drivers/platform/x86/ideapad-laptop.c

   1 /*
   2  *  ideapad-laptop.c - Lenovo IdeaPad ACPI Extras
   3  *
   4  *  Copyright © 2010 Intel Corporation
   5  *  Copyright © 2010 David Woodhouse <dwmw2@infradead.org>
   6  *
   7  *  This program is free software; you can redistribute it and/or modify
   8  *  it under the terms of the GNU General Public License as published by
   9  *  the Free Software Foundation; either version 2 of the License, or
  10  *  (at your option) any later version.
  11  *
  12  *  This program is distributed in the hope that it will be useful,
  13  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  *  GNU General Public License for more details.
  16  *
  17  *  You should have received a copy of the GNU General Public License
  18  *  along with this program; if not, write to the Free Software
  19  *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  20  *  02110-1301, USA.
  21  */
  22
  23 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  24
  25 #include <linux/kernel.h>
  26 #include <linux/module.h>
  27 #include <linux/init.h>
  28 #include <linux/types.h>
  29 #include <linux/acpi.h>
  30 #include <linux/rfkill.h>
  31 #include <linux/platform_device.h>
  32 #include <linux/input.h>
  33 #include <linux/input/sparse-keymap.h>
  34 #include <linux/backlight.h>
  35 #include <linux/fb.h>
  36 #include <linux/debugfs.h>
  37 #include <linux/seq_file.h>
  38 #include <linux/i8042.h>
  39 #include <linux/dmi.h>
  40 #include <linux/device.h>
  41 #include <acpi/video.h>
  42
  43 #define IDEAPAD_RFKILL_DEV_NUM  (3)
  44
  45 #define BM_CONSERVATION_BIT (5)
  46
  47 #define CFG_BT_BIT      (16)
  48 #define CFG_3G_BIT      (17)
  49 #define CFG_WIFI_BIT    (18)
  50 #define CFG_CAMERA_BIT  (19)
  51
  52 #if IS_ENABLED(CONFIG_ACPI_WMI)
  53 static const char *const ideapad_wmi_fnesc_events[] = {
  54         "26CAB2E5-5CF1-46AE-AAC3-4A12B6BA50E6", /* Yoga 3 */
  55         "56322276-8493-4CE8-A783-98C991274F5E", /* Yoga 700 */
  56 };
  57 #endif
  58
  59 enum {
  60         BMCMD_CONSERVATION_ON = 3,
  61         BMCMD_CONSERVATION_OFF = 5,
  62 };
  63
  64 enum {
  65         VPCCMD_R_VPC1 = 0x10,
  66         VPCCMD_R_BL_MAX,
  67         VPCCMD_R_BL,
  68         VPCCMD_W_BL,
  69         VPCCMD_R_WIFI,
  70         VPCCMD_W_WIFI,
  71         VPCCMD_R_BT,
  72         VPCCMD_W_BT,
  73         VPCCMD_R_BL_POWER,
  74         VPCCMD_R_NOVO,
  75         VPCCMD_R_VPC2,
  76         VPCCMD_R_TOUCHPAD,
  77         VPCCMD_W_TOUCHPAD,
  78         VPCCMD_R_CAMERA,
  79         VPCCMD_W_CAMERA,
  80         VPCCMD_R_3G,
  81         VPCCMD_W_3G,
  82         VPCCMD_R_ODD, /* 0x21 */
  83         VPCCMD_W_FAN,
  84         VPCCMD_R_RF,
  85         VPCCMD_W_RF,
  86         VPCCMD_R_FAN = 0x2B,
  87         VPCCMD_R_SPECIAL_BUTTONS = 0x31,
  88         VPCCMD_W_BL_POWER = 0x33,
  89 };
  90
  91 struct ideapad_rfk_priv {
  92         int dev;
  93         struct ideapad_private *priv;
  94 };
  95
  96 struct ideapad_private {
  97         struct acpi_device *adev;
  98         struct rfkill *rfk[IDEAPAD_RFKILL_DEV_NUM];
  99         struct ideapad_rfk_priv rfk_priv[IDEAPAD_RFKILL_DEV_NUM];
 100         struct platform_device *platform_device;
 101         struct input_dev *inputdev;
 102         struct backlight_device *blightdev;
 103         struct dentry *debug;
 104         unsigned long cfg;
 105         bool has_hw_rfkill_switch;
 106         const char *fnesc_guid;
 107 };
 108
 109 static bool no_bt_rfkill;
 110 module_param(no_bt_rfkill, bool, 0444);
 111 MODULE_PARM_DESC(no_bt_rfkill, "No rfkill for bluetooth.");
 112
 113 /*
 114  * ACPI Helpers
 115  */
 116 #define IDEAPAD_EC_TIMEOUT (100) /* in ms */
 117
 118 static int read_method_int(acpi_handle handle, const char *method, int *val)
 119 {
 120         acpi_status status;
 121         unsigned long long result;
 122
 123         status = acpi_evaluate_integer(handle, (char *)method, NULL, &result);
 124         if (ACPI_FAILURE(status)) {
 125                 *val = -1;
 126                 return -1;
 127         }
 128         *val = result;
 129         return 0;
 130
 131 }
 132
 133 static int method_gbmd(acpi_handle handle, unsigned long *ret)
 134 {
 135         int result, val;
 136
 137         result = read_method_int(handle, "GBMD", &val);
 138         *ret = val;
 139         return result;
 140 }
 141
 142 static int method_sbmc(acpi_handle handle, int cmd)
 143 {
 144         acpi_status status;
 145
 146         status = acpi_execute_simple_method(handle, "SBMC", cmd);
 147         return ACPI_FAILURE(status) ? -1 : 0;
 148 }
 149
 150 static int method_vpcr(acpi_handle handle, int cmd, int *ret)
 151 {
 152         acpi_status status;
 153         unsigned long long result;
 154         struct acpi_object_list params;
 155         union acpi_object in_obj;
 156
 157         params.count = 1;
 158         params.pointer = &in_obj;
 159         in_obj.type = ACPI_TYPE_INTEGER;
 160         in_obj.integer.value = cmd;
 161
 162         status = acpi_evaluate_integer(handle, "VPCR", &params, &result);
 163
 164         if (ACPI_FAILURE(status)) {
 165                 *ret = -1;
 166                 return -1;
 167         }
 168         *ret = result;
 169         return 0;
 170
 171 }
 172
 173 static int method_vpcw(acpi_handle handle, int cmd, int data)
 174 {
 175         struct acpi_object_list params;
 176         union acpi_object in_obj[2];
 177         acpi_status status;
 178
 179         params.count = 2;
 180         params.pointer = in_obj;
 181         in_obj[0].type = ACPI_TYPE_INTEGER;
 182         in_obj[0].integer.value = cmd;
 183         in_obj[1].type = ACPI_TYPE_INTEGER;
 184         in_obj[1].integer.value = data;
 185
 186         status = acpi_evaluate_object(handle, "VPCW", &params, NULL);
