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

/*
 * Generic GPIO driver for logic cells found in the Nomadik SoC
 *
 * Copyright (C) 2008,2009 STMicroelectronics
 * Copyright (C) 2009 Alessandro Rubini <rubini@unipv.it>
 *   Rewritten based on work by Prafulla WADASKAR <prafulla.wadaskar@st.com>
 * Copyright (C) 2011 Linus Walleij <linus.walleij@linaro.org>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/device.h>
#include <linux/platform_device.h>
#include <linux/io.h>
#include <linux/clk.h>
#include <linux/err.h>
#include <linux/gpio.h>
#include <linux/spinlock.h>
#include <linux/interrupt.h>
#include <linux/irq.h>
#include <linux/irqdomain.h>
#include <linux/slab.h>
#include <linux/pinctrl/pinctrl.h>

#include <asm/mach/irq.h>

#include <plat/pincfg.h>
#include <plat/gpio-nomadik.h>

#include "pinctrl-nomadik.h"

/*
 * The GPIO module in the Nomadik family of Systems-on-Chip is an
 * AMBA device, managing 32 pins and alternate functions.  The logic block
 * is currently used in the Nomadik and ux500.
 *
 * Symbols in this file are called "nmk_gpio" for "nomadik gpio"
 */

#define NMK_GPIO_PER_CHIP	32

struct nmk_gpio_chip {
	struct gpio_chip chip;
	struct irq_domain *domain;
	void __iomem *addr;
	struct clk *clk;
	unsigned int bank;
	unsigned int parent_irq;
	int secondary_parent_irq;
	u32 (*get_secondary_status)(unsigned int bank);
	void (*set_ioforce)(bool enable);
	spinlock_t lock;
	bool sleepmode;
	/* Keep track of configured edges */
	u32 edge_rising;
	u32 edge_falling;
	u32 real_wake;
	u32 rwimsc;
	u32 fwimsc;
	u32 rimsc;
	u32 fimsc;
	u32 pull_up;
	u32 lowemi;
};

struct nmk_pinctrl {
	struct device *dev;
	struct pinctrl_dev *