patch-2.4.22 linux-2.4.22/drivers/acpi/asus_acpi.c
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- Lines: 953
- Date:
2003-08-25 04:44:40.000000000 -0700
- Orig file:
linux-2.4.21/drivers/acpi/asus_acpi.c
- Orig date:
1969-12-31 16:00:00.000000000 -0800
diff -urN linux-2.4.21/drivers/acpi/asus_acpi.c linux-2.4.22/drivers/acpi/asus_acpi.c
@@ -0,0 +1,952 @@
+/*
+ * asus_acpi.c - Asus Laptop ACPI Extras
+ *
+ *
+ * Copyright (C) 2002, 2003 Julien Lerouge, 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:
+ * Johann Wiesner - Small compile fixes
+ * John Belmonte - ACPI code for Toshiba laptop was a good starting point.
+ *
+ * TODO
+ * add Fn key status
+ * Add mode selection on module loading (parameter) -> still necessary ?
+ * Complete display switching -- may require dirty hacks?
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/types.h>
+#include <linux/proc_fs.h>
+#include <acpi/acpi_drivers.h>
+#include <acpi/acpi_bus.h>
+
+#define ASUS_ACPI_VERSION "0.24a"
+
+#define PROC_ASUS "asus" //the directory
+#define PROC_MLED "mled"
+#define PROC_WLED "wled"
+#define PROC_INFOS "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"
+#define ACPI_HOTK_HID "ATK0100"
+
+/*
+ * Some events we use, same for all Asus
+ */
+#define BR_UP 0x10
+#define BR_DOWN 0x20
+
+/*
+ * Flags for hotk status
+ */
+#define MLED_ON 0x01 //is MLED ON ?
+#define WLED_ON 0x02
+
+MODULE_AUTHOR("Julien Lerouge, Karol Kozimor");
+MODULE_DESCRIPTION(ACPI_HOTK_NAME);
+MODULE_LICENSE("GPL");
+EXPORT_NO_SYMBOLS;
+
+
+static uid_t asus_uid = 0;
+static gid_t asus_gid = 0;
+MODULE_PARM(asus_uid, "i");
+MODULE_PARM_DESC(uid, "UID for entries in /proc/acpi/asus.\n");
+MODULE_PARM(asus_gid, "i");
+MODULE_PARM_DESC(gid, "GID for entries in /proc/acpi/asus.\n");
+
+
+/* For each model, all features implemented */
+struct model_data {
+ char *name; //name of the laptop
+ char *mt_mled; //method to handle mled
+ char *mled_status; //node to handle mled reading
+ char *mt_wled; //method to handle wled
+ char *wled_status; //node to handle wled reading
+ char *mt_lcd_switch; //method to turn LCD ON/OFF
+ char *lcd_status; //node to read LCD panel state
+ char *brightness_up; //method to set brightness up
+ char *brightness_down; //guess what ?
+ char *brightness_set; //method to set absolute brightness
+ char *brightness_get; //method to get absolute brightness
+ char *brightness_status;//node to get brightness
+ char *display_set; //method to set video output
+ char *display_get; //method to get video output
+};
+
+/*
+ * 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, ...
+ struct model_data *methods; //methods available on the laptop
+ u8 brightness; //brighness level
+ enum {
+ L2X = 0, //L200D -> TODO check Q11 (Fn+F8)
+ // Calling this method simply hang the
+ // computer, ISMI method hangs the laptop.
+ L3X, //L3C
+ L3D, //L3400D
+ M2X, //M2400E
+ S1X, //S1300A -> TODO special keys do not work ?
+ D1X, //D1
+ L1X, //L1400B
+ A1X, //A1340D, A1300F
+ J1X, //S200 (J1)
+ //TODO A1370D does not seems to have a ATK device
+ // L8400 model doesn't have ATK
+ END_MODEL,
+ } model; //Models currently supported
+ u16 event_count[128]; //count for each event TODO make this better
+};
+
+/* Here we go */
+#define L3X_PREFIX "\\_SB.PCI0.PX40.ECD0."
+#define S1X_PREFIX "\\_SB.PCI0.PX40."
+#define L1X_PREFIX S1X_PREFIX
+#define A1X_PREFIX "\\_SB.PCI0.ISA.EC0."
+#define J1X_PREFIX A1X_PREFIX
+
+static struct model_data model_conf[END_MODEL] = {
+ /*
+ * name| mled |mled read| wled |wled read| lcd sw |lcd read |
+ * br up|br down | br set | br read | br status|set disp | get disp
+ *
+ * br set and read shall be in hotk device !
+ * same for set disp
+ *
+ * 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 ?
+ *
+ */
+ {"L2X", "MLED", "\\SGP6", "WLED", "\\RCP3", "\\Q10", "\\SGP0",
+ "\\Q0E", "\\Q0F", NULL, NULL, NULL, "SDSP", "\\INFB"},
+
+ {"L3X", "MLED", NULL, "WLED", NULL, L3X_PREFIX "_Q10", "\\GL32",
+ L3X_PREFIX "_Q0F", L3X_PREFIX "_Q0E", "SPLV", "GPLV", "\\BLVL", "SDSP",
+ "\\_SB.PCI0.PCI1.VGAC.NMAP"},
+
+ {"L3D", "MLED", "\\MALD", "WLED", NULL, "\\Q10", "\\BKLG",
+ "\\Q0E", "\\Q0F", "SPLV", "GPLV", "\\BLVL", "SDSP", "\\INFB"},
+
+ {"M2X", "MLED", NULL, "WLED", NULL, "\\Q10", "\\GP06",
+ "\\Q0E","\\Q0F", "SPLV", "GPLV", NULL, "SDSP", "\\INFB"},
+
+ {"S1X", "MLED", "\\EMLE", "WLED", NULL, S1X_PREFIX "Q10", "\\PNOF",
+ S1X_PREFIX "Q0F", S1X_PREFIX "Q0E", "SPLV", "GPLV", "\\BRIT", NULL, NULL},
+
+ {"D1X", "MLED", NULL, NULL, NULL, "\\Q0D", "\\GP11",
+ "\\Q0C", "\\Q0B", NULL, NULL, "\\BLVL", "SDSP","\\INFB"},
+
+ {"L1X", "MLED", NULL, "WLED", NULL, L1X_PREFIX "Q10", "\\PNOF",
+ L1X_PREFIX "Q0F", L1X_PREFIX "Q0E", "SPLV", "GPLV", "\\BRIT", NULL, NULL},
+
+ {"A1X", "MLED", "\\MAIL", NULL, NULL, A1X_PREFIX "_Q10", "\\BKLI",
+ A1X_PREFIX "_Q0E", A1X_PREFIX "_Q0F", NULL, NULL, NULL, NULL, NULL},
+
+ {"J1X", "MLED", "\\MAIL", NULL, NULL, J1X_PREFIX "_Q10", "\\BKLI",
+ J1X_PREFIX "_Q0B", J1X_PREFIX "_Q0A", NULL, NULL, NULL, NULL, NULL}
+};
+
+/* procdir we use */
+static struct proc_dir_entry *asus_proc_dir = NULL;
+
+/*
+ * 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 = NULL;
+
+/*
+ * 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 = ACPI_HOTK_NAME,
+ .class = ACPI_HOTK_CLASS,
+ .ids = ACPI_HOTK_HID,
+ .ops = {
+ .add = asus_hotk_add,
+ .remove = asus_hotk_remove,
+ },
+};
+
+/*
+ * 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_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);
+}
+
+/*
+ * 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 int
+proc_read_info(char *page, char **start, off_t off, int count, int *eof,
+ void *data)
+{
+ int len = 0;
+ struct asus_hotk *hotk = (struct asus_hotk *) data;
+ char buf[16]; //enough for all info
+ /*
+ * We use the easy way, we don't care of off and count, so we don't set eof
+ * to 1
+ */
+
+ len += sprintf(page, ACPI_HOTK_NAME " " ASUS_ACPI_VERSION "\n");
+ len +=
+ sprintf(page + len, "Model reference : %s\n",
+ hotk->methods->name);
+ if (asus_info) {
+ snprintf(buf, 5, "%s", asus_info->signature);
+ len += sprintf(page + len, "ACPI signature : %s\n", buf);
+ snprintf(buf, 16, "%d", asus_info->length);
+ len += sprintf(page + len, "Table length : %s\n", buf);
+ snprintf(buf, 16, "%d", asus_info->revision);
+ len += sprintf(page + len, "ACPI minor version : %s\n", buf);
+ snprintf(buf, 16, "%d", asus_info->checksum);
+ len += sprintf(page + len, "Checksum : %s\n", buf);
+ snprintf(buf, 7, "%s", asus_info->oem_id);
+ len += sprintf(page + len, "OEM identification : %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 rev number : 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 rev number: 0x%s\n", buf);
+ }
+
+ return len;
+}
+
+
+/*
+ * proc file handlers
+ */
+static int
+proc_read_mled(char *page, char **start, off_t off, int count, int *eof,
+ void *data)
+{
+ int len = 0;
+ struct asus_hotk *hotk = (struct asus_hotk *) data;
+ int led_status = 0;
+ /*
+ * We use the easy way, we don't care of off and count, so we don't set eof
+ * to 1
+ */
+ if (hotk->methods->mled_status) {
+ if (read_acpi_int(NULL, hotk->methods->mled_status,
+ &led_status))
+ len = sprintf(page, "%d\n", led_status);
+ else
+ printk(KERN_NOTICE "Asus ACPI: Error reading MLED "
+ "status\n");
+ } else {
+ len = sprintf(page, "%d\n", (hotk->status & MLED_ON) ? 1 : 0);
+ }
+
+ return len;
+}
+
+
+static int
+proc_write_mled(struct file *file, const char *buffer,
+ unsigned long count, void *data)
+{
+ int value;
+ int led_out = 0;
+ struct asus_hotk *hotk = (struct asus_hotk *) data;
+
+
+
+ /* scan expression. Multiple expressions may be delimited with ; */
+ if (sscanf(buffer, "%i", &value) == 1)
+ led_out = ~value & 1;
+
+ hotk->status =
+ (value) ? (hotk->status | MLED_ON) : (hotk->status & ~MLED_ON);
+
+ /* We don't have to check mt_mled exists if we are here :) */
+ if (!write_acpi_int(hotk->handle, hotk->methods->mt_mled, led_out,
+ NULL))
+ printk(KERN_NOTICE "Asus ACPI: MLED write failed\n");
+
+
+
+ return count;
+}
+
+/*
+ * 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 int
+proc_read_wled(char *page, char **start, off_t off, int count, int *eof,
+ void *data)
+{
+ int len = 0;
+ struct asus_hotk *hotk = (struct asus_hotk *) data;
+ int led_status;
+
+ if (hotk->methods->wled_status) {
+ if (read_acpi_int(NULL, hotk->methods->mled_status,
+ &led_status))
+ len = sprintf(page, "%d\n", led_status);
+ else
+ printk(KERN_NOTICE "Asus ACPI: Error reading WLED "
+ "status\n");
+ } else {
+ len = sprintf(page, "%d\n", (hotk->status & WLED_ON) ? 1 : 0);
+ }
+
+ return len;
+}
+
+static int
+proc_write_wled(struct file *file, const char *buffer,
+ unsigned long count, void *data)
+{
+ int value;
+ int led_out = 0;
+ struct asus_hotk *hotk = (struct asus_hotk *) data;
+
+ /* scan expression. Multiple expressions may be delimited with ; */
+ if (sscanf(buffer, "%i", &value) == 1)
+ led_out = value & 1;
+
+ hotk->status =
+ (value) ? (hotk->status | WLED_ON) : (hotk->status & ~WLED_ON);
+
+ /* We don't have to check if mt_wled exists if we are here :) */
+ if (!write_acpi_int(hotk->handle, hotk->methods->mt_wled, led_out,
+ NULL))
+ printk(KERN_NOTICE "Asus ACPI: WLED write failed\n");
+
+
+ return count;
+}
+
+
+static int get_lcd_state(struct asus_hotk *hotk)
+{
+ int lcd = 0;
+
+ /* We don't have to check anything, if we are here */
+ if (!read_acpi_int(NULL, hotk->methods->lcd_status, &lcd))
+ printk(KERN_NOTICE "Asus ACPI: Error reading LCD status\n");
+
+ if (hotk->model == L2X)
+ lcd = ~lcd;
+
+ return (lcd & 1);
+}
+
+
+static int
+proc_read_lcd(char *page, char **start, off_t off, int count, int *eof,
+ void *data)
+{
+ return sprintf(page, "%d\n", get_lcd_state((struct asus_hotk *) data));
+}
+
+
+static int
+proc_write_lcd(struct file *file, const char *buffer,
+ unsigned long count, void *data)
+{
+ int value;
+ int lcd = 0;
+ acpi_status status = 0;
+ int lcd_status = 0;
+ struct asus_hotk *hotk = (struct asus_hotk *) data;
+
+ /* scan expression. Multiple expressions may be delimited with ; */
+ if (sscanf(buffer, "%i", &value) == 1)
+ lcd = value & 1;
+
+ lcd_status = get_lcd_state(hotk);
+
+ if (lcd_status != lcd) {
+ /* switch */
+ status =
+ acpi_evaluate_object(NULL, hotk->methods->mt_lcd_switch,
+ NULL, NULL);
+ if (ACPI_FAILURE(status))
+ printk(KERN_NOTICE "Asus ACPI: Error switching LCD\n");
+ }
+
+ return count;
+}
+
+
+/*
+ * Change the brightness level
+ */
+static void set_brightness(int value, struct asus_hotk *hotk)
+{
+ acpi_status status = 0;
+
+ /* ATKD laptop */
+ if(hotk->methods->brightness_set) {
+ if (!write_acpi_int(hotk->handle, hotk->methods->brightness_set,
+ value, NULL))
+ printk(KERN_NOTICE "Asus ACPI: Error changing brightness\n");
+ return;
+ }
+
+ /* HOTK laptop if we are here, act as appropriate */
+ value -= hotk->brightness;
+ 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))
+ printk(KERN_NOTICE "Asus ACPI: Error changing brightness\n");
+ }
+ return;
+}
+
+static int read_brightness(struct asus_hotk *hotk)
+{
+ int value;
+
+ if(hotk->methods->brightness_get) { /* ATKD laptop */
+ if (!read_acpi_int(hotk->handle, hotk->methods->brightness_get,
+ &value))
+ printk(KERN_NOTICE "Asus ACPI: Error reading brightness\n");
+ } else if (hotk->methods->brightness_status) { /* For D1 for example */
+ if (!read_acpi_int(NULL, hotk->methods->brightness_status,
+ &value))
+ printk(KERN_NOTICE "Asus ACPI: Error reading brightness\n");
+ } else /* HOTK laptop */
+ value = hotk->brightness;
+ return value;
+}
+
+static int
+proc_read_brn(char *page, char **start, off_t off, int count, int *eof,
+ void *data)
+{
+ struct asus_hotk *hotk = (struct asus_hotk *) data;
+ return sprintf(page, "%d\n", read_brightness(hotk));
+}
+
+static int
+proc_write_brn(struct file *file, const char *buffer,
+ unsigned long count, void *data)
+{
+ int value;
+ struct asus_hotk *hotk = (struct asus_hotk *) data;
+
+ /* scan expression. Multiple expressions may be delimited with ; */
+ if (sscanf(buffer, "%d", &value) == 1) {
+ value = (0 < value) ? ((15 < value) ? 15 : value) : 0;
+ /* 0 <= value <= 15 */
+ set_brightness(value, hotk);
+ } else {
+ printk(KERN_NOTICE "Asus ACPI: Error reading user input\n");
+ }
+
+ return count;
+}
+
+static void set_display(int value, struct asus_hotk *hotk)
+{
+ /* no sanity check needed for now */
+ if (!write_acpi_int(hotk->handle, hotk->methods->display_set,
+ value, NULL))
+ printk(KERN_NOTICE "Asus ACPI: 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
+proc_read_disp(char *page, char **start, off_t off, int count, int *eof,
+ void *data)
+{
+ int value = 0;
+ struct asus_hotk *hotk = (struct asus_hotk *) data;
+
+ if (!read_acpi_int(hotk->handle, hotk->methods->display_get, &value))
+ printk(KERN_NOTICE "Asus ACPI: Error reading display status\n");
+ return sprintf(page, "%d\n", value);
+}
+
+/*
+ * Preliminary support for display switching. As of now: 0x01 should activate
+ * the LCD output, 0x02 should do for CRT, and 0x04 for TV-Out. Any combination
+ * (bitwise) of these will suffice. I never actually tested 3 displays hooked up
+ * simultaneously, so be warned.