 187         if (status != AE_OK)
 188                 return -1;
 189         return 0;
 190 }
 191
 192 static int read_ec_data(acpi_handle handle, int cmd, unsigned long *data)
 193 {
 194         int val;
 195         unsigned long int end_jiffies;
 196
 197         if (method_vpcw(handle, 1, cmd))
 198                 return -1;
 199
 200         for (end_jiffies = jiffies+(HZ)*IDEAPAD_EC_TIMEOUT/1000+1;
 201              time_before(jiffies, end_jiffies);) {
 202                 schedule();
 203                 if (method_vpcr(handle, 1, &val))
 204                         return -1;
 205                 if (val == 0) {
 206                         if (method_vpcr(handle, 0, &val))
 207                                 return -1;
 208                         *data = val;
 209                         return 0;
 210                 }
 211         }
 212         pr_err("timeout in read_ec_cmd\n");
 213         return -1;
 214 }
 215
 216 static int write_ec_cmd(acpi_handle handle, int cmd, unsigned long data)
 217 {
 218         int val;
 219         unsigned long int end_jiffies;
 220
 221         if (method_vpcw(handle, 0, data))
 222                 return -1;
 223         if (method_vpcw(handle, 1, cmd))
 224                 return -1;
 225
 226         for (end_jiffies = jiffies+(HZ)*IDEAPAD_EC_TIMEOUT/1000+1;
 227              time_before(jiffies, end_jiffies);) {
 228                 schedule();
 229                 if (method_vpcr(handle, 1, &val))
 230                         return -1;
 231                 if (val == 0)
 232                         return 0;
 233         }
 234         pr_err("timeout in %s\n", __func__);
 235         return -1;
 236 }
 237
 238 /*
 239  * debugfs
 240  */
 241 static int debugfs_status_show(struct seq_file *s, void *data)
 242 {
 243         struct ideapad_private *priv = s->private;
 244         unsigned long value;
 245
 246         if (!priv)
 247                 return -EINVAL;
 248
 249         if (!read_ec_data(priv->adev->handle, VPCCMD_R_BL_MAX, &value))
 250                 seq_printf(s, "Backlight max:\t%lu\n", value);
 251         if (!read_ec_data(priv->adev->handle, VPCCMD_R_BL, &value))
 252                 seq_printf(s, "Backlight now:\t%lu\n", value);
 253         if (!read_ec_data(priv->adev->handle, VPCCMD_R_BL_POWER, &value))
 254                 seq_printf(s, "BL power value:\t%s\n", value ? "On" : "Off");
 255         seq_printf(s, "=====================\n");
 256
 257         if (!read_ec_data(priv->adev->handle, VPCCMD_R_RF, &value))
 258                 seq_printf(s, "Radio status:\t%s(%lu)\n",
 259                            value ? "On" : "Off", value);
 260         if (!read_ec_data(priv->adev->handle, VPCCMD_R_WIFI, &value))
 261                 seq_printf(s, "Wifi status:\t%s(%lu)\n",
 262                            value ? "On" : "Off", value);
 263         if (!read_ec_data(priv->adev->handle, VPCCMD_R_BT, &value))
 264                 seq_printf(s, "BT status:\t%s(%lu)\n",
 265                            value ? "On" : "Off", value);
 266         if (!read_ec_data(priv->adev->handle, VPCCMD_R_3G, &value))
 267                 seq_printf(s, "3G status:\t%s(%lu)\n",
 268                            value ? "On" : "Off", value);
 269         seq_printf(s, "=====================\n");
 270
 271         if (!read_ec_data(priv->adev->handle, VPCCMD_R_TOUCHPAD, &value))
 272                 seq_printf(s, "Touchpad status:%s(%lu)\n",
 273                            value ? "On" : "Off", value);
 274         if (!read_ec_data(priv->adev->handle, VPCCMD_R_CAMERA, &value))
 275                 seq_printf(s, "Camera status:\t%s(%lu)\n",
 276                            value ? "On" : "Off", value);
 277         seq_puts(s, "=====================\n");
 278
 279         if (!method_gbmd(priv->adev->handle, &value)) {
 280                 seq_printf(s, "Conservation mode:\t%s(%lu)\n",
 281                            test_bit(BM_CONSERVATION_BIT, &value) ? "On" : "Off",
 282                            value);
 283         }
 284
 285         return 0;
 286 }
 287 DEFINE_SHOW_ATTRIBUTE(debugfs_status);
 288
 289 static int debugfs_cfg_show(struct seq_file *s, void *data)
 290 {
 291         struct ideapad_private *priv = s->private;
 292
 293         if (!priv) {
 294                 seq_printf(s, "cfg: N/A\n");
 295         } else {
 296                 seq_printf(s, "cfg: 0x%.8lX\n\nCapability: ",
 297                            priv->cfg);
 298                 if (test_bit(CFG_BT_BIT, &priv->cfg))
 299                         seq_printf(s, "Bluetooth ");
 300                 if (test_bit(CFG_3G_BIT, &priv->cfg))
 301                         seq_printf(s, "3G ");
 302                 if (test_bit(CFG_WIFI_BIT, &priv->cfg))
 303                         seq_printf(s, "Wireless ");
 304                 if (test_bit(CFG_CAMERA_BIT, &priv->cfg))
 305                         seq_printf(s, "Camera ");
 306                 seq_printf(s, "\nGraphic: ");
 307                 switch ((priv->cfg)&0x700) {
 308                 case 0x100:
 309                         seq_printf(s, "Intel");
 310                         break;
 311                 case 0x200:
 312                         seq_printf(s, "ATI");
 313                         break;
 314                 case 0x300:
 315                         seq_printf(s, "Nvidia");
 316                         break;
 317                 case 0x400:
 318                         seq_printf(s, "Intel and ATI");
 319                         break;
 320                 case 0x500:
 321                         seq_printf(s, "Intel and Nvidia");
 322                         break;
 323                 }
 324                 seq_printf(s, "\n");
 325         }
 326         return 0;
 327 }
 328 DEFINE_SHOW_ATTRIBUTE(debugfs_cfg);
 329
