/* * acpi_button.c - ACPI Button Driver ($Revision: 30 $) * * Copyright (C) 2001, 2002 Andy Grover <andrew.grover@intel.com> * Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@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/seq_file.h>#include <linux/input.h>#include <acpi/acpi_bus.h>#include <acpi/acpi_drivers.h> #define ACPI_BUTTON_COMPONENT 0x00080000#define ACPI_BUTTON_CLASS "button"#define ACPI_BUTTON_FILE_INFO "info"#define ACPI_BUTTON_FILE_STATE "state"#define ACPI_BUTTON_TYPE_UNKNOWN 0x00#define ACPI_BUTTON_NOTIFY_STATUS 0x80 #define ACPI_BUTTON_SUBCLASS_POWER "power"#define ACPI_BUTTON_HID_POWER "PNP0C0C"#define ACPI_BUTTON_DEVICE_NAME_POWER "Power Button (CM)"#define ACPI_BUTTON_DEVICE_NAME_POWERF "Power Button (FF)"#define ACPI_BUTTON_TYPE_POWER 0x01#define ACPI_BUTTON_TYPE_POWERF 0x02 #define ACPI_BUTTON_SUBCLASS_SLEEP "sleep"#define ACPI_BUTTON_HID_SLEEP "PNP0C0E"#define ACPI_BUTTON_DEVICE_NAME_SLEEP "Sleep Button (CM)"#define ACPI_BUTTON_DEVICE_NAME_SLEEPF "Sleep Button (FF)"#define ACPI_BUTTON_TYPE_SLEEP 0x03#define ACPI_BUTTON_TYPE_SLEEPF 0x04 #define ACPI_BUTTON_SUBCLASS_LID "lid"#define ACPI_BUTTON_HID_LID "PNP0C0D"#define ACPI_BUTTON_DEVICE_NAME_LID "Lid Switch"#define ACPI_BUTTON_TYPE_LID 0x05 #define _COMPONENT ACPI_BUTTON_COMPONENTACPI_MODULE_NAME("button"); MODULE_AUTHOR("Paul Diefenbaugh");MODULE_DESCRIPTION("ACPI Button Driver");MODULE_LICENSE("GPL"); static int acpi_button_add(struct acpi_device *device);static int acpi_button_remove(struct acpi_device *device, int type);static int acpi_button_info_open_fs(struct inode *inode, struct file *file);static int acpi_button_state_open_fs(struct inode *inode, struct file *file); static struct acpi_driver acpi_button_driver = { .name = "button", .class = ACPI_BUTTON_CLASS, .ids = "button_power,button_sleep,PNP0C0D,PNP0C0C,PNP0C0E", .ops = { .add = acpi_button_add, .remove = acpi_button_remove, },}; struct acpi_button { struct acpi_device *device; /* Fixed button kludge */ unsigned int type; struct input_dev *input; char phys[32]; /* for input device */ unsigned long pushed;}; static const struct file_operations acpi_button_info_fops = { .open = acpi_button_info_open_fs, .read = seq_read, .llseek = seq_lseek, .release = single_release,}; static const struct file_operations acpi_button_state_fops = { .open = acpi_button_state_open_fs, .read = seq_read, .llseek = seq_lseek, .release = single_release,}; /* -------------------------------------------------------------------------- FS Interface (/proc) -------------------------------------------------------------------------- */ static struct proc_dir_entry *acpi_button_dir; static int acpi_button_info_seq_show(struct seq_file *seq, void *offset){ struct acpi_button *button = seq->private; if (!button || !button->device) return 0; seq_printf(seq, "type: %s\n", acpi_device_name(button->device)); return 0;} static int acpi_button_info_open_fs(struct inode *inode, struct file *file){ return single_open(file, acpi_button_info_seq_show, PDE(inode)->data);} static int acpi_button_state_seq_show(struct seq_file *seq, void *offset){ struct acpi_button *button = seq->private; acpi_status status; unsigned long state; if (!button || !button->device) return 0; status = acpi_evaluate_integer(button->device->handle, "_LID", NULL, &state); seq_printf(seq, "state: %s\n", ACPI_FAILURE(status) ? "unsupported" : (state ? "open" : "closed")); return 0;} static int acpi_button_state_open_fs(struct inode *inode, struct file *file){ return single_open(file, acpi_button_state_seq_show, PDE(inode)->data);} static struct proc_dir_entry *acpi_power_dir;static struct proc_dir_entry *acpi_sleep_dir;static struct proc_dir_entry *acpi_lid_dir; static int acpi_button_add_fs(struct acpi_device *device){ struct proc_dir_entry *entry = NULL; struct acpi_button *button; if (!device || !acpi_driver_data(device)) return -EINVAL; button = acpi_driver_data(device); switch (button->type) { case ACPI_BUTTON_TYPE_POWER: case ACPI_BUTTON_TYPE_POWERF: if (!acpi_power_dir) acpi_power_dir = proc_mkdir(ACPI_BUTTON_SUBCLASS_POWER, acpi_button_dir); entry = acpi_power_dir; break; case ACPI_BUTTON_TYPE_SLEEP: case ACPI_BUTTON_TYPE_SLEEPF: if (!acpi_sleep_dir) acpi_sleep_dir = proc_mkdir(ACPI_BUTTON_SUBCLASS_SLEEP, acpi_button_dir); entry = acpi_sleep_dir; break; case ACPI_BUTTON_TYPE_LID: if (!acpi_lid_dir) acpi_lid_dir = proc_mkdir(ACPI_BUTTON_SUBCLASS_LID, acpi_button_dir); entry = acpi_lid_dir; break; } if (!entry) return -ENODEV; entry->owner = THIS_MODULE; acpi_device_dir(device) = proc_mkdir(acpi_device_bid(device), entry); if (!acpi_device_dir(device)) return -ENODEV; acpi_device_dir(device)->owner = THIS_MODULE; /* 'info' [R] */ entry = create_proc_entry(ACPI_BUTTON_FILE_INFO, S_IRUGO, acpi_device_dir(device)); if (!entry) return -ENODEV; else { entry->proc_fops = &acpi_button_info_fops; entry->data = acpi_driver_data(device); entry->owner = THIS_MODULE; } /* show lid state [R] */ if (button->type == ACPI_BUTTON_TYPE_LID) { entry = create_proc_entry(ACPI_BUTTON_FILE_STATE, S_IRUGO, acpi_device_dir(device)); if (!entry) return -ENODEV; else { entry->proc_fops = &acpi_button_state_fops; entry->data = acpi_driver_data(device); entry->owner = THIS_MODULE; } } return 0;} static int acpi_button_remove_fs(struct acpi_device *device){ struct acpi_button *button = acpi_driver_data(device); if (acpi_device_dir(device)) { if (button->type == ACPI_BUTTON_TYPE_LID) remove_proc_entry(ACPI_BUTTON_FILE_STATE, acpi_device_dir(device)); remove_proc_entry(ACPI_BUTTON_FILE_INFO, acpi_device_dir(device)); remove_proc_entry(acpi_device_bid(device), acpi_device_dir(device)->parent); acpi_device_dir(device) = NULL; } return 0;} /* -------------------------------------------------------------------------- Driver Interface -------------------------------------------------------------------------- */ static void acpi_button_notify(acpi_handle handle, u32 event, void *data){ struct acpi_button *button = data; struct input_dev *input; if (!button || !button->device) return; switch (event) { case ACPI_BUTTON_NOTIFY_STATUS: input = button->input; if (button->type == ACPI_BUTTON_TYPE_LID) { struct acpi_handle *handle = button->device->handle; unsigned long state; if (!ACPI_FAILURE(acpi_evaluate_integer(handle, "_LID", NULL, &state))) input_report_switch(input, SW_LID, !state); } else { int keycode = test_bit(KEY_SLEEP, input->keybit) ? KEY_SLEEP : KEY_POWER; input_report_key(input, keycode, 1); input_sync(input); input_report_key(input, keycode, 0); } input_sync(input); acpi_bus_generate_event(button->device, event, ++button->pushed); break; default: ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Unsupported event [0x%x]\n", event)); break; } return;} static acpi_status acpi_button_notify_fixed(void *data){ struct acpi_button *button = data; if (!button) return AE_BAD_PARAMETER; acpi_button_notify(button->device->handle, ACPI_BUTTON_NOTIFY_STATUS, button); return AE_OK;} static int acpi_button_install_notify_handlers(struct acpi_button *button){ acpi_status status; switch (button->type) { case ACPI_BUTTON_TYPE_POWERF: status = acpi_install_fixed_event_handler(ACPI_EVENT_POWER_BUTTON, acpi_button_notify_fixed, button); break; case ACPI_BUTTON_TYPE_SLEEPF: status = acpi_install_fixed_event_handler(ACPI_EVENT_SLEEP_BUTTON, acpi_button_notify_fixed, button); break; default: status = acpi_install_notify_handler(button->device->handle, ACPI_DEVICE_NOTIFY, acpi_button_notify, button); break; } return ACPI_FAILURE(status) ? -ENODEV : 0;} static void acpi_button_remove_notify_handlers(struct acpi_button *button){ switch (button->type) { case ACPI_BUTTON_TYPE_POWERF: acpi_remove_fixed_event_handler(ACPI_EVENT_POWER_BUTTON, acpi_button_notify_fixed); break; case ACPI_BUTTON_TYPE_SLEEPF: acpi_remove_fixed_event_handler(ACPI_EVENT_SLEEP_BUTTON, acpi_button_notify_fixed); break; default: acpi_remove_notify_handler(button->device->handle, ACPI_DEVICE_NOTIFY, acpi_button_notify); break; }} static int acpi_button_add(struct acpi_device *device){ int error; struct acpi_button *button; struct input_dev *input; if (!device) return -EINVAL; button = kzalloc(sizeof(struct acpi_button), GFP_KERNEL); if (!button) return -ENOMEM; button->device = device; acpi_driver_data(device) = button; button->input = input = input_allocate_device(); if (!input) { error = -ENOMEM; goto err_free_button; } /* * Determine the button type (via hid), as fixed-feature buttons * need to be handled a bit differently than generic-space. */ if (!strcmp(acpi_device_hid(device), ACPI_BUTTON_HID_POWER)) { button->type = ACPI_BUTTON_TYPE_POWER; strcpy(acpi_device_name(device), ACPI_BUTTON_DEVICE_NAME_POWER); sprintf(acpi_device_class(device), "%s/%s", ACPI_BUTTON_CLASS, ACPI_BUTTON_SUBCLASS_POWER); } else if (!strcmp(acpi_device_hid(device), ACPI_BUTTON_HID_POWERF)) { button->type = ACPI_BUTTON_TYPE_POWERF; strcpy(acpi_device_name(device), ACPI_BUTTON_DEVICE_NAME_POWERF); sprintf(acpi_device_class(device), "%s/%s", ACPI_BUTTON_CLASS, ACPI_BUTTON_SUBCLASS_POWER); } else if (!strcmp(acpi_device_hid(device), ACPI_BUTTON_HID_SLEEP)) { button->type = ACPI_BUTTON_TYPE_SLEEP; strcpy(acpi_device_name(device), ACPI_BUTTON_DEVICE_NAME_SLEEP); sprintf(acpi_device_class(device), "%s/%s", ACPI_BUTTON_CLASS, ACPI_BUTTON_SUBCLASS_SLEEP); } else if (!strcmp(acpi_device_hid(device), ACPI_BUTTON_HID_SLEEPF)) { button->type = ACPI_BUTTON_TYPE_SLEEPF; strcpy(acpi_device_name(device), ACPI_BUTTON_DEVICE_NAME_SLEEPF); sprintf(acpi_device_class(device), "%s/%s", ACPI_BUTTON_CLASS, ACPI_BUTTON_SUBCLASS_SLEEP); } else if (!strcmp(acpi_device_hid(device), ACPI_BUTTON_HID_LID)) { button->type = ACPI_BUTTON_TYPE_LID; strcpy(acpi_device_name(device), ACPI_BUTTON_DEVICE_NAME_LID); sprintf(acpi_device_class(device), "%s/%s", ACPI_BUTTON_CLASS, ACPI_BUTTON_SUBCLASS_LID); } else { printk(KERN_ERR PREFIX "Unsupported hid [%s]\n", acpi_device_hid(device)); error = -ENODEV; goto err_free_input; } error = acpi_button_add_fs(device); if (error) goto err_free_input; error = acpi_button_install_notify_handlers(button); if (error) goto err_remove_fs; snprintf(button->phys, sizeof(button->phys), "%s/button/input0", acpi_device_hid(device)); input->name = acpi_device_name(device); input->phys = button->phys; input->id.bustype = BUS_HOST; input->id.product = button->type; switch (button->type) { case ACPI_BUTTON_TYPE_POWER: case ACPI_BUTTON_TYPE_POWERF: input->evbit[0] = BIT(EV_KEY); set_bit(KEY_POWER, input->keybit); break; case ACPI_BUTTON_TYPE_SLEEP: case ACPI_BUTTON_TYPE_SLEEPF: input->evbit[0] = BIT(EV_KEY); set_bit(KEY_SLEEP, input->keybit); break; case ACPI_BUTTON_TYPE_LID: input->evbit[0] = BIT(EV_SW); set_bit(SW_LID, input->swbit); break; } error = input_register_device(input); if (error) goto err_remove_handlers; if (device->wakeup.flags.valid) { /* Button's GPE is run-wake GPE */ acpi_set_gpe_type(device->wakeup.gpe_device, device->wakeup.gpe_number, ACPI_GPE_TYPE_WAKE_RUN); acpi_enable_gpe(device->wakeup.gpe_device, device->wakeup.gpe_number, ACPI_NOT_ISR); device->wakeup.state.enabled = 1; } printk(KERN_INFO PREFIX "%s [%s]\n", acpi_device_name(device), acpi_device_bid(device)); return 0; err_remove_handlers: acpi_button_remove_notify_handlers(button); err_remove_fs: acpi_button_remove_fs(device); err_free_input: input_free_device(input); err_free_button: kfree(button); return error;} static int acpi_button_remove(struct acpi_device *device, int type){ struct acpi_button *button; if (!device || !acpi_driver_data(device)) return -EINVAL; button = acpi_driver_data(device); acpi_button_remove_notify_handlers(button); acpi_button_remove_fs(device); input_unregister_device(button->input); kfree(button); return 0;} static int __init acpi_button_init(void){ int result; acpi_button_dir = proc_mkdir(ACPI_BUTTON_CLASS, acpi_root_dir); if (!acpi_button_dir) return -ENODEV; acpi_button_dir->owner = THIS_MODULE; result = acpi_bus_register_driver(&acpi_button_driver); if (result < 0) { remove_proc_entry(ACPI_BUTTON_CLASS, acpi_root_dir);Lines 1–500 of 521. 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/* * acpi_button.c - ACPI Button Driver ($Revision: 30 $) * * Copyright (C) 2001, 2002 Andy Grover <andrew.grover@intel.com> * Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@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/seq_file.h> #include <linux/input.h> #include <acpi/acpi_bus.h> #include <acpi/acpi_drivers.h> #define ACPI_BUTTON_COMPONENT 0x00080000 #define ACPI_BUTTON_CLASS "button" #define ACPI_BUTTON_FILE_INFO "info" #define ACPI_BUTTON_FILE_STATE "state" #define ACPI_BUTTON_TYPE_UNKNOWN 0x00 #define ACPI_BUTTON_NOTIFY_STATUS 0x80 #define ACPI_BUTTON_SUBCLASS_POWER "power" #define ACPI_BUTTON_HID_POWER "PNP0C0C" #define ACPI_BUTTON_DEVICE_NAME_POWER "Power Button (CM)" #define ACPI_BUTTON_DEVICE_NAME_POWERF "Power Button (FF)" #define ACPI_BUTTON_TYPE_POWER 0x01 #define ACPI_BUTTON_TYPE_POWERF 0x02 #define ACPI_BUTTON_SUBCLASS_SLEEP "sleep" #define ACPI_BUTTON_HID_SLEEP "PNP0C0E" #define ACPI_BUTTON_DEVICE_NAME_SLEEP "Sleep Button (CM)" #define ACPI_BUTTON_DEVICE_NAME_SLEEPF "Sleep Button (FF)" #define ACPI_BUTTON_TYPE_SLEEP 0x03 #define ACPI_BUTTON_TYPE_SLEEPF 0x04 #define ACPI_BUTTON_SUBCLASS_LID "lid" #define ACPI_BUTTON_HID_LID "PNP0C0D" #define ACPI_BUTTON_DEVICE_NAME_LID "Lid Switch" #define ACPI_BUTTON_TYPE_LID 0x05 #define _COMPONENT ACPI_BUTTON_COMPONENT ACPI_MODULE_NAME("button"); MODULE_AUTHOR("Paul Diefenbaugh"); MODULE_DESCRIPTION("ACPI Button Driver"); MODULE_LICENSE("GPL"); static int acpi_button_add(struct acpi_device *device); static int acpi_button_remove(struct acpi_device *device, int type); static int acpi_button_info_open_fs(struct inode *inode, struct file *file); static int acpi_button_state_open_fs(struct inode *inode, struct file *file); static