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2024-06-27HID: bpf: allow hid_device_event hooks to inject input reports on selfBenjamin Tissoires1-1/+1
This is the same logic than hid_hw_raw_request or hid_hw_output_report: we can allow hid_bpf_try_input_report to be called from a hook on hid_input_report if we ensure that the call can not be made twice in a row. There is one extra subtlety in which there is a lock in hid_input_report. But given that we can detect if we are already in the hook, we can notify hid_input_report to not take the lock. This is done by checking if ctx_kern data is valid or null, and if it is equal to the dedicated incoming data buffer. In order to have more control on whether the lock needs to be taken or not we introduce a new kfunc for it: hid_bpf_try_input_report() Link: https://patch.msgid.link/20240626-hid_hw_req_bpf-v2-11-cfd60fb6c79f@kernel.org Acked-by: Jiri Kosina <jkosina@suse.com> Signed-off-by: Benjamin Tissoires <bentiss@kernel.org>
2024-06-14Documentation: HID: add a small blurb on udev-hid-bpfBenjamin Tissoires1-0/+17
This is the current decision we took: we don't provide automatic loading of HID-BPF by the kernel directly, but rely on an external tool for it. This tool is currently udev-hid-bpf, so let's make people aware of it. Link: https://lore.kernel.org/r/20240608-hid_bpf_struct_ops-v3-11-6ac6ade58329@kernel.org Signed-off-by: Benjamin Tissoires <bentiss@kernel.org>
2024-06-14Documentation: HID: amend HID-BPF for struct_opsBenjamin Tissoires1-84/+72
Now that we are using struct_ops, the docs need to be changed. Link: https://lore.kernel.org/r/20240608-hid_bpf_struct_ops-v3-10-6ac6ade58329@kernel.org Signed-off-by: Benjamin Tissoires <bentiss@kernel.org>
2024-05-14Merge branch 'for-6.10/intel-ish' into for-linusJiri Kosina1-36/+101
- Implement loading firmware from host in intel-ish driver, needed to support Lunar Lake and later (Zhang Lixu)
2024-05-07Documentation: hid: intel-ish-hid: add section for firmware loadingQianru Huang1-0/+65
Add a section to describe the ISH firmware loading process for Lunar Lake and later generations. Signed-off-by: Qianru Huang <qianru.huang@intel.com> Signed-off-by: Zhang Lixu <lixu.zhang@intel.com> Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Signed-off-by: Jiri Kosina <jkosina@suse.com>
2024-05-07Documentation: hid: intel-ish-hid: remove section numberingQianru Huang1-36/+36
Remove section numbering from the Intel Integrated Sensor Hub (ISH) documentation to simplify the structure, making it easier to maintain and update in the future. Suggested-by: Andy Shevchenko <andriy.shevchenko@intel.com> Signed-off-by: Qianru Huang <qianru.huang@intel.com> Signed-off-by: Zhang Lixu <lixu.zhang@intel.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Signed-off-by: Jiri Kosina <jkosina@suse.com>
2024-04-10HID: bpf: allow to inject HID event from BPFBenjamin Tissoires1-1/+1
It can be interesting to inject events from BPF as if the event were to come from the device. For example, some multitouch devices do not all the time send a proximity out event, and we might want to send it for the physical device. Compared to uhid, we can now inject events on any physical device, not just uhid virtual ones. Link: https://lore.kernel.org/r/20240315-b4-hid-bpf-new-funcs-v4-5-079c282469d3@kernel.org Signed-off-by: Benjamin Tissoires <bentiss@kernel.org>
2024-04-10HID: bpf: export hid_hw_output_report as a BPF kfuncBenjamin Tissoires1-1/+1
We currently only export hid_hw_raw_request() as a BPF kfunc. However, some devices require an explicit write on the Output Report instead of the use of the control channel. So also export hid_hw_output_report to BPF Link: https://lore.kernel.org/r/20240315-b4-hid-bpf-new-funcs-v4-2-079c282469d3@kernel.org Signed-off-by: Benjamin Tissoires <bentiss@kernel.org>
2023-08-07HID: Add introduction about HID for non-kernel programmersMarco Morandini3-0/+574
Add an introduction about HID meant for the casual programmer that is trying either to fix his device or to understand what is going wrong. Signed-off-by: Marco Morandini <marco.morandini@polimi.it> Co-authored-by: Peter Hutterer <peter.hutterer@who-t.net> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2023-02-22Merge tag 'docs-6.3' of git://git.lwn.net/linuxLinus Torvalds1-2/+2
