1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * Alienware WMAX WMI device driver 4 * 5 * Copyright (C) 2014 Dell Inc <Dell.Client.Kernel@dell.com> 6 * Copyright (C) 2025 Kurt Borja <kuurtb@gmail.com> 7 */ 8 9 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 10 11 #include <linux/array_size.h> 12 #include <linux/bitfield.h> 13 #include <linux/bitmap.h> 14 #include <linux/bits.h> 15 #include <linux/debugfs.h> 16 #include <linux/dmi.h> 17 #include <linux/hwmon.h> 18 #include <linux/hwmon-sysfs.h> 19 #include <linux/kstrtox.h> 20 #include <linux/minmax.h> 21 #include <linux/moduleparam.h> 22 #include <linux/platform_profile.h> 23 #include <linux/pm.h> 24 #include <linux/seq_file.h> 25 #include <linux/units.h> 26 #include <linux/wmi.h> 27 #include "alienware-wmi.h" 28 29 #define WMAX_METHOD_HDMI_SOURCE 0x1 30 #define WMAX_METHOD_HDMI_STATUS 0x2 31 #define WMAX_METHOD_HDMI_CABLE 0x5 32 #define WMAX_METHOD_AMPLIFIER_CABLE 0x6 33 #define WMAX_METHOD_DEEP_SLEEP_CONTROL 0x0B 34 #define WMAX_METHOD_DEEP_SLEEP_STATUS 0x0C 35 #define WMAX_METHOD_BRIGHTNESS 0x3 36 #define WMAX_METHOD_ZONE_CONTROL 0x4 37 38 #define AWCC_METHOD_GET_FAN_SENSORS 0x13 39 #define AWCC_METHOD_THERMAL_INFORMATION 0x14 40 #define AWCC_METHOD_THERMAL_CONTROL 0x15 41 #define AWCC_METHOD_FWUP_GPIO_CONTROL 0x20 42 #define AWCC_METHOD_READ_TOTAL_GPIOS 0x21 43 #define AWCC_METHOD_READ_GPIO_STATUS 0x22 44 #define AWCC_METHOD_GAME_SHIFT_STATUS 0x25 45 46 #define AWCC_FAILURE_CODE 0xFFFFFFFF 47 #define AWCC_FAILURE_CODE_2 0xFFFFFFFE 48 49 #define AWCC_SENSOR_ID_FLAG BIT(8) 50 #define AWCC_THERMAL_MODE_MASK GENMASK(3, 0) 51 #define AWCC_THERMAL_TABLE_MASK GENMASK(7, 4) 52 #define AWCC_RESOURCE_ID_MASK GENMASK(7, 0) 53 54 /* Arbitrary limit based on supported models */ 55 #define AWCC_MAX_RES_COUNT 16 56 #define AWCC_ID_BITMAP_SIZE (U8_MAX + 1) 57 #define AWCC_ID_BITMAP_LONGS BITS_TO_LONGS(AWCC_ID_BITMAP_SIZE) 58 59 static bool force_hwmon; 60 module_param_unsafe(force_hwmon, bool, 0); 61 MODULE_PARM_DESC(force_hwmon, "Force probing for HWMON support without checking if the WMI backend is available"); 62 63 static bool force_platform_profile; 64 module_param_unsafe(force_platform_profile, bool, 0); 65 MODULE_PARM_DESC(force_platform_profile, "Forces auto-detecting thermal profiles without checking if WMI thermal backend is available"); 66 67 static bool force_gmode; 68 module_param_unsafe(force_gmode, bool, 0); 69 MODULE_PARM_DESC(force_gmode, "Forces G-Mode when performance profile is selected"); 70 71 struct awcc_quirks { 72 bool hwmon; 73 bool pprof; 74 bool gmode; 75 }; 76 77 static struct awcc_quirks g_series_quirks = { 78 .hwmon = true, 79 .pprof = true, 80 .gmode = true, 81 }; 82 83 static struct awcc_quirks generic_quirks = { 84 .hwmon = true, 85 .pprof = true, 86 .gmode = false, 87 }; 88 89 static struct awcc_quirks empty_quirks; 90 91 static const struct dmi_system_id awcc_dmi_table[] __initconst = { 92 { 93 .ident = "Alienware Area-51m", 94 .matches = { 95 DMI_MATCH(DMI_SYS_VENDOR, "Alienware"), 96 DMI_MATCH(DMI_PRODUCT_NAME, "Alienware Area-51m"), 97 }, 98 .driver_data = &generic_quirks, 99 }, 100 { 101 .ident = "Alienware Area-51m R2", 102 .matches = { 103 DMI_MATCH(DMI_SYS_VENDOR, "Alienware"), 104 DMI_MATCH(DMI_PRODUCT_NAME, "Alienware Area-51m R2"), 105 }, 106 .driver_data = &generic_quirks, 107 }, 108 { 109 .ident = "Alienware m15 R5", 110 .matches = { 111 DMI_MATCH(DMI_SYS_VENDOR, "Alienware"), 112 DMI_MATCH(DMI_PRODUCT_NAME, "Alienware m15 R5"), 113 }, 114 .driver_data = &generic_quirks, 115 }, 116 { 117 .ident = "Alienware m15 R7", 118 .matches = { 119 DMI_MATCH(DMI_SYS_VENDOR, "Alienware"), 120 DMI_MATCH(DMI_PRODUCT_NAME, "Alienware m15 R7"), 121 }, 122 .driver_data = &generic_quirks, 123 }, 124 { 125 .ident = "Alienware m16 R1", 126 .matches = { 127 DMI_MATCH(DMI_SYS_VENDOR, "Alienware"), 128 DMI_MATCH(DMI_PRODUCT_NAME, "Alienware m16 R1"), 129 }, 130 .driver_data = &g_series_quirks, 131 }, 132 { 133 .ident = "Alienware m16 R1 AMD", 134 .matches = { 135 DMI_MATCH(DMI_SYS_VENDOR, "Alienware"), 136 DMI_MATCH(DMI_PRODUCT_NAME, "Alienware m16 R1 AMD"), 137 }, 138 .driver_data = &generic_quirks, 139 }, 140 { 141 .ident = "Alienware m16 R2", 142 .matches = { 143 DMI_MATCH(DMI_SYS_VENDOR, "Alienware"), 144 DMI_MATCH(DMI_PRODUCT_NAME, "Alienware m16 R2"), 145 }, 146 .driver_data = &generic_quirks, 147 }, 148 { 149 .ident = "Alienware m17 R5", 150 .matches = { 151 DMI_MATCH(DMI_SYS_VENDOR, "Alienware"), 152 DMI_MATCH(DMI_PRODUCT_NAME, "Alienware m17 R5 AMD"), 153 }, 154 .driver_data = &generic_quirks, 155 }, 156 { 157 .ident = "Alienware m18 R2", 158 .matches = { 159 DMI_MATCH(DMI_SYS_VENDOR, "Alienware"), 160 DMI_MATCH(DMI_PRODUCT_NAME, "Alienware m18 R2"), 161 }, 162 .driver_data = &generic_quirks, 163 }, 164 { 165 .ident = "Alienware x15 R1", 166 .matches = { 167 DMI_MATCH(DMI_SYS_VENDOR, "Alienware"), 168 DMI_MATCH(DMI_PRODUCT_NAME, "Alienware x15 R1"), 169 }, 170 .driver_data = &generic_quirks, 171 }, 172 { 173 .ident = "Alienware x15 R2", 174 .matches = { 175 DMI_MATCH(DMI_SYS_VENDOR, "Alienware"), 176 DMI_MATCH(DMI_PRODUCT_NAME, "Alienware x15 R2"), 177 }, 178 .driver_data = &generic_quirks, 179 }, 180 { 181 .ident = "Alienware x17 R2", 182 .matches = { 183 DMI_MATCH(DMI_SYS_VENDOR, "Alienware"), 184 DMI_MATCH(DMI_PRODUCT_NAME, "Alienware x17 R2"), 185 }, 186 .driver_data = &generic_quirks, 187 }, 188 { 189 .ident = "Dell Inc. G15 5510", 190 .matches = { 191 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 192 DMI_MATCH(DMI_PRODUCT_NAME, "Dell G15 5510"), 193 }, 194 .driver_data = &g_series_quirks, 195 }, 196 { 197 .ident = "Dell Inc. G15 5511", 198 .matches = { 199 