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kernel_samsung_a53x/drivers/regulator/s2mpm07_regulator.c
Gabriel2392 7ed7ee9edf Import A536BXXU9EXDC
2024-06-15 16:02:09 -03:00

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/*
* s2mpm07.c
*
* Copyright (c) 2021 Samsung Electronics Co., Ltd
* http://www.samsung.com
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*
*/
#include <linux/bug.h>
#include <linux/delay.h>
#include <linux/err.h>
#include <linux/gpio.h>
#include <linux/of_gpio.h>
#include <../drivers/pinctrl/samsung/pinctrl-samsung.h>
#include <linux/slab.h>
#include <linux/module.h>
#include <linux/regmap.h>
#include <linux/platform_device.h>
#include <linux/regulator/driver.h>
#include <linux/regulator/machine.h>
#include <linux/regulator/of_regulator.h>
#include <linux/mfd/samsung/s2mpm07.h>
#include <linux/mfd/samsung/s2mpm07-regulator.h>
//#include <linux/reset/exynos-reset.h>
#include <linux/io.h>
#include <linux/mutex.h>
#include <linux/interrupt.h>
#include <linux/regulator/pmic_class.h>
#if IS_ENABLED(CONFIG_EXYNOS_ACPM)
#include <soc/samsung/acpm_mfd.h>
#define RF_CHANNEL 2
static struct device_node *acpm_mfd_node;
#endif
#define I2C_BASE_VGPIO 0x00
#define I2C_BASE_COMMON 0x03
#define I2C_BASE_PM1 0x05
#define I2C_BASE_CLOSE1 0x0E
#define I2C_BASE_ADC 0x0A
#define I2C_BASE_GPIO 0x0B
static struct s2mpm07_info *s2mpm07_static_info;
struct s2mpm07_info {
struct regulator_dev *rdev[S2MPM07_REGULATOR_MAX];
unsigned int opmode[S2MPM07_REGULATOR_MAX];
struct s2mpm07_dev *iodev;
struct mutex lock;
struct i2c_client *i2c;
int num_regulators;
#if IS_ENABLED(CONFIG_DRV_SAMSUNG_PMIC)
uint8_t base_addr;
uint8_t read_addr;
uint8_t read_val;
struct device *dev;
#endif
};
static unsigned int s2mpm07_of_map_mode(unsigned int val) {
switch (val) {
case SEC_OPMODE_SUSPEND: /* ON in Standby Mode */
return 0x1;
case SEC_OPMODE_MIF: /* ON in PWREN_MIF mode */
return 0x2;
case SEC_OPMODE_ON: /* ON in Normal Mode */
return 0x3;
default:
return REGULATOR_MODE_INVALID;
}
}
/* Some LDOs supports [LPM/Normal]ON mode during suspend state */
static int s2m_set_mode(struct regulator_dev *rdev,
unsigned int mode)
{
struct s2mpm07_info *s2mpm07 = rdev_get_drvdata(rdev);
unsigned int val;
int id = rdev_get_id(rdev);
val = mode << S2MPM07_ENABLE_SHIFT;
s2mpm07->opmode[id] = val;
return 0;
}
static int s2m_enable(struct regulator_dev *rdev)
{
struct s2mpm07_info *s2mpm07 = rdev_get_drvdata(rdev);
return s2mpm07_update_reg(s2mpm07->i2c, rdev->desc->enable_reg,
s2mpm07->opmode[rdev_get_id(rdev)],
rdev->desc->enable_mask);
}
static int s2m_disable_regmap(struct regulator_dev *rdev)
{
struct s2mpm07_info *s2mpm07 = rdev_get_drvdata(rdev);
unsigned int val;
if (rdev->desc->enable_is_inverted)
val = rdev->desc->enable_mask;
else
val = 0;
return s2mpm07_update_reg(s2mpm07->i2c, rdev->desc->enable_reg,
val, rdev->desc->enable_mask);
}
static int s2m_is_enabled_regmap(struct regulator_dev *rdev)
{
