1 /* SPDX-License-Identifier: GPL-2.0-or-later */ 2 /* 3 * USB Wacom tablet support 4 * 5 * Copyright (c) 2000-2004 Vojtech Pavlik <vojtech@ucw.cz> 6 * Copyright (c) 2000 Andreas Bach Aaen <abach@stofanet.dk> 7 * Copyright (c) 2000 Clifford Wolf <clifford@clifford.at> 8 * Copyright (c) 2000 Sam Mosel <sam.mosel@computer.org> 9 * Copyright (c) 2000 James E. Blair <corvus@gnu.org> 10 * Copyright (c) 2000 Daniel Egger <egger@suse.de> 11 * Copyright (c) 2001 Frederic Lepied <flepied@mandrakesoft.com> 12 * Copyright (c) 2004 Panagiotis Issaris <panagiotis.issaris@mech.kuleuven.ac.be> 13 * Copyright (c) 2002-2011 Ping Cheng <pingc@wacom.com> 14 * Copyright (c) 2014 Benjamin Tissoires <benjamin.tissoires@redhat.com> 15 * 16 * ChangeLog: 17 * v0.1 (vp) - Initial release 18 * v0.2 (aba) - Support for all buttons / combinations 19 * v0.3 (vp) - Support for Intuos added 20 * v0.4 (sm) - Support for more Intuos models, menustrip 21 * relative mode, proximity. 22 * v0.5 (vp) - Big cleanup, nifty features removed, 23 * they belong in userspace 24 * v1.8 (vp) - Submit URB only when operating, moved to CVS, 25 * use input_report_key instead of report_btn and 26 * other cleanups 27 * v1.11 (vp) - Add URB ->dev setting for new kernels 28 * v1.11 (jb) - Add support for the 4D Mouse & Lens 29 * v1.12 (de) - Add support for two more inking pen IDs 30 * v1.14 (vp) - Use new USB device id probing scheme. 31 * Fix Wacom Graphire mouse wheel 32 * v1.18 (vp) - Fix mouse wheel direction 33 * Make mouse relative 34 * v1.20 (fl) - Report tool id for Intuos devices 35 * - Multi tools support 36 * - Corrected Intuos protocol decoding (airbrush, 4D mouse, lens cursor...) 37 * - Add PL models support 38 * - Fix Wacom Graphire mouse wheel again 39 * v1.21 (vp) - Removed protocol descriptions 40 * - Added MISC_SERIAL for tool serial numbers 41 * (gb) - Identify version on module load. 42 * v1.21.1 (fl) - added Graphire2 support 43 * v1.21.2 (fl) - added Intuos2 support 44 * - added all the PL ids 45 * v1.21.3 (fl) - added another eraser id from Neil Okamoto 46 * - added smooth filter for Graphire from Peri Hankey 47 * - added PenPartner support from Olaf van Es 48 * - new tool ids from Ole Martin Bjoerndalen 49 * v1.29 (pc) - Add support for more tablets 50 * - Fix pressure reporting 51 * v1.30 (vp) - Merge 2.4 and 2.5 drivers 52 * - Since 2.5 now has input_sync(), remove MSC_SERIAL abuse 53 * - Cleanups here and there 54 * v1.30.1 (pi) - Added Graphire3 support 55 * v1.40 (pc) - Add support for several new devices, fix eraser reporting, ... 56 * v1.43 (pc) - Added support for Cintiq 21UX 57 * - Fixed a Graphire bug 58 * - Merged wacom_intuos3_irq into wacom_intuos_irq 59 * v1.44 (pc) - Added support for Graphire4, Cintiq 710, Intuos3 6x11, etc. 60 * - Report Device IDs 61 * v1.45 (pc) - Added support for DTF 521, Intuos3 12x12 and 12x19 62 * - Minor data report fix 63 * v1.46 (pc) - Split wacom.c into wacom_sys.c and wacom_wac.c, 64 * - where wacom_sys.c deals with system specific code, 65 * - and wacom_wac.c deals with Wacom specific code 66 * - Support Intuos3 4x6 67 * v1.47 (pc) - Added support for Bamboo 68 * v1.48 (pc) - Added support for Bamboo1, BambooFun, and Cintiq 12WX 69 * v1.49 (pc) - Added support for USB Tablet PC (0x90, 0x93, and 0x9A) 70 * v1.50 (pc) - Fixed a TabletPC touch bug in 2.6.28 71 * v1.51 (pc) - Added support for Intuos4 72 * v1.52 (pc) - Query Wacom data upon system resume 73 * - add defines for features->type 74 * - add new devices (0x9F, 0xE2, and 0XE3) 75 * v2.00 (bt) - conversion to a HID driver 76 * - integration of the Bluetooth devices 77 */ 78 79 #ifndef WACOM_H 80 #define WACOM_H 81 82 #include <linux/kernel.h> 83 #include <linux/slab.h> 84 #include <linux/module.h> 85 #include <linux/mod_devicetable.h> 86 #include <linux/hid.h> 87 #include <linux/kfifo.h> 88 #include <linux/leds.h> 89 #include <linux/usb/input.h> 90 #include <linux/power_supply.h> 91 #include <linux/timer.h> 92 #include <asm/unaligned.h> 93 94 /* 95 * Version Information 96 */ 97 #define DRIVER_VERSION "v2.00" 98 #define DRIVER_AUTHOR "Vojtech Pavlik <vojtech@ucw.cz>" 99 #define DRIVER_DESC "USB Wacom tablet driver" 100 101 #define USB_VENDOR_ID_WACOM 0x056a 102 #define USB_VENDOR_ID_LENOVO 0x17ef 103 104 enum wacom_worker { 105 WACOM_WORKER_WIRELESS, 106 