kernel/drivers/hid/hid-multitouch.c, branch linux-6.9.y

HID: Add quirk for Logitech Casa touchpad

2024-06-27T11:52:14Z

[ Upstream commit dd2c345a94cfa3873cc20db87387ee509c345c1b ] This device sometimes doesn't send touch release signals when moving from >=4 fingers to <4 fingers. Using MT_QUIRK_NOT_SEEN_MEANS_UP instead of MT_QUIRK_ALWAYS_VALID makes sure that no touches become stuck. MT_QUIRK_FORCE_MULTI_INPUT is not necessary for this device, but does no harm. Signed-off-by: Sean O'Brien Signed-off-by: Jiri Kosina Signed-off-by: Sasha Levin

Merge branch 'for-6.9/unused-struct-removal' into for-linus

2024-03-13T20:23:58Z

- removal of unused data structures all over the place (Jiri Slaby)

HID: hid-multitouch: remove unused mt_application::dev_time

2024-02-13T10:43:55Z

dev_time was moved to struct mt_application in commit f146d1c4d7ea (HID: multitouch: Store per collection multitouch data), but is not used since then. Remove it. Found by https://github.com/jirislaby/clang-struct. Signed-off-by: Jiri Slaby (SUSE) Cc: Jiri Kosina Cc: Benjamin Tissoires Signed-off-by: Jiri Kosina

HID: multitouch: Add required quirk for Synaptics 0xcddc device

2024-02-13T10:28:29Z

Add support for the pointing stick (Accupoint) and 2 mouse buttons. Present on some Toshiba/dynabook Portege X30 and X40 laptops. It should close https://bugzilla.kernel.org/show_bug.cgi?id=205817 Signed-off-by: Manuel Fombuena Signed-off-by: Jiri Kosina

HID: multitouch: Add quirk for HONOR GLO-GXXX touchpad

2023-11-22T10:27:46Z

Honor MagicBook 13 2023 has a touchpad which do not switch to the multitouch mode until the input mode feature is written by the host. The touchpad do report the input mode at touchpad(3), while itself working under mouse mode. As a workaround, it is possible to call MT_QUIRE_FORCE_GET_FEATURE to force set feature in mt_set_input_mode for such device. The touchpad reports as BLTP7853, which cannot retrive any useful manufacture information on the internel by this string at present. As the serial number of the laptop is GLO-G52, while DMI info reports the laptop serial number as GLO-GXXX, this workaround should applied to all models which has the GLO-GXXX. Signed-off-by: Aoba K Signed-off-by: Jiri Kosina

HID: multitouch: remove #ifdef CONFIG_PM

2023-10-25T16:33:42Z

Through the usage of pm_ptr() the CONFIG_PM-dependent code will always be compiled, protecting against bitrot. The linker will then garbage-collect the unused function avoiding any overhead. Signed-off-by: Thomas Weißschuh Link: https://lore.kernel.org/r/20231012-hid-pm_ptr-v1-3-0a71531ca93b@weissschuh.net Signed-off-by: Benjamin Tissoires

HID: multitouch: Add required quirk for Synaptics 0xcd7e device

2023-10-05T10:50:34Z

Register the Synaptics device as a special multitouch device with certain quirks that may improve usability of the touchpad device. Reported-by: Rain Closes: https://lore.kernel.org/linux-input/2bbb8e1d-1793-4df1-810f-cb0137341ff4@app.fastmail.com/ Signed-off-by: Rahul Rameshbabu Signed-off-by: Jiri Kosina

HID: multitouch: Correct devm device reference for hidinput input_dev name

2023-08-24T13:57:57Z

Reference the HID device rather than the input device for the devm allocation of the input_dev name. Referencing the input_dev would lead to a use-after-free when the input_dev was unregistered and subsequently fires a uevent that depends on the name. At the point of firing the uevent, the name would be freed by devres management. Use devm_kasprintf to simplify the logic for allocating memory and formatting the input_dev name string. Reported-by: Maxime Ripard Closes: https://lore.kernel.org/linux-input/ZOZIZCND+L0P1wJc@penguin/T/#m443f3dce92520f74b6cf6ffa8653f9c92643d4ae Fixes: c08d46aa805b ("HID: multitouch: devm conversion") Suggested-by: Maxime Ripard Suggested-by: Dmitry Torokhov Signed-off-by: Rahul Rameshbabu Reviewed-by: Maxime Ripard Link: https://lore.kernel.org/r/20230824061308.222021-3-sergeantsagara@protonmail.com Signed-off-by: Benjamin Tissoires

HID: multitouch: Add quirks for flipped axes

2023-01-18T09:08:51Z

Certain touchscreen devices, such as the ELAN9034, are oriented incorrectly and report touches on opposite points on the X and Y axes. For example, a 100x200 screen touched at (10,20) would report (90, 180) and vice versa. This is fixed by adding device quirks to transform the touch points into the correct spaces, from X -> MAX(X) - X, and Y -> MAX(Y) - Y. Signed-off-by: Allen Ballway Signed-off-by: Jiri Kosina

HID: multitouch: fix Asus ExpertBook P2 P2451FA trackpoint

2022-12-20T14:34:16Z

The HID descriptor of this device contains two mouse collections, one for mouse emulation and the other for the trackpoint. Both collections get merged and, because the first one defines X and Y, the movemenent events reported by the trackpoint collection are ignored. Set the MT_CLS_WIN_8_FORCE_MULTI_INPUT class for this device to be able to receive its reports. This fix is similar to/based on commit 40d5bb87377a ("HID: multitouch: enable multi-input as a quirk for some devices"). Link: https://gitlab.freedesktop.org/libinput/libinput/-/issues/825 Reported-by: Akito Tested-by: Akito Signed-off-by: José Expósito Signed-off-by: Jiri Kosina