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android/kernel/google-modules/soc/gs/refs/heads/android-gs-pantah-6.1-android16/./drivers/regulator/s2mpg13-regulator.c
blob: 82e102abeb9344d94bc358322757190e22150f06 [file] [edit]
// SPDX-License-Identifier: GPL-2.0+
/*
* s2mpg13-regulator.c
*
* Copyright (c) 2015 Samsung Electronics Co., Ltd
* http://www.samsung.com
*/
#include <linux/async.h>
#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/s2mpg13.h>
#include <linux/mfd/samsung/s2mpg13-register.h>
#include <linux/io.h>
#include <linux/mutex.h>
#include <linux/debugfs.h>
#include <linux/interrupt.h>
#include <linux/regulator/pmic_class.h>
#include <dt-bindings/regulator/samsung,s2mpg-regulator.h>
#ifndef TEST_DBG
#define TEST_DBG 0
#endif
static struct regulator_desc regulators[S2MPG13_REGULATOR_MAX];
static unsigned int s2mpg13_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 0x3;
}
}
static int s2m_set_mode(struct regulator_dev *rdev, unsigned int mode)
{
struct s2mpg13_pmic *s2mpg13 = rdev_get_drvdata(rdev);
unsigned int val;
int id = rdev_get_id(rdev);
int enable_mask = rdev->desc->enable_mask;
int enable_shift = 0;
while (1) {
if (enable_mask & 0x1)
break;
enable_shift++;
enable_mask = enable_mask >> 1;
if (enable_shift > 7)
dev_err(s2mpg13->dev, "[%d]: error caculating enable_shift!\n", id);
};
val = (mode << enable_shift) & rdev->desc->enable_mask;
s2mpg13->opmode[id] = val;
return 0;
}
static int s2m_enable(struct regulator_dev *rdev)
{
struct s2mpg13_pmic *s2mpg13 = rdev_get_drvdata(rdev);
return s2mpg13_update_reg(s2mpg13->i2c, rdev->desc->enable_reg,
s2mpg13->opmode[rdev_get_id(rdev)],
rdev->desc->enable_mask);
}
static int s2m_disable(struct regulator_dev *rdev)
{
struct s2mpg13_pmic *s2mpg13 = rdev_get_drvdata(rdev);
unsigned int val;
if (rdev->desc->enable_is_inverted)
val = rdev->desc->enable_mask;
else
val = 0;
return s2mpg13_update_reg(s2mpg13->i2c, rdev->desc->enable_reg, val,
rdev->desc->enable_mask);
}
static int s2m_is_enabled(struct regulator_dev *rdev)
{
struct s2mpg13_pmic *s2mpg13 = rdev_get_drvdata(rdev);
int ret;
u8 val;
ret = s2mpg13_read_reg(s2mpg13->i2c, rdev->desc->enable_reg, &val);
if (ret)
return ret;
if (rdev->desc->enable_is_inverted)
return (val & rdev->desc->enable_mask) == 0;
return (val & rdev->desc->enable_mask) != 0;
}
static int s2m_get_voltage_sel(struct regulator_dev *rdev)
{
struct s2mpg13_pmic *s2mpg13 = rdev_get_drvdata(rdev);
int ret;
u8 val;
ret = s2mpg13_read_reg(s2mpg13->i2c, rdev->desc->vsel_reg, &val);
if (ret)
return ret;
val &= rdev->desc->vsel_mask;
return val;
}
static int s2m_set_voltage_sel(struct regulator_dev *rdev, unsigned int sel)
{
struct s2mpg13_pmic *s2mpg13 = rdev_get_drvdata(rdev);
int ret;
ret = s2mpg13_update_reg(s2mpg13->i2c, rdev->desc->vsel_reg, sel,
rdev->desc->vsel_mask);
if (ret < 0)
goto out;
if (rdev->desc->apply_bit)
ret = s2mpg13_update_reg(s2mpg13->i2c, rdev->desc->apply_reg,
rdev->desc->apply_bit,
rdev->desc->apply_bit);
return ret;
out:
dev_warn(s2mpg13->dev, "%s: failed to set regulator voltage\n",
rdev->desc->name);
ret = -EINVAL;
return ret;
}
static int s2m_set_voltage_time_sel(struct regulator_dev *rdev,
unsigned int old_selector,
unsigned int new_selector)
{
struct s2mpg13_pmic *s2mpg13 = rdev_get_drvdata(rdev);
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) {
dev_warn(s2mpg13->dev, "%s: ramp_delay not set\n",
rdev->desc->name);
return -EINVAL;
}
/* validity 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);
return DIV_ROUND_UP(old_volt - new_volt, ramp_delay);
}
static struct regulator_ops s2mpg13_regulator_ops = {
.list_voltage = regulator_list_voltage_linear,
.map_voltage = regulator_map_voltage_linear,
.is_enabled = s2m_is_enabled,
.enable = s2m_enable,
.disable = s2m_disable,
.get_voltage_sel = s2m_get_voltage_sel,
.set_voltage_sel = s2m_set_voltage_sel,
.set_voltage_time_sel = s2m_set_voltage_time_sel,
.set_mode = s2m_set_mode,
};
#define _BUCK(macro) S2MPG13_BUCK##macro
#define _LDO(macro) S2MPG13_LDO##macro
#define _REG(ctrl) S2MPG13_PM##ctrl
#define _TIME(macro) S2MPG13_ENABLE_TIME##macro
#define _MIN(group) S2MPG13_REG_MIN##group
#define _STEP(group) S2MPG13_REG_STEP##group
#define _N_VOLTAGES(num) S2MPG13_REG_N_VOLTAGES_##num
#define _MASK(num) S2MPG13_REG_ENABLE_MASK##num
#define REG_DESC(_name, _id, g, v, n, e, em, t) \
{ \
.name = _name, .id = _id, .ops = &s2mpg13_regulator_ops, \
.type = REGULATOR_VOLTAGE, .owner = THIS_MODULE, \
.min_uV = _MIN(g), .uV_step = _STEP(g), .n_voltages = n, \
.vsel_reg = v, .vsel_mask = n - 1, .enable_reg = e, \
.enable_mask = em, .enable_time = t, \
.of_map_mode = s2mpg13_of_map_mode \
}
static struct regulator_desc regulators[S2MPG13_REGULATOR_MAX] = {
/* name, id, voltage_group, vsel_reg, n_voltages, */
/* enable_reg, enable_mask, enable_time */
REG_DESC("LDO1S", _LDO(1), 4, _REG(_L1S_CTRL), _N_VOLTAGES(128),
_REG(_LDO_CTRL1), _MASK(_1_0), _TIME(_LDO)),
REG_DESC("LDO2S", _LDO(2), 5, _REG(_L2S_CTRL), _N_VOLTAGES(64),
_REG(_L2S_CTRL), _MASK(_7_6), _TIME(_LDO)),
REG_DESC("LDO3S", _LDO(3), 5, _REG(_L3S_CTRL), _N_VOLTAGES(64),
_REG(_L3S_CTRL), _MASK(_7_6), _TIME(_LDO)),
REG_DESC("LDO4S", _LDO(4), 6, _REG(_L4S_CTRL), _N_VOLTAGES(64),
_REG(_L4S_CTRL), _MASK(_7), _TIME(_LDO)),
REG_DESC("LDO5S", _LDO(5), 7, _REG(_L5S_CTRL), _N_VOLTAGES(64),
_REG(_L5S_CTRL), _MASK(_7), _TIME(_LDO)),
REG_DESC("LDO6S", _LDO(6), 7, _REG(_L6S_CTRL), _N_VOLTAGES(64),
_REG(_L6S_CTRL), _MASK(_7), _TIME(_LDO)),
REG_DESC("LDO7S", _LDO(7), 6, _REG(_L7S_CTRL), _N_VOLTAGES(64),
_REG(_L7S_CTRL), _MASK(_7), _TIME(_LDO)),
REG_DESC("LDO8S", _LDO(8), 5, _REG(_L8S_CTRL), _N_VOLTAGES(64),
_REG(_L8S_CTRL), _MASK(_7_6), _TIME(_LDO)),
REG_DESC("LDO9S", _LDO(9), 5, _REG(_L9S_CTRL), _N_VOLTAGES(64),
_REG(_L9S_CTRL), _MASK(_7), _TIME(_LDO)),
REG_DESC("LDO10S", _LDO(10), 6, _REG(_L10S_CTRL), _N_VOLTAGES(64),
_REG(_L10S_CTRL), _MASK(_7), _TIME(_LDO)),
REG_DESC("LDO11S", _LDO(11), 6, _REG(_L11S_CTRL), _N_VOLTAGES(64),
_REG(_L11S_CTRL), _MASK(_7), _TIME(_LDO)),