struct acpi_driver acpi_button_driver = { .name = "button", .class = ACPI_BUTTON_CLASS, .ids = "button_power,button_sleep,PNP0C0D,PNP0C0C,PNP0C0E", .ops = { .add = acpi_button_add, .remove = acpi_button_remove, }, }; struct acpi_button { struct acpi_device *device; /* Fixed button kludge */ unsigned int type; struct input_dev *input; char phys[32]; /* for input device */ unsigned long pushed; }; static const struct file_operations acpi_button_info_fops = { .open = acpi_button_info_open_fs, .read = seq_read, .llseek = seq_lseek, .release = single_release, }; static const struct file_operations acpi_button_state_fops = { .open = acpi_button_state_open_fs, .read = seq_read, .llseek = seq_lseek, .release = single_release, }; /* -------------------------------------------------------------------------- FS Interface (/proc) -------------------------------------------------------------------------- */ static struct proc_dir_entry *acpi_button_dir; static int acpi_button_info_seq_show(struct seq_file *seq, void *offset) { struct acpi_button *button = seq->private; if (!button || !button->device) return 0; seq_printf(seq, "type: %s\n", acpi_device_name(button->device)); return 0; } static int acpi_button_info_open_fs(struct inode *inode, struct file *file) { return single_open(file, acpi_button_info_seq_show, PDE(inode)->data); } static int acpi_button_state_seq_show(struct seq_file *seq, void *offset) { struct acpi_button *button = seq->private; acpi_status status; unsigned long state; if (!button || !button->device) return 0; status = acpi_evaluate_integer(button->device->handle, "_LID", NULL, &state); seq_printf(seq, "state: %s\n", ACPI_FAILURE(status) ? "unsupported" : (state ? "open" : "closed")); return 0; } static int acpi_button_state_open_fs(struct inode *inode, struct file *file) { return single_open(file, acpi_button_state_seq_show, PDE(inode)->data); } static struct proc_dir_entry *acpi_power_dir; static struct proc_dir_entry *acpi_sleep_dir; static struct proc_dir_entry *acpi_lid_dir; static int acpi_button_add_fs(struct acpi_device *device) { struct proc_dir_entry *entry = NULL; struct acpi_button *button; if (!device || !acpi_driver_data(device)) return -EINVAL; button = acpi_driver_data(device); switch (button->type) { case ACPI_BUTTON_TYPE_POWER: case ACPI_BUTTON_TYPE_POWERF: if (!acpi_power_dir) acpi_power_dir = proc_mkdir(ACPI_BUTTON_SUBCLASS_POWER, acpi_button_dir); entry = acpi_power_dir; break; case ACPI_BUTTON_TYPE_SLEEP: case ACPI_BUTTON_TYPE_SLEEPF: if (!acpi_sleep_dir) acpi_sleep_dir = proc_mkdir(ACPI_BUTTON_SUBCLASS_SLEEP, acpi_button_dir); entry = acpi_sleep_dir; break; case ACPI_BUTTON_TYPE_LID: if (!acpi_lid_dir) acpi_lid_dir = proc_mkdir(ACPI_BUTTON_SUBCLASS_LID, acpi_button_dir); entry = acpi_lid_dir; break; } if (!entry) return -ENODEV; entry->owner = THIS_MODULE; acpi_device_dir(device) = proc_mkdir(acpi_device_bid(device), entry); if (!acpi_device_dir(device)) return -ENODEV; acpi_device_dir(device)->owner = THIS_MODULE; /* 'info' [R] */ entry = create_proc_entry(ACPI_BUTTON_FILE_INFO, S_IRUGO, acpi_device_dir(device)); if (!entry) return -ENODEV; else { entry->proc_fops = &acpi_button_info_fops; entry->data = acpi_driver_data(device); entry->owner = THIS_MODULE; } /* show lid state [R] */ if (button->type == ACPI_BUTTON_TYPE_LID) { entry = create_proc_entry(ACPI_BUTTON_FILE_STATE, S_IRUGO, acpi_device_dir(device)); if (!entry) return -ENODEV; else { entry->proc_fops = &acpi_button_state_fops; entry->data = acpi_driver_data(device); entry->owner = THIS_MODULE; } } return 0; } static int acpi_button_remove_fs(struct acpi_device *device) { struct acpi_button *button = acpi_driver_data(device); if (acpi_device_dir(device)) { if (button->type == ACPI_BUTTON_TYPE_LID) remove_proc_entry(ACPI_BUTTON_FILE_STATE, acpi_device_dir(device)); remove_proc_entry(ACPI_BUTTON_FILE_INFO, acpi_device_dir(device)); remove_proc_entry(acpi_device_bid(device), acpi_device_dir(device)->parent); acpi_device_dir(device) = NULL; } return 0; } /* -------------------------------------------------------------------------- Driver Interface -------------------------------------------------------------------------- */ static void acpi_button_notify(acpi_handle handle, u32 event, void *data) { struct acpi_button *button = data; struct input_dev *input; if (!button || !button->device) return; switch (event) { case ACPI_BUTTON_NOTIFY_STATUS: input = button->input; if (button->type == ACPI_BUTTON_TYPE_LID) { struct acpi_handle *handle = button->device->handle; unsigned long state; if (!ACPI_FAILURE(acpi_evaluate_integer(handle, "_LID", NULL, &state))) input_report_switch(input, SW_LID, !state); } else { int keycode = test_bit(KEY_SLEEP, input->keybit) ? KEY_SLEEP : KEY_POWER; input_report_key(input, keycode, 1); input_sync(input); input_report_key(input, keycode, 0); } input_sync(input); acpi_bus_generate_event(button->device, event, ++button->pushed); break; default: ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Unsupported event [0x%x]\n", event)); break; } return; } static acpi_status acpi_button_notify_fixed(void *data) { struct acpi_button *button = data; if (!button) return AE_BAD_PARAMETER; acpi_button_notify(button->device->handle, ACPI_BUTTON_NOTIFY_STATUS, button); return AE_OK; } static int acpi_button_install_notify_handlers(struct acpi_button *button) { acpi_status status; switch (button->type) { case ACPI_BUTTON_TYPE_POWERF: status = acpi_install_fixed_event_handler(ACPI_EVENT_POWER_BUTTON, acpi_button_notify_fixed, button); break; case ACPI_BUTTON_TYPE_SLEEPF: status = acpi_install_fixed_event_handler(ACPI_EVENT_SLEEP_BUTTON, acpi_button_notify_fixed, button); break; default: status = acpi_install_notify_handler(button->device->handle, ACPI_DEVICE_NOTIFY, acpi_button_notify, button); break; } return ACPI_FAILURE(status) ? -ENODEV : 0; } static void acpi_button_remove_notify_handlers(struct acpi_button *button) { switch (button->type) { case ACPI_BUTTON_TYPE_POWERF: acpi_remove_fixed_event_handler(ACPI_EVENT_POWER_BUTTON, acpi_button_notify_fixed); break; case ACPI_BUTTON_TYPE_SLEEPF: acpi_remove_fixed_event_handler(ACPI_EVENT_SLEEP_BUTTON, acpi_button_notify_fixed); break; default: acpi_remove_notify_handler(button->device->handle, ACPI_DEVICE_NOTIFY, acpi_button_notify); break; } } static int acpi_button_add(struct acpi_device *device) { int error; struct acpi_button *button; struct input_dev *input; if (!device) return -EINVAL; button = kzalloc(sizeof(struct acpi_button), GFP_KERNEL); if (!button) return -ENOMEM; button->device = device; acpi_driver_data(device) = button; button->input = input = input_allocate_device(); if (!input) { error = -ENOMEM; goto err_free_button; } /* * Determine the button type (via hid), as fixed-feature buttons * need to be handled a bit differently than generic-space. */ if (!strcmp(acpi_device_hid(device), ACPI_BUTTON_HID_POWER)) { button->type = ACPI_BUTTON_TYPE_POWER; strcpy(acpi_device_name(device), ACPI_BUTTON_DEVICE_NAME_POWER); sprintf(acpi_device_class(device), "%s/%s", ACPI_BUTTON_CLASS, ACPI_BUTTON_SUBCLASS_POWER); } else if (!strcmp(acpi_device_hid(device), ACPI_BUTTON_HID_POWERF)) { button->type = ACPI_BUTTON_TYPE_POWERF; strcpy(acpi_device_name(device), ACPI_BUTTON_DEVICE_NAME_POWERF); sprintf(acpi_device_class(device), "%s/%s", ACPI_BUTTON_CLASS, ACPI_BUTTON_SUBCLASS_POWER); } else if (!strcmp(acpi_device_hid(device), ACPI_BUTTON_HID_SLEEP)) { button->type = ACPI_BUTTON_TYPE_SLEEP; strcpy(acpi_device_name(device), ACPI_BUTTON_DEVICE_NAME_SLEEP); sprintf(acpi_device_class(device), "%s/%s", ACPI_BUTTON_CLASS, ACPI_BUTTON_SUBCLASS_SLEEP); } else if (!strcmp(acpi_device_hid(device), ACPI_BUTTON_HID_SLEEPF)) { button->type = ACPI_BUTTON_TYPE_SLEEPF; strcpy(acpi_device_name(device), ACPI_BUTTON_DEVICE_NAME_SLEEPF); sprintf(acpi_device_class(device), "%s/%s", ACPI_BUTTON_CLASS, ACPI_BUTTON_SUBCLASS_SLEEP); } else if (!strcmp(acpi_device_hid(device), ACPI_BUTTON_HID_LID)) { button->type = ACPI_BUTTON_TYPE_LID; strcpy(acpi_device_name(device), ACPI_BUTTON_DEVICE_NAME_LID); sprintf(acpi_device_class(device), "%s/%s", ACPI_BUTTON_CLASS, ACPI_BUTTON_SUBCLASS_LID); } else { printk(KERN_ERR PREFIX "Unsupported hid [%s]\n", acpi_device_hid(device)); error = -ENODEV; goto err_free_input; } error = acpi_button_add_fs(device); if (error) goto err_free_input; error = acpi_button_install_notify_handlers(button); if (error) goto err_remove_fs; snprintf(button->phys, sizeof(button->phys), "%s/button/input0", acpi_device_hid(device)); input->name = acpi_device_name(device); input->phys = button->phys; input->id.bustype = BUS_HOST; input->id.product = button->type; switch (button->type) { case ACPI_BUTTON_TYPE_POWER: case ACPI_BUTTON_TYPE_POWERF: input->evbit[0] = BIT(EV_KEY); set_bit(KEY_POWER, input->keybit); break; case ACPI_BUTTON_TYPE_SLEEP: case ACPI_BUTTON_TYPE_SLEEPF: input->evbit[0] = BIT(EV_KEY); set_bit(KEY_SLEEP, input->keybit); break; case ACPI_BUTTON_TYPE_LID: input->evbit[0] = BIT(EV_SW); set_bit(SW_LID, input->swbit); break; } error = input_register_device(input); if (error) goto err_remove_handlers; if (device->wakeup.flags.valid) { /* Button's GPE is run-wake GPE */ acpi_set_gpe_type(device->wakeup.gpe_device, device->wakeup.gpe_number, ACPI_GPE_TYPE_WAKE_RUN); acpi_enable_gpe(device->wakeup.gpe_device, device->wakeup.gpe_number, ACPI_NOT_ISR); device->wakeup.state.enabled = 1; } printk(KERN_INFO PREFIX "%s [%s]\n", acpi_device_name(device), acpi_device_bid(device)); return 0; err_remove_handlers: acpi_button_remove_notify_handlers(button); err_remove_fs: acpi_button_remove_fs(device); err_free_input: input_free_device(input); err_free_button: kfree(button); return error; } static int acpi_button_remove(struct acpi_device *device, int type) { struct acpi_button *button; if (!device || !acpi_driver_data(device)) return -EINVAL; button = acpi_driver_data(device); acpi_button_remove_notify_handlers(button); acpi_button_remove_fs(device); input_unregister_device(button->input); kfree(button); return 0; } static int __init acpi_button_init(void) { int result; acpi_button_dir = proc_mkdir(ACPI_BUTTON_CLASS, acpi_root_dir); if (!acpi_button_dir) return -ENODEV; acpi_button_dir->owner = THIS_MODULE; result = acpi_bus_register_driver(&acpi_button_driver); if (result < 0) { remove_proc_entry(ACPI_BUTTON_CLASS, acpi_root_dir);