On Thu, 20 Oct 2016 16:56:44 +0530 Archit Taneja <architt@xxxxxxxxxxxxxx> wrote: > > Please show _technically_ how this would work. I want to see code or > > pseudo-code illustrating how a "foreign" DRM encoder could be used with > > either dw-hdmi or tda998x, because right now I can't see any way that > > could work. > > This is something we already do with the adv7511 bridge driver on msm, > rcar and arc (for 4.9) drivers. > > I've shared pseudo code on the kms driver and encoder chip's driver > side. I've also shared a diff that converts the tda998x driver to use > drm_bridge(uncompiled/untested). > > 1) Kms driver side: > > /* > * Create an encoder instance. Depending on the hardware represented > * by the KMS driver, the encoder can ops can either have some > * functionality, or be nops. In the case of tilcdc, the encoder > * funcs would be mostly nops. > */ > drm_encoder_helper_add(&kms_priv->encoder, &kms_encoder_helper_funcs); > drm_encoder_init(kms_pirv->drm, &kms_priv->encoder, &kms_encoder_funcs, > type, NULL); Then, how does this 'kms_priv' know the type of the encoder, this one being tied to the connector type at the end of the bridge chain? -- Ken ar c'hentañ | ** Breizh ha Linux atav! ** Jef | http://moinejf.free.fr/ _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel
