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WSL2-Linux-Kernel/drivers/misc/fujitsu-laptop.c

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27 KiB
C
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/*-*-linux-c-*-*/
/*
Copyright (C) 2007,2008 Jonathan Woithe <jwoithe@physics.adelaide.edu.au>
Copyright (C) 2008 Peter Gruber <nokos@gmx.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 exports a few files in /sys/devices/platform/fujitsu-laptop/;
* others may be added at a later date.
*
* lcd_level - Screen brightness: contains a single integer in the
* range 0..7. (rw)
*
* In addition to these platform device attributes the driver
* registers itself in the Linux backlight control subsystem and is
* available to userspace under /sys/class/backlight/fujitsu-laptop/.
*
* Hotkeys present on certain Fujitsu laptops (eg: the S6xxx series) are
* also supported by this driver.
*
* This driver has been tested on a Fujitsu Lifebook S6410 and S7020. 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.
*
*/
#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/input.h>
#include <linux/kfifo.h>
#include <linux/video_output.h>
#include <linux/platform_device.h>
#define FUJITSU_DRIVER_VERSION "0.4.2"
#define FUJITSU_LCD_N_LEVELS 8
#define ACPI_FUJITSU_CLASS "fujitsu"
#define ACPI_FUJITSU_HID "FUJ02B1"
#define ACPI_FUJITSU_DRIVER_NAME "Fujitsu laptop FUJ02B1 ACPI brightness driver"
#define ACPI_FUJITSU_DEVICE_NAME "Fujitsu FUJ02B1"
#define ACPI_FUJITSU_HOTKEY_HID "FUJ02E3"
#define ACPI_FUJITSU_HOTKEY_DRIVER_NAME "Fujitsu laptop FUJ02E3 ACPI hotkeys driver"
#define ACPI_FUJITSU_HOTKEY_DEVICE_NAME "Fujitsu FUJ02E3"
#define ACPI_FUJITSU_NOTIFY_CODE1 0x80
#define ACPI_VIDEO_NOTIFY_INC_BRIGHTNESS 0x86
#define ACPI_VIDEO_NOTIFY_DEC_BRIGHTNESS 0x87
/* Hotkey details */
#define LOCK_KEY 0x410 /* codes for the keys in the GIRB register */
#define DISPLAY_KEY 0x411 /* keys are mapped to KEY_SCREENLOCK (the key with the key symbol) */
#define ENERGY_KEY 0x412 /* KEY_MEDIA (the key with the laptop symbol, KEY_EMAIL (E key)) */
#define REST_KEY 0x413 /* KEY_SUSPEND (R key) */
#define MAX_HOTKEY_RINGBUFFER_SIZE 100
#define RINGBUFFERSIZE 40
/* Debugging */
#define FUJLAPTOP_LOG ACPI_FUJITSU_HID ": "
#define FUJLAPTOP_ERR KERN_ERR FUJLAPTOP_LOG
#define FUJLAPTOP_NOTICE KERN_NOTICE FUJLAPTOP_LOG
#define FUJLAPTOP_INFO KERN_INFO FUJLAPTOP_LOG
#define FUJLAPTOP_DEBUG KERN_DEBUG FUJLAPTOP_LOG
#define FUJLAPTOP_DBG_ALL 0xffff
#define FUJLAPTOP_DBG_ERROR 0x0001
#define FUJLAPTOP_DBG_WARN 0x0002
#define FUJLAPTOP_DBG_INFO 0x0004
#define FUJLAPTOP_DBG_TRACE 0x0008
#define dbg_printk(a_dbg_level, format, arg...) \
do { if (dbg_level & a_dbg_level) \
printk(FUJLAPTOP_DEBUG "%s: " format, __func__ , ## arg); \
} while (0)
#ifdef CONFIG_FUJITSU_LAPTOP_DEBUG
#define vdbg_printk(a_dbg_level, format, arg...) \
dbg_printk(a_dbg_level, format, ## arg)
#else
#define vdbg_printk(a_dbg_level, format, arg...)
