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path: root/drivers/regulator/pca9450-regulator.c
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-rw-r--r--drivers/regulator/pca9450-regulator.c884
1 files changed, 884 insertions, 0 deletions
diff --git a/drivers/regulator/pca9450-regulator.c b/drivers/regulator/pca9450-regulator.c
new file mode 100644
index 0000000000..2ab365d274
--- /dev/null
+++ b/drivers/regulator/pca9450-regulator.c
@@ -0,0 +1,884 @@
+// 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/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>
+
+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;
+ struct gpio_desc *sd_vsel_gpio;
+ 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 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,
+};
+
+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,
+};
+
+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,
+};
+
+/*
+ * 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;
+ }
+ }
+
+ if (ret == 0) {
+ struct pca9450_regulator_desc *regulator = container_of(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)
+{
+ 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,
+ .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,
+ },
+ .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 = BUCK2_ENMODE_MASK,
+ .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,
+ },
+ .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,
+ .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,
+ },
+ .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,
+ .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,
+ },
+ .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 = BUCK2_ENMODE_MASK,
+ .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,
+ },
+ .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)
+{
+ 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;
+ unsigned int reset_ctrl;
+ 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;
+ }
+
+ /* 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) {
+ dev_err(&i2c->dev, "Failed to clear PRESET_EN bit: %d\n", ret);
+ return ret;
+ }
+
+ 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) {
+ dev_err(&i2c->dev, "Failed to set WDOG_B reset behavior\n");
+ return ret;
+ }
+
+ 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) {
+ dev_err(&i2c->dev,
+ "Failed to enable I2C level translator\n");
+ return ret;
+ }
+ }
+
+ /*
+ * The driver uses the LDO5CTRL_H register to control the LDO5 regulator.
+ * This is only valid if the SD_VSEL input of the PMIC is high. Let's
+ * check if the pin is available as GPIO and set it to high.
+ */
+ pca9450->sd_vsel_gpio = gpiod_get_optional(pca9450->dev, "sd-vsel", GPIOD_OUT_HIGH);
+
+ if (IS_ERR(pca9450->sd_vsel_gpio)) {
+ dev_err(&i2c->dev, "Failed to get SD_VSEL GPIO\n");
+ return PTR_ERR(pca9450->sd_vsel_gpio);
+ }
+
+ 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",
+ .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");
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-01 10:21:34 +0000