mirror of https://gitee.com/openkylin/linux.git
435 lines
10 KiB
C
435 lines
10 KiB
C
/*-*-linux-c-*-*/
|
|
|
|
/*
|
|
Copyright (C) 2006 Lennart Poettering <mzxreary (at) 0pointer (dot) de>
|
|
|
|
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.
|
|
*/
|
|
|
|
/*
|
|
* msi-laptop.c - MSI S270 laptop support. This laptop is sold under
|
|
* various brands, including "Cytron/TCM/Medion/Tchibo MD96100".
|
|
*
|
|
* Driver also supports S271, S420 models.
|
|
*
|
|
* This driver exports a few files in /sys/devices/platform/msi-laptop-pf/:
|
|
*
|
|
* lcd_level - Screen brightness: contains a single integer in the
|
|
* range 0..8. (rw)
|
|
*
|
|
* auto_brightness - Enable automatic brightness control: contains
|
|
* either 0 or 1. If set to 1 the hardware adjusts the screen
|
|
* brightness automatically when the power cord is
|
|
* plugged/unplugged. (rw)
|
|
*
|
|
* wlan - WLAN subsystem enabled: contains either 0 or 1. (ro)
|
|
*
|
|
* bluetooth - Bluetooth subsystem enabled: contains either 0 or 1
|
|
* Please note that this file is constantly 0 if no Bluetooth
|
|
* hardware is available. (ro)
|
|
*
|
|
* 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/msi-laptop-bl/.
|
|
*
|
|
* This driver might work on other laptops produced by MSI. If you
|
|
* want to try it you can pass force=1 as argument to the module which
|
|
* will force it to load even when the DMI data doesn't identify the
|
|
* laptop as MSI S270. YMMV.
|
|
*/
|
|
|
|
#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/platform_device.h>
|
|
#include <linux/autoconf.h>
|
|
|
|
#define MSI_DRIVER_VERSION "0.5"
|
|
|
|
#define MSI_LCD_LEVEL_MAX 9
|
|
|
|
#define MSI_EC_COMMAND_WIRELESS 0x10
|
|
#define MSI_EC_COMMAND_LCD_LEVEL 0x11
|
|
|
|
static int force;
|
|
module_param(force, bool, 0);
|
|
MODULE_PARM_DESC(force, "Force driver load, ignore DMI data");
|
|
|
|
static int auto_brightness;
|
|
module_param(auto_brightness, int, 0);
|
|
MODULE_PARM_DESC(auto_brightness, "Enable automatic brightness control (0: disabled; 1: enabled; 2: don't touch)");
|
|
|
|
/* Hardware access */
|
|
|
|
static int set_lcd_level(int level)
|
|
{
|
|
u8 buf[2];
|
|
|
|
if (level < 0 || level >= MSI_LCD_LEVEL_MAX)
|
|
return -EINVAL;
|
|
|
|
buf[0] = 0x80;
|
|
buf[1] = (u8) (level*31);
|
|
|
|
return ec_transaction(MSI_EC_COMMAND_LCD_LEVEL, buf, sizeof(buf), NULL, 0, 1);
|
|
}
|
|
|
|
static int get_lcd_level(void)
|
|
{
|
|
u8 wdata = 0, rdata;
|
|
int result;
|
|
|
|
result = ec_transaction(MSI_EC_COMMAND_LCD_LEVEL, &wdata, 1, &rdata, 1, 1);
|
|
if (result < 0)
|
|
return result;
|
|
|
|
return (int) rdata / 31;
|
|
}
|
|
|
|
static int get_auto_brightness(void)
|
|
{
|
|
u8 wdata = 4, rdata;
|
|
int result;
|
|
|
|
result = ec_transaction(MSI_EC_COMMAND_LCD_LEVEL, &wdata, 1, &rdata, 1, 1);
|
|
if (result < 0)
|
|
return result;
|
|
|
|
return !!(rdata & 8);
|
|
}
|
|
|
|
static int set_auto_brightness(int enable)
|
|
{
|
|
u8 wdata[2], rdata;
|
|
int result;
|
|
|
|
wdata[0] = 4;
|
|
|
|
result = ec_transaction(MSI_EC_COMMAND_LCD_LEVEL, wdata, 1, &rdata, 1, 1);
|
|
if (result < 0)
|
|
return result;
|
|
|
|
wdata[0] = 0x84;
|
|
wdata[1] = (rdata & 0xF7) | (enable ? 8 : 0);
|
|
|
|
return ec_transaction(MSI_EC_COMMAND_LCD_LEVEL, wdata, 2, NULL, 0, 1);
|
|
}
|
|
|
|
static int get_wireless_state(int *wlan, int *bluetooth)
|
|
{
|
|
u8 wdata = 0, rdata;
|
|
int result;
|
|
|
|
result = ec_transaction(MSI_EC_COMMAND_WIRELESS, &wdata, 1, &rdata, 1, 1);
|
|
if (result < 0)
|
|
return -1;
|
|
|
|
if (wlan)
|
|
*wlan = !!(rdata & 8);
|
|
|
|
if (bluetooth)
|
|
*bluetooth = !!(rdata & 128);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Backlight device stuff */
|
|
|
|
static int bl_get_brightness(struct backlight_device *b)
|
|
{
|
|
return get_lcd_level();
|
|
}
|
|
|
|
|
|
static int bl_update_status(struct backlight_device *b)
|
|
{
|
|
return set_lcd_level(b->props.brightness);
|
|
}
|
|
|
|
static struct backlight_ops msibl_ops = {
|
|
.get_brightness = bl_get_brightness,
|
|
.update_status = bl_update_status,
|
|
};
|
|
|
|
static struct backlight_device *msibl_device;
|
|
|
|
/* Platform device */
|
|
|
|
static ssize_t show_wlan(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
|
|
int ret, enabled;
|
|
|
|
ret = get_wireless_state(&enabled, NULL);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
return sprintf(buf, "%i\n", enabled);
|
|
}
|
|
|
|
static ssize_t show_bluetooth(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
|
|
int ret, enabled;
|
|
|
|
ret = get_wireless_state(NULL, &enabled);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
return sprintf(buf, "%i\n", enabled);
|
|
}
|
|
|
|
static ssize_t show_lcd_level(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
|
|
int ret;
|
|
|
|
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 >= MSI_LCD_LEVEL_MAX))
|
|
return -EINVAL;
|
|
|
|
ret = set_lcd_level(level);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
return count;
|
|
}
|
|
|
|
static ssize_t show_auto_brightness(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
|
|
int ret;
|
|
|
|
ret = get_auto_brightness();
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
return sprintf(buf, "%i\n", ret);
|
|
}
|
|
|
|
static ssize_t store_auto_brightness(struct device *dev,
|
|
struct device_attribute *attr, const char *buf, size_t count)
|
|
{
|
|
|
|
int enable, ret;
|
|
|
|
if (sscanf(buf, "%i", &enable) != 1 || (enable != (enable & 1)))
|
|
return -EINVAL;
|
|
|
|
ret = set_auto_brightness(enable);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
return count;
|
|
}
|
|
|
|
static DEVICE_ATTR(lcd_level, 0644, show_lcd_level, store_lcd_level);
|
|
static DEVICE_ATTR(auto_brightness, 0644, show_auto_brightness, store_auto_brightness);
|
|
static DEVICE_ATTR(bluetooth, 0444, show_bluetooth, NULL);
|
|
static DEVICE_ATTR(wlan, 0444, show_wlan, NULL);
|
|
|
|
static struct attribute *msipf_attributes[] = {
|
|
&dev_attr_lcd_level.attr,
|
|
&dev_attr_auto_brightness.attr,
|
|
&dev_attr_bluetooth.attr,
|
|
&dev_attr_wlan.attr,
|
|
NULL
|
|
};
|
|
|
|
static struct attribute_group msipf_attribute_group = {
|
|
.attrs = msipf_attributes
|
|
};
|
|
|
|
static struct platform_driver msipf_driver = {
|
|
.driver = {
|
|
.name = "msi-laptop-pf",
|
|
.owner = THIS_MODULE,
|
|
}
|
|
};
|
|
|
|
static struct platform_device *msipf_device;
|
|
|
|
/* Initialization */
|
|
|
|
static int dmi_check_cb(struct dmi_system_id *id)
|
|
{
|
|
printk("msi-laptop: Identified laptop model '%s'.\n", id->ident);
|
|
return 0;
|
|
}
|
|
|
|
static struct dmi_system_id __initdata msi_dmi_table[] = {
|
|
{
|
|
.ident = "MSI S270",
|
|
.matches = {
|
|
DMI_MATCH(DMI_SYS_VENDOR, "MICRO-STAR INT'L CO.,LTD"),
|
|
DMI_MATCH(DMI_PRODUCT_NAME, "MS-1013"),
|
|
DMI_MATCH(DMI_PRODUCT_VERSION, "0131"),
|
|
DMI_MATCH(DMI_CHASSIS_VENDOR, "MICRO-STAR INT'L CO.,LTD")
|
|
},
|
|
.callback = dmi_check_cb
|
|
},
|
|
{
|
|
.ident = "MSI S271",
|
|
.matches = {
|
|
DMI_MATCH(DMI_SYS_VENDOR, "Micro-Star International"),
|
|