Pull documentation updates from Jonathan Corbet: "It has been a moderately calm cycle for documentation; the significant changes include: - Some significant additions to the memory-management documentation - Some improvements to navigation in the HTML-rendered docs - More Spanish and Chinese translations ... and the usual set of typo fixes and such" * tag 'docs-6.3' of git://git.lwn.net/linux: (68 commits) Documentation/watchdog/hpwdt: Fix Format Documentation/watchdog/hpwdt: Fix Reference Documentation: core-api: padata: correct spelling docs/mm: Physical Memory: correct spelling in reference to CONFIG_PAGE_EXTENSION docs: Use HTML comments for the kernel-toc SPDX line docs: Add more information to the HTML sidebar Documentation: KVM: Update AMD memory encryption link printk: Document that CONFIG_BOOT_PRINTK_DELAY required for boot_delay= Documentation: userspace-api: correct spelling Documentation: sparc: correct spelling Documentation: driver-api: correct spelling Documentation: admin-guide: correct spelling docs: add workload-tracing document to admin-guide docs/admin-guide/mm: remove useless markup docs/mm: remove useless markup docs/mm: Physical Memory: remove useless markup docs/sp_SP: Add process magic-number translation docs: ftrace: always use canonical ftrace path Doc/damon: fix the data path error dma-buf: Add "dma-buf" to title of documentation ...
2023-02-06Documentation: hid: correct spellingRandy Dunlap5-5/+5
Correct spelling problems for Documentation/hid/ as reported by codespell. Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Cc: Jiri Kosina <jikos@kernel.org> Cc: Benjamin Tissoires <benjamin.tissoires@redhat.com> Cc: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Cc: linux-input@vger.kernel.org Cc: Jonathan Corbet <corbet@lwn.net> Cc: linux-doc@vger.kernel.org Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Link: https://lore.kernel.org/r/20230127064005.1558-11-rdunlap@infradead.org Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
2023-02-01docs: ftrace: always use canonical ftrace pathRoss Zwisler1-2/+2
The canonical location for the tracefs filesystem is at /sys/kernel/tracing. But, from Documentation/trace/ftrace.rst: Before 4.1, all ftrace tracing control files were within the debugfs file system, which is typically located at /sys/kernel/debug/tracing. For backward compatibility, when mounting the debugfs file system, the tracefs file system will be automatically mounted at: /sys/kernel/debug/tracing Many parts of Documentation still reference this older debugfs path, so let's update them to avoid confusion. Signed-off-by: Ross Zwisler <zwisler@google.com> Reviewed-by: Steven Rostedt (Google) <rostedt@goodmis.org> Link: https://lore.kernel.org/r/20230125213251.2013791-1-zwisler@google.com Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2023-01-19HID: bpf: rework how programs are attached and stored in the kernelBenjamin Tissoires1-1/+11
Previously, HID-BPF was relying on a bpf tracing program to be notified when a program was released from userspace. This is error prone, as LLVM sometimes inline the function and sometimes not. So instead of messing up with the bpf prog ref count, we can use the bpf_link concept which actually matches exactly what we want: - a bpf_link represents the fact that a given program is attached to a given HID device - as long as the bpf_link has fd opened (either by the userspace program still being around or by pinning the bpf object in the bpffs), the program stays attached to the HID device - once every user has closed the fd, we get called by hid_bpf_link_release() that we no longer have any users, and we can disconnect the program to the device in 2 passes: first atomically clear the bit saying that the link is active, and then calling release_work in a scheduled work item. This solves entirely the problems of BPF tracing not showing up and is definitely cleaner. Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Acked-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2022-11-15Documentation: add HID-BPF docsBenjamin Tissoires2-0/+513
Gives a primer on HID-BPF. Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2021-03-31Documentation: Add leading slash to some pathsMark O'Donovan1-1/+1
Change multiple sys/xyz to /sys/xyz Signed-off-by: Mark O'Donovan <shiftee@posteo.net> Link: https://lore.kernel.org/r/20210328152837.73347-1-shiftee@posteo.net Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2021-01-04Documentation: HID: uhid editing & correctionsRandy Dunlap1-17/+17
Do basic editing & correction to hid-alps.rst: - correct a file name (.txt -> .rst) - use less hyphenation when not needed - fix grammar & punctuation - fix article adjectives - fix typos/spellos - use HID instead of hid consistently Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Cc: Jiri Kosina <jikos@kernel.org> Cc: Benjamin Tissoires <benjamin.tissoires@redhat.com> Cc: linux-input@vger.kernel.org Cc: David Herrmann <dh.herrmann@gmail.com> Cc: Jonathan Corbet <corbet@lwn.net> Cc: linux-doc@vger.kernel.org Cc: Jonathan Cameron <jic23@kernel.org> Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2021-01-04Documentation: HID: hid-transport editing & correctionsRandy Dunlap1-6/+6
