Based on kernel version 5.7.10. Page generated on 2020-07-23 22:17 EST.
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.. SPDX-License-Identifier: GPL-2.0
..
.. Copyright 2019 Google LLC
..
.. _CEC_ADAP_G_CONNECTOR_INFO:
*******************************
ioctl CEC_ADAP_G_CONNECTOR_INFO
*******************************
Name
====
CEC_ADAP_G_CONNECTOR_INFO - Query HDMI connector information
Synopsis
========
.. c:function:: int ioctl( int fd, CEC_ADAP_G_CONNECTOR_INFO, struct cec_connector_info *argp )
:name: CEC_ADAP_G_CONNECTOR_INFO
Arguments
=========
``fd``
File descriptor returned by :c:func:`open() <cec-open>`.
``argp``
Description
===========
Using this ioctl an application can learn which HDMI connector this CEC
device corresponds to. While calling this ioctl the application should
provide a pointer to a cec_connector_info struct which will be populated
by the kernel with the info provided by the adapter's driver. This ioctl
is only available if the ``CEC_CAP_CONNECTOR_INFO`` capability is set.
.. tabularcolumns:: |p{1.0cm}|p{4.4cm}|p{2.5cm}|p{9.6cm}|
.. c:type:: cec_connector_info
.. flat-table:: struct cec_connector_info
:header-rows: 0
:stub-columns: 0
:widths: 1 1 8
* - __u32
- ``type``
- The type of connector this adapter is associated with.
* - union {
- ``(anonymous)``
* - ``struct cec_drm_connector_info``
- drm
- :ref:`cec-drm-connector-info`
* - }
-
.. tabularcolumns:: |p{4.4cm}|p{2.5cm}|p{10.6cm}|
.. _connector-type:
.. flat-table:: Connector types
:header-rows: 0
:stub-columns: 0
:widths: 3 1 8
* .. _`CEC-CONNECTOR-TYPE-NO-CONNECTOR`:
- ``CEC_CONNECTOR_TYPE_NO_CONNECTOR``
- 0
- No connector is associated with the adapter/the information is not
provided by the driver.
* .. _`CEC-CONNECTOR-TYPE-DRM`:
- ``CEC_CONNECTOR_TYPE_DRM``
- 1
- Indicates that a DRM connector is associated with this adapter.
Information about the connector can be found in
:ref:`cec-drm-connector-info`.
.. tabularcolumns:: |p{4.4cm}|p{2.5cm}|p{10.6cm}|
.. c:type:: cec_drm_connector_info
.. _cec-drm-connector-info:
.. flat-table:: struct cec_drm_connector_info
:header-rows: 0
:stub-columns: 0
:widths: 3 1 8
* .. _`CEC-DRM-CONNECTOR-TYPE-CARD-NO`:
- __u32
- ``card_no``
- DRM card number: the number from a card's path, e.g. 0 in case of
/dev/card0.
* .. _`CEC-DRM-CONNECTOR-TYPE-CONNECTOR_ID`:
- __u32
- ``connector_id``
- DRM connector ID.
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