[PATCH 2/2] power: regulator: Support pmic pf0900
Peng Fan (OSS)
peng.fan at oss.nxp.com
Mon Sep 30 05:22:43 CEST 2024
From: Joy Zou <joy.zou at nxp.com>
Add regulator driver for NXP PF0900
Signed-off-by: Joy Zou <joy.zou at nxp.com>
Reviewed-by: Ye Li <ye.li at nxp.com>
Signed-off-by: Peng Fan <peng.fan at nxp.com>
---
drivers/power/regulator/Kconfig | 15 ++
drivers/power/regulator/Makefile | 1 +
drivers/power/regulator/pf0900.c | 304 +++++++++++++++++++++++++++++++
3 files changed, 320 insertions(+)
create mode 100644 drivers/power/regulator/pf0900.c
diff --git a/drivers/power/regulator/Kconfig b/drivers/power/regulator/Kconfig
index 958f337c7e7..b2f487b050b 100644
--- a/drivers/power/regulator/Kconfig
+++ b/drivers/power/regulator/Kconfig
@@ -96,6 +96,21 @@ config SPL_DM_REGULATOR_PCA9450
This config enables implementation of driver-model regulator uclass
features for regulators on ROHM PCA9450 in SPL.
+config DM_REGULATOR_PF0900
+ bool "Enable Driver Model for NXP PF0900 regulators"
+ depends on DM_REGULATOR && DM_PMIC_PF0900
+ help
+ This config enables implementation of driver-model regulator uclass
+ features for regulators on NXP PF0900 PMICs. PF0900 contains 1 vaon,
+ 5 sws and 3 LDOS. The driver implements get/set api for value and enable.
+
+config SPL_DM_REGULATOR_PF0900
+ bool "Enable Driver Model for NXP PF0900 regulators in SPL"
+ depends on DM_REGULATOR_PF0900 && SPL
+ help
+ This config enables implementation of driver-model regulator uclass
+ features for regulators on ROHM PF0900 in SPL.
+
config DM_REGULATOR_DA9063
bool "Enable Driver Model for REGULATOR DA9063"
depends on DM_REGULATOR && DM_PMIC_DA9063
diff --git a/drivers/power/regulator/Makefile b/drivers/power/regulator/Makefile
index 54db0885657..a49700dfd25 100644
--- a/drivers/power/regulator/Makefile
+++ b/drivers/power/regulator/Makefile
@@ -16,6 +16,7 @@ obj-$(CONFIG_DM_REGULATOR_NPCM8XX) += npcm8xx_regulator.o
obj-$(CONFIG_$(SPL_)DM_PMIC_PFUZE100) += pfuze100.o
obj-$(CONFIG_$(SPL_)DM_REGULATOR_BD71837) += bd71837.o
obj-$(CONFIG_$(SPL_)DM_REGULATOR_PCA9450) += pca9450.o
+obj-$(CONFIG_$(SPL_)DM_REGULATOR_PF0900) += pf0900.o
obj-$(CONFIG_$(SPL_)REGULATOR_PWM) += pwm_regulator.o
obj-$(CONFIG_$(SPL_)DM_REGULATOR_FAN53555) += fan53555.o
obj-$(CONFIG_$(SPL_)DM_REGULATOR_COMMON) += regulator_common.o
diff --git a/drivers/power/regulator/pf0900.c b/drivers/power/regulator/pf0900.c
new file mode 100644
index 00000000000..a56ad8fde32
--- /dev/null
+++ b/drivers/power/regulator/pf0900.c
@@ -0,0 +1,304 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * NXP PF0900 regulator driver
