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

/*
 * Copyright (C) 2013 Broadcom Corporation
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation version 2.
 *
 * This program is distributed "as is" WITHOUT ANY WARRANTY of any
 * kind, whether express or implied; without even the implied warranty
 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 */
#include <linux/err.h>
#include <linux/io.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/platform_device.h>
#include <linux/pinctrl/pinctrl.h>
#include <linux/pinctrl/pinmux.h>
#include <linux/pinctrl/pinconf.h>
#include <linux/pinctrl/pinconf-generic.h>
#include <linux/regmap.h>
#include <linux/slab.h>
#include "core.h"
#include "pinctrl-utils.h"

/* Capri Pin Control Registers Definitions */

/* Function Select bits are the same for all pin control registers */
#define CAPRI_PIN_REG_F_SEL_MASK		0x0700
#define CAPRI_PIN_REG_F_SEL_SHIFT		8

/* Standard pin register */
#define CAPRI_STD_PIN_REG_DRV_STR_MASK		0x0007
#define CAPRI_STD_PIN_REG_DRV_STR_SHIFT		0
#define CAPRI_STD_PIN_REG_INPUT_DIS_MASK	0x0008
#define CAPRI_STD_PIN_REG_INPUT_DIS_SHIFT	3
#define CAPRI_STD_PIN_REG_SLEW_MASK		0x0010
#define CAPRI_STD_PIN_REG_SLEW_SHIFT		4
#define CAPRI_STD_PIN_REG_PULL_UP_MASK		0x0020
#define CAPRI_STD_PIN_REG_PULL_UP_SHIFT		5
#define CAPRI_STD_PIN_REG_PULL_DN_MASK		0x0040
#define CAPRI_STD_PIN_REG_PULL_DN_SHIFT		6
#define CAPRI_STD_PIN_REG_HYST_MASK		0x0080
#define CAPRI_STD_PIN_REG_HYST_SHIFT		7

/* I2C pin register */
#define CAPRI_I2C_PIN_REG_INPUT_DIS_MASK	0x0004
#define CAPRI_I2C_PIN_REG_INPUT_DIS_SHIFT	2
#define CAPRI_I2C_PIN_REG_SLEW_MASK		0x0008
#define CAPRI_I2C_PIN_REG_SLEW_SHIFT		3
#define CAPRI_I2C_PIN_REG_PULL_UP_STR_MASK	0x0070
#define CAPRI_I2C_PIN_REG_PULL_UP_STR_SHIFT	4

/* HDMI pin register */
#define CAPRI_HDMI_PIN_REG_INPUT_DIS_MASK	0x0008
#define CAPRI_HDMI_PIN_REG_INPUT_DIS_SHIFT	3
#define CAPRI_HDMI_PIN_REG_MODE_MASK		0x0010
#define CAPRI_HDMI_PIN_REG_MODE_SHIFT		4

/**
 * capri_pin_type - types of pin register
 */
enum capri_pin_type {
	CAPRI_PIN_TYPE_UNKNOWN = 0,
	CAPRI_PIN_TYPE_STD,
	CAPRI_PIN_TYPE_I2C,
	CAPRI_PIN_TYPE_HDMI,
};

static enum capri_pin_type std_pin = CAPRI_PIN_TYPE_STD;
static enum capri_pin_type i2c_pin = CAPRI_PIN_TYPE_I2C;
static enum capri_pin_type hdmi_pin = CAPRI_PIN_TYPE_HDMI;

/**
 * capri_pin_function- define pin function
 */
struct capri_pin_function {
	const char *name;
	const char * const *groups;
	const unsigned ngroups;
};

/**
 * capri_pinctrl_data - Broadcom