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 200 DMI_MATCH(DMI_PRODUCT_NAME, "Dell G15 5511"), 201 }, 202 .driver_data = &g_series_quirks, 203 }, 204 { 205 .ident = "Dell Inc. G15 5515", 206 .matches = { 207 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 208 DMI_MATCH(DMI_PRODUCT_NAME, "Dell G15 5515"), 209 }, 210 .driver_data = &g_series_quirks, 211 }, 212 { 213 .ident = "Dell Inc. G16 7630", 214 .matches = { 215 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 216 DMI_MATCH(DMI_PRODUCT_NAME, "Dell G16 7630"), 217 }, 218 .driver_data = &g_series_quirks, 219 }, 220 { 221 .ident = "Dell Inc. G3 3500", 222 .matches = { 223 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 224 DMI_MATCH(DMI_PRODUCT_NAME, "G3 3500"), 225 }, 226 .driver_data = &g_series_quirks, 227 }, 228 { 229 .ident = "Dell Inc. G3 3590", 230 .matches = { 231 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 232 DMI_MATCH(DMI_PRODUCT_NAME, "G3 3590"), 233 }, 234 .driver_data = &g_series_quirks, 235 }, 236 { 237 .ident = "Dell Inc. G5 5500", 238 .matches = { 239 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 240 DMI_MATCH(DMI_PRODUCT_NAME, "G5 5500"), 241 }, 242 .driver_data = &g_series_quirks, 243 }, 244 { 245 .ident = "Dell Inc. G5 5505", 246 .matches = { 247 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 248 DMI_MATCH(DMI_PRODUCT_NAME, "G5 5505"), 249 }, 250 .driver_data = &g_series_quirks, 251 }, 252 {} 253 }; 254 255 enum AWCC_GET_FAN_SENSORS_OPERATIONS { 256 AWCC_OP_GET_TOTAL_FAN_TEMPS = 0x01, 257 AWCC_OP_GET_FAN_TEMP_ID = 0x02, 258 }; 259 260 enum AWCC_THERMAL_INFORMATION_OPERATIONS { 261 AWCC_OP_GET_SYSTEM_DESCRIPTION = 0x02, 262 AWCC_OP_GET_RESOURCE_ID = 0x03, 263 AWCC_OP_GET_TEMPERATURE = 0x04, 264 AWCC_OP_GET_FAN_RPM = 0x05, 265 AWCC_OP_GET_FAN_MIN_RPM = 0x08, 266 AWCC_OP_GET_FAN_MAX_RPM = 0x09, 267 AWCC_OP_GET_CURRENT_PROFILE = 0x0B, 268 AWCC_OP_GET_FAN_BOOST = 0x0C, 269 }; 270 271 enum AWCC_THERMAL_CONTROL_OPERATIONS { 272 AWCC_OP_ACTIVATE_PROFILE = 0x01, 273 AWCC_OP_SET_FAN_BOOST = 0x02, 274 }; 275 276 enum AWCC_GAME_SHIFT_STATUS_OPERATIONS { 277 AWCC_OP_TOGGLE_GAME_SHIFT = 0x01, 278 AWCC_OP_GET_GAME_SHIFT_STATUS = 0x02, 279 }; 280 281 enum AWCC_THERMAL_TABLES { 282 AWCC_THERMAL_TABLE_LEGACY = 0x9, 283 AWCC_THERMAL_TABLE_USTT = 0xA, 284 }; 285 286 enum AWCC_SPECIAL_THERMAL_CODES { 287 AWCC_SPECIAL_PROFILE_CUSTOM = 0x00, 288 AWCC_SPECIAL_PROFILE_GMODE = 0xAB, 289 }; 290 291 enum AWCC_TEMP_SENSOR_TYPES { 292 AWCC_TEMP_SENSOR_CPU = 0x01, 293 AWCC_TEMP_SENSOR_GPU = 0x06, 294 }; 295 296 enum awcc_thermal_profile { 297 AWCC_PROFILE_USTT_BALANCED, 298 AWCC_PROFILE_USTT_BALANCED_PERFORMANCE, 299 AWCC_PROFILE_USTT_COOL, 300 AWCC_PROFILE_USTT_QUIET, 301 AWCC_PROFILE_USTT_PERFORMANCE, 302 AWCC_PROFILE_USTT_LOW_POWER, 303 AWCC_PROFILE_LEGACY_QUIET, 304 AWCC_PROFILE_LEGACY_BALANCED, 305 AWCC_PROFILE_LEGACY_BALANCED_PERFORMANCE, 306 AWCC_PROFILE_LEGACY_PERFORMANCE, 307 AWCC_PROFILE_LAST, 308 }; 309 310 struct wmax_led_args { 311 u32 led_mask; 312 struct color_platform colors; 313 u8 state; 314 } __packed; 315 316 struct wmax_brightness_args { 317 u32 led_mask; 318 u32 percentage; 319 }; 320 321 struct wmax_basic_args { 322 u8 arg; 323 }; 324 325 struct wmax_u32_args { 326 u8 operation; 327 u8 arg1; 328 u8 arg2; 329 u8 arg3; 330 }; 331 332 struct awcc_fan_data { 333 unsigned long auto_channels_temp; 334 const char *label; 335 u32 min_rpm; 336 u32 max_rpm; 337 u8 suspend_cache; 338 u8 id; 339 }; 340 341 struct awcc_priv { 342 struct wmi_device *wdev; 343 union { 344 u32 system_description; 345 struct { 346 u8 fan_count; 347 u8 temp_count; 348 u8 unknown_count; 349 u8 profile_count; 350 }; 351 u8 res_count[4]; 352 }; 353 354 struct device *ppdev; 355 u8 supported_profiles[PLATFORM_PROFILE_LAST]; 356 357 struct device *hwdev; 358 struct awcc_fan_data **fan_data; 359 unsigned long temp_sensors[AWCC_ID_BITMAP_LONGS]; 360 361 u32 gpio_count; 362 }; 363 364 static const enum platform_profile_option awcc_mode_to_platform_profile[AWCC_PROFILE_LAST] = { 365 [AWCC_PROFILE_USTT_BALANCED] = PLATFORM_PROFILE_BALANCED, 366 [AWCC_PROFILE_USTT_BALANCED_PERFORMANCE] = PLATFORM_PROFILE_BALANCED_PERFORMANCE, 367 [AWCC_PROFILE_USTT_COOL] = PLATFORM_PROFILE_COOL, 368 [AWCC_PROFILE_USTT_QUIET] = PLATFORM_PROFILE_QUIET, 369 [AWCC_PROFILE_USTT_PERFORMANCE] = PLATFORM_PROFILE_PERFORMANCE, 370 [AWCC_PROFILE_USTT_LOW_POWER] = PLATFORM_PROFILE_LOW_POWER, 371 [AWCC_PROFILE_LEGACY_QUIET] = PLATFORM_PROFILE_QUIET, 372 [AWCC_PROFILE_LEGACY_BALANCED] = PLATFORM_PROFILE_BALANCED, 373 [AWCC_PROFILE_LEGACY_BALANCED_PERFORMANCE] = PLATFORM_PROFILE_BALANCED_PERFORMANCE, 374 [AWCC_PROFILE_LEGACY_PERFORMANCE] = PLATFORM_PROFILE_PERFORMANCE, 375 }; 376 377 static struct awcc_quirks *awcc; 378 379 /* 380 * The HDMI mux sysfs node indicates the status of the HDMI input mux. 381 * It can toggle between standard system GPU output and HDMI input. 