#endif
/* Device controlling the backlight and associated keys */
struct fujitsu_t {
acpi_handle acpi_handle;
struct acpi_device *dev;
struct input_dev *input;
char phys[32];
struct backlight_device *bl_device;
struct platform_device *pf_device;
unsigned int max_brightness;
unsigned int brightness_changed;
unsigned int brightness_level;
};
static struct fujitsu_t *fujitsu;
static int use_alt_lcd_levels = -1;
static int disable_brightness_keys = -1;
static int disable_brightness_adjust = -1;
/* Device used to access other hotkeys on the laptop */
struct fujitsu_hotkey_t {
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;
unsigned int irb; /* info about the pressed buttons */
};
static struct fujitsu_hotkey_t *fujitsu_hotkey;
static void acpi_fujitsu_hotkey_notify(acpi_handle handle, u32 event,
void *data);
#ifdef CONFIG_FUJITSU_LAPTOP_DEBUG
static u32 dbg_level = 0x03;
#endif
static void acpi_fujitsu_notify(acpi_handle handle, u32 event, void *data);
/* Hardware access for LCD brightness control */
static int set_lcd_level(int level)
{
acpi_status status = AE_OK;
union acpi_object arg0 = { ACPI_TYPE_INTEGER };
struct acpi_object_list arg_list = { 1, &arg0 };
acpi_handle handle = NULL;
vdbg_printk(FUJLAPTOP_DBG_TRACE, "set lcd level via SBLL [%d]\n",
level);
if (level < 0 || level >= fujitsu->max_brightness)
return -EINVAL;
if (!fujitsu)
return -EINVAL;
status = acpi_get_handle(fujitsu->acpi_handle, "SBLL", &handle);
if (ACPI_FAILURE(status)) {
vdbg_printk(FUJLAPTOP_DBG_ERROR, "SBLL not present\n");
return -ENODEV;
}
arg0.integer.value = level;
status = acpi_evaluate_object(handle, NULL, &arg_list, NULL);
if (ACPI_FAILURE(status))
return -ENODEV;
return 0;
}
static int set_lcd_level_alt(int level)
{
acpi_status status = AE_OK;
union acpi_object arg0 = { ACPI_TYPE_INTEGER };
struct acpi_object_list arg_list = { 1, &arg0 };
acpi_handle handle = NULL;
vdbg_printk(FUJLAPTOP_DBG_TRACE, "set lcd level via SBL2 [%d]\n",
level);
if (level < 0 || level >= fujitsu->max_brightness)
return -EINVAL;
if (!fujitsu)
return -EINVAL;
status = acpi_get_handle(fujitsu->acpi_handle, "SBL2", &handle);
if (ACPI_FAILURE(status)) {
vdbg_printk(FUJLAPTOP_DBG_ERROR, "SBL2 not present\n");
return -ENODEV;
}
arg0.integer.value = level;
status = acpi_evaluate_object(handle, NULL, &arg_list, NULL);
if (ACPI_FAILURE(status))
return -ENODEV;
return 0;
}
static int get_lcd_level(void)
{
unsigned long state = 0;
acpi_status status = AE_OK;
vdbg_printk(FUJLAPTOP_DBG_TRACE, "get lcd level via GBLL\n");
status =
acpi_evaluate_integer(fujitsu->acpi_handle, "GBLL", NULL, &state);
if (status < 0)
return status;
fujitsu->brightness_level = state & 0x0fffffff;
if (state & 0x80000000)
fujitsu->brightness_changed = 1;
else
fujitsu->brightness_changed = 0;
return fujitsu->brightness_level;
}
static int get_max_brightness(void)
{
unsigned 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->acpi_handle, "RBLL", NULL, &state);
