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/linux/include/media/drv-intf/
H A Dcx25840.h1 /* SPDX-License-Identifier: GPL-2.0-or-later */
4 * cx25840.h - definition for cx25840/1/2/3 inputs
14 * v4l2_subdev's load_fw operation in order to load the driver's firmware.
15 * This will load the firmware on the first invocation (further ones are NOP).
22 * Since loading the firmware is often problematic when the driver is
24 * until the first open of the video devic
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H A Dcx2341x.h1 /* SPDX-License-Identifier: GPL-2.0-or-later */
10 #include <media/v4l2-ctrls.h>
49 /* video */
95 /* needed for the video clock freq */
99 /* needed for setting up the video resolution */
133 /* video gop cluster */
148 /* video mute cluster */
154 /* video filter mode cluster */
161 /* video filter type cluster */
167 /* video filter cluster */
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/linux/Documentation/firmware-guide/acpi/
H A Dvideo_extension.rst1 .. SPDX-License-Identifier: GPL-2.0
4 ACPI video extensions
10 defining the video POST device, retrieving EDID information or to
11 setup a video output, etc. Note that this is an ref. implementation
12 only. It may or may not work for your integrated video device.
14 The ACPI video driver does 3 things regarding backlight control.
19 If the ACPI table has a video device, and acpi_backlight=vendor kernel
26 Documentation/ABI/stable/sysfs-class-backlight.
28 And what ACPI video driver does is:
32 get the brightness level the firmware thinks it is at;
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/linux/drivers/media/platform/mediatek/vpu/
H A Dmtk_vpu.h1 /* SPDX-License-Identifier: GPL-2.0-only */
4 * Author: Andrew-CT Chen <andrew-ct.chen@mediatek.com>
15 * VPU (video processor unit) is a tiny processor controlling video hardware
16 * related to video codec, scaling and color format converting.
25 * enum ipi_id - the id of inter-processor interrupt
29 * IPI_VPU_INIT is sent from VPU when firmware is
39 * handle VP8 video decoder job, and vice versa.
43 * handle VP9 video decoder job, and vice versa.
47 * handle H264 video encoder job, and vice versa.
49 * handle VP8 video encoder job,, and vice versa.
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H A DKconfig1 # SPDX-License-Identifier: GPL-2.0-only
4 tristate "Mediatek Video Processor Unit"
9 This driver provides downloading VPU firmware and
10 communicating with VPU. This driver for hw video
12 to handle video decoding/encoding in a range of formats.
15 module will be called mtk-vpu.
/linux/Documentation/admin-guide/laptops/
H A Dthinkpad-acpi.rst9 - Borislav Deianov <borislav@users.sf.net>
10 - Henrique de Moraes Holschuh <hmh@hmh.eng.br>
12 http://ibm-acpi.sf.net/
19 This driver used to be named ibm-acpi until kernel 2.6.21 and release
20 0.13-20070314. It used to be in the drivers/acpi tree, but it was
21 moved to the drivers/misc tree and renamed to thinkpad-acpi for kernel
25 The driver is named "thinkpad-acpi". In some places, like module
29 "tpacpi" is used as a shorthand where "thinkpad-acpi" would be too
33 ------
38 - Fn key combinations
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/linux/Documentation/admin-guide/media/
H A Dttusb-dec.rst1 .. SPDX-License-Identifier: GPL-2.0
7 -------------
11 - DEC2000-t
12 - DEC2450-t
13 - DEC3000-s
14 - Video Streaming
15 - Audio Streaming
16 - Section Filters
17 - Channel Zapping
18 - Hotplug firmware loader
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/linux/Documentation/devicetree/bindings/media/
H A Dqcom,venus-common.yaml1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/media/qcom,venus-common.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Qualcomm SoC Venus Video Encode and Decode Accelerators Common Properties
10 - Stanimir Varbanov <stanimir.k.varbanov@gmail.com>
11 - Vikash Garodia <quic_vgarodia@quicinc.com>
14 The Venus IP is a video encode and decode accelerator present
25 clock-names:
29 firmware-name:
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H A Dbrcm,bcm2835-unicam.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/media/brcm,bcm2835-unicam.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Raspberry Pi Kernel Maintenance <kernel-list@raspberrypi.com>
12 description: |-
14 CSI-2 or CCP2 data from image sensors or similar devices.
17 the Pi the VideoCore firmware can also control this hardware block, and
19 the firmware checks the device tree configuration during boot. If it finds
20 device tree nodes whose name starts with 'csi' then it will stop the firmware
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/linux/Documentation/fb/
H A Defifb.rst2 efifb - Generic EFI platform driver
5 This is a generic EFI platform driver for systems with UEFI firmware. The
7 both firmware with Graphics Output Protocol (GOP) displays as well as older
13 - iMac 17"/20"
14 - Macbook
15 - Macbook Pro 15"/17"
16 - MacMini
17 - ARM/ARM64/X86 systems with UEFI firmware
28 video=efifb:macbook
30 video=efifb:mini
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/linux/Documentation/driver-api/media/drivers/
H A Dcx2341x-devel.rst1 .. SPDX-License-Identifier: GPL-2.0
7 -----------------------
12 .. note:: the memory long words are little-endian ('intel format').
