/*
* SMSC ECE1099
*
* Copyright 2012 Texas Instruments Inc.
*
* Author: Sourav Poddar <[email protected]>
*
* 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; either version 2 of the License, or (at your
* option) any later version.
*
*/

#ifndef __LINUX_MFD_SMSC_H
#define __LINUX_MFD_SMSC_H

#include <linux/regmap.h>

#define SMSC_ID_ECE1099 1
#define SMSC_NUM_CLIENTS 2

#define SMSC_BASE_ADDR 0x38
#define OMAP_GPIO_SMSC_IRQ 151

#define SMSC_MAXGPIO 32
#define SMSC_BANK(offs) ((offs) >> 3)
#define SMSC_BIT(offs) (1u << ((offs) & 0x7))

struct smsc {
struct device *dev;
struct i2c_client *i2c_clients[SMSC_NUM_CLIENTS];
struct regmap *regmap;
int clk;
/* Stored chip id */
int id;
};

struct smsc_gpio;
struct smsc_keypad;

static inline int smsc_read(struct device *child, unsigned int reg,
unsigned int *dest)
{
struct smsc *smsc = dev_get_drvdata(child->parent);

return regmap_read(smsc->regmap, reg, dest);
}

static inline int smsc_write(struct device *child, unsigned int reg,
unsigned int value)
{
struct smsc *smsc = dev_get_drvdata(child->parent);

return regmap_write(smsc->regmap, reg, value);
}

/* Registers for SMSC */
#define SMSC_RESET 0xF5
#define SMSC_GRP_INT 0xF9
#define SMSC_CLK_CTRL 0xFA
#define SMSC_WKUP_CTRL 0xFB
#define SMSC_DEV_ID 0xFC
#define SMSC_DEV_REV 0xFD
#define SMSC_VEN_ID_L 0xFE
#define SMSC_VEN_ID_H 0xFF

/* CLK VALUE */
#define SMSC_CLK_VALUE 0x13

/* Registers for function GPIO INPUT */
#define SMSC_GPIO_DATA_IN_START 0x00

/* Registers for function GPIO OUPUT */
#define SMSC_GPIO_DATA_OUT_START 0x05

/* Definitions for SMSC GPIO CONFIGURATION REGISTER*/
#define SMSC_GPIO_INPUT_LOW 0x01
#define SMSC_GPIO_INPUT_RISING 0x09
#define SMSC_GPIO_INPUT_FALLING 0x11
#define SMSC_GPIO_INPUT_BOTH_EDGE 0x19
#define SMSC_GPIO_OUTPUT_PP 0x21
#define SMSC_GPIO_OUTPUT_OP 0x31

#define GRP_INT_STAT 0xf9
#define SMSC_GPI_INT 0x0f
#define SMSC_CFG_START 0x0A

/* Registers for SMSC GPIO INTERRUPT STATUS REGISTER*/
#define SMSC_GPIO_INT_STAT_START 0x32

/* Registers for SMSC GPIO INTERRUPT MASK REGISTER*/
#define SMSC_GPIO_INT_MASK_START 0x37

/* Registers for SMSC function KEYPAD*/
#define SMSC_KP_OUT 0x40
#define SMSC_KP_IN 0x41
#define SMSC_KP_INT_STAT 0x42
#define SMSC_KP_INT_MASK 0x43

/* Definitions for keypad */
#define SMSC_KP_KSO 0x70
#define SMSC_KP_KSI 0x51
#define SMSC_KSO_ALL_LOW 0x20
#define SMSC_KP_SET_LOW_PWR 0x0B
#define SMSC_KP_SET_HIGH 0xFF
#define SMSC_KSO_EVAL 0x00

#endif /* __LINUX_MFD_SMSC_H */