407 строки
8.7 KiB
C
407 строки
8.7 KiB
C
/*-*-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:*");
|