linux-imx

/*

 * STA2x11 mfd for GPIO, SCTL and APBREG

 *

 * Copyright (c) 2009-2011 Wind River Systems, Inc.

 * Copyright (c) 2011 ST Microelectronics (Alessandro Rubini, Davide Ciminaghi)

 *

 * 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.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA

 *

 */

​

#include <linux/kernel.h>

#include <linux/init.h>

#include <linux/export.h>

#include <linux/spinlock.h>

#include <linux/errno.h>

#include <linux/device.h>

#include <linux/slab.h>

#include <linux/list.h>

#include <linux/io.h>

#include <linux/ioport.h>

#include <linux/pci.h>

#include <linux/seq_file.h>

#include <linux/platform_device.h>

#include <linux/mfd/core.h>

#include <linux/mfd/sta2x11-mfd.h>

#include <linux/regmap.h>

​

#include <asm/sta2x11.h>

​

static inline int __reg_within_range(unsigned int r,

                     unsigned int start,

                     unsigned int end)

{

    return ((r >= start) && (r <= end));

}

​

/* This describes STA2X11 MFD chip for us, we may have several */

struct sta2x11_mfd {

    struct sta2x11_instance *instance;

    struct regmap *regmap[sta2x11_n_mfd_plat_devs];

    spinlock_t lock[sta2x11_n_mfd_plat_devs];

    struct list_head list;

    void __iomem *regs[sta2x11_n_mfd_plat_devs];

};

​

static LIST_HEAD(sta2x11_mfd_list);

​

/* Three functions to act on the list */

static struct sta2x11_mfd *sta2x11_mfd_find(struct pci_dev *pdev)

{

    struct sta2x11_instance *instance;

    struct sta2x11_mfd *mfd;