Lines Matching +full:device +full:- +full:unique

1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
13 MEDIA_IOC_DEVICE_INFO - Query device information
35 query device information, applications call the ioctl with a pointer to
44 .. flat-table:: struct media_device_info
45     :header-rows:  0
46     :stub-columns: 0
49     *  -  char
50        -  ``driver``\ [16]
51        -  Name of the driver implementing the media API as a NUL-terminated
59     *  -  char
60        -  ``model``\ [32]
61        -  Device model name as a NUL-terminated UTF-8 string. The device
65     *  -  char
66        -  ``serial``\ [40]
67        -  Serial number as a NUL-terminated ASCII string.
69     *  -  char
70        -  ``bus_info``\ [32]
71        -  Location of the device in the system as a NUL-terminated ASCII
73 	  bus-specific identifier.
75     *  -  __u32
76        -  ``media_version``
77        -  Media API version, formatted with the ``KERNEL_VERSION()`` macro.
79     *  -  __u32
80        -  ``hw_revision``
81        -  Hardware device revision in a driver-specific format.
83     *  -  __u32
84        -  ``driver_version``
85        -  Media device driver version, formatted with the
89     *  -  __u32
90        -  ``reserved``\ [31]
91        -  Reserved for future extensions. Drivers and applications must set
96 number takes precedence when provided and can be assumed to be unique.
98 used instead. The ``bus_info`` field is guaranteed to be unique, but can
99 vary across reboots or device unplug/replug.
104 On success 0 is returned, on error -1 and the ``errno`` variable is set
106 :ref:`Generic Error Codes <gen-errors>` chapter.