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/linux-6.12.1/drivers/media/cec/platform/
DKconfig1 # SPDX-License-Identifier: GPL-2.0-only
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.
[all …]
/linux-6.12.1/Documentation/admin-guide/media/
Dcec.rst1 .. SPDX-License-Identifier: GPL-2.0
4 HDMI CEC
10 HDMI Transmitters:
12 - Exynos4
13 - Exynos5
14 - STIH4xx HDMI CEC
15 - V4L2 adv7511 (same HW, but a different driver from the drm adv7511)
16 - stm32
17 - Allwinner A10 (sun4i)
18 - Raspberry Pi
[all …]
Dbuilding.rst1 .. SPDX-License-Identifier: GPL-2.0
8 distribution-specific source file or via the Kernel's main git tree\ [1]_.
12 - you're a braveheart and want to experiment with new stuff;
13 - if you want to report a bug;
14 - if you're developing new patches
23 https://linuxtv.org/wiki/index.php/How_to_Obtain,_Build_and_Install_V4L-DVB_Device_Drivers
50 Device Drivers --->
51 <M> Remote Controller support --->
52 [ ] HDMI CEC RC integration
53 [ ] Enable CEC error injection support
[all …]
/linux-6.12.1/drivers/gpu/drm/bridge/synopsys/
Ddw-hdmi-cec.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * Designware HDMI CEC driver
5 * Copyright (C) 2015-2017 Russell King.
16 #include <media/cec.h>
17 #include <media/cec-notifier.h>
19 #include "dw-hdmi-cec.h"
55 struct dw_hdmi *hdmi; member
71 static void dw_hdmi_write(struct dw_hdmi_cec *cec, u8 val, int offset) in dw_hdmi_write() argument
73 cec->ops->write(cec->hdmi, val, offset); in dw_hdmi_write()
76 static u8 dw_hdmi_read(struct dw_hdmi_cec *cec, int offset) in dw_hdmi_read() argument
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/linux-6.12.1/Documentation/userspace-api/media/cec/
Dcec-intro.rst1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
3 .. _cec-intro:
8 HDMI connectors provide a single pin for use by the Consumer Electronics
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
12 Channel) of the HDMI 1.4a (:ref:`hdmi`) specification and the
13 extensions added to CEC version 2.0 are defined in chapter 11 of the
14 HDMI 2.0 (:ref:`hdmi2`) specification.
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
[all …]
Dcec-ioc-adap-g-caps.rst1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
2 .. c:namespace:: CEC
13 CEC_ADAP_G_CAPS - Query device capabilities
33 All cec devices must support :ref:`ioctl CEC_ADAP_G_CAPS <CEC_ADAP_G_CAPS>`. To query
42 .. flat-table:: struct cec_caps
43 :header-rows: 0
44 :stub-columns: 0
47 * - char
48 - ``driver[32]``
49 - The name of the cec adapter driver.
[all …]
Dcec-ioc-dqevent.rst1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
2 .. c:namespace:: CEC
13 CEC_DQEVENT - Dequeue a CEC event
33 CEC devices can send asynchronous events. These can be retrieved by
35 non-blocking mode and no event is pending, then it will return -1 and
38 The internal event queues are per-filehandle and per-event type. If
43 two :ref:`CEC_EVENT_STATE_CHANGE <CEC-EVENT-STATE-CHANGE>` events with
51 .. flat-table:: struct cec_event_state_change
52 :header-rows: 0
53 :stub-columns: 0
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/linux-6.12.1/Documentation/devicetree/bindings/display/
Dbrcm,bcm2711-hdmi.yaml1 # SPDX-License-Identifier: GPL-2.0
3 ---
4 $id: http://devicetree.org/schemas/display/brcm,bcm2711-hdmi.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Broadcom BCM2711 HDMI Controller
10 - Eric Anholt <eric@anholt.net>
15 - brcm,bcm2711-hdmi0
16 - brcm,bcm2711-hdmi1
20 - description: HDMI controller register range
21 - description: DVP register range
[all …]
Dallwinner,sun8i-a83t-dw-hdmi.yaml1 # SPDX-License-Identifier: GPL-2.0
3 ---
4 $id: http://devicetree.org/schemas/display/allwinner,sun8i-a83t-dw-hdmi.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Allwinner A83t DWC HDMI TX Encoder
10 The HDMI transmitter is a Synopsys DesignWare HDMI 1.4 TX controller
12 and CEC.
