path: root/Documentation/usb
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2021-05-16Merge tag 'usb-5.13-rc2' of ↵Linus Torvalds
git:// Pull USB fixes from Greg KH: "Here are some small USB fixes for 5.13-rc2. They consist of a number of resolutions for reported issues: - typec fixes for found problems - xhci fixes and quirk additions - dwc3 driver fixes - minor fixes found by Coverity - cdc-wdm fixes for reported problems All of these have been in linux-next for a few days with no reported issues" * tag 'usb-5.13-rc2' of git:// (28 commits) usb: core: hub: fix race condition about TRSMRCY of resume usb: typec: tcpm: Fix SINK_DISCOVERY current limit for Rp-default xhci: Add reset resume quirk for AMD xhci controller. usb: xhci: Increase timeout for HC halt xhci: Do not use GFP_KERNEL in (potentially) atomic context xhci: Fix giving back cancelled URBs even if halted endpoint can't reset xhci-pci: Allow host runtime PM as default for Intel Alder Lake xHCI usb: musb: Fix an error message usb: typec: tcpm: Fix wrong handling for Not_Supported in VDM AMS usb: typec: tcpm: Send DISCOVER_IDENTITY from dedicated work usb: typec: ucsi: Retrieve all the PDOs instead of just the first 4 usb: fotg210-hcd: Fix an error message docs: usb: function: Modify path name usb: dwc3: omap: improve extcon initialization usb: typec: ucsi: Put fwnode in any case during ->probe() usb: typec: tcpm: Fix wrong handling in GET_SINK_CAP usb: dwc2: Remove obsolete MODULE_ constants from platform.c usb: dwc3: imx8mp: fix error return code in dwc3_imx8mp_probe() usb: dwc3: imx8mp: detect dwc3 core node via compatible string usb: dwc3: gadget: Return success always for kick transfer in ep queue ...
2021-05-10Documentation: drop optional BOMsRandy Dunlap
A few of the Documentation .rst files begin with a Unicode byte order mark (BOM). The BOM may signify endianess for 16-bit or 32-bit encodings or indicate that the text stream is indeed Unicode. We don't need it for either of those uses. It may also interfere with (confuse) some software. Since we don't need it and its use is optional, just delete the uses of it in Documentation/. Signed-off-by: Randy Dunlap <> Reviewed-by: Matthew Wilcox (Oracle) <> Reviewed-by: Greg Kroah-Hartman <> Cc: Mauro Carvalho Chehab <> Link: Signed-off-by: Jonathan Corbet <>
2021-05-10docs: usb: function: Modify path nameWei Ming Chen
Original path does not exists, so changed to "Documentation/ABI/testing/configfs-usb-gadget" Signed-off-by: Wei Ming Chen <> Link: Signed-off-by: Greg Kroah-Hartman <>
2021-04-09docs: usbip: Fix major fields and descriptions in protocolHongren Zheng (Zenithal)
The old document for usbip protocol is misleading and hard to read: * Some fields in header are incorrect * Explanation of some fields are unclear or even wrong * Padding of header (namely all headers have the same length) is not explicitly pointed out, which is crucial for stream protocol like TCP Major changes: * Document the correct field as described in the codebase. * Document the padding in usbip headers. This is crucial for TCP stream hence these padding should be explicitly point out. In code these padding are implemented by a union of all headers. * Fix two FIXME related to usbip unlink and Document the behavior of unlink in different situation. * Clarify some field with more accurate explanation, like those fields associated with URB. Some constraints are extracted from code. * Delete specific transfer_flag doc in usbip as it should be documented by the URB doc in Documentation/driver-api/usb/URB.rst * Add data captured from wire as example Version change: From "PRELIMINARY DRAFT, MAY CONTAIN MISTAKES, 28 Jun 2011" To "Version 1, 31 Mar 2021" Co-developed-by: Alexandre Demers <> Reviewed-by: Randy Dunlap <> Reviewed-by: Shuah Khan <> Signed-off-by: Hongren Zheng <> Link: Signed-off-by: Greg Kroah-Hartman <>
2021-01-26usb: raw-gadget: update documentation and KconfigAndrey Konovalov
Update Raw Gadget documentation and Kconfig. Make the description more precise and clear, fix typos and grammar mistakes, and do other cleanups. Signed-off-by: Andrey Konovalov <> Link: Signed-off-by: Greg Kroah-Hartman <>
