| /* |
| * asus-laptop.c - Asus Laptop Support |
| * |
| * |
| * Copyright (C) 2002-2005 Julien Lerouge, 2003-2006 Karol Kozimor |
| * Copyright (C) 2006 Corentin Chary |
| * |
| * 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. |
| * Eric Burghard - LED display support for W1N |
| * Josh Green - Light Sens support |
| * Thomas Tuttle - His first patch for led support was very helpfull |
| * |
| */ |
| |
| #include <linux/autoconf.h> |
| #include <linux/kernel.h> |
| #include <linux/module.h> |
| #include <linux/init.h> |
| #include <linux/types.h> |
| #include <linux/err.h> |
| #include <linux/proc_fs.h> |
| #include <linux/backlight.h> |
| #include <linux/fb.h> |
| #include <linux/leds.h> |
| #include <linux/platform_device.h> |
| #include <acpi/acpi_drivers.h> |
| #include <acpi/acpi_bus.h> |
| #include <asm/uaccess.h> |
| |
| #define ASUS_LAPTOP_VERSION "0.40" |
| |
| #define ASUS_HOTK_NAME "Asus Laptop Support" |
| #define ASUS_HOTK_CLASS "hotkey" |
| #define ASUS_HOTK_DEVICE_NAME "Hotkey" |
| #define ASUS_HOTK_HID "ATK0100" |
| #define ASUS_HOTK_FILE "asus-laptop" |
| #define ASUS_HOTK_PREFIX "\\_SB.ATKD." |
| |
| /* |
| * Some events we use, same for all Asus |
| */ |
| #define ATKD_BR_UP 0x10 |
| #define ATKD_BR_DOWN 0x20 |
| #define ATKD_LCD_ON 0x33 |
| #define ATKD_LCD_OFF 0x34 |
| |
| /* |
| * Known bits returned by \_SB.ATKD.HWRS |
| */ |
| #define WL_HWRS 0x80 |
| #define BT_HWRS 0x100 |
| |
| /* |
| * Flags for hotk status |
| * WL_ON and BT_ON are also used for wireless_status() |
| */ |
| #define WL_ON 0x01 //internal Wifi |
| #define BT_ON 0x02 //internal Bluetooth |
| #define MLED_ON 0x04 //mail LED |
| #define TLED_ON 0x08 //touchpad LED |
| #define RLED_ON 0x10 //Record LED |
| #define PLED_ON 0x20 //Phone LED |
| #define GLED_ON 0x40 //Gaming LED |
| #define LCD_ON 0x80 //LCD backlight |
| |
| #define ASUS_LOG ASUS_HOTK_FILE ": " |
| #define ASUS_ERR KERN_ERR ASUS_LOG |
| #define ASUS_WARNING KERN_WARNING ASUS_LOG |
| #define ASUS_NOTICE KERN_NOTICE ASUS_LOG |
| #define ASUS_INFO KERN_INFO ASUS_LOG |
| #define ASUS_DEBUG KERN_DEBUG ASUS_LOG |
| |
| MODULE_AUTHOR("Julien Lerouge, Karol Kozimor, Corentin Chary"); |
| MODULE_DESCRIPTION(ASUS_HOTK_NAME); |
| MODULE_LICENSE("GPL"); |
| |
| /* WAPF defines the behavior of the Fn+Fx wlan key |
| * The significance of values is yet to be found, but |
| * most of the time: |
| * 0x0 will do nothing |
| * 0x1 will allow to control the device with Fn+Fx key. |
| * 0x4 will send an ACPI event (0x88) while pressing the Fn+Fx key |
| * 0x5 like 0x1 or 0x4 |
| * So, if something doesn't work as you want, just try other values =) |
| */ |
| static uint wapf = 1; |
| module_param(wapf, uint, 0644); |
| MODULE_PARM_DESC(wapf, "WAPF value"); |
| |
| #define ASUS_HANDLE(object, paths...) \ |
| static acpi_handle object##_handle = NULL; \ |
| static char *object##_paths[] = { paths } |
| |
| /* LED */ |
| ASUS_HANDLE(mled_set, ASUS_HOTK_PREFIX "MLED"); |
| ASUS_HANDLE(tled_set, ASUS_HOTK_PREFIX "TLED"); |
| ASUS_HANDLE(rled_set, ASUS_HOTK_PREFIX "RLED"); /* W1JC */ |
| ASUS_HANDLE(pled_set, ASUS_HOTK_PREFIX "PLED"); /* A7J */ |
| ASUS_HANDLE(gled_set, ASUS_HOTK_PREFIX "GLED"); /* G1, G2 (probably) */ |
| |
| /* LEDD */ |
| ASUS_HANDLE(ledd_set, ASUS_HOTK_PREFIX "SLCM"); |
| |
| /* Bluetooth and WLAN |
| * WLED and BLED are not handled like other XLED, because in some dsdt |
| * they also control the WLAN/Bluetooth device. |
| */ |
| ASUS_HANDLE(wl_switch, ASUS_HOTK_PREFIX "WLED"); |
| ASUS_HANDLE(bt_switch, ASUS_HOTK_PREFIX "BLED"); |
| ASUS_HANDLE(wireless_status, ASUS_HOTK_PREFIX "RSTS"); /* All new models */ |
| |
| /* Brightness */ |
| ASUS_HANDLE(brightness_set, ASUS_HOTK_PREFIX "SPLV"); |
| ASUS_HANDLE(brightness_get, ASUS_HOTK_PREFIX "GPLV"); |
| |
| /* Backlight */ |
| ASUS_HANDLE(lcd_switch, "\\_SB.PCI0.SBRG.EC0._Q10", /* All new models */ |
| "\\_SB.PCI0.ISA.EC0._Q10", /* A1x */ |
| "\\_SB.PCI0.PX40.ECD0._Q10", /* L3C */ |
| "\\_SB.PCI0.PX40.EC0.Q10", /* M1A */ |
| "\\_SB.PCI0.LPCB.EC0._Q10", /* P30 */ |
| "\\_SB.PCI0.PX40.Q10", /* S1x */ |
| "\\Q10"); /* A2x, L2D, L3D, M2E */ |
| |
| /* Display */ |
| ASUS_HANDLE(display_set, ASUS_HOTK_PREFIX "SDSP"); |
| ASUS_HANDLE(display_get, "\\_SB.PCI0.P0P1.VGA.GETD", /* A6B, A6K A6R A7D F3JM L4R M6R A3G |
| M6A M6V VX-1 V6J V6V W3Z */ |
| "\\_SB.PCI0.P0P2.VGA.GETD", /* A3E A4K, A4D A4L A6J A7J A8J Z71V M9V |
| S5A M5A z33A W1Jc W2V */ |
| "\\_SB.PCI0.P0P3.VGA.GETD", /* A6V A6Q */ |
| "\\_SB.PCI0.P0PA.VGA.GETD", /* A6T, A6M */ |
| "\\_SB.PCI0.PCI1.VGAC.NMAP", /* L3C */ |
| "\\_SB.PCI0.VGA.GETD", /* Z96F */ |
| "\\ACTD", /* A2D */ |
| "\\ADVG", /* A4G Z71A W1N W5A W5F M2N M3N M5N M6N S1N S5N */ |
| "\\DNXT", /* P30 */ |
| "\\INFB", /* A2H D1 L2D L3D L3H L2E L5D L5C M1A M2E L4L W3V */ |
| "\\SSTE"); /* A3F A6F A3N A3L M6N W3N W6A */ |
| |
| ASUS_HANDLE(ls_switch, ASUS_HOTK_PREFIX "ALSC"); /* Z71A Z71V */ |
| ASUS_HANDLE(ls_level, ASUS_HOTK_PREFIX "ALSL"); /* Z71A Z71V */ |
| |
| /* |
| * This is the main structure, we can use it to store anything interesting |
| * about the hotk device |
| */ |
| struct asus_hotk { |
| char *name; //laptop name |
| 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 |
| u8 light_level; //light sensor level |
| u8 light_switch; //light sensor switch value |
| u16 event_count[128]; //count for each event TODO make this better |
| }; |
| |
| /* |
| * 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 declaration |
| */ |
| static int asus_hotk_add(struct acpi_device *device); |
| static int asus_hotk_remove(struct acpi_device *device, int type); |
| static struct acpi_driver asus_hotk_driver = { |
| .name = ASUS_HOTK_NAME, |
| .class = ASUS_HOTK_CLASS, |
| .ids = ASUS_HOTK_HID, |
| .ops = { |
| .add = asus_hotk_add, |
| .remove = asus_hotk_remove, |
| }, |
| }; |
| |
| /* The backlight device /sys/class/backlight */ |
| static struct backlight_device *asus_backlight_device; |
| |
| /* |
| * The backlight class declaration |
| */ |
| static int read_brightness(struct backlight_device *bd); |
| static int update_bl_status(struct backlight_device *bd); |
| static struct backlight_ops asusbl_ops = { |
| .get_brightness = read_brightness, |
| .update_status = update_bl_status, |
| }; |
| |
| /* These functions actually update the LED's, and are called from a |
| * workqueue. By doing this as separate work rather than when the LED |
| * subsystem asks, we avoid messing with the Asus ACPI stuff during a |
| * potentially bad time, such as a timer interrupt. */ |
| static struct workqueue_struct *led_workqueue; |
| |
| #define ASUS_LED(object, ledname) \ |
| static void object##_led_set(struct led_classdev *led_cdev, \ |
| enum led_brightness value); \ |
| static void object##_led_update(struct work_struct *ignored); \ |
| static int object##_led_wk; \ |
| static DECLARE_WORK(object##_led_work, object##_led_update); \ |
| static struct led_classdev object##_led = { \ |
| .name = "asus:" ledname, \ |
| .brightness_set = object##_led_set, \ |
| } |
| |
| ASUS_LED(mled, "mail"); |
| ASUS_LED(tled, "touchpad"); |
| ASUS_LED(rled, "record"); |
| ASUS_LED(pled, "phone"); |
| ASUS_LED(gled, "gaming"); |
| |
| /* |
| * 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 (an int here) |
| 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_wireless_status(int mask) |
| { |
| ulong status; |
| acpi_status rv = AE_OK; |
| |
| if (!wireless_status_handle) |
| return (hotk->status & mask) ? 1 : 0; |
| |
| rv = acpi_evaluate_integer(wireless_status_handle, NULL, NULL, &status); |
| if (ACPI_FAILURE(rv)) |
| printk(ASUS_WARNING "Error reading Wireless status\n"); |
| else |
| return (status & mask) ? 1 : 0; |
| |
| return (hotk->status & mask) ? 1 : 0; |
| } |
| |
| /* Generic LED functions */ |
| static int read_status(int mask) |
| { |
| /* There is a special method for both wireless devices */ |
| if (mask == BT_ON || mask == WL_ON) |
| return read_wireless_status(mask); |
| |
| return (hotk->status & mask) ? 1 : 0; |
| } |
| |
| static void write_status(acpi_handle handle, int out, int mask) |
| { |
| hotk->status = (out) ? (hotk->status | mask) : (hotk->status & ~mask); |
| |
| switch (mask) { |
| case MLED_ON: |
| out = !out & 0x1; |
| break; |
| case GLED_ON: |
| out = (out & 0x1) + 1; |
| break; |
| default: |
| out &= 0x1; |
| break; |
| } |
| |
| if (handle && !write_acpi_int(handle, NULL, out, NULL)) |
| printk(ASUS_WARNING " write failed %x\n", mask); |
| } |
| |
| /* /sys/class/led handlers */ |
| #define ASUS_LED_HANDLER(object, mask) \ |
| static void object##_led_set(struct led_classdev *led_cdev, \ |
| enum led_brightness value) \ |
| { \ |
| object##_led_wk = value; \ |
| queue_work(led_workqueue, &object##_led_work); \ |
| } \ |
| static void object##_led_update(struct work_struct *ignored) \ |
| { \ |
| int value = object##_led_wk; \ |
| write_status(object##_set_handle, value, (mask)); \ |
| } |
| |
| ASUS_LED_HANDLER(mled, MLED_ON); |
| ASUS_LED_HANDLER(pled, PLED_ON); |
| ASUS_LED_HANDLER(rled, RLED_ON); |
| ASUS_LED_HANDLER(tled, TLED_ON); |
| ASUS_LED_HANDLER(gled, GLED_ON); |
| |
| static int get_lcd_state(void) |
| { |
| return read_status(LCD_ON); |
| } |
| |
| static int set_lcd_state(int value) |
| { |
| int lcd = 0; |
| acpi_status status = 0; |
| |
| lcd = value ? 1 : 0; |
| |
| if (lcd == get_lcd_state()) |
| return 0; |
| |
| if (lcd_switch_handle) { |
| status = acpi_evaluate_object(lcd_switch_handle, |
| NULL, NULL, NULL); |
| |
| if (ACPI_FAILURE(status)) |
| printk(ASUS_WARNING "Error switching LCD\n"); |
| } |
| |
| write_status(NULL, lcd, LCD_ON); |
| return 0; |
| } |
| |
| static void lcd_blank(int blank) |
| { |
| struct backlight_device *bd = asus_backlight_device; |
| |
| if (bd) { |
| bd->props.power = blank; |
| backlight_update_status(bd); |
| } |
| } |
| |
| static int read_brightness(struct backlight_device *bd) |
| { |
| ulong value; |
| acpi_status rv = AE_OK; |
| |
| rv = acpi_evaluate_integer(brightness_get_handle, NULL, NULL, &value); |
| if (ACPI_FAILURE(rv)) |
| printk(ASUS_WARNING "Error reading brightness\n"); |
| |
| return value; |
| } |
| |
| static int set_brightness(struct backlight_device *bd, int value) |
| { |
| int ret = 0; |
| |
| value = (0 < value) ? ((15 < value) ? 15 : value) : 0; |
| /* 0 <= value <= 15 */ |
| |
| if (!write_acpi_int(brightness_set_handle, NULL, value, NULL)) { |
| printk(ASUS_WARNING "Error changing brightness\n"); |
| ret = -EIO; |
| } |
| |
| return ret; |
| } |
| |
| static int update_bl_status(struct backlight_device *bd) |
| { |
| int rv; |
| int value = bd->props.brightness; |
| |
| rv = set_brightness(bd, value); |
| if (rv) |
| return rv; |
| |
| value = (bd->props.power == FB_BLANK_UNBLANK) ? 1 : 0; |
| return set_lcd_state(value); |
| } |
| |
| /* |
| * Platform device 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 |
| */ |
| static ssize_t show_infos(struct device *dev, |
| struct device_attribute *attr, char *page) |
| { |
| int len = 0; |
| ulong temp; |
| char buf[16]; //enough for all info |
| acpi_status rv = AE_OK; |
| |
| /* |
| * We use the easy way, we don't care of off and count, so we don't set eof |
| * to 1 |
| */ |
| |
| len += sprintf(page, ASUS_HOTK_NAME " " ASUS_LAPTOP_VERSION "\n"); |
| len += sprintf(page + len, "Model reference : %s\n", hotk->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. |
| */ |
| rv = acpi_evaluate_integer(hotk->handle, "SFUN", NULL, &temp); |
| if (!ACPI_FAILURE(rv)) |
| len += sprintf(page + len, "SFUN value : 0x%04x\n", |
| (uint) 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. |
| */ |
| rv = acpi_evaluate_integer(hotk->handle, "ASYM", NULL, &temp); |
| if (!ACPI_FAILURE(rv)) |
| len += sprintf(page + len, "ASYM value : 0x%04x\n", |
| (uint) temp); |
| if (asus_info) { |
| snprintf(buf, 16, "%d", asus_info->length); |
| len += sprintf(page + len, "DSDT length : %s\n", buf); |
| snprintf(buf, 16, "%d", asus_info->checksum); |
| len += sprintf(page + len, "DSDT checksum : %s\n", buf); |
| snprintf(buf, 16, "%d", asus_info->revision); |
| len += sprintf(page + len, "DSDT revision : %s\n", buf); |
| snprintf(buf, 7, "%s", asus_info->oem_id); |
| len += sprintf(page + len, "OEM id : %s\n", buf); |
| snprintf(buf, 9, "%s", asus_info->oem_table_id); |
| len += sprintf(page + len, "OEM table id : %s\n", buf); |
| snprintf(buf, 16, "%x", asus_info->oem_revision); |
| len += sprintf(page + len, "OEM revision : 0x%s\n", buf); |
| snprintf(buf, 5, "%s", asus_info->asl_compiler_id); |
| len += sprintf(page + len, "ASL comp vendor id : %s\n", buf); |
| snprintf(buf, 16, "%x", asus_info->asl_compiler_revision); |
| len += sprintf(page + len, "ASL comp revision : 0x%s\n", buf); |
| } |
| |
| return len; |
| } |
| |
| static int parse_arg(const char *buf, unsigned long count, int *val) |
| { |
| if (!count) |
| return 0; |
| if (count > 31) |
| return -EINVAL; |
| if (sscanf(buf, "%i", val) != 1) |
| return -EINVAL; |
| return count; |
| } |
| |
| static ssize_t store_status(const char *buf, size_t count, |
| acpi_handle handle, int mask) |
| { |
| int rv, value; |
| int out = 0; |
| |
| rv = parse_arg(buf, count, &value); |
| if (rv > 0) |
| out = value ? 1 : 0; |
| |
| write_status(handle, out, mask); |
| |
| return rv; |
| } |
| |
| /* |
| * LEDD display |
| */ |
| static ssize_t show_ledd(struct device *dev, |
| struct device_attribute *attr, char *buf) |
| { |
| return sprintf(buf, "0x%08x\n", hotk->ledd_status); |
| } |
| |
| static ssize_t store_ledd(struct device *dev, struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| int rv, value; |
| |
| rv = parse_arg(buf, count, &value); |
| if (rv > 0) { |
| if (!write_acpi_int(ledd_set_handle, NULL, value, NULL)) |
| printk(ASUS_WARNING "LED display write failed\n"); |
| else |
| hotk->ledd_status = (u32) value; |
| } |
| return rv; |
| } |
| |
| /* |
| * WLAN |
| */ |
| static ssize_t show_wlan(struct device *dev, |
| struct device_attribute *attr, char *buf) |
| { |
| return sprintf(buf, "%d\n", read_status(WL_ON)); |
| } |
| |
| static ssize_t store_wlan(struct device *dev, struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| return store_status(buf, count, wl_switch_handle, WL_ON); |
| } |
| |
| /* |
| * Bluetooth |
| */ |
| static ssize_t show_bluetooth(struct device *dev, |
| struct device_attribute *attr, char *buf) |
| { |
| return sprintf(buf, "%d\n", read_status(BT_ON)); |
| } |
| |
| static ssize_t store_bluetooth(struct device *dev, |
| struct device_attribute *attr, const char *buf, |
| size_t count) |
| { |
| return store_status(buf, count, bt_switch_handle, BT_ON); |
| } |
| |
| /* |
| * Display |
| */ |
| static void set_display(int value) |
| { |
| /* no sanity check needed for now */ |
