diff options
| -rw-r--r-- | drivers/hid/Kconfig | 7 | ||||
| -rw-r--r-- | drivers/hid/Makefile | 1 | ||||
| -rw-r--r-- | drivers/hid/hid-huawei.c | 82 | ||||
| -rw-r--r-- | drivers/hid/hid-ids.h | 3 |
4 files changed, 93 insertions, 0 deletions
diff --git a/drivers/hid/Kconfig b/drivers/hid/Kconfig index c1d9f7c6a5f2..2fab4964d21c 100644 --- a/drivers/hid/Kconfig +++ b/drivers/hid/Kconfig @@ -1435,6 +1435,13 @@ config HID_KUNIT_TEST If in doubt, say "N". +config HID_HUAWEI + tristate "Huawei HID devices support" + depends on USB_HID + help + Support for huawei cd30 keyboard or other hid devices + that need fix-ups to work properly. + endmenu source "drivers/hid/bpf/Kconfig" diff --git a/drivers/hid/Makefile b/drivers/hid/Makefile index e01838239ae6..616ff21852ca 100644 --- a/drivers/hid/Makefile +++ b/drivers/hid/Makefile @@ -152,6 +152,7 @@ obj-$(CONFIG_HID_ZEROPLUS) += hid-zpff.o obj-$(CONFIG_HID_ZYDACRON) += hid-zydacron.o obj-$(CONFIG_HID_VIEWSONIC) += hid-viewsonic.o obj-$(CONFIG_HID_VRC2) += hid-vrc2.o +obj-$(CONFIG_HID_HUAWEI) += hid-huawei.o wacom-objs := wacom_wac.o wacom_sys.o obj-$(CONFIG_HID_WACOM) += wacom.o diff --git a/drivers/hid/hid-huawei.c b/drivers/hid/hid-huawei.c new file mode 100644 index 000000000000..6a616bf21b38 --- /dev/null +++ b/drivers/hid/hid-huawei.c @@ -0,0 +1,82 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * HID driver for some huawei "special" devices + * + * Copyright (c) 2026 Miao Li <limiao@kylinos.cn> + */ + +#include <linux/device.h> +#include <linux/hid.h> +#include <linux/module.h> +#include <linux/usb.h> + +#include "hid-ids.h" + +static const __u8 huawei_cd30_kbd_rdesc_fixed[] = { + 0x05, 0x01, /* Usage Page (Generic Desktop) */ + 0x09, 0x80, /* Usage (System Control) */ + 0xa1, 0x01, /* Collection (Application) */ + 0x85, 0x01, /* Report ID (1) */ + 0x19, 0x81, /* Usage Minimum (System Power Down) */ + 0x29, 0x83, /* Usage Maximum (System Wake Up) */ + 0x15, 0x00, /* Logical Minimum (0) */ + 0x25, 0x01, /* Logical Maximum (1) */ + 0x75, 0x01, /* Report Size (1 bit) */ + 0x95, 0x03, /* Report Count (3) */ + 0x81, 0x02, /* Input (Data,Var,Abs) */ + 0x95, 0x05, /* Report Count (5) */ + 0x81, 0x01, /* Input (Cnst,Ary,Abs) */ + 0xc0, /* End Collection */ + 0x05, 0x0c, /* Usage Page (Consumer) */ + 0x09, 0x01, /* Usage (Consumer Control) */ + 0xa1, 0x01, /* Collection (Application) */ + 0x85, 0x02, /* Report ID (2) */ + 0x19, 0x00, /* Usage Minimum (0) */ + 0x2a, 0x3c, 0x02, /* Usage Maximum (0x023C) */ + 0x15, 0x00, /* Logical Minimum (0) */ + 0x26, 0x3c, 0x02, /* Logical Maximum (0x023C) */ + 0x95, 0x01, /* Report Count (1) */ + 0x75, 0x10, /* Report Size (16 bits) */ + 0x81, 0x00, /* Input (Data,Ary,Abs) */ + 0xc0 /* End Collection */ +}; + +static const __u8 *huawei_report_fixup(struct hid_device *hdev, __u8 *rdesc, + unsigned int *rsize) +{ + struct usb_interface *intf = to_usb_interface(hdev->dev.parent); + + switch (hdev->product) { + case USB_DEVICE_ID_HUAWEI_CD30KBD: + if (intf->cur_altsetting->desc.bInterfaceNumber == 1) { + if (*rsize != sizeof(huawei_cd30_kbd_rdesc_fixed) || + memcmp(huawei_cd30_kbd_rdesc_fixed, rdesc, + sizeof(huawei_cd30_kbd_rdesc_fixed)) != 0) { + hid_info(hdev, "Replacing Huawei cd30 keyboard report descriptor.\n"); + *rsize = sizeof(huawei_cd30_kbd_rdesc_fixed); + return huawei_cd30_kbd_rdesc_fixed; + } + } + break; + } + + return rdesc; +} + +static const struct hid_device_id huawei_devices[] = { + /* HUAWEI cd30 keyboard */ + { HID_USB_DEVICE(USB_VENDOR_ID_HUAWEI, USB_DEVICE_ID_HUAWEI_CD30KBD)}, + { } +}; +MODULE_DEVICE_TABLE(hid, huawei_devices); + +static struct hid_driver huawei_driver = { + .name = "huawei", + .id_table = huawei_devices, + .report_fixup = huawei_report_fixup, +}; +module_hid_driver(huawei_driver); + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Miao Li <limiao@kylinos.cn>"); +MODULE_DESCRIPTION("HID driver for some huawei \"special\" devices"); diff --git a/drivers/hid/hid-ids.h b/drivers/hid/hid-ids.h index c1e4a6ce9631..91d650afdff3 100644 --- a/drivers/hid/hid-ids.h +++ b/drivers/hid/hid-ids.h @@ -1587,4 +1587,7 @@ #define USB_VENDOR_ID_JIELI_SDK_DEFAULT 0x4c4a #define USB_DEVICE_ID_JIELI_SDK_4155 0x4155 +#define USB_VENDOR_ID_HUAWEI 0x12d1 +#define USB_DEVICE_ID_HUAWEI_CD30KBD 0x109b + #endif |