21 .. code-block:: none
23 ivtvctl -O min=0x02000000,max=0x020000ff
26 register space :-).
35 .. code-block:: none
37 0x00000000-0x00ffffff Encoder memory space
38 0x00000000-0x0003ffff Encode.rom
39 ???-??? MPEG buffer(s)
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/linux/drivers/media/usb/s2255/
H A Ds2255drv.c1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * s2255drv.c - a driver for the Sensoray 2255 USB video capture device
5 * Copyright (C) 2007-2014 by Sensoray Company Inc.
8 * Some video buffer code based on vivi driver:
12 * attached to separate video decoders.
19 * -full size, color mode YUYV or YUV422P: 2 channels at once
20 * -full or half size Grey scale: all 4 channels at once
21 * -half size, color mode YUYV or YUV422P: all 4 channels at once
22 * -full size, color mode YUYV or YUV422P 1/2 frame rate: all 4 channels
27 #include <linux/firmware.h>
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/linux/drivers/media/i2c/cx25840/
H A Dcx25840-core.h1 /* SPDX-License-Identifier: GPL-2.0-or-later */
4 * Copyright (C) 2003-2004 Chris Kennedy
11 #include <media/v4l2-device.h>
12 #include <media/v4l2-ctrls.h>
38 * struct cx25840_state - a device instance private data
40 * @sd: our V4L2 sub-device
42 * @volume: audio volume V4L2 control (non-cx2583x devices only)
43 * @mute: audio mute V4L2 control (non-cx2583x devices only)
46 * @generic_mode: whether we disable ivtv-specific hacks
50 * the current mode is non-radio (that is, video)
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/linux/Documentation/sound/cards/
H A Dmixart.rst13 The miXart8AES/EBU is the same with a add-on card that offers further
15 Furthermore the add-on card offers external clock synchronisation
16 (AES/EBU, Word Clock, Time Code and Video Synchro)
23 Use the mixartloader that can be found in the alsa-tools package.
35 -------
37 Sample rates : 8000 - 48000 Hz continuously
40 --------
48 -------
53 -----
56 <PCM 0-3> and <PCM Capture>
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/linux/drivers/platform/x86/lenovo/
H A DKconfig1 # SPDX-License-Identifier: GPL-2.0-only
44 will be called lenovo-wmi-camera.
75 support for Fn-Fx key combinations, Bluetooth control, video
78 <file:Documentation/admin-guide/laptops/thinkpad-acpi.rst> and
79 <http://ibm-acpi.sf.net/> .
81 This driver was formerly known as ibm-acpi.
85 Note that if you want ThinkPad-ACPI to be built-in instead of
86 modular, ALSA and rfkill will also have to be built-in.
97 Enables monitoring of the built-in console audio output control
101 If this option is enabled, ThinkPad-ACPI will export an ALSA card
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/linux/drivers/media/usb/go7007/
H A Dgo7007-driver.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * Copyright (C) 2005-2006 Micronas USA Inc.
16 #include <linux/firmware.h>
22 #include <media/v4l2-common.h>
23 #include <media/v4l2-event.h>
25 #include "go7007-priv.h"
35 go->interrupt_available = 0; in go7007_read_interrupt()
36 go->hpi_ops->read_interrupt(go); in go7007_read_interrupt()
37 if (wait_event_timeout(go->interrupt_waitq, in go7007_read_interrupt()
38 go->interrupt_available, 5*HZ) < 0) { in go7007_read_interrupt()
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/linux/drivers/media/usb/pvrusb2/
H A Dpvrusb2-encoder.c1 // SPDX-License-Identifier: GPL-2.0-only
8 #include <linux/device.h> // for linux/firmware.h
9 #include <linux/firmware.h>
10 #include "pvrusb2-util.h"
11 #include "pvrusb2-encoder.h"
12 #include "pvrusb2-hdw-internal.h"
13 #include "pvrusb2-debug.h"
14 #include "pvrusb2-fx2-cmd.h"
18 /* Firmware mailbox flags - definitions found from ivtv */
48 memset(hdw->cmd_buffer,0,sizeof(hdw->cmd_buffer)); in pvr2_encoder_write_words()
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H A Dpvrusb2-hdw.h1 /* SPDX-License-Identifier: GPL-2.0-only */
11 #include <media/v4l2-dev.h>
12 #include "pvrusb2-io.h"
13 #include "pvrusb2-ctrl.h"
17 pvr2_hdw_get_ctrl_by_id() - these are NOT visible in V4L */
47 pvr2_config_mpeg, /* Encoded / compressed video */
50 pvr2_config_rawvideo, /* Video raw frames */
61 * DEAD - Device is in an unusable state and cannot be recovered. This
66 * COLD - Device is in an unusable state, needs microcontroller firmware.
68 * WARM - We can communicate with the device and the proper
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/linux/Documentation/firmware-guide/acpi/dsd/
H A Dleds.rst1 .. SPDX-License-Identifier: GPL-2.0
14 Referring to LEDs in Device tree is documented in [video-interfaces], in
15 "flash-leds" property documentation. In short, LEDs are directly referred to by
22 firmware and software, it uniquely identifies the LED driver outputs.
39 ToUUID("dbb8e3e6-5886-4ba6-8795-1319f52a966b"),
46 ToUUID("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"),
49 Package () { "flash-max-microamp", 1000000 },
50 Package () { "flash-timeout-us", 200000 },
51 Package () { "led-max-microamp", 100000 },
56 ToUUID("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"),
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/linux/drivers/video/fbdev/
H A DKconfig1 # SPDX-License-Identifier: GPL-2.0-only
12 hardware. It represents the frame buffer of some video hardware and
14 a well-defined interface, so the software doesn't need to know
15 anything about the low-level (hardware register) stuff.
21 On several non-X86 architectures, the frame buffer device is the
29 and the Framebuffer-HOWTO at
30 <http://www.munted.org.uk/programming/Framebuffer-HOWTO-1.3.html> for more
40 are compiling a kernel for a non-x86 architecture.
46 device-aware may cause unexpected results. If unsure, say N.
57 Common utility functions useful to fbdev drivers of VGA-based
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/linux/drivers/gpu/drm/rockchip/
H A Dcdn-dp-core.c1 // SPDX-License-Identifier: GPL-2.0-only
4 * Author: Chris Zhong <zyw@rock-chips.com>
10 #include <linux/firmware.h>
16 #include <sound/hdmi-codec.h>
27 #include "cdn-dp-core.h"
28 #include "cdn-dp-reg.h"
63 { .compatible = "rockchip,rk3399-cdn-dp",
75 ret = clk_prepare_enable(dp->grf_clk); in cdn_dp_grf_write()
77 DRM_DEV_ERROR(dp->dev, "Failed to prepare_enable grf clock\n"); in cdn_dp_grf_write()
81 ret = regmap_write(dp->grf, reg, val); in cdn_dp_grf_write()
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H A Dcdn-dp-reg.c1 // SPDX-License-Identifier: GPL-2.0-only
4 * Author: Chris Zhong <zyw@rock-chips.com>
14 #include "cdn-dp-core.h"
15 #include "cdn-dp-reg.h"
26 writel(clk / 1000000, dp->regs + SW_CLK_H); in cdn_dp_set_fw_clk()
45 writel(val, dp->regs + SOURCE_DPTX_CAR); in cdn_dp_clock_reset()
48 writel(val, dp->regs + SOURCE_PHY_CAR); in cdn_dp_clock_reset()
54 writel(val, dp->regs + SOURCE_PKT_CAR); in cdn_dp_clock_reset()
62 writel(val, dp->regs + SOURCE_AIF_CAR); in cdn_dp_clock_reset()
68 writel(val, dp->regs + SOURCE_CIPHER_CAR); in cdn_dp_clock_reset()
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/linux/drivers/staging/media/av7110/
H A DKconfig1 # SPDX-License-Identifier: GPL-2.0-only
23 by Fujitsu-Siemens, Technotrend, Hauppauge and others.
28 This driver needs an external firmware. Please use the script
30 download/extract it, and then copy it to /usr/lib/hotplug/firmware
31 or /lib/firmware (depending on configuration of firmware hotplug).
45 The AV7110 firmware provides some code to generate an OnScreenDisplay
46 on the video output. This is kind of nonstandard and not guaranteed to
65 A DVB-T tuner module. Say Y when you want to support this frontend.
67 This driver needs external firmware. Please use the command
69 download/extract it, and then copy it to /usr/lib/hotplug/firmware
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/linux/drivers/media/platform/broadcom/
H A DKconfig1 # SPDX-License-Identifier: GPL-2.0
4 tristate "Broadcom BCM283x/BCM271x Unicam video capture driver"
13 Say Y here to enable support for the BCM283x/BCM271x CSI-2 receiver.
14 This is a V4L2 driver that controls the CSI-2 receiver directly,
15 independently from the VC4 firmware.
17 This driver is mutually exclusive with the use of bcm2835-camera. The
18 firmware will disable all access to the peripheral from within the
19 firmware if it finds a DT node using it, and bcm2835-camera will
23 called bcm2835-unicam.
/linux/drivers/media/platform/mediatek/vcodec/decoder/
H A Dvdec_ipi_msg.h1 /* SPDX-License-Identifier: GPL-2.0 */
11 * enum vdec_ipi_msgid - message id between AP and VPU
36 * struct vdec_ap_ipi_cmd - generic AP to VPU ipi command format
54 * struct vdec_vpu_ipi_ack - generic VPU to AP ipi command format
57 * @ap_inst_addr : AP video decoder instance address
66 * struct vdec_ap_ipi_init - for AP_IPIMSG_DEC_INIT
69 * @ap_inst_addr : AP video decoder instance address
78 * struct vdec_ap_ipi_dec_start - for AP_IPIMSG_DEC_START
99 * struct vdec_vpu_ipi_init_ack - for VPU_IPIMSG_DEC_INIT_ACK
104 * @vdec_abi_version: ABI version of the firmware. Kernel can use it to
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