if (status < 0)
return status;
fujitsu->max_brightness = state;
return fujitsu->max_brightness;
}
static int get_lcd_level_alt(void)
{
unsigned long state = 0;
acpi_status status = AE_OK;
vdbg_printk(FUJLAPTOP_DBG_TRACE, "get lcd level via GBLS\n");
status =
acpi_evaluate_integer(fujitsu->acpi_handle, "GBLS", NULL, &state);
if (status < 0)
return status;
fujitsu->brightness_level = state & 0x0fffffff;
if (state & 0x80000000)
fujitsu->brightness_changed = 1;
else
fujitsu->brightness_changed = 0;
return fujitsu->brightness_level;
}
/* Backlight device stuff */
static int bl_get_brightness(struct backlight_device *b)
{
if (use_alt_lcd_levels)
return get_lcd_level_alt();
else
return get_lcd_level();
}
static int bl_update_status(struct backlight_device *b)
{
if (use_alt_lcd_levels)
return set_lcd_level_alt(b->props.brightness);
else
return set_lcd_level(b->props.brightness);
}
static struct backlight_ops fujitsubl_ops = {
.get_brightness = bl_get_brightness,
.update_status = bl_update_status,
};
/* Platform LCD brightness device */
static ssize_t
show_max_brightness(struct device *dev,
struct device_attribute *attr, char *buf)
{
int ret;
ret = get_max_brightness();
if (ret < 0)
return ret;
return sprintf(buf, "%i\n", ret);
}
static ssize_t
show_brightness_changed(struct device *dev,
struct device_attribute *attr, char *buf)
{
int ret;
ret = fujitsu->brightness_changed;
if (ret < 0)
return ret;
return sprintf(buf, "%i\n", ret);
}
static ssize_t show_lcd_level(struct device *dev,
struct device_attribute *attr, char *buf)
{
int ret;
if (use_alt_lcd_levels)
ret = get_lcd_level_alt();
else
ret = get_lcd_level();
if (ret < 0)
return ret;
return sprintf(buf, "%i\n", ret);
}
static ssize_t store_lcd_level(struct device *dev,
struct device_attribute *attr, const char *buf,
size_t count)
{
int level, ret;
if (sscanf(buf, "%i", &level) != 1
|| (level < 0 || level >= fujitsu->max_brightness))
return -EINVAL;
if (use_alt_lcd_levels)
ret = set_lcd_level_alt(level);
else
ret = set_lcd_level(level);
if (ret < 0)
return ret;
if (use_alt_lcd_levels)
ret = get_lcd_level_alt();
else
ret = get_lcd_level();
if (ret < 0)
return ret;
return count;
}
/* Hardware access for hotkey device */
static int get_irb(void)
{
unsigned long state = 0;
acpi_status status = AE_OK;
vdbg_printk(FUJLAPTOP_DBG_TRACE, "Get irb\n");
status =
acpi_evaluate_integer(fujitsu_hotkey->acpi_handle, "GIRB", NULL,
&state);
if (status < 0)
return status;
fujitsu_hotkey->irb = state;
return fujitsu_hotkey->irb;
}
static ssize_t
ignore_store(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
return count;
}
static DEVICE_ATTR(max_brightness, 0444, show_max_brightness, ignore_store);
static DEVICE_ATTR(brightness_changed, 0444, show_brightness_changed,
ignore_store);
static DEVICE_ATTR(lcd_level, 0644, show_lcd_level, store_lcd_level);
static struct attribute *fujitsupf_attributes[] = {
&dev_attr_brightness_changed.attr,
&dev_attr_max_brightness.attr,
&dev_attr_lcd_level.attr,
NULL
};
static struct attribute_group fujitsupf_attribute_group = {
.attrs = fujitsupf_attributes
};
static struct platform_driver fujitsupf_driver = {
.driver = {
.name = "fujitsu-laptop",
.owner = THIS_MODULE,
}
};
static int dmi_check_cb_s6410(const struct dmi_system_id *id)
{
acpi_handle handle;
int have_blnf;
printk(KERN_INFO "fujitsu-laptop: Identified laptop model '%s'.\n",
id->ident);
have_blnf = ACPI_SUCCESS
(acpi_get_handle(NULL, "\\_SB.PCI0.GFX0.LCD.BLNF", &handle));
if (use_alt_lcd_levels == -1) {
vdbg_printk(FUJLAPTOP_DBG_TRACE, "auto-detecting usealt\n");
use_alt_lcd_levels = 1;
}
if (disable_brightness_keys == -1) {
vdbg_printk(FUJLAPTOP_DBG_TRACE,
"auto-detecting disable_keys\n");
disable_brightness_keys = have_blnf ? 1 : 0;
}
if (disable_brightness_adjust == -1) {
vdbg_printk(FUJLAPTOP_DBG_TRACE,
"auto-detecting disable_adjust\n");
disable_brightness_adjust = have_blnf ? 0 : 1;
}
return 0;
}
static struct dmi_system_id __initdata fujitsu_dmi_table[] = {
{
.ident = "Fujitsu Siemens",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK S6410"),
},
.callback = dmi_check_cb_s6410},
{
.ident = "FUJITSU LifeBook P8010",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"),
DMI_MATCH(DMI_PRODUCT_NAME, "LifeBook P8010"),
},
.callback = dmi_check_cb_s6410},
{}
};
/* ACPI device for LCD brightness control */
static int acpi_fujitsu_add(struct acpi_device *device)
{
acpi_status status;
acpi_handle handle;
int result = 0;
int state = 0;
struct input_dev *input;
int error;
if (!device)
return -EINVAL;
fujitsu->acpi_handle = device->handle;
sprintf(acpi_device_name(device), "%s", ACPI_FUJITSU_DEVICE_NAME);
sprintf(acpi_device_class(device), "%s", ACPI_FUJITSU_CLASS);
acpi_driver_data(device) = fujitsu;
status = acpi_install_notify_handler(device->handle,
ACPI_DEVICE_NOTIFY,
acpi_fujitsu_notify, fujitsu);
if (ACPI_FAILURE(status)) {
printk(KERN_ERR "Error installing notify handler\n");
error = -ENODEV;
goto err_stop;
}
fujitsu->input = input = input_allocate_device();
if (!input) {
error = -ENOMEM;
goto err_uninstall_notify;
}
snprintf(fujitsu->phys, sizeof(fujitsu->phys),
"%s/video/input0", acpi_device_hid(device));
input->name = acpi_device_name(device);
input->phys = fujitsu->phys;
input->id.bustype = BUS_HOST;
input->id.product = 0x06;
input->dev.parent = &device->dev;
input->evbit[0] = BIT(EV_KEY);
set_bit(KEY_BRIGHTNESSUP, input->keybit);
set_bit(KEY_BRIGHTNESSDOWN, input->keybit);
set_bit(KEY_UNKNOWN, input->keybit);
error = input_register_device(input);
if (error)
goto err_free_input_dev;
result = acpi_bus_get_power(fujitsu->acpi_handle, &state);
if (result) {
printk(KERN_ERR "Error reading power state\n");
goto end;
}
printk(KERN_INFO PREFIX "%s [%s] (%s)\n",
acpi_device_name(device), acpi_device_bid(device),
!device->power.state ? "on" : "off");
fujitsu->dev = device;
if (ACPI_SUCCESS
