Pull sony into release branch
This commit is contained in:
Len Brown
commit
9cdd79c9b9
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@ -0,0 +1,106 @@
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|||
Sony Notebook Control Driver (SNC) Readme
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||||
-----------------------------------------
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||||
Copyright (C) 2004- 2005 Stelian Pop <stelian@popies.net>
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Copyright (C) 2007 Mattia Dongili <malattia@linux.it>
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||||
This mini-driver drives the SNC device present in the ACPI BIOS of
|
||||
the Sony Vaio laptops.
|
||||
|
||||
It gives access to some extra laptop functionalities. In its current
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||||
form, this driver let the user set or query the screen brightness
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||||
through the backlight subsystem and remove/apply power to some devices.
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||||
|
||||
Backlight control:
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------------------
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If your laptop model supports it, you will find sysfs files in the
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/sys/class/backlight/sony/
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directory. You will be able to query and set the current screen
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||||
brightness:
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brightness get/set screen brightness (an iteger
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between 0 and 7)
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actual_brightness reading from this file will query the HW
|
||||
to get real brightness value
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max_brightness the maximum brightness value
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Platform specific:
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------------------
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||||
Loading the sony-laptop module will create a
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||||
/sys/devices/platform/sony-laptop/
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||||
directory populated with some files.
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You then read/write integer values from/to those files by using
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standard UNIX tools.
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The files are:
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brightness_default screen brightness which will be set
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when the laptop will be rebooted
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cdpower power on/off the internal CD drive
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audiopower power on/off the internal sound card
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lanpower power on/off the internal ethernet card
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(only in debug mode)
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Note that some files may be missing if they are not supported
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||||
by your particular laptop model.
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|
||||
Example usage:
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||||
# echo "1" > /sys/devices/platform/sony-laptop/brightness_default
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sets the lowest screen brightness for the next and later reboots,
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# echo "8" > /sys/devices/platform/sony-laptop/brightness_default
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sets the highest screen brightness for the next and later reboots,
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# cat /sys/devices/platform/sony-laptop/brightness_default
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retrieves the value.
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# echo "0" > /sys/devices/platform/sony-laptop/audiopower
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powers off the sound card,
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# echo "1" > /sys/devices/platform/sony-laptop/audiopower
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powers on the sound card.
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|
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Development:
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------------
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If you want to help with the development of this driver (and
|
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you are not afraid of any side effects doing strange things with
|
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your ACPI BIOS could have on your laptop), load the driver and
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pass the option 'debug=1'.
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REPEAT: DON'T DO THIS IF YOU DON'T LIKE RISKY BUSINESS.
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In your kernel logs you will find the list of all ACPI methods
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the SNC device has on your laptop. You can see the GCDP/GCDP methods
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used to pwer on/off the CD drive, but there are others.
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I HAVE NO IDEA WHAT THOSE METHODS DO.
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The sony-laptop driver creates, for some of those methods (the most
|
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current ones found on several Vaio models), an entry under
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/sys/devices/platform/sony-laptop, just like the 'cdpower' one.
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You can create other entries corresponding to your own laptop methods by
|
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further editing the source (see the 'sony_acpi_values' table, and add a new
|
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entry to this table with your get/set method names using the
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HANDLE_NAMES macro).
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|
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Your mission, should you accept it, is to try finding out what
|
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those entries are for, by reading/writing random values from/to those
|
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files and find out what is the impact on your laptop.
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Should you find anything interesting, please report it back to me,
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I will not disavow all knowledge of your actions :)
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Bugs/Limitations:
|
||||
-----------------
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* This driver is not based on official documentation from Sony
|
||||
(because there is none), so there is no guarantee this driver
|
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will work at all, or do the right thing. Although this hasn't
|
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happened to me, this driver could do very bad things to your
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laptop, including permanent damage.
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* The sony-laptop and sonypi drivers do not interact at all. In the
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future, sonypi could use sony-laptop to do (part of) its business.
