// SPDX-License-Identifier: GPL-2.0-or-later
/*-*-linux-c-*-*/
/*
Copyright ( C ) 2007 , 2008 Jonathan Woithe < jwoithe @ just42 . net >
Copyright ( C ) 2008 Peter Gruber < nokos @ gmx . net >
Copyright ( C ) 2008 Tony Vroon < tony @ linx . net >
Based on earlier work :
Copyright ( C ) 2003 Shane Spencer < shane @ bogomip . com >
Adrian Yee < brewt - fujitsu @ brewt . org >
Templated from msi - laptop . c and thinkpad_acpi . c which is copyright
by its respective authors .
*/
/*
* fujitsu - laptop . c - Fujitsu laptop support , providing access to additional
* features made available on a range of Fujitsu laptops including the
* P2xxx / P5xxx / S2xxx / 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 S2110 , 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 <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/acpi.h>
#include <linux/bitops.h>
#include <linux/dmi.h>
#include <linux/backlight.h>
#include <linux/input.h>
#include <linux/input/sparse-keymap.h>
#include <linux/kfifo.h>
#include <linux/leds.h>
#include <linux/platform_device.h>
#include <linux/power_supply.h>
#include <acpi/battery.h>
#include <acpi/video.h>
#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_CODE 0 x80
/* FUNC interface - command values */
#define FUNC_FLAGS BIT(12 )
#define FUNC_LEDS (BIT(12 ) | BIT(0 ))
#define FUNC_BUTTONS (BIT(12 ) | BIT(1 ))
#define FUNC_BACKLIGHT (BIT(12 ) | BIT(2 ))
/* FUNC interface - responses */
#define UNSUPPORTED_CMD 0 x80000000
/* FUNC interface - status flags */
#define FLAG_RFKILL BIT(5 )
#define FLAG_LID BIT(8 )
#define FLAG_DOCK BIT(9 )
#define FLAG_TOUCHPAD_TOGGLE BIT(26 )
#define FLAG_MICMUTE BIT(29 )
#define FLAG_SOFTKEYS (FLAG_RFKILL | FLAG_TOUCHPAD_TOGGLE | FLAG_MICMUTE)
/* FUNC interface - LED control */
#define FUNC_LED_OFF BIT(0 )
#define FUNC_LED_ON (BIT(0 ) | BIT(16 ) | BIT(17 ))
#define LOGOLAMP_POWERON BIT(13 )
#define LOGOLAMP_ALWAYS BIT(14 )
#define KEYBOARD_LAMPS BIT(8 )
#define RADIO_LED_ON BIT(5 )
#define ECO_LED BIT(16 )
#define ECO_LED_ON BIT(19 )
/* FUNC interface - backlight power control */
#define BACKLIGHT_PARAM_POWER BIT(2 )
#define BACKLIGHT_OFF (BIT(0 ) | BIT(1 ))
#define BACKLIGHT_ON 0
/* FUNC interface - battery control interface */
#define FUNC_S006_METHOD 0 x1006
#define CHARGE_CONTROL_RW 0 x21
/* Scancodes read from the GIRB register */
#define KEY1_CODE 0 x410
#define KEY2_CODE 0 x411
#define KEY3_CODE 0 x412
#define KEY4_CODE 0 x413
#define KEY5_CODE 0 x414
#define KEY6_CODE 0 x415
#define KEY7_CODE 0 x416
#define KEY8_CODE 0 x417
#define KEY9_CODE 0 x420
/* Hotkey ringbuffer limits */
#define MAX_HOTKEY_RINGBUFFER_SIZE 100
#define RINGBUFFERSIZE 40
/* Module parameters */
static int use_alt_lcd_levels = -1 ;
static bool disable_brightness_adjust;
/* Device controlling the backlight and associated keys */
struct fujitsu_bl {
struct input_dev *input;
char phys[32 ];
struct backlight_device *bl_device;
unsigned int max_brightness;
unsigned int brightness_level;
};
static struct fujitsu_bl *fujitsu_bl;
/* Device used to access hotkeys and other features on the laptop */
struct fujitsu_laptop {
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;
bool charge_control_supported;
};
static struct acpi_device *fext;
/* Fujitsu ACPI interface function */
static int call_fext_func(struct acpi_device *device,
int func, int op, int feature, int state)
{
union acpi_object params[4 ] = {
{ .integer.type = ACPI_TYPE_INTEGER, .integer.value = func },
{ .integer.type = ACPI_TYPE_INTEGER, .integer.value = op },
{ .integer.type = ACPI_TYPE_INTEGER, .integer.value = feature },
{ .integer.type = ACPI_TYPE_INTEGER, .integer.value = state }
};
struct acpi_object_list arg_list = { 4 , params };
unsigned long long value;
acpi_status status;
status = acpi_evaluate_integer(device->handle, "FUNC" , &arg_list,
&value);
if (ACPI_FAILURE(status)) {
acpi_handle_err(device->handle, "Failed to evaluate FUNC\n" );
return -ENODEV;
}
acpi_handle_debug(device->handle,
"FUNC 0x%x (args 0x%x, 0x%x, 0x%x) returned 0x%x\n" ,
func, op, feature, state, (int )value);
return value;
}
/* Battery charge control code */
static ssize_t charge_control_end_threshold_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
int cc_end_value, s006_cc_return;
unsigned int value;
int ret;
ret = kstrtouint(buf, 10 , &value);
if (ret)
return ret;
if (value > 100 )
return -EINVAL;
if (value < 50 )
value = 50 ;
cc_end_value = value * 0 x100 + 0 x20;
s006_cc_return = call_fext_func(fext, FUNC_S006_METHOD,
CHARGE_CONTROL_RW, cc_end_value, 0 x0);
if (s006_cc_return < 0 )
return s006_cc_return;
/*
* The S006 0 x21 method returns 0 x00 in case the provided value
* is invalid .
