| /linux/Documentation/admin-guide/ |
| H A D | svga.rst | 4 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
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
28 (present in standard Linux utility packages). You can use the following values
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/ABI/testing/ |
| H A D | sysfs-driver-typec-displayport | 18 Note. USB configuration does not equal to Exit Mode. It is
19 separate configuration defined in VESA DisplayPort Alt Mode on
20 USB Type-C Standard. Functionally it equals to the situation
21 where the mode has been exited (to exit the mode, see
22 Documentation/ABI/testing/sysfs-bus-typec, and use file
29 VESA DisplayPort Alt Mode on USB Type-C Standard defines six
30 different pin assignments for USB Type-C connector that are
44 Note. As of VESA DisplayPort Alt Mode on USB Type-C Standard
55 VESA DisplayPort Alt Mode on USB Type-C Standard defines how
56 HotPlugDetect(HPD) shall be supported on the USB-C connector when
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| H A D | sysfs-class-power-wilco | 1 What: /sys/class/power_supply/wilco-charger/charge_type
7 Standard:
8 Fully charges battery at a standard rate.
24 On Wilco device this mode is pre-configured in the factory
25 through EC's private PID. Switching to a different mode will
26 be denied by Wilco EC when Long Life mode is enabled.
28 What: /sys/class/power_supply/wilco-charger/charge_control_start_threshold
35 What: /sys/class/power_supply/wilco-charger/charge_control_end_threshold
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| /linux/drivers/hid/intel-thc-hid/intel-quicki2c/ |
| H A D | quicki2c-dev.h | 1 /* SPDX-License-Identifier: GPL-2.0 */
7 #include <linux/hid-over-i2c.h>
53 * change to low power LTR mode.
72 * struct quicki2c_subip_acpi_parameter - QuickI2C ACPI DSD parameters
75 * @addressing_mode: I2C device slave address mode, 7bit or 10bit
88 * struct quicki2c_subip_acpi_config - QuickI2C ACPI DSD parameters
89 * @SMHX: Standard Mode (100 kbit/s) Serial Clock Line HIGH Period
90 * @SMLX: Standard Mode (100 kbit/s) Serial Clock Line LOW Period
91 * @SMTD: Standard Mode (100 kbit/s) Serial Data Line Transmit Hold Period
92 * @SMRD: Standard Mode (100 kbit/s) Serial Data Receive Hold Period
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| /linux/Documentation/networking/ |
| H A D | plip.rst | 1 .. SPDX-License-Identifier: GPL-2.0
14 -----------------
17 This device interface allows a point-to-point connection between two
25 printer port. PLIP is a non-standard, but [can use] uses the standard
26 LapLink null-printer cable [can also work in turbo mode, with a PLIP
52 an existing Ethernet. Isn't standard (not even de facto standard, like
62 -------------------
77 On these machines, the PLIP driver can be used in IRQ-less mode, where
79 and if such data is available, process it. This mode is less efficient than
80 the IRQ mode, because the driver has to check the parallel port many times
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| /linux/Documentation/fb/ |
| H A D | modedb.rst | 2 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
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)::
23 <xres>x<yres>[M][R][-<bpp>][@<refresh>][i][m][eDd]
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| H A D | uvesafb.rst | 2 uvesafb - A Generic Driver for VBE2+ compliant video cards
6 ---------------
9 with the VBE 2.0 standard.
30 --------------------------
36 - Lack of any type of acceleration.
37 - A strict and limited set of supported video modes. Often the native
40 video mode you want to use. This can be especially painful with
42 ratio, which is what most BIOS-es are limited to.
43 - Adjusting the refresh rate is only possible with a VBE 3.0 compliant
44 Video BIOS. Note that many nVidia Video BIOS-es claim to be VBE 3.0
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| H A D | udlfb.rst | 2 udlfb - DisplayLink USB 2.0 driver
15 pixels line-by-line via USB bulk transfers.