382 */ 383 static ssize_t cable_show(struct device *dev, struct device_attribute *attr, 384 char *buf) 385 { 386 struct alienfx_platdata *pdata = dev_get_platdata(dev); 387 struct wmax_basic_args in_args = { 388 .arg = 0, 389 }; 390 u32 out_data; 391 int ret; 392 393 ret = alienware_wmi_command(pdata->wdev, WMAX_METHOD_HDMI_CABLE, 394 &in_args, sizeof(in_args), &out_data); 395 if (!ret) { 396 if (out_data == 0) 397 return sysfs_emit(buf, "[unconnected] connected unknown\n"); 398 else if (out_data == 1) 399 return sysfs_emit(buf, "unconnected [connected] unknown\n"); 400 } 401 402 pr_err("alienware-wmi: unknown HDMI cable status: %d\n", ret); 403 return sysfs_emit(buf, "unconnected connected [unknown]\n"); 404 } 405 406 static ssize_t source_show(struct device *dev, struct device_attribute *attr, 407 char *buf) 408 { 409 struct alienfx_platdata *pdata = dev_get_platdata(dev); 410 struct wmax_basic_args in_args = { 411 .arg = 0, 412 }; 413 u32 out_data; 414 int ret; 415 416 ret = alienware_wmi_command(pdata->wdev, WMAX_METHOD_HDMI_STATUS, 417 &in_args, sizeof(in_args), &out_data); 418 if (!ret) { 419 if (out_data == 1) 420 return sysfs_emit(buf, "[input] gpu unknown\n"); 421 else if (out_data == 2) 422 return sysfs_emit(buf, "input [gpu] unknown\n"); 423 } 424 425 pr_err("alienware-wmi: unknown HDMI source status: %u\n", ret); 426 return sysfs_emit(buf, "input gpu [unknown]\n"); 427 } 428 429 static ssize_t source_store(struct device *dev, struct device_attribute *attr, 430 const char *buf, size_t count) 431 { 432 struct alienfx_platdata *pdata = dev_get_platdata(dev); 433 struct wmax_basic_args args; 434 int ret; 435 436 if (strcmp(buf, "gpu\n") == 0) 437 args.arg = 1; 438 else if (strcmp(buf, "input\n") == 0) 439 args.arg = 2; 440 else 441 args.arg = 3; 442 pr_debug("alienware-wmi: setting hdmi to %d : %s", args.arg, buf); 443 444 ret = alienware_wmi_command(pdata->wdev, WMAX_METHOD_HDMI_SOURCE, &args, 445 sizeof(args), NULL); 446 if (ret < 0) 447 pr_err("alienware-wmi: HDMI toggle failed: results: %u\n", ret); 448 449 return count; 450 } 451 452 static DEVICE_ATTR_RO(cable); 453 static DEVICE_ATTR_RW(source); 454 455 static bool hdmi_group_visible(struct kobject *kobj) 456 { 457 return alienware_interface == WMAX && alienfx->hdmi_mux; 458 } 459 DEFINE_SIMPLE_SYSFS_GROUP_VISIBLE(hdmi); 460 461 static struct attribute *hdmi_attrs[] = { 462 &dev_attr_cable.attr, 463 &dev_attr_source.attr, 464 NULL, 465 }; 466 467 const struct attribute_group wmax_hdmi_attribute_group = { 468 .name = "hdmi", 469 .is_visible = SYSFS_GROUP_VISIBLE(hdmi), 470 .attrs = hdmi_attrs, 471 }; 472 473 /* 474 * Alienware GFX amplifier support 475 * - Currently supports reading cable status 476 * - Leaving expansion room to possibly support dock/undock events later 477 */ 478 static ssize_t status_show(struct device *dev, struct device_attribute *attr, 479 char *buf) 480 { 481 struct alienfx_platdata *pdata = dev_get_platdata(dev); 482 struct wmax_basic_args in_args = { 483 .arg = 0, 484 }; 485 u32 out_data; 486 int ret; 487 488 ret = alienware_wmi_command(pdata->wdev, WMAX_METHOD_AMPLIFIER_CABLE, 489 &in_args, sizeof(in_args), &out_data); 490 if (!ret) { 491 if (out_data == 0) 492 return sysfs_emit(buf, "[unconnected] connected unknown\n"); 493 else if (out_data == 1) 494 return sysfs_emit(buf, "unconnected [connected] unknown\n"); 495 } 496 497 pr_err("alienware-wmi: unknown amplifier cable status: %d\n", ret); 498 return sysfs_emit(buf, "unconnected connected [unknown]\n"); 499 } 500 501 static DEVICE_ATTR_RO(status); 502 503 static bool amplifier_group_visible(struct kobject *kobj) 504 { 505 return alienware_interface == WMAX && alienfx->amplifier; 506 } 507 DEFINE_SIMPLE_SYSFS_GROUP_VISIBLE(amplifier); 508 509 static struct attribute *amplifier_attrs[] = { 510 &dev_attr_status.attr, 511 NULL, 512 }; 513 514 const struct attribute_group wmax_amplifier_attribute_group = { 515 .name = "amplifier", 516 .is_visible = SYSFS_GROUP_VISIBLE(amplifier), 517 .attrs = amplifier_attrs, 518 }; 519 520 /* 521 * Deep Sleep Control support 522 * - Modifies BIOS setting for deep sleep control allowing extra wakeup events 523 */ 524 static ssize_t deepsleep_show(struct device *dev, struct device_attribute *attr, 525 char *buf) 526 { 527 struct alienfx_platdata *pdata = dev_get_platdata(dev); 528 struct wmax_basic_args in_args = { 529 .arg = 0, 530 }; 531 u32 out_data; 532 int ret; 533 534 ret = alienware_wmi_command(pdata->wdev, WMAX_METHOD_DEEP_SLEEP_STATUS, 535 &in_args, sizeof(in_args), &out_data); 536 if (!ret) { 537 if (out_data == 0) 538 return sysfs_emit(buf, "[disabled] s5 s5_s4\n"); 539 else if (out_data == 1) 540 return sysfs_emit(buf, "disabled [s5] s5_s4\n"); 541 else if (out_data == 2) 542 return sysfs_emit(buf, "disabled s5 [s5_s4]\n"); 543 } 544 545 pr_err("alienware-wmi: unknown deep sleep status: %d\n", ret); 546 return sysfs_emit(buf, "disabled s5 s5_s4 [unknown]\n"); 547 } 548 549 static ssize_t deepsleep_store(struct device *dev, struct device_attribute *attr, 550 const char *buf, size_t count) 551 { 552 struct alienfx_platdata *pdata = dev_get_platdata(dev); 553 struct wmax_basic_args args; 554 int ret; 555 556 if (strcmp(buf, "disabled\n") == 0) 557 args.arg = 0; 558 else if (strcmp(buf, "s5\n") == 0) 559 args.arg = 1; 560 else 561 args.arg = 2; 562 pr_debug("alienware-wmi: setting deep sleep to %d : %s", args.arg, buf); 563 564 ret = alienware_wmi_command(pdata->wdev, WMAX_METHOD_DEEP_SLEEP_CONTROL, 565 &args, sizeof(args), NULL); 566 if (!ret) 567 pr_err("alienware-wmi: deep sleep control failed: results: %u\n", ret); 568 569 return count; 570 } 571 572 static DEVICE_ATTR_RW(deepsleep); 573 574 static bool deepsleep_group_visible(struct kobject *kobj) 575 { 576 return alienware_interface == WMAX && alienfx->deepslp; 577 } 578 DEFINE_SIMPLE_SYSFS_GROUP_VISIBLE(deepsleep); 579 580 static struct attribute *deepsleep_attrs[] = { 581 &dev_attr_deepsleep.attr, 582 NULL, 583 }; 584 585 const struct attribute_group wmax_deepsleep_attribute_group = { 586 .name = "deepsleep", 587 .is_visible = SYSFS_GROUP_VISIBLE(deepsleep), 588 .attrs = deepsleep_attrs, 589 }; 590 591 /* 592 * AWCC Helpers 593 */ 594 static bool is_awcc_thermal_profile_id(u8 code) 595 { 596 u8 table = FIELD_GET(AWCC_THERMAL_TABLE_MASK, code); 597 u8 mode = FIELD_GET(AWCC_THERMAL_MODE_MASK, code); 598 599 if (mode >= AWCC_PROFILE_LAST) 600 return false; 601 602 if (table == AWCC_THERMAL_TABLE_LEGACY && mode >= AWCC_PROFILE_LEGACY_QUIET) 603 return