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authorAaron Lu <aaron.lu@intel.com>2016-04-27 20:45:04 +0800
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2016-05-04 23:41:14 +0200
commit059500940defe285222d3b189b366dfe7f299cae (patch)
treee2e3ba34a6c7460821d45aac319d26481563c9ca /include/acpi/video.h
parent01c3664de62f89f6777e59173ad8e20b5a4c267f (diff)
downloadlinux-059500940defe285222d3b189b366dfe7f299cae.tar.bz2
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.h20
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