| if (!write_acpi_int(display_set_handle, NULL, value, NULL)) |
| printk(ASUS_WARNING "Error setting display\n"); |
| return; |
| } |
| |
| static int read_display(void) |
| { |
| ulong value = 0; |
| acpi_status rv = AE_OK; |
| |
| /* In most of the case, we know how to set the display, but sometime |
| we can't read it */ |
| if (display_get_handle) { |
| rv = acpi_evaluate_integer(display_get_handle, NULL, |
| NULL, &value); |
| if (ACPI_FAILURE(rv)) |
| printk(ASUS_WARNING "Error reading display status\n"); |
| } |
| |
| value &= 0x0F; /* needed for some models, shouldn't hurt others */ |
| |
| return value; |
| } |
| |
| /* |
| * Now, *this* one could be more user-friendly, but so far, no-one has |
| * complained. The significance of bits is the same as in store_disp() |
| */ |
| static ssize_t show_disp(struct device *dev, |
| struct device_attribute *attr, char *buf) |
| { |
| return sprintf(buf, "%d\n", read_display()); |
| } |
| |
| /* |
| * Experimental support for display switching. As of now: 1 should activate |
| * the LCD output, 2 should do for CRT, 4 for TV-Out and 8 for DVI. |
| * Any combination (bitwise) of these will suffice. I never actually tested 4 |
| * displays hooked up simultaneously, so be warned. See the acpi4asus README |
| * for more info. |
| */ |
| static ssize_t store_disp(struct device *dev, struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| int rv, value; |
| |
| rv = parse_arg(buf, count, &value); |
| if (rv > 0) |
| set_display(value); |
| return rv; |
| } |
| |
| /* |
| * Light Sens |
| */ |
| static void set_light_sens_switch(int value) |
| { |
| if (!write_acpi_int(ls_switch_handle, NULL, value, NULL)) |
| printk(ASUS_WARNING "Error setting light sensor switch\n"); |
| hotk->light_switch = value; |
| } |
| |
| static ssize_t show_lssw(struct device *dev, |
| struct device_attribute *attr, char *buf) |
| { |
| return sprintf(buf, "%d\n", hotk->light_switch); |
| } |
| |
| static ssize_t store_lssw(struct device *dev, struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| int rv, value; |
| |
| rv = parse_arg(buf, count, &value); |
| if (rv > 0) |
| set_light_sens_switch(value ? 1 : 0); |
| |
| return rv; |
| } |
| |
| static void set_light_sens_level(int value) |
| { |
| if (!write_acpi_int(ls_level_handle, NULL, value, NULL)) |
| printk(ASUS_WARNING "Error setting light sensor level\n"); |
| hotk->light_level = value; |
| } |
| |
| static ssize_t show_lslvl(struct device *dev, |
| struct device_attribute *attr, char *buf) |
| { |
| return sprintf(buf, "%d\n", hotk->light_level); |
| } |
| |
| static ssize_t store_lslvl(struct device *dev, struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| int rv, value; |
| |
| rv = parse_arg(buf, count, &value); |
| if (rv > 0) { |
| value = (0 < value) ? ((15 < value) ? 15 : value) : 0; |
| /* 0 <= value <= 15 */ |
| set_light_sens_level(value); |
| } |
| |
| return rv; |
| } |
| |
| static void asus_hotk_notify(acpi_handle handle, u32 event, void *data) |
| { |
| /* TODO Find a better way to handle events count. */ |
| if (!hotk) |
| return; |
| |
| /* |
| * We need to tell the backlight device when the backlight power is |
| * switched |
| */ |
| if (event == ATKD_LCD_ON) { |
| write_status(NULL, 1, LCD_ON); |
| lcd_blank(FB_BLANK_UNBLANK); |
| } else if (event == ATKD_LCD_OFF) { |
| write_status(NULL, 0, LCD_ON); |
| lcd_blank(FB_BLANK_POWERDOWN); |
| } |
| |
| acpi_bus_generate_event(hotk->device, event, |
| hotk->event_count[event % 128]++); |
| |
| return; |
| } |
| |
| #define ASUS_CREATE_DEVICE_ATTR(_name) \ |
| struct device_attribute dev_attr_##_name = { \ |
| .attr = { \ |
| .name = __stringify(_name), \ |