struct s2mpm07_info *s2mpm07 = rdev_get_drvdata(rdev);
int ret;
uint8_t val;
ret = s2mpm07_read_reg(s2mpm07->i2c,
rdev->desc->enable_reg, &val);
if (ret)
return ret;
if (rdev->desc->enable_is_inverted)
return (val & rdev->desc->enable_mask) == 0;
else
return (val & rdev->desc->enable_mask) != 0;
}
static int get_ramp_delay(int ramp_delay)
{
unsigned char cnt = 0;
ramp_delay /= 6;
while (true) {
ramp_delay = ramp_delay >> 1;
if (ramp_delay == 0)
break;
cnt++;
}
return cnt;
}
static int s2m_set_ramp_delay(struct regulator_dev *rdev, int ramp_delay)
{
struct s2mpm07_info *s2mpm07 = rdev_get_drvdata(rdev);
int reg_id = rdev_get_id(rdev);
unsigned int ramp_value = 0;
uint8_t ramp_addr = 0;
ramp_value = get_ramp_delay(ramp_delay / 1000);
if (ramp_value > 4) {
pr_warn("%s: ramp_delay: %d not supported\n",
rdev->desc->name, ramp_delay);
}
ramp_value = 0x00; // 6.25mv/us fixed
if (s2mpm07->iodev->pmic_rev != 0x29) {
switch (reg_id) {
case S2MPM07_BUCK1:
ramp_addr = S2MPM07_REG_BUCK1R_DVS;
break;
//case S2MPM07_BUCK_SR1:
// ramp_addr = S2MPM07_REG_BUCK_SR1R_DVS;
// break;
default:
return -EINVAL;
}
} else {
switch (reg_id) {
case S2MPM07_BUCK1_EVT0:
ramp_addr = S2MPM07_REG_BUCK1R_DVS;
break;
//case S2MPM07_BUCK_SR1_EVT0:
// ramp_addr = S2MPM07_REG_BUCK_SR1R_DVS;
// break;
default:
return -EINVAL;
}
}
return s2mpm07_update_reg(s2mpm07->i2c, ramp_addr,
ramp_value << BUCK_RAMP_UP_SHIFT,
BUCK_RAMP_MASK << BUCK_RAMP_UP_SHIFT);
}
static int s2m_get_voltage_sel_regmap(struct regulator_dev *rdev)
{
struct s2mpm07_info *s2mpm07 = rdev_get_drvdata(rdev);
int ret;
uint8_t val;
ret = s2mpm07_read_reg(s2mpm07->i2c, rdev->desc->vsel_reg, &val);
if (ret)
return ret;
val &= rdev->desc->vsel_mask;
return val;
}
static int s2m_set_voltage_sel_regmap(struct regulator_dev *rdev, unsigned sel)
{
struct s2mpm07_info *s2mpm07 = rdev_get_drvdata(rdev);
int ret;
ret = s2mpm07_update_reg(s2mpm07->i2c, rdev->desc->vsel_reg,
sel, rdev->desc->vsel_mask);
if (ret < 0) {
pr_warn("%s: failed to set voltage_sel_regmap\n", rdev->desc->name);
return -EINVAL;
}
if (rdev->desc->apply_bit)
ret = s2mpm07_update_reg(s2mpm07->i2c, rdev->desc->apply_reg,
rdev->desc->apply_bit,
rdev->desc->apply_bit);
return ret;
}
static int s2m_set_voltage_sel_regmap_buck(struct regulator_dev *rdev, unsigned sel)
{
struct s2mpm07_info *s2mpm07 = rdev_get_drvdata(rdev);
int ret = 0;
ret = s2mpm07_write_reg(s2mpm07->i2c, rdev->desc->vsel_reg, sel);
if (ret < 0) {
pr_warn("%s: failed to set voltage_sel_regmap\n", rdev->desc->name);
return -EINVAL;
}
if (rdev->desc->apply_bit)
ret = s2mpm07_update_reg(s2mpm07->i2c, rdev->desc->apply_reg,
rdev->desc->apply_bit,
rdev->desc->apply_bit);
return ret;
}
static int s2m_set_voltage_time_sel(struct regulator_dev *rdev,
unsigned int old_selector,
unsigned int new_selector)
{
unsigned int ramp_delay = 0;
int old_volt, new_volt;
if (rdev->constraints->ramp_delay)
ramp_delay = rdev->constraints->ramp_delay;
else if (rdev->desc->ramp_delay)
