cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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cec-ioc-adap-g-conn-info.rst (2498B)

      1.. SPDX-License-Identifier: GPL-2.0
      2..
      3.. Copyright 2019 Google LLC
      4..
      5.. c:namespace:: CEC
      6
      7.. _CEC_ADAP_G_CONNECTOR_INFO:
      8
      9*******************************
     10ioctl CEC_ADAP_G_CONNECTOR_INFO
     11*******************************
     12
     13Name
     14====
     15
     16CEC_ADAP_G_CONNECTOR_INFO - Query HDMI connector information
     17
     18Synopsis
     19========
     20
     21.. c:macro:: CEC_ADAP_G_CONNECTOR_INFO
     22
     23``int ioctl(int fd, CEC_ADAP_G_CONNECTOR_INFO, struct cec_connector_info *argp)``
     24
     25Arguments
     26=========
     27
     28``fd``
     29    File descriptor returned by :c:func:`open()`.
     30
     31``argp``
     32
     33Description
     34===========
     35
     36Using this ioctl an application can learn which HDMI connector this CEC
     37device corresponds to. While calling this ioctl the application should
     38provide a pointer to a cec_connector_info struct which will be populated
     39by the kernel with the info provided by the adapter's driver. This ioctl
     40is only available if the ``CEC_CAP_CONNECTOR_INFO`` capability is set.
     41
     42.. tabularcolumns:: |p{1.0cm}|p{4.4cm}|p{2.5cm}|p{9.2cm}|
     43
     44.. c:type:: cec_connector_info
     45
     46.. flat-table:: struct cec_connector_info
     47    :header-rows:  0
     48    :stub-columns: 0
     49    :widths:       1 1 8
     50
     51    * - __u32
     52      - ``type``
     53      - The type of connector this adapter is associated with.
     54    * - union {
     55      - ``(anonymous)``
     56    * - ``struct cec_drm_connector_info``
     57      - drm
     58      - :ref:`cec-drm-connector-info`
     59    * - }
     60      -
     61
     62.. tabularcolumns:: |p{4.4cm}|p{2.5cm}|p{10.4cm}|
     63
     64.. _connector-type:
     65
     66.. flat-table:: Connector types
     67    :header-rows:  0
     68    :stub-columns: 0
     69    :widths:       3 1 8
     70
     71    * .. _`CEC-CONNECTOR-TYPE-NO-CONNECTOR`:
     72
     73      - ``CEC_CONNECTOR_TYPE_NO_CONNECTOR``
     74      - 0
     75      - No connector is associated with the adapter/the information is not
     76        provided by the driver.
     77    * .. _`CEC-CONNECTOR-TYPE-DRM`:
     78
     79      - ``CEC_CONNECTOR_TYPE_DRM``
     80      - 1
     81      - Indicates that a DRM connector is associated with this adapter.
     82        Information about the connector can be found in
     83	:ref:`cec-drm-connector-info`.
     84
     85.. tabularcolumns:: |p{4.4cm}|p{2.5cm}|p{10.4cm}|
     86
     87.. c:type:: cec_drm_connector_info
     88
     89.. _cec-drm-connector-info:
     90
     91.. flat-table:: struct cec_drm_connector_info
     92    :header-rows:  0
     93    :stub-columns: 0
     94    :widths:       3 1 8
     95
     96    * .. _`CEC-DRM-CONNECTOR-TYPE-CARD-NO`:
     97
     98      - __u32
     99      - ``card_no``
    100      - DRM card number: the number from a card's path, e.g. 0 in case of
    101        /dev/card0.
    102    * .. _`CEC-DRM-CONNECTOR-TYPE-CONNECTOR_ID`:
    103
    104      - __u32
    105      - ``connector_id``
    106      - DRM connector ID.