/*-*-linux-c-*-*/ /* Copyright (C) 2007,2008 Jonathan Woithe Copyright (C) 2008 Peter Gruber Copyright (C) 2008 Tony Vroon Based on earlier work: Copyright (C) 2003 Shane Spencer Adrian Yee Templated from msi-laptop.c and thinkpad_acpi.c which is copyright by its respective authors. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ /* * fujitsu-laptop.c - Fujitsu laptop support, providing access to additional * features made available on a range of Fujitsu laptops including the * P2xxx/P5xxx/S6xxx/S7xxx series. * * This driver implements a vendor-specific backlight control interface for * Fujitsu laptops and provides support for hotkeys present on certain Fujitsu * laptops. * * This driver has been tested on a Fujitsu Lifebook S6410, S7020 and * P8010. It should work on most P-series and S-series Lifebooks, but * YMMV. * * The module parameter use_alt_lcd_levels switches between different ACPI * brightness controls which are used by different Fujitsu laptops. In most * cases the correct method is automatically detected. "use_alt_lcd_levels=1" * is applicable for a Fujitsu Lifebook S6410 if autodetection fails. * */ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt #include #include #include #include #include #include #include #include #include #include #include #if IS_ENABLED(CONFIG_LEDS_CLASS) #include #endif #include #define FUJITSU_DRIVER_VERSION "0.6.0" #define FUJITSU_LCD_N_LEVELS 8 #define ACPI_FUJITSU_CLASS "fujitsu" #define ACPI_FUJITSU_BL_HID "FUJ02B1" #define ACPI_FUJITSU_BL_DRIVER_NAME "Fujitsu laptop FUJ02B1 ACPI brightness driver" #define ACPI_FUJITSU_BL_DEVICE_NAME "Fujitsu FUJ02B1" #define ACPI_FUJITSU_LAPTOP_HID "FUJ02E3" #define ACPI_FUJITSU_LAPTOP_DRIVER_NAME "Fujitsu laptop FUJ02E3 ACPI hotkeys driver" #define ACPI_FUJITSU_LAPTOP_DEVICE_NAME "Fujitsu FUJ02E3" #define ACPI_FUJITSU_NOTIFY_CODE1 0x80 /* FUNC interface - command values */ #define FUNC_FLAGS 0x1000 #define FUNC_LEDS 0x1001 #define FUNC_BUTTONS 0x1002 #define FUNC_BACKLIGHT 0x1004 /* FUNC interface - responses */ #define UNSUPPORTED_CMD 0x80000000 /* FUNC interface - status flags */ #define FLAG_RFKILL 0x020 #define FLAG_LID 0x100 #define FLAG_DOCK 0x200 #if IS_ENABLED(CONFIG_LEDS_CLASS) /* FUNC interface - LED control */ #define FUNC_LED_OFF 0x1 #define FUNC_LED_ON 0x30001 #define KEYBOARD_LAMPS 0x100 #define LOGOLAMP_POWERON 0x2000 #define LOGOLAMP_ALWAYS 0x4000 #define RADIO_LED_ON 0x20 #define ECO_LED 0x10000 #define ECO_LED_ON 0x80000 #endif /* Hotkey details */ #define KEY1_CODE 0x410 /* codes for the keys in the GIRB register */ #define KEY2_CODE 0x411 #define KEY3_CODE 0x412 #define KEY4_CODE 0x413 #define KEY5_CODE 0x420 #define MAX_HOTKEY_RINGBUFFER_SIZE 100 #define RINGBUFFERSIZE 40 /* Debugging */ #define FUJLAPTOP_DBG_ERROR 0x0001 #define FUJLAPTOP_DBG_WARN 0x0002 #define FUJLAPTOP_DBG_INFO 0x0004 #define FUJLAPTOP_DBG_TRACE 0x0008 #ifdef CONFIG_FUJITSU_LAPTOP_DEBUG #define vdbg_printk(a_dbg_level, format, arg...) \ do { if (dbg_level & a_dbg_level) \ printk(KERN_DEBUG pr_fmt("%s: " format), __func__, ## arg); \ } while (0) #else #define vdbg_printk(a_dbg_level, format, arg...) \ do { } while (0) #endif /* Device controlling the backlight and associated keys */ struct fujitsu_bl { acpi_handle acpi_handle; struct acpi_device *dev; struct input_dev *input; char phys[32]; struct backlight_device *bl_device; int keycode1, keycode2, keycode3, keycode4, keycode5; unsigned int max_brightness; unsigned int brightness_changed; unsigned int brightness_level; }; static struct fujitsu_bl *fujitsu_bl; static int use_alt_lcd_levels = -1; static int disable_brightness_adjust = -1; /* Device used to access hotkeys and other features on the laptop */ struct fujitsu_laptop { acpi_handle acpi_handle; struct acpi_device *dev; struct input_dev *input; char