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/linux/drivers/usb/gadget/legacy/
H A DKconfig1 # SPDX-License-Identifier: GPL-2.0
7 # NOTE: Gadget support ** DOES NOT ** depend on host-side CONFIG_USB !!
9 # - Host systems (like PCs) need CONFIG_USB (with "A" jacks).
10 # - Peripherals (like PDAs) need CONFIG_USB_GADGET (with "B" jacks).
11 # - Some systems have both kinds of controllers.
13 # With help from a special transceiver and a "Mini-AB" jack, systems with
14 # both kinds of controller can also support "USB On-the-Go" (CONFIG_USB_OTG).
23 # Gadget drivers are hardware-neutral, or "platform independent",
32 # gadget configuration. In the device model, each option contains
44 Gadget Zero is a two-configuration device. It either sinks and
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/linux/Documentation/usb/
H A Dmass-storage.rst9 appearing to the host as a disk or a CD-ROM drive. It supports
12 to read-only, and gadget can indicate that it is removable and/or
13 CD-ROM (the latter implies read-only access).
15 Its requirements are modest; only a bulk-in and a bulk-out endpoint
17 Support is included for full-speed, high-speed and SuperSpeed
20 Note that the driver is slightly non-portable in that it assumes
21 a single memory/DMA buffer will be usable for bulk-in and bulk-out
29 (which is no longer included in Linux). It will talk only briefly
30 about how to use MSF within composite gadgets.
38 - file=filename[,filename...]
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H A Dgadget_multi.rst2 Multifunction Composite Gadget
8 The Multifunction Composite Gadget (or g_multi) is a composite gadget
9 that makes extensive use of the composite framework to provide
12 In its standard configuration it provides a single USB configuration
18 have two configurations -- one with RNDIS and another with CDC ECM[3].
20 Please note that if you use non-standard configuration (that is enable
26 To make use of the gadget one needs to make it work on host side --
31 ------------------
33 Since the gadget uses standard composite framework and appears as such
38 This is also true for two configuration set-up with RNDIS
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H A Dfunctionfs.rst8 From kernel point of view it is just a composite function with some
12 that kernel level composite functions provide when they are added to
15 This in particular means that the composite initialisation functions
16 may not be in init section (ie. may not use the __init tag).
25 them as needed also handling situation when numbers differ in
28 For more information about FunctionFS descriptors see :doc:`functionfs-desc`
40 What I also want to mention is that the FunctionFS is designed in such
41 a way that it is possible to mount it several times so in the end
51 $ mkdir /dev/ffs-mtp && mount -t functionfs mtp /dev/ffs-mtp
52 $ ( cd /dev/ffs-mtp && mtp-daemon ) &
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/linux/drivers/clk/rockchip/
H A Dclk-rk3368.c1 // SPDX-License-Identifier: GPL-2.0-or-later
6 #include <linux/clk-provider.h>
11 #include <dt-bindings/clock/rk3368-cru.h>
200 /* cluster_b: aclkm in clksel0, rest in clksel1 */
210 /* cluster_l: aclkm in clksel2, rest in clksel3 */
276 * Clock-Architecture Diagram 2
320 COMPOSITE(0, "aclk_cci_pre", mux_pll_src_cpll_gpll_usb_npll_p, CLK_IGNORE_UNUSED,
356 COMPOSITE(0, "fclk_mcu_src", mux_pll_src_cpll_gpll_p, CLK_IGNORE_UNUSED,
360 * stclk_mcu is listed as child of fclk_mcu_src in diagram 5,
361 * but stclk_mcu has an additional own divider in diagram 2
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H A Dclk-rk3399.c1 // SPDX-License-Identifier: GPL-2.0-or-later
4 * Author: Xing Zheng <zhengxing@rock-chips.com>
7 #include <linux/clk-provider.h>
15 #include <dt-bindings/clock/rk3399-cru.h>
337 /* cluster_l: aclkm in clksel0, rest in clksel1 */
347 /* cluster_b: aclkm in clksel2, rest in clksel3 */
402 * CRU Clock-Architecture
425 COMPOSITE(ACLK_USB3, "aclk_usb3", mux_pll_src_cpll_gpll_npll_p, 0,
444 COMPOSITE(SCLK_USB3OTG0_SUSPEND, "clk_usb3otg0_suspend", mux_pll_p, 0,
448 COMPOSITE(SCLK_USB3OTG1_SUSPEND, "clk_usb3otg1_suspend", mux_pll_p, 0,
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H A Dclk-rk3288.c1 // SPDX-License-Identifier: GPL-2.0-or-later
7 #include <linux/clk-provider.h>
12 #include <dt-bindings/clock/rk3288-cru.h>
284 * Clock-Architecture Diagram 1
360 COMPOSITE(0, "i2s_src", mux_pll_src_cpll_gpll_p, 0,
411 * Clock-Architecture Diagram 2
414 COMPOSITE(0, "aclk_vepu", mux_pll_src_cpll_gpll_usb480m_p, 0,
417 COMPOSITE(0, "aclk_vdpu", mux_pll_src_cpll_gpll_usb480m_p, 0,
431 COMPOSITE(0, "aclk_vio0", mux_pll_src_cpll_gpll_usb480m_p, CLK_IGNORE_UNUSED,
434 COMPOSITE(0, "aclk_vio1", mux_pll_src_cpll_gpll_usb480m_p, CLK_IGNORE_UNUSED,
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/linux/drivers/usb/gadget/
H A Dconfigfs.c1 // SPDX-License-Identifier: GPL-2.0
8 #include <linux/usb/composite.h>
26 return -EINVAL; in check_user_usb_string()
28 stringtab_dev->language = num; in check_user_usb_string()
50 struct usb_composite_driver composite; member
86 return container_of(cfg->c.cdev, struct gadget_info, cdev); in cfg_to_gadget_info()
121 return -EOVERFLOW; in usb_string_copy()
123 return -EINVAL; in usb_string_copy()
130 return -ENOMEM; in usb_string_copy()
133 if (str[ret - 1] == '\n') in usb_string_copy()
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H A Dcomposite.c1 // SPDX-License-Identifier: GPL-2.0+
3 * composite.c - infrastructure for Composite USB Gadgets
5 * Copyright (C) 2006-2008 David Brownell
19 #include <linux/usb/composite.h>
27 * struct usb_os_string - represents OS String to be reported by a gadget
43 * The code in this file is utility code, used to build a gadget driver
46 * with the relevant device-wide data.
52 return (struct usb_gadget_strings **)uc->stash; in get_containers_gs()
56 * function_descriptors() - get function descriptors for speed
75 descriptors = f->ssp_descriptors; in function_descriptors()
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H A DKconfig1 # SPDX-License-Identifier: GPL-2.0
7 # NOTE: Gadget support ** DOES NOT ** depend on host-side CONFIG_USB !!
9 # - Host systems (like PCs) need CONFIG_USB (with "A" jacks).
10 # - Peripherals (like PDAs) need CONFIG_USB_GADGET (with "B" jacks).
11 # - Some systems have both kinds of controllers.
13 # With help from a special transceiver and a "Mini-AB" jack, systems with
14 # both kinds of controller can also support "USB On-the-Go" (CONFIG_USB_OTG).
25 you can't connect a "to-the-host" connector to a peripheral.
27 Linux can run in the host, or in the peripheral. In both cases
30 or are integrated with the CPU in a microcontroller. The more
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/linux/include/linux/usb/
H A Dcomposite.h1 // SPDX-License-Identifier: GPL-2.0+
3 * composite.h -- framework for usb gadgets which are composite devices
5 * Copyright (C) 2006-2008 David Brownell
13 * making it easier to build (a) Composite devices, supporting multiple
14 * functions within any single configuration, and (b) Multi-configuration
19 * link and mass storage functions is a composite device. Those functions
20 * might alternatively be packaged in individual configurations, but in
21 * the composite model the host can use both functions at the same time.
39 * NOTE: USB_GADGET_DELAYED_STATUS must not be used in UDC drivers: they
40 * must delay completing the status stage for 0-length control transfers
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/linux/Documentation/devicetree/bindings/clock/ti/
H A Dti,mux-clock.yaml1 # SPDX-License-Identifier: GPL-2.0-only
3 ---
4 $id: http://devicetree.org/schemas/clock/ti/ti,mux-clock.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Tero Kristo <kristo@kernel.org>
13 This clock assumes a register-mapped multiplexer with multiple inpt clock
17 By default the "clocks" property lists the parents in the same order
22 Results in programming the register as follows:
31 "index-starts-at-one" modified the scheme as follows:
