Google Git
Sign in
android / kernel / tegra.git / 2ce2576c4a8fb4942cc3c75d4f81a32138a98f0e / . / drivers / regulator / palmas-regulator.c
blob: 8fec532171e41d5a749ccb6c41f33daaa64cab95 [file] [log] [blame]
/*
* Driver for Regulator part of Palmas PMIC Chips
*
* Copyright 2011-2013 Texas Instruments Inc.
* Copyright (c) 2013-2014, NVIDIA CORPORATION. All rights reserved.
*
* Author: Graeme Gregory <gg@slimlogic.co.uk>
* Author: Ian Lartey <ian@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/gpio.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_gpio.h>
#include <linux/of_platform.h>
#include <linux/regulator/of_regulator.h>
struct regs_info {
char *name;
char *sname;
u8 vsel_addr;
u8 ctrl_addr;
u8 tstep_addr;
u8 fvsel_addr;
u8 pd_cntrl_addr;
int sleep_id;
int pd_bit;
u8 pd_ctrl_addr;
int pd_ctrl_bits;
};
static const struct regs_info palmas_regs_info[] = {
{
.name = "SMPS12",
.sname = "smps1-in",
.vsel_addr = PALMAS_SMPS12_VOLTAGE,
.ctrl_addr = PALMAS_SMPS12_CTRL,
.tstep_addr = PALMAS_SMPS12_TSTEP,
.fvsel_addr = PALMAS_SMPS12_FORCE,
.sleep_id = PALMAS_EXTERNAL_REQSTR_ID_SMPS12,
.pd_cntrl_addr = PALMAS_SMPS_PD_CTRL,
.pd_bit = PALMAS_SMPS_PD_CTRL_SMPS12,
},
{
.name = "SMPS123",
.sname = "smps1-in",
.vsel_addr = PALMAS_SMPS12_VOLTAGE,
.ctrl_addr = PALMAS_SMPS12_CTRL,
.tstep_addr = PALMAS_SMPS12_TSTEP,
.sleep_id = PALMAS_EXTERNAL_REQSTR_ID_SMPS12,
.pd_cntrl_addr = PALMAS_SMPS_PD_CTRL,
.pd_bit = PALMAS_SMPS_PD_CTRL_SMPS12,
},
{
.name = "SMPS3",
.sname = "smps3-in",
.vsel_addr = PALMAS_SMPS3_VOLTAGE,
.ctrl_addr = PALMAS_SMPS3_CTRL,
.tstep_addr = PALMAS_SMPS3_TSTEP,
.fvsel_addr = PALMAS_SMPS3_FORCE,
.sleep_id = PALMAS_EXTERNAL_REQSTR_ID_SMPS3,
.pd_cntrl_addr = PALMAS_SMPS_PD_CTRL,
.pd_bit = PALMAS_SMPS_PD_CTRL_SMPS3,
},
{
.name = "SMPS45",
.sname = "smps4-in",
.vsel_addr = PALMAS_SMPS45_VOLTAGE,
.ctrl_addr = PALMAS_SMPS45_CTRL,
.tstep_addr = PALMAS_SMPS45_TSTEP,
.sleep_id = PALMAS_EXTERNAL_REQSTR_ID_SMPS45,
.pd_cntrl_addr = PALMAS_SMPS_PD_CTRL,
.pd_bit = PALMAS_SMPS_PD_CTRL_SMPS45,
},
{
.name = "SMPS457",
.sname = "smps4-in",
.vsel_addr = PALMAS_SMPS45_VOLTAGE,
.ctrl_addr = PALMAS_SMPS45_CTRL,
.tstep_addr = PALMAS_SMPS45_TSTEP,
.sleep_id = PALMAS_EXTERNAL_REQSTR_ID_SMPS45,
.pd_cntrl_addr = PALMAS_SMPS_PD_CTRL,
.pd_bit = PALMAS_SMPS_PD_CTRL_SMPS45,
},
{
.name = "SMPS6",
.sname = "smps6-in",
.vsel_addr = PALMAS_SMPS6_VOLTAGE,
.ctrl_addr = PALMAS_SMPS6_CTRL,
.tstep_addr = PALMAS_SMPS6_TSTEP,
.fvsel_addr = PALMAS_SMPS6_FORCE,
.sleep_id = PALMAS_EXTERNAL_REQSTR_ID_SMPS6,
.pd_cntrl_addr = PALMAS_SMPS_PD_CTRL,
.pd_bit = PALMAS_SMPS_PD_CTRL_SMPS6,
},
{
.name = "SMPS7",
.sname = "smps7-in",
.vsel_addr = PALMAS_SMPS7_VOLTAGE,
.ctrl_addr = PALMAS_SMPS7_CTRL,
.sleep_id = PALMAS_EXTERNAL_REQSTR_ID_SMPS7,
.pd_cntrl_addr = PALMAS_SMPS_PD_CTRL,
.pd_bit = PALMAS_SMPS_PD_CTRL_SMPS7,
},
{
.name = "SMPS8",
.sname = "smps8-in",
.vsel_addr = PALMAS_SMPS8_VOLTAGE,
.ctrl_addr = PALMAS_SMPS8_CTRL,
.tstep_addr = PALMAS_SMPS8_TSTEP,
.sleep_id = PALMAS_EXTERNAL_REQSTR_ID_SMPS8,
.pd_cntrl_addr = PALMAS_SMPS_PD_CTRL,
.pd_bit = PALMAS_SMPS_PD_CTRL_SMPS8,
},
{
.name = "SMPS9",
.sname = "smps9-in",
.vsel_addr = PALMAS_SMPS9_VOLTAGE,
.ctrl_addr = PALMAS_SMPS9_CTRL,
.sleep_id = PALMAS_EXTERNAL_REQSTR_ID_SMPS9,
.pd_cntrl_addr = PALMAS_SMPS_PD_CTRL,
.pd_bit = PALMAS_SMPS_PD_CTRL_SMPS9,
},
{
.name = "SMPS10_OUT2",
.sname = "smps10-in",
.ctrl_addr = PALMAS_SMPS10_CTRL,
.sleep_id = PALMAS_EXTERNAL_REQSTR_ID_SMPS10,
},
{
.name = "SMPS10_OUT1",
.sname = "smps10-out2",
.ctrl_addr = PALMAS_SMPS10_CTRL,
.sleep_id = PALMAS_EXTERNAL_REQSTR_ID_SMPS10,
},
{
.name = "LDO1",
.sname = "ldo1-in",
.vsel_addr = PALMAS_LDO1_VOLTAGE,
.ctrl_addr = PALMAS_LDO1_CTRL,
.sleep_id = PALMAS_EXTERNAL_REQSTR_ID_LDO1,
.pd_cntrl_addr = PALMAS_LDO_PD_CTRL1,
.pd_bit = PALMAS_LDO_PD_CTRL1_LDO1,
.pd_ctrl_addr = PALMAS_LDO_PD_CTRL1,
.pd_ctrl_bits = PALMAS_LDO_PD_CTRL1_LDO1,
},
{
.name = "LDO2",
.sname = "ldo2-in",
.vsel_addr = PALMAS_LDO2_VOLTAGE,
.ctrl_addr = PALMAS_LDO2_CTRL,
.sleep_id = PALMAS_EXTERNAL_REQSTR_ID_LDO2,
.pd_cntrl_addr = PALMAS_LDO_PD_CTRL1,
.pd_bit = PALMAS_LDO_PD_CTRL1_LDO2,
.pd_ctrl_addr = PALMAS_LDO_PD_CTRL1,
.pd_ctrl_bits = PALMAS_LDO_PD_CTRL1_LDO2,
},
{
.name = "LDO3",
.sname = "ldo3-in",
.vsel_addr = PALMAS_LDO3_VOLTAGE,
.ctrl_addr = PALMAS_LDO3_CTRL,
.sleep_id = PALMAS_EXTERNAL_REQSTR_ID_LDO3,
.pd_cntrl_addr = PALMAS_LDO_PD_CTRL1,
.pd_bit = PALMAS_LDO_PD_CTRL1_LDO3,
.pd_ctrl_addr = PALMAS_LDO_PD_CTRL1,
.pd_ctrl_bits = PALMAS_LDO_PD_CTRL1_LDO3,
},
{
.name = "LDO4",
.sname = "ldo4-in",
.vsel_addr = PALMAS_LDO4_VOLTAGE,
.ctrl_addr = PALMAS_LDO4_CTRL,
.sleep_id = PALMAS_EXTERNAL_REQSTR_ID_LDO4,
.pd_cntrl_addr = PALMAS_LDO_PD_CTRL1,
.pd_bit = PALMAS_LDO_PD_CTRL1_LDO4,
.pd_ctrl_addr = PALMAS_LDO_PD_CTRL1,
.pd_ctrl_bits = PALMAS_LDO_PD_CTRL1_LDO4,
},
{
.name = "LDO5",
.sname = "ldo5-in",
.vsel_addr = PALMAS_LDO5_VOLTAGE,
.ctrl_addr = PALMAS_LDO5_CTRL,
.sleep_id = PALMAS_EXTERNAL_REQSTR_ID_LDO5,
.pd_cntrl_addr = PALMAS_LDO_PD_CTRL1,
.pd_bit = PALMAS_LDO_PD_CTRL1_LDO5,
.pd_ctrl_addr = PALMAS_LDO_PD_CTRL1,
.pd_ctrl_bits = PALMAS_LDO_PD_CTRL1_LDO5,
},
{
.name = "LDO6",
.sname = "ldo6-in",
.vsel_addr = PALMAS_LDO6_VOLTAGE,
.ctrl_addr = PALMAS_LDO6_CTRL,
.sleep_id = PALMAS_EXTERNAL_REQSTR_ID_LDO6,
.pd_cntrl_addr = PALMAS_LDO_PD_CTRL1,
.pd_bit = PALMAS_LDO_PD_CTRL1_LDO6,
.pd_ctrl_addr = PALMAS_LDO_PD_CTRL1,
.pd_ctrl_bits = PALMAS_LDO_PD_CTRL1_LDO6,
},
{
.name = "LDO7",
.sname = "ldo7-in",
.vsel_addr = PALMAS_LDO7_VOLTAGE,
.ctrl_addr = PALMAS_LDO7_CTRL,
.sleep_id = PALMAS_EXTERNAL_REQSTR_ID_LDO7,
.pd_cntrl_addr = PALMAS_LDO_PD_CTRL1,
.pd_bit = PALMAS_LDO_PD_CTRL1_LDO7,
.pd_ctrl_addr = PALMAS_LDO_PD_CTRL1,
.pd_ctrl_bits = PALMAS_LDO_PD_CTRL1_LDO7,
},
{
.name = "LDO8",
.sname = "ldo8-in",
.vsel_addr = PALMAS_LDO8_VOLTAGE,
.ctrl_addr = PALMAS_LDO8_CTRL,
.sleep_id = PALMAS_EXTERNAL_REQSTR_ID_LDO8,
.pd_cntrl_addr = PALMAS_LDO_PD_CTRL1,
.pd_bit = PALMAS_LDO_PD_CTRL1_LDO8,
.pd_ctrl_addr = PALMAS_LDO_PD_CTRL1,
.pd_ctrl_bits = PALMAS_LDO_PD_CTRL1_LDO8,
},
{
.name = "LDO9",
.sname = "ldo9-in",
.vsel_addr = PALMAS_LDO9_VOLTAGE,
.ctrl_addr = PALMAS_LDO9_CTRL,
.sleep_id = PALMAS_EXTERNAL_REQSTR_ID_LDO9,
.pd_cntrl_addr = PALMAS_LDO_PD_CTRL2,
.pd_bit = PALMAS_LDO_PD_CTRL2_LDO9,
.pd_ctrl_addr = PALMAS_LDO_PD_CTRL2,
.pd_ctrl_bits = PALMAS_LDO_PD_CTRL2_LDO9,
},
{
.name = "LDO10",
.sname = "ldo10-in",
.vsel_addr = PALMAS_LDO10_VOLTAGE,
.ctrl_addr = PALMAS_LDO10_CTRL,
.sleep_id = PALMAS_EXTERNAL_REQSTR_ID_LDO10,
.pd_cntrl_addr = PALMAS_LDO_PD_CTRL2,
.pd_bit = PALMAS_LDO_PD_CTRL2_LDO10,
.pd_ctrl_addr = PALMAS_LDO_PD_CTRL2,
.pd_ctrl_bits = PALMAS_LDO_PD_CTRL2_LDO10,
},
{
.name = "LDO11",
.sname = "ldo11-in",
.vsel_addr = PALMAS_LDO11_VOLTAGE,
.ctrl_addr = PALMAS_LDO11_CTRL,
.sleep_id = PALMAS_EXTERNAL_REQSTR_ID_LDO11,
.pd_cntrl_addr = PALMAS_LDO_PD_CTRL2,
.pd_bit = PALMAS_LDO_PD_CTRL2_LDO11,
.pd_ctrl_addr = PALMAS_LDO_PD_CTRL2,
.pd_ctrl_bits = PALMAS_LDO_PD_CTRL2_LDO11,
},
{
.name = "LDO12",
.sname = "ldo12-in",
.vsel_addr = PALMAS_LDO12_VOLTAGE,
.ctrl_addr = PALMAS_LDO12_CTRL,
.sleep_id = PALMAS_EXTERNAL_REQSTR_ID_LDO12,
.pd_cntrl_addr = PALMAS_LDO_PD_CTRL2,
.pd_bit = PALMAS_LDO_PD_CTRL2_LDO12,
.pd_ctrl_addr = PALMAS_LDO_PD_CTRL2,
.pd_ctrl_bits = PALMAS_LDO_PD_CTRL2_LDO12,
},
{
.name = "LDO13",
.sname = "ldo13-in",
.vsel_addr = PALMAS_LDO13_VOLTAGE,
.ctrl_addr = PALMAS_LDO13_CTRL,
.sleep_id = PALMAS_EXTERNAL_REQSTR_ID_LDO13,
.pd_cntrl_addr = PALMAS_LDO_PD_CTRL2,
.pd_bit = PALMAS_LDO_PD_CTRL2_LDO13,
.pd_ctrl_addr = PALMAS_LDO_PD_CTRL2,
.pd_ctrl_bits = PALMAS_LDO_PD_CTRL2_LDO13,
},
{
.name = "LDO14",
.sname = "ldo14-in",
.vsel_addr = PALMAS_LDO14_VOLTAGE,
.ctrl_addr = PALMAS_LDO14_CTRL,
.sleep_id = PALMAS_EXTERNAL_REQSTR_ID_LDO14,
.pd_cntrl_addr = PALMAS_LDO_PD_CTRL2,
.pd_bit = PALMAS_LDO_PD_CTRL2_LDO14,
.pd_ctrl_addr = PALMAS_LDO_PD_CTRL2,
.pd_ctrl_bits = PALMAS_LDO_PD_CTRL2_LDO14,
},
{
.name = "LDOLN",
.sname = "ldoln-in",
.vsel_addr = PALMAS_LDOLN_VOLTAGE,
.ctrl_addr = PALMAS_LDOLN_CTRL,
.sleep_id = PALMAS_EXTERNAL_REQSTR_ID_LDOLN,
.pd_cntrl_addr = PALMAS_LDO_PD_CTRL2,
.pd_bit = PALMAS_LDO_PD_CTRL2_LDOLN,
.pd_ctrl_addr = PALMAS_LDO_PD_CTRL2,
.pd_ctrl_bits = PALMAS_LDO_PD_CTRL2_LDOLN,
},
{
.name = "LDOUSB",
.sname = "ldousb-in",
.vsel_addr = PALMAS_LDOUSB_VOLTAGE,
.ctrl_addr = PALMAS_LDOUSB_CTRL,
.sleep_id = PALMAS_EXTERNAL_REQSTR_ID_LDOUSB,
.pd_cntrl_addr = PALMAS_LDO_PD_CTRL2,
.pd_bit = PALMAS_LDO_PD_CTRL2_LDOUSB,
.pd_ctrl_addr = PALMAS_LDO_PD_CTRL2,
.pd_ctrl_bits = PALMAS_LDO_PD_CTRL2_LDOUSB,
},
{
.name = "REGEN1",
.ctrl_addr = PALMAS_REGEN1_CTRL,
.sleep_id = PALMAS_EXTERNAL_REQSTR_ID_REGEN1,
},
{
.name = "REGEN2",
.ctrl_addr = PALMAS_REGEN2_CTRL,
.sleep_id = PALMAS_EXTERNAL_REQSTR_ID_REGEN2,
},
{
.name = "REGEN3",
.ctrl_addr = PALMAS_REGEN3_CTRL,
.sleep_id = PALMAS_EXTERNAL_REQSTR_ID_REGEN3,
},
{
.name = "REGEN4",
.ctrl_addr = PALMAS_REGEN4_CTRL,
.sleep_id = PALMAS_EXTERNAL_REQSTR_ID_REGEN4,
},
{
.name = "REGEN5",
.ctrl_addr = PALMAS_REGEN5_CTRL,
.sleep_id = PALMAS_EXTERNAL_REQSTR_ID_REGEN5,
},
{
.name = "REGEN7",
.ctrl_addr = PALMAS_REGEN7_CTRL,
.sleep_id = PALMAS_EXTERNAL_REQSTR_ID_REGEN7,
},
{
.name = "SYSEN1",
.ctrl_addr = PALMAS_SYSEN1_CTRL,
.sleep_id = PALMAS_EXTERNAL_REQSTR_ID_SYSEN1,
},
{
.name = "SYSEN2",
.ctrl_addr = PALMAS_SYSEN2_CTRL,
.sleep_id = PALMAS_EXTERNAL_REQSTR_ID_SYSEN2,
},
{
.name = "CHARGERPUMP",
.ctrl_addr = PALMAS_CHARGE_PUMP_CTRL,
},
};
static unsigned int palmas_smps_ramp_delay[4] = {0, 10000, 5000, 2500};
#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 122
#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
/* Number of TAU for SMPS ramp delay.