(acpi_get_handle(device->handle, METHOD_NAME__INI, &handle))) {
vdbg_printk(FUJLAPTOP_DBG_INFO, "Invoking _INI\n");
if (ACPI_FAILURE
(acpi_evaluate_object
(device->handle, METHOD_NAME__INI, NULL, NULL)))
printk(KERN_ERR "_INI Method failed\n");
}
/* do config (detect defaults) */
dmi_check_system(fujitsu_dmi_table);
use_alt_lcd_levels = use_alt_lcd_levels == 1 ? 1 : 0;
disable_brightness_keys = disable_brightness_keys == 1 ? 1 : 0;
disable_brightness_adjust = disable_brightness_adjust == 1 ? 1 : 0;
vdbg_printk(FUJLAPTOP_DBG_INFO,
"config: [alt interface: %d], [key disable: %d], [adjust disable: %d]\n",
use_alt_lcd_levels, disable_brightness_keys,
disable_brightness_adjust);
if (get_max_brightness() <= 0)
fujitsu->max_brightness = FUJITSU_LCD_N_LEVELS;
if (use_alt_lcd_levels)
get_lcd_level_alt();
else
get_lcd_level();
return result;
end:
err_free_input_dev:
input_free_device(input);
err_uninstall_notify:
acpi_remove_notify_handler(device->handle, ACPI_DEVICE_NOTIFY,
acpi_fujitsu_notify);
err_stop:
return result;
}
static int acpi_fujitsu_remove(struct acpi_device *device, int type)
{
acpi_status status;
struct fujitsu_t *fujitsu = NULL;
if (!device || !acpi_driver_data(device))
return -EINVAL;
fujitsu = acpi_driver_data(device);
status = acpi_remove_notify_handler(fujitsu->acpi_handle,
ACPI_DEVICE_NOTIFY,
acpi_fujitsu_notify);
if (!device || !acpi_driver_data(device))
return -EINVAL;
fujitsu->acpi_handle = NULL;
return 0;
}
/* Brightness notify */
static void acpi_fujitsu_notify(acpi_handle handle, u32 event, void *data)
{
struct input_dev *input;
int keycode;
int oldb, newb;
input = fujitsu->input;
switch (event) {
case ACPI_FUJITSU_NOTIFY_CODE1:
keycode = 0;
oldb = fujitsu->brightness_level;
get_lcd_level(); /* the alt version always yields changed */
newb = fujitsu->brightness_level;
vdbg_printk(FUJLAPTOP_DBG_TRACE,
"brightness button event [%i -> %i (%i)]\n",
oldb, newb, fujitsu->brightness_changed);
if (oldb == newb && fujitsu->brightness_changed) {
keycode = 0;
if (disable_brightness_keys != 1) {
if (oldb == 0) {
acpi_bus_generate_proc_event(fujitsu->
dev,
ACPI_VIDEO_NOTIFY_DEC_BRIGHTNESS,
0);
keycode = KEY_BRIGHTNESSDOWN;
} else if (oldb ==
(fujitsu->max_brightness) - 1) {
acpi_bus_generate_proc_event(fujitsu->
dev,
ACPI_VIDEO_NOTIFY_INC_BRIGHTNESS,
0);
keycode = KEY_BRIGHTNESSUP;
}
}
} else if (oldb < newb) {
if (disable_brightness_adjust != 1) {
if (use_alt_lcd_levels)
set_lcd_level_alt(newb);
else
set_lcd_level(newb);
}
if (disable_brightness_keys != 1) {
acpi_bus_generate_proc_event(fujitsu->dev,
ACPI_VIDEO_NOTIFY_INC_BRIGHTNESS,
0);
keycode = KEY_BRIGHTNESSUP;
}
} else if (oldb > newb) {
if (disable_brightness_adjust != 1) {
if (use_alt_lcd_levels)
set_lcd_level_alt(newb);
else
set_lcd_level(newb);
}
if (disable_brightness_keys != 1) {
acpi_bus_generate_proc_event(fujitsu->dev,
ACPI_VIDEO_NOTIFY_DEC_BRIGHTNESS,
0);
keycode = KEY_BRIGHTNESSDOWN;
}
} else {
keycode = KEY_UNKNOWN;
}