2021-01-15usb: gadget: u_ether: support configuring interface names.Lorenzo Colitti
This patch allows the administrator to configure the interface name of a function using u_ether (e.g., eem, ncm, rndis). Currently, all such interfaces, regardless of function type, are always called usb0, usb1, etc. This makes it very cumbersome to use more than one such type at a time, because userspace cannnot easily tell the interfaces apart and apply the right configuration to each one. Interface renaming in userspace based on driver doesn't help, because the interfaces all have the same driver. Without this patch, doing this require hacks/workarounds such as setting fixed MAC addresses on the functions, and then renaming by MAC address, or scraping configfs after each interface is created to find out what it is. Setting the interface name is done by writing to the same "ifname" configfs attribute that reports the interface name after the function is bound. The write must contain an interface pattern such as "usb%d" (which will cause the net core to pick the next available interface name starting with "usb"). This patch does not allow writing an exact interface name (as opposed to a pattern) because if the interface already exists at bind time, the bind will fail and the whole gadget will fail to activate. This could be allowed in a future patch. For compatibility with current userspace, when reading an ifname that has not currently been set, the result is still "(unnamed net_device)". Once a write to ifname happens, then reading ifname will return whatever was last written. Tested by configuring an rndis function and an ncm function on the same gadget, and writing "rndis%d" to ifname on the rndis function and "ncm%d" to ifname on the ncm function. When the gadget was bound, the rndis interface was rndis0 and the ncm interface was ncm0. Signed-off-by: Lorenzo Colitti <> Link: Signed-off-by: Greg Kroah-Hartman <>
2020-07-21USB: Replace HTTP links with HTTPS onesAlexander A. Klimov
Rationale: Reduces attack surface on kernel devs opening the links for MITM as HTTPS traffic is much harder to manipulate. Deterministic algorithm: For each file: If not .svg: For each line: If doesn't contain `\bxmlns\b`: For each link, `\bhttp://[^# \t\r\n]*(?:\w|/)`: If neither `\bgnu\.org/license`, nor `\bmozilla\.org/MPL\b`: If both the HTTP and HTTPS versions return 200 OK and serve the same content: Replace HTTP with HTTPS. Signed-off-by: Alexander A. Klimov <> Link: Signed-off-by: Greg Kroah-Hartman <>
2020-06-01Merge tag 'docs-5.8' of git:// Torvalds
Pull documentation updates from Jonathan Corbet: "A fair amount of stuff this time around, dominated by yet another massive set from Mauro toward the completion of the RST conversion. I *really* hope we are getting close to the end of this. Meanwhile, those patches reach pretty far afield to update document references around the tree; there should be no actual code changes there. There will be, alas, more of the usual trivial merge conflicts. Beyond that we have more translations, improvements to the sphinx scripting, a number of additions to the sysctl documentation, and lots of fixes" * tag 'docs-5.8' of git:// (130 commits) Documentation: fixes to the maintainer-entry-profile template zswap: docs/vm: Fix typo accept_threshold_percent in zswap.rst tracing: Fix events.rst section numbering docs: acpi: fix old http link and improve document format docs: filesystems: add info about efivars content Documentation: LSM: Correct the basic LSM description mailmap: change email for Ricardo Ribalda docs: sysctl/kernel: document unaligned controls Documentation: admin-guide: update bug-hunting.rst docs: sysctl/kernel: document ngroups_max nvdimm: fixes to maintainter-entry-profile Documentation/features: Correct RISC-V kprobes support entry Documentation/features: Refresh the arch support status files Revert "docs: sysctl/kernel: document ngroups_max" docs: move locking-specific documents to locking/ docs: move digsig docs to the security book docs: move the kref doc into the core-api book docs: add IRQ documentation at the core-api book docs: debugging-via-ohci1394.txt: add it to the core-api book docs: fix references for ipmi.rst file ...