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|
||||
* spicctrl, which is the userspace tool used to communicate with the
|
||||
sonypi driver (through /dev/sonypi) does not try to use the
|
||||
sony-laptop driver. In the future, spicctrl could try sonypi first,
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||||
and if it isn't present, try sony-laptop instead.
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@ -3068,6 +3068,8 @@ S: Maintained
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|||
SONY VAIO CONTROL DEVICE DRIVER
|
||||
P: Stelian Pop
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M: stelian@popies.net
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P: Mattia Dongili
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M: malattia@linux.it
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W: http://popies.net/sonypi/
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||||
S: Maintained
|
||||
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|
|
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@ -107,4 +107,19 @@ config MSI_LAPTOP
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If you have an MSI S270 laptop, say Y or M here.
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config SONY_LAPTOP
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tristate "Sony Laptop Extras"
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depends on X86 && ACPI
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select BACKLIGHT_CLASS_DEVICE
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---help---
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This mini-driver drives the SNC device present in the ACPI BIOS of
|
||||
the Sony Vaio laptops.
|
||||
|
||||
It gives access to some extra laptop functionalities. In its current
|
||||
form, this driver let the user set or query the screen brightness
|
||||
through the backlight subsystem and remove/apply power to some
|
||||
devices.
|
||||
|
||||
Read <file:Documentation/sony-laptop.txt> for more information.
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||||
|
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endmenu
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|
|
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|
@ -11,3 +11,4 @@ obj-$(CONFIG_LKDTM) += lkdtm.o
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obj-$(CONFIG_TIFM_CORE) += tifm_core.o
|
||||
obj-$(CONFIG_TIFM_7XX1) += tifm_7xx1.o
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obj-$(CONFIG_SGI_IOC4) += ioc4.o
|
||||
obj-$(CONFIG_SONY_LAPTOP) += sony-laptop.o
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|
|
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@ -0,0 +1,562 @@
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/*
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* ACPI Sony Notebook Control Driver (SNC)
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||||
*
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||||
* Copyright (C) 2004-2005 Stelian Pop <stelian@popies.net>
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* Copyright (C) 2007 Mattia Dongili <malattia@linux.it>
|
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*
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||||
* Parts of this driver inspired from asus_acpi.c and ibm_acpi.c
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||||
* which are copyrighted by their respective authors.
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*
|
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* This program is free software; you can redistribute it and/or modify
|
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* 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., 675 Mass Ave, Cambridge, MA 02139, USA.
|
||||
*
|
||||
*/
|
||||
|
||||
#include <linux/kernel.h>
|
||||
#include <linux/module.h>
|
||||
#include <linux/moduleparam.h>
|
||||
#include <linux/init.h>
|
||||
#include <linux/types.h>
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||||
#include <linux/backlight.h>
|
||||
#include <linux/platform_device.h>
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||||
#include <linux/err.h>