Do basic editing & correction to hid-transport.rst: - s/responsible of/responsible for/ - fix grammar & punctuation Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Cc: Jiri Kosina <jikos@kernel.org> Cc: Benjamin Tissoires <benjamin.tissoires@redhat.com> Cc: linux-input@vger.kernel.org Cc: David Herrmann <dh.herrmann@gmail.com> Cc: Jonathan Corbet <corbet@lwn.net> Cc: linux-doc@vger.kernel.org Cc: Jonathan Cameron <jic23@kernel.org> Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2021-01-04Documentation: HID: hid-sensor editing & correctionsRandy Dunlap1-9/+9
Do basic editing & correction to hid-sensor.rst: - use HID consistently instead of hid - drop a duplicate word - change article adjective an -> a - fix grammar & punctuation - spell out RW -> read-write - hyphenate multi-word adjectives Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Cc: Jiri Kosina <jikos@kernel.org> Cc: Jonathan Cameron <jic23@kernel.org> Cc: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Cc: linux-input@vger.kernel.org Cc: linux-iio@vger.kernel.org Cc: Jonathan Corbet <corbet@lwn.net> Cc: linux-doc@vger.kernel.org Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2021-01-04Documentation: HID: hidraw editing & correctionsRandy Dunlap1-2/+3
Do basic editing & correction to hidraw.rst: - use "hidraw" consistently except at the beginning of a sentence - add archive.org URL for signal11.us since the latter seems to be MIA - use a list for 2 URLs so that they don't run together Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Cc: Jiri Kosina <jikos@kernel.org> Cc: Benjamin Tissoires <benjamin.tissoires@redhat.com> Cc: linux-input@vger.kernel.org Cc: Alan Ott <alan@signal11.us> Cc: Jonathan Corbet <corbet@lwn.net> Cc: linux-doc@vger.kernel.org Cc: Jonathan Cameron <jic23@kernel.org> Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2021-01-04Documentation: HID: intel-ish-hid editing & correctionsRandy Dunlap1-38/+40
Do basic editing & correction to intel-ish-hid.rst: - fix grammar, verb tense, punctutation, and word phrasing - fix spellos - hyphenate multi-word adjectives - collapse 2 spaces to one space in the middle of sentences - use "I2C" instead of lower-case letters (as Linux I2C does) - change space indentation to tab - use HID instead of hid consistently - use a list so that some line items do not run together - use "a UUID" instead of "an UUID" Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Cc: Jiri Kosina <jikos@kernel.org> Cc: Jonathan Cameron <jic23@kernel.org> Cc: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Cc: linux-input@vger.kernel.org Cc: linux-iio@vger.kernel.org Cc: Jonathan Corbet <corbet@lwn.net> Cc: linux-doc@vger.kernel.org Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2021-01-04Documentation: HID: hiddev editing & correctionsRandy Dunlap1-5/+5
Do basic editing & correction to hiddev.rst: - use HID instead of hid consistently - add hyphenation of multi-word adjectives - drop a duplicate word - unhyphenate "a priori" Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Cc: Jiri Kosina <jikos@kernel.org> Cc: Benjamin Tissoires <benjamin.tissoires@redhat.com> Cc: linux-input@vger.kernel.org Cc: Jonathan Corbet <corbet@lwn.net> Cc: linux-doc@vger.kernel.org Cc: Jonathan Cameron <jic23@kernel.org> Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2021-01-04Documentation: HID: amd-sfh-hid editing & correctionsRandy Dunlap1-11/+11
Do basic editing & correction to amd-sfh-hid.rst: - fix punctuation - use HID instead of hid consistently - fix grammar, verb tense - fix Block Diagram heading Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Cc: Jiri Kosina <jikos@kernel.org> Cc: Jonathan Cameron <jic23@kernel.org> Cc: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Cc: linux-input@vger.kernel.org Cc: linux-iio@vger.kernel.org Cc: Jonathan Corbet <corbet@lwn.net> Cc: linux-doc@vger.kernel.org Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2021-01-04Documentation: HID: hid-alps editing & correctionsRandy Dunlap1-2/+2
Do basic editing & correction to hid-alps.rst: - fix grammar - fix punctuation spacing Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Cc: Jiri Kosina <jikos@kernel.org> Cc: Benjamin Tissoires <benjamin.tissoires@redhat.com> Cc: linux-input@vger.kernel.org Cc: Jonathan Corbet <corbet@lwn.net> Cc: Jonathan Cameron <jic23@kernel.org> Cc: linux-doc@vger.kernel.org Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2020-12-16Merge branch 'for-5.11/core' into for-linusJiri Kosina1-2/+43
