816 lines
19 KiB
C
816 lines
19 KiB
C
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/*
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* Driver for Regulator part of Palmas PMIC Chips
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*
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* Copyright 2011-2012 Texas Instruments Inc.
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*
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* Author: Graeme Gregory <gg@slimlogic.co.uk>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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*/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/err.h>
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#include <linux/platform_device.h>
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#include <linux/regulator/driver.h>
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#include <linux/regulator/machine.h>
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#include <linux/slab.h>
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#include <linux/regmap.h>
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#include <linux/mfd/palmas.h>
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struct regs_info {
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char *name;
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u8 vsel_addr;
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u8 ctrl_addr;
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u8 tstep_addr;
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};
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static const struct regs_info palmas_regs_info[] = {
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{
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.name = "SMPS12",
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.vsel_addr = PALMAS_SMPS12_VOLTAGE,
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.ctrl_addr = PALMAS_SMPS12_CTRL,
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.tstep_addr = PALMAS_SMPS12_TSTEP,
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},
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{
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.name = "SMPS123",
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.vsel_addr = PALMAS_SMPS12_VOLTAGE,
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.ctrl_addr = PALMAS_SMPS12_CTRL,
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.tstep_addr = PALMAS_SMPS12_TSTEP,
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},
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{
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.name = "SMPS3",
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.vsel_addr = PALMAS_SMPS3_VOLTAGE,
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.ctrl_addr = PALMAS_SMPS3_CTRL,
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},
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{
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.name = "SMPS45",
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.vsel_addr = PALMAS_SMPS45_VOLTAGE,
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.ctrl_addr = PALMAS_SMPS45_CTRL,
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.tstep_addr = PALMAS_SMPS45_TSTEP,
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},
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{
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.name = "SMPS457",
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.vsel_addr = PALMAS_SMPS45_VOLTAGE,
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.ctrl_addr = PALMAS_SMPS45_CTRL,
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.tstep_addr = PALMAS_SMPS45_TSTEP,
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},
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{
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.name = "SMPS6",
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.vsel_addr = PALMAS_SMPS6_VOLTAGE,
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.ctrl_addr = PALMAS_SMPS6_CTRL,
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.tstep_addr = PALMAS_SMPS6_TSTEP,
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},
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{
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.name = "SMPS7",
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.vsel_addr = PALMAS_SMPS7_VOLTAGE,
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.ctrl_addr = PALMAS_SMPS7_CTRL,
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},
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{
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.name = "SMPS8",
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.vsel_addr = PALMAS_SMPS8_VOLTAGE,
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.ctrl_addr = PALMAS_SMPS8_CTRL,
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.tstep_addr = PALMAS_SMPS8_TSTEP,
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},
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{
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.name = "SMPS9",
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.vsel_addr = PALMAS_SMPS9_VOLTAGE,
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.ctrl_addr = PALMAS_SMPS9_CTRL,
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},
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{
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.name = "SMPS10",
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},
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{
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.name = "LDO1",
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.vsel_addr = PALMAS_LDO1_VOLTAGE,
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.ctrl_addr = PALMAS_LDO1_CTRL,
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},
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{
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.name = "LDO2",
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.vsel_addr = PALMAS_LDO2_VOLTAGE,
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.ctrl_addr = PALMAS_LDO2_CTRL,
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},
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{
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.name = "LDO3",
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.vsel_addr = PALMAS_LDO3_VOLTAGE,
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.ctrl_addr = PALMAS_LDO3_CTRL,
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},
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{
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.name = "LDO4",
