1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * ideapad-laptop.c - Lenovo IdeaPad ACPI Extras 4 * 5 * Copyright © 2010 Intel Corporation 6 * Copyright © 2010 David Woodhouse <dwmw2@infradead.org> 7 */ 8 9 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 10 11 #include <linux/acpi.h> 12 #include <linux/backlight.h> 13 #include <linux/bitops.h> 14 #include <linux/bug.h> 15 #include <linux/debugfs.h> 16 #include <linux/device.h> 17 #include <linux/dmi.h> 18 #include <linux/fb.h> 19 #include <linux/i8042.h> 20 #include <linux/init.h> 21 #include <linux/input.h> 22 #include <linux/input/sparse-keymap.h> 23 #include <linux/jiffies.h> 24 #include <linux/kernel.h> 25 #include <linux/leds.h> 26 #include <linux/module.h> 27 #include <linux/platform_device.h> 28 #include <linux/platform_profile.h> 29 #include <linux/rfkill.h> 30 #include <linux/seq_file.h> 31 #include <linux/sysfs.h> 32 #include <linux/types.h> 33 #include <linux/wmi.h> 34 35 #include <acpi/video.h> 36 37 #include <dt-bindings/leds/common.h> 38 39 #define IDEAPAD_RFKILL_DEV_NUM 3 40 41 enum { 42 CFG_CAP_BT_BIT = 16, 43 CFG_CAP_3G_BIT = 17, 44 CFG_CAP_WIFI_BIT = 18, 45 CFG_CAP_CAM_BIT = 19, 46 47 /* 48 * These are OnScreenDisplay support bits that can be useful to determine 49 * whether a hotkey exists/should show OSD. But they aren't particularly 50 * meaningful since they were introduced later, i.e. 2010 IdeaPads 51 * don't have these, but they still have had OSD for hotkeys. 52 */ 53 CFG_OSD_NUMLK_BIT = 27, 54 CFG_OSD_CAPSLK_BIT = 28, 55 CFG_OSD_MICMUTE_BIT = 29, 56 CFG_OSD_TOUCHPAD_BIT = 30, 57 CFG_OSD_CAM_BIT = 31, 58 }; 59 60 enum { 61 GBMD_CONSERVATION_STATE_BIT = 5, 62 }; 63 64 enum { 65 SBMC_CONSERVATION_ON = 3, 66 SBMC_CONSERVATION_OFF = 5, 67 }; 68 69 enum { 70 HALS_KBD_BL_SUPPORT_BIT = 4, 71 HALS_KBD_BL_STATE_BIT = 5, 72 HALS_USB_CHARGING_SUPPORT_BIT = 6, 73 HALS_USB_CHARGING_STATE_BIT = 7, 74 HALS_FNLOCK_SUPPORT_BIT = 9, 75 HALS_FNLOCK_STATE_BIT = 10, 76 HALS_HOTKEYS_PRIMARY_BIT = 11, 77 }; 78 79 enum { 80 SALS_KBD_BL_ON = 0x8, 81 SALS_KBD_BL_OFF = 0x9, 82 SALS_USB_CHARGING_ON = 0xa, 83 SALS_USB_CHARGING_OFF = 0xb, 84 SALS_FNLOCK_ON = 0xe, 85 SALS_FNLOCK_OFF = 0xf, 86 }; 87 88 enum { 89 VPCCMD_R_VPC1 = 0x10, 90 VPCCMD_R_BL_MAX, 91 VPCCMD_R_BL, 92 VPCCMD_W_BL, 93 VPCCMD_R_WIFI, 94 VPCCMD_W_WIFI, 95 VPCCMD_R_BT, 96 VPCCMD_W_BT, 97 VPCCMD_R_BL_POWER, 98 VPCCMD_R_NOVO, 99 VPCCMD_R_VPC2, 100 VPCCMD_R_TOUCHPAD, 101 VPCCMD_W_TOUCHPAD, 102 VPCCMD_R_CAMERA, 103 VPCCMD_W_CAMERA, 104 VPCCMD_R_3G, 105 VPCCMD_W_3G, 106 VPCCMD_R_ODD, /* 0x21 */ 107 VPCCMD_W_FAN, 108 VPCCMD_R_RF, 109 VPCCMD_W_RF, 110 VPCCMD_R_FAN = 0x2B, 111 VPCCMD_R_SPECIAL_BUTTONS = 0x31, 112 VPCCMD_W_BL_POWER = 0x33, 113 }; 114 115 struct ideapad_dytc_priv { 116 enum platform_profile_option current_profile; 117 struct platform_profile_handler pprof; 118 struct mutex mutex; /* protects the DYTC interface */ 119 struct ideapad_private *priv; 120 }; 121 122 struct ideapad_rfk_priv { 123 int dev; 124 struct ideapad_private *priv; 125 }; 126 127 struct ideapad_private { 128 struct acpi_device *adev; 129 struct rfkill *rfk[IDEAPAD_RFKILL_DEV_NUM]; 130 struct ideapad_rfk_priv rfk_priv[IDEAPAD_RFKILL_DEV_NUM]; 131 struct platform_device *platform_device; 132 struct input_dev *inputdev; 133 struct backlight_device *blightdev; 134 struct ideapad_dytc_priv *dytc; 135 struct dentry *debug; 136 unsigned long cfg; 137 unsigned long r_touchpad_val; 138 struct { 139 bool conservation_mode : 1; 140 bool dytc : 1; 141 bool fan_mode : 1; 142 bool fn_lock : 1; 143 bool set_fn_lock_led : 1; 144 bool hw_rfkill_switch : 1; 145 bool kbd_bl : 1; 146 bool touchpad_ctrl_via_ec : 1; 147 bool ctrl_ps2_aux_port : 1; 148 bool usb_charging : 1; 149 } features; 150 struct { 151 bool initialized; 152 struct led_classdev led; 153 unsigned int last_brightness; 154 } kbd_bl; 155 }; 156 157 static bool no_bt_rfkill; 158 module_param(no_bt_rfkill, bool, 0444); 159 MODULE_PARM_DESC(no_bt_rfkill, "No rfkill for bluetooth."); 160 161 static bool allow_v4_dytc; 162 module_param(allow_v4_dytc, bool, 0444); 163 MODULE_PARM_DESC(allow_v4_dytc, 164 "Enable DYTC version 4 platform-profile support. " 165 "If you need this please report this to: platform-driver-x86@vger.kernel.org"); 166 167 static bool hw_rfkill_switch; 168 module_param(hw_rfkill_switch, bool, 0444); 169 MODULE_PARM_DESC(hw_rfkill_switch, 170 "Enable rfkill support for laptops with a hw on/off wifi switch/slider. " 171 "If you need this please report this to: platform-driver-x86@vger.kernel.org"); 172 173 static bool set_fn_lock_led; 174 module_param(set_fn_lock_led, bool, 0444); 175 MODULE_PARM_DESC(set_fn_lock_led, 176 "Enable driver based updates of the fn-lock LED on fn-lock changes. " 177 "If you need this please report this to: platform-driver-x86@vger.kernel.org"); 178 179 static bool ctrl_ps2_aux_port; 180 module_param(ctrl_ps2_aux_port, bool, 0444); 181 MODULE_PARM_DESC(ctrl_ps2_aux_port, 182 "Enable driver based PS/2 aux port en-/dis-abling on touchpad on/off toggle. " 183 "If you need this please report this to: platform-driver-x86@vger.kernel.org"); 184 185 static bool touchpad_ctrl_via_ec; 186 module_param(touchpad_ctrl_via_ec, bool, 0444); 187 MODULE_PARM_DESC(touchpad_ctrl_via_ec, 188 "Enable registering a 'touchpad' sysfs-attribute which can be used to manually " 189 "tell the EC to enable/disable the touchpad. This may not work on all models."); 190 191 /* 192 * shared data 193 */ 194 195 static struct ideapad_private *ideapad_shared; 196 static DEFINE_MUTEX(ideapad_shared_mutex); 197 198 static int ideapad_shared_init(struct ideapad_private *priv) 199 { 200 int ret; 201 202 mutex_lock(&ideapad_shared_mutex); 203 204 if (!ideapad_shared) { 205 ideapad_shared = priv; 206 ret = 0; 207 } else { 208 dev_warn(&priv->adev->dev, "found multiple platform devices\n"); 209 ret = -EINVAL; 210 } 211 212 mutex_unlock(&ideapad_shared_mutex); 213 214 return ret; 215 } 216 217 static void ideapad_shared_exit(struct ideapad_private *priv) 218 { 219 mutex_lock(&ideapad_shared_mutex); 220 221 if (ideapad_shared == priv) 222 ideapad_shared = NULL; 223 224 mutex_unlock(&ideapad_shared_mutex); 225 } 226 227 /* 228 * ACPI Helpers 229 */ 230 #define IDEAPAD_EC_TIMEOUT 200 /* in ms */ 231 232 static int eval_int(acpi_handle handle, const char *name, unsigned long *res) 233 { 234 unsigned long long result; 235 acpi_status status; 236 237 status = acpi_evaluate_integer(handle, (char *)name, NULL, &result); 238 if (ACPI_FAILURE(status)) 239 return -EIO; 240 241 *res = result; 242 243 return 0; 244 } 245 246 static int exec_simple_method(acpi_handle handle, const char *name, unsigned long arg) 247 { 248 acpi_status status = acpi_execute_simple_method(handle, (char *)name, arg); 249 250 return ACPI_FAILURE(status) ? -EIO : 0; 251 } 252 253 static int eval_gbmd(acpi_handle handle, unsigned long *res) 254 { 255 return eval_int(handle, "GBMD", res); 256 } 257 258 static int exec_sbmc(acpi_handle handle, unsigned long arg) 259 { 260 return