diff options
Diffstat (limited to 'include/linux/mfd/pcf50633/backlight.h')
| -rw-r--r-- | include/linux/mfd/pcf50633/backlight.h | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/include/linux/mfd/pcf50633/backlight.h b/include/linux/mfd/pcf50633/backlight.h new file mode 100644 index 00000000000..9d3646af056 --- /dev/null +++ b/include/linux/mfd/pcf50633/backlight.h @@ -0,0 +1,44 @@ +/* + * Copyright (C) 2009, 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: Brightness to be used after the driver has been + probed. Valid range 0-63. +* @default_brightness_limit: Brightness limit to be used after the driver has +* been probed. This is usfull when it is not known +* how much power is available for the backlight +* during probe. Valid range 0-63 +* @ramp_time: 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 + |