The driver provides regulator set/get voltage enable/disable functions for TI TPS80031/TPS80032 PMICs.
Signed-off-by: Svyatoslav Ryhel clamor95@gmail.com Reviewed-by: Simon Glass sjg@chromium.org --- drivers/power/regulator/Kconfig | 8 + drivers/power/regulator/Makefile | 1 + drivers/power/regulator/tps80031_regulator.c | 350 +++++++++++++++++++ 3 files changed, 359 insertions(+) create mode 100644 drivers/power/regulator/tps80031_regulator.c
diff --git a/drivers/power/regulator/Kconfig b/drivers/power/regulator/Kconfig index 581816294c..6454c54855 100644 --- a/drivers/power/regulator/Kconfig +++ b/drivers/power/regulator/Kconfig @@ -356,6 +356,14 @@ config DM_REGULATOR_TPS62360 implements the get/set api for value only, as the power line is always on.
+config DM_REGULATOR_TPS80031 + bool "Enable driver for TPS80031/TPS80032 PMIC regulators" + depends on DM_PMIC_TPS80031 + ---help--- + This enables implementation of driver-model regulator uclass + features for TPS80031/TPS80032 PMICs. The driver implements + get/set api for: value and enable. + config DM_REGULATOR_STPMIC1 bool "Enable driver for STPMIC1 regulators" depends on DM_REGULATOR && PMIC_STPMIC1 diff --git a/drivers/power/regulator/Makefile b/drivers/power/regulator/Makefile index 8d73169b50..3ef55dc534 100644 --- a/drivers/power/regulator/Makefile +++ b/drivers/power/regulator/Makefile @@ -33,6 +33,7 @@ obj-$(CONFIG_$(SPL_)DM_REGULATOR_LP87565) += lp87565_regulator.o obj-$(CONFIG_$(SPL_)DM_REGULATOR_STM32_VREFBUF) += stm32-vrefbuf.o obj-$(CONFIG_DM_REGULATOR_TPS65910) += tps65910_regulator.o obj-$(CONFIG_DM_REGULATOR_TPS62360) += tps62360_regulator.o +obj-$(CONFIG_$(SPL_)DM_REGULATOR_TPS80031) += tps80031_regulator.o obj-$(CONFIG_$(SPL_)DM_REGULATOR_STPMIC1) += stpmic1.o obj-$(CONFIG_DM_REGULATOR_TPS65941) += tps65941_regulator.o obj-$(CONFIG_DM_REGULATOR_SCMI) += scmi_regulator.o diff --git a/drivers/power/regulator/tps80031_regulator.c b/drivers/power/regulator/tps80031_regulator.c new file mode 100644 index 0000000000..f0b5a0b65b --- /dev/null +++ b/drivers/power/regulator/tps80031_regulator.c @@ -0,0 +1,350 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright(C) 2023 Svyatoslav Ryhel clamor95@gmail.com + */ + +#include <common.h> +#include <fdtdec.h> +#include <errno.h> +#include <dm.h> +#include <power/pmic.h> +#include <power/regulator.h> +#include <power/tps80031.h> + +static const char tps80031_smps_reg[][TPS80031_SMPS_NUM] = { + { 0x54, 0x5a, 0x66, 0x42, 0x48 }, + { 0x56, 0x5c, 0x68, 0x44, 0x4a }, + { BIT(3), BIT(4), BIT(6), BIT(0), BIT(1) }, +}; + +static const char tps80031_ldo_reg[][TPS80031_LDO_NUM] = { + { 0x9e, 0x86, 0x8e, 0x8a, 0x9a, 0x92, 0xa6, 0x96, 0xa2 }, + { 0x9f, 0x87, 0x8f, 0x8b, 0x9b, 0x93, 0xa7, 0x97, 0xa3 }, +}; + +static int tps80031_regulator_enable(struct udevice *dev, int op, bool *enable) +{ + struct dm_regulator_uclass_plat *uc_pdata = + dev_get_uclass_plat(dev); + u32 adr = uc_pdata->ctrl_reg; + int val, ret; + + val = pmic_reg_read(dev->parent, adr); + if (val < 0) + return val; + + if (op == PMIC_OP_GET) { + if (val & REGULATOR_MODE_ON) + *enable = true; + else + *enable = false; + + return 0; + } else if (op == PMIC_OP_SET) { + val &= ~REGULATOR_STATUS_MASK; + + if (*enable) + val |= REGULATOR_MODE_ON; + + ret = pmic_reg_write(dev->parent, adr, val); + if (ret) + return ret; + } + + return 0; +} + +static int tps80031_get_enable(struct udevice *dev) +{ + bool enable = false; + int ret; + + ret = tps80031_regulator_enable(dev, PMIC_OP_GET, &enable); + if (ret) + return ret; + + return enable; +} + +static int tps80031_set_enable(struct udevice *dev, bool enable) +{ + return tps80031_regulator_enable(dev, PMIC_OP_SET, &enable); +} + +/** + * tps80031_ldo_volt2hex() - convert voltage in uV into + * applicable to register hex value + * + * @uV: voltage in uV + * + * Return: voltage in hex on success, -ve on failure + */ +static int tps80031_ldo_volt2hex(int uV) +{ + if (uV > LDO_VOLT_MAX) + return -EINVAL; + + if (uV < LDO_VOLT_MIN) + uV = LDO_VOLT_MIN; + + return DIV_ROUND_UP(uV - LDO_VOLT_BASE, 102000); +} + +/** + * tps80031_ldo_hex2volt() - convert register hex value into + * actual voltage in uV + * + * @hex: hex value of register + * + * Return: voltage in uV on success, -ve on failure + */ +static int tps80031_ldo_hex2volt(int hex) +{ + if (hex > LDO_VOLT_MAX_HEX) + return -EINVAL; + + if (hex < LDO_VOLT_MIN_HEX) + hex = LDO_VOLT_MIN_HEX; + + return LDO_VOLT_BASE + hex * 102000; +} + +static int tps80031_ldo_val(struct udevice *dev, int op, int *uV) +{ + struct dm_regulator_uclass_plat *uc_pdata = + dev_get_uclass_plat(dev); + u32 adr = uc_pdata->volt_reg; + int val, hex, ret; + + val = pmic_reg_read(dev->parent, adr); + if (val < 0) + return val; + + if (op == PMIC_OP_GET) { + *uV = 0; + + ret = tps80031_ldo_hex2volt(val & LDO_VOLT_MASK); + if (ret < 0) + return ret; + + *uV = ret; + return 0; + } + + hex = tps80031_ldo_volt2hex(*uV); + if (hex < 0) + return hex; + + val &= ~LDO_VOLT_MASK; + + return pmic_reg_write(dev->parent, adr, val | hex); +} + +static int tps80031_ldo_probe(struct udevice *dev) +{ + struct dm_regulator_uclass_plat *uc_pdata = + dev_get_uclass_plat(dev); + + uc_pdata->type = REGULATOR_TYPE_LDO; + + /* check for ldoln and ldousb cases */ + if (!strcmp("ldoln", dev->name)) { + uc_pdata->ctrl_reg = tps80031_ldo_reg[CTRL][7]; + uc_pdata->volt_reg = tps80031_ldo_reg[VOLT][7]; + return 0; + } + + if (!strcmp("ldousb", dev->name)) { + uc_pdata->ctrl_reg = tps80031_ldo_reg[CTRL][8]; + uc_pdata->volt_reg = tps80031_ldo_reg[VOLT][8]; + return 0; + } + + if (dev->driver_data > 0) { + u8 idx = dev->driver_data - 1; + + uc_pdata->ctrl_reg = tps80031_ldo_reg[CTRL][idx]; + uc_pdata->volt_reg = tps80031_ldo_reg[VOLT][idx]; + } + + return 0; +} + +static int ldo_get_value(struct udevice *dev) +{ + int uV; + int ret; + + ret = tps80031_ldo_val(dev, PMIC_OP_GET, &uV); + if (ret) + return ret; + + return uV; +} + +static int ldo_set_value(struct udevice *dev, int uV) +{ + return tps80031_ldo_val(dev, PMIC_OP_SET, &uV); +} + +static const struct dm_regulator_ops tps80031_ldo_ops = { + .get_value = ldo_get_value, + .set_value = ldo_set_value, + .get_enable = tps80031_get_enable, + .set_enable = tps80031_set_enable, +}; + +U_BOOT_DRIVER(tps80031_ldo) = { + .name = TPS80031_LDO_DRIVER, + .id = UCLASS_REGULATOR, + .ops = &tps80031_ldo_ops, + .probe = tps80031_ldo_probe, +}; + +struct tps80031_smps_priv { + int flags; +}; + +/* DCDC voltages for the selector of 0x39 to 0x3F */ +static int tps80031_dcdc_voltages[5] = { + 1350000, 1500000, 1800000, 1900000, 2100000 +}; + +/** + * tps80031_smps_volt2hex() - convert voltage in uV into + * applicable to register hex value + * + * @base: base voltage in uV + * @uV: voltage in uV + * + * Return: voltage in hex on success, -ve on failure + */ +static int tps80031_smps_volt2hex(u32 base, int uV) +{ + int i; + + if (uV < base) + return 1; + + if (uV > SMPS_VOLT_LINEAR) { + for (i = 0; i < ARRAY_SIZE(tps80031_dcdc_voltages); i++) + if (uV <= tps80031_dcdc_voltages[i]) + break; + + return SMPS_VOLT_NLINEAR_HEX + i; + } + + return DIV_ROUND_UP(uV - base, 12500); +} + +/** + * tps80031_smps_hex2volt() - convert register hex value into + * actual voltage in uV + * + * @base: base voltage in uV + * @hex: hex value of register + * + * Return: voltage in uV on success, -ve on failure + */ +static int tps80031_smps_hex2volt(u32 base, int hex) +{ + if (!hex) + return 0; + + /* if reg value exceeds linear scale use table */ + if (hex > SMPS_VOLT_LINEAR_HEX) + return tps80031_dcdc_voltages[hex - SMPS_VOLT_LINEAR_HEX]; + else + return base + hex * 12500; +} + +static int tps80031_smps_val(struct udevice *dev, int op, int *uV) +{ + struct dm_regulator_uclass_plat *uc_pdata = + dev_get_uclass_plat(dev); + struct tps80031_smps_priv *priv = dev_get_priv(dev); + u32 adr = uc_pdata->volt_reg; + int base, val, hex, ret; + + /* If offset flag was set then base voltage is higher */ + if (priv->flags & TPS80031_OFFSET_FLAG) + base = SMPS_VOLT_BASE_OFFSET; + else + base = SMPS_VOLT_BASE; + + val = pmic_reg_read(dev->parent, adr); + if (val < 0) + return val; + + if (op == PMIC_OP_GET) { + *uV = 0; + + ret = tps80031_smps_hex2volt(base, val & SMPS_VOLT_MASK); + if (ret < 0) + return ret; + + *uV = ret; + return 0; + } + + hex = tps80031_smps_volt2hex(base, *uV); + if (hex < 0) + return hex; + + val &= ~SMPS_VOLT_MASK; + + return pmic_reg_write(dev->parent, adr, val | hex); +} + +static int tps80031_smps_probe(struct udevice *dev) +{ + struct dm_regulator_uclass_plat *uc_pdata = + dev_get_uclass_plat(dev); + struct tps80031_smps_priv *priv = dev_get_priv(dev); + int idx = dev->driver_data - 1; + int val; + + uc_pdata->type = REGULATOR_TYPE_BUCK; + + uc_pdata->ctrl_reg = tps80031_smps_reg[CTRL][idx]; + uc_pdata->volt_reg = tps80031_smps_reg[VOLT][idx]; + + /* Determine if smps regulator uses higher voltage */ + val = pmic_reg_read(dev->parent, TPS80031_SMPS_OFFSET); + if (val & tps80031_smps_reg[OFFSET][idx]) + priv->flags |= TPS80031_OFFSET_FLAG; + + return 0; +} + +static int smps_get_value(struct udevice *dev) +{ + int uV; + int ret; + + ret = tps80031_smps_val(dev, PMIC_OP_GET, &uV); + if (ret) + return ret; + + return uV; +} + +static int smps_set_value(struct udevice *dev, int uV) +{ + return tps80031_smps_val(dev, PMIC_OP_SET, &uV); +} + +static const struct dm_regulator_ops tps80031_smps_ops = { + .get_value = smps_get_value, + .set_value = smps_set_value, + .get_enable = tps80031_get_enable, + .set_enable = tps80031_set_enable, +}; + +U_BOOT_DRIVER(tps80031_smps) = { + .name = TPS80031_SMPS_DRIVER, + .id = UCLASS_REGULATOR, + .ops = &tps80031_smps_ops, + .probe = tps80031_smps_probe, + .priv_auto = sizeof(struct tps80031_smps_priv), +};