ramp_delay = rdev->desc->ramp_delay;
if (ramp_delay == 0) {
pr_warn("%s: ramp_delay not set\n", rdev->desc->name);
return -EINVAL;
}
/* sanity check */
if (!rdev->desc->ops->list_voltage)
return -EINVAL;
old_volt = rdev->desc->ops->list_voltage(rdev, old_selector);
new_volt = rdev->desc->ops->list_voltage(rdev, new_selector);
if (old_selector < new_selector)
return DIV_ROUND_UP(new_volt - old_volt, ramp_delay);
else
return DIV_ROUND_UP(old_volt - new_volt, ramp_delay);
return 0;
}
static struct regulator_ops s2mpm07_ldo_ops = {
.list_voltage = regulator_list_voltage_linear,
.map_voltage = regulator_map_voltage_linear,
.is_enabled = s2m_is_enabled_regmap,
.enable = s2m_enable,
.disable = s2m_disable_regmap,
.get_voltage_sel = s2m_get_voltage_sel_regmap,
.set_voltage_sel = s2m_set_voltage_sel_regmap,
.set_voltage_time_sel = s2m_set_voltage_time_sel,
.set_mode = s2m_set_mode,
};
static struct regulator_ops s2mpm07_buck_ops = {
.list_voltage = regulator_list_voltage_linear,
.map_voltage = regulator_map_voltage_linear,
.is_enabled = s2m_is_enabled_regmap,
.enable = s2m_enable,
.disable = s2m_disable_regmap,
.get_voltage_sel = s2m_get_voltage_sel_regmap,
.set_voltage_sel = s2m_set_voltage_sel_regmap_buck,
.set_voltage_time_sel = s2m_set_voltage_time_sel,
.set_mode = s2m_set_mode,
.set_ramp_delay = s2m_set_ramp_delay,
};
#if 0
static struct regulator_ops s2mpm07_bb_ops = {
.list_voltage = regulator_list_voltage_linear,
.map_voltage = regulator_map_voltage_linear,
.is_enabled = s2m_is_enabled_regmap,
.enable = s2m_enable,
.disable = s2m_disable_regmap,
.get_voltage_sel = s2m_get_voltage_sel_regmap,
.set_voltage_sel = s2m_set_voltage_sel_regmap,
.set_voltage_time_sel = s2m_set_voltage_time_sel,
.set_mode = s2m_set_mode,
};
#endif
#define _BUCK(macro) S2MPM07_BUCK##macro
#define _buck_ops(num) s2mpm07_buck_ops##num
#define _LDO(macro) S2MPM07_LDO##macro
#define _ldo_ops(num) s2mpm07_ldo_ops##num
#define _BB(macro) S2MPM07_BB##macro
#define _bb_ops(num) s2mpm07_bb_ops##num
#define _REG(ctrl) S2MPM07_REG##ctrl
#define _TIME(macro) S2MPM07_ENABLE_TIME##macro
#define _LDO_MIN(group) S2MPM07_LDO_MIN##group
#define _LDO_STEP(group) S2MPM07_LDO_STEP##group
#define _LDO_MASK(num) S2MPM07_LDO_VSEL_MASK##num
#define _BUCK_MIN(group) S2MPM07_BUCK_MIN##group
#define _BUCK_STEP(group) S2MPM07_BUCK_STEP##group
#define _BB_MIN(group) S2MPM07_BB_MIN##group
#define _BB_STEP(group) S2MPM07_BB_STEP##group
#define BUCK_DESC(_name, _id, _ops, g, v, e, t) { \
.name = _name, \
.id = _id, \
.ops = _ops, \
.type = REGULATOR_VOLTAGE, \
.owner = THIS_MODULE, \
.min_uV = _BUCK_MIN(g), \
.uV_step = _BUCK_STEP(g), \
.n_voltages = S2MPM07_BUCK_N_VOLTAGES, \
.vsel_reg = v, \
.vsel_mask = S2MPM07_BUCK_VSEL_MASK, \
.enable_reg = e, \
.enable_mask = S2MPM07_ENABLE_MASK, \
.enable_time = t, \
.of_map_mode = s2mpm07_of_map_mode \
}
#define LDO_DESC(_name, _id, _ops, g, v, v_m, e, t) { \
.name = _name, \
.id = _id, \