| .mode = 0, \ |
| .owner = THIS_MODULE }, \ |
| .show = NULL, \ |
| .store = NULL, \ |
| } |
| |
| #define ASUS_SET_DEVICE_ATTR(_name, _mode, _show, _store) \ |
| do { \ |
| dev_attr_##_name.attr.mode = _mode; \ |
| dev_attr_##_name.show = _show; \ |
| dev_attr_##_name.store = _store; \ |
| } while(0) |
| |
| static ASUS_CREATE_DEVICE_ATTR(infos); |
| static ASUS_CREATE_DEVICE_ATTR(wlan); |
| static ASUS_CREATE_DEVICE_ATTR(bluetooth); |
| static ASUS_CREATE_DEVICE_ATTR(display); |
| static ASUS_CREATE_DEVICE_ATTR(ledd); |
| static ASUS_CREATE_DEVICE_ATTR(ls_switch); |
| static ASUS_CREATE_DEVICE_ATTR(ls_level); |
| |
| static struct attribute *asuspf_attributes[] = { |
| &dev_attr_infos.attr, |
| &dev_attr_wlan.attr, |
| &dev_attr_bluetooth.attr, |
| &dev_attr_display.attr, |
| &dev_attr_ledd.attr, |
| &dev_attr_ls_switch.attr, |
| &dev_attr_ls_level.attr, |
| NULL |
| }; |
| |
| static struct attribute_group asuspf_attribute_group = { |
| .attrs = asuspf_attributes |
| }; |
| |
| static struct platform_driver asuspf_driver = { |
| .driver = { |
| .name = ASUS_HOTK_FILE, |
| .owner = THIS_MODULE, |
| } |
| }; |
| |
| static struct platform_device *asuspf_device; |
| |
| static void asus_hotk_add_fs(void) |
| { |
| ASUS_SET_DEVICE_ATTR(infos, 0444, show_infos, NULL); |
| |
| if (wl_switch_handle) |
| ASUS_SET_DEVICE_ATTR(wlan, 0644, show_wlan, store_wlan); |
| |
| if (bt_switch_handle) |
| ASUS_SET_DEVICE_ATTR(bluetooth, 0644, |
| show_bluetooth, store_bluetooth); |
| |
| if (display_set_handle && display_get_handle) |
| ASUS_SET_DEVICE_ATTR(display, 0644, show_disp, store_disp); |
| else if (display_set_handle) |
| ASUS_SET_DEVICE_ATTR(display, 0200, NULL, store_disp); |
| |
| if (ledd_set_handle) |
| ASUS_SET_DEVICE_ATTR(ledd, 0644, show_ledd, store_ledd); |
| |
| if (ls_switch_handle && ls_level_handle) { |
| ASUS_SET_DEVICE_ATTR(ls_level, 0644, show_lslvl, store_lslvl); |
| ASUS_SET_DEVICE_ATTR(ls_switch, 0644, show_lssw, store_lssw); |
| } |
| } |
| |
| static int asus_handle_init(char *name, acpi_handle * handle, |
| char **paths, int num_paths) |
| { |
| int i; |
| acpi_status status; |
| |
| for (i = 0; i < num_paths; i++) { |
| status = acpi_get_handle(NULL, paths[i], handle); |
| if (ACPI_SUCCESS(status)) |
| return 0; |
| } |
| |
| *handle = NULL; |
| return -ENODEV; |
| } |
| |
| #define ASUS_HANDLE_INIT(object) \ |
| asus_handle_init(#object, &object##_handle, object##_paths, \ |
| ARRAY_SIZE(object##_paths)) |
| |
| /* |
| * 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; |
| ulong bsts_result, hwrs_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)) |
| printk(ASUS_WARNING "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)) { |
| printk(ASUS_ERR "Hotkey initialization failed\n"); |
| return -ENODEV; |
| } |
| |
| /* This needs to be called for some laptops to init properly */ |
| status = |
| acpi_evaluate_integer(hotk->handle, "BSTS", NULL, &bsts_result); |
| if (ACPI_FAILURE(status)) |
| printk(ASUS_WARNING "Error calling BSTS\n"); |
| else if (bsts_result) |
| printk(ASUS_NOTICE "BSTS called, 0x%02x returned\n", |
| (uint) bsts_result); |
| |
| /* This too ... */ |
| write_acpi_int(hotk->handle, "CWAP", wapf, NULL); |
| |
| /* |
| * 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: |
| string = ""; |
| break; |
| } |
| } |
| hotk->name = kstrdup(string, GFP_KERNEL); |
| if (!hotk->name) |
| return -ENOMEM; |
| |
| if (*string) |
| printk(ASUS_NOTICE " %s model detected\n", string); |
| |
| ASUS_HANDLE_INIT(mled_set); |
| ASUS_HANDLE_INIT(tled_set); |
| ASUS_HANDLE_INIT(rled_set); |
| ASUS_HANDLE_INIT(pled_set); |
| ASUS_HANDLE_INIT(gled_set); |
| |
| ASUS_HANDLE_INIT(ledd_set); |