phys[32]; struct platform_device *pf_device; struct kfifo fifo; spinlock_t fifo_lock; int flags_supported; int flags_state; int logolamp_registered; int kblamps_registered; int radio_led_registered; int eco_led_registered; }; static struct fujitsu_laptop *fujitsu_laptop; #if IS_ENABLED(CONFIG_LEDS_CLASS) static enum led_brightness logolamp_get(struct led_classdev *cdev); static int logolamp_set(struct led_classdev *cdev, enum led_brightness brightness); static struct led_classdev logolamp_led = { .name = "fujitsu::logolamp", .brightness_get = logolamp_get, .brightness_set_blocking = logolamp_set }; static enum led_brightness kblamps_get(struct led_classdev *cdev); static int kblamps_set(struct led_classdev *cdev, enum led_brightness brightness); static struct led_classdev kblamps_led = { .name = "fujitsu::kblamps", .brightness_get = kblamps_get, .brightness_set_blocking = kblamps_set }; static enum led_brightness radio_led_get(struct led_classdev *cdev); static int radio_led_set(struct led_classdev *cdev, enum led_brightness brightness); static struct led_classdev radio_led = { .name = "fujitsu::radio_led", .default_trigger = "rfkill-any", .brightness_get = radio_led_get, .brightness_set_blocking = radio_led_set }; static enum led_brightness eco_led_get(struct led_classdev *cdev); static int eco_led_set(struct led_classdev *cdev, enum led_brightness brightness); static struct led_classdev eco_led = { .name = "fujitsu::eco_led", .brightness_get = eco_led_get, .brightness_set_blocking = eco_led_set }; #endif #ifdef CONFIG_FUJITSU_LAPTOP_DEBUG static u32 dbg_level = 0x03; #endif /* Fujitsu ACPI interface function */ static int call_fext_func(int cmd, int arg0, int arg1, int arg2) { acpi_status status = AE_OK; union acpi_object params[4] = { { .type = ACPI_TYPE_INTEGER }, { .type = ACPI_TYPE_INTEGER }, { .type = ACPI_TYPE_INTEGER }, { .type = ACPI_TYPE_INTEGER } }; struct acpi_object_list arg_list = { 4, ¶ms[0] }; unsigned long long value; acpi_handle handle = NULL; status = acpi_get_handle(fujitsu_laptop->acpi_handle, "FUNC", &handle); if (ACPI_FAILURE(status)) { vdbg_printk(FUJLAPTOP_DBG_ERROR, "FUNC interface is not present\n"); return -ENODEV; } params[0].integer.value = cmd; params[1].integer.value = arg0; params[2].integer.value = arg1; params[3].integer.value = arg2; status = acpi_evaluate_integer(handle, NULL, &arg_list, &value); if (ACPI_FAILURE(status)) { vdbg_printk(FUJLAPTOP_DBG_WARN, "FUNC 0x%x (args 0x%x, 0x%x, 0x%x) call failed\n", cmd, arg0, arg1, arg2); return -ENODEV; } vdbg_printk(FUJLAPTOP_DBG_TRACE, "FUNC 0x%x (args 0x%x, 0x%x, 0x%x) returned 0x%x\n", cmd, arg0, arg1, arg2, (int)value); return value; } #if IS_ENABLED(CONFIG_LEDS_CLASS) /* LED class callbacks */ static int logolamp_set(struct led_classdev *cdev, enum led_brightness brightness) { int poweron = FUNC_LED_ON, always = FUNC_LED_ON; int ret; if (brightness < LED_HALF) poweron = FUNC_LED_OFF; if (brightness < LED_FULL) always = FUNC_LED_OFF; ret = call_fext_func(FUNC_LEDS, 0x1, LOGOLAMP_POWERON, poweron); if (ret < 0) return ret; return call_fext_func(FUNC_LEDS, 0x1, LOGOLAMP_ALWAYS, always); } static int kblamps_set(struct led_classdev *cdev, enum led_brightness brightness) { if (brightness >= LED_FULL) return call_fext_func(FUNC_LEDS, 0x1, KEYBOARD_LAMPS, FUNC_LED_ON); else return call_fext_func(FUNC_LEDS, 0x1, KEYBOARD_LAMPS, FUNC_LED_OFF); } static int radio_led_set(struct led_classdev *cdev, enum led_brightness brightness) { if (brightness >= LED_FULL) return call_fext_func(FUNC_FLAGS, 0x5, RADIO_LED_ON, RADIO_LED_ON); else return call_fext_func(FUNC_FLAGS, 0x5, RADIO_LED_ON, 0x0); } static int eco_led_set(struct led_classdev *cdev, enum led_brightness brightness) { int curr; curr = call_fext_func(FUNC_LEDS, 0x2, ECO_LED, 0x0); if (brightness >= LED_FULL) return call_fext_func(FUNC_LEDS, 0x1, ECO_LED, curr | ECO_LED_ON); else return call_fext_func(FUNC_LEDS, 0x1, ECO_LED, curr & ~ECO_LED_ON); } static enum led_brightness logolamp_get(struct led_classdev *cdev) { int ret; ret = call_fext_func(FUNC_LEDS, 0x2, LOGOLAMP_ALWAYS, 0x0); if (ret == FUNC_LED_ON) return LED_FULL; ret = call_fext_func(FUNC_LEDS, 0x2, LOGOLAMP_POWERON, 0x0); if (ret == FUNC_LED_ON) return LED_HALF; return LED_OFF; } static enum led_brightness kblamps_get(struct led_classdev *cdev) { enum led_brightness brightness = LED_OFF; if (call_fext_func(FUNC_LEDS, 0x2, KEYBOARD_LAMPS, 0x0) == FUNC_LED_ON) brightness = LED_FULL; return brightness; } static enum led_brightness radio_led_get(struct led_classdev *cdev) { enum led_brightness brightness = LED_OFF; if (call_fext_func(FUNC_FLAGS, 0x4, 0x0, 0x0) & RADIO_LED_ON) brightness = LED_FULL; return brightness; } static enum led_brightness eco_led_get(struct led_classdev *cdev) { enum led_brightness brightness = LED_OFF; if (call_fext_func(FUNC_LEDS, 0x2, ECO_LED, 0x0) & ECO_LED_ON) brightness = LED_FULL; return brightness; } #endif /* Hardware access for LCD brightness control */ static int set_lcd_level(int level) { acpi_status status = AE_OK; acpi_handle handle = NULL; vdbg_printk(FUJLAPTOP_DBG_TRACE, "set lcd level via SBLL [%d]\n", level); if (level < 0 || level >= fujitsu_bl->max_brightness) return -EINVAL; status = acpi_get_handle(fujitsu_bl->acpi_handle, "SBLL", &handle); if (ACPI_FAILURE(status)) { vdbg_printk(FUJLAPTOP_DBG_ERROR, "SBLL not present\n"); return -ENODEV; } status = acpi_execute_simple_method(handle, NULL, level); if (ACPI_FAILURE(status)) return -ENODEV; return 0; } static int set_lcd_level_alt(int level) { acpi_status status = AE_OK; acpi_handle handle = NULL; vdbg_printk(FUJLAPTOP_DBG_TRACE, "set lcd level via SBL2 [%d]\n", level); if (level < 0 || level >= fujitsu_bl->max_brightness) return -EINVAL; status = acpi_get_handle(fujitsu_bl->acpi_handle, "SBL2", &handle); if (ACPI_FAILURE(status)) { vdbg_printk(FUJLAPTOP_DBG_ERROR, "SBL2 not present\n"); return -ENODEV; } status = acpi_execute_simple_method(handle, NULL, level); if (ACPI_FAILURE(status)) return -ENODEV; return 0; } static int get_lcd_level(void) { unsigned long long state = 0; acpi_status status = AE_OK; vdbg_printk(FUJLAPTOP_DBG_TRACE, "get lcd level via GBLL\n"); status = acpi_evaluate_integer(fujitsu_bl->acpi_handle, "GBLL", NULL, &state); if (ACPI_FAILURE(status)) return 0; fujitsu_bl->brightness_level = state & 0x0fffffff; if (state & 0x80000000) fujitsu_bl->brightness_changed = 1; else fujitsu_bl->brightness_changed = 0; return fujitsu_bl->brightness_level; } static int get_max_brightness(void) { unsigned long long state = 0; acpi_status status = AE_OK; vdbg_printk(FUJLAPTOP_DBG_TRACE, "get max lcd level via RBLL\n"); status = acpi_evaluate_integer(fujitsu_bl->acpi_handle, "RBLL", NULL, &state); if (ACPI_FAILURE(status)) return -1; fujitsu_bl->max_brightness = state; return fujitsu_bl->max_brightness; } /* Backlight device stuff */ static int bl_get_brightness(struct backlight_device *b) { return get_lcd_level(); } static int bl_update_status(struct backlight_device *b) { int ret; if (b->props.power == FB_BLANK_POWERDOWN) ret = call_fext_func(FUNC_BACKLIGHT, 0x1, 0x4, 0x3); else ret = call_fext_func(FUNC_BACKLIGHT, 0x1, 0x4, 0x0); if (ret != 0) vdbg_printk(FUJLAPTOP_DBG_ERROR, "Unable to adjust backlight power, error code %i\n", ret); if (use_alt_lcd_levels) ret = set_lcd_level_alt(b->props.brightness); else ret = set_lcd_level(b->props.brightness); if (ret != 0) vdbg_printk(FUJLAPTOP_DBG_ERROR, "Unable to adjust LCD brightness, error code %i\n", ret); return ret; } static const struct backlight_ops fujitsu_bl_ops = { .get_brightness = bl_get_brightness, .update_status = bl_update_status, }; static ssize_t lid_show(struct device *dev, struct device_attribute *attr, char *buf) { if (!