break;
default:
keycode = KEY_UNKNOWN;
vdbg_printk(FUJLAPTOP_DBG_WARN,
"unsupported event [0x%x]\n", event);
break;
}
if (keycode != 0) {
input_report_key(input, keycode, 1);
input_sync(input);
input_report_key(input, keycode, 0);
input_sync(input);
}
return;
}
/* ACPI device for hotkey handling */
static int acpi_fujitsu_hotkey_add(struct acpi_device *device)
{
acpi_status status;
acpi_handle handle;
int result = 0;
int state = 0;
struct input_dev *input;
int error;
int i;
if (!device)
return -EINVAL;
fujitsu_hotkey->acpi_handle = device->handle;
sprintf(acpi_device_name(device), "%s",
ACPI_FUJITSU_HOTKEY_DEVICE_NAME);
sprintf(acpi_device_class(device), "%s", ACPI_FUJITSU_CLASS);
acpi_driver_data(device) = fujitsu_hotkey;
status = acpi_install_notify_handler(device->handle,
ACPI_DEVICE_NOTIFY,
acpi_fujitsu_hotkey_notify,
fujitsu_hotkey);
if (ACPI_FAILURE(status)) {
printk(KERN_ERR "Error installing notify handler\n");
error = -ENODEV;
goto err_stop;
}
/* kfifo */
spin_lock_init(&fujitsu_hotkey->fifo_lock);
fujitsu_hotkey->fifo =
kfifo_alloc(RINGBUFFERSIZE * sizeof(int), GFP_KERNEL,
&fujitsu_hotkey->fifo_lock);
if (IS_ERR(fujitsu_hotkey->fifo)) {
printk(KERN_ERR "kfifo_alloc failed\n");
error = PTR_ERR(fujitsu_hotkey->fifo);
goto err_stop;
}
fujitsu_hotkey->input = input = input_allocate_device();
if (!input) {
error = -ENOMEM;
goto err_uninstall_notify;
}
snprintf(fujitsu_hotkey->phys, sizeof(fujitsu_hotkey->phys),
"%s/video/input0", acpi_device_hid(device));
input->name = acpi_device_name(device);
input->phys = fujitsu_hotkey->phys;
input->id.bustype = BUS_HOST;
input->id.product = 0x06;
input->dev.parent = &device->dev;
input->evbit[0] = BIT(EV_KEY);
set_bit(KEY_SCREENLOCK, input->keybit);
set_bit(KEY_MEDIA, input->keybit);
set_bit(KEY_EMAIL, input->keybit);
set_bit(KEY_SUSPEND, input->keybit);
set_bit(KEY_UNKNOWN, input->keybit);
error = input_register_device(input);
if (error)
goto err_free_input_dev;
result = acpi_bus_get_power(fujitsu_hotkey->acpi_handle, &state);
if (result) {
printk(KERN_ERR "Error reading power state\n");
goto end;
}
printk(KERN_INFO PREFIX "%s [%s] (%s)\n",
acpi_device_name(device), acpi_device_bid(device),
!device->power.state ? "on" : "off");
fujitsu_hotkey->dev = device;
if (ACPI_SUCCESS
(acpi_get_handle(device->handle, METHOD_NAME__INI, &handle))) {
vdbg_printk(FUJLAPTOP_DBG_INFO, "Invoking _INI\n");
if (ACPI_FAILURE
(acpi_evaluate_object
(device->handle, METHOD_NAME__INI, NULL, NULL)))
printk(KERN_ERR "_INI Method failed\n");
}
i = 0; /* Discard hotkey ringbuffer */
while (get_irb() != 0 && (i++) < MAX_HOTKEY_RINGBUFFER_SIZE) ;
vdbg_printk(FUJLAPTOP_DBG_INFO, "Discarded %i ringbuffer entries\n", i);
return result;
end:
err_free_input_dev:
input_free_device(input);
err_uninstall_notify:
acpi_remove_notify_handler(device->handle, ACPI_DEVICE_NOTIFY,
acpi_fujitsu_hotkey_notify);
kfifo_free(fujitsu_hotkey->fifo);
err_stop:
return result;
}
