drivers/hid/hid-huawei.c

Source file repositories/reference/linux-study-clean/drivers/hid/hid-huawei.c

File Facts

System
Linux kernel
Corpus path
drivers/hid/hid-huawei.c
Extension
.c
Size
2627 bytes
Lines
83
Domain
Driver Families
Bucket
drivers/hid
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

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");

Annotation

Implementation Notes