(fujitsu_laptop->flags_supported & FLAG_LID)) return sprintf(buf, "unknown\n"); if (fujitsu_laptop->flags_state & FLAG_LID) return sprintf(buf, "open\n"); else return sprintf(buf, "closed\n"); } static ssize_t dock_show(struct device *dev, struct device_attribute *attr, char *buf) { if (!(fujitsu_laptop->flags_supported & FLAG_DOCK)) return sprintf(buf, "unknown\n"); if (fujitsu_laptop->flags_state & FLAG_DOCK) return sprintf(buf, "docked\n"); else return sprintf(buf, "undocked\n"); } static ssize_t radios_show(struct device *dev, struct device_attribute *attr, char *buf) { if (!(fujitsu_laptop->flags_supported & FLAG_RFKILL)) return sprintf(buf, "unknown\n"); if (fujitsu_laptop->flags_state & FLAG_RFKILL) return sprintf(buf, "on\n"); else return sprintf(buf, "killed\n"); } static DEVICE_ATTR_RO(lid); static DEVICE_ATTR_RO(dock); static DEVICE_ATTR_RO(radios); static struct attribute *fujitsu_pf_attributes[] = { &dev_attr_lid.attr, &dev_attr_dock.attr, &dev_attr_radios.attr, NULL }; static struct attribute_group fujitsu_pf_attribute_group = { .attrs = fujitsu_pf_attributes }; static struct platform_driver fujitsu_pf_driver = { .driver = { .name = "fujitsu-laptop", } }; static void __init dmi_check_cb_common(const struct dmi_system_id *id) { pr_info("Identified laptop model '%s'\n", id->ident); } static int __init dmi_check_cb_s6410(const struct dmi_system_id *id) { dmi_check_cb_common(id); fujitsu_bl->keycode1 = KEY_SCREENLOCK; /* "Lock" */ fujitsu_bl->keycode2 = KEY_HELP; /* "Mobility Center" */ return 1; } static int __init dmi_check_cb_s6420(const struct dmi_system_id *id) { dmi_check_cb_common(id); fujitsu_bl->keycode1 = KEY_SCREENLOCK; /* "Lock" */ fujitsu_bl->keycode2 = KEY_HELP; /* "Mobility Center" */ return 1; } static int __init dmi_check_cb_p8010(const struct dmi_system_id *id) { dmi_check_cb_common(id); fujitsu_bl->keycode1 = KEY_HELP; /* "Support" */ fujitsu_bl->keycode3 = KEY_SWITCHVIDEOMODE; /* "Presentation" */ fujitsu_bl->keycode4 = KEY_WWW; /* "Internet" */ return 1; } static const struct dmi_system_id fujitsu_dmi_table[] __initconst = { { .ident = "Fujitsu Siemens S6410", .matches = { DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"), DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK S6410"), }, .callback = dmi_check_cb_s6410}, { .ident = "Fujitsu Siemens S6420", .matches = { DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"), DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK S6420"), }, .callback = dmi_check_cb_s6420}, { .ident = "Fujitsu LifeBook P8010", .matches = { DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"), DMI_MATCH(DMI_PRODUCT_NAME, "LifeBook P8010"), }, .callback = dmi_check_cb_p8010}, {} }; /* ACPI device for LCD brightness control */ static int acpi_fujitsu_bl_input_setup(struct acpi_device *device) { struct fujitsu_bl *fujitsu_bl = acpi_driver_data(device); fujitsu_bl->input = devm_input_allocate_device(&device->dev); if (!fujitsu_bl->input) return -ENOMEM; snprintf(fujitsu_bl->phys, sizeof(fujitsu_bl->phys), "%s/video/input0", acpi_device_hid(device)); fujitsu_bl->input->name = acpi_device_name(device); fujitsu_bl->input->phys = fujitsu_bl->phys; fujitsu_bl->input->id.bustype = BUS_HOST; fujitsu_bl->input->id.product = 0x06; fujitsu_bl->input->evbit[0] = BIT(EV_KEY); set_bit(KEY_BRIGHTNESSUP, fujitsu_bl->input->keybit); set_bit(KEY_BRIGHTNESSDOWN, fujitsu_bl->input->keybit); set_bit(KEY_UNKNOWN, fujitsu_bl->input->keybit); return input_register_device(fujitsu_bl->input); } static int fujitsu_backlight_register(void) { struct backlight_properties props = { .brightness = fujitsu_bl->brightness_level, .max_brightness = fujitsu_bl->max_brightness - 1, .type = BACKLIGHT_PLATFORM }; struct