- increase of maximum HID report size to 16KB in order to support some of the modern devices, from Dean Camera - control interface support for hidraw, from Dean Camera - stylus battery reporting improvement, from Dmitry Torokhov
2020-11-27HID: hidraw: Add additional hidraw input/output report ioctls.Dean Camera1-2/+43
Currently the hidraw module can only read and write feature HID reports on demand, via dedicated ioctls. Input reports are read from the device through the read() interface, while output reports are written through the write interface(). This is insufficient; it is desirable in many situations to be able to read and write input and output reports through the control interface to cover additional scenarios: - Reading an input report by its report ID, to get initial state - Writing an input report, to set initial input state in the device - Reading an output report by its report ID, to obtain current state - Writing an output report by its report ID, out of band This patch adds these missing ioctl requests to read and write the remaining HID report types. Note that not all HID backends will neccesarily support this (e.g. while the USB link layer supports setting Input reports, others may not). Also included are documentation and example updates. The current hidraw documentation states that feature reports read from the device does *not* include the report ID, however this is not the case and the returned report will have its report ID prepended by conforming HID devices, as the report data sent from the device over the control endpoint must be indentical in format to those sent over the regular transport. Signed-off-by: Dean Camera <dean@fourwalledcubicle.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2020-11-03HID: SFH: Add documentationJiri Kosina1-0/+145
Add Documentation/hid/amd-sfh-hid.rst file which was by mistake dropped by me when applying the series. Fixes: 302f0dad8c97a11ab ("SFH: Add maintainers and documentation for AMD SFH based on HID framework") Reported-by: Lukas Bulwahn <lukas.bulwahn@gmail.com> Originally-by: Sandeep Singh <Sandeep.Singh@amd.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2020-10-22SFH: Add maintainers and documentation for AMD SFH based on HID frameworkSandeep Singh1-0/+1
Add Maintainers for AMD SFH(SENSOR FUSION HUB) Solution and work flow document. Co-developed-by: Nehal Shah <Nehal-bakulchandra.Shah@amd.com> Signed-off-by: Nehal Shah <Nehal-bakulchandra.Shah@amd.com> Signed-off-by: Sandeep Singh <sandeep.singh@amd.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2020-07-13docs: hid: Convert link to httpsAlexander A. Klimov1-1/+1
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 <grandmaster@al2klimov.de> Link: https://lore.kernel.org/r/20200708123613.14368-1-grandmaster@al2klimov.de Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-07-13Documentation: hid/intel-ish-hid: eliminate duplicated wordRandy Dunlap1-1/+1
Drop the doubled word "the". Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Cc: Jonathan Corbet <corbet@lwn.net> Cc: linux-doc@vger.kernel.org Cc: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Cc: Jiri Kosina <jikos@kernel.org> Cc: linux-input@vger.kernel.org Link: https://lore.kernel.org/r/20200707180414.10467-9-rdunlap@infradead.org Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-07-15docs: add some documentation dirs to the driver-api bookMauro Carvalho Chehab1-1/+1
Those are subsystem docs, with a mix of kABI and user-faced docs. While they're not split, keep the dirs where they are, adding just a pointer to the main index. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2019-07-12Merge branch 'for-linus' of ↵Linus Torvalds9-676/+897
git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid Pull HID updates from Jiri Kosina: - Documentation conversion to ReST, from Mauro Carvalho Chehab - Wacom MobileStudio Pro support, from Ping Cheng - Wacom 2nd Gen Intuos Pro Small support, from Aaron Armstrong Skomra - assorted small fixes and device ID additions * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid: HID: Add another Primax PIXART OEM mouse quirk HID: wacom: generic: add touchring adjustment for 2nd Gen Pro Small docs: hid: convert to ReST HID: remove NO_D3 flag when remove driver HID: wacom: add new MobileStudio Pro support HID: wacom: generic: read the number of expected touches on a per collection basis HID: wacom: generic: support the 'report valid' usage for touch HID: wacom: generic: read HID_DG_CONTACTMAX from any feature report HID: wacom: Add 2nd gen Intuos Pro Small support HID: uclogic: Add support for Ugee Rainbow CV720 HID: logitech-dj: fix return value of logi_dj_recv_query_hidpp_devices HID: logitech-hidpp: HID: make const array consumer_rdesc_start static HID: logitech-dj: make const array template static HID: wacom: correct touch resolution x/y typo HID: wacom: generic: Correct pad syncing HID: wacom: generic: only switch the mode on devices with LEDs HID: logitech-dj: Add usb-id for the 27MHz MX3000 receiver
