Re: [PATCH v2 1/4] regulator: pca9450: add pca9450 pmic driver

From: Frieder Schrempf
Date: Mon Jul 06 2020 - 04:02:49 EST

On 03.07.20 18:19, Robin Gong wrote:
Add NXP pca9450 pmic driver.

Signed-off-by: Robin Gong <yibin.gong@xxxxxxx>

Reviewed-by: Frieder Schrempf <frieder.schrempf@xxxxxxxxxx>

---
drivers/regulator/Kconfig | 8 +
drivers/regulator/Makefile | 1 +
drivers/regulator/pca9450-regulator.c | 843 ++++++++++++++++++++++++++++++++++
include/linux/regulator/pca9450.h | 219 +++++++++
4 files changed, 1071 insertions(+)
create mode 100644 drivers/regulator/pca9450-regulator.c
create mode 100644 include/linux/regulator/pca9450.h

diff --git a/drivers/regulator/Kconfig b/drivers/regulator/Kconfig
index f60eeaa..f992a17 100644
--- a/drivers/regulator/Kconfig
+++ b/drivers/regulator/Kconfig
@@ -740,6 +740,14 @@ config REGULATOR_PBIAS
This driver provides support for OMAP pbias modelled
regulators.
+config REGULATOR_PCA9450
+ tristate "NXP PCA9450A/PCA9450B/PCA9450C regulator driver"
+ depends on I2C
+ select REGMAP_I2C
+ help
+ Say y here to support the NXP PCA9450A/PCA9450B/PCA9450C PMIC
+ regulator driver.
+
config REGULATOR_PCAP
tristate "Motorola PCAP2 regulator driver"
depends on EZX_PCAP
diff --git a/drivers/regulator/Makefile b/drivers/regulator/Makefile
index 5ce7350..ff524922 100644
--- a/drivers/regulator/Makefile
+++ b/drivers/regulator/Makefile
@@ -94,6 +94,7 @@ obj-$(CONFIG_REGULATOR_QCOM_RPMH) += qcom-rpmh-regulator.o
obj-$(CONFIG_REGULATOR_QCOM_SMD_RPM) += qcom_smd-regulator.o
obj-$(CONFIG_REGULATOR_QCOM_SPMI) += qcom_spmi-regulator.o
obj-$(CONFIG_REGULATOR_PALMAS) += palmas-regulator.o
+obj-$(CONFIG_REGULATOR_PCA9450) += pca9450-regulator.o
obj-$(CONFIG_REGULATOR_PFUZE100) += pfuze100-regulator.o
obj-$(CONFIG_REGULATOR_PV88060) += pv88060-regulator.o
obj-$(CONFIG_REGULATOR_PV88080) += pv88080-regulator.o
diff --git a/drivers/regulator/pca9450-regulator.c b/drivers/regulator/pca9450-regulator.c
new file mode 100644
index 00000000..0225045
--- /dev/null
+++ b/drivers/regulator/pca9450-regulator.c
@@ -0,0 +1,843 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright 2020 NXP.