2020-05-14usb: raw-gadget: documentation updatesAndrey Konovalov
Mention the issue with fixed UDC addresses. Links external examples and test suite. Add more implmenetation details and potential improvements. Signed-off-by: Andrey Konovalov <> Signed-off-by: Felipe Balbi <>
2020-05-14usb: raw-gadget: support stalling/halting/wedging endpointsAndrey Konovalov
Raw Gadget is currently unable to stall/halt/wedge gadget endpoints, which is required for proper emulation of certain USB classes. This patch adds a few more ioctls: - USB_RAW_IOCTL_EP0_STALL allows to stall control endpoint #0 when there's a pending setup request for it. - USB_RAW_IOCTL_SET/CLEAR_HALT/WEDGE allow to set/clear halt/wedge status on non-control non-isochronous endpoints. Fixes: f2c2e717642c ("usb: gadget: add raw-gadget interface") Signed-off-by: Andrey Konovalov <> Signed-off-by: Felipe Balbi <>
2020-05-14usb: raw-gadget: fix gadget endpoint selectionAndrey Konovalov
Currently automatic gadget endpoint selection based on required features doesn't work. Raw Gadget tries iterating over the list of available endpoints and finding one that has the right direction and transfer type. Unfortunately selecting arbitrary gadget endpoints (even if they satisfy feature requirements) doesn't work, as (depending on the UDC driver) they might have fixed addresses, and one also needs to provide matching endpoint addresses in the descriptors sent to the host. The composite framework deals with this by assigning endpoint addresses in usb_ep_autoconfig() before enumeration starts. This approach won't work with Raw Gadget as the endpoints are supposed to be enabled after a set_configuration/set_interface request from the host, so it's too late to patch the endpoint descriptors that had already been sent to the host. For Raw Gadget we take another approach. Similarly to GadgetFS, we allow the user to make the decision as to which gadget endpoints to use. This patch adds another Raw Gadget ioctl USB_RAW_IOCTL_EPS_INFO that exposes information about all non-control endpoints that a currently connected UDC has. This information includes endpoints addresses, as well as their capabilities and limits to allow the user to choose the most fitting gadget endpoint. The USB_RAW_IOCTL_EP_ENABLE ioctl is updated to use the proper endpoint validation routine usb_gadget_ep_match_desc(). These changes affect the portability of the gadgets that use Raw Gadget when running on different UDCs. Nevertheless, as long as the user relies on the information provided by USB_RAW_IOCTL_EPS_INFO to dynamically choose endpoint addresses, UDC-agnostic gadgets can still be written with Raw Gadget. Fixes: f2c2e717642c ("usb: gadget: add raw-gadget interface") Signed-off-by: Andrey Konovalov <> Signed-off-by: Felipe Balbi <>
2020-05-05docs: filesystems: convert configfs.txt to ReSTMauro Carvalho Chehab
- Add a SPDX header; - Adjust document and section titles; - Use copyright symbol; - Some whitespace fixes and new line breaks; - Mark literal blocks as such; - Add it to filesystems/index.rst. Also, as this file is alone on its own dir, and it doesn't seem too likely that other documents will follow it, let's move it to the filesystems/ root documentation dir. Signed-off-by: Mauro Carvalho Chehab <> Link: Signed-off-by: Jonathan Corbet <>
2020-03-15usb: gadget: add raw-gadget interfaceAndrey Konovalov
