Re: [PATCH v5 02/13] media: v4l2-fwnode: add v4l2_fwnode_connector

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On 4/5/19 8:03 AM, Marco Felsch wrote:
> Currently every driver needs to parse the connector endpoints by it self.
> 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)
> 
> 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>
> ---
>  include/media/v4l2-connector.h | 34 ++++++++++++++++++++++++++++++++++
>  include/media/v4l2-fwnode.h    | 33 +++++++++++++++++++++++++++++++++
>  2 files changed, 67 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..967336e38215
> --- /dev/null
> +++ b/include/media/v4l2-connector.h
> @@ -0,0 +1,34 @@
> +/* 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
> +
> +/**
> + * 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_VGA:       analog vga connector
> + * @V4L2_CON_DVI:	analog or digital dvi connector

I would drop VGA and DVI for now. Only add them if they are needed. These
connectors are rarely seen these days.

> + * @V4L2_CON_HDMI:      digital hdmi connetor

connetor -> connector


Regards,

	Hans

> + */
> +enum v4l2_connector_type {
> +	V4L2_CON_UNKNOWN,
> +	V4L2_CON_COMPOSITE,
> +	V4L2_CON_SVIDEO,
> +	V4L2_CON_VGA,
> +	V4L2_CON_DVI,
> +	V4L2_CON_HDMI,
> +};
> +
> +#endif /* V4L2_CONNECTOR_H */
> +
> diff --git a/include/media/v4l2-fwnode.h b/include/media/v4l2-fwnode.h
> index 6c07825e18b9..04344b71656f 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 port the remote endpoint belongs to
> + * @remote_id: identifier of the id the remote endpoint belongs to
> + * @label: connetor label
> + * @type: connector type
> + * @connector: union with connector configuration data struct
> + * @connector.analog: embedded &struct v4l2_fwnode_connector_analog.
> + *                    Used if connector is of type analog.
> + */
> +struct v4l2_fwnode_connector {
> +	/* common fields for all v4l2_fwnode_connectors */
> +	unsigned int remote_port;
> +	unsigned int remote_id;
> +	char label[V4L2_CONNECTOR_MAX_LABEL];
> +	enum v4l2_connector_type type;
> +
> +	/* connector specific fields */
> +	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
> 




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