kernel/git/stable/linux-stable.git/drivers/hid/hid-input.c, branch linux-6.17.y

HID: hid-input: Extend Elan ignore battery quirk to USB

2025-12-12T17:40:21+00:00

[ Upstream commit 534ca75e8e3b713514b3f2da85dab96831cf5b2a ] USB Elan devices have the same problem as the I2C ones with a fake battery device showing up. Reviewed-by: Hans de Goede Reported-by: André Barata Closes: https://bugzilla.kernel.org/show_bug.cgi?id=220722 Signed-off-by: Mario Limonciello (AMD) Signed-off-by: Jiri Kosina Signed-off-by: Sasha Levin

HID: hid-input: only ignore 0 battery events for digitizers

2025-10-23T14:24:37+00:00

[ Upstream commit 0187c08058da3e7f11b356ac27e0c427d36f33f2 ] Commit 581c4484769e ("HID: input: map digitizer battery usage") added handling of battery events for digitizers (typically for batteries presented in stylii). Digitizers typically report correct battery levels only when stylus is actively touching the surface, and in other cases they may report battery level of 0. To avoid confusing consumers of the battery information the code was added to filer out reports with 0 battery levels. However there exist other kinds of devices that may legitimately report 0 battery levels. Fix this by filtering out 0-level reports only for digitizer usages, and continue reporting them for other kinds of devices (Smart Batteries, etc). Reported-by: 卢国宏 Fixes: 581c4484769e ("HID: input: map digitizer battery usage") Signed-off-by: Dmitry Torokhov Signed-off-by: Jiri Kosina Signed-off-by: Sasha Levin

HID: input: report battery status changes immediately

2025-08-20T18:03:39+00:00

Previously, the battery status (charging/discharging) was not reported immediately to user-space. For most input devices, this wasn't problematic because changing their battery status requires connecting them to a different bus. For example, a gamepad would report a discharging status while connected via Bluetooth and a charging status while connected via USB. However, certain devices are not connected or disconnected when their battery status changes. For example, a phone battery changes its status without connecting or disconnecting it. In these cases, the battery status was not reported immediately to user space. Report battery status changes immediately to user space to support these kinds of devices. Fixes: a608dc1c0639 ("HID: input: map battery system charging") Reported-by: 卢国宏 Closes: https://lore.kernel.org/linux-input/aI49Im0sGb6fpgc8@fedora/T/ Tested-by: 卢国宏 Signed-off-by: José Expósito Signed-off-by: Jiri Kosina

HID: input: rename hidinput_set_battery_charge_status()

2025-08-20T18:03:39+00:00

In preparation for a patch fixing a bug affecting hidinput_set_battery_charge_status(), rename the function to hidinput_update_battery_charge_status() and move it up so it can be used by hidinput_update_battery(). Refactor, no functional changes. Tested-by: 卢国宏 Signed-off-by: José Expósito Signed-off-by: Jiri Kosina

HID: input: lower message severity of 'No inputs registered, leaving' to debug

2025-06-10T19:47:48+00:00

Plugging in a "Blue snowball" microphone always shows the error 'No inputs registered, leaving', but the device functions as intended. When a HID device is started using the function hid_hw_start() and the argument HID_CONNECT_DEFAULT it will try all various hid connect requests. Not all devices will create an input device and so the message is needlessly noisy. Decrease it to debug instead. [jkosina@suse.com: edit shortlog] Signed-off-by: Mario Limonciello Signed-off-by: Jiri Kosina

HID: fix generic desktop D-Pad controls

2025-01-09T09:06:14+00:00

The addition of the "System Do Not Disturb" event code caused the Generic Desktop D-Pad configuration to be skipped. This commit allows both to be configured without conflicting with each other. Fixes: 22d6d060ac77 ("input: Add support for "Do Not Disturb"") Signed-off-by: Terry Tritton Reviewed-by: Aseda Aboagye Reviewed-by: Carlos Llamas Signed-off-by: Jiri Kosina

HID: Ignore battery for all ELAN I2C-HID devices

2024-08-06T06:42:53+00:00

Before this change there were 16 vid:pid based quirks to ignore the battery reported by Elan I2C-HID touchscreens on various Asus and HP laptops. And a report has been received that the 04F3:2A00 I2C touchscreen on the HP ProBook x360 11 G5 EE/86CF also reports a non present battery. Since I2C-HID devices are always builtin to laptops they are not battery owered so it should be safe to just ignore the battery on all Elan I2C-HID devices, rather then adding a 17th quirk for the 04F3:2A00 touchscreen. As reported in the changelog of commit a3a5a37efba1 ("HID: Ignore battery for ELAN touchscreens 2F2C and 4116"), which added 2 new Elan touchscreen quirks about a month ago, the HID reported battery seems to be related to a stylus being used. But even when a stylus is in use it does not properly report the charge of the stylus battery, instead the reported battery charge jumps from 0% to 1%. So it is best to just ignore the HID battery. Closes: https://bugzilla.redhat.com/show_bug.cgi?id=2302776 Cc: Louis Dalibard Signed-off-by: Hans de Goede Signed-off-by: Jiri Kosina

HID: Ignore battery for ELAN touchscreens 2F2C and 4116

2024-06-07T15:02:56+00:00

At least ASUS Zenbook 14 (2023) and ASUS Zenbook 14 Pro (2023) are affected. The touchscreen reports a battery status of 0% and jumps to 1% when a stylus is used. The device ID was added and the battery ignore quirk was enabled for it. [jkosina@suse.com: reformatted changelog a bit] Signed-off-by: Louis Dalibard Signed-off-by: Jiri Kosina

input: Add support for "Do Not Disturb"

2024-06-07T09:08:07+00:00

HUTRR94 added support for a new usage titled "System Do Not Disturb" which toggles a system-wide Do Not Disturb setting. This commit simply adds a new event code for the usage. Signed-off-by: Aseda Aboagye Acked-by: Dmitry Torokhov Link: https://lore.kernel.org/r/Zl-gUHE70s7wCAoB@google.com Signed-off-by: Benjamin Tissoires

input: Add event code for accessibility key

2024-06-07T09:08:07+00:00

HUTRR116 added support for a new usage titled "System Accessibility Binding" which toggles a system-wide bound accessibility UI or command. This commit simply adds a new event code for the usage. Signed-off-by: Aseda Aboagye Acked-by: Dmitry Torokhov Link: https://lore.kernel.org/r/Zl-e97O9nvudco5z@google.com Signed-off-by: Benjamin Tissoires