exec_simple_method(handle, "SBMC", arg); 261 } 262 263 static int eval_hals(acpi_handle handle, unsigned long *res) 264 { 265 return eval_int(handle, "HALS", res); 266 } 267 268 static int exec_sals(acpi_handle handle, unsigned long arg) 269 { 270 return exec_simple_method(handle, "SALS", arg); 271 } 272 273 static int eval_int_with_arg(acpi_handle handle, const char *name, unsigned long arg, unsigned long *res) 274 { 275 struct acpi_object_list params; 276 unsigned long long result; 277 union acpi_object in_obj; 278 acpi_status status; 279 280 params.count = 1; 281 params.pointer = &in_obj; 282 in_obj.type = ACPI_TYPE_INTEGER; 283 in_obj.integer.value = arg; 284 285 status = acpi_evaluate_integer(handle, (char *)name, ¶ms, &result); 286 if (ACPI_FAILURE(status)) 287 return -EIO; 288 289 if (res) 290 *res = result; 291 292 return 0; 293 } 294 295 static int eval_dytc(acpi_handle handle, unsigned long cmd, unsigned long *res) 296 { 297 return eval_int_with_arg(handle, "DYTC", cmd, res); 298 } 299 300 static int eval_vpcr(acpi_handle handle, unsigned long cmd, unsigned long *res) 301 { 302 return eval_int_with_arg(handle, "VPCR", cmd, res); 303 } 304 305 static int eval_vpcw(acpi_handle handle, unsigned long cmd, unsigned long data) 306 { 307 struct acpi_object_list params; 308 union acpi_object in_obj[2]; 309 acpi_status status; 310 311 params.count = 2; 312 params.pointer = in_obj; 313 in_obj[0].type = ACPI_TYPE_INTEGER; 314 in_obj[0].integer.value = cmd; 315 in_obj[1].type = ACPI_TYPE_INTEGER; 316 in_obj[1].integer.value = data; 317 318 status = acpi_evaluate_object(handle, "VPCW", ¶ms, NULL); 319 if (ACPI_FAILURE(status)) 320 return -EIO; 321 322 return 0; 323 } 324 325 static int read_ec_data(acpi_handle handle, unsigned long cmd, unsigned long *data) 326 { 327 unsigned long end_jiffies, val; 328 int err; 329 330 err = eval_vpcw(handle, 1, cmd); 331 if (err) 332 return err; 333 334 end_jiffies = jiffies + msecs_to_jiffies(IDEAPAD_EC_TIMEOUT) + 1; 335 336 while (time_before(jiffies, end_jiffies)) { 337 schedule(); 338 339 err = eval_vpcr(handle, 1, &val); 340 if (err) 341 return err; 342 343 if (val == 0) 344 return eval_vpcr(handle, 0, data); 345 } 346 347 acpi_handle_err(handle, "timeout in %s\n", __func__); 348 349 return -ETIMEDOUT; 350 } 351 352 static int write_ec_cmd(acpi_handle handle, unsigned long cmd, unsigned long data) 353 { 354 unsigned long end_jiffies, val; 355 int err; 356 357 err = eval_vpcw(handle, 0, data); 358 if (err) 359 return err; 360 361 err = eval_vpcw(handle, 1, cmd); 362 if (err) 363 return err; 364 365 end_jiffies = jiffies + msecs_to_jiffies(IDEAPAD_EC_TIMEOUT) + 1; 366 367 while (time_before(jiffies, end_jiffies)) { 368 schedule(); 369 370 err = eval_vpcr(handle, 1, &val); 371 if (err) 372 return err; 373 374 if (val == 0) 375 return 0; 376 } 377 378 acpi_handle_err(handle, "timeout in %s\n", __func__); 379 380 return -ETIMEDOUT; 381 } 382 383 /* 384 * debugfs 385 */ 386 static int debugfs_status_show(struct seq_file *s, void *data) 387 { 388 struct ideapad_private *priv = s->private; 389 unsigned long value; 390 391 if (!read_ec_data(priv->adev->handle, VPCCMD_R_BL_MAX, &value)) 392 seq_printf(s, "Backlight max: %lu\n", value); 393 if (!read_ec_data(priv->adev->handle, VPCCMD_R_BL, &value)) 394 seq_printf(s, "Backlight now: %lu\n", value); 395 if (!read_ec_data(priv->adev->handle, VPCCMD_R_BL_POWER, &value)) 396 seq_printf(s, "BL power value: %s (%lu)\n", value ? "on" : "off", value); 397 398 seq_puts(s, "=====================\n"); 399 400 if (!read_ec_data(priv->adev->handle, VPCCMD_R_RF, &value)) 401 seq_printf(s, "Radio status: %s (%lu)\n", value ? "on" : "off", value); 402 if (!read_ec_data(priv->adev->handle, VPCCMD_R_WIFI, &value)) 403 seq_printf(s, "Wifi status: %s (%lu)\n", value ? "on" : "off", value); 404 if (!read_ec_data(priv->adev->handle, VPCCMD_R_BT, &value)) 405 seq_printf(s, "BT status: %s (%lu)\n", value ? "on" : "off", value); 406 if (!read_ec_data(priv->adev->handle, VPCCMD_R_3G, &value)) 407 seq_printf(s, "3G status: %s (%lu)\n", value ? "on" : "off", value); 408 409 seq_puts(s, "=====================\n"); 410 411 if (!read_ec_data(priv->adev->handle, VPCCMD_R_TOUCHPAD, &value)) 412 seq_printf(s, "Touchpad status: %s (%lu)\n", value ? "on" : "off", value); 413 if (!read_ec_data(priv->adev->handle, VPCCMD_R_CAMERA, &value)) 414 seq_printf(s, "Camera status: %s (%lu)\n", value ? "on" : "off", value); 415 416 seq_puts(s, "=====================\n"); 417 418 if (!eval_gbmd(priv->adev->handle, &value)) 419 seq_printf(s, "GBMD: %#010lx\n", value); 420 if (!eval_hals(priv->adev->handle, &value)) 421 seq_printf(s, "HALS: %#010lx\n", value); 422 423 return 0; 424 } 425 DEFINE_SHOW_ATTRIBUTE(debugfs_status); 426 427 static int debugfs_cfg_show(struct seq_file *s, void *data) 428 { 429 struct ideapad_private *priv = s->private; 430 431 seq_printf(s, "_CFG: %#010lx\n\n", priv->cfg); 432 433 seq_puts(s, "Capabilities:"); 434 if (test_bit(CFG_CAP_BT_BIT, &priv->cfg)) 435 seq_puts(s, " bluetooth"); 436 if (test_bit(CFG_CAP_3G_BIT, &priv->cfg)) 437 seq_puts(s, " 3G"); 438 if (test_bit(CFG_CAP_WIFI_BIT, &priv->cfg)) 439 seq_puts(s, " wifi"); 440 if (test_bit(CFG_CAP_CAM_BIT, &priv->cfg)) 441 seq_puts(s, " camera"); 442 seq_puts(s, "\n"); 443 444 seq_puts(s, "OSD support:"); 445 if (test_bit(CFG_OSD_NUMLK_BIT, &priv->cfg)) 446 seq_puts(s, " num-lock"); 447 if (test_bit(CFG_OSD_CAPSLK_BIT, &priv->cfg)) 448 seq_puts(s, " caps-lock"); 449 if (test_bit(CFG_OSD_MICMUTE_BIT, &priv->cfg)) 450 seq_puts(s, " mic-mute"); 451 if (test_bit(CFG_OSD_TOUCHPAD_BIT, &priv->cfg)) 452 seq_puts(s, " touchpad"); 453 if (test_bit(CFG_OSD_CAM_BIT, &priv->cfg)) 454 seq_puts(s, " camera"); 455 seq_puts(s, "\n"); 456 457 seq_puts(s, "Graphics: "); 458 switch (priv->cfg & 0x700) { 459 case 0x100: 460 seq_puts(s, "Intel"); 461 break; 462 case 0x200: 463 seq_puts(s, "ATI"); 464 break; 465 case 0x300: 466 seq_puts(s, "Nvidia"); 467 break; 468 case 0x400: 469 seq_puts(s, "Intel and ATI"); 470 break; 471 case 0x500: 472 seq_puts(s, "Intel and Nvidia"); 473 break; 474 } 475 seq_puts(s, "\n"); 476 477 return 0; 478 } 479 DEFINE_SHOW_ATTRIBUTE(debugfs_cfg); 480 481 static void ideapad_debugfs_init(struct ideapad_private *priv) 482 { 483 struct dentry *dir; 484 485 dir = debugfs_create_dir("ideapad", NULL); 486 priv->debug = dir; 487 488 debugfs_create_file("cfg", 0444, dir, priv, &debugfs_cfg_fops); 489 debugfs_create_file("status", 0444, dir, priv, &debugfs_status_fops); 490 } 491 492 static void ideapad_debugfs_exit(struct ideapad_private *priv) 493 { 494 debugfs_remove_recursive(priv->debug); 495 priv->debug = NULL; 496 } 497 498 /* 499 * sysfs 500 */ 501 static ssize_t camera_power_show(struct device *dev, 502 struct device_attribute *attr, 503 char *buf) 504 { 505 struct ideapad_private *priv = dev_get_drvdata(dev); 506 unsigned long result; 507 int err; 508 509 err = read_ec_data(priv->adev->handle, VPCCMD_R_CAMERA, &result); 510 if (err) 511 return err; 512 513 return