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authorAlexey Starikovskiy <astarikovskiy@suse.de>2007-10-22 14:18:18 +0400
committerLen Brown <len.brown@intel.com>2007-10-25 16:31:30 -0400
commit23de5d9ef2a4bbc4f733f58311bcb7cf6239c813 (patch)
treea781cebb71c5ea3b5a6750ac48cb57aaad32aac4 /drivers/acpi/button.c
parent1dbc1fda5d8ca907f320b806005d4a447977d26a (diff)
downloadlinux-23de5d9ef2a4bbc4f733f58311bcb7cf6239c813.tar.bz2
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>
Diffstat (limited to 'drivers/acpi/button.c')
-rw-r--r--drivers/acpi/button.c37
1 files changed, 29 insertions, 8 deletions
diff --git a/drivers/acpi/button.c b/drivers/acpi/button.c
index 301e832e6961..24a7865a57cb 100644
--- a/drivers/acpi/button.c
+++ b/drivers/acpi/button.c
@@ -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 */