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||||
#include <acpi/acpi_drivers.h>
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||||
#include <acpi/acpi_bus.h>
|
||||
#include <asm/uaccess.h>
|
||||
|
||||
#define ACPI_SNC_CLASS "sony"
|
||||
#define ACPI_SNC_HID "SNY5001"
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||||
#define ACPI_SNC_DRIVER_NAME "ACPI Sony Notebook Control Driver v0.4"
|
||||
|
||||
/* the device uses 1-based values, while the backlight subsystem uses
|
||||
0-based values */
|
||||
#define SONY_MAX_BRIGHTNESS 8
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||||
|
||||
#define LOG_PFX KERN_WARNING "sony-laptop: "
|
||||
|
||||
MODULE_AUTHOR("Stelian Pop, Mattia Dongili");
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||||
MODULE_DESCRIPTION(ACPI_SNC_DRIVER_NAME);
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||||
MODULE_LICENSE("GPL");
|
||||
|
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static int debug;
|
||||
module_param(debug, int, 0);
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||||
MODULE_PARM_DESC(debug, "set this to 1 (and RTFM) if you want to help "
|
||||
"the development of this driver");
|
||||
|
||||
static ssize_t sony_acpi_show(struct device *, struct device_attribute *,
|
||||
char *);
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||||
static ssize_t sony_acpi_store(struct device *, struct device_attribute *,
|
||||
const char *, size_t);
|
||||
static int boolean_validate(const int, const int);
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static int brightness_default_validate(const int, const int);
|
||||
|
||||
#define SNC_VALIDATE_IN 0
|
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#define SNC_VALIDATE_OUT 1
|
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|
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struct sony_acpi_value {
|
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char *name; /* name of the entry */
|
||||
char **acpiget; /* names of the ACPI get function */
|
||||
char **acpiset; /* names of the ACPI set function */
|
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int (*validate)(const int, const int); /* input/output validation */
|
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int value; /* current setting */
|
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int valid; /* Has ever been set */
|
||||
int debug; /* active only in debug mode ? */
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struct device_attribute devattr; /* sysfs atribute */
|
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};
|
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|
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#define HANDLE_NAMES(_name, _values...) \
|
||||
static char *snc_##_name[] = { _values, NULL }
|
||||
|
||||
#define SONY_ACPI_VALUE(_name, _getters, _setters, _validate, _debug) \
|
||||
{ \
|
||||
.name = __stringify(_name), \
|
||||
.acpiget = _getters, \
|
||||
.acpiset = _setters, \
|
||||
.validate = _validate, \
|
||||
.debug = _debug, \
|
||||
.devattr = __ATTR(_name, 0, sony_acpi_show, sony_acpi_store), \
|
||||
}
|
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|
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#define SONY_ACPI_VALUE_NULL { .name = NULL }
|
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|
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HANDLE_NAMES(fnkey_get, "GHKE");
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|
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HANDLE_NAMES(brightness_def_get, "GPBR");
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HANDLE_NAMES(brightness_def_set, "SPBR");
|
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|
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HANDLE_NAMES(cdpower_get, "GCDP");
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HANDLE_NAMES(cdpower_set, "SCDP", "CDPW");
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|
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HANDLE_NAMES(audiopower_get, "GAZP");
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HANDLE_NAMES(audiopower_set, "AZPW");
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|
||||
HANDLE_NAMES(lanpower_get, "GLNP");
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HANDLE_NAMES(lanpower_set, "LNPW");
|
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|
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HANDLE_NAMES(PID_get, "GPID");
|
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|
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HANDLE_NAMES(CTR_get, "GCTR");
|
||||
HANDLE_NAMES(CTR_set, "SCTR");
|
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|
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HANDLE_NAMES(PCR_get, "GPCR");
|
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HANDLE_NAMES(PCR_set, "SPCR");
|
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|
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HANDLE_NAMES(CMI_get, "GCMI");
|
||||
HANDLE_NAMES(CMI_set, "SCMI");
|
||||
|
||||
static struct sony_acpi_value sony_acpi_values[] = {
|
||||
SONY_ACPI_VALUE(brightness_default, snc_brightness_def_get,
|
||||
snc_brightness_def_set, brightness_default_validate, 0),
|
||||
SONY_ACPI_VALUE(fnkey, snc_fnkey_get, NULL, NULL, 0),
|
||||
SONY_ACPI_VALUE(cdpower, snc_cdpower_get, snc_cdpower_set, boolean_validate, 0),
|
||||
SONY_ACPI_VALUE(audiopower, snc_audiopower_get, snc_audiopower_set,
|
||||
boolean_validate, 0),
|
||||
SONY_ACPI_VALUE(lanpower, snc_lanpower_get, snc_lanpower_set,
|
||||
boolean_validate, 1),
|
||||
/* unknown methods */
|
||||
SONY_ACPI_VALUE(PID, snc_PID_get, NULL, NULL, 1),
|
||||
SONY_ACPI_VALUE(CTR, snc_CTR_get, snc_CTR_set, NULL, 1),
|
||||
SONY_ACPI_VALUE(PCR, snc_PCR_get, snc_PCR_set, NULL, 1),
|
||||
SONY_ACPI_VALUE(CMI, snc_CMI_get, snc_CMI_set, NULL, 1),
|
||||
SONY_ACPI_VALUE_NULL
|
||||
};
|
||||
|
||||
static acpi_handle sony_acpi_handle;
|
||||
static struct acpi_device *sony_acpi_acpi_device = NULL;
|
||||
|
||||
/*
|
||||
* acpi_evaluate_object wrappers
|
||||
*/
|
||||
static int acpi_callgetfunc(acpi_handle handle, char *name, int *result)
|
||||
{
|
||||
struct acpi_buffer output;
|
||||
union acpi_object out_obj;
|
||||
acpi_status status;
|
||||
|
||||
output.length = sizeof(out_obj);
|
||||
output.pointer = &out_obj;
|
||||
|
||||
status = acpi_evaluate_object(handle, name, NULL, &output);
|
||||
if ((status == AE_OK) && (out_obj.type == ACPI_TYPE_INTEGER)) {
|
||||
*result = out_obj.integer.value;
|
||||
return 0;
|
||||
}
|
||||
|
||||
printk(LOG_PFX "acpi_callreadfunc failed\n");
|
||||
|
||||
return -1;
|
||||
}
|
||||
|
||||
static int acpi_callsetfunc(acpi_handle handle, char *name, int value,
|
||||
int *result)
|
||||
{
|
||||
struct acpi_object_list params;
|
||||
union acpi_object in_obj;
|
||||
struct acpi_buffer output;
|
||||
union acpi_object out_obj;
|
||||
acpi_status status;
|
||||
|
||||
params.count = 1;
|
||||
params.pointer = &in_obj;
|
||||
in_obj.type = ACPI_TYPE_INTEGER;
|
||||
in_obj.integer.value = value;
|
||||
|
||||
output.length = sizeof(out_obj);
|
||||
output.pointer = &out_obj;
|
||||
|
||||
status = acpi_evaluate_object(handle, name, ¶ms, &output);
|
||||
if (status == AE_OK) {
|
||||
if (result != NULL) {
|
||||
if (out_obj.type != ACPI_TYPE_INTEGER) {
|
||||
printk(LOG_PFX "acpi_evaluate_object bad "
|
||||
"return type\n");
|
||||
return -1;
|
||||
}
|
||||
*result = out_obj.integer.value;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
printk(LOG_PFX "acpi_evaluate_object failed\n");
|
||||
|
||||
return -1;
|
||||
}
|
||||
|
||||
/*
|
||||
* sony_acpi_values input/output validate functions
|
||||
*/
|
||||
|
||||
/* brightness_default_validate:
|
||||
*
|
||||
* manipulate input output values to keep consistency with the
|
||||
* backlight framework for which brightness values are 0-based.
|
||||
*/
|
||||
static int brightness_default_validate(const int direction, const int value)
|
||||
{
|
||||
switch (direction) {
|
||||
case SNC_VALIDATE_OUT:
|
||||
return value - 1;
|
||||
case SNC_VALIDATE_IN:
|
||||
if (value >= 0 && value < SONY_MAX_BRIGHTNESS)
|
||||
return value + 1;
|
||||
}
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
/* boolean_validate:
|
||||
*
|
||||
* on input validate boolean values 0/1, on output just pass the
|
||||
* received value.
