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awilliam
GitHub Repository: awilliam/linux-vfio
 Path: blob/master/include/linux/atmel-pwm-bl.h
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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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