// SPDX-License-Identifier: GPL-2.0-or-later /* * HID driver for Waltop devices not fully compliant with HID standard * * Copyright (c) 2010 Nikolai Kondrashov */ /* */ #include <linux/device.h> #include <linux/hid.h> #include <linux/module.h> #include "hid-ids.h" /* * There exists an official driver on the manufacturer's website, which * wasn't submitted to the kernel, for some reason. The official driver * doesn't seem to support extra features of some tablets, like wheels. * * It shows that the feature report ID 2 could be used to control any waltop * tablet input mode, switching it between "default", "tablet" and "ink". * * This driver only uses "default" mode for all the supported tablets. This * mode tries to be HID-compatible (not very successfully), but cripples the * resolution of some tablets. * * The "tablet" mode uses some proprietary, yet decipherable protocol, which * represents the correct resolution, but is possibly HID-incompatible (i.e. * indescribable by a report descriptor). * * The purpose of the "ink" mode is unknown. * * The feature reports needed for switching to each mode are these: * * 02 16 00 default * 02 16 01 tablet * 02 16 02 ink */ /* Size of the original report descriptor of Slim Tablet 5.8 inch */ #define SLIM_TABLET_5_8_INCH_RDESC_ORIG_SIZE … /* Fixed Slim Tablet 5.8 inch descriptor */ static __u8 slim_tablet_5_8_inch_rdesc_fixed[] = …; /* Size of the original report descriptor of Slim Tablet 12.1 inch */ #define SLIM_TABLET_12_1_INCH_RDESC_ORIG_SIZE … /* Fixed Slim Tablet 12.1 inch descriptor */ static __u8 slim_tablet_12_1_inch_rdesc_fixed[] = …; /* Size of the original report descriptor of Q Pad */ #define Q_PAD_RDESC_ORIG_SIZE … /* Fixed Q Pad descriptor */ static __u8 q_pad_rdesc_fixed[] = …; /* Size of the original report descriptor of tablet with PID 0038 */ #define PID_0038_RDESC_ORIG_SIZE … /* * Fixed report descriptor for tablet with PID 0038. */ static __u8 pid_0038_rdesc_fixed[] = …; /* Size of the original report descriptor of Media Tablet 10.6 inch */ #define MEDIA_TABLET_10_6_INCH_RDESC_ORIG_SIZE … /* Fixed Media Tablet 10.6 inch descriptor */ static __u8 media_tablet_10_6_inch_rdesc_fixed[] = …; /* Size of the original report descriptor of Media Tablet 14.1 inch */ #define MEDIA_TABLET_14_1_INCH_RDESC_ORIG_SIZE … /* Fixed Media Tablet 14.1 inch descriptor */ static __u8 media_tablet_14_1_inch_rdesc_fixed[] = …; /* Size of the original report descriptor of Sirius Battery Free Tablet */ #define SIRIUS_BATTERY_FREE_TABLET_RDESC_ORIG_SIZE … /* Fixed Sirius Battery Free Tablet descriptor */ static __u8 sirius_battery_free_tablet_rdesc_fixed[] = …; static __u8 *waltop_report_fixup(struct hid_device *hdev, __u8 *rdesc, unsigned int *rsize) { … } static int waltop_raw_event(struct hid_device *hdev, struct hid_report *report, u8 *data, int size) { … } static const struct hid_device_id waltop_devices[] = …; MODULE_DEVICE_TABLE(hid, waltop_devices); static struct hid_driver waltop_driver = …; module_hid_driver(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …;
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