|
||||
*/
|
||||
static int boolean_validate(const int direction, const int value)
|
||||
{
|
||||
if (direction == SNC_VALIDATE_IN) {
|
||||
if (value != 0 && value != 1)
|
||||
return -EINVAL;
|
||||
}
|
||||
return value;
|
||||
}
|
||||
|
||||
/*
|
||||
* Sysfs show/store common to all sony_acpi_values
|
||||
*/
|
||||
static ssize_t sony_acpi_show(struct device *dev, struct device_attribute *attr,
|
||||
char *buffer)
|
||||
{
|
||||
int value;
|
||||
struct sony_acpi_value *item =
|
||||
container_of(attr, struct sony_acpi_value, devattr);
|
||||
|
||||
if (!*item->acpiget)
|
||||
return -EIO;
|
||||
|
||||
if (acpi_callgetfunc(sony_acpi_handle, *item->acpiget, &value) < 0)
|
||||
return -EIO;
|
||||
|
||||
if (item->validate)
|
||||
value = item->validate(SNC_VALIDATE_OUT, value);
|
||||
|
||||
return snprintf(buffer, PAGE_SIZE, "%d\n", value);
|
||||
}
|
||||
|
||||
static ssize_t sony_acpi_store(struct device *dev,
|
||||
struct device_attribute *attr,
|
||||
const char *buffer, size_t count)
|
||||
{
|
||||
int value;
|
||||
struct sony_acpi_value *item =
|
||||
container_of(attr, struct sony_acpi_value, devattr);
|
||||
|
||||
if (!item->acpiset)
|
||||
return -EIO;
|
||||
|
||||
if (count > 31)
|
||||
return -EINVAL;
|
||||
|
||||
value = simple_strtoul(buffer, NULL, 10);
|
||||
|
||||
if (item->validate)
|
||||
value = item->validate(SNC_VALIDATE_IN, value);
|
||||
|
||||
if (value < 0)
|
||||
return value;
|
||||
|
||||
if (acpi_callsetfunc(sony_acpi_handle, *item->acpiset, value, NULL) < 0)
|
||||
return -EIO;
|
||||
item->value = value;
|
||||
item->valid = 1;
|
||||
return count;
|
||||
}
|
||||
|
||||
/*
|
||||
* Platform device
|
||||
*/
|
||||
static struct platform_driver sncpf_driver = {
|
||||
.driver = {
|
||||
.name = "sony-laptop",
|
||||
.owner = THIS_MODULE,
|
||||
}
|
||||
};
|
||||
static struct platform_device *sncpf_device;
|
||||
|
||||
static int sony_snc_pf_add(void)
|
||||
{
|
||||
acpi_handle handle;
|
||||
struct sony_acpi_value *item;
|
||||
int ret = 0;
|
||||
|
||||
ret = platform_driver_register(&sncpf_driver);
|
||||
if (ret)
|
||||
goto out;
|
||||
|
||||
sncpf_device = platform_device_alloc("sony-laptop", -1);
|
||||
if (!sncpf_device) {
|
||||
ret = -ENOMEM;
|
||||
goto out_platform_registered;
|
||||
}
|
||||
|
||||
ret = platform_device_add(sncpf_device);
|
||||
if (ret)
|
||||
goto out_platform_alloced;
|
||||
|
||||
for (item = sony_acpi_values; item->name; ++item) {
|
||||
|
||||
if (!debug && item->debug)
|
||||
continue;
|
||||
|
||||
/* find the available acpiget as described in the DSDT */
|
||||
for (; item->acpiget && *item->acpiget; ++item->acpiget) {
|
||||
if (ACPI_SUCCESS(acpi_get_handle(sony_acpi_handle,
|
||||
*item->acpiget,
|
||||
&handle))) {
|
||||
if (debug)
|
||||
printk(LOG_PFX "Found %s getter: %s\n",
|
||||
item->name, *item->acpiget);
|
||||
item->devattr.attr.mode |= S_IRUGO;
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
/* find the available acpiset as described in the DSDT */
|
||||
for (; item->acpiset && *item->acpiset; ++item->acpiset) {
|
||||
if (ACPI_SUCCESS(acpi_get_handle(sony_acpi_handle,
|
||||
*item->acpiset,
|
||||
&handle))) {
|
||||
if (debug)
|
||||
printk(LOG_PFX "Found %s setter: %s\n",