backlight_device *bd; bd = backlight_device_register("fujitsu-laptop", NULL, NULL, &fujitsu_bl_ops, &props); if (IS_ERR(bd)) return PTR_ERR(bd); fujitsu_bl->bl_device = bd; return 0; } static int acpi_fujitsu_bl_add(struct acpi_device *device) { int state = 0; int error; if (!device) return -EINVAL; fujitsu_bl->acpi_handle = device->handle; sprintf(acpi_device_name(device), "%s", ACPI_FUJITSU_BL_DEVICE_NAME); sprintf(acpi_device_class(device), "%s", ACPI_FUJITSU_CLASS); device->driver_data = fujitsu_bl; error = acpi_fujitsu_bl_input_setup(device); if (error) return error; error = acpi_bus_update_power(fujitsu_bl->acpi_handle, &state); if (error) { pr_err("Error reading power state\n"); return error; } pr_info("ACPI: %s [%s] (%s)\n", acpi_device_name(device), acpi_device_bid(device), !device->power.state ? "on" : "off"); fujitsu_bl->dev = device; if (acpi_has_method(device->handle, METHOD_NAME__INI)) { vdbg_printk(FUJLAPTOP_DBG_INFO, "Invoking _INI\n"); if (ACPI_FAILURE (acpi_evaluate_object (device->handle, METHOD_NAME__INI, NULL, NULL))) pr_err("_INI Method failed\n"); } if (use_alt_lcd_levels == -1) { if (acpi_has_method(NULL, "\\_SB.PCI0.LPCB.FJEX.SBL2")) use_alt_lcd_levels = 1; else use_alt_lcd_levels = 0; vdbg_printk(FUJLAPTOP_DBG_TRACE, "auto-detected usealt as %i\n", use_alt_lcd_levels); } /* do config (detect defaults) */ use_alt_lcd_levels = use_alt_lcd_levels == 1 ? 1 : 0; disable_brightness_adjust = disable_brightness_adjust == 1 ? 1 : 0; vdbg_printk(FUJLAPTOP_DBG_INFO, "config: [alt interface: %d], [adjust disable: %d]\n", use_alt_lcd_levels, disable_brightness_adjust); if (get_max_brightness() <= 0) fujitsu_bl->max_brightness = FUJITSU_LCD_N_LEVELS; get_lcd_level(); if (acpi_video_get_backlight_type() == acpi_backlight_vendor) { error = fujitsu_backlight_register(); if (error) return error; } return 0; } static int acpi_fujitsu_bl_remove(struct acpi_device *device) { struct fujitsu_bl *fujitsu_bl = acpi_driver_data(device); backlight_device_unregister(fujitsu_bl->bl_device); fujitsu_bl->acpi_handle = NULL; return 0; } /* Brightness notify */ static void acpi_fujitsu_bl_notify(struct acpi_device *device, u32 event) { struct input_dev *input; int oldb, newb, keycode; input = fujitsu_bl->input; if (event != ACPI_FUJITSU_NOTIFY_CODE1) { keycode = KEY_UNKNOWN; vdbg_printk(FUJLAPTOP_DBG_WARN, "unsupported event [0x%x]\n", event); input_report_key(input, keycode, 1); input_sync(input); input_report_key(input, keycode, 0); input_sync(input); return; } oldb = fujitsu_bl->brightness_level; get_lcd_level(); newb = fujitsu_bl->brightness_level; vdbg_printk(FUJLAPTOP_DBG_TRACE, "brightness button event [%i -> %i (%i)]\n", oldb, newb, fujitsu_bl->brightness_changed); if (oldb == newb) return; if (disable_brightness_adjust != 1) { if (use_alt_lcd_levels) set_lcd_level_alt(newb); else set_lcd_level(newb); } keycode = oldb < newb ? KEY_BRIGHTNESSUP : KEY_BRIGHTNESSDOWN; input_report_key(input, keycode, 1); input_sync(input); input_report_key(input, keycode, 0); input_sync(input); } /* ACPI device for hotkey handling */ static int fujitsu_laptop_platform_add(void) { int ret; fujitsu_laptop->pf_device = platform_device_alloc("fujitsu-laptop", -1); if (!fujitsu_laptop->pf_device) return -ENOMEM; ret = platform_device_add(fujitsu_laptop->pf_device); if (ret) goto err_put_platform_device; ret = sysfs_create_group(&fujitsu_laptop->pf_device->dev.kobj, &fujitsu_pf_attribute_group); if (ret) goto err_del_platform_device; return 0; err_del_platform_device: platform_device_del(fujitsu_laptop->pf_device); err_put_platform_device: platform_device_put(fujitsu_laptop->pf_device); return ret; } static void fujitsu_laptop_platform_remove(void) { sysfs_remove_group(&fujitsu_laptop->pf_device->dev.kobj, &fujitsu_pf_attribute_group); platform_device_unregister(fujitsu_laptop->pf_device); } static