+ * NXP PCA9450 pmic driver
+ */
+
+#include <linux/err.h>
+#include <linux/i2c.h>
+#include <linux/interrupt.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_device.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>
+
+struct pc9450_dvs_config {
+ unsigned int run_reg; /* dvs0 */
+ unsigned int run_mask;
+ unsigned int standby_reg; /* dvs1 */
+ unsigned int standby_mask;
+};
+
+struct pca9450_regulator_desc {
+ struct regulator_desc desc;
+ const struct pc9450_dvs_config dvs;
+};
+
+struct pca9450 {
+ struct device *dev;
+ struct regmap *regmap;
+ enum pca9450_chip_type type;
+ unsigned int rcnt;
+ int irq;
+};
+
+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_RBTREE,
+};
+
+/*
+ * 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_dvs_set_ramp_delay(struct regulator_dev *rdev,
+ int ramp_delay)
+{
+ int id = rdev_get_id(rdev);
+ unsigned int ramp_value;
+
+ 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(rdev->regmap, PCA9450_REG_BUCK1CTRL + id * 3,
+ BUCK1_RAMP_MASK, ramp_value << 6);
+}
+
+static 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 = pca9450_dvs_set_ramp_delay,
+};
+
+static 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,
+};
+
+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,
+};
+
+/*
+ * 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),
+};
+
+/*
+ * 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;
+ }
+ }
+
+ return ret;
+}
+
+static int pca9450_set_dvs_levels(struct device_node *np,
+ const struct regulator_desc *desc,
+ struct regulator_config *cfg)
+{
+ struct pca9450_regulator_desc *data = container_of(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 const struct pca9450_regulator_desc pca9450a_regulators[] = {
+ {
+ .desc = {
+ .name = "buck1",
+ .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,
+ .owner = THIS_MODULE,
+ .of_parse_cb = pca9450_set_dvs_levels,
+ },
+ .dvs = {
+ .run_reg = PCA9450_REG_BUCK1OUT_DVS0,
+ .run_mask = BUCK1OUT_DVS0_MASK,
+ .standby_reg = PCA9450_REG_BUCK1OUT_DVS1,
+ .standby_mask = BUCK1OUT_DVS1_MASK,
+ },
+ },
+ {
+ .desc = {
+ .name = "buck2",
+ .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 = BUCK1_ENMODE_MASK,
+ .owner = THIS_MODULE,
+ .of_parse_cb = pca9450_set_dvs_levels,
+ },
+ .dvs = {
+ .run_reg = PCA9450_REG_BUCK2OUT_DVS0,
+ .run_mask = BUCK2OUT_DVS0_MASK,
+ .standby_reg = PCA9450_REG_BUCK2OUT_DVS1,
+ .standby_mask = BUCK2OUT_DVS1_MASK,
+ },
+ },
+ {
+ .desc = {
+ .name = "buck3",
+ .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,
+ .owner = THIS_MODULE,
+ .of_parse_cb = pca9450_set_dvs_levels,
+ },
+ .dvs = {
+ .run_reg = PCA9450_REG_BUCK3OUT_DVS0,
+ .run_mask = BUCK3OUT_DVS0_MASK,
+ .standby_reg = PCA9450_REG_BUCK3OUT_DVS1,
