diff options
| author | Jesse Barnes <jbarnes@virtuousgeek.org> | 2009-09-10 18:28:02 -0400 |
|---|---|---|
| committer | Eric Anholt <eric@anholt.net> | 2009-09-10 19:09:11 -0400 |
| commit | 7e12715ecc47a8a59154afe2746e48998225bb69 (patch) | |
| tree | 308e53b58027772bd114585f57c4180eb89239a7 /include/acpi | |
| parent | af729a26ccc3ff9ad834a5e96f455aab20f176cd (diff) | |
ACPI button: provide lid status functions
Some drivers need to know when a lid event occurs and get the current
status. This can be useful for when a platform firmware clobbers some
hardware state at lid time, and a driver needs to restore things when
the lid is opened again.
Acked-by: Matthew Garrett <mjg59@srcf.ucam.org>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Eric Anholt <eric@anholt.net>
Diffstat (limited to 'include/acpi')
| -rw-r--r-- | include/acpi/button.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/include/acpi/button.h b/include/acpi/button.h new file mode 100644 index 000000000000..bb643a79d651 --- /dev/null +++ b/include/acpi/button.h | |||
| @@ -0,0 +1,10 @@ | |||
| 1 | #ifndef ACPI_BUTTON_H | ||
| 2 | #define ACPI_BUTTON_H | ||
| 3 | |||
| 4 | #include <linux/notifier.h> | ||
| 5 | |||
| 6 | extern int acpi_lid_notifier_register(struct notifier_block *nb); | ||
| 7 | extern int acpi_lid_notifier_unregister(struct notifier_block *nb); | ||
| 8 | extern int acpi_lid_open(void); | ||
| 9 | |||
| 10 | #endif /* ACPI_BUTTON_H */ | ||