REG_DESC("LDO12S", _LDO(12), 6, _REG(_L12S_CTRL), _N_VOLTAGES(64),
_REG(_L12S_CTRL), _MASK(_7), _TIME(_LDO)),
REG_DESC("LDO13S", _LDO(13), 7, _REG(_L13S_CTRL), _N_VOLTAGES(64),
_REG(_L13S_CTRL), _MASK(_7_6), _TIME(_LDO)),
REG_DESC("LDO14S", _LDO(14), 6, _REG(_L14S_CTRL), _N_VOLTAGES(64),
_REG(_L14S_CTRL), _MASK(_7), _TIME(_LDO)),
REG_DESC("LDO15S", _LDO(15), 7, _REG(_L15S_CTRL), _N_VOLTAGES(64),
_REG(_L15S_CTRL), _MASK(_7), _TIME(_LDO)),
REG_DESC("LDO16S", _LDO(16), 7, _REG(_L16S_CTRL), _N_VOLTAGES(64),
_REG(_L16S_CTRL), _MASK(_7), _TIME(_LDO)),
REG_DESC("LDO17S", _LDO(17), 6, _REG(_L17S_CTRL), _N_VOLTAGES(64),
_REG(_L17S_CTRL), _MASK(_7), _TIME(_LDO)),
REG_DESC("LDO18S", _LDO(18), 6, _REG(_L18S_CTRL), _N_VOLTAGES(64),
_REG(_L18S_CTRL), _MASK(_7_6), _TIME(_LDO)),
REG_DESC("LDO19S", _LDO(19), 6, _REG(_L19S_CTRL), _N_VOLTAGES(64),
_REG(_L19S_CTRL), _MASK(_7_6), _TIME(_LDO)),
REG_DESC("LDO20S", _LDO(20), 6, _REG(_L20S_CTRL), _N_VOLTAGES(64),
_REG(_L20S_CTRL), _MASK(_7_6), _TIME(_LDO)),
REG_DESC("LDO21S", _LDO(21), 5, _REG(_L21S_CTRL), _N_VOLTAGES(64),
_REG(_L21S_CTRL), _MASK(_7), _TIME(_LDO)),
REG_DESC("LDO22S", _LDO(22), 6, _REG(_L22S_CTRL), _N_VOLTAGES(64),
_REG(_L22S_CTRL), _MASK(_7), _TIME(_LDO)),
REG_DESC("LDO23S", _LDO(23), 4, _REG(_L23S_CTRL), _N_VOLTAGES(128),
_REG(_LDO_CTRL1), _MASK(_3_2), _TIME(_LDO)),
REG_DESC("LDO24S", _LDO(24), 4, _REG(_L24S_CTRL), _N_VOLTAGES(128),
_REG(_LDO_CTRL1), _MASK(_5_4), _TIME(_LDO)),
REG_DESC("LDO25S", _LDO(25), 4, _REG(_L25S_CTRL), _N_VOLTAGES(128),
_REG(_LDO_CTRL1), _MASK(_7), _TIME(_LDO)),
REG_DESC("LDO26S", _LDO(26), 4, _REG(_L26S_CTRL), _N_VOLTAGES(128),
_REG(_LDO_CTRL2), _MASK(_1_0), _TIME(_LDO)),
REG_DESC("LDO27S", _LDO(27), 6, _REG(_L27S_CTRL), _N_VOLTAGES(64),
_REG(_L27S_CTRL), _MASK(_7_6), _TIME(_LDO)),
REG_DESC("LDO28S", _LDO(28), 7, _REG(_L28S_CTRL), _N_VOLTAGES(64),
_REG(_L28S_CTRL), _MASK(_7), _TIME(_LDO)),
REG_DESC("BUCK1S", _BUCK(1), 1, _REG(_B1S_OUT1), _N_VOLTAGES(256),
_REG(_B1S_CTRL), _MASK(_7_6), _TIME(_BUCK)),
REG_DESC("BUCK2S", _BUCK(2), 1, _REG(_B2S_OUT1), _N_VOLTAGES(256),
_REG(_B2S_CTRL), _MASK(_7_6), _TIME(_BUCK)),
REG_DESC("BUCK3S", _BUCK(3), 1, _REG(_B3S_OUT1), _N_VOLTAGES(256),
_REG(_B3S_CTRL), _MASK(_7_6), _TIME(_BUCK)),
REG_DESC("BUCK4S", _BUCK(4), 1, _REG(_B4S_OUT), _N_VOLTAGES(256),
_REG(_B4S_CTRL), _MASK(_7_6), _TIME(_BUCK)),
REG_DESC("BUCK5S", _BUCK(5), 1, _REG(_B5S_OUT), _N_VOLTAGES(256),
_REG(_B5S_CTRL), _MASK(_7_6), _TIME(_BUCK)),
REG_DESC("BUCK6S", _BUCK(6), 1, _REG(_B6S_OUT1), _N_VOLTAGES(256),
_REG(_B6S_CTRL), _MASK(_7_6), _TIME(_BUCK)),
REG_DESC("BUCK7S", _BUCK(7), 2, _REG(_B7S_OUT1), _N_VOLTAGES(256),
_REG(_B7S_CTRL), _MASK(_7_6), _TIME(_BUCK)),
REG_DESC("BUCK8S", _BUCK(8), 1, _REG(_B8S_OUT1), _N_VOLTAGES(256),
_REG(_B8S_CTRL), _MASK(_7_6), _TIME(_BUCK)),
REG_DESC("BUCK9S", _BUCK(9), 1, _REG(_B9S_OUT1), _N_VOLTAGES(256),
_REG(_B9S_CTRL), _MASK(_7_6), _TIME(_BUCK)),
REG_DESC("BUCK10S", _BUCK(10), 1, _REG(_B10S_OUT), _N_VOLTAGES(256),
_REG(_B10S_CTRL), _MASK(_7_6), _TIME(_BUCK)),
REG_DESC("BUCKD", _BUCK(D), 2, _REG(_BUCKD_OUT), _N_VOLTAGES(256),
_REG(_BUCKD_CTRL), _MASK(_7_6), _TIME(_BUCK)),
REG_DESC("BUCKA", _BUCK(A), 2, _REG(_BUCKA_OUT), _N_VOLTAGES(256),
_REG(_BUCKA_CTRL), _MASK(_7_6), _TIME(_BUCK)),
REG_DESC("BUCKC", _BUCK(C), 1, _REG(_BUCKC_OUT), _N_VOLTAGES(256),
_REG(_BUCKC_CTRL), _MASK(_7_6), _TIME(_BUCK)),
REG_DESC("BUCKBOOST", S2MPG13_BUCKBOOST, 3, _REG(_BB_OUT1),
_N_VOLTAGES(128), _REG(_BB_CTRL), _MASK(_7), _TIME(_BUCK)),
};
#if IS_ENABLED(CONFIG_OF)
static int s2mpg13_pmic_dt_parse_pdata(struct s2mpg13_dev *iodev,
struct s2mpg13_platform_data *pdata)
{
struct device_node *pmic_np, *regulators_np, *reg_np;
struct s2mpg13_regulator_data *rdata;
unsigned int i;
int ret, len;
u32 val;
const u32 *p;
pmic_np = iodev->dev->of_node;
if (!pmic_np) {
dev_err(iodev->dev, "could not find pmic sub-node\n");
return -ENODEV;
}
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;
for_each_child_of_node(regulators_np, reg_np) {
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,
"don't know how to configure regulator %s\n",
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++;
}
/* parse BUCK OCP Detection information */
of_property_read_u32(pmic_np, "buck_ocp_ctrl1", &pdata->buck_ocp_ctrl1);
of_property_read_u32(pmic_np, "buck_ocp_ctrl2", &pdata->buck_ocp_ctrl2);
of_property_read_u32(pmic_np, "buck_ocp_ctrl3", &pdata->buck_ocp_ctrl3);
of_property_read_u32(pmic_np, "buck_ocp_ctrl4", &pdata->buck_ocp_ctrl4);
of_property_read_u32(pmic_np, "buck_ocp_ctrl5", &pdata->buck_ocp_ctrl5);
of_property_read_u32(pmic_np, "buck_ocp_ctrl6", &pdata->buck_ocp_ctrl6);
of_property_read_u32(pmic_np, "buck_ocp_ctrl7", &pdata->buck_ocp_ctrl7);
/* parse OCP_WARN information */
pdata->b2_ocp_warn_pin = of_get_gpio(pmic_np, 0);
if (pdata->b2_ocp_warn_pin < 0)
dev_err(iodev->dev, "b2_ocp_warn_pin < 0: %d\n",
pdata->b2_ocp_warn_pin);
ret = of_property_read_u32(pmic_np, "b2_ocp_warn_en", &val);
pdata->b2_ocp_warn_en = ret ? 0 : val;
ret = of_property_read_u32(pmic_np, "b2_ocp_warn_cnt", &val);
pdata->b2_ocp_warn_cnt = ret ? 0 : val;
ret = of_property_read_u32(pmic_np, "b2_ocp_warn_dvs_mask", &val);
pdata->b2_ocp_warn_dvs_mask = ret ? 0 : val;
ret = of_property_read_u32(pmic_np, "b2_ocp_warn_lvl", &val);
pdata->b2_ocp_warn_lvl = ret ? 0 : val;
/* parse SOFT_OCP_WARN information */
pdata->b2_soft_ocp_warn_pin = of_get_gpio(pmic_np, 1);
if (pdata->b2_soft_ocp_warn_pin < 0)
dev_err(iodev->dev, "b2_soft_ocp_warn_pin < 0: %d\n",
pdata->b2_soft_ocp_warn_pin);
ret = of_property_read_u32(pmic_np, "b2_soft_ocp_warn_en", &val);
pdata->b2_soft_ocp_warn_en = ret ? 0 : val;
ret = of_property_read_u32(pmic_np, "b2_soft_ocp_warn_cnt", &val);
pdata->b2_soft_ocp_warn_cnt = ret ? 0 : val;
ret = of_property_read_u32(pmic_np, "b2_soft_ocp_warn_dvs_mask", &val);
pdata->b2_soft_ocp_warn_dvs_mask = ret ? 0 : val;
ret = of_property_read_u32(pmic_np, "b2_soft_ocp_warn_lvl", &val);
pdata->b2_soft_ocp_warn_lvl = ret ? 0 : val;
/* Set SEL_VGPIO (control_sel) */