*/
if (s006_cc_return == 0 x00)
return -EINVAL;
return count;
}
static ssize_t charge_control_end_threshold_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
int status;
status = call_fext_func(fext, FUNC_S006_METHOD,
CHARGE_CONTROL_RW, 0 x21, 0 x0);
if (status < 0 )
return status;
return sysfs_emit(buf, "%d\n" , status);
}
static DEVICE_ATTR_RW(charge_control_end_threshold);
/* ACPI battery hook */
static int fujitsu_battery_add_hook(struct power_supply *battery,
struct acpi_battery_hook *hook)
{
return device_create_file(&battery->dev,
&dev_attr_charge_control_end_threshold);
}
static int fujitsu_battery_remove_hook(struct power_supply *battery,
struct acpi_battery_hook *hook)
{
device_remove_file(&battery->dev,
&dev_attr_charge_control_end_threshold);
return 0 ;
}
static struct acpi_battery_hook battery_hook = {
.add_battery = fujitsu_battery_add_hook,
.remove_battery = fujitsu_battery_remove_hook,
.name = "Fujitsu Battery Extension" ,
};
/*
* These functions are intended to be called from acpi_fujitsu_laptop_add and
* acpi_fujitsu_laptop_remove .
*/
static int fujitsu_battery_charge_control_add(struct acpi_device *device)
{
struct fujitsu_laptop *priv = acpi_driver_data(device);
int s006_cc_return;
priv->charge_control_supported = false ;
/*
* Check if the S006 0 x21 method exists by trying to get the current
* battery charge limit .
*/
s006_cc_return = call_fext_func(fext, FUNC_S006_METHOD,
CHARGE_CONTROL_RW, 0 x21, 0 x0);
if (s006_cc_return < 0 )
return s006_cc_return;
if (s006_cc_return == UNSUPPORTED_CMD)
return -ENODEV;
priv->charge_control_supported = true ;
battery_hook_register(&battery_hook);
return 0 ;
}
static void fujitsu_battery_charge_control_remove(struct acpi_device *device)
{
struct fujitsu_laptop *priv = acpi_driver_data(device);
if (priv->charge_control_supported)
battery_hook_unregister(&battery_hook);
}
/* Hardware access for LCD brightness control */
static int set_lcd_level(struct acpi_device *device, int level)
{
struct fujitsu_bl *priv = acpi_driver_data(device);
acpi_status status;
char *method;
switch (use_alt_lcd_levels) {
case -1 :
if (acpi_has_method(device->handle, "SBL2" ))
method = "SBL2" ;
else
method = "SBLL" ;
break ;
case 1 :
method = "SBL2" ;
break ;
default :
method = "SBLL" ;
break ;
}
acpi_handle_debug(device->handle, "set lcd level via %s [%d]\n" , method,
level);
if (level < 0 || level >= priv->max_brightness)
return -EINVAL;
status = acpi_execute_simple_method(device->handle, method, level);
if (ACPI_FAILURE(status)) {
acpi_handle_err(device->handle, "Failed to evaluate %s\n" ,
method);
return -ENODEV;
}
priv->brightness_level = level;
return 0 ;
}
static int get_lcd_level(struct acpi_device *device)
{
struct fujitsu_bl *priv = acpi_driver_data(device);
unsigned long long state = 0 ;
acpi_status status = AE_OK;
acpi_handle_debug(device->handle, "get lcd level via GBLL\n" );
status = acpi_evaluate_integer(device->handle, "GBLL" , NULL, &state);
if (ACPI_FAILURE(status))
return 0 ;
priv->brightness_level = state & 0 x0fffffff;
return priv->brightness_level;
}
static int get_max_brightness(struct acpi_device *device)
{
struct fujitsu_bl *priv = acpi_driver_data(device);
unsigned long long state = 0 ;
acpi_status status = AE_OK;
