > > > always > > > > > drives > > > > > HDMI mode, even when the physical connector is DP++. > > > > > > > > Right, i915 creates 2 connectors, while nouveau, radeon, and > > > > amdgpu > > > > create 1 connector (not sure about other drivers) for a single > > > > physical DP++ socket. Since we supply the list of valid values at > > > > the > > > > time of creating the connector, we can't know at that point > > > > whether > > > > in > > > > the future a HDMI or DP will be plugged into it. > > > > > > > > -ilia > > > Ilia, does it mean that the drm_connector type is > > > DRM_MODE_CONNECTOR_DisplayPort and protocol is DP++ mode? > > > > That is correct. The connector type is "DisplayPort" in such a case. > > > > Cheers, > > > > -ilia > > For now drm_mode_create_colorspace_property() is only used for i915. > IMHO, when other drivers ( nouveau, radeon, and amdgpu ) are ready for > using of drm_mode_create_colorspace_property(), > what about do we add a variable which can identify DP++ and DP to > drm_connector? > And when the drivers (nouveau, radeon, and amdgpu) detect the current > protocol, the drivers will set the variable. IMO better to just have two functions in that case: one for DP, another for HDMI. -- Ville Syrjälä Intel _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel
