/*
 * header file for pwm driver.
 *
 * Copyright (c) 2011 samsung electronics
 * Donghwa Lee <dh09.lee@samsung.com>
 *
 * SPDX-License-Identifier:	GPL-2.0+
 */

#ifndef _pwm_h_
#define _pwm_h_
#if 0
int	pwm_init		(int pwm_id, int div, int invert);
int	pwm_config		(int pwm_id, int duty_ns, int period_ns);
int	pwm_enable		(int pwm_id);
void	pwm_disable		(int pwm_id);
#endif
enum pwm_polarity {
	PWM_POLARITY_NORMAL,
	PWM_POLARITY_INVERSED,
};

struct pwm_device {
	const char		*label;
	unsigned long		flags;
	unsigned int		hwpwm;
	unsigned int		pwm;
	struct pwm_chip		*chip;
	void			*chip_data;

	unsigned int		period; /* in nanoseconds */
};

struct pwm_chip {
	struct device		*dev;
	struct list_head	list;
	const struct pwm_ops	*ops;
	int			base;
	unsigned int		npwm;

	struct pwm_device	*pwms;

	//struct pwm_device *	(*of_xlate)(struct pwm_chip *pc,
					   // const struct of_phandle_args *args);
	unsigned int		of_pwm_n_cells;
	bool			can_sleep;
};

/* it mapping uboot2014 verison.now just only SUN50IW1P1 use this function,*/
int pwm_set_polarity(int pwm, enum pwm_polarity polarity);
int pwm_config	  (int pwm, int duty_ns, int period_ns);
int pwm_enable	  (int pwm);
int pwm_disable	  (int pwm);
int pwm_init 	  (void);
int pwm_request(int pwm, const char *label);

#endif /* _pwm_h_ */