acpi_handle_debug(device->handle, "get max lcd level via RBLL\n" );
status = acpi_evaluate_integer(device->handle, "RBLL" , NULL, &state);
if (ACPI_FAILURE(status))
return -1 ;
priv->max_brightness = state;
return priv->max_brightness;
}
/* Backlight device stuff */
static int bl_get_brightness(struct backlight_device *b)
{
struct acpi_device *device = bl_get_data(b);
return b->props.power == BACKLIGHT_POWER_OFF ? 0 : get_lcd_level(device);
}
static int bl_update_status(struct backlight_device *b)
{
struct acpi_device *device = bl_get_data(b);
if (fext) {
if (b->props.power == BACKLIGHT_POWER_OFF)
call_fext_func(fext, FUNC_BACKLIGHT, 0 x1,
BACKLIGHT_PARAM_POWER, BACKLIGHT_OFF);
else
call_fext_func(fext, FUNC_BACKLIGHT, 0 x1,
BACKLIGHT_PARAM_POWER, BACKLIGHT_ON);
}
return set_lcd_level(device, b->props.brightness);
}
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)
{
struct fujitsu_laptop *priv = dev_get_drvdata(dev);
if (!(priv->flags_supported & FLAG_LID))
return sysfs_emit(buf, "unknown\n" );
if (priv->flags_state & FLAG_LID)
return sysfs_emit(buf, "open\n" );
else
return sysfs_emit(buf, "closed\n" );
}
static ssize_t dock_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct fujitsu_laptop *priv = dev_get_drvdata(dev);
if (!(priv->flags_supported & FLAG_DOCK))
return sysfs_emit(buf, "unknown\n" );
if (priv->flags_state & FLAG_DOCK)
return sysfs_emit(buf, "docked\n" );
else
return sysfs_emit(buf, "undocked\n" );
}
static ssize_t radios_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct fujitsu_laptop *priv = dev_get_drvdata(dev);
if (!(priv->flags_supported & FLAG_RFKILL))
return sysfs_emit(buf, "unknown\n" );
if (priv->flags_state & FLAG_RFKILL)
return sysfs_emit(buf, "on\n" );
else
return sysfs_emit(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 const struct attribute_group fujitsu_pf_attribute_group = {
.attrs = fujitsu_pf_attributes
};
static struct platform_driver fujitsu_pf_driver = {
.driver = {
.name = "fujitsu-laptop" ,
}
};
/* ACPI device for LCD brightness control */
static const struct key_entry keymap_backlight[] = {
{ KE_KEY, true , { KEY_BRIGHTNESSUP } },
{ KE_KEY, false , { KEY_BRIGHTNESSDOWN } },
{ KE_END, 0 }
};
static int acpi_fujitsu_bl_input_setup(struct acpi_device *device)
{
struct fujitsu_bl *priv = acpi_driver_data(device);
int ret;
priv->input = devm_input_allocate_device(&device->dev);
if (!priv->input)
return -ENOMEM;
snprintf(priv->phys, sizeof (priv->phys), "%s/video/input0" ,
acpi_device_hid(device));
priv->input->name = acpi_device_name(device);
priv->input->phys = priv->phys;
priv->input->id.bustype = BUS_HOST;
priv->input->id.product = 0 x06;
ret = sparse_keymap_setup(priv->input, keymap_backlight, NULL);
if (ret)
return ret;
return input_register_device(priv->input);
}
static int fujitsu_backlight_register(struct acpi_device *device)
{
struct fujitsu_bl *priv = acpi_driver_data(device);
const struct backlight_properties props = {
.brightness = priv->brightness_level,
.max_brightness = priv->max_brightness - 1 ,
.type = BACKLIGHT_PLATFORM
};
struct backlight_device *bd;
bd = devm_backlight_device_register(&device->dev, "fujitsu-laptop" ,
&device->dev, device,
&fujitsu_bl_ops, &props);
if (IS_ERR(bd))
return PTR_ERR(bd);
priv->bl_device = bd;
return 0 ;
}
