drivers/platform/x86/x86-android-tablets.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * DMI based code to deal with broken DSDTs on X86 tablets which ship with
   4  * Android as (part of) the factory image. The factory kernels shipped on these
   5  * devices typically have a bunch of things hardcoded, rather than specified
   6  * in their DSDT.
   7  *
   8  * Copyright (C) 2021 Hans de Goede <hdegoede@redhat.com>
   9  */
  10
  11 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  12
  13 #include <linux/acpi.h>
  14 #include <linux/dmi.h>
  15 #include <linux/efi.h>
  16 #include <linux/gpio_keys.h>
  17 #include <linux/gpio/consumer.h>
  18 #include <linux/gpio/driver.h>
  19 #include <linux/gpio/machine.h>
  20 #include <linux/i2c.h>
  21 #include <linux/input.h>
  22 #include <linux/irq.h>
  23 #include <linux/irqdomain.h>
  24 #include <linux/module.h>
  25 #include <linux/mod_devicetable.h>
  26 #include <linux/pinctrl/consumer.h>
  27 #include <linux/pinctrl/machine.h>
  28 #include <linux/platform_data/lp855x.h>
  29 #include <linux/platform_device.h>
  30 #include <linux/power/bq24190_charger.h>
  31 #include <linux/reboot.h>
  32 #include <linux/rmi.h>
  33 #include <linux/serdev.h>
  34 #include <linux/spi/spi.h>
  35 #include <linux/string.h>
  36 /* For gpio_get_desc() which is EXPORT_SYMBOL_GPL() */
  37 #include "../../gpio/gpiolib.h"
  38 #include "../../gpio/gpiolib-acpi.h"
  39
  40 /*
  41  * Helper code to get Linux IRQ numbers given a description of the IRQ source
  42  * (either IOAPIC index, or GPIO chip name + pin-number).
  43  */
  44 enum x86_acpi_irq_type {
  45         X86_ACPI_IRQ_TYPE_NONE,
  46         X86_ACPI_IRQ_TYPE_APIC,
  47         X86_ACPI_IRQ_TYPE_GPIOINT,
  48         X86_ACPI_IRQ_TYPE_PMIC,
  49 };
  50
  51 struct x86_acpi_irq_data {
  52         char *chip;   /* GPIO chip label (GPIOINT) or PMIC ACPI path (PMIC) */
  53         enum x86_acpi_irq_type type;
  54         enum irq_domain_bus_token domain;
  55         int index;
  56         int trigger;  /* ACPI_EDGE_SENSITIVE / ACPI_LEVEL_SENSITIVE */
  57         int polarity; /* ACPI_ACTIVE_HIGH / ACPI_ACTIVE_LOW / ACPI_ACTIVE_BOTH */
  58 };
  59
  60 static int gpiochip_find_match_label(struct gpio_chip *gc, void *data)
  61 {
  62         return gc->label && !strcmp(gc->label, data);
  63 }
  64
  65 static int x86_android_tablet_get_gpiod(char *label, int pin, struct gpio_desc **desc)
  66 {
  67         struct gpio_desc *gpiod;
  68         struct gpio_chip *chip;
  69
  70         chip = gpiochip_find(label, gpiochip_find_match_label);
  71         if (!chip) {
  72                 pr_err("error cannot find GPIO chip %s\n", label);
  73                 return -ENODEV;
  74         }
  75
  76         gpiod = gpiochip_get_desc(chip, pin);
  77         if (IS_ERR(gpiod)) {
  78                 pr_err("error %ld getting GPIO %s %d\n", PTR_ERR(gpiod), label, pin);
  79                 return PTR_ERR(gpiod);
  80         }
  81
  82         *desc = gpiod;
  83         return 0;
  84 }
  85
  86 static int x86_acpi_irq_helper_get(const struct x86_acpi_irq_data *data)
  87 {
  88         struct irq_fwspec fwspec = { };
  89         struct irq_domain *domain;
  90         struct acpi_device *adev;
  91         struct gpio_desc *gpiod;
  92         unsigned int irq_type;
  93         acpi_handle handle;
  94         acpi_status status;
  95         int irq, ret;
  96
  97         switch (data->type) {
  98         case X86_ACPI_IRQ_TYPE_APIC:
  99                 /*
 100                  * The DSDT may already reference the GSI in a device skipped by
 101                  * acpi_quirk_skip_i2c_client_enumeration(). Unregister the GSI
 102                  * to avoid EBUSY errors in this case.
 103                  */
 104                 acpi_unregister_gsi(data->index);
 105                 irq = acpi_register_gsi(NULL, data->index, data->trigger, data->polarity);
 106                 if (irq < 0)
 107                         pr_err("error %d getting APIC IRQ %d\n", irq, data->index);
 108
 109                 return irq;
 110         case X86_ACPI_IRQ_TYPE_GPIOINT:
 111                 /* Like acpi_dev_gpio_irq_get(), but without parsing ACPI resources */
 112                 ret = x86_android_tablet_get_gpiod(data->chip, data->index, &gpiod);
 113                 if (ret)
 114                         return ret;
 115
 116                 irq = gpiod_to_irq(gpiod);
 117                 if (irq < 0) {
 118                         pr_err("error %d getting IRQ %s %d\n", irq, data->chip, data->index);
 119                         return irq;
 120                 }
 121
 122                 irq_type = acpi_dev_get_irq_type(data->trigger, data->polarity);
 123                 if (irq_type != IRQ_TYPE_NONE && irq_type != irq_get_trigger_type(irq))
 124                         irq_set_irq_type(irq, irq_type);
 125
 126                 return irq;
 127         case X86_ACPI_IRQ_TYPE_PMIC:
 128                 status = acpi_get_handle(NULL, data->chip, &handle);
 129                 if (ACPI_FAILURE(status)) {
 130                         pr_err("error could not get %s handle\n", data->chip);
 131                         return -ENODEV;
 132                 }
 133
 134                 adev = acpi_fetch_acpi_dev(handle);
 135                 if (!adev) {
 136                         pr_err("error could not get %s adev\n", data->chip);
 137                         return -ENODEV;
 138                 }
 139
 140                 fwspec.fwnode = acpi_fwnode_handle(adev);
 141                 domain = irq_find_matching_fwspec(&fwspec, data->domain);
 142                 if (!domain) {
 143                         pr_err("error could not find IRQ domain for %s\n", data->chip);
 144                         return -ENODEV;
 145                 }
 146
 147                 return irq_create_mapping(domain, data->index);
 148         default:
 149                 return 0;
 150         }
 151 }
 152
 153 struct x86_i2c_client_info {
 154         struct i2c_board_info board_info;
 155         char *adapter_path;
 156         struct x86_acpi_irq_data irq_data;
 157 };
 158
 159 struct x86_serdev_info {
 160         const char *ctrl_hid;
 161         const char *ctrl_uid;
 162         const char *ctrl_devname;
 163         /*
 164          * ATM the serdev core only supports of or ACPI matching; and sofar all
 165          * Android x86 tablets DSDTs have usable serdev nodes, but sometimes
 166          * under the wrong controller. So we just tie the existing serdev ACPI
 167          * node to the right controller.
