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linux/drivers/platform/x86/fujitsu-laptop.c

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/*-*-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.
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 <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/acpi.h>
#include <linux/dmi.h>
#include <linux/backlight.h>
#include <linux/fb.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/slab.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_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
/* 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
/* 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 {
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;
static int use_alt_lcd_levels = -1;
static bool disable_brightness_adjust;
/* 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;
};
static struct fujitsu_laptop *fujitsu_laptop;
static struct acpi_device *fext;
#ifdef CONFIG_FUJITSU_LAPTOP_DEBUG
static u32 dbg_level = 0x03;
#endif
/* 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)) {
vdbg_printk(FUJLAPTOP_DBG_ERROR, "Failed to evaluate FUNC\n");
return -ENODEV;
}
vdbg_printk(FUJLAPTOP_DBG_TRACE, "FUNC 0x%x (args 0x%x, 0x%x, 0x%x) returned 0x%x\n",
func, op, feature, state, (int)value);
return value;
}
/* 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;
}
vdbg_printk(FUJLAPTOP_DBG_TRACE, "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)) {
vdbg_printk(FUJLAPTOP_DBG_ERROR, "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;
vdbg_printk(FUJLAPTOP_DBG_TRACE, "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 & 0x0fffffff;
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;
vdbg_printk(FUJLAPTOP_DBG_TRACE, "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 == FB_BLANK_POWERDOWN ? 0 : get_lcd_level(device);
}
static int bl_update_status(struct backlight_device *b)
{
struct acpi_device *device = bl_get_data(b);
if (b->props.power == FB_BLANK_POWERDOWN)
call_fext_func(fext, FUNC_BACKLIGHT, 0x1, 0x4, 0x3);
else
call_fext_func(fext, FUNC_BACKLIGHT, 0x1, 0x4, 0x0);
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)
{
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",
}
};
/* 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 = 0x06;
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 state = 0;
int error;
if (acpi_video_get_backlight_type() != acpi_backlight_vendor)
return -ENODEV;
if (!device)
return -EINVAL;
priv = devm_kzalloc(&device->dev, sizeof(*priv), GFP_KERNEL);
if (!priv)
return -ENOMEM;
fujitsu_bl = priv;
sprintf(acpi_device_name(device), "%s", ACPI_FUJITSU_BL_DEVICE_NAME);
sprintf(acpi_device_class(device), "%s", ACPI_FUJITSU_CLASS);
device->driver_data = priv;
error = acpi_fujitsu_bl_input_setup(device);
if (error)
return error;
error = acpi_bus_update_power(device->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");
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 (get_max_brightness(device) <= 0)
priv->max_brightness = FUJITSU_LCD_N_LEVELS;
get_lcd_level(device);
error = fujitsu_backlight_register(device);
if (error)
return error;
return 0;
}
/* 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_CODE1) {
vdbg_printk(FUJLAPTOP_DBG_WARN,
"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;
vdbg_printk(FUJLAPTOP_DBG_TRACE, "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, KEY5_CODE, { KEY_RFKILL } },
{ KE_KEY, BIT(26), { KEY_TOUCHPAD_TOGGLE } },
{ 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 = 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
},
{}
};
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/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 = 0x06;