* This can be adjusted between 2 or 3 according to the required accuracy.
* When TSTEP = 10mV/us, for N=3 output voltage settling error is less
* than 0.4 % of VFINAL in all conditions in the 0.5 V - 1.65 V range.
* For N=2, output voltage settling error is less than 1.1 % of VFINAL.
*/
#define NUM_T_AU 2
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 regmap_read(palmas->regmap[REGULATOR_SLAVE], addr, dest);
}
static int palmas_ldo_write(struct palmas *palmas, unsigned int reg,
unsigned int value)
{
unsigned int addr;
addr = PALMAS_BASE_TO_REG(PALMAS_LDO_BASE, reg);
return regmap_write(palmas->regmap[REGULATOR_SLAVE], addr, value);
}
static int palmas_is_enabled_smps(struct regulator_dev *dev)
{
struct palmas_pmic *pmic = rdev_get_drvdata(dev);
int id = rdev_get_id(dev);
unsigned int reg;
palmas_smps_read(pmic->palmas, palmas_regs_info[id].ctrl_addr, &reg);
reg &= PALMAS_SMPS12_CTRL_MODE_ACTIVE_MASK;
reg >>= PALMAS_SMPS12_CTRL_MODE_ACTIVE_SHIFT;
return !!(reg);
}
static int palmas_enable_smps(struct regulator_dev *dev)
{
struct palmas_pmic *pmic = rdev_get_drvdata(dev);
int id = rdev_get_id(dev);
unsigned int reg;
mutex_lock(&pmic->mutex);
if (pmic->shutdown) {
mutex_unlock(&pmic->mutex);
return -EINVAL;
}
palmas_smps_read(pmic->palmas, palmas_regs_info[id].ctrl_addr, &reg);
reg &= ~PALMAS_SMPS12_CTRL_MODE_ACTIVE_MASK;
if (pmic->current_reg_mode[id])
reg |= pmic->current_reg_mode[id];
else
reg |= SMPS_CTRL_MODE_ON;
palmas_smps_write(pmic->palmas, palmas_regs_info[id].ctrl_addr, reg);
mutex_unlock(&pmic->mutex);
return 0;
}
static int palmas_disable_smps(struct regulator_dev *dev)
{
struct palmas_pmic *pmic = rdev_get_drvdata(dev);
int id = rdev_get_id(dev);
unsigned int reg;
mutex_lock(&pmic->mutex);
if (pmic->shutdown) {
mutex_unlock(&pmic->mutex);
return -EINVAL;
}
palmas_smps_read(pmic->palmas, palmas_regs_info[id].ctrl_addr, &reg);
reg &= ~PALMAS_SMPS12_CTRL_MODE_ACTIVE_MASK;
palmas_smps_write(pmic->palmas, palmas_regs_info[id].ctrl_addr, reg);
mutex_unlock(&pmic->mutex);
return 0;
}
static int palmas_set_mode_smps(struct regulator_dev *dev, unsigned int mode)
{
struct palmas_pmic *pmic = rdev_get_drvdata(dev);
int id = rdev_get_id(dev);
unsigned int reg;
bool rail_enable = true;
palmas_smps_read(pmic->palmas, palmas_regs_info[id].ctrl_addr, &reg);
reg &= ~PALMAS_SMPS12_CTRL_MODE_ACTIVE_MASK;
if (reg == SMPS_CTRL_MODE_OFF)
rail_enable = false;
switch (mode) {
case REGULATOR_MODE_NORMAL:
reg |= SMPS_CTRL_MODE_ON;
break;
case REGULATOR_MODE_IDLE:
reg |= SMPS_CTRL_MODE_ECO;
break;
case REGULATOR_MODE_FAST:
reg |= SMPS_CTRL_MODE_PWM;
break;
default:
return -EINVAL;
}
pmic->current_reg_mode[id] = reg & PALMAS_SMPS12_CTRL_MODE_ACTIVE_MASK;
if (rail_enable)
palmas_smps_write(pmic->palmas,
palmas_regs_info[id].ctrl_addr, reg);
return 0;
}
static unsigned int palmas_get_mode_smps(struct regulator_dev *dev)
{
struct palmas_pmic *pmic = rdev_get_drvdata(dev);
int id = rdev_get_id(dev);
unsigned int reg;
reg = pmic->current_reg_mode[id] & PALMAS_SMPS12_CTRL_MODE_ACTIVE_MASK;
switch (reg) {
case SMPS_CTRL_MODE_ON:
return REGULATOR_MODE_NORMAL;
case SMPS_CTRL_MODE_ECO:
return REGULATOR_MODE_IDLE;
case SMPS_CTRL_MODE_PWM:
return REGULATOR_MODE_FAST;
}
return 0;
}
static int palmas_list_voltage_smps(struct regulator_dev *dev,
unsigned selector)
{
struct palmas_pmic *pmic = rdev_get_drvdata(dev);
int id = rdev_get_id(dev);
int mult = 1;
/* Read the multiplier set in VSEL register to return
* the correct voltage.
*/
if (pmic->range[id])
mult = 2;
if (selector == 0)
return 0;
else if (selector < 6)
return 500000 * mult;
else
/* Voltage is linear mapping starting from selector 6,
* volt = (0.49V + ((selector - 5) * 0.01V)) * RANGE
* RANGE is either x1 or x2
*/
return (490000 + ((selector - 5) * 10000)) * mult;
}
static int palmas_map_voltage_smps(struct regulator_dev *rdev,
int min_uV, int max_uV)
{
struct palmas_pmic *pmic = rdev_get_drvdata(rdev);
int id = rdev_get_id(rdev);
int ret, voltage;
if (min_uV == 0)
return 0;
if (pmic->range[id]) { /* RANGE is x2 */
if (min_uV < 1000000)
min_uV = 1000000;
ret = DIV_ROUND_UP(min_uV - 1000000, 20000) + 6;
} else { /* RANGE is x1 */
if (min_uV < 500000)
min_uV = 500000;
ret = DIV_ROUND_UP(min_uV - 500000, 10000) + 6;
}
/* Map back into a voltage to verify we're still in bounds */
voltage = palmas_list_voltage_smps(rdev, ret);
if (voltage < min_uV || voltage > max_uV)
return -EINVAL;
return ret;
}
static int palma_smps_set_voltage_smps_time_sel(struct regulator_dev *rdev,
unsigned int old_selector, unsigned int new_selector)
{
struct palmas_pmic *pmic = rdev_get_drvdata(rdev);
int id = rdev_get_id(rdev);
int old_uv, new_uv;
unsigned int ramp_delay = pmic->ramp_delay[id];
int num_steps;
int step = pmic->range[id] ? 20000 : 10000;
int min_uv = pmic->range[id] ? 1000000 : 500000;
int t_fixed, t_au, t_total;
if (!pmic->ramp_delay_support[id])
return 0;
/* ES2.1, have the 1.5X slower slew rate than configured */
if (palmas_is_es_version_or_less(pmic->palmas, 2, 1))
ramp_delay = (ramp_delay * 10)/15;
if (!ramp_delay)
return 0;
old_uv = palmas_list_voltage_smps(rdev, old_selector);
if (old_uv < 0)
return old_uv;
new_uv = palmas_list_voltage_smps(rdev, new_selector);
if (new_uv < 0)
return new_uv;
/* Number of DVS steps. */
num_steps = DIV_ROUND_UP(abs(old_uv - new_uv), step);
/* Fixed delay from DVS steps excluding the last one. */
t_fixed = (num_steps - 1) * (step / ramp_delay);
/* Time constant for last DVS step. */
t_au = DIV_ROUND_UP((112500 * (10 + (new_uv - min_uv) / 10000)),
1000000);
/* Total setting time is t_fixed + (NUM_T_AU * t_au). */
t_total = t_fixed + (NUM_T_AU * t_au);
return t_total;
}
static int palmas_smps_set_ramp_delay(struct regulator_dev *rdev,
int ramp_delay)
{
struct palmas_pmic *pmic = rdev_get_drvdata(rdev);
int id = rdev_get_id(rdev);
unsigned int reg = 0;
unsigned int addr = palmas_regs_info[id].tstep_addr;
int ret;
if (!pmic->ramp_delay_support[id])
return 0;
if (ramp_delay <= 0)
reg = 0;
else if (ramp_delay <= 2500)
reg = 3;
else if (ramp_delay <= 5000)
reg = 2;
else
reg = 1;
ret = palmas_smps_write(pmic->palmas, addr, reg);
if (ret < 0) {
dev_err(pmic->palmas->dev, "TSTEP write failed: %d\n", ret);
return ret;
}
pmic->ramp_delay[id] = palmas_smps_ramp_delay[reg];
dev_info(pmic->palmas->dev,
"Ramp delay of rail %s(id:%d) is %d uV/us\n",
palmas_regs_info[id].name, id, pmic->ramp_delay[id]);
return ret;
}
static struct regulator_ops palmas_ops_smps = {
.is_enabled = palmas_is_enabled_smps,
.enable = palmas_enable_smps,
.disable = palmas_disable_smps,
.set_mode = palmas_set_mode_smps,
.get_mode = palmas_get_mode_smps,
.get_voltage_sel = regulator_get_voltage_sel_regmap,
.set_voltage_sel = regulator_set_voltage_sel_regmap,
.list_voltage = palmas_list_voltage_smps,
.map_voltage = palmas_map_voltage_smps,
.set_voltage_time_sel = palma_smps_set_voltage_smps_time_sel,
.set_ramp_delay = palmas_smps_set_ramp_delay,
};
static struct regulator_ops palmas_ops_smps_extctrl = {
.set_mode = palmas_set_mode_smps,
.get_mode = palmas_get_mode_smps,
.get_voltage_sel = regulator_get_voltage_sel_regmap,
.set_voltage_sel = regulator_set_voltage_sel_regmap,
.list_voltage = palmas_list_voltage_smps,
.map_voltage = palmas_map_voltage_smps,
.set_voltage_time_sel = palma_smps_set_voltage_smps_time_sel,
.set_ramp_delay = palmas_smps_set_ramp_delay,
};
static struct regulator_ops palmas_ops_smps10 = {
.is_enabled = regulator_is_enabled_regmap,
.enable = regulator_enable_regmap,
.disable = regulator_disable_regmap,
.get_voltage_sel = regulator_get_voltage_sel_regmap,
.set_voltage_sel = regulator_set_voltage_sel_regmap,
.list_voltage = regulator_list_voltage_linear,
.map_voltage = regulator_map_voltage_linear,
.set_bypass = regulator_set_bypass_regmap,
.get_bypass = regulator_get_bypass_regmap,
};
static int palmas_list_voltage_ldo(struct regulator_dev *dev,
unsigned selector)
{
struct palmas_pmic *pmic = rdev_get_drvdata(dev);
int id = rdev_get_id(dev);
int volt;
volt = regulator_list_voltage_linear(dev, selector);
if (pmic->palmas->id == TPS80036) {
if (id == PALMAS_REG_LDO4 || id == PALMAS_REG_LDO5 ||
id == PALMAS_REG_LDO9)
if (pmic->ldo_vref0p425)
return volt / 2;
}
return volt;
}
static struct regulator_ops palmas_ops_ldo = {
.is_enabled = regulator_is_enabled_regmap,
.enable = regulator_enable_regmap,
.disable = regulator_disable_regmap,
.get_voltage_sel = regulator_get_voltage_sel_regmap,
.set_voltage_sel = regulator_set_voltage_sel_regmap,
.list_voltage = palmas_list_voltage_ldo,
};
static struct regulator_ops palmas_ops_ldo_extctrl = {
.get_voltage_sel = regulator_get_voltage_sel_regmap,
.set_voltage_sel = regulator_set_voltage_sel_regmap,
.list_voltage = palmas_list_voltage_ldo,
};
static struct regulator_ops palmas_ops_extreg = {
.is_enabled = regulator_is_enabled_regmap,
.enable = regulator_enable_regmap,
.disable = regulator_disable_regmap,
};
static struct regulator_ops palmas_ops_extreg_extctrl = {
};
static struct regulator_ops palmas_ops_chargepump = {
.is_enabled = regulator_is_enabled_regmap,
.enable = regulator_enable_regmap,
.disable = regulator_disable_regmap,
};
static int palmas_ldo5_tracking_init(struct palmas *palmas,
struct palmas_reg_init *reg_init, int id)
{
unsigned int reg;
int ret;
ret = palmas_ldo_read(palmas, PALMAS_LDO_CTRL, &reg);
if (ret < 0)
return ret;
reg = reg & ~PALMAS_LDO_CTRL_LDO5_BYPASS_SRC_SEL_MASK;
if (reg_init->config_flags & PALMAS_REGULATOR_CONFIG_TRACKING_ENABLE) {
if (reg_init->tracking_regulator == PALMAS_REG_SMPS12)
reg |= PALMAS_LDO_CTRL_LDO5_BYPASS_SRC_SEL_SMPS12;
else if (reg_init->tracking_regulator == PALMAS_REG_SMPS3)
reg |= PALMAS_LDO_CTRL_LDO5_BYPASS_SRC_SEL_SMPS3;
else if (reg_init->tracking_regulator == PALMAS_REG_SMPS6)
reg |= PALMAS_LDO_CTRL_LDO5_BYPASS_SRC_SEL_SMPS6;
}
ret = palmas_ldo_write(palmas, PALMAS_LDO_CTRL, reg);
if (ret < 0)
return ret;
if (reg_init->config_flags & PALMAS_REGULATOR_CONFIG_TRACKING_ENABLE) {
ret = palmas_update_bits(palmas, PALMAS_LDO_BASE,
palmas_regs_info[id].ctrl_addr,
PALMAS_LDO1_CTRL_MODE_ACTIVE, 0);
if (ret < 0) {
dev_err(palmas->dev,
"LDO Reg 0x%02x update failed: %d\n",
palmas_regs_info[id].ctrl_addr, ret);
return ret;
}
}
return 0;
}
static void palmas_enable_ldo8_track(struct palmas *palmas)
{
unsigned int reg = 0;
unsigned int addr;
int ret;
addr = palmas_regs_info[PALMAS_REG_LDO8].ctrl_addr;
ret = palmas_update_bits(palmas, PALMAS_LDO_BASE, addr,
PALMAS_LDO8_CTRL_LDO_TRACKING_EN,
PALMAS_LDO8_CTRL_LDO_TRACKING_EN);
if (ret < 0) {
dev_err(palmas->dev,
"LDO Reg 0x%02x update failed: %d\n", addr, ret);
return;
}
/*
* When SMPS45 is set to off and LDO8 tracking is enabled, the LDO8
* output is defined by the LDO8_VOLTAGE.VSEL register divided by two,
* and can be set from 0.45 to 1.65 V.
*/
addr = palmas_regs_info[PALMAS_REG_LDO8].vsel_addr;
ret = palmas_ldo_read(palmas, addr, &reg);
if (ret) {
dev_err(palmas->dev, "Error in reading ldo8 voltage reg\n");
return;
}
reg = (reg << 1) & PALMAS_LDO8_VOLTAGE_VSEL_MASK;
ret = palmas_ldo_write(palmas, addr, reg);
if (ret < 0) {
dev_err(palmas->dev, "Error in setting ldo8 voltage reg\n");
return;
}
/*
* Errata ES1.0, 2,0 and 2.1
* When Tracking is enbled, it need to disable Pull-Down for LDO8 and
* when tracking is disabled, SW has to enabe Pull-Down.
*/
if (palmas_is_es_version_or_less(palmas, 2, 1)) {
ret = palmas_update_bits(palmas, PALMAS_LDO_BASE,
PALMAS_LDO_PD_CTRL1, PALMAS_LDO_PD_CTRL1_LDO8, 0);
if (ret < 0) {
dev_err(palmas->dev,
"LDO_PD_CTRL1 update failed: %d\n", ret);
return;
}
}
palmas->pmic->desc[PALMAS_REG_LDO8].min_uV = 450000;
palmas->pmic->desc[PALMAS_REG_LDO8].uV_step = 25000;
return;
}
static void palmas_disable_ldo8_track(struct palmas *palmas)
{
unsigned int reg;
unsigned int addr;
int ret;
/*
* When SMPS4&5 is set to off and LDO8 tracking is enabled, the LDO8
* output is defined by the LDO8_VOLTAGE.VSEL register divided by two,
* and can be set from 0.45 to 1.65 V.
*/
addr = palmas_regs_info[PALMAS_REG_LDO8].vsel_addr;
ret = palmas_ldo_read(palmas, addr, &reg);
if (ret) {
dev_err(palmas->dev, "Error in reading ldo8 voltage reg\n");
return;
}
reg = (reg >> 1) & PALMAS_LDO8_VOLTAGE_VSEL_MASK;
ret = palmas_ldo_write(palmas, addr, reg);
if (ret < 0) {
dev_err(palmas->dev, "Error in setting ldo8 voltage reg\n");
return;
}
/* Disable the tracking mode */
addr = palmas_regs_info[PALMAS_REG_LDO8].ctrl_addr;
ret = palmas_update_bits(palmas, PALMAS_LDO_BASE, addr,
PALMAS_LDO8_CTRL_LDO_TRACKING_EN, 0);
if (ret < 0) {
dev_err(palmas->dev,
"LDO Reg 0x%02x update failed: %d\n", addr, ret);
return;
}
/*
* Errata ES1.0, 2,0 and 2.1
* When Tracking is enbled, it need to disable Pull-Down for LDO8 and
* when tracking is disabled, SW has to enabe Pull-Down.
*/
if (palmas_is_es_version_or_less(palmas, 2, 1)) {
ret = palmas_update_bits(palmas, PALMAS_LDO_BASE,
PALMAS_LDO_PD_CTRL1, PALMAS_LDO_PD_CTRL1_LDO8,
PALMAS_LDO_PD_CTRL1_LDO8);
if (ret < 0) {
dev_err(palmas->dev,
"LDO_PD_CTRL1 update failed: %d\n", ret);
return;
}
}
palmas->pmic->desc[PALMAS_REG_LDO8].min_uV = 900000;
palmas->pmic->desc[PALMAS_REG_LDO8].uV_step = 50000;
return;
}
static int palams_rail_pd_control(struct palmas *palmas, int id, bool disable)
{
unsigned int bit;
unsigned int base;
unsigned int addr;
unsigned int val;
int ret;
if (!palmas_regs_info[id].pd_cntrl_addr)
return 0;
base = (id < PALMAS_REG_LDO1) ? PALMAS_SMPS_BASE : PALMAS_LDO_BASE;
addr = palmas_regs_info[id].pd_cntrl_addr;
bit = palmas_regs_info[id].pd_bit;
val = (disable) ? 0 : bit;
ret = palmas_update_bits(palmas, PALMAS_SMPS_BASE, addr, bit, val);
if (ret < 0) {
dev_err(palmas->dev, "PD control config failed %d\n", ret);
return ret;
}
return 0;
}
/*
* 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 regulator_dev *rdev,
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, &reg);
if (ret)
return ret;
switch (id) {
case PALMAS_REG_SMPS10_OUT1:
case PALMAS_REG_SMPS10_OUT2:
reg &= ~PALMAS_SMPS10_CTRL_MODE_SLEEP_MASK;
if (reg_init->mode_sleep)
reg |= reg_init->mode_sleep <<
PALMAS_SMPS10_CTRL_MODE_SLEEP_SHIFT;
break;
default:
if (reg_init->warm_reset)
reg |= PALMAS_SMPS12_CTRL_WR_S;
else
reg &= ~PALMAS_SMPS12_CTRL_WR_S;
if (reg_init->roof_floor)
reg |= PALMAS_SMPS12_CTRL_ROOF_FLOOR_EN;
else
reg &= ~PALMAS_SMPS12_CTRL_ROOF_FLOOR_EN;
reg &= ~PALMAS_SMPS12_CTRL_MODE_SLEEP_MASK;
if (reg_init->mode_sleep)
reg |= reg_init->mode_sleep <<
PALMAS_SMPS12_CTRL_MODE_SLEEP_SHIFT;
break;
}
ret = palmas_smps_write(palmas, addr, reg);
if (ret)
return ret;
if ((id != PALMAS_REG_SMPS10_OUT1) &&
(id != PALMAS_REG_SMPS10_OUT2) &&
reg_init->roof_floor) {
int sleep_id = palmas_regs_info[id].sleep_id;
ret = palmas_enable_smps(rdev);
if (ret < 0) {
dev_err(palmas->dev, "SMPS enable failed %d\n", ret);
return ret;
}
ret = palmas_ext_power_req_config(palmas, sleep_id,
reg_init->roof_floor, true);
if (ret < 0) {
dev_err(palmas->dev,
"Error in configuring external control\n");
return ret;
}
if (id == PALMAS_REG_SMPS123) {
ret = palmas_ext_power_req_config(palmas,
PALMAS_EXTERNAL_REQSTR_ID_SMPS3,
reg_init->roof_floor, true);
if (ret < 0) {
dev_err(palmas->dev,
"Error in configuring ext control\n");
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;
}
palams_rail_pd_control(palmas, id,
reg_init->disable_active_discharge_idle);
return 0;
}
static int palmas_ldo_init(struct regulator_dev *rdev,
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_ldo_read(palmas, addr, &reg);
if (ret)
return ret;
if (reg_init->warm_reset)
reg |= PALMAS_LDO1_CTRL_WR_S;
else
reg &= ~PALMAS_LDO1_CTRL_WR_S;
if (reg_init->mode_sleep)
reg |= PALMAS_LDO1_CTRL_MODE_SLEEP;
else
reg &= ~PALMAS_LDO1_CTRL_MODE_SLEEP;
ret = palmas_ldo_write(palmas, addr, reg);
if (ret)
return ret;
if (reg_init->roof_floor) {
int sleep_id = palmas_regs_info[id].sleep_id;
/* Always enable if externally controlled */
ret = regulator_enable_regmap(rdev);
if (ret < 0) {
dev_err(palmas->dev,
"Error in enabling LOD regulator %d\n", id);
return ret;
}
ret = palmas_ext_power_req_config(palmas, sleep_id,
reg_init->roof_floor, true);
if (ret < 0) {
dev_err(palmas->dev,
"Error in configuring external control\n");
return ret;
}
}
palams_rail_pd_control(palmas, id,
reg_init->disable_active_discharge_idle);
if (reg_init->disable_pull_down) {
ret = palmas_update_bits(palmas, PALMAS_LDO_BASE,
palmas_regs_info[id].pd_ctrl_addr,
palmas_regs_info[id].pd_ctrl_bits, 0);
if (ret < 0) {
dev_err(palmas->dev,
"LDO_PD_CTRL 0x%02x update failed: %d\n",
palmas_regs_info[id].pd_ctrl_addr, ret);
return;
}
}
return 0;
}
static int palmas_ldo_tracking_init(struct palmas *palmas, int id,
struct palmas_reg_init *reg_init)
{
int ret;
if (!reg_init)
return 0;
switch (id) {
case PALMAS_REG_LDO5:
ret = palmas_ldo5_tracking_init(palmas, reg_init, id);
if (ret < 0) {
dev_err(palmas->dev,
"tracking mode init for rail %d failed: %d\n",
id, ret);
return ret;
}
break;
case PALMAS_REG_LDO8:
if (reg_init->config_flags &
PALMAS_REGULATOR_CONFIG_TRACKING_ENABLE)
palmas_enable_ldo8_track(palmas);
break;
default:
break;
}
return 0;
}
static int palmas_extreg_init(struct regulator_dev *rdev,
struct palmas *palmas, int id,
struct palmas_reg_init *reg_init)
{
unsigned int addr;
int ret;
unsigned int val = 0;
addr = palmas_regs_info[id].ctrl_addr;
if (reg_init->mode_sleep)
val = PALMAS_REGEN1_CTRL_MODE_SLEEP;