39 the number of bits to shift the control field in the register can be
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/linux/include/media/i2c/
H A Dupd64083.h1 /* SPDX-License-Identifier: GPL-2.0-or-later */
3 * upd6408x - NEC Electronics 3-Dimensional Y/C separation input defines
11 /* There are two bits of information that the driver needs in order
15 The first two operating modes expect a composite signal on the Y input,
18 Normally YCS_MODE is used for tuner and composite inputs, and the
19 YCNR mode is used for S-Video inputs.
21 The external Y-ADC is selected when the composite input comes from a
23 the input is a S-Video signal, then the internal Y-ADC input should
33 /* Note: the following two modes cannot be used in combination with the
34 external Y-ADC. */
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/linux/Documentation/driver-api/media/drivers/
H A Dzoran.rst1 .. SPDX-License-Identifier: GPL-2.0
8 website: http://mjpeg.sourceforge.net/driver-zoran/
12 --------------------------
15 ------------------------
28 Drivers to use: videodev, i2c-core, i2c-algo-bit,
31 Inputs/outputs: Composite and S-video
45 Drivers to use: videodev, i2c-core, i2c-algo-bit,
49 Six physical inputs. 1-6 are composite,
50 1-2, 3-4, 5-6 doubles as S-video,
51 1-3 triples as component.
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/linux/drivers/media/pci/ivtv/
H A Divtv-routing.c1 // SPDX-License-Identifier: GPL-2.0-or-later
3 Audio/video-routing-related ivtv functions.
4 Copyright (C) 2003-2004 Kevin Thayer <nufan_wfk at yahoo.com>
5 Copyright (C) 2005-2007 Hans Verkuil <hverkuil@xs4all.nl>
9 #include "ivtv-driver.h"
10 #include "ivtv-i2c.h"
11 #include "ivtv-cards.h"
12 #include "ivtv-gpio.h"
13 #include "ivtv-routing.h"
15 #include <media/drv-intf/msp3400.h>
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/linux/drivers/media/platform/xilinx/
H A Dxilinx-dma.h1 /* SPDX-License-Identifier: GPL-2.0 */
5 * Copyright (C) 2013-2015 Ideas on Board
6 * Copyright (C) 2013-2015 Xilinx, Inc.
20 #include <media/media-entity.h>
21 #include <media/v4l2-dev.h>
22 #include <media/videobuf2-v4l2.h>
29 * struct xvip_pipeline - Xilinx Video IP pipeline structure
34 * @num_dmas: number of DMA engines in the pipeline
59 * struct xvip_dma - Video DMA channel
60 * @list: list entry in a composite device dmas list
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/linux/drivers/video/fbdev/
H A Dfm2fb.c2 * linux/drivers/video/fm2fb.c -- BSC FrameMaster II/Rainbow II frame buffer
5 * Copyright (C) 1998 Steffen A. Mork (linux-dev@morknet.de)
13 * License. See the file COPYING in the main directory of this archive for
35 * - PAL/NTSC
36 * - interlaced/non interlaced
37 * - composite sync/sync/sync over green
40 * - 768x576 (PAL)
41 * - 768x480 (NTSC)
44 * fixed line width. In case of maximal resolution the frame
49 * not assembled with memory for the alpha channel. In this
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/linux/Documentation/driver-api/usb/
H A Dgadget.rst11 This document presents a Linux-USB "Gadget" kernel mode API, for use
17 - Supports USB 2.0, for high speed devices which can stream data at
20 - Handles devices with dozens of endpoints just as well as ones with
21 just two fixed-function ones. Gadget drivers can be written so
24 - Flexible enough to expose more complex USB device capabilities such
25 as multiple configurations, multiple interfaces, composite devices,
28 - USB "On-The-Go" (OTG) support, in conjunction with updates to the
29 Linux-USB host side.
31 - Sharing data structures and API models with the Linux-USB host side
32 API. This helps the OTG support, and looks forward to more-symmetric
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/linux/Documentation/devicetree/bindings/display/connector/
H A Danalog-tv-connector.yaml1 # SPDX-License-Identifier: GPL-2.0-only
3 ---
4 $id: http://devicetree.org/schemas/display/connector/analog-tv-connector.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Laurent Pinchart <Laurent.pinchart@ideasonboard.com>
15 - composite-video-connector
16 - svideo-connector
20 sdtv-standards:
24 defined in include/dt-bindings/display/sdtv-standards.h.