2019-07-02docs: hid: convert to ReSTMauro Carvalho Chehab9-676/+897
Rename the HID documentation files to ReST, add an index for them and adjust in order to produce a nice html output via the Sphinx build system. While here, fix the sysfs example from hid-sensor.txt, that has a lot of "?" instead of the proper UTF-8 characters that are produced by the tree command. At its new index.rst, let's add a :orphan: while this is not linked to the main index.rst file, in order to avoid build warnings. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Acked-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
2019-06-20docs: stop suggesting strlcpyStephen Kitt1-3/+3
Since strlcpy is deprecated, the documentation shouldn't suggest using it. This patch fixes the examples to use strscpy instead. It also uses sizeof instead of underlying constants as far as possible, to simplify future changes to the corresponding data structures. Signed-off-by: Stephen Kitt <steve@sk2.org> Acked-by: Kees Cook <keescook@chromium.org> Acked-by: Federico Vaga <federico.vaga@vaga.pv.it> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2018-12-18HID: doc: fix wrong data structure reference for UHID_OUTPUTPeter Hutterer1-1/+1
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2017-10-12Documentation: fix input related doc refsTom Saeger1-1/+1
Make `input` document refs valid including: - joystick - joystick-parport Signed-off-by: Tom Saeger <tom.saeger@oracle.com> Reviewed-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2017-03-14Documentation: hid: fix path to input bus definitionsMartin Kepplinger1-1/+1
The UAPI header split failed to update the documentation here; fix things accordingly. Signed-off-by: Martin Kepplinger <martink@posteo.de> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2016-08-17Documentation: HID: Intel ISH HID documentSrinivas Pandruvada1-0/+454
Document explaining ISH HID operation and implementation. Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2016-06-18HID: add Alps I2C HID Touchpad-Stick supportMasaki Ota1-0/+139
Add support Alps I2C HID Touchpad and Stick device. Signed-off-by: Masaki Ota <masaki.ota@jp.alps.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2015-04-10HID: sensor: Update document for custom sensorSrinivas Pandruvada1-0/+84
Added custom sensor documentation Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Acked-by: Jonathan Cameron <jic23@kernel.org> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2014-08-25HID: uhid: update documentationDavid Herrmann1-87/+92
Remove legacy bits, refer people to hid-transport.txt and add descriptions for all new features. Signed-off-by: David Herrmann <dh.herrmann@gmail.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2014-06-04Merge branch 'for-linus' of ↵Linus Torvalds1-1/+1
git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial into next Pull trivial tree changes from Jiri Kosina: "Usual pile of patches from trivial tree that make the world go round" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (23 commits) staging: go7007: remove reference to CONFIG_KMOD aic7xxx: Remove obsolete preprocessor define of: dma: doc fixes doc: fix incorrect formula to calculate CommitLimit value doc: Note need of bc in the kernel build from 3.10 onwards mm: Fix printk typo in dmapool.c modpost: Fix comment typo "Modules.symvers" Kconfig.debug: Grammar s/addition/additional/ wimax: Spelling s/than/that/, wording s/destinatary/recipient/ aic7xxx: Spelling s/termnation/termination/ arm64: mm: Remove superfluous "the" in comment of: Spelling s/anonymouns/anonymous/ dma: imx-sdma: Spelling s/determnine/determine/ ath10k: Improve grammar in comments ath6kl: Spelling s/determnine/determine/ of: Improve grammar for of_alias_get_id() documentation drm/exynos: Spelling s/contro/control/ radio-bcm2048.c: fix wrong overflow check doc: printk-formats: do not mention casts for u64/s64 doc: spelling error changes ...