+ * Copyright 2023 NXP
+ *
+ */
+
+#include <dm.h>
+#include <errno.h>
+#include <log.h>
+#include <linux/bitops.h>
+#include <power/pf0900.h>
+#include <power/pmic.h>
+#include <power/regulator.h>
+
+/**
+ * struct pf0900_vrange - describe linear range of voltages
+ *
+ * @min_volt: smallest voltage in range
+ * @min_sel: smallest selector in the range
+ * @max_sel: maximum selector in the range
+ * @step: how much voltage changes at each selector step
+ */
+struct pf0900_vrange {
+ unsigned int min_volt;
+ u8 min_sel;
+ u8 max_sel;
+ unsigned int step;
+};
+
+/**
+ * struct pf0900_plat - describe regulator control registers
+ *
+ * @name: name of the regulator. Used for matching the dt-entry
+ * @enable_reg: register address used to enable/disable regulator
+ * @enablemask: register mask used to enable/disable regulator
+ * @volt_reg: register address used to configure regulator voltage
+ * @volt_mask: register mask used to configure regulator voltage
+ * @ranges: pointer to ranges of regulator voltages and matching register
+ * values
+ * @numranges: number of voltage ranges pointed by ranges
+ */
+struct pf0900_plat {
+ const char *name;
+ u8 enable_reg;
+ u8 enablemask;
+ u8 volt_reg;
+ u8 volt_mask;
+ struct pf0900_vrange *ranges;
+ unsigned int numranges;
+};
+
+#define PCA_RANGE(_min, _sel_low, _sel_hi, _vstep) \
+{ \
+ .min_volt = (_min), .min_sel = (_sel_low), \
+ .max_sel = (_sel_hi), .step = (_vstep),\
+}
+
+#define PCA_DATA(_name, enreg, enmask, vreg, vmask, _range) \
+{ \
+ .name = (_name), .enable_reg = (enreg), .enablemask = (enmask), \
+ .volt_reg = (vreg), .volt_mask = (vmask), .ranges = (_range), \
+ .numranges = ARRAY_SIZE(_range) \
+}
+
+static struct pf0900_vrange pf0900_vaon_vranges[] = {
+ PCA_RANGE(0, 0x00, 0x01, 0x00),
+ PCA_RANGE(1800000, 0x00, 0x01, 0x00),
+ PCA_RANGE(3000000, 0x00, 0x01, 0x00),
+ PCA_RANGE(3300000, 0x00, 0x01, 0x00),
+};
+
+static struct pf0900_vrange pf0900_sw1_vranges[] = {
+ PCA_RANGE(0, 0x00, 0x08, 0),
+ PCA_RANGE(500000, 0x09, 0x91, 6250),
+ PCA_RANGE(0, 0x92, 0x9E, 0),
+ PCA_RANGE(1500000, 0x9F, 0x9F, 0),
+ PCA_RANGE(1800000, 0xA0, 0xD8, 12500),
+ PCA_RANGE(0, 0xD9, 0xDF, 0),
+ PCA_RANGE(2800000, 0xE0, 0xF4, 25000),
+ PCA_RANGE(0, 0xF5, 0xFF, 0),
+};
+
+static struct pf0900_vrange pf0900_sw2345_vranges[] = {
+ PCA_RANGE(300000, 0x00, 0x00, 0),
+ PCA_RANGE(450000, 0x01, 0x91, 6250),
+ PCA_RANGE(0, 0x92, 0x9E, 0),
+ PCA_RANGE(1500000, 0x9F, 0x9F, 0),
+ PCA_RANGE(1800000, 0xA0, 0xD8, 12500),
+ PCA_RANGE(0, 0xD9, 0xDF, 0),
+ PCA_RANGE(2800000, 0xE0, 0xF4, 25000),
+ PCA_RANGE(0, 0xF5, 0xFF, 0),
+};
+
+static struct pf0900_vrange pf0900_ldo1_vranges[] = {
+ PCA_RANGE(750000, 0x00, 0x0F, 50000),
+ PCA_RANGE(1800000, 0x10, 0x1F, 100000),
+};
+
+static struct pf0900_vrange pf0900_ldo23_vranges[] = {
+ PCA_RANGE(650000, 0x00, 0x0D, 50000),
+ PCA_RANGE(1400000, 0x0E, 0x0F, 100000),
+ PCA_RANGE(1800000, 0x10, 0x1F, 100000),
+};
+
+static struct pf0900_plat pf0900_reg_data[] = {
+ PCA_DATA("VAON", PF0900_REG_VAON_CFG1, VAON_1P8V,
+ PF0900_REG_VAON_CFG1, VAON_MASK,
+ pf0900_vaon_vranges),
+ PCA_DATA("SW1", PF0900_REG_SW1_MODE, SW_RUN_MODE_PWM,
+ PF0900_REG_SW1_VRUN, SW_VRUN_MASK,
+ pf0900_sw1_vranges),
+ PCA_DATA("SW2", PF0900_REG_SW2_MODE, SW_RUN_MODE_PWM,
+ PF0900_REG_SW2_VRUN, SW_VRUN_MASK,
+ pf0900_sw2345_vranges),
+ PCA_DATA("SW3", PF0900_REG_SW3_MODE, SW_RUN_MODE_PWM,
+ PF0900_REG_SW3_VRUN, SW_VRUN_MASK,
+ pf0900_sw2345_vranges),
+ PCA_DATA("SW4", PF0900_REG_SW4_MODE, SW_RUN_MODE_PWM,
+ PF0900_REG_SW4_VRUN, SW_VRUN_MASK,
+ pf0900_sw2345_vranges),
+ PCA_DATA("SW5", PF0900_REG_SW5_MODE, SW_RUN_MODE_PWM,
+ PF0900_REG_SW5_VRUN, SW_VRUN_MASK,
+ pf0900_sw2345_vranges),
+ PCA_DATA("LDO1", PF0900_REG_LDO1_RUN, LDO1_RUN_EN_MASK,
+ PF0900_REG_LDO1_RUN, VLDO1_RUN_MASK,
+ pf0900_ldo1_vranges),
+ PCA_DATA("LDO2", PF0900_REG_LDO2_RUN, LDO2_RUN_EN_MASK,
+ PF0900_REG_LDO2_RUN, VLDO2_RUN_MASK,
+ pf0900_ldo23_vranges),
+ PCA_DATA("LDO3", PF0900_REG_LDO3_RUN, LDO3_RUN_EN_MASK,
+ PF0900_REG_LDO3_RUN, VLDO3_RUN_MASK,
+ pf0900_ldo23_vranges),
+};
+
+static int vrange_find_value(struct pf0900_vrange *r, unsigned int sel,
+ unsigned int *val)
+{
+ if (!val || sel < r->min_sel || sel > r->max_sel)
+ return -EINVAL;
+
+ *val = r->min_volt + r->step * (sel - r->min_sel);
+ return 0;
+}
+
+static int vrange_find_selector(struct pf0900_vrange *r, int val,
+ unsigned int *sel)
+{
+ int ret = -EINVAL;
+ int num_vals = r->max_sel - r->min_sel + 1;
+
+ if (val >= r->min_volt &&
+ val <= r->min_volt + r->step * (num_vals - 1)) {
+ if (r->step) {
+ *sel = r->min_sel + ((val - r->min_volt) / r->step);
+ ret = 0;
+ } else {
+ *sel = r->min_sel;
+ ret = 0;
+ }
+ }
+ return ret;
+}
+
+static int pf0900_get_enable(struct udevice *dev)
+{
+ struct pf0900_plat *plat = dev_get_plat(dev);
+ int val;
+
+ val = pmic_reg_read(dev->parent, plat->enable_reg);
+ if (val < 0)
+ return val;
+
+ return (val & plat->enablemask);
+}
+
+static int pf0900_set_enable(struct udevice *dev, bool enable)
+{
+ int val = 0;
+ int tmp = 0;
+ struct pf0900_plat *plat = dev_get_plat(dev);
+
+ if (enable)
+ tmp = plat->enablemask;
+ val = pmic_reg_read(dev->parent, plat->enable_reg);
+ if (val < 0)
+ return val;