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.vsel_addr = PALMAS_LDO4_VOLTAGE,
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.ctrl_addr = PALMAS_LDO4_CTRL,
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},
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{
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.name = "LDO5",
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.vsel_addr = PALMAS_LDO5_VOLTAGE,
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.ctrl_addr = PALMAS_LDO5_CTRL,
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},
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{
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.name = "LDO6",
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.vsel_addr = PALMAS_LDO6_VOLTAGE,
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.ctrl_addr = PALMAS_LDO6_CTRL,
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},
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{
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.name = "LDO7",
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.vsel_addr = PALMAS_LDO7_VOLTAGE,
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.ctrl_addr = PALMAS_LDO7_CTRL,
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},
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{
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.name = "LDO8",
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.vsel_addr = PALMAS_LDO8_VOLTAGE,
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.ctrl_addr = PALMAS_LDO8_CTRL,
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},
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{
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.name = "LDO9",
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.vsel_addr = PALMAS_LDO9_VOLTAGE,
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.ctrl_addr = PALMAS_LDO9_CTRL,
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},
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{
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.name = "LDOLN",
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.vsel_addr = PALMAS_LDOLN_VOLTAGE,
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.ctrl_addr = PALMAS_LDOLN_CTRL,
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},
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{
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.name = "LDOUSB",
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.vsel_addr = PALMAS_LDOUSB_VOLTAGE,
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.ctrl_addr = PALMAS_LDOUSB_CTRL,
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},
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};
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#define SMPS_CTRL_MODE_OFF 0x00
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#define SMPS_CTRL_MODE_ON 0x01
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#define SMPS_CTRL_MODE_ECO 0x02
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#define SMPS_CTRL_MODE_PWM 0x03
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/* These values are derived from the data sheet. And are the number of steps
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* where there is a voltage change, the ranges at beginning and end of register
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* max/min values where there are no change are ommitted.
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*
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* So they are basically (maxV-minV)/stepV
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*/
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#define PALMAS_SMPS_NUM_VOLTAGES 116
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#define PALMAS_SMPS10_NUM_VOLTAGES 2
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#define PALMAS_LDO_NUM_VOLTAGES 50
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#define SMPS10_VSEL (1<<3)
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#define SMPS10_BOOST_EN (1<<2)
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#define SMPS10_BYPASS_EN (1<<1)
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#define SMPS10_SWITCH_EN (1<<0)
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#define REGULATOR_SLAVE 0
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static int palmas_smps_read(struct palmas *palmas, unsigned int reg,
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unsigned int *dest)
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{
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unsigned int addr;
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addr = PALMAS_BASE_TO_REG(PALMAS_SMPS_BASE, reg);
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return regmap_read(palmas->regmap[REGULATOR_SLAVE], addr, dest);
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}
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static int palmas_smps_write(struct palmas *palmas, unsigned int reg,
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unsigned int value)
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{
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unsigned int addr;
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addr = PALMAS_BASE_TO_REG(PALMAS_SMPS_BASE, reg);
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return regmap_write(palmas->regmap[REGULATOR_SLAVE], addr, value);
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}
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static int palmas_ldo_read(struct palmas *palmas, unsigned int reg,
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unsigned int *dest)
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{
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unsigned int addr;
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addr = PALMAS_BASE_TO_REG(PALMAS_LDO_BASE, reg);
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return regmap_read(palmas->regmap[REGULATOR_SLAVE], addr, dest);
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}
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static int palmas_ldo_write(struct palmas *palmas, unsigned int reg,
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unsigned int value)
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{
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unsigned int addr;
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addr = PALMAS_BASE_TO_REG(PALMAS_LDO_BASE, reg);
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return regmap_write(palmas->regmap[REGULATOR_SLAVE], addr, value);
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}
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static int palmas_is_enabled_smps(struct regulator_dev *dev)
