1 // SPDX-License-Identifier: GPL-2.0+ 2 3 /* 4 * Quirks for I2C-HID devices that do not supply proper descriptors 5 * 6 * Copyright (c) 2018 Julian Sax <jsbc@gmx.de> 7 * 8 */ 9 10 #include <linux/types.h> 11 #include <linux/dmi.h> 12 #include <linux/mod_devicetable.h> 13 14 #include "i2c-hid.h" 15 16 17 struct i2c_hid_desc_override { 18 union { 19 struct i2c_hid_desc *i2c_hid_desc; 20 uint8_t *i2c_hid_desc_buffer; 21 }; 22 uint8_t *hid_report_desc; 23 unsigned int hid_report_desc_size; 24 uint8_t *i2c_name; 25 }; 26 27 28 /* 29 * descriptors for the SIPODEV SP1064 touchpad 30 * 31 * This device does not supply any descriptors and on windows a filter 32 * driver operates between the i2c-hid layer and the device and injects 33 * these descriptors when the device is prompted. The descriptors were 34 * extracted by listening to the i2c-hid traffic that occurs between the 35 * windows filter driver and the windows i2c-hid driver. 36 */ 37 38 static const struct i2c_hid_desc_override sipodev_desc = { 39 .i2c_hid_desc_buffer = (uint8_t []) 40 {0x1e, 0x00, /* Length of descriptor */ 41 0x00, 0x01, /* Version of descriptor */ 42 0xdb, 0x01, /* Length of report descriptor */ 43 0x21, 0x00, /* Location of report descriptor */ 44 0x24, 0x00, /* Location of input report */ 45 0x1b, 0x00, /* Max input report length */ 46 0x25, 0x00, /* Location of output report */ 47 0x11, 0x00, /* Max output report length */ 48 0x22, 0x00, /* Location of command register */ 49 0x23, 0x00, /* Location of data register */ 50 0x11, 0x09, /* Vendor ID */ 51 0x88, 0x52, /* Product ID */ 52 0x06, 0x00, /* Version ID */ 53 0x00, 0x00, 0x00, 0x00 /* Reserved */ 54 }, 55 56 .hid_report_desc = (uint8_t []) 57 {0x05, 0x01, /* Usage Page (Desktop), */ 58 0x09, 0x02, /* Usage (Mouse), */ 59 0xA1, 0x01, /* Collection (Application), */ 60 0x85, 0x01, /* Report ID (1), */ 61 0x09, 0x01, /* Usage (Pointer), */ 62 0xA1, 0x00, /* Collection (Physical), */ 63 0x05, 0x09, /* Usage Page (Button), */ 64 0x19, 0x01, /* Usage Minimum (01h), */ 65 0x29, 0x02, /* Usage Maximum (02h), */ 66 0x25, 0x01, /* Logical Maximum (1), */ 67 0x75, 0x01, /* Report Size (1), */ 68 0x95, 0x02, /* Report Count (2), */ 69 0x81, 0x02, /* Input (Variable), */ 70 0x95, 0x06, /* Report Count (6), */ 71 0x81, 0x01, /* Input (Constant), */ 72 0x05, 0x01, /* Usage Page (Desktop), */ 73 0x09, 0x30, /* Usage (X), */ 74 0x09, 0x31, /* Usage (Y), */ 75 0x15, 0x81, /* Logical Minimum (-127), */ 76 0x25, 0x7F, /* Logical Maximum (127), */ 77 0x75, 0x08, /* Report Size (8), */ 78 0x95, 0x02, /* Report Count (2), */ 79 0x81, 0x06, /* Input (Variable, Relative), */ 80 0xC0, /* End Collection, */ 81 0xC0, /* End Collection, */ 82 0x05, 0x0D, /* Usage Page (Digitizer), */ 83 0x09, 0x05, /* Usage (Touchpad), */ 84 0xA1, 0x01, /* Collection (Application), */ 85 0x85, 0x04, /* Report ID (4), */ 86 0x05, 0x0D, /* Usage Page (Digitizer), */ 87 0x09, 