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author | Linus Torvalds <torvalds@linux-foundation.org> | 2022-03-25 22:22:16 +0300 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2022-03-25 22:22:16 +0300 |
commit | 5e206459f670b579da9b7861a0f3ce3b989a68b6 (patch) | |
tree | 21d55f20338a9d704d75ce2f263ff6339c53a57a /Documentation | |
parent | 1464677662943738741500a6f16b85d36bbde2be (diff) | |
parent | b146dbbd3bc61678165f3de7904ab613865385ba (diff) | |
download | linux-5e206459f670b579da9b7861a0f3ce3b989a68b6.tar.xz |
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid
Pull HID updates from Jiri Kosina:
- rework of generic input handling which ultimately makes the
processing of tablet events more generic and reliable (Benjamin
Tissoires)
- fixes for handling unnumbered reports fully correctly in i2c-hid
(Angela Czubak, Dmitry Torokhov)
- untangling of intermingled code for sending and handling output
reports in i2c-hid (Dmitry Torokhov)
- Apple magic keyboard support improvements for newer models (José
Expósito)
- Apple T2 Macs support improvements (Aun-Ali Zaidi, Paul Pawlowski)
- driver for Razer Blackwidow keyboards (Jelle van der Waa)
- driver for SiGma Micro keyboards (Desmond Lim)
- integration of first part of DIGImend patches in order to ultimately
vastly improve Linux support of tablets (Nikolai Kondrashov, José
Expósito)
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid: (55 commits)
HID: intel-ish-hid: Use dma_alloc_coherent for firmware update
Input: docs: add more details on the use of BTN_TOOL
HID: input: accommodate priorities for slotted devices
HID: input: remove the need for HID_QUIRK_INVERT
HID: input: enforce Invert usage to be processed before InRange
HID: core: for input reports, process the usages by priority list
HID: compute an ordered list of input fields to process
HID: input: move up out-of-range processing of input values
HID: input: rework spaghetti code with switch statements
HID: input: tag touchscreens as such if the physical is not there
HID: core: split data fetching from processing in hid_input_field()
HID: core: de-duplicate some code in hid_input_field()
HID: core: statically allocate read buffers
HID: uclogic: Support multiple frame input devices
HID: uclogic: Define report IDs before their descriptors
HID: uclogic: Put version first in rdesc namespace
HID: uclogic: Use "frame" instead of "buttonpad"
HID: uclogic: Use different constants for frame report IDs
HID: uclogic: Specify total report size to buttonpad macro
HID: uclogic: Switch to matching subreport bytes
...
Diffstat (limited to 'Documentation')
-rw-r--r-- | Documentation/input/event-codes.rst | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/Documentation/input/event-codes.rst b/Documentation/input/event-codes.rst index b24ae7d292cc..8741d390b184 100644 --- a/Documentation/input/event-codes.rst +++ b/Documentation/input/event-codes.rst @@ -137,7 +137,11 @@ A few EV_KEY codes have special meanings: code should be set to a value of 1. When the tool is no longer interacting with the input device, the BTN_TOOL_<name> code should be reset to 0. All trackpads, tablets, and touchscreens should use at least one BTN_TOOL_<name> - code when events are generated. + code when events are generated. Likewise all trackpads, tablets, and + touchscreens should export only one BTN_TOOL_<name> at a time. To not break + existing userspace, it is recommended to not switch tool in one EV_SYN frame + but first emitting the old BTN_TOOL_<name> at 0, then emit one SYN_REPORT + and then set the new BTN_TOOL_<name> at 1. * BTN_TOUCH: |