Hi Marco, Thank you for the patch. On Mon, Apr 15, 2019 at 02:44:02PM +0200, Marco Felsch wrote: > Currently every driver needs to parse the connector endpoints by it self. s/it self/itself/ > This is the initial work to make this generic. The generic connector has > some common fields and some connector specific parts. The generic one > includes: > - type > - label > - remote_port (the port where the connector is connected to) > - remote_id (the endpoint where the connector is connected to) This assumes a single connection between a connector and a remote port, and a single port on the connector side. Is this guaranteed ? For the mini-DIN-4 connectors (often used for S-Video) for instance, I recall from the extensive discussions we had in the past that they should be modeled with two pins, one for the Y component and one for C components. The rationale for this is to support systems where such a connector could be used to carry S-Video, but also two composite video signals (usually through an external adapter from 2 RCA female connectors to one S-Video male connector) that would be routed to two separate video decoders (or two different inputs of the same video decoder). Other topologies may be possible too. > The specific fields are within a union, since only one of them can be > available at the time. Since this is the initial support the patch adds > only the analog-connector specific ones. > > Signed-off-by: Marco Felsch <m.felsch@xxxxxxxxxxxxxx> > Reviewed-by: Jacopo Mondi <jacopo@xxxxxxxxxx> > --- > [1] https://patchwork.kernel.org/cover/10794703/ > > v6: > - fix some spelling and style issues > - rm unnecessary comments > - drop vga and dvi connector > > v2-v4: > - nothing since the patch was squashed from series [1] into this > series. > > include/media/v4l2-connector.h | 30 ++++++++++++++++++++++++++++++ > include/media/v4l2-fwnode.h | 33 +++++++++++++++++++++++++++++++++ > 2 files changed, 63 insertions(+) > create mode 100644 include/media/v4l2-connector.h > > diff --git a/include/media/v4l2-connector.h b/include/media/v4l2-connector.h > new file mode 100644 > index 000000000000..3a951c54f50e > --- /dev/null > +++ b/include/media/v4l2-connector.h > @@ -0,0 +1,30 @@ > +/* SPDX-License-Identifier: GPL-2.0-only */ > +/* > + * v4l2-connector.h > + * > + * V4L2 connector types. > + * > + * Copyright 2019 Pengutronix, Marco Felsch <kernel@xxxxxxxxxxxxxx> > + */ > + > +#ifndef V4L2_CONNECTOR_H > +#define V4L2_CONNECTOR_H > + > +#define V4L2_CONNECTOR_MAX_LABEL 41 Hans pointed out this was a weird number. Should you turn the label field into a pointer to make this more generic (with a v4l2_fwnode_connector_cleanup() function then) ? > + > +/** > + * enum v4l2_connector_type - connector type > + * @V4L2_CON_UNKNOWN: unknown connector type, no V4L2 connetor configuration > + * @V4L2_CON_COMPOSITE: analog composite connector > + * @V4L2_CON_SVIDEO: analog svideo connector > + * @V4L2_CON_HDMI: digital hdmi connector > + */ > +enum v4l2_connector_type { > + V4L2_CON_UNKNOWN, > + V4L2_CON_COMPOSITE, > + V4L2_CON_SVIDEO, > + V4L2_CON_HDMI, > +}; > + > +#endif /* V4L2_CONNECTOR_H */ > + > diff --git a/include/media/v4l2-fwnode.h b/include/media/v4l2-fwnode.h > index 6c07825e18b9..f4df1b95c5ef 100644 > --- a/include/media/v4l2-fwnode.h > +++ b/include/media/v4l2-fwnode.h > @@ -22,6 +22,7 @@ > #include <linux/list.h> > #include <linux/types.h> > > +#include <media/v4l2-connector.h> > #include <media/v4l2-mediabus.h> > #include <media/v4l2-subdev.h> > > @@ -126,6 +127,38 @@ struct v4l2_fwnode_link { > unsigned int remote_port; > }; > > +/** > + * struct v4l2_fwnode_connector_analog - analog connector data structure > + * @supported_tvnorms: tv norms this connector supports, set to V4L2_STD_ALL > + * if no restrictions are specified. > + */ > +struct v4l2_fwnode_connector_analog { > + v4l2_std_id supported_tvnorms; > +}; > + > +/** > + * struct v4l2_fwnode_connector - the connector data structure > + * @remote_port: identifier of the remote endpoint port the connector connects > + * to > + * @remote_id: identifier of the remote endpoint the connector connects to > + * @label: connetor label > + * @type: connector type > + * @connector: connector configuration > + * @connector.analog: analog connector configuration > + * &struct v4l2_fwnode_connector_analog > + */ > +struct v4l2_fwnode_connector { > + unsigned int remote_port; > + unsigned int remote_id; > + char label[V4L2_CONNECTOR_MAX_LABEL]; > + enum v4l2_connector_type type; > + > + union { > + struct v4l2_fwnode_connector_analog analog; > + /* future connectors */ > + } connector; > +}; > + > /** > * v4l2_fwnode_endpoint_parse() - parse all fwnode node properties > * @fwnode: pointer to the endpoint's fwnode handle -- Regards, Laurent Pinchart
