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alistair23-linux/drivers/regulator/pca9450-regulator.c

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/*
* @file pca9450-regulator.c ROHM PCA9450MWV regulator driver
*
* Copyright 2019 NXP.
*
*
* 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/interrupt.h>
#include <linux/platform_device.h>
#include <linux/regulator/driver.h>
#include <linux/regulator/machine.h>
#include <linux/delay.h>
#include <linux/slab.h>
#include <linux/gpio.h>
#include <linux/mfd/pca9450.h>
#include <linux/regulator/of_regulator.h>
#define PCA9450_DVS_BUCK_NUM 3 /* Buck 1/2/3 support DVS */
#define PCA9450_DVS0_1 2
#define PCA9450_DVS0 1
struct pca9450_buck_dvs {
u32 voltage[PCA9450_DVS0_1];
};
/* @brief pca9450 regulator type */
struct pca9450_pmic {
struct regulator_desc descs[PCA9450_REGULATOR_CNT];
struct pca9450 *mfd;
struct device *dev;
struct regulator_dev *rdev[PCA9450_REGULATOR_CNT];
struct pca9450_buck_dvs buck_dvs[PCA9450_DVS_BUCK_NUM];
int reg_index;
};
/*
* BUCK1/2/3
* BUCK1RAM[1:0] BUCK1 DVS ramp rate setting
* 00: 25mV/1usec
* 01: 25mV/2usec
* 10: 25mV/4usec
* 11: 25mV/8usec
*/
static int pca9450_buck123_set_ramp_delay(struct regulator_dev *rdev,
int ramp_delay)
{
struct pca9450_pmic *pmic = rdev_get_drvdata(rdev);
struct pca9450 *mfd = pmic->mfd;
int id = rdev->desc->id;
unsigned int ramp_value = BUCK1_RAMP_3P125MV;
unsigned int buckctrl[3] = {PCA9450_BUCK1CTRL, PCA9450_BUCK2CTRL,
PCA9450_BUCK3CTRL};
dev_dbg(pmic->dev, "Buck[%d] Set Ramp = %d\n", id + 1, ramp_delay);
switch (ramp_delay) {
case 1 ... 3125:
ramp_value = BUCK1_RAMP_3P125MV;
break;
case 3126 ... 6250:
ramp_value = BUCK1_RAMP_6P25MV;
break;
case 6251 ... 12500:
ramp_value = BUCK1_RAMP_12P5MV;
break;
case 12501 ... 25000:
ramp_value = BUCK1_RAMP_25MV;
break;
default:
ramp_value = BUCK1_RAMP_25MV;
}
return regmap_update_bits(mfd->regmap, buckctrl[id],
BUCK1_RAMP_MASK, ramp_value << 6);
}
static struct regulator_ops pca9450_ldo_regulator_ops = {
.enable = regulator_enable_regmap,
.disable = regulator_disable_regmap,
.is_enabled = regulator_is_enabled_regmap,
.list_voltage = regulator_list_voltage_linear_range,
.set_voltage_sel = regulator_set_voltage_sel_regmap,
.get_voltage_sel = regulator_get_voltage_sel_regmap,
};
static struct regulator_ops pca9450_fixed_regulator_ops = {
.enable = regulator_enable_regmap,
.disable = regulator_disable_regmap,
.is_enabled = regulator_is_enabled_regmap,
.list_voltage = regulator_list_voltage_linear,
};
static struct regulator_ops pca9450_buck_regulator_ops = {
.is_enabled = regulator_is_enabled_regmap,
.list_voltage = regulator_list_voltage_linear_range,
.set_voltage_sel = regulator_set_voltage_sel_regmap,
.get_voltage_sel = regulator_get_voltage_sel_regmap,
.set_voltage_time_sel = regulator_set_voltage_time_sel,