p = of_get_property(pmic_np, "sel_vgpio", &len);
if (!p) {
dev_err(iodev->dev, "(ERROR) sel_vgpio isn't parsing\n");
return -EINVAL;
}
len = len / sizeof(u32);
if (len != S2MPG13_VGPIO_NUM) {
dev_err(iodev->dev, "(ERROR) sel_vgpio num isn't not equal\n");
return -EINVAL;
}
pdata->sel_vgpio = devm_kzalloc(iodev->dev, sizeof(u32) * len, GFP_KERNEL);
if (!(pdata->sel_vgpio))
return -ENOMEM;
for (i = 0; i < len; i++) {
ret = of_property_read_u32_index(pmic_np, "sel_vgpio", i, &pdata->sel_vgpio[i]);
if (ret) {
dev_err(iodev->dev, "(ERROR) sel_vgpio%d is empty\n", i + 1);
pdata->sel_vgpio[i] = 0x1FF;
}
}
return 0;
}
#else
static int s2mpg13_pmic_dt_parse_pdata(struct s2mpg13_dev *iodev,
struct s2mpg13_platform_data *pdata)
{
return 0;
}
#endif /* CONFIG_OF */
#if IS_ENABLED(CONFIG_DRV_SAMSUNG_PMIC)
#define I2C_ADDR_TOP 0x00
#define I2C_ADDR_PMIC 0x01
#define I2C_ADDR_METER 0x0A
#define I2C_ADDR_WLWP 0x0B
#define I2C_ADDR_GPIO 0x0C
#define I2C_ADDR_MT_TRIM 0x0E
#define I2C_ADDR_TRIM 0x0F
static ssize_t s2mpg13_pmic_read_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t size)
{
struct s2mpg13_pmic *s2mpg13 = dev_get_drvdata(dev);
int ret;
u16 reg_addr;
if (!buf)
return -1;
ret = kstrtou16(buf, 0, &reg_addr);
if (ret < 0) {
dev_err(s2mpg13->dev, "fail to transform i2c address\n");
return ret;
}
s2mpg13->read_addr = reg_addr;
return size;
}
static ssize_t s2mpg13_pmic_read_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct s2mpg13_pmic *s2mpg13 = dev_get_drvdata(dev);
struct i2c_client *client = NULL;
u16 reg_addr = s2mpg13->read_addr;
u8 val;
int ret;
switch (reg_addr >> 8) {
case I2C_ADDR_TOP:
client = s2mpg13->iodev->i2c;
break;
case I2C_ADDR_PMIC:
client = s2mpg13->iodev->pmic;
break;
case I2C_ADDR_METER:
client = s2mpg13->iodev->meter;
break;
case I2C_ADDR_WLWP:
client = s2mpg13->iodev->wlwp;
break;
case I2C_ADDR_GPIO:
client = s2mpg13->iodev->gpio;
break;
case I2C_ADDR_MT_TRIM:
client = s2mpg13->iodev->mt_trim;
break;
case I2C_ADDR_TRIM:
client = s2mpg13->iodev->trim;
break;
default:
return -1;
}
ret = s2mpg13_read_reg(client, reg_addr, &val);
if (ret < 0) {
dev_err(dev, "fail to read i2c address\n");
return ret;
}
dev_dbg(dev, "reg(0x%04X) data(0x%02X)\n", reg_addr, val);
return scnprintf(buf, PAGE_SIZE, "0x%04X: 0x%02X\n", reg_addr, val);
}
static ssize_t s2mpg13_pmic_write_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t size)
{
struct s2mpg13_pmic *s2mpg13 = dev_get_drvdata(dev);
struct i2c_client *client = NULL;
int ret;
u16 reg;
u8 data;
if (!buf) {
dev_err(s2mpg13->dev, "empty buffer\n");
return size;
}
ret = sscanf(buf, "%hx %hhx", &reg, &data);
if (ret != 2) {
dev_err(s2mpg13->dev, "input error\n");
return size;
}
dev_dbg(s2mpg13->dev, "reg(0x%04X) data(0x%02X)\n", reg, data);
switch (reg >> 8) {
case I2C_ADDR_TOP:
client = s2mpg13->iodev->i2c;
break;
case I2C_ADDR_PMIC:
client = s2mpg13->iodev->pmic;
break;
case I2C_ADDR_METER:
client = s2mpg13->iodev->meter;
break;
case I2C_ADDR_WLWP:
client = s2mpg13->iodev->wlwp;
break;
case I2C_ADDR_GPIO:
client = s2mpg13->iodev->gpio;
break;
case I2C_ADDR_MT_TRIM:
client = s2mpg13->iodev->mt_trim;
break;
case I2C_ADDR_TRIM:
client = s2mpg13->iodev->trim;
break;
default:
return size;
}
ret = s2mpg13_write_reg(client, reg, data);
if (ret < 0)
dev_err(s2mpg13->dev, "fail to write i2c addr/data\n");
return size;
}
static ssize_t s2mpg13_pmic_write_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
return sprintf(buf, "echo (register addr.) (data) > s2mpg13_write\n");
}
static DEVICE_ATTR_RW(s2mpg13_pmic_write);
static DEVICE_ATTR_RW(s2mpg13_pmic_read);
int create_s2mpg13_pmic_sysfs(struct s2mpg13_pmic *s2mpg13)
{
struct device *s2mpg13_pmic = s2mpg13->dev;
int err = -ENODEV;
s2mpg13->read_addr = 0;
s2mpg13_pmic = pmic_device_create(s2mpg13, "s2mpg13-pmic");
err = device_create_file(s2mpg13_pmic, &dev_attr_s2mpg13_pmic_write);
if (err) {
dev_err(s2mpg13->dev,
"s2mpg13_sysfs: failed to create device file, %s\n",
dev_attr_s2mpg13_pmic_write.attr.name);
}
err = device_create_file(s2mpg13_pmic, &dev_attr_s2mpg13_pmic_read);
if (err) {
dev_err(s2mpg13->dev,
"s2mpg13_sysfs: failed to create device file, %s\n",
dev_attr_s2mpg13_pmic_read.attr.name);
}
return 0;
}
#endif
void s2mpg13_ocp_detection_config(struct s2mpg13_pmic *s2mpg13,
struct s2mpg13_platform_data *pdata)
{
int ret;
dev_info(s2mpg13->dev, "OCP_CTRL1: 0x%x\n", pdata->buck_ocp_ctrl1);
ret = s2mpg13_write_reg(s2mpg13->i2c, S2MPG13_PM_OCP_CTRL1, pdata->buck_ocp_ctrl1);
if (ret)
dev_err(s2mpg13->dev, "i2c write error setting BUCK_OCP_CTRL1: %d\n", ret);
dev_info(s2mpg13->dev, "OCP_CTRL2: 0x%x\n", pdata->buck_ocp_ctrl2);
ret = s2mpg13_write_reg(s2mpg13->i2c, S2MPG13_PM_OCP_CTRL2, pdata->buck_ocp_ctrl2);
if (ret)
dev_err(s2mpg13->dev, "i2c write error setting BUCK_OCP_CTRL2: %d\n", ret);
dev_info(s2mpg13->dev, "OCP_CTRL3: 0x%x\n", pdata->buck_ocp_ctrl3);
ret = s2mpg13_write_reg(s2mpg13->i2c, S2MPG13_PM_OCP_CTRL3, pdata->buck_ocp_ctrl3);
if (ret)
dev_err(s2mpg13->dev, "i2c write error setting BUCK_OCP_CTRL3: %d\n", ret);
dev_info(s2mpg13->dev, "OCP_CTRL4: 0x%x\n", pdata->buck_ocp_ctrl4);
ret = s2mpg13_write_reg(s2mpg13->i2c, S2MPG13_PM_OCP_CTRL4, pdata->buck_ocp_ctrl4);
if (ret)
dev_err(s2mpg13->dev, "i2c write error setting BUCK_OCP_CTRL4: %d\n", ret);
dev_info(s2mpg13->dev, "OCP_CTRL5: 0x%x\n", pdata->buck_ocp_ctrl5);
ret = s2mpg13_write_reg(s2mpg13->i2c, S2MPG13_PM_OCP_CTRL5, pdata->buck_ocp_ctrl5);
if (ret)
dev_err(s2mpg13->dev, "i2c write error setting BUCK_OCP_CTRL5: %d\n", ret);
dev_info(s2mpg13->dev, "OCP_CTRL6: 0x%x\n", pdata->buck_ocp_ctrl6);
ret = s2mpg13_write_reg(s2mpg13->i2c, S2MPG13_PM_OCP_CTRL6, pdata->buck_ocp_ctrl6);
if (ret)
dev_err(s2mpg13->dev, "i2c write error setting BUCK_OCP_CTRL6: %d\n", ret);
dev_info(s2mpg13->dev, "OCP_CTRL7: 0x%x\n", pdata->buck_ocp_ctrl7);
ret = s2mpg13_write_reg(s2mpg13->i2c, S2MPG13_PM_OCP_CTRL7, pdata->buck_ocp_ctrl7);
if (ret)
dev_err(s2mpg13->dev, "i2c write error setting BUCK_OCP_CTRL7: %d\n", ret);
}
int s2mpg13_ocp_warn(struct s2mpg13_pmic *s2mpg13,
