1/*-*-linux-c-*-*/ 2 3/* 4 Copyright (C) 2007,2008 Jonathan Woithe <jwoithe@just42.net> 5 Copyright (C) 2008 Peter Gruber <nokos@gmx.net> 6 Copyright (C) 2008 Tony Vroon <tony@linx.net> 7 Based on earlier work: 8 Copyright (C) 2003 Shane Spencer <shane@bogomip.com> 9 Adrian Yee <brewt-fujitsu@brewt.org> 10 11 Templated from msi-laptop.c and thinkpad_acpi.c which is copyright 12 by its respective authors. 13 14 This program is free software; you can redistribute it and/or modify 15 it under the terms of the GNU General Public License as published by 16 the Free Software Foundation; either version 2 of the License, or 17 (at your option) any later version. 18 19 This program is distributed in the hope that it will be useful, but 20 WITHOUT ANY WARRANTY; without even the implied warranty of 21 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 22 General Public License for more details. 23 24 You should have received a copy of the GNU General Public License 25 along with this program; if not, write to the Free Software 26 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 27 02110-1301, USA. 28 */ 29 30/* 31 * fujitsu-laptop.c - Fujitsu laptop support, providing access to additional 32 * features made available on a range of Fujitsu laptops including the 33 * P2xxx/P5xxx/S6xxx/S7xxx series. 34 * 35 * This driver exports a few files in /sys/devices/platform/fujitsu-laptop/; 36 * others may be added at a later date. 37 * 38 * lcd_level - Screen brightness: contains a single integer in the 39 * range 0..7. (rw) 40 * 41 * In addition to these platform device attributes the driver 42 * registers itself in the Linux backlight control subsystem and is 43 * available to userspace under /sys/class/backlight/fujitsu-laptop/. 44 * 45 * Hotkeys present on certain Fujitsu laptops (eg: the S6xxx series) are 46 * also supported by this driver. 47 * 48 * This driver has been tested on a Fujitsu Lifebook S6410, S7020 and 49 * P8010. It should work on most P-series and S-series Lifebooks, but 50 * YMMV. 51 * 52 * The module parameter use_alt_lcd_levels switches between different ACPI 53 * brightness controls which are used by different Fujitsu laptops. In most 54 * cases the correct method is automatically detected. "use_alt_lcd_levels=1" 55 * is applicable for a Fujitsu Lifebook S6410 if autodetection fails. 56 * 57 */ 58 59#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 60 61#include <linux/module.h> 62#include <linux/kernel.h> 63#include <linux/init.h> 64#include <linux/acpi.h> 65#include <linux/dmi.h> 66#include <linux/backlight.h> 67#include <linux/fb.h> 68#include <linux/input.h> 69#include <linux/kfifo.h> 70#include <linux/platform_device.h> 71#include <linux/slab.h> 72#if defined(CONFIG_LEDS_CLASS) || defined(CONFIG_LEDS_CLASS_MODULE) 73#include <linux/leds.h> 74#endif 75 76#define FUJITSU_DRIVER_VERSION "0.6.0" 77 78#define FUJITSU_LCD_N_LEVELS 8 79 80#define ACPI_FUJITSU_CLASS "fujitsu" 81#define ACPI_FUJITSU_HID "FUJ02B1" 82#define ACPI_FUJITSU_DRIVER_NAME "Fujitsu laptop FUJ02B1 ACPI brightness driver" 83#define ACPI_FUJITSU_DEVICE_NAME "Fujitsu FUJ02B1" 84#define ACPI_FUJITSU_HOTKEY_HID "FUJ02E3" 85#define ACPI_FUJITSU_HOTKEY_DRIVER_NAME "Fujitsu laptop FUJ02E3 ACPI hotkeys driver" 86#define ACPI_FUJITSU_HOTKEY_DEVICE_NAME "Fujitsu FUJ02E3" 87 88#define ACPI_FUJITSU_NOTIFY_CODE1 0x80 89 90#define ACPI_VIDEO_NOTIFY_INC_BRIGHTNESS 0x86 91#define ACPI_VIDEO_NOTIFY_DEC_BRIGHTNESS 0x87 92 93/* FUNC interface - command values */ 94#define FUNC_RFKILL 0x1000 95#define FUNC_LEDS 0x1001 96#define FUNC_BUTTONS 0x1002 97#define FUNC_BACKLIGHT 0x1004 98 99/* FUNC interface - responses */ 100#define UNSUPPORTED_CMD 0x80000000 101 102#if defined(CONFIG_LEDS_CLASS) || defined(CONFIG_LEDS_CLASS_MODULE) 103/* FUNC interface - LED control */ 104#define FUNC_LED_OFF 0x1 105#define FUNC_LED_ON 0x30001 106#define KEYBOARD_LAMPS 0x100 107#define LOGOLAMP_POWERON 0x2000 108#define LOGOLAMP_ALWAYS 0x4000 109#endif 110 111/* Hotkey details */ 112#define KEY1_CODE 0x410 /* codes for the keys in the GIRB register */ 113#define KEY2_CODE 0x411 114#define KEY3_CODE 0x412 115#define KEY4_CODE 0x413 116 117#define MAX_HOTKEY_RINGBUFFER_SIZE 100 118#define RINGBUFFERSIZE 40 119 120/* Debugging */ 121#define FUJLAPTOP_LOG ACPI_FUJITSU_HID ": " 122#define FUJLAPTOP_ERR KERN_ERR FUJLAPTOP_LOG 123#define FUJLAPTOP_NOTICE KERN_NOTICE FUJLAPTOP_LOG 124#define FUJLAPTOP_INFO KERN_INFO FUJLAPTOP_LOG 125#define FUJLAPTOP_DEBUG KERN_DEBUG FUJLAPTOP_LOG 126 127#define FUJLAPTOP_DBG_ALL 0xffff 128#define FUJLAPTOP_DBG_ERROR 0x0001 129#define FUJLAPTOP_DBG_WARN 0x0002 130#define FUJLAPTOP_DBG_INFO 0x0004 131#define FUJLAPTOP_DBG_TRACE 0x0008 132 133#ifdef CONFIG_FUJITSU_LAPTOP_DEBUG 134#define vdbg_printk(a_dbg_level, format, arg...) \ 135 do { if (dbg_level & a_dbg_level) \ 136 printk(FUJLAPTOP_DEBUG "%s: " format, __func__ , ## arg); \ 137 } while (0) 138#else 139#define vdbg_printk(a_dbg_level, format, arg...) \ 140 do { } while (0) 141#endif 142 143/* Device controlling the backlight and associated keys */ 144struct fujitsu_t { 145 acpi_handle acpi_handle; 146 struct acpi_device *dev; 147 struct input_dev *input; 148 char phys[32]; 149 struct backlight_device *bl_device; 150 struct platform_device *pf_device; 151 int keycode1, keycode2, keycode3, keycode4; 152 153 unsigned int max_brightness; 154 unsigned int brightness_changed; 155 unsigned int brightness_level; 156}; 157 158static struct fujitsu_t *fujitsu; 159static int use_alt_lcd_levels = -1; 160static int disable_brightness_adjust = -1; 161 162/* Device used to access other hotkeys on the laptop */ 163struct fujitsu_hotkey_t { 164 acpi_handle acpi_handle; 165 struct acpi_device *dev; 166 struct input_dev *input; 167 char phys[32]; 168 struct platform_device *pf_device; 169 struct kfifo fifo; 170 spinlock_t fifo_lock; 171 int rfkill_supported; 172 int rfkill_state; 173 int logolamp_registered; 174 int kblamps_registered; 175}; 176 177static struct fujitsu_hotkey_t *fujitsu_hotkey; 178 179static void acpi_fujitsu_hotkey_notify(struct acpi_device *device, u32 event); 180 181#if defined(CONFIG_LEDS_CLASS) || defined(CONFIG_LEDS_CLASS_MODULE) 182static enum led_brightness logolamp_get(struct led_classdev *cdev); 183static void logolamp_set(struct led_classdev *cdev, 184 enum led_brightness brightness); 185 186static struct led_classdev logolamp_led = { 187 .name = "fujitsu::logolamp", 188 .brightness_get = logolamp_get, 189 .brightness_set = logolamp_set 190}; 191 192static enum led_brightness kblamps_get(struct led_classdev *cdev); 193static void kblamps_set(struct led_classdev *cdev, 194 enum led_brightness brightness); 195 196static struct led_classdev kblamps_led = { 197 .name = "fujitsu::kblamps", 198 .brightness_get = kblamps_get, 199 .brightness_set = kblamps_set 200}; 201#endif 202 203#ifdef CONFIG_FUJITSU_LAPTOP_DEBUG 204static u32 dbg_level = 0x03; 205#endif 206 207static void acpi_fujitsu_notify(struct acpi_device *device, u32 event); 208 209/* Fujitsu ACPI interface function */ 210 211static int call_fext_func(int cmd, int arg0, int arg1, int arg2) 212{ 213 acpi_status status = AE_OK; 214 union acpi_object params[4] = { 215 { .type = ACPI_TYPE_INTEGER }, 216 { .type = ACPI_TYPE_INTEGER }, 217 { .type = ACPI_TYPE_INTEGER }, 218 { .type = ACPI_TYPE_INTEGER } 219 }; 220 struct acpi_object_list arg_list = { 4, ¶ms[0] }; 221 unsigned long long value; 222 acpi_handle handle = NULL; 223 224 status = acpi_get_handle(fujitsu_hotkey->acpi_handle, "FUNC", &handle); 225 if (ACPI_FAILURE(status)) { 226 vdbg_printk(FUJLAPTOP_DBG_ERROR, 227 "FUNC interface is not present\n"); 228 return -ENODEV; 229 } 230 231 params[0].integer.value = cmd; 232 params[1].integer.value = arg0; 233 params[2].integer.value = arg1; 234 params[3].integer.value = arg2; 235 236 status = acpi_evaluate_integer(handle, NULL, &arg_list, &value); 237 if (ACPI_FAILURE(status)) { 238 vdbg_printk(FUJLAPTOP_DBG_WARN, 239 "FUNC 0x%x (args 0x%x, 0x%x, 0x%x) call failed\n", 240 cmd, arg0, arg1, arg2); 241 return -ENODEV; 242 } 243 244 vdbg_printk(FUJLAPTOP_DBG_TRACE, 245 "FUNC 0x%x (args 0x%x, 0x%x, 0x%x) returned 0x%x\n", 246 cmd, arg0, arg1, arg2, (int)value); 247 return value; 248} 249 250#if defined(CONFIG_LEDS_CLASS) || defined(CONFIG_LEDS_CLASS_MODULE) 251/* LED class callbacks */ 252 253static void logolamp_set(struct led_classdev *cdev, 254 enum led_brightness brightness) 255{ 256 if (brightness >= LED_FULL) { 257 call_fext_func(FUNC_LEDS, 0x1, LOGOLAMP_POWERON, FUNC_LED_ON); 258 call_fext_func(FUNC_LEDS, 0x1, LOGOLAMP_ALWAYS, FUNC_LED_ON); 259 } else if (brightness >= LED_HALF) { 260 call_fext_func(FUNC_LEDS, 0x1, LOGOLAMP_POWERON, FUNC_LED_ON); 261 call_fext_func(FUNC_LEDS, 0x1, LOGOLAMP_ALWAYS, FUNC_LED_OFF); 262 } else { 263 call_fext_func(FUNC_LEDS, 0x1, LOGOLAMP_POWERON, FUNC_LED_OFF); 264 } 265} 266 267static void kblamps_set(struct led_classdev *cdev, 268 enum led_brightness brightness) 269{ 270 if (brightness >= LED_FULL) 271 call_fext_func(FUNC_LEDS, 0x1, KEYBOARD_LAMPS, FUNC_LED_ON); 272 else 273 call_fext_func(FUNC_LEDS, 0x1, KEYBOARD_LAMPS, FUNC_LED_OFF); 274} 275 276static enum led_brightness logolamp_get(struct led_classdev *cdev) 277{ 278 enum led_brightness brightness = LED_OFF; 279 int poweron, always; 280 281 poweron = call_fext_func(FUNC_LEDS, 0x2, LOGOLAMP_POWERON, 0x0); 282 if (poweron == FUNC_LED_ON) { 283 brightness = LED_HALF; 284 always = call_fext_func(FUNC_LEDS, 0x2, LOGOLAMP_ALWAYS, 0x0); 285 if (always == FUNC_LED_ON) 286 brightness = LED_FULL; 287 } 288 return brightness; 289} 290 291static enum led_brightness kblamps_get(struct led_classdev *cdev) 292{ 293 enum led_brightness brightness = LED_OFF; 294 295 if (call_fext_func(FUNC_LEDS, 0x2, KEYBOARD_LAMPS, 0x0) == FUNC_LED_ON) 296 brightness = LED_FULL; 297 298 return brightness; 299} 300#endif 301 302/* Hardware access for LCD brightness control */ 303 304static int set_lcd_level(int level) 305{ 306 acpi_status status = AE_OK; 307 acpi_handle handle = NULL; 308 309 vdbg_printk(FUJLAPTOP_DBG_TRACE, "set lcd level via SBLL [%d]\n", 310 level); 311 312 if (level < 0 || level >= fujitsu->max_brightness) 313 return -EINVAL; 314 315 status = acpi_get_handle(fujitsu->acpi_handle, "SBLL", &handle); 316 if (ACPI_FAILURE(status)) { 317 vdbg_printk(FUJLAPTOP_DBG_ERROR, "SBLL not present\n"); 318 return -ENODEV; 319 } 320 321 322 status = acpi_execute_simple_method(handle, NULL, level); 323 if (ACPI_FAILURE(status)) 324 return -ENODEV; 325 326 return 0; 327} 328 329static int set_lcd_level_alt(int level) 330{ 331 acpi_status status = AE_OK; 332 acpi_handle handle = NULL; 333 334 vdbg_printk(FUJLAPTOP_DBG_TRACE, "set lcd level via SBL2 [%d]\n", 335 level); 336 337 if (level < 0 || level >= fujitsu->max_brightness) 338 return -EINVAL; 339 340 status = acpi_get_handle(fujitsu->acpi_handle, "SBL2", &handle); 341 if (ACPI_FAILURE(status)) { 342 vdbg_printk(FUJLAPTOP_DBG_ERROR, "SBL2 not present\n"); 343 return -ENODEV; 344 } 345 346 status = acpi_execute_simple_method(handle, NULL, level); 347 if (ACPI_FAILURE(status)) 348 return -ENODEV; 349 350 return 0; 351} 352 353static int get_lcd_level(void) 354{ 355 unsigned long long state = 0; 356 acpi_status status = AE_OK; 357 358 vdbg_printk(FUJLAPTOP_DBG_TRACE, "get lcd level via GBLL\n"); 359 360 status = 361 acpi_evaluate_integer(fujitsu->acpi_handle, "GBLL", NULL, &state); 362 if (ACPI_FAILURE(status)) 363 return 0; 364 365 fujitsu->brightness_level = state & 0x0fffffff; 366 367 if (state & 0x80000000) 368 fujitsu->brightness_changed = 1; 369 else 370 fujitsu->brightness_changed = 0; 371 372 return fujitsu->brightness_level; 373} 374 375static int get_max_brightness(void) 376{ 377 unsigned long long state = 0; 378 acpi_status status = AE_OK; 379 380 vdbg_printk(FUJLAPTOP_DBG_TRACE, "get max lcd level via RBLL\n"); 381 382 status = 383 acpi_evaluate_integer(fujitsu->acpi_handle, "RBLL", NULL, &state); 384 if (ACPI_FAILURE(status)) 385 return -1; 386 387 fujitsu->max_brightness = state; 388 389 return fujitsu->max_brightness; 390} 391 392/* Backlight device stuff */ 393 394static int bl_get_brightness(struct backlight_device *b) 395{ 396 return get_lcd_level(); 397} 398 399static int bl_update_status(struct backlight_device *b) 400{ 401 int ret; 402 if (b->props.power == FB_BLANK_POWERDOWN) 403 ret = call_fext_func(FUNC_BACKLIGHT, 0x1, 0x4, 0x3); 404 else 405 ret = call_fext_func(FUNC_BACKLIGHT, 0x1, 0x4, 0x0); 406 if (ret != 0) 407 vdbg_printk(FUJLAPTOP_DBG_ERROR, 408 "Unable to adjust backlight power, error code %i\n", 409 ret); 410 411 if (use_alt_lcd_levels) 412 ret = set_lcd_level_alt(b->props.brightness); 413 else 414 ret = set_lcd_level(b->props.brightness); 415 if (ret != 0) 416 vdbg_printk(FUJLAPTOP_DBG_ERROR, 417 "Unable to adjust LCD brightness, error code %i\n", 418 ret); 419 return ret; 420} 421 422static const struct backlight_ops fujitsubl_ops = { 423 .get_brightness = bl_get_brightness, 424 .update_status = bl_update_status, 425}; 426 427/* Platform LCD brightness device */ 428 429static ssize_t 430show_max_brightness(struct device *dev, 431 struct device_attribute *attr, char *buf) 432{ 433 434 int ret; 435 436 ret = get_max_brightness(); 437 if (ret < 0) 438 return ret; 439 440 return sprintf(buf, "%i\n", ret); 441} 442 443static ssize_t 444show_brightness_changed(struct device *dev, 445 struct device_attribute *attr, char *buf) 446{ 447 448 int ret; 449 450 ret = fujitsu->brightness_changed; 451 if (ret < 0) 452 return ret; 453 454 return sprintf(buf, "%i\n", ret); 455} 456 457static ssize_t show_lcd_level(struct device *dev, 458 struct device_attribute *attr, char *buf) 459{ 460 461 int ret; 462 463 ret = get_lcd_level(); 464 if (ret < 0) 465 return ret; 466 467 return sprintf(buf, "%i\n", ret); 468} 469 470static ssize_t store_lcd_level(struct device *dev, 471 struct device_attribute *attr, const char *buf, 472 size_t count) 473{ 474 475 int level, ret; 476 477 if (sscanf(buf, "%i", &level) != 1 478 || (level < 0 || level >= fujitsu->max_brightness)) 479 return -EINVAL; 480 481 if (use_alt_lcd_levels) 482 ret = set_lcd_level_alt(level); 483 else 484 ret = set_lcd_level(level); 485 if (ret < 0) 486 return ret; 487 488 ret = get_lcd_level(); 489 if (ret < 0) 490 return ret; 491 492 return count; 493} 494 495static ssize_t 496ignore_store(struct device *dev, 497 struct device_attribute *attr, const char *buf, size_t count) 498{ 499 return count; 500} 501 502static ssize_t 503show_lid_state(struct device *dev, 504 struct device_attribute *attr, char *buf) 505{ 506 if (!(fujitsu_hotkey->rfkill_supported & 0x100)) 507 return sprintf(buf, "unknown\n"); 508 if (fujitsu_hotkey->rfkill_state & 0x100) 509 return sprintf(buf, "open\n"); 510 else 511 return sprintf(buf, "closed\n"); 512} 513 514static ssize_t 515show_dock_state(struct device *dev, 516 struct device_attribute *attr, char *buf) 517{ 518 if (!(fujitsu_hotkey->rfkill_supported & 0x200)) 519 return sprintf(buf, "unknown\n"); 520 if (fujitsu_hotkey->rfkill_state & 0x200) 521 return sprintf(buf, "docked\n"); 522 else 523 return sprintf(buf, "undocked\n"); 524} 525 526static ssize_t 527show_radios_state(struct device *dev, 528 struct device_attribute *attr, char *buf) 529{ 530 if (!(fujitsu_hotkey->rfkill_supported & 0x20)) 531 return sprintf(buf, "unknown\n"); 532 if (fujitsu_hotkey->rfkill_state & 0x20) 533 return sprintf(buf, "on\n"); 534 else 535 return sprintf(buf, "killed\n"); 536} 537 538static DEVICE_ATTR(max_brightness, 0444, show_max_brightness, ignore_store); 539static DEVICE_ATTR(brightness_changed, 0444, show_brightness_changed, 540 ignore_store); 541static DEVICE_ATTR(lcd_level, 0644, show_lcd_level, store_lcd_level); 542static DEVICE_ATTR(lid, 0444, show_lid_state, ignore_store); 543static DEVICE_ATTR(dock, 0444, show_dock_state, ignore_store); 544static DEVICE_ATTR(radios, 0444, show_radios_state, ignore_store); 545 546static struct attribute *fujitsupf_attributes[] = { 547 &dev_attr_brightness_changed.attr, 548 &dev_attr_max_brightness.attr, 549 &dev_attr_lcd_level.attr, 550 &dev_attr_lid.attr, 551 &dev_attr_dock.attr, 552 &dev_attr_radios.attr, 553 NULL 554}; 555 556static struct attribute_group fujitsupf_attribute_group = { 557 .attrs = fujitsupf_attributes 558}; 559 560static struct platform_driver fujitsupf_driver = { 561 .driver = { 562 .name = "fujitsu-laptop", 563 } 564}; 565 566static void __init dmi_check_cb_common(const struct dmi_system_id *id) 567{ 568 pr_info("Identified laptop model '%s'\n", id->ident); 569 if (use_alt_lcd_levels == -1) { 570 if (acpi_has_method(NULL, 571 "\\_SB.PCI0.LPCB.FJEX.SBL2")) 572 use_alt_lcd_levels = 1; 573 else 574 use_alt_lcd_levels = 0; 575 vdbg_printk(FUJLAPTOP_DBG_TRACE, "auto-detected usealt as " 576 "%i\n", use_alt_lcd_levels); 577 } 578} 579 580static int __init dmi_check_cb_s6410(const struct dmi_system_id *id) 581{ 582 dmi_check_cb_common(id); 583 fujitsu->keycode1 = KEY_SCREENLOCK; /* "Lock" */ 584 fujitsu->keycode2 = KEY_HELP; /* "Mobility Center" */ 585 return 1; 586} 587 588static int __init dmi_check_cb_s6420(const struct dmi_system_id *id) 589{ 590 dmi_check_cb_common(id); 591 fujitsu->keycode1 = KEY_SCREENLOCK; /* "Lock" */ 592 fujitsu->keycode2 = KEY_HELP; /* "Mobility Center" */ 593 return 1; 594} 595 596static int __init dmi_check_cb_p8010(const struct dmi_system_id *id) 597{ 598 dmi_check_cb_common(id); 599 fujitsu->keycode1 = KEY_HELP; /* "Support" */ 600 fujitsu->keycode3 = KEY_SWITCHVIDEOMODE; /* "Presentation" */ 601 fujitsu->keycode4 = KEY_WWW; /* "Internet" */ 602 return 1; 603} 604 605static const struct dmi_system_id fujitsu_dmi_table[] __initconst = { 606 { 607 .ident = "Fujitsu Siemens S6410", 608 .matches = { 609 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"), 610 DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK S6410"), 611 }, 612 .callback = dmi_check_cb_s6410}, 613 { 614 .ident = "Fujitsu Siemens S6420", 615 .matches = { 616 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"), 617 DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK S6420"), 618 }, 619 .callback = dmi_check_cb_s6420}, 620 { 621 .ident = "Fujitsu LifeBook P8010", 622 .matches = { 623 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"), 624 DMI_MATCH(DMI_PRODUCT_NAME, "LifeBook P8010"), 625 }, 626 .callback = dmi_check_cb_p8010}, 627 {} 628}; 629 630/* ACPI device for LCD brightness control */ 631 632static int acpi_fujitsu_add(struct acpi_device *device) 633{ 634 int state = 0; 635 struct input_dev *input; 636 int error; 637 638 if (!device) 639 return -EINVAL; 640 641 fujitsu->acpi_handle = device->handle; 642 sprintf(acpi_device_name(device), "%s", ACPI_FUJITSU_DEVICE_NAME); 643 sprintf(acpi_device_class(device), "%s", ACPI_FUJITSU_CLASS); 644 device->driver_data = fujitsu; 645 646 fujitsu->input = input = input_allocate_device(); 647 if (!input) { 648 error = -ENOMEM; 649 goto err_stop; 650 } 651 652 snprintf(fujitsu->phys, sizeof(fujitsu->phys), 653 "%s/video/input0", acpi_device_hid(device)); 654 655 input->name = acpi_device_name(device); 656 input->phys = fujitsu->phys; 657 input->id.bustype = BUS_HOST; 658 input->id.product = 0x06; 659 input->dev.parent = &device->dev; 660 input->evbit[0] = BIT(EV_KEY); 661 set_bit(KEY_BRIGHTNESSUP, input->keybit); 662 set_bit(KEY_BRIGHTNESSDOWN, input->keybit); 663 set_bit(KEY_UNKNOWN, input->keybit); 664 665 error = input_register_device(input); 666 if (error) 667 goto err_free_input_dev; 668 669 error = acpi_bus_update_power(fujitsu->acpi_handle, &state); 670 if (error) { 671 pr_err("Error reading power state\n"); 672 goto err_unregister_input_dev; 673 } 674 675 pr_info("ACPI: %s [%s] (%s)\n", 676 acpi_device_name(device), acpi_device_bid(device), 677 !device->power.state ? "on" : "off"); 678 679 fujitsu->dev = device; 680 681 if (acpi_has_method(device->handle, METHOD_NAME__INI)) { 682 vdbg_printk(FUJLAPTOP_DBG_INFO, "Invoking _INI\n"); 683 if (ACPI_FAILURE 684 (acpi_evaluate_object 685 (device->handle, METHOD_NAME__INI, NULL, NULL))) 686 pr_err("_INI Method failed\n"); 687 } 688 689 /* do config (detect defaults) */ 690 use_alt_lcd_levels = use_alt_lcd_levels == 1 ? 1 : 0; 691 disable_brightness_adjust = disable_brightness_adjust == 1 ? 1 : 0; 692 vdbg_printk(FUJLAPTOP_DBG_INFO, 693 "config: [alt interface: %d], [adjust disable: %d]\n", 694 use_alt_lcd_levels, disable_brightness_adjust); 695 696 if (get_max_brightness() <= 0) 697 fujitsu->max_brightness = FUJITSU_LCD_N_LEVELS; 698 get_lcd_level(); 699 700 return 0; 701 702err_unregister_input_dev: 703 input_unregister_device(input); 704 input = NULL; 705err_free_input_dev: 706 input_free_device(input); 707err_stop: 708 return error; 709} 710 711static int acpi_fujitsu_remove(struct acpi_device *device) 712{ 713 struct fujitsu_t *fujitsu = acpi_driver_data(device); 714 struct input_dev *input = fujitsu->input; 715 716 input_unregister_device(input); 717 718 fujitsu->acpi_handle = NULL; 719 720 return 0; 721} 722 723/* Brightness notify */ 724 725static void acpi_fujitsu_notify(struct acpi_device *device, u32 event) 726{ 727 struct input_dev *input; 728 int keycode; 729 int oldb, newb; 730 731 input = fujitsu->input; 732 733 switch (event) { 734 case ACPI_FUJITSU_NOTIFY_CODE1: 735 keycode = 0; 736 oldb = fujitsu->brightness_level; 737 get_lcd_level(); 738 newb = fujitsu->brightness_level; 739 740 vdbg_printk(FUJLAPTOP_DBG_TRACE, 741 "brightness button event [%i -> %i (%i)]\n", 742 oldb, newb, fujitsu->brightness_changed); 743 744 if (oldb < newb) { 745 if (disable_brightness_adjust != 1) { 746 if (use_alt_lcd_levels) 747 set_lcd_level_alt(newb); 748 else 749 set_lcd_level(newb); 750 } 751 keycode = KEY_BRIGHTNESSUP; 752 } else if (oldb > newb) { 753 if (disable_brightness_adjust != 1) { 754 if (use_alt_lcd_levels) 755 set_lcd_level_alt(newb); 