From 411502ccb81da2626046dd5eb2399e6e983b0c44 Mon Sep 17 00:00:00 2001 From: Neil Armstrong Date: Wed, 27 Apr 2022 13:28:10 +0200 Subject: regulator: add driver for the TPS65219 BUCK & LDO regulators The TPS65219 I2S PMIC features 3 Buck converters and 4 linear regulators, 2 GPOs, 1 GPIO, and 3 multi-function-pin. This adds the driver for the Buck converters & linear regulators. Signed-off-by: Neil Armstrong --- drivers/power/regulator/Kconfig | 9 + drivers/power/regulator/Makefile | 1 + drivers/power/regulator/tps65219_regulator.c | 380 +++++++++++++++++++++++++++ 3 files changed, 390 insertions(+) create mode 100644 drivers/power/regulator/tps65219_regulator.c (limited to 'drivers') diff --git a/drivers/power/regulator/Kconfig b/drivers/power/regulator/Kconfig index cd253b9..9145408 100644 --- a/drivers/power/regulator/Kconfig +++ b