path: root/drivers/pinctrl/pinctrl-xway.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 *  linux/drivers/pinctrl/pinmux-xway.c
 *  based on linux/drivers/pinctrl/pinmux-pxa910.c
 *
 *  Copyright (C) 2012 John Crispin <john@phrozen.org>
 *  Copyright (C) 2015 Martin Schiller <mschiller@tdt.de>
 */

#include <linux/err.h>
#include <linux/gpio/driver.h>
#include <linux/slab.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/ioport.h>
#include <linux/io.h>
#include <linux/device.h>
#include <linux/platform_device.h>
#include <linux/property.h>

#include "pinctrl-lantiq.h"

#include <lantiq_soc.h>

/* we have up to 4 banks of 16 bit each */
#define PINS			16
#define PORT3			3
#define PORT(x)			(x / PINS)
#define PORT_PIN(x)		(x % PINS)

/* we have 2 mux bits that can be set for each pin */
#define MUX_ALT0	0x1
#define MUX_ALT1	0x2

/*
 * each bank has this offset apart from the 4th bank that is mixed into the
 * other 3 ranges
 */
#define REG_OFF			0x30

/* these are the offsets to our registers */
#define GPIO_BASE(p)		(REG_OFF * PORT(p))
#define GPIO_OUT(p)		GPIO_BASE(p)
#define GPIO_IN(p)		(GPIO_BASE(p) + 0x04)
#define GPIO_DIR(p)		(GPIO_BASE(p) + 0x08)