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