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Brenton Simpson 80441f76ee Input: xpad - add Lenovo Legion Go controllers
The Lenovo Legion Go is a handheld gaming system, similar to a Steam Deck.
It has a gamepad (including rear paddles), 3 gyroscopes, a trackpad,
volume buttons, a power button, and 2 LED ring lights.

The Legion Go firmware presents these controls as a USB hub with various
devices attached.  In its default state, the gamepad is presented as an
Xbox controller connected to this hub.  (By holding a combination of
buttons, it can be changed to use the older DirectInput API.)

This patch teaches the existing Xbox controller module `xpad` to bind to
the controller in the Legion Go, which enables support for the:

- directional pad,
- analog sticks (including clicks),
- X, Y, A, B,
- start and select (or menu and capture),
- shoulder buttons, and
- rumble.

The trackpad, touchscreen, volume controls, and power button are already
supported via existing kernel modules.  Two of the face buttons, the
gyroscopes, rear paddles, and LEDs are not.

After this patch lands, the Legion Go will be mostly functional in Linux,
out-of-the-box.  The various components of the USB hub can be synthesized
into a single logical controller (including the additional buttons) in
userspace with [Handheld Daemon](https://github.com/hhd-dev/hhd), which
makes the Go fully functional.

Signed-off-by: Brenton Simpson <appsforartists@google.com>
Link: https://lore.kernel.org/r/20240118183546.418064-1-appsforartists@google.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2024-01-30 14:20:55 -08:00
arch Fix an FPU invalidation bug on exec(), and fix a performance 2023-08-26 10:57:29 -07:00
block block-6.5-2023-08-19 2023-08-19 17:31:46 +02:00
certs KEYS: Add missing function documentation 2023-04-24 16:15:52 +03:00
crypto crypto: fix uninit-value in af_alg_free_resources 2023-08-18 18:30:09 +08:00
Documentation dt-bindings: input: bindings for Adafruit Seesaw Gamepad 2024-01-09 23:45:18 -08:00
drivers Input: xpad - add Lenovo Legion Go controllers 2024-01-30 14:20:55 -08:00
fs 18 hotfixes. 13 are cc:stable and the remainder pertain to post-6.4 issues 2023-08-25 11:44:43 -07:00
include Input: as5011 - convert to GPIO descriptor 2023-12-13 21:26:13 -08:00
init Kbuild updates for v6.5 2023-07-01 09:24:31 -07:00
io_uring io_uring/parisc: Adjust pgoff in io_uring mmap() for parisc 2023-08-08 12:37:01 -06:00
ipc Merge branch 'work.namespace' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2023-02-24 19:20:07 -08:00
kernel A last minute fix for a regression introduced in the v6.5 merge window. The 2023-08-26 10:34:29 -07:00
lib lib/clz_ctz.c: Fix __clzdi2() and __ctzdi2() for 32-bit kernels 2023-08-25 13:22:10 -07:00
LICENSES LICENSES: Add the copyleft-next-0.3.1 license 2022-11-08 15:44:01 +01:00
mm 18 hotfixes. 13 are cc:stable and the remainder pertain to post-6.4 issues 2023-08-25 11:44:43 -07:00
net Networking fixes for 6.5-rc8, including fixes from wifi, can 2023-08-24 08:23:13 -07:00
rust rust: macros: vtable: fix HAS_* redefinition (gen_const_name) 2023-08-09 21:15:07 +02:00
samples samples: ftrace: Replace bti assembly with hint for older compiler 2023-08-21 22:03:58 -04:00
scripts Kbuild fixes for v6.5 (2nd) 2023-08-13 08:56:24 -07:00
security selinux/stable-6.5 PR 20230821 2023-08-22 10:38:29 -07:00
sound ASoC: Quirk for v6.5 2023-08-25 09:43:49 +02:00
tools 18 hotfixes. 13 are cc:stable and the remainder pertain to post-6.4 issues 2023-08-25 11:44:43 -07:00
usr initramfs: Encode dependency on KBUILD_BUILD_TIMESTAMP 2023-06-06 17:54:49 +09:00
virt KVM: Grab a reference to KVM for VM and vCPU stats file descriptors 2023-07-29 11:05:28 -04:00
.clang-format iommu: Add for_each_group_device() 2023-05-23 08:15:51 +02:00
.cocciconfig
.get_maintainer.ignore get_maintainer: add Alan to .get_maintainer.ignore 2022-08-20 15:17:44 -07:00
.gitattributes .gitattributes: set diff driver for Rust source code files 2023-05-31 17:48:25 +02:00
.gitignore Revert ".gitignore: ignore *.cover and *.mbx" 2023-07-04 15:05:12 -07:00
.mailmap mailmap: add entries for Simon Horman 2023-08-16 09:53:10 +01:00
.rustfmt.toml rust: add .rustfmt.toml 2022-09-28 09:02:20 +02:00
COPYING COPYING: state that all contributions really are covered by this file 2020-02-10 13:32:20 -08:00
CREDITS - Address -Wmissing-prototype warnings 2023-06-26 16:43:54 -07:00
Kbuild Kbuild updates for v6.1 2022-10-10 12:00:45 -07:00
Kconfig kbuild: ensure full rebuild when the compiler is updated 2020-05-12 13:28:33 +09:00
MAINTAINERS Input: driver for Adafruit Seesaw Gamepad 2024-01-09 23:45:19 -08:00
Makefile Linux 6.5 2023-08-27 14:49:51 -07:00
README

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.