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{
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struct palmas_pmic *pmic = rdev_get_drvdata(dev);
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int id = rdev_get_id(dev);
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unsigned int reg;
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palmas_smps_read(pmic->palmas, palmas_regs_info[id].ctrl_addr, ®);
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reg &= PALMAS_SMPS12_CTRL_STATUS_MASK;
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reg >>= PALMAS_SMPS12_CTRL_STATUS_SHIFT;
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return !!(reg);
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}
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static int palmas_enable_smps(struct regulator_dev *dev)
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{
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struct palmas_pmic *pmic = rdev_get_drvdata(dev);
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int id = rdev_get_id(dev);
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unsigned int reg;
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palmas_smps_read(pmic->palmas, palmas_regs_info[id].ctrl_addr, ®);
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reg &= ~PALMAS_SMPS12_CTRL_MODE_ACTIVE_MASK;
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reg |= SMPS_CTRL_MODE_ON;
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palmas_smps_write(pmic->palmas, palmas_regs_info[id].ctrl_addr, reg);
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return 0;
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}
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static int palmas_disable_smps(struct regulator_dev *dev)
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{
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struct palmas_pmic *pmic = rdev_get_drvdata(dev);
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int id = rdev_get_id(dev);
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unsigned int reg;
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palmas_smps_read(pmic->palmas, palmas_regs_info[id].ctrl_addr, ®);
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reg &= ~PALMAS_SMPS12_CTRL_MODE_ACTIVE_MASK;
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palmas_smps_write(pmic->palmas, palmas_regs_info[id].ctrl_addr, reg);
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return 0;
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}
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static int palmas_set_mode_smps(struct regulator_dev *dev, unsigned int mode)
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{
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struct palmas_pmic *pmic = rdev_get_drvdata(dev);
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int id = rdev_get_id(dev);
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unsigned int reg;
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palmas_smps_read(pmic->palmas, palmas_regs_info[id].ctrl_addr, ®);
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reg &= ~PALMAS_SMPS12_CTRL_STATUS_MASK;
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reg >>= PALMAS_SMPS12_CTRL_STATUS_SHIFT;
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switch (mode) {
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case REGULATOR_MODE_NORMAL:
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reg |= SMPS_CTRL_MODE_ON;
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break;
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case REGULATOR_MODE_IDLE:
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reg |= SMPS_CTRL_MODE_ECO;
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break;
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case REGULATOR_MODE_FAST:
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reg |= SMPS_CTRL_MODE_PWM;
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break;
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default:
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return -EINVAL;
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}
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palmas_smps_write(pmic->palmas, palmas_regs_info[id].ctrl_addr, reg);
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return 0;
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}
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static unsigned int palmas_get_mode_smps(struct regulator_dev *dev)
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{
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struct palmas_pmic *pmic = rdev_get_drvdata(dev);
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int id = rdev_get_id(dev);
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unsigned int reg;
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palmas_smps_read(pmic->palmas, palmas_regs_info[id].ctrl_addr, ®);
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reg &= PALMAS_SMPS12_CTRL_STATUS_MASK;
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reg >>= PALMAS_SMPS12_CTRL_STATUS_SHIFT;
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switch (reg) {
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case SMPS_CTRL_MODE_ON:
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return REGULATOR_MODE_NORMAL;
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case SMPS_CTRL_MODE_ECO:
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return REGULATOR_MODE_IDLE;
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case SMPS_CTRL_MODE_PWM:
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return REGULATOR_MODE_FAST;
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}
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return 0;
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}
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static int palmas_list_voltage_smps(struct regulator_dev *dev,
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unsigned selector)
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{
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struct palmas_pmic *pmic = rdev_get_drvdata(dev);
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int id = rdev_get_id(dev);
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int mult = 1;
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if (!selector)
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return 0;
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/* Read the multiplier set in VSEL register to return
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* the correct voltage.