struct s2mpg13_platform_data *pdata)
{
u8 val;
int ret;
val = (pdata->b2_ocp_warn_en << S2MPG13_OCP_WARN_EN_SHIFT) |
(pdata->b2_ocp_warn_cnt << S2MPG13_OCP_WARN_CNT_SHIFT) |
(pdata->b2_ocp_warn_dvs_mask << S2MPG13_OCP_WARN_DVS_MASK_SHIFT) |
(pdata->b2_ocp_warn_lvl << S2MPG13_OCP_WARN_LVL_SHIFT);
dev_info(s2mpg13->dev, "B2S_OCP_WARN : 0x%x\n", val);
ret = s2mpg13_write_reg(s2mpg13->i2c, S2MPG13_PM_B2S_OCP_WARN, val);
if (ret)
dev_err(s2mpg13->dev, "i2c write error setting b2s_ocp_warn\n");
val = (pdata->b2_soft_ocp_warn_en << S2MPG13_OCP_WARN_EN_SHIFT) |
(pdata->b2_soft_ocp_warn_cnt << S2MPG13_OCP_WARN_CNT_SHIFT) |
(pdata->b2_soft_ocp_warn_dvs_mask
<< S2MPG13_OCP_WARN_DVS_MASK_SHIFT) |
(pdata->b2_soft_ocp_warn_lvl << S2MPG13_OCP_WARN_LVL_SHIFT);
dev_info(s2mpg13->dev, "B2S_SOFT_OCP_WARN : 0x%x\n", val);
ret = s2mpg13_write_reg(s2mpg13->i2c, S2MPG13_PM_B2S_SOFT_OCP_WARN,
val);
if (ret)
dev_err(s2mpg13->dev, "i2c write error setting b2s_soft_ocp_warn\n");
return ret;
}
static int s2mpg13_set_sel_vgpio(struct s2mpg13_pmic *s2mpg13,
struct s2mpg13_platform_data *pdata)
{
int ret, i, cnt = 0;
u8 reg, val;
char prtlog[] = "0x%02hhx[0x%02hhx], ";
char buf[(S2MPG13_VGPIO_NUM * sizeof(prtlog))] = {0, };
for (i = 0; i < S2MPG13_VGPIO_NUM; i++) {
reg = S2MPG13_PM_PCTRLSEL1 + i;
val = pdata->sel_vgpio[i];
if (val > S2MPG13_VGPIO_MAX_VAL) {
dev_err(s2mpg13->dev, "sel_vgpio%d exceed the value\n", i + 1);
goto err;
}
ret = s2mpg13_write_reg(s2mpg13->i2c, reg, val);
if (ret) {
dev_err(s2mpg13->dev, "sel_vgpio%d write error\n", i + 1);
goto err;
}
cnt += snprintf(buf + cnt, sizeof(buf) - cnt, prtlog, reg, val);
}
dev_dbg(s2mpg13->dev, "vgpio: %s\n", buf);
return 0;
err:
return -1;
}
int s2mpg13_oi_function(struct s2mpg13_pmic *s2mpg13)
{
int ret = 0;
/* add OI configuration code if necessary */
/* OI function enable */
/* OI power down disable */
/* OI detection time window : 500us, OI comp. output count : 50 times */
return ret;
}
static int s2mpg13_pmic_probe(struct platform_device *pdev)
{
struct s2mpg13_dev *iodev = dev_get_drvdata(pdev->dev.parent);
struct s2mpg13_platform_data *pdata = iodev->pdata;
struct regulator_config config = {};
struct s2mpg13_pmic *s2mpg13;
int i, ret;
if (iodev->dev->of_node) {
ret = s2mpg13_pmic_dt_parse_pdata(iodev, pdata);
if (ret)
return ret;
}
if (!pdata) {
dev_err(pdev->dev.parent, "Platform data not supplied\n");
return -ENODEV;
}
s2mpg13 = devm_kzalloc(&pdev->dev, sizeof(struct s2mpg13_pmic),
GFP_KERNEL);
if (!s2mpg13)
return -ENOMEM;
s2mpg13->rdev = devm_kzalloc(&pdev->dev,
sizeof(struct regulator_dev *) *
S2MPG13_REGULATOR_MAX,
GFP_KERNEL);
if (!s2mpg13->rdev)
return -ENOMEM;
s2mpg13->opmode =
devm_kzalloc(&pdev->dev,
sizeof(unsigned int) * S2MPG13_REGULATOR_MAX,
GFP_KERNEL);
if (!s2mpg13->opmode)
return -ENOMEM;
s2mpg13->iodev = iodev;
s2mpg13->i2c = iodev->pmic;
s2mpg13->dev = &pdev->dev;
mutex_init(&s2mpg13->lock);
platform_set_drvdata(pdev, s2mpg13);
/* setting for LDOs with exceptional register structure */