+ .standby_mask = BUCK3OUT_DVS1_MASK,
+ },
+ },
+ {
+ .desc = {
+ .name = "buck4",
+ .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,
+ .owner = THIS_MODULE,
+ },
+ },
+ {
+ .desc = {
+ .name = "buck5",
+ .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,
+ .owner = THIS_MODULE,
+ },
+ },
+ {
+ .desc = {
+ .name = "buck6",
+ .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,
+ .owner = THIS_MODULE,
+ },
+ },
+ {
+ .desc = {
+ .name = "ldo1",
+ .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",
+ .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",
+ .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",
+ .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",
+ .of_match = of_match_ptr("LDO5"),
+ .regulators_node = of_match_ptr("regulators"),
+ .id = PCA9450_LDO5,
+ .ops = &pca9450_ldo_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_H,
+ .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 const struct pca9450_regulator_desc pca9450bc_regulators[] = {
+ {
+ .desc = {
+ .name = "buck1",
+ .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,
+ .owner = THIS_MODULE,
+ .of_parse_cb = pca9450_set_dvs_levels,
+ },
+ .dvs = {
+ .run_reg = PCA9450_REG_BUCK1OUT_DVS0,
+ .run_mask = BUCK1OUT_DVS0_MASK,
+ .standby_reg = PCA9450_REG_BUCK1OUT_DVS1,
+ .standby_mask = BUCK1OUT_DVS1_MASK,
+ },
+ },
+ {
+ .desc = {
+ .name = "buck2",
+ .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 = BUCK1_ENMODE_MASK,
+ .owner = THIS_MODULE,
+ .of_parse_cb = pca9450_set_dvs_levels,
+ },
+ .dvs = {
+ .run_reg = PCA9450_REG_BUCK2OUT_DVS0,
+ .run_mask = BUCK2OUT_DVS0_MASK,
+ .standby_reg = PCA9450_REG_BUCK2OUT_DVS1,
+ .standby_mask = BUCK2OUT_DVS1_MASK,
+ },
+ },
+ {
+ .desc = {
+ .name = "buck4",
+ .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,
+ .owner = THIS_MODULE,
+ },
+ },
+ {
+ .desc = {
+ .name = "buck5",
+ .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,
+ .owner = THIS_MODULE,
+ },
+ },
+ {
+ .desc = {
+ .name = "buck6",
+ .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,
+ .owner = THIS_MODULE,
+ },
+ },
+ {
+ .desc = {
+ .name = "ldo1",
+ .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",
+ .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",
+ .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",
+ .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",
+ .of_match = of_match_ptr("LDO5"),
+ .regulators_node = of_match_ptr("regulators"),
+ .id = PCA9450_LDO5,
+ .ops = &pca9450_ldo_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_H,
+ .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_probe(struct i2c_client *i2c,
+ const struct i2c_device_id *id)
+{
+ 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 pca9450 *pca9450;
+ unsigned int device_id, i;
+ int ret;
+
+ if (!i2c->irq) {
+ dev_err(&i2c->dev, "No IRQ configured?\n");
+ return -EINVAL;
+ }
+
+ 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);
+ break;
+ case PCA9450_TYPE_PCA9450BC:
+ regulator_desc = pca9450bc_regulators;
+ pca9450->rcnt = ARRAY_SIZE(pca9450bc_regulators);
+ 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)) {
+ dev_err(&i2c->dev, "regmap initialization failed\n");
+ return PTR_ERR(pca9450->regmap);
+ }
+
+ ret = regmap_read(pca9450->regmap, PCA9450_REG_DEV_ID, &device_id);
+ if (ret) {
+ dev_err(&i2c->dev, "Read device id error\n");
+ return ret;
+ }
+
+ /* 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)) {
+ dev_err(&i2c->dev, "Device id(%x) mismatched\n",
+ device_id >> 4);
+ return -EINVAL;
+ }
+
+ 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;
+
+ config.regmap = pca9450->regmap;
+ config.dev = pca9450->dev;
+
+ rdev = devm_regulator_register(pca9450->dev, desc, &config);
+ if (IS_ERR(rdev)) {
+ ret = PTR_ERR(rdev);
+ dev_err(pca9450->dev,
+ "Failed to register regulator(%s): %d\n",
+ desc->name, ret);
+ return ret;
+ }
+ }
+
+ ret = devm_request_threaded_irq(pca9450->dev, pca9450->irq, NULL,
+ pca9450_irq_handler,
+ (IRQF_TRIGGER_FALLING | IRQF_ONESHOT),
+ "pca9450-irq", pca9450);
+ if (ret != 0) {
+ dev_err(pca9450->dev, "Failed to request IRQ: %d\n",
+ pca9450->irq);
+ return ret;
+ }
+ /* 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) {
+ dev_err(&i2c->dev, "Unmask irq error\n");
+ return ret;
+ }
+
+ dev_info(&i2c->dev, "%s probed.\n",
+ type == PCA9450_TYPE_PCA9450A ? "pca9450a" : "pca9450bc");
+
+ 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,
+ },
+ { }
+};
+MODULE_DEVICE_TABLE(of, pca9450_of_match);
+
+static struct i2c_driver pca9450_i2c_driver = {
+ .driver = {
+ .name = "nxp-pca9450",
+ .of_match_table = pca9450_of_match,
+ },
+ .probe = pca9450_i2c_probe,
+};
+
+static int __init pca9450_i2c_init(void)
+{
+ return i2c_add_driver(&pca9450_i2c_driver);
+}
+module_init(pca9450_i2c_init);
+
+static void __exit pca9450_i2c_exit(void)
+{
+ i2c_del_driver(&pca9450_i2c_driver);
+}
+module_exit(pca9450_i2c_exit);
+
+MODULE_AUTHOR("Robin Gong <yibin.gong@xxxxxxx>");
+MODULE_DESCRIPTION("NXP PCA9450 Power Management IC driver");
+MODULE_LICENSE("GPL");
diff --git a/include/linux/regulator/pca9450.h b/include/linux/regulator/pca9450.h
new file mode 100644
index 00000000..1bbd301
--- /dev/null
+++ b/include/linux/regulator/pca9450.h
@@ -0,0 +1,219 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/* Copyright 2020 NXP. */
+
+#ifndef __LINUX_REG_PCA9450_H__
+#define __LINUX_REG_PCA9450_H__
+