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(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 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(fext, FUNC_LEDS, 0x1, LOGOLAMP_POWERON, poweron);
if (ret < 0)
return ret;
return call_fext_func(fext, FUNC_LEDS, 0x1, LOGOLAMP_ALWAYS, always);
}
static enum led_brightness logolamp_get(struct led_classdev *cdev)
{
int ret;
ret = call_fext_func(fext, FUNC_LEDS, 0x2, LOGOLAMP_ALWAYS, 0x0);
if (ret == FUNC_LED_ON)
return LED_FULL;
ret = call_fext_func(fext, FUNC_LEDS, 0x2, LOGOLAMP_POWERON, 0x0);
if (ret == FUNC_LED_ON)
return LED_HALF;
return LED_OFF;
}
static struct led_classdev logolamp_led = {
.name = "fujitsu::logolamp",
.brightness_set_blocking = logolamp_set,
.brightness_get = logolamp_get
};
static int kblamps_set(struct led_classdev *cdev,
enum led_brightness brightness)
{
if (brightness >= LED_FULL)
return call_fext_func(fext, FUNC_LEDS, 0x1, KEYBOARD_LAMPS,
FUNC_LED_ON);
else
return call_fext_func(fext, FUNC_LEDS, 0x1, KEYBOARD_LAMPS,
FUNC_LED_OFF);
}
static enum led_brightness kblamps_get(struct led_classdev *cdev)
{
enum led_brightness brightness = LED_OFF;
if (call_fext_func(fext,
FUNC_LEDS, 0x2, KEYBOARD_LAMPS, 0x0) == FUNC_LED_ON)
brightness = LED_FULL;
return brightness;
}
static struct led_classdev kblamps_led = {
.name = "fujitsu::kblamps",
.brightness_set_blocking = kblamps_set,
.brightness_get = kblamps_get
};
static int radio_led_set(struct led_classdev *cdev,
enum led_brightness brightness)
{
if (brightness >= LED_FULL)
return call_fext_func(fext, FUNC_FLAGS, 0x5, RADIO_LED_ON,
RADIO_LED_ON);
else
return call_fext_func(fext, FUNC_FLAGS, 0x5, RADIO_LED_ON,
0x0);
}
static enum led_brightness radio_led_get(struct led_classdev *cdev)
{
enum led_brightness brightness = LED_OFF;
if (call_fext_func(fext, FUNC_FLAGS, 0x4, 0x0, 0x0) & RADIO_LED_ON)
brightness = LED_FULL;
return brightness;
}
static struct led_classdev radio_led = {
.name = "fujitsu::radio_led",
.brightness_set_blocking = radio_led_set,
.brightness_get = radio_led_get,
.default_trigger = "rfkill-any"
};
static int eco_led_set(struct led_classdev *cdev,
enum led_brightness brightness)
{
int curr;
curr = call_fext_func(fext, FUNC_LEDS, 0x2, ECO_LED, 0x0);
if (brightness >= LED_FULL)
return call_fext_func(fext, FUNC_LEDS, 0x1, ECO_LED,
curr | ECO_LED_ON);
else
return call_fext_func(fext, FUNC_LEDS, 0x1, ECO_LED,
curr & ~ECO_LED_ON);
}
static enum led_brightness eco_led_get(struct led_classdev *cdev)
{
enum led_brightness brightness = LED_OFF;
if (call_fext_func(fext, FUNC_LEDS, 0x2, ECO_LED, 0x0) & ECO_LED_ON)
brightness = LED_FULL;
return brightness;
}
static struct led_classdev eco_led = {
.name = "fujitsu::eco_led",
.brightness_set_blocking = eco_led_set,
.brightness_get = eco_led_get
};
static int acpi_fujitsu_laptop_leds_register(struct acpi_device *device)
{
int result;
if (call_fext_func(fext,
FUNC_LEDS, 0x0, 0x0, 0x0) & LOGOLAMP_POWERON) {
result = devm_led_classdev_register(&device->dev,
&logolamp_led);
if (result)
return result;
}
if ((call_fext_func(fext,
FUNC_LEDS, 0x0, 0x0, 0x0) & KEYBOARD_LAMPS) &&
(call_fext_func(fext, FUNC_BUTTONS, 0x0, 0x0, 0x0) == 0x0)) {
result = devm_led_classdev_register(&device->dev, &kblamps_led);
if (result)
return 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(fext, FUNC_BUTTONS, 0x0, 0x0, 0x0) & BIT(24)) {
result = devm_led_classdev_register(&device->dev, &radio_led);
if (result)
return 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(fext, FUNC_LEDS, 0x0, 0x0, 0x0) & BIT(14)) &&
(call_fext_func(fext,
FUNC_LEDS, 0x2, ECO_LED, 0x0) != UNSUPPORTED_CMD)) {
result = devm_led_classdev_register(&device->dev, &eco_led);
if (result)
return result;
}
return 0;
}