true; 604 605 if (table == AWCC_THERMAL_TABLE_USTT && mode <= AWCC_PROFILE_USTT_LOW_POWER) 606 return true; 607 608 return false; 609 } 610 611 static int awcc_wmi_command(struct wmi_device *wdev, u32 method_id, 612 struct wmax_u32_args *args, u32 *out) 613 { 614 int ret; 615 616 ret = alienware_wmi_command(wdev, method_id, args, sizeof(*args), out); 617 if (ret) 618 return ret; 619 620 if (*out == AWCC_FAILURE_CODE || *out == AWCC_FAILURE_CODE_2) 621 return -EBADRQC; 622 623 return 0; 624 } 625 626 static int awcc_get_fan_sensors(struct wmi_device *wdev, u8 operation, 627 u8 fan_id, u8 index, u32 *out) 628 { 629 struct wmax_u32_args args = { 630 .operation = operation, 631 .arg1 = fan_id, 632 .arg2 = index, 633 .arg3 = 0, 634 }; 635 636 return awcc_wmi_command(wdev, AWCC_METHOD_GET_FAN_SENSORS, &args, out); 637 } 638 639 static int awcc_thermal_information(struct wmi_device *wdev, u8 operation, u8 arg, 640 u32 *out) 641 { 642 struct wmax_u32_args args = { 643 .operation = operation, 644 .arg1 = arg, 645 .arg2 = 0, 646 .arg3 = 0, 647 }; 648 649 return awcc_wmi_command(wdev, AWCC_METHOD_THERMAL_INFORMATION, &args, out); 650 } 651 652 static int awcc_fwup_gpio_control(struct wmi_device *wdev, u8 pin, u8 status) 653 { 654 struct wmax_u32_args args = { 655 .operation = pin, 656 .arg1 = status, 657 .arg2 = 0, 658 .arg3 = 0, 659 }; 660 u32 out; 661 662 return awcc_wmi_command(wdev, AWCC_METHOD_FWUP_GPIO_CONTROL, &args, &out); 663 } 664 665 static int awcc_read_total_gpios(struct wmi_device *wdev, u32 *count) 666 { 667 struct wmax_u32_args args = {}; 668 669 return awcc_wmi_command(wdev, AWCC_METHOD_READ_TOTAL_GPIOS, &args, count); 670 } 671 672 static int awcc_read_gpio_status(struct wmi_device *wdev, u8 pin, u32 *status) 673 { 674 struct wmax_u32_args args = { 675 .operation = pin, 676 .arg1 = 0, 677 .arg2 = 0, 678 .arg3 = 0, 679 }; 680 681 return awcc_wmi_command(wdev, AWCC_METHOD_READ_GPIO_STATUS, &args, status); 682 } 683 684 static int awcc_game_shift_status(struct wmi_device *wdev, u8 operation, 685 u32 *out) 686 { 687 struct wmax_u32_args args = { 688 .operation = operation, 689 .arg1 = 0, 690 .arg2 = 0, 691 .arg3 = 0, 692 }; 693 694 return awcc_wmi_command(wdev, AWCC_METHOD_GAME_SHIFT_STATUS, &args, out); 695 } 696 697 /** 698 * awcc_op_get_resource_id - Get the resource ID at a given index 699 * @wdev: AWCC WMI device 700 * @index: Index 701 * @out: Value returned by the WMI call 702 * 703 * Get the resource ID at a given @index. Resource IDs are listed in the 704 * following order: 705 * 706 * - Fan IDs 707 * - Sensor IDs 708 * - Unknown IDs 709 * - Thermal Profile IDs 710 * 711 * The total number of IDs of a given type can be obtained with 712 * AWCC_OP_GET_SYSTEM_DESCRIPTION. 713 * 714 * Return: 0 on success, -errno on failure 715 */ 716 static int awcc_op_get_resource_id(struct wmi_device *wdev, u8 index, u8 *out) 717 { 718 struct wmax_u32_args args = { 719 .operation = AWCC_OP_GET_RESOURCE_ID, 720 .arg1 = index, 721 .arg2 = 0, 722 .arg3 = 0, 723 }; 724 u32 out_data; 725 int ret; 726 727 ret = awcc_wmi_command(wdev, AWCC_METHOD_THERMAL_INFORMATION, &args, &out_data); 728 if (ret) 729 return ret; 730 731 *out = FIELD_GET(AWCC_RESOURCE_ID_MASK, out_data); 732 733 return 0; 734 } 735 736 static int awcc_op_get_fan_rpm(struct wmi_device *wdev, u8 fan_id, u32 *out) 737 { 738 struct wmax_u32_args args = { 739 .operation = AWCC_OP_GET_FAN_RPM, 740 .arg1 = fan_id, 741 .arg2 = 0, 742 .arg3 = 0, 743 }; 744 745 return awcc_wmi_command(wdev, AWCC_METHOD_THERMAL_INFORMATION, &args, out); 746 } 747 748 static int awcc_op_get_temperature(struct wmi_device *wdev, u8 temp_id, u32 *out) 749 { 750 struct wmax_u32_args args = { 751 .operation = AWCC_OP_GET_TEMPERATURE, 752 .arg1 = temp_id, 753 .arg2 = 0, 754 .arg3 = 0, 755 }; 756 757 return awcc_wmi_command(wdev, AWCC_METHOD_THERMAL_INFORMATION, &args, out); 758 } 759 760 static int awcc_op_get_fan_boost(struct wmi_device *wdev, u8 fan_id, u32 *out) 761 { 762 struct wmax_u32_args args = { 763 .operation = AWCC_OP_GET_FAN_BOOST, 764 .arg1 = fan_id, 765 .arg2 = 0, 766 .arg3 = 0, 767 }; 768 769 return awcc_wmi_command(wdev, AWCC_METHOD_THERMAL_INFORMATION, &args, out); 770 } 771 772 static int awcc_op_get_current_profile(struct wmi_device *wdev, u32 *out) 773 { 774 struct wmax_u32_args args = { 775 .operation = AWCC_OP_GET_CURRENT_PROFILE, 776 .arg1 = 0, 777 .arg2 = 0, 778 .arg3 = 0, 779 }; 780 781 return awcc_wmi_command(wdev, AWCC_METHOD_THERMAL_INFORMATION, &args, out); 782 } 783 784 static int awcc_op_activate_profile(struct wmi_device *wdev, u8 profile) 785 { 786 struct wmax_u32_args args = { 787 .operation = AWCC_OP_ACTIVATE_PROFILE, 788 .arg1 = profile, 789 .arg2 = 0, 790 .arg3 = 0, 791 }; 792 u32 out; 793 794 return awcc_wmi_command(wdev, AWCC_METHOD_THERMAL_CONTROL, &args, &out); 795 } 796 797 static int awcc_op_set_fan_boost(struct wmi_device *wdev, u8 fan_id, u8 boost) 798 { 799 struct wmax_u32_args args = { 800 .operation = AWCC_OP_SET_FAN_BOOST, 801 .arg1 = fan_id, 802 .arg2 = boost, 803 .arg3 = 0, 804 }; 805 u32 out; 806 807 return awcc_wmi_command(wdev, AWCC_METHOD_THERMAL_CONTROL, &args, &out); 808 } 809 810 /* 811 * HWMON 812 * - Provides temperature and fan speed monitoring as well as manual fan 813 * control 814 */ 815 static umode_t awcc_hwmon_is_visible(const void *drvdata, enum hwmon_sensor_types type, 816 u32 attr, int channel) 817 { 818 const struct awcc_priv *priv = drvdata; 819 unsigned int temp_count; 820 821 switch (type) { 822 case hwmon_temp: 823 temp_count = bitmap_weight(priv->temp_sensors, AWCC_ID_BITMAP_SIZE); 824 825 return channel < temp_count ? 0444 : 0; 826 case hwmon_fan: 827 return channel < priv->fan_count ? 