#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_DRIVER_NAME "ACPI Button Driver"
#define ACPI_BUTTON_CLASS "button"
#define ACPI_BUTTON_FILE_INFO "info"
#define ACPI_BUTTON_FILE_STATE "state"
#define ACPI_BUTTON_TYPE_LID 0x05
#define _COMPONENT ACPI_BUTTON_COMPONENT
-ACPI_MODULE_NAME("acpi_button")
+ACPI_MODULE_NAME("button");
- MODULE_AUTHOR("Paul Diefenbaugh");
-MODULE_DESCRIPTION(ACPI_BUTTON_DRIVER_NAME);
+MODULE_AUTHOR("Paul Diefenbaugh");
+MODULE_DESCRIPTION("ACPI Button Driver");
MODULE_LICENSE("GPL");
+static const struct acpi_device_id button_device_ids[] = {
+ {ACPI_BUTTON_HID_LID, 0},
+ {ACPI_BUTTON_HID_SLEEP, 0},
+ {ACPI_BUTTON_HID_SLEEPF, 0},
+ {ACPI_BUTTON_HID_POWER, 0},
+ {ACPI_BUTTON_HID_POWERF, 0},
+ {"", 0},
+};
+MODULE_DEVICE_TABLE(acpi, button_device_ids);
+
static int acpi_button_add(struct acpi_device *device);
static int acpi_button_remove(struct acpi_device *device, int type);
+static int acpi_button_resume(struct acpi_device *device);
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 = ACPI_BUTTON_DRIVER_NAME,
+ .name = "button",
.class = ACPI_BUTTON_CLASS,
- .ids = "ACPI_FPB,ACPI_FSB,PNP0C0D,PNP0C0C,PNP0C0E",
+ .ids = button_device_ids,
.ops = {
.add = acpi_button_add,
+ .resume = acpi_button_resume,
.remove = acpi_button_remove,
- },
+ },
};
struct acpi_button {
- acpi_handle handle;
struct acpi_device *device; /* Fixed button kludge */
- u8 type;
+ unsigned int type;
+ struct input_dev *input;
+ char phys[32]; /* for input device */
unsigned long pushed;
};
-static struct file_operations acpi_button_info_fops = {
+static const struct file_operations acpi_button_info_fops = {
+ .owner = THIS_MODULE,
.open = acpi_button_info_open_fs,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
-static struct file_operations acpi_button_state_fops = {
+static const struct file_operations acpi_button_state_fops = {
+ .owner = THIS_MODULE,
.open = acpi_button_state_open_fs,
.read = seq_read,
.llseek = seq_lseek,
static int acpi_button_info_seq_show(struct seq_file *seq, void *offset)
{
- struct acpi_button *button = (struct acpi_button *)seq->private;
-
- ACPI_FUNCTION_TRACE("acpi_button_info_seq_show");
+ struct acpi_button *button = seq->private;
if (!button || !button->device)
- return_VALUE(0);
+ return 0;
seq_printf(seq, "type: %s\n",
acpi_device_name(button->device));
- return_VALUE(0);
+ return 0;
}
static int acpi_button_info_open_fs(struct inode *inode, struct file *file)
static int acpi_button_state_seq_show(struct seq_file *seq, void *offset)
{
- struct acpi_button *button = (struct acpi_button *)seq->private;
+ struct acpi_button *button = seq->private;
acpi_status status;
- unsigned long state;
-
- ACPI_FUNCTION_TRACE("acpi_button_state_seq_show");
+ unsigned long long state;
if (!button || !button->device)
- return_VALUE(0);
-
- status = acpi_evaluate_integer(button->handle, "_LID", NULL, &state);
- if (ACPI_FAILURE(status)) {
- seq_printf(seq, "state: unsupported\n");
- } else {
- seq_printf(seq, "state: %s\n",
- (state ? "open" : "closed"));
- }
+ return 0;
- return_VALUE(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)
static int acpi_button_add_fs(struct acpi_device *device)
{
struct proc_dir_entry *entry = NULL;
- struct acpi_button *button = NULL;
-
- ACPI_FUNCTION_TRACE("acpi_button_add_fs");
+ struct acpi_button *button;
if (!device || !acpi_driver_data(device))
- return_VALUE(-EINVAL);
+ return -EINVAL;
button = acpi_driver_data(device);
}
if (!entry)
- return_VALUE(-ENODEV);
+ return -ENODEV;
entry->owner = THIS_MODULE;
acpi_device_dir(device) = proc_mkdir(acpi_device_bid(device), entry);
if (!acpi_device_dir(device))
- return_VALUE(-ENODEV);
+ 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));
+ entry = proc_create_data(ACPI_BUTTON_FILE_INFO,
+ S_IRUGO, acpi_device_dir(device),
+ &acpi_button_info_fops,
+ acpi_driver_data(device));
if (!entry)
- return_VALUE(-ENODEV);
- else {
- entry->proc_fops = &acpi_button_info_fops;
- entry->data = acpi_driver_data(device);
- entry->owner = THIS_MODULE;
- }
+ return -ENODEV;
/* 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));
+ entry = proc_create_data(ACPI_BUTTON_FILE_STATE,
+ S_IRUGO, acpi_device_dir(device),
+ &acpi_button_state_fops,
+ acpi_driver_data(device));
if (!entry)
return -ENODEV;
- else {
- entry->proc_fops = &acpi_button_state_fops;
- entry->data = acpi_driver_data(device);
- entry->owner = THIS_MODULE;
- }
}
- return_VALUE(0);
+ return 0;
}
static int acpi_button_remove_fs(struct acpi_device *device)
{
- struct acpi_button *button = NULL;
+ struct acpi_button *button = acpi_driver_data(device);
- ACPI_FUNCTION_TRACE("acpi_button_remove_fs");
-
- 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) = NULL;
}
- return_VALUE(0);
+ return 0;
}
/* --------------------------------------------------------------------------
Driver Interface
-------------------------------------------------------------------------- */
+static int acpi_lid_send_state(struct acpi_button *button)
+{
+ unsigned long long state;
+ acpi_status status;
+
+ status = acpi_evaluate_integer(button->device->handle, "_LID", NULL,
+ &state);
+ if (ACPI_FAILURE(status))
+ return -ENODEV;
+ /* input layer checks if event is redundant */
+ input_report_switch(button->input, SW_LID, !state);
+ input_sync(button->input);
+ return 0;
+}
static void acpi_button_notify(acpi_handle handle, u32 event, void *data)
{
- struct acpi_button *button = (struct acpi_button *)data;
-
- ACPI_FUNCTION_TRACE("acpi_button_notify");
+ struct acpi_button *button = data;
+ struct input_dev *input;
if (!button || !button->device)
- return_VOID;
+ return;
switch (event) {
case ACPI_BUTTON_NOTIFY_STATUS:
- acpi_bus_generate_event(button->device, event,
+ input = button->input;
+ if (button->type == ACPI_BUTTON_TYPE_LID) {
+ acpi_lid_send_state(button);
+ } 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_proc_event(button->device, event,
++button->pushed);
break;
default:
break;
}
- return_VOID;
+ return;
}
static acpi_status acpi_button_notify_fixed(void *data)
{
- struct acpi_button *button = (struct acpi_button *)data;
-
- ACPI_FUNCTION_TRACE("acpi_button_notify_fixed");
+ struct acpi_button *button = data;
if (!button)
- return_ACPI_STATUS(AE_BAD_PARAMETER);
+ return AE_BAD_PARAMETER;
- acpi_button_notify(button->handle, ACPI_BUTTON_NOTIFY_STATUS, button);
+ acpi_button_notify(button->device->handle, ACPI_BUTTON_NOTIFY_STATUS, button);
- return_ACPI_STATUS(AE_OK);
+ return AE_OK;
}
-static int acpi_button_add(struct acpi_device *device)
+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 int acpi_button_resume(struct acpi_device *device)
{
- int result = 0;
- acpi_status status = AE_OK;
- struct acpi_button *button = NULL;
+ struct acpi_button *button;
+ if (!device)
+ return -EINVAL;
+ button = acpi_driver_data(device);
+ if (button && button->type == ACPI_BUTTON_TYPE_LID)
+ return acpi_lid_send_state(button);
+ return 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;
+ }
+}
- ACPI_FUNCTION_TRACE("acpi_button_add");
+static int acpi_button_add(struct acpi_device *device)
+{
+ int error;
+ struct acpi_button *button;
+ struct input_dev *input;
if (!device)
- return_VALUE(-EINVAL);
+ return -EINVAL;
- button = kmalloc(sizeof(struct acpi_button), GFP_KERNEL);
+ button = kzalloc(sizeof(struct acpi_button), GFP_KERNEL);
if (!button)
- return_VALUE(-ENOMEM);
- memset(button, 0, sizeof(struct acpi_button));
+ return -ENOMEM;
button->device = device;