+#include <linux/regmap.h>
+
+enum pca9450_chip_type {
+ PCA9450_TYPE_PCA9450A = 0,
+ PCA9450_TYPE_PCA9450BC,
+ PCA9450_TYPE_AMOUNT,
+};
+
+enum {
+ PCA9450_BUCK1 = 0,
+ PCA9450_BUCK2,
+ PCA9450_BUCK3,
+ PCA9450_BUCK4,
+ PCA9450_BUCK5,
+ PCA9450_BUCK6,
+ PCA9450_LDO1,
+ PCA9450_LDO2,
+ PCA9450_LDO3,
+ PCA9450_LDO4,
+ PCA9450_LDO5,
+ PCA9450_REGULATOR_CNT,
+};
+
+enum {
+ PCA9450_DVS_LEVEL_RUN = 0,
+ PCA9450_DVS_LEVEL_STANDBY,
+ PCA9450_DVS_LEVEL_MAX,
+};
+
+#define PCA9450_BUCK1_VOLTAGE_NUM 0x80
+#define PCA9450_BUCK2_VOLTAGE_NUM 0x80
+#define PCA9450_BUCK3_VOLTAGE_NUM 0x80
+#define PCA9450_BUCK4_VOLTAGE_NUM 0x80
+
+#define PCA9450_BUCK5_VOLTAGE_NUM 0x80
+#define PCA9450_BUCK6_VOLTAGE_NUM 0x80
+
+#define PCA9450_LDO1_VOLTAGE_NUM 0x08
+#define PCA9450_LDO2_VOLTAGE_NUM 0x08
+#define PCA9450_LDO3_VOLTAGE_NUM 0x20
+#define PCA9450_LDO4_VOLTAGE_NUM 0x20
+#define PCA9450_LDO5_VOLTAGE_NUM 0x10
+
+enum {
+ PCA9450_REG_DEV_ID = 0x00,
+ PCA9450_REG_INT1 = 0x01,
+ PCA9450_REG_INT1_MSK = 0x02,
+ PCA9450_REG_STATUS1 = 0x03,
+ PCA9450_REG_STATUS2 = 0x04,
+ PCA9450_REG_PWRON_STAT = 0x05,
+ PCA9450_REG_SWRST = 0x06,
+ PCA9450_REG_PWRCTRL = 0x07,
+ PCA9450_REG_RESET_CTRL = 0x08,
+ PCA9450_REG_CONFIG1 = 0x09,
+ PCA9450_REG_CONFIG2 = 0x0A,
+ PCA9450_REG_BUCK123_DVS = 0x0C,
+ PCA9450_REG_BUCK1OUT_LIMIT = 0x0D,
+ PCA9450_REG_BUCK2OUT_LIMIT = 0x0E,
+ PCA9450_REG_BUCK3OUT_LIMIT = 0x0F,
+ PCA9450_REG_BUCK1CTRL = 0x10,
+ PCA9450_REG_BUCK1OUT_DVS0 = 0x11,
+ PCA9450_REG_BUCK1OUT_DVS1 = 0x12,
+ PCA9450_REG_BUCK2CTRL = 0x13,
+ PCA9450_REG_BUCK2OUT_DVS0 = 0x14,
+ PCA9450_REG_BUCK2OUT_DVS1 = 0x15,
+ PCA9450_REG_BUCK3CTRL = 0x16,
+ PCA9450_REG_BUCK3OUT_DVS0 = 0x17,
+ PCA9450_REG_BUCK3OUT_DVS1 = 0x18,
+ PCA9450_REG_BUCK4CTRL = 0x19,
+ PCA9450_REG_BUCK4OUT = 0x1A,
+ PCA9450_REG_BUCK5CTRL = 0x1B,
+ PCA9450_REG_BUCK5OUT = 0x1C,
+ PCA9450_REG_BUCK6CTRL = 0x1D,
+ PCA9450_REG_BUCK6OUT = 0x1E,
+ PCA9450_REG_LDO_AD_CTRL = 0x20,
+ PCA9450_REG_LDO1CTRL = 0x21,
+ PCA9450_REG_LDO2CTRL = 0x22,
+ PCA9450_REG_LDO3CTRL = 0x23,
+ PCA9450_REG_LDO4CTRL = 0x24,
+ PCA9450_REG_LDO5CTRL_L = 0x25,
+ PCA9450_REG_LDO5CTRL_H = 0x26,
+ PCA9450_REG_LOADSW_CTRL = 0x2A,
+ PCA9450_REG_VRFLT1_STS = 0x2B,
+ PCA9450_REG_VRFLT2_STS = 0x2C,
+ PCA9450_REG_VRFLT1_MASK = 0x2D,
+ PCA9450_REG_VRFLT2_MASK = 0x2E,
+ PCA9450_MAX_REGISTER = 0x2F,
+};
+
+/* PCA9450 BUCK ENMODE bits */
+#define BUCK_ENMODE_OFF 0x00
+#define BUCK_ENMODE_ONREQ 0x01
+#define BUCK_ENMODE_ONREQ_STBYREQ 0x02
+#define BUCK_ENMODE_ON 0x03
+
+/* PCA9450_REG_BUCK1_CTRL bits */
+#define BUCK1_RAMP_MASK 0xC0
+#define BUCK1_RAMP_25MV 0x0
+#define BUCK1_RAMP_12P5MV 0x1
+#define BUCK1_RAMP_6P25MV 0x2
+#define BUCK1_RAMP_3P125MV 0x3
+#define BUCK1_DVS_CTRL 0x10
+#define BUCK1_AD 0x08
