diff options
Diffstat (limited to 'drivers/acpi/hotkey.c')
| -rw-r--r-- | drivers/acpi/hotkey.c | 1019 |
1 files changed, 0 insertions, 1019 deletions
diff --git a/drivers/acpi/hotkey.c b/drivers/acpi/hotkey.c deleted file mode 100644 index babdf762ead..00000000000 --- a/drivers/acpi/hotkey.c +++ /dev/null @@ -1,1019 +0,0 @@ -/* - * hotkey.c - ACPI Hotkey Driver ($Revision:$) - * - * Copyright (C) 2004 Luming Yu <luming.yu@intel.com> - * - * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ - * - * 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. - * - * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ - */ -#include <linux/kernel.h> -#include <linux/module.h> -#include <linux/init.h> -#include <linux/types.h> -#include <linux/proc_fs.h> -#include <linux/sched.h> -#include <linux/kmod.h> -#include <linux/seq_file.h> -#include <acpi/acpi_drivers.h> -#include <acpi/acpi_bus.h> -#include <asm/uaccess.h> - -#define HOTKEY_ACPI_VERSION "0.1" - -#define HOTKEY_PROC "hotkey" -#define HOTKEY_EV_CONFIG "event_config" -#define HOTKEY_PL_CONFIG "poll_config" -#define HOTKEY_ACTION "action" -#define HOTKEY_INFO "info" - -#define ACPI_HOTK_NAME "Generic Hotkey Driver" -#define ACPI_HOTK_CLASS "Hotkey" -#define ACPI_HOTK_DEVICE_NAME "Hotkey" -#define ACPI_HOTK_HID "Unknown?" -#define ACPI_HOTKEY_COMPONENT 0x20000000 - -#define ACPI_HOTKEY_EVENT 0x1 -#define ACPI_HOTKEY_POLLING 0x2 -#define ACPI_UNDEFINED_EVENT 0xf - -#define MAX_CONFIG_RECORD_LEN 80 -#define MAX_NAME_PATH_LEN 80 -#define MAX_CALL_PARM 80 - -#define IS_EVENT(e) 0xff /* ((e) & 0x40000000) */ -#define IS_POLL(e) 0xff /* (~((e) & 0x40000000)) */ - -#define _COMPONENT ACPI_HOTKEY_COMPONENT -ACPI_MODULE_NAME("acpi_hotkey") - - MODULE_AUTHOR("luming.yu@intel.com"); -MODULE_DESCRIPTION(ACPI_HOTK_NAME); -MODULE_LICENSE("GPL"); - -/* standardized internal hotkey number/event */ -enum { - /* Video Extension event */ - HK_EVENT_CYCLE_OUTPUT_DEVICE = 0x80, - HK_EVENT_OUTPUT_DEVICE_STATUS_CHANGE, - HK_EVENT_CYCLE_DISPLAY_OUTPUT, - HK_EVENT_NEXT_DISPLAY_OUTPUT, - HK_EVENT_PREVIOUS_DISPLAY_OUTPUT, - HK_EVENT_CYCLE_BRIGHTNESS, - HK_EVENT_INCREASE_BRIGHTNESS, - HK_EVENT_DECREASE_BRIGHTNESS, - HK_EVENT_ZERO_BRIGHTNESS, - HK_EVENT_DISPLAY_DEVICE_OFF, - - /* Snd Card event */ - HK_EVENT_VOLUME_MUTE, - HK_EVENT_VOLUME_INCLREASE, - HK_EVENT_VOLUME_DECREASE, - - /* running state control */ - HK_EVENT_ENTERRING_S3, - HK_EVENT_ENTERRING_S4, - HK_EVENT_ENTERRING_S5, -}; - -/* procdir we use */ -static struct proc_dir_entry *hotkey_proc_dir; -static struct proc_dir_entry *hotkey_config; -static struct proc_dir_entry *hotkey_poll_config; -static struct proc_dir_entry *hotkey_action; -static struct proc_dir_entry *hotkey_info; - -/* linkage for all type of hotkey */ -struct acpi_hotkey_link { - struct list_head entries; - int hotkey_type; /* event or polling based hotkey */ - int hotkey_standard_num; /* standardized hotkey(event) number */ -}; - -/* event based hotkey */ -struct acpi_event_hotkey { - struct acpi_hotkey_link hotkey_link; - int flag; - acpi_handle bus_handle; /* bus to install notify handler */ - int external_hotkey_num; /* external hotkey/event number */ - acpi_handle action_handle; /* acpi handle attached aml action method */ - char *action_method; /* action method */ -}; - -/* - * There are two ways to poll status - * 1. directy call read_xxx method, without any arguments passed in - * 2. call write_xxx method, with arguments passed in, you need - * the result is saved in acpi_polling_hotkey.poll_result. - * anthoer read command through polling interface. - * - */ - -/* polling based hotkey */ -struct acpi_polling_hotkey { - struct acpi_hotkey_link hotkey_link; - int flag; - acpi_handle poll_handle; /* acpi handle attached polling method */ - char *poll_method; /* poll method */ - acpi_handle action_handle; /* acpi handle attached action method */ - char *action_method; /* action method */ - void *poll_result; /* polling_result */ - struct proc_dir_entry *proc; -}; - -/* hotkey object union */ -union acpi_hotkey { - struct list_head entries; - struct acpi_hotkey_link link; - struct acpi_event_hotkey event_hotkey; - struct acpi_polling_hotkey poll_hotkey; -}; - -/* hotkey object list */ -struct acpi_hotkey_list { - struct list_head *entries; - int count; -}; - -static int auto_hotkey_add(struct acpi_device *device); -static int auto_hotkey_remove(struct acpi_device *device, int type); - -static struct acpi_driver hotkey_driver = { - .name = ACPI_HOTK_NAME, - .class = ACPI_HOTK_CLASS, - .ids = ACPI_HOTK_HID, - .ops = { - .add = auto_hotkey_add, - .remove = auto_hotkey_remove, - }, -}; - -static int hotkey_open_config(struct inode *inode, struct file *file); -static ssize_t hotkey_write_config(struct file *file, - const char __user * buffer, - size_t count, loff_t * data); -static ssize_t hotkey_write_poll_config(struct file *file, - const char __user * buffer, - size_t count, loff_t * data); -static int hotkey_info_open_fs(struct inode *inode, struct file *file); -static int hotkey_action_open_fs(struct inode *inode, struct file *file); -static ssize_t hotkey_execute_aml_method(struct file *file, - const char __user * buffer, - size_t count, loff_t * data); -static int hotkey_config_seq_show(struct seq_file *seq, void *offset); -static int hotkey_polling_open_fs(struct inode *inode, struct file *file); - -/* event based config */ -static struct file_operations hotkey_config_fops = { - .open = hotkey_open_config, - .read = seq_read, - .write = hotkey_write_config, - .llseek = seq_lseek, - .release = single_release, -}; - -/* polling based config */ -static struct file_operations hotkey_poll_config_fops = { - .open = hotkey_open_config, - .read = seq_read, - .write = hotkey_write_poll_config, - .llseek = seq_lseek, - .release = single_release, -}; - -/* hotkey driver info */ -static struct file_operations hotkey_info_fops = { - .open = hotkey_info_open_fs, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, -}; - -/* action */ -static struct file_operations hotkey_action_fops = { - .open = hotkey_action_open_fs, - .read = seq_read, - .write = hotkey_execute_aml_method, - .llseek = seq_lseek, - .release = single_release, -}; - -/* polling results */ -static struct file_operations hotkey_polling_fops = { - .open = hotkey_polling_open_fs, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, -}; - -struct acpi_hotkey_list global_hotkey_list; /* link all ev or pl hotkey */ -struct list_head hotkey_entries; /* head of the list of hotkey_list */ - -static int hotkey_info_seq_show(struct seq_file *seq, void *offset) -{ - ACPI_FUNCTION_TRACE("hotkey_info_seq_show"); - - seq_printf(seq, "Hotkey generic driver ver: %s", HOTKEY_ACPI_VERSION); - - return_VALUE(0); -} - -static int hotkey_info_open_fs(struct inode *inode, struct file *file) -{ - return single_open(file, hotkey_info_seq_show, PDE(inode)->data); -} - -static char *format_result(union acpi_object *object) -{ - char *buf = (char *)kmalloc(sizeof(union acpi_object), GFP_KERNEL); - - memset(buf, 0, sizeof(union acpi_object)); - - /* Now, just support integer type */ - if (object->type == ACPI_TYPE_INTEGER) - sprintf(buf, "%d", (u32) object->integer.value); - - return buf; -} - -static int hotkey_polling_seq_show(struct seq_file *seq, void *offset) -{ - struct acpi_polling_hotkey *poll_hotkey = - (struct acpi_polling_hotkey *)seq->private; - - ACPI_FUNCTION_TRACE("hotkey_polling_seq_show"); - - if (poll_hotkey->poll_result) - seq_printf(seq, "%s", format_result(poll_hotkey->poll_result)); - - return_VALUE(0); -} - -static int hotkey_polling_open_fs(struct inode *inode, struct file *file) -{ - return single_open(file, hotkey_polling_seq_show, PDE(inode)->data); -} - -static int hotkey_action_open_fs(struct inode *inode, struct file *file) -{ - return single_open(file, hotkey_info_seq_show, PDE(inode)->data); -} - -/* Mapping external hotkey number to standardized hotkey event num */ -static int hotkey_get_internal_event(int event, struct acpi_hotkey_list *list) -{ - struct list_head *entries, *next; - int val = 0; - - ACPI_FUNCTION_TRACE("hotkey_get_internal_event"); - - list_for_each_safe(entries, next, list->entries) { - union acpi_hotkey *key = - container_of(entries, union acpi_hotkey, entries); - if (key->link.hotkey_type == ACPI_HOTKEY_EVENT - && key->event_hotkey.external_hotkey_num == event) - val = key->link.hotkey_standard_num; - else - val = -1; - } - - return_VALUE(val); -} - -static void -acpi_hotkey_notify_handler(acpi_handle handle, u32 event, void *data) -{ - struct acpi_device *device = NULL; - u32 internal_event; - - ACPI_FUNCTION_TRACE("acpi_hotkey_notify_handler"); - - if (acpi_bus_get_device(handle, &device)) - return_VOID; - - internal_event = hotkey_get_internal_event(event, &global_hotkey_list); - acpi_bus_generate_event(device, event, 0); - - return_VOID; -} - -/* Need to invent automatically hotkey add method */ -static int auto_hotkey_add(struct acpi_device *device) -{ - /* Implement me */ - return 0; -} - -/* Need to invent automatically hotkey remove method */ -static int auto_hotkey_remove(struct acpi_device *device, int type) -{ - /* Implement me */ - return 0; -} - -/* Create a proc file for each polling method */ -static int create_polling_proc(union acpi_hotkey *device) -{ - struct proc_dir_entry *proc; - mode_t mode; - - ACPI_FUNCTION_TRACE("create_polling_proc"); - mode = S_IFREG | S_IRUGO | S_IWUGO; - - proc = create_proc_entry(device->poll_hotkey.action_method, - mode, hotkey_proc_dir); - - if (!proc) { - ACPI_DEBUG_PRINT((ACPI_DB_ERROR, - "Hotkey: Unable to create %s entry\n", - device->poll_hotkey.poll_method)); - return_VALUE(-ENODEV); - } else { - proc->proc_fops = &hotkey_polling_fops; - proc->owner = THIS_MODULE; - proc->data = device; - proc->uid = 0; - proc->gid = 0; - device->poll_hotkey.proc = proc; - } - return_VALUE(0); -} - -static int is_valid_acpi_path(const char *pathname) -{ - acpi_handle handle; - acpi_status status; - ACPI_FUNCTION_TRACE("is_valid_acpi_path"); - - status = acpi_get_handle(NULL, (char *)pathname, &handle); - return_VALUE(!ACPI_FAILURE(status)); -} - -static int is_valid_hotkey(union acpi_hotkey *device) -{ - ACPI_FUNCTION_TRACE("is_valid_hotkey"); - /* Implement valid