sysfs_emit(buf, "%d\n", !!result); 514 } 515 516 static ssize_t camera_power_store(struct device *dev, 517 struct device_attribute *attr, 518 const char *buf, size_t count) 519 { 520 struct ideapad_private *priv = dev_get_drvdata(dev); 521 bool state; 522 int err; 523 524 err = kstrtobool(buf, &state); 525 if (err) 526 return err; 527 528 err = write_ec_cmd(priv->adev->handle, VPCCMD_W_CAMERA, state); 529 if (err) 530 return err; 531 532 return count; 533 } 534 535 static DEVICE_ATTR_RW(camera_power); 536 537 static ssize_t conservation_mode_show(struct device *dev, 538 struct device_attribute *attr, 539 char *buf) 540 { 541 struct ideapad_private *priv = dev_get_drvdata(dev); 542 unsigned long result; 543 int err; 544 545 err = eval_gbmd(priv->adev->handle, &result); 546 if (err) 547 return err; 548 549 return sysfs_emit(buf, "%d\n", !!test_bit(GBMD_CONSERVATION_STATE_BIT, &result)); 550 } 551 552 static ssize_t conservation_mode_store(struct device *dev, 553 struct device_attribute *attr, 554 const char *buf, size_t count) 555 { 556 struct ideapad_private *priv = dev_get_drvdata(dev); 557 bool state; 558 int err; 559 560 err = kstrtobool(buf, &state); 561 if (err) 562 return err; 563 564 err = exec_sbmc(priv->adev->handle, state ? SBMC_CONSERVATION_ON : SBMC_CONSERVATION_OFF); 565 if (err) 566 return err; 567 568 return count; 569 } 570 571 static DEVICE_ATTR_RW(conservation_mode); 572 573 static ssize_t fan_mode_show(struct device *dev, 574 struct device_attribute *attr, 575 char *buf) 576 { 577 struct ideapad_private *priv = dev_get_drvdata(dev); 578 unsigned long result; 579 int err; 580 581 err = read_ec_data(priv->adev->handle, VPCCMD_R_FAN, &result); 582 if (err) 583 return err; 584 585 return sysfs_emit(buf, "%lu\n", result); 586 } 587 588 static ssize_t fan_mode_store(struct device *dev, 589 struct device_attribute *attr, 590 const char *buf, size_t count) 591 { 592 struct ideapad_private *priv = dev_get_drvdata(dev); 593 unsigned int state; 594 int err; 595 596 err = kstrtouint(buf, 0, &state); 597 if (err) 598 return err; 599 600 if (state > 4 || state == 3) 601 return -EINVAL; 602 603 err = write_ec_cmd(priv->adev->handle, VPCCMD_W_FAN, state); 604 if (err) 605 return err; 606 607 return count; 608 } 609 610 static DEVICE_ATTR_RW(fan_mode); 611 612 static ssize_t fn_lock_show(struct device *dev, 613 struct device_attribute *attr, 614 char *buf) 615 { 616 struct ideapad_private *priv = dev_get_drvdata(dev); 617 unsigned long hals; 618 int err; 619 620 err = eval_hals(priv->adev->handle, &hals); 621 if (err) 622 return err; 623 624 return sysfs_emit(buf, "%d\n", !!test_bit(HALS_FNLOCK_STATE_BIT, &hals)); 625 } 626 627 static ssize_t fn_lock_store(struct device *dev, 628 struct device_attribute *attr, 629 const char *buf, size_t count) 630 { 631 struct ideapad_private *priv = dev_get_drvdata(dev); 632 bool state; 633 int err; 634 635 err = kstrtobool(buf, &state); 636 if (err) 637 return err; 638 639 err = exec_sals(priv->adev->handle, state ? SALS_FNLOCK_ON : SALS_FNLOCK_OFF); 640 if (err) 641 return err; 642 643 return count; 644 } 645 646 static DEVICE_ATTR_RW(fn_lock); 647 648 static ssize_t touchpad_show(struct device *dev, 649 struct device_attribute *attr, 650 char *buf) 651 { 652 struct ideapad_private *priv = dev_get_drvdata(dev); 653 unsigned long result; 654 int err; 655 656 err = read_ec_data(priv->adev->handle, VPCCMD_R_TOUCHPAD, &result); 657 if (err) 658 return err; 659 660 priv->r_touchpad_val = result; 661 662 return sysfs_emit(buf, "%d\n", !!result); 663 } 664 665 static ssize_t touchpad_store(struct device *dev, 666 struct device_attribute *attr, 667 const char *buf, size_t count) 668 { 669 struct ideapad_private *priv = dev_get_drvdata(dev); 670 bool state; 671 int err; 672 673 err = kstrtobool(buf, &state); 674 if (err) 675 return err; 676 677 err = write_ec_cmd(priv->adev->handle, VPCCMD_W_TOUCHPAD, state); 678 if (err) 679 return err; 680 681 priv->r_touchpad_val = state; 682 683 return count; 684 } 685 686 static DEVICE_ATTR_RW(touchpad); 687 688 static ssize_t usb_charging_show(struct device *dev, 689 struct device_attribute *attr, 690 char *buf) 691 { 692 struct ideapad_private *priv = dev_get_drvdata(dev); 693 unsigned long hals; 694 int err; 695 696 err = eval_hals(priv->adev->handle, &hals); 697 if (err) 698 return err; 699 700 return sysfs_emit(buf, "%d\n", !!test_bit(HALS_USB_CHARGING_STATE_BIT, &hals)); 701 } 702 703 static ssize_t usb_charging_store(struct device *dev, 704 struct device_attribute *attr, 705 const char *buf, size_t count) 706 { 707 struct ideapad_private *priv = dev_get_drvdata(dev); 708 bool state; 709 int err; 710 711 err = kstrtobool(buf, &state); 712 if (err) 713 return err; 714 715 err = exec_sals(priv->adev->handle, state ? SALS_USB_CHARGING_ON : SALS_USB_CHARGING_OFF); 716 if (err) 717 return err; 718 719 return count; 720 } 721 722 static DEVICE_ATTR_RW(usb_charging); 723 724 static struct attribute *ideapad_attributes[] = { 725 &dev_attr_camera_power.attr, 726 &dev_attr_conservation_mode.attr, 727 &dev_attr_fan_mode.attr, 728 &dev_attr_fn_lock.attr, 729 &dev_attr_touchpad.attr, 730 &dev_attr_usb_charging.attr, 731 NULL 732 }; 733 734 static umode_t ideapad_is_visible(struct kobject *kobj, 735 struct attribute *attr, 736 int idx) 737 { 738 struct device *dev = kobj_to_dev(kobj); 739 struct ideapad_private *priv = dev_get_drvdata(dev); 740 bool supported = true; 741 742 if (attr == &dev_attr_camera_power.attr) 743 supported = test_bit(CFG_CAP_CAM_BIT, &priv->cfg); 744 else if (attr == &dev_attr_conservation_mode.attr) 745 supported = priv->features.conservation_mode; 746 else if (attr == &dev_attr_fan_mode.attr) 747 supported = priv->features.fan_mode; 748 else if (attr == &dev_attr_fn_lock.attr) 749 supported = priv->features.fn_lock; 750 else if (attr == &dev_attr_touchpad.attr) 751 supported = priv->features.touchpad_ctrl_via_ec; 752 else if (attr == &dev_attr_usb_charging.attr) 753 supported = priv->features.usb_charging; 754 755 return supported ? attr->mode : 0; 756 } 757 758 static const struct attribute_group ideapad_attribute_group = { 759 .is_visible = ideapad_is_visible, 760 .attrs = ideapad_attributes 761 }; 762 763 /* 764 * DYTC Platform profile 765 */ 766 #define DYTC_CMD_QUERY 0 /* To get DYTC status - enable/revision */ 767 #define DYTC_CMD_SET 1 /* To enable/disable IC function mode */ 768 #define DYTC_CMD_GET 2 /* To get current IC function and mode */ 769 #define DYTC_CMD_RESET 0x1ff /* To reset back to default */ 770 771 #define DYTC_QUERY_ENABLE_BIT 8 /* Bit 8 - 0 = disabled, 1 = enabled */ 772 #define DYTC_QUERY_SUBREV_BIT 16 /* Bits 16 - 27 - sub revision */ 773 #define DYTC_QUERY_REV_BIT 28 /* Bits 28 - 31 - revision */ 774 775 #define DYTC_GET_FUNCTION_BIT 8 /* Bits 8-11 - function setting */ 776 #define DYTC_GET_MODE_BIT 12 /* Bits 12-15 - mode setting */ 777 778 #define DYTC_SET_FUNCTION_BIT 12 /* Bits 12-15 - function setting */ 779 #define DYTC_SET_MODE_BIT 16 /* Bits 16-19 - mode setting */ 780 #define DYTC_SET_VALID_BIT 20 /* Bit 20 - 1 = on, 0 = off */ 781 782 #define DYTC_FUNCTION_STD 0 /* Function = 0, standard mode */ 783 #define DYTC_FUNCTION_CQL 1 /* Function = 1, lap mode */ 784 #define DYTC_FUNCTION_MMC 11 /* Function = 11, desk mode */ 785 786 #define DYTC_MODE_PERFORM 2 /* High power mode aka performance */ 787 #define DYTC_MODE_LOW_POWER 3 /* Low power mode aka quiet */ 788 #define DYTC_MODE_BALANCE 0xF /* Default mode aka balanced */ 789 790 #define DYTC_SET_COMMAND(function, mode, on) \ 791 (DYTC_CMD_SET | (function) << DYTC_SET_FUNCTION_BIT | \ 792 (mode) << DYTC_SET_MODE_BIT | \ 793 (on) << DYTC_SET_VALID_BIT) 794 795 #define DYTC_DISABLE_CQL DYTC_SET_COMMAND(DYTC_FUNCTION_CQL, DYTC_MODE_BALANCE, 0) 796 797 #define DYTC_ENABLE_CQL DYTC_SET_COMMAND(DYTC_FUNCTION_CQL, DYTC_MODE_BALANCE, 1) 798 799 static int convert_dytc_to_profile(int dytcmode, enum platform_profile_option *profile) 800 { 801 switch (dytcmode) { 802 case DYTC_MODE_LOW_POWER: 803 *profile = PLATFORM_PROFILE_LOW_POWER; 804 break; 805 case DYTC_MODE_BALANCE: 806 *profile = PLATFORM_PROFILE_BALANCED; 807 break; 808 case DYTC_MODE_PERFORM: 809 *profile = PLATFORM_PROFILE_PERFORMANCE; 810 break; 811 default: /* Unknown mode */ 812 return -EINVAL; 813 } 814 815 return 0; 816 } 817 818 static int convert_profile_to_dytc(enum platform_profile_option profile, int *perfmode) 819 { 820 switch (profile) { 821 case PLATFORM_PROFILE_LOW_POWER: 822 *perfmode = DYTC_MODE_LOW_POWER; 823 break; 824 case PLATFORM_PROFILE_BALANCED: 825 *perfmode = DYTC_MODE_BALANCE; 826 break; 827 case PLATFORM_PROFILE_PERFORMANCE: 828 *perfmode = DYTC_MODE_PERFORM; 829 break; 830 default: /* Unknown profile */ 831 return -EOPNOTSUPP; 832 } 833 834 return 0; 835 } 836 837 /* 838 * dytc_profile_get: Function to register with platform_profile 839 * handler. Returns current platform profile. 840 */ 841 static int dytc_profile_get(struct platform_profile_handler *pprof, 842 enum platform_profile_option *profile) 843 { 844 struct ideapad_dytc_priv *dytc = container_of(pprof, struct ideapad_dytc_priv, pprof); 845 846 *profile = dytc->current_profile; 847 return 0; 848 } 849 850 /* 851 * Helper function - check if we are in CQL mode and if we are 852 * - disable CQL, 853 * - run the command 854 * - enable CQL 855 * If not in CQL mode, just run the command 856 */ 857 static int dytc_cql_command(struct ideapad_private *priv, unsigned long cmd, 858 unsigned long *output) 859 { 860 int err, cmd_err, cur_funcmode; 861 862 /* Determine if we are in CQL mode. This alters the commands we do */ 863 err = eval_dytc(priv->adev->handle, DYTC_CMD_GET, output); 864 if (err) 865 return err; 866 867 cur_funcmode = (*output >> DYTC_GET_FUNCTION_BIT) & 0xF; 868 /* Check if we're OK to return immediately */ 869 if (cmd == DYTC_CMD_GET && cur_funcmode != DYTC_FUNCTION_CQL) 870 return 0; 871 872 if (cur_funcmode == DYTC_FUNCTION_CQL) { 873 err = eval_dytc(priv->adev->handle, DYTC_DISABLE_CQL, NULL); 874 if (err) 875 return err; 876 } 877 878 cmd_err = eval_dytc(priv->adev->handle, cmd, output); 879 /* Check return condition after we've restored CQL state */ 880 881 if (cur_funcmode == DYTC_FUNCTION_CQL) { 882 err = eval_dytc(priv->adev->handle, DYTC_ENABLE_CQL, NULL); 883 if (err) 884 return err; 885 } 886 887 return cmd_err; 888 } 889 890 /* 891 * dytc_profile_set: Function to register with platform_profile 892 * handler. Sets current platform profile. 893 */ 894 static int dytc_profile_set(struct platform_profile_handler *pprof, 895 enum platform_profile_option profile) 896 { 897 struct ideapad_dytc_priv *dytc = container_of(pprof, struct ideapad_dytc_priv, pprof); 898 struct ideapad_private *priv = dytc->priv; 899 unsigned long output; 900 int err; 901 902 err = mutex_lock_interruptible(&dytc->mutex); 903 if (err) 904 return err; 905 906 if (profile == PLATFORM_PROFILE_BALANCED) { 907 /* To get back to balanced mode we just issue a reset command */ 908 err = eval_dytc(priv->adev->handle, DYTC_CMD_RESET, NULL); 909 if (err) 910 goto unlock; 911 } else { 912 int perfmode; 913 914 err = convert_profile_to_dytc(profile, &perfmode); 915 if (err) 916 goto unlock; 917 918 /* Determine if we are in CQL mode. This alters the commands we do */ 919 err = dytc_cql_command(priv, DYTC_SET_COMMAND(DYTC_FUNCTION_MMC, perfmode, 1), 920 &output); 921 if (err) 922 goto unlock; 923 } 924 925 /* Success - update current profile */ 926 dytc->current_profile = profile; 927 928 unlock: 929 mutex_unlock(&dytc->mutex); 930 931 return err; 932 } 933 934 static void dytc_profile_refresh(struct ideapad_private *priv) 935 { 936 enum platform_profile_option profile; 937 unsigned long output; 938 int err, perfmode; 939 940 mutex_lock(&priv->dytc->mutex); 941 err = dytc_cql_command(priv, DYTC_CMD_GET, &output); 942 mutex_unlock(&priv->dytc->mutex); 943 if (err) 944 return; 945 946 perfmode = (output >> DYTC_GET_MODE_BIT) & 0xF; 947 948 if (convert_dytc_to_profile(perfmode, &profile)) 949 return; 950 951 if (profile != priv->dytc->current_profile) { 952 priv->dytc->current_profile = profile; 953 platform_profile_notify(); 954 } 955 } 956 957 static const struct dmi_system_id ideapad_dytc_v4_allow_table[] = { 958 { 959 /* Ideapad 5 Pro 16ACH6 */ 960 .matches = { 961 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 962 DMI_MATCH(DMI_PRODUCT_NAME, "82L5") 963 } 964 }, 965 { 966 /* Ideapad 5 15ITL05 */ 967 .matches = { 968 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 969 DMI_MATCH(DMI_PRODUCT_VERSION, "IdeaPad 5 15ITL05") 970 } 971 }, 972 {} 973 }; 974 975 static int ideapad_dytc_profile_init(struct ideapad_private *priv) 976 { 977 int err, dytc_version; 978 unsigned long output; 979 980 if (!priv->features.dytc) 981 return -ENODEV; 982 983 err = eval_dytc(priv->adev->handle, DYTC_CMD_QUERY, &output); 984 /* For all other errors we can flag the failure */ 985 if (err) 986 return err; 987 988 /* Check DYTC is enabled and supports mode setting */ 989 if (!test_bit(DYTC_QUERY_ENABLE_BIT, &output)) { 990 dev_info(&priv->platform_device->dev, "DYTC_QUERY_ENABLE_BIT returned false\n"); 991 return -ENODEV; 992 } 993 994 dytc_version = (output >> DYTC_QUERY_REV_BIT) & 0xF; 995 996 if (dytc_version < 4) { 997 dev_info(&priv->platform_device->dev, "DYTC_VERSION < 4 is not supported\n"); 998 return -ENODEV; 999 } 1000 1001 if (dytc_version < 5 && 1002 !