From: Joy Zou joy.zou@nxp.com
Add regulator support for NXP pmic pf5300.
Signed-off-by: Joy Zou joy.zou@nxp.com Reviewed-by: Ye Li ye.li@nxp.com Signed-off-by: Peng Fan peng.fan@nxp.com --- drivers/power/regulator/Kconfig | 15 ++ drivers/power/regulator/Makefile | 1 + drivers/power/regulator/pf5300.c | 247 +++++++++++++++++++++++++++++++ 3 files changed, 263 insertions(+) create mode 100644 drivers/power/regulator/pf5300.c
diff --git a/drivers/power/regulator/Kconfig b/drivers/power/regulator/Kconfig index b2f487b050b..69dfb07df50 100644 --- a/drivers/power/regulator/Kconfig +++ b/drivers/power/regulator/Kconfig @@ -111,6 +111,21 @@ config SPL_DM_REGULATOR_PF0900 This config enables implementation of driver-model regulator uclass features for regulators on ROHM PF0900 in SPL.
+config DM_REGULATOR_PF5300 + bool "Enable Driver Model for NXP PF5300 regulators" + depends on DM_REGULATOR && DM_PMIC_PF5300 + help + This config enables implementation of driver-model regulator uclass + features for regulators on NXP PF5300 PMICs. PF5300 contains 1 sw. + The driver implements get/set api for value and enable. + +config SPL_DM_REGULATOR_PF5300 + bool "Enable Driver Model for NXP PF5300 regulators in SPL" + depends on DM_REGULATOR_PF0900 && SPL + help + This config enables implementation of driver-model regulator uclass + features for regulators on ROHM PF5300 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 a49700dfd25..7a580d45b72 100644 --- a/drivers/power/regulator/Makefile +++ b/drivers/power/regulator/Makefile @@ -17,6 +17,7 @@ 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_)DM_REGULATOR_PF5300) += pf5300.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/pf5300.c b/drivers/power/regulator/pf5300.c new file mode 100644 index 00000000000..6df24934e09 --- /dev/null +++ b/drivers/power/regulator/pf5300.c @@ -0,0 +1,247 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * NXP PF5300 regulator driver + * Copyright 2023 NXP + */ + +#include <dm.h> +#include <errno.h> +#include <log.h> +#include <linux/bitops.h> +#include <power/pf5300.h> +#include <power/pmic.h> +#include <power/regulator.h> + +/** + * struct pf5300_vrange - describe linear range of voltages + * + * @min_volt: smallest voltage in range + * @step: how much voltage changes at each selector step + * @min_sel: smallest selector in the range + * @max_sel: maximum selector in the range + */ +struct pf5300_vrange { + unsigned int min_volt; + u8 min_sel; + u8 max_sel; + unsigned int step; +}; + +/** + * struct pf5300_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 pf5300_plat { + const char *name; + u8 enable_reg; + u8 enablemask; + u8 volt_reg; + u8 volt_mask; + struct pf5300_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 pf5300_vrange pf5300_sw1_vranges[] = { + PCA_RANGE(500000, 0x00, 0x8C, 5000), + PCA_RANGE(0, 0x8D, 0xFF, 0), +}; + +static struct pf5300_plat pf5301_reg_data[] = { + PCA_DATA("SW1_2a", PF5300_REG_SW1_CTRL1, SW_MODE_PWM, + PF5300_REG_SW1_VOLT, SW1_VOLT_MASK, + pf5300_sw1_vranges), +}; + +static struct pf5300_plat pf5302_reg_data[] = { + PCA_DATA("SW1_29", PF5300_REG_SW1_CTRL1, SW_MODE_PWM, + PF5300_REG_SW1_VOLT, SW1_VOLT_MASK, + pf5300_sw1_vranges), +}; + +static int vrange_find_value(struct pf5300_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 pf5300_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 pf5300_get_enable(struct udevice *dev) +{ + struct pf5300_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 pf5300_set_enable(struct udevice *dev, bool enable) +{ + int val = 0; + int tmp = 0; + struct pf5300_plat *plat = dev_get_plat(dev); + + if (enable) + tmp = plat->enablemask; + val = pmic_reg_read(dev->parent, plat->enable_reg); + if (tmp < 0) + return tmp; + val = (tmp & plat->enablemask) | (val & (~plat->enablemask)); + + return pmic_reg_write(dev->parent, plat->enable_reg, val); +} + +static int pf5300_get_value(struct udevice *dev) +{ + struct pf5300_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; + + for (i = 0; i < plat->numranges; i++) { + struct pf5300_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 pf5300_set_value(struct udevice *dev, int uvolt) +{ + struct pf5300_plat *plat = dev_get_plat(dev); + unsigned int sel; + int i, val, found = 0; + + for (i = 0; i < plat->numranges; i++) { + struct pf5300_vrange *r = &plat->ranges[i]; + + 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 pf5300_regulator_probe(struct udevice *dev) +{ + struct pf5300_plat *plat = dev_get_plat(dev); + int i, type; + + type = dev_get_driver_data(dev_get_parent(dev)); + + if (type != PF5300_TYPE_PF5300 && type != PF5300_TYPE_PF5301 && + type != PF5300_TYPE_PF5302) { + debug("Unknown PMIC type\n"); + return -EINVAL; + } + + if (type == PF5300_TYPE_PF5301) { + for (i = 0; i < ARRAY_SIZE(pf5301_reg_data); i++) { + if (strcmp(dev->name, pf5301_reg_data[i].name)) + continue; + *plat = pf5301_reg_data[i]; + + return 0; + } + } else if (type == PF5300_TYPE_PF5302) { + for (i = 0; i < ARRAY_SIZE(pf5302_reg_data); i++) { + if (strcmp(dev->name, pf5302_reg_data[i].name)) + continue; + *plat = pf5301_reg_data[i]; + + return 0; + } + } + + pr_err("Unknown regulator '%s'\n", dev->name); + + return -ENOENT; +} + +static const struct dm_regulator_ops pf5300_regulator_ops = { + .get_value = pf5300_get_value, + .set_value = pf5300_set_value, + .get_enable = pf5300_get_enable, + .set_enable = pf5300_set_enable, +}; + +U_BOOT_DRIVER(pf5300_regulator) = { + .name = PF5300_REGULATOR_DRIVER, + .id = UCLASS_REGULATOR, + .ops = &pf5300_regulator_ops, + .probe = pf5300_regulator_probe, + .plat_auto = sizeof(struct pf5300_plat), +};