linux-imx

/*

 * 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.

 *

 * 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.

 *

 * Copyright (C) 2012 ARM Limited

 */

​

#include <linux/gpio/driver.h>

#include <linux/err.h>

#include <linux/io.h>

#include <linux/mfd/core.h>

#include <linux/of_address.h>

#include <linux/of_platform.h>

#include <linux/platform_data/syscon.h>

#include <linux/platform_device.h>

#include <linux/slab.h>

#include <linux/stat.h>

#include <linux/vexpress.h>

​

#define SYS_ID          0x000

#define SYS_SW          0x004

#define SYS_LED         0x008

#define SYS_100HZ       0x024

#define SYS_FLAGSSET        0x030

#define SYS_FLAGSCLR        0x034

#define SYS_NVFLAGS     0x038

#define SYS_NVFLAGSSET      0x038

#define SYS_NVFLAGSCLR      0x03c

#define SYS_MCI         0x048

#define SYS_FLASH       0x04c

#define SYS_CFGSW       0x058

#define SYS_24MHZ       0x05c

#define SYS_MISC        0x060

#define SYS_DMA         0x064

#define SYS_PROCID0     0x084

#define SYS_PROCID1     0x088

#define SYS_CFGDATA     0x0a0

#define SYS_CFGCTRL     0x0a4

#define SYS_CFGSTAT     0x0a8

​

#define SYS_HBI_MASK        0xfff

#define SYS_PROCIDx_HBI_SHIFT   0

​

#define SYS_MISC_MASTERSITE (1 << 14)

​

void vexpress_flags_set(u32 data)

{

    static void __iomem *base;

​

    if (!base) {

        struct device_node *node = of_find_compatible_node(NULL, NULL,

                "arm,vexpress-sysreg");

​

        base = of_iomap(node, 0);

    }

​

    if (WARN_ON(!base))