 330 static int ideapad_debugfs_init(struct ideapad_private *priv)
 331 {
 332         struct dentry *node;
 333
 334         priv->debug = debugfs_create_dir("ideapad", NULL);
 335         if (priv->debug == NULL) {
 336                 pr_err("failed to create debugfs directory");
 337                 goto errout;
 338         }
 339
 340         node = debugfs_create_file("cfg", S_IRUGO, priv->debug, priv,
 341                                    &debugfs_cfg_fops);
 342         if (!node) {
 343                 pr_err("failed to create cfg in debugfs");
 344                 goto errout;
 345         }
 346
 347         node = debugfs_create_file("status", S_IRUGO, priv->debug, priv,
 348                                    &debugfs_status_fops);
 349         if (!node) {
 350                 pr_err("failed to create status in debugfs");
 351                 goto errout;
 352         }
 353
 354         return 0;
 355
 356 errout:
 357         return -ENOMEM;
 358 }
 359
 360 static void ideapad_debugfs_exit(struct ideapad_private *priv)
 361 {
 362         debugfs_remove_recursive(priv->debug);
 363         priv->debug = NULL;
 364 }
 365
 366 /*
 367  * sysfs
 368  */
 369 static ssize_t show_ideapad_cam(struct device *dev,
 370                                 struct device_attribute *attr,
 371                                 char *buf)
 372 {
 373         unsigned long result;
 374         struct ideapad_private *priv = dev_get_drvdata(dev);
 375
 376         if (read_ec_data(priv->adev->handle, VPCCMD_R_CAMERA, &result))
 377                 return sprintf(buf, "-1\n");
 378         return sprintf(buf, "%lu\n", result);
 379 }
 380
 381 static ssize_t store_ideapad_cam(struct device *dev,
 382                                  struct device_attribute *attr,
 383                                  const char *buf, size_t count)
 384 {
 385         int ret, state;
 386         struct ideapad_private *priv = dev_get_drvdata(dev);
 387
 388         if (!count)
 389                 return 0;
 390         if (sscanf(buf, "%i", &state) != 1)
 391                 return -EINVAL;
 392         ret = write_ec_cmd(priv->adev->handle, VPCCMD_W_CAMERA, state);
 393         if (ret < 0)
 394                 return -EIO;
 395         return count;
 396 }
 397
 398 static DEVICE_ATTR(camera_power, 0644, show_ideapad_cam, store_ideapad_cam);
 399
 400 static ssize_t show_ideapad_fan(struct device *dev,
 401                                 struct device_attribute *attr,
 402                                 char *buf)
 403 {
 404         unsigned long result;
 405         struct ideapad_private *priv = dev_get_drvdata(dev);
 406
 407         if (read_ec_data(priv->adev->handle, VPCCMD_R_FAN, &result))
 408                 return sprintf(buf, "-1\n");
 409         return sprintf(buf, "%lu\n", result);
 410 }
 411
 412 static ssize_t store_ideapad_fan(struct device *dev,
 413                                  struct device_attribute *attr,
 414                                  const char *buf, size_t count)
 415 {
 416         int ret, state;
 417         struct ideapad_private *priv = dev_get_drvdata(dev);
 418
 419         if (!count)
 420                 return 0;
 421         if (sscanf(buf, "%i", &state) != 1)
 422                 return -EINVAL;
 423         if (state < 0 || state > 4 || state == 3)
 424                 return -EINVAL;
 425         ret = write_ec_cmd(priv->adev->handle, VPCCMD_W_FAN, state);
 426         if (ret < 0)
 427                 return -EIO;
 428         return count;
 429 }
 430
 431 static DEVICE_ATTR(fan_mode, 0644, show_ideapad_fan, store_ideapad_fan);
 432
 433 static ssize_t touchpad_show(struct device *dev,
 434                              struct device_attribute *attr,
 435                              char *buf)
 436 {
 437         struct ideapad_private *priv = dev_get_drvdata(dev);
 438         unsigned long result;
 439
 440         if (read_ec_data(priv->adev->handle, VPCCMD_R_TOUCHPAD, &result))
 441                 return sprintf(buf, "-1\n");
 442         return sprintf(buf, "%lu\n", result);
 443 }
 444
 445 /* Switch to RO for now: It might be revisited in the future */
 446 static ssize_t __maybe_unused touchpad_store(struct device *dev,
 447                                              struct device_attribute *attr,
 448                                              const char *buf, size_t count)
 449 {
 450         struct ideapad_private *priv = dev_get_drvdata(dev);
 451         bool state;
 452         int ret;
 453
 454         ret = kstrtobool(buf, &state);
 455         if (ret)
 456                 return ret;
 457
 458         ret = write_ec_cmd(priv->adev->handle, VPCCMD_W_TOUCHPAD, state);
 459         if (ret < 0)
 460                 return -EIO;
 461         return count;
 462 }
 463
 464 static DEVICE_ATTR_RO(touchpad);
 465
 466 static ssize_t conservation_mode_show(struct device *dev,
 467                                 struct device_attribute *attr,
 468                                 char *buf)
 469 {
 470         struct ideapad_private *priv = dev_get_drvdata(dev);
 471         unsigned long result;
 472
 473         if (method_gbmd(priv->adev->handle, &result))
 474                 return sprintf(buf, "-1\n");
 475         return sprintf(buf, "%u\n", test_bit(BM_CONSERVATION_BIT, &result));
 476 }
 477
 478 static ssize_t conservation_mode_store(struct device *dev,
 479                                  struct device_attribute *attr,
 480                                  const char *buf, size_t count)
 481 {
 482         struct ideapad_private *priv = dev_get_drvdata(dev);
 483         bool state;
 484         int ret;
 485
 486         ret = kstrtobool(buf, &state);
 487         if (ret)
 488                 return ret;
 489
 490         ret = method_sbmc(priv->adev->handle, state ?