static int acpi_fujitsu_laptop_add(struct acpi_device *device)
{
struct fujitsu_laptop *priv;
int state = 0;
int error;
int i;
if (!device)
return -EINVAL;
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;
fujitsu_laptop = priv;
sprintf(acpi_device_name(device), "%s",
ACPI_FUJITSU_LAPTOP_DEVICE_NAME);
sprintf(acpi_device_class(device), "%s", ACPI_FUJITSU_CLASS);
device->driver_data = priv;
/* 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;
}
error = acpi_fujitsu_laptop_input_setup(device);
if (error)
goto err_free_fifo;
error = acpi_bus_update_power(device->handle, &state);
if (error) {
pr_err("Error reading power state\n");
goto err_free_fifo;
}
pr_info("ACPI: %s [%s] (%s)\n",
acpi_device_name(device), acpi_device_bid(device),
!device->power.state ? "on" : "off");
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(fext, 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(fext, 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(fext, 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(fext,
FUNC_BUTTONS, 0x0, 0x0, 0x0));
/* 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, 0x2, 0x4, 0x0) == 3)
fujitsu_bl->bl_device->props.power = FB_BLANK_POWERDOWN;
else
fujitsu_bl->bl_device->props.power = FB_BLANK_UNBLANK;
}
error = acpi_fujitsu_laptop_leds_register(device);
if (error)
goto err_free_fifo;
error = fujitsu_laptop_platform_add();
if (error)
goto err_free_fifo;
return 0;
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 *priv = acpi_driver_data(device);
fujitsu_laptop_platform_remove();
kfifo_free(&priv->fifo);
return 0;
}
static void acpi_fujitsu_laptop_press(int scancode)
{
struct input_dev *input = fujitsu_laptop->input;
int status;
status = kfifo_in_locked(&fujitsu_laptop->fifo,
(unsigned char *)&scancode, sizeof(scancode),
&fujitsu_laptop->fifo_lock);
if (status != sizeof(scancode)) {
vdbg_printk(FUJLAPTOP_DBG_WARN,
"Could not push scancode [0x%x]\n", scancode);
return;
}
sparse_keymap_report_event(input, scancode, 1, false);
vdbg_printk(FUJLAPTOP_DBG_TRACE,
"Push scancode into ringbuffer [0x%x]\n", scancode);
}
static void acpi_fujitsu_laptop_release(void)
{
struct input_dev *input = fujitsu_laptop->input;
int scancode, status;
while (true) {
status = kfifo_out_locked(&fujitsu_laptop->fifo,
(unsigned char *)&scancode,
sizeof(scancode),
&fujitsu_laptop->fifo_lock);
if (status != sizeof(scancode))
return;
sparse_keymap_report_event(input, scancode, 0, false);
vdbg_printk(FUJLAPTOP_DBG_TRACE,
"Pop scancode from ringbuffer [0x%x]\n", scancode);
}
}
static void acpi_fujitsu_laptop_notify(struct acpi_device *device, u32 event)
{
struct input_dev *input;
int scancode, i = 0;
unsigned int irb;
input = fujitsu_laptop->input;
if (event != ACPI_FUJITSU_NOTIFY_CODE1) {
vdbg_printk(FUJLAPTOP_DBG_WARN,
"Unsupported event [0x%x]\n", event);
sparse_keymap_report_event(input, -1, 1, true);
return;
}
if (fujitsu_laptop->flags_supported)
fujitsu_laptop->flags_state =
call_fext_func(fext, FUNC_FLAGS, 0x4, 0x0, 0x0);
while ((irb = call_fext_func(fext,
FUNC_BUTTONS, 0x1, 0x0, 0x0)) != 0 &&
i++ < MAX_HOTKEY_RINGBUFFER_SIZE) {
scancode = irb & 0x4ff;
if (sparse_keymap_entry_from_scancode(input, scancode))
acpi_fujitsu_laptop_press(scancode);
else if (scancode == 0)
acpi_fujitsu_laptop_release();
else
vdbg_printk(FUJLAPTOP_DBG_WARN,
"Unknown GIRB result [%x]\n", irb);
}
/* 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(fext, FUNC_FLAGS, 0x1, 0x0, 0x0) & BIT(26)))
sparse_keymap_report_event(input, BIT(26), 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;
if (acpi_disabled)
return -ENODEV;
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");
#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");
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