+ val = (tmp & plat->enablemask) | (val & (~plat->enablemask));
+
+ return pmic_reg_write(dev->parent, plat->enable_reg, val);
+}
+
+static int pf0900_get_value(struct udevice *dev)
+{
+ struct pf0900_plat *plat = dev_get_plat(dev);
+ unsigned int reg, tmp;
+ int i, ret;
+
+ ret = pmic_reg_read(dev->parent, plat->volt_reg);
+ if (ret < 0)
+ return ret;
+
+ reg = ret;
+ reg &= plat->volt_mask;
+
+ if (!strcmp(plat->name, "VAON"))
+ return plat->ranges[reg].min_volt;
+
+ for (i = 0; i < plat->numranges; i++) {
+ struct pf0900_vrange *r = &plat->ranges[i];
+
+ if (!vrange_find_value(r, reg, &tmp))
+ return tmp;
+ }
+
+ pr_err("Unknown voltage value read from pmic\n");
+
+ return -EINVAL;
+}
+
+static int pf0900_set_value(struct udevice *dev, int uvolt)
+{
+ struct pf0900_plat *plat = dev_get_plat(dev);
+ unsigned int sel;
+ int i, val, found = 0;
+
+ for (i = 0; i < plat->numranges; i++) {
+ struct pf0900_vrange *r = &plat->ranges[i];
+
+ if (!strcmp(plat->name, "VAON")) {
+ if (r->min_volt == uvolt) {
+ sel = i;
+ found = 1;
+ break;
+ }
+
+ continue;
+ }
+
+ found = !vrange_find_selector(r, uvolt, &sel);
+ if (found) {
+ unsigned int tmp;
+
+ /*
+ * We require exactly the requested value to be
+ * supported - this can be changed later if needed
+ */
+ found = !vrange_find_value(r, sel, &tmp);
+ if (found && tmp == uvolt)
+ break;
+ found = 0;
+ }
+ }
+
+ if (!found)
+ return -EINVAL;
+
+ val = pmic_reg_read(dev->parent, plat->volt_reg);
+ if (val < 0)
+ return val;
+ val = (sel & plat->volt_mask) | (val & (~plat->volt_mask));
+ return pmic_reg_write(dev->parent, plat->volt_reg, val);
+}
+
+static int pf0900_regulator_probe(struct udevice *dev)
+{
+ struct pf0900_plat *plat = dev_get_plat(dev);
+ int i, type;
+
+ type = dev_get_driver_data(dev_get_parent(dev));
+
+ if (type != PF0900_TYPE_PF0900) {
+ debug("Unknown PMIC type\n");
+ return -EINVAL;
+ }
+
+ for (i = 0; i < ARRAY_SIZE(pf0900_reg_data); i++) {
+ if (strcmp(dev->name, pf0900_reg_data[i].name))
+ continue;
+
+ *plat = pf0900_reg_data[i];
+
+ return 0;
+ }
+
+ pr_err("Unknown regulator '%s'\n", dev->name);
+
+ return -ENOENT;
+}
+
+static const struct dm_regulator_ops pf0900_regulator_ops = {
+ .get_value = pf0900_get_value,
+ .set_value = pf0900_set_value,
+ .get_enable = pf0900_get_enable,
+ .set_enable = pf0900_set_enable,
+};
+
+U_BOOT_DRIVER(pf0900_regulator) = {
+ .name = PF0900_REGULATOR_DRIVER,
+ .id = UCLASS_REGULATOR,
+ .ops = &pf0900_regulator_ops,
+ .probe = pf0900_regulator_probe,
+ .plat_auto = sizeof(struct pf0900_plat),
+};
--
2.35.3
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