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*/
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if (pmic->range[id])
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mult = 2;
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/* Voltage is (0.49V + (selector * 0.01V)) * RANGE
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* as defined in data sheet. RANGE is either x1 or x2
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*/
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return (490000 + (selector * 10000)) * mult;
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}
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static int palmas_get_voltage_smps_sel(struct regulator_dev *dev)
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{
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struct palmas_pmic *pmic = rdev_get_drvdata(dev);
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int id = rdev_get_id(dev);
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int selector;
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unsigned int reg;
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unsigned int addr;
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addr = palmas_regs_info[id].vsel_addr;
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palmas_smps_read(pmic->palmas, addr, ®);
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selector = reg & PALMAS_SMPS12_VOLTAGE_VSEL_MASK;
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/* Adjust selector to match list_voltage ranges */
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if ((selector > 0) && (selector < 6))
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selector = 6;
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if (!selector)
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selector = 5;
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if (selector > 121)
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selector = 121;
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selector -= 5;
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return selector;
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}
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static int palmas_set_voltage_smps_sel(struct regulator_dev *dev,
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unsigned selector)
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{
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struct palmas_pmic *pmic = rdev_get_drvdata(dev);
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int id = rdev_get_id(dev);
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unsigned int reg = 0;
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unsigned int addr;
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addr = palmas_regs_info[id].vsel_addr;
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/* Make sure we don't change the value of RANGE */
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if (pmic->range[id])
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reg |= PALMAS_SMPS12_VOLTAGE_RANGE;
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/* Adjust the linux selector into range used in VSEL register */
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if (selector)
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reg |= selector + 5;
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palmas_smps_write(pmic->palmas, addr, reg);
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return 0;
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}
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static int palmas_map_voltage_smps(struct regulator_dev *rdev,
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int min_uV, int max_uV)
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{
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int ret, voltage;
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ret = ((min_uV - 500000) / 10000) + 1;
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if (ret < 0)
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return ret;
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/* Map back into a voltage to verify we're still in bounds */
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voltage = palmas_list_voltage_smps(rdev, ret);
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if (voltage < min_uV || voltage > max_uV)
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return -EINVAL;