 491                                               BMCMD_CONSERVATION_ON :
 492                                               BMCMD_CONSERVATION_OFF);
 493         if (ret < 0)
 494                 return -EIO;
 495         return count;
 496 }
 497
 498 static DEVICE_ATTR_RW(conservation_mode);
 499
 500 static struct attribute *ideapad_attributes[] = {
 501         &dev_attr_camera_power.attr,
 502         &dev_attr_fan_mode.attr,
 503         &dev_attr_touchpad.attr,
 504         &dev_attr_conservation_mode.attr,
 505         NULL
 506 };
 507
 508 static umode_t ideapad_is_visible(struct kobject *kobj,
 509                                  struct attribute *attr,
 510                                  int idx)
 511 {
 512         struct device *dev = container_of(kobj, struct device, kobj);
 513         struct ideapad_private *priv = dev_get_drvdata(dev);
 514         bool supported;
 515
 516         if (attr == &dev_attr_camera_power.attr)
 517                 supported = test_bit(CFG_CAMERA_BIT, &(priv->cfg));
 518         else if (attr == &dev_attr_fan_mode.attr) {
 519                 unsigned long value;
 520                 supported = !read_ec_data(priv->adev->handle, VPCCMD_R_FAN,
 521                                           &value);
 522         } else if (attr == &dev_attr_conservation_mode.attr) {
 523                 supported = acpi_has_method(priv->adev->handle, "GBMD") &&
 524                             acpi_has_method(priv->adev->handle, "SBMC");
 525         } else
 526                 supported = true;
 527
 528         return supported ? attr->mode : 0;
 529 }
 530
 531 static const struct attribute_group ideapad_attribute_group = {
 532         .is_visible = ideapad_is_visible,
 533         .attrs = ideapad_attributes
 534 };
 535
 536 /*
 537  * Rfkill
 538  */
 539 struct ideapad_rfk_data {
 540         char *name;
 541         int cfgbit;
 542         int opcode;
 543         int type;
 544 };
 545
 546 static const struct ideapad_rfk_data ideapad_rfk_data[] = {
 547         { "ideapad_wlan",    CFG_WIFI_BIT, VPCCMD_W_WIFI, RFKILL_TYPE_WLAN },
 548         { "ideapad_bluetooth", CFG_BT_BIT, VPCCMD_W_BT, RFKILL_TYPE_BLUETOOTH },
 549         { "ideapad_3g",        CFG_3G_BIT, VPCCMD_W_3G, RFKILL_TYPE_WWAN },
 550 };
 551
 552 static int ideapad_rfk_set(void *data, bool blocked)
 553 {
 554         struct ideapad_rfk_priv *priv = data;
 555         int opcode = ideapad_rfk_data[priv->dev].opcode;
 556
 557         return write_ec_cmd(priv->priv->adev->handle, opcode, !blocked);
 558 }
 559
 560 static const struct rfkill_ops ideapad_rfk_ops = {
 561         .set_block = ideapad_rfk_set,
 562 };
 563
 564 static void ideapad_sync_rfk_state(struct ideapad_private *priv)
 565 {
 566         unsigned long hw_blocked = 0;
 567         int i;
 568
 569         if (priv->has_hw_rfkill_switch) {
 570                 if (read_ec_data(priv->adev->handle, VPCCMD_R_RF, &hw_blocked))
 571                         return;
 572                 hw_blocked = !hw_blocked;
 573         }
 574
 575         for (i = 0; i < IDEAPAD_RFKILL_DEV_NUM; i++)
 576                 if (priv->rfk[i])
 577                         rfkill_set_hw_state(priv->rfk[i], hw_blocked);
 578 }
 579
 580 static int ideapad_register_rfkill(struct ideapad_private *priv, int dev)
 581 {
 582         int ret;
 583         unsigned long sw_blocked;
 584
 585         if (no_bt_rfkill &&
 586             (ideapad_rfk_data[dev].type == RFKILL_TYPE_BLUETOOTH)) {
 587                 /* Force to enable bluetooth when no_bt_rfkill=1 */
 588                 write_ec_cmd(priv->adev->handle,
 589                              ideapad_rfk_data[dev].opcode, 1);
 590                 return 0;
 591         }
 592         priv->rfk_priv[dev].dev = dev;
 593         priv->rfk_priv[dev].priv = priv;
 594
 595         priv->rfk[dev] = rfkill_alloc(ideapad_rfk_data[dev].name,
 596                                       &priv->platform_device->dev,
 597                                       ideapad_rfk_data[dev].type,
 598                                       &ideapad_rfk_ops,
 599                                       &priv->rfk_priv[dev]);
 600         if (!priv->rfk[dev])
 601                 return -ENOMEM;
 602
 603         if (read_ec_data(priv->adev->handle, ideapad_rfk_data[dev].opcode-1,
 604                          &sw_blocked)) {
 605                 rfkill_init_sw_state(priv->rfk[dev], 0);
 606         } else {
 607                 sw_blocked = !sw_blocked;
 608                 rfkill_init_sw_state(priv->rfk[dev], sw_blocked);
 609         }
 610
 611         ret = rfkill_register(priv->rfk[dev]);
 612         if (ret) {
 613                 rfkill_destroy(priv->rfk[dev]);
 614                 return ret;
 615         }
 616         return 0;
 617 }
 618
 619 static void ideapad_unregister_rfkill(struct ideapad_private *priv, int dev)
 620 {
 621         if (!priv->rfk[dev])
 622                 return;
 623
 624         rfkill_unregister(priv->rfk[dev]);
 625         rfkill_destroy(priv->rfk[dev]);
 626 }
 627
 628 /*
 629  * Platform device
 630  */
 631 static int ideapad_sysfs_init(struct ideapad_private *priv)
 632 {
 633         return sysfs_create_group(&priv->platform_device->dev.kobj,
 634                                     &ideapad_attribute_group);
 635 }
 636
 637 static void ideapad_sysfs_exit(struct ideapad_private *priv)
 638 {
 639         sysfs_remove_group(&priv->platform_device->dev.kobj,
 640                            &ideapad_attribute_group);
 641 }
 642
 643 /*
 644  * input device
 645  */
 646 static const struct key_entry ideapad_keymap[] = {