0444 : 0; 828 case hwmon_pwm: 829 return channel < priv->fan_count ? 0444 : 0; 830 default: 831 return 0; 832 } 833 } 834 835 static int awcc_hwmon_read(struct device *dev, enum hwmon_sensor_types type, 836 u32 attr, int channel, long *val) 837 { 838 struct awcc_priv *priv = dev_get_drvdata(dev); 839 const struct awcc_fan_data *fan; 840 u32 state; 841 int ret; 842 u8 temp; 843 844 switch (type) { 845 case hwmon_temp: 846 temp = find_nth_bit(priv->temp_sensors, AWCC_ID_BITMAP_SIZE, channel); 847 848 switch (attr) { 849 case hwmon_temp_input: 850 ret = awcc_op_get_temperature(priv->wdev, temp, &state); 851 if (ret) 852 return ret; 853 854 *val = state * MILLIDEGREE_PER_DEGREE; 855 break; 856 default: 857 return -EOPNOTSUPP; 858 } 859 860 break; 861 case hwmon_fan: 862 fan = priv->fan_data[channel]; 863 864 switch (attr) { 865 case hwmon_fan_input: 866 ret = awcc_op_get_fan_rpm(priv->wdev, fan->id, &state); 867 if (ret) 868 return ret; 869 870 *val = state; 871 break; 872 case hwmon_fan_min: 873 *val = fan->min_rpm; 874 break; 875 case hwmon_fan_max: 876 *val = fan->max_rpm; 877 break; 878 default: 879 return -EOPNOTSUPP; 880 } 881 882 break; 883 case hwmon_pwm: 884 fan = priv->fan_data[channel]; 885 886 switch (attr) { 887 case hwmon_pwm_auto_channels_temp: 888 *val = fan->auto_channels_temp; 889 break; 890 default: 891 return -EOPNOTSUPP; 892 } 893 894 break; 895 default: 896 return -EOPNOTSUPP; 897 } 898 899 return 0; 900 } 901 902 static int awcc_hwmon_read_string(struct device *dev, enum hwmon_sensor_types type, 903 u32 attr, int channel, const char **str) 904 { 905 struct awcc_priv *priv = dev_get_drvdata(dev); 906 u8 temp; 907 908 switch (type) { 909 case hwmon_temp: 910 temp = find_nth_bit(priv->temp_sensors, AWCC_ID_BITMAP_SIZE, channel); 911 912 switch (temp) { 913 case AWCC_TEMP_SENSOR_CPU: 914 *str = "CPU"; 915 break; 916 case AWCC_TEMP_SENSOR_GPU: 917 *str = "GPU"; 918 break; 919 default: 920 *str = "Unknown"; 921 break; 922 } 923 924 break; 925 case hwmon_fan: 926 *str = priv->fan_data[channel]->label; 927 break; 928 default: 929 return -EOPNOTSUPP; 930 } 931 932 return 0; 933 } 934 935 static const struct hwmon_ops awcc_hwmon_ops = { 936 .is_visible = awcc_hwmon_is_visible, 937 .read = awcc_hwmon_read, 938 .read_string = awcc_hwmon_read_string, 939 }; 940 941 static const struct hwmon_channel_info * const awcc_hwmon_info[] = { 942 HWMON_CHANNEL_INFO(temp, 943 HWMON_T_LABEL | HWMON_T_INPUT, 944 HWMON_T_LABEL | HWMON_T_INPUT, 945 HWMON_T_LABEL | HWMON_T_INPUT, 946 HWMON_T_LABEL | HWMON_T_INPUT, 947 HWMON_T_LABEL | HWMON_T_INPUT, 948 HWMON_T_LABEL | HWMON_T_INPUT 949 ), 950 HWMON_CHANNEL_INFO(fan, 951 HWMON_F_LABEL | HWMON_F_INPUT | HWMON_F_MIN | HWMON_F_MAX, 952 HWMON_F_LABEL | HWMON_F_INPUT | HWMON_F_MIN | HWMON_F_MAX, 953 HWMON_F_LABEL | HWMON_F_INPUT | HWMON_F_MIN | HWMON_F_MAX, 954 HWMON_F_LABEL | HWMON_F_INPUT | HWMON_F_MIN | HWMON_F_MAX, 955 HWMON_F_LABEL | HWMON_F_INPUT | HWMON_F_MIN | HWMON_F_MAX, 956 HWMON_F_LABEL | HWMON_F_INPUT | HWMON_F_MIN | HWMON_F_MAX 957 ), 958 HWMON_CHANNEL_INFO(pwm, 959 HWMON_PWM_AUTO_CHANNELS_TEMP, 960 HWMON_PWM_AUTO_CHANNELS_TEMP, 961 HWMON_PWM_AUTO_CHANNELS_TEMP, 962 HWMON_PWM_AUTO_CHANNELS_TEMP, 963 HWMON_PWM_AUTO_CHANNELS_TEMP, 964 HWMON_PWM_AUTO_CHANNELS_TEMP 965 ), 966 NULL 967 }; 968 969 static const struct hwmon_chip_info awcc_hwmon_chip_info = { 970 .ops = &awcc_hwmon_ops, 971 .info = awcc_hwmon_info, 972 }; 973 974 static ssize_t fan_boost_show(struct device *dev, struct device_attribute *attr, 975 char *buf) 976 { 977 struct awcc_priv *priv = dev_get_drvdata(dev); 978 int index = to_sensor_dev_attr(attr)->index; 979 struct awcc_fan_data *fan = priv->fan_data[index]; 980 u32 boost; 981 int ret; 982 983 ret = awcc_op_get_fan_boost(priv->wdev, fan->id, &boost); 984 if (ret) 985 return ret; 986 987 return sysfs_emit(buf, "%u\n", boost); 988 } 989 990 static ssize_t fan_boost_store(struct device *dev, struct device_attribute *attr, 991 const char *buf, size_t count) 992 { 993 struct awcc_priv *priv = dev_get_drvdata(dev); 994 int index = to_sensor_dev_attr(attr)->index; 995 struct awcc_fan_data *fan = priv->fan_data[index]; 996 unsigned long val; 997 int ret; 998 999 ret = kstrtoul(buf, 0, &val); 1000 if (ret) 1001 return ret; 1002 1003 ret = awcc_op_set_fan_boost(priv->wdev, fan->id, clamp_val(val, 0, 255)); 1004 1005 return ret ? ret : count; 1006 } 1007 1008 static SENSOR_DEVICE_ATTR_RW(fan1_boost, fan_boost, 0); 1009 static SENSOR_DEVICE_ATTR_RW(fan2_boost, fan_boost, 1); 1010 static SENSOR_DEVICE_ATTR_RW(fan3_boost, fan_boost, 2); 1011 static SENSOR_DEVICE_ATTR_RW(fan4_boost, fan_boost, 3); 1012 static SENSOR_DEVICE_ATTR_RW(fan5_boost, fan_boost, 4); 1013 static SENSOR_DEVICE_ATTR_RW(fan6_boost, fan_boost, 5); 1014 1015 static umode_t fan_boost_attr_visible(struct kobject *kobj, struct attribute *attr, int n) 1016 { 1017 struct awcc_priv *priv = dev_get_drvdata(kobj_to_dev(kobj)); 1018 1019 return n < priv->fan_count ? attr->mode : 0; 1020 } 1021 1022 static bool fan_boost_group_visible(struct kobject *kobj) 1023 { 1024 return true; 1025 } 1026 1027 DEFINE_SYSFS_GROUP_VISIBLE(fan_boost); 1028 1029 static struct attribute *fan_boost_attrs[] = { 1030 &sensor_dev_attr_fan1_boost.dev_attr.attr, 1031 &sensor_dev_attr_fan2_boost.dev_attr.attr, 1032 &sensor_dev_attr_fan3_boost.dev_attr.attr, 1033 &sensor_dev_attr_fan4_boost.dev_attr.attr, 1034 &sensor_dev_attr_fan5_boost.dev_attr.attr, 1035 &sensor_dev_attr_fan6_boost.dev_attr.attr, 1036 NULL 1037 }; 1038 1039 static const struct attribute_group fan_boost_group = { 1040 .attrs = fan_boost_attrs, 1041 .is_visible = SYSFS_GROUP_VISIBLE(fan_boost), 1042 }; 1043 1044 static const