+ */
+
+static int
+proc_write_disp(struct file *file, const char *buffer,
+ unsigned long count, void *data)
+{
+ int value;
+ struct asus_hotk *hotk = (struct asus_hotk *) data;
+
+ /* scan expression. Multiple expressions may be delimited with ; */
+ if (sscanf(buffer, "%d", &value) == 1)
+ set_display(value, hotk);
+ else {
+ printk(KERN_NOTICE "Asus ACPI: Error reading user input\n");
+ }
+
+ return count;
+}
+
+static int asus_hotk_add_fs(struct acpi_device *device)
+{
+ struct proc_dir_entry *proc;
+ struct asus_hotk *hotk = acpi_driver_data(device);
+ mode_t mode;
+
+ /*
+ * If parameter uid or gid is not changed, keep the default setting for
+ * our proc entries (-rw-rw-rw-) else, it means we care about security,
+ * and then set to -rw-rw----
+ */
+
+ if ((asus_uid == 0) && (asus_gid == 0)){
+ mode = S_IFREG | S_IRUGO | S_IWUGO;
+ }else{
+ mode = S_IFREG | S_IRUSR | S_IRGRP | S_IWUSR | S_IWGRP;
+ }
+
+ acpi_device_dir(device) = asus_proc_dir;
+ if (!acpi_device_dir(device))
+ return(-ENODEV);
+
+ proc = create_proc_entry(PROC_INFOS, mode, acpi_device_dir(device));
+ if (proc) {
+ proc->read_proc = proc_read_info;
+ proc->data = acpi_driver_data(device);
+ proc->owner = THIS_MODULE;
+ proc->uid = asus_uid;
+ proc->gid = asus_gid;;
+ } else {
+ printk(KERN_NOTICE " Unable to create " PROC_INFOS
+ " fs entry\n");
+ }
+
+ if (hotk->methods->mt_wled) {
+ proc = create_proc_entry(PROC_WLED, mode, acpi_device_dir(device));
+ if (proc) {
+ proc->write_proc = proc_write_wled;
+ proc->read_proc = proc_read_wled;
+ proc->data = acpi_driver_data(device);
+ proc->owner = THIS_MODULE;
+ proc->uid = asus_uid;
+ proc->gid = asus_gid;;
+ } else {
+ printk(KERN_NOTICE " Unable to create " PROC_WLED
+ " fs entry\n");
+ }
+ }
+
+ if (hotk->methods->mt_mled) {
+ proc = create_proc_entry(PROC_MLED, mode, acpi_device_dir(device));
+ if (proc) {
+ proc->write_proc = proc_write_mled;
+ proc->read_proc = proc_read_mled;
+ proc->data = acpi_driver_data(device);
+ proc->owner = THIS_MODULE;
+ proc->uid = asus_uid;
+ proc->gid = asus_gid;;
+ } else {
+ printk(KERN_NOTICE " Unable to create " PROC_MLED
+ " fs entry\n");
+ }
+ }
+
+ /*
+ * We need both read node and write method as LCD switch is also accessible
+ * from keyboard
+ */
+ if (hotk->methods->mt_lcd_switch && hotk->methods->lcd_status) {
+ proc = create_proc_entry(PROC_LCD, mode, acpi_device_dir(device));
+ if (proc) {
+ proc->write_proc = proc_write_lcd;
+ proc->read_proc = proc_read_lcd;
+ proc->data = acpi_driver_data(device);
+ proc->owner = THIS_MODULE;
+ proc->uid = asus_uid;
+ proc->gid = asus_gid;;
+ } else {
+ printk(KERN_NOTICE " Unable to create " PROC_LCD
+ " fs entry\n");
+ }
+ }
+
+ if ((hotk->methods->brightness_up && hotk->methods->brightness_down) ||
+ (hotk->methods->brightness_get && hotk->methods->brightness_get)) {
+ proc = create_proc_entry(PROC_BRN, mode, acpi_device_dir(device));
+ if (proc) {
+ proc->write_proc = proc_write_brn;
+ proc->read_proc = proc_read_brn;
+ proc->data = acpi_driver_data(device);
+ proc->owner = THIS_MODULE;
+ proc->uid = asus_uid;
+ proc->gid = asus_gid;;
+ } else {
+ printk(KERN_NOTICE " Unable to create " PROC_BRN
+ " fs entry\n");
+ }
+ }
+
+ if (hotk->methods->display_set) {
+ proc = create_proc_entry(PROC_DISP, mode, acpi_device_dir(device));
+ if (proc) {
+ proc->write_proc = proc_write_disp;
+ proc->read_proc = proc_read_disp;
+ proc->data = acpi_driver_data(device);
+ proc->owner = THIS_MODULE;
+ proc->uid = asus_uid;
+ proc->gid = asus_gid;;
+ } else {
+ printk(KERN_NOTICE " Unable to create " PROC_DISP
+ " fs entry\n");
+ }
+ }
+
+ return (AE_OK);
+}
+
+
+static void asus_hotk_notify(acpi_handle handle, u32 event, void *data)
+{
+ /* TODO Find a better way to handle events count. Here, in data, we receive
+ * the hotk, so we can make anything !!
