koreader

Author	SHA1	Message	Date
David Engster	a912e00aa3	device/kobo/sysfs_light: Make used exponent in formulas a variable	6 years ago
David Engster	effc7135a1	device/kobo/sysfs_light: Explicitly handle warmth/brightness = 0 For warmth and/or brightness = 0, we need to make sure that the red/green/white LEDs are actually turned off, regardless of the values for gain/offset.	6 years ago
David Engster	201370a220	device/kobo/sysfs_light: Use current brightness/warmth if none given	6 years ago
Frans de Jonge	68e63df442	[feat] Add H2O2 natural light (#3709 ) See https://www.mobileread.com/forums/showpost.php?p=3664352&postcount=66	6 years ago
David Engster	6b4a548fe1	kobo: Add sysfs-based interface to frontlight By default, the ioctl interface is used for accessing the frontlight. However, the ioctl interface has two problems: the overall brightness seems to be lower (issue #2321), and it does not support the natural light support from the Kobo Aura One (issue #2285). This interface is the first step to fix both these issues. From observing Nickel's behavior, it appears the white/green/red intensities are roughly linear dependent on the 4th root of brightness and warmth values. This leads to a very quick increase of the intensities for lower brightness/warmth values, which then saturate for larger ones. The values for gain/offset were determined by a simple linear regression, but the plan is to create a widget so that users may adapt these values to their liking.	6 years ago