linux-imx

/*

 * tps80031-regulator.c -- TI TPS80031 regulator driver.

 *

 * Regulator driver for TI TPS80031/TPS80032 Fully Integrated Power

 * Management with Power Path and Battery Charger.

 *

 * Copyright (c) 2012, NVIDIA Corporation.

 *

 * Author: Laxman Dewangan <ldewangan@nvidia.com>

 *

 * 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 version 2.

 *

 * This program is distributed "as is" WITHOUT ANY WARRANTY of any kind,

 * whether express or implied; 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/delay.h>

#include <linux/err.h>

#include <linux/init.h>

#include <linux/kernel.h>

#include <linux/mfd/tps80031.h>

#include <linux/module.h>

#include <linux/platform_device.h>

#include <linux/regulator/driver.h>

#include <linux/regulator/machine.h>

#include <linux/slab.h>

​

/* Flags for DCDC Voltage reading */

#define DCDC_OFFSET_EN      BIT(0)

#define DCDC_EXTENDED_EN    BIT(1)

#define TRACK_MODE_ENABLE   BIT(2)

​

#define SMPS_MULTOFFSET_VIO BIT(1)

#define SMPS_MULTOFFSET_SMPS1   BIT(3)

#define SMPS_MULTOFFSET_SMPS2   BIT(4)

#define SMPS_MULTOFFSET_SMPS3   BIT(6)

#define SMPS_MULTOFFSET_SMPS4   BIT(0)

​

#define SMPS_CMD_MASK       0xC0

#define SMPS_VSEL_MASK      0x3F

#define LDO_VSEL_MASK       0x1F

#define LDO_TRACK_VSEL_MASK 0x3F

​

#define MISC2_LDOUSB_IN_VSYS    BIT(4)

#define MISC2_LDOUSB_IN_PMID    BIT(3)

#define MISC2_LDOUSB_IN_MASK    0x18

​

#define MISC2_LDO3_SEL_VIB_VAL  BIT(0)

#define MISC2_LDO3_SEL_VIB_MASK 0x1

​

#define BOOST_HW_PWR_EN     BIT(5)

#define BOOST_HW_PWR_EN_MASK    BIT(5)

​

#define OPA_MODE_EN     BIT(6)

#define OPA_MODE_EN_MASK    BIT(6)

​

#define USB_VBUS_CTRL_SET   0x04

#define USB_VBUS_CTRL_CLR   0x05

#define VBUS_DISCHRG        0x20

​

struct tps80031_regulator_info {

    /* Regulator register address.*/

    u8      trans_reg;

    u8      state_reg;

    u8      force_reg;

    u8      volt_reg;

    u8      volt_id;

​

    /*Power request bits */

    int     preq_bit;

​

    /* used by regulator core */

    struct regulator_desc   desc;

​

};

​

struct tps80031_regulator {

    struct device           *dev;

    struct regulator_dev        *rdev;

    struct tps80031_regulator_info  *rinfo;

​

    u8              device_flags;

    unsigned int            config_flags;