check */ - return_VALUE(1); -} - -static int hotkey_add(union acpi_hotkey *device) -{ - int status = 0; - struct acpi_device *dev = NULL; - - ACPI_FUNCTION_TRACE("hotkey_add"); - - if (device->link.hotkey_type == ACPI_HOTKEY_EVENT) { - status = - acpi_bus_get_device(device->event_hotkey.bus_handle, &dev); - if (status) - return_VALUE(status); - - status = acpi_install_notify_handler(dev->handle, - ACPI_SYSTEM_NOTIFY, - acpi_hotkey_notify_handler, - device); - } else /* Add polling hotkey */ - create_polling_proc(device); - - global_hotkey_list.count++; - - list_add_tail(&device->link.entries, global_hotkey_list.entries); - - return_VALUE(status); -} - -static int hotkey_remove(union acpi_hotkey *device) -{ - struct list_head *entries, *next; - - ACPI_FUNCTION_TRACE("hotkey_remove"); - - list_for_each_safe(entries, next, global_hotkey_list.entries) { - union acpi_hotkey *key = - container_of(entries, union acpi_hotkey, entries); - if (key->link.hotkey_standard_num == - device->link.hotkey_standard_num) { - list_del(&key->link.entries); - remove_proc_entry(key->poll_hotkey.action_method, - hotkey_proc_dir); - global_hotkey_list.count--; - break; - } - } - return_VALUE(0); -} - -static void hotkey_update(union acpi_hotkey *key) -{ - struct list_head *entries, *next; - - ACPI_FUNCTION_TRACE("hotkey_update"); - - list_for_each_safe(entries, next, global_hotkey_list.entries) { - union acpi_hotkey *key = - container_of(entries, union acpi_hotkey, entries); - if (key->link.hotkey_standard_num == - key->link.hotkey_standard_num) { - key->event_hotkey.bus_handle = - key->event_hotkey.bus_handle; - key->event_hotkey.external_hotkey_num = - key->event_hotkey.external_hotkey_num; - key->event_hotkey.action_handle = - key->event_hotkey.action_handle; - key->event_hotkey.action_method = - key->event_hotkey.action_method; - break; - } - } - - return_VOID; -} - -static void free_hotkey_device(union acpi_hotkey *key) -{ - struct acpi_device *dev; - int status; - - ACPI_FUNCTION_TRACE("free_hotkey_device"); - - if (key->link.hotkey_type == ACPI_HOTKEY_EVENT) { - status = - acpi_bus_get_device(key->event_hotkey.bus_handle, &dev); - if (dev->handle) - acpi_remove_notify_handler(dev->handle, - ACPI_SYSTEM_NOTIFY, - acpi_hotkey_notify_handler); - } else - remove_proc_entry(key->poll_hotkey.action_method, - hotkey_proc_dir); - kfree(key); - return_VOID; -} - -static int -init_hotkey_device(union acpi_hotkey *key, char *bus_str, char *action_str, - char *method, int std_num, int external_num) -{ - ACPI_FUNCTION_TRACE("init_hotkey_device"); - - key->link.hotkey_type = ACPI_HOTKEY_EVENT; - key->link.hotkey_standard_num = std_num; - key->event_hotkey.flag = 0; - if (is_valid_acpi_path(bus_str)) - acpi_get_handle((acpi_handle) 0, - bus_str, &(key->event_hotkey.bus_handle)); - else - return_VALUE(-ENODEV); - key->event_hotkey.external_hotkey_num = external_num; - if (is_valid_acpi_path(action_str)) - acpi_get_handle((acpi_handle) 0, - action_str, &(key->event_hotkey.action_handle)); - key->event_hotkey.action_method = kmalloc(sizeof(method), GFP_KERNEL); - strcpy(key->event_hotkey.action_method, method); - - return_VALUE(!is_valid_hotkey(key)); -} - -static int -init_poll_hotkey_device(union acpi_hotkey *key, - char *poll_str, - char *poll_method, - char *action_str, char *action_method, int std_num) -{ - ACPI_FUNCTION_TRACE("init_poll_hotkey_device"); - - key->link.hotkey_type = ACPI_HOTKEY_POLLING; - key->link.hotkey_standard_num = std_num; - key->poll_hotkey.flag = 0; - if (is_valid_acpi_path(poll_str)) - acpi_get_handle((acpi_handle) 0, - poll_str, &(key->poll_hotkey.poll_handle)); - else - return_VALUE(-ENODEV); - key->poll_hotkey.poll_method = poll_method; - if (is_valid_acpi_path(action_str)) - acpi_get_handle((acpi_handle) 0, - action_str, &(key->poll_hotkey.action_handle)); - key->poll_hotkey.action_method = - kmalloc(sizeof(action_method), GFP_KERNEL); - strcpy(key->poll_hotkey.action_method, action_method); - key->poll_hotkey.poll_result = - (union acpi_object *)kmalloc(sizeof(union acpi_object), GFP_KERNEL); - return_VALUE(is_valid_hotkey(key)); -} - -static int check_hotkey_valid(union acpi_hotkey *key, - struct acpi_hotkey_list *list) -{ - ACPI_FUNCTION_TRACE("check_hotkey_valid"); - return_VALUE(0); -} - -static int hotkey_open_config(struct inode *inode, struct file *file) -{ - ACPI_FUNCTION_TRACE("hotkey_open_config"); - return_VALUE(single_open - (file, hotkey_config_seq_show, PDE(inode)->data)); -} - -static int hotkey_config_seq_show(struct seq_file *seq, void *offset) -{ - struct acpi_hotkey_list *hotkey_list = &global_hotkey_list; - struct list_head *entries, *next; - char bus_name[ACPI_PATHNAME_MAX] = { 0 }; - char action_name[ACPI_PATHNAME_MAX] = { 0 }; - struct acpi_buffer bus = { ACPI_PATHNAME_MAX, bus_name }; - struct acpi_buffer act = { ACPI_PATHNAME_MAX, action_name }; - - ACPI_FUNCTION_TRACE(("hotkey_config_seq_show")); - - if (!hotkey_list) - goto end; - - list_for_each_safe(entries, next, hotkey_list->entries) { - union acpi_hotkey *key = - container_of(entries, union acpi_hotkey, entries); - if (key->link.hotkey_type == ACPI_HOTKEY_EVENT) { - acpi_get_name(key->event_hotkey.bus_handle, - ACPI_NAME_TYPE_MAX, &bus); - acpi_get_name(key->event_hotkey.action_handle, - ACPI_NAME_TYPE_MAX, &act); - seq_printf(seq, "%s:%s:%s:%d:%d", bus_name, - action_name, - key->event_hotkey.action_method, - key->link.hotkey_standard_num, - key->event_hotkey.external_hotkey_num); - } /* ACPI_HOTKEY_POLLING */ - else { - acpi_get_name(key->poll_hotkey.poll_handle, - ACPI_NAME_TYPE_MAX, &bus); - acpi_get_name(key->poll_hotkey.action_handle, - ACPI_NAME_TYPE_MAX, &act); - seq_printf(seq, "%s:%s:%s:%s:%d", bus_name, - key->poll_hotkey.poll_method, - action_name, - key->poll_hotkey.action_method, - key->link.hotkey_standard_num); - } - } - seq_puts(seq, "\n"); - end: - return_VALUE(0); -} - -static int -get_parms(char *config_record, - int *cmd, - char *bus_handle, - char *bus_method, - char *action_handle, - char *method, int *internal_event_num, int *external_event_num) -{ - char *tmp, *tmp1; - ACPI_FUNCTION_TRACE(("get_parms")); - - sscanf(config_record, "%d", cmd); - - tmp = strchr(config_record, ':'); - tmp++; - tmp1 = strchr(tmp, ':'); - strncpy(bus_handle, tmp, tmp1 - tmp); - bus_handle[tmp1 - tmp] = 0; - - tmp = tmp1; - tmp++; - tmp1 = strchr(tmp, ':'); - strncpy(bus_method, tmp, tmp1 - tmp); - bus_method[tmp1 - tmp] = 0; - - tmp = tmp1; - tmp++; - tmp1 = strchr(tmp, ':'); - strncpy(action_handle, tmp, tmp1 - tmp); - action_handle[tmp1 - tmp] = 0; - - tmp = tmp1; - tmp++; - tmp1 = strchr(tmp, ':'); - strncpy(method, tmp, tmp1 - tmp); - method[tmp1 - tmp] = 0; - - sscanf(tmp1 + 1, "%d:%d", internal_event_num, external_event_num); - return_VALUE(6); -} - -/* count is length for one input record */ -static ssize_t