ret = palmas_update_bits(palmas, PALMAS_RESOURCE_BASE,
addr, PALMAS_REGEN1_CTRL_MODE_SLEEP, val);
if (ret < 0) {
dev_err(palmas->dev, "Resource reg 0x%02x update failed %d\n",
addr, ret);
return ret;
}
if (reg_init->roof_floor) {
int sleep_id = palmas_regs_info[id].sleep_id;
/* Always enable if externally controlled */
ret = regulator_enable_regmap(rdev);
if (ret < 0) {
dev_err(palmas->dev,
"Error in enabling regulator %d\n", id);
return ret;
}
ret = palmas_ext_power_req_config(palmas, sleep_id,
reg_init->roof_floor, true);
if (ret < 0) {
dev_err(palmas->dev,
"Error in configuring external control\n");
return ret;
}
}
return 0;
}
static ssize_t palmas_show_dvfs_data(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct palmas_pmic_platform_data *pdata = dev_get_platdata(dev);
struct palmas_dvfs_init_data *dvfs_idata = pdata->dvfs_init_data;
int data_size = pdata->dvfs_init_data_size;
int i;
int count = 0;
if (!dvfs_idata || !data_size)
return 0;
for (i = 0; i < data_size; i++) {
struct palmas_dvfs_init_data *dvfs_pd = &dvfs_idata[i];
if (!dvfs_pd->en_pwm)
continue;
count += sprintf(buf+count, "base_voltage:%d\n",
dvfs_pd->base_voltage_uV);
count += sprintf(buf+count, "step_size:%d\n",
dvfs_pd->step_20mV ? 20000 : 10000);
count += sprintf(buf+count, "max_voltage:%d\n",
dvfs_pd->max_voltage_uV);
}
return count;
}
static DEVICE_ATTR(dvfs_data, 0444, palmas_show_dvfs_data, NULL);
static void palmas_dvfs_init(struct palmas *palmas,
struct palmas_pmic_platform_data *pdata)
{
int slave;
struct palmas_dvfs_init_data *dvfs_idata = pdata->dvfs_init_data;
int data_size = pdata->dvfs_init_data_size;
unsigned int reg, addr;
int ret;
int sleep_id;
int i;
if (!dvfs_idata || !data_size)
return;
slave = PALMAS_BASE_TO_SLAVE(PALMAS_DVFS_BASE);
for (i = 0; i < data_size; i++) {
struct palmas_dvfs_init_data *dvfs_pd = &dvfs_idata[i];
sleep_id = palmas_regs_info[dvfs_pd->reg_id].sleep_id;
if (!dvfs_pd->en_pwm)
continue;
ret = palmas_ext_power_req_config(palmas, sleep_id,
dvfs_pd->ext_ctrl, true);
if (ret < 0) {
dev_err(palmas->dev,
"Error in configuring external control\n");
goto err;
}
addr = PALMAS_BASE_TO_REG(PALMAS_DVFS_BASE,
(PALMAS_SMPS_DVFS1_CTRL) + i*3);
reg = (1 << PALMAS_SMPS_DVFS1_ENABLE_SHIFT);
if (dvfs_pd->step_20mV)
reg |= (1 << PALMAS_SMPS_DVFS1_OFFSET_STEP_SHIFT);
/* only DVFS1_CTRL register contains smps select bit */
if (dvfs_pd->smps3_ctrl && (i == 0))
reg |= (1 << PALMAS_SMPS_DVFS1_SMPS_SELECT_SHIFT);
ret = regmap_write(palmas->regmap[slave], addr, reg);
if (ret)
goto err;
addr = PALMAS_BASE_TO_REG(PALMAS_DVFS_BASE,
(PALMAS_SMPS_DVFS1_VOLTAGE_MAX) + i*3);
if (!(dvfs_pd->max_voltage_uV >= DVFS_BASE_VOLTAGE_UV &&
dvfs_pd->max_voltage_uV <= DVFS_MAX_VOLTAGE_UV))
goto err;
reg = DIV_ROUND_UP((dvfs_pd->max_voltage_uV -
DVFS_BASE_VOLTAGE_UV), DVFS_VOLTAGE_STEP_UV) + 6;
ret = regmap_write(palmas->regmap[slave], addr, reg);
if (ret)
goto err;
addr = palmas_regs_info[dvfs_pd->reg_id].ctrl_addr;
ret = palmas_update_bits(palmas, PALMAS_SMPS_BASE, addr,
PALMAS_SMPS12_CTRL_ROOF_FLOOR_EN, 0);
if (ret)
goto err;
addr = palmas_regs_info[dvfs_pd->reg_id].fvsel_addr;
reg = (1 << PALMAS_SMPS12_FORCE_CMD_SHIFT);
reg |= DIV_ROUND_UP((dvfs_pd->base_voltage_uV -
DVFS_BASE_VOLTAGE_UV), DVFS_VOLTAGE_STEP_UV) + 6;
ret = palmas_smps_write(palmas, addr, reg);
if (ret)
goto err;
}
ret = device_create_file(palmas->pmic->dev, &dev_attr_dvfs_data);
if (ret)
dev_warn(palmas->pmic->dev,
"Can't register dvfs sysfs attribute\n");
ret = sysfs_create_link(kernel_kobj, &(palmas->pmic->dev->kobj),
"pmic");
if (ret)
dev_warn(palmas->pmic->dev, "Can't create sysfs link\n");
return;
err:
dev_err(palmas->dev, "Failed to initilize cl dvfs(%d)", i);
return;
}
static struct of_regulator_match palmas_matches[] = {
{ .name = "smps12", },
{ .name = "smps123", },
{ .name = "smps3", },
{ .name = "smps45", },
{ .name = "smps457", },
{ .name = "smps6", },
{ .name = "smps7", },
{ .name = "smps8", },
{ .name = "smps9", },
{ .name = "smps10_out2", },
{ .name = "smps10_out1", },
{ .name = "ldo1", },
{ .name = "ldo2", },
{ .name = "ldo3", },
{ .name = "ldo4", },
{ .name = "ldo5", },
{ .name = "ldo6", },
{ .name = "ldo7", },
{ .name = "ldo8", },
{ .name = "ldo9", },
{ .name = "ldo10", },
{ .name = "ldo11", },
{ .name = "ldo12", },
{ .name = "ldo13", },
{ .name = "ldo14", },
{ .name = "ldoln", },
{ .name = "ldousb", },
{ .name = "regen1", },
{ .name = "regen2", },
{ .name = "regen3", },
{ .name = "regen4", },
{ .name = "regen5", },
{ .name = "regen7", },
{ .name = "sysen1", },
{ .name = "sysen2", },
{ .name = "charger_pump", },
};
static void palmas_dt_to_pdata(struct device *dev,
struct device_node *node,
struct palmas_pmic_platform_data *pdata)
{
struct device_node *regulators;
u32 prop;
int idx, ret;
node = of_node_get(node);
regulators = of_find_node_by_name(node, "regulators");
if (!regulators) {
dev_info(dev, "regulator node not found\n");
return;
}
ret = of_regulator_match(dev, regulators, palmas_matches,
PALMAS_NUM_REGS);
of_node_put(regulators);
if (ret < 0) {
dev_err(dev, "Error parsing regulator init data: %d\n", ret);
return;
}
for (idx = 0; idx < PALMAS_NUM_REGS; idx++) {
if (!palmas_matches[idx].init_data ||
!palmas_matches[idx].of_node)
continue;
pdata->reg_data[idx] = palmas_matches[idx].init_data;
pdata->reg_init[idx] = devm_kzalloc(dev,
sizeof(struct palmas_reg_init), GFP_KERNEL);
pdata->reg_init[idx]->warm_reset =
of_property_read_bool(palmas_matches[idx].of_node,
"ti,warm-reset");
pdata->reg_init[idx]->disable_pull_down =
of_property_read_bool(palmas_matches[idx].of_node,
"ti,disable-pull-down");
ret = of_property_read_u32(palmas_matches[idx].of_node,
"ti,roof-floor", &prop);
/* EINVAL: Property not found */
if (ret != -EINVAL) {
int econtrol;
/* use default value, when no value is specified */
econtrol = PALMAS_EXT_CONTROL_NSLEEP;
if (!ret) {
switch (prop) {
case 1:
econtrol = PALMAS_EXT_CONTROL_ENABLE1;
break;
case 2:
econtrol = PALMAS_EXT_CONTROL_ENABLE2;
break;
case 3:
econtrol = PALMAS_EXT_CONTROL_NSLEEP;
break;
default:
WARN_ON(1);
dev_warn(dev,
"%s: Invalid roof-floor option: %u\n",
palmas_matches[idx].name, prop);
break;
}
}
pdata->reg_init[idx]->roof_floor = econtrol;
}
pdata->reg_init[idx]->enable_gpio = of_get_named_gpio(
palmas_matches[idx].of_node,
"ti,ext-enable-gpio", 0);
ret = of_property_read_u32(palmas_matches[idx].of_node,
"ti,mode-sleep", &prop);
if (!ret)
pdata->reg_init[idx]->mode_sleep = prop;
ret = of_property_read_bool(palmas_matches[idx].of_node,
"ti,smps-range");
if (ret)
pdata->reg_init[idx]->vsel =
PALMAS_SMPS12_VOLTAGE_RANGE;
if (idx == PALMAS_REG_LDO8) {
if (of_property_read_bool(palmas_matches[idx].of_node,
"ti,enable-ldo8-tracking")) {
pdata->reg_init[idx]->config_flags =
PALMAS_REGULATOR_CONFIG_TRACKING_ENABLE;
}
}
ret = of_property_read_u32(palmas_matches[idx].of_node,
"ti,config-flags", &prop);
if (!ret)
pdata->reg_init[idx]->config_flags = prop;
pdata->reg_init[idx]->disable_active_discharge_idle =
of_property_read_bool(
palmas_matches[idx].of_node,
"ti,disable-active-discharge-idle");
}
pdata->ldo6_vibrator = of_property_read_bool(node, "ti,ldo6-vibrator");
}
static int palmas_regulators_probe(struct platform_device *pdev)
{
struct palmas *palmas = dev_get_drvdata(pdev->dev.parent);
struct palmas_pmic_platform_data *pdata = dev_get_platdata(&pdev->dev);
struct device_node *node = pdev->dev.of_node;
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;
int roof_floor;
if (node && !pdata) {
pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
if (!pdata)
return -ENOMEM;
palmas_dt_to_pdata(&pdev->dev, node, pdata);
}
pmic = devm_kzalloc(&pdev->dev, sizeof(*pmic), GFP_KERNEL);
if (!pmic)
return -ENOMEM;
mutex_init(&pmic->mutex);
pmic->dev = &pdev->dev;
pmic->palmas = palmas;
palmas->pmic = pmic;
pmic->shutdown = false;
platform_set_drvdata(pdev, pmic);
/* Read VREF0P425 of LDO_CTRL register for TPS80036 */
if (palmas->id == TPS80036) {
ret = palmas_read(palmas, PALMAS_LDO_BASE,
PALMAS_LDO_CTRL, &reg);
if (ret)
goto err_unregister_regulator;
palmas->pmic->ldo_vref0p425 = (reg & PALMAS_LDO_CTRL_VREF_425)
? 1 : 0;
}
ret = palmas_smps_read(palmas, PALMAS_SMPS_CTRL, &reg);
if (ret)
return ret;
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++) {
bool ramp_delay_support = false;
reg_init = pdata->reg_init[id];
roof_floor = 0;
if (reg_init)
roof_floor = reg_init->roof_floor;
/*
* 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;
if (id == PALMAS_REG_SMPS12)
ramp_delay_support = true;
/* TPS80036 suports ramp delay on SMPS3 also */
if (palmas->id == TPS80036)
ramp_delay_support = true;
break;
case PALMAS_REG_SMPS123:
if (!pmic->smps123)
continue;
ramp_delay_support = true;
break;
case PALMAS_REG_SMPS45:
case PALMAS_REG_SMPS7:
if (pmic->smps457)
continue;
if (id == PALMAS_REG_SMPS45)
ramp_delay_support = true;
break;
case PALMAS_REG_SMPS457:
if (!pmic->smps457)
continue;
ramp_delay_support = true;
break;
}
if ((id == PALMAS_REG_SMPS6) || (id == PALMAS_REG_SMPS8))
ramp_delay_support = true;
pmic->ramp_delay_support[id] = ramp_delay_support;
if (ramp_delay_support) {
addr = palmas_regs_info[id].tstep_addr;
ret = palmas_smps_read(pmic->palmas, addr, &reg);
if (ret < 0) {
dev_err(&pdev->dev,
"reading TSTEP reg failed: %d\n", ret);
goto err_unregister_regulator;
}
pmic->desc[id].ramp_delay =
palmas_smps_ramp_delay[reg & 0x3];
pmic->ramp_delay[id] = pmic->desc[id].ramp_delay;
}
/* Register the regulators */
pmic->desc[id].name = palmas_regs_info[id].name;
pmic->desc[id].id = id;
switch (id) {
case PALMAS_REG_SMPS10_OUT1:
case PALMAS_REG_SMPS10_OUT2:
pmic->desc[id].n_voltages = PALMAS_SMPS10_NUM_VOLTAGES;
pmic->desc[id].ops = &palmas_ops_smps10;
pmic->desc[id].vsel_reg =
PALMAS_BASE_TO_REG(PALMAS_SMPS_BASE,
PALMAS_SMPS10_CTRL);
pmic->desc[id].vsel_mask = SMPS10_VSEL;
pmic->desc[id].enable_reg =
PALMAS_BASE_TO_REG(PALMAS_SMPS_BASE,
PALMAS_SMPS10_CTRL);
if (id == PALMAS_REG_SMPS10_OUT1)
pmic->desc[id].enable_mask = SMPS10_SWITCH_EN;
else
pmic->desc[id].enable_mask = SMPS10_BOOST_EN;
pmic->desc[id].bypass_reg =
PALMAS_BASE_TO_REG(PALMAS_SMPS_BASE,
PALMAS_SMPS10_CTRL);
pmic->desc[id].bypass_mask = SMPS10_BYPASS_EN;
pmic->desc[id].min_uV = 3750000;
pmic->desc[id].uV_step = 1250000;
break;
default:
/*
* Read and store the RANGE bit for later use
* This must be done before regulator is probed,
* otherwise we error in probe with unsupportable
* ranges. Read the current smps mode for later use.
*/
addr = palmas_regs_info[id].vsel_addr;
ret = palmas_smps_read(pmic->palmas, addr, &reg);
if (ret)
goto err_unregister_regulator;
if (reg & PALMAS_SMPS12_VOLTAGE_RANGE)
pmic->range[id] = 1;
if (roof_floor)
pmic->desc[id].ops = &palmas_ops_smps_extctrl;
else
pmic->desc[id].ops = &palmas_ops_smps;
pmic->desc[id].n_voltages = PALMAS_SMPS_NUM_VOLTAGES;
pmic->desc[id].vsel_reg =
PALMAS_BASE_TO_REG(PALMAS_SMPS_BASE,
palmas_regs_info[id].vsel_addr);
pmic->desc[id].vsel_mask =
PALMAS_SMPS12_VOLTAGE_VSEL_MASK;
/* Read the smps mode for later use. */
addr = palmas_regs_info[id].ctrl_addr;
ret = palmas_smps_read(pmic->palmas, addr, &reg);
if (ret)
goto err_unregister_regulator;
pmic->current_reg_mode[id] = reg &
PALMAS_SMPS12_CTRL_MODE_ACTIVE_MASK;
pmic->desc[id].enable_time = 600;
break;
}
pmic->desc[id].type = REGULATOR_VOLTAGE;
pmic->desc[id].owner = THIS_MODULE;
pmic->desc[id].supply_name = palmas_regs_info[id].sname;
if (pdata)
config.init_data = pdata->reg_data[id];
else
config.init_data = NULL;
pmic->desc[id].supply_name = palmas_regs_info[id].sname;
config.of_node = palmas_matches[id].of_node;
if (roof_floor) {
config.ena_gpio = reg_init->enable_gpio;
config.ena_gpio_flags = GPIOF_OUT_INIT_HIGH;
} else {
config.ena_gpio = -EINVAL;
config.ena_gpio_flags = 0;
}
if (reg_init && (reg_init->config_flags &
PALMAS_REGULATOR_CONFIG_VSEL_VOLATILE)) {
unsigned int bit = palmas_regs_info[id].vsel_addr;
__set_bit(bit, palmas->volatile_smps_registers);
pmic->desc[id].vsel_persist = true;
pmic->desc[id].vsel_persist_val = pmic->range[id] ?
