linux-imx

/*

 *  lpc_sch.c - LPC interface for Intel Poulsbo SCH

 *

 *  LPC bridge function of the Intel SCH contains many other

 *  functional units, such as Interrupt controllers, Timers,

 *  Power Management, System Management, GPIO, RTC, and LPC

 *  Configuration Registers.

 *

 *  Copyright (c) 2010 CompuLab Ltd

 *  Copyright (c) 2014 Intel Corp.

 *  Author: Denis Turischev <denis@compulab.co.il>

 *

 *  This program is free software; you can redistribute it and/or modify

 *  it under the terms of the GNU General Public License 2 as published

 *  by the Free Software Foundation.

 *

 *  This program is distributed in the hope that it will be useful,

 *  but WITHOUT ANY WARRANTY; without even the implied warranty of

 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 *  GNU General Public License for more details.

 */

​

#include <linux/kernel.h>

#include <linux/module.h>

#include <linux/errno.h>

#include <linux/acpi.h>

#include <linux/pci.h>

#include <linux/mfd/core.h>

​

#define SMBASE      0x40

#define SMBUS_IO_SIZE   64

​

#define GPIOBASE    0x44

#define GPIO_IO_SIZE    64

#define GPIO_IO_SIZE_CENTERTON  128

​

/* Intel Quark X1000 GPIO IRQ Number */

#define GPIO_IRQ_QUARK_X1000    9

​

#define WDTBASE     0x84

#define WDT_IO_SIZE 64

​

enum sch_chipsets {

    LPC_SCH = 0,        /* Intel Poulsbo SCH */

    LPC_ITC,        /* Intel Tunnel Creek */

    LPC_CENTERTON,      /* Intel Centerton */

    LPC_QUARK_X1000,    /* Intel Quark X1000 */

};

​

struct lpc_sch_info {

    unsigned int io_size_smbus;

    unsigned int io_size_gpio;

    unsigned int io_size_wdt;

    int irq_gpio;

};

​

static struct lpc_sch_info sch_chipset_info[] = {

    [LPC_SCH] = {

        .io_size_smbus = SMBUS_IO_SIZE,

        .io_size_gpio = GPIO_IO_SIZE,

        .irq_gpio = -1,

    },

    [LPC_ITC] = {