.ops = _ops, \
.type = REGULATOR_VOLTAGE, \
.owner = THIS_MODULE, \
.min_uV = _LDO_MIN(g), \
.uV_step = _LDO_STEP(g), \
.n_voltages = _LDO_MASK(v_m) + 1, \
.vsel_reg = v, \
.vsel_mask = _LDO_MASK(v_m), \
.enable_reg = e, \
.enable_mask = S2MPM07_ENABLE_MASK, \
.enable_time = t, \
.of_map_mode = s2mpm07_of_map_mode \
}
#if 0
#define BB_DESC(_name, _id, _ops, g, v, e, t) { \
.name = _name, \
.id = _id, \
.ops = _ops, \
.type = REGULATOR_VOLTAGE, \
.owner = THIS_MODULE, \
.min_uV = _BB_MIN(), \
.uV_step = _BB_STEP(), \
.n_voltages = S2MPM07_BB_N_VOLTAGES, \
.vsel_reg = v, \
.vsel_mask = S2MPM07_BB_VSEL_MASK, \
.enable_reg = e, \
.enable_mask = S2MPM07_ENABLE_MASK, \
.enable_time = t, \
.of_map_mode = s2mpm07_of_map_mode \
}
#endif
/* EVT0 */
static struct regulator_desc regulators_evt0[S2MPM07_REG_MAX_EVT0] = {
/* name, id, ops, group, vsel_reg, vsel_mask, enable_reg, ramp_delay */
// LDO 1R ~ 23R
//LDO_DESC("LDO1", _LDO(1_EVT0), &_ldo_ops(), 1, _REG(_LDO1R_OUT), 1, _REG(_LDO1R_CTRL), _TIME(_LDO)),
//LDO_DESC("LDO2", _LDO(2_EVT0), &_ldo_ops(), 1, _REG(_LDO2R_OUT1), 1, _REG(_LDO2R_CTRL), _TIME(_LDO)),
//LDO_DESC("LDO3", _LDO(3_EVT0), &_ldo_ops(), 2, _REG(_LDO3R_OUT), 1, _REG(_LDO3R_CTRL), _TIME(_LDO)),
//LDO_DESC("LDO4", _LDO(4_EVT0), &_ldo_ops(), 1, _REG(_LDO4R_OUT), 1, _REG(_LDO4R_CTRL), _TIME(_LDO)),
//LDO_DESC("LDO5", _LDO(5_EVT0), &_ldo_ops(), 1, _REG(_LDO5R_OUT), 1, _REG(_LDO5R_CTRL), _TIME(_LDO)),
//LDO_DESC("LDO6", _LDO(6_EVT0), &_ldo_ops(), 2, _REG(_LDO6R_CTRL), 2, _REG(_LDO6R_CTRL), _TIME(_LDO)),
//LDO_DESC("LDO7", _LDO(7_EVT0), &_ldo_ops(), 1, _REG(_LDO7R_OUT), 1, _REG(_LDO7R_CTRL), _TIME(_LDO)),
//LDO_DESC("LDO8", _LDO(8_EVT0), &_ldo_ops(), 1, _REG(_LDO8R_OUT), 1, _REG(_LDO8R_CTRL), _TIME(_LDO)),
//LDO_DESC("LDO9", _LDO(9_EVT0), &_ldo_ops(), 1, _REG(_LDO9R_OUT), 1, _REG(_LDO9R_CTRL), _TIME(_LDO)),
//LDO_DESC("LDO10", _LDO(10_EVT0), &_ldo_ops(), 2, _REG(_LDO10R_CTRL), 2, _REG(_LDO10R_CTRL), _TIME(_LDO)),
LDO_DESC("LDO11", _LDO(11_EVT0), &_ldo_ops(), 3, _REG(_LDO11R_CTRL), 2, _REG(_LDO11R_CTRL), _TIME(_LDO)),
//LDO_DESC("LDO12", _LDO(12_EVT0), &_ldo_ops(), 1, _REG(_LDO12R_OUT), 1, _REG(_LDO12R_CTRL), _TIME(_LDO)),
//LDO_DESC("LDO13", _LDO(13_EVT0), &_ldo_ops(), 1, _REG(_LDO13R_OUT), 1, _REG(_LDO13R_CTRL), _TIME(_LDO)),
//LDO_DESC("LDO14", _LDO(14_EVT0), &_ldo_ops(), 1, _REG(_LDO14R_OUT), 1, _REG(_LDO14R_CTRL), _TIME(_LDO)),
//LDO_DESC("LDO15", _LDO(15_EVT0), &_ldo_ops(), 1, _REG(_LDO15R_OUT), 1, _REG(_LDO15R_CTRL), _TIME(_LDO)),
//LDO_DESC("LDO16", _LDO(16_EVT0), &_ldo_ops(), 2, _REG(_LDO16R_CTRL), 2, _REG(_LDO16R_CTRL), _TIME(_LDO)),
//LDO_DESC("LDO17", _LDO(17_EVT0), &_ldo_ops(), 2, _REG(_LDO17R_CTRL), 2, _REG(_LDO17R_CTRL), _TIME(_LDO)),
LDO_DESC("LDO18", _LDO(18_EVT0), &_ldo_ops(), 3, _REG(_LDO18R_CTRL), 2, _REG(_LDO18R_CTRL), _TIME(_LDO)),
LDO_DESC("LDO19", _LDO(19_EVT0), &_ldo_ops(), 3, _REG(_LDO19R_CTRL), 2, _REG(_LDO19R_CTRL), _TIME(_LDO)),