static int acpi_fujitsu_bl_add(struct acpi_device *device)
{
struct fujitsu_bl *priv;
int ret;
if (acpi_video_get_backlight_type() != acpi_backlight_vendor)
return -ENODEV;
priv = devm_kzalloc(&device->dev, sizeof (*priv), GFP_KERNEL);
if (!priv)
return -ENOMEM;
fujitsu_bl = priv;
strscpy(acpi_device_name(device), ACPI_FUJITSU_BL_DEVICE_NAME);
strscpy(acpi_device_class(device), ACPI_FUJITSU_CLASS);
device->driver_data = priv;
pr_info("ACPI: %s [%s]\n" ,
acpi_device_name(device), acpi_device_bid(device));
if (get_max_brightness(device) <= 0 )
priv->max_brightness = FUJITSU_LCD_N_LEVELS;
get_lcd_level(device);
ret = acpi_fujitsu_bl_input_setup(device);
if (ret)
return ret;
return fujitsu_backlight_register(device);
}
/* Brightness notify */
static void acpi_fujitsu_bl_notify(struct acpi_device *device, u32 event)
{
struct fujitsu_bl *priv = acpi_driver_data(device);
int oldb, newb;
if (event != ACPI_FUJITSU_NOTIFY_CODE) {
acpi_handle_info(device->handle, "unsupported event [0x%x]\n" ,
event);
sparse_keymap_report_event(priv->input, -1 , 1 , true );
return ;
}
oldb = priv->brightness_level;
get_lcd_level(device);
newb = priv->brightness_level;
acpi_handle_debug(device->handle,
"brightness button event [%i -> %i]\n" , oldb, newb);
if (oldb == newb)
return ;
if (!disable_brightness_adjust)
set_lcd_level(device, newb);
sparse_keymap_report_event(priv->input, oldb < newb, 1 , true );
}
/* ACPI device for hotkey handling */
static const struct key_entry keymap_default[] = {
{ KE_KEY, KEY1_CODE, { KEY_PROG1 } },
{ KE_KEY, KEY2_CODE, { KEY_PROG2 } },
{ KE_KEY, KEY3_CODE, { KEY_PROG3 } },
{ KE_KEY, KEY4_CODE, { KEY_PROG4 } },
{ KE_KEY, KEY9_CODE, { KEY_RFKILL } },
/* Soft keys read from status flags */
{ KE_KEY, FLAG_RFKILL, { KEY_RFKILL } },
{ KE_KEY, FLAG_TOUCHPAD_TOGGLE, { KEY_TOUCHPAD_TOGGLE } },
{ KE_KEY, FLAG_MICMUTE, { KEY_MICMUTE } },
{ KE_END, 0 }
};
static const struct key_entry keymap_s64x0[] = {
{ KE_KEY, KEY1_CODE, { KEY_SCREENLOCK } }, /* "Lock" */
{ KE_KEY, KEY2_CODE, { KEY_HELP } }, /* "Mobility Center */
{ KE_KEY, KEY3_CODE, { KEY_PROG3 } },
{ KE_KEY, KEY4_CODE, { KEY_PROG4 } },
{ KE_END, 0 }
};
static const struct key_entry keymap_p8010[] = {
{ KE_KEY, KEY1_CODE, { KEY_HELP } }, /* "Support" */
{ KE_KEY, KEY2_CODE, { KEY_PROG2 } },
{ KE_KEY, KEY3_CODE, { KEY_SWITCHVIDEOMODE } }, /* "Presentation" */
{ KE_KEY, KEY4_CODE, { KEY_WWW } }, /* "WWW" */
{ KE_END, 0 }
};
static const struct key_entry keymap_s2110[] = {
{ KE_KEY, KEY1_CODE, { KEY_PROG1 } }, /* "A" */
{ KE_KEY, KEY2_CODE, { KEY_PROG2 } }, /* "B" */
{ KE_KEY, KEY3_CODE, { KEY_WWW } }, /* "Internet" */
{ KE_KEY, KEY4_CODE, { KEY_EMAIL } }, /* "E-mail" */
{ KE_KEY, KEY5_CODE, { KEY_STOPCD } },
{ KE_KEY, KEY6_CODE, { KEY_PLAYPAUSE } },
{ KE_KEY, KEY7_CODE, { KEY_PREVIOUSSONG } },
{ KE_KEY, KEY8_CODE, { KEY_NEXTSONG } },
{ KE_END, 0 }
};
static const struct key_entry *keymap = keymap_default;
static int fujitsu_laptop_dmi_keymap_override(const struct dmi_system_id *id)
{
pr_info("Identified laptop model '%s'\n" , id->ident);
keymap = id->driver_data;
return 1 ;
}
static const struct dmi_system_id fujitsu_laptop_dmi_table[] = {
{
.callback = fujitsu_laptop_dmi_keymap_override,
.ident = "Fujitsu Siemens S6410" ,