0x22, /* Usage (Finger), */ 88 0xA1, 0x02, /* Collection (Logical), */ 89 0x15, 0x00, /* Logical Minimum (0), */ 90 0x25, 0x01, /* Logical Maximum (1), */ 91 0x09, 0x47, /* Usage (Touch Valid), */ 92 0x09, 0x42, /* Usage (Tip Switch), */ 93 0x95, 0x02, /* Report Count (2), */ 94 0x75, 0x01, /* Report Size (1), */ 95 0x81, 0x02, /* Input (Variable), */ 96 0x95, 0x01, /* Report Count (1), */ 97 0x75, 0x03, /* Report Size (3), */ 98 0x25, 0x05, /* Logical Maximum (5), */ 99 0x09, 0x51, /* Usage (Contact Identifier), */ 100 0x81, 0x02, /* Input (Variable), */ 101 0x75, 0x01, /* Report Size (1), */ 102 0x95, 0x03, /* Report Count (3), */ 103 0x81, 0x03, /* Input (Constant, Variable), */ 104 0x05, 0x01, /* Usage Page (Desktop), */ 105 0x26, 0x44, 0x0A, /* Logical Maximum (2628), */ 106 0x75, 0x10, /* Report Size (16), */ 107 0x55, 0x0E, /* Unit Exponent (14), */ 108 0x65, 0x11, /* Unit (Centimeter), */ 109 0x09, 0x30, /* Usage (X), */ 110 0x46, 0x1A, 0x04, /* Physical Maximum (1050), */ 111 0x95, 0x01, /* Report Count (1), */ 112 0x81, 0x02, /* Input (Variable), */ 113 0x46, 0xBC, 0x02, /* Physical Maximum (700), */ 114 0x26, 0x34, 0x05, /* Logical Maximum (1332), */ 115 0x09, 0x31, /* Usage (Y), */ 116 0x81, 0x02, /* Input (Variable), */ 117 0xC0, /* End Collection, */ 118 0x05, 0x0D, /* Usage Page (Digitizer), */ 119 0x09, 0x22, /* Usage (Finger), */ 120 0xA1, 0x02, /* Collection (Logical), */ 121 0x25, 0x01, /* Logical Maximum (1), */ 122 0x09, 0x47, /* Usage (Touch Valid), */ 123 0x09, 0x42, /* Usage (Tip Switch), */ 124 0x95, 0x02, /* Report Count (2), */ 125 0x75, 0x01, /* Report Size (1), */ 126 0x81, 0x02, /* Input (Variable), */ 127 0x95, 0x01, /* Report Count (1), */ 128 0x75, 0x03, /* Report Size (3), */ 129 0x25, 0x05, /* Logical Maximum (5), */ 130 0x09, 0x51, /* Usage (Contact Identifier), */ 131 0x81, 0x02, /* Input (Variable), */ 132 0x75, 0x01, /* Report Size (1), */ 133 0x95, 0x03, /* Report Count (3), */ 134 0x81, 0x03, /* Input (Constant, Variable), */ 135 0x05, 0x01, /* Usage Page (Desktop), */ 136 0x26, 0x44, 0x0A, /* Logical Maximum (2628), */ 137 0x75, 0x10, /* Report Size (16), */ 138 0x09, 0x30, /* Usage (X), */ 139 0x46, 0x1A, 0x04, /* Physical Maximum (1050), */ 140 0x95, 0x01, /* Report Count (1), */ 141 0x81, 0x02, /* Input (Variable), */ 142 0x46, 0xBC, 0x02, /* Physical Maximum (700), */ 143 0x26, 0x34, 0x05, /* Logical Maximum (1332), */ 144 0x09, 0x31, /* Usage (Y), */ 145 0x81, 0x02, /* Input (Variable), */ 146 0xC0, /* End Collection, */ 147 0x05, 0x0D, /* Usage Page (Digitizer), */ 148 0x09, 0x22, /* Usage (Finger), */ 149 0xA1, 0x02, /* Collection (Logical), */ 150 0x25, 0x01, /* Logical Maximum (1), */ 151 0x09, 0x47, /* Usage (Touch Valid), */ 152 0x09, 0x42, /* Usage (Tip Switch), */ 153 0x95, 0x02, /* Report Count (2), */ 154 0x75, 0x01, /* Report Size (1), */ 155 0x81, 0x02, /* Input (Variable), */ 156 0x95, 0x01, /* Report Count (1), */ 157 0x75, 0x03, /* Report Size (3), */ 158 0x25, 0x05, /* Logical Maximum (5), */ 159 0x09, 0x51, /* Usage (Contact Identifier), */ 160 0x81, 0x02, /* Input (Variable), */ 161 0x75, 0x01, /* Report Size (1), */ 162 0x95, 0x03, /* Report Count (3), */ 163 0x81, 0x03, /* Input (Constant, Variable), */ 164 0x05, 0x01, /* Usage Page (Desktop), */ 165 0x26, 0x44, 0x0A, /* Logical Maximum (2628), */ 166 0x75, 0x10, /* Report Size (16), */ 167 0x09, 0x30, /* Usage (X), */ 168 0x46, 0x1A, 0x04, /* Physical Maximum (1050), */ 169 0x95, 0x01, /* Report Count (1), */ 170 0x81, 0x02, /* Input (Variable), */ 171 0x46, 0xBC, 0x02, /* Physical Maximum (700), */ 172 0x26, 0x34, 0x05, /* Logical Maximum (1332), */ 173 0x09, 0x31, /* Usage (Y), */ 174 0x81, 0x02, /* Input (Variable), */ 175 0xC0, /* End Collection, */ 176 0x05, 0x0D, /* Usage Page (Digitizer), */ 177 0x09, 0x22, /* Usage (Finger), */ 178 0xA1, 0x02, /* Collection (Logical), */ 179 0x25, 0x01, /* Logical Maximum (1), */ 180 0x09, 0x47, /* Usage (Touch Valid), */ 181 0x09, 0x42, /* Usage (Tip Switch), */ 182 0x95, 0x02, /* Report Count (2), */ 183 0x75, 0x01, /* Report Size (1), */ 184 0x81, 0x02, /* Input (Variable), */ 185 0x95, 0x01, /* Report Count (1), */ 186 0x75, 0x03, /* Report Size (3), */ 187 0x25, 0x05, /* Logical Maximum (5), */ 188 0x09, 0x51, /* Usage (Contact Identifier), */ 189 0x81, 0x02, /* Input (Variable), */ 190 0x75, 0x01, /* Report Size (1), */ 191 0x95, 0x03, /* Report Count (3), */ 192 0x81, 0x03, /* Input (Constant, Variable), */ 193 0x05, 0x01, /* Usage Page (Desktop), */ 194 0x26, 0x44, 0x0A, /* Logical Maximum (2628), */ 195 0x75, 0x10, /* Report Size (16), */ 196 0x09, 0x30, /* Usage (X), */ 197 0x46, 0x1A, 0x04, /* Physical Maximum (1050), */ 198 0x95, 0x01, /* Report Count (1), */ 199 0x81, 0x02, /* Input (Variable), */ 200 0x46, 0xBC, 0x02, /* Physical Maximum (700), */ 201 0x26, 0x34, 0x05, /* Logical Maximum (1332), */ 202 0x09, 0x31, /* Usage (Y), */ 203 0x81, 0x02, /* Input (Variable), */ 204 0xC0, /* End Collection, */ 205 0x05, 0x0D, /* Usage Page (Digitizer), */ 206 0x55, 0x0C, /* Unit Exponent (12), */ 207 0x66, 0x01, 0x10, /* Unit (Seconds), */ 208 0x47, 0xFF, 0xFF, 0x00, 0x00,/* Physical Maximum (65535), */ 209 0x27, 0xFF, 0xFF, 0x00, 0x00,/* Logical Maximum (65535), */ 210 0x75, 0x10, /* Report Size (16), */ 211 0x95, 0x01, /* Report Count (1), */ 212 0x09, 0x56, /* Usage (Scan Time), */ 213 0x81, 0x02, /* Input (Variable), */ 214 0x09, 0x54, /* Usage (Contact Count), */ 215 0x25, 0x7F, /* Logical Maximum (127), */ 216 0x75, 0x08, /* Report Size (8), */ 217 0x81, 0x02, /* Input (Variable), */ 218 0x05, 0x09, /* Usage Page (Button), */ 219 0x09, 0x01, /* Usage (01h), */ 220 0x25, 0x01, /* Logical Maximum (1), */ 221 0x75, 0x01, /* Report Size (1), */ 222 0x95, 0x01, /* Report Count (1), */ 223 0x81, 0x02, /* Input (Variable), */ 224 0x95, 0x07, /* Report Count (7), */ 