Lines Matching defs:brightness

38  * extensions to provide generic support for brightness control and display
41  * If brightness control methods are absent or non-functional, ACPI brightness
47  * - The BIOS should not automatically control the brightness levels.
50  * sysctl variables acpivga<n>.policy and acpiout<n>.brightness under hw.acpi.
111 		uint8_t		brightness:1;
127 /* BIOS brightness switch policies (ACPI 4.0a, Sec. B.4.1). */
259  *	contains the supported brightness levels (_BCL package) and the current
260  *	level.  Following Windows 7 brightness control, we ignore the fullpower
282  * Minimum brightness increment/decrement in response to increase/decrease
283  * brightness hotkey notifications.  Must be strictly positive.
558 	asc->sc_policy.fmt.brightness = ACPI_DISP_POLICY_BRIGHTNESS_NORMAL;
717 		 * Synchronize ACPI and driver brightness levels, and
718 		 * check that brightness control is working.
866 	/* Set brightness level */
1270 		    CTLFLAG_READWRITE, CTLTYPE_INT, "brightness",
1271 		    SYSCTL_DESCR("Current brightness level"),
1649  * "This method allows the OS to query a list of brightness levels supported by
1653  *  representing the supported brightness levels.  Each integer has 8 bits of
1685 	/* At most 256 brightness levels (8-bit integers). */
1892 	    device_xname(osc->sc_dev), "brightness", *valuep));
1898  * Quirk for when getting the brightness value always returns the same
1899  * result, which breaks brightness controls which try to lower the
1900  * brightness by a specific value and then check if it worked.
1919 	/* Find a different brightness value */
1926 		    "couldn't find different brightness levels"
1959 	    device_xname(osc->sc_dev), "brightness", value));
2030 	aprint_verbose_dev(self, "brightness levels: ");