Re: [PATCH v2 00/12] HID: fix for generic input processing

From: Jiri Kosina <jikos@kernel.org>
To: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Cc: "Dmitry Torokhov" <dmitry.torokhov@gmail.com>,
	"Jonathan Corbet" <corbet@lwn.net>,
	"Ahelenia Ziemiańska" <nabijaczleweli@nabijaczleweli.xyz>,
	"Ping Cheng" <pinglinux@gmail.com>,
	"Aaron Armstrong Skomra" <skomra@gmail.com>,
	"Jason Gerecke" <killertofu@gmail.com>,
	"Peter Hutterer" <peter.hutterer@who-t.net>,
	linux-input@vger.kernel.org, linux-doc@vger.kernel.org,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2 00/12] HID: fix for generic input processing
Date: Tue, 1 Mar 2022 15:53:31 +0100 (CET)	[thread overview]
Message-ID: <nycvar.YFH.7.76.2203011552560.24795@cbobk.fhfr.pm> (raw)
In-Reply-To: <20220203143226.4023622-1-benjamin.tissoires@redhat.com>

On Thu, 3 Feb 2022, Benjamin Tissoires wrote:

> Hi,
> 
> this is the v2 of my series which reworks the HID report processing.
> 
> I took Ping's comments into account, and amended my MR with the
> regression tests[0].
> More specifically, the tests (and thus this new version of the series)
> enforces that only one BTN_TOOL_* event gets forwarded between each
> EV_SYN frame, and that BTN_TOUCH are properly translated too.
> 
> This also magivally solved some worrying transitions we had in the
> pen state machine where the pen was jumping from "eraser" to "in
> contact". This new behavior enforces a "out-of-range" state in the
> middle, making it easier for userspace to understand now.
> 
> Again, tests are welcome :)
> 
> Cheers,
> Benjamin
> 
> [0] https://gitlab.freedesktop.org/libevdev/hid-tools/-/merge_requests/127
> 
> Benjamin Tissoires (12):
>   HID: core: statically allocate read buffers
>   HID: core: de-duplicate some code in hid_input_field()
>   HID: core: split data fetching from processing in hid_input_field()
>   HID: input: tag touchscreens as such if the physical is not there
>   HID: input: rework spaghetti code with switch statements
>   HID: input: move up out-of-range processing of input values
>   HID: compute an ordered list of input fields to process
>   HID: core: for input reports, process the usages by priority list
>   HID: input: enforce Invert usage to be processed before InRange
>   HID: input: remove the need for HID_QUIRK_INVERT
>   HID: input: accommodate priorities for slotted devices
>   Input: docs: add more details on the use of BTN_TOOL
> 
>  Documentation/input/event-codes.rst |   6 +-
>  drivers/hid/hid-core.c              | 280 ++++++++++++++++++---
>  drivers/hid/hid-input.c             | 364 ++++++++++++++++++++++------
>  include/linux/hid.h                 |  23 +-
>  4 files changed, 568 insertions(+), 105 deletions(-)

This is now in hid.git#for-5.18/core.

Thanks a lot Benjamin, very nice work.

-- 
Jiri Kosina
SUSE Labs