 168          */
 169         const char *serdev_hid;
 170 };
 171
 172 struct x86_dev_info {
 173         char *invalid_aei_gpiochip;
 174         const char * const *modules;
 175         const struct software_node *bat_swnode;
 176         struct gpiod_lookup_table * const *gpiod_lookup_tables;
 177         const struct x86_i2c_client_info *i2c_client_info;
 178         const struct platform_device_info *pdev_info;
 179         const struct x86_serdev_info *serdev_info;
 180         int i2c_client_count;
 181         int pdev_count;
 182         int serdev_count;
 183         int (*init)(void);
 184         void (*exit)(void);
 185 };
 186
 187 /* Generic / shared charger / battery settings */
 188 static const char * const tusb1211_chg_det_psy[] = { "tusb1211-charger-detect" };
 189 static const char * const bq24190_psy[] = { "bq24190-charger" };
 190 static const char * const bq25890_psy[] = { "bq25890-charger" };
 191
 192 static const struct property_entry fg_bq24190_supply_props[] = {
 193         PROPERTY_ENTRY_STRING_ARRAY("supplied-from", bq24190_psy),
 194         { }
 195 };
 196
 197 static const struct software_node fg_bq24190_supply_node = {
 198         .properties = fg_bq24190_supply_props,
 199 };
 200
 201 static const struct property_entry fg_bq25890_supply_props[] = {
 202         PROPERTY_ENTRY_STRING_ARRAY("supplied-from", bq25890_psy),
 203         { }
 204 };
 205
 206 static const struct software_node fg_bq25890_supply_node = {
 207         .properties = fg_bq25890_supply_props,
 208 };
 209
 210 /* LiPo HighVoltage (max 4.35V) settings used by most devs with a HV bat. */
 211 static const struct property_entry generic_lipo_hv_4v35_battery_props[] = {
 212         PROPERTY_ENTRY_STRING("compatible", "simple-battery"),
 213         PROPERTY_ENTRY_STRING("device-chemistry", "lithium-ion"),
 214         PROPERTY_ENTRY_U32("precharge-current-microamp", 256000),
 215         PROPERTY_ENTRY_U32("charge-term-current-microamp", 128000),
 216         PROPERTY_ENTRY_U32("constant-charge-current-max-microamp", 1856000),
 217         PROPERTY_ENTRY_U32("constant-charge-voltage-max-microvolt", 4352000),
 218         PROPERTY_ENTRY_U32("factory-internal-resistance-micro-ohms", 150000),
 219         { }
 220 };
 221
 222 static const struct software_node generic_lipo_hv_4v35_battery_node = {
 223         .properties = generic_lipo_hv_4v35_battery_props,
 224 };
 225
 226 /* For enabling the bq24190 5V boost based on id-pin */
 227 static struct regulator_consumer_supply intel_int3496_consumer = {
 228         .supply = "vbus",
 229         .dev_name = "intel-int3496",
 230 };
 231
 232 static const struct regulator_init_data bq24190_vbus_init_data = {
 233         .constraints = {
 234                 .name = "bq24190_vbus",
 235                 .valid_ops_mask = REGULATOR_CHANGE_STATUS,
 236         },
 237         .consumer_supplies = &intel_int3496_consumer,
 238         .num_consumer_supplies = 1,
 239 };
 240
 241 static struct bq24190_platform_data bq24190_pdata = {
 242         .regulator_init_data = &bq24190_vbus_init_data,
 243 };
 244
 245 static const char * const bq24190_modules[] __initconst = {
 246         "intel_crystal_cove_charger", /* For the bq24190 IRQ */
 247         "bq24190_charger",            /* For the Vbus regulator for intel-int3496 */
 248         NULL
 249 };
 250
 251 /* Generic pdevs array and gpio-lookups for micro USB ID pin handling */
 252 static const struct platform_device_info int3496_pdevs[] __initconst = {
 253         {
 254                 /* For micro USB ID pin handling */
 255                 .name = "intel-int3496",
 256                 .id = PLATFORM_DEVID_NONE,
 257         },
 258 };
 259
 260 static struct gpiod_lookup_table int3496_gpo2_pin22_gpios = {
 261         .dev_id = "intel-int3496",
 262         .table = {
 263                 GPIO_LOOKUP("INT33FC:02", 22, "id", GPIO_ACTIVE_HIGH),
 264                 { }
 265         },
 266 };
 267
 268 /* Asus ME176C and TF103C tablets shared data */
 269 static struct gpio_keys_button asus_me176c_tf103c_lid = {
 270         .code = SW_LID,
 271         /* .gpio gets filled in by asus_me176c_tf103c_init() */
 272         .active_low = true,
 273         .desc = "lid_sw",
 274         .type = EV_SW,
 275         .wakeup = true,
 276         .debounce_interval = 50,
 277 };
 278
 279 static const struct gpio_keys_platform_data asus_me176c_tf103c_lid_pdata __initconst = {
 280         .buttons = &asus_me176c_tf103c_lid,
 281         .nbuttons = 1,
 282         .name = "lid_sw",
 283 };
 284
 285 static const struct platform_device_info asus_me176c_tf103c_pdevs[] __initconst = {
 286         {
 287                 .name = "gpio-keys",
 288                 .id = PLATFORM_DEVID_AUTO,
 289                 .data = &asus_me176c_tf103c_lid_pdata,
 290                 .size_data = sizeof(asus_me176c_tf103c_lid_pdata),
 291         },
 292         {
 293                 /* For micro USB ID pin handling */
 294                 .name = "intel-int3496",
 295                 .id = PLATFORM_DEVID_NONE,
 296         },
 297 };
 298
 299 static int __init asus_me176c_tf103c_init(void)
 300 {
 301         struct gpio_desc *gpiod;
 302         int ret;
 303
 304         ret = x86_android_tablet_get_gpiod("INT33FC:02", 12, &gpiod);
 305         if (ret < 0)
 306                 return ret;
 307         asus_me176c_tf103c_lid.gpio = desc_to_gpio(gpiod);
 308
 309         return 0;
 310 }
 311
 312
 313 /* Asus ME176C tablets have an Android factory img with everything hardcoded */
 314 static const char * const asus_me176c_accel_mount_matrix[] = {
 315         "-1", "0", "0",
 316         "0", "1", "0",
 317         "0", "0", "1"
 318 };
 319
 320 static const struct property_entry asus_me176c_accel_props[] = {
 321         PROPERTY_ENTRY_STRING_ARRAY("mount-matrix", asus_me176c_accel_mount_matrix),
 322         { }
 323 };
 324
 325 static const struct software_node asus_me176c_accel_node = {
 326         .properties = asus_me176c_accel_props,
 327 };
 328
 329 static const struct property_entry asus_me176c_bq24190_props[] = {
 330         PROPERTY_ENTRY_STRING_ARRAY("supplied-from", tusb1211_chg_det_psy),
 331         PROPERTY_ENTRY_REF("monitored-battery", &generic_lipo_hv_4v35_battery_node),
 332         PROPERTY_ENTRY_U32("ti,system-minimum-microvolt", 3600000),
 333         PROPERTY_ENTRY_BOOL("omit-battery-class"),
 334         PROPERTY_ENTRY_BOOL("disable-reset"),
 335         { }
 336 };
 337
 338 static const struct software_node asus_me176c_bq24190_node = {
 339         .properties = asus_me176c_bq24190_props,
 340 };
 341
 342 static const struct property_entry asus_me176c_ug3105_props[] = {
 343         PROPERTY_ENTRY_STRING_ARRAY("supplied-from", bq24190_psy),
 344         PROPERTY_ENTRY_REF("monitored-battery", &generic_lipo_hv_4v35_battery_node),
 345         PROPERTY_ENTRY_U32("upisemi,rsns-microohm", 10000),
 346         { }
 347 };
 348
 349 static const struct software_node asus_me176c_ug3105_node = {
 350         .properties = asus_me176c_ug3105_props,
 351 };
 352
 353 static const struct x86_i2c_client_info asus_me176c_i2c_clients[] __initconst = {
 354         {
 355                 /* bq24297 battery charger */
 356                 .board_info = {
 357                         .type = "bq24190",
 358                         .addr = 0x6b,
 359                         .dev_name = "bq24297",
 360                         .swnode = &asus_me176c_bq24190_node,
 361                         .platform_data = &bq24190_pdata,
 362                 },
 363                 .adapter_path = "\\_SB_.I2C1",
 364                 .irq_data = {
 365                         .type = X86_ACPI_IRQ_TYPE_PMIC,
 366                         .chip = "\\_SB_.I2C7.PMIC",
 367                         .domain = DOMAIN_BUS_WAKEUP,
 368                         .index = 0,
 369                 },
 370         }, {
 371                 /* ug3105 battery monitor */
 372                 .board_info = {
 373                         .type = "ug3105",
 374                         .addr = 0x70,
 375                         .dev_name = "ug3105",
 376                         .swnode = &asus_me176c_ug3105_node,
 377                 },
 378                 .adapter_path = "\\_SB_.I2C1",
 379         }, {
 380                 /* ak09911 compass */
 381                 .board_info = {
 382                         .type = "ak09911",
 383                         .addr = 0x0c,
 384                         .dev_name = "ak09911",
 385                 },
 386                 .adapter_path = "\\_SB_.I2C5",
 387         }, {
 388                 /* kxtj21009 accel */
 389                 .board_info = {
 390                         .type = "kxtj21009",
 391                         .addr = 0x0f,
 392                         .dev_name = "kxtj21009",