+ */
+ struct asus_hotk *hotk = (struct asus_hotk *) data;
+
+ if (!hotk)
+ 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_event(hotk->device, event,
+ hotk->event_count[event % 128]++);
+
+ return;
+}
+
+/*
+ * 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(struct asus_hotk *hotk)
+{
+ struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
+ union acpi_object *model = NULL;
+
+ /*
+ * We have to write 0 on init this far for all ASUS models
+ */
+ if (!write_acpi_int(hotk->handle, "INIT", 0, &buffer)) {
+ printk(KERN_NOTICE " Hotkey initialization failed\n");
+ return -ENODEV;
+ }
+
+ /*
+ * Here, we also use asus_info to make decision. For example, on INIT
+ * method, S1X and L1X models both reports to be L84F, but they don't
+ * have the same methods (L1X has WLED, S1X don't)
+ */
+ model = (union acpi_object *) buffer.pointer;
+ if (model->type == ACPI_TYPE_STRING) {
+ printk(KERN_NOTICE " %s model detected, ", model->string.pointer);
+ }
+
+ hotk->model = END_MODEL;
+ if (strncmp(model->string.pointer, "L3D", 3) == 0)
+ hotk->model = L3D;
+ /*
+ * L2B has same settings that L3X, except for GL32, but as
+ * there is no node to get the LCD status, and as GL32 is never
+ * used anywhere else, I assume it's safe, even if lcd get is
+ * broken for this model (TODO fix it ?)
+ */
+ else if (strncmp(model->string.pointer, "L3", 2) == 0 ||
+ strncmp(model->string.pointer, "L2B", 3) == 0)
+ hotk->model = L3X;
+ else if (strncmp(model->string.pointer, "M2", 2) == 0)
+ hotk->model = M2X;
+ else if (strncmp(model->string.pointer, "L2", 2) == 0)
+ hotk->model = L2X;
+ else if (strncmp(model->string.pointer, "L8", 2) == 0)
+ /* S1300A reports L84F, but L1400B too */
+ if (strncmp(asus_info->oem_table_id, "L1", 2) == 0)
+ hotk->model = L1X;
+ else
+ hotk->model = S1X;
+ else if (strncmp(model->string.pointer, "D1", 2) == 0)
+ hotk->model = D1X;
+ else if (strncmp(model->string.pointer, "A1", 2) == 0)
+ hotk->model = A1X;
+ else if (strncmp(model->string.pointer, "J1", 2) == 0)
+ hotk->model = J1X;
+
+
+ if (hotk->model == END_MODEL) {
+ /* By default use the same values, as I don't know others */
+ printk("unsupported, trying default values, contact the "
+ "developers\n");
+ hotk->model = L2X;
+ } else {
+ printk("supported\n");
+ }
+
+ hotk->methods = &model_conf[hotk->model];
+
+ acpi_os_free(model);
+
+ return AE_OK;
+}
+
+
+
+static int asus_hotk_check(struct asus_hotk *hotk)
+{
+ int result = 0;
+
+ if (!hotk)
+ return(-EINVAL);
+
+ result = acpi_bus_get_status(hotk->device);
+ if (result)
+ return(result);
+
+ if (hotk->device->status.present) {
+ result = asus_hotk_get_info(hotk);
+ } else {
+ printk(KERN_NOTICE " Hotkey device not present, aborting\n");
+ return(-EINVAL);
+ }
+
+ return(result);
+}
+
+
+
+static int asus_hotk_add(struct acpi_device *device)
+{
+ struct asus_hotk *hotk = NULL;
+ acpi_status status = AE_OK;
+ int result;
+
+ if (!device)
+ return(-EINVAL);
+
+ hotk =
+ (struct asus_hotk *) kmalloc(sizeof(struct asus_hotk), GFP_KERNEL);
