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zircon-guest/third_party/linux/refs/heads/linux-7.3.y/./drivers/regulator/pca9450-regulator.c
blob: c41db70fa052910df816c10853c550399583b832 [file] [edit]
// SPDX-License-Identifier: GPL-2.0
/*
* Copyright 2020 NXP.
* NXP PCA9450 pmic driver
*/
#include <linux/err.h>
#include <linux/gpio/consumer.h>
#include <linux/i2c.h>
#include <linux/interrupt.h>
#include <linux/kernel.h>
#include <linux/reboot.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/platform_device.h>
#include <linux/regulator/driver.h>
#include <linux/regulator/machine.h>
#include <linux/regulator/of_regulator.h>
#include <linux/regulator/pca9450.h>
#include <dt-bindings/regulator/nxp,pca9450-regulator.h>
static unsigned int pca9450_buck_get_mode(struct regulator_dev *rdev);
static int pca9450_buck_set_mode(struct regulator_dev *rdev, unsigned int mode);
struct pc9450_dvs_config {
unsigned int run_reg; /* dvs0 */
unsigned int run_mask;
unsigned int standby_reg; /* dvs1 */
unsigned int standby_mask;
unsigned int mode_reg; /* ctrl */
unsigned int mode_mask;
};
struct pca9450_regulator_desc {
struct regulator_desc desc;
const struct pc9450_dvs_config dvs;
};
struct pca9450 {
struct device *dev;
struct regmap *regmap;
struct gpio_desc *sd_vsel_gpio;
enum pca9450_chip_type type;
unsigned int rcnt;
int irq;
bool sd_vsel_fixed_low;
int default_t_off_deb;
};
static const struct regmap_range pca9450_status_range = {
.range_min = PCA9450_REG_INT1,
.range_max = PCA9450_REG_PWRON_STAT,
};
static const struct regmap_access_table pca9450_volatile_regs = {
.yes_ranges = &pca9450_status_range,
.n_yes_ranges = 1,
};
static const struct regmap_config pca9450_regmap_config = {
.reg_bits = 8,
.val_bits = 8,
.volatile_table = &pca9450_volatile_regs,
.max_register = PCA9450_MAX_REGISTER - 1,
.cache_type = REGCACHE_MAPLE,
};
/*
* BUCK1/2/3
* BUCK1RAM[1:0] BUCK1 DVS ramp rate setting
* 00: 25mV/1usec
* 01: 25mV/2usec
* 10: 25mV/4usec
* 11: 25mV/8usec
*/
static const unsigned int pca9450_dvs_buck_ramp_table[] = {
25000, 12500, 6250, 3125
};
static const struct regulator_ops pca9450_dvs_buck_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,
.set_voltage_time_sel = regulator_set_voltage_time_sel,
.set_ramp_delay = regulator_set_ramp_delay_regmap,
.set_mode = pca9450_buck_set_mode,
.get_mode = pca9450_buck_get_mode,
};
static const struct regulator_ops pca9450_buck_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,
.set_voltage_time_sel = regulator_set_voltage_time_sel,
.set_mode = pca9450_buck_set_mode,
.get_mode = pca9450_buck_get_mode,
};
static const 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 unsigned int pca9450_ldo5_get_reg_voltage_sel(struct regulator_dev *rdev)
{
struct pca9450 *pca9450 = rdev_get_drvdata(rdev);
if (pca9450->sd_vsel_fixed_low)
return PCA9450_REG_LDO5CTRL_L;
if (pca9450->sd_vsel_gpio && !gpiod_get_value(pca9450->sd_vsel_gpio))
return PCA9450_REG_LDO5CTRL_L;
return rdev->desc->vsel_reg;
}
static int pca9450_ldo5_get_voltage_sel_regmap(struct regulator_dev *rdev)
{
unsigned int val;
int ret;
ret = regmap_read(rdev->regmap, pca9450_ldo5_get_reg_voltage_sel(rdev), &val);
if (ret != 0)
return ret;
val &= rdev->desc->vsel_mask;
val >>= ffs(rdev->desc->vsel_mask) - 1;
return val;
}
static int pca9450_ldo5_set_voltage_sel_regmap(struct regulator_dev *rdev, unsigned int sel)
{
int ret;
sel <<= ffs(rdev->desc->vsel_mask) - 1;
ret = regmap_update_bits(rdev->regmap, pca9450_ldo5_get_reg_voltage_sel(rdev),
rdev->desc->vsel_mask, sel);
if (ret)
return ret;
if (rdev->desc->apply_bit)
ret = regmap_update_bits(rdev->regmap, rdev->desc->apply_reg,
rdev->desc->apply_bit,
rdev->desc->apply_bit);
return ret;
}
static const struct regulator_ops pca9450_ldo5_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 = pca9450_ldo5_set_voltage_sel_regmap,
.get_voltage_sel = pca9450_ldo5_get_voltage_sel_regmap,
};
/*
* BUCK1/2/3
* 0.60 to 2.1875V (12.5mV step)
*/
static const struct linear_range pca9450_dvs_buck_volts[] = {
REGULATOR_LINEAR_RANGE(600000, 0x00, 0x7F, 12500),
};
/*
* BUCK1/3
* 0.65 to 2.2375V (12.5mV step)
*/
static const struct linear_range pca9451a_dvs_buck_volts[] = {
REGULATOR_LINEAR_RANGE(650000, 0x00, 0x7F, 12500),
};
/*
* BUCK4/5/6
* 0.6V to 3.4V (25mV step)
*/
static const struct linear_range pca9450_buck_volts[] = {
REGULATOR_LINEAR_RANGE(600000, 0x00, 0x70, 25000),
REGULATOR_LINEAR_RANGE(3400000, 0x71, 0x7F, 0),
};
/*
* LDO1
* 1.6 to 3.3V ()
*/
static const struct linear_range pca9450_ldo1_volts[] = {
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 linear_range pca9450_ldo2_volts[] = {
REGULATOR_LINEAR_RANGE(800000, 0x00, 0x07, 50000),
};
/*
* LDO3/4
* 0.8 to 3.3V (100mV step)
*/
static const struct linear_range pca9450_ldo34_volts[] = {
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 linear_range pca9450_ldo5_volts[] = {
REGULATOR_LINEAR_RANGE(1800000, 0x00, 0x0F, 100000),
};
static int buck_set_dvs(const struct regulator_desc *desc,
struct device_node *np, struct regmap *regmap,
char *prop, unsigned int reg, unsigned int mask)
{
int ret, i;
uint32_t uv;
ret = of_property_read_u32(np, prop, &uv);
if (ret == -EINVAL)
return 0;
else if (ret)
return ret;
for (i = 0; i < desc->n_voltages; i++) {
ret = regulator_desc_list_voltage_linear_range(desc, i);
if (ret < 0)
continue;
if (ret == uv) {
i <<= ffs(desc->vsel_mask) - 1;
ret = regmap_update_bits(regmap, reg, mask, i);
break;
}
}
if (ret == 0) {
const struct pca9450_regulator_desc *regulator = container_of_const(desc,
struct pca9450_regulator_desc, desc);
/* Enable DVS control through PMIC_STBY_REQ for this BUCK */
ret = regmap_update_bits(regmap, regulator->desc.enable_reg,
BUCK1_DVS_CTRL, BUCK1_DVS_CTRL);
}
return ret;
}
static int pca9450_set_dvs_levels(struct device_node *np,
const struct regulator_desc *desc,
struct regulator_config *cfg)
{
const struct pca9450_regulator_desc *data = container_of_const(desc,
struct pca9450_regulator_desc, desc);
const struct pc9450_dvs_config *dvs = &data->dvs;
unsigned int reg, mask;
char *prop;
int i, ret = 0;
for (i = 0; i < PCA9450_DVS_LEVEL_MAX; i++) {
switch (i) {
case PCA9450_DVS_LEVEL_RUN:
prop = "nxp,dvs-run-voltage";
reg = dvs->run_reg;
mask = dvs->run_mask;
break;
case PCA9450_DVS_LEVEL_STANDBY:
prop = "nxp,dvs-standby-voltage";
reg = dvs->standby_reg;
mask = dvs->standby_mask;
break;
default:
return -EINVAL;
}
ret = buck_set_dvs(desc, np, cfg->regmap, prop, reg, mask);
if (ret)
break;
}
return ret;
}
static inline unsigned int pca9450_map_mode(unsigned int mode)
{
switch (mode) {
case PCA9450_BUCK_MODE_AUTO:
return REGULATOR_MODE_NORMAL;
case PCA9450_BUCK_MODE_FORCE_PWM:
return REGULATOR_MODE_FAST;
default:
return REGULATOR_MODE_INVALID;
}
}
static int pca9450_buck_set_mode(struct regulator_dev *rdev, unsigned int mode)
{
const struct pca9450_regulator_desc *desc = container_of_const(rdev->desc,
struct pca9450_regulator_desc, desc);
const struct pc9450_dvs_config *dvs = &desc->dvs;
int val;
switch (mode) {
case REGULATOR_MODE_FAST:
val = dvs->mode_mask;
break;
case REGULATOR_MODE_NORMAL:
val = 0;
break;
default:
return -EINVAL;
}
dev_dbg(&rdev->dev, "pca9450 buck set_mode %#x, %#x, %#x\n",
dvs->mode_reg, dvs->mode_mask, val);
return regmap_update_bits(rdev->regmap, dvs->mode_reg,
dvs->mode_mask, val);
}
static unsigned int pca9450_buck_get_mode(struct regulator_dev *rdev)
{
const struct pca9450_regulator_desc *desc = container_of_const(rdev->desc,
struct pca9450_regulator_desc, desc);
const struct pc9450_dvs_config *dvs = &desc->dvs;
int ret = 0, regval;
ret = regmap_read(rdev->regmap, dvs->mode_reg, &regval);
if (ret != 0) {
dev_err(&rdev->dev,
"Failed to get pca9450 buck mode: %d\n", ret);
return ret;
}
if ((regval & dvs->mode_mask) == dvs->mode_mask)
return REGULATOR_MODE_FAST;
return REGULATOR_MODE_NORMAL;
}
static struct pca9450_regulator_desc pca9450a_regulators[] = {
{
.desc = {
.name = "buck1",
.supply_name = "inb13",
.of_match = of_match_ptr("BUCK1"),
.regulators_node = of_match_ptr("regulators"),
.id = PCA9450_BUCK1,
.ops = &pca9450_dvs_buck_regulator_ops,
.type = REGULATOR_VOLTAGE,
.n_voltages = PCA9450_BUCK1_VOLTAGE_NUM,
.linear_ranges = pca9450_dvs_buck_volts,
.n_linear_ranges = ARRAY_SIZE(pca9450_dvs_buck_volts),
.vsel_reg = PCA9450_REG_BUCK1OUT_DVS0,
.vsel_mask = BUCK1OUT_DVS0_MASK,
.enable_reg = PCA9450_REG_BUCK1CTRL,
.enable_mask = BUCK1_ENMODE_MASK,
.ramp_reg = PCA9450_REG_BUCK1CTRL,
.ramp_mask = BUCK1_RAMP_MASK,
.ramp_delay_table = pca9450_dvs_buck_ramp_table,
.n_ramp_values = ARRAY_SIZE(pca9450_dvs_buck_ramp_table),
.enable_val = BUCK_ENMODE_ONREQ,
.owner = THIS_MODULE,
.of_parse_cb = pca9450_set_dvs_levels,
.of_map_mode = pca9450_map_mode,
},
.dvs = {
.run_reg = PCA9450_REG_BUCK1OUT_DVS0,
.run_mask = BUCK1OUT_DVS0_MASK,
.standby_reg = PCA9450_REG_BUCK1OUT_DVS1,
.standby_mask = BUCK1OUT_DVS1_MASK,
.mode_reg = PCA9450_REG_BUCK1CTRL,
.mode_mask = BUCK1_FPWM,
},
},
{
.desc = {
.name = "buck2",
.supply_name = "inb26",
.of_match = of_match_ptr("BUCK2"),
.regulators_node = of_match_ptr("regulators"),
.id = PCA9450_BUCK2,
.ops = &pca9450_dvs_buck_regulator_ops,
.type = REGULATOR_VOLTAGE,
.n_voltages = PCA9450_BUCK2_VOLTAGE_NUM,
.linear_ranges = pca9450_dvs_buck_volts,
.n_linear_ranges = ARRAY_SIZE(pca9450_dvs_buck_volts),
.vsel_reg = PCA9450_REG_BUCK2OUT_DVS0,
.vsel_mask = BUCK2OUT_DVS0_MASK,
.enable_reg = PCA9450_REG_BUCK2CTRL,
.enable_mask = BUCK2_ENMODE_MASK,
.enable_val = BUCK_ENMODE_ONREQ_STBYREQ,
.ramp_reg = PCA9450_REG_BUCK2CTRL,
.ramp_mask = BUCK2_RAMP_MASK,
.ramp_delay_table = pca9450_dvs_buck_ramp_table,
.n_ramp_values = ARRAY_SIZE(pca9450_dvs_buck_ramp_table),
.owner = THIS_MODULE,
.of_parse_cb = pca9450_set_dvs_levels,
.of_map_mode = pca9450_map_mode,
},
.dvs = {
.run_reg = PCA9450_REG_BUCK2OUT_DVS0,
.run_mask = BUCK2OUT_DVS0_MASK,
.standby_reg = PCA9450_REG_BUCK2OUT_DVS1,
.standby_mask = BUCK2OUT_DVS1_MASK,
.mode_reg = PCA9450_REG_BUCK2CTRL,
.mode_mask = BUCK2_FPWM,
},
},
{
.desc = {
.name = "buck3",
.supply_name = "inb13",
.of_match = of_match_ptr("BUCK3"),
.regulators_node = of_match_ptr("regulators"),
.id = PCA9450_BUCK3,
.ops = &pca9450_dvs_buck_regulator_ops,
.type = REGULATOR_VOLTAGE,
.n_voltages = PCA9450_BUCK3_VOLTAGE_NUM,
.linear_ranges = pca9450_dvs_buck_volts,
.n_linear_ranges = ARRAY_SIZE(pca9450_dvs_buck_volts),
.vsel_reg = PCA9450_REG_BUCK3OUT_DVS0,
.vsel_mask = BUCK3OUT_DVS0_MASK,
.enable_reg = PCA9450_REG_BUCK3CTRL,
.enable_mask = BUCK3_ENMODE_MASK,
.enable_val = BUCK_ENMODE_ONREQ,
.ramp_reg = PCA9450_REG_BUCK3CTRL,
.ramp_mask = BUCK3_RAMP_MASK,
.ramp_delay_table = pca9450_dvs_buck_ramp_table,
.n_ramp_values = ARRAY_SIZE(pca9450_dvs_buck_ramp_table),
.owner = THIS_MODULE,
.of_parse_cb = pca9450_set_dvs_levels,
.of_map_mode = pca9450_map_mode,
},
.dvs = {
.run_reg = PCA9450_REG_BUCK3OUT_DVS0,
.run_mask = BUCK3OUT_DVS0_MASK,
.standby_reg = PCA9450_REG_BUCK3OUT_DVS1,
.standby_mask = BUCK3OUT_DVS1_MASK,
.mode_reg = PCA9450_REG_BUCK3CTRL,
.mode_mask = BUCK3_FPWM,
},
},
{
.desc = {
.name = "buck4",
.supply_name = "inb45",
.of_match = of_match_ptr("BUCK4"),
.regulators_node = of_match_ptr("regulators"),
.id = PCA9450_BUCK4,
.ops = &pca9450_buck_regulator_ops,
.type = REGULATOR_VOLTAGE,
.n_voltages = PCA9450_BUCK4_VOLTAGE_NUM,
.linear_ranges = pca9450_buck_volts,
.n_linear_ranges = ARRAY_SIZE(pca9450_buck_volts),
.vsel_reg = PCA9450_REG_BUCK4OUT,
.vsel_mask = BUCK4OUT_MASK,
.enable_reg = PCA9450_REG_BUCK4CTRL,
.enable_mask = BUCK4_ENMODE_MASK,
.enable_val = BUCK_ENMODE_ONREQ,
.owner = THIS_MODULE,
.of_map_mode = pca9450_map_mode,
},
.dvs = {
.mode_reg = PCA9450_REG_BUCK4CTRL,
.mode_mask = BUCK4_FPWM,
},
},
{
.desc = {
.name = "buck5",
.supply_name = "inb45",
.of_match = of_match_ptr("BUCK5"),
.regulators_node = of_match_ptr("regulators"),
.id = PCA9450_BUCK5,
.ops = &pca9450_buck_regulator_ops,
.type = REGULATOR_VOLTAGE,
.n_voltages = PCA9450_BUCK5_VOLTAGE_NUM,
.linear_ranges = pca9450_buck_volts,
.n_linear_ranges = ARRAY_SIZE(pca9450_buck_volts),
.vsel_reg = PCA9450_REG_BUCK5OUT,
.vsel_mask = BUCK5OUT_MASK,
.enable_reg = PCA9450_REG_BUCK5CTRL,
.enable_mask = BUCK5_ENMODE_MASK,
.enable_val = BUCK_ENMODE_ONREQ,
.owner = THIS_MODULE,
.of_map_mode = pca9450_map_mode,
},
.dvs = {
.mode_reg = PCA9450_REG_BUCK5CTRL,
.mode_mask = BUCK5_FPWM,
},
},
{
.desc = {
.name = "buck6",
.supply_name = "inb26",
.of_match = of_match_ptr("BUCK6"),
.regulators_node = of_match_ptr("regulators"),
.id = PCA9450_BUCK6,
.ops = &pca9450_buck_regulator_ops,
.type = REGULATOR_VOLTAGE,
.n_voltages = PCA9450_BUCK6_VOLTAGE_NUM,
.linear_ranges = pca9450_buck_volts,
.n_linear_ranges = ARRAY_SIZE(pca9450_buck_volts),
.vsel_reg = PCA9450_REG_BUCK6OUT,
.vsel_mask = BUCK6OUT_MASK,
.enable_reg = PCA9450_REG_BUCK6CTRL,
.enable_mask = BUCK6_ENMODE_MASK,
.enable_val = BUCK_ENMODE_ONREQ,
.owner = THIS_MODULE,
.of_map_mode = pca9450_map_mode,
},
.dvs = {
.mode_reg = PCA9450_REG_BUCK6CTRL,
.mode_mask = BUCK6_FPWM,
},
},
{
.desc = {
.name = "ldo1",
.supply_name = "inl1",
.of_match = of_match_ptr("LDO1"),
.regulators_node = of_match_ptr("regulators"),
.id = PCA9450_LDO1,
.ops = &pca9450_ldo_regulator_ops,
.type = REGULATOR_VOLTAGE,
.n_voltages = PCA9450_LDO1_VOLTAGE_NUM,
.linear_ranges = pca9450_ldo1_volts,
.n_linear_ranges = ARRAY_SIZE(pca9450_ldo1_volts),
.vsel_reg = PCA9450_REG_LDO1CTRL,
.vsel_mask = LDO1OUT_MASK,
.enable_reg = PCA9450_REG_LDO1CTRL,
.enable_mask = LDO1_EN_MASK,
.owner = THIS_MODULE,
},
},
{
.desc = {
.name = "ldo2",
.supply_name = "inl1",
.of_match = of_match_ptr("LDO2"),
.regulators_node = of_match_ptr("regulators"),
.id = PCA9450_LDO2,
.ops = &pca9450_ldo_regulator_ops,
.type = REGULATOR_VOLTAGE,
.n_voltages = PCA9450_LDO2_VOLTAGE_NUM,
.linear_ranges = pca9450_ldo2_volts,
.n_linear_ranges = ARRAY_SIZE(pca9450_ldo2_volts),
.vsel_reg = PCA9450_REG_LDO2CTRL,
.vsel_mask = LDO2OUT_MASK,
.enable_reg = PCA9450_REG_LDO2CTRL,
.enable_mask = LDO2_EN_MASK,
.owner = THIS_MODULE,
},
},
{
.desc = {
.name = "ldo3",
.supply_name = "inl1",
.of_match = of_match_ptr("LDO3"),
.regulators_node = of_match_ptr("regulators"),
.id = PCA9450_LDO3,
.ops = &pca9450_ldo_regulator_ops,
.type = REGULATOR_VOLTAGE,
.n_voltages = PCA9450_LDO3_VOLTAGE_NUM,
.linear_ranges = pca9450_ldo34_volts,
.n_linear_ranges = ARRAY_SIZE(pca9450_ldo34_volts),
.vsel_reg = PCA9450_REG_LDO3CTRL,
.vsel_mask = LDO3OUT_MASK,
.enable_reg = PCA9450_REG_LDO3CTRL,
.enable_mask = LDO3_EN_MASK,
.owner = THIS_MODULE,
},
},
{
.desc = {
.name = "ldo4",
.supply_name = "inl1",
.of_match = of_match_ptr("LDO4"),
.regulators_node = of_match_ptr("regulators"),
.id = PCA9450_LDO4,
.ops = &pca9450_ldo_regulator_ops,
.type = REGULATOR_VOLTAGE,
.n_voltages = PCA9450_LDO4_VOLTAGE_NUM,
.linear_ranges = pca9450_ldo34_volts,
.n_linear_ranges = ARRAY_SIZE(pca9450_ldo34_volts),
.vsel_reg = PCA9450_REG_LDO4CTRL,
.vsel_mask = LDO4OUT_MASK,
.enable_reg = PCA9450_REG_LDO4CTRL,
.enable_mask = LDO4_EN_MASK,
.owner = THIS_MODULE,
},
},
{
.desc = {
.name = "ldo5",
.supply_name = "inl1",
.of_match = of_match_ptr("LDO5"),
.regulators_node = of_match_ptr("regulators"),
.id = PCA9450_LDO5,
.ops = &pca9450_ldo5_regulator_ops,
.type = REGULATOR_VOLTAGE,
.n_voltages = PCA9450_LDO5_VOLTAGE_NUM,
.linear_ranges = pca9450_ldo5_volts,
.n_linear_ranges = ARRAY_SIZE(pca9450_ldo5_volts),
.vsel_reg = PCA9450_REG_LDO5CTRL_H,
.vsel_mask = LDO5HOUT_MASK,
.enable_reg = PCA9450_REG_LDO5CTRL_L,
.enable_mask = LDO5H_EN_MASK,
.owner = THIS_MODULE,
},
},
};
/*
* Buck3 removed on PCA9450B and connected with Buck1 internal for dual phase
* on PCA9450C as no Buck3.
*/
static struct pca9450_regulator_desc pca9450bc_regulators[] = {
{
.desc = {
.name = "buck1",
.supply_name = "inb13",
.of_match = of_match_ptr("BUCK1"),
.regulators_node = of_match_ptr("regulators"),
.id = PCA9450_BUCK1,
.ops = &pca9450_dvs_buck_regulator_ops,
.type = REGULATOR_VOLTAGE,
.n_voltages = PCA9450_BUCK1_VOLTAGE_NUM,
.linear_ranges = pca9450_dvs_buck_volts,
.n_linear_ranges = ARRAY_SIZE(pca9450_dvs_buck_volts),
.vsel_reg = PCA9450_REG_BUCK1OUT_DVS0,
.vsel_mask = BUCK1OUT_DVS0_MASK,
.enable_reg = PCA9450_REG_BUCK1CTRL,
.enable_mask = BUCK1_ENMODE_MASK,
.enable_val = BUCK_ENMODE_ONREQ,
.ramp_reg = PCA9450_REG_BUCK1CTRL,
.ramp_mask = BUCK1_RAMP_MASK,
.ramp_delay_table = pca9450_dvs_buck_ramp_table,
.n_ramp_values = ARRAY_SIZE(pca9450_dvs_buck_ramp_table),
.owner = THIS_MODULE,
.of_parse_cb = pca9450_set_dvs_levels,
.of_map_mode = pca9450_map_mode,
},
.dvs = {
.run_reg = PCA9450_REG_BUCK1OUT_DVS0,
.run_mask = BUCK1OUT_DVS0_MASK,
.standby_reg = PCA9450_REG_BUCK1OUT_DVS1,
.standby_mask = BUCK1OUT_DVS1_MASK,
.mode_reg = PCA9450_REG_BUCK1CTRL,
.mode_mask = BUCK1_FPWM,
},
},
{
.desc = {
.name = "buck2",
.supply_name = "inb26",
.of_match = of_match_ptr("BUCK2"),
.regulators_node = of_match_ptr("regulators"),
.id = PCA9450_BUCK2,
.ops = &pca9450_dvs_buck_regulator_ops,
.type = REGULATOR_VOLTAGE,
.n_voltages = PCA9450_BUCK2_VOLTAGE_NUM,
.linear_ranges = pca9450_dvs_buck_volts,
.n_linear_ranges = ARRAY_SIZE(pca9450_dvs_buck_volts),
.vsel_reg = PCA9450_REG_BUCK2OUT_DVS0,
.vsel_mask = BUCK2OUT_DVS0_MASK,
.enable_reg = PCA9450_REG_BUCK2CTRL,
.enable_mask = BUCK2_ENMODE_MASK,
.enable_val = BUCK_ENMODE_ONREQ_STBYREQ,
.ramp_reg = PCA9450_REG_BUCK2CTRL,
.ramp_mask = BUCK2_RAMP_MASK,
.ramp_delay_table = pca9450_dvs_buck_ramp_table,
.n_ramp_values = ARRAY_SIZE(pca9450_dvs_buck_ramp_table),
.owner = THIS_MODULE,
.of_parse_cb = pca9450_set_dvs_levels,
.of_map_mode = pca9450_map_mode,
},
.dvs = {
.run_reg = PCA9450_REG_BUCK2OUT_DVS0,
.run_mask = BUCK2OUT_DVS0_MASK,
.standby_reg = PCA9450_REG_BUCK2OUT_DVS1,
.standby_mask = BUCK2OUT_DVS1_MASK,
.mode_reg = PCA9450_REG_BUCK2CTRL,
.mode_mask = BUCK2_FPWM,
},
},
{
.desc = {
.name = "buck4",
.supply_name = "inb45",
.of_match = of_match_ptr("BUCK4"),
.regulators_node = of_match_ptr("regulators"),
.id = PCA9450_BUCK4,
.ops = &pca9450_buck_regulator_ops,
.type = REGULATOR_VOLTAGE,
.n_voltages = PCA9450_BUCK4_VOLTAGE_NUM,
.linear_ranges = pca9450_buck_volts,
.n_linear_ranges = ARRAY_SIZE(pca9450_buck_volts),
.vsel_reg = PCA9450_REG_BUCK4OUT,
.vsel_mask = BUCK4OUT_MASK,
.enable_reg = PCA9450_REG_BUCK4CTRL,
.enable_mask = BUCK4_ENMODE_MASK,
.enable_val = BUCK_ENMODE_ONREQ,
.owner = THIS_MODULE,
.of_map_mode = pca9450_map_mode,
},
.dvs = {
.mode_reg = PCA9450_REG_BUCK4CTRL,
.mode_mask = BUCK4_FPWM,
},
},
{
.desc = {
.name = "buck5",
.supply_name = "inb45",
.of_match = of_match_ptr("BUCK5"),
.regulators_node = of_match_ptr("regulators"),
.id = PCA9450_BUCK5,
.ops = &pca9450_buck_regulator_ops,
.type = REGULATOR_VOLTAGE,
.n_voltages = PCA9450_BUCK5_VOLTAGE_NUM,
.linear_ranges = pca9450_buck_volts,
.n_linear_ranges = ARRAY_SIZE(pca9450_buck_volts),
.vsel_reg = PCA9450_REG_BUCK5OUT,
.vsel_mask = BUCK5OUT_MASK,
.enable_reg = PCA9450_REG_BUCK5CTRL,
.enable_mask = BUCK5_ENMODE_MASK,
.enable_val = BUCK_ENMODE_ONREQ,
.owner = THIS_MODULE,
.of_map_mode = pca9450_map_mode,
},
.dvs = {
.mode_reg = PCA9450_REG_BUCK5CTRL,
.mode_mask = BUCK5_FPWM,
},
},
{
.desc = {
.name = "buck6",
.supply_name = "inb26",
.of_match = of_match_ptr("BUCK6"),
.regulators_node = of_match_ptr("regulators"),
.id = PCA9450_BUCK6,
.ops = &pca9450_buck_regulator_ops,
.type = REGULATOR_VOLTAGE,
.n_voltages = PCA9450_BUCK6_VOLTAGE_NUM,
.linear_ranges = pca9450_buck_volts,
.n_linear_ranges = ARRAY_SIZE(pca9450_buck_volts),
.vsel_reg = PCA9450_REG_BUCK6OUT,
.vsel_mask = BUCK6OUT_MASK,
.enable_reg = PCA9450_REG_BUCK6CTRL,
.enable_mask = BUCK6_ENMODE_MASK,
.enable_val = BUCK_ENMODE_ONREQ,
.owner = THIS_MODULE,
.of_map_mode = pca9450_map_mode,
},
.dvs = {
.mode_reg = PCA9450_REG_BUCK6CTRL,
.mode_mask = BUCK6_FPWM,
},
},
{
.desc = {
.name = "ldo1",
.supply_name = "inl1",
.of_match = of_match_ptr("LDO1"),
.regulators_node = of_match_ptr("regulators"),
.id = PCA9450_LDO1,
.ops = &pca9450_ldo_regulator_ops,
.type = REGULATOR_VOLTAGE,
.n_voltages = PCA9450_LDO1_VOLTAGE_NUM,
.linear_ranges = pca9450_ldo1_volts,
.n_linear_ranges = ARRAY_SIZE(pca9450_ldo1_volts),
.vsel_reg = PCA9450_REG_LDO1CTRL,
.vsel_mask = LDO1OUT_MASK,
.enable_reg = PCA9450_REG_LDO1CTRL,
.enable_mask = LDO1_EN_MASK,
.owner = THIS_MODULE,
},
},
{
.desc = {
.name = "ldo2",
.supply_name = "inl1",
.of_match = of_match_ptr("LDO2"),
.regulators_node = of_match_ptr("regulators"),
.id = PCA9450_LDO2,
.ops = &pca9450_ldo_regulator_ops,
.type = REGULATOR_VOLTAGE,
.n_voltages = PCA9450_LDO2_VOLTAGE_NUM,
.linear_ranges = pca9450_ldo2_volts,
.n_linear_ranges = ARRAY_SIZE(pca9450_ldo2_volts),
.vsel_reg = PCA9450_REG_LDO2CTRL,
.vsel_mask = LDO2OUT_MASK,
.enable_reg = PCA9450_REG_LDO2CTRL,
.enable_mask = LDO2_EN_MASK,
.owner = THIS_MODULE,
},
},
{
.desc = {
.name = "ldo3",
.supply_name = "inl1",
.of_match = of_match_ptr("LDO3"),
.regulators_node = of_match_ptr("regulators"),
.id = PCA9450_LDO3,
.ops = &pca9450_ldo_regulator_ops,
.type = REGULATOR_VOLTAGE,
.n_voltages = PCA9450_LDO3_VOLTAGE_NUM,
.linear_ranges = pca9450_ldo34_volts,
.n_linear_ranges = ARRAY_SIZE(pca9450_ldo34_volts),
.vsel_reg = PCA9450_REG_LDO3CTRL,
.vsel_mask = LDO3OUT_MASK,
.enable_reg = PCA9450_REG_LDO3CTRL,
.enable_mask = LDO3_EN_MASK,
.owner = THIS_MODULE,
},
},
{
.desc = {
.name = "ldo4",
.supply_name = "inl1",
.of_match = of_match_ptr("LDO4"),
.regulators_node = of_match_ptr("regulators"),
.id = PCA9450_LDO4,
.ops = &pca9450_ldo_regulator_ops,
.type = REGULATOR_VOLTAGE,
.n_voltages = PCA9450_LDO4_VOLTAGE_NUM,
.linear_ranges = pca9450_ldo34_volts,
.n_linear_ranges = ARRAY_SIZE(pca9450_ldo34_volts),
.vsel_reg = PCA9450_REG_LDO4CTRL,
.vsel_mask = LDO4OUT_MASK,
.enable_reg = PCA9450_REG_LDO4CTRL,
.enable_mask = LDO4_EN_MASK,
.owner = THIS_MODULE,
},
},
{
.desc = {
.name = "ldo5",
.supply_name = "inl1",
.of_match = of_match_ptr("LDO5"),
.regulators_node = of_match_ptr("regulators"),
.id = PCA9450_LDO5,
.ops = &pca9450_ldo5_regulator_ops,
.type = REGULATOR_VOLTAGE,
.n_voltages = PCA9450_LDO5_VOLTAGE_NUM,
.linear_ranges = pca9450_ldo5_volts,
.n_linear_ranges = ARRAY_SIZE(pca9450_ldo5_volts),
.vsel_reg = PCA9450_REG_LDO5CTRL_H,
.vsel_mask = LDO5HOUT_MASK,
.enable_reg = PCA9450_REG_LDO5CTRL_L,
.enable_mask = LDO5H_EN_MASK,
.owner = THIS_MODULE,
},
},
};
static struct pca9450_regulator_desc pca9451a_regulators[] = {
{
.desc = {
.name = "buck1",
.supply_name = "inb13",
.of_match = of_match_ptr("BUCK1"),
.regulators_node = of_match_ptr("regulators"),
.id = PCA9450_BUCK1,
.ops = &pca9450_dvs_buck_regulator_ops,
.type = REGULATOR_VOLTAGE,
.n_voltages = PCA9450_BUCK1_VOLTAGE_NUM,
.linear_ranges = pca9451a_dvs_buck_volts,
.n_linear_ranges = ARRAY_SIZE(pca9451a_dvs_buck_volts),
.vsel_reg = PCA9450_REG_BUCK1OUT_DVS0,
.vsel_mask = BUCK1OUT_DVS0_MASK,
.enable_reg = PCA9450_REG_BUCK1CTRL,
.enable_mask = BUCK1_ENMODE_MASK,
.enable_val = BUCK_ENMODE_ONREQ,
.ramp_mask = BUCK1_RAMP_MASK,
.ramp_delay_table = pca9450_dvs_buck_ramp_table,
.n_ramp_values = ARRAY_SIZE(pca9450_dvs_buck_ramp_table),
.owner = THIS_MODULE,
.of_parse_cb = pca9450_set_dvs_levels,
.of_map_mode = pca9450_map_mode,
},
.dvs = {
.run_reg = PCA9450_REG_BUCK1OUT_DVS0,
.run_mask = BUCK1OUT_DVS0_MASK,
.standby_reg = PCA9450_REG_BUCK1OUT_DVS1,
.standby_mask = BUCK1OUT_DVS1_MASK,
.mode_reg = PCA9450_REG_BUCK1CTRL,
.mode_mask = BUCK1_FPWM,
},
},
{
.desc = {
.name = "buck2",
.supply_name = "inb26",
.of_match = of_match_ptr("BUCK2"),
.regulators_node = of_match_ptr("regulators"),
.id = PCA9450_BUCK2,
.ops = &pca9450_dvs_buck_regulator_ops,
.type = REGULATOR_VOLTAGE,
.n_voltages = PCA9450_BUCK2_VOLTAGE_NUM,
.linear_ranges = pca9450_dvs_buck_volts,
.n_linear_ranges = ARRAY_SIZE(pca9450_dvs_buck_volts),
.vsel_reg = PCA9450_REG_BUCK2OUT_DVS0,
.vsel_mask = BUCK2OUT_DVS0_MASK,
.enable_reg = PCA9450_REG_BUCK2CTRL,
.enable_mask = BUCK2_ENMODE_MASK,
.enable_val = BUCK_ENMODE_ONREQ_STBYREQ,
.ramp_mask = BUCK2_RAMP_MASK,
.ramp_delay_table = pca9450_dvs_buck_ramp_table,
.n_ramp_values = ARRAY_SIZE(pca9450_dvs_buck_ramp_table),
.owner = THIS_MODULE,
.of_parse_cb = pca9450_set_dvs_levels,
.of_map_mode = pca9450_map_mode,
},
.dvs = {
.run_reg = PCA9450_REG_BUCK2OUT_DVS0,
.run_mask = BUCK2OUT_DVS0_MASK,
.standby_reg = PCA9450_REG_BUCK2OUT_DVS1,
.standby_mask = BUCK2OUT_DVS1_MASK,
.mode_reg = PCA9450_REG_BUCK2CTRL,
.mode_mask = BUCK2_FPWM,
},
},
{
.desc = {
.name = "buck4",
.supply_name = "inb45",
.of_match = of_match_ptr("BUCK4"),
.regulators_node = of_match_ptr("regulators"),
.id = PCA9450_BUCK4,
.ops = &pca9450_buck_regulator_ops,
.type = REGULATOR_VOLTAGE,
.n_voltages = PCA9450_BUCK4_VOLTAGE_NUM,
.linear_ranges = pca9450_buck_volts,
.n_linear_ranges = ARRAY_SIZE(pca9450_buck_volts),
.vsel_reg = PCA9450_REG_BUCK4OUT,
.vsel_mask = BUCK4OUT_MASK,
.enable_reg = PCA9450_REG_BUCK4CTRL,
.enable_mask = BUCK4_ENMODE_MASK,
.enable_val = BUCK_ENMODE_ONREQ,
.owner = THIS_MODULE,
.of_map_mode = pca9450_map_mode,
},
.dvs = {
.mode_reg = PCA9450_REG_BUCK4CTRL,
.mode_mask = BUCK4_FPWM,
},
},
{
.desc = {