for (i = 0; i < pdata->num_regulators; i++) {
int id = pdata->regulators[i].id;
config.dev = &pdev->dev;
config.init_data = pdata->regulators[i].initdata;
config.driver_data = s2mpg13;
config.of_node = pdata->regulators[i].reg_node;
s2mpg13->opmode[id] = regulators[id].enable_mask;
s2mpg13->rdev[i] = devm_regulator_register(&pdev->dev,
&regulators[id], &config);
if (IS_ERR(s2mpg13->rdev[i])) {
ret = PTR_ERR(s2mpg13->rdev[i]);
dev_err(&pdev->dev, "regulator init failed for %d\n", i);
return ret;
}
}
s2mpg13->num_regulators = pdata->num_regulators;
s2mpg13_ocp_detection_config(s2mpg13, pdata);
ret = s2mpg13_ocp_warn(s2mpg13, pdata);
if (ret < 0) {
dev_err(&pdev->dev, "s2mpg13_ocp_warn fail\n");
return ret;
}
ret = s2mpg13_set_sel_vgpio(s2mpg13, pdata);
if (ret < 0) {
dev_err(&pdev->dev, "s2mpg13_set_sel_vgpio fail\n");
return ret;
}
#if IS_ENABLED(TEST_DBG)
ret = s2mpg13_oi_function(s2mpg13);
if (ret < 0) {
dev_err(&pdev->dev, "s2mpg13_oi_function fail\n");
return ret;
}
#endif
#if IS_ENABLED(CONFIG_DRV_SAMSUNG_PMIC)
/* create sysfs */
ret = create_s2mpg13_pmic_sysfs(s2mpg13);
if (ret < 0)
return ret;
#endif
return 0;
}
static int s2mpg13_pmic_remove(struct platform_device *pdev)
{
#if IS_ENABLED(CONFIG_DRV_SAMSUNG_PMIC)
struct s2mpg13_pmic *s2mpg13 = platform_get_drvdata(pdev);
pmic_device_destroy(s2mpg13->dev->devt);
#endif
return 0;
}
static void s2mpg13_pmic_shutdown(struct platform_device *pdev)
{
}
#if IS_ENABLED(CONFIG_PM)
static int s2mpg13_pmic_suspend(struct device *dev)
{
#if IS_ENABLED(TEST_DBG)
struct platform_device *pdev = to_platform_device(dev);
struct s2mpg13_pmic *s2mpg13 = platform_get_drvdata(pdev);
#endif
int ret = 0;
return ret;
}
static int s2mpg13_pmic_resume(struct device *dev)
{
#if IS_ENABLED(TEST_DBG)
struct platform_device *pdev = to_platform_device(dev);
struct s2mpg13_pmic *s2mpg13 = platform_get_drvdata(pdev);
#endif
int ret = 0;
return ret;
}
#else
#define s2mpg13_pmic_suspend NULL
#define s2mpg13_pmic_resume NULL
#endif /* CONFIG_PM */
const struct dev_pm_ops s2mpg13_pmic_pm = {
.suspend = s2mpg13_pmic_suspend,
.resume = s2mpg13_pmic_resume,
};
static const struct platform_device_id s2mpg13_pmic_id[] = {
{ "s2mpg13-regulator", 0 },
{},
};
MODULE_DEVICE_TABLE(platform, s2mpg13_pmic_id);
static struct platform_driver s2mpg13_pmic_driver = {
.driver = {
.name = "s2mpg13-regulator",
.owner = THIS_MODULE,
#if IS_ENABLED(CONFIG_PM)
.pm = &s2mpg13_pmic_pm,
#endif
.suppress_bind_attrs = true,
},
.probe = s2mpg13_pmic_probe,
.remove = s2mpg13_pmic_remove,
.shutdown = s2mpg13_pmic_shutdown,
.id_table = s2mpg13_pmic_id,
};
static int __init s2mpg13_pmic_init(void)
{
return platform_driver_register(&s2mpg13_pmic_driver);
}
subsys_initcall(s2mpg13_pmic_init);
static void __exit s2mpg13_pmic_exit(void)
{
platform_driver_unregister(&s2mpg13_pmic_driver);
}
module_exit(s2mpg13_pmic_exit);
/* Module information */
MODULE_AUTHOR("Sangbeom Kim <[email protected]>");
MODULE_DESCRIPTION("SAMSUNG S2MPG13 Regulator Driver");
MODULE_LICENSE("GPL");