struct attribute_group *awcc_hwmon_groups[] = { 1045 &fan_boost_group, 1046 NULL 1047 }; 1048 1049 static int awcc_hwmon_temps_init(struct wmi_device *wdev) 1050 { 1051 struct awcc_priv *priv = dev_get_drvdata(&wdev->dev); 1052 unsigned int i; 1053 int ret; 1054 u8 id; 1055 1056 for (i = 0; i < priv->temp_count; i++) { 1057 /* 1058 * Temperature sensors IDs are listed after the fan IDs at 1059 * offset `fan_count` 1060 */ 1061 ret = awcc_op_get_resource_id(wdev, i + priv->fan_count, &id); 1062 if (ret) 1063 return ret; 1064 1065 __set_bit(id, priv->temp_sensors); 1066 } 1067 1068 return 0; 1069 } 1070 1071 static char *awcc_get_fan_label(unsigned long *fan_temps) 1072 { 1073 unsigned int temp_count = bitmap_weight(fan_temps, AWCC_ID_BITMAP_SIZE); 1074 char *label; 1075 u8 temp_id; 1076 1077 switch (temp_count) { 1078 case 0: 1079 label = "Independent Fan"; 1080 break; 1081 case 1: 1082 temp_id = find_first_bit(fan_temps, AWCC_ID_BITMAP_SIZE); 1083 1084 switch (temp_id) { 1085 case AWCC_TEMP_SENSOR_CPU: 1086 label = "Processor Fan"; 1087 break; 1088 case AWCC_TEMP_SENSOR_GPU: 1089 label = "Video Fan"; 1090 break; 1091 default: 1092 label = "Unknown Fan"; 1093 break; 1094 } 1095 1096 break; 1097 default: 1098 label = "Shared Fan"; 1099 break; 1100 } 1101 1102 return label; 1103 } 1104 1105 static int awcc_hwmon_fans_init(struct wmi_device *wdev) 1106 { 1107 struct awcc_priv *priv = dev_get_drvdata(&wdev->dev); 1108 unsigned long fan_temps[AWCC_ID_BITMAP_LONGS]; 1109 unsigned long gather[AWCC_ID_BITMAP_LONGS]; 1110 u32 min_rpm, max_rpm, temp_count, temp_id; 1111 struct awcc_fan_data *fan_data; 1112 unsigned int i, j; 1113 int ret; 1114 u8 id; 1115 1116 for (i = 0; i < priv->fan_count; i++) { 1117 fan_data = devm_kzalloc(&wdev->dev, sizeof(*fan_data), GFP_KERNEL); 1118 if (!fan_data) 1119 return -ENOMEM; 1120 1121 /* 1122 * Fan IDs are listed first at offset 0 1123 */ 1124 ret = awcc_op_get_resource_id(wdev, i, &id); 1125 if (ret) 1126 return ret; 1127 1128 ret = awcc_thermal_information(wdev, AWCC_OP_GET_FAN_MIN_RPM, id, 1129 &min_rpm); 1130 if (ret) 1131 return ret; 1132 1133 ret = awcc_thermal_information(wdev, AWCC_OP_GET_FAN_MAX_RPM, id, 1134 &max_rpm); 1135 if (ret) 1136 return ret; 1137 1138 ret = awcc_get_fan_sensors(wdev, AWCC_OP_GET_TOTAL_FAN_TEMPS, id, 1139 0, &temp_count); 1140 if (ret) 1141 return ret; 1142 1143 bitmap_zero(fan_temps, AWCC_ID_BITMAP_SIZE); 1144 1145 for (j = 0; j < temp_count; j++) { 1146 ret = awcc_get_fan_sensors(wdev, AWCC_OP_GET_FAN_TEMP_ID, 1147 id, j, &temp_id); 1148 if (ret) 1149 break; 1150 1151 temp_id = FIELD_GET(AWCC_RESOURCE_ID_MASK, temp_id); 1152 __set_bit(temp_id, fan_temps); 1153 } 1154 1155 fan_data->id = id; 1156 fan_data->min_rpm = min_rpm; 1157 fan_data->max_rpm = max_rpm; 1158 fan_data->label = awcc_get_fan_label(fan_temps); 1159 bitmap_gather(gather, fan_temps, priv->temp_sensors, AWCC_ID_BITMAP_SIZE); 1160 bitmap_copy(&fan_data->auto_channels_temp, gather, BITS_PER_LONG); 1161 priv->fan_data[i] = fan_data; 1162 } 1163 1164 return 0; 1165 } 1166 1167 static int awcc_hwmon_init(struct wmi_device *wdev) 1168 { 1169 struct awcc_priv *priv = dev_get_drvdata(&wdev->dev); 1170 int ret; 1171 1172 priv->fan_data = devm_kcalloc(&wdev->dev, priv->fan_count, 1173 sizeof(*priv->fan_data), GFP_KERNEL); 1174 if (!priv->fan_data) 1175 return -ENOMEM; 1176 1177 ret = awcc_hwmon_temps_init(wdev); 1178 if (ret) 1179 return ret; 1180 1181 ret = awcc_hwmon_fans_init(wdev); 1182 if (ret) 1183 return ret; 1184 1185 priv->hwdev = devm_hwmon_device_register_with_info(&wdev->dev, "alienware_wmi", 1186 priv, &awcc_hwmon_chip_info, 1187 awcc_hwmon_groups); 1188 1189 return PTR_ERR_OR_ZERO(priv->hwdev); 1190 } 1191 1192 static void awcc_hwmon_suspend(struct device *dev) 1193 { 1194 struct awcc_priv *priv = dev_get_drvdata(dev); 1195 struct awcc_fan_data *fan; 1196 unsigned int i; 1197 u32 boost; 1198 int ret; 1199 1200 for (i = 0; i < priv->fan_count; i++) { 1201 fan = priv->fan_data[i]; 1202 1203 ret = awcc_thermal_information(priv->wdev, AWCC_OP_GET_FAN_BOOST, 1204 fan->id, &boost); 1205 if (ret) 1206 dev_err(dev, "Failed to store Fan %u boost while suspending\n", i); 1207 1208 fan->suspend_cache = ret ? 0 : clamp_val(boost, 0, 255); 1209 1210 awcc_op_set_fan_boost(priv->wdev, fan->id, 0); 1211 if (ret) 1212 dev_err(dev, "Failed to set Fan %u boost to 0 while suspending\n", i); 1213 } 1214 } 1215 1216 static void awcc_hwmon_resume(struct device *dev) 1217 { 1218 struct awcc_priv *priv = dev_get_drvdata(dev); 1219 struct awcc_fan_data *fan; 1220 unsigned int i; 1221 int ret; 1222 1223 for (i = 0; i < priv->fan_count; i++) { 1224 fan = priv->fan_data[i]; 1225 1226 if (!fan->suspend_cache) 1227 continue; 1228 1229 ret = awcc_op_set_fan_boost(priv->wdev, fan->id, fan->suspend_cache); 1230 if (ret) 1231 dev_err(dev, "Failed to restore Fan %u boost while resuming\n", i); 1232 } 1233 } 1234 1235 /* 1236 * Thermal Profile control 1237 * - Provides thermal profile control through the Platform Profile API 1238 */ 1239 static int awcc_platform_profile_get(struct device *dev, 1240 enum platform_profile_option *profile) 1241 { 1242 struct awcc_priv *priv = dev_get_drvdata(dev); 1243 u32 out_data; 1244 int ret; 1245 1246 ret = awcc_op_get_current_profile(priv->wdev, &out_data); 1247 if (ret) 1248 return ret; 1249 1250 switch (out_data) { 1251 case AWCC_SPECIAL_PROFILE_CUSTOM: 1252 *profile = PLATFORM_PROFILE_CUSTOM; 1253 return 0; 1254 case AWCC_SPECIAL_PROFILE_GMODE: 1255 *profile = PLATFORM_PROFILE_PERFORMANCE; 1256 return 0; 1257 default: 1258 break; 1259 } 1260 1261 if (!is_awcc_thermal_profile_id(out_data)) 1262 return -ENODATA; 1263 1264 out_data = FIELD_GET(AWCC_THERMAL_MODE_MASK, out_data); 1265 *profile = awcc_mode_to_platform_profile[out_data]; 1266 1267 return 0; 1268 } 1269 1270 static int awcc_platform_profile_set(struct device *dev, 1271 enum platform_profile_option profile) 1272 { 1273 struct awcc_priv *priv = dev_get_drvdata(dev); 1274 1275 if (awcc->gmode) { 1276 u32 gmode_status; 1277 int ret; 1278 1279 ret = awcc_game_shift_status(priv->wdev, 1280 AWCC_OP_GET_GAME_SHIFT_STATUS, 1281 &gmode_status); 1282 1283 if (ret < 0) 1284 return ret; 1285 1286 if ((profile == PLATFORM_PROFILE_PERFORMANCE && !gmode_status) || 1287 (profile != PLATFORM_PROFILE_PERFORMANCE && gmode_status)) { 1288 ret = awcc_game_shift_status(priv->wdev, 1289 AWCC_OP_TOGGLE_GAME_SHIFT, 1290 &gmode_status); 1291 1292 if (ret < 0) 1293 return ret; 1294 } 1295 } 1296 1297 return awcc_op_activate_profile(priv->wdev, priv->supported_profiles[profile]); 1298 } 1299 1300 static int awcc_platform_profile_probe(void *drvdata, unsigned long *choices) 1301 { 1302 enum platform_profile_option profile; 1303 struct awcc_priv *priv = drvdata; 1304 enum awcc_thermal_profile mode; 1305 u8 id, offset = 0; 1306 int ret; 1307 1308 /* 1309 * Thermal profile IDs are listed last at offset 1310 * fan_count + temp_count + unknown_count 1311 */ 1312 for (unsigned int i = 0; i < ARRAY_SIZE(priv->res_count) - 1; i++) 1313 offset += priv->res_count[i]; 1314 1315 for (unsigned int i = 0; i < priv->profile_count; i++) { 1316 ret = awcc_op_get_resource_id(priv->wdev, i + offset, &id); 1317 /* 1318 * Some devices report an incorrect number of thermal profiles 1319 * so the resource ID list may end prematurely 1320 */ 1321 if (ret == -EBADRQC) 1322 break; 1323 if (ret) 1324 return ret; 1325 1326 if (!is_awcc_thermal_profile_id(id)) { 1327 dev_dbg(&priv->wdev->dev, "Unmapped thermal profile ID 0x%02x\n", id); 1328 continue; 1329 } 1330 1331 mode = FIELD_GET(AWCC_THERMAL_MODE_MASK, id); 1332 profile = awcc_mode_to_platform_profile[mode]; 1333 priv->supported_profiles[profile] = id; 1334 1335 __set_bit(profile, choices); 1336 } 1337 1338 if (bitmap_empty(choices, PLATFORM_PROFILE_LAST)) 1339 return -ENODEV; 1340 1341 if (awcc->gmode) { 1342 priv->supported_profiles[PLATFORM_PROFILE_PERFORMANCE] = 1343 AWCC_SPECIAL_PROFILE_GMODE; 1344 1345 __set_bit(PLATFORM_PROFILE_PERFORMANCE, choices); 1346 } 1347 1348 /* Every model supports the "custom" profile */ 1349 priv->supported_profiles[PLATFORM_PROFILE_CUSTOM] = 1350 AWCC_SPECIAL_PROFILE_CUSTOM; 1351 1352 __set_bit(PLATFORM_PROFILE_CUSTOM, choices); 1353 1354 return 0; 1355 } 1356 1357 static const struct platform_profile_ops awcc_platform_profile_ops = { 1358 .probe = awcc_platform_profile_probe, 1359 .profile_get = awcc_platform_profile_get, 1360 .profile_set = awcc_platform_profile_set, 1361 }; 1362 1363 static int awcc_platform_profile_init(struct wmi_device *wdev) 1364 { 1365 struct awcc_priv *priv = dev_get_drvdata(&wdev->dev); 1366 1367 priv->ppdev = devm_platform_profile_register(&wdev->dev, "alienware-wmi", 1368 priv, &awcc_platform_profile_ops); 1369 1370 return PTR_ERR_OR_ZERO(priv->ppdev); 1371 } 1372 1373 /* 1374 * DebugFS 1375 */ 1376 static int awcc_debugfs_system_description_read(struct seq_file *seq, void *data) 1377 { 1378 struct device *dev = seq->private; 1379 struct awcc_priv *priv = dev_get_drvdata(dev); 1380 1381 seq_printf(seq, "0x%08x\n", priv->system_description); 1382 1383 return 0; 1384 } 1385 1386 static int awcc_debugfs_hwmon_data_read(struct seq_file *seq, void *data) 1387 { 1388 struct device *dev = seq->private; 1389 struct awcc_priv *priv = dev_get_drvdata(dev); 1390 const struct awcc_fan_data *fan; 1391 unsigned int bit; 1392 1393 seq_printf(seq, "Number of fans: %u\n", priv->fan_count); 1394 seq_printf(seq, "Number of temperature sensors: %u\n\n", priv->temp_count); 1395 1396 for (u32 i = 0; i < priv->fan_count; i++) { 1397 fan = priv->fan_data[i]; 1398 1399 seq_printf(seq, "Fan %u:\n", i); 1400 seq_printf(seq, " ID: 0x%02x\n", fan->id); 1401 seq_printf(seq, " Related temperature sensors bitmap: %lu\n", 1402 fan->auto_channels_temp); 1403 } 1404 1405 seq_puts(seq, "\nTemperature sensor IDs:\n"); 1406 for_each_set_bit(bit, priv->temp_sensors, AWCC_ID_BITMAP_SIZE) 1407 seq_printf(seq, " 0x%02x\n", bit); 1408 1409 return 0; 1410 } 1411 1412 static int awcc_debugfs_pprof_data_read(struct seq_file *seq, void *data) 1413 { 1414 struct device *dev = seq->private; 1415 struct awcc_priv *priv = dev_get_drvdata(dev); 1416 1417 seq_printf(seq, "Number of thermal profiles: %u\n\n", priv->profile_count); 1418 1419 for (u32 i = 0; i < PLATFORM_PROFILE_LAST; i++) { 1420 if (!priv->supported_profiles[i]) 1421 continue; 1422 1423 seq_printf(seq, "Platform profile %u:\n", i); 1424 seq_printf(seq, " ID: 0x%02x\n", priv->supported_profiles[i]); 1425 } 1426 1427 return 0; 1428 } 1429 1430 static int awcc_gpio_pin_show(struct seq_file *seq, void *data) 1431 { 1432 unsigned long pin = debugfs_get_aux_num(seq->file); 1433 struct wmi_device *wdev = seq->private; 1434 u32 status; 1435 int ret; 1436 1437 ret = awcc_read_gpio_status(wdev, pin, &status); 1438 if (ret) 1439 return ret; 1440 1441 seq_printf(seq, "%u\n", status); 1442 1443 return 0; 1444 } 1445 1446 static ssize_t awcc_gpio_pin_write(struct file *file, const char __user *buf, 1447 size_t count, loff_t *ppos) 1448 { 1449 unsigned long pin = debugfs_get_aux_num(file); 1450 struct seq_file *seq = file->private_data; 1451 struct wmi_device *wdev = seq->private; 1452 bool status; 1453 int ret; 1454 1455 if (!ppos || *ppos) 1456 return -EINVAL; 1457 1458 ret = kstrtobool_from_user(buf, count, &status); 1459 if (ret) 1460 return ret; 1461 1462 ret = awcc_fwup_gpio_control(wdev, pin, status); 