 393                         .swnode = &asus_me176c_accel_node,
 394                 },
 395                 .adapter_path = "\\_SB_.I2C5",
 396                 .irq_data = {
 397                         .type = X86_ACPI_IRQ_TYPE_APIC,
 398                         .index = 0x44,
 399                         .trigger = ACPI_EDGE_SENSITIVE,
 400                         .polarity = ACPI_ACTIVE_LOW,
 401                 },
 402         }, {
 403                 /* goodix touchscreen */
 404                 .board_info = {
 405                         .type = "GDIX1001:00",
 406                         .addr = 0x14,
 407                         .dev_name = "goodix_ts",
 408                 },
 409                 .adapter_path = "\\_SB_.I2C6",
 410                 .irq_data = {
 411                         .type = X86_ACPI_IRQ_TYPE_APIC,
 412                         .index = 0x45,
 413                         .trigger = ACPI_EDGE_SENSITIVE,
 414                         .polarity = ACPI_ACTIVE_LOW,
 415                 },
 416         },
 417 };
 418
 419 static const struct x86_serdev_info asus_me176c_serdevs[] __initconst = {
 420         {
 421                 .ctrl_hid = "80860F0A",
 422                 .ctrl_uid = "2",
 423                 .ctrl_devname = "serial0",
 424                 .serdev_hid = "BCM2E3A",
 425         },
 426 };
 427
 428 static struct gpiod_lookup_table asus_me176c_goodix_gpios = {
 429         .dev_id = "i2c-goodix_ts",
 430         .table = {
 431                 GPIO_LOOKUP("INT33FC:00", 60, "reset", GPIO_ACTIVE_HIGH),
 432                 GPIO_LOOKUP("INT33FC:02", 28, "irq", GPIO_ACTIVE_HIGH),
 433                 { }
 434         },
 435 };
 436
 437 static struct gpiod_lookup_table * const asus_me176c_gpios[] = {
 438         &int3496_gpo2_pin22_gpios,
 439         &asus_me176c_goodix_gpios,
 440         NULL
 441 };
 442
 443 static const struct x86_dev_info asus_me176c_info __initconst = {
 444         .i2c_client_info = asus_me176c_i2c_clients,
 445         .i2c_client_count = ARRAY_SIZE(asus_me176c_i2c_clients),
 446         .pdev_info = asus_me176c_tf103c_pdevs,
 447         .pdev_count = ARRAY_SIZE(asus_me176c_tf103c_pdevs),
 448         .serdev_info = asus_me176c_serdevs,
 449         .serdev_count = ARRAY_SIZE(asus_me176c_serdevs),
 450         .gpiod_lookup_tables = asus_me176c_gpios,
 451         .bat_swnode = &generic_lipo_hv_4v35_battery_node,
 452         .modules = bq24190_modules,
 453         .invalid_aei_gpiochip = "INT33FC:02",
 454         .init = asus_me176c_tf103c_init,
 455 };
 456
 457 /* Asus TF103C tablets have an Android factory img with everything hardcoded */
 458 static const char * const asus_tf103c_accel_mount_matrix[] = {
 459         "0", "-1", "0",
 460         "-1", "0", "0",
 461         "0", "0", "1"
 462 };
 463
 464 static const struct property_entry asus_tf103c_accel_props[] = {
 465         PROPERTY_ENTRY_STRING_ARRAY("mount-matrix", asus_tf103c_accel_mount_matrix),
 466         { }
 467 };
 468
 469 static const struct software_node asus_tf103c_accel_node = {
 470         .properties = asus_tf103c_accel_props,
 471 };
 472
 473 static const struct property_entry asus_tf103c_touchscreen_props[] = {
 474         PROPERTY_ENTRY_STRING("compatible", "atmel,atmel_mxt_ts"),
 475         { }
 476 };
 477
 478 static const struct software_node asus_tf103c_touchscreen_node = {
 479         .properties = asus_tf103c_touchscreen_props,
 480 };
 481
 482 static const struct property_entry asus_tf103c_battery_props[] = {
 483         PROPERTY_ENTRY_STRING("compatible", "simple-battery"),
 484         PROPERTY_ENTRY_STRING("device-chemistry", "lithium-ion-polymer"),
 485         PROPERTY_ENTRY_U32("precharge-current-microamp", 256000),
 486         PROPERTY_ENTRY_U32("charge-term-current-microamp", 128000),
 487         PROPERTY_ENTRY_U32("constant-charge-current-max-microamp", 2048000),
 488         PROPERTY_ENTRY_U32("constant-charge-voltage-max-microvolt", 4208000),
 489         PROPERTY_ENTRY_U32("factory-internal-resistance-micro-ohms", 150000),
 490         { }
 491 };
 492
 493 static const struct software_node asus_tf103c_battery_node = {
 494         .properties = asus_tf103c_battery_props,
 495 };
 496
 497 static const struct property_entry asus_tf103c_bq24190_props[] = {
 498         PROPERTY_ENTRY_STRING_ARRAY("supplied-from", tusb1211_chg_det_psy),
 499         PROPERTY_ENTRY_REF("monitored-battery", &asus_tf103c_battery_node),
 500         PROPERTY_ENTRY_U32("ti,system-minimum-microvolt", 3600000),
 501         PROPERTY_ENTRY_BOOL("omit-battery-class"),
 502         PROPERTY_ENTRY_BOOL("disable-reset"),
 503         { }
 504 };
 505
 506 static const struct software_node asus_tf103c_bq24190_node = {
 507         .properties = asus_tf103c_bq24190_props,
 508 };
 509
 510 static const struct property_entry asus_tf103c_ug3105_props[] = {
 511         PROPERTY_ENTRY_STRING_ARRAY("supplied-from", bq24190_psy),
 512         PROPERTY_ENTRY_REF("monitored-battery", &asus_tf103c_battery_node),
 513         PROPERTY_ENTRY_U32("upisemi,rsns-microohm", 5000),
 514         { }
 515 };
 516
 517 static const struct software_node asus_tf103c_ug3105_node = {
 518         .properties = asus_tf103c_ug3105_props,
 519 };
 520
 521 static const struct x86_i2c_client_info asus_tf103c_i2c_clients[] __initconst = {
 522         {
 523                 /* bq24297 battery charger */
 524                 .board_info = {
 525                         .type = "bq24190",
 526                         .addr = 0x6b,
 527                         .dev_name = "bq24297",
 528                         .swnode = &asus_tf103c_bq24190_node,
 529                         .platform_data = &bq24190_pdata,
 530                 },
 531                 .adapter_path = "\\_SB_.I2C1",
 532                 .irq_data = {
 533                         .type = X86_ACPI_IRQ_TYPE_PMIC,
 534                         .chip = "\\_SB_.I2C7.PMIC",
 535                         .domain = DOMAIN_BUS_WAKEUP,
 536                         .index = 0,
 537                 },
 538         }, {
 539                 /* ug3105 battery monitor */
 540                 .board_info = {
 541                         .type = "ug3105",
 542                         .addr = 0x70,
 543                         .dev_name = "ug3105",
 544                         .swnode = &asus_tf103c_ug3105_node,
 545                 },
 546                 .adapter_path = "\\_SB_.I2C1",
 547         }, {
 548                 /* ak09911 compass */
 549                 .board_info = {
 550                         .type = "ak09911",
 551                         .addr = 0x0c,
 552                         .dev_name = "ak09911",
 553                 },
 554                 .adapter_path = "\\_SB_.I2C5",
 555         }, {
 556                 /* kxtj21009 accel */
 557                 .board_info = {
 558                         .type = "kxtj21009",
 559                         .addr = 0x0f,
 560                         .dev_name = "kxtj21009",
 561                         .swnode = &asus_tf103c_accel_node,
 562                 },
 563                 .adapter_path = "\\_SB_.I2C5",
 564         }, {
 565                 /* atmel touchscreen */
 566                 .board_info = {
 567                         .type = "atmel_mxt_ts",
 568                         .addr = 0x4a,
 569                         .dev_name = "atmel_mxt_ts",
 570                         .swnode = &asus_tf103c_touchscreen_node,
 571                 },
 572                 .adapter_path = "\\_SB_.I2C6",
 573                 .irq_data = {
 574                         .type = X86_ACPI_IRQ_TYPE_GPIOINT,
 575                         .chip = "INT33FC:02",
 576                         .index = 28,
 577                         .trigger = ACPI_EDGE_SENSITIVE,
 578                         .polarity = ACPI_ACTIVE_LOW,
 579                 },
 580         },
 581 };
 582
 583 static struct gpiod_lookup_table * const asus_tf103c_gpios[] = {
 584         &int3496_gpo2_pin22_gpios,
 585         NULL
 586 };
 587
 588 static const struct x86_dev_info asus_tf103c_info __initconst = {
 589         .i2c_client_info = asus_tf103c_i2c_clients,
 590         .i2c_client_count = ARRAY_SIZE(asus_tf103c_i2c_clients),
 591         .pdev_info = asus_me176c_tf103c_pdevs,
 592         .pdev_count = ARRAY_SIZE(asus_me176c_tf103c_pdevs),
 593         .gpiod_lookup_tables = asus_tf103c_gpios,
 594         .bat_swnode = &asus_tf103c_battery_node,
 595         .modules = bq24190_modules,
 596         .invalid_aei_gpiochip = "INT33FC:02",
 597         .init = asus_me176c_tf103c_init,
 598 };
 599
 600 /*
 601  * When booted with the BIOS set to Android mode the Chuwi Hi8 (CWI509) DSDT
 602  * contains a whole bunch of bogus ACPI I2C devices and is missing entries
 603  * for the touchscreen and the accelerometer.