(allow_v4_dytc || dmi_check_system(ideapad_dytc_v4_allow_table))) { 1003 dev_info(&priv->platform_device->dev, 1004 "DYTC_VERSION 4 support may not work. Pass ideapad_laptop.allow_v4_dytc=Y on the kernel commandline to enable\n"); 1005 return -ENODEV; 1006 } 1007 1008 priv->dytc = kzalloc(sizeof(*priv->dytc), GFP_KERNEL); 1009 if (!priv->dytc) 1010 return -ENOMEM; 1011 1012 mutex_init(&priv->dytc->mutex); 1013 1014 priv->dytc->priv = priv; 1015 priv->dytc->pprof.profile_get = dytc_profile_get; 1016 priv->dytc->pprof.profile_set = dytc_profile_set; 1017 1018 /* Setup supported modes */ 1019 set_bit(PLATFORM_PROFILE_LOW_POWER, priv->dytc->pprof.choices); 1020 set_bit(PLATFORM_PROFILE_BALANCED, priv->dytc->pprof.choices); 1021 set_bit(PLATFORM_PROFILE_PERFORMANCE, priv->dytc->pprof.choices); 1022 1023 /* Create platform_profile structure and register */ 1024 err = platform_profile_register(&priv->dytc->pprof); 1025 if (err) 1026 goto pp_reg_failed; 1027 1028 /* Ensure initial values are correct */ 1029 dytc_profile_refresh(priv); 1030 1031 return 0; 1032 1033 pp_reg_failed: 1034 mutex_destroy(&priv->dytc->mutex); 1035 kfree(priv->dytc); 1036 priv->dytc = NULL; 1037 1038 return err; 1039 } 1040 1041 static void ideapad_dytc_profile_exit(struct ideapad_private *priv) 1042 { 1043 if (!priv->dytc) 1044 return; 1045 1046 platform_profile_remove(); 1047 mutex_destroy(&priv->dytc->mutex); 1048 kfree(priv->dytc); 1049 1050 priv->dytc = NULL; 1051 } 1052 1053 /* 1054 * Rfkill 1055 */ 1056 struct ideapad_rfk_data { 1057 char *name; 1058 int cfgbit; 1059 int opcode; 1060 int type; 1061 }; 1062 1063 static const struct ideapad_rfk_data ideapad_rfk_data[] = { 1064 { "ideapad_wlan", CFG_CAP_WIFI_BIT, VPCCMD_W_WIFI, RFKILL_TYPE_WLAN }, 1065 { "ideapad_bluetooth", CFG_CAP_BT_BIT, VPCCMD_W_BT, RFKILL_TYPE_BLUETOOTH }, 1066 { "ideapad_3g", CFG_CAP_3G_BIT, VPCCMD_W_3G, RFKILL_TYPE_WWAN }, 1067 }; 1068 1069 static int ideapad_rfk_set(void *data, bool blocked) 1070 { 1071 struct ideapad_rfk_priv *priv = data; 1072 int opcode = ideapad_rfk_data[priv->dev].opcode; 1073 1074 return write_ec_cmd(priv->priv->adev->handle, opcode, !blocked); 1075 } 1076 1077 static const struct rfkill_ops ideapad_rfk_ops = { 1078 .set_block = ideapad_rfk_set, 1079 }; 1080 1081 static void ideapad_sync_rfk_state(struct ideapad_private *priv) 1082 { 1083 unsigned long hw_blocked = 0; 1084 int i; 1085 1086 if (priv->features.hw_rfkill_switch) { 1087 if (read_ec_data(priv->adev->handle, VPCCMD_R_RF, &hw_blocked)) 1088 return; 1089 hw_blocked = !hw_blocked; 1090 } 1091 1092 for (i = 0; i < IDEAPAD_RFKILL_DEV_NUM; i++) 1093 if (priv->rfk[i]) 1094 rfkill_set_hw_state(priv->rfk[i], hw_blocked); 1095 } 1096 1097 static int ideapad_register_rfkill(struct ideapad_private *priv, int dev) 1098 { 1099 unsigned long rf_enabled; 1100 int err; 1101 1102 if (no_bt_rfkill && ideapad_rfk_data[dev].type == RFKILL_TYPE_BLUETOOTH) { 1103 /* Force to enable bluetooth when no_bt_rfkill=1 */ 1104 write_ec_cmd(priv->adev->handle, ideapad_rfk_data[dev].opcode, 1); 1105 return 0; 1106 } 1107 1108 priv->rfk_priv[dev].dev = dev; 1109 priv->rfk_priv[dev].priv = priv; 1110 1111 priv->rfk[dev] = rfkill_alloc(ideapad_rfk_data[dev].name, 1112 &priv->platform_device->dev, 1113 ideapad_rfk_data[dev].type, 1114 &ideapad_rfk_ops, 1115 &priv->rfk_priv[dev]); 1116 if (!priv->rfk[dev]) 1117 return -ENOMEM; 1118 1119 err = read_ec_data(priv->adev->handle, ideapad_rfk_data[dev].opcode - 1, &rf_enabled); 1120 if (err) 1121 rf_enabled = 1; 1122 1123 rfkill_init_sw_state(priv->rfk[dev], !rf_enabled); 1124 1125 err = rfkill_register(priv->rfk[dev]); 1126 if (err) 1127 rfkill_destroy(priv->rfk[dev]); 1128 1129 return err; 1130 } 1131 1132 static void ideapad_unregister_rfkill(struct ideapad_private *priv, int dev) 1133 { 1134 if (!priv->rfk[dev]) 1135 return; 1136 1137 rfkill_unregister(priv->rfk[dev]); 1138 rfkill_destroy(priv->rfk[dev]); 1139 } 1140 1141 /* 1142 * Platform device 1143 */ 1144 static int ideapad_sysfs_init(struct ideapad_private *priv) 1145 { 1146 return device_add_group(&priv->platform_device->dev, 1147 &ideapad_attribute_group); 1148 } 1149 1150 static void ideapad_sysfs_exit(struct ideapad_private *priv) 1151 { 1152 device_remove_group(&priv->platform_device->dev, 1153 &ideapad_attribute_group); 1154 } 1155 1156 /* 1157 * input device 1158 */ 1159 #define IDEAPAD_WMI_KEY 0x100 1160 1161 static const struct key_entry ideapad_keymap[] = { 1162 { KE_KEY, 6, { KEY_SWITCHVIDEOMODE } }, 1163 { KE_KEY, 7, { KEY_CAMERA } }, 1164 { KE_KEY, 8, { KEY_MICMUTE } }, 1165 { KE_KEY, 11, { KEY_F16 } }, 1166 { KE_KEY, 13, { KEY_WLAN } }, 1167 { KE_KEY, 16, { KEY_PROG1 } }, 1168 { KE_KEY, 17, { KEY_PROG2 } }, 1169 { KE_KEY, 64, { KEY_PROG3 } }, 1170 { KE_KEY, 65, { KEY_PROG4 } }, 1171 { KE_KEY, 66, { KEY_TOUCHPAD_OFF } }, 1172 { KE_KEY, 67, { KEY_TOUCHPAD_ON } }, 1173 { KE_KEY, 128, { KEY_ESC } }, 1174 1175 /* 1176 * WMI keys 1177 */ 1178 1179 /* FnLock (handled by the firmware) */ 1180 { KE_IGNORE, 0x02 | IDEAPAD_WMI_KEY }, 1181 /* Esc (handled by the firmware) */ 1182 { KE_IGNORE, 0x03 | IDEAPAD_WMI_KEY }, 1183 /* Customizable Lenovo Hotkey ("star" with 'S' inside) */ 1184 { KE_KEY, 0x01 | IDEAPAD_WMI_KEY, { KEY_FAVORITES } }, 1185 /* Dark mode toggle */ 1186 { KE_KEY, 0x13 | IDEAPAD_WMI_KEY, { KEY_PROG1 } }, 1187 /* Sound profile switch */ 1188 { KE_KEY, 0x12 | IDEAPAD_WMI_KEY, { KEY_PROG2 } }, 1189 /* Lenovo Virtual Background application */ 1190 { KE_KEY, 0x28 | IDEAPAD_WMI_KEY, { KEY_PROG3 } }, 1191 /* Lenovo Support */ 1192 { KE_KEY, 0x27 | IDEAPAD_WMI_KEY, { KEY_HELP } }, 1193 /* Refresh Rate Toggle */ 1194 { KE_KEY, 0x0a | IDEAPAD_WMI_KEY, { KEY_DISPLAYTOGGLE } }, 1195 1196 { KE_END }, 1197 }; 1198 1199 static int ideapad_input_init(struct ideapad_private *priv) 1200 { 1201 struct input_dev *inputdev; 1202 int err; 1203 1204 inputdev = input_allocate_device(); 1205 if (!inputdev) 1206 return -ENOMEM; 1207 1208 inputdev->name = "Ideapad extra buttons"; 1209 inputdev->phys = "ideapad/input0"; 1210 inputdev->id.bustype = BUS_HOST; 1211 inputdev->dev.parent = &priv->platform_device->dev; 1212 1213 err = sparse_keymap_setup(inputdev, ideapad_keymap, NULL); 1214 if (err) { 1215 dev_err(&priv->platform_device->dev, 1216 "Could not set up input device keymap: %d\n", err); 1217 goto err_free_dev; 1218 } 1219 1220 err = input_register_device(inputdev); 1221 if (err) { 1222 dev_err(&priv->platform_device->dev, 1223 "Could not register input device: %d\n", err); 1224 goto err_free_dev; 1225 } 1226 1227 priv->inputdev = inputdev; 1228 1229 return 0; 1230 1231 err_free_dev: 1232 input_free_device(inputdev); 1233 1234 return err; 1235 } 1236 1237 static void ideapad_input_exit(struct ideapad_private *priv) 1238 { 1239 input_unregister_device(priv->inputdev); 1240 priv->inputdev = NULL; 1241 } 1242 1243 static void ideapad_input_report(struct ideapad_private *priv, 1244 unsigned long scancode) 1245 { 1246 sparse_keymap_report_event(priv->inputdev, scancode, 1, true); 1247 } 1248 1249 static void ideapad_input_novokey(struct ideapad_private *priv) 1250 { 1251 unsigned long long_pressed; 1252 1253 if (read_ec_data(priv->adev->handle, VPCCMD_R_NOVO, &long_pressed)) 1254 return; 1255 1256 if (long_pressed) 1257 ideapad_input_report(priv, 17); 1258 else 1259 ideapad_input_report(priv, 16); 1260 } 1261 1262 static void ideapad_check_special_buttons(struct ideapad_private *priv) 1263 { 1264 unsigned long bit, value; 1265 1266 if (read_ec_data(priv->adev->handle, VPCCMD_R_SPECIAL_BUTTONS, &value)) 1267 return; 1268 1269 for_each_set_bit (bit, &value, 16) { 1270 switch (bit) { 1271 case 6: /* Z570 */ 1272 case 0: /* Z580 */ 