/*-*-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.
*
* The driver registers itself with the rfkill subsystem and
* the Linux backlight control subsystem.
*
* 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/rfkill.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 struct rfkill *wifi_rfkill;
static struct rfkill *bt_rfkill;
static struct platform_device *compal_device;
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 compal_rfkill_set(void *data, bool blocked)
{
unsigned long radio = (unsigned long) data;
u8 result, value;
ec_read(COMPAL_EC_COMMAND_WIRELESS, &result);
if (!blocked)
value = (u8) (result | radio);
else
value = (u8) (result & ~radio);
ec_write(COMPAL_EC_COMMAND_WIRELESS, value);
return 0;
}
static void compal_rfkill_poll(struct rfkill *rfkill, void *data)
{
u8 result;
bool hw_blocked;
ec_read(COMPAL_EC_COMMAND_WIRELESS, &result);
hw_blocked = !(result & KILLSWITCH_MASK);
rfkill_set_hw_state(rfkill, hw_blocked);
}
static const struct rfkill_ops compal_rfkill_ops = {
.poll = compal_rfkill_poll,
.set_block = compal_rfkill_set,
};
static int setup_rfkill(void)
{
int ret;
wifi_rfkill = rfkill_alloc("compal-wifi", &compal_device->dev,
RFKILL_TYPE_WLAN, &compal_rfkill_ops,
(void *) WLAN_MASK);
if (!wifi_rfkill)
return -ENOMEM;
ret = rfkill_register(wifi_rfkill);
if (ret)
goto err_wifi;
bt_rfkill = rfkill_alloc("compal-bluetooth", &compal_device->dev,
RFKILL_TYPE_BLUETOOTH, &compal_rfkill_ops,
(void *) BT_MASK);
if (!bt_rfkill) {
ret = -ENOMEM;
goto err_allocate_bt;
}
ret = rfkill_register(bt_rfkill);
if (ret)
goto err_register_bt;
return 0;
err_register_bt:
rfkill_destroy(bt_rfkill);
err_allocate_bt:
rfkill_unregister(wifi_rfkill);
err_wifi:
rfkill_destroy(wifi_rfkill);
return ret;
}
/* 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;
static struct platform_driver compal_driver = {
.driver = {
.name = "compal-laptop",
.owner = THIS_MODULE,
}
};
/* 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
},
{
.ident = "Dell Mini 9",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 910"),
},
.callback = dmi_check_cb
},
{
.ident = "Dell Mini 10",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1010"),
},
.callback = dmi_check_cb
},
{
.ident = "Dell Mini 10v",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1011"),
},
.callback = dmi_check_cb
},
{
.ident = "Dell Inspiron 11z",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1110"),
},
.callback = dmi_check_cb
},
{
.ident = "Dell Mini 12",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1210"),
},
.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()) {
struct backlight_properties props;
memset(&props, 0, sizeof(struct backlight_properties));
props.max_brightness = COMPAL_LCD_LEVEL_MAX - 1;
compalbl_device = backlight_device_register("compal-laptop",
NULL, NULL,
&compalbl_ops,
&props);
if (IS_ERR(compalbl_device))
return PTR_ERR(compalbl_device);
}
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_device;
ret = setup_rfkill();
if (ret)
goto fail_rfkill;
printk(KERN_INFO "compal-laptop: driver "COMPAL_DRIVER_VERSION
" successfully loaded.\n");
return 0;
fail_rfkill:
platform_device_del(compal_device);
fail_platform_device:
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)
{
platform_device_unregister(compal_device);
platform_driver_unregister(&compal_driver);
backlight_device_unregister(compalbl_device);
rfkill_unregister(wifi_rfkill);
rfkill_destroy(wifi_rfkill);
rfkill_unregister(bt_rfkill);
rfkill_destroy(bt_rfkill);
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:*");
MODULE_ALIAS("dmi:*:svnDellInc.:pnInspiron910:*");
MODULE_ALIAS("dmi:*:svnDellInc.:pnInspiron1010:*");
MODULE_ALIAS("dmi:*:svnDellInc.:pnInspiron1011:*");
MODULE_ALIAS("dmi:*:svnDellInc.:pnInspiron1110:*");
MODULE_ALIAS("dmi:*:svnDellInc.:pnInspiron1210:*");
