#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 <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_UNKNOWN 0x00
#define ACPI_BUTTON_NOTIFY_STATUS 0x80
#define ACPI_BUTTON_SUBCLASS_POWER "power"
-#define ACPI_BUTTON_HID_POWER "PNP0C0C"
+#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_LID 0x05
#define _COMPONENT ACPI_BUTTON_COMPONENT
-ACPI_MODULE_NAME ("acpi_button")
+ACPI_MODULE_NAME("acpi_button")
-MODULE_AUTHOR("Paul Diefenbaugh");
+ MODULE_AUTHOR("Paul Diefenbaugh");
MODULE_DESCRIPTION(ACPI_BUTTON_DRIVER_NAME);
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_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 = ACPI_BUTTON_DRIVER_NAME,
- .class = ACPI_BUTTON_CLASS,
- .ids = "ACPI_FPB,ACPI_FSB,PNP0C0D,PNP0C0C,PNP0C0E",
- .ops = {
- .add = acpi_button_add,
- .remove = acpi_button_remove,
- },
+ .name = ACPI_BUTTON_DRIVER_NAME,
+ .class = ACPI_BUTTON_CLASS,
+ .ids = "ACPI_FPB,ACPI_FSB,PNP0C0D,PNP0C0C,PNP0C0E",
+ .ops = {
+ .add = acpi_button_add,
+ .remove = acpi_button_remove,
+ },
};
struct acpi_button {
- acpi_handle handle;
- struct acpi_device *device; /* Fixed button kludge */
- u8 type;
- unsigned long pushed;
+ acpi_handle handle;
+ struct acpi_device *device; /* Fixed button kludge */
+ u8 type;
+ unsigned long pushed;
+};
+
+static struct file_operations acpi_button_info_fops = {
+ .open = acpi_button_info_open_fs,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+static 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 = (struct acpi_button *)seq->private;
+
+ ACPI_FUNCTION_TRACE("acpi_button_info_seq_show");
+
+ if (!button || !button->device)
+ return_VALUE(0);
+
+ seq_printf(seq, "type: %s\n",
+ acpi_device_name(button->device));
+
+ return_VALUE(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 = (struct acpi_button *)seq->private;
+ acpi_status status;
+ unsigned long state;
+
+ ACPI_FUNCTION_TRACE("acpi_button_state_seq_show");
+
+ 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_VALUE(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 = NULL;
+
+ ACPI_FUNCTION_TRACE("acpi_button_add_fs");
+
+ if (!device || !acpi_driver_data(device))
+ return_VALUE(-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_VALUE(-ENODEV);
+ entry->owner = THIS_MODULE;
+
+ acpi_device_dir(device) = proc_mkdir(acpi_device_bid(device), entry);
+ if (!acpi_device_dir(device))
+ return_VALUE(-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)
+ ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+ "Unable to create '%s' fs entry\n",
+ ACPI_BUTTON_FILE_INFO));
+ 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)
+ ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+ "Unable to create '%s' fs entry\n",
+ ACPI_BUTTON_FILE_INFO));
+ else {
+ entry->proc_fops = &acpi_button_state_fops;
+ entry->data = acpi_driver_data(device);
+ entry->owner = THIS_MODULE;
+ }
+ }
+
+ return_VALUE(0);
+}
+
+static int acpi_button_remove_fs(struct acpi_device *device)
+{
+ struct acpi_button *button = NULL;
+
+ 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));
+ 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_VALUE(0);
+}
+
/* --------------------------------------------------------------------------
Driver Interface
-------------------------------------------------------------------------- */
-static void
-acpi_button_notify (
- acpi_handle handle,
- u32 event,
- void *data)
+static void acpi_button_notify(acpi_handle handle, u32 event, void *data)
{
- struct acpi_button *button = (struct acpi_button *) data;
+ struct acpi_button *button = (struct acpi_button *)data;
ACPI_FUNCTION_TRACE("acpi_button_notify");
switch (event) {
case ACPI_BUTTON_NOTIFY_STATUS:
- acpi_bus_generate_event(button->device, event, ++button->pushed);
+ acpi_bus_generate_event(button->device, event,
+ ++button->pushed);
break;
default:
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
- "Unsupported event [0x%x]\n", event));
+ "Unsupported event [0x%x]\n", event));
break;
}
return_VOID;
}
-
-static acpi_status
-acpi_button_notify_fixed (
- void *data)
+static acpi_status acpi_button_notify_fixed(void *data)
{
- struct acpi_button *button = (struct acpi_button *) data;
-
+ struct acpi_button *button = (struct acpi_button *)data;
+
ACPI_FUNCTION_TRACE("acpi_button_notify_fixed");
- BUG_ON(!button);
+ if (!button)
+ return_ACPI_STATUS(AE_BAD_PARAMETER);
acpi_button_notify(button->handle, ACPI_BUTTON_NOTIFY_STATUS, button);
return_ACPI_STATUS(AE_OK);
}
-
-static int
-acpi_button_add (
- struct acpi_device *device)
+static int acpi_button_add(struct acpi_device *device)
{
- int result = 0;
- acpi_status status = AE_OK;
- struct acpi_button *button = NULL;
+ int result = 0;
+ acpi_status status = AE_OK;
+ struct acpi_button *button = NULL;
ACPI_FUNCTION_TRACE("acpi_button_add");
*/
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",
+ 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)) {
+ } 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_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)) {
+ } 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",
+ 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)) {
+ } 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_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)) {
+ } 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",
+ 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 {
+ } else {
ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Unsupported hid [%s]\n",
- acpi_device_hid(device)));
+ acpi_device_hid(device)));
result = -ENODEV;
goto end;
}
+ result = acpi_button_add_fs(device);
+ if (result)
+ goto end;
+
switch (button->type) {
case ACPI_BUTTON_TYPE_POWERF:
- status = acpi_install_fixed_event_handler (
- ACPI_EVENT_POWER_BUTTON,
- acpi_button_notify_fixed,
- button);
+ 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);
+ status =
+ acpi_install_fixed_event_handler(ACPI_EVENT_SLEEP_BUTTON,
+ acpi_button_notify_fixed,
+ button);
break;
default:
- status = acpi_install_notify_handler (
- button->handle,
- ACPI_DEVICE_NOTIFY,
- acpi_button_notify,
- button);
+ status = acpi_install_notify_handler(button->handle,
+ ACPI_DEVICE_NOTIFY,
+ acpi_button_notify,
+ button);
break;
}
if (ACPI_FAILURE(status)) {
ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
- "Error installing notify handler\n"));
+ "Error installing notify handler\n"));
result = -ENODEV;
goto end;
}
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);
+ 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));
+ printk(KERN_INFO PREFIX "%s [%s]\n",
+ acpi_device_name(device), acpi_device_bid(device));
-end:
+ end:
if (result) {
+ acpi_button_remove_fs(device);
kfree(button);
}
return_VALUE(result);
}
-
-static int
-acpi_button_remove (struct acpi_device *device, int type)
+static int acpi_button_remove(struct acpi_device *device, int type)
{
- acpi_status status = 0;
- struct acpi_button *button = NULL;
+ acpi_status status = 0;
+ struct acpi_button *button = NULL;
ACPI_FUNCTION_TRACE("acpi_button_remove");
/* 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);
+ 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);
+ 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);
+ ACPI_DEVICE_NOTIFY,
+ acpi_button_notify);
break;
}
if (ACPI_FAILURE(status))
ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
- "Error removing notify handler\n"));
+ "Error removing notify handler\n"));
+
+ acpi_button_remove_fs(device);
kfree(button);
return_VALUE(0);
}
-
-static int __init
-acpi_button_init (void)
+static int __init acpi_button_init(void)
{
- int result = 0;
+ int result = 0;
ACPI_FUNCTION_TRACE("acpi_button_init");
+ acpi_button_dir = proc_mkdir(ACPI_BUTTON_CLASS, acpi_root_dir);
+ if (!acpi_button_dir)
+ return_VALUE(-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_VALUE(0);
}
-static void __exit
-acpi_button_exit (void)
+static void __exit acpi_button_exit(void)
{
ACPI_FUNCTION_TRACE("acpi_button_exit");
acpi_bus_unregister_driver(&acpi_button_driver);
+ if (acpi_power_dir)
+ remove_proc_entry(ACPI_BUTTON_SUBCLASS_POWER, acpi_button_dir);
+ if (acpi_sleep_dir)
+ remove_proc_entry(ACPI_BUTTON_SUBCLASS_SLEEP, acpi_button_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;
}
projects / linux-2.6-omap-h63xx.git / blobdiff