 604  */
 605 static const struct property_entry chuwi_hi8_gsl1680_props[] = {
 606         PROPERTY_ENTRY_U32("touchscreen-size-x", 1665),
 607         PROPERTY_ENTRY_U32("touchscreen-size-y", 1140),
 608         PROPERTY_ENTRY_BOOL("touchscreen-swapped-x-y"),
 609         PROPERTY_ENTRY_BOOL("silead,home-button"),
 610         PROPERTY_ENTRY_STRING("firmware-name", "gsl1680-chuwi-hi8.fw"),
 611         { }
 612 };
 613
 614 static const struct software_node chuwi_hi8_gsl1680_node = {
 615         .properties = chuwi_hi8_gsl1680_props,
 616 };
 617
 618 static const char * const chuwi_hi8_mount_matrix[] = {
 619         "1", "0", "0",
 620         "0", "-1", "0",
 621         "0", "0", "1"
 622 };
 623
 624 static const struct property_entry chuwi_hi8_bma250e_props[] = {
 625         PROPERTY_ENTRY_STRING_ARRAY("mount-matrix", chuwi_hi8_mount_matrix),
 626         { }
 627 };
 628
 629 static const struct software_node chuwi_hi8_bma250e_node = {
 630         .properties = chuwi_hi8_bma250e_props,
 631 };
 632
 633 static const struct x86_i2c_client_info chuwi_hi8_i2c_clients[] __initconst = {
 634         {
 635                 /* Silead touchscreen */
 636                 .board_info = {
 637                         .type = "gsl1680",
 638                         .addr = 0x40,
 639                         .swnode = &chuwi_hi8_gsl1680_node,
 640                 },
 641                 .adapter_path = "\\_SB_.I2C4",
 642                 .irq_data = {
 643                         .type = X86_ACPI_IRQ_TYPE_APIC,
 644                         .index = 0x44,
 645                         .trigger = ACPI_EDGE_SENSITIVE,
 646                         .polarity = ACPI_ACTIVE_HIGH,
 647                 },
 648         }, {
 649                 /* BMA250E accelerometer */
 650                 .board_info = {
 651                         .type = "bma250e",
 652                         .addr = 0x18,
 653                         .swnode = &chuwi_hi8_bma250e_node,
 654                 },
 655                 .adapter_path = "\\_SB_.I2C3",
 656                 .irq_data = {
 657                         .type = X86_ACPI_IRQ_TYPE_GPIOINT,
 658                         .chip = "INT33FC:02",
 659                         .index = 23,
 660                         .trigger = ACPI_LEVEL_SENSITIVE,
 661                         .polarity = ACPI_ACTIVE_HIGH,
 662                 },
 663         },
 664 };
 665
 666 static int __init chuwi_hi8_init(void)
 667 {
 668         /*
 669          * Avoid the acpi_unregister_gsi() call in x86_acpi_irq_helper_get()
 670          * breaking the touchscreen + logging various errors when the Windows
 671          * BIOS is used.
 672          */
 673         if (acpi_dev_present("MSSL0001", NULL, 1))
 674                 return -ENODEV;
 675
 676         return 0;
 677 }
 678
 679 static const struct x86_dev_info chuwi_hi8_info __initconst = {
 680         .i2c_client_info = chuwi_hi8_i2c_clients,
 681         .i2c_client_count = ARRAY_SIZE(chuwi_hi8_i2c_clients),
 682         .init = chuwi_hi8_init,
 683 };
 684
 685 #define CZC_EC_EXTRA_PORT       0x68
 686 #define CZC_EC_ANDROID_KEYS     0x63
 687
 688 static int __init czc_p10t_init(void)
 689 {
 690         /*
 691          * The device boots up in "Windows 7" mode, when the home button sends a
 692          * Windows specific key sequence (Left Meta + D) and the second button
 693          * sends an unknown one while also toggling the Radio Kill Switch.
 694          * This is a surprising behavior when the second button is labeled "Back".
 695          *
 696          * The vendor-supplied Android-x86 build switches the device to a "Android"
 697          * mode by writing value 0x63 to the I/O port 0x68. This just seems to just
 698          * set bit 6 on address 0x96 in the EC region; switching the bit directly
 699          * seems to achieve the same result. It uses a "p10t_switcher" to do the
 700          * job. It doesn't seem to be able to do anything else, and no other use
 701          * of the port 0x68 is known.
 702          *
 703          * In the Android mode, the home button sends just a single scancode,
 704          * which can be handled in Linux userspace more reasonably and the back
 705          * button only sends a scancode without toggling the kill switch.
 706          * The scancode can then be mapped either to Back or RF Kill functionality
 707          * in userspace, depending on how the button is labeled on that particular
 708          * model.
 709          */
 710         outb(CZC_EC_ANDROID_KEYS, CZC_EC_EXTRA_PORT);
 711         return 0;
 712 }
 713
 714 static const struct x86_dev_info czc_p10t __initconst = {
 715         .init = czc_p10t_init,
 716 };
 717
 718 /* Lenovo Yoga Book X90F / X91F / X91L need manual instantiation of the fg client */
 719 static const struct x86_i2c_client_info lenovo_yogabook_x9x_i2c_clients[] __initconst = {
 720         {
 721                 /* BQ27542 fuel-gauge */
 722                 .board_info = {
 723                         .type = "bq27542",
 724                         .addr = 0x55,
 725                         .dev_name = "bq27542",
 726                         .swnode = &fg_bq25890_supply_node,
 727                 },
 728                 .adapter_path = "\\_SB_.PCI0.I2C1",
 729         },
 730 };
 731
 732 static const struct x86_dev_info lenovo_yogabook_x9x_info __initconst = {
 733         .i2c_client_info = lenovo_yogabook_x9x_i2c_clients,
 734         .i2c_client_count = ARRAY_SIZE(lenovo_yogabook_x9x_i2c_clients),
 735 };
 736
 737 /* Lenovo Yoga Tablet 2 1050F/L's Android factory img has everything hardcoded */
 738 static const struct property_entry lenovo_yoga_tab2_830_1050_bq24190_props[] = {
 739         PROPERTY_ENTRY_STRING_ARRAY("supplied-from", tusb1211_chg_det_psy),
 740         PROPERTY_ENTRY_REF("monitored-battery", &generic_lipo_hv_4v35_battery_node),
 741         PROPERTY_ENTRY_BOOL("omit-battery-class"),
 742         PROPERTY_ENTRY_BOOL("disable-reset"),
 743         { }
 744 };
 745
 746 static const struct software_node lenovo_yoga_tab2_830_1050_bq24190_node = {
 747         .properties = lenovo_yoga_tab2_830_1050_bq24190_props,
 748 };
 749
 750 /* This gets filled by lenovo_yoga_tab2_830_1050_init() */
 751 static struct rmi_device_platform_data lenovo_yoga_tab2_830_1050_rmi_pdata = { };
 752
 753 static struct lp855x_platform_data lenovo_yoga_tab2_830_1050_lp8557_pdata = {
 754         .device_control = 0x86,
 755         .initial_brightness = 128,
 756 };
 757
 758 static const struct x86_i2c_client_info lenovo_yoga_tab2_830_1050_i2c_clients[] __initconst = {
 759         {
 760                 /* bq24292i battery charger */
 761                 .board_info = {
 762                         .type = "bq24190",
 763                         .addr = 0x6b,
 764                         .dev_name = "bq24292i",
 765                         .swnode = &lenovo_yoga_tab2_830_1050_bq24190_node,
 766                         .platform_data = &bq24190_pdata,
 767                 },
 768                 .adapter_path = "\\_SB_.I2C1",
 769                 .irq_data = {
 770                         .type = X86_ACPI_IRQ_TYPE_GPIOINT,
 771                         .chip = "INT33FC:02",
 772                         .index = 2,
 773                         .trigger = ACPI_EDGE_SENSITIVE,
 774                         .polarity = ACPI_ACTIVE_HIGH,
 775                 },
 776         }, {
 777                 /* BQ27541 fuel-gauge */
 778                 .board_info = {
 779                         .type = "bq27541",
 780                         .addr = 0x55,
 781                         .dev_name = "bq27541",
 782                         .swnode = &fg_bq24190_supply_node,
 783                 },
