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/linux/Documentation/fb/
H A Duvesafb.rst2 uvesafb - A Generic Driver for VBE2+ compliant video cards
6 ---------------
8 uvesafb should work with any video card that has a Video BIOS compliant
12 v86d. v86d is used to run the x86 Video BIOS code in a simulated and
30 --------------------------
32 uvesafb is a _generic_ driver which supports a wide variety of video
33 cards, but which is ultimately limited by the Video BIOS interface.
36 - Lack of any type of acceleration.
37 - A strict and limited set of supported video modes. Often the native
39 with uvesafb, simply because the Video BIOS doesn't support the
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H A Dmodedb.rst2 modedb default video mode support
6 Currently all frame buffer device drivers have their own video mode databases,
9 - one routine to probe for video modes, which can be used by all frame buffer
11 - one generic video mode database with a fair amount of standard videomodes
13 - the possibility to supply your own mode database for graphics hardware that
14 needs non-standard modes, like amifb and Mac frame buffer drivers (which
17 When a frame buffer device receives a video= option it doesn't know, it should
18 consider that to be a video mode option. If no frame buffer device is specified
19 in a video= option, fbmem considers that to be a global video mode option.
21 Valid mode specifiers (mode_option argument)::
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H A Dvesafb.rst2 vesafb - Generic graphic framebuffer driver
7 The idea is simple: Turn on graphics mode at boot time with the help
12 graphics mode. Switching mode later on (in protected mode) is
13 impossible; BIOS calls work in real mode only. VESA BIOS Extensions
20 * You can run XF68_FBDev on top of /dev/fb0 (=> non-accelerated X11
22 * Most important: boot logo :-)
26 * graphic mode is slower than text mode...
33 Documentation/admin-guide/svga.rst for details.
35 You should compile in both vgacon (for text mode) and vesafb (for
36 graphics mode). Which of them takes over the console depends on
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H A Dep93xx-fb.rst7 can use the standard Linux video mode database. In your board file::
14 If you have an embedded LCD display then you need to define a video
15 mode for it as follows::
24 Note that the pixel clock value is in pico-seconds. You can use the
44 Video Attribute Flags
48 to configure the controller. The video attributes flags are fully
96 struct ep93xxfb_mach_info *mach_info = pdev->dev.platform_data;
102 Setting the video mode
105 The video mode is set using the following syntax::
107 video=XRESxYRES[-BPP][@REFRESH]
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H A Dsisfb.rst2 sisfb - SiS framebuffer device driver
8 - SiS 300 series: SiS 300/305, 540, 630(S), 730(S)
9 - SiS 315 series: SiS 315/H/PRO, 55x, (M)65x, 740, (M)661(F/M)X, (M)741(GX)
10 - SiS 330 series: SiS 330 ("Xabre"), (M)760
16 sisfb is eg. useful if you want a high-resolution text console. Besides that,
46 append="video=sisfb:mode:1024x768x16,mem:12288,rate:75"
50 modprobe sisfb mode=1024x768x16 rate=75 mem=12288
54 the parameter format is video=sisfb:mode:none or video=sisfb:mode:1024x768x16
55 (or whatever mode you want to use, alternatively using any other format
56 described above or the vesa keyword instead of mode). If compiled as a module,
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/linux/Documentation/admin-guide/
H A Dsvga.rst4 Video Mode Selection Support 2.13
7 :Copyright: |copy| 1995--1999 Martin Mares, <mj@ucw.cz>
12 This small document describes the "Video Mode Selection" feature which
13 allows the use of various special video modes supported by the video BIOS. Due
21 enter ``scan`` on the video mode prompt, pick the mode you want to use,
22 remember its mode ID (the four-digit hexadecimal number) and then
25 The video mode to be used is selected by a kernel parameter which can be
31 NORMAL_VGA - Standard 80x25 mode available on all display adapters.
33 EXTENDED_VGA - Standard 8-pixel font mode: 80x43 on EGA, 80x50 on VGA.
35 ASK_VGA - Display a video mode menu upon startup (see below).
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/linux/Documentation/userspace-api/media/drivers/
H A Daspeed-video.rst1 .. SPDX-License-Identifier: GPL-2.0
5 ASPEED video driver
8 ASPEED Video Engine found on AST2400/2500/2600 SoC supports high performance
9 video compressions with a wide range of video quality and compression ratio
14 * JPEG JFIF standard mode: for single frame and management compression
15 * ASPEED proprietary mode: for multi-frame and differential compression.
16 Support 2-pass (high quality) video compression scheme (Patent pending by
17 ASPEED). Provide visually lossless video compression quality or to reduce
21 stands for JPEG JFIF standard mode; V4L2_PIX_FMT_AJPG stands for ASPEED
22 proprietary mode.
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H A Dnpcm-video.rst1 .. SPDX-License-Identifier: GPL-2.0
5 NPCM video driver
8 This driver is used to control the Video Capture/Differentiation (VCD) engine
10 capture a frame from digital video input and compare two frames in memory, and
13 Driver-specific Controls
14 ------------------------
21 - COMPLETE mode:
25 - DIFF mode:
30 Application can use ``V4L2_CID_NPCM_CAPTURE_MODE`` control to set the VCD mode
33 - ``V4L2_NPCM_CAPTURE_MODE_COMPLETE``: will set VCD to COMPLETE mode.
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/linux/arch/x86/boot/
H A Dvideo.h1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /* -*- linux-c -*- ------------------------------------------------------- *
5 * Copyright 2007 rPath, Inc. - All Rights Reserved
7 * ----------------------------------------------------------------------- */
10 * Header file for the real-mode video probing code
19 * This code uses an extended set of video mode numbers. These include:
21 * NORMAL_VGA (-1)
22 * EXTENDED_VGA (-2)
23 * ASK_VGA (-3)
24 * Video modes numbered by menu position -- NOT RECOMMENDED because of lack
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H A Dvideo-bios.c1 // SPDX-License-Identifier: GPL-2.0-only
2 /* -*- linux-c -*- ------------------------------------------------------- *
5 * Copyright 2007 rPath, Inc. - All Rights Reserved
8 * ----------------------------------------------------------------------- */
11 * Standard video BIOS modes
17 #include "video.h"
21 /* Set a conventional BIOS mode */
22 static int set_bios_mode(u8 mode);
26 return set_bios_mode(mi->mode - VIDEO_FIRST_BIOS); in bios_set_mode()
29 static int set_bios_mode(u8 mode) in set_bios_mode() argument
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H A Dvideo-mode.c1 // SPDX-License-Identifier: GPL-2.0-only
2 /* -*- linux-c -*- ------------------------------------------------------- *
5 * Copyright 2007-2008 rPath, Inc. - All Rights Reserved
7 * ----------------------------------------------------------------------- */
10 * arch/i386/boot/video-mode.c
12 * Set the video mode. This is separated out into a different
17 #include "video.h"
27 int do_restore; /* Screen contents changed during mode flip */
28 int graphic_mode; /* Graphic mode with linear frame buffer */
30 /* Probe the video drivers and have them generate their mode lists. */
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/linux/Documentation/admin-guide/media/
H A Dvivid.rst1 .. SPDX-License-Identifier: GPL-2.0
3 The Virtual Video Test Driver (vivid)
6 This driver emulates video4linux hardware of various types: video capture, video
13 Each input can be a webcam, TV capture device, S-Video capture device or an HDMI
14 capture device. Each output can be an S-Video output device or an HDMI output
23 - Support for read()/write(), MMAP, USERPTR and DMABUF streaming I/O.
