+++ /dev/null
-/*
- * asus_acpi.c - Asus Laptop ACPI Extras
- *
- *
- * Copyright (C) 2002-2005 Julien Lerouge, 2003-2006 Karol Kozimor
- *
- * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- *
- *
- * The development page for this driver is located at
- * http://sourceforge.net/projects/acpi4asus/
- *
- * Credits:
- * Pontus Fuchs - Helper functions, cleanup
- * Johann Wiesner - Small compile fixes
- * John Belmonte - ACPI code for Toshiba laptop was a good starting point.
- * �ic Burghard - LED display support for W1N
- *
- */
-
-#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
-
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/slab.h>
-#include <linux/init.h>
-#include <linux/types.h>
-#include <linux/proc_fs.h>
-#include <linux/seq_file.h>
-#include <linux/backlight.h>
-#include <acpi/acpi_drivers.h>
-#include <acpi/acpi_bus.h>
-#include <asm/uaccess.h>
-
-#define ASUS_ACPI_VERSION "0.30"
-
-#define PROC_ASUS "asus" /* The directory */
-#define PROC_MLED "mled"
-#define PROC_WLED "wled"
-#define PROC_TLED "tled"
-#define PROC_BT "bluetooth"
-#define PROC_LEDD "ledd"
-#define PROC_INFO "info"
-#define PROC_LCD "lcd"
-#define PROC_BRN "brn"
-#define PROC_DISP "disp"
-
-#define ACPI_HOTK_NAME "Asus Laptop ACPI Extras Driver"
-#define ACPI_HOTK_CLASS "hotkey"
-#define ACPI_HOTK_DEVICE_NAME "Hotkey"
-
-/*
- * Some events we use, same for all Asus
- */
-#define BR_UP 0x10
-#define BR_DOWN 0x20
-
-/*
- * Flags for hotk status
- */
-#define MLED_ON 0x01 /* Mail LED */
-#define WLED_ON 0x02 /* Wireless LED */
-#define TLED_ON 0x04 /* Touchpad LED */
-#define BT_ON 0x08 /* Internal Bluetooth */
-
-MODULE_AUTHOR("Julien Lerouge, Karol Kozimor");
-MODULE_DESCRIPTION(ACPI_HOTK_NAME);
-MODULE_LICENSE("GPL");
-
-static uid_t asus_uid;
-static gid_t asus_gid;
-module_param(asus_uid, uint, 0);
-MODULE_PARM_DESC(asus_uid, "UID for entries in /proc/acpi/asus");
-module_param(asus_gid, uint, 0);
-MODULE_PARM_DESC(asus_gid, "GID for entries in /proc/acpi/asus");
-
-/* For each model, all features implemented,
- * those marked with R are relative to HOTK, A for absolute */
-struct model_data {
- char *name; /* name of the laptop________________A */
- char *mt_mled; /* method to handle mled_____________R */
- char *mled_status; /* node to handle mled reading_______A */
- char *mt_wled; /* method to handle wled_____________R */
- char *wled_status; /* node to handle wled reading_______A */
- char *mt_tled; /* method to handle tled_____________R */
- char *tled_status; /* node to handle tled reading_______A */
- char *mt_ledd; /* method to handle LED display______R */
- char *mt_bt_switch; /* method to switch Bluetooth on/off_R */
- char *bt_status; /* no model currently supports this__? */
- char *mt_lcd_switch; /* method to turn LCD on/off_________A */
- char *lcd_status; /* node to read LCD panel state______A */
- char *brightness_up; /* method to set brightness up_______A */
- char *brightness_down; /* method to set brightness down ____A */
- char *brightness_set; /* method to set absolute brightness_R */
- char *brightness_get; /* method to get absolute brightness_R */
- char *brightness_status;/* node to get brightness____________A */
- char *display_set; /* method to set video output________R */
- char *display_get; /* method to get video output________R */
-};
-
-/*
- * This is the main structure, we can use it to store anything interesting
- * about the hotk device
- */
-struct asus_hotk {
- struct acpi_device *device; /* the device we are in */
- acpi_handle handle; /* the handle of the hotk device */
- char status; /* status of the hotk, for LEDs */
- u32 ledd_status; /* status of the LED display */
- struct model_data *methods; /* methods available on the laptop */
- u8 brightness; /* brightness level */
- enum {
- A1x = 0, /* A1340D, A1300F */
- A2x, /* A2500H */
- A4G, /* A4700G */
- D1x, /* D1 */
- L2D, /* L2000D */
- L3C, /* L3800C */
- L3D, /* L3400D */
- L3H, /* L3H, L2000E, L5D */
- L4R, /* L4500R */
- L5x, /* L5800C */
- L8L, /* L8400L */
- M1A, /* M1300A */
- M2E, /* M2400E, L4400L */
- M6N, /* M6800N, W3400N */
- M6R, /* M6700R, A3000G */
- P30, /* Samsung P30 */
- S1x, /* S1300A, but also L1400B and M2400A (L84F) */
- S2x, /* S200 (J1 reported), Victor MP-XP7210 */
- W1N, /* W1000N */
- W5A, /* W5A */
- W3V, /* W3030V */
- xxN, /* M2400N, M3700N, M5200N, M6800N,
- S1300N, S5200N*/
- A4S, /* Z81sp */
- F3Sa, /* (Centrino) */
- R1F,
- END_MODEL
- } model; /* Models currently supported */
- u16 event_count[128]; /* Count for each event TODO make this better */
-};
-
-/* Here we go */
-#define A1x_PREFIX "\\_SB.PCI0.ISA.EC0."
-#define L3C_PREFIX "\\_SB.PCI0.PX40.ECD0."
-#define M1A_PREFIX "\\_SB.PCI0.PX40.EC0."
-#define P30_PREFIX "\\_SB.PCI0.LPCB.EC0."
-#define S1x_PREFIX "\\_SB.PCI0.PX40."
-#define S2x_PREFIX A1x_PREFIX
-#define xxN_PREFIX "\\_SB.PCI0.SBRG.EC0."
-
-static struct model_data model_conf[END_MODEL] = {
- /*
- * TODO I have seen a SWBX and AIBX method on some models, like L1400B,
- * it seems to be a kind of switch, but what for ?
- */
-
- {
- .name = "A1x",
- .mt_mled = "MLED",
- .mled_status = "\\MAIL",
- .mt_lcd_switch = A1x_PREFIX "_Q10",
- .lcd_status = "\\BKLI",
- .brightness_up = A1x_PREFIX "_Q0E",
- .brightness_down = A1x_PREFIX "_Q0F"},
-
- {
- .name = "A2x",
- .mt_mled = "MLED",
- .mt_wled = "WLED",
- .wled_status = "\\SG66",
- .mt_lcd_switch = "\\Q10",
- .lcd_status = "\\BAOF",
- .brightness_set = "SPLV",
- .brightness_get = "GPLV",
- .display_set = "SDSP",
- .display_get = "\\INFB"},
-
- {
- .name = "A4G",
- .mt_mled = "MLED",
-/* WLED present, but not controlled by ACPI */
- .mt_lcd_switch = xxN_PREFIX "_Q10",
- .brightness_set = "SPLV",
- .brightness_get = "GPLV",
- .display_set = "SDSP",
- .display_get = "\\ADVG"},
-
- {
- .name = "D1x",
- .mt_mled = "MLED",
- .mt_lcd_switch = "\\Q0D",
- .lcd_status = "\\GP11",
- .brightness_up = "\\Q0C",
- .brightness_down = "\\Q0B",
- .brightness_status = "\\BLVL",
- .display_set = "SDSP",
- .display_get = "\\INFB"},
-
- {
- .name = "L2D",
- .mt_mled = "MLED",
- .mled_status = "\\SGP6",
- .mt_wled = "WLED",
- .wled_status = "\\RCP3",
- .mt_lcd_switch = "\\Q10",
- .lcd_status = "\\SGP0",
- .brightness_up = "\\Q0E",
- .brightness_down = "\\Q0F",
- .display_set = "SDSP",
- .display_get = "\\INFB"},
-
- {
- .name = "L3C",
- .mt_mled = "MLED",
- .mt_wled = "WLED",
- .mt_lcd_switch = L3C_PREFIX "_Q10",
- .lcd_status = "\\GL32",
- .brightness_set = "SPLV",
- .brightness_get = "GPLV",
- .display_set = "SDSP",
- .display_get = "\\_SB.PCI0.PCI1.VGAC.NMAP"},
-
- {
- .name = "L3D",
- .mt_mled = "MLED",
- .mled_status = "\\MALD",
- .mt_wled = "WLED",
- .mt_lcd_switch = "\\Q10",
- .lcd_status = "\\BKLG",
- .brightness_set = "SPLV",
- .brightness_get = "GPLV",
- .display_set = "SDSP",
- .display_get = "\\INFB"},
-
- {
- .name = "L3H",
- .mt_mled = "MLED",
- .mt_wled = "WLED",
- .mt_lcd_switch = "EHK",
- .lcd_status = "\\_SB.PCI0.PM.PBC",
- .brightness_set = "SPLV",
- .brightness_get = "GPLV",
- .display_set = "SDSP",
- .display_get = "\\INFB"},
-
- {
- .name = "L4R",
- .mt_mled = "MLED",
- .mt_wled = "WLED",
- .wled_status = "\\_SB.PCI0.SBRG.SG13",
- .mt_lcd_switch = xxN_PREFIX "_Q10",
- .lcd_status = "\\_SB.PCI0.SBSM.SEO4",
- .brightness_set = "SPLV",
- .brightness_get = "GPLV",
- .display_set = "SDSP",
- .display_get = "\\_SB.PCI0.P0P1.VGA.GETD"},
-
- {
- .name = "L5x",
- .mt_mled = "MLED",
-/* WLED present, but not controlled by ACPI */
- .mt_tled = "TLED",
- .mt_lcd_switch = "\\Q0D",
- .lcd_status = "\\BAOF",
- .brightness_set = "SPLV",
- .brightness_get = "GPLV",
- .display_set = "SDSP",
- .display_get = "\\INFB"},
-
- {
- .name = "L8L"
-/* No features, but at least support the hotkeys */
- },
-
- {
- .name = "M1A",
- .mt_mled = "MLED",
- .mt_lcd_switch = M1A_PREFIX "Q10",
- .lcd_status = "\\PNOF",
- .brightness_up = M1A_PREFIX "Q0E",
- .brightness_down = M1A_PREFIX "Q0F",
- .brightness_status = "\\BRIT",
- .display_set = "SDSP",
- .display_get = "\\INFB"},
-
- {
- .name = "M2E",
- .mt_mled = "MLED",
- .mt_wled = "WLED",
- .mt_lcd_switch = "\\Q10",
- .lcd_status = "\\GP06",
- .brightness_set = "SPLV",
- .brightness_get = "GPLV",
- .display_set = "SDSP",
- .display_get = "\\INFB"},
-
- {
- .name = "M6N",
- .mt_mled = "MLED",
- .mt_wled = "WLED",
- .wled_status = "\\_SB.PCI0.SBRG.SG13",
- .mt_lcd_switch = xxN_PREFIX "_Q10",
- .lcd_status = "\\_SB.BKLT",
- .brightness_set = "SPLV",
- .brightness_get = "GPLV",
- .display_set = "SDSP",
- .display_get = "\\SSTE"},
-
- {
- .name = "M6R",
- .mt_mled = "MLED",
- .mt_wled = "WLED",
- .mt_lcd_switch = xxN_PREFIX "_Q10",
- .lcd_status = "\\_SB.PCI0.SBSM.SEO4",
- .brightness_set = "SPLV",
- .brightness_get = "GPLV",
- .display_set = "SDSP",
- .display_get = "\\_SB.PCI0.P0P1.VGA.GETD"},
-
- {
- .name = "P30",
- .mt_wled = "WLED",
- .mt_lcd_switch = P30_PREFIX "_Q0E",
- .lcd_status = "\\BKLT",
- .brightness_up = P30_PREFIX "_Q68",
- .brightness_down = P30_PREFIX "_Q69",
- .brightness_get = "GPLV",
- .display_set = "SDSP",
- .display_get = "\\DNXT"},
-
- {
- .name = "S1x",
- .mt_mled = "MLED",
- .mled_status = "\\EMLE",
- .mt_wled = "WLED",
- .mt_lcd_switch = S1x_PREFIX "Q10",
- .lcd_status = "\\PNOF",
- .brightness_set = "SPLV",
- .brightness_get = "GPLV"},
-
- {
- .name = "S2x",
- .mt_mled = "MLED",
- .mled_status = "\\MAIL",
- .mt_lcd_switch = S2x_PREFIX "_Q10",
- .lcd_status = "\\BKLI",
- .brightness_up = S2x_PREFIX "_Q0B",
- .brightness_down = S2x_PREFIX "_Q0A"},
-
- {
- .name = "W1N",