14 These DT bindings follow the Synopsys DWC HDMI TX bindings defined
15 in bridge/synopsys,dw-hdmi.yaml with the following device-specific
19 - Chen-Yu Tsai <wens@csie.org>
[all …]
/linux-6.12.1/drivers/media/cec/
DKconfig1 # SPDX-License-Identifier: GPL-2.0-only
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),
32 which is an optional HDMI feature.
34 Say Y when you have an HDMI receiver, transmitter or a USB CEC
[all …]
/linux-6.12.1/Documentation/devicetree/bindings/media/i2c/
Dadv7604.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Analog Devices ADV7604/10/11/12 video decoder with HDMI receiver
10 - Hans Verkuil <hverkuil-cisco@xs4all.nl>
14 an integrated HDMI receiver. The ADV7604 has four multiplexed HDMI inputs
15 and one analog input, and the ADV7610/11 have one HDMI input and no analog
16 input. The ADV7612 is similar to the ADV7610/11 but has 2 HDMI inputs.
23 - enum:
24 - adi,adv7610
[all …]
Dadv748x.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Analog Devices ADV748X video decoder with HDMI receiver
10 - Kieran Bingham <kieran.bingham@ideasonboard.com>
11 - Niklas Söderlund <niklas.soderlund@ragnatech.se>
15 HDMI receiver. They can output CSI-2 on two independent outputs TXA and TXB
16 from three input sources HDMI, analog and TTL.
21 - enum:
22 - adi,adv7481
[all …]
Dchrontel,ch7322.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Chrontel HDMI-CEC Controller
10 - Jeff Chase <jnchase@google.com>
13 The Chrontel CH7322 is a discrete HDMI-CEC controller. It is
14 programmable through I2C and drives a single CEC line.
17 - $ref: /schemas/media/cec/cec-common.yaml#
33 reset-gpios:
36 pin is active-low.
[all …]
/linux-6.12.1/Documentation/devicetree/bindings/media/cec/
Dcec-gpio.yaml1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
3 ---
4 $id: http://devicetree.org/schemas/media/cec/cec-gpio.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: HDMI CEC GPIO
10 - Hans Verkuil <hverkuil-cisco@xs4all.nl>
13 The HDMI CEC GPIO module supports CEC implementations where the CEC line is
14 hooked up to a pull-up GPIO line and - optionally - the HPD line is hooked up
17 Please note:: the maximum voltage for the CEC line is 3.63V, for the HPD and
23 const: cec-gpio
[all …]
Dnvidia,tegra114-cec.yaml1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
3 ---
4 $id: http://devicetree.org/schemas/media/cec/nvidia,tegra114-cec.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: NVIDIA Tegra HDMI CEC
10 - Hans Verkuil <hverkuil-cisco@xs4all.nl>
13 - $ref: cec-common.yaml#
18 - nvidia,tegra114-cec
19 - nvidia,tegra124-cec
20 - nvidia,tegra210-cec
[all …]
Damlogic,meson-gx-ao-cec.yaml1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
4 ---
5 $id: http://devicetree.org/schemas/media/cec/amlogic,meson-gx-ao-cec.yaml#
6 $schema: http://devicetree.org/meta-schemas/core.yaml#
8 title: Amlogic Meson AO-CEC Controller
11 - Neil Armstrong <neil.armstrong@linaro.org>
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.
20 - amlogic,meson-gx-ao-cec # GXBB, GXL, GXM, G12A and SM1 AO_CEC_A module
21 - amlogic,meson-g12a-ao-cec # G12A AO_CEC_B module
[all …]
Dst,stih-cec.yaml1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
3 ---
4 $id: http://devicetree.org/schemas/media/cec/st,stih-cec.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: STMicroelectronics STIH4xx HDMI CEC
10 - Alain Volmat <alain.volmat@foss.st.com>
13 - $ref: cec-common.yaml#
17 const: st,stih-cec
22 clock-names:
24 - const: cec-clk
[all …]
Dsamsung,s5p-cec.yaml1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
3 ---
4 $id: http://devicetree.org/schemas/media/cec/samsung,s5p-cec.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Samsung S5PV210 and Exynos HDMI CEC
10 - Krzysztof Kozlowski <krzk@kernel.org>
11 - Marek Szyprowski <m.szyprowski@samsung.com>
14 - $ref: cec-common.yaml#
18 const: samsung,s5p-cec
23 clock-names:
[all …]
Dcec-common.yaml1 # SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause
3 ---
4 $id: http://devicetree.org/schemas/media/cec/cec-common.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: HDMI CEC Adapters Common Properties
10 - Hans Verkuil <hverkuil@xs4all.nl>
14 pattern: "^cec(@[0-9a-f]+|-[0-9]+)?$"
16 hdmi-phandle:
19 Phandle to the HDMI controller.
21 needs-hpd:
[all …]
Dst,stm32-cec.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/media/cec/st,stm32-cec.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: STMicroelectronics STM32 CEC
10 - Yannick Fertre <yannick.fertre@foss.st.com>
14 const: st,stm32-cec
24 - description: Module Clock
25 - description: Bus Clock
27 clock-names:
[all …]
/linux-6.12.1/include/media/
Dcec-notifier.h1 /* SPDX-License-Identifier: GPL-2.0-only */
3 * cec-notifier.h - notify CEC drivers of physical address changes
6 * Copyright 2016-2017 Cisco Systems, Inc. and/or its affiliates. All rights reserved.
13 #include <media/cec.h>
23 * cec_notifier_conn_register - find or create a new cec_notifier for the given
24 * HDMI device and connector tuple.
25 * @hdmi_dev: HDMI device that sends the events.
27 * if there is always only one HDMI connector created by the HDMI device.
43 * cec_notifier_conn_unregister - decrease refcount and delete when the
50 * cec_notifier_cec_adap_register - find or create a new cec_notifier for the
[all …]
/linux-6.12.1/drivers/gpu/drm/display/
Ddrm_dp_cec.c1 // SPDX-License-Identifier: GPL-2.0
3 * DisplayPort CEC-Tunneling-over-AUX support
12 #include <media/cec.h>
20 * Unfortunately it turns out that we have a chicken-and-egg situation
21 * here. Quite a few active (mini-)DP-to-HDMI or USB-C-to-HDMI adapters
22 * have a converter chip that supports CEC-Tunneling-over-AUX (usually the
23 * Parade PS176), but they do not wire up the CEC pin, thus making CEC
24 * useless. Note that MegaChips 2900-based adapters appear to have good
25 * support for CEC tunneling. Those adapters that I have tested using
26 * this chipset all have the CEC line connected.
[all …]
/linux-6.12.1/Documentation/devicetree/bindings/display/mediatek/
Dmediatek,cec.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/display/mediatek/mediatek,cec.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Mediatek HDMI CEC Controller
10 - CK Hu <ck.hu@mediatek.com>
11 - Jitao shi <jitao.shi@mediatek.com>
14 The HDMI CEC controller handles hotplug detection and CEC communication.
19 - mediatek,mt7623-cec
20 - mediatek,mt8167-cec
[all …]
/linux-6.12.1/Documentation/driver-api/media/
Dcec-core.rst1 .. SPDX-License-Identifier: GPL-2.0
3 CEC Kernel Support
6 The CEC framework provides a unified kernel interface for use with HDMI CEC
14 The CEC Protocol
15 ----------------
17 The CEC protocol enables consumer electronic devices to communicate with each
18 other through the HDMI connection. The protocol uses logical addresses in the
24 The CEC framework described here is up to date with the CEC 2.0 specification.
25 It is documented in the HDMI 1.4 specification with the new 2.0 bits documented
26 in the HDMI 2.0 specification. But for most of the features the freely available
[all …]
/linux-6.12.1/Documentation/devicetree/bindings/display/bridge/
Dadi,adv7533.yaml1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Analog Devices ADV7533/35 HDMI Encoders
10 - Laurent Pinchart <laurent.pinchart@ideasonboard.com>
13 - $ref: /schemas/sound/dai-common.yaml#
16 The ADV7533 and ADV7535 are HDMI audio and video transmitters
17 compatible with HDMI 1.4 and DVI 1.0. They support color space
18 conversion, S/PDIF, CEC and HDCP. The transmitter input is MIPI DSI.
23 - adi,adv7533
[all …]

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