int acpi_fujitsu_laptop_add(struct acpi_device *device) { int result = 0; int state = 0; struct input_dev *input; int error; int i; if (!device) return -EINVAL; fujitsu_laptop->acpi_handle = device->handle; sprintf(acpi_device_name(device), "%s", ACPI_FUJITSU_LAPTOP_DEVICE_NAME); sprintf(acpi_device_class(device), "%s", ACPI_FUJITSU_CLASS); device->driver_data = fujitsu_laptop; /* kfifo */ spin_lock_init(&fujitsu_laptop->fifo_lock); error = kfifo_alloc(&fujitsu_laptop->fifo, RINGBUFFERSIZE * sizeof(int), GFP_KERNEL); if (error) { pr_err("kfifo_alloc failed\n"); goto err_stop; } fujitsu_laptop->input = input = input_allocate_device(); if (!input) { error = -ENOMEM; goto err_free_fifo; } snprintf(fujitsu_laptop->phys, sizeof(fujitsu_laptop->phys), "%s/video/input0", acpi_device_hid(device)); input->name = acpi_device_name(device); input->phys = fujitsu_laptop->phys; input->id.bustype = BUS_HOST; input->id.product = 0x06; input->dev.parent = &device->dev; set_bit(EV_KEY, input->evbit); set_bit(fujitsu_bl->keycode1, input->keybit); set_bit(fujitsu_bl->keycode2, input->keybit); set_bit(fujitsu_bl->keycode3, input->keybit); set_bit(fujitsu_bl->keycode4, input->keybit); set_bit(fujitsu_bl->keycode5, input->keybit); set_bit(KEY_TOUCHPAD_TOGGLE, input->keybit); set_bit(KEY_UNKNOWN, input->keybit); error = input_register_device(input); if (error) goto err_free_input_dev; error = acpi_bus_update_power(fujitsu_laptop->acpi_handle, &state); if (error) { pr_err("Error reading power state\n"); goto err_unregister_input_dev; } pr_info("ACPI: %s [%s] (%s)\n", acpi_device_name(device), acpi_device_bid(device), !device->power.state ? "on" : "off"); fujitsu_laptop->dev = device; if (acpi_has_method(device->handle, METHOD_NAME__INI)) { vdbg_printk(FUJLAPTOP_DBG_INFO, "Invoking _INI\n"); if (ACPI_FAILURE (acpi_evaluate_object (device->handle, METHOD_NAME__INI, NULL, NULL))) pr_err("_INI Method failed\n"); } i = 0; while (call_fext_func(FUNC_BUTTONS, 0x1, 0x0, 0x0) != 0 && (i++) < MAX_HOTKEY_RINGBUFFER_SIZE) ; /* No action, result is discarded */ vdbg_printk(FUJLAPTOP_DBG_INFO, "Discarded %i ringbuffer entries\n", i); fujitsu_laptop->flags_supported = call_fext_func(FUNC_FLAGS, 0x0, 0x0, 0x0); /* Make sure our bitmask of supported functions is cleared if the RFKILL function block is not implemented, like on the S7020. */ if (fujitsu_laptop->flags_supported == UNSUPPORTED_CMD) fujitsu_laptop->flags_supported = 0; if (fujitsu_laptop->flags_supported) fujitsu_laptop->flags_state = call_fext_func(FUNC_FLAGS, 0x4, 0x0, 0x0); /* Suspect this is a keymap of the application panel, print it */ pr_info("BTNI: [0x%x]\n", call_fext_func(FUNC_BUTTONS, 0x0, 0x0, 0x0)); /* Sync backlight power status */ if (fujitsu_bl->bl_device && acpi_video_get_backlight_type() == acpi_backlight_vendor) { if (call_fext_func(FUNC_BACKLIGHT, 0x2, 0x4, 0x0) == 3) fujitsu_bl->bl_device->props.power = FB_BLANK_POWERDOWN; else fujitsu_bl->bl_device->props.power = FB_BLANK_UNBLANK; } error = fujitsu_laptop_platform_add(); if (error) goto err_unregister_input_dev; #if IS_ENABLED(CONFIG_LEDS_CLASS) if (call_fext_func(FUNC_LEDS, 0x0, 0x0, 0x0) & LOGOLAMP_POWERON) { result = led_classdev_register(&fujitsu_laptop->pf_device->dev, &logolamp_led); if (result == 0) { fujitsu_laptop->logolamp_registered = 1; } else { pr_err("Could not register LED handler for logo lamp, error %i\n", result); } } if ((call_fext_func(FUNC_LEDS, 0x0, 0x0, 0x0) & KEYBOARD_LAMPS) && (call_fext_func(FUNC_BUTTONS, 0x0, 0x0, 0x0) == 0x0)) { result = led_classdev_register(&fujitsu_laptop->pf_device->dev, &kblamps_led); if (result == 0) { fujitsu_laptop->kblamps_registered = 1; } else { pr_err("Could not register LED handler for keyboard lamps, error %i\n", result); } } /* * BTNI bit 24 seems