| |
| /* |
| * The HWRS method return informations about the hardware. |
| * 0x80 bit is for WLAN, 0x100 for Bluetooth. |
| * The significance of others is yet to be found. |
| * If we don't find the method, we assume the device are present. |
| */ |
| status = |
| acpi_evaluate_integer(hotk->handle, "HRWS", NULL, &hwrs_result); |
| if (ACPI_FAILURE(status)) |
| hwrs_result = WL_HWRS | BT_HWRS; |
| |
| if (hwrs_result & WL_HWRS) |
| ASUS_HANDLE_INIT(wl_switch); |
| if (hwrs_result & BT_HWRS) |
| ASUS_HANDLE_INIT(bt_switch); |
| |
| ASUS_HANDLE_INIT(wireless_status); |
| |
| ASUS_HANDLE_INIT(brightness_set); |
| ASUS_HANDLE_INIT(brightness_get); |
| |
| ASUS_HANDLE_INIT(lcd_switch); |
| |
| ASUS_HANDLE_INIT(display_set); |
| ASUS_HANDLE_INIT(display_get); |
| |
| /* There is a lot of models with "ALSL", but a few get |
| a real light sens, so we need to check it. */ |
| if (ASUS_HANDLE_INIT(ls_switch)) |
| ASUS_HANDLE_INIT(ls_level); |
| |
| kfree(model); |
| |
| return AE_OK; |
| } |
| |
| 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 { |
| printk(ASUS_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; |
| |
| if (!device) |
| return -EINVAL; |
| |
| printk(ASUS_NOTICE "Asus Laptop Support version %s\n", |
| ASUS_LAPTOP_VERSION); |
| |
| hotk = kmalloc(sizeof(struct asus_hotk), GFP_KERNEL); |
| if (!hotk) |
| return -ENOMEM; |
| memset(hotk, 0, sizeof(struct asus_hotk)); |
| |
| hotk->handle = device->handle; |
| strcpy(acpi_device_name(device), ASUS_HOTK_DEVICE_NAME); |
| strcpy(acpi_device_class(device), ASUS_HOTK_CLASS); |
| acpi_driver_data(device) = hotk; |
| hotk->device = device; |
| |
| result = asus_hotk_check(); |
| if (result) |
| goto end; |
| |
| asus_hotk_add_fs(); |
| |
| /* |
| * We install the handler, it will receive the hotk in parameter, so, we |
| * could add other data to the hotk struct |
| */ |
| status = acpi_install_notify_handler(hotk->handle, ACPI_SYSTEM_NOTIFY, |
| asus_hotk_notify, hotk); |
| if (ACPI_FAILURE(status)) |
| printk(ASUS_ERR "Error installing notify handler\n"); |
| |
| asus_hotk_found = 1; |
| |
| /* WLED and BLED are on by default */ |
| write_status(bt_switch_handle, 1, BT_ON); |
| write_status(wl_switch_handle, 1, WL_ON); |
| |
| /* If the h/w switch is off, we need to check the real status */ |
| write_status(NULL, read_status(BT_ON), BT_ON); |
| write_status(NULL, read_status(WL_ON), WL_ON); |
| |
| /* LCD Backlight is on by default */ |
| write_status(NULL, 1, LCD_ON); |
| |
| /* LED display is off by default */ |
| hotk->ledd_status = 0xFFF; |
| |
| /* Set initial values of light sensor and level */ |
| hotk->light_switch = 1; /* Default to light sensor disabled */ |
| hotk->light_level = 0; /* level 5 for sensor sensitivity */ |
| |
| if (ls_switch_handle) |
| set_light_sens_switch(hotk->light_switch); |
| |
| if (ls_level_handle) |
| set_light_sens_level(hotk->light_level); |
| |
| end: |
| if (result) { |
| kfree(hotk->name); |
| kfree(hotk); |
| } |
| |
| return result; |
| } |
| |
| static int asus_hotk_remove(struct acpi_device *device, int type) |
| { |
| acpi_status status = 0; |
| |
| if (!device || !acpi_driver_data(device)) |
| return -EINVAL; |
| |
| status = acpi_remove_notify_handler(hotk->handle, ACPI_SYSTEM_NOTIFY, |
| asus_hotk_notify); |
| if (ACPI_FAILURE(status)) |
| printk(ASUS_ERR "Error removing notify handler\n"); |
| |
| kfree(hotk->name); |
| kfree(hotk); |
| |
| return 0; |
| } |
| |
| static void asus_backlight_exit(void) |
| { |
| if (asus_backlight_device) |
| backlight_device_unregister(asus_backlight_device); |
| } |
| |
| #define ASUS_LED_UNREGISTER(object) \ |
| if(object##_led.class_dev \ |
