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44 lines
1.5 KiB
C
44 lines
1.5 KiB
C
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/*
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* Copyright (C) 2007 Atmel Corporation
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*
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* Driver for the AT32AP700X PS/2 controller (PSIF).
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 as published
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* by the Free Software Foundation.
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*/
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#ifndef __INCLUDE_ATMEL_PWM_BL_H
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#define __INCLUDE_ATMEL_PWM_BL_H
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/**
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* struct atmel_pwm_bl_platform_data
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* @pwm_channel: which PWM channel in the PWM module to use.
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* @pwm_frequency: PWM frequency to generate, the driver will try to be as
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* close as the prescaler allows.
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* @pwm_compare_max: value to use in the PWM channel compare register.
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* @pwm_duty_max: maximum duty cycle value, must be less than or equal to
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* pwm_compare_max.
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* @pwm_duty_min: minimum duty cycle value, must be less than pwm_duty_max.
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* @pwm_active_low: set to one if the low part of the PWM signal increases the
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* brightness of the backlight.
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* @gpio_on: GPIO line to control the backlight on/off, set to -1 if not used.
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* @on_active_low: set to one if the on/off signal is on when GPIO is low.
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*
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* This struct must be added to the platform device in the board code. It is
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* used by the atmel-pwm-bl driver to setup the GPIO to control on/off and the
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* PWM device.
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*/
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struct atmel_pwm_bl_platform_data {
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unsigned int pwm_channel;
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unsigned int pwm_frequency;
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unsigned int pwm_compare_max;
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unsigned int pwm_duty_max;
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unsigned int pwm_duty_min;
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unsigned int pwm_active_low;
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int gpio_on;
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unsigned int on_active_low;
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};
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#endif /* __INCLUDE_ATMEL_PWM_BL_H */
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