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ACPI: button: send initial lid state after add and resume 

Input layer should know about initial state of lid switch,
even before first notify.

Reference: https://bugzilla.novell.com/show_bug.cgi?id=326814

Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Acked-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Alexey Starikovskiy 2007-10-22 14:18:18 +04:00 committed by Len Brown
parent 1dbc1fda5d
commit 23de5d9ef2
1 changed files with 29 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

37
drivers/acpi/button.c
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@ -78,6 +78,7 @@ 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);
@ -87,6 +88,7 @@ static struct acpi_driver acpi_button_driver = {
.ids = button_device_ids,
.ops = {
.add = acpi_button_add,
.resume = acpi_button_resume,
.remove = acpi_button_remove,
},
};
@ -253,6 +255,19 @@ static int acpi_button_remove_fs(struct acpi_device *device)
/* --------------------------------------------------------------------------
Driver Interface
-------------------------------------------------------------------------- */
static int acpi_lid_send_state(struct acpi_button *button)
{
unsigned 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);
return 0;
}
static void acpi_button_notify(acpi_handle handle, u32 event, void *data)
{
@ -265,15 +280,8 @@ static void acpi_button_notify(acpi_handle handle, u32 event, void *data)
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);
acpi_lid_send_state(button);
} else {
int keycode = test_bit(KEY_SLEEP, input->keybit) ?
KEY_SLEEP : KEY_POWER;
@ -336,6 +344,17 @@ static int acpi_button_install_notify_handlers(struct acpi_button *button)
return ACPI_FAILURE(status) ? -ENODEV : 0;
}
static int acpi_button_resume(struct acpi_device *device)
{
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) {
@ -453,6 +472,8 @@ static int acpi_button_add(struct acpi_device *device)
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 */