18 does not require any acks - the effect is very low latency that
20 non-gaming and non-video applications.
22 Mode setting, EDID read, etc are other bulk or control transfers. Mode
23 setting is very flexible - able to set nearly arbitrary modes from any timing.
35 one-to-one with the fbdev interface, making the driver quite small and
37 * X servers and other applications can use the standard fbdev interface
38 from user mode to talk to the device, without needing to know anything
48 In the future, hopefully fbdev will be enhanced with an small standard
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| /linux/drivers/net/arcnet/ |
| H A D | Kconfig | 1 # SPDX-License-Identifier: GPL-2.0-only
25 tristate "Enable standard ARCNet packet format (RFC 1201)"
29 industry-standard RFC1201 implementations, like the arcether.com
39 software complying with the "old" standard, specifically, the DOS
42 industry-standard RFC1201 implementations, like the arcether.com
49 tristate "Enable raw mode packet interface"
51 ARCnet "raw mode" packet encapsulation, no soft headers. Unlikely
56 tristate "Enable CAP mode packet interface"
58 ARCnet "cap mode" packet encapsulation. Used to get the hardware
71 Cap only listens to protocol 1-8.
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| /linux/sound/drivers/ |
| H A D | Kconfig | 1 # SPDX-License-Identifier: GPL-2.0-only
50 tristate "PC-Speaker support (READ HELP!)"
60 You can compile this as a module which will be called snd-pcsp.
65 pc-speaker a default sound device. Which is likely not
69 options snd-pcsp index=2
71 You don't need this driver if you only want your pc-speaker to beep.
90 will be called snd-dummy.
99 the standard ALSA PCM device. The devices are routed 0->1 and
100 1->0, where first number is the playback PCM device and second
106 timing source using the time shift universal control (+-20%
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| /linux/Documentation/userspace-api/media/v4l/ |
| H A D | vidioc-g-tuner.rst | 1 .. 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
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
70 :stub-columns: 0
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| H A D | ext-ctrls-dv.rst | 1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
3 .. _dv-controls:
15 only exposed on the ``/dev/v4l-subdev*`` device node.
23 Identification Data, :ref:`vesaedid`) and HDCP (High-bandwidth Digital
33 .. _dv-control-id:
47 read-only control is applicable to DVI-D, HDMI and DisplayPort
51 Rx Sense is the detection of pull-ups on the TMDS clock lines. This
56 that pad will be 0. This read-only control is applicable to DVI-D
64 EDIDs, then the bit for that pad will be 0. This read-only control
65 is applicable to VGA, DVI-A/D, HDMI and DisplayPort connectors.
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| H A D | metafmt-d4xx.rst | 1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
3 .. _v4l2-meta-fmt-d4xx:
15 Intel D4xx (D435, D455 and others) cameras include per-frame metadata in their UVC
17 means, that the private D4XX metadata, following the standard UVC header, is
18 organised in blocks. D4XX cameras implement several standard block types,
19 proposed by Microsoft, and several proprietary ones. Supported standard metadata
37 .. flat-table:: D4xx metadata
39 :header-rows: 1
40 :stub-columns: 0
42 * - **Field**
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| /linux/drivers/media/dvb-frontends/drx39xyj/ |
| H A D | drx_driver.h | 2 Copyright (c), 2004-2005,2007-2010 Trident Microsystems, Inc.
59 /*------------------------------------------------------------------------------
61 ------------------------------------------------------------------------------*/
68 * \retval -EIO Initialization failed.
77 * \retval -EIO Termination failed.
97 * \retval -EIO Failure.
98 * \retval -EINVAL Parameter 'wcount' is not zero but parameter
132 #define TUNER_MODE_SUB0 0x0001 /* for sub-mode (e.g. RF-AGC setting) */
133 #define TUNER_MODE_SUB1 0x0002 /* for sub-mode (e.g. RF-AGC setting) */
134 #define TUNER_MODE_SUB2 0x0004 /* for sub-mode (e.g. RF-AGC setting) */
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| /linux/Documentation/sound/cards/ |
| H A D | hdspm.rst | 2 Software Interface ALSA-DSP MADI Driver
5 (translated from German, so no good English ;-),
7 2004 - winfried ritsch
11 the Controls and startup-options are ALSA-Standard and only the
19 ------------------
21 * number of channels -- depends on transmission mode
29 * Single Speed -- 1..64 channels
32 (Note: Choosing the 56channel mode for transmission or as
37 * Double Speed -- 1..32 channels
40 Note: Choosing the 56-channel mode for
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| /linux/Documentation/devicetree/bindings/display/panel/ |
| H A D | panel-mipi-dbi-spi.yaml | 1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/display/panel/panel-mipi-dbi-spi.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Noralf Trønnes <noralf@tronnes.org>
14 in SPI mode.
16 The MIPI Alliance Standard for Display Bus Interface defines the electrical
18 phones. The standard defines 4 display architecture types and this binding is
20 standard and type C is the serial interface.
22 The standard defines the following interface signals for type C:
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| /linux/drivers/dma/ |
| H A D | ste_dma40_ll.h | 1 /* SPDX-License-Identifier: GPL-2.0-only */
3 * Copyright (C) ST-Ericsson SA 2007-2010
4 * Author: Per Friden <per.friden@stericsson.com> for ST-Ericsson SA
5 * Author: Jonas Aaberg <jonas.aberg@stericsson.com> for ST-Ericsson SA
20 #define D40_PHYS_TO_GROUP(phys) ((phys & (D40_GROUP_SIZE - 1)) / 2)
22 /* Most bits of the CFG register are the same in log as in phy mode */
38 /* Standard channel parameters - basic mode (element register) */
44 /* Standard channel parameters - basic mode (Link register) */
50 * 29-bit byte word aligned address of the reload area.
54 /* Standard basic channel logical mode */
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| /linux/drivers/gpu/drm/tests/ |
| H A D | drm_modes_test.c | 1 // SPDX-License-Identifier: GPL-2.0
26 priv->dev = drm_kunit_helper_alloc_device(test); in drm_test_modes_init()
27 KUNIT_ASSERT_NOT_ERR_OR_NULL(test, priv->dev); in drm_test_modes_init()
29 priv->drm = __drm_kunit_helper_alloc_drm_device(test, priv->dev, in drm_test_modes_init()
30 sizeof(*priv->drm), 0, in drm_test_modes_init()
32 KUNIT_ASSERT_NOT_ERR_OR_NULL(test, priv->drm); in drm_test_modes_init()
34 test->priv = priv; in drm_test_modes_init()
41 struct drm_test_modes_priv *priv = test->priv; in drm_test_modes_analog_tv_ntsc_480i()
42 struct drm_display_mode *mode; in drm_test_modes_analog_tv_ntsc_480i() local
45 mode = drm_analog_tv_mode(priv->drm, in drm_test_modes_analog_tv_ntsc_480i()
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| /linux/crypto/ |
| H A D | Kconfig | 1 # SPDX-License-Identifier: GPL-2.0
156 cbc(aes), and the support for the crypto self-tests.
178 bool "Enable cryptographic self-tests"
181 Enable the cryptographic self-tests.
183 The cryptographic self-tests run at boot time, or at algorithm
188 - Development and pre-release testing. In this case, also enable
192 - Production kernels, to help prevent buggy drivers from being used
193 and/or meet FIPS 140-3 pre-operational testing requirements. In
197 bool "Enable the full set of cryptographic self-tests"
200 Enable the full set of cryptographic self-tests for each algorithm.
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| /linux/Documentation/admin-guide/media/ |
| H A D | vivid.rst | 1 .. SPDX-License-Identifier: GPL-2.0
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
28 - All possible control types are present
29 - Support for various pixel aspect ratios and video aspect ratios
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| /linux/drivers/usb/typec/ucsi/ |
| H A D | ucsi_huawei_gaokun.c | 1 // SPDX-License-Identifier: GPL-2.0-only
3 * ucsi-huawei-gaokun - A UCSI driver for HUAWEI Matebook E Go
5 * Copyright (C) 2024-2025 Pengyu Luo <mitltlatltl@gmail.com>
8 #include <drm/bridge/aux-bridge.h>
16 #include <linux/platform_data/huawei-gaokun-ec.h>
35 #define GET_IDX(updt) (ffs(updt) - 1)
54 enum gaokun_ucsi_dpam_pan { /* DP Alt Mode Pin Assignments */
56 USBC_DPAM_PAN_A, /* Not supported after USB Type-C Standard v1.0b */
57 USBC_DPAM_PAN_B, /* Not supported after USB Type-C Standard v1.0b */
58 USBC_DPAM_PAN_C, /* USBC_DPAM_PAN_C_REVERSE - 6 */
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| /linux/Documentation/userspace-api/media/drivers/ |
| H A D | aspeed-video.rst | 1 .. SPDX-License-Identifier: GPL-2.0
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
21 stands for JPEG JFIF standard mode; V4L2_PIX_FMT_AJPG stands for ASPEED
22 proprietary mode.
26 `github <https://github.com/AspeedTech-BMC/openbmc/releases/>`__.
28 The ASPEED video driver implements the following driver-specific control:
31 ---------------------------
32 Enable/Disable ASPEED's High quality mode. This is a private control
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| /linux/fs/squashfs/ |
| H A D | Kconfig | 1 # SPDX-License-Identifier: GPL-2.0-only
3 tristate "SquashFS 4.0 - Squashed file system support"
7 Read-Only File System). Squashfs is a highly compressed read-only
16 Squashfs is intended for general read-only filesystem use, for
19 and tools are available from github.com/plougher/squashfs-tools.
70 bool "Select the parallel decompression mode during mount"
79 decompression mode by setting "threads=" during mount.
83 prompt "Select decompression parallel mode at compile time"
88 decompression. Each one exhibits various trade-offs between
97 Traditionally Squashfs has used single-threaded decompression.
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| /linux/drivers/i2c/busses/ |
| H A D | i2c-synquacer.c | 1 // SPDX-License-Identifier: GPL-2.0
56 #define SYNQUACER_I2C_CCR_FM BIT(6) // Speed Mode Select
68 /* STANDARD MODE frequency */
70 DIV_ROUND_UP(DIV_ROUND_UP((rate), I2C_MAX_STANDARD_MODE_FREQ) - 2, 2)
71 /* FAST MODE frequency */
73 DIV_ROUND_UP((DIV_ROUND_UP((rate), I2C_MAX_FAST_MODE_FREQ) - 2) * 2, 3)
76 /* calculate the value of CS bits in CCR register on standard mode */
78 ((SYNQUACER_I2C_CLK_MASTER_STD(rate) - 65) \
81 /* calculate the value of CS bits in CSR register on standard mode */
84 /* calculate the value of CS bits in CCR register on fast mode */
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| /linux/Documentation/misc-devices/ |
| H A D | oxsemi-tornado.rst | 1 .. SPDX-License-Identifier: GPL-2.0
12 value from 1 to 63.875 in increments of 0.125, and then the usual 16-bit
21 for the usual 16-bit divisor is 115313.653, which is close enough to the
29 the prescaler the enhanced mode has to be explicitly enabled though, by
30 setting bit 4 of the EFR. In that mode setting bit 7 in the MCR enables
38 obtained, with either exact or highly-accurate actual bit rates for
39 standard and many non-standard rates.
41 Here are the figures for the standard and some non-standard baud rates
56 r: 3686400, a: 3676470.59, d: -0.2694%, tcr: 8, cpr: 2.125, div: 1
57 r: 3500000, a: 3496503.50, d: -0.0999%, tcr: 13, cpr: 1.375, div: 1
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