1/*
2 *  Copyright (C) 2009-2010, Lars-Peter Clausen <lars@metafoo.de>
3 *      PCF50633 backlight device driver
4 *
5 *  This program is free software; you can redistribute	 it and/or modify it
6 *  under  the terms of	 the GNU General  Public License as published by the
7 *  Free Software Foundation;  either version 2 of the	License, or (at your
8 *  option) any later version.
9 *
10 *  You should have received a copy of the  GNU General Public License along
11 *  with this program; if not, write  to the Free Software Foundation, Inc.,
12 *  675 Mass Ave, Cambridge, MA 02139, USA.
13 *
14 */
15
16#ifndef __LINUX_MFD_PCF50633_BACKLIGHT
17#define __LINUX_MFD_PCF50633_BACKLIGHT
18
19/*
20* @default_brightness: Backlight brightness is initialized to this value
21*
22* Brightness to be used after the driver has been probed.
23* Valid range 0-63.
24*
25* @default_brightness_limit: The actual brightness is limited by this value
26*
27* Brightness limit to be used after the driver has been probed. This is useful
28* when it is not known how much power is available for the backlight during
29* probe.
30* Valid range 0-63. Can be changed later with pcf50633_bl_set_brightness_limit.
31*
32* @ramp_time: Display ramp time when changing brightness
33*
34* When changing the backlights brightness the change is not instant, instead
35* it fades smooth from one state to another. This value specifies how long
36* the fade should take. The lower the value the higher the fade time.
37* Valid range 0-255
38*/
39struct pcf50633_bl_platform_data {
40	unsigned int	default_brightness;
41	unsigned int	default_brightness_limit;
42	uint8_t		ramp_time;
43};
44
45
46struct pcf50633;
47
48int pcf50633_bl_set_brightness_limit(struct pcf50633 *pcf, unsigned int limit);
49
50#endif
51
52