1273 /* Thermal Management button */ 1274 ideapad_input_report(priv, 65); 1275 break; 1276 case 1: 1277 /* OneKey Theater button */ 1278 ideapad_input_report(priv, 64); 1279 break; 1280 default: 1281 dev_info(&priv->platform_device->dev, 1282 "Unknown special button: %lu\n", bit); 1283 break; 1284 } 1285 } 1286 } 1287 1288 /* 1289 * backlight 1290 */ 1291 static int ideapad_backlight_get_brightness(struct backlight_device *blightdev) 1292 { 1293 struct ideapad_private *priv = bl_get_data(blightdev); 1294 unsigned long now; 1295 int err; 1296 1297 err = read_ec_data(priv->adev->handle, VPCCMD_R_BL, &now); 1298 if (err) 1299 return err; 1300 1301 return now; 1302 } 1303 1304 static int ideapad_backlight_update_status(struct backlight_device *blightdev) 1305 { 1306 struct ideapad_private *priv = bl_get_data(blightdev); 1307 int err; 1308 1309 err = write_ec_cmd(priv->adev->handle, VPCCMD_W_BL, 1310 blightdev->props.brightness); 1311 if (err) 1312 return err; 1313 1314 err = write_ec_cmd(priv->adev->handle, VPCCMD_W_BL_POWER, 1315 blightdev->props.power != FB_BLANK_POWERDOWN); 1316 if (err) 1317 return err; 1318 1319 return 0; 1320 } 1321 1322 static const struct backlight_ops ideapad_backlight_ops = { 1323 .get_brightness = ideapad_backlight_get_brightness, 1324 .update_status = ideapad_backlight_update_status, 1325 }; 1326 1327 static int ideapad_backlight_init(struct ideapad_private *priv) 1328 { 1329 struct backlight_device *blightdev; 1330 struct backlight_properties props; 1331 unsigned long max, now, power; 1332 int err; 1333 1334 err = read_ec_data(priv->adev->handle, VPCCMD_R_BL_MAX, &max); 1335 if (err) 1336 return err; 1337 1338 err = read_ec_data(priv->adev->handle, VPCCMD_R_BL, &now); 1339 if (err) 1340 return err; 1341 1342 err = read_ec_data(priv->adev->handle, VPCCMD_R_BL_POWER, &power); 1343 if (err) 1344 return err; 1345 1346 memset(&props, 0, sizeof(props)); 1347 1348 props.max_brightness = max; 1349 props.type = BACKLIGHT_PLATFORM; 1350 1351 blightdev = backlight_device_register("ideapad", 1352 &priv->platform_device->dev, 1353 priv, 1354 &ideapad_backlight_ops, 1355 &props); 1356 if (IS_ERR(blightdev)) { 1357 err = PTR_ERR(blightdev); 1358 dev_err(&priv->platform_device->dev, 1359 "Could not register backlight device: %d\n", err); 1360 return err; 1361 } 1362 1363 priv->blightdev = blightdev; 1364 blightdev->props.brightness = now; 1365 blightdev->props.power = power ? FB_BLANK_UNBLANK : FB_BLANK_POWERDOWN; 1366 1367 backlight_update_status(blightdev); 1368 1369 return 0; 1370 } 1371 1372 static void ideapad_backlight_exit(struct ideapad_private *priv) 1373 { 1374 backlight_device_unregister(priv->blightdev); 1375 priv->blightdev = NULL; 1376 } 1377 1378 static void ideapad_backlight_notify_power(struct ideapad_private *priv) 1379 { 1380 struct backlight_device *blightdev = priv->blightdev; 1381 unsigned long power; 1382 1383 if (!blightdev) 1384 return; 1385 1386 if (read_ec_data(priv->adev->handle, VPCCMD_R_BL_POWER, &power)) 1387 return; 1388 1389 blightdev->props.power = power ? FB_BLANK_UNBLANK : FB_BLANK_POWERDOWN; 1390 } 1391 1392 static void ideapad_backlight_notify_brightness(struct ideapad_private *priv) 1393 { 1394 unsigned long now; 1395 1396 /* if we control brightness via acpi video driver */ 1397 if (!priv->blightdev) 1398 read_ec_data(priv->adev->handle, VPCCMD_R_BL, &now); 1399 else 1400 backlight_force_update(priv->blightdev, BACKLIGHT_UPDATE_HOTKEY); 1401 } 1402 1403 /* 1404 * keyboard backlight 1405 */ 1406 static int ideapad_kbd_bl_brightness_get(struct ideapad_private *priv) 1407 { 1408 unsigned long hals; 1409 int err; 1410 1411 err = eval_hals(priv->adev->handle, &hals); 1412 if (err) 1413 return err; 1414 1415 return !!test_bit(HALS_KBD_BL_STATE_BIT, &hals); 1416 } 1417 1418 static enum led_brightness ideapad_kbd_bl_led_cdev_brightness_get(struct led_classdev *led_cdev) 1419 { 1420 struct ideapad_private *priv = container_of(led_cdev, struct ideapad_private, kbd_bl.led); 1421 1422 return ideapad_kbd_bl_brightness_get(priv); 1423 } 1424 1425 static int ideapad_kbd_bl_brightness_set(struct ideapad_private *priv, unsigned int brightness) 1426 { 1427 int err = exec_sals(priv->adev->handle, brightness ? SALS_KBD_BL_ON : SALS_KBD_BL_OFF); 1428 1429 if (err) 1430 return err; 1431 1432 priv->kbd_bl.last_brightness = brightness; 1433 1434 return 0; 1435 } 1436 1437 static int ideapad_kbd_bl_led_cdev_brightness_set(struct led_classdev *led_cdev, 1438 enum led_brightness brightness) 1439 { 1440 struct ideapad_private *priv = container_of(led_cdev, struct ideapad_private, kbd_bl.led); 1441 1442 return ideapad_kbd_bl_brightness_set(priv, brightness); 1443 } 1444 1445 static void ideapad_kbd_bl_notify(struct ideapad_private *priv) 1446 { 1447 int brightness; 1448 1449 if (!priv->kbd_bl.initialized) 1450 return; 1451 1452 brightness = ideapad_kbd_bl_brightness_get(priv); 1453 if (brightness < 0) 1454 return; 1455 1456 if (brightness == priv->kbd_bl.last_brightness) 1457 return; 1458 1459 priv->kbd_bl.last_brightness = brightness; 1460 1461 led_classdev_notify_brightness_hw_changed(&priv->kbd_bl.led, brightness); 1462 } 1463 1464 static int ideapad_kbd_bl_init(struct ideapad_private *priv) 1465 { 1466 int brightness, err; 1467 1468 if (!priv->features.kbd_bl) 1469 return -ENODEV; 1470 1471 if (WARN_ON(priv->kbd_bl.initialized)) 1472 return -EEXIST; 1473 1474 brightness = ideapad_kbd_bl_brightness_get(priv); 1475 if (brightness < 0) 1476 return brightness; 1477 1478 priv->kbd_bl.last_brightness = brightness; 1479 1480 priv->kbd_bl.led.name = "platform::" LED_FUNCTION_KBD_BACKLIGHT; 1481 priv->kbd_bl.led.max_brightness = 1; 1482 priv->kbd_bl.led.brightness_get = ideapad_kbd_bl_led_cdev_brightness_get; 1483 priv->kbd_bl.led.brightness_set_blocking = ideapad_kbd_bl_led_cdev_brightness_set; 1484 priv->kbd_bl.led.flags = LED_BRIGHT_HW_CHANGED; 1485 1486 err = led_classdev_register(&priv->platform_device->dev, &priv->kbd_bl.led); 1487 if (err) 1488 return err; 1489 1490 priv->kbd_bl.initialized = true; 1491 1492 return 0; 1493 } 1494 1495 static void ideapad_kbd_bl_exit(struct ideapad_private *priv) 1496 { 1497 if (!priv->kbd_bl.initialized) 1498 return; 1499 1500 priv->kbd_bl.initialized = false; 1501 1502 led_classdev_unregister(&priv->kbd_bl.led); 1503 } 1504 1505 /* 1506 * module init/exit 1507 */ 1508 static void ideapad_sync_touchpad_state(struct ideapad_private *priv, bool send_events) 1509 { 1510 unsigned long value; 1511 unsigned char param; 1512 int ret; 1513 1514 /* Without reading from EC touchpad LED doesn't switch state */ 1515 ret = read_ec_data(priv->adev->handle, VPCCMD_R_TOUCHPAD, &value); 1516 if (ret) 1517 return; 1518 1519 /* 1520 * Some IdeaPads don't really turn off touchpad - they only 1521 * switch the LED state. We (de)activate KBC AUX port to turn 1522 * touchpad off and on. We send KEY_TOUCHPAD_OFF and 1523 * KEY_TOUCHPAD_ON to not to get out of sync with LED 1524 */ 1525 if (priv->features.ctrl_ps2_aux_port) 1526 i8042_command(¶m, value ? I8042_CMD_AUX_ENABLE : I8042_CMD_AUX_DISABLE); 1527 1528 /* 1529 * On older models the EC controls the touchpad and toggles it on/off 1530 * itself, in this case we report KEY_TOUCHPAD_ON/_OFF. Some models do 1531 * an acpi-notify with VPC bit 5 set on resume, so this function get 1532 * called with send_events=true on every resume. Therefor if the EC did 1533 * not toggle, do nothing to avoid sending spurious KEY_TOUCHPAD_TOGGLE. 1534 */ 1535 if (send_events && value != priv->r_touchpad_val) { 1536 ideapad_input_report(priv, value ? 67 : 66); 1537 sysfs_notify(&priv->platform_device->dev.kobj, NULL, "touchpad"); 1538 } 1539 1540 priv->r_touchpad_val = value; 1541 } 1542 1543 static void ideapad_acpi_notify(acpi_handle handle, u32 event, void *data) 1544 { 1545 struct ideapad_private *priv = data; 1546 unsigned long vpc1, vpc2, bit; 1547 1548 if (read_ec_data(handle, VPCCMD_R_VPC1, &vpc1)) 1549 return; 1550 1551 if (read_ec_data(handle, VPCCMD_R_VPC2, &vpc2)) 1552 return; 1553 1554 vpc1 = (vpc2 << 8) | vpc1; 1555 1556 for_each_set_bit (bit, &vpc1, 16) { 1557 switch (bit) { 1558 case 13: 1559 case 11: 1560 case 8: 1561 case 7: 1562 case 6: 1563 ideapad_input_report(priv, bit); 1564 break; 1565 case 10: 1566 /* 1567 * This event gets send on a Yoga 300-11IBR when the EC 1568 * believes that the device has changed between laptop/ 1569 * tent/stand/tablet mode. The EC relies on getting 1570 * angle info from 2 accelerometers through a special 1571 * windows service calling a DSM on the DUAL250E ACPI- 1572 * device. Linux does not do this, making the laptop/ 1573 * tent/stand/tablet mode info unreliable, so we simply 1574 * ignore these events. 1575 */ 1576 break; 1577 case 9: 1578 ideapad_sync_rfk_state(priv); 1579 break; 1580 case 5: 1581 ideapad_sync_touchpad_state(priv, true); 1582 break; 1583 case 4: 1584 ideapad_backlight_notify_brightness(priv); 1585 break; 1586 case 3: 1587 ideapad_input_novokey(priv); 1588 break; 1589 case 2: 1590 ideapad_backlight_notify_power(priv); 1591 break; 1592 case 1: 1593 /* 1594 * Some IdeaPads report event 1 every ~20 1595 * seconds while on battery power; some 1596 * report this when changing to/from tablet 1597 * mode; some report this when the keyboard 1598 * backlight has changed. 1599 */ 1600 ideapad_kbd_bl_notify(priv); 1601 break; 1602 case 0: 1603 ideapad_check_special_buttons(priv); 1604 break; 1605 default: 1606 dev_info(&priv->platform_device->dev, 1607 "Unknown event: %lu\n", bit); 1608 } 1609 } 1610 } 1611 1612 /* On some models we need to call exec_sals(SALS_FNLOCK_ON/OFF) to set the LED */ 1613 static const struct dmi_system_id set_fn_lock_led_list[] = { 1614 { 1615 /* https://bugzilla.kernel.org/show_bug.cgi?id=212671 */ 1616 .matches = { 1617 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 1618 DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo Legion R7000P2020H"), 1619 } 1620 }, 1621 { 1622 .matches = { 1623 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 1624 DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo Legion 5 15ARH05"), 1625 } 1626 }, 1627 {} 1628 }; 1629 1630 /* 1631 * Some ideapads have a hardware rfkill switch, but most do not have one. 1632 * Reading VPCCMD_R_RF always results in 0 on models without a hardware rfkill, 1633 * switch causing ideapad_laptop to wrongly report all radios as hw-blocked. 1634 * There used to be a long list of DMI ids for models without a hw rfkill 1635 * switch here, but that resulted in playing whack a mole. 1636 * More importantly wrongly reporting the wifi radio as hw-blocked, results in 1637 * non working wifi. Whereas not reporting it hw-blocked, when it actually is 1638 * hw-blocked results in an empty SSID list, which is a much more benign 1639 * failure mode. 1640 * So the default now is the much safer option of assuming there is no 1641 * hardware rfkill switch. This default also actually matches most hardware, 1642 * since having a hw rfkill switch is quite rare on modern hardware, so this 1643 * also leads to a much shorter list. 1644 */ 1645 static const struct dmi_system_id hw_rfkill_list[] = { 1646 {} 1647 }; 1648 1649 /* 1650 * On some models the EC toggles the touchpad muted LED on touchpad toggle 1651 * hotkey presses, but the EC does not actually disable the touchpad itself. 1652 * On these models the driver needs to explicitly enable/disable the i8042 1653 * (PS/2) aux port. 1654 */ 1655 static const struct dmi_system_id ctrl_ps2_aux_port_list[] = { 1656 { 1657 /* Lenovo Ideapad Z570 */ 1658 .matches = { 1659 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 1660 DMI_MATCH(DMI_PRODUCT_VERSION, "Ideapad Z570"), 1661 }, 1662 }, 1663 {} 1664 }; 1665 1666 static void ideapad_check_features(struct ideapad_private *priv) 1667 { 1668 acpi_handle handle = priv->adev->handle; 1669 unsigned long val; 1670 1671 priv->features.set_fn_lock_led = 1672 set_fn_lock_led || dmi_check_system(set_fn_lock_led_list); 1673 priv->features.hw_rfkill_switch = 1674 hw_rfkill_switch || dmi_check_system(hw_rfkill_list); 1675 priv->features.ctrl_ps2_aux_port = 1676 ctrl_ps2_aux_port || dmi_check_system(ctrl_ps2_aux_port_list); 1677 priv->features.touchpad_ctrl_via_ec = touchpad_ctrl_via_ec; 1678 1679 if (!read_ec_data(handle, VPCCMD_R_FAN, &val)) 1680 priv->features.fan_mode = true; 1681 1682 if (acpi_has_method(handle, "GBMD") && acpi_has_method(handle, "SBMC")) 1683 priv->features.conservation_mode = true; 1684 1685 if (acpi_has_method(handle, "DYTC")) 1686 priv->features.dytc = true; 1687 1688 if (acpi_has_method(handle, "HALS") && acpi_has_method(handle, "SALS")) { 1689 if (!eval_hals(handle, &val)) { 1690 if (test_bit(HALS_FNLOCK_SUPPORT_BIT, &val)) 1691 priv->features.fn_lock = true; 1692 1693 if (test_bit(HALS_KBD_BL_SUPPORT_BIT, &val)) 1694 priv->features.kbd_bl = true; 1695 1696 if (test_bit(HALS_USB_CHARGING_SUPPORT_BIT, &val)) 1697 priv->features.usb_charging = true; 1698 } 1699 } 1700 } 1701 1702 #if IS_ENABLED(CONFIG_ACPI_WMI) 1703 /* 1704 * WMI driver 1705 */ 1706 enum ideapad_wmi_event_type { 1707 IDEAPAD_WMI_EVENT_ESC, 1708 IDEAPAD_WMI_EVENT_FN_KEYS, 1709 }; 1710 1711 struct ideapad_wmi_private { 1712 enum ideapad_wmi_event_type event; 1713 }; 1714 1715 static int ideapad_wmi_probe(struct wmi_device *wdev, const void *context) 1716 { 1717 struct ideapad_wmi_private *wpriv; 1718 1719 wpriv = devm_kzalloc(&wdev->dev, sizeof(*wpriv), GFP_KERNEL); 1720 if (!wpriv) 1721 return -ENOMEM; 1722 1723 *wpriv = *(const struct ideapad_wmi_private *)context; 1724 1725 dev_set_drvdata(&wdev->dev, wpriv); 1726 return 0; 1727 } 1728 1729 static void ideapad_wmi_notify(struct wmi_device *wdev, union acpi_object *data) 1730 { 1731 struct ideapad_wmi_private *wpriv = dev_get_drvdata(&wdev->dev); 1732 struct ideapad_private *priv; 1733 unsigned long result; 1734 1735 mutex_lock(&ideapad_shared_mutex); 1736 1737 priv = ideapad_shared; 1738 if (!priv) 1739 goto unlock; 1740 1741 switch (wpriv->event) { 1742 case IDEAPAD_WMI_EVENT_ESC: 1743 ideapad_input_report(priv, 128); 1744 