32 - compatible
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/linux/drivers/media/pci/zoran/
H A Dzoran_card.c1 // SPDX-License-Identifier: GPL-2.0-or-later
7 * This part handles card-specific data and detection
18 #include <linux/i2c-algo-bit.h>
25 #include <media/v4l2-common.h>
38 static int card[BUZ_MAX] = { [0 ... (BUZ_MAX - 1)] = -1 };
44 static unsigned int default_input; /* default 0 = Composite, 1 = S-Video */
47 "Default input (0=Composite, 1=S-Video, 2=Internal)");
58 /* /dev/videoN, -1 for autodetect */
59 static int video_nr[BUZ_MAX] = { [0 ... (BUZ_MAX - 1)] = -1 };
61 MODULE_PARM_DESC(video_nr, "Video device number (-1=Auto)");
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/linux/scripts/
H A Dmake_fit.py2 # SPDX-License-Identifier: GPL-2.0+
11 make_fit.py -A arm64 -n 'Linux-6.6' -O linux
12 -o arch/arm64/boot/image.fit -k /tmp/kern/arch/arm64/boot/image.itk
13 @arch/arm64/boot/dts/dtbs-list -E -c gzip
16 either specified individually or listed in a file (with an '@' prefix).
18 Use -E to generate an external FIT (where the data is placed after the
22 Use -c to compress the data, using bzip2, gzip, lz4, lzma, lzo and
25 Use -D to decompose "composite" DTBs into their base components and
31 as U-Boot, Linuxboot, Tianocore, etc.
47 # Tool extension and the name of the command-line tools
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/linux/drivers/media/usb/pvrusb2/
H A Dpvrusb2-cx2584x-v4l.c1 // SPDX-License-Identifier: GPL-2.0-only
11 cx2584x, in kernels 2.6.16 or newer.
15 #include "pvrusb2-cx2584x-v4l.h"
18 #include "pvrusb2-hdw-internal.h"
19 #include "pvrusb2-debug.h"
20 #include <media/drv-intf/cx25840.h>
22 #include <media/v4l2-common.h>
41 [PVR2_CVAL_INPUT_RADIO] = { /* Treat the same as composite */
67 /* line-in is used for radio and composite. A GPIO is
138 if (hdw->input_dirty || hdw->force_dirty) { in pvr2_cx25840_subdev_update()
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/linux/drivers/media/usb/go7007/
H A Dgo7007-usb.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * Copyright (C) 2005-2006 Micronas USA Inc.
22 #include "go7007-priv.h"
29 /* #define GO7007_I2C_DEBUG */ /* for debugging the EZ-USB I2C adapter */
36 * Pipes on EZ-USB interface:
37 * 0 snd - Control
38 * 0 rcv - Control
39 * 2 snd - Download firmware (control)
40 * 4 rcv - Read Interrupt (interrupt)
41 * 6 rcv - Read Video (bulk)
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/linux/drivers/gpu/drm/i915/gem/
H A Di915_gem_busy.c2 * SPDX-License-Identifier: MIT
4 * Copyright © 2014-2016 Intel Corporation
7 #include <linux/dma-fence-array.h>
31 * last_read - hence we always set both read and write busy for in __busy_write_id()
54 * 1. A composite fence (dma_fence_array) constructed of i915 requests in __busy_set_if_active()
55 * created during a parallel submission. In this case we deconstruct the in __busy_set_if_active()
56 * composite fence into individual i915 requests and check the status of in __busy_set_if_active()
63 struct dma_fence **child = array->fences; in __busy_set_if_active()
64 unsigned int nchild = array->num_fences; in __busy_set_if_active()
72 &current_fence->flags)) { in __busy_set_if_active()
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/linux/Documentation/devicetree/bindings/media/i2c/
H A Dtvp5150.txt4 (and also SECAM in the TVP5151 case) video signals to either 8-bit 4:2:2 YUV
5 with discrete syncs or 8-bit ITU-R BT.656 with embedded syncs output formats.
9 - compatible: Value must be "ti,tvp5150".
10 - reg: I2C slave address.
14 - pdn-gpios: Phandle for the GPIO connected to the PDN pin, if any.
15 - reset-gpios: Phandle for the GPIO connected to the RESETB pin, if any.
18 and output port, in accordance with the video interface bindings defined in
19 Documentation/devicetree/bindings/media/video-interfaces.txt. The port nodes
23 --------------------------------------
26 Y-OUT src 2
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