 647         { KE_KEY, 6,  { KEY_SWITCHVIDEOMODE } },
 648         { KE_KEY, 7,  { KEY_CAMERA } },
 649         { KE_KEY, 8,  { KEY_MICMUTE } },
 650         { KE_KEY, 11, { KEY_F16 } },
 651         { KE_KEY, 13, { KEY_WLAN } },
 652         { KE_KEY, 16, { KEY_PROG1 } },
 653         { KE_KEY, 17, { KEY_PROG2 } },
 654         { KE_KEY, 64, { KEY_PROG3 } },
 655         { KE_KEY, 65, { KEY_PROG4 } },
 656         { KE_KEY, 66, { KEY_TOUCHPAD_OFF } },
 657         { KE_KEY, 67, { KEY_TOUCHPAD_ON } },
 658         { KE_KEY, 128, { KEY_ESC } },
 659
 660         { KE_END, 0 },
 661 };
 662
 663 static int ideapad_input_init(struct ideapad_private *priv)
 664 {
 665         struct input_dev *inputdev;
 666         int error;
 667
 668         inputdev = input_allocate_device();
 669         if (!inputdev)
 670                 return -ENOMEM;
 671
 672         inputdev->name = "Ideapad extra buttons";
 673         inputdev->phys = "ideapad/input0";
 674         inputdev->id.bustype = BUS_HOST;
 675         inputdev->dev.parent = &priv->platform_device->dev;
 676
 677         error = sparse_keymap_setup(inputdev, ideapad_keymap, NULL);
 678         if (error) {
 679                 pr_err("Unable to setup input device keymap\n");
 680                 goto err_free_dev;
 681         }
 682
 683         error = input_register_device(inputdev);
 684         if (error) {
 685                 pr_err("Unable to register input device\n");
 686                 goto err_free_dev;
 687         }
 688
 689         priv->inputdev = inputdev;
 690         return 0;
 691
 692 err_free_dev:
 693         input_free_device(inputdev);
 694         return error;
 695 }
 696
 697 static void ideapad_input_exit(struct ideapad_private *priv)
 698 {
 699         input_unregister_device(priv->inputdev);
 700         priv->inputdev = NULL;
 701 }
 702
 703 static void ideapad_input_report(struct ideapad_private *priv,
 704                                  unsigned long scancode)
 705 {
 706         sparse_keymap_report_event(priv->inputdev, scancode, 1, true);
 707 }
 708
 709 static void ideapad_input_novokey(struct ideapad_private *priv)
 710 {
 711         unsigned long long_pressed;
 712
 713         if (read_ec_data(priv->adev->handle, VPCCMD_R_NOVO, &long_pressed))
 714                 return;
 715         if (long_pressed)
 716                 ideapad_input_report(priv, 17);
 717         else
 718                 ideapad_input_report(priv, 16);
 719 }
 720
 721 static void ideapad_check_special_buttons(struct ideapad_private *priv)
 722 {
 723         unsigned long bit, value;
 724
 725         read_ec_data(priv->adev->handle, VPCCMD_R_SPECIAL_BUTTONS, &value);
 726
 727         for (bit = 0; bit < 16; bit++) {
 728                 if (test_bit(bit, &value)) {
 729                         switch (bit) {
 730                         case 0: /* Z580 */
 731                         case 6: /* Z570 */
 732                                 /* Thermal Management button */
 733                                 ideapad_input_report(priv, 65);
 734                                 break;
 735                         case 1:
 736                                 /* OneKey Theater button */
 737                                 ideapad_input_report(priv, 64);
 738                                 break;
 739                         default:
 740                                 pr_info("Unknown special button: %lu\n", bit);
 741                                 break;
 742                         }
 743                 }
 744         }
 745 }
 746
 747 /*
 748  * backlight
 749  */
 750 static int ideapad_backlight_get_brightness(struct backlight_device *blightdev)
 751 {
 752         struct ideapad_private *priv = bl_get_data(blightdev);
 753         unsigned long now;
 754
 755         if (!priv)
 756                 return -EINVAL;
 757
 758         if (read_ec_data(priv->adev->handle, VPCCMD_R_BL, &now))
 759                 return -EIO;
 760         return now;
 761 }
 762
 763 static int ideapad_backlight_update_status(struct backlight_device *blightdev)
 764 {
 765         struct ideapad_private *priv = bl_get_data(blightdev);
 766
 767         if (!priv)
 768                 return -EINVAL;
 769
 770         if (write_ec_cmd(priv->adev->handle, VPCCMD_W_BL,
 771                          blightdev->props.brightness))
 772                 return -EIO;
 773         if (write_ec_cmd(priv->adev->handle, VPCCMD_W_BL_POWER,
 774                          blightdev->props.power == FB_BLANK_POWERDOWN ? 0 : 1))
 775                 return -EIO;
 776
 777         return 0;
 778 }
 779
 780 static const struct backlight_ops ideapad_backlight_ops = {
 781         .get_brightness = ideapad_backlight_get_brightness,
 782         .update_status = ideapad_backlight_update_status,
 783 };
 784
 785 static int ideapad_backlight_init(struct ideapad_private *priv)
 786 {
 787         struct backlight_device *blightdev;
 788         struct backlight_properties props;
 789         unsigned long max, now, power;
 790
 791         if (read_ec_data(priv->adev->handle, VPCCMD_R_BL_MAX, &max))
 792                 return -EIO;
 793         if (read_ec_data(priv->adev->handle, VPCCMD_R_BL, &now))
 794                 return -EIO;
 795         if (read_ec_data(priv->adev->handle, VPCCMD_R_BL_POWER, &power))
 796                 return -EIO;
 797
 798         memset(&props, 0, sizeof(struct backlight_properties));
 799         props.max_brightness = max;
 800         props.type = BACKLIGHT_PLATFORM;
 801         blightdev = backlight_device_register("ideapad",
 802                                               &priv->platform_device->dev,
