int acpi_lid_open(void)
{
if (!lid_device)
return -ENODEV;
return acpi_lid_evaluate_state(lid_device);
}
static int acpi_lid_update_state(struct acpi_device *device)
{
int state;
state = acpi_lid_evaluate_state(device);
if (state < 0)
return state;
return acpi_lid_notify_state(device, state);
}
static int acpi_button_state_seq_show(struct seq_file *seq, void *offset)
{
struct acpi_device *device = seq->private;
int state;
state = acpi_lid_evaluate_state(device);
seq_printf(seq, "state: %s\n",
state < 0 ? "unsupported" : (state ? "open" : "closed"));
return 0;
}
static int acpi_lid_input_open(struct input_dev *input)
{
struct acpi_device *device = input_get_drvdata(input);
struct acpi_button *button = acpi_driver_data(device);
button->last_state = !!acpi_lid_evaluate_state(device);
button->last_time = ktime_get();
acpi_lid_initialize_state(device);
return 0;
}
static int acpi_button_resume(struct device *dev)
{
struct acpi_device *device = to_acpi_device(dev);
struct acpi_button *button = acpi_driver_data(device);
button->suspended = false;
if (button->type == ACPI_BUTTON_TYPE_LID && button->input->users) {
button->last_state = !!acpi_lid_evaluate_state(device);
button->last_time = ktime_get();
acpi_lid_initialize_state(device);
}
return 0;
}
static int acpi_lid_update_state(struct acpi_device *device,
bool signal_wakeup)
{
int state;
state = acpi_lid_evaluate_state(device);
if (state < 0)
return state;
if (state && signal_wakeup)
acpi_pm_wakeup_event(&device->dev);
return acpi_lid_notify_state(device, state);
}
