Searched refs:CEC (Results 1 – 25 of 91) sorted by relevance
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| /linux-6.1.9/drivers/media/cec/platform/ |
| D | Kconfig | 6 tristate "ChromeOS EC CEC driver"
13 ChromeOS Embedded Controller's CEC.
14 The CEC bus is present in the HDMI connector and enables communication
18 tristate "Amlogic Meson AO CEC driver"
23 This is a driver for Amlogic Meson SoCs AO CEC interface. It uses the
24 generic CEC framework interface.
25 CEC bus is present in the HDMI connector and enables communication
28 tristate "Amlogic Meson G12A AO CEC driver"
36 This is a driver for Amlogic Meson G12A SoCs AO CEC interface.
37 This driver if for the new AO-CEC module found in G12A SoCs,
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| /linux-6.1.9/Documentation/userspace-api/media/cec/ |
| D | cec-ioc-adap-g-log-addrs.rst | 2 .. c:namespace:: CEC
40 To query the current CEC logical addresses, applications call
55 values (CEC version 2.0, no vendor ID and an empty OSD name).
62 A :ref:`CEC_EVENT_STATE_CHANGE <CEC-EVENT-STATE-CHANGE>` event is sent when the
94 - The CEC version that this adapter shall use. See
97 Note that :ref:`CEC_OP_CEC_VERSION_1_3A <CEC-OP-CEC-VERSION-1-3A>` is not allowed by the CEC
106 ignored. Note that the CEC 2.0 standard allows for a maximum of 2
110 what was requested. If this field is set to 0, then the CEC
135 to :ref:`CEC_LOG_ADDR_TYPE_UNREGISTERED <CEC-LOG-ADDR-TYPE-UNREGISTERED>`).
138 - CEC 2.0 specific: the bit mask of all device types. See
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| D | cec-ioc-g-mode.rst | 2 .. c:namespace:: CEC
12 CEC_G_MODE, CEC_S_MODE - Get or set exclusive use of the CEC adapter
32 Pointer to CEC mode.
39 obtain exclusive access to the CEC adapter. This ioctl sets the
42 used to initiate messages, i.e. it commands other CEC devices. The
43 follower is the filehandle that receives messages sent to the CEC
47 When a CEC message is received, then the CEC framework will decide how
50 is waiting for it. In addition the CEC framework will process it.
52 If the message is not a reply, then the CEC framework will process it
60 The CEC framework will process core messages unless requested otherwise
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| D | cec-intro.rst | 10 HDMI cable to communicate. The protocol for CEC version 1.4 is defined
11 in supplements 1 (CEC) and 2 (HEAC or HDMI Ethernet and Audio Return
13 extensions added to CEC version 2.0 are defined in chapter 11 of the
21 CEC, need to be handled by the kernel, others can be handled either by
24 In addition, CEC can be implemented in HDMI receivers, transmitters and
26 control just the CEC pin.
28 Drivers that support CEC will create a CEC device node (/dev/cecX) to
29 give userspace access to the CEC adapter. The
34 provides three tools to handle CEC:
36 - cec-ctl: the Swiss army knife of CEC. Allows you to configure, transmit
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| D | cec-ioc-adap-g-caps.rst | 2 .. c:namespace:: CEC
52 - The name of this CEC adapter. The combination ``driver`` and
59 - The capabilities of the CEC adapter, see
63 - CEC Framework API version, formatted with the ``KERNEL_VERSION()``
70 .. flat-table:: CEC Capabilities Flags
75 * .. _`CEC-CAP-PHYS-ADDR`:
84 * .. _`CEC-CAP-LOG-ADDRS`:
92 * .. _`CEC-CAP-TRANSMIT`:
96 - Userspace can transmit CEC messages by calling
100 capability isn't set, then the kernel will handle all CEC
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| D | cec-ioc-dqevent.rst | 2 .. c:namespace:: CEC
13 CEC_DQEVENT - Dequeue a CEC event
33 CEC devices can send asynchronous events. These can be retrieved by
43 two :ref:`CEC_EVENT_STATE_CHANGE <CEC-EVENT-STATE-CHANGE>` events with
93 replied to within a second according to the CEC specification,
114 - The CEC event type, see :ref:`cec-events`.
