diff options
Diffstat (limited to 'drivers/misc/msi-laptop.c')
| -rw-r--r-- | drivers/misc/msi-laptop.c | 437 |
1 files changed, 0 insertions, 437 deletions
diff --git a/drivers/misc/msi-laptop.c b/drivers/misc/msi-laptop.c deleted file mode 100644 index 759763d18e4c..000000000000 --- a/drivers/misc/msi-laptop.c +++ /dev/null @@ -1,437 +0,0 @@ -/*-*-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> - -#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(const 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 */ - - if (acpi_video_backlight_support()) { - printk(KERN_INFO "MSI: Brightness ignored, must be controlled " - "by ACPI video driver\n"); - } else { - 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:*"); |