USB Raw Gadget is a kernel module that provides a userspace interface for the USB Gadget subsystem. Essentially it allows to emulate USB devices from userspace. Enabled with CONFIG_USB_RAW_GADGET. Raw Gadget is currently a strictly debugging feature and shouldn't be used in production. Raw Gadget is similar to GadgetFS, but provides a more low-level and direct access to the USB Gadget layer for the userspace. The key differences are: 1. Every USB request is passed to the userspace to get a response, while GadgetFS responds to some USB requests internally based on the provided descriptors. However note, that the UDC driver might respond to some requests on its own and never forward them to the Gadget layer. 2. GadgetFS performs some sanity checks on the provided USB descriptors, while Raw Gadget allows you to provide arbitrary data as responses to USB requests. 3. Raw Gadget provides a way to select a UDC device/driver to bind to, while GadgetFS currently binds to the first available UDC. 4. Raw Gadget uses predictable endpoint names (handles) across different UDCs (as long as UDCs have enough endpoints of each required transfer type). 5. Raw Gadget has ioctl-based interface instead of a filesystem-based one. Reviewed-by: Greg Kroah-Hartman <> Signed-off-by: Andrey Konovalov <> Signed-off-by: Felipe Balbi <>
2020-01-28docs: usb: remove some broken referencesMauro Carvalho Chehab
It seems that some files were removed from USB documentation. Update the links accordingly. Signed-off-by: Mauro Carvalho Chehab <> Link: Signed-off-by: Jonathan Corbet <>
2019-10-04USB: rio500: Remove Rio 500 kernel driverBastien Nocera
The Rio500 kernel driver has not been used by Rio500 owners since 2001 not long after the rio500 project added support for a user-space USB stack through the very first versions of usbdevfs and then libusb. Support for the kernel driver was removed from the upstream utilities in 2008: Cc: Cesar Miquel <> Signed-off-by: Bastien Nocera <> Cc: stable <> Link: Signed-off-by: Greg Kroah-Hartman <>
2019-08-08USB: Move wusbcore and UWB to staging as it is obsoleteGreg Kroah-Hartman
The UWB and wusbcore code is long obsolete, so let us just move the code out of the real part of the kernel and into the drivers/staging/ location with plans to remove it entirely in a few releases. Link: Signed-off-by: Greg Kroah-Hartman <>
2019-06-20docs: usb: rename files to .rst and add them to drivers-apiMauro Carvalho Chehab
While there are a mix of things here, most of the stuff were written from Kernel developer's PoV. So, add them to the driver-api book. A follow up for this patch would be to move documents from there that are specific to sysadmins, adding them to the admin-guide. Signed-off-by: Mauro Carvalho Chehab <> Acked-by: Johan Hovold <> Acked-by: Felipe Balbi <> Signed-off-by: Greg Kroah-Hartman <>
2019-05-21USB: rio500: update DocumentationOliver Neukum
Added the newly added limit and updated the text a bit Signed-off-by: Oliver Neukum <> Signed-off-by: Greg Kroah-Hartman <>
2019-04-16docs: usb: convert documents to ReSTMauro Carvalho Chehab
Convert USB documents to ReST, in order to prepare for adding it to the kernel API book, as most of the stuff there are driver or subsystem-related. Signed-off-by: Mauro Carvalho Chehab <> Signed-off-by: Greg Kroah-Hartman <>
2019-02-22usb: core: add option of only authorizing internal devicesDmitry Torokhov
On Chrome OS we want to use USBguard to potentially limit access to USB devices based on policy. We however to do not want to wait for userspace to come up before initializing fixed USB devices to not regress our boot times. This patch adds option to instruct the kernel to only authorize devices connected to the internal ports. Previously we could either authorize all or none (or, by default, we'd only authorize wired devices). The behavior is controlled via usbcore.authorized_default command line option. Signed-off-by: Dmitry Torokhov <> Signed-off-by: Greg Kroah-Hartman <>
2018-11-26Documentation/usb: Fix typoThiébaud Weksteen
Fix small typo authroized -> authorized in the authorization page. Signed-off-by: Thiébaud Weksteen <> Signed-off-by: Greg Kroah-Hartman <>
2018-07-20Merge tag 'usb-serial-4.19-rc1' of ↵Greg Kroah-Hartman into usb-next Johan writes: USB-serial updates for v4.19-rc1 Here are the USB-serial updates for 4.19-rc1, including: - gpio support for CP2102N devices - improved line-speed handling for cp210x - conversion to spin_lock_irqsave() in completion handlers - dropped kl5kusb105 support from the kl5kusb105 driver (sic!) Included are also various lower-priority fixes and clean ups. All but the final commit have been in linux-next, and with no reported issues. Signed-off-by: Johan Hovold <>