+#define BUCK1_FPWM 0x04
+#define BUCK1_ENMODE_MASK 0x03
+
+/* PCA9450_REG_BUCK2_CTRL bits */
+#define BUCK2_RAMP_MASK 0xC0
+#define BUCK2_RAMP_25MV 0x0
+#define BUCK2_RAMP_12P5MV 0x1
+#define BUCK2_RAMP_6P25MV 0x2
+#define BUCK2_RAMP_3P125MV 0x3
+#define BUCK2_DVS_CTRL 0x10
+#define BUCK2_AD 0x08
+#define BUCK2_FPWM 0x04
+#define BUCK2_ENMODE_MASK 0x03
+
+/* PCA9450_REG_BUCK3_CTRL bits */
+#define BUCK3_RAMP_MASK 0xC0
+#define BUCK3_RAMP_25MV 0x0
+#define BUCK3_RAMP_12P5MV 0x1
+#define BUCK3_RAMP_6P25MV 0x2
+#define BUCK3_RAMP_3P125MV 0x3
+#define BUCK3_DVS_CTRL 0x10
+#define BUCK3_AD 0x08
+#define BUCK3_FPWM 0x04
+#define BUCK3_ENMODE_MASK 0x03
+
+/* PCA9450_REG_BUCK4_CTRL bits */
+#define BUCK4_AD 0x08
+#define BUCK4_FPWM 0x04
+#define BUCK4_ENMODE_MASK 0x03
+
+/* PCA9450_REG_BUCK5_CTRL bits */
+#define BUCK5_AD 0x08
+#define BUCK5_FPWM 0x04
+#define BUCK5_ENMODE_MASK 0x03
+
+/* PCA9450_REG_BUCK6_CTRL bits */
+#define BUCK6_AD 0x08
+#define BUCK6_FPWM 0x04
+#define BUCK6_ENMODE_MASK 0x03
+
+/* PCA9450_BUCK1OUT_DVS0 bits */
+#define BUCK1OUT_DVS0_MASK 0x7F
+#define BUCK1OUT_DVS0_DEFAULT 0x14
+
+/* PCA9450_BUCK1OUT_DVS1 bits */
+#define BUCK1OUT_DVS1_MASK 0x7F
+#define BUCK1OUT_DVS1_DEFAULT 0x14
+
+/* PCA9450_BUCK2OUT_DVS0 bits */
+#define BUCK2OUT_DVS0_MASK 0x7F
+#define BUCK2OUT_DVS0_DEFAULT 0x14
+
+/* PCA9450_BUCK2OUT_DVS1 bits */
+#define BUCK2OUT_DVS1_MASK 0x7F
+#define BUCK2OUT_DVS1_DEFAULT 0x14
+
+/* PCA9450_BUCK3OUT_DVS0 bits */
+#define BUCK3OUT_DVS0_MASK 0x7F
+#define BUCK3OUT_DVS0_DEFAULT 0x14
+
+/* PCA9450_BUCK3OUT_DVS1 bits */
+#define BUCK3OUT_DVS1_MASK 0x7F
+#define BUCK3OUT_DVS1_DEFAULT 0x14
+
+/* PCA9450_REG_BUCK4OUT bits */
+#define BUCK4OUT_MASK 0x7F
+#define BUCK4OUT_DEFAULT 0x6C
+
+/* PCA9450_REG_BUCK5OUT bits */
+#define BUCK5OUT_MASK 0x7F
+#define BUCK5OUT_DEFAULT 0x30
+
+/* PCA9450_REG_BUCK6OUT bits */
+#define BUCK6OUT_MASK 0x7F
+#define BUCK6OUT_DEFAULT 0x14
+
+/* PCA9450_REG_LDO1_VOLT bits */
+#define LDO1_EN_MASK 0xC0
+#define LDO1OUT_MASK 0x07
+
+/* PCA9450_REG_LDO2_VOLT bits */
+#define LDO2_EN_MASK 0xC0
+#define LDO2OUT_MASK 0x07
+
+/* PCA9450_REG_LDO3_VOLT bits */
+#define LDO3_EN_MASK 0xC0
+#define LDO3OUT_MASK 0x0F
+
+/* PCA9450_REG_LDO4_VOLT bits */
+#define LDO4_EN_MASK 0xC0
+#define LDO4OUT_MASK 0x0F
+
+/* PCA9450_REG_LDO5_VOLT bits */
+#define LDO5L_EN_MASK 0xC0
+#define LDO5LOUT_MASK 0x0F
+
+#define LDO5H_EN_MASK 0xC0
+#define LDO5HOUT_MASK 0x0F
+
+/* PCA9450_REG_IRQ bits */
+#define IRQ_PWRON 0x80
+#define IRQ_WDOGB 0x40
+#define IRQ_RSVD 0x20
+#define IRQ_VR_FLT1 0x10
+#define IRQ_VR_FLT2 0x08
+#define IRQ_LOWVSYS 0x04
+#define IRQ_THERM_105 0x02
+#define IRQ_THERM_125 0x01
+
+#endif /* __LINUX_REG_PCA9450_H__ */