 803                                               priv,
 804                                               &ideapad_backlight_ops,
 805                                               &props);
 806         if (IS_ERR(blightdev)) {
 807                 pr_err("Could not register backlight device\n");
 808                 return PTR_ERR(blightdev);
 809         }
 810
 811         priv->blightdev = blightdev;
 812         blightdev->props.brightness = now;
 813         blightdev->props.power = power ? FB_BLANK_UNBLANK : FB_BLANK_POWERDOWN;
 814         backlight_update_status(blightdev);
 815
 816         return 0;
 817 }
 818
 819 static void ideapad_backlight_exit(struct ideapad_private *priv)
 820 {
 821         backlight_device_unregister(priv->blightdev);
 822         priv->blightdev = NULL;
 823 }
 824
 825 static void ideapad_backlight_notify_power(struct ideapad_private *priv)
 826 {
 827         unsigned long power;
 828         struct backlight_device *blightdev = priv->blightdev;
 829
 830         if (!blightdev)
 831                 return;
 832         if (read_ec_data(priv->adev->handle, VPCCMD_R_BL_POWER, &power))
 833                 return;
 834         blightdev->props.power = power ? FB_BLANK_UNBLANK : FB_BLANK_POWERDOWN;
 835 }
 836
 837 static void ideapad_backlight_notify_brightness(struct ideapad_private *priv)
 838 {
 839         unsigned long now;
 840
 841         /* if we control brightness via acpi video driver */
 842         if (priv->blightdev == NULL) {
 843                 read_ec_data(priv->adev->handle, VPCCMD_R_BL, &now);
 844                 return;
 845         }
 846
 847         backlight_force_update(priv->blightdev, BACKLIGHT_UPDATE_HOTKEY);
 848 }
 849
 850 /*
 851  * module init/exit
 852  */
 853 static void ideapad_sync_touchpad_state(struct ideapad_private *priv)
 854 {
 855         unsigned long value;
 856
 857         /* Without reading from EC touchpad LED doesn't switch state */
 858         if (!read_ec_data(priv->adev->handle, VPCCMD_R_TOUCHPAD, &value)) {
 859                 /* Some IdeaPads don't really turn off touchpad - they only
 860                  * switch the LED state. We (de)activate KBC AUX port to turn
 861                  * touchpad off and on. We send KEY_TOUCHPAD_OFF and
 862                  * KEY_TOUCHPAD_ON to not to get out of sync with LED */
 863                 unsigned char param;
 864                 i8042_command(&param, value ? I8042_CMD_AUX_ENABLE :
 865                               I8042_CMD_AUX_DISABLE);
 866                 ideapad_input_report(priv, value ? 67 : 66);
 867         }
 868 }
 869
 870 static void ideapad_acpi_notify(acpi_handle handle, u32 event, void *data)
 871 {
 872         struct ideapad_private *priv = data;
 873         unsigned long vpc1, vpc2, vpc_bit;
 874
 875         if (read_ec_data(handle, VPCCMD_R_VPC1, &vpc1))
 876                 return;
 877         if (read_ec_data(handle, VPCCMD_R_VPC2, &vpc2))
 878                 return;
 879
 880         vpc1 = (vpc2 << 8) | vpc1;
 881         for (vpc_bit = 0; vpc_bit < 16; vpc_bit++) {
 882                 if (test_bit(vpc_bit, &vpc1)) {
 883                         switch (vpc_bit) {
 884                         case 9:
 885                                 ideapad_sync_rfk_state(priv);
 886                                 break;
 887                         case 13:
 888                         case 11:
 889                         case 8:
 890                         case 7:
 891                         case 6:
 892                                 ideapad_input_report(priv, vpc_bit);
 893                                 break;
 894                         case 5:
 895                                 ideapad_sync_touchpad_state(priv);
 896                                 break;
 897                         case 4:
 898                                 ideapad_backlight_notify_brightness(priv);
 899                                 break;
 900                         case 3:
 901                                 ideapad_input_novokey(priv);
 902                                 break;
 903                         case 2:
 904                                 ideapad_backlight_notify_power(priv);
 905                                 break;
 906                         case 0:
 907                                 ideapad_check_special_buttons(priv);
 908                                 break;
 909                         case 1:
 910                                 /* Some IdeaPads report event 1 every ~20
 911                                  * seconds while on battery power; some
 912                                  * report this when changing to/from tablet
 913                                  * mode. Squelch this event.
 914                                  */
 915                                 break;
 916                         default:
 917                                 pr_info("Unknown event: %lu\n", vpc_bit);
 918                         }
 919                 }
 920         }
 921 }
 922
 923 #if IS_ENABLED(CONFIG_ACPI_WMI)
 924 static void ideapad_wmi_notify(u32 value, void *context)
 925 {
 926         switch (value) {
 927         case 128:
 928                 ideapad_input_report(context, value);
 929                 break;
 930         default:
 931                 pr_info("Unknown WMI event %u\n", value);
 932         }
 933 }
 934 #endif
 935
 936 /*
 937  * Some ideapads don't have a hardware rfkill switch, reading VPCCMD_R_RF
 938  * always results in 0 on these models, causing ideapad_laptop to wrongly
 939  * report all radios as hardware-blocked.