122 - The new adapter state as sent by the :ref:`CEC_EVENT_STATE_CHANGE <CEC-EVENT-STATE-CHANGE>`
126 - The number of lost messages as sent by the :ref:`CEC_EVENT_LOST_MSGS <CEC-EVENT-LOST-MSGS>`
135 .. flat-table:: CEC Events Types
140 * .. _`CEC-EVENT-STATE-CHANGE`:
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| D | cec-pin-error-inj.rst | 3 CEC Pin Framework Error Injection
6 The CEC Pin Framework is a core CEC framework for CEC hardware that only
7 has low-level support for the CEC bus. Most hardware today will have
8 high-level CEC support where the hardware deals with driving the CEC bus,
10 allows you to connect the CEC pin to a GPIO on e.g. a Raspberry Pi and
11 you have now made a CEC adapter.
15 test how well CEC adapters can handle error conditions.
17 Currently only the cec-gpio driver (when the CEC line is directly
45 # <op>[,<mode>] rx-add-byte add a spurious byte to the received CEC message
46 # <op>[,<mode>] rx-remove-byte remove the last byte from the received CEC message
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| D | cec-ioc-receive.rst | 2 .. c:namespace:: CEC
14 CEC_RECEIVE, CEC_TRANSMIT - Receive or transmit a CEC message
39 To receive a CEC message the application has to fill in the
50 1. a message received from another CEC device (the ``sequence`` field will
58 To send a CEC message the application has to fill in the struct
64 of 2-byte messages). Note that the CEC kernel framework will also reply
79 However, the CEC specification allows sending messages from 'Unregistered' to
85 physical address, but the cable is still connected and CEC still works.
126 - A non-zero sequence number is automatically assigned by the CEC framework
127 for all transmitted messages. It is used by the CEC framework when it queues
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| D | cec-ioc-adap-g-conn-info.rst | 5 .. c:namespace:: CEC
36 Using this ioctl an application can learn which HDMI connector this CEC
71 * .. _`CEC-CONNECTOR-TYPE-NO-CONNECTOR`:
77 * .. _`CEC-CONNECTOR-TYPE-DRM`:
96 * .. _`CEC-DRM-CONNECTOR-TYPE-CARD-NO`:
102 * .. _`CEC-DRM-CONNECTOR-TYPE-CONNECTOR_ID`:
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| /linux-6.1.9/drivers/media/cec/ |
| D | Kconfig | 11 menu "CEC support"
14 bool "HDMI CEC RC integration"
18 Pass on CEC remote control messages to the RC framework.
21 bool "Enable CEC error injection support"
24 This option enables CEC error injection using debugfs.
28 prompt "HDMI CEC drivers"
31 Enable support for HDMI CEC (Consumer Electronics Control),
34 Say Y when you have an HDMI receiver, transmitter or a USB CEC
35 adapter that supports HDMI CEC.
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| /linux-6.1.9/Documentation/driver-api/media/ |
| D | cec-core.rst | 3 CEC Kernel Support
6 The CEC framework provides a unified kernel interface for use with HDMI CEC
14 The CEC Protocol
17 The CEC protocol enables consumer electronic devices to communicate with each
24 The CEC framework described here is up to date with the CEC 2.0 specification.
32 CEC Adapter Interface
35 The struct cec_adapter represents the CEC adapter hardware. It is created by
49 adapter operations which are called by the CEC framework and that you
57 the name of the CEC adapter. Note: this name will be copied.
60 capabilities of the CEC adapter. These capabilities determine the
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| /linux-6.1.9/Documentation/devicetree/bindings/media/ |
| D | cec-gpio.txt | 1 * HDMI CEC GPIO driver
3 The HDMI CEC GPIO module supports CEC implementations where the CEC line
7 Please note: the maximum voltage for the CEC line is 3.63V, for the HPD and
13 - cec-gpios: gpio that the CEC line is connected to. The line should be
16 If the CEC line is associated with an HDMI receiver/transmitter, then the
21 If the CEC line is not associated with an HDMI receiver/transmitter, then
30 Example for the Raspberry Pi 3 where the CEC line is connected to
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| D | s5p-cec.txt | 1 * Samsung HDMI CEC driver
3 The HDMI CEC module is present is Samsung SoCs and its purpose is to
4 handle communication between HDMI connected devices over the CEC bus.
