diff options
| -rw-r--r-- | drivers/hid/bpf/progs/TUXEDO__Sirius-16-Gen1-and-Gen2.bpf.c | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/drivers/hid/bpf/progs/TUXEDO__Sirius-16-Gen1-and-Gen2.bpf.c b/drivers/hid/bpf/progs/TUXEDO__Sirius-16-Gen1-and-Gen2.bpf.c new file mode 100644 index 000000000000..a123003fb5fd --- /dev/null +++ b/drivers/hid/bpf/progs/TUXEDO__Sirius-16-Gen1-and-Gen2.bpf.c @@ -0,0 +1,47 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* Copyright (c) 2025 TUXEDO Computers GmbH + */ + +#include "vmlinux.h" +#include "hid_bpf.h" +#include "hid_bpf_helpers.h" +#include <bpf/bpf_tracing.h> + +HID_BPF_CONFIG( + HID_DEVICE(BUS_USB, HID_GROUP_GENERIC, 0x048D, 0x8910) +); + +SEC(HID_BPF_DEVICE_EVENT) +int BPF_PROG(ignore_key_fix_event, struct hid_bpf_ctx *hid_ctx) +{ + const int expected_length = 37; + const int expected_report_id = 1; + __u8 *data; + int i; + + if (hid_ctx->size < expected_length) + return 0; + + data = hid_bpf_get_data(hid_ctx, 0, expected_length); + if (!data || data[0] != expected_report_id) + return 0; + + // Zero out F13 (HID usage ID: 0x68) key press. + // The first 6 parallel key presses (excluding modifier keys) are + // encoded in an array containing usage IDs. + for (i = 3; i < 9; ++i) + if (data[i] == 0x68) + data[i] = 0x00; + // Additional parallel key presses starting with the 7th (excluding + // modifier keys) are encoded as a bit flag with the offset being + // the usage ID. + data[22] &= 0xfe; + + return 0; +} + +HID_BPF_OPS(ignore_button) = { + .hid_device_event = (void *)ignore_key_fix_event, +}; + +char _license[] SEC("license") = "GPL"; |