//LDO_DESC("LDO20", _LDO(20_EVT0), &_ldo_ops(), 3, _REG(_LDO20R_CTRL), 2, _REG(_LDO20R_CTRL), _TIME(_LDO)),
//LDO_DESC("LDO21", _LDO(21_EVT0), &_ldo_ops(), 3, _REG(_LDO21R_CTRL), 2, _REG(_LDO21R_CTRL), _TIME(_LDO)),
//LDO_DESC("LDO22", _LDO(22_EVT0), &_ldo_ops(), 3, _REG(_LDO22R_CTRL), 2, _REG(_LDO22R_CTRL), _TIME(_LDO)),
//LDO_DESC("LDO23", _LDO(23_EVT0), &_ldo_ops(), 3, _REG(_LDO23R_CTRL), 2, _REG(_LDO23R_CTRL), _TIME(_LDO)),
// BUCK 1R, SR1R
BUCK_DESC("BUCK1", _BUCK(1_EVT0), &_buck_ops(), 1, _REG(_BUCK1R_OUT1), _REG(_BUCK1R_CTRL), _TIME(_BUCK)),
//BUCK_DESC("BUCK_SR1", _BUCK(_SR1_EVT0), &_buck_ops(), 2, _REG(_BUCK_SR1R_OUT1), _REG(_BUCK_SR1R_CTRL), _TIME(_BUCK_SR)),
};
static struct regulator_desc regulators[S2MPM07_REG_MAX] = {
/* name, id, ops, group, vsel_reg, vsel_mask, enable_reg, ramp_delay */
// LDO 1R ~ 21R
//LDO_DESC("LDO1", _LDO(1), &_ldo_ops(), 1, _REG(_LDO1R_OUT), 1, _REG(_LDO1R_CTRL), _TIME(_LDO)),
//LDO_DESC("LDO2", _LDO(2), &_ldo_ops(), 1, _REG(_LDO2R_OUT1), 1, _REG(_LDO2R_CTRL), _TIME(_LDO)),
//LDO_DESC("LDO3", _LDO(3), &_ldo_ops(), 2, _REG(_LDO3R_OUT), 1, _REG(_LDO3R_CTRL), _TIME(_LDO)),
//LDO_DESC("LDO4", _LDO(4), &_ldo_ops(), 1, _REG(_LDO4R_OUT), 1, _REG(_LDO4R_CTRL), _TIME(_LDO)),
//LDO_DESC("LDO5", _LDO(5), &_ldo_ops(), 1, _REG(_LDO5R_OUT), 1, _REG(_LDO5R_CTRL), _TIME(_LDO)),
//LDO_DESC("LDO6", _LDO(6), &_ldo_ops(), 2, _REG(_LDO6R_CTRL), 2, _REG(_LDO6R_CTRL), _TIME(_LDO)),
//LDO_DESC("LDO7", _LDO(7), &_ldo_ops(), 1, _REG(_LDO7R_OUT), 1, _REG(_LDO7R_CTRL), _TIME(_LDO)),
//LDO_DESC("LDO8", _LDO(8), &_ldo_ops(), 1, _REG(_LDO8R_OUT), 1, _REG(_LDO8R_CTRL), _TIME(_LDO)),
//LDO_DESC("LDO9", _LDO(9), &_ldo_ops(), 1, _REG(_LDO9R_OUT), 1, _REG(_LDO9R_CTRL), _TIME(_LDO)),
//LDO_DESC("LDO10", _LDO(10), &_ldo_ops(), 2, _REG(_LDO10R_CTRL), 2, _REG(_LDO10R_CTRL), _TIME(_LDO)),
LDO_DESC("LDO11", _LDO(11), &_ldo_ops(), 3, _REG(_LDO11R_CTRL), 2, _REG(_LDO11R_CTRL), _TIME(_LDO)),
//LDO_DESC("LDO12", _LDO(12), &_ldo_ops(), 1, _REG(_LDO12R_OUT), 1, _REG(_LDO12R_CTRL), _TIME(_LDO)),
//LDO_DESC("LDO13", _LDO(13), &_ldo_ops(), 1, _REG(_LDO13R_OUT), 1, _REG(_LDO13R_CTRL), _TIME(_LDO)),
//LDO_DESC("LDO14", _LDO(14), &_ldo_ops(), 1, _REG(_LDO14R_OUT), 1, _REG(_LDO14R_CTRL), _TIME(_LDO)),
//LDO_DESC("LDO15", _LDO(15), &_ldo_ops(), 1, _REG(_LDO15R_OUT), 1, _REG(_LDO15R_CTRL), _TIME(_LDO)),
//LDO_DESC("LDO16", _LDO(16), &_ldo_ops(), 2, _REG(_LDO16R_CTRL), 2, _REG(_LDO16R_CTRL), _TIME(_LDO)),
//LDO_DESC("LDO17", _LDO(17), &_ldo_ops(), 2, _REG(_LDO17R_CTRL), 2, _REG(_LDO17R_CTRL), _TIME(_LDO)),
LDO_DESC("LDO18", _LDO(18), &_ldo_ops(), 3, _REG(_LDO18R_CTRL), 2, _REG(_LDO18R_CTRL), _TIME(_LDO)),
LDO_DESC("LDO19", _LDO(19), &_ldo_ops(), 3, _REG(_LDO19R_CTRL), 2, _REG(_LDO19R_CTRL), _TIME(_LDO)),
//LDO_DESC("LDO20", _LDO(20), &_ldo_ops(), 3, _REG(_LDO20R_CTRL), 2, _REG(_LDO20R_CTRL), _TIME(_LDO)),
//LDO_DESC("LDO21", _LDO(21), &_ldo_ops(), 3, _REG(_LDO21R_CTRL), 2, _REG(_LDO21R_CTRL), _TIME(_LDO)),
// BUCK 1R, SR1R
BUCK_DESC("BUCK1", _BUCK(1), &_buck_ops(), 1, _REG(_BUCK1R_OUT1), _REG(_BUCK1R_CTRL), _TIME(_BUCK)),
//BUCK_DESC("BUCK_SR1", _BUCK(_SR1), &_buck_ops(), 2, _REG(_BUCK_SR1R_OUT1), _REG(_BUCK_SR1R_CTRL), _TIME(_BUCK_SR)),
};
#if IS_ENABLED(CONFIG_OF)
static int s2mpm07_pmic_dt_parse_pdata(struct s2mpm07_dev *iodev,
struct s2mpm07_platform_data *pdata)
{
struct device_node *pmic_np, *regulators_np, *reg_np;
struct s2mpm07_regulator_data *rdata;
uint32_t i;
pmic_np = iodev->dev->of_node;
if (!pmic_np) {
dev_err(iodev->dev, "could not find pmic sub-node\n");
return -ENODEV;
}
#if IS_ENABLED(CONFIG_EXYNOS_ACPM)
acpm_mfd_node = pmic_np;
#endif
regulators_np = of_find_node_by_name(pmic_np, "regulators");
if (!regulators_np) {
dev_err(iodev->dev, "could not find regulators sub-node\n");
return -EINVAL;
}
/* count the number of regulators to be supported in pmic */
pdata->num_regulators = 0;
for_each_child_of_node(regulators_np, reg_np) {
pdata->num_regulators++;
}
rdata = devm_kzalloc(iodev->dev, sizeof(*rdata) * pdata->num_regulators, GFP_KERNEL);
if (!rdata)
return -ENOMEM;
pdata->regulators = rdata;
pdata->num_rdata = 0;
for_each_child_of_node(regulators_np, reg_np) {
if (iodev->pmic_rev != 0x29) {
for (i = 0; i < ARRAY_SIZE(regulators); i++)
if (!of_node_cmp(reg_np->name, regulators[i].name))
break;
if (i == ARRAY_SIZE(regulators)) {
dev_warn(iodev->dev,
"[RF_PMIC] %s: don't know how to configure regulator %s\n",
__func__, reg_np->name);
continue;
}
rdata->id = i;
rdata->initdata = of_get_regulator_init_data(iodev->dev, reg_np, &regulators[i]);
rdata->reg_node = reg_np;
rdata++;
pdata->num_rdata++;
} else {
for (i = 0; i < ARRAY_SIZE(regulators_evt0); i++)
if (!of_node_cmp(reg_np->name, regulators_evt0[i].name))
break;
if (i == ARRAY_SIZE(regulators_evt0)) {
dev_warn(iodev->dev,
"[RF_PMIC] %s: don't know how to configure regulator %s\n",
__func__, reg_np->name);
continue;
}
rdata->id = i;
rdata->initdata = of_get_regulator_init_data(iodev->dev, reg_np, &regulators_evt0[i]);
rdata->reg_node = reg_np;
rdata++;
pdata->num_rdata++;
}
}
return 0;
}
#else
static int s2mpm07_pmic_dt_parse_pdata(struct s2mpm07_pmic_dev *iodev,
struct s2mpm07_platform_data *pdata)
{
return 0;
}
#endif /* CONFIG_OF */
#if IS_ENABLED(CONFIG_DRV_SAMSUNG_PMIC)
static ssize_t s2mpm07_read_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t size)
{
struct s2mpm07_info *s2mpm07 = dev_get_drvdata(dev);
int ret;
uint8_t base_addr = 0, reg_addr = 0, val = 0;
#if IS_ENABLED(CONFIG_EXYNOS_ACPM)
struct s2mpm07_dev *iodev = s2mpm07->iodev;
#endif
if (buf == NULL) {
pr_info("%s: empty buffer\n", __func__);
return -1;
}
ret = sscanf(buf, "0x%02hhx%02hhx", &base_addr, &reg_addr);
if (ret != 2) {
pr_err("%s: input error\n", __func__);
return size;
}
#if IS_ENABLED(CONFIG_EXYNOS_ACPM)
mutex_lock(&iodev->i2c_lock);
ret = exynos_acpm_read_reg(acpm_mfd_node, RF_CHANNEL, base_addr, reg_addr, &val);
mutex_unlock(&iodev->i2c_lock);
if (ret)
pr_info("%s: fail to read i2c addr/data\n", __func__);