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS" ),
DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK S6410" ),
},
.driver_data = (void *)keymap_s64x0
},
{
.callback = fujitsu_laptop_dmi_keymap_override,
.ident = "Fujitsu Siemens S6420" ,
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS" ),
DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK S6420" ),
},
.driver_data = (void *)keymap_s64x0
},
{
.callback = fujitsu_laptop_dmi_keymap_override,
.ident = "Fujitsu LifeBook P8010" ,
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU" ),
DMI_MATCH(DMI_PRODUCT_NAME, "LifeBook P8010" ),
},
.driver_data = (void *)keymap_p8010
},
{
.callback = fujitsu_laptop_dmi_keymap_override,
.ident = "Fujitsu LifeBook S2110" ,
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS" ),
DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK S2110" ),
},
.driver_data = (void *)keymap_s2110
},
{}
};
static int acpi_fujitsu_laptop_input_setup(struct acpi_device *device)
{
struct fujitsu_laptop *priv = acpi_driver_data(device);
int ret;
priv->input = devm_input_allocate_device(&device->dev);
if (!priv->input)
return -ENOMEM;
snprintf(priv->phys, sizeof (priv->phys), "%s/input0" ,
acpi_device_hid(device));
priv->input->name = acpi_device_name(device);
priv->input->phys = priv->phys;
priv->input->id.bustype = BUS_HOST;
dmi_check_system(fujitsu_laptop_dmi_table);
ret = sparse_keymap_setup(priv->input, keymap, NULL);
if (ret)
return ret;
return input_register_device(priv->input);
}
static int fujitsu_laptop_platform_add(struct acpi_device *device)
{
struct fujitsu_laptop *priv = acpi_driver_data(device);
int ret;
priv->pf_device = platform_device_alloc("fujitsu-laptop" , PLATFORM_DEVID_NONE);
if (!priv->pf_device)
return -ENOMEM;
platform_set_drvdata(priv->pf_device, priv);
ret = platform_device_add(priv->pf_device);
if (ret)
goto err_put_platform_device;
ret = sysfs_create_group(&priv->pf_device->dev.kobj,
&fujitsu_pf_attribute_group);
if (ret)
goto err_del_platform_device;
return 0 ;
err_del_platform_device:
platform_device_del(priv->pf_device);
err_put_platform_device:
platform_device_put(priv->pf_device);
return ret;
}
static void fujitsu_laptop_platform_remove(struct acpi_device *device)
{
struct fujitsu_laptop *priv = acpi_driver_data(device);
sysfs_remove_group(&priv->pf_device->dev.kobj,
&fujitsu_pf_attribute_group);
platform_device_unregister(priv->pf_device);
}
static int logolamp_set(struct led_classdev *cdev,
enum led_brightness brightness)
{
struct acpi_device *device = to_acpi_device(cdev->dev->parent);
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(device, FUNC_LEDS, 0 x1, LOGOLAMP_POWERON, poweron);
if (ret < 0 )
return ret;
return call_fext_func(device, FUNC_LEDS, 0 x1, LOGOLAMP_ALWAYS, always);
}
static enum led_brightness logolamp_get(struct led_classdev *cdev)
{
struct acpi_device *device = to_acpi_device(cdev->dev->parent);
int ret;
ret = call_fext_func(device, FUNC_LEDS, 0 x2, LOGOLAMP_ALWAYS, 0 x0);
if (ret == FUNC_LED_ON)
return LED_FULL;
ret = call_fext_func(device, FUNC_LEDS, 0 x2, LOGOLAMP_POWERON, 0 x0);
if (ret == FUNC_LED_ON)
return LED_HALF;
return LED_OFF;
}
static int kblamps_set(struct led_classdev *cdev,
enum led_brightness brightness)
{
struct acpi_device *device = to_acpi_device(cdev->dev->parent);
if (brightness >= LED_FULL)
return call_fext_func(device, FUNC_LEDS, 0 x1, KEYBOARD_LAMPS,
FUNC_LED_ON);
else
return call_fext_func(device, FUNC_LEDS, 0 x1, KEYBOARD_LAMPS,
FUNC_LED_OFF);
}
static enum led_brightness kblamps_get(struct led_classdev *cdev)
{
struct acpi_device *device = to_acpi_device(cdev->dev->parent);
enum led_brightness brightness = LED_OFF;
if (call_fext_func(device,
FUNC_LEDS, 0 x2, KEYBOARD_LAMPS, 0 x0) == FUNC_LED_ON)
brightness = LED_FULL;
return brightness;
}
static int radio_led_set(struct led_classdev *cdev,
enum led_brightness brightness)
{
struct acpi_device *device = to_acpi_device(cdev->dev->parent);
if (brightness >= LED_FULL)
return call_fext_func(device, FUNC_FLAGS, 0 x5, RADIO_LED_ON,
RADIO_LED_ON);
else
return call_fext_func(device, FUNC_FLAGS, 0 x5, RADIO_LED_ON,
0 x0);
}
static enum led_brightness radio_led_get(struct led_classdev *cdev)
{
struct acpi_device *device = to_acpi_device(cdev->dev->parent);
enum led_brightness brightness = LED_OFF;
if (call_fext_func(device, FUNC_FLAGS, 0 x4, 0 x0, 0 x0) & RADIO_LED_ON)
brightness = LED_FULL;
return brightness;
}
static int eco_led_set(struct led_classdev *cdev,
enum led_brightness brightness)
{
struct acpi_device *device = to_acpi_device(cdev->dev->parent);
int curr;
curr = call_fext_func(device, FUNC_LEDS, 0 x2, ECO_LED, 0 x0);
if (brightness >= LED_FULL)
return call_fext_func(device, FUNC_LEDS, 0 x1, ECO_LED,
curr | ECO_LED_ON);
else
return call_fext_func(device, FUNC_LEDS, 0 x1, ECO_LED,
curr & ~ECO_LED_ON);
}
static enum led_brightness eco_led_get(struct led_classdev *cdev)
{
struct acpi_device *device = to_acpi_device(cdev->dev->parent);
enum led_brightness brightness = LED_OFF;
if (call_fext_func(device, FUNC_LEDS, 0 x2, ECO_LED, 0 x0) & ECO_LED_ON)
brightness = LED_FULL;
return brightness;
}
static int acpi_fujitsu_laptop_leds_register(struct acpi_device *device)
{
struct fujitsu_laptop *priv = acpi_driver_data(device);
struct led_classdev *led;
int ret;
if (call_fext_func(device,
FUNC_LEDS, 0 x0, 0 x0, 0 x0) & LOGOLAMP_POWERON) {
led = devm_kzalloc(&device->dev, sizeof (*led), GFP_KERNEL);
if (!led)
return -ENOMEM;
led->name = "fujitsu::logolamp" ;
led->brightness_set_blocking = logolamp_set;
led->brightness_get = logolamp_get;
ret = devm_led_classdev_register(&device->dev, led);
if (ret)
return ret;
}
if ((call_fext_func(device,
FUNC_LEDS, 0 x0, 0 x0, 0 x0) & KEYBOARD_LAMPS) &&
(call_fext_func(device, FUNC_BUTTONS, 0 x0, 0 x0, 0 x0) == 0 x0)) {
led = devm_kzalloc(&device->dev, sizeof (*led), GFP_KERNEL);
if (!led)
return -ENOMEM;
led->name = "fujitsu::kblamps" ;
led->brightness_set_blocking = kblamps_set;
led->brightness_get = kblamps_get;
ret = devm_led_classdev_register(&device->dev, led);
if (ret)
return ret;
}
/*
* Some Fujitsu laptops have a radio toggle button in place of a slide
* switch and all such machines appear to also have an RF LED . Based on
* comparing DSDT tables of four Fujitsu Lifebook models ( E744 , E751 ,
* S7110 , S8420 ; the first one has a radio toggle button , the other
* three have slide switches ) , bit 17 of flags_supported ( the value
* returned by method S000 of ACPI device FUJ02E3 ) seems to indicate
* whether given model has a radio toggle button .
