diff options
Diffstat (limited to 'drivers/misc/compal-laptop.c')
| -rw-r--r-- | drivers/misc/compal-laptop.c | 406 |
1 files changed, 0 insertions, 406 deletions
diff --git a/drivers/misc/compal-laptop.c b/drivers/misc/compal-laptop.c deleted file mode 100644 index 11003bba10d3..000000000000 --- a/drivers/misc/compal-laptop.c +++ /dev/null @@ -1,406 +0,0 @@ -/*-*-linux-c-*-*/ - -/* - Copyright (C) 2008 Cezary Jackiewicz <cezary.jackiewicz (at) gmail.com> - - based on MSI driver - - 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. - */ - -/* - * comapl-laptop.c - Compal laptop support. - * - * This driver exports a few files in /sys/devices/platform/compal-laptop/: - * - * wlan - wlan subsystem state: contains 0 or 1 (rw) - * - * bluetooth - Bluetooth subsystem state: contains 0 or 1 (rw) - * - * raw - raw value taken from embedded controller register (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/compal-laptop/. - * - * This driver might work on other laptops produced by Compal. 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 FL9x. - */ - -#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 COMPAL_DRIVER_VERSION "0.2.6" - -#define COMPAL_LCD_LEVEL_MAX 8 - -#define COMPAL_EC_COMMAND_WIRELESS 0xBB -#define COMPAL_EC_COMMAND_LCD_LEVEL 0xB9 - -#define KILLSWITCH_MASK 0x10 -#define WLAN_MASK 0x01 -#define BT_MASK 0x02 - -static int force; -module_param(force, bool, 0); -MODULE_PARM_DESC(force, "Force driver load, ignore DMI data"); - -/* Hardware access */ - -static int set_lcd_level(int level) -{ - if (level < 0 || level >= COMPAL_LCD_LEVEL_MAX) - return -EINVAL; - - ec_write(COMPAL_EC_COMMAND_LCD_LEVEL, level); - - return 0; -} - -static int get_lcd_level(void) -{ - u8 result; - - ec_read(COMPAL_EC_COMMAND_LCD_LEVEL, &result); - - return (int) result; -} - -static int set_wlan_state(int state) -{ - u8 result, value; - - ec_read(COMPAL_EC_COMMAND_WIRELESS, &result); - - if ((result & KILLSWITCH_MASK) == 0) - return -EINVAL; - else { - if (state) - value = (u8) (result | WLAN_MASK); - else - value = (u8) (result & ~WLAN_MASK); - ec_write(COMPAL_EC_COMMAND_WIRELESS, value); - } - - return 0; -} - -static int set_bluetooth_state(int state) -{ - u8 result, value; - - ec_read(COMPAL_EC_COMMAND_WIRELESS, &result); - - if ((result & KILLSWITCH_MASK) == 0) - return -EINVAL; - else { - if (state) - value = (u8) (result | BT_MASK); - else - value = (u8) (result & ~BT_MASK); - ec_write(COMPAL_EC_COMMAND_WIRELESS, value); - } - - return 0; -} - -static int get_wireless_state(int *wlan, int *bluetooth) -{ - u8 result; - - ec_read(COMPAL_EC_COMMAND_WIRELESS, &result); - - if (wlan) { - if ((result & KILLSWITCH_MASK) == 0) - *wlan = 0; - else - *wlan = result & WLAN_MASK; - } - - if (bluetooth) { - if ((result & KILLSWITCH_MASK) == 0) - *bluetooth = 0; - else - *bluetooth = (result & BT_MASK) >> 1; - } - - 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 compalbl_ops = { - .get_brightness = bl_get_brightness, - .update_status = bl_update_status, -}; - -static struct backlight_device *compalbl_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_raw(struct device *dev, - struct device_attribute *attr, char *buf) -{ - u8 result; - - ec_read(COMPAL_EC_COMMAND_WIRELESS, &result); - - return sprintf(buf, "%i\n", result); -} - -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 store_wlan_state(struct device *dev, - struct device_attribute *attr, const char *buf, size_t count) -{ - int state, ret; - - if (sscanf(buf, "%i", &state) != 1 || (state < 0 || state > 1)) - return -EINVAL; - - ret = set_wlan_state(state); - if (ret < 0) - return ret; - - return count; -} - -static ssize_t store_bluetooth_state(struct device *dev, - struct device_attribute *attr, const char *buf, size_t count) -{ - int state, ret; - - if (sscanf(buf, "%i", &state) != 1 || (state < 0 || state > 1)) - return -EINVAL; - - ret = set_bluetooth_state(state); - if (ret < 0) - return ret; - - return count; -} - -static DEVICE_ATTR(bluetooth, 0644, show_bluetooth, store_bluetooth_state); -static DEVICE_ATTR(wlan, 0644, show_wlan, store_wlan_state); -static DEVICE_ATTR(raw, 0444, show_raw, NULL); - -static struct attribute *compal_attributes[] = { - &dev_attr_bluetooth.attr, - &dev_attr_wlan.attr, - &dev_attr_raw.attr, - NULL -}; - -static struct attribute_group compal_attribute_group = { - .attrs = compal_attributes -}; - -static struct platform_driver compal_driver = { - .driver = { - .name = "compal-laptop", - .owner = THIS_MODULE, - } -}; - -static struct platform_device *compal_device; - -/* Initialization */ - -static int dmi_check_cb(const struct dmi_system_id *id) -{ - printk(KERN_INFO "compal-laptop: Identified laptop model '%s'.\n", - id->ident); - - return 0; -} - -static struct dmi_system_id __initdata compal_dmi_table[] = { - { - .ident = "FL90/IFL90", - .matches = { - DMI_MATCH(DMI_BOARD_NAME, "IFL90"), - DMI_MATCH(DMI_BOARD_VERSION, "IFT00"), - }, - .callback = dmi_check_cb - }, - { - .ident = "FL90/IFL90", - .matches = { - DMI_MATCH(DMI_BOARD_NAME, "IFL90"), - DMI_MATCH(DMI_BOARD_VERSION, "REFERENCE"), - }, - .callback = dmi_check_cb - }, - { - .ident = "FL91/IFL91", - .matches = { - DMI_MATCH(DMI_BOARD_NAME, "IFL91"), - DMI_MATCH(DMI_BOARD_VERSION, "IFT00"), - }, - .callback = dmi_check_cb - }, - { - .ident = "FL92/JFL92", - .matches = { - DMI_MATCH(DMI_BOARD_NAME, "JFL92"), - DMI_MATCH(DMI_BOARD_VERSION, "IFT00"), - }, - .callback = dmi_check_cb - }, - { - .ident = "FT00/IFT00", - .matches = { - DMI_MATCH(DMI_BOARD_NAME, "IFT00"), - DMI_MATCH(DMI_BOARD_VERSION, "IFT00"), - }, - .callback = dmi_check_cb - }, - { } -}; - -static int __init compal_init(void) -{ - int ret; - - if (acpi_disabled) - return -ENODEV; - - if (!force && !dmi_check_system(compal_dmi_table)) - return -ENODEV; - - /* Register backlight stuff */ - - if (!acpi_video_backlight_support()) { - compalbl_device = backlight_device_register("compal-laptop", NULL, NULL, - &compalbl_ops); - if (IS_ERR(compalbl_device)) - return PTR_ERR(compalbl_device); - - compalbl_device->props.max_brightness = COMPAL_LCD_LEVEL_MAX-1; - } - - ret = platform_driver_register(&compal_driver); - if (ret) - goto fail_backlight; - - /* Register platform stuff */ - - compal_device = platform_device_alloc("compal-laptop", -1); - if (!compal_device) { - ret = -ENOMEM; - goto fail_platform_driver; - } - - ret = platform_device_add(compal_device); - if (ret) - goto fail_platform_device1; - - ret = sysfs_create_group(&compal_device->dev.kobj, - &compal_attribute_group); - if (ret) - goto fail_platform_device2; - - printk(KERN_INFO "compal-laptop: driver "COMPAL_DRIVER_VERSION - " successfully loaded.\n"); - - return 0; - -fail_platform_device2: - - platform_device_del(compal_device); - -fail_platform_device1: - - platform_device_put(compal_device); - -fail_platform_driver: - - platform_driver_unregister(&compal_driver); - -fail_backlight: - - backlight_device_unregister(compalbl_device); - - return ret; -} - -static void __exit compal_cleanup(void) -{ - - sysfs_remove_group(&compal_device->dev.kobj, &compal_attribute_group); - platform_device_unregister(compal_device); - platform_driver_unregister(&compal_driver); - backlight_device_unregister(compalbl_device); - - printk(KERN_INFO "compal-laptop: driver unloaded.\n"); -} - -module_init(compal_init); -module_exit(compal_cleanup); - -MODULE_AUTHOR("Cezary Jackiewicz"); -MODULE_DESCRIPTION("Compal Laptop Support"); -MODULE_VERSION(COMPAL_DRIVER_VERSION); -MODULE_LICENSE("GPL"); - -MODULE_ALIAS("dmi:*:rnIFL90:rvrIFT00:*"); -MODULE_ALIAS("dmi:*:rnIFL90:rvrREFERENCE:*"); -MODULE_ALIAS("dmi:*:rnIFL91:rvrIFT00:*"); -MODULE_ALIAS("dmi:*:rnJFL92:rvrIFT00:*"); -MODULE_ALIAS("dmi:*:rnIFT00:rvrIFT00:*"); |