static int acpi_fujitsu_hotkey_remove(struct acpi_device *device, int type)
{
acpi_status status;
struct fujitsu_hotkey_t *fujitsu_hotkey = NULL;
if (!device || !acpi_driver_data(device))
return -EINVAL;
fujitsu_hotkey = acpi_driver_data(device);
status = acpi_remove_notify_handler(fujitsu_hotkey->acpi_handle,
ACPI_DEVICE_NOTIFY,
acpi_fujitsu_hotkey_notify);
fujitsu_hotkey->acpi_handle = NULL;
kfifo_free(fujitsu_hotkey->fifo);
return 0;
}
static void acpi_fujitsu_hotkey_notify(acpi_handle handle, u32 event,
void *data)
{
struct input_dev *input;
int keycode, keycode_r;
unsigned int irb = 1;
int i, status;
input = fujitsu_hotkey->input;
vdbg_printk(FUJLAPTOP_DBG_TRACE, "Hotkey event\n");
switch (event) {
case ACPI_FUJITSU_NOTIFY_CODE1:
i = 0;
while ((irb = get_irb()) != 0
&& (i++) < MAX_HOTKEY_RINGBUFFER_SIZE) {
vdbg_printk(FUJLAPTOP_DBG_TRACE, "GIRB result [%x]\n",
irb);
switch (irb & 0x4ff) {
case LOCK_KEY:
keycode = KEY_SCREENLOCK;
break;
case DISPLAY_KEY:
keycode = KEY_MEDIA;
break;
case ENERGY_KEY:
keycode = KEY_EMAIL;
break;
case REST_KEY:
keycode = KEY_SUSPEND;
break;
case 0:
keycode = 0;
break;
default:
vdbg_printk(FUJLAPTOP_DBG_WARN,
"Unknown GIRB result [%x]\n", irb);
keycode = -1;
break;
}
if (keycode > 0) {
vdbg_printk(FUJLAPTOP_DBG_TRACE,
"Push keycode into ringbuffer [%d]\n",
keycode);
status = kfifo_put(fujitsu_hotkey->fifo,
(unsigned char *)&keycode,
sizeof(keycode));
if (status != sizeof(keycode)) {
vdbg_printk(FUJLAPTOP_DBG_WARN,
"Could not push keycode [0x%x]\n",
keycode);
} else {
input_report_key(input, keycode, 1);
input_sync(input);
}
} else if (keycode == 0) {
while ((status =
kfifo_get
(fujitsu_hotkey->fifo, (unsigned char *)
&keycode_r,
sizeof
(keycode_r))) == sizeof(keycode_r)) {
input_report_key(input, keycode_r, 0);
input_sync(input);
vdbg_printk(FUJLAPTOP_DBG_TRACE,
"Pop keycode from ringbuffer [%d]\n",
keycode_r);
}
}
}
break;
default:
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);
break;
}
return;
}
/* Initialization */
static const struct acpi_device_id fujitsu_device_ids[] = {
{ACPI_FUJITSU_HID, 0},
{"", 0},
};
static struct acpi_driver acpi_fujitsu_driver = {
.name = ACPI_FUJITSU_DRIVER_NAME,
.class = ACPI_FUJITSU_CLASS,
.ids = fujitsu_device_ids,
.ops = {
.add = acpi_fujitsu_add,
.remove = acpi_fujitsu_remove,
},
};
static const struct acpi_device_id fujitsu_hotkey_device_ids[] = {
{ACPI_FUJITSU_HOTKEY_HID, 0},
{"", 0},
};
static struct acpi_driver acpi_fujitsu_hotkey_driver = {
.name = ACPI_FUJITSU_HOTKEY_DRIVER_NAME,
.class = ACPI_FUJITSU_CLASS,
.ids = fujitsu_hotkey_device_ids,
.ops = {
.add = acpi_fujitsu_hotkey_add,
.remove = acpi_fujitsu_hotkey_remove,
},
};
static int __init fujitsu_init(void)
{
int ret, result, max_brightness;
if (acpi_disabled)
return -ENODEV;
fujitsu = kmalloc(sizeof(struct fujitsu_t), GFP_KERNEL);
if (!fujitsu)
return -ENOMEM;
memset(fujitsu, 0, sizeof(struct fujitsu_t));
result = acpi_bus_register_driver(&acpi_fujitsu_driver);