2014-05-05doc: spelling error changesCarlos Garcia1-1/+1
Fixed multiple spelling errors. Acked-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Carlos E. Garcia <carlos@cgarcia.org> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2014-04-01HID: uhid: Add UHID_CREATE2 + UHID_INPUT2Petri Gynther1-0/+11
UHID_CREATE2: HID report descriptor data (rd_data) is an array in struct uhid_create2_req, instead of a pointer. Enables use from languages that don't support pointers, e.g. Python. UHID_INPUT2: Data array is the last field of struct uhid_input2_req. Enables userspace to write only the required bytes to kernel (ev.type + ev.u.input2.size + the part of the data array that matters), instead of the entire struct uhid_input2_req. Note: UHID_CREATE2 increases the total size of struct uhid_event slightly, thus increasing the size of messages that are queued for userspace. However, this won't affect the userspace processing of these events. [Jiri Kosina <jkosina@suse.cz>: adjust to hid_get_raw_report() and hid_output_raw_report() API changes] Signed-off-by: Petri Gynther <pgynther@google.com> Reviewed-by: David Herrmann <dh.herrmann@gmail.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2014-02-24HID: make .raw_request mandatoryBenjamin Tissoires1-1/+2
SET_REPORT and GET_REPORT are mandatory in the HID specification. Make the corresponding API in hid-core mandatory too, which removes the need to test against it in some various places. Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Reviewed-by: David Herrmann <dh.herrmann@gmail.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2014-02-17HID: Add HID transport driver documentationBenjamin Tissoires1-0/+316
Add David Herrmann's documentation for the new low-level HID transport driver functions. Signed-off-by: Frank Praznik <frank.praznik@oh.rr.com> Signed-off-by: David Herrmann <dh.herrmann@gmail.com> Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2013-07-31HID: uhid: use generic hidinput_input_event()David Herrmann1-1/+3
HID core provides the same functionality and can convert the input event to a raw output report. We can thus drop UHID_OUTPUT_EV and rely on the mandatory UHID_OUTPUT. User-space wasn't able to do anything with UHID_OUTPUT_EV, anyway. They don't have access to the report fields. Signed-off-by: David Herrmann <dh.herrmann@gmail.com> Acked-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2012-12-14HID: remove x bit from sensor docJiri Kosina1-0/+0
Reported-by: Xose Vazquez Perez <xose.vazquez@gmail.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2012-11-19doc: fix quite a few typos within DocumentationMasanari Iida1-1/+1
Correct spelling typo in Documentations Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2012-09-06HID: sensors: add documentationsrinivas pandruvada1-0/+140
Added a summary of HID sensor framework. Signed-off-by: srinivas pandruvada <srinivas.pandruvada@intel.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2012-06-18HID: uhid: add documentationDavid Herrmann1-0/+169
This describes the protocol used by uhid for user-space applications. It describes the details like non-blocking I/O and readv/writev for multiple events per syscall. Signed-off-by: David Herrmann <dh.herrmann@googlemail.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
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