/*
* Driver for Regulator part of Palmas PMIC Chips
*
* Copyright 2011-2012 Texas Instruments Inc.
*
* Author: Graeme Gregory <gg@slimlogic.co.uk>
*
* 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.
*
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/err.h>
#include <linux/platform_device.h>
#include <linux/regulator/driver.h>
#include <linux/regulator/machine.h>
#include <linux/slab.h>
#include <linux/regmap.h>
#include <linux/mfd/palmas.h>
#include <linux/of.h>
#include <linux/of_platform.h>
#include <linux/regulator/of_regulator.h>
struct regs_info {
char *name;
u8 vsel_addr;
u8 ctrl_addr;
u8 tstep_addr;
};
static const struct regs_info palmas_regs_info[] = {
{
.name = "SMPS12",
.vsel_addr = PALMAS_SMPS12_VOLTAGE,
.ctrl_addr = PALMAS_SMPS12_CTRL,
.tstep_addr = PALMAS_SMPS12_TSTEP,
},
{
.name = "SMPS123",
.vsel_addr = PALMAS_SMPS12_VOLTAGE,
.ctrl_addr = PALMAS_SMPS12_CTRL,
.tstep_addr = PALMAS_SMPS12_TSTEP,
},
{
.name = "SMPS3",
.vsel_addr = PALMAS_SMPS3_VOLTAGE,
.ctrl_addr = PALMAS_SMPS3_CTRL,
},
{
.name = "SMPS45",
.vsel_addr = PALMAS_SMPS45_VOLTAGE,
.ctrl_addr = PALMAS_SMPS45_CTRL,
.tstep_addr = PALMAS_SMPS45_TSTEP,
},
{
.name = "SMPS457",
.vsel_addr = PALMAS_SMPS45_VOLTAGE,
.ctrl_addr = PALMAS_SMPS45_CTRL,
.tstep_addr = PALMAS_SMPS45_TSTEP,
},
{
.name = "SMPS6",
.vsel_addr = PALMAS_SMPS6_VOLTAGE,
.ctrl_addr = PALMAS_SMPS6_CTRL,
.tstep_addr = PALMAS_SMPS6_TSTEP,
},
{
.name = "SMPS7",
.vsel_addr = PALMAS_SMPS7_VOLTAGE,
.ctrl_addr = PALMAS_SMPS7_CTRL,
},
{
.name = "SMPS8",
.vsel_addr = PALMAS_SMPS8_VOLTAGE,
.ctrl_addr = PALMAS_SMPS8_CTRL,
.tstep_addr = PALMAS_SMPS8_TSTEP,
},
{
.name = "SMPS9",
.vsel_addr = PALMAS_SMPS9_VOLTAGE,
.ctrl_addr = PALMAS_SMPS9_CTRL,
},
{
.name = "SMPS10",
},
{
.name = "LDO1",
.vsel_addr = PALMAS_LDO1_VOLTAGE,
.ctrl_addr = PALMAS_LDO1_CTRL,
},
{
.name = "LDO2",
.vsel_addr = PALMAS_LDO2_VOLTAGE,
.ctrl_addr = PALMAS_LDO2_CTRL,
},
{
.name = "LDO3",
.vsel_addr = PALMAS_LDO3_VOLTAGE,
.ctrl_addr = PALMAS_LDO3_CTRL,
},
{
.name = "LDO4",
.vsel_addr = PALMAS_LDO4_VOLTAGE,
.ctrl_addr = PALMAS_LDO4_CTRL,
},
{
.name = "LDO5",
.vsel_addr = PALMAS_LDO5_VOLTAGE,
.ctrl_addr = PALMAS_LDO5_CTRL,
},
{
.name = "LDO6",
.vsel_addr = PALMAS_LDO6_VOLTAGE,
.ctrl_addr = PALMAS_LDO6_CTRL,
},
{
.name = "LDO7",
.vsel_addr = PALMAS_LDO7_VOLTAGE,
.ctrl_addr = PALMAS_LDO7_CTRL,
},
{
.name = "LDO8",
.vsel_addr = PALMAS_LDO8_VOLTAGE,
.ctrl_addr = PALMAS_LDO8_CTRL,
},
{
.name = "LDO9",
.vsel_addr = PALMAS_LDO9_VOLTAGE,
.ctrl_addr = PALMAS_LDO9_CTRL,
},
{
.name = "LDOLN",
.vsel_addr = PALMAS_LDOLN_VOLTAGE,
.ctrl_addr = PALMAS_LDOLN_CTRL,
},
{
.name = "LDOUSB",
.vsel_addr = PALMAS_LDOUSB_VOLTAGE,
.ctrl_addr = PALMAS_LDOUSB_CTRL,
},
};
#define SMPS_CTRL_MODE_OFF 0x00
#define SMPS_CTRL_MODE_ON 0x01
#define SMPS_CTRL_MODE_ECO 0x02
#define SMPS_CTRL_MODE_PWM 0x03
/* These values are derived from the data sheet. And are the number of steps
* where there is a voltage change, the ranges at beginning and end of register
* max/min values where there are no change are ommitted.
*
* So they are basically (maxV-minV)/stepV
*/
#define PALMAS_SMPS_NUM_VOLTAGES 116
#define PALMAS_SMPS10_NUM_VOLTAGES 2
#define PALMAS_LDO_NUM_VOLTAGES 50
#define SMPS10_VSEL (1<<3)
#define SMPS10_BOOST_EN (1<<2)
#define SMPS10_BYPASS_EN (1<<1)
#define SMPS10_SWITCH_EN (1<<0)
#define REGULATOR_SLAVE 0
static int palmas_smps_read(struct palmas *palmas, unsigned int reg,
unsigned int *dest)
{
unsigned int addr;
addr = PALMAS_BASE_TO_REG(PALMAS_SMPS_BASE, reg);
return regmap_read(palmas->regmap[REGULATOR_SLAVE], addr, dest);
}
static int palmas_smps_write(struct palmas *palmas, unsigned int reg,
unsigned int value)
{
unsigned int addr;
addr = PALMAS_BASE_TO_REG(PALMAS_SMPS_BASE, reg);
return regmap_write(palmas->regmap[REGULATOR_SLAVE], addr, value);
}
static int palmas_ldo_read(struct palmas *palmas, unsigned int reg,
unsigned int *dest)
{
unsigned int addr;
addr = PALMAS_BASE_TO_REG(PALMAS_LDO_BASE, reg);
return