24 - A large list of test patterns and variations thereof
25 - Working brightness, contrast, saturation and hue controls
26 - Support for the alpha color component
27 - Full colorspace support, including limited/full RGB range
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/linux/Documentation/driver-api/
H A Dframe-buffer.rst9 fb_info defines the current state of a particular video card. Inside
14 fb_var_screeninfo is used to describe the features of a video card
19 of a card that are created when a mode is set and can't be changed
26 setting a mode of 800x600 on a fix frequency monitor. With the new API,
32 -------------------
34 .. kernel-doc:: drivers/video/fbdev/core/fbmem.c
38 ---------------------
40 .. kernel-doc:: drivers/video/fbdev/core/fbcmap.c
43 Frame Buffer Video Mode Database
44 --------------------------------
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/linux/Documentation/userspace-api/media/v4l/
H A Dvidioc-g-parm.rst1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
13 VIDIOC_G_PARM - VIDIOC_S_PARM - Get or set streaming parameters
44 frame interval that is typically embedded in the encoded video stream.
50 internally by a driver in read/write mode. For implications see the
63 .. flat-table:: struct v4l2_streamparm
64 :header-rows: 0
65 :stub-columns: 0
68 * - __u32
69 - ``type``
70 - The buffer (stream) type, same as struct
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H A Dext-ctrls-codec.rst1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
3 .. _codec-controls:
24 .. _mpeg-control-id:
27 -----------------
35 .. _v4l2-mpeg-stream-type:
40 enum v4l2_mpeg_stream_type -
41 The MPEG-1, -2 or -4 output stream type. One cannot assume anything
48 .. flat-table::
49 :header-rows: 0
50 :stub-columns: 0
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H A Dvidioc-g-tuner.rst1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
13 VIDIOC_G_TUNER - VIDIOC_S_TUNER - Get or set tuner attributes
46 Tuners have two writable properties, the audio mode and the radio
47 frequency. To change the audio mode, applications initialize the
50 which is determined by the current video input. Drivers may choose a
51 different audio mode if the requested mode is invalid or unsupported.
52 Since this is a write-only ioctl, it does not return the actually
53 selected audio mode.
68 .. flat-table:: struct v4l2_tuner
69 :header-rows: 0
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/linux/Documentation/userspace-api/media/dvb/
H A Dlegacy_dvb_video.rst1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later OR GPL-2.0
3 .. c:namespace:: dtv.legacy.video
8 DVB Video Device
14 The DVB video device controls the MPEG2 video decoder of the DVB
17 ``linux/dvb/video.h`` in your application.
19 Note that the DVB video device only controls decoding of the MPEG video
22 ``/dev/video``, which allows scaling and defining output windows.
25 omission of the audio and video device as well as the video4linux
31 functionality. Use :ref:`V4L2 ioctls<video>` for new drivers!
34 Video Data Types
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/linux/drivers/gpu/drm/xlnx/
H A Dzynqmp_disp.c1 // SPDX-License-Identifier: GPL-2.0
5 * Copyright (C) 2017 - 2020 Xilinx, Inc.
8 * - Hyun Woo Kwon <hyun.kwon@xilinx.com>
9 * - Laurent Pinchart <laurent.pinchart@ideasonboard.com>
19 #include <linux/dma-mapping.h>
21 #include <linux/media-bus-format.h>
34 * --------
36 * The display controller part of ZynqMP DP subsystem, made of the Audio/Video
37 * Buffer Manager, the Video Rendering Pipeline (blender) and the Audio Mixer.
39 * +------------------------------------------------------------+
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/linux/drivers/gpu/drm/rockchip/
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/video/fbdev/matrox/
H A Dmatroxfb_crtc2.c1 // SPDX-License-Identifier: GPL-2.0-only
6 * (c) 1998-2002 Petr Vandrovec <vandrove@vc.cvut.cz>
38 if (m2info->fbcon.var.grayscale) { in matroxfb_dh_setcolreg()
42 red = CNVT_TOHW(red, m2info->fbcon.var.red.length); in matroxfb_dh_setcolreg()
43 green = CNVT_TOHW(green, m2info->fbcon.var.green.length); in matroxfb_dh_setcolreg()
44 blue = CNVT_TOHW(blue, m2info->fbcon.var.blue.length); in matroxfb_dh_setcolreg()
45 transp = CNVT_TOHW(transp, m2info->fbcon.var.transp.length); in matroxfb_dh_setcolreg()
47 col = (red << m2info->fbcon.var.red.offset) | in matroxfb_dh_setcolreg()
48 (green << m2info->fbcon.var.green.offset) | in matroxfb_dh_setcolreg()
49 (blue << m2info->fbcon.var.blue.offset) | in matroxfb_dh_setcolreg()
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/linux/drivers/media/platform/via/
H A Dvia-camera.h1 /* SPDX-License-Identifier: GPL-2.0 */
6 #define VCR_IC_EAV 0x0001 /* End of active video status */
9 #define VCR_IC_ACTBUF 0x0018 /* Active video buffer */
10 #define VCR_IC_VSYNC 0x0020 /* 0 = VB, 1 = active video */
13 #define VCR_IC_INTEN 0x0100 /* End of active video int. enable */
20 #define VCR_TSC_METHOD 0x00000c /* DMA method (non-functional) */
24 #define VCR_TSC_BE 0x200000 /* MSB first (serial mode) */
36 #define VCR_CI_HDMODE 0x00000040 /* CCIR656-16 hdr decode mode; 1=16b */
37 #define VCR_CI_BSWAP 0x00000080 /* Swap bytes (16-bit) */
44 #define VCR_CI_DIODD 0 /* De-interlace odd, 30fps */
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/linux/drivers/media/usb/cx231xx/
H A Dcx231xx-pcb-cfg.c1 // SPDX-License-Identifier: GPL-2.0-or-later
3 cx231xx-pcb-config.c - driver for Conexant
4 Cx23100/101/102 USB video capture devices
11 #include "cx231xx-conf-reg.h"
15 MODULE_PARM_DESC(pcb_debug, "enable pcb config debug messages [video]");
24 MOD_DIGITAL, /* mode */
43 NOT_SUPPORTED, /* VIDEO */
62 /* full-speed config */
71 NOT_SUPPORTED, /* VIDEO */
95 MOD_DIGITAL, /* mode */
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/linux/Documentation/arch/m68k/
H A Dkernel-options.rst9 Author: Roman.Hodek@informatik.uni-erlangen.de (Roman Hodek)
11 Update: jds@kom.auc.dk (Jes Sorensen) and faq@linux-m68k.org (Chris Lawrence)
58 ----------
76 /dev/ram: -> 0x0100 (initial ramdisk)
77 /dev/hda: -> 0x0300 (first IDE disk)
78 /dev/hdb: -> 0x0340 (second IDE disk)
79 /dev/sda: -> 0x0800 (first SCSI disk)
80 /dev/sdb: -> 0x0810 (second SCSI disk)
81 /dev/sdc: -> 0x0820 (third SCSI disk)
82 /dev/sdd: -> 0x0830 (forth SCSI disk)
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/linux/Documentation/power/
H A Dvideo.rst2 Video issues with S3 resume
5 2003-2006, Pavel Machek
9 it. Unfortunately there's one exception: video card. Those are usually
11 boot video card. (Kernel usually does not even contain video card
12 driver -- vesafb and vgacon are widely used).
15 run normally so video card is normally initialized. It should not be
19 We either have to run video BIOS during early resume, or interpret it
21 system because video state is preserved. Unfortunately different
40 There are a few types of systems where video works after S3 resume:
42 (1) systems where video state is preserved over S3.
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/linux/include/uapi/linux/dvb/
H A Dvideo.h1 /* SPDX-License-Identifier: LGPL-2.1+ WITH Linux-syscall-note */
3 * video.h - DEPRECATED MPEG-TS video decoder API
48 VIDEO_STOPPED, /* Video is stopped */
49 VIDEO_PLAYING, /* Video is currently playing */
50 VIDEO_FREEZED /* Video is freezed */
86 -1 specifies backward single stepping,
88 <-1: reverse playback at (-speed/1000) of the normal speed. */
100 the Vsync is for an odd, even or progressive (i.e. non-interlaced)
124 int video_blank; /* blank video on freeze? */
128 video_displayformat_t display_format;/* selected cropping mode */
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