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