 784                 .adapter_path = "\\_SB_.I2C1",
 785         }, {
 786                 /* Synaptics RMI touchscreen */
 787                 .board_info = {
 788                         .type = "rmi4_i2c",
 789                         .addr = 0x38,
 790                         .dev_name = "rmi4_i2c",
 791                         .platform_data = &lenovo_yoga_tab2_830_1050_rmi_pdata,
 792                 },
 793                 .adapter_path = "\\_SB_.I2C6",
 794                 .irq_data = {
 795                         .type = X86_ACPI_IRQ_TYPE_APIC,
 796                         .index = 0x45,
 797                         .trigger = ACPI_EDGE_SENSITIVE,
 798                         .polarity = ACPI_ACTIVE_HIGH,
 799                 },
 800         }, {
 801                 /* LP8557 Backlight controller */
 802                 .board_info = {
 803                         .type = "lp8557",
 804                         .addr = 0x2c,
 805                         .dev_name = "lp8557",
 806                         .platform_data = &lenovo_yoga_tab2_830_1050_lp8557_pdata,
 807                 },
 808                 .adapter_path = "\\_SB_.I2C3",
 809         },
 810 };
 811
 812 static struct gpiod_lookup_table lenovo_yoga_tab2_830_1050_int3496_gpios = {
 813         .dev_id = "intel-int3496",
 814         .table = {
 815                 GPIO_LOOKUP("INT33FC:02", 1, "mux", GPIO_ACTIVE_LOW),
 816                 GPIO_LOOKUP("INT33FC:02", 24, "id", GPIO_ACTIVE_HIGH),
 817                 { }
 818         },
 819 };
 820
 821 #define LENOVO_YOGA_TAB2_830_1050_CODEC_NAME "spi-10WM5102:00"
 822
 823 static struct gpiod_lookup_table lenovo_yoga_tab2_830_1050_codec_gpios = {
 824         .dev_id = LENOVO_YOGA_TAB2_830_1050_CODEC_NAME,
 825         .table = {
 826                 GPIO_LOOKUP("gpio_crystalcove", 3, "reset", GPIO_ACTIVE_HIGH),
 827                 GPIO_LOOKUP("INT33FC:01", 23, "wlf,ldoena", GPIO_ACTIVE_HIGH),
 828                 GPIO_LOOKUP("arizona", 2, "wlf,spkvdd-ena", GPIO_ACTIVE_HIGH),
 829                 GPIO_LOOKUP("arizona", 4, "wlf,micd-pol", GPIO_ACTIVE_LOW),
 830                 { }
 831         },
 832 };
 833
 834 static struct gpiod_lookup_table * const lenovo_yoga_tab2_830_1050_gpios[] = {
 835         &lenovo_yoga_tab2_830_1050_int3496_gpios,
 836         &lenovo_yoga_tab2_830_1050_codec_gpios,
 837         NULL
 838 };
 839
 840 static int __init lenovo_yoga_tab2_830_1050_init(void);
 841 static void lenovo_yoga_tab2_830_1050_exit(void);
 842
 843 static struct x86_dev_info lenovo_yoga_tab2_830_1050_info __initdata = {
 844         .i2c_client_info = lenovo_yoga_tab2_830_1050_i2c_clients,
 845         /* i2c_client_count gets set by lenovo_yoga_tab2_830_1050_init() */
 846         .pdev_info = int3496_pdevs,
 847         .pdev_count = ARRAY_SIZE(int3496_pdevs),
 848         .gpiod_lookup_tables = lenovo_yoga_tab2_830_1050_gpios,
 849         .bat_swnode = &generic_lipo_hv_4v35_battery_node,
 850         .modules = bq24190_modules,
 851         .invalid_aei_gpiochip = "INT33FC:02",
 852         .init = lenovo_yoga_tab2_830_1050_init,
 853         .exit = lenovo_yoga_tab2_830_1050_exit,
 854 };
 855
 856 /*
 857  * The Lenovo Yoga Tablet 2 830 and 1050 (8" vs 10") versions use the same
 858  * mainboard, but they need some different treatment related to the display:
 859  * 1. The 830 uses a portrait LCD panel with a landscape touchscreen, requiring
 860  *    the touchscreen driver to adjust the touch-coords to match the LCD.
 861  * 2. Both use an TI LP8557 LED backlight controller. On the 1050 the LP8557's
 862  *    PWM input is connected to the PMIC's PWM output and everything works fine
 863  *    with the defaults programmed into the LP8557 by the BIOS.
 864  *    But on the 830 the LP8557's PWM input is connected to a PWM output coming
 865  *    from the LCD panel's controller. The Android code has a hack in the i915
 866  *    driver to write the non-standard DSI reg 0x9f with the desired backlight
 867  *    level to set the duty-cycle of the LCD's PWM output.
 868  *
 869  *    To avoid having to have a similar hack in the mainline kernel the LP8557
 870  *    entry in lenovo_yoga_tab2_830_1050_i2c_clients instead just programs the
 871  *    LP8557 to directly set the level, ignoring the PWM input. This means that
 872  *    the LP8557 i2c_client should only be instantiated on the 830.
 873  */
 874 static int __init lenovo_yoga_tab2_830_1050_init_display(void)
 875 {
 876         struct gpio_desc *gpiod;
 877         int ret;
 878
 879         /* Use PMIC GPIO 10 bootstrap pin to differentiate 830 vs 1050 */
 880         ret = x86_android_tablet_get_gpiod("gpio_crystalcove", 10, &gpiod);
 881         if (ret)
 882                 return ret;
 883
 884         ret = gpiod_get_value_cansleep(gpiod);
 885         if (ret) {
 886                 pr_info("detected Lenovo Yoga Tablet 2 1050F/L\n");
 887                 lenovo_yoga_tab2_830_1050_info.i2c_client_count =
 888                         ARRAY_SIZE(lenovo_yoga_tab2_830_1050_i2c_clients) - 1;
 889         } else {
 890                 pr_info("detected Lenovo Yoga Tablet 2 830F/L\n");
 891                 lenovo_yoga_tab2_830_1050_rmi_pdata.sensor_pdata.axis_align.swap_axes = true;
 892                 lenovo_yoga_tab2_830_1050_rmi_pdata.sensor_pdata.axis_align.flip_y = true;
 893                 lenovo_yoga_tab2_830_1050_info.i2c_client_count =
 894                         ARRAY_SIZE(lenovo_yoga_tab2_830_1050_i2c_clients);
 895         }
 896
 897         return 0;
 898 }
 899
 900 /* SUS (INT33FC:02) pin 6 needs to be configured as pmu_clk for the audio codec */
 901 static const struct pinctrl_map lenovo_yoga_tab2_830_1050_codec_pinctrl_map =
 902         PIN_MAP_MUX_GROUP(LENOVO_YOGA_TAB2_830_1050_CODEC_NAME, "codec_32khz_clk",
 903                           "INT33FC:02", "pmu_clk2_grp", "pmu_clk");
 904
 905 static struct pinctrl *lenovo_yoga_tab2_830_1050_codec_pinctrl;
 906 static struct sys_off_handler *lenovo_yoga_tab2_830_1050_sys_off_handler;
 907
 908 static int __init lenovo_yoga_tab2_830_1050_init_codec(void)
 909 {
 910         struct device *codec_dev;
 911         struct pinctrl *pinctrl;
 912         int ret;
 913
 914         codec_dev = bus_find_device_by_name(&spi_bus_type, NULL,
 915                                             LENOVO_YOGA_TAB2_830_1050_CODEC_NAME);
 916         if (!codec_dev) {
 917                 pr_err("error cannot find %s device\n", LENOVO_YOGA_TAB2_830_1050_CODEC_NAME);
 918                 return -ENODEV;
 919         }
 920
 921         ret = pinctrl_register_mappings(&lenovo_yoga_tab2_830_1050_codec_pinctrl_map, 1);
 922         if (ret)
 923                 goto err_put_device;
 924
 925         pinctrl = pinctrl_get_select(codec_dev, "codec_32khz_clk");
 926         if (IS_ERR(pinctrl)) {
 927                 ret = dev_err_probe(codec_dev, PTR_ERR(pinctrl), "selecting codec_32khz_clk\n");
 928                 goto err_unregister_mappings;
 929         }
 930
 931         /* We're done with the codec_dev now */
 932         put_device(codec_dev);
 933
 934         lenovo_yoga_tab2_830_1050_codec_pinctrl = pinctrl;
 935         return 0;
 936
 937 err_unregister_mappings:
 938         pinctrl_unregister_mappings(&lenovo_yoga_tab2_830_1050_codec_pinctrl_map);
 939 err_put_device:
 940         put_device(codec_dev);
 941         return ret;
 942 }
 943
 944 /*
 945  * These tablet's DSDT does not set acpi_gbl_reduced_hardware, so acpi_power_off
 946  * gets used as pm_power_off handler. This causes "poweroff" on these tablets
 947  * to hang hard. Requiring pressing the powerbutton for 30 seconds *twice*
 948  * followed by a normal 3 second press to recover. Avoid this by doing an EFI
 949  * poweroff instead.
