u-boot/arch/arm/mach-s5pc1xx/include/mach/pwm.h

/* SPDX-License-Identifier: GPL-2.0+ */
/*
 * Copyright (C) 2009 Samsung Electronics
 * Kyungmin Park <kyungmin.park@samsung.com>
 * Minkyu Kang <mk7.kang@samsung.com>
 */

#ifndef __ASM_ARM_ARCH_PWM_H_
#define __ASM_ARM_ARCH_PWM_H_

#define PRESCALER_0		(8 - 1)		/* prescaler of timer 0, 1 */
#define PRESCALER_1		(16 - 1)	/* prescaler of timer 2, 3, 4 */

/* Divider MUX */
#define MUX_DIV_1		0		/* 1/1 period */
#define MUX_DIV_2		1		/* 1/2 period */
#define MUX_DIV_4		2		/* 1/4 period */
#define MUX_DIV_8		3		/* 1/8 period */
#define MUX_DIV_16		4		/* 1/16 period */

#define MUX_DIV_SHIFT(x)	(x * 4)

#define TCON_OFFSET(x)		((x + 1) * (!!x) << 2)

#define TCON_START(x)		(1 << TCON_OFFSET(x))
#define TCON_UPDATE(x)		(1 << (TCON_OFFSET(x) + 1))
#define TCON_INVERTER(x)	(1 << (TCON_OFFSET(x) + 2))
#define TCON_AUTO_RELOAD(x)	(1 << (TCON_OFFSET(x) + 3))
#define TCON4_AUTO_RELOAD	(1 << 22)

#ifndef __ASSEMBLY__
struct s5p_timer {
	unsigned int	tcfg0;
	unsigned int	tcfg1;
	unsigned int	tcon;
	unsigned int	tcntb0;
	unsigned int	tcmpb0;
	unsigned int	tcnto0;
	unsigned int	tcntb1;
	unsigned int	tcmpb1;
	unsigned int	tcnto1;
	unsigned int	tcntb2;
	unsigned int	tcmpb2;
	unsigned int	tcnto2;
	unsigned int	tcntb3;
	unsigned int	res1;
	unsigned int	tcnto3;
	unsigned int	tcntb4;
	unsigned int	tcnto4;
	unsigned int	tintcstat;
};

int s5p_pwm_init (int pwm_id, int div, int invert);
int s5p_pwm_config (int pwm_id, int duty_ns, int period_ns);
int s5p_pwm_enable (int pwm_id);
void s5p_pwm_disable (int pwm_id);
#endif	/* __ASSEMBLY__ */

#endif