if (result < 0) {
ret = -ENODEV;
goto fail_acpi;
}
/* Register platform stuff */
fujitsu->pf_device = platform_device_alloc("fujitsu-laptop", -1);
if (!fujitsu->pf_device) {
ret = -ENOMEM;
goto fail_platform_driver;
}
ret = platform_device_add(fujitsu->pf_device);
if (ret)
goto fail_platform_device1;
ret =
sysfs_create_group(&fujitsu->pf_device->dev.kobj,
&fujitsupf_attribute_group);
if (ret)
goto fail_platform_device2;
/* Register backlight stuff */
fujitsu->bl_device =
backlight_device_register("fujitsu-laptop", NULL, NULL,
&fujitsubl_ops);
if (IS_ERR(fujitsu->bl_device))
return PTR_ERR(fujitsu->bl_device);
max_brightness = fujitsu->max_brightness;
fujitsu->bl_device->props.max_brightness = max_brightness - 1;
fujitsu->bl_device->props.brightness = fujitsu->brightness_level;
ret = platform_driver_register(&fujitsupf_driver);
if (ret)
goto fail_backlight;
/* Register hotkey driver */
fujitsu_hotkey = kmalloc(sizeof(struct fujitsu_hotkey_t), GFP_KERNEL);
if (!fujitsu_hotkey) {
ret = -ENOMEM;
goto fail_hotkey;
}
memset(fujitsu_hotkey, 0, sizeof(struct fujitsu_hotkey_t));
result = acpi_bus_register_driver(&acpi_fujitsu_hotkey_driver);
if (result < 0) {
ret = -ENODEV;
goto fail_hotkey1;
}
printk(KERN_INFO "fujitsu-laptop: driver " FUJITSU_DRIVER_VERSION
" successfully loaded.\n");
return 0;
fail_hotkey1:
kfree(fujitsu_hotkey);
fail_hotkey:
platform_driver_unregister(&fujitsupf_driver);
fail_backlight:
backlight_device_unregister(fujitsu->bl_device);
fail_platform_device2:
platform_device_del(fujitsu->pf_device);
fail_platform_device1:
platform_device_put(fujitsu->pf_device);
fail_platform_driver:
acpi_bus_unregister_driver(&acpi_fujitsu_driver);
fail_acpi:
kfree(fujitsu);
return ret;
}
static void __exit fujitsu_cleanup(void)
{
sysfs_remove_group(&fujitsu->pf_device->dev.kobj,
&fujitsupf_attribute_group);
platform_device_unregister(fujitsu->pf_device);
platform_driver_unregister(&fujitsupf_driver);
backlight_device_unregister(fujitsu->bl_device);
acpi_bus_unregister_driver(&acpi_fujitsu_driver);
kfree(fujitsu);
acpi_bus_unregister_driver(&acpi_fujitsu_hotkey_driver);
kfree(fujitsu_hotkey);
printk(KERN_INFO "fujitsu-laptop: 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_keys, uint, 0644);
MODULE_PARM_DESC(disable_brightness_keys,
"Disable brightness keys (eg. if they are already handled by the generic ACPI_VIDEO device).");
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");
MODULE_DESCRIPTION("Fujitsu laptop extras support");
MODULE_VERSION(FUJITSU_DRIVER_VERSION);
MODULE_LICENSE("GPL");
MODULE_ALIAS
("dmi:*:svnFUJITSUSIEMENS:*:pvr:rvnFUJITSU:rnFJNB1D3:*:cvrS6410:*");
MODULE_ALIAS
("dmi:*:svnFUJITSU:*:pvr:rvnFUJITSU:rnFJNB19C:*:cvrS7020:*");
static struct pnp_device_id pnp_ids[] = {
{ .id = "FUJ02bf" },
{ .id = "FUJ02B1" },
{ .id = "FUJ02E3" },
{ .id = "" }
};
MODULE_DEVICE_TABLE(pnp, pnp_ids);
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