#endif
pr_info("%s: reg(0x%02hhx%02hhx) data(0x%02hhx)\n", __func__,
base_addr, reg_addr, val);
s2mpm07->base_addr = base_addr;
s2mpm07->read_addr = reg_addr;
s2mpm07->read_val = val;
return size;
}
static ssize_t s2mpm07_read_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct s2mpm07_info *s2mpm07 = dev_get_drvdata(dev);
return sprintf(buf, "0x%02hhx%02hhx: 0x%02hhx\n",
s2mpm07->base_addr, s2mpm07->read_addr, s2mpm07->read_val);
}
static ssize_t s2mpm07_write_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t size)
{
struct s2mpm07_info *s2mpm07 = dev_get_drvdata(dev);
int ret;
uint8_t base_addr = 0, reg_addr = 0, data = 0;
#if IS_ENABLED(CONFIG_EXYNOS_ACPM)
struct s2mpm07_dev *iodev = s2mpm07->iodev;
#endif
if (buf == NULL) {
pr_info("%s: empty buffer\n", __func__);
return size;
}
ret = sscanf(buf, "0x%02hhx%02hhx 0x%02hhx", &base_addr, &reg_addr, &data);
if (ret != 3) {
pr_err("%s: input error\n", __func__);
return size;
}
switch (base_addr) {
case I2C_BASE_VGPIO:
case I2C_BASE_COMMON:
case I2C_BASE_PM1:
case I2C_BASE_ADC:
case I2C_BASE_CLOSE1:
case I2C_BASE_GPIO:
break;
default:
pr_err("%s: base address error(0x%02hhx)\n", __func__, base_addr);
return size;
}
pr_info("%s: reg(0x%02hhx%02hhx) data(0x%02hhx)\n", __func__,
base_addr, reg_addr, data);
#if IS_ENABLED(CONFIG_EXYNOS_ACPM)
mutex_lock(&iodev->i2c_lock);
ret = exynos_acpm_write_reg(acpm_mfd_node, RF_CHANNEL, base_addr, reg_addr, data);
mutex_unlock(&iodev->i2c_lock);
if (ret)
pr_info("%s: fail to write i2c addr/data\n", __func__);
#endif
return size;
}
static ssize_t s2mpm07_write_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
return sprintf(buf, "echo (register addr.) (data) > s2mpm07_write\n");
}
static struct pmic_device_attribute regulator_attr[] = {
PMIC_ATTR(s2mpm07_write, S_IRUGO | S_IWUSR, s2mpm07_write_show, s2mpm07_write_store),
PMIC_ATTR(s2mpm07_read, S_IRUGO | S_IWUSR, s2mpm07_read_show, s2mpm07_read_store),
};
static int s2mpm07_create_sysfs(struct s2mpm07_info *s2mpm07)
{
struct device *s2mpm07_pmic = s2mpm07->dev;
struct device *dev = s2mpm07->iodev->dev;
char device_name[32] = {0, };
int err = -ENODEV, i = 0;
pr_info("%s()\n", __func__);
s2mpm07->base_addr = 0;
s2mpm07->read_addr = 0;
s2mpm07->read_val = 0;
/* Dynamic allocation for device name */
snprintf(device_name, sizeof(device_name) - 1, "%s@%s",
dev_driver_string(dev), dev_name(dev));
s2mpm07_pmic = pmic_device_create(s2mpm07, device_name);
s2mpm07->dev = s2mpm07_pmic;
/* Create sysfs entries */
for (i = 0; i < ARRAY_SIZE(regulator_attr); i++) {
err = device_create_file(s2mpm07_pmic, &regulator_attr[i].dev_attr);
if (err)
goto remove_pmic_device;
}
return 0;
remove_pmic_device:
for (i--; i >= 0; i--)
device_remove_file(s2mpm07_pmic, &regulator_attr[i].dev_attr);
pmic_device_destroy(s2mpm07_pmic->devt);
return -1;
}
#endif
static int s2mpm07_pmic_probe(struct platform_device *pdev)
{
struct s2mpm07_dev *iodev = dev_get_drvdata(pdev->dev.parent);