|
||||
item->name, *item->acpiset);
|
||||
item->devattr.attr.mode |= S_IWUSR;
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
if (item->devattr.attr.mode != 0) {
|
||||
ret =
|
||||
device_create_file(&sncpf_device->dev,
|
||||
&item->devattr);
|
||||
if (ret)
|
||||
goto out_sysfs;
|
||||
}
|
||||
}
|
||||
|
||||
return 0;
|
||||
|
||||
out_sysfs:
|
||||
for (item = sony_acpi_values; item->name; ++item) {
|
||||
device_remove_file(&sncpf_device->dev, &item->devattr);
|
||||
}
|
||||
platform_device_del(sncpf_device);
|
||||
out_platform_alloced:
|
||||
platform_device_put(sncpf_device);
|
||||
out_platform_registered:
|
||||
platform_driver_unregister(&sncpf_driver);
|
||||
out:
|
||||
return ret;
|
||||
}
|
||||
|
||||
static void sony_snc_pf_remove(void)
|
||||
{
|
||||
struct sony_acpi_value *item;
|
||||
|
||||
for (item = sony_acpi_values; item->name; ++item) {
|
||||
device_remove_file(&sncpf_device->dev, &item->devattr);
|
||||
}
|
||||
|
||||
platform_device_del(sncpf_device);
|
||||
platform_device_put(sncpf_device);
|
||||
platform_driver_unregister(&sncpf_driver);
|
||||
}
|
||||
|
||||
/*
|
||||
* Backlight device
|
||||
*/
|
||||
static int sony_backlight_update_status(struct backlight_device *bd)
|
||||
{
|
||||
return acpi_callsetfunc(sony_acpi_handle, "SBRT",
|
||||
bd->props->brightness + 1, NULL);
|
||||
}
|
||||
|
||||
static int sony_backlight_get_brightness(struct backlight_device *bd)
|
||||
{
|
||||
int value;
|
||||
|
||||
if (acpi_callgetfunc(sony_acpi_handle, "GBRT", &value))
|
||||
return 0;
|
||||
/* brightness levels are 1-based, while backlight ones are 0-based */
|
||||
return value - 1;
|
||||
}
|
||||
|
||||
static struct backlight_device *sony_backlight_device;
|
||||
static struct backlight_properties sony_backlight_properties = {
|
||||
.owner = THIS_MODULE,
|
||||
.update_status = sony_backlight_update_status,
|
||||
.get_brightness = sony_backlight_get_brightness,
|
||||
.max_brightness = SONY_MAX_BRIGHTNESS - 1,
|
||||
};
|
||||
|
||||
/*
|
||||
* ACPI callbacks
|
||||
*/
|
||||
static void sony_acpi_notify(acpi_handle handle, u32 event, void *data)
|
||||
{
|
||||
if (debug)
|
||||
printk(LOG_PFX "sony_acpi_notify, event: %d\n", event);
|
||||
acpi_bus_generate_event(sony_acpi_acpi_device, 1, event);
|
||||
}
|
||||
|
||||
static acpi_status sony_walk_callback(acpi_handle handle, u32 level,
|
||||
void *context, void **return_value)
|
||||
{
|
||||
struct acpi_namespace_node *node;
|
||||
union acpi_operand_object *operand;
|
||||
|
||||
node = (struct acpi_namespace_node *)handle;
|
||||
operand = (union acpi_operand_object *)node->object;
|
||||
|
||||
printk(LOG_PFX "method: name: %4.4s, args %X\n", node->name.ascii,
|
||||
(u32) operand->method.param_count);
|
||||
|
||||
return AE_OK;
|
||||
}
|
||||
|
||||
/*
|
||||
* ACPI device
|
||||
*/
|
||||
static int sony_acpi_resume(struct acpi_device *device)
|
||||
{
|
||||
struct sony_acpi_value *item;
|
||||
|
||||
for (item = sony_acpi_values; item->name; item++) {
|
||||
int ret;
|
||||
|
||||
if (!item->valid)
|
||||
continue;
|
||||
ret = acpi_callsetfunc(sony_acpi_handle, *item->acpiset,
|
||||
item->value, NULL);
|
||||
if (ret < 0) {
|
||||
printk("%s: %d\n", __FUNCTION__, ret);