13 - interrupts : HDMI CEC interrupt number to the CPU.
14 - clocks : from common clock binding: handle to HDMI CEC clock.
21 - needs-hpd : if present the CEC support is only available when the HPD
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| D | tegra-cec.txt | 1 * Tegra HDMI CEC hardware
3 The HDMI CEC module is present in Tegra SoCs and its purpose is to
4 handle communication between HDMI connected devices over the CEC bus.
13 - interrupts : HDMI CEC interrupt number to the CPU.
14 - clocks : from common clock binding: handle to HDMI CEC clock.
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| D | stih-cec.txt | 1 STMicroelectronics STIH4xx HDMI CEC driver
7 - clocks : from common clock binding: handle to HDMI CEC clock
8 - interrupts : HDMI CEC interrupt number to the CPU.
10 - pinctrl-0: Specifies the pin control groups used for CEC hardware.
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| D | amlogic,meson-gx-ao-cec.yaml | 8 title: Amlogic Meson AO-CEC Controller
14 The Amlogic Meson AO-CEC module is present is Amlogic SoCs and its purpose is
15 to handle communication between HDMI connected devices over the CEC bus.
52 - description: AO-CEC clock
70 - description: AO-CEC clock generator source
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| D | cec.txt | 1 Common bindings for HDMI CEC adapters
5 - needs-hpd: if present the CEC support is only available when the HPD
6 is high. Some boards only let the CEC pin through if the HPD is high,
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| /linux-6.1.9/Documentation/admin-guide/media/ |
| D | building.rst | 52 [ ] HDMI CEC RC integration
53 [ ] Enable CEC error injection support
54 [*] HDMI CEC drivers --->
60 The ``HDMI CEC RC integration`` option enables integration of HDMI CEC
61 with Linux, allowing to receive data via HDMI CEC as if it were produced
64 The ``HDMI CEC drivers`` option allow selecting platform and USB drivers
65 that receives and/or transmits CEC codes via HDMI interfaces\ [3]_.
88 that use the media HDMI CEC support.
93 When a GPU driver supports HDMI CEC, it will automatically
94 enable the CEC core support at the media subsystem.
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| /linux-6.1.9/drivers/media/cec/i2c/ |
| D | Kconfig | 6 tristate "Chrontel CH7322 CEC controller"
11 This is a driver for the Chrontel CH7322 CEC controller. It uses the
12 generic CEC framework interface.
13 CEC bus is present in the HDMI connector and enables communication
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| /linux-6.1.9/Documentation/devicetree/bindings/display/ |
| D | brcm,bcm2711-hdmi.yaml | 27 - description: CEC register range
47 - description: The HDMI CEC parent clock
58 - description: CEC TX interrupt
59 - description: CEC RX interrupt
60 - description: CEC stuck at low interrupt
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| /linux-6.1.9/Documentation/ABI/testing/ |
| D | debugfs-cec-error-inj | 6 The CEC Framework allows for CEC error injection commands through
35 part of the CEC documentation and must keep that documentation up to date
38 The following CEC error injection implementations exist:
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| /linux-6.1.9/Documentation/devicetree/bindings/display/mediatek/ |
| D | mediatek,cec.yaml | 7 title: Mediatek HDMI CEC Controller Device Tree Bindings
14 The HDMI CEC controller handles hotplug detection and CEC communication.
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| /linux-6.1.9/drivers/gpu/drm/display/ |
| D | Kconfig | 42 bool "Enable DisplayPort CEC-Tunneling-over-AUX HDMI support"
47 Choose this option if you want to enable HDMI CEC support for
51 that do support this they often do not hook up the CEC pin.
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| /linux-6.1.9/Documentation/devicetree/bindings/media/i2c/ |
| D | chrontel,ch7322.yaml | 7 title: Chrontel HDMI-CEC Controller
13 The Chrontel CH7322 is a discrete HDMI-CEC controller. It is
14 programmable through I2C and drives a single CEC line.
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| /linux-6.1.9/drivers/media/cec/usb/rainshadow/ |
| D | Kconfig | 3 tristate "RainShadow Tech HDMI CEC"
10 This is a cec driver for the RainShadow Tech HDMI CEC device.
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