2018-07-11USB: serial: clean up kl5kusb105 documentationJohan Hovold
Remove references to long-gone kl5kusb105 module parameters in the usb-serial documentation. Signed-off-by: Johan Hovold <>
2018-06-18doc: usb: Fix typo in gadget_configfs documentationJaejoong Kim
Fix the directory name from 'configfs' to 'configs'. Signed-off-by: Jaejoong Kim <> Signed-off-by: Felipe Balbi <>
2018-01-15Merge 4.15-rc8 into usb-nextGreg Kroah-Hartman
We want the USB fixes in here as well for merge issues. Signed-off-by: Greg Kroah-Hartman <>
2018-01-11Documentation: usb: fix typo in UVC gadgetfs config commandBin Liu
This seems to be a copy&paste error. With the fix the uvc gadget now can be created by following the instrucitons. Signed-off-by: Bin Liu <> Signed-off-by: Greg Kroah-Hartman <>
2017-12-12USB: remove the URB_NO_FSBR flagAlan Stern
The URB_NO_FSBR flag has never really been used. It was introduced as a potential way for UHCI to minimize PCI bus usage (by not attempting full-speed bulk and control transfers more than once per frame), but the flag was not set by any drivers. There's no point in keeping it around. This patch simplifies the API by removing it. Unfortunately, it does have to be kept as part of the usbfs ABI, but at least we can document in include/uapi/linux/usbdevice_fs.h that it doesn't do anything. Signed-off-by: Alan Stern <> Acked-by: Shuah Khan <> Signed-off-by: Greg Kroah-Hartman <>
2017-12-08doc: usb: chipidea: Fix typo in 'enumerate'Fabio Estevam
Fix the spelling of 'enumerate' in this document. Signed-off-by: Fabio Estevam <> Signed-off-by: Greg Kroah-Hartman <>
2017-10-12Documentation: fix usb related doc refsTom Saeger
Update ref to usb proc_usb_info.txt. Signed-off-by: Tom Saeger <> Signed-off-by: Jonathan Corbet <>
2017-06-19usb: gadget: add f_uac1 variant based on a new u_audio apiRuslan Bilovol
This patch adds a new function 'f_uac1' (f_uac1 with virtual "ALSA card") that uses recently created u_audio API. Comparing to legacy f_uac1 function implementation it doesn't require any real Audio codec to be present on the device. In f_uac1 audio streams are simply sinked to and sourced from a virtual ALSA sound card created using u_audio API. Legacy f_uac1 approach is to write audio samples directly to existing ALSA sound card f_uac1 approach is more generic/flexible one - create an ALSA sound card that represents USB Audio function and allows to be used by userspace application that may choose to do whatever it wants with the data received from the USB Host and choose to provide whatever it wants as audio data to the USB Host. f_uac1 also has capture support (gadget->host) thanks to easy implementation via u_audio. By default, capture interface has 48000kHz/2ch configuration, same as playback channel has. f_uac1 descriptors naming convention uses f_uac2 driver naming convention that makes it more common and meaningful. Comparing to f_uac1_legacy, the f_uac1 doesn't have volume/mute functionality. This is because the f_uac1 volume/mute feature unit was dummy implementation since that driver creation (2009) and never had any real volume control or mute functionality, so there is no any difference here. Since f_uac1 functionality, exposed interface to userspace (virtual ALSA card), input parameters are so different comparing to f_uac1_legacy, that there is no any reason to keep them in the same file/module, and separate function was created. g_audio can be built using one of existing UAC functions (f_uac1, f_uac1_legacy or f_uac2) Signed-off-by: Ruslan Bilovol <> Signed-off-by: Felipe Balbi <>
2017-06-19usb: gadget: function: make current f_uac1 implementation legacyRuslan Bilovol