 950  */
 951 static int lenovo_yoga_tab2_830_1050_power_off(struct sys_off_data *data)
 952 {
 953         efi.reset_system(EFI_RESET_SHUTDOWN, EFI_SUCCESS, 0, NULL);
 954
 955         return NOTIFY_DONE;
 956 }
 957
 958 static int __init lenovo_yoga_tab2_830_1050_init(void)
 959 {
 960         int ret;
 961
 962         ret = lenovo_yoga_tab2_830_1050_init_display();
 963         if (ret)
 964                 return ret;
 965
 966         ret = lenovo_yoga_tab2_830_1050_init_codec();
 967         if (ret)
 968                 return ret;
 969
 970         /* SYS_OFF_PRIO_FIRMWARE + 1 so that it runs before acpi_power_off */
 971         lenovo_yoga_tab2_830_1050_sys_off_handler =
 972                 register_sys_off_handler(SYS_OFF_MODE_POWER_OFF, SYS_OFF_PRIO_FIRMWARE + 1,
 973                                          lenovo_yoga_tab2_830_1050_power_off, NULL);
 974         if (IS_ERR(lenovo_yoga_tab2_830_1050_sys_off_handler))
 975                 return PTR_ERR(lenovo_yoga_tab2_830_1050_sys_off_handler);
 976
 977         return 0;
 978 }
 979
 980 static void lenovo_yoga_tab2_830_1050_exit(void)
 981 {
 982         unregister_sys_off_handler(lenovo_yoga_tab2_830_1050_sys_off_handler);
 983
 984         if (lenovo_yoga_tab2_830_1050_codec_pinctrl) {
 985                 pinctrl_put(lenovo_yoga_tab2_830_1050_codec_pinctrl);
 986                 pinctrl_unregister_mappings(&lenovo_yoga_tab2_830_1050_codec_pinctrl_map);
 987         }
 988 }
 989
 990 /* Nextbook Ares 8 tablets have an Android factory img with everything hardcoded */
 991 static const char * const nextbook_ares8_accel_mount_matrix[] = {
 992         "0", "-1", "0",
 993         "-1", "0", "0",
 994         "0", "0", "1"
 995 };
 996
 997 static const struct property_entry nextbook_ares8_accel_props[] = {
 998         PROPERTY_ENTRY_STRING_ARRAY("mount-matrix", nextbook_ares8_accel_mount_matrix),
 999         { }
1000 };
1001
1002 static const struct software_node nextbook_ares8_accel_node = {
1003         .properties = nextbook_ares8_accel_props,
1004 };
1005
1006 static const struct property_entry nextbook_ares8_touchscreen_props[] = {
1007         PROPERTY_ENTRY_U32("touchscreen-size-x", 800),
1008         PROPERTY_ENTRY_U32("touchscreen-size-y", 1280),
1009         { }
1010 };
1011
1012 static const struct software_node nextbook_ares8_touchscreen_node = {
1013         .properties = nextbook_ares8_touchscreen_props,
1014 };
1015
1016 static const struct x86_i2c_client_info nextbook_ares8_i2c_clients[] __initconst = {
1017         {
1018                 /* Freescale MMA8653FC accel */
1019                 .board_info = {
1020                         .type = "mma8653",
1021                         .addr = 0x1d,
1022                         .dev_name = "mma8653",
1023                         .swnode = &nextbook_ares8_accel_node,
1024                 },
1025                 .adapter_path = "\\_SB_.I2C3",
1026         }, {
1027                 /* FT5416DQ9 touchscreen controller */
1028                 .board_info = {
1029                         .type = "edt-ft5x06",
1030                         .addr = 0x38,
1031                         .dev_name = "ft5416",
1032                         .swnode = &nextbook_ares8_touchscreen_node,
1033                 },
1034                 .adapter_path = "\\_SB_.I2C4",
1035                 .irq_data = {
1036                         .type = X86_ACPI_IRQ_TYPE_GPIOINT,
1037                         .chip = "INT33FC:02",
1038                         .index = 3,
1039                         .trigger = ACPI_EDGE_SENSITIVE,
1040                         .polarity = ACPI_ACTIVE_LOW,
1041                 },
1042         },
1043 };
1044
1045 static struct gpiod_lookup_table nextbook_ares8_int3496_gpios = {
1046         .dev_id = "intel-int3496",
1047         .table = {
1048                 GPIO_LOOKUP("INT33FC:02", 1, "mux", GPIO_ACTIVE_HIGH),
1049                 GPIO_LOOKUP("INT33FC:02", 18, "id", GPIO_ACTIVE_HIGH),
1050                 { }
1051         },
1052 };
1053
1054 static struct gpiod_lookup_table * const nextbook_ares8_gpios[] = {
1055         &nextbook_ares8_int3496_gpios,
1056         NULL
1057 };
1058
1059 static const struct x86_dev_info nextbook_ares8_info __initconst = {
1060         .i2c_client_info = nextbook_ares8_i2c_clients,
1061         .i2c_client_count = ARRAY_SIZE(nextbook_ares8_i2c_clients),
1062         .pdev_info = int3496_pdevs,
1063         .pdev_count = ARRAY_SIZE(int3496_pdevs),
1064         .gpiod_lookup_tables = nextbook_ares8_gpios,
1065         .invalid_aei_gpiochip = "INT33FC:02",
1066 };
1067
1068 /*
1069  * Whitelabel (sold as various brands) TM800A550L tablets.
1070  * These tablet's DSDT contains a whole bunch of bogus ACPI I2C devices
1071  * (removed through acpi_quirk_skip_i2c_client_enumeration()) and
1072  * the touchscreen fwnode has the wrong GPIOs.
1073  */
1074 static const char * const whitelabel_tm800a550l_accel_mount_matrix[] = {
1075         "-1", "0", "0",
1076         "0", "1", "0",
1077         "0", "0", "1"
1078 };
1079
1080 static const struct property_entry whitelabel_tm800a550l_accel_props[] = {
1081         PROPERTY_ENTRY_STRING_ARRAY("mount-matrix", whitelabel_tm800a550l_accel_mount_matrix),
1082         { }
1083 };
1084
1085 static const struct software_node whitelabel_tm800a550l_accel_node = {
1086         .properties = whitelabel_tm800a550l_accel_props,
1087 };
1088
1089 static const struct property_entry whitelabel_tm800a550l_goodix_props[] = {
1090         PROPERTY_ENTRY_STRING("firmware-name", "gt912-tm800a550l.fw"),
1091         PROPERTY_ENTRY_STRING("goodix,config-name", "gt912-tm800a550l.cfg"),
1092         PROPERTY_ENTRY_U32("goodix,main-clk", 54),
1093         { }
1094 };
1095
1096 static const struct software_node whitelabel_tm800a550l_goodix_node = {
1097         .properties = whitelabel_tm800a550l_goodix_props,
1098 };
1099
1100 static const struct x86_i2c_client_info whitelabel_tm800a550l_i2c_clients[] __initconst = {
1101         {
1102                 /* goodix touchscreen */
1103                 .board_info = {
1104                         .type = "GDIX1001:00",
1105                         .addr = 0x14,
1106                         .dev_name = "goodix_ts",
1107                         .swnode = &whitelabel_tm800a550l_goodix_node,
1108                 },
1109                 .adapter_path = "\\_SB_.I2C2",
1110                 .irq_data = {
1111                         .type = X86_ACPI_IRQ_TYPE_APIC,
1112                         .index = 0x44,
1113                         .trigger = ACPI_EDGE_SENSITIVE,
1114                         .polarity = ACPI_ACTIVE_HIGH,
1115                 },
1116         }, {
1117                 /* kxcj91008 accel */
1118                 .board_info = {
1119                         .type = "kxcj91008",
1120                         .addr = 0x0f,
1121                         .dev_name = "kxcj91008",
1122                         .swnode = &whitelabel_tm800a550l_accel_node,
1123                 },
1124                 .adapter_path = "\\_SB_.I2C3",
1125         },
1126 };
1127
1128 static struct gpiod_lookup_table whitelabel_tm800a550l_goodix_gpios = {
1129         .dev_id = "i2c-goodix_ts",
1130         .table = {
1131                 GPIO_LOOKUP("INT33FC:01", 26, "reset", GPIO_ACTIVE_HIGH),
1132                 GPIO_LOOKUP("INT33FC:02", 3, "irq", GPIO_ACTIVE_HIGH),
1133                 { }
1134         },
1135 };
1136
1137 static struct gpiod_lookup_table * const whitelabel_tm800a550l_gpios[] = {
1138         &whitelabel_tm800a550l_goodix_gpios,
1139         NULL
1140 };
1141
1142 static const struct x86_dev_info whitelabel_tm800a550l_info __initconst = {
1143         .i2c_client_info = whitelabel_tm800a550l_i2c_clients,
1144         .i2c_client_count = ARRAY_SIZE(whitelabel_tm800a550l_i2c_clients),
1145         .gpiod_lookup_tables = whitelabel_tm800a550l_gpios,
1146 };
1147
1148 /*
1149  * If the EFI bootloader is not Xiaomi's own signed Android loader, then the
1150  * Xiaomi Mi Pad 2 X86 tablet sets OSID in the DSDT to 1 (Windows), causing
1151  * a bunch of devices to be hidden.