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return ret;
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}
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static struct regulator_ops palmas_ops_smps = {
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.is_enabled = palmas_is_enabled_smps,
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.enable = palmas_enable_smps,
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.disable = palmas_disable_smps,
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.set_mode = palmas_set_mode_smps,
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.get_mode = palmas_get_mode_smps,
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.get_voltage_sel = palmas_get_voltage_smps_sel,
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.set_voltage_sel = palmas_set_voltage_smps_sel,
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.list_voltage = palmas_list_voltage_smps,
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.map_voltage = palmas_map_voltage_smps,
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};
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static int palmas_list_voltage_smps10(struct regulator_dev *dev,
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unsigned selector)
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{
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return 3750000 + (selector * 1250000);
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}
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static struct regulator_ops palmas_ops_smps10 = {
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.is_enabled = regulator_is_enabled_regmap,
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.enable = regulator_enable_regmap,
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.disable = regulator_disable_regmap,
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.get_voltage_sel = regulator_get_voltage_sel_regmap,
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.set_voltage_sel = regulator_set_voltage_sel_regmap,
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.list_voltage = palmas_list_voltage_smps10,
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};
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static int palmas_is_enabled_ldo(struct regulator_dev *dev)
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{
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struct palmas_pmic *pmic = rdev_get_drvdata(dev);
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int id = rdev_get_id(dev);
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unsigned int reg;
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palmas_ldo_read(pmic->palmas, palmas_regs_info[id].ctrl_addr, ®);
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reg &= PALMAS_LDO1_CTRL_STATUS;
|
||
|
|
||
|
return !!(reg);
|
||
|
}
|
||
|
|
||
|
static int palmas_list_voltage_ldo(struct regulator_dev *dev,
|
||
|
unsigned selector)
|
||
|
{
|
||
|
if (!selector)
|
||
|
return 0;
|
||
|
|
||
|
/* voltage is 0.85V + (selector * 0.05v) */
|
||
|
return 850000 + (selector * 50000);
|
||
|
}
|
||
|
|
||
|
static int palmas_get_voltage_ldo_sel(struct regulator_dev *dev)
|
||
|
{
|
||
|
struct palmas_pmic *pmic = rdev_get_drvdata(dev);
|
||
|
int id = rdev_get_id(dev);
|
||
|
int selector;
|
||
|
unsigned int reg;
|
||
|
unsigned int addr;
|
||
|
|
||
|
addr = palmas_regs_info[id].vsel_addr;
|
||
|
|
||
|
palmas_ldo_read(pmic->palmas, addr, ®);
|
||
|
|
||
|
selector = reg & PALMAS_LDO1_VOLTAGE_VSEL_MASK;
|
||
|
|
||
|
/* Adjust selector to match list_voltage ranges */
|
||
|
if (selector > 49)
|
||
|
selector = 49;
|
||
|
|
||
|
return selector;
|
||
|
}
|
||
|
|
||
|
static int palmas_set_voltage_ldo_sel(struct regulator_dev *dev,
|
||
|
unsigned selector)
|
||
|
{
|
||
|
struct palmas_pmic *pmic = rdev_get_drvdata(dev);
|
||
|
int id = rdev_get_id(dev);
|
||
|
unsigned int reg = 0;
|
||
|
unsigned int addr;
|
||
|
|
||
|
addr = palmas_regs_info[id].vsel_addr;
|
||
|
|
||
|
reg = selector;
|
||
|
|
||
|
palmas_ldo_write(pmic->palmas, addr, reg);
|
||
|
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
static int palmas_map_voltage_ldo(struct regulator_dev *rdev,
|
||
|
int min_uV, int max_uV)
|
||
|
{
|
||
|
int ret, voltage;
|
||
|
|
||
|
ret = ((min_uV - 900000) / 50000) + 1;
|
||
|
if (ret < 0)
|
||
|
return ret;
|
||
|
|
||
|
/* Map back into a voltage to verify we're still in bounds */