to indicate the presence of a radio toggle * button in place of a slide switch, and all such machines appear * to also have an RF LED. Therefore use bit 24 as an indicator * that an RF LED is present. */ if (call_fext_func(FUNC_BUTTONS, 0x0, 0x0, 0x0) & BIT(24)) { result = led_classdev_register(&fujitsu_laptop->pf_device->dev, &radio_led); if (result == 0) { fujitsu_laptop->radio_led_registered = 1; } else { pr_err("Could not register LED handler for radio LED, error %i\n", result); } } /* Support for eco led is not always signaled in bit corresponding * to the bit used to control the led. According to the DSDT table, * bit 14 seems to indicate presence of said led as well. * Confirm by testing the status. */ if ((call_fext_func(FUNC_LEDS, 0x0, 0x0, 0x0) & BIT(14)) && (call_fext_func(FUNC_LEDS, 0x2, ECO_LED, 0x0) != UNSUPPORTED_CMD)) { result = led_classdev_register(&fujitsu_laptop->pf_device->dev, &eco_led); if (result == 0) { fujitsu_laptop->eco_led_registered = 1; } else { pr_err("Could not register LED handler for eco LED, error %i\n", result); } } #endif return result; err_unregister_input_dev: input_unregister_device(input); input = NULL; err_free_input_dev: input_free_device(input); err_free_fifo: kfifo_free(&fujitsu_laptop->fifo); err_stop: return error; } static int acpi_fujitsu_laptop_remove(struct acpi_device *device) { struct fujitsu_laptop *fujitsu_laptop = acpi_driver_data(device); struct input_dev *input = fujitsu_laptop->input; #if IS_ENABLED(CONFIG_LEDS_CLASS) if (fujitsu_laptop->logolamp_registered) led_classdev_unregister(&logolamp_led); if (fujitsu_laptop->kblamps_registered) led_classdev_unregister(&kblamps_led); if (fujitsu_laptop->radio_led_registered) led_classdev_unregister(&radio_led); if (fujitsu_laptop->eco_led_registered) led_classdev_unregister(&eco_led); #endif fujitsu_laptop_platform_remove(); input_unregister_device(input); kfifo_free(&fujitsu_laptop->fifo); fujitsu_laptop->acpi_handle = NULL; return 0; } static void acpi_fujitsu_laptop_press(int keycode) { struct input_dev *input = fujitsu_laptop->input; int status; status = kfifo_in_locked(&fujitsu_laptop->fifo, (unsigned char *)&keycode, sizeof(keycode), &fujitsu_laptop->fifo_lock); if (status != sizeof(keycode)) { vdbg_printk(FUJLAPTOP_DBG_WARN, "Could not push keycode [0x%x]\n", keycode); return; } input_report_key(input, keycode, 1); input_sync(input); vdbg_printk(FUJLAPTOP_DBG_TRACE, "Push keycode into ringbuffer [%d]\n", keycode); } static void acpi_fujitsu_laptop_release(void) { struct input_dev *input = fujitsu_laptop->input; int keycode, status; while (true) { status = kfifo_out_locked(&fujitsu_laptop->fifo, (unsigned char *)&keycode, sizeof(keycode), &fujitsu_laptop->fifo_lock); if (status != sizeof(keycode)) return; input_report_key(input, keycode, 0); input_sync(input); vdbg_printk(FUJLAPTOP_DBG_TRACE, "Pop keycode from ringbuffer [%d]\n", keycode); } } static void acpi_fujitsu_laptop_notify(struct acpi_device *device, u32 event) { struct input_dev *input; int keycode; unsigned int irb = 1; int i; input = fujitsu_laptop->input; if (event != ACPI_FUJITSU_NOTIFY_CODE1) { keycode = KEY_UNKNOWN; vdbg_printk(FUJLAPTOP_DBG_WARN, "Unsupported event [0x%x]\n", event); input_report_key(input, keycode, 1); input_sync(input); input_report_key(input, keycode, 0); input_sync(input); return; } if (fujitsu_laptop->flags_supported) fujitsu_laptop->flags_state = call_fext_func(FUNC_FLAGS, 0x4, 0x0, 0x0); i = 0; while ((irb = call_fext_func(FUNC_BUTTONS, 0x1, 0x0, 0x0)) != 0 && (i++) < MAX_HOTKEY_RINGBUFFER_SIZE) { switch (irb & 0x4ff) { case KEY1_CODE: keycode = fujitsu_bl->keycode1; break; case KEY2_CODE: keycode = fujitsu_bl->keycode2; break; case KEY3_CODE: keycode = fujitsu_bl->keycode3; break; case KEY4_CODE: keycode = fujitsu_bl->keycode4; break; case