*/
if (priv->flags_supported & BIT(17 )) {
led = devm_kzalloc(&device->dev, sizeof (*led), GFP_KERNEL);
if (!led)
return -ENOMEM;
led->name = "fujitsu::radio_led" ;
led->brightness_set_blocking = radio_led_set;
led->brightness_get = radio_led_get;
led->default_trigger = "rfkill-any" ;
ret = devm_led_classdev_register(&device->dev, led);
if (ret)
return ret;
}
/* 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(device, FUNC_LEDS, 0 x0, 0 x0, 0 x0) & BIT(14 )) &&
(call_fext_func(device,
FUNC_LEDS, 0 x2, ECO_LED, 0 x0) != UNSUPPORTED_CMD)) {
led = devm_kzalloc(&device->dev, sizeof (*led), GFP_KERNEL);
if (!led)
return -ENOMEM;
led->name = "fujitsu::eco_led" ;
led->brightness_set_blocking = eco_led_set;
led->brightness_get = eco_led_get;
ret = devm_led_classdev_register(&device->dev, led);
if (ret)
return ret;
}
return 0 ;
}
static int acpi_fujitsu_laptop_add(struct acpi_device *device)
{
struct fujitsu_laptop *priv;
int ret, i = 0 ;
priv = devm_kzalloc(&device->dev, sizeof (*priv), GFP_KERNEL);
if (!priv)
return -ENOMEM;
WARN_ONCE(fext, "More than one FUJ02E3 ACPI device was found. Driver may not work as intended." );
fext = device;
strscpy(acpi_device_name(device), ACPI_FUJITSU_LAPTOP_DEVICE_NAME);
strscpy(acpi_device_class(device), ACPI_FUJITSU_CLASS);
device->driver_data = priv;
/* kfifo */
spin_lock_init(&priv->fifo_lock);
ret = kfifo_alloc(&priv->fifo, RINGBUFFERSIZE * sizeof (int ),
GFP_KERNEL);
if (ret)
return ret;
pr_info("ACPI: %s [%s]\n" ,
acpi_device_name(device), acpi_device_bid(device));
while (call_fext_func(device, FUNC_BUTTONS, 0 x1, 0 x0, 0 x0) != 0 &&
i++ < MAX_HOTKEY_RINGBUFFER_SIZE)
; /* No action, result is discarded */
acpi_handle_debug(device->handle, "Discarded %i ringbuffer entries\n" ,
i);
priv->flags_supported = call_fext_func(device, FUNC_FLAGS, 0 x0, 0 x0,
0 x0);
/* Make sure our bitmask of supported functions is cleared if the
RFKILL function block is not implemented, like on the S7020. */
if (priv->flags_supported == UNSUPPORTED_CMD)
priv->flags_supported = 0 ;
if (priv->flags_supported)
priv->flags_state = call_fext_func(device, FUNC_FLAGS, 0 x4, 0 x0,
0 x0);
/* Suspect this is a keymap of the application panel, print it */
acpi_handle_info(device->handle, "BTNI: [0x%x]\n" ,
call_fext_func(device, FUNC_BUTTONS, 0 x0, 0 x0, 0 x0));
/* Sync backlight power status */
if (fujitsu_bl && fujitsu_bl->bl_device &&
acpi_video_get_backlight_type() == acpi_backlight_vendor) {
if (call_fext_func(fext, FUNC_BACKLIGHT, 0 x2,
BACKLIGHT_PARAM_POWER, 0 x0) == BACKLIGHT_OFF)
fujitsu_bl->bl_device->props.power = BACKLIGHT_POWER_OFF;
else
fujitsu_bl->bl_device->props.power = BACKLIGHT_POWER_ON;
}
ret = acpi_fujitsu_laptop_input_setup(device);
if (ret)
goto err_free_fifo;
ret = acpi_fujitsu_laptop_leds_register(device);
if (ret)
goto err_free_fifo;
ret = fujitsu_laptop_platform_add(device);
if (ret)
goto err_free_fifo;
ret = fujitsu_battery_charge_control_add(device);
if (ret < 0 )
pr_warn("Unable to register battery charge control: %d\n" , ret);
return 0 ;
err_free_fifo:
kfifo_free(&priv->fifo);
return ret;
}
static void acpi_fujitsu_laptop_remove(struct acpi_device *device)
{
struct fujitsu_laptop *priv = acpi_driver_data(device);
fujitsu_battery_charge_control_remove(device);
fujitsu_laptop_platform_remove(device);
kfifo_free(&priv->fifo);
}
static void acpi_fujitsu_laptop_press(struct acpi_device *device, int scancode)
{
struct fujitsu_laptop *priv = acpi_driver_data(device);
int ret;
ret = kfifo_in_locked(&priv->fifo, (unsigned char *)&scancode,
sizeof (scancode), &priv->fifo_lock);
if (ret != sizeof (scancode)) {
dev_info(&priv->input->dev, "Could not push scancode [0x%x]\n" ,