WACOM_WORKER_BATTERY, 107 WACOM_WORKER_REMOTE, 108 WACOM_WORKER_MODE_CHANGE, 109 }; 110 111 struct wacom; 112 113 struct wacom_led { 114 struct led_classdev cdev; 115 struct led_trigger trigger; 116 struct wacom *wacom; 117 unsigned int group; 118 unsigned int id; 119 u8 llv; 120 u8 hlv; 121 bool held; 122 }; 123 124 struct wacom_group_leds { 125 u8 select; /* status led selector (0..3) */ 126 struct wacom_led *leds; 127 unsigned int count; 128 struct device *dev; 129 }; 130 131 struct wacom_battery { 132 struct wacom *wacom; 133 struct power_supply_desc bat_desc; 134 struct power_supply *battery; 135 char bat_name[WACOM_NAME_MAX]; 136 int bat_status; 137 int battery_capacity; 138 int bat_charging; 139 int bat_connected; 140 int ps_connected; 141 }; 142 143 struct wacom_remote { 144 spinlock_t remote_lock; 145 struct kfifo remote_fifo; 146 struct kobject *remote_dir; 147 struct { 148 struct attribute_group group; 149 u32 serial; 150 struct input_dev *input; 151 bool registered; 152 struct wacom_battery battery; 153 ktime_t active_time; 154 } remotes[WACOM_MAX_REMOTES]; 155 }; 156 157 struct wacom { 158 struct usb_device *usbdev; 159 struct usb_interface *intf; 160 struct wacom_wac wacom_wac; 161 struct hid_device *hdev; 162 struct mutex lock; 163 struct work_struct wireless_work; 164 struct work_struct battery_work; 165 struct work_struct remote_work; 166 struct delayed_work init_work; 167 struct wacom_remote *remote; 168 struct work_struct mode_change_work; 169 struct timer_list idleprox_timer; 170 bool generic_has_leds; 171 struct wacom_leds { 172 struct wacom_group_leds *groups; 173 unsigned int count; 174 u8 llv; /* status led brightness no button (1..127) */ 175 u8 hlv; /* status led brightness button pressed (1..127) */ 176 u8 img_lum; /* OLED matrix display brightness */ 177 u8 max_llv; /* maximum brightness of LED (llv) */ 178 u8 max_hlv; /* maximum brightness of LED (hlv) */ 179 } led; 180 struct wacom_battery battery; 181 bool resources; 182 }; 183 184 static inline void wacom_schedule_work(struct wacom_wac *wacom_wac, 185 enum wacom_worker which) 186 { 187 struct wacom *wacom = container_of(wacom_wac, struct wacom, wacom_wac); 188 189 switch (which) { 190 case WACOM_WORKER_WIRELESS: 191 schedule_work(&wacom->wireless_work); 192 break; 193 case WACOM_WORKER_BATTERY: 194 schedule_work(&wacom->battery_work); 195 break; 196 case WACOM_WORKER_REMOTE: 197 schedule_work(&wacom->remote_work); 198 break; 199 case WACOM_WORKER_MODE_CHANGE: 200 schedule_work(&wacom->mode_change_work); 201 break; 202 } 203 } 204 205 /* 206 * Convert a signed 32-bit integer to an unsigned n-bit integer. Undoes 207 * the normally-helpful work of 'hid_snto32' for fields that use signed 208 * ranges for questionable reasons. 209 */ 210 static inline __u32 wacom_s32tou(s32 value, __u8 n) 211 { 212 switch (n) { 213 case 8: return ((__u8)value); 214 case 16: return ((__u16)value); 215 case 32: return ((__u32)value); 216 } 217 return value & (1 << (n - 1)) ? value & (~(~0U << n)) : value; 218 } 219 220 extern const struct hid_device_id wacom_ids[]; 221 222 void wacom_wac_irq(struct wacom_wac *wacom_wac, size_t len); 223 void wacom_setup_device_quirks(struct wacom *wacom); 224 int wacom_setup_pen_input_capabilities(struct input_dev *input_dev, 225 struct wacom_wac *wacom_wac); 226 int wacom_setup_touch_input_capabilities(struct input_dev *input_dev, 227 struct wacom_wac *wacom_wac); 228 int wacom_setup_pad_input_capabilities(struct input_dev *input_dev, 229 struct wacom_wac *wacom_wac); 230 void wacom_wac_usage_mapping(struct hid_device *hdev, 231 struct hid_field *field, struct hid_usage *usage); 232 void wacom_wac_event(struct hid_device *hdev, struct hid_field *field, 233 struct hid_usage *usage, __s32 value); 234 void wacom_wac_report(struct hid_device *hdev, struct hid_report *report); 235 void wacom_battery_work(struct work_struct *work); 236 enum led_brightness wacom_leds_brightness_get(struct wacom_led *led); 237 struct wacom_led *wacom_led_find(struct wacom *wacom, unsigned int group, 238 unsigned int id); 239 struct wacom_led *wacom_led_next(struct wacom *wacom, struct wacom_led *cur); 240 int wacom_equivalent_usage(int usage); 241 int wacom_initialize_leds(struct wacom *wacom); 242 void wacom_idleprox_timeout(struct timer_list *list); 243 #endif 244