1152  *
1153  * This takes care of instantiating the hidden devices manually.
1154  */
1155 static const struct x86_i2c_client_info xiaomi_mipad2_i2c_clients[] __initconst = {
1156         {
1157                 /* BQ27520 fuel-gauge */
1158                 .board_info = {
1159                         .type = "bq27520",
1160                         .addr = 0x55,
1161                         .dev_name = "bq27520",
1162                         .swnode = &fg_bq25890_supply_node,
1163                 },
1164                 .adapter_path = "\\_SB_.PCI0.I2C1",
1165         }, {
1166                 /* KTD2026 RGB notification LED controller */
1167                 .board_info = {
1168                         .type = "ktd2026",
1169                         .addr = 0x30,
1170                         .dev_name = "ktd2026",
1171                 },
1172                 .adapter_path = "\\_SB_.PCI0.I2C3",
1173         },
1174 };
1175
1176 static const struct x86_dev_info xiaomi_mipad2_info __initconst = {
1177         .i2c_client_info = xiaomi_mipad2_i2c_clients,
1178         .i2c_client_count = ARRAY_SIZE(xiaomi_mipad2_i2c_clients),
1179 };
1180
1181 static const struct dmi_system_id x86_android_tablet_ids[] __initconst = {
1182         {
1183                 /* Asus MeMO Pad 7 ME176C */
1184                 .matches = {
1185                         DMI_EXACT_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
1186                         DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "ME176C"),
1187                 },
1188                 .driver_data = (void *)&asus_me176c_info,
1189         },
1190         {
1191                 /* Asus TF103C */
1192                 .matches = {
1193                         DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
1194                         DMI_MATCH(DMI_PRODUCT_NAME, "TF103C"),
1195                 },
1196                 .driver_data = (void *)&asus_tf103c_info,
1197         },
1198         {
1199                 /* Chuwi Hi8 (CWI509) */
1200                 .matches = {
1201                         DMI_MATCH(DMI_BOARD_VENDOR, "Hampoo"),
1202                         DMI_MATCH(DMI_BOARD_NAME, "BYT-PA03C"),
1203                         DMI_MATCH(DMI_SYS_VENDOR, "ilife"),
1204                         DMI_MATCH(DMI_PRODUCT_NAME, "S806"),
1205                 },
1206                 .driver_data = (void *)&chuwi_hi8_info,
1207         },
1208         {
1209                 /* CZC P10T */
1210                 .ident = "CZC ODEON TPC-10 (\"P10T\")",
1211                 .matches = {
1212                         DMI_MATCH(DMI_SYS_VENDOR, "CZC"),
1213                         DMI_MATCH(DMI_PRODUCT_NAME, "ODEON*TPC-10"),
1214                 },
1215                 .driver_data = (void *)&czc_p10t,
1216         },
1217         {
1218                 /* CZC P10T variant */
1219                 .ident = "ViewSonic ViewPad 10",
1220                 .matches = {
1221                         DMI_MATCH(DMI_SYS_VENDOR, "ViewSonic"),
1222                         DMI_MATCH(DMI_PRODUCT_NAME, "VPAD10"),
1223                 },
1224                 .driver_data = (void *)&czc_p10t,
1225         },
1226         {
1227                 /* Lenovo Yoga Book X90F / X91F / X91L */
1228                 .matches = {
1229                         /* Non exact match to match all versions */
1230                         DMI_MATCH(DMI_PRODUCT_NAME, "Lenovo YB1-X9"),
1231                 },
1232                 .driver_data = (void *)&lenovo_yogabook_x9x_info,
1233         },
1234         {
1235                 /*
1236                  * Lenovo Yoga Tablet 2 830F/L or 1050F/L (The 8" and 10"
1237                  * Lenovo Yoga Tablet 2 use the same mainboard)
1238                  */
1239                 .matches = {
1240                         DMI_MATCH(DMI_SYS_VENDOR, "Intel Corp."),
1241                         DMI_MATCH(DMI_PRODUCT_NAME, "VALLEYVIEW C0 PLATFORM"),
1242                         DMI_MATCH(DMI_BOARD_NAME, "BYT-T FFD8"),
1243                         /* Partial match on beginning of BIOS version */
1244                         DMI_MATCH(DMI_BIOS_VERSION, "BLADE_21"),
1245                 },
1246                 .driver_data = (void *)&lenovo_yoga_tab2_830_1050_info,
1247         },
1248         {
1249                 /* Nextbook Ares 8 */
1250                 .matches = {
1251                         DMI_MATCH(DMI_SYS_VENDOR, "Insyde"),
1252                         DMI_MATCH(DMI_PRODUCT_NAME, "M890BAP"),
1253                 },
1254                 .driver_data = (void *)&nextbook_ares8_info,
1255         },
1256         {
1257                 /* Whitelabel (sold as various brands) TM800A550L */
1258                 .matches = {
1259                         DMI_MATCH(DMI_BOARD_VENDOR, "AMI Corporation"),
1260                         DMI_MATCH(DMI_BOARD_NAME, "Aptio CRB"),
1261                         /* Above strings are too generic, also match on BIOS version */
1262                         DMI_MATCH(DMI_BIOS_VERSION, "ZY-8-BI-PX4S70VTR400-X423B-005-D"),
1263                 },
1264                 .driver_data = (void *)&whitelabel_tm800a550l_info,
1265         },
1266         {
1267                 /* Xiaomi Mi Pad 2 */
1268                 .matches = {
1269                         DMI_MATCH(DMI_SYS_VENDOR, "Xiaomi Inc"),
1270                         DMI_MATCH(DMI_PRODUCT_NAME, "Mipad2"),
1271                 },
1272                 .driver_data = (void *)&xiaomi_mipad2_info,
1273         },
1274         { }
1275 };
1276 MODULE_DEVICE_TABLE(dmi, x86_android_tablet_ids);
1277
1278 static int i2c_client_count;
1279 static int pdev_count;
1280 static int serdev_count;
1281 static struct i2c_client **i2c_clients;
1282 static struct platform_device **pdevs;
1283 static struct serdev_device **serdevs;
1284 static struct gpiod_lookup_table * const *gpiod_lookup_tables;
1285 static const struct software_node *bat_swnode;
1286 static void (*exit_handler)(void);
1287
1288 static __init int x86_instantiate_i2c_client(const struct x86_dev_info *dev_info,
1289                                              int idx)
1290 {
1291         const struct x86_i2c_client_info *client_info = &dev_info->i2c_client_info[idx];
1292         struct i2c_board_info board_info = client_info->board_info;
1293         struct i2c_adapter *adap;
1294         acpi_handle handle;
1295         acpi_status status;
1296
1297         board_info.irq = x86_acpi_irq_helper_get(&client_info->irq_data);
1298         if (board_info.irq < 0)
1299                 return board_info.irq;
1300
1301         status = acpi_get_handle(NULL, client_info->adapter_path, &handle);
1302         if (ACPI_FAILURE(status)) {
1303                 pr_err("Error could not get %s handle\n", client_info->adapter_path);
1304                 return -ENODEV;
1305         }
1306
1307         adap = i2c_acpi_find_adapter_by_handle(handle);
1308         if (!adap) {
1309                 pr_err("error could not get %s adapter\n", client_info->adapter_path);
1310                 return -ENODEV;
1311         }
1312
1313         i2c_clients[idx] = i2c_new_client_device(adap, &board_info);
1314         put_device(&adap->dev);
1315         if (IS_ERR(i2c_clients[idx]))
1316                 return dev_err_probe(&adap->dev, PTR_ERR(i2c_clients[idx]),
1317                                       "creating I2C-client %d\n", idx);
1318
1319         return 0;
1320 }
1321