.name = "buck5",
.supply_name = "inb45",
.of_match = of_match_ptr("BUCK5"),
.regulators_node = of_match_ptr("regulators"),
.id = PCA9450_BUCK5,
.ops = &pca9450_buck_regulator_ops,
.type = REGULATOR_VOLTAGE,
.n_voltages = PCA9450_BUCK5_VOLTAGE_NUM,
.linear_ranges = pca9450_buck_volts,
.n_linear_ranges = ARRAY_SIZE(pca9450_buck_volts),
.vsel_reg = PCA9450_REG_BUCK5OUT,
.vsel_mask = BUCK5OUT_MASK,
.enable_reg = PCA9450_REG_BUCK5CTRL,
.enable_mask = BUCK5_ENMODE_MASK,
.enable_val = BUCK_ENMODE_ONREQ,
.owner = THIS_MODULE,
.of_map_mode = pca9450_map_mode,
},
.dvs = {
.mode_reg = PCA9450_REG_BUCK5CTRL,
.mode_mask = BUCK5_FPWM,
},
},
{
.desc = {
.name = "buck6",
.supply_name = "inb26",
.of_match = of_match_ptr("BUCK6"),
.regulators_node = of_match_ptr("regulators"),
.id = PCA9450_BUCK6,
.ops = &pca9450_buck_regulator_ops,
.type = REGULATOR_VOLTAGE,
.n_voltages = PCA9450_BUCK6_VOLTAGE_NUM,
.linear_ranges = pca9450_buck_volts,
.n_linear_ranges = ARRAY_SIZE(pca9450_buck_volts),
.vsel_reg = PCA9450_REG_BUCK6OUT,
.vsel_mask = BUCK6OUT_MASK,
.enable_reg = PCA9450_REG_BUCK6CTRL,
.enable_mask = BUCK6_ENMODE_MASK,
.enable_val = BUCK_ENMODE_ONREQ,
.owner = THIS_MODULE,
.of_map_mode = pca9450_map_mode,
},
.dvs = {
.mode_reg = PCA9450_REG_BUCK6CTRL,
.mode_mask = BUCK6_FPWM,
},
},
{
.desc = {
.name = "ldo1",
.supply_name = "inl1",
.of_match = of_match_ptr("LDO1"),
.regulators_node = of_match_ptr("regulators"),
.id = PCA9450_LDO1,
.ops = &pca9450_ldo_regulator_ops,
.type = REGULATOR_VOLTAGE,
.n_voltages = PCA9450_LDO1_VOLTAGE_NUM,
.linear_ranges = pca9450_ldo1_volts,
.n_linear_ranges = ARRAY_SIZE(pca9450_ldo1_volts),
.vsel_reg = PCA9450_REG_LDO1CTRL,
.vsel_mask = LDO1OUT_MASK,
.enable_reg = PCA9450_REG_LDO1CTRL,
.enable_mask = LDO1_EN_MASK,
.owner = THIS_MODULE,
},
},
{
.desc = {
.name = "ldo3",
.supply_name = "inl1",
.of_match = of_match_ptr("LDO3"),
.regulators_node = of_match_ptr("regulators"),
.id = PCA9450_LDO3,
.ops = &pca9450_ldo_regulator_ops,
.type = REGULATOR_VOLTAGE,
.n_voltages = PCA9450_LDO3_VOLTAGE_NUM,
.linear_ranges = pca9450_ldo34_volts,
.n_linear_ranges = ARRAY_SIZE(pca9450_ldo34_volts),
.vsel_reg = PCA9450_REG_LDO3CTRL,
.vsel_mask = LDO3OUT_MASK,
.enable_reg = PCA9450_REG_LDO3CTRL,
.enable_mask = LDO3_EN_MASK,
.owner = THIS_MODULE,
},
},
{
.desc = {
.name = "ldo4",
.supply_name = "inl1",
.of_match = of_match_ptr("LDO4"),
.regulators_node = of_match_ptr("regulators"),
.id = PCA9450_LDO4,
.ops = &pca9450_ldo_regulator_ops,
.type = REGULATOR_VOLTAGE,
.n_voltages = PCA9450_LDO4_VOLTAGE_NUM,
.linear_ranges = pca9450_ldo34_volts,
.n_linear_ranges = ARRAY_SIZE(pca9450_ldo34_volts),
.vsel_reg = PCA9450_REG_LDO4CTRL,
.vsel_mask = LDO4OUT_MASK,
.enable_reg = PCA9450_REG_LDO4CTRL,
.enable_mask = LDO4_EN_MASK,
.owner = THIS_MODULE,
},
},
{
.desc = {
.name = "ldo5",
.supply_name = "inl1",
.of_match = of_match_ptr("LDO5"),
.regulators_node = of_match_ptr("regulators"),
.id = PCA9450_LDO5,
.ops = &pca9450_ldo5_regulator_ops,
.type = REGULATOR_VOLTAGE,
.n_voltages = PCA9450_LDO5_VOLTAGE_NUM,
.linear_ranges = pca9450_ldo5_volts,
.n_linear_ranges = ARRAY_SIZE(pca9450_ldo5_volts),
.vsel_reg = PCA9450_REG_LDO5CTRL_H,
.vsel_mask = LDO5HOUT_MASK,
.enable_reg = PCA9450_REG_LDO5CTRL_L,
.enable_mask = LDO5H_EN_MASK,
.owner = THIS_MODULE,
},
},
};
static irqreturn_t pca9450_irq_handler(int irq, void *data)
{
struct pca9450 *pca9450 = data;
struct regmap *regmap = pca9450->regmap;
unsigned int status;
int ret;
ret = regmap_read(regmap, PCA9450_REG_INT1, &status);
if (ret < 0) {
dev_err(pca9450->dev,
"Failed to read INT1(%d)\n", ret);
return IRQ_NONE;
}
if (status & IRQ_PWRON)
dev_warn(pca9450->dev, "PWRON interrupt.\n");
if (status & IRQ_WDOGB)
dev_warn(pca9450->dev, "WDOGB interrupt.\n");
if (status & IRQ_VR_FLT1)
dev_warn(pca9450->dev, "VRFLT1 interrupt.\n");
if (status & IRQ_VR_FLT2)
dev_warn(pca9450->dev, "VRFLT2 interrupt.\n");
if (status & IRQ_LOWVSYS)
dev_warn(pca9450->dev, "LOWVSYS interrupt.\n");
if (status & IRQ_THERM_105)
dev_warn(pca9450->dev, "IRQ_THERM_105 interrupt.\n");
if (status & IRQ_THERM_125)
dev_warn(pca9450->dev, "IRQ_THERM_125 interrupt.\n");
return IRQ_HANDLED;
}
static int pca9450_i2c_restart_handler(struct sys_off_data *data)
{
struct pca9450 *pca9450 = data->cb_data;
struct i2c_client *i2c = container_of(pca9450->dev, struct i2c_client, dev);
dev_dbg(&i2c->dev, "Restarting device..\n");
if (i2c_smbus_write_byte_data(i2c, PCA9450_REG_SWRST, SW_RST_COMMAND) == 0) {
/* tRESTART is 250ms, so 300 should be enough to make sure it happened */
mdelay(300);
/* When we get here, the PMIC didn't power cycle for some reason. so warn.*/
dev_warn(&i2c->dev, "Device didn't respond to restart command\n");
} else {
dev_err(&i2c->dev, "Restart command failed\n");
}
return 0;
}
static int pca9450_of_init(struct pca9450 *pca9450)
{
struct i2c_client *i2c = container_of(pca9450->dev, struct i2c_client, dev);
int ret;
unsigned int val;
unsigned int reset_ctrl;
unsigned int rstb_deb_ctrl;
unsigned int t_on_deb, t_off_deb;
unsigned int t_on_step, t_off_step;
unsigned int t_restart;
if (of_property_read_bool(i2c->dev.of_node, "nxp,wdog_b-warm-reset"))
reset_ctrl = WDOG_B_CFG_WARM;
else
reset_ctrl = WDOG_B_CFG_COLD_LDO12;
/* Set reset behavior on assertion of WDOG_B signal */
ret = regmap_update_bits(pca9450->regmap, PCA9450_REG_RESET_CTRL,
WDOG_B_CFG_MASK, reset_ctrl);
if (ret)
return dev_err_probe(&i2c->dev, ret, "Failed to set WDOG_B reset behavior\n");
ret = of_property_read_u32(i2c->dev.of_node, "npx,pmic-rst-b-debounce-ms", &val);
if (ret == -EINVAL)
rstb_deb_ctrl = T_PMIC_RST_DEB_50MS;
else if (ret)
return ret;
else {
switch (val) {
case 10: rstb_deb_ctrl = T_PMIC_RST_DEB_10MS; break;
case 50: rstb_deb_ctrl = T_PMIC_RST_DEB_50MS; break;
case 100: rstb_deb_ctrl = T_PMIC_RST_DEB_100MS; break;
case 500: rstb_deb_ctrl = T_PMIC_RST_DEB_500MS; break;
case 1000: rstb_deb_ctrl = T_PMIC_RST_DEB_1S; break;
case 2000: rstb_deb_ctrl = T_PMIC_RST_DEB_2S; break;
case 4000: rstb_deb_ctrl = T_PMIC_RST_DEB_4S; break;
case 8000: rstb_deb_ctrl = T_PMIC_RST_DEB_8S; break;
default: return -EINVAL;
}
}
ret = regmap_update_bits(pca9450->regmap, PCA9450_REG_RESET_CTRL,
T_PMIC_RST_DEB_MASK, rstb_deb_ctrl);
if (ret)
return dev_err_probe(&i2c->dev, ret, "Failed to set PMIC_RST_B debounce time\n");
ret = of_property_read_u32(i2c->dev.of_node, "nxp,pmic-on-req-on-debounce-us", &val);
if (ret == -EINVAL)
t_on_deb = T_ON_DEB_20MS;
else if (ret)
return ret;
else {
switch (val) {
case 120: t_on_deb = T_ON_DEB_120US; break;
case 20000: t_on_deb = T_ON_DEB_20MS; break;
case 100000: t_on_deb = T_ON_DEB_100MS; break;
case 750000: t_on_deb = T_ON_DEB_750MS; break;
default: return -EINVAL;
}
}
ret = of_property_read_u32(i2c->dev.of_node, "nxp,pmic-on-req-off-debounce-us", &val);
if (ret == -EINVAL)
t_off_deb = pca9450->default_t_off_deb;
else if (ret)
return ret;
else {
switch (val) {
case 120: t_off_deb = T_OFF_DEB_120US; break;
case 2000: t_off_deb = T_OFF_DEB_2MS; break;
default: return -EINVAL;
}
}
ret = of_property_read_u32(i2c->dev.of_node, "nxp,power-on-step-ms", &val);
if (ret == -EINVAL)
t_on_step = T_ON_STEP_2MS;
else if (ret)
return ret;
else {
switch (val) {
case 1: t_on_step = T_ON_STEP_1MS; break;
case 2: t_on_step = T_ON_STEP_2MS; break;
case 4: t_on_step = T_ON_STEP_4MS; break;
case 8: t_on_step = T_ON_STEP_8MS; break;
default: return -EINVAL;
}
}
ret = of_property_read_u32(i2c->dev.of_node, "nxp,power-down-step-ms", &val);
if (ret == -EINVAL)
t_off_step = T_OFF_STEP_8MS;
else if (ret)
return ret;
else {
switch (val) {
case 2: t_off_step = T_OFF_STEP_2MS; break;
case 4: t_off_step = T_OFF_STEP_4MS; break;
case 8: t_off_step = T_OFF_STEP_8MS; break;
case 16: t_off_step = T_OFF_STEP_16MS; break;
default: return -EINVAL;
}
}
ret = of_property_read_u32(i2c->dev.of_node, "nxp,restart-ms", &val);
if (ret == -EINVAL)
t_restart = T_RESTART_250MS;
else if (ret)
return ret;
else {
switch (val) {
case 250: t_restart = T_RESTART_250MS; break;
case 500: t_restart = T_RESTART_500MS; break;
default: return -EINVAL;
}
}
ret = regmap_update_bits(pca9450->regmap, PCA9450_REG_PWRCTRL,
T_ON_DEB_MASK | T_OFF_DEB_MASK | T_ON_STEP_MASK |
T_OFF_STEP_MASK | T_RESTART_MASK,
t_on_deb | t_off_deb | t_on_step |
t_off_step | t_restart);
if (ret)
return dev_err_probe(&i2c->dev, ret,
"Failed to set PWR_CTRL debounce configuration\n");
if (of_property_read_bool(i2c->dev.of_node, "nxp,i2c-lt-enable")) {
/* Enable I2C Level Translator */
ret = regmap_update_bits(pca9450->regmap, PCA9450_REG_CONFIG2,
I2C_LT_MASK, I2C_LT_ON_STANDBY_RUN);
if (ret)
return dev_err_probe(&i2c->dev, ret,
"Failed to enable I2C level translator\n");
}
return 0;
}
static int pca9450_i2c_probe(struct i2c_client *i2c)
{
enum pca9450_chip_type type = (unsigned int)(uintptr_t)
of_device_get_match_data(&i2c->dev);
const struct pca9450_regulator_desc *regulator_desc;
struct regulator_config config = { };
struct regulator_dev *ldo5;
struct pca9450 *pca9450;
unsigned int device_id, i;
const char *type_name;
int ret;
pca9450 = devm_kzalloc(&i2c->dev, sizeof(struct pca9450), GFP_KERNEL);
if (!pca9450)
return -ENOMEM;
switch (type) {
case PCA9450_TYPE_PCA9450A:
regulator_desc = pca9450a_regulators;
pca9450->rcnt = ARRAY_SIZE(pca9450a_regulators);
pca9450->default_t_off_deb = T_OFF_DEB_120US;
type_name = "pca9450a";
break;
case PCA9450_TYPE_PCA9450BC:
regulator_desc = pca9450bc_regulators;
pca9450->rcnt = ARRAY_SIZE(pca9450bc_regulators);
pca9450->default_t_off_deb = T_OFF_DEB_120US;
type_name = "pca9450bc";
break;
case PCA9450_TYPE_PCA9451A:
regulator_desc = pca9451a_regulators;
pca9450->rcnt = ARRAY_SIZE(pca9451a_regulators);
pca9450->default_t_off_deb = T_OFF_DEB_2MS;
type_name = "pca9451a";
break;
case PCA9450_TYPE_PCA9452:
regulator_desc = pca9451a_regulators;
pca9450->rcnt = ARRAY_SIZE(pca9451a_regulators);
pca9450->default_t_off_deb = T_OFF_DEB_2MS;
type_name = "pca9452";
break;
default:
dev_err(&i2c->dev, "Unknown device type");
return -EINVAL;
}
pca9450->irq = i2c->irq;
pca9450->type = type;
pca9450->dev = &i2c->dev;
dev_set_drvdata(&i2c->dev, pca9450);
pca9450->regmap = devm_regmap_init_i2c(i2c,
&pca9450_regmap_config);
if (IS_ERR(pca9450->regmap))
return dev_err_probe(&i2c->dev, PTR_ERR(pca9450->regmap),
"regmap initialization failed\n");
ret = regmap_read(pca9450->regmap, PCA9450_REG_DEV_ID, &device_id);
if (ret)
return dev_err_probe(&i2c->dev, ret, "Read device id error\n");
/* Check your board and dts for match the right pmic */
if (((device_id >> 4) != 0x1 && type == PCA9450_TYPE_PCA9450A) ||
((device_id >> 4) != 0x3 && type == PCA9450_TYPE_PCA9450BC) ||
((device_id >> 4) != 0x9 && type == PCA9450_TYPE_PCA9451A) ||
((device_id >> 4) != 0x9 && type == PCA9450_TYPE_PCA9452))
return dev_err_probe(&i2c->dev, -EINVAL,
"Device id(%x) mismatched\n", device_id >> 4);
for (i = 0; i < pca9450->rcnt; i++) {
const struct regulator_desc *desc;
struct regulator_dev *rdev;
const struct pca9450_regulator_desc *r;
r = &regulator_desc[i];
desc = &r->desc;
if (type == PCA9450_TYPE_PCA9451A && !strcmp(desc->name, "ldo3"))
continue;
config.regmap = pca9450->regmap;
config.dev = pca9450->dev;
config.driver_data = pca9450;
rdev = devm_regulator_register(pca9450->dev, desc, &config);
if (IS_ERR(rdev))
return dev_err_probe(pca9450->dev, PTR_ERR(rdev),
"Failed to register regulator(%s)\n", desc->name);
if (!strcmp(desc->name, "ldo5"))
ldo5 = rdev;
}
if (pca9450->irq) {
ret = devm_request_threaded_irq(pca9450->dev, pca9450->irq, NULL,
pca9450_irq_handler,
(IRQF_TRIGGER_LOW | IRQF_ONESHOT),
"pca9450-irq", pca9450);
if (ret != 0)
return dev_err_probe(pca9450->dev, ret, "Failed to request IRQ: %d\n",
pca9450->irq);
/* Unmask all interrupt except PWRON/WDOG/RSVD */
ret = regmap_update_bits(pca9450->regmap, PCA9450_REG_INT1_MSK,
IRQ_VR_FLT1 | IRQ_VR_FLT2 | IRQ_LOWVSYS |
IRQ_THERM_105 | IRQ_THERM_125,
IRQ_PWRON | IRQ_WDOGB | IRQ_RSVD);
if (ret)
return dev_err_probe(&i2c->dev, ret, "Unmask irq error\n");
}
/* Clear PRESET_EN bit in BUCK123_DVS to use DVS registers */
ret = regmap_clear_bits(pca9450->regmap, PCA9450_REG_BUCK123_DVS,
BUCK123_PRESET_EN);
if (ret)
return dev_err_probe(&i2c->dev, ret, "Failed to clear PRESET_EN bit\n");
ret = pca9450_of_init(pca9450);
if (ret)
return dev_err_probe(&i2c->dev, ret, "Unable to parse OF data\n");
/*
* For LDO5 we need to be able to check the status of the SD_VSEL input in
* order to know which control register is used. Most boards connect SD_VSEL
* to the VSELECT signal, so we can use the GPIO that is internally routed
* to this signal (if SION bit is set in IOMUX).
*/
pca9450->sd_vsel_gpio = gpiod_get_optional(&ldo5->dev, "sd-vsel", GPIOD_IN);
if (IS_ERR(pca9450->sd_vsel_gpio))
return dev_err_probe(&i2c->dev, PTR_ERR(pca9450->sd_vsel_gpio),
"Failed to get SD_VSEL GPIO\n");
pca9450->sd_vsel_fixed_low =
of_property_read_bool(ldo5->dev.of_node, "nxp,sd-vsel-fixed-low");
if (devm_register_sys_off_handler(&i2c->dev, SYS_OFF_MODE_RESTART,
PCA9450_RESTART_HANDLER_PRIORITY,
pca9450_i2c_restart_handler, pca9450))
dev_warn(&i2c->dev, "Failed to register restart handler\n");
dev_info(&i2c->dev, "%s probed.\n", type_name);
return 0;
}
static const struct of_device_id pca9450_of_match[] = {
{
.compatible = "nxp,pca9450a",
.data = (void *)PCA9450_TYPE_PCA9450A,
},
{
.compatible = "nxp,pca9450b",
.data = (void *)PCA9450_TYPE_PCA9450BC,
},
{
.compatible = "nxp,pca9450c",
.data = (void *)PCA9450_TYPE_PCA9450BC,
},
{
.compatible = "nxp,pca9451a",
.data = (void *)PCA9450_TYPE_PCA9451A,
},
{
.compatible = "nxp,pca9452",
.data = (void *)PCA9450_TYPE_PCA9452,
},
{ }
};
MODULE_DEVICE_TABLE(of, pca9450_of_match);
static struct i2c_driver pca9450_i2c_driver = {
.driver = {
.name = "nxp-pca9450",
.probe_type = PROBE_PREFER_ASYNCHRONOUS,
.of_match_table = pca9450_of_match,
},
.probe = pca9450_i2c_probe,
};
module_i2c_driver(pca9450_i2c_driver);
MODULE_AUTHOR("Robin Gong <yibin.gong@nxp.com>");
MODULE_DESCRIPTION("NXP PCA9450 Power Management IC driver");
MODULE_LICENSE("GPL");