756 else 757 set_lcd_level(newb); 758 } 759 keycode = KEY_BRIGHTNESSDOWN; 760 } 761 break; 762 default: 763 keycode = KEY_UNKNOWN; 764 vdbg_printk(FUJLAPTOP_DBG_WARN, 765 "unsupported event [0x%x]\n", event); 766 break; 767 } 768 769 if (keycode != 0) { 770 input_report_key(input, keycode, 1); 771 input_sync(input); 772 input_report_key(input, keycode, 0); 773 input_sync(input); 774 } 775} 776 777/* ACPI device for hotkey handling */ 778 779static int acpi_fujitsu_hotkey_add(struct acpi_device *device) 780{ 781 int result = 0; 782 int state = 0; 783 struct input_dev *input; 784 int error; 785 int i; 786 787 if (!device) 788 return -EINVAL; 789 790 fujitsu_hotkey->acpi_handle = device->handle; 791 sprintf(acpi_device_name(device), "%s", 792 ACPI_FUJITSU_HOTKEY_DEVICE_NAME); 793 sprintf(acpi_device_class(device), "%s", ACPI_FUJITSU_CLASS); 794 device->driver_data = fujitsu_hotkey; 795 796 /* kfifo */ 797 spin_lock_init(&fujitsu_hotkey->fifo_lock); 798 error = kfifo_alloc(&fujitsu_hotkey->fifo, RINGBUFFERSIZE * sizeof(int), 799 GFP_KERNEL); 800 if (error) { 801 pr_err("kfifo_alloc failed\n"); 802 goto err_stop; 803 } 804 805 fujitsu_hotkey->input = input = input_allocate_device(); 806 if (!input) { 807 error = -ENOMEM; 808 goto err_free_fifo; 809 } 810 811 snprintf(fujitsu_hotkey->phys, sizeof(fujitsu_hotkey->phys), 812 "%s/video/input0", acpi_device_hid(device)); 813 814 input->name = acpi_device_name(device); 815 input->phys = fujitsu_hotkey->phys; 816 input->id.bustype = BUS_HOST; 817 input->id.product = 0x06; 818 input->dev.parent = &device->dev; 819 820 set_bit(EV_KEY, input->evbit); 821 set_bit(fujitsu->keycode1, input->keybit); 822 set_bit(fujitsu->keycode2, input->keybit); 823 set_bit(fujitsu->keycode3, input->keybit); 824 set_bit(fujitsu->keycode4, input->keybit); 825 set_bit(KEY_UNKNOWN, input->keybit); 826 827 error = input_register_device(input); 828 if (error) 829 goto err_free_input_dev; 830 831 error = acpi_bus_update_power(fujitsu_hotkey->acpi_handle, &state); 832 if (error) { 833 pr_err("Error reading power state\n"); 834 goto err_unregister_input_dev; 835 } 836 837 pr_info("ACPI: %s [%s] (%s)\n", 838 acpi_device_name(device), acpi_device_bid(device), 839 !device->power.state ? "on" : "off"); 840 841 fujitsu_hotkey->dev = device; 842 843 if (acpi_has_method(device->handle, METHOD_NAME__INI)) { 844 vdbg_printk(FUJLAPTOP_DBG_INFO, "Invoking _INI\n"); 845 if (ACPI_FAILURE 846 (acpi_evaluate_object 847 (device->handle, METHOD_NAME__INI, NULL, NULL))) 848 pr_err("_INI Method failed\n"); 849 } 850 851 i = 0; 852 while (call_fext_func(FUNC_BUTTONS, 0x1, 0x0, 0x0) != 0 853 && (i++) < MAX_HOTKEY_RINGBUFFER_SIZE) 854 ; /* No action, result is discarded */ 855 vdbg_printk(FUJLAPTOP_DBG_INFO, "Discarded %i ringbuffer entries\n", i); 856 857 fujitsu_hotkey->rfkill_supported = 858 call_fext_func(FUNC_RFKILL, 0x0, 0x0, 0x0); 859 860 /* Make sure our bitmask of supported functions is cleared if the 861 RFKILL function block is not implemented, like on the S7020. */ 862 if (fujitsu_hotkey->rfkill_supported == UNSUPPORTED_CMD) 863 fujitsu_hotkey->rfkill_supported = 0; 864 865 if (fujitsu_hotkey->rfkill_supported) 866 fujitsu_hotkey->rfkill_state = 867 call_fext_func(FUNC_RFKILL, 0x4, 0x0, 0x0); 868 869 /* Suspect this is a keymap of the application panel, print it */ 870 pr_info("BTNI: [0x%x]\n", call_fext_func(FUNC_BUTTONS, 0x0, 0x0, 0x0)); 871 872#if defined(CONFIG_LEDS_CLASS) || defined(CONFIG_LEDS_CLASS_MODULE) 873 if (call_fext_func(FUNC_LEDS, 0x0, 0x0, 0x0) & LOGOLAMP_POWERON) { 874 result = led_classdev_register(&fujitsu->pf_device->dev, 875 &logolamp_led); 876 if (result == 0) { 877 fujitsu_hotkey->logolamp_registered = 1; 878 } else { 879 pr_err("Could not register LED handler for logo lamp, error %i\n", 880 result); 881 } 882 } 883 884 if ((call_fext_func(FUNC_LEDS, 0x0, 0x0, 0x0) & KEYBOARD_LAMPS) && 885 (call_fext_func(FUNC_BUTTONS, 0x0, 0x0, 0x0) == 0x0)) { 886 result = led_classdev_register(&fujitsu->pf_device->dev, 887 &kblamps_led); 888 if (result == 0) { 889 fujitsu_hotkey->kblamps_registered = 1; 890 } else { 891 pr_err("Could not register LED handler for keyboard lamps, error %i\n", 892 result); 893 } 894 } 895#endif 896 897 return result; 898 899err_unregister_input_dev: 900 input_unregister_device(input); 901 input = NULL; 902err_free_input_dev: 903 