1322 static __init int x86_instantiate_serdev(const struct x86_serdev_info *info, int idx)
1323 {
1324         struct acpi_device *ctrl_adev, *serdev_adev;
1325         struct serdev_device *serdev;
1326         struct device *ctrl_dev;
1327         int ret = -ENODEV;
1328
1329         ctrl_adev = acpi_dev_get_first_match_dev(info->ctrl_hid, info->ctrl_uid, -1);
1330         if (!ctrl_adev) {
1331                 pr_err("error could not get %s/%s ctrl adev\n",
1332                        info->ctrl_hid, info->ctrl_uid);
1333                 return -ENODEV;
1334         }
1335
1336         serdev_adev = acpi_dev_get_first_match_dev(info->serdev_hid, NULL, -1);
1337         if (!serdev_adev) {
1338                 pr_err("error could not get %s serdev adev\n", info->serdev_hid);
1339                 goto put_ctrl_adev;
1340         }
1341
1342         /* get_first_physical_node() returns a weak ref, no need to put() it */
1343         ctrl_dev = acpi_get_first_physical_node(ctrl_adev);
1344         if (!ctrl_dev)  {
1345                 pr_err("error could not get %s/%s ctrl physical dev\n",
1346                        info->ctrl_hid, info->ctrl_uid);
1347                 goto put_serdev_adev;
1348         }
1349
1350         /* ctrl_dev now points to the controller's parent, get the controller */
1351         ctrl_dev = device_find_child_by_name(ctrl_dev, info->ctrl_devname);
1352         if (!ctrl_dev) {
1353                 pr_err("error could not get %s/%s %s ctrl dev\n",
1354                        info->ctrl_hid, info->ctrl_uid, info->ctrl_devname);
1355                 goto put_serdev_adev;
1356         }
1357
1358         serdev = serdev_device_alloc(to_serdev_controller(ctrl_dev));
1359         if (!serdev) {
1360                 ret = -ENOMEM;
1361                 goto put_serdev_adev;
1362         }
1363
1364         ACPI_COMPANION_SET(&serdev->dev, serdev_adev);
1365         acpi_device_set_enumerated(serdev_adev);
1366
1367         ret = serdev_device_add(serdev);
1368         if (ret) {
1369                 dev_err(&serdev->dev, "error %d adding serdev\n", ret);
1370                 serdev_device_put(serdev);
1371                 goto put_serdev_adev;
1372         }
1373
1374         serdevs[idx] = serdev;
1375
1376 put_serdev_adev:
1377         acpi_dev_put(serdev_adev);
1378 put_ctrl_adev:
1379         acpi_dev_put(ctrl_adev);
1380         return ret;
1381 }
1382
1383 static void x86_android_tablet_cleanup(void)
1384 {
1385         int i;
1386
1387         for (i = 0; i < serdev_count; i++) {
1388                 if (serdevs[i])
1389                         serdev_device_remove(serdevs[i]);
1390         }
1391
1392         kfree(serdevs);
1393
1394         for (i = 0; i < pdev_count; i++)
1395                 platform_device_unregister(pdevs[i]);
1396
1397         kfree(pdevs);
1398
1399         for (i = 0; i < i2c_client_count; i++)
1400                 i2c_unregister_device(i2c_clients[i]);
1401
1402         kfree(i2c_clients);
1403
1404         if (exit_handler)
1405                 exit_handler();
1406
1407         for (i = 0; gpiod_lookup_tables && gpiod_lookup_tables[i]; i++)
1408                 gpiod_remove_lookup_table(gpiod_lookup_tables[i]);
1409
1410         software_node_unregister(bat_swnode);
1411 }
1412
1413 static __init int x86_android_tablet_init(void)
1414 {
1415         const struct x86_dev_info *dev_info;
1416         const struct dmi_system_id *id;
1417         struct gpio_chip *chip;
1418         int i, ret = 0;
1419
1420         id = dmi_first_match(x86_android_tablet_ids);
1421         if (!id)
1422                 return -ENODEV;
1423
1424         dev_info = id->driver_data;
1425
1426         /*
1427          * The broken DSDTs on these devices often also include broken
1428          * _AEI (ACPI Event Interrupt) handlers, disable these.
1429          */
1430         if (dev_info->invalid_aei_gpiochip) {
1431                 chip = gpiochip_find(dev_info->invalid_aei_gpiochip,
1432                                      gpiochip_find_match_label);
1433                 if (!chip) {
1434                         pr_err("error cannot find GPIO chip %s\n", dev_info->invalid_aei_gpiochip);
1435                         return -ENODEV;
1436                 }
1437                 acpi_gpiochip_free_interrupts(chip);
1438         }
1439
1440         /*
1441          * Since this runs from module_init() it cannot use -EPROBE_DEFER,
1442          * instead pre-load any modules which are listed as requirements.
1443          */
1444         for (i = 0; dev_info->modules && dev_info->modules[i]; i++)
1445                 request_module(dev_info->modules[i]);
1446
1447         bat_swnode = dev_info->bat_swnode;
1448         if (bat_swnode) {
1449                 ret = software_node_register(bat_swnode);
1450                 if (ret)
1451                         return ret;
1452         }
1453
1454         gpiod_lookup_tables = dev_info->gpiod_lookup_tables;
1455         for (i = 0; gpiod_lookup_tables && gpiod_lookup_tables[i]; i++)
1456                 gpiod_add_lookup_table(gpiod_lookup_tables[i]);
1457
1458         if (dev_info->init) {
1459                 ret = dev_info->init();
1460                 if (ret < 0) {
1461                         x86_android_tablet_cleanup();
1462                         return ret;
1463                 }
1464                 exit_handler = dev_info->exit;
1465         }
1466
1467         i2c_clients = kcalloc(dev_info->i2c_client_count, sizeof(*i2c_clients), GFP_KERNEL);
1468         if (!i2c_clients) {
1469                 x86_android_tablet_cleanup();
1470                 return -ENOMEM;
1471         }
1472
1473         i2c_client_count = dev_info->i2c_client_count;
1474         for (i = 0; i < i2c_client_count; i++) {
1475                 ret = x86_instantiate_i2c_client(dev_info, i);
1476                 if (ret < 0) {
1477                         x86_android_tablet_cleanup();
1478                         return ret;
1479                 }
1480         }
1481
1482         pdevs = kcalloc(dev_info->pdev_count, sizeof(*pdevs), GFP_KERNEL);
1483         if (!pdevs) {
1484                 x86_android_tablet_cleanup();
1485                 return -ENOMEM;
1486         }
1487
1488         pdev_count = dev_info->pdev_count;
1489         for (i = 0; i < pdev_count; i++) {
1490                 pdevs[i] = platform_device_register_full(&dev_info->pdev_info[i]);
1491                 if (IS_ERR(pdevs[i])) {
1492                         x86_android_tablet_cleanup();
1493                         return PTR_ERR(pdevs[i]);
1494                 }
1495         }
1496
1497         serdevs = kcalloc(dev_info->serdev_count, sizeof(*serdevs), GFP_KERNEL);
1498         if (!serdevs) {
1499                 x86_android_tablet_cleanup();
1500                 return -ENOMEM;
1501         }
1502
1503         serdev_count = dev_info->serdev_count;
1504         for (i = 0; i < serdev_count; i++) {
1505                 ret = x86_instantiate_serdev(&dev_info->serdev_info[i], i);
1506                 if (ret < 0) {
1507                         x86_android_tablet_cleanup();
1508                         return ret;
1509                 }
1510         }
1511
1512         return 0;
1513 }
1514
1515 module_init(x86_android_tablet_init);
1516 module_exit(x86_android_tablet_cleanup);
1517
1518 MODULE_AUTHOR("Hans de Goede <hdegoede@redhat.com>");
1519 MODULE_DESCRIPTION("X86 Android tablets DSDT fixups driver");
1520 MODULE_LICENSE("GPL");