linux-imx

/*

 * tps65010 - driver for tps6501x power management chips

 *

 * Copyright (C) 2004 Texas Instruments

 * Copyright (C) 2004-2005 David Brownell

 *

 * 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.

 *

 * 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., 675 Mass Ave, Cambridge, MA 02139, USA.

 */

​

#include <linux/kernel.h>

#include <linux/module.h>

#include <linux/init.h>

#include <linux/slab.h>

#include <linux/interrupt.h>

#include <linux/i2c.h>

#include <linux/delay.h>

#include <linux/workqueue.h>

#include <linux/debugfs.h>

#include <linux/seq_file.h>

#include <linux/mutex.h>

#include <linux/platform_device.h>

​

#include <linux/mfd/tps65010.h>

​

#include <linux/gpio/driver.h>

​

​

/*-------------------------------------------------------------------------*/

​

#define DRIVER_VERSION  "2 May 2005"

#define DRIVER_NAME (tps65010_driver.driver.name)

​

MODULE_DESCRIPTION("TPS6501x Power Management Driver");

MODULE_LICENSE("GPL");

​

static struct i2c_driver tps65010_driver;

​

/*-------------------------------------------------------------------------*/

​

/* This driver handles a family of multipurpose chips, which incorporate

 * voltage regulators, lithium ion/polymer battery charging, GPIOs, LEDs,

 * and other features often needed in portable devices like cell phones

 * or digital cameras.

 *

 * The tps65011 and tps65013 have different voltage settings compared

 * to tps65010 and tps65012.  The tps65013 has a NO_CHG status/irq.

 * All except tps65010 have "wait" mode, possibly defaulted so that

 * battery-insert != device-on.

 *

 * We could distinguish between some models by checking VDCDC1.UVLO or

 * other registers, unless they've been changed already after powerup

 * as part of board setup by a bootloader.

 */

enum tps_model {

    TPS65010,

    TPS65011,

    TPS65012,

    TPS65013,

};

​

struct tps65010 {

    struct i2c_client   *client;

    struct mutex        lock;

    struct delayed_work work;

    struct dentry       *file;

    unsigned        charging:1;

    unsigned        por:1;

    unsigned        model:8;

    u16         vbus;

    unsigned long       flags;

#define FLAG_VBUS_CHANGED   0

#define FLAG_IRQ_ENABLE     1

​

    /* copies of last register state */

    u8          chgstatus, regstatus, chgconf;

    u8          nmask1, nmask2;

​

    u8          outmask;

    struct gpio_chip    chip;

    struct platform_device  *leds;