input_free_device(input); 904err_free_fifo: 905 kfifo_free(&fujitsu_hotkey->fifo); 906err_stop: 907 return error; 908} 909 910static int acpi_fujitsu_hotkey_remove(struct acpi_device *device) 911{ 912 struct fujitsu_hotkey_t *fujitsu_hotkey = acpi_driver_data(device); 913 struct input_dev *input = fujitsu_hotkey->input; 914 915#if defined(CONFIG_LEDS_CLASS) || defined(CONFIG_LEDS_CLASS_MODULE) 916 if (fujitsu_hotkey->logolamp_registered) 917 led_classdev_unregister(&logolamp_led); 918 919 if (fujitsu_hotkey->kblamps_registered) 920 led_classdev_unregister(&kblamps_led); 921#endif 922 923 input_unregister_device(input); 924 925 kfifo_free(&fujitsu_hotkey->fifo); 926 927 fujitsu_hotkey->acpi_handle = NULL; 928 929 return 0; 930} 931 932static void acpi_fujitsu_hotkey_notify(struct acpi_device *device, u32 event) 933{ 934 struct input_dev *input; 935 int keycode, keycode_r; 936 unsigned int irb = 1; 937 int i, status; 938 939 input = fujitsu_hotkey->input; 940 941 if (fujitsu_hotkey->rfkill_supported) 942 fujitsu_hotkey->rfkill_state = 943 call_fext_func(FUNC_RFKILL, 0x4, 0x0, 0x0); 944 945 switch (event) { 946 case ACPI_FUJITSU_NOTIFY_CODE1: 947 i = 0; 948 while ((irb = 949 call_fext_func(FUNC_BUTTONS, 0x1, 0x0, 0x0)) != 0 950 && (i++) < MAX_HOTKEY_RINGBUFFER_SIZE) { 951 switch (irb & 0x4ff) { 952 case KEY1_CODE: 953 keycode = fujitsu->keycode1; 954 break; 955 case KEY2_CODE: 956 keycode = fujitsu->keycode2; 957 break; 958 case KEY3_CODE: 959 keycode = fujitsu->keycode3; 960 break; 961 case KEY4_CODE: 962 keycode = fujitsu->keycode4; 963 break; 964 case 0: 965 keycode = 0; 966 break; 967 default: 968 vdbg_printk(FUJLAPTOP_DBG_WARN, 969 "Unknown GIRB result [%x]\n", irb); 970 keycode = -1; 971 break; 972 } 973 if (keycode > 0) { 974 vdbg_printk(FUJLAPTOP_DBG_TRACE, 975 "Push keycode into ringbuffer [%d]\n", 976 keycode); 977 status = kfifo_in_locked(&fujitsu_hotkey->fifo, 978 (unsigned char *)&keycode, 979 sizeof(keycode), 980 &fujitsu_hotkey->fifo_lock); 981 if (status != sizeof(keycode)) { 982 vdbg_printk(FUJLAPTOP_DBG_WARN, 983 "Could not push keycode [0x%x]\n", 984 keycode); 985 } else { 986 input_report_key(input, keycode, 1); 987 input_sync(input); 988 } 989 } else if (keycode == 0) { 990 while ((status = 991 kfifo_out_locked( 992 &fujitsu_hotkey->fifo, 993 (unsigned char *) &keycode_r, 994 sizeof(keycode_r), 995 &fujitsu_hotkey->fifo_lock)) 996 == sizeof(keycode_r)) { 997 input_report_key(input, keycode_r, 0); 998 input_sync(input); 999 vdbg_printk(FUJLAPTOP_DBG_TRACE, 1000 "Pop keycode from ringbuffer [%d]\n", 1001 keycode_r); 1002 } 1003 } 1004 } 1005 1006 break; 1007 default: 1008 keycode = KEY_UNKNOWN; 1009 vdbg_printk(FUJLAPTOP_DBG_WARN, 1010 "Unsupported event [0x%x]\n", event); 1011 input_report_key(input, keycode, 1); 1012 input_sync(input); 1013 input_report_key(input, keycode, 0); 1014 input_sync(input); 1015 break; 1016 } 1017} 1018 1019/* Initialization */ 1020 1021static const struct acpi_device_id fujitsu_device_ids[] = { 1022 {ACPI_FUJITSU_HID, 0}, 1023 {"", 0}, 1024}; 1025 1026static struct acpi_driver acpi_fujitsu_driver = { 1027 .name = ACPI_FUJITSU_DRIVER_NAME, 1028 .class = ACPI_FUJITSU_CLASS, 1029 .ids = fujitsu_device_ids, 1030 .ops = { 1031 .add = acpi_fujitsu_add, 1032 .remove = acpi_fujitsu_remove, 1033 .notify = acpi_fujitsu_notify, 1034 }, 1035}; 1036 1037static const struct acpi_device_id fujitsu_hotkey_device_ids[] = { 1038 {ACPI_FUJITSU_HOTKEY_HID, 0}, 1039 {"", 0}, 1040}; 1041 1042static struct acpi_driver acpi_fujitsu_hotkey_driver = { 1043 .name = ACPI_FUJITSU_HOTKEY_DRIVER_NAME, 1044 .class = ACPI_FUJITSU_CLASS, 1045 .ids = fujitsu_hotkey_device_ids, 1046 .ops = { 1047 .add = acpi_fujitsu_hotkey_add, 1048 .remove = acpi_fujitsu_hotkey_remove, 1049 .notify = acpi_fujitsu_hotkey_notify, 1050 }, 1051}; 1052 1053static const struct acpi_device_id fujitsu_ids[] __used = { 1054 {ACPI_FUJITSU_HID, 0}, 1055 {ACPI_FUJITSU_HOTKEY_HID, 0}, 1056 {"", 0} 1057}; 1058MODULE_DEVICE_TABLE(acpi, fujitsu_ids); 1059 1060static int __init fujitsu_init(void) 1061{ 1062 int ret, result, max_brightness; 1063 1064 if (acpi_disabled) 1065 return -ENODEV; 1066 1067 fujitsu = kzalloc(sizeof(struct fujitsu_t), GFP_KERNEL); 1068 if (!fujitsu) 1069 return -ENOMEM; 1070 fujitsu->keycode1 = KEY_PROG1; 1071 fujitsu->keycode2 = KEY_PROG2; 1072 fujitsu->keycode3 = KEY_PROG3; 1073 fujitsu->keycode4 = KEY_PROG4; 1074 dmi_check_system(fujitsu_dmi_table); 1075 1076 result = acpi_bus_register_driver(&acpi_fujitsu_driver); 1077 if (result < 0) { 1078 ret = -ENODEV; 1079 goto fail_acpi; 1080 } 1081 1082 /* Register platform stuff */ 1083 1084 fujitsu->pf_device = platform_device_alloc("fujitsu-laptop", -1); 1085 if (!fujitsu->pf_device) { 1086 ret = -ENOMEM; 1087 goto fail_platform_driver; 1088 } 1089 1090 ret = platform_device_add(fujitsu->pf_device); 1091 if (ret) 1092 goto fail_platform_device1; 1093 1094 ret = 1095 sysfs_create_group(&fujitsu->pf_device->dev.kobj, 1096 &fujitsupf_attribute_group); 1097 if (ret) 1098 goto fail_platform_device2; 1099 1100 /* Register backlight stuff */ 1101 1102 if (!acpi_video_backlight_support()) { 1103 struct backlight_properties props; 1104 1105 memset(&props, 0, sizeof(struct backlight_properties)); 1106 max_brightness = fujitsu->max_brightness; 1107 props.type = BACKLIGHT_PLATFORM; 1108 props.max_brightness = max_brightness - 1; 1109 fujitsu->bl_device = backlight_device_register("fujitsu-laptop", 1110 NULL, NULL, 1111 &fujitsubl_ops, 1112 &props); 1113 if (IS_ERR(fujitsu->bl_device)) { 1114 ret = PTR_ERR(fujitsu->bl_device); 1115 fujitsu->bl_device = NULL; 1116 goto fail_sysfs_group; 1117 } 1118 fujitsu->bl_device->props.brightness = fujitsu->brightness_level; 1119 } 1120 1121 ret = platform_driver_register(&fujitsupf_driver); 1122 if (ret) 1123 goto fail_backlight; 1124 1125 /* Register hotkey driver */ 1126 1127 fujitsu_hotkey = kzalloc(sizeof(struct fujitsu_hotkey_t), GFP_KERNEL); 1128 if (!fujitsu_hotkey) { 1129 ret = -ENOMEM; 1130 goto fail_hotkey; 1131 } 1132 1133 result = acpi_bus_register_driver(&acpi_fujitsu_hotkey_driver); 1134 if (result < 0) { 1135 ret = -ENODEV; 1136 goto fail_hotkey1; 1137 } 1138 1139 /* Sync backlight power status (needs FUJ02E3 device, hence deferred) */ 1140 1141 if (!acpi_video_backlight_support()) { 1142 if (call_fext_func(FUNC_BACKLIGHT, 0x2, 0x4, 0x0) == 3) 1143 fujitsu->bl_device->props.power = FB_BLANK_POWERDOWN; 1144 else 1145 fujitsu->bl_device->props.power = FB_BLANK_UNBLANK; 1146 } 1147 1148 pr_info("driver " FUJITSU_DRIVER_VERSION " successfully loaded\n"); 1149 1150 return 0; 1151 1152fail_hotkey1: 1153 kfree(fujitsu_hotkey); 1154fail_hotkey: 1155 platform_driver_unregister(&fujitsupf_driver); 1156fail_backlight: 1157 backlight_device_unregister(fujitsu->bl_device); 1158fail_sysfs_group: 1159 sysfs_remove_group(&fujitsu->pf_device->dev.kobj, 1160 &fujitsupf_attribute_group); 1161fail_platform_device2: 1162 platform_device_del(fujitsu->pf_device); 1163fail_platform_device1: 1164 platform_device_put(fujitsu->pf_device); 1165fail_platform_driver: 1166 acpi_bus_unregister_driver(&acpi_fujitsu_driver); 1167fail_acpi: 1168 kfree(fujitsu); 1169 1170 return ret; 1171} 1172 1173static void __exit fujitsu_cleanup(void) 1174{ 1175 acpi_bus_unregister_driver(&acpi_fujitsu_hotkey_driver); 1176 1177 kfree(fujitsu_hotkey); 1178 1179 platform_driver_unregister(&fujitsupf_driver); 1180 1181 backlight_device_unregister(fujitsu->bl_device); 1182 1183 sysfs_remove_group(&fujitsu->pf_device->dev.kobj, 1184 &fujitsupf_attribute_group); 1185 1186 platform_device_unregister(fujitsu->pf_device); 1187 1188 acpi_bus_unregister_driver(&acpi_fujitsu_driver); 1189 1190 kfree(fujitsu); 1191 1192 pr_info("driver unloaded\n"); 1193} 1194 1195module_init(fujitsu_init); 1196module_exit(fujitsu_cleanup); 1197 1198module_param(use_alt_lcd_levels, uint, 0644); 1199MODULE_PARM_DESC(use_alt_lcd_levels, 1200 "Use alternative interface for lcd_levels (needed for Lifebook s6410)."); 1201module_param(disable_brightness_adjust, uint, 0644); 1202MODULE_PARM_DESC(disable_brightness_adjust, "Disable brightness adjustment ."); 1203#ifdef CONFIG_FUJITSU_LAPTOP_DEBUG 1204module_param_named(debug, dbg_level, uint, 0644); 1205MODULE_PARM_DESC(debug, "Sets debug level bit-mask"); 1206#endif 1207 1208MODULE_AUTHOR("Jonathan Woithe, Peter Gruber, Tony Vroon"); 1209MODULE_DESCRIPTION("Fujitsu laptop extras support"); 1210MODULE_VERSION(FUJITSU_DRIVER_VERSION); 1211MODULE_LICENSE("GPL"); 1212 1213MODULE_ALIAS("dmi:*:svnFUJITSUSIEMENS:*:pvr:rvnFUJITSU:rnFJNB1D3:*:cvrS6410:*"); 1214MODULE_ALIAS("dmi:*:svnFUJITSUSIEMENS:*:pvr:rvnFUJITSU:rnFJNB1E6:*:cvrS6420:*"); 1215MODULE_ALIAS("dmi:*:svnFUJITSU:*:pvr:rvnFUJITSU:rnFJNB19C:*:cvrS7020:*"); 1216