};
static struct regulator_ops pca9450_buck123_regulator_ops = {
.is_enabled = regulator_is_enabled_regmap,
.list_voltage = regulator_list_voltage_linear_range,
.set_voltage_sel = regulator_set_voltage_sel_regmap,
.get_voltage_sel = regulator_get_voltage_sel_regmap,
.set_voltage_time_sel = regulator_set_voltage_time_sel,
.set_ramp_delay = pca9450_buck123_set_ramp_delay,
};
/*
* BUCK1/2/3
* 0.60 to 2.1875V (12.5mV step)
*/
static const struct regulator_linear_range pca9450_buck123_voltage_ranges[] = {
REGULATOR_LINEAR_RANGE(600000, 0x00, 0x7F, 12500),
};
/*
* BUCK4/5/6
* 0.6V to 3.4V (25mV step)
*/
static const struct regulator_linear_range pca9450_buck456_voltage_ranges[] = {
REGULATOR_LINEAR_RANGE(600000, 0x00, 0x70, 25000),
REGULATOR_LINEAR_RANGE(3400000, 0x71, 0x7F, 0),
};
/*
* LDO1
* 1.6 to 3.3V ()
*/
static const struct regulator_linear_range pca9450_ldo1_voltage_ranges[] = {
REGULATOR_LINEAR_RANGE(1600000, 0x00, 0x03, 100000),
REGULATOR_LINEAR_RANGE(3000000, 0x04, 0x07, 100000),
};
/*
* LDO2
* 0.8 to 1.15V (50mV step)
*/
static const struct regulator_linear_range pca9450_ldo2_voltage_ranges[] = {
REGULATOR_LINEAR_RANGE(800000, 0x00, 0x07, 50000),
};
/*
* LDO3
* 0.8 to 3.3V (100mV step)
*/
static const struct regulator_linear_range pca9450_ldo34_voltage_ranges[] = {
REGULATOR_LINEAR_RANGE(800000, 0x00, 0x19, 100000),
REGULATOR_LINEAR_RANGE(3300000, 0x1A, 0x1F, 0),
};
/*
* LDO5
* 1.8 to 3.3V (100mV step)
*/
static const struct regulator_linear_range pca9450_ldo5_voltage_ranges[] = {
REGULATOR_LINEAR_RANGE(1800000, 0x00, 0x0F, 100000),
};
static const struct regulator_desc pca9450_regulators[] = {
{
.name = "BUCK1",
.id = PCA9450_BUCK1,
.ops = &pca9450_buck123_regulator_ops,
.type = REGULATOR_VOLTAGE,
.n_voltages = PCA9450_BUCK1_VOLTAGE_NUM,
.linear_ranges = pca9450_buck123_voltage_ranges,
.n_linear_ranges = ARRAY_SIZE(pca9450_buck123_voltage_ranges),
.vsel_reg = PCA9450_BUCK1OUT_DVS0,
.vsel_mask = BUCK1OUT_DVS0_MASK,
.enable_reg = PCA9450_BUCK1CTRL,
.enable_mask = BUCK1_ENMODE_MASK,
.owner = THIS_MODULE,
},
{
.name = "BUCK2",
.id = PCA9450_BUCK2,
.ops = &pca9450_buck123_regulator_ops,
.type = REGULATOR_VOLTAGE,
.n_voltages = PCA9450_BUCK2_VOLTAGE_NUM,
.linear_ranges = pca9450_buck123_voltage_ranges,
.n_linear_ranges = ARRAY_SIZE(pca9450_buck123_voltage_ranges),
.vsel_reg = PCA9450_BUCK2OUT_DVS0,
.vsel_mask = BUCK2OUT_DVS0_MASK,
.enable_reg = PCA9450_BUCK2CTRL,
.enable_mask = BUCK2_ENMODE_MASK,
.owner = THIS_MODULE,
},
{
.name = "BUCK3",
.id = PCA9450_BUCK3,
.ops = &pca9450_buck123_regulator_ops,
.type = REGULATOR_VOLTAGE,
.n_voltages = PCA9450_BUCK3_VOLTAGE_NUM,
.linear_ranges = pca9450_buck123_voltage_ranges,
.n_linear_ranges = ARRAY_SIZE(pca9450_buck123_voltage_ranges),
.vsel_reg = PCA9450_BUCK3OUT_DVS0,
.vsel_mask = BUCK3OUT_DVS0_MASK,
.enable_reg = PCA9450_BUCK3CTRL,
.enable_mask = BUCK3_ENMODE_MASK,
.owner = THIS_MODULE,
},
{
.name = "BUCK4",
.id = PCA9450_BUCK4,
.ops = &pca9450_buck_regulator_ops,
.type = REGULATOR_VOLTAGE,
.n_voltages = PCA9450_BUCK4_VOLTAGE_NUM,
.linear_ranges = pca9450_buck456_voltage_ranges,
.n_linear_ranges = ARRAY_SIZE(pca9450_buck456_voltage_ranges),
.vsel_reg = PCA9450_BUCK4OUT,
.vsel_mask = BUCK4OUT_MASK,
.enable_reg = PCA9450_BUCK4CTRL,
.enable_mask = BUCK4_ENMODE_MASK,
.owner = THIS_MODULE,
},
{
.name = "BUCK5",
.id = PCA9450_BUCK5,
.ops = &pca9450_buck_regulator_ops,
.type = REGULATOR_VOLTAGE,
.n_voltages = PCA9450_BUCK5_VOLTAGE_NUM,
.linear_ranges = pca9450_buck456_voltage_ranges,
.n_linear_ranges = ARRAY_SIZE(pca9450_buck456_voltage_ranges),
.vsel_reg = PCA9450_BUCK5OUT,
.vsel_mask = BUCK5OUT_MASK,
.enable_reg = PCA9450_BUCK5CTRL,
.enable_mask = BUCK5_ENMODE_MASK,
.owner = THIS_MODULE,
},
{
.name = "BUCK6",
.id = PCA9450_BUCK6,
.ops = &pca9450_buck_regulator_ops,
.type = REGULATOR_VOLTAGE,
.n_voltages = PCA9450_BUCK6_VOLTAGE_NUM,
.linear_ranges = pca9450_buck456_voltage_ranges,
.n_linear_ranges = ARRAY_SIZE(pca9450_buck456_voltage_ranges),
.vsel_reg = PCA9450_BUCK6OUT,
.vsel_mask = BUCK6OUT_MASK,
.enable_reg = PCA9450_BUCK6CTRL,
.enable_mask = BUCK6_ENMODE_MASK,
.owner = THIS_MODULE,
},
{
.name = "LDO1",
.id = PCA9450_LDO1,
.ops = &pca9450_ldo_regulator_ops,
.type = REGULATOR_VOLTAGE,
.n_voltages = PCA9450_LDO1_VOLTAGE_NUM,
.linear_ranges = pca9450_ldo1_voltage_ranges,
.n_linear_ranges = ARRAY_SIZE(pca9450_ldo1_voltage_ranges),
.vsel_reg = PCA9450_LDO1CTRL,
.vsel_mask = LDO1OUT_MASK,
.enable_reg = PCA9450_LDO1CTRL,
.enable_mask = LDO1_EN_MASK,
.owner = THIS_MODULE,
},
/*
* LDO2 0.9V
* Fixed voltage
*/
{
.name = "LDO2",
.id = PCA9450_LDO2,
.ops = &pca9450_fixed_regulator_ops,
.type = REGULATOR_VOLTAGE,
.n_voltages = PCA9450_LDO2_VOLTAGE_NUM,
.min_uV = 900000,
.enable_reg = PCA9450_LDO2CTRL,
.enable_mask = LDO2_EN_MASK,
.owner = THIS_MODULE,
},
{
.name = "LDO3",
.id = PCA9450_LDO3,
.ops = &pca9450_ldo_regulator_ops,
.type = REGULATOR_VOLTAGE,
.n_voltages = PCA9450_LDO3_VOLTAGE_NUM,
.linear_ranges = pca9450_ldo34_voltage_ranges,
.n_linear_ranges = ARRAY_SIZE(pca9450_ldo34_voltage_ranges),
.vsel_reg = PCA9450_LDO3CTRL,
.vsel_mask = LDO3OUT_MASK,
.enable_reg = PCA9450_LDO3CTRL,
.enable_mask = LDO3_EN_MASK,
.owner = THIS_MODULE,
},
{
.name = "LDO4",
.id = PCA9450_LDO4,
.ops = &pca9450_ldo_regulator_ops,
.type = REGULATOR_VOLTAGE,
.n_voltages = PCA9450_LDO4_VOLTAGE_NUM,
.linear_ranges = pca9450_ldo34_voltage_ranges,
.n_linear_ranges = ARRAY_SIZE(pca9450_ldo34_voltage_ranges),
.vsel_reg = PCA9450_LDO4CTRL,
.vsel_mask = LDO4OUT_MASK,
.enable_reg = PCA9450_LDO4CTRL,
.enable_mask = LDO4_EN_MASK,
.owner = THIS_MODULE,
},
{
.name = "LDO5",
