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| author | Aaron Lu <aaron.lu@intel.com> | 2016-04-27 20:45:04 +0800 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2016-05-04 23:41:14 +0200 |
| commit | 059500940defe285222d3b189b366dfe7f299cae (patch) | |
| tree | e2e3ba34a6c7460821d45aac319d26481563c9ca /include/acpi/video.h | |
| parent | 01c3664de62f89f6777e59173ad8e20b5a4c267f (diff) | |
| download | lwn-059500940defe285222d3b189b366dfe7f299cae.tar.gz lwn-059500940defe285222d3b189b366dfe7f299cae.zip | |
ACPI/video: export acpi_video_get_levels
The acpi_video_get_levels is useful for other drivers, i.e. the
to-be-added int3406 thermal driver, so export it.
Signed-off-by: Aaron Lu <aaron.lu@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'include/acpi/video.h')
| -rw-r--r-- | include/acpi/video.h | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/include/acpi/video.h b/include/acpi/video.h index 5ca2f2c16458..a4b96c971564 100644 --- a/include/acpi/video.h +++ b/include/acpi/video.h @@ -4,6 +4,19 @@ #include <linux/errno.h> /* for ENODEV */ #include <linux/types.h> /* for bool */ +struct acpi_video_brightness_flags { + u8 _BCL_no_ac_battery_levels:1; /* no AC/Battery levels in _BCL */ + u8 _BCL_reversed:1; /* _BCL package is in a reversed order */ + u8 _BQC_use_index:1; /* _BQC returns an index value */ +}; + +struct acpi_video_device_brightness { + int curr; + int count; + int *levels; + struct acpi_video_brightness_flags flags; +}; + struct acpi_device; #define ACPI_VIDEO_CLASS "video" @@ -37,6 +50,8 @@ extern void acpi_video_set_dmi_backlight_type(enum acpi_backlight_type type); * may change over time and should not be cached. */ extern bool acpi_video_handles_brightness_key_presses(void); +extern int acpi_video_get_levels(struct acpi_device *device, + struct acpi_video_device_brightness **dev_br); #else static inline int acpi_video_register(void) { return 0; } static inline void acpi_video_unregister(void) { return; } @@ -56,6 +71,11 @@ static inline bool acpi_video_handles_brightness_key_presses(void) { return false; } +static int acpi_video_get_levels(struct acpi_device *device, + struct acpi_video_device_brightness **dev_br) +{ + return -ENODEV; +} #endif #endif |