Before introducing new f_uac1 function (with virtual ALSA card) make current implementation legacy. This includes renaming of existing files, some variables, config options and documentation Signed-off-by: Ruslan Bilovol <> Signed-off-by: Felipe Balbi <>
2017-06-02usb: move ReST documentation to Documentation/driver-api/usb/Felipe Balbi
This is where all other USB ReST documentation has moved to. Signed-off-by: Felipe Balbi <>
2017-05-04Merge tag 'usb-4.12-rc1' of ↵Linus Torvalds
git:// Pull USB updates from Greg KH: "Here is the big USB patchset for 4.12-rc1. Lots of good stuff here, after many many many attempts, the kernel finally has a working typeC interface, many thanks to Heikki and Guenter and others who have taken the time to get this merged. It wasn't an easy path for them at all. There's also a staging driver that uses this new api, which is why it's coming in through this tree. Along with that, there's the usual huge number of changes for gadget drivers, xhci, and other stuff. Johan also finally refactored pretty much every driver that was looking at USB endpoints to do it in a common way, which will help prevent any "badly-formed" devices from causing problems in drivers. That too wasn't a simple task. All of these have been in linux-next for a while with no reported issues" * tag 'usb-4.12-rc1' of git:// (263 commits) staging: typec: Fairchild FUSB302 Type-c chip driver staging: typec: Type-C Port Controller Interface driver (tcpci) staging: typec: USB Type-C Port Manager (tcpm) usb: host: xhci: remove #ifdef around PM functions usb: musb: don't mark of_dev_auxdata as initdata usb: misc: legousbtower: Fix buffers on stack USB: Revert "cdc-wdm: fix "out-of-sync" due to missing notifications" usb: Make sure usb/phy/of gets built-in USB: storage: e-mail update in drivers/usb/storage/unusual_devs.h usb: host: xhci: print correct command ring address usb: host: xhci: delete sp_dma_buffers for scratchpad usb: host: xhci: using correct specification chapter reference for DCBAAP xhci: switch to pci_alloc_irq_vectors usb: host: xhci-plat: set resume_quirk() for R-Car controllers usb: host: xhci-plat: add resume_quirk() usb: host: xhci-plat: enable clk in resume timing usb: host: plat: Enable xHCI plat runtime PM USB: serial: ftdi_sio: add device ID for Microsemi/Arrow SF2PLUS Dev Kit USB: serial: constify static arrays usb: fix some references for /proc/bus/usb ...
2017-05-02Merge tag 'docs-4.12' of git:// Torvalds
Pull documentation update from Jonathan Corbet: "A reasonably busy cycle for documentation this time around. There is a new guide for user-space API documents, rather sparsely populated at the moment, but it's a start. Markus improved the infrastructure for converting diagrams. Mauro has converted much of the USB documentation over to RST. Plus the usual set of fixes, improvements, and tweaks. There's a bit more than the usual amount of reaching out of Documentation/ to fix comments elsewhere in the tree; I have acks for those where I could get them" * tag 'docs-4.12' of git:// (74 commits) docs: Fix a couple typos docs: Fix a spelling error in vfio-mediated-device.txt docs: Fix a spelling error in ioctl-number.txt MAINTAINERS: update file entry for HSI subsystem Documentation: allow installing man pages to a user defined directory Doc/PM: Sync with intel_powerclamp code behavior zr364xx.rst: usb/devices is now at /sys/kernel/debug/ usb.rst: move documentation from proc_usb_info.txt to USB ReST book convert philips.txt to ReST and add to media docs docs-rst: usb: update old usbfs-related documentation arm: Documentation: update a path name docs: process/4.Coding.rst: Fix a couple of document refs docs-rst: fix usb cross-references usb: gadget.h: be consistent at kernel doc macros usb: composite.h: fix two warnings when building docs usb: get rid of some ReST doc build errors usb.rst: get rid of some Sphinx errors usb/URB.txt: convert to ReST and update it usb/persist.txt: convert to ReST and add to driver-api book usb/hotplug.txt: convert to ReST and add to driver-api book ...
2017-04-20usb.rst: move documentation from proc_usb_info.txt to USB ReST bookMauro Carvalho Chehab
The contents of proc_usb_info.txt complements what's there at driver-api usb book. Yet, it is outdated, as it still refers to the USB character devices as usbfs. So, move the contents to usb.rst, adjusting it to point to the right places. Signed-off-by: Mauro Carvalho Chehab <> Acked-by: Greg Kroah-Hartman <> Signed-off-by: Jonathan Corbet <>
2017-04-20docs-rst: usb: update old usbfs-related documentationMauro Carvalho Chehab
There's no usbfs anymore. The old features are now either exported to /dev/bus/usb or via debugfs. Update documentation accordingly, pointing to the new places where the character devices and usb/devices are now placed. Signed-off-by: Mauro Carvalho Chehab <> Signed-off-by: Jonathan Corbet <>
2017-04-11usb/URB.txt: convert to ReST and update itMauro Carvalho Chehab
The URB doc describes the Kernel mechanism that do USB transfers. While the functions are already described at urb.h, there are a number of concepts and theory that are important for USB driver developers. Convert it to ReST and use C ref links to point to the places at usb.h where each function and struct is located. A few of those descriptions were incomplete. While here, update to reflect the current API status. Signed-off-by: Mauro Carvalho Chehab <> Acked-by: Greg Kroah-Hartman <> Signed-off-by: Jonathan Corbet <>
2017-04-11usb/persist.txt: convert to ReST and add to driver-api bookMauro Carvalho Chehab
This document describe some USB core features. Add it to the driver-api book. Signed-off-by: Mauro Carvalho Chehab <> Acked-by: Greg Kroah-Hartman <> Signed-off-by: Jonathan Corbet <>
2017-04-11usb/hotplug.txt: convert to ReST and add to driver-api bookMauro Carvalho Chehab
This document describe some USB core features. Add it to the driver-api book. Signed-off-by: Mauro Carvalho Chehab <> Acked-by: Greg Kroah-Hartman <> Signed-off-by: Jonathan Corbet <>
2017-04-11error-codes.rst: convert to ReST and add to driver-api bookMauro Carvalho Chehab
This document describe some USB core features. Add it to the driver-api book. Signed-off-by: Mauro Carvalho Chehab <> Acked-by: Greg Kroah-Hartman <> Signed-off-by: Jonathan Corbet <>
2017-04-11usb/dma.txt: convert to ReST and add to driver-api bookMauro Carvalho Chehab
This document describe some USB core features. Add it to the driver-api book. Signed-off-by: Mauro Carvalho Chehab <> Acked-by: Greg Kroah-Hartman <> Signed-off-by: Jonathan Corbet <>
2017-04-11usb/power-management.txt: convert to ReST and add to driver-api bookMauro Carvalho Chehab
This document describe some USB core functions. Add it to the driver-api book. Signed-off-by: Mauro Carvalho Chehab <> Acked-by: Greg Kroah-Hartman <> Signed-off-by: Jonathan Corbet <>
2017-04-11usb/callbacks.txt: convert to ReST and add to driver-api bookMauro Carvalho Chehab
This document describe some USB core functions. Add it to the driver-api book. Signed-off-by: Mauro Carvalho Chehab <> Acked-by: Greg Kroah-Hartman <> Signed-off-by: Jonathan Corbet <>
2017-04-11usb/bulk-streams.txt: convert to ReST and add to driver-api bookMauro Carvalho Chehab
This document describe some USB core functions. Add it to the driver-api book. Signed-off-by: Mauro Carvalho Chehab <> Acked-by: Greg Kroah-Hartman <> Signed-off-by: Jonathan Corbet <>
2017-04-11usb/anchors.txt: convert to ReST and add to driver-api bookMauro Carvalho Chehab
This document describe some USB core functions. Add it to the driver-api book. Signed-off-by: Mauro Carvalho Chehab <> Acked-by: Greg Kroah-Hartman <> Signed-off-by: Jonathan Corbet <>
2017-03-23usb: USB Type-C connector classHeikki Krogerus
The purpose of USB Type-C connector class is to provide unified interface for the user space to get the status and basic information about USB Type-C connectors on a system, control over data role swapping, and when the port supports USB Power Delivery, also control over power role swapping and Alternate Modes. Signed-off-by: Heikki Krogerus <> Reviewed-by: Mika Westerberg <> Reviewed-and-Tested-by: Felipe Balbi <> Tested-by: Guenter Roeck <> Signed-off-by: Greg Kroah-Hartman <>
2017-03-21usb/doc: Add document for USB3 debug port usageLu Baolu
Add Documentation/usb/usb3-debug-port.rst. This document includes the guide for using USB3 debug port. Signed-off-by: Lu Baolu <> Acked-by: Thomas Gleixner <> Cc: Greg Kroah-Hartman <> Cc: Linus Torvalds <> Cc: Mathias Nyman <> Cc: Peter Zijlstra <> Cc: Cc: Link: Signed-off-by: Ingo Molnar <>
2017-02-22Merge tag 'docs-4.11' of git:// Torvalds
Pull documentation updates from Jonathan Corbet: "A slightly quieter cycle for documentation this time around. Three more DocBook template files have been converted to RST; only 21 to go. There are various build improvements and the usual array of documentation improvements and fixes" * tag 'docs-4.11' of git:// (44 commits) docs / driver-api: Fix structure references in device_link.rst PM / docs: Fix structure references in device.rst Add a target to check broken external links in the Documentation Documentation: Fix linux-api list typo Documentation: DocBook/Makefile comment typo Improve sparse documentation Documentation: make Makefile.sphinx no-ops quieter Documentation: DMA-ISA-LPC.txt Documentation: input: fix path to input code definitions docs: Remove the copyright year from docs: Fix a warning in the Korean HOWTO.rst translation PM / sleep / docs: Convert PM notifiers document to reST PM / core / docs: Convert sleep states API document to reST PM / core: Update kerneldoc comments in pm.h doc-rst: Fix recursive make invocation from macros doc-rst: Delete output of failed dot-SVG conversion doc-rst: Break shell command sequences on failure Documentation/sphinx: make targets independent of Sphinx work for HAVE_SPHINX=0 doc-rst: fixed cleandoc target when used with O=dir Documentation/sphinx: prevent generation of .pyc files in the source tree ...
2017-01-26Doc: Fix double words in DocumentationMasanari Iida
This patch fix some double words found in Documentation. Signed-off-by: Masanari Iida <> Signed-off-by: Jonathan Corbet <>
2017-01-24usb: gadget: uac2: add req_number as parameterPeter Chen
There are only two requests for uac2, it may not be enough at high loading system which usb interrupt handler can't be serviced on time, then the data will be lost since it is isoc transfer for audio. In this patch, we introduce a parameter for the number for usb request, and the user can override it if current number for request is not enough for his/her use case. Besides, update this parameter for legacy audio gadget and documentation. Signed-off-by: Peter Chen <> Signed-off-by: Felipe Balbi <>