225 0x81, 0x03, /* Input (Constant, Variable), */ 226 0x05, 0x0D, /* Usage Page (Digitizer), */ 227 0x85, 0x02, /* Report ID (2), */ 228 0x09, 0x55, /* Usage (Contact Count Maximum), */ 229 0x09, 0x59, /* Usage (59h), */ 230 0x75, 0x04, /* Report Size (4), */ 231 0x95, 0x02, /* Report Count (2), */ 232 0x25, 0x0F, /* Logical Maximum (15), */ 233 0xB1, 0x02, /* Feature (Variable), */ 234 0x05, 0x0D, /* Usage Page (Digitizer), */ 235 0x85, 0x07, /* Report ID (7), */ 236 0x09, 0x60, /* Usage (60h), */ 237 0x75, 0x01, /* Report Size (1), */ 238 0x95, 0x01, /* Report Count (1), */ 239 0x25, 0x01, /* Logical Maximum (1), */ 240 0xB1, 0x02, /* Feature (Variable), */ 241 0x95, 0x07, /* Report Count (7), */ 242 0xB1, 0x03, /* Feature (Constant, Variable), */ 243 0x85, 0x06, /* Report ID (6), */ 244 0x06, 0x00, 0xFF, /* Usage Page (FF00h), */ 245 0x09, 0xC5, /* Usage (C5h), */ 246 0x26, 0xFF, 0x00, /* Logical Maximum (255), */ 247 0x75, 0x08, /* Report Size (8), */ 248 0x96, 0x00, 0x01, /* Report Count (256), */ 249 0xB1, 0x02, /* Feature (Variable), */ 250 0xC0, /* End Collection, */ 251 0x06, 0x00, 0xFF, /* Usage Page (FF00h), */ 252 0x09, 0x01, /* Usage (01h), */ 253 0xA1, 0x01, /* Collection (Application), */ 254 0x85, 0x0D, /* Report ID (13), */ 255 0x26, 0xFF, 0x00, /* Logical Maximum (255), */ 256 0x19, 0x01, /* Usage Minimum (01h), */ 257 0x29, 0x02, /* Usage Maximum (02h), */ 258 0x75, 0x08, /* Report Size (8), */ 259 0x95, 0x02, /* Report Count (2), */ 260 0xB1, 0x02, /* Feature (Variable), */ 261 0xC0, /* End Collection, */ 262 0x05, 0x0D, /* Usage Page (Digitizer), */ 263 0x09, 0x0E, /* Usage (Configuration), */ 264 0xA1, 0x01, /* Collection (Application), */ 265 0x85, 0x03, /* Report ID (3), */ 266 0x09, 0x22, /* Usage (Finger), */ 267 0xA1, 0x02, /* Collection (Logical), */ 268 0x09, 0x52, /* Usage (Device Mode), */ 269 0x25, 0x0A, /* Logical Maximum (10), */ 270 0x95, 0x01, /* Report Count (1), */ 271 0xB1, 0x02, /* Feature (Variable), */ 272 0xC0, /* End Collection, */ 273 0x09, 0x22, /* Usage (Finger), */ 274 0xA1, 0x00, /* Collection (Physical), */ 275 0x85, 0x05, /* Report ID (5), */ 276 0x09, 0x57, /* Usage (57h), */ 277 0x09, 0x58, /* Usage (58h), */ 278 0x75, 0x01, /* Report Size (1), */ 279 0x95, 0x02, /* Report Count (2), */ 280 0x25, 0x01, /* Logical Maximum (1), */ 281 0xB1, 0x02, /* Feature (Variable), */ 282 0x95, 0x06, /* Report Count (6), */ 283 0xB1, 0x03, /* Feature (Constant, Variable),*/ 284 0xC0, /* End Collection, */ 285 0xC0 /* End Collection */ 286 }, 287 .hid_report_desc_size = 475, 288 .i2c_name = "SYNA3602:00" 289 }; 290 291 292 static const struct dmi_system_id i2c_hid_dmi_desc_override_table[] = { 293 { 294 .ident = "Teclast F6 Pro", 295 .matches = { 296 DMI_EXACT_MATCH(DMI_SYS_VENDOR, "TECLAST"), 297 DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "F6 Pro"), 298 }, 299 .driver_data = (void *)&sipodev_desc 300 }, 301 { 302 .ident = "Teclast F7", 303 .matches = { 304 DMI_EXACT_MATCH(DMI_SYS_VENDOR, "TECLAST"), 305 DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "F7"), 306 }, 307 .driver_data = (void *)&sipodev_desc 308 }, 309 { 310 .ident = "Trekstor Primebook C13", 311 .matches = { 312 DMI_EXACT_MATCH(DMI_SYS_VENDOR, "TREKSTOR"), 313 DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Primebook C13"), 314 }, 315 .driver_data = (void *)&sipodev_desc 316 }, 317 { 318 .ident = "Trekstor Primebook C11", 319 .matches = { 320 DMI_EXACT_MATCH(DMI_SYS_VENDOR, "TREKSTOR"), 321 DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Primebook C11"), 322 }, 323 .driver_data = (void *)&sipodev_desc 324 }, 325 { 326 .ident = "Direkt-Tek DTLAPY116-2", 327 .matches = { 328 DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Direkt-Tek"), 329 DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "DTLAPY116-2"), 330 }, 331 .driver_data = (void *)&sipodev_desc 332 }, 333 { 334 .ident = "Direkt-Tek DTLAPY133-1", 335 .matches = { 336 DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Direkt-Tek"), 337 DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "DTLAPY133-1"), 338 }, 339 .driver_data = (void *)&sipodev_desc 340 }, 341 { 342 .ident = "Mediacom Flexbook Edge 11", 343 .matches = { 344 DMI_EXACT_MATCH(DMI_SYS_VENDOR, "MEDIACOM"), 345 DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "FlexBook edge11 - M-FBE11"), 346 }, 347 .driver_data = (void *)&sipodev_desc 348 }, 349 { 350 .ident = "Odys Winbook 13", 351 .matches = { 352 DMI_EXACT_MATCH(DMI_SYS_VENDOR, "AXDIA International GmbH"), 353 DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "WINBOOK 13"), 354 }, 355 .driver_data = (void *)&sipodev_desc 356 }, 357 { 358 .ident = "iBall Aer3", 359 .matches = { 360 DMI_EXACT_MATCH(DMI_SYS_VENDOR, "iBall"), 361 DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Aer3"), 362 }, 363 .driver_data = (void *)&sipodev_desc 364 }, 365 { } /* Terminate list */ 366 }; 367 368 369 struct i2c_hid_desc *i2c_hid_get_dmi_i2c_hid_desc_override(uint8_t *i2c_name) 370 { 371 struct i2c_hid_desc_override *override; 372 const struct dmi_system_id *system_id; 373 374 system_id = dmi_first_match(i2c_hid_dmi_desc_override_table); 375 if (!system_id) 376 return NULL; 377 378 override = system_id->driver_data; 379 if (strcmp(override->i2c_name, i2c_name)) 380 return NULL; 381 382 return override->i2c_hid_desc; 383 } 384 385 char *i2c_hid_get_dmi_hid_report_desc_override(uint8_t *i2c_name, 386 unsigned int *size) 387 { 388 struct i2c_hid_desc_override *override; 389 const struct dmi_system_id *system_id; 390 391 system_id = dmi_first_match(i2c_hid_dmi_desc_override_table); 392 if (!system_id) 393 return NULL; 394 395 override = system_id->driver_data; 396 if (strcmp(override->i2c_name, i2c_name)) 397 return NULL; 398 399 *size = override->hid_report_desc_size; 400 return override->hid_report_desc; 401 } 402