 940  */
 941 static const struct dmi_system_id no_hw_rfkill_list[] = {
 942         {
 943                 .ident = "Lenovo RESCUER R720-15IKBN",
 944                 .matches = {
 945                         DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 946                         DMI_MATCH(DMI_BOARD_NAME, "80WW"),
 947                 },
 948         },
 949         {
 950                 .ident = "Lenovo G40-30",
 951                 .matches = {
 952                         DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 953                         DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo G40-30"),
 954                 },
 955         },
 956         {
 957                 .ident = "Lenovo G50-30",
 958                 .matches = {
 959                         DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 960                         DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo G50-30"),
 961                 },
 962         },
 963         {
 964                 .ident = "Lenovo V310-14IKB",
 965                 .matches = {
 966                         DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 967                         DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo V310-14IKB"),
 968                 },
 969         },
 970         {
 971                 .ident = "Lenovo V310-14ISK",
 972                 .matches = {
 973                         DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 974                         DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo V310-14ISK"),
 975                 },
 976         },
 977         {
 978                 .ident = "Lenovo V310-15IKB",
 979                 .matches = {
 980                         DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 981                         DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo V310-15IKB"),
 982                 },
 983         },
 984         {
 985                 .ident = "Lenovo V310-15ISK",
 986                 .matches = {
 987                         DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 988                         DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo V310-15ISK"),
 989                 },
 990         },
 991         {
 992                 .ident = "Lenovo V510-15IKB",
 993                 .matches = {
 994                         DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 995                         DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo V510-15IKB"),
 996                 },
 997         },
 998         {
 999                 .ident = "Lenovo ideapad 300-15IBR",
1000                 .matches = {
1001                         DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1002                         DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo ideapad 300-15IBR"),
1003                 },
1004         },
1005         {
1006                 .ident = "Lenovo ideapad 300-15IKB",
1007                 .matches = {
1008                         DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1009                         DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo ideapad 300-15IKB"),
1010                 },
1011         },
1012         {
1013                 .ident = "Lenovo ideapad 300S-11IBR",
1014                 .matches = {
1015                         DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1016                         DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo ideapad 300S-11BR"),
1017                 },
1018         },
1019         {
1020                 .ident = "Lenovo ideapad 310-15ABR",
1021                 .matches = {
1022                         DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1023                         DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo ideapad 310-15ABR"),
1024                 },
1025         },
1026         {
1027                 .ident = "Lenovo ideapad 310-15IAP",
1028                 .matches = {
1029                         DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1030                         DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo ideapad 310-15IAP"),
1031                 },
1032         },
1033         {
1034                 .ident = "Lenovo ideapad 310-15IKB",
1035                 .matches = {
1036                         DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1037                         DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo ideapad 310-15IKB"),
1038                 },
1039         },
1040         {
1041                 .ident = "Lenovo ideapad 310-15ISK",
1042                 .matches = {
1043                         DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1044                         DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo ideapad 310-15ISK"),
1045                 },
1046         },
1047         {
1048                 .ident = "Lenovo ideapad Y700-14ISK",
1049                 .matches = {
1050                         DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1051                         DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo ideapad Y700-14ISK"),
1052                 },
1053         },
1054         {
1055                 .ident = "Lenovo ideapad Y700-15ACZ",
1056                 .matches = {
1057                         DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1058                         DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo ideapad Y700-15ACZ"),
1059                 },
1060         },
1061         {
1062                 .ident = "Lenovo ideapad Y700-15ISK",
1063                 .matches = {
1064                         DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1065                         DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo ideapad Y700-15ISK"),
1066                 },
1067         },
1068         {
1069                 .ident = "Lenovo ideapad Y700 Touch-15ISK",
1070                 .matches = {
1071                         DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1072                         DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo ideapad Y700 Touch-15ISK"),
1073                 },
1074         },
1075         {
1076                 .ident = "Lenovo ideapad Y700-17ISK",
1077                 .matches = {
1078                         DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1079                         DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo ideapad Y700-17ISK"),
1080                 },
1081         },
1082         {
1083                 .ident = "Lenovo Legion Y520-15IKBN",
1084                 .matches = {
1085                         DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1086                         DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo Y520-15IKBN"),
1087                 },
1088         },
1089         {
1090                 .ident = "Lenovo Legion Y720-15IKB",
1091                 .matches = {
1092                         DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1093                         DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo Y720-15IKB"),
1094                 },
1095         },
1096         {
1097                 .ident = "Lenovo Legion Y720-15IKBN",
1098                 .matches = {
1099                         DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1100                         DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo Y720-15IKBN"),
1101                 },
1102         },
1103         {
1104                 .ident = "Lenovo Yoga 2 11 / 13 / Pro",
1105                 .matches = {
1106                         DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1107                         DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo Yoga 2"),
1108                 },
1109         },
1110         {
1111                 .ident = "Lenovo Yoga 2 11 / 13 / Pro",
1112                 .matches = {
1113                         DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1114                         DMI_MATCH(DMI_BOARD_NAME, "Yoga2"),
1115                 },
1116         },
1117         {
1118                 .ident = "Lenovo Yoga 3 1170 / 1470",
1119                 .matches = {
1120                         DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1121                         DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo Yoga 3"),
1122                 },
1123         },
1124         {
1125                 .ident = "Lenovo Yoga 3 Pro 1370",
1126                 .matches = {
1127                         DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1128                         DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo YOGA 3"),
1129                 },
1130         },
1131         {
1132                 .ident = "Lenovo Yoga 700",
1133                 .matches = {
1134                         DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1135                         DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo YOGA 700"),
1136                 },
1137         },
1138         {
1139                 .ident = "Lenovo Yoga 900",
1140                 .matches = {
1141                         DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1142                         DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo YOGA 900"),
1143                 },
1144         },
1145         {
1146                 .ident = "Lenovo Yoga 900",
1147                 .matches = {
1148                         DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1149                         DMI_MATCH(DMI_BOARD_NAME, "VIUU4"),
1150                 },
1151         },
1152         {
1153                 .ident = "Lenovo YOGA 910-13IKB",
1154                 .matches = {
1155                         DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1156                         DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo YOGA 910-13IKB"),
1157                 },
1158         },
1159         {
1160                 .ident = "Lenovo YOGA 920-13IKB",
1161                 .matches = {
1162                         DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1163                         DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo YOGA 920-13IKB"),
1164                 },
1165         },
1166         {}
1167 };
1168
1169 static int ideapad_acpi_add(struct platform_device *pdev)
1170 {
1171         int ret, i;
1172         int cfg;
1173         struct ideapad_private *priv;
1174         struct acpi_device *adev;
1175
1176         ret = acpi_bus_get_device(ACPI_HANDLE(&pdev->dev), &adev);
1177         if (ret)
1178                 return -ENODEV;
1179
1180         if (read_method_int(adev->handle, "_CFG", &cfg))
1181                 return -ENODEV;
1182
1183         priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
1184         if (!priv)
1185                 return -ENOMEM;
1186
1187         dev_set_drvdata(&pdev->dev, priv);
1188         priv->cfg = cfg;
1189         priv->adev = adev;
1190         priv->platform_device = pdev;
1191         priv->has_hw_rfkill_switch = !dmi_check_system(no_hw_rfkill_list);
1192
1193         ret = ideapad_sysfs_init(priv);
1194         if (ret)
1195                 return ret;
1196
1197         ret = ideapad_debugfs_init(priv);
1198         if (ret)
1199                 goto debugfs_failed;
1200
1201         ret = ideapad_input_init(priv);
1202         if (ret)
1203                 goto input_failed;
1204
1205         /*
1206          * On some models without a hw-switch (the yoga 2 13 at least)
1207          * VPCCMD_W_RF must be explicitly set to 1 for the wifi to work.
1208          */
1209         if (!priv->has_hw_rfkill_switch)
1210                 write_ec_cmd(priv->adev->handle, VPCCMD_W_RF, 1);
1211
1212         for (i = 0; i < IDEAPAD_RFKILL_DEV_NUM; i++)
1213                 if (test_bit(ideapad_rfk_data[i].cfgbit, &priv->cfg))
1214                         ideapad_register_rfkill(priv, i);
1215
1216         ideapad_sync_rfk_state(priv);
1217         ideapad_sync_touchpad_state(priv);
1218
1219         if (acpi_video_get_backlight_type() == acpi_backlight_vendor) {
1220                 ret = ideapad_backlight_init(priv);
1221                 if (ret && ret != -ENODEV)
1222                         goto backlight_failed;
1223         }
1224         ret = acpi_install_notify_handler(adev->handle,
1225                 ACPI_DEVICE_NOTIFY, ideapad_acpi_notify, priv);
1226         if (ret)
1227                 goto notification_failed;
1228
1229 #if IS_ENABLED(CONFIG_ACPI_WMI)
1230         for (i = 0; i < ARRAY_SIZE(ideapad_wmi_fnesc_events); i++) {
1231                 ret = wmi_install_notify_handler(ideapad_wmi_fnesc_events[i],
1232                                                  ideapad_wmi_notify, priv);
1233                 if (ret == AE_OK) {
1234                         priv->fnesc_guid = ideapad_wmi_fnesc_events[i];
1235                         break;
1236                 }
1237         }
1238         if (ret != AE_OK && ret != AE_NOT_EXIST)
1239                 goto notification_failed_wmi;
1240 #endif
1241
1242         return 0;
1243 #if IS_ENABLED(CONFIG_ACPI_WMI)
1244 notification_failed_wmi:
1245         acpi_remove_notify_handler(priv->adev->handle,
1246                 ACPI_DEVICE_NOTIFY, ideapad_acpi_notify);
1247 #endif
1248 notification_failed:
1249         ideapad_backlight_exit(priv);
1250 backlight_failed:
1251         for (i = 0; i < IDEAPAD_RFKILL_DEV_NUM; i++)
1252                 ideapad_unregister_rfkill(priv, i);
1253         ideapad_input_exit(priv);
1254 input_failed:
1255         ideapad_debugfs_exit(priv);
1256 debugfs_failed:
1257         ideapad_sysfs_exit(priv);
1258         return ret;
1259 }
1260
1261 static int ideapad_acpi_remove(struct platform_device *pdev)
1262 {
1263         struct ideapad_private *priv = dev_get_drvdata(&pdev->dev);
1264         int i;
1265
1266 #if IS_ENABLED(CONFIG_ACPI_WMI)
1267         if (priv->fnesc_guid)
1268                 wmi_remove_notify_handler(priv->fnesc_guid);
1269 #endif
1270         acpi_remove_notify_handler(priv->adev->handle,
1271                 ACPI_DEVICE_NOTIFY, ideapad_acpi_notify);
1272         ideapad_backlight_exit(priv);
1273         for (i = 0; i < IDEAPAD_RFKILL_DEV_NUM; i++)
1274                 ideapad_unregister_rfkill(priv, i);
1275         ideapad_input_exit(priv);
1276         ideapad_debugfs_exit(priv);
1277         ideapad_sysfs_exit(priv);
1278         dev_set_drvdata(&pdev->dev, NULL);
1279
1280         return 0;
1281 }
1282
1283 #ifdef CONFIG_PM_SLEEP
1284 static int ideapad_acpi_resume(struct device *device)
1285 {
1286         struct ideapad_private *priv;
1287
1288         if (!device)
1289                 return -EINVAL;
1290         priv = dev_get_drvdata(device);
1291
1292         ideapad_sync_rfk_state(priv);
1293         ideapad_sync_touchpad_state(priv);
1294         return 0;
1295 }
1296 #endif
1297 static SIMPLE_DEV_PM_OPS(ideapad_pm, NULL, ideapad_acpi_resume);
1298
1299 static const struct acpi_device_id ideapad_device_ids[] = {
1300         { "VPC2004", 0},
1301         { "", 0},
1302 };
1303 MODULE_DEVICE_TABLE(acpi, ideapad_device_ids);
1304
1305 static struct platform_driver ideapad_acpi_driver = {
1306         .probe = ideapad_acpi_add,
1307         .remove = ideapad_acpi_remove,
1308         .driver = {
1309                 .name   = "ideapad_acpi",
1310                 .pm     = &ideapad_pm,
1311                 .acpi_match_table = ACPI_PTR(ideapad_device_ids),
1312         },
1313 };
1314
1315 module_platform_driver(ideapad_acpi_driver);
1316
1317 MODULE_AUTHOR("David Woodhouse <dwmw2@infradead.org>");
1318 MODULE_DESCRIPTION("IdeaPad ACPI Extras");
1319 MODULE_LICENSE("GPL");