DMI_MATCH(DMI_PRODUCT_NAME, "MS-1058"),
|
|
DMI_MATCH(DMI_PRODUCT_VERSION, "0581"),
|
|
DMI_MATCH(DMI_BOARD_NAME, "MS-1058")
|
|
},
|
|
.callback = dmi_check_cb
|
|
},
|
|
{
|
|
.ident = "MSI S420",
|
|
.matches = {
|
|
DMI_MATCH(DMI_SYS_VENDOR, "Micro-Star International"),
|
|
DMI_MATCH(DMI_PRODUCT_NAME, "MS-1412"),
|
|
DMI_MATCH(DMI_BOARD_VENDOR, "MSI"),
|
|
DMI_MATCH(DMI_BOARD_NAME, "MS-1412")
|
|
},
|
|
.callback = dmi_check_cb
|
|
},
|
|
{
|
|
.ident = "Medion MD96100",
|
|
.matches = {
|
|
DMI_MATCH(DMI_SYS_VENDOR, "NOTEBOOK"),
|
|
DMI_MATCH(DMI_PRODUCT_NAME, "SAM2000"),
|
|
DMI_MATCH(DMI_PRODUCT_VERSION, "0131"),
|
|
DMI_MATCH(DMI_CHASSIS_VENDOR, "MICRO-STAR INT'L CO.,LTD")
|
|
},
|
|
.callback = dmi_check_cb
|
|
},
|
|
{ }
|
|
};
|
|
|
|
static int __init msi_init(void)
|
|
{
|
|
int ret;
|
|
|
|
if (acpi_disabled)
|
|
return -ENODEV;
|
|
|
|
if (!force && !dmi_check_system(msi_dmi_table))
|
|
return -ENODEV;
|
|
|
|
if (auto_brightness < 0 || auto_brightness > 2)
|
|
return -EINVAL;
|
|
|
|
/* Register backlight stuff */
|
|
|
|
msibl_device = backlight_device_register("msi-laptop-bl", NULL, NULL,
|
|
&msibl_ops);
|
|
if (IS_ERR(msibl_device))
|
|
return PTR_ERR(msibl_device);
|
|
|
|
msibl_device->props.max_brightness = MSI_LCD_LEVEL_MAX-1,
|
|
|
|
ret = platform_driver_register(&msipf_driver);
|
|
if (ret)
|
|
goto fail_backlight;
|
|
|
|
/* Register platform stuff */
|
|
|
|
msipf_device = platform_device_alloc("msi-laptop-pf", -1);
|
|
if (!msipf_device) {
|
|
ret = -ENOMEM;
|
|
goto fail_platform_driver;
|
|
}
|
|
|
|
ret = platform_device_add(msipf_device);
|
|
if (ret)
|
|
goto fail_platform_device1;
|
|
|
|
ret = sysfs_create_group(&msipf_device->dev.kobj, &msipf_attribute_group);
|
|
if (ret)
|
|
goto fail_platform_device2;
|
|
|
|
/* Disable automatic brightness control by default because
|
|
* this module was probably loaded to do brightness control in
|
|
* software. */
|
|
|
|
if (auto_brightness != 2)
|
|
set_auto_brightness(auto_brightness);
|
|
|
|
printk(KERN_INFO "msi-laptop: driver "MSI_DRIVER_VERSION" successfully loaded.\n");
|
|
|
|
return 0;
|
|
|
|
fail_platform_device2:
|
|
|
|
platform_device_del(msipf_device);
|
|
|
|
fail_platform_device1:
|
|
|
|
platform_device_put(msipf_device);
|
|
|
|
fail_platform_driver:
|
|
|
|
platform_driver_unregister(&msipf_driver);
|
|
|
|
fail_backlight:
|
|
|
|
backlight_device_unregister(msibl_device);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void __exit msi_cleanup(void)
|
|
{
|
|
|
|
sysfs_remove_group(&msipf_device->dev.kobj, &msipf_attribute_group);
|
|
platform_device_unregister(msipf_device);
|
|
platform_driver_unregister(&msipf_driver);
|
|
backlight_device_unregister(msibl_device);
|
|
|
|
/* Enable automatic brightness control again */
|
|
if (auto_brightness != 2)
|
|
set_auto_brightness(1);
|
|
|
|
printk(KERN_INFO "msi-laptop: driver unloaded.\n");
|
|
}
|
|
|
|
module_init(msi_init);
|
|
module_exit(msi_cleanup);
|
|
|
|
MODULE_AUTHOR("Lennart Poettering");
|
|
MODULE_DESCRIPTION("MSI Laptop Support");
|
|
MODULE_VERSION(MSI_DRIVER_VERSION);
|
|
MODULE_LICENSE("GPL");
|
|
|
|
MODULE_ALIAS("dmi:*:svnMICRO-STARINT'LCO.,LTD:pnMS-1013:pvr0131*:cvnMICRO-STARINT'LCO.,LTD:ct10:*");
|
|
MODULE_ALIAS("dmi:*:svnMicro-StarInternational:pnMS-1058:pvr0581:rvnMSI:rnMS-1058:*:ct10:*");
|
|
MODULE_ALIAS("dmi:*:svnMicro-StarInternational:pnMS-1412:*:rvnMSI:rnMS-1412:*:cvnMICRO-STARINT'LCO.,LTD:ct10:*");
|
|
MODULE_ALIAS("dmi:*:svnNOTEBOOK:pnSAM2000:pvr0131*:cvnMICRO-STARINT'LCO.,LTD:ct10:*");
|