1463 if (ret) 1464 return ret; 1465 1466 return count; 1467 } 1468 1469 DEFINE_SHOW_STORE_ATTRIBUTE(awcc_gpio_pin); 1470 1471 static void awcc_debugfs_remove(void *data) 1472 { 1473 struct dentry *root = data; 1474 1475 debugfs_remove(root); 1476 } 1477 1478 static void awcc_debugfs_init(struct wmi_device *wdev) 1479 { 1480 struct awcc_priv *priv = dev_get_drvdata(&wdev->dev); 1481 struct dentry *root, *gpio_ctl; 1482 u32 gpio_count; 1483 char name[64]; 1484 int ret; 1485 1486 scnprintf(name, sizeof(name), "%s-%s", "alienware-wmi", dev_name(&wdev->dev)); 1487 root = debugfs_create_dir(name, NULL); 1488 1489 debugfs_create_devm_seqfile(&wdev->dev, "system_description", root, 1490 awcc_debugfs_system_description_read); 1491 1492 if (awcc->hwmon) 1493 debugfs_create_devm_seqfile(&wdev->dev, "hwmon_data", root, 1494 awcc_debugfs_hwmon_data_read); 1495 1496 if (awcc->pprof) 1497 debugfs_create_devm_seqfile(&wdev->dev, "pprof_data", root, 1498 awcc_debugfs_pprof_data_read); 1499 1500 ret = awcc_read_total_gpios(wdev, &gpio_count); 1501 if (ret) { 1502 dev_dbg(&wdev->dev, "Failed to get total GPIO Pin count\n"); 1503 goto out_add_action; 1504 } else if (gpio_count > AWCC_MAX_RES_COUNT) { 1505 dev_dbg(&wdev->dev, "Reported GPIO Pin count may be incorrect: %u\n", gpio_count); 1506 goto out_add_action; 1507 } 1508 1509 gpio_ctl = debugfs_create_dir("gpio_ctl", root); 1510 1511 priv->gpio_count = gpio_count; 1512 debugfs_create_u32("total_gpios", 0444, gpio_ctl, &priv->gpio_count); 1513 1514 for (unsigned int i = 0; i < gpio_count; i++) { 1515 scnprintf(name, sizeof(name), "pin%u", i); 1516 debugfs_create_file_aux_num(name, 0644, gpio_ctl, wdev, i, 1517 &awcc_gpio_pin_fops); 1518 } 1519 1520 out_add_action: 1521 devm_add_action_or_reset(&wdev->dev, awcc_debugfs_remove, root); 1522 } 1523 1524 static int alienware_awcc_setup(struct wmi_device *wdev) 1525 { 1526 struct awcc_priv *priv; 1527 int ret; 1528 1529 priv = devm_kzalloc(&wdev->dev, sizeof(*priv), GFP_KERNEL); 1530 if (!priv) 1531 return -ENOMEM; 1532 1533 ret = awcc_thermal_information(wdev, AWCC_OP_GET_SYSTEM_DESCRIPTION, 1534 0, &priv->system_description); 1535 if (ret < 0) 1536 return ret; 1537 1538 /* Sanity check */ 1539 for (unsigned int i = 0; i < ARRAY_SIZE(priv->res_count); i++) { 1540 if (priv->res_count[i] > AWCC_MAX_RES_COUNT) { 1541 dev_err(&wdev->dev, "Malformed system description: 0x%08x\n", 1542 priv->system_description); 1543 return -ENXIO; 1544 } 1545 } 1546 1547 priv->wdev = wdev; 1548 dev_set_drvdata(&wdev->dev, priv); 1549 1550 if (awcc->hwmon) { 1551 ret = awcc_hwmon_init(wdev); 1552 if (ret) 1553 return ret; 1554 } 1555 1556 if (awcc->pprof) { 1557 ret = awcc_platform_profile_init(wdev); 1558 if (ret) 1559 return ret; 1560 } 1561 1562 awcc_debugfs_init(wdev); 1563 1564 return 0; 1565 } 1566 1567 /* 1568 * WMAX WMI driver 1569 */ 1570 static int wmax_wmi_update_led(struct alienfx_priv *priv, 1571 struct wmi_device *wdev, u8 location) 1572 { 1573 struct wmax_led_args in_args = { 1574 .led_mask = 1 << location, 1575 .colors = priv->colors[location], 1576 .state = priv->lighting_control_state, 1577 }; 1578 1579 return alienware_wmi_command(wdev, WMAX_METHOD_ZONE_CONTROL, &in_args, 1580 sizeof(in_args), NULL); 1581 } 1582 1583 static int wmax_wmi_update_brightness(struct alienfx_priv *priv, 1584 struct wmi_device *wdev, u8 brightness) 1585 { 1586 struct wmax_brightness_args in_args = { 1587 .led_mask = 0xFF, 1588 .percentage = brightness, 1589 }; 1590 1591 return alienware_wmi_command(wdev, WMAX_METHOD_BRIGHTNESS, &in_args, 1592 sizeof(in_args), NULL); 1593 } 1594 1595 static int wmax_wmi_probe(struct wmi_device *wdev, const void *context) 1596 { 1597 struct alienfx_platdata pdata = { 1598 .wdev = wdev, 1599 .ops = { 1600 .upd_led = wmax_wmi_update_led, 1601 .upd_brightness = wmax_wmi_update_brightness, 1602 }, 1603 }; 1604 int ret; 1605 1606 if (awcc) 1607 ret = alienware_awcc_setup(wdev); 1608 else 1609 ret = alienware_alienfx_setup(&pdata); 1610 1611 return ret; 1612 } 1613 1614 static int wmax_wmi_suspend(struct device *dev) 1615 { 1616 if (awcc->hwmon) 1617 awcc_hwmon_suspend(dev); 1618 1619 return 0; 1620 } 1621 1622 static int wmax_wmi_resume(struct device *dev) 1623 { 1624 if (awcc->hwmon) 1625 awcc_hwmon_resume(dev); 1626 1627 return 0; 1628 } 1629 1630 static DEFINE_SIMPLE_DEV_PM_OPS(wmax_wmi_pm_ops, wmax_wmi_suspend, wmax_wmi_resume); 1631 1632 static const struct wmi_device_id alienware_wmax_device_id_table[] = { 1633 { WMAX_CONTROL_GUID, NULL }, 1634 { }, 1635 }; 1636 MODULE_DEVICE_TABLE(wmi, alienware_wmax_device_id_table); 1637 1638 static struct wmi_driver alienware_wmax_wmi_driver = { 1639 .driver = { 1640 .name = "alienware-wmi-wmax", 1641 .probe_type = PROBE_PREFER_ASYNCHRONOUS, 1642 .pm = pm_sleep_ptr(&wmax_wmi_pm_ops), 1643 }, 1644 .id_table = alienware_wmax_device_id_table, 1645 .probe = wmax_wmi_probe, 1646 .no_singleton = true, 1647 }; 1648 1649 int __init alienware_wmax_wmi_init(void) 1650 { 1651 const struct dmi_system_id *id; 1652 1653 id = dmi_first_match(awcc_dmi_table); 1654 if (id) 1655 awcc = id->driver_data; 1656 1657 if (force_hwmon) { 1658 if (!awcc) 1659 awcc = &empty_quirks; 1660 1661 awcc->hwmon = true; 1662 } 1663 1664 if (force_platform_profile) { 1665 if (!awcc) 1666 awcc = &empty_quirks; 1667 1668 awcc->pprof = true; 1669 } 1670 1671 if (force_gmode) { 1672 if (awcc) 1673 awcc->gmode = true; 1674 else 1675 pr_warn("force_gmode requires platform profile support\n"); 1676 } 1677 1678 return wmi_driver_register(&alienware_wmax_wmi_driver); 1679 } 1680 1681 void __exit alienware_wmax_wmi_exit(void) 1682 { 1683 wmi_driver_unregister(&alienware_wmax_wmi_driver); 1684 } 1685