kernel/linux.git/Documentation/hid, branch v6.12.80

Documentation: hid: intel-ish-hid: Add vendor custom firmware loading

2024-08-19T19:12:27+00:00

Add ISH firmware loading guidelines for vendor custom firmware. Signed-off-by: Zhang Lixu Acked-by: Srinivas Pandruvada Signed-off-by: Jiri Kosina

HID: bpf: allow hid_device_event hooks to inject input reports on self

2024-06-27T09:00:48+00:00

This is the same logic than hid_hw_raw_request or hid_hw_output_report: we can allow hid_bpf_try_input_report to be called from a hook on hid_input_report if we ensure that the call can not be made twice in a row. There is one extra subtlety in which there is a lock in hid_input_report. But given that we can detect if we are already in the hook, we can notify hid_input_report to not take the lock. This is done by checking if ctx_kern data is valid or null, and if it is equal to the dedicated incoming data buffer. In order to have more control on whether the lock needs to be taken or not we introduce a new kfunc for it: hid_bpf_try_input_report() Link: https://patch.msgid.link/20240626-hid_hw_req_bpf-v2-11-cfd60fb6c79f@kernel.org Acked-by: Jiri Kosina Signed-off-by: Benjamin Tissoires

Documentation: HID: add a small blurb on udev-hid-bpf

2024-06-14T09:20:20+00:00

This is the current decision we took: we don't provide automatic loading of HID-BPF by the kernel directly, but rely on an external tool for it. This tool is currently udev-hid-bpf, so let's make people aware of it. Link: https://lore.kernel.org/r/20240608-hid_bpf_struct_ops-v3-11-6ac6ade58329@kernel.org Signed-off-by: Benjamin Tissoires

Documentation: HID: amend HID-BPF for struct_ops

2024-06-14T09:20:20+00:00

Now that we are using struct_ops, the docs need to be changed. Link: https://lore.kernel.org/r/20240608-hid_bpf_struct_ops-v3-10-6ac6ade58329@kernel.org Signed-off-by: Benjamin Tissoires

Merge branch 'for-6.10/intel-ish' into for-linus

2024-05-14T11:53:15+00:00

- Implement loading firmware from host in intel-ish driver, needed to support Lunar Lake and later (Zhang Lixu)

Documentation: hid: intel-ish-hid: add section for firmware loading

2024-05-06T21:33:54+00:00

Add a section to describe the ISH firmware loading process for Lunar Lake and later generations. Signed-off-by: Qianru Huang Signed-off-by: Zhang Lixu Acked-by: Srinivas Pandruvada Signed-off-by: Jiri Kosina

Documentation: hid: intel-ish-hid: remove section numbering

2024-05-06T21:33:54+00:00

Remove section numbering from the Intel Integrated Sensor Hub (ISH) documentation to simplify the structure, making it easier to maintain and update in the future. Suggested-by: Andy Shevchenko Signed-off-by: Qianru Huang Signed-off-by: Zhang Lixu Reviewed-by: Andy Shevchenko Acked-by: Srinivas Pandruvada Signed-off-by: Jiri Kosina

HID: bpf: allow to inject HID event from BPF

2024-04-10T14:38:11+00:00

It can be interesting to inject events from BPF as if the event were to come from the device. For example, some multitouch devices do not all the time send a proximity out event, and we might want to send it for the physical device. Compared to uhid, we can now inject events on any physical device, not just uhid virtual ones. Link: https://lore.kernel.org/r/20240315-b4-hid-bpf-new-funcs-v4-5-079c282469d3@kernel.org Signed-off-by: Benjamin Tissoires

HID: bpf: export hid_hw_output_report as a BPF kfunc

2024-04-10T14:37:14+00:00

We currently only export hid_hw_raw_request() as a BPF kfunc. However, some devices require an explicit write on the Output Report instead of the use of the control channel. So also export hid_hw_output_report to BPF Link: https://lore.kernel.org/r/20240315-b4-hid-bpf-new-funcs-v4-2-079c282469d3@kernel.org Signed-off-by: Benjamin Tissoires

HID: Add introduction about HID for non-kernel programmers

2023-08-07T11:24:36+00:00

Add an introduction about HID meant for the casual programmer that is trying either to fix his device or to understand what is going wrong. Signed-off-by: Marco Morandini Co-authored-by: Peter Hutterer Signed-off-by: Jiri Kosina