struct s2mpm07_platform_data *pdata = iodev->pdata;
struct regulator_config config = { };
struct s2mpm07_info *s2mpm07;
int ret;
uint32_t i;
pr_info("[RF_PMIC] %s: start\n", __func__);
if (iodev->dev->of_node) {
ret = s2mpm07_pmic_dt_parse_pdata(iodev, pdata);
if (ret)
goto err_pdata;
}
if (!pdata) {
dev_err(pdev->dev.parent, "Platform data not supplied\n");
return -ENODEV;
}
s2mpm07 = devm_kzalloc(&pdev->dev, sizeof(struct s2mpm07_info), GFP_KERNEL);
if (!s2mpm07)
return -ENOMEM;
s2mpm07->iodev = iodev;
s2mpm07->i2c = iodev->pmic1;
mutex_init(&s2mpm07->lock);
s2mpm07_static_info = s2mpm07;
platform_set_drvdata(pdev, s2mpm07);
config.dev = &pdev->dev;
config.driver_data = s2mpm07;
for (i = 0; i < pdata->num_rdata; i++) {
int id = pdata->regulators[i].id;
config.init_data = pdata->regulators[i].initdata;
config.of_node = pdata->regulators[i].reg_node;
if (iodev->pmic_rev != 0x29) {
s2mpm07->opmode[id] = regulators[id].enable_mask;
s2mpm07->rdev[i] = devm_regulator_register(&pdev->dev,
&regulators[id], &config);
} else {
s2mpm07->opmode[id] = regulators_evt0[id].enable_mask;
s2mpm07->rdev[i] = devm_regulator_register(&pdev->dev,
&regulators_evt0[id], &config);
}
if (IS_ERR(s2mpm07->rdev[i])) {
ret = PTR_ERR(s2mpm07->rdev[i]);
dev_err(&pdev->dev, "[RF_PMIC] regulator init failed for %s(%d)\n",
regulators[i].name, i);
goto err_s2mpm07_data;
}
}
s2mpm07->num_regulators = pdata->num_rdata;
#if IS_ENABLED(CONFIG_DRV_SAMSUNG_PMIC)
ret = s2mpm07_create_sysfs(s2mpm07);
if (ret < 0) {
pr_err("%s: s2mpm07_create_sysfs fail\n", __func__);
goto err_s2mpm07_data;
}
#endif
pr_info("[RF_PMIC] %s: end\n", __func__);
return 0;
err_s2mpm07_data:
mutex_destroy(&s2mpm07->lock);
err_pdata:
return ret;
}
static int s2mpm07_pmic_remove(struct platform_device *pdev)
{
struct s2mpm07_info *s2mpm07 = platform_get_drvdata(pdev);
#if IS_ENABLED(CONFIG_DRV_SAMSUNG_PMIC)
struct device *s2mpm07_pmic = s2mpm07->dev;
int i = 0;
/* Remove sysfs entries */
for (i = 0; i < ARRAY_SIZE(regulator_attr); i++)
device_remove_file(s2mpm07_pmic, &regulator_attr[i].dev_attr);
pmic_device_destroy(s2mpm07_pmic->devt);
#endif
mutex_destroy(&s2mpm07->lock);
return 0;
}
static void s2mpm07_pmic_shutdown(struct platform_device *pdev)
{
pr_info("%s()\n", __func__);
}
static const struct platform_device_id s2mpm07_pmic_id[] = {
{ "s2mpm07-regulator", 0},
{ },
};
MODULE_DEVICE_TABLE(platform, s2mpm07_pmic_id);
static struct platform_driver s2mpm07_pmic_driver = {
.driver = {
.name = "s2mpm07-regulator",
.owner = THIS_MODULE,
.suppress_bind_attrs = true,
},
.probe = s2mpm07_pmic_probe,
.remove = s2mpm07_pmic_remove,
.shutdown = s2mpm07_pmic_shutdown,
.id_table = s2mpm07_pmic_id,
};
module_platform_driver(s2mpm07_pmic_driver);
/* Module information */
MODULE_AUTHOR("Samsung Electronics");
MODULE_DESCRIPTION("SAMSUNG S2MPM07 Regulator Driver");
MODULE_LICENSE("GPL");
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