| /* | |
| * Copyright (C) 2009-2010, Lars-Peter Clausen <lars@metafoo.de> | |
| * PCF50633 backlight device driver | |
| * | |
| * This program is free software; you can redistribute it and/or modify it | |
| * under the terms of the GNU General Public License as published by the | |
| * Free Software Foundation; either version 2 of the License, or (at your | |
| * option) any later version. | |
| * | |
| * You should have received a copy of the GNU General Public License along | |
| * with this program; if not, write to the Free Software Foundation, Inc., | |
| * 675 Mass Ave, Cambridge, MA 02139, USA. | |
| * | |
| */ | |
| #ifndef __LINUX_MFD_PCF50633_BACKLIGHT | |
| #define __LINUX_MFD_PCF50633_BACKLIGHT | |
| /* | |
| * @default_brightness: Backlight brightness is initialized to this value | |
| * | |
| * Brightness to be used after the driver has been probed. | |
| * Valid range 0-63. | |
| * | |
| * @default_brightness_limit: The actual brightness is limited by this value | |
| * | |
| * Brightness limit to be used after the driver has been probed. This is useful | |
| * when it is not known how much power is available for the backlight during | |
| * probe. | |
| * Valid range 0-63. Can be changed later with pcf50633_bl_set_brightness_limit. | |
| * | |
| * @ramp_time: Display ramp time when changing brightness | |
| * | |
| * When changing the backlights brightness the change is not instant, instead | |
| * it fades smooth from one state to another. This value specifies how long | |
| * the fade should take. The lower the value the higher the fade time. | |
| * Valid range 0-255 | |
| */ | |
| struct pcf50633_bl_platform_data { | |
| unsigned int default_brightness; | |
| unsigned int default_brightness_limit; | |
| uint8_t ramp_time; | |
| }; | |
| struct pcf50633; | |
| int pcf50633_bl_set_brightness_limit(struct pcf50633 *pcf, unsigned int limit); | |
| #endif | |