KEY5_CODE: keycode = fujitsu_bl->keycode5; break; case 0: keycode = 0; break; default: vdbg_printk(FUJLAPTOP_DBG_WARN, "Unknown GIRB result [%x]\n", irb); keycode = -1; break; } if (keycode > 0) acpi_fujitsu_laptop_press(keycode); else if (keycode == 0) acpi_fujitsu_laptop_release(); } /* On some models (first seen on the Skylake-based Lifebook * E736/E746/E756), the touchpad toggle hotkey (Fn+F4) is * handled in software; its state is queried using FUNC_FLAGS */ if ((fujitsu_laptop->flags_supported & BIT(26)) && (call_fext_func(FUNC_FLAGS, 0x1, 0x0, 0x0) & BIT(26))) { keycode = KEY_TOUCHPAD_TOGGLE; input_report_key(input, keycode, 1); input_sync(input); input_report_key(input, keycode, 0); input_sync(input); } } /* Initialization */ static const struct acpi_device_id fujitsu_bl_device_ids[] = { {ACPI_FUJITSU_BL_HID, 0}, {"", 0}, }; static struct acpi_driver acpi_fujitsu_bl_driver = { .name = ACPI_FUJITSU_BL_DRIVER_NAME, .class = ACPI_FUJITSU_CLASS, .ids = fujitsu_bl_device_ids, .ops = { .add = acpi_fujitsu_bl_add, .remove = acpi_fujitsu_bl_remove, .notify = acpi_fujitsu_bl_notify, }, }; static const struct acpi_device_id fujitsu_laptop_device_ids[] = { {ACPI_FUJITSU_LAPTOP_HID, 0}, {"", 0}, }; static struct acpi_driver acpi_fujitsu_laptop_driver = { .name = ACPI_FUJITSU_LAPTOP_DRIVER_NAME, .class = ACPI_FUJITSU_CLASS, .ids = fujitsu_laptop_device_ids, .ops = { .add = acpi_fujitsu_laptop_add, .remove = acpi_fujitsu_laptop_remove, .notify = acpi_fujitsu_laptop_notify, }, }; static const struct acpi_device_id fujitsu_ids[] __used = { {ACPI_FUJITSU_BL_HID, 0}, {ACPI_FUJITSU_LAPTOP_HID, 0}, {"", 0} }; MODULE_DEVICE_TABLE(acpi, fujitsu_ids); static int __init fujitsu_init(void) { int ret; if (acpi_disabled) return -ENODEV; fujitsu_bl = kzalloc(sizeof(struct fujitsu_bl), GFP_KERNEL); if (!fujitsu_bl) return -ENOMEM; fujitsu_bl->keycode1 = KEY_PROG1; fujitsu_bl->keycode2 = KEY_PROG2; fujitsu_bl->keycode3 = KEY_PROG3; fujitsu_bl->keycode4 = KEY_PROG4; fujitsu_bl->keycode5 = KEY_RFKILL; dmi_check_system(fujitsu_dmi_table); ret = acpi_bus_register_driver(&acpi_fujitsu_bl_driver); if (ret) goto err_free_fujitsu_bl; /* Register platform stuff */ ret = platform_driver_register(&fujitsu_pf_driver); if (ret) goto err_unregister_acpi; /* Register laptop driver */ fujitsu_laptop = kzalloc(sizeof(struct fujitsu_laptop), GFP_KERNEL); if (!fujitsu_laptop) { ret = -ENOMEM; goto err_unregister_platform_driver; } ret = acpi_bus_register_driver(&acpi_fujitsu_laptop_driver); if (ret) goto err_free_fujitsu_laptop; pr_info("driver " FUJITSU_DRIVER_VERSION " successfully loaded\n"); return 0; err_free_fujitsu_laptop: kfree(fujitsu_laptop); err_unregister_platform_driver: platform_driver_unregister(&fujitsu_pf_driver); err_unregister_acpi: acpi_bus_unregister_driver(&acpi_fujitsu_bl_driver); err_free_fujitsu_bl: kfree(fujitsu_bl); return ret; } static void __exit fujitsu_cleanup(void) { acpi_bus_unregister_driver(&acpi_fujitsu_laptop_driver); kfree(fujitsu_laptop); platform_driver_unregister(&fujitsu_pf_driver); acpi_bus_unregister_driver(&acpi_fujitsu_bl_driver); kfree(fujitsu_bl); pr_info("driver unloaded\n"); } module_init(fujitsu_init); module_exit(fujitsu_cleanup); module_param(use_alt_lcd_levels, uint, 0644); MODULE_PARM_DESC(use_alt_lcd_levels, "Use alternative interface for lcd_levels (needed for Lifebook s6410)."); module_param(disable_brightness_adjust, uint, 0644); MODULE_PARM_DESC(disable_brightness_adjust, "Disable brightness adjustment ."); #ifdef CONFIG_FUJITSU_LAPTOP_DEBUG module_param_named(debug, dbg_level, uint, 0644); MODULE_PARM_DESC(debug, "Sets debug level bit-mask"); #endif MODULE_AUTHOR("Jonathan Woithe, Peter Gruber, Tony Vroon"); MODULE_DESCRIPTION("Fujitsu laptop extras support"); MODULE_VERSION(FUJITSU_DRIVER_VERSION); MODULE_LICENSE("GPL");