| && !IS_ERR(object##_led.class_dev)) \ |
| led_classdev_unregister(&object##_led) |
| |
| static void asus_led_exit(void) |
| { |
| ASUS_LED_UNREGISTER(mled); |
| ASUS_LED_UNREGISTER(tled); |
| ASUS_LED_UNREGISTER(pled); |
| ASUS_LED_UNREGISTER(rled); |
| ASUS_LED_UNREGISTER(gled); |
| |
| destroy_workqueue(led_workqueue); |
| } |
| |
| static void __exit asus_laptop_exit(void) |
| { |
| asus_backlight_exit(); |
| asus_led_exit(); |
| |
| acpi_bus_unregister_driver(&asus_hotk_driver); |
| sysfs_remove_group(&asuspf_device->dev.kobj, &asuspf_attribute_group); |
| platform_device_unregister(asuspf_device); |
| platform_driver_unregister(&asuspf_driver); |
| } |
| |
| static int asus_backlight_init(struct device *dev) |
| { |
| struct backlight_device *bd; |
| |
| if (brightness_set_handle && lcd_switch_handle) { |
| bd = backlight_device_register(ASUS_HOTK_FILE, dev, |
| NULL, &asusbl_ops); |
| if (IS_ERR(bd)) { |
| printk(ASUS_ERR |
| "Could not register asus backlight device\n"); |
| asus_backlight_device = NULL; |
| return PTR_ERR(bd); |
| } |
| |
| asus_backlight_device = bd; |
| |
| bd->props.max_brightness = 15; |
| bd->props.brightness = read_brightness(NULL); |
| bd->props.power = FB_BLANK_UNBLANK; |
| backlight_update_status(bd); |
| } |
| return 0; |
| } |
| |
| static int asus_led_register(acpi_handle handle, |
| struct led_classdev *ldev, struct device *dev) |
| { |
| if (!handle) |
| return 0; |
| |
| return led_classdev_register(dev, ldev); |
| } |
| |
| #define ASUS_LED_REGISTER(object, device) \ |
| asus_led_register(object##_set_handle, &object##_led, device) |
| |
| static int asus_led_init(struct device *dev) |
| { |
| int rv; |
| |
| rv = ASUS_LED_REGISTER(mled, dev); |
| if (rv) |
| return rv; |
| |
| rv = ASUS_LED_REGISTER(tled, dev); |
| if (rv) |
| return rv; |
| |
| rv = ASUS_LED_REGISTER(rled, dev); |
| if (rv) |
| return rv; |
| |
| rv = ASUS_LED_REGISTER(pled, dev); |
| if (rv) |
| return rv; |
| |
| rv = ASUS_LED_REGISTER(gled, dev); |
| if (rv) |
| return rv; |
| |
| led_workqueue = create_singlethread_workqueue("led_workqueue"); |
| if (!led_workqueue) |
| return -ENOMEM; |
| |
| return 0; |
| } |
| |
| static int __init asus_laptop_init(void) |
| { |
| struct device *dev; |
| int result; |
| |
| if (acpi_disabled) |
| return -ENODEV; |
| |
| result = acpi_bus_register_driver(&asus_hotk_driver); |
| if (result < 0) |
| return result; |
| |
| /* |
| * 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); |
| return -ENODEV; |
| } |
| |
| dev = acpi_get_physical_device(hotk->device->handle); |
| |
| result = asus_backlight_init(dev); |
| if (result) |
| goto fail_backlight; |
| |
| result = asus_led_init(dev); |
| if (result) |
| goto fail_led; |
| |
| /* Register platform stuff */ |
| result = platform_driver_register(&asuspf_driver); |
| if (result) |
| goto fail_platform_driver; |
| |
| asuspf_device = platform_device_alloc(ASUS_HOTK_FILE, -1); |
| if (!asuspf_device) { |
| result = -ENOMEM; |
| goto fail_platform_device1; |
| } |
| |
| result = platform_device_add(asuspf_device); |
| if (result) |
| goto fail_platform_device2; |
| |
| result = sysfs_create_group(&asuspf_device->dev.kobj, |
| &asuspf_attribute_group); |
| if (result) |
| goto fail_sysfs; |
| |
| return 0; |
| |
| fail_sysfs: |
| platform_device_del(asuspf_device); |
| |
| fail_platform_device2: |
| platform_device_put(asuspf_device); |
| |
| fail_platform_device1: |
| platform_driver_unregister(&asuspf_driver); |
| |
| fail_platform_driver: |
| asus_led_exit(); |
| |
| fail_led: |
| asus_backlight_exit(); |
| |
| fail_backlight: |
| |
| return result; |
| } |
| |
| module_init(asus_laptop_init); |
| module_exit(asus_laptop_exit); |