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#ifndef LIBBACKLIGHT_H
#define LIBBACKLIGHT_H
#include <pciaccess.h>
#ifdef __cplusplus
extern "C" {
#endif
enum backlight_type {
BACKLIGHT_RAW,
BACKLIGHT_PLATFORM,
BACKLIGHT_FIRMWARE,
};
struct backlight {
char *path;
int max_brightness;
int brightness;
enum backlight_type type;
};
/*
* Find and set up a backlight for the given PCI device or card/connector
* combination. It is valid (and preferred) to provide both sets of information
*/
struct backlight *backlight_init(struct pci_device *dev, int card,
int connector_type, int connector_type_id);
/* Free backlight resources */
void backlight_destroy(struct backlight *backlight);
/* Provide the maximum backlight value */
long backlight_get_max_brightness(struct backlight *backlight);
/* Provide the cached backlight value */
long backlight_get_brightness(struct backlight *backlight);
/* Provide the hardware backlight value */
long backlight_get_actual_brightness(struct backlight *backlight);
/* Set the backlight to a value between 0 and max */
long backlight_set_brightness(struct backlight *backlight, long brightness);
#ifdef __cplusplus
}
#endif
#endif /* LIBBACKLIGHT_H */
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