break; 1745 case IDEAPAD_WMI_EVENT_FN_KEYS: 1746 if (priv->features.set_fn_lock_led && 1747 !eval_hals(priv->adev->handle, &result)) { 1748 bool state = test_bit(HALS_FNLOCK_STATE_BIT, &result); 1749 1750 exec_sals(priv->adev->handle, state ? SALS_FNLOCK_ON : SALS_FNLOCK_OFF); 1751 } 1752 1753 if (data->type != ACPI_TYPE_INTEGER) { 1754 dev_warn(&wdev->dev, 1755 "WMI event data is not an integer\n"); 1756 break; 1757 } 1758 1759 dev_dbg(&wdev->dev, "WMI fn-key event: 0x%llx\n", 1760 data->integer.value); 1761 1762 ideapad_input_report(priv, 1763 data->integer.value | IDEAPAD_WMI_KEY); 1764 1765 break; 1766 } 1767 unlock: 1768 mutex_unlock(&ideapad_shared_mutex); 1769 } 1770 1771 static const struct ideapad_wmi_private ideapad_wmi_context_esc = { 1772 .event = IDEAPAD_WMI_EVENT_ESC 1773 }; 1774 1775 static const struct ideapad_wmi_private ideapad_wmi_context_fn_keys = { 1776 .event = IDEAPAD_WMI_EVENT_FN_KEYS 1777 }; 1778 1779 static const struct wmi_device_id ideapad_wmi_ids[] = { 1780 { "26CAB2E5-5CF1-46AE-AAC3-4A12B6BA50E6", &ideapad_wmi_context_esc }, /* Yoga 3 */ 1781 { "56322276-8493-4CE8-A783-98C991274F5E", &ideapad_wmi_context_esc }, /* Yoga 700 */ 1782 { "8FC0DE0C-B4E4-43FD-B0F3-8871711C1294", &ideapad_wmi_context_fn_keys }, /* Legion 5 */ 1783 {}, 1784 }; 1785 MODULE_DEVICE_TABLE(wmi, ideapad_wmi_ids); 1786 1787 static struct wmi_driver ideapad_wmi_driver = { 1788 .driver = { 1789 .name = "ideapad_wmi", 1790 }, 1791 .id_table = ideapad_wmi_ids, 1792 .probe = ideapad_wmi_probe, 1793 .notify = ideapad_wmi_notify, 1794 }; 1795 1796 static int ideapad_wmi_driver_register(void) 1797 { 1798 return wmi_driver_register(&ideapad_wmi_driver); 1799 } 1800 1801 static void ideapad_wmi_driver_unregister(void) 1802 { 1803 return wmi_driver_unregister(&ideapad_wmi_driver); 1804 } 1805 1806 #else 1807 static inline int ideapad_wmi_driver_register(void) { return 0; } 1808 static inline void ideapad_wmi_driver_unregister(void) { } 1809 #endif 1810 1811 /* 1812 * ACPI driver 1813 */ 1814 static int ideapad_acpi_add(struct platform_device *pdev) 1815 { 1816 struct acpi_device *adev = ACPI_COMPANION(&pdev->dev); 1817 struct ideapad_private *priv; 1818 acpi_status status; 1819 unsigned long cfg; 1820 int err, i; 1821 1822 if (!adev || eval_int(adev->handle, "_CFG", &cfg)) 1823 return -ENODEV; 1824 1825 priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL); 1826 if (!priv) 1827 return -ENOMEM; 1828 1829 dev_set_drvdata(&pdev->dev, priv); 1830 1831 priv->cfg = cfg; 1832 priv->adev = adev; 1833 priv->platform_device = pdev; 1834 1835 ideapad_check_features(priv); 1836 1837 err = ideapad_sysfs_init(priv); 1838 if (err) 1839 return err; 1840 1841 ideapad_debugfs_init(priv); 1842 1843 err = ideapad_input_init(priv); 1844 if (err) 1845 goto input_failed; 1846 1847 err = ideapad_kbd_bl_init(priv); 1848 if (err) { 1849 if (err != -ENODEV) 1850 dev_warn(&pdev->dev, "Could not set up keyboard backlight LED: %d\n", err); 1851 else 1852 dev_info(&pdev->dev, "Keyboard backlight control not available\n"); 1853 } 1854 1855 /* 1856 * On some models without a hw-switch (the yoga 2 13 at least) 1857 * VPCCMD_W_RF must be explicitly set to 1 for the wifi to work. 1858 */ 1859 if (!priv->features.hw_rfkill_switch) 1860 write_ec_cmd(priv->adev->handle, VPCCMD_W_RF, 1); 1861 1862 for (i = 0; i < IDEAPAD_RFKILL_DEV_NUM; i++) 1863 if (test_bit(ideapad_rfk_data[i].cfgbit, &priv->cfg)) 1864 ideapad_register_rfkill(priv, i); 1865 1866 ideapad_sync_rfk_state(priv); 1867 ideapad_sync_touchpad_state(priv, false); 1868 1869 err = ideapad_dytc_profile_init(priv); 1870 if (err) { 1871 if (err != -ENODEV) 1872 dev_warn(&pdev->dev, "Could not set up DYTC interface: %d\n", err); 1873 else 1874 dev_info(&pdev->dev, "DYTC interface is not available\n"); 1875 } 1876 1877 if (acpi_video_get_backlight_type() == acpi_backlight_vendor) { 1878 err = ideapad_backlight_init(priv); 1879 if (err && err != -ENODEV) 1880 goto backlight_failed; 1881 } 1882 1883 status = acpi_install_notify_handler(adev->handle, 1884 ACPI_DEVICE_NOTIFY, 1885 ideapad_acpi_notify, priv); 1886 if (ACPI_FAILURE(status)) { 1887 err = -EIO; 1888 goto notification_failed; 1889 } 1890 1891 err = ideapad_shared_init(priv); 1892 if (err) 1893 goto shared_init_failed; 1894 1895 return 0; 1896 1897 shared_init_failed: 1898 acpi_remove_notify_handler(priv->adev->handle, 1899 ACPI_DEVICE_NOTIFY, 1900 ideapad_acpi_notify); 1901 1902 notification_failed: 1903 ideapad_backlight_exit(priv); 1904 1905 backlight_failed: 1906 ideapad_dytc_profile_exit(priv); 1907 1908 for (i = 0; i < IDEAPAD_RFKILL_DEV_NUM; i++) 1909 ideapad_unregister_rfkill(priv, i); 1910 1911 ideapad_kbd_bl_exit(priv); 1912 ideapad_input_exit(priv); 1913 1914 input_failed: 1915 ideapad_debugfs_exit(priv); 1916 ideapad_sysfs_exit(priv); 1917 1918 return err; 1919 } 1920 1921 static int ideapad_acpi_remove(struct platform_device *pdev) 1922 { 1923 struct ideapad_private *priv = dev_get_drvdata(&pdev->dev); 1924 int i; 1925 1926 ideapad_shared_exit(priv); 1927 1928 acpi_remove_notify_handler(priv->adev->handle, 1929 ACPI_DEVICE_NOTIFY, 1930 ideapad_acpi_notify); 1931 1932 ideapad_backlight_exit(priv); 1933 ideapad_dytc_profile_exit(priv); 1934 1935 for (i = 0; i < IDEAPAD_RFKILL_DEV_NUM; i++) 1936 ideapad_unregister_rfkill(priv, i); 1937 1938 ideapad_kbd_bl_exit(priv); 1939 ideapad_input_exit(priv); 1940 ideapad_debugfs_exit(priv); 1941 ideapad_sysfs_exit(priv); 1942 1943 return 0; 1944 } 1945 1946 #ifdef CONFIG_PM_SLEEP 1947 static int ideapad_acpi_resume(struct device *dev) 1948 { 1949 struct ideapad_private *priv = dev_get_drvdata(dev); 1950 1951 ideapad_sync_rfk_state(priv); 1952 ideapad_sync_touchpad_state(priv, false); 1953 1954 if (priv->dytc) 1955 dytc_profile_refresh(priv); 1956 1957 return 0; 1958 } 1959 #endif 1960 static SIMPLE_DEV_PM_OPS(ideapad_pm, NULL, ideapad_acpi_resume); 1961 1962 static const struct acpi_device_id ideapad_device_ids[] = { 1963 {"VPC2004", 0}, 1964 {"", 0}, 1965 }; 1966 MODULE_DEVICE_TABLE(acpi, ideapad_device_ids); 1967 1968 static struct platform_driver ideapad_acpi_driver = { 1969 .probe = ideapad_acpi_add, 1970 .remove = ideapad_acpi_remove, 1971 .driver = { 1972 .name = "ideapad_acpi", 1973 .pm = &ideapad_pm, 1974 .acpi_match_table = ACPI_PTR(ideapad_device_ids), 1975 }, 1976 }; 1977 1978 static int __init ideapad_laptop_init(void) 1979 { 1980 int err; 1981 1982 err = ideapad_wmi_driver_register(); 1983 if (err) 1984 return err; 1985 1986 err = platform_driver_register(&ideapad_acpi_driver); 1987 if (err) { 1988 ideapad_wmi_driver_unregister(); 1989 return err; 1990 } 1991 1992 return 0; 1993 } 1994 module_init(ideapad_laptop_init) 1995 1996 static void __exit ideapad_laptop_exit(void) 1997 { 1998 ideapad_wmi_driver_unregister(); 1999 platform_driver_unregister(&ideapad_acpi_driver); 2000 } 2001 module_exit(ideapad_laptop_exit) 2002 2003 MODULE_AUTHOR("David Woodhouse <dwmw2@infradead.org>"); 2004 MODULE_DESCRIPTION("IdeaPad ACPI Extras"); 2005 MODULE_LICENSE("GPL"); 2006