+ if (!hotk)
+ return(-ENOMEM);
+ memset(hotk, 0, sizeof(struct asus_hotk));
+
+ hotk->handle = device->handle;
+ sprintf(acpi_device_name(device), "%s", ACPI_HOTK_DEVICE_NAME);
+ sprintf(acpi_device_class(device), "%s", ACPI_HOTK_CLASS);
+ acpi_driver_data(device) = hotk;
+ hotk->device = device;
+
+
+ result = asus_hotk_check(hotk);
+ if (result)
+ goto end;
+
+ result = asus_hotk_add_fs(device);
+ if (result)
+ goto end;
+
+ /*
+ * 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(KERN_NOTICE
+ " Error installing notify handler\n");
+ } else {
+ printk(KERN_DEBUG
+ " Notify Handler installed successfully\n");
+ }
+
+ /* For HOTK laptops: 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))
+ printk(KERN_NOTICE " Error changing brightness\n");
+ status = acpi_evaluate_object(NULL, hotk->methods->brightness_up,
+ NULL, NULL);
+ if (ACPI_FAILURE(status))
+ printk(KERN_NOTICE " Error changing brightness\n");
+ }
+
+ end:
+ if (result) {
+ kfree(hotk);
+ }
+
+ return(result);
+}
+
+
+
+
+static int asus_hotk_remove(struct acpi_device *device, int type)
+{
+ acpi_status status = 0;
+ struct asus_hotk *hotk = NULL;
+
+ if (!device || !acpi_driver_data(device))
+ return(-EINVAL);
+
+ hotk = (struct asus_hotk *) acpi_driver_data(device);
+
+ status = acpi_remove_notify_handler(hotk->handle, ACPI_SYSTEM_NOTIFY,
+ asus_hotk_notify);
+ if (ACPI_FAILURE(status))
+ printk(KERN_NOTICE "Error removing notify handler\n");
+
+ kfree(hotk);
+
+ return(0);
+}
+
+
+
+
+static int __init asus_acpi_init(void)
+{
+ int result = 0;
+ acpi_status status = 0;
+ struct acpi_buffer dsdt = { ACPI_ALLOCATE_BUFFER, NULL };
+
+ printk(KERN_NOTICE "Asus Laptop ACPI Extras version %s\n",
+ ASUS_ACPI_VERSION);
+ /*
+ * Here is the code to know the model we are running on. We need to
+ * know this before calling the acpi_bus_register_driver function, in
+ * case the HID for the laptop we are running on is different from
+ * ACPI_HOTK_HID, which I have never seen yet :)
+ *
+ * This information is then available in the global var asus_info
+ */
+ status = acpi_get_table(ACPI_TABLE_DSDT, 1, &dsdt);
+ if (ACPI_FAILURE(status)) {
+ printk(KERN_NOTICE " Couldn't get the DSDT table header\n");
+ } else {
+ asus_info = (struct acpi_table_header *) dsdt.pointer;
+ }
+
+ asus_proc_dir = proc_mkdir(PROC_ASUS, acpi_root_dir);
+ if (!asus_proc_dir)
+ return(-ENODEV);
+ asus_proc_dir->owner = THIS_MODULE;
+
+ result = acpi_bus_register_driver(&asus_hotk_driver);
+ if (result < 0) {
+ printk(KERN_NOTICE " Error registering " ACPI_HOTK_NAME " \n");
+ remove_proc_entry(PROC_ASUS, acpi_root_dir);
+ return(-ENODEV);
+ }
+
+ return(0);
+}
+
+
+
+static void __exit asus_acpi_exit(void)
+{
+ acpi_bus_unregister_driver(&asus_hotk_driver);
+ remove_proc_entry(PROC_ASUS, acpi_root_dir);
+
+ acpi_os_free(asus_info);
+
+ return;
+}
+
+module_init(asus_acpi_init);
+module_exit(asus_acpi_exit);
FUNET's LINUX-ADM group, linux-adm@nic.funet.fi
TCL-scripts by Sam Shen (who was at: slshen@lbl.gov)