PALMAS_SMPS12_VOLTAGE_RANGE : 0;
}
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 (reg_init) {
pmic->config_flags[id] = reg_init->config_flags;
pmic->disable_active_discharge_idle[id] =
reg_init->disable_active_discharge_idle;
ret = palmas_smps_init(rdev, palmas, id, reg_init);
if (ret)
goto err_unregister_regulator;
}
}
/* Start this loop from the id left from previous loop */
for (; id < PALMAS_NUM_REGS; id++) {
if (palmas->id != TPS80036) {
if (id > PALMAS_REG_LDO9 && id < PALMAS_REG_LDOLN)
continue;
if (id > PALMAS_REG_REGEN3 && id < PALMAS_REG_SYSEN1)
continue;
if (id == PALMAS_REG_CHARGER_PUMP)
continue;
} else {
if (id == PALMAS_REG_REGEN3)
continue;
}
reg_init = pdata->reg_init[id];
roof_floor = 0;
if (reg_init)
roof_floor = reg_init->roof_floor;
/* 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].type = REGULATOR_VOLTAGE;
pmic->desc[id].owner = THIS_MODULE;
pmic->desc[id].supply_name = palmas_regs_info[id].sname;
if (id < PALMAS_REG_REGEN1) {
pmic->desc[id].n_voltages = PALMAS_LDO_NUM_VOLTAGES;
if (roof_floor)
pmic->desc[id].ops = &palmas_ops_ldo_extctrl;
else
pmic->desc[id].ops = &palmas_ops_ldo;
pmic->desc[id].min_uV = 900000;
pmic->desc[id].uV_step = 50000;
pmic->desc[id].linear_min_sel = 1;
pmic->desc[id].vsel_reg =
PALMAS_BASE_TO_REG(PALMAS_LDO_BASE,
palmas_regs_info[id].vsel_addr);
pmic->desc[id].vsel_mask =
PALMAS_LDO1_VOLTAGE_VSEL_MASK;
pmic->desc[id].enable_reg =
PALMAS_BASE_TO_REG(PALMAS_LDO_BASE,
palmas_regs_info[id].ctrl_addr);
pmic->desc[id].enable_mask =
PALMAS_LDO1_CTRL_MODE_ACTIVE;
pmic->desc[id].enable_time = 500;
/* Check if LDO8 is in tracking mode or not */
if (pdata && (id == PALMAS_REG_LDO8) &&
(pdata->reg_init[id]->config_flags &
PALMAS_REGULATOR_CONFIG_TRACKING_ENABLE)) {
pmic->desc[id].min_uV = 450000;
pmic->desc[id].uV_step = 25000;
}
ret = palmas_ldo_tracking_init(palmas, id, reg_init);
if (ret < 0) {
dev_err(&pdev->dev,
"Track config of rail %d failed %d\n",
id, ret);
goto err_unregister_regulator;
}
} else if (id == PALMAS_REG_CHARGER_PUMP) {
pmic->desc[id].enable_reg =
palmas_regs_info[id].ctrl_addr;
pmic->desc[id].enable_mask =
PALMAS_CHARGE_PUMP_CTRL_MODE_ACTIVE;
pmic->desc[id].ops = &palmas_ops_chargepump;
pmic->desc[id].fixed_uV = 5000 * 1000;
} else {
pmic->desc[id].n_voltages = 1;
if (roof_floor)
pmic->desc[id].ops = &palmas_ops_extreg_extctrl;
else
pmic->desc[id].ops = &palmas_ops_extreg;
pmic->desc[id].enable_reg =
PALMAS_BASE_TO_REG(PALMAS_RESOURCE_BASE,
palmas_regs_info[id].ctrl_addr);
pmic->desc[id].enable_mask =
PALMAS_REGEN1_CTRL_MODE_ACTIVE;
pmic->desc[id].fixed_uV = 4300 * 1000;
}
if (pdata)
config.init_data = pdata->reg_data[id];
else
config.init_data = NULL;
pmic->desc[id].supply_name = palmas_regs_info[id].sname;
config.of_node = palmas_matches[id].of_node;
if (roof_floor) {
config.ena_gpio = reg_init->enable_gpio;
config.ena_gpio_flags = GPIOF_OUT_INIT_HIGH;
} else {
config.ena_gpio = -EINVAL;
config.ena_gpio_flags = 0;
}
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 && (id != PALMAS_REG_CHARGER_PUMP)) {
pmic->config_flags[id] = reg_init->config_flags;
pmic->disable_active_discharge_idle[id] =
reg_init->disable_active_discharge_idle;
if (id < PALMAS_REG_REGEN1)
ret = palmas_ldo_init(rdev, palmas, id,
reg_init);
else
ret = palmas_extreg_init(rdev, palmas,
id, reg_init);
if (ret) {
regulator_unregister(pmic->rdev[id]);
goto err_unregister_regulator;
}
}
}
palmas_dvfs_init(palmas, pdata);
return 0;
err_unregister_regulator:
while (--id >= 0)
regulator_unregister(pmic->rdev[id]);
return ret;
}
static int palmas_regulators_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 void palams_regulators_shutdown(struct platform_device *pdev)
{
struct palmas *palmas = dev_get_drvdata(pdev->dev.parent);
int id;
mutex_lock(&palmas->pmic->mutex);
for (id = 0; id < PALMAS_NUM_REGS; id++)
palams_rail_pd_control(palmas, id, false);
palmas->pmic->shutdown = true;
mutex_unlock(&palmas->pmic->mutex);
}
static struct of_device_id of_palmas_match_tbl[] = {
{ .compatible = "ti,palmas-pmic", },
{ .compatible = "ti,twl6035-pmic", },
{ .compatible = "ti,twl6036-pmic", },
{ .compatible = "ti,twl6037-pmic", },
{ .compatible = "ti,tps65913-pmic", },
{ .compatible = "ti,tps65914-pmic", },
{ .compatible = "ti,tps80036-pmic", },
{ .compatible = "ti,tps659038-pmic", },
{ /* end */ }
};
#ifdef CONFIG_PM_SLEEP
static int palmas_suspend(struct device *dev)
{
struct palmas *palmas = dev_get_drvdata(dev->parent);
struct palmas_pmic *pmic = dev_get_drvdata(dev);
int id;
for (id = 0; id < PALMAS_NUM_REGS; id++) {
unsigned int cf = pmic->config_flags[id];
if ((cf & PALMAS_REGULATOR_CONFIG_SUSPEND_TRACKING_DISABLE) &&
(cf & PALMAS_REGULATOR_CONFIG_TRACKING_ENABLE)) {
if (id == PALMAS_REG_LDO8)
palmas_disable_ldo8_track(palmas);
}
if (pmic->config_flags[id] &
PALMAS_REGULATOR_CONFIG_SUSPEND_FORCE_OFF) {
if (pmic->desc[id].ops->disable)
pmic->desc[id].ops->disable(pmic->rdev[id]);
}
palams_rail_pd_control(palmas, id, false);
}
return 0;
}
static int palmas_resume(struct device *dev)
{
struct palmas *palmas = dev_get_drvdata(dev->parent);
struct palmas_pmic *pmic = dev_get_drvdata(dev);
int id;
for (id = 0; id < PALMAS_NUM_REGS; id++) {
unsigned int cf = pmic->config_flags[id];
if ((cf & PALMAS_REGULATOR_CONFIG_SUSPEND_TRACKING_DISABLE) &&
(cf & PALMAS_REGULATOR_CONFIG_TRACKING_ENABLE)) {
if (id == PALMAS_REG_LDO8)
palmas_enable_ldo8_track(palmas);
}
if (pmic->config_flags[id] &
PALMAS_REGULATOR_CONFIG_SUSPEND_FORCE_OFF) {
if (pmic->desc[id].ops->enable)
pmic->desc[id].ops->enable(pmic->rdev[id]);
}
palams_rail_pd_control(palmas, id,
pmic->disable_active_discharge_idle[id]);
}
return 0;
}
#endif
static const struct dev_pm_ops palmas_pm_ops = {
SET_SYSTEM_SLEEP_PM_OPS(palmas_suspend, palmas_resume)
};
static struct platform_driver palmas_driver = {
.driver = {
.name = "palmas-pmic",
.of_match_table = of_palmas_match_tbl,
.owner = THIS_MODULE,
.pm = &palmas_pm_ops,
},
.probe = palmas_regulators_probe,
.remove = palmas_regulators_remove,
.shutdown = palams_regulators_shutdown,
};
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");
MODULE_DEVICE_TABLE(of, of_palmas_match_tbl);