.. -*- coding: utf-8; mode: rst -*-

.. _CEC_ADAP_G_CAPS:

*********************
ioctl CEC_ADAP_G_CAPS
*********************

Name
====

CEC_ADAP_G_CAPS - Query device capabilities

Synopsis
========

.. c:function:: int ioctl( int fd, CEC_ADAP_G_CAPS, struct cec_caps *argp )
    :name: CEC_ADAP_G_CAPS

Arguments
=========

``fd``
    File descriptor returned by :ref:`open() <cec-func-open>`.

``argp``


Description
===========

All cec devices must support :ref:`ioctl CEC_ADAP_G_CAPS <CEC_ADAP_G_CAPS>`. To query
device information, applications call the ioctl with a pointer to a
struct :c:type:`cec_caps`. The driver fills the structure and
returns the information to the application. The ioctl never fails.

.. tabularcolumns:: |p{1.2cm}|p{2.5cm}|p{13.8cm}|

.. c:type:: cec_caps

.. flat-table:: struct cec_caps
    :header-rows:  0
    :stub-columns: 0
    :widths:       1 1 16

    * - char
      - ``driver[32]``
      - The name of the cec adapter driver.
    * - char
      - ``name[32]``
      - The name of this CEC adapter. The combination ``driver`` and
	``name`` must be unique.
    * - __u32
      - ``capabilities``
      - The capabilities of the CEC adapter, see
	:ref:`cec-capabilities`.
    * - __u32
      - ``version``
      - CEC Framework API version, formatted with the ``KERNEL_VERSION()``
	macro.


.. tabularcolumns:: |p{4.4cm}|p{2.5cm}|p{10.6cm}|

.. _cec-capabilities:

.. flat-table:: CEC Capabilities Flags
    :header-rows:  0
    :stub-columns: 0
    :widths:       3 1 8

    * .. _`CEC-CAP-PHYS-ADDR`:

      - ``CEC_CAP_PHYS_ADDR``
      - 0x00000001
      - Userspace has to configure the physical address by calling
	:ref:`ioctl CEC_ADAP_S_PHYS_ADDR <CEC_ADAP_S_PHYS_ADDR>`. If
	this capability isn't set, then setting the physical address is
	handled by the kernel whenever the EDID is set (for an HDMI
	receiver) or read (for an HDMI transmitter).
    * .. _`CEC-CAP-LOG-ADDRS`:

      - ``CEC_CAP_LOG_ADDRS``
      - 0x00000002
      - Userspace has to configure the logical addresses by calling
	:ref:`ioctl CEC_ADAP_S_LOG_ADDRS <CEC_ADAP_S_LOG_ADDRS>`. If
	this capability isn't set, then the kernel will have configured
	this.
    * .. _`CEC-CAP-TRANSMIT`:

      - ``CEC_CAP_TRANSMIT``
      - 0x00000004
      - Userspace can transmit CEC messages by calling
	:ref:`ioctl CEC_TRANSMIT <CEC_TRANSMIT>`. This implies that
	userspace can be a follower as well, since being able to transmit
	messages is a prerequisite of becoming a follower. If this
	capability isn't set, then the kernel will handle all CEC
	transmits and process all CEC messages it receives.
    * .. _`CEC-CAP-PASSTHROUGH`:

      - ``CEC_CAP_PASSTHROUGH``
      - 0x00000008
      - Userspace can use the passthrough mode by calling
	:ref:`ioctl CEC_S_MODE <CEC_S_MODE>`.
    * .. _`CEC-CAP-RC`:

      - ``CEC_CAP_RC``
      - 0x00000010
      - This adapter supports the remote control protocol.
    * .. _`CEC-CAP-MONITOR-ALL`:

      - ``CEC_CAP_MONITOR_ALL``
      - 0x00000020
      - The CEC hardware can monitor all messages, not just directed and
	broadcast messages.



Return Value
============

On success 0 is returned, on error -1 and the ``errno`` variable is set
appropriately. The generic error codes are described at the
:ref:`Generic Error Codes <gen-errors>` chapter.
/usb/host?h=nds-private-remove&amp;id=f63cf464fc379382a271f94ddef36e8c5a0628eb'>host</a>/<a href='/cgit.cgi/linux/net-next.git/log/drivers/usb/host/xhci-hub.c?h=nds-private-remove&amp;id=f63cf464fc379382a271f94ddef36e8c5a0628eb'>xhci-hub.c</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/cgit.cgi/linux/net-next.git/log/drivers/usb/host/xhci-hub.c?h=nds-private-remove&amp;id=f63cf464fc379382a271f94ddef36e8c5a0628eb&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th><th class='left'>Files</th><th class='left'>Lines</th></tr>
<select name='dt' onchange='this.form.submit();'><option value='0' selected='selected'>unified</option><option value='1'>ssdiff</option><option value='2'>stat only</option></select></td></tr><tr><td/><td class='ctrl'><noscript><input type='submit' value='reload'/></noscript></td></tr></table></form></div><table summary='commit info' class='commit-info'>
<tr><th>author</th><td>Raju Lakkaraju &lt;Raju.Lakkaraju@microsemi.com&gt;</td><td class='right'>2017-02-07 19:10:26 +0530</td></tr>
<tr><th>committer</th><td>David S. Miller &lt;davem@davemloft.net&gt;</td><td class='right'>2017-02-08 13:29:04 -0500</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net/xfrm?id=04d8a0a5f3b6887543850d991a5e37c4ec90e250'>04d8a0a5f3b6887543850d991a5e37c4ec90e250</a> (<a href='/cgit.cgi/linux/net-next.git/patch/net/xfrm?id=04d8a0a5f3b6887543850d991a5e37c4ec90e250'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=04d8a0a5f3b6887543850d991a5e37c4ec90e250'>ee1fafb2122c2b29c7cb19e571bd7229afdbf847</a> /<a href='/cgit.cgi/linux/net-next.git/tree/net/xfrm?id=04d8a0a5f3b6887543850d991a5e37c4ec90e250'>net/xfrm</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net/xfrm?id=ff4cf0e5ce952488074aa7f47734af1794f55fbc'>ff4cf0e5ce952488074aa7f47734af1794f55fbc</a> (<a href='/cgit.cgi/linux/net-next.git/diff/net/xfrm?id=04d8a0a5f3b6887543850d991a5e37c4ec90e250&amp;id2=ff4cf0e5ce952488074aa7f47734af1794f55fbc'>diff</a>)</td></tr></table>
<div class='commit-subject'>net: phy: Add LED mode driver for Microsemi PHYs.</div><div class='commit-msg'>LED Mode:
Microsemi PHY support 2 LEDs (LED[0] and LED[1]) to display different
status information that can be selected by setting LED mode.

LED Mode parameter (vsc8531, led-0-mode) and (vsc8531, led-1-mode) get
from Device Tree.

Signed-off-by: Raju Lakkaraju &lt;Raju.Lakkaraju@microsemi.com&gt;
Signed-off-by: David S. Miller &lt;davem@davemloft.net&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=04d8a0a5f3b6887543850d991a5e37c4ec90e250'>Diffstat</a> (limited to 'net/xfrm')</div><table summary='diffstat' class='diffstat'>