.id = PCA9450_LDO5,
.ops = &pca9450_ldo_regulator_ops,
.type = REGULATOR_VOLTAGE,
.n_voltages = PCA9450_LDO5_VOLTAGE_NUM,
.linear_ranges = pca9450_ldo5_voltage_ranges,
.n_linear_ranges = ARRAY_SIZE(pca9450_ldo5_voltage_ranges),
.vsel_reg = PCA9450_LDO5CTRL_H,
.vsel_mask = LDO5HOUT_MASK,
.enable_reg = PCA9450_LDO5CTRL_H,
.enable_mask = LDO5H_EN_MASK,
.owner = THIS_MODULE,
},
};
#ifdef CONFIG_OF
static struct of_regulator_match pca9450_matches[] = {
{ .name = "buck1", },
{ .name = "buck2", },
{ .name = "buck3", },
{ .name = "buck4", },
{ .name = "buck5", },
{ .name = "buck6", },
{ .name = "ldo1", },
{ .name = "ldo2", },
{ .name = "ldo3", },
{ .name = "ldo4", },
{ .name = "ldo5", },
};
/*
* @brief parse pca9450 regulator device tree
* @param pdev platform device of pca9450 regulator
* @param pca9450_reg_matches return regualtor matches
* @retval 0 parse success
* @retval NULL parse fail
*/
static int pca9450_parse_dt_reg_data(
struct platform_device *pdev,
struct of_regulator_match **reg_matches)
{
struct device_node *np, *regulators;
struct of_regulator_match *matches;
int ret, count;
np = of_node_get(pdev->dev.parent->of_node);
regulators = of_find_node_by_name(np, "regulators");
if (!regulators) {
dev_err(&pdev->dev, "regulator node not found\n");
return -EINVAL;
}
count = ARRAY_SIZE(pca9450_matches);
matches = pca9450_matches;
ret = of_regulator_match(&pdev->dev, regulators, matches, count);
of_node_put(regulators);
if (ret < 0) {
dev_err(&pdev->dev, "Error parsing regulator init data: %d\n",
ret);
return ret;
}
*reg_matches = matches;
return 0;
}
#else
static inline int pca9450_parse_dt_reg_data(
struct platform_device *pdev,
struct of_regulator_match **reg_matches)
{
*reg_matches = NULL;
return 0;
}
#endif
/* @brief directly set raw value to chip register, format: 'register value' */
static ssize_t pca9450_sysfs_set_registers(struct device *dev,
struct device_attribute *attr,
const char *buf,
size_t count)
{
struct pca9450_pmic *pmic = dev_get_drvdata(dev);
ssize_t ret = 0;
unsigned int reg;
unsigned int val;
ret = sscanf(buf, "%x %x", &reg, &val);
if (ret < 1) {
pmic->reg_index = -1;
dev_err(pmic->dev, "registers set: <reg> <value>\n");
return count;
}
if (ret == 1 && reg < PCA9450_MAX_REGISTER) {
pmic->reg_index = reg;
dev_info(pmic->dev, "registers set: reg=0x%x\n", reg);
return count;
}
if (reg >= PCA9450_MAX_REGISTER) {
dev_err(pmic->dev, "reg=%d out of Max=%d\n", reg,
PCA9450_MAX_REGISTER);
return -EINVAL;
}
dev_info(pmic->dev, "registers set: reg=0x%x, val=0x%x\n", reg, val);
ret = pca9450_reg_write(pmic->mfd, reg, val);
if (ret < 0)
return ret;
return count;
}
/* @brief print value of chip register, format: 'register=value' */
static ssize_t pca9450_sysfs_print_reg(struct pca9450_pmic *pmic,
u8 reg,
char *buf)
{
int ret = pca9450_reg_read(pmic->mfd, reg);