hotkey_write_config(struct file *file, - const char __user * buffer, - size_t count, loff_t * data) -{ - struct acpi_hotkey_list *hotkey_list = &global_hotkey_list; - char config_record[MAX_CONFIG_RECORD_LEN]; - char bus_handle[MAX_NAME_PATH_LEN]; - char bus_method[MAX_NAME_PATH_LEN]; - char action_handle[MAX_NAME_PATH_LEN]; - char method[20]; - int cmd, internal_event_num, external_event_num; - int ret = 0; - union acpi_hotkey *key = NULL; - - ACPI_FUNCTION_TRACE(("hotkey_write_config")); - - if (!hotkey_list || count > MAX_CONFIG_RECORD_LEN) { - ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Invalid arguments\n")); - return_VALUE(-EINVAL); - } - - if (copy_from_user(config_record, buffer, count)) { - ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Invalid data \n")); - return_VALUE(-EINVAL); - } - config_record[count] = '\0'; - - ret = get_parms(config_record, - &cmd, - bus_handle, - bus_method, - action_handle, - method, &internal_event_num, &external_event_num); - if (ret != 6) { - ACPI_DEBUG_PRINT((ACPI_DB_ERROR, - "Invalid data format ret=%d\n", ret)); - return_VALUE(-EINVAL); - } - - key = kmalloc(sizeof(union acpi_hotkey), GFP_KERNEL); - ret = init_hotkey_device(key, bus_handle, action_handle, method, - internal_event_num, external_event_num); - - if (ret || check_hotkey_valid(key, hotkey_list)) { - kfree(key); - ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Invalid hotkey \n")); - return_VALUE(-EINVAL); - } - switch (cmd) { - case 0: - hotkey_add(key); - break; - case 1: - hotkey_remove(key); - free_hotkey_device(key); - break; - case 2: - hotkey_update(key); - break; - default: - break; - } - return_VALUE(count); -} - -/* count is length for one input record */ -static ssize_t hotkey_write_poll_config(struct file *file, - const char __user * buffer, - size_t count, loff_t * data) -{ - struct seq_file *m = (struct seq_file *)file->private_data; - struct acpi_hotkey_list *hotkey_list = - (struct acpi_hotkey_list *)m->private; - - char config_record[MAX_CONFIG_RECORD_LEN]; - char polling_handle[MAX_NAME_PATH_LEN]; - char action_handle[MAX_NAME_PATH_LEN]; - char poll_method[20], action_method[20]; - int ret, internal_event_num, cmd, external_event_num; - union acpi_hotkey *key = NULL; - - ACPI_FUNCTION_TRACE("hotkey_write_poll_config"); - - if (!hotkey_list || count > MAX_CONFIG_RECORD_LEN) { - ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Invalid arguments\n")); - return_VALUE(-EINVAL); - } - - if (copy_from_user(config_record, buffer, count)) { - ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Invalid data \n")); - return_VALUE(-EINVAL); - } - config_record[count] = '\0'; - - ret = get_parms(config_record, - &cmd, - polling_handle, - poll_method, - action_handle, - action_method, - &internal_event_num, &external_event_num); - - if (ret != 6) { - ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Invalid data format\n")); - return_VALUE(-EINVAL); - } - - key = kmalloc(sizeof(union acpi_hotkey), GFP_KERNEL); - ret = init_poll_hotkey_device(key, polling_handle, poll_method, - action_handle, action_method, - internal_event_num); - if (ret || check_hotkey_valid(key, hotkey_list)) { - kfree(key); - ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Invalid hotkey \n")); - return_VALUE(-EINVAL); - } - switch (cmd) { - case 0: - hotkey_add(key); - break; - case 1: - hotkey_remove(key); - break; - case 2: - hotkey_update(key); - break; - default: - break; - } - return_VALUE(count); -} - -/* - * 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; - - ACPI_FUNCTION_TRACE("write_acpi_int"); - 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_VALUE(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; - - ACPI_FUNCTION_TRACE("read_acpi_int"); - output.length = sizeof(out_obj); - output.pointer = &out_obj; - - status = acpi_evaluate_object(handle, (char *)method, NULL, &output); - *val = out_obj.integer.value; - return_VALUE((status == AE_OK) - && (out_obj.type == ACPI_TYPE_INTEGER)); -} - -static acpi_handle -get_handle_from_hotkeylist(struct acpi_hotkey_list *hotkey_list, int event_num) -{ - struct list_head *entries, *next; - - list_for_each_safe(entries, next, hotkey_list->entries) { - union acpi_hotkey *key = - container_of(entries, union acpi_hotkey, entries); - if (key->link.hotkey_type == ACPI_HOTKEY_EVENT - && key->link.hotkey_standard_num == event_num) { - return (key->event_hotkey.action_handle); - } - } - return (NULL); -} - -static -char *get_method_from_hotkeylist(struct acpi_hotkey_list *hotkey_list, - int event_num) -{ - struct list_head *entries, *next; - - list_for_each_safe(entries, next, hotkey_list->entries) { - union acpi_hotkey *key = - container_of(entries, union acpi_hotkey, entries); - - if (key->link.hotkey_type == ACPI_HOTKEY_EVENT && - key->link.hotkey_standard_num == event_num) - return (key->event_hotkey.action_method); - } - return (NULL); -} - -static struct acpi_polling_hotkey *get_hotkey_by_event(struct - acpi_hotkey_list - *hotkey_list, int event) -{ - struct list_head *entries, *next; - - list_for_each_safe(entries, next, hotkey_list->entries) { - union acpi_hotkey *key = - container_of(entries, union acpi_hotkey, entries); - if (key->link.hotkey_type == ACPI_HOTKEY_POLLING - && key->link.hotkey_standard_num == event) { - return (&key->poll_hotkey); - } - } - return (NULL); -} - -/* - * user call AML method interface: - * Call convention: - * echo "event_num: arg type : value" - * example: echo "1:1:30" > /proc/acpi/action - * Just support 1 integer arg passing to AML method - */ - -static ssize_t hotkey_execute_aml_method(struct file *file, - const char __user * buffer, - size_t count, loff_t * data) -{ - struct acpi_hotkey_list *hotkey_list = &global_hotkey_list; - char arg[MAX_CALL_PARM]; - int event, type, value; - - char *method; - acpi_handle handle; - - ACPI_FUNCTION_TRACE("hotkey_execte_aml_method"); - - if (!hotkey_list || count > MAX_CALL_PARM) { - ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Invalid argument 1")); - return_VALUE(-EINVAL); - } - - if (copy_from_user(arg, buffer, count)) { - ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Invalid argument 2")); - return_VALUE(-EINVAL); - } - - arg[count] = '\0'; - - if (sscanf(arg, "%d:%d:%d", &event, &type, &value) != 3) { - ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Invalid argument 3")); - return_VALUE(-EINVAL); - } - - if (type == ACPI_TYPE_INTEGER) { - handle = get_handle_from_hotkeylist(hotkey_list, event); - method = (char *)get_method_from_hotkeylist(hotkey_list, event); - if (IS_EVENT(event)) - write_acpi_int(handle, method, value, NULL); - else if (IS_POLL(event)) { - struct acpi_polling_hotkey *key; - key = (struct acpi_polling_hotkey *) - get_hotkey_by_event(hotkey_list, event); - read_acpi_int(handle, method, key->poll_result); - } - } else { - ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Not supported")); - return_VALUE(-EINVAL); - } - - return_VALUE(count); -} - -static int __init hotkey_init(void) -{ - int result; - mode_t mode = S_IFREG | S_IRUGO | S_IWUGO; - - ACPI_FUNCTION_TRACE("hotkey_init"); - - if (acpi_disabled) - return -ENODEV; - - if (acpi_specific_hotkey_enabled) { - printk("Using specific hotkey driver\n"); - return -ENODEV; - } - - hotkey_proc_dir = proc_mkdir(HOTKEY_PROC, acpi_root_dir); - if (!hotkey_proc_dir) { - ACPI_DEBUG_PRINT((ACPI_DB_ERROR, - "Hotkey: Unable to create %s entry\n", - HOTKEY_PROC)); - return (-ENODEV); - } - hotkey_proc_dir->owner = THIS_MODULE; - - hotkey_config = - create_proc_entry(HOTKEY_EV_CONFIG, mode, hotkey_proc_dir); - if (!hotkey_config) { - ACPI_DEBUG_PRINT((ACPI_DB_ERROR, - "Hotkey: Unable to create %s entry\n", - HOTKEY_EV_CONFIG)); - return (-ENODEV); - } else { - hotkey_config->proc_fops = &hotkey_config_fops; - hotkey_config->data = &global_hotkey_list; - hotkey_config->owner = THIS_MODULE; - hotkey_config->uid = 0; - hotkey_config->gid = 0; - } - - hotkey_poll_config = - create_proc_entry(HOTKEY_PL_CONFIG, mode, hotkey_proc_dir); - if (!hotkey_poll_config) { - ACPI_DEBUG_PRINT((ACPI_DB_ERROR, - "Hotkey: Unable to create %s entry\n", - HOTKEY_EV_CONFIG)); - return (-ENODEV); - } else { - hotkey_poll_config->proc_fops = &hotkey_poll_config_fops; - hotkey_poll_config->data = &global_hotkey_list; - hotkey_poll_config->owner = THIS_MODULE; - hotkey_poll_config->uid = 0; - hotkey_poll_config->gid = 0; - } - - hotkey_action = create_proc_entry(HOTKEY_ACTION, mode, hotkey_proc_dir); - if (!hotkey_action) { - ACPI_DEBUG_PRINT((ACPI_DB_ERROR, - "Hotkey: Unable to create %s entry\n", - HOTKEY_ACTION)); - return (-ENODEV); - } else { - hotkey_action->proc_fops = &hotkey_action_fops; - hotkey_action->owner = THIS_MODULE; - hotkey_action->uid = 0; - hotkey_action->gid = 0; - } - - hotkey_info = create_proc_entry(HOTKEY_INFO, mode, hotkey_proc_dir); - if (!hotkey_info) { - ACPI_DEBUG_PRINT((ACPI_DB_ERROR, - "Hotkey: Unable to create %s entry\n", - HOTKEY_INFO)); - return (-ENODEV); - } else { - hotkey_info->proc_fops = &hotkey_info_fops; - hotkey_info->owner = THIS_MODULE; - hotkey_info->uid = 0; - hotkey_info->gid = 0; - } - - result = acpi_bus_register_driver(&hotkey_driver); - if (result < 0) { - remove_proc_entry(HOTKEY_PROC, acpi_root_dir); - return (-ENODEV); - } - global_hotkey_list.count = 0; - global_hotkey_list.entries = &hotkey_entries; - - INIT_LIST_HEAD(&hotkey_entries); - - return (0); -} - -static void __exit hotkey_exit(void) -{ - struct list_head *entries, *next; - - ACPI_FUNCTION_TRACE("hotkey_remove"); - - list_for_each_safe(entries, next, global_hotkey_list.entries) { - union acpi_hotkey *key = - container_of(entries, union acpi_hotkey, entries); - - acpi_os_wait_events_complete(NULL); - list_del(&key->link.entries); - global_hotkey_list.count--; - free_hotkey_device(key); - } - acpi_bus_unregister_driver(&hotkey_driver); - remove_proc_entry(HOTKEY_EV_CONFIG, hotkey_proc_dir); - remove_proc_entry(HOTKEY_PL_CONFIG, hotkey_proc_dir); - remove_proc_entry(HOTKEY_ACTION, hotkey_proc_dir); - remove_proc_entry(HOTKEY_INFO, hotkey_proc_dir); - remove_proc_entry(HOTKEY_PROC, acpi_root_dir); - return; -} - -module_init(hotkey_init); -module_exit(hotkey_exit); 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