|
||||
break;
|
||||
}
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int sony_acpi_add(struct acpi_device *device)
|
||||
{
|
||||
acpi_status status;
|
||||
int result;
|
||||
acpi_handle handle;
|
||||
|
||||
sony_acpi_acpi_device = device;
|
||||
|
||||
sony_acpi_handle = device->handle;
|
||||
|
||||
if (debug) {
|
||||
status = acpi_walk_namespace(ACPI_TYPE_METHOD, sony_acpi_handle,
|
||||
1, sony_walk_callback, NULL, NULL);
|
||||
if (ACPI_FAILURE(status)) {
|
||||
printk(LOG_PFX "unable to walk acpi resources\n");
|
||||
result = -ENODEV;
|
||||
goto outwalk;
|
||||
}
|
||||
}
|
||||
|
||||
status = acpi_install_notify_handler(sony_acpi_handle,
|
||||
ACPI_DEVICE_NOTIFY,
|
||||
sony_acpi_notify, NULL);
|
||||
if (ACPI_FAILURE(status)) {
|
||||
printk(LOG_PFX "unable to install notify handler\n");
|
||||
result = -ENODEV;
|
||||
goto outwalk;
|
||||
}
|
||||
|
||||
if (ACPI_SUCCESS(acpi_get_handle(sony_acpi_handle, "GBRT", &handle))) {
|
||||
sony_backlight_device = backlight_device_register("sony", NULL,
|
||||
NULL,
|
||||
&sony_backlight_properties);
|
||||
|
||||
if (IS_ERR(sony_backlight_device)) {
|
||||
printk(LOG_PFX "unable to register backlight device\n");
|
||||
sony_backlight_device = NULL;
|
||||
} else
|
||||
sony_backlight_properties.brightness =
|
||||
sony_backlight_get_brightness
|
||||
(sony_backlight_device);
|
||||
}
|
||||
|
||||
if (sony_snc_pf_add())
|
||||
goto outbacklight;
|
||||
|
||||
printk(KERN_INFO ACPI_SNC_DRIVER_NAME " successfully installed\n");
|
||||
|
||||
return 0;
|
||||
|
||||
outbacklight:
|
||||
if (sony_backlight_device)
|
||||
backlight_device_unregister(sony_backlight_device);
|
||||
|
||||
status = acpi_remove_notify_handler(sony_acpi_handle,
|
||||
ACPI_DEVICE_NOTIFY,
|
||||
sony_acpi_notify);
|
||||
if (ACPI_FAILURE(status))
|
||||
printk(LOG_PFX "unable to remove notify handler\n");
|
||||
outwalk:
|
||||
return result;
|
||||
}
|
||||
|
||||
static int sony_acpi_remove(struct acpi_device *device, int type)
|
||||
{
|
||||
acpi_status status;
|
||||
|
||||
if (sony_backlight_device)
|
||||
backlight_device_unregister(sony_backlight_device);
|
||||
|
||||
sony_acpi_acpi_device = NULL;
|
||||
|
||||
status = acpi_remove_notify_handler(sony_acpi_handle,
|
||||
ACPI_DEVICE_NOTIFY,
|
||||
sony_acpi_notify);
|
||||
if (ACPI_FAILURE(status))
|
||||
printk(LOG_PFX "unable to remove notify handler\n");
|
||||
|
||||
sony_snc_pf_remove();
|
||||
|
||||
printk(KERN_INFO ACPI_SNC_DRIVER_NAME " successfully removed\n");
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static struct acpi_driver sony_acpi_driver = {
|
||||
.name = ACPI_SNC_DRIVER_NAME,
|
||||
.class = ACPI_SNC_CLASS,
|
||||
.ids = ACPI_SNC_HID,
|
||||
.ops = {
|
||||
.add = sony_acpi_add,
|
||||
.remove = sony_acpi_remove,
|
||||
.resume = sony_acpi_resume,
|
||||
},
|
||||
};
|
||||
|
||||
static int __init sony_acpi_init(void)
|
||||
{
|
||||
return acpi_bus_register_driver(&sony_acpi_driver);
|
||||
}
|
||||
|
||||
static void __exit sony_acpi_exit(void)
|
||||
{
|
||||
acpi_bus_unregister_driver(&sony_acpi_driver);
|
||||
}
|
||||
|
||||
module_init(sony_acpi_init);
|
||||
module_exit(sony_acpi_exit);
|
||||
Loading…
Reference in New Issue