if (ret < 0)
return sprintf(buf, "%#.2x=error %d\n", reg, ret);
return sprintf(buf, "[0x%.2X] = %.2X\n", reg, ret);
}
/*
* @brief show all raw values of chip register, format per line:
* 'register=value'
*/
static ssize_t pca9450_sysfs_show_registers(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct pca9450_pmic *pmic = dev_get_drvdata(dev);
ssize_t ret = 0;
int i;
dev_info(pmic->dev, "register: index[0x%x]\n", pmic->reg_index);
if (pmic->reg_index >= 0)
ret += pca9450_sysfs_print_reg(pmic, pmic->reg_index,
buf + ret);
else
for (i = 0; i < PCA9450_MAX_REGISTER; i++)
ret += pca9450_sysfs_print_reg(pmic, i, buf + ret);
return ret;
}
static DEVICE_ATTR(registers, 0644,
pca9450_sysfs_show_registers, pca9450_sysfs_set_registers);
/* @brief device sysfs attribute table, about o */
static struct attribute *clk_attributes[] = {
&dev_attr_registers.attr,
NULL
};
static const struct attribute_group clk_attr_group = {
.attrs = clk_attributes,
};
/*----------------------------------------------------------------------*/
#ifdef CONFIG_OF
/*
* @brief buck1/2 dvs enable/voltage from device tree
* @param pdev platform device pointer
* @param buck_dvs pointer
* @return void
*/
static void of_pca9450_buck_dvs(struct platform_device *pdev,
struct pca9450_buck_dvs *buck_dvs)
{
struct device_node *pmic_np;
pmic_np = of_node_get(pdev->dev.parent->of_node);
if (!pmic_np) {
dev_err(&pdev->dev, "could not find pmic sub-node\n");
return;
}
if (of_get_property(pmic_np, "pca9450,pmic-buck1-uses-i2c-dvs", NULL)) {
if (of_property_read_u32_array(pmic_np,
"pca9450,pmic-buck1-dvs-voltage",
&buck_dvs[0].voltage[0],
PCA9450_DVS0_1)) {
dev_err(&pdev->dev, "buck1 voltages not specified\n");
}
}
if (of_get_property(pmic_np, "pca9450,pmic-buck2-uses-i2c-dvs", NULL)) {
if (of_property_read_u32_array(pmic_np,
"pca9450,pmic-buck2-dvs-voltage",
&buck_dvs[1].voltage[0],
PCA9450_DVS0_1)) {
dev_err(&pdev->dev, "buck2 voltages not specified\n");
}
}
if (of_get_property(pmic_np, "pca9450,pmic-buck3-uses-i2c-dvs", NULL)) {
if (of_property_read_u32_array(pmic_np,
"pca9450,pmic-buck3-dvs-voltage",
&buck_dvs[2].voltage[0],
PCA9450_DVS0)) {
dev_err(&pdev->dev, "buck3 voltages not specified\n");
}
}
}
#else
static void of_pca9450_buck_dvs(struct platform_device *pdev,
struct pca9450_buck_dvs *buck_dvs)
{
buck_dvs[0].voltage[0] = BUCK1OUT_DVS0_DEFAULT;
buck_dvs[0].voltage[1] = BUCK1OUT_DVS1_DEFAULT;
buck_dvs[1].voltage[0] = BUCK2OUT_DVS0_DEFAULT;
buck_dvs[1].voltage[1] = BUCK2OUT_DVS1_DEFAULT;
buck_dvs[2].voltage[0] = BUCK3OUT_DVS0_DEFAULT;
buck_dvs[2].voltage[1] = 0; /* Not supported */
}
#endif
static int pca9450_buck123_dvs_init(struct pca9450_pmic *pmic)
{
struct pca9450 *pca9450 = pmic->mfd;
struct pca9450_buck_dvs *buck_dvs = &pmic->buck_dvs[0];
int i, ret, val, selector = 0;
u8 reg_dvs0, reg_dvs1;
u8 reg_dvs0_msk, reg_dvs1_msk;
for (i = 0; i < PCA9450_DVS_BUCK_NUM; i++, buck_dvs++) {
switch (i) {
case 0:
default:
reg_dvs0 = PCA9450_BUCK1OUT_DVS0;
reg_dvs0_msk = BUCK1OUT_DVS0_MASK;
reg_dvs1 = PCA9450_BUCK1OUT_DVS1;
reg_dvs1_msk = BUCK1OUT_DVS1_MASK;
break;
case 1:
reg_dvs0 = PCA9450_BUCK2OUT_DVS0;
reg_dvs0_msk = BUCK2OUT_DVS0_MASK;
reg_dvs1 = PCA9450_BUCK2OUT_DVS1;
reg_dvs1_msk = BUCK2OUT_DVS1_MASK;
break;
case 2:
reg_dvs0 = PCA9450_BUCK3OUT_DVS0;
reg_dvs0_msk = BUCK3OUT_DVS0_MASK;
reg_dvs1 = PCA9450_BUCK3OUT_DVS1;
reg_dvs1_msk = BUCK3OUT_DVS1_MASK;
break;
}
dev_dbg(pmic->dev, "Buck%d: DVS0-DVS1[%d - %d].\n", i+1,
buck_dvs->voltage[0], buck_dvs->voltage[1]);
if (reg_dvs0 > 0) {
selector = regulator_map_voltage_iterate(pmic->rdev[i],
buck_dvs->voltage[0],
buck_dvs->voltage[0]);
if (selector < 0) {
dev_dbg(pmic->dev,
"not found selector for DVS0 [%d]\n",
buck_dvs->voltage[0]);
} else {
val = (selector & reg_dvs0_msk);
ret = pca9450_reg_write(pca9450, reg_dvs0, val);
if (ret < 0)
return ret;
}
}
if (reg_dvs1 > 0) {
selector = regulator_map_voltage_iterate(pmic->rdev[i],
buck_dvs->voltage[1],
buck_dvs->voltage[1]);
if (selector < 0) {
dev_dbg(pmic->dev,
"not found selector for DVS1 [%d]\n",
buck_dvs->voltage[1]);
} else {
val = (selector & reg_dvs1_msk);
ret = pca9450_reg_write(pca9450, reg_dvs1, val);
if (ret < 0)
return ret;
}
}
}
return 0;
}
/*
* @brief pca9450 pmic interrupt
* @param irq system irq
* @param pwrsys pca9450 power device of system
* @retval IRQ_HANDLED success
* @retval IRQ_NONE error
*/
static irqreturn_t pca9450_pmic_interrupt(int irq, void *pwrsys)
{
struct device *dev = pwrsys;
struct pca9450 *mfd = dev_get_drvdata(dev->parent);
int reg;
reg = pca9450_reg_read(mfd, PCA9450_INT1);
if (reg < 0)
return IRQ_NONE;
if (reg & IRQ_PWRON)
dev_dbg(dev, "IRQ_PWRON\n");
if (reg & IRQ_WDOGB)
dev_dbg(dev, "IRQ_WDOGB\n");
if (reg & IRQ_VR_FLT1)
dev_dbg(dev, "IRQ_VR_FLT1\n");
if (reg & IRQ_VR_FLT2)
dev_dbg(dev, "IRQ_VR_FLT2\n");
if (reg & IRQ_LOWVSYS)
dev_dbg(dev, "IRQ_LOWVSYS\n");
if (reg & IRQ_THERM_105)
dev_dbg(dev, "IRQ_THERM_105\n");
if (reg & IRQ_THERM_125)
dev_dbg(dev, "IRQ_THERM_125\n");
return IRQ_HANDLED;
}
/*
* @brief probe pca9450 regulator device
* @param pdev pca9450 regulator platform device
* @retval 0 success
* @retval negative fail
*/
static int pca9450_probe(struct platform_device *pdev)
{
struct pca9450_pmic *pmic;
struct pca9450_board *pdata;
struct regulator_config config = {};
struct pca9450 *pca9450 = dev_get_drvdata(pdev->dev.parent);
struct of_regulator_match *matches = NULL;
int i = 0, err, irq = 0, ret = 0;
pmic = kzalloc(sizeof(*pmic), GFP_KERNEL);
if (!pmic)
return -ENOMEM;
memcpy(pmic->descs, pca9450_regulators, sizeof(pmic->descs));
pmic->dev = &pdev->dev;
pmic->mfd = pca9450;
platform_set_drvdata(pdev, pmic);
pdata = dev_get_platdata(pca9450->dev);
if (!pdata && pca9450->dev->of_node) {
pca9450_parse_dt_reg_data(pdev, &matches);
if (matches == NULL) {
dev_err(&pdev->dev, "Platform data not found\n");
return -EINVAL;
}
}
/* Get buck dvs parameters */
of_pca9450_buck_dvs(pdev, &pmic->buck_dvs[0]);
for (i = 0; i < PCA9450_REGULATOR_CNT; i++) {
struct regulator_init_data *init_data;
struct regulator_desc *desc;
struct regulator_dev *rdev;
desc = &pmic->descs[i];
desc->name = pca9450_matches[i].name;
if (pdata)
init_data = pdata->init_data[i];
else
init_data = pca9450_matches[i].init_data;
config.dev = pmic->dev;
config.init_data = init_data;
config.driver_data = pmic;
config.regmap = pca9450->regmap;
if (matches)
config.of_node = matches[i].of_node;
dev_dbg(config.dev, "regulator register name '%s'\n",
desc->name);
rdev = regulator_register(desc, &config);
if (IS_ERR(rdev)) {
dev_err(pca9450->dev,
"failed to register %s regulator\n",
desc->name);
err = PTR_ERR(rdev);
goto err;
}
pmic->rdev[i] = rdev;
}
/* Init sysfs registers */
pmic->reg_index = -1;
err = sysfs_create_group(&pdev->dev.kobj, &clk_attr_group);
if (err != 0) {
dev_err(&pdev->dev, "Failed to create sysfs: %d\n", err);
goto err;
}
/* Init Buck1/2/3 dvs */
err = pca9450_buck123_dvs_init(pmic);
if (err != 0) {
dev_err(&pdev->dev, "Failed to buck123 dvs: %d\n", err);
goto err;
}
/* Add Interrupt */
irq = platform_get_irq(pdev, 0);
if (irq <= 0) {
dev_warn(&pdev->dev, "platform irq error # %d\n", irq);
return -ENXIO;
}
ret = devm_request_threaded_irq(&pdev->dev, irq, NULL,
pca9450_pmic_interrupt,
IRQF_TRIGGER_LOW | IRQF_EARLY_RESUME,
dev_name(&pdev->dev), &pdev->dev);
if (ret < 0)
dev_err(&pdev->dev, "IRQ %d is not free.\n", irq);
/* Un-mask IRQ Interrupt */
ret = pca9450_reg_write(pca9450, PCA9450_INT1_MSK, 0);
if (ret < 0) {
dev_err(&pdev->dev, "Write 'PCA9450_REG_MIRQ': failed!\n");
ret = -EIO;
goto err;
}
return 0;
err:
while (--i >= 0)
regulator_unregister(pmic->rdev[i]);
kfree(pmic);
return err;
}
/*
* @brief remove pca9450 regulator device
* @param pdev pca9450 regulator platform device
* @return 0
*/
static int __exit pca9450_remove(struct platform_device *pdev)
{
struct pca9450_pmic *pmic = platform_get_drvdata(pdev);
int i;
sysfs_remove_group(&pdev->dev.kobj, &clk_attr_group);
for (i = 0; i < PCA9450_REGULATOR_CNT; i++)
regulator_unregister(pmic->rdev[i]);
kfree(pmic);
return 0;
}
static struct platform_driver pca9450_driver = {
.driver = {
.name = "pca9450-pmic",
.owner = THIS_MODULE,
},
.probe = pca9450_probe,
.remove = pca9450_remove,
};
module_platform_driver(pca9450_driver);
MODULE_DESCRIPTION("PCA9450 voltage regulator driver");
MODULE_LICENSE("GPL v2");
MODULE_ALIAS("platform:pca9450-pmic");
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