scancode);
return ;
}
sparse_keymap_report_event(priv->input, scancode, 1 , false );
dev_dbg(&priv->input->dev, "Push scancode into ringbuffer [0x%x]\n" ,
scancode);
}
static void acpi_fujitsu_laptop_release(struct acpi_device *device)
{
struct fujitsu_laptop *priv = acpi_driver_data(device);
int scancode, ret;
while (true ) {
ret = kfifo_out_locked(&priv->fifo, (unsigned char *)&scancode,
sizeof (scancode), &priv->fifo_lock);
if (ret != sizeof (scancode))
return ;
sparse_keymap_report_event(priv->input, scancode, 0 , false );
dev_dbg(&priv->input->dev,
"Pop scancode from ringbuffer [0x%x]\n" , scancode);
}
}
static void acpi_fujitsu_laptop_notify(struct acpi_device *device, u32 event)
{
struct fujitsu_laptop *priv = acpi_driver_data(device);
unsigned long flags;
int scancode, i = 0 ;
unsigned int irb;
if (event != ACPI_FUJITSU_NOTIFY_CODE) {
acpi_handle_info(device->handle, "Unsupported event [0x%x]\n" ,
event);
sparse_keymap_report_event(priv->input, -1 , 1 , true );
return ;
}
if (priv->flags_supported)
priv->flags_state = call_fext_func(device, FUNC_FLAGS, 0 x4, 0 x0,
0 x0);
while ((irb = call_fext_func(device,
FUNC_BUTTONS, 0 x1, 0 x0, 0 x0)) != 0 &&
i++ < MAX_HOTKEY_RINGBUFFER_SIZE) {
scancode = irb & 0 x4ff;
if (sparse_keymap_entry_from_scancode(priv->input, scancode))
acpi_fujitsu_laptop_press(device, scancode);
else if (scancode == 0 )
acpi_fujitsu_laptop_release(device);
else
acpi_handle_info(device->handle,
"Unknown GIRB result [%x]\n" , irb);
}
/*
* First seen on the Skylake - based Lifebook E736 / E746 / E756 ) , the
* touchpad toggle hotkey ( Fn + F4 ) is handled in software . Other models
* have since added additional " soft keys " . These are reported in the
* status flags queried using FUNC_FLAGS .
*/
if (priv->flags_supported & (FLAG_SOFTKEYS)) {
flags = call_fext_func(device, FUNC_FLAGS, 0 x1, 0 x0, 0 x0);
flags &= (FLAG_SOFTKEYS);
for_each_set_bit(i, &flags, BITS_PER_LONG)
sparse_keymap_report_event(priv->input, BIT(i), 1 , true );
}
}
/* 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,
.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;
ret = acpi_bus_register_driver(&acpi_fujitsu_bl_driver);
if (ret)
return ret;
/* Register platform stuff */
ret = platform_driver_register(&fujitsu_pf_driver);
if (ret)
goto err_unregister_acpi;
/* Register laptop driver */
ret = acpi_bus_register_driver(&acpi_fujitsu_laptop_driver);
if (ret)
goto err_unregister_platform_driver;
pr_info("driver " FUJITSU_DRIVER_VERSION " successfully loaded\n" );
return 0 ;
err_unregister_platform_driver:
platform_driver_unregister(&fujitsu_pf_driver);
err_unregister_acpi:
acpi_bus_unregister_driver(&acpi_fujitsu_bl_driver);
return ret;
}
static void __exit fujitsu_cleanup(void )
{
acpi_bus_unregister_driver(&acpi_fujitsu_laptop_driver);
platform_driver_unregister(&fujitsu_pf_driver);
acpi_bus_unregister_driver(&acpi_fujitsu_bl_driver);
pr_info("driver unloaded\n" );
}
module_init(fujitsu_init);
module_exit(fujitsu_cleanup);
module_param(use_alt_lcd_levels, int , 0644 );
MODULE_PARM_DESC(use_alt_lcd_levels, "Interface used for setting LCD brightness level (-1 = auto, 0 = force SBLL, 1 = force SBL2)" );
module_param(disable_brightness_adjust, bool , 0644 );
MODULE_PARM_DESC(disable_brightness_adjust, "Disable LCD brightness adjustment" );
MODULE_AUTHOR("Jonathan Woithe, Peter Gruber, Tony Vroon" );
MODULE_DESCRIPTION("Fujitsu laptop extras support" );
MODULE_VERSION(FUJITSU_DRIVER_VERSION);
MODULE_LICENSE("GPL" );
Messung V0.5 in Prozent C=97 H=97 G=96
¤ Dauer der Verarbeitung: 0.20 Sekunden
(vorverarbeitet am 2026-09-27)
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