- button->handle = device->handle;
- acpi_driver_data(device) = button;
+ device->driver_data = 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
sprintf(acpi_device_class(device), "%s/%s",
ACPI_BUTTON_CLASS, ACPI_BUTTON_SUBCLASS_LID);
} else {
- ACPI_ERROR((AE_INFO, "Unsupported hid [%s]",
- acpi_device_hid(device)));
- result = -ENODEV;
- goto end;
+ printk(KERN_ERR PREFIX "Unsupported hid [%s]\n",
+ acpi_device_hid(device));
+ error = -ENODEV;
+ goto err_free_input;
}
- result = acpi_button_add_fs(device);
- if (result)
- goto end;
+ 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;
+ input->dev.parent = &device->dev;
switch (button->type) {
+ case ACPI_BUTTON_TYPE_POWER:
case ACPI_BUTTON_TYPE_POWERF:
- status =
- acpi_install_fixed_event_handler(ACPI_EVENT_POWER_BUTTON,
- acpi_button_notify_fixed,
- button);
+ input->evbit[0] = BIT_MASK(EV_KEY);
+ set_bit(KEY_POWER, input->keybit);
break;
+
+ case ACPI_BUTTON_TYPE_SLEEP:
case ACPI_BUTTON_TYPE_SLEEPF:
- status =
- acpi_install_fixed_event_handler(ACPI_EVENT_SLEEP_BUTTON,
- acpi_button_notify_fixed,
- button);
+ input->evbit[0] = BIT_MASK(EV_KEY);
+ set_bit(KEY_SLEEP, input->keybit);
break;
- default:
- status = acpi_install_notify_handler(button->handle,
- ACPI_DEVICE_NOTIFY,
- acpi_button_notify,
- button);
+
+ case ACPI_BUTTON_TYPE_LID:
+ input->evbit[0] = BIT_MASK(EV_SW);
+ set_bit(SW_LID, input->swbit);
break;
}
- if (ACPI_FAILURE(status)) {
- result = -ENODEV;
- goto end;
- }
+ error = input_register_device(input);
+ if (error)
+ goto err_remove_handlers;
+ if (button->type == ACPI_BUTTON_TYPE_LID)
+ acpi_lid_send_state(button);
if (device->wakeup.flags.valid) {
/* Button's GPE is run-wake GPE */
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.gpe_number);
device->wakeup.state.enabled = 1;
}
printk(KERN_INFO PREFIX "%s [%s]\n",
acpi_device_name(device), acpi_device_bid(device));
- end:
- if (result) {
- acpi_button_remove_fs(device);
- kfree(button);
- }
+ return 0;
- return_VALUE(result);
+ 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)
{
- acpi_status status = 0;
- struct acpi_button *button = NULL;
-
- ACPI_FUNCTION_TRACE("acpi_button_remove");
+ struct acpi_button *button;
if (!device || !acpi_driver_data(device))
- return_VALUE(-EINVAL);
+ return -EINVAL;
button = acpi_driver_data(device);
- /* Unregister for device notifications. */
- switch (button->type) {
- case ACPI_BUTTON_TYPE_POWERF:
- status =
- acpi_remove_fixed_event_handler(ACPI_EVENT_POWER_BUTTON,
- acpi_button_notify_fixed);
- break;
- case ACPI_BUTTON_TYPE_SLEEPF:
- status =
- acpi_remove_fixed_event_handler(ACPI_EVENT_SLEEP_BUTTON,
- acpi_button_notify_fixed);
- break;
- default:
- status = acpi_remove_notify_handler(button->handle,
- ACPI_DEVICE_NOTIFY,
- acpi_button_notify);
- break;
- }
-
+ acpi_button_remove_notify_handlers(button);
acpi_button_remove_fs(device);
-
+ input_unregister_device(button->input);
kfree(button);
- return_VALUE(0);
+ return 0;
}
static int __init acpi_button_init(void)
{
- int result = 0;
-
- ACPI_FUNCTION_TRACE("acpi_button_init");
+ int result;
acpi_button_dir = proc_mkdir(ACPI_BUTTON_CLASS, acpi_root_dir);
if (!acpi_button_dir)
- return_VALUE(-ENODEV);
+ 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);
- return_VALUE(-ENODEV);
+ return -ENODEV;
}
- return_VALUE(0);
+ return 0;
}
static void __exit acpi_button_exit(void)
{
- ACPI_FUNCTION_TRACE("acpi_button_exit");
-
acpi_bus_unregister_driver(&acpi_button_driver);
if (acpi_power_dir)
if (acpi_lid_dir)
remove_proc_entry(ACPI_BUTTON_SUBCLASS_LID, acpi_button_dir);
remove_proc_entry(ACPI_BUTTON_CLASS, acpi_root_dir);
-
- return_VOID;
}
module_init(acpi_button_init);
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff