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linux-davinci-2.6.23
Commit bd4698da authored by Alexey Starikovskiy's avatar Alexey Starikovskiy Committed by Len Brown
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[ACPI] Allow simultaneous Fixed Feature and Control Method buttons 

delete /proc/acpi/button

http://bugzilla.kernel.org/show_bug.cgi?id=1920Signed-off-by: default avatarAlexey Starikovskiy <alexey.y.starikovskiy@intel.com>
Signed-off-by: default avatarLen Brown <len.brown@intel.com>
parent 45b1b196
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Showing with 1 addition and 244 deletions
drivers/acpi/button.c
View file @ bd4698da
......@@ -26,9 +26,6 @@
#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>
......@@ -36,9 +33,6 @@
#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"
......@@ -70,8 +64,6 @@ 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 = ACPI_BUTTON_DRIVER_NAME,
......@@ -90,187 +82,6 @@ struct acpi_button {
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 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:
entry = proc_mkdir(ACPI_BUTTON_SUBCLASS_POWER,
acpi_button_dir);
break;
case ACPI_BUTTON_TYPE_SLEEP:
case ACPI_BUTTON_TYPE_SLEEPF:
entry = proc_mkdir(ACPI_BUTTON_SUBCLASS_SLEEP,
acpi_button_dir);
break;
case ACPI_BUTTON_TYPE_LID:
entry = proc_mkdir(ACPI_BUTTON_SUBCLASS_LID,
acpi_button_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);
switch (button->type) {
case ACPI_BUTTON_TYPE_POWER:
case ACPI_BUTTON_TYPE_POWERF:
remove_proc_entry(ACPI_BUTTON_SUBCLASS_POWER,
acpi_button_dir);
break;
case ACPI_BUTTON_TYPE_SLEEP:
case ACPI_BUTTON_TYPE_SLEEPF:
remove_proc_entry(ACPI_BUTTON_SUBCLASS_SLEEP,
acpi_button_dir);
break;
case ACPI_BUTTON_TYPE_LID:
remove_proc_entry(ACPI_BUTTON_SUBCLASS_LID,
acpi_button_dir);
break;
}
acpi_device_dir(device) = NULL;
}
return_VALUE(0);
}
/* --------------------------------------------------------------------------
Driver Interface
-------------------------------------------------------------------------- */
......@@ -310,8 +121,7 @@ acpi_button_notify_fixed (
ACPI_FUNCTION_TRACE("acpi_button_notify_fixed");
if (!button)
return_ACPI_STATUS(AE_BAD_PARAMETER);
BUG_ON(!button);
acpi_button_notify(button->handle, ACPI_BUTTON_NOTIFY_STATUS, button);
......@@ -327,10 +137,6 @@ acpi_button_add (
acpi_status status = AE_OK;
struct acpi_button *button = NULL;
static struct acpi_device *power_button;
static struct acpi_device *sleep_button;
static struct acpi_device *lid_button;
ACPI_FUNCTION_TRACE("acpi_button_add");
if (!device)
......@@ -391,42 +197,6 @@ acpi_button_add (
goto end;
}
/*
* Ensure only one button of each type is used.
*/
switch (button->type) {
case ACPI_BUTTON_TYPE_POWER:
case ACPI_BUTTON_TYPE_POWERF:
if (!power_button)
power_button = device;
else {
kfree(button);
return_VALUE(-ENODEV);
}
break;
case ACPI_BUTTON_TYPE_SLEEP:
case ACPI_BUTTON_TYPE_SLEEPF:
if (!sleep_button)
sleep_button = device;
else {
kfree(button);
return_VALUE(-ENODEV);
}
break;
case ACPI_BUTTON_TYPE_LID:
if (!lid_button)
lid_button = device;
else {
kfree(button);
return_VALUE(-ENODEV);
}
break;
}
result = acpi_button_add_fs(device);
if (result)
goto end;
switch (button->type) {
case ACPI_BUTTON_TYPE_POWERF:
status = acpi_install_fixed_event_handler (
......@@ -470,7 +240,6 @@ acpi_button_add (
end:
if (result) {
acpi_button_remove_fs(device);
kfree(button);
}
......@@ -511,8 +280,6 @@ acpi_button_remove (struct acpi_device *device, int type)
ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
"Error removing notify handler\n"));
acpi_button_remove_fs(device);
kfree(button);
return_VALUE(0);
......@@ -526,21 +293,14 @@ acpi_button_init (void)
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)
{
......@@ -548,11 +308,8 @@ acpi_button_exit (void)
acpi_bus_unregister_driver(&acpi_button_driver);
remove_proc_entry(ACPI_BUTTON_CLASS, acpi_root_dir);
return_VOID;
}
module_init(acpi_button_init);
module_exit(acpi_button_exit);
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