- .mt_mled = "MLED",
- .mt_wled = "WLED",
- .mt_ledd = "SLCM",
- .mt_lcd_switch = xxN_PREFIX "_Q10",
- .lcd_status = "\\BKLT",
- .brightness_set = "SPLV",
- .brightness_get = "GPLV",
- .display_set = "SDSP",
- .display_get = "\\ADVG"},
-
- {
- .name = "W5A",
- .mt_bt_switch = "BLED",
- .mt_wled = "WLED",
- .mt_lcd_switch = xxN_PREFIX "_Q10",
- .brightness_set = "SPLV",
- .brightness_get = "GPLV",
- .display_set = "SDSP",
- .display_get = "\\ADVG"},
-
- {
- .name = "W3V",
- .mt_mled = "MLED",
- .mt_wled = "WLED",
- .mt_lcd_switch = xxN_PREFIX "_Q10",
- .lcd_status = "\\BKLT",
- .brightness_set = "SPLV",
- .brightness_get = "GPLV",
- .display_set = "SDSP",
- .display_get = "\\INFB"},
-
- {
- .name = "xxN",
- .mt_mled = "MLED",
-/* WLED present, but not controlled by ACPI */
- .mt_lcd_switch = xxN_PREFIX "_Q10",
- .lcd_status = "\\BKLT",
- .brightness_set = "SPLV",
- .brightness_get = "GPLV",
- .display_set = "SDSP",
- .display_get = "\\ADVG"},
-
- {
- .name = "A4S",
- .brightness_set = "SPLV",
- .brightness_get = "GPLV",
- .mt_bt_switch = "BLED",
- .mt_wled = "WLED"
- },
-
- {
- .name = "F3Sa",
- .mt_bt_switch = "BLED",
- .mt_wled = "WLED",
- .mt_mled = "MLED",
- .brightness_get = "GPLV",
- .brightness_set = "SPLV",
- .mt_lcd_switch = "\\_SB.PCI0.SBRG.EC0._Q10",
- .lcd_status = "\\_SB.PCI0.SBRG.EC0.RPIN",
- .display_get = "\\ADVG",
- .display_set = "SDSP",
- },
- {
- .name = "R1F",
- .mt_bt_switch = "BLED",
- .mt_mled = "MLED",
- .mt_wled = "WLED",
- .mt_lcd_switch = "\\Q10",
- .lcd_status = "\\GP06",
- .brightness_set = "SPLV",
- .brightness_get = "GPLV",
- .display_set = "SDSP",
- .display_get = "\\INFB"
- }
-};
-
-/* procdir we use */
-static struct proc_dir_entry *asus_proc_dir;
-
-static struct backlight_device *asus_backlight_device;
-
-/*
- * This header is made available to allow proper configuration given model,
- * revision number , ... this info cannot go in struct asus_hotk because it is
- * available before the hotk
- */
-static struct acpi_table_header *asus_info;
-
-/* The actual device the driver binds to */
-static struct asus_hotk *hotk;
-
-/*
- * The hotkey driver and autoloading declaration
- */
-static int asus_hotk_add(struct acpi_device *device);
-static int asus_hotk_remove(struct acpi_device *device, int type);
-static void asus_hotk_notify(struct acpi_device *device, u32 event);
-
-static const struct acpi_device_id asus_device_ids[] = {
- {"ATK0100", 0},
- {"", 0},
-};
-MODULE_DEVICE_TABLE(acpi, asus_device_ids);
-
-static struct acpi_driver asus_hotk_driver = {
- .name = "asus_acpi",
- .class = ACPI_HOTK_CLASS,
- .owner = THIS_MODULE,
- .ids = asus_device_ids,
- .flags = ACPI_DRIVER_ALL_NOTIFY_EVENTS,
- .ops = {
- .add = asus_hotk_add,
- .remove = asus_hotk_remove,
- .notify = asus_hotk_notify,
- },
-};
-
-/*
- * This function evaluates an ACPI method, given an int as parameter, the
- * method is searched within the scope of the handle, can be NULL. The output
- * of the method is written is output, which can also be NULL
- *
- * returns 1 if write is successful, 0 else.
- */
-static int write_acpi_int(acpi_handle handle, const char *method, int val,
- struct acpi_buffer *output)
-{
- struct acpi_object_list params; /* list of input parameters (int) */
- union acpi_object in_obj; /* the only param we use */
- acpi_status status;
-
- params.count = 1;
- params.pointer = &in_obj;
- in_obj.type = ACPI_TYPE_INTEGER;
- in_obj.integer.value = val;
-
- status = acpi_evaluate_object(handle, (char *)method, ¶ms, output);
- return (status == AE_OK);
-}
-
-static int read_acpi_int(acpi_handle handle, const char *method, int *val)
-{
- struct acpi_buffer output;
- union acpi_object out_obj;
- acpi_status status;
-
- output.length = sizeof(out_obj);
- output.pointer = &out_obj;
-
- status = acpi_evaluate_object(handle, (char *)method, NULL, &output);
- *val = out_obj.integer.value;
- return (status == AE_OK) && (out_obj.type == ACPI_TYPE_INTEGER);
-}
-
-static int asus_info_proc_show(struct seq_file *m, void *v)
-{
- int temp;
-
- seq_printf(m, ACPI_HOTK_NAME " " ASUS_ACPI_VERSION "\n");
- seq_printf(m, "Model reference : %s\n", hotk->methods->name);
- /*
- * The SFUN method probably allows the original driver to get the list
- * of features supported by a given model. For now, 0x0100 or 0x0800
- * bit signifies that the laptop is equipped with a Wi-Fi MiniPCI card.
- * The significance of others is yet to be found.
- */
- if (read_acpi_int(hotk->handle, "SFUN", &temp))
- seq_printf(m, "SFUN value : 0x%04x\n", temp);
- /*
- * Another value for userspace: the ASYM method returns 0x02 for
- * battery low and 0x04 for battery critical, its readings tend to be
- * more accurate than those provided by _BST.
- * Note: since not all the laptops provide this method, errors are
- * silently ignored.
- */
- if (read_acpi_int(hotk->handle, "ASYM", &temp))
- seq_printf(m, "ASYM value : 0x%04x\n", temp);
- if (asus_info) {
- seq_printf(m, "DSDT length : %d\n", asus_info->length);
- seq_printf(m, "DSDT checksum : %d\n", asus_info->checksum);
- seq_printf(m, "DSDT revision : %d\n", asus_info->revision);
- seq_printf(m, "OEM id : %.*s\n", ACPI_OEM_ID_SIZE, asus_info->oem_id);
- seq_printf(m, "OEM table id : %.*s\n", ACPI_OEM_TABLE_ID_SIZE, asus_info->oem_table_id);
- seq_printf(m, "OEM revision : 0x%x\n", asus_info->oem_revision);
- seq_printf(m, "ASL comp vendor id : %.*s\n", ACPI_NAME_SIZE, asus_info->asl_compiler_id);
- seq_printf(m, "ASL comp revision : 0x%x\n", asus_info->asl_compiler_revision);
- }
-
- return 0;
-}
-
-static int asus_info_proc_open(struct inode *inode, struct file *file)
-{
- return single_open(file, asus_info_proc_show, NULL);
-}
-
-static const struct file_operations asus_info_proc_fops = {
- .owner = THIS_MODULE,
- .open = asus_info_proc_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
-};
-
-/*
- * /proc handlers
- * We write our info in page, we begin at offset off and cannot write more
- * than count bytes. We set eof to 1 if we handle those 2 values. We return the
- * number of bytes written in page
- */
-
-/* Generic LED functions */
-static int read_led(const char *ledname, int ledmask)
-{
- if (ledname) {
- int led_status;
-
- if (read_acpi_int(NULL, ledname, &led_status))
- return led_status;
- else
- pr_warn("Error reading LED status\n");
- }
- return (hotk->status & ledmask) ? 1 : 0;
-}
-
-static int parse_arg(const char __user *buf, unsigned long count, int *val)
-{
- char s[32];
- if (!count)
- return 0;
- if (count > 31)
- return -EINVAL;
- if (copy_from_user(s, buf, count))
- return -EFAULT;
- s[count] = 0;
- if (sscanf(s, "%i", val) != 1)
- return -EINVAL;
- return count;
-}
-
-/* FIXME: kill extraneous args so it can be called independently */
-static int
-write_led(const char __user *buffer, unsigned long count,
- char *ledname, int ledmask, int invert)
-{
- int rv, value;
- int led_out = 0;
-
- rv = parse_arg(buffer, count, &value);
- if (rv > 0)
- led_out = value ? 1 : 0;
-
- hotk->status =
- (led_out) ? (hotk->status | ledmask) : (hotk->status & ~ledmask);
-
- if (invert) /* invert target value */
- led_out = !led_out;
-
- if (!write_acpi_int(hotk->handle, ledname, led_out, NULL))
- pr_warn("LED (%s) write failed\n", ledname);
-
- return rv;
-}
-
-/*
- * Proc handlers for MLED
- */
-static int mled_proc_show(struct seq_file *m, void *v)
-{
- seq_printf(m, "%d\n", read_led(hotk->methods->mled_status, MLED_ON));
- return 0;
-}
-
-static int mled_proc_open(struct inode *inode, struct file *file)
-{
- return single_open(file, mled_proc_show, NULL);
-}
-
-static ssize_t mled_proc_write(struct file *file, const char __user *buffer,
- size_t count, loff_t *pos)
-{
- return write_led(buffer, count, hotk->methods->mt_mled, MLED_ON, 1);
-}
-
-static const struct file_operations mled_proc_fops = {
- .owner = THIS_MODULE,
- .open = mled_proc_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
- .write = mled_proc_write,
-};
-
-/*
- * Proc handlers for LED display
- */
-static int ledd_proc_show(struct seq_file *m, void *v)
-{
- seq_printf(m, "0x%08x\n", hotk->ledd_status);
- return 0;
-}
-
-static int ledd_proc_open(struct inode *inode, struct file *file)
-{
- return single_open(file, ledd_proc_show, NULL);
-}
-
-static ssize_t ledd_proc_write(struct file *file, const char __user *buffer,
- size_t count, loff_t *pos)
-{
- int rv, value;
-
- rv = parse_arg(buffer, count, &value);
- if (rv > 0) {
- if (!write_acpi_int
- (hotk->handle, hotk->methods->mt_ledd, value, NULL))
- pr_warn("LED display write failed\n");
- else
- hotk->ledd_status = (u32) value;
- }
- return rv;
-}
-
-static const struct file_operations ledd_proc_fops = {
- .owner = THIS_MODULE,
- .open = ledd_proc_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
- .write = ledd_proc_write,
-};
-
-/*
- * Proc handlers for WLED
- */
-static int wled_proc_show(struct seq_file *m, void *v)
-{
- seq_printf(m, "%d\n", read_led(hotk->methods->wled_status, WLED_ON));
- return 0;
-}
-
-static int wled_proc_open(struct inode *inode, struct file *file)
-{
- return single_open(file, wled_proc_show, NULL);
-}
-
-static ssize_t wled_proc_write(struct file *file, const char __user *buffer,
- size_t count, loff_t *pos)
-{
- return write_led(buffer, count, hotk->methods->mt_wled, WLED_ON, 0);
-}
-
-static const struct file_operations wled_proc_fops = {
- .owner = THIS_MODULE,
- .open = wled_proc_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
- .write = wled_proc_write,
-};
-
-/*
- * Proc handlers for Bluetooth
- */
-static int bluetooth_proc_show(struct seq_file *m, void *v)
-{
- seq_printf(m, "%d\n", read_led(hotk->methods->bt_status, BT_ON));
- return 0;
-}
-
-static int bluetooth_proc_open(struct inode *inode, struct file *file)
-{
- return single_open(file, bluetooth_proc_show, NULL);
-}
-
-static ssize_t bluetooth_proc_write(struct file *file,
- const char __user *buffer, size_t count, loff_t *pos)
-{
- /* Note: mt_bt_switch controls both internal Bluetooth adapter's
- presence and its LED */
- return write_led(buffer, count, hotk->methods->mt_bt_switch, BT_ON, 0);
-}
-
-static const struct file_operations bluetooth_proc_fops = {
- .owner = THIS_MODULE,
- .open = bluetooth_proc_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
- .write = bluetooth_proc_write,
-};
-
-/*
- * Proc handlers for TLED
- */
-static int tled_proc_show(struct seq_file *m, void *v)
-{
- seq_printf(m, "%d\n", read_led(hotk->methods->tled_status, TLED_ON));
- return 0;
-}
-
-static int tled_proc_open(struct inode *inode, struct file *file)
-{
- return single_open(file, tled_proc_show, NULL);
-}
-
-static ssize_t tled_proc_write(struct file *file, const char __user *buffer,
- size_t count, loff_t *pos)
-{
- return write_led(buffer, count, hotk->methods->mt_tled, TLED_ON, 0);
-}
-
-static const struct file_operations tled_proc_fops = {
- .owner = THIS_MODULE,
- .open = tled_proc_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
- .write = tled_proc_write,
-};
-
-static int get_lcd_state(void)
-{
- int lcd = 0;
-
- if (hotk->model == L3H) {
- /* L3H and the like have to be handled differently */
- acpi_status status = 0;
- struct acpi_object_list input;
- union acpi_object mt_params[2];
- struct acpi_buffer output;
- union acpi_object out_obj;
-
- input.count = 2;
- input.pointer = mt_params;
- /* Note: the following values are partly guessed up, but
- otherwise they seem to work */
- mt_params[0].type = ACPI_TYPE_INTEGER;
- mt_params[0].integer.value = 0x02;
- mt_params[1].type = ACPI_TYPE_INTEGER;
- mt_params[1].integer.value = 0x02;
-
- output.length = sizeof(out_obj);
- output.pointer = &out_obj;
-
- status =
- acpi_evaluate_object(NULL, hotk->methods->lcd_status,
- &input, &output);
- if (status != AE_OK)
- return -1;
- if (out_obj.type == ACPI_TYPE_INTEGER)
- /* That's what the AML code does */
- lcd = out_obj.integer.value >> 8;
- } else if (hotk->model == F3Sa) {
- unsigned long long tmp;
- union acpi_object param;
- struct acpi_object_list input;
- acpi_status status;
-
- /* Read pin 11 */
- param.type = ACPI_TYPE_INTEGER;
- param.integer.value = 0x11;
- input.count = 1;
- input.pointer = ¶m;
-
- status = acpi_evaluate_integer(NULL, hotk->methods->lcd_status,
- &input, &tmp);
- if (status != AE_OK)
- return -1;
-
- lcd = tmp;
- } else {
- /* We don't have to check anything if we are here */
- if (!read_acpi_int(NULL, hotk->methods->lcd_status, &lcd))
- pr_warn("Error reading LCD status\n");
-
- if (hotk->model == L2D)
- lcd = ~lcd;
- }
-
- return (lcd & 1);
-}
-
-static int set_lcd_state(int value)
-{
- int lcd = 0;
- acpi_status status = 0;
-
- lcd = value ? 1 : 0;
- if (lcd != get_lcd_state()) {
- /* switch */
- if (hotk->model != L3H) {
- status =
- acpi_evaluate_object(NULL,
- hotk->methods->mt_lcd_switch,
- NULL, NULL);
- } else {
- /* L3H and the like must be handled differently */
- if (!write_acpi_int
- (hotk->handle, hotk->methods->mt_lcd_switch, 0x07,
- NULL))
- status = AE_ERROR;
- /* L3H's AML executes EHK (0x07) upon Fn+F7 keypress,
- the exact behaviour is simulated here */
- }
- if (ACPI_FAILURE(status))
- pr_warn("Error switching LCD\n");
- }
- return 0;
-
-}
-
-static int lcd_proc_show(struct seq_file *m, void *v)
-{
- seq_printf(m, "%d\n", get_lcd_state());
- return 0;
-}
-
-static int lcd_proc_open(struct inode *inode, struct file *file)
-{
- return single_open(file, lcd_proc_show, NULL);
-}
-
-static ssize_t lcd_proc_write(struct file *file, const char __user *buffer,
- size_t count, loff_t *pos)
-{
- int rv, value;
-
- rv = parse_arg(buffer, count, &value);
- if (rv > 0)
- set_lcd_state(value);
- return rv;
-}
-
-static const struct file_operations lcd_proc_fops = {
- .owner = THIS_MODULE,
- .open = lcd_proc_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
- .write = lcd_proc_write,
-};
-
-static int read_brightness(struct backlight_device *bd)
-{
- int value;
-
- if (hotk->methods->brightness_get) { /* SPLV/GPLV laptop */
- if (!read_acpi_int(hotk->handle, hotk->methods->brightness_get,
- &value))
- pr_warn("Error reading brightness\n");
- } else if (hotk->methods->brightness_status) { /* For D1 for example */
- if (!read_acpi_int(NULL, hotk->methods->brightness_status,
- &value))
- pr_warn("Error reading brightness\n");
- } else /* No GPLV method */
- value = hotk->brightness;
- return value;
-}
-
-/*
- * Change the brightness level
- */
-static int set_brightness(int value)
-{
- acpi_status status = 0;
- int ret = 0;
-
- /* SPLV laptop */
- if (hotk->methods->brightness_set) {
- if (!write_acpi_int(hotk->handle, hotk->methods->brightness_set,
- value, NULL)) {
- pr_warn("Error changing brightness\n");
- ret = -EIO;
- }
- goto out;
- }
-
- /* No SPLV method if we are here, act as appropriate */
- value -= read_brightness(NULL);
- while (value != 0) {
- status = acpi_evaluate_object(NULL, (value > 0) ?
- hotk->methods->brightness_up :
- hotk->methods->brightness_down,
- NULL, NULL);
- (value > 0) ? value-- : value++;
- if (ACPI_FAILURE(status)) {
- pr_warn("Error changing brightness\n");
- ret = -EIO;
- }
- }
-out:
- return ret;
-}
-
-static int set_brightness_status(struct backlight_device *bd)
-{
- return set_brightness(bd->props.brightness);
-}
-
-static int brn_proc_show(struct seq_file *m, void *v)
-{
- seq_printf(m, "%d\n", read_brightness(NULL));
- return 0;
-}
-
-static int brn_proc_open(struct inode *inode, struct file *file)
-{
- return single_open(file, brn_proc_show, NULL);
-}
-
-static ssize_t brn_proc_write(struct file *file, const char __user *buffer,
- size_t count, loff_t *pos)
-{
- int rv, value;
-
- rv = parse_arg(buffer, count, &value);
- if (rv > 0) {
- value = (0 < value) ? ((15 < value) ? 15 : value) : 0;
- /* 0 <= value <= 15 */
- set_brightness(value);
- }
- return rv;
-}
-
-static const struct file_operations brn_proc_fops = {
- .owner = THIS_MODULE,
- .open = brn_proc_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
- .write = brn_proc_write,
-};
-
-static void set_display(int value)
-{
- /* no sanity check needed for now */
- if (!write_acpi_int(hotk->handle, hotk->methods->display_set,
- value, NULL))
- pr_warn("Error setting display\n");
- return;
-}
-
-/*
- * Now, *this* one could be more user-friendly, but so far, no-one has
- * complained. The significance of bits is the same as in proc_write_disp()
- */
-static int disp_proc_show(struct seq_file *m, void *v)
-{
- int value = 0;
-
- if (!read_acpi_int(hotk->handle, hotk->methods->display_get, &value))
- pr_warn("Error reading display status\n");
- value &= 0x07; /* needed for some models, shouldn't hurt others */
- seq_printf(m, "%d\n", value);
- return 0;
-}
-
-static int disp_proc_open(struct inode *inode, struct file *file)
-{
- return single_open(file, disp_proc_show, NULL);
-}
-
-/*
- * Experimental support for display switching. As of now: 1 should activate
- * the LCD output, 2 should do for CRT, and 4 for TV-Out. Any combination
- * (bitwise) of these will suffice. I never actually tested 3 displays hooked
- * up simultaneously, so be warned. See the acpi4asus README for more info.
- */
-static ssize_t disp_proc_write(struct file *file, const char __user *buffer,
- size_t count, loff_t *pos)
-{
- int rv, value;
-
- rv = parse_arg(buffer, count, &value);
- if (rv > 0)
- set_display(value);
- return rv;
-}
-
-static const struct file_operations disp_proc_fops = {
- .owner = THIS_MODULE,
- .open = disp_proc_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
- .write = disp_proc_write,
-};
-
-static int
-asus_proc_add(char *name, const struct file_operations *proc_fops, umode_t mode,
- struct acpi_device *device)
-{
- struct proc_dir_entry *proc;
-
- proc = proc_create_data(name, mode, acpi_device_dir(device),
- proc_fops, acpi_driver_data(device));
- if (!proc) {
- pr_warn(" Unable to create %s fs entry\n", name);
- return -1;
- }
- proc->uid = asus_uid;
- proc->gid = asus_gid;
- return 0;
-}
-
-static int asus_hotk_add_fs(struct acpi_device *device)
-{
- struct proc_dir_entry *proc;
- umode_t mode;
-
- if ((asus_uid == 0) && (asus_gid == 0)) {
- mode = S_IFREG | S_IRUGO | S_IWUSR | S_IWGRP;
- } else {
- mode = S_IFREG | S_IRUSR | S_IRGRP | S_IWUSR | S_IWGRP;
- pr_warn(" asus_uid and asus_gid parameters are "
- "deprecated, use chown and chmod instead!\n");
- }
-
- acpi_device_dir(device) = asus_proc_dir;
- if (!acpi_device_dir(device))
- return -ENODEV;
-
- proc = proc_create(PROC_INFO, mode, acpi_device_dir(device),
- &asus_info_proc_fops);
- if (proc) {
- proc->uid = asus_uid;
- proc->gid = asus_gid;
- } else {
- pr_warn(" Unable to create " PROC_INFO " fs entry\n");
- }
-
- if (hotk->methods->mt_wled) {
- asus_proc_add(PROC_WLED, &wled_proc_fops, mode, device);
- }
-
- if (hotk->methods->mt_ledd) {
- asus_proc_add(PROC_LEDD, &ledd_proc_fops, mode, device);
- }
-
- if (hotk->methods->mt_mled) {
- asus_proc_add(PROC_MLED, &mled_proc_fops, mode, device);
- }
-
- if (hotk->methods->mt_tled) {
- asus_proc_add(PROC_TLED, &tled_proc_fops, mode, device);
- }
-
- if (hotk->methods->mt_bt_switch) {
- asus_proc_add(PROC_BT, &bluetooth_proc_fops, mode, device);
- }
-
- /*
- * We need both read node and write method as LCD switch is also
- * accessible from the keyboard
- */
- if (hotk->methods->mt_lcd_switch && hotk->methods->lcd_status) {
- asus_proc_add(PROC_LCD, &lcd_proc_fops, mode, device);
- }
-
- if ((hotk->methods->brightness_up && hotk->methods->brightness_down) ||
- (hotk->methods->brightness_get && hotk->methods->brightness_set)) {
- asus_proc_add(PROC_BRN, &brn_proc_fops, mode, device);
- }
-
- if (hotk->methods->display_set) {
- asus_proc_add(PROC_DISP, &disp_proc_fops, mode, device);
- }
-
- return 0;
-}
-
-static int asus_hotk_remove_fs(struct acpi_device *device)
-{
- if (acpi_device_dir(device)) {
- remove_proc_entry(PROC_INFO, acpi_device_dir(device));
- if (hotk->methods->mt_wled)
- remove_proc_entry(PROC_WLED, acpi_device_dir(device));
- if (hotk->methods->mt_mled)
- remove_proc_entry(PROC_MLED, acpi_device_dir(device));
- if (hotk->methods->mt_tled)
- remove_proc_entry(PROC_TLED, acpi_device_dir(device));
- if (hotk->methods->mt_ledd)
- remove_proc_entry(PROC_LEDD, acpi_device_dir(device));
- if (hotk->methods->mt_bt_switch)
- remove_proc_entry(PROC_BT, acpi_device_dir(device));
- if (hotk->methods->mt_lcd_switch && hotk->methods->lcd_status)
- remove_proc_entry(PROC_LCD, acpi_device_dir(device));
- if ((hotk->methods->brightness_up
- && hotk->methods->brightness_down)
- || (hotk->methods->brightness_get
- && hotk->methods->brightness_set))
- remove_proc_entry(PROC_BRN, acpi_device_dir(device));
- if (hotk->methods->display_set)
- remove_proc_entry(PROC_DISP, acpi_device_dir(device));
- }
- return 0;
-}
-
-static void asus_hotk_notify(struct acpi_device *device, u32 event)
-{
- /* TODO Find a better way to handle events count. */
- if (!hotk)
- return;
-
- /*
- * The BIOS *should* be sending us device events, but apparently
- * Asus uses system events instead, so just ignore any device
- * events we get.
- */
- if (event > ACPI_MAX_SYS_NOTIFY)
- return;
-
- if ((event & ~((u32) BR_UP)) < 16)
- hotk->brightness = (event & ~((u32) BR_UP));
- else if ((event & ~((u32) BR_DOWN)) < 16)
- hotk->brightness = (event & ~((u32) BR_DOWN));
-
- acpi_bus_generate_proc_event(hotk->device, event,
- hotk->event_count[event % 128]++);
-
- return;
-}
-
-/*
- * Match the model string to the list of supported models. Return END_MODEL if
- * no match or model is NULL.
- */
-static int asus_model_match(char *model)
-{
- if (model == NULL)
- return END_MODEL;
-
- if (strncmp(model, "L3D", 3) == 0)
- return L3D;
- else if (strncmp(model, "L2E", 3) == 0 ||
- strncmp(model, "L3H", 3) == 0 || strncmp(model, "L5D", 3) == 0)
- return L3H;
- else if (strncmp(model, "L3", 2) == 0 || strncmp(model, "L2B", 3) == 0)
- return L3C;
- else if (strncmp(model, "L8L", 3) == 0)
- return L8L;
- else if (strncmp(model, "L4R", 3) == 0)
- return L4R;
- else if (strncmp(model, "M6N", 3) == 0 || strncmp(model, "W3N", 3) == 0)
- return M6N;
- else if (strncmp(model, "M6R", 3) == 0 || strncmp(model, "A3G", 3) == 0)
- return M6R;
- else if (strncmp(model, "M2N", 3) == 0 ||
- strncmp(model, "M3N", 3) == 0 ||
- strncmp(model, "M5N", 3) == 0 ||
- strncmp(model, "S1N", 3) == 0 ||
- strncmp(model, "S5N", 3) == 0)
- return xxN;
- else if (strncmp(model, "M1", 2) == 0)
- return M1A;
- else if (strncmp(model, "M2", 2) == 0 || strncmp(model, "L4E", 3) == 0)
- return M2E;
- else if (strncmp(model, "L2", 2) == 0)
- return L2D;
- else if (strncmp(model, "L8", 2) == 0)
- return S1x;
- else if (strncmp(model, "D1", 2) == 0)
- return D1x;
- else if (strncmp(model, "A1", 2) == 0)
- return A1x;
- else if (strncmp(model, "A2", 2) == 0)
- return A2x;
- else if (strncmp(model, "J1", 2) == 0)
- return S2x;
- else if (strncmp(model, "L5", 2) == 0)
- return L5x;
- else if (strncmp(model, "A4G", 3) == 0)
- return A4G;
- else if (strncmp(model, "W1N", 3) == 0)
- return W1N;
- else if (strncmp(model, "W3V", 3) == 0)
- return W3V;
- else if (strncmp(model, "W5A", 3) == 0)
- return W5A;
- else if (strncmp(model, "R1F", 3) == 0)
- return R1F;
- else if (strncmp(model, "A4S", 3) == 0)
- return A4S;
- else if (strncmp(model, "F3Sa", 4) == 0)
- return F3Sa;
- else
- return END_MODEL;
-}
-
-/*
- * This function is used to initialize the hotk with right values. In this
- * method, we can make all the detection we want, and modify the hotk struct
- */
-static int asus_hotk_get_info(void)
-{
- struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
- union acpi_object *model = NULL;
- int bsts_result;
- char *string = NULL;
- acpi_status status;
-
- /*
- * Get DSDT headers early enough to allow for differentiating between
- * models, but late enough to allow acpi_bus_register_driver() to fail
- * before doing anything ACPI-specific. Should we encounter a machine,
- * which needs special handling (i.e. its hotkey device has a different
- * HID), this bit will be moved. A global variable asus_info contains
- * the DSDT header.
- */
- status = acpi_get_table(ACPI_SIG_DSDT, 1, &asus_info);
- if (ACPI_FAILURE(status))
- pr_warn(" Couldn't get the DSDT table header\n");
-
- /* We have to write 0 on init this far for all ASUS models */
- if (!write_acpi_int(hotk->handle, "INIT", 0, &buffer)) {
- pr_err(" Hotkey initialization failed\n");
- return -ENODEV;
- }
-
- /* This needs to be called for some laptops to init properly */
- if (!read_acpi_int(hotk->handle, "BSTS", &bsts_result))
- pr_warn(" Error calling BSTS\n");
- else if (bsts_result)
- pr_notice(" BSTS called, 0x%02x returned\n", bsts_result);
-
- /*
- * Try to match the object returned by INIT to the specific model.
- * Handle every possible object (or the lack of thereof) the DSDT
- * writers might throw at us. When in trouble, we pass NULL to
- * asus_model_match() and try something completely different.
- */
- if (buffer.pointer) {
- model = buffer.pointer;
- switch (model->type) {
- case ACPI_TYPE_STRING:
- string = model->string.pointer;
- break;
- case ACPI_TYPE_BUFFER:
- string = model->buffer.pointer;
- break;
- default:
- kfree(model);
- model = NULL;
- break;
- }
- }
- hotk->model = asus_model_match(string);
- if (hotk->model == END_MODEL) { /* match failed */
- if (asus_info &&
- strncmp(asus_info->oem_table_id, "ODEM", 4) == 0) {
- hotk->model = P30;
- pr_notice(" Samsung P30 detected, supported\n");
- hotk->methods = &model_conf[hotk->model];
- kfree(model);
- return 0;
- } else {
- hotk->model = M2E;
- pr_notice(" unsupported model %s, trying default values\n",
- string);
- pr_notice(" send /proc/acpi/dsdt to the developers\n");
- kfree(model);
- return -ENODEV;
- }
- }
- hotk->methods = &model_conf[hotk->model];
- pr_notice(" %s model detected, supported\n", string);
-
- /* Sort of per-model blacklist */
- if (strncmp(string, "L2B", 3) == 0)
- hotk->methods->lcd_status = NULL;
- /* L2B is similar enough to L3C to use its settings, with this only
- exception */
- else if (strncmp(string, "A3G", 3) == 0)
- hotk->methods->lcd_status = "\\BLFG";
- /* A3G is like M6R */
- else if (strncmp(string, "S5N", 3) == 0 ||
- strncmp(string, "M5N", 3) == 0 ||
- strncmp(string, "W3N", 3) == 0)
- hotk->methods->mt_mled = NULL;
- /* S5N, M5N and W3N have no MLED */
- else if (strncmp(string, "L5D", 3) == 0)
- hotk->methods->mt_wled = NULL;
- /* L5D's WLED is not controlled by ACPI */
- else if (strncmp(string, "M2N", 3) == 0 ||
- strncmp(string, "W3V", 3) == 0 ||
- strncmp(string, "S1N", 3) == 0)
- hotk->methods->mt_wled = "WLED";
- /* M2N, S1N and W3V have a usable WLED */
- else if (asus_info) {
- if (strncmp(asus_info->oem_table_id, "L1", 2) == 0)
- hotk->methods->mled_status = NULL;
- /* S1300A reports L84F, but L1400B too, account for that */
- }
-
- kfree(model);
-
- return 0;
-}
-
-static int asus_hotk_check(void)
-{
- int result = 0;
-
- result = acpi_bus_get_status(hotk->device);
- if (result)
- return result;
-
- if (hotk->device->status.present) {
- result = asus_hotk_get_info();
- } else {
- pr_err(" Hotkey device not present, aborting\n");
- return -EINVAL;
- }
-
- return result;
-}
-
-static int asus_hotk_found;
-
-static int asus_hotk_add(struct acpi_device *device)
-{
- acpi_status status = AE_OK;
- int result;
-
- pr_notice("Asus Laptop ACPI Extras version %s\n", ASUS_ACPI_VERSION);
-
- hotk = kzalloc(sizeof(struct asus_hotk), GFP_KERNEL);
- if (!hotk)
- return -ENOMEM;
-
- hotk->handle = device->handle;
- strcpy(acpi_device_name(device), ACPI_HOTK_DEVICE_NAME);
- strcpy(acpi_device_class(device), ACPI_HOTK_CLASS);
- device->driver_data = hotk;
- hotk->device = device;
-
- result = asus_hotk_check();
- if (result)
- goto end;
-
- result = asus_hotk_add_fs(device);
- if (result)
- goto end;
-
- /* For laptops without GPLV: init the hotk->brightness value */
- if ((!hotk->methods->brightness_get)
- && (!hotk->methods->brightness_status)
- && (hotk->methods->brightness_up && hotk->methods->brightness_down)) {
- status =
- acpi_evaluate_object(NULL, hotk->methods->brightness_down,
- NULL, NULL);
- if (ACPI_FAILURE(status))
- pr_warn(" Error changing brightness\n");
- else {
- status =
- acpi_evaluate_object(NULL,
- hotk->methods->brightness_up,
- NULL, NULL);
- if (ACPI_FAILURE(status))
- pr_warn(" Strange, error changing brightness\n");
- }
- }
-
- asus_hotk_found = 1;
-
- /* LED display is off by default */
- hotk->ledd_status = 0xFFF;
-
-end:
- if (result)
- kfree(hotk);
-
- return result;
-}
-
-static int asus_hotk_remove(struct acpi_device *device, int type)
-{
- asus_hotk_remove_fs(device);
-
- kfree(hotk);
-
- return 0;
-}
-
-static const struct backlight_ops asus_backlight_data = {
- .get_brightness = read_brightness,
- .update_status = set_brightness_status,
-};
-
-static void asus_acpi_exit(void)
-{
- if (asus_backlight_device)
- backlight_device_unregister(asus_backlight_device);
-
- acpi_bus_unregister_driver(&asus_hotk_driver);
- remove_proc_entry(PROC_ASUS, acpi_root_dir);
-
- return;
-}
-
-static int __init asus_acpi_init(void)
-{
- struct backlight_properties props;
- int result;
-
- result = acpi_bus_register_driver(&asus_hotk_driver);
- if (result < 0)
- return result;
-
- asus_proc_dir = proc_mkdir(PROC_ASUS, acpi_root_dir);
- if (!asus_proc_dir) {
- pr_err("Unable to create /proc entry\n");
- acpi_bus_unregister_driver(&asus_hotk_driver);
- return -ENODEV;
- }
-
- /*
- * This is a bit of a kludge. We only want this module loaded
- * for ASUS systems, but there's currently no way to probe the
- * ACPI namespace for ASUS HIDs. So we just return failure if
- * we didn't find one, which will cause the module to be
- * unloaded.
- */
- if (!asus_hotk_found) {
- acpi_bus_unregister_driver(&asus_hotk_driver);
- remove_proc_entry(PROC_ASUS, acpi_root_dir);
- return -ENODEV;
- }
-
- memset(&props, 0, sizeof(struct backlight_properties));
- props.type = BACKLIGHT_PLATFORM;
- props.max_brightness = 15;
- asus_backlight_device = backlight_device_register("asus", NULL, NULL,
- &asus_backlight_data,
- &props);
- if (IS_ERR(asus_backlight_device)) {
- pr_err("Could not register asus backlight device\n");
- asus_backlight_device = NULL;
- asus_acpi_exit();
- return -ENODEV;
- }
-
- return 0;
-}
-
-module_init(asus_acpi_init);
-module_exit(asus_acpi_exit);
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