|
||
|
voltage = palmas_list_voltage_ldo(rdev, ret);
|
||
|
if (voltage < min_uV || voltage > max_uV)
|
||
|
return -EINVAL;
|
||
|
|
||
|
return ret;
|
||
|
}
|
||
|
|
||
|
static struct regulator_ops palmas_ops_ldo = {
|
||
|
.is_enabled = palmas_is_enabled_ldo,
|
||
|
.enable = regulator_enable_regmap,
|
||
|
.disable = regulator_disable_regmap,
|
||
|
.get_voltage_sel = palmas_get_voltage_ldo_sel,
|
||
|
.set_voltage_sel = palmas_set_voltage_ldo_sel,
|
||
|
.list_voltage = palmas_list_voltage_ldo,
|
||
|
.map_voltage = palmas_map_voltage_ldo,
|
||
|
};
|
||
|
|
||
|
/*
|
||
|
* setup the hardware based sleep configuration of the SMPS/LDO regulators
|
||
|
* from the platform data. This is different to the software based control
|
||
|
* supported by the regulator framework as it is controlled by toggling
|
||
|
* pins on the PMIC such as PREQ, SYSEN, ...
|
||
|
*/
|
||
|
static int palmas_smps_init(struct palmas *palmas, int id,
|
||
|
struct palmas_reg_init *reg_init)
|
||
|
{
|
||
|
unsigned int reg;
|
||
|
unsigned int addr;
|
||
|
int ret;
|
||
|
|
||
|
addr = palmas_regs_info[id].ctrl_addr;
|
||
|
|
||
|
ret = palmas_smps_read(palmas, addr, ®);
|
||
|
if (ret)
|
||
|
return ret;
|
||
|
|
||
|
if (id != PALMAS_REG_SMPS10) {
|
||
|
if (reg_init->warm_reset)
|
||
|
reg |= PALMAS_SMPS12_CTRL_WR_S;
|
||
|
|
||
|
if (reg_init->roof_floor)
|
||
|
reg |= PALMAS_SMPS12_CTRL_ROOF_FLOOR_EN;
|
||
|
|
||
|
if (reg_init->mode_sleep) {
|
||
|
reg &= ~PALMAS_SMPS12_CTRL_MODE_SLEEP_MASK;
|
||
|
reg |= reg_init->mode_sleep <<
|
||
|
PALMAS_SMPS12_CTRL_MODE_SLEEP_SHIFT;
|
||
|
}
|
||
|
} else {
|
||
|
if (reg_init->mode_sleep) {
|
||
|
reg &= ~PALMAS_SMPS10_CTRL_MODE_SLEEP_MASK;
|
||
|
reg |= reg_init->mode_sleep <<
|
||
|
PALMAS_SMPS10_CTRL_MODE_SLEEP_SHIFT;
|
||
|
}
|
||
|
|
||
|
}
|
||
|
ret = palmas_smps_write(palmas, addr, reg);
|
||
|
if (ret)
|
||
|
return ret;
|
||
|
|
||
|
if (palmas_regs_info[id].tstep_addr && reg_init->tstep) {
|
||
|
addr = palmas_regs_info[id].tstep_addr;
|
||
|
|
||
|
reg = reg_init->tstep & PALMAS_SMPS12_TSTEP_TSTEP_MASK;
|
||
|
|
||
|
ret = palmas_smps_write(palmas, addr, reg);
|
||
|
if (ret)
|
||
|
return ret;
|
||
|
}
|
||
|
|
||
|
if (palmas_regs_info[id].vsel_addr && reg_init->vsel) {
|
||
|
addr = palmas_regs_info[id].vsel_addr;
|
||
|
|
||
|
reg = reg_init->vsel;
|
||
|
|
||
|
ret = palmas_smps_write(palmas, addr, reg);
|
||
|
if (ret)
|
||
|
return ret;
|
||
|
}
|
||
|
|
||
|
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
static int palmas_ldo_init(struct palmas *palmas, int id,
|
||
|
struct palmas_reg_init *reg_init)
|
||
|
{
|
||
|
unsigned int reg;
|
||
|
unsigned int addr;
|
||
|
int ret;
|
||
|
|
||
|
addr = palmas_regs_info[id].ctrl_addr;
|
||
|
|
||
|
ret = palmas_smps_read(palmas, addr, ®);
|
||
|
if (ret)
|
||
|
return ret;
|
||
|
|
||
|
if (reg_init->warm_reset)
|
||
|
reg |= PALMAS_LDO1_CTRL_WR_S;
|
||
|
|
||
|
if (reg_init->mode_sleep)
|
||
|
reg |= PALMAS_LDO1_CTRL_MODE_SLEEP;
|
||
|
|
||
|
ret = palmas_smps_write(palmas, addr, reg);
|
||
|
if (ret)
|
||
|
return ret;
|
||
|
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
static __devinit int palmas_probe(struct platform_device *pdev)
|
||
|
{
|
||
|
struct palmas *palmas = dev_get_drvdata(pdev->dev.parent);
|
||
|
struct palmas_pmic_platform_data *pdata = pdev->dev.platform_data;
|
||
|
struct regulator_dev *rdev;
|
||
|
struct regulator_config config = { };
|
||
|
struct palmas_pmic *pmic;
|
||
|
struct palmas_reg_init *reg_init;
|
||
|
int id = 0, ret;
|
||
|
unsigned int addr, reg;
|
||
|
|
||
|
if (!pdata)
|
||
|
return -EINVAL;
|
||
|
if (!pdata->reg_data)
|
||
|
return -EINVAL;
|
||
|
|
||
|
pmic = devm_kzalloc(&pdev->dev, sizeof(*pmic), GFP_KERNEL);
|
||
|
if (!pmic)
|
||
|
return -ENOMEM;
|
||
|
|
||
|
pmic->dev = &pdev->dev;
|
||
|
pmic->palmas = palmas;
|
||
|
palmas->pmic = pmic;
|
||
|
platform_set_drvdata(pdev, pmic);
|
||
|
|
||
|
ret = palmas_smps_read(palmas, PALMAS_SMPS_CTRL, ®);
|
||
|
if (ret)
|
||
|
goto err_unregister_regulator;
|
||
|
|
||
|
if (reg & PALMAS_SMPS_CTRL_SMPS12_SMPS123_EN)
|
||
|
pmic->smps123 = 1;
|
||
|
|
||
|
if (reg & PALMAS_SMPS_CTRL_SMPS45_SMPS457_EN)
|
||
|
pmic->smps457 = 1;
|
||
|
|
||
|
config.regmap = palmas->regmap[REGULATOR_SLAVE];
|
||
|
config.dev = &pdev->dev;
|
||
|
config.driver_data = pmic;
|
||
|
|
||
|
for (id = 0; id < PALMAS_REG_LDO1; id++) {
|
||
|
|
||
|
/*
|
||
|
* Miss out regulators which are not available due
|
||
|
* to slaving configurations.
|
||
|
*/
|
||
|
switch (id) {
|
||
|
case PALMAS_REG_SMPS12:
|
||
|
case PALMAS_REG_SMPS3:
|
||
|
if (pmic->smps123)
|
||
|
continue;
|
||
|
break;
|
||
|
case PALMAS_REG_SMPS123:
|
||
|
if (!pmic->smps123)
|
||
|
continue;
|
||
|
break;
|
||
|
case PALMAS_REG_SMPS45:
|
||
|
case PALMAS_REG_SMPS7:
|
||
|
if (pmic->smps457)
|
||
|
continue;
|
||
|
break;
|
||
|
case PALMAS_REG_SMPS457:
|
||
|
if (!pmic->smps457)
|
||
|
continue;
|
||
|
}
|
||
|
|
||
|
/* Register the regulators */
|
||
|
pmic->desc[id].name = palmas_regs_info[id].name;
|
||
|
pmic->desc[id].id = id;
|
||
|
|
||
|
if (id != PALMAS_REG_SMPS10) {
|
||
|
pmic->desc[id].ops = &palmas_ops_smps;
|
||
|
pmic->desc[id].n_voltages = PALMAS_SMPS_NUM_VOLTAGES;
|
||
|
} else {
|
||
|
pmic->desc[id].n_voltages = PALMAS_SMPS10_NUM_VOLTAGES;
|
||
|
pmic->desc[id].ops = &palmas_ops_smps10;
|
||
|
pmic->desc[id].vsel_reg = PALMAS_SMPS10_CTRL;
|
||
|
pmic->desc[id].vsel_mask = SMPS10_VSEL;
|
||
|
pmic->desc[id].enable_reg = PALMAS_SMPS10_STATUS;
|
||
|
pmic->desc[id].enable_mask = SMPS10_BOOST_EN;
|
||
|
}
|
||
|
|
||
|
pmic->desc[id].type = REGULATOR_VOLTAGE;
|
||
|
pmic->desc[id].owner = THIS_MODULE;
|
||
|
|
||
|
/* Initialise sleep/init values from platform data */
|
||
|
if (pdata && pdata->reg_init) {
|
||
|
reg_init = pdata->reg_init[id];
|
||
|
if (reg_init) {
|
||
|
ret = palmas_smps_init(palmas, id, reg_init);
|
||
|
if (ret)
|
||
|
goto err_unregister_regulator;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
/*
|
||
|
* read and store the RANGE bit for later use
|
||
|
* This must be done before regulator is probed otherwise
|
||
|
* we error in probe with unsuportable ranges.
|
||
|
*/
|
||
|
if (id != PALMAS_REG_SMPS10) {
|
||
|
addr = palmas_regs_info[id].vsel_addr;
|
||
|
|
||
|
ret = palmas_smps_read(pmic->palmas, addr, ®);
|
||
|
if (ret)
|
||
|
goto err_unregister_regulator;
|
||
|
if (reg & PALMAS_SMPS12_VOLTAGE_RANGE)
|
||
|
pmic->range[id] = 1;
|
||
|
}
|
||
|
|
||
|
if (pdata && pdata->reg_data)
|
||
|
config.init_data = pdata->reg_data[id];
|
||
|
else
|
||
|
config.init_data = NULL;
|
||
|
|
||
|
rdev = regulator_register(&pmic->desc[id], &config);
|
||
|
if (IS_ERR(rdev)) {
|
||
|
dev_err(&pdev->dev,
|
||
|
"failed to register %s regulator\n",
|
||
|
pdev->name);
|
||
|
ret = PTR_ERR(rdev);
|
||
|
goto err_unregister_regulator;
|
||
|
}
|
||
|
|
||
|
/* Save regulator for cleanup */
|
||
|
pmic->rdev[id] = rdev;
|
||
|
}
|
||
|
|
||
|
/* Start this loop from the id left from previous loop */
|
||
|
for (; id < PALMAS_NUM_REGS; id++) {
|
||
|
|
||
|
/* Miss out regulators which are not available due
|
||
|
* to alternate functions.
|
||
|
*/
|
||
|
|
||
|
/* Register the regulators */
|
||
|
pmic->desc[id].name = palmas_regs_info[id].name;
|
||
|
pmic->desc[id].id = id;
|
||
|
pmic->desc[id].n_voltages = PALMAS_LDO_NUM_VOLTAGES;
|
||
|
|
||
|
pmic->desc[id].ops = &palmas_ops_ldo;
|
||
|
|
||
|
pmic->desc[id].type = REGULATOR_VOLTAGE;
|
||
|
pmic->desc[id].owner = THIS_MODULE;
|
||
|
pmic->desc[id].enable_reg = palmas_regs_info[id].ctrl_addr;
|
||
|
pmic->desc[id].enable_mask = PALMAS_LDO1_CTRL_MODE_ACTIVE;
|
||
|
|
||
|
if (pdata && pdata->reg_data)
|
||
|
config.init_data = pdata->reg_data[id];
|
||
|
else
|
||
|
config.init_data = NULL;
|
||
|
|
||
|
rdev = regulator_register(&pmic->desc[id], &config);
|
||
|
if (IS_ERR(rdev)) {
|
||
|
dev_err(&pdev->dev,
|
||
|
"failed to register %s regulator\n",
|
||
|
pdev->name);
|
||
|
ret = PTR_ERR(rdev);
|
||
|
goto err_unregister_regulator;
|
||
|
}
|
||
|
|
||
|
/* Save regulator for cleanup */
|
||
|
pmic->rdev[id] = rdev;
|
||
|
|
||
|
/* Initialise sleep/init values from platform data */
|
||
|
if (pdata->reg_init) {
|
||
|
reg_init = pdata->reg_init[id];
|
||
|
if (reg_init) {
|
||
|
ret = palmas_ldo_init(palmas, id, reg_init);
|
||
|
if (ret)
|
||
|
goto err_unregister_regulator;
|
||
|
}
|
||
|
}
|
||
|
}
|
||
|
|
||
|
return 0;
|
||
|
|
||
|
err_unregister_regulator:
|
||
|
while (--id >= 0)
|
||
|
regulator_unregister(pmic->rdev[id]);
|
||
|
return ret;
|
||
|
}
|
||
|
|
||
|
static int __devexit palmas_remove(struct platform_device *pdev)
|
||
|
{
|
||
|
struct palmas_pmic *pmic = platform_get_drvdata(pdev);
|
||
|
int id;
|
||
|
|
||
|
for (id = 0; id < PALMAS_NUM_REGS; id++)
|
||
|
regulator_unregister(pmic->rdev[id]);
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
static struct platform_driver palmas_driver = {
|
||
|
.driver = {
|
||
|
.name = "palmas-pmic",
|
||
|
.owner = THIS_MODULE,
|
||
|
},
|
||
|
.probe = palmas_probe,
|
||
|
.remove = __devexit_p(palmas_remove),
|
||
|
};
|
||
|
|
||
|
static int __init palmas_init(void)
|
||
|
{
|
||
|
return platform_driver_register(&palmas_driver);
|
||
|
}
|
||
|
subsys_initcall(palmas_init);
|
||
|
|
||
|
static void __exit palmas_exit(void)
|
||
|
{
|
||
|
platform_driver_unregister(&palmas_driver);
|
||
|
}
|
||
|
module_exit(palmas_exit);
|
||
|
|
||
|
MODULE_AUTHOR("Graeme Gregory <gg@slimlogic.co.uk>");
|
||
|
MODULE_DESCRIPTION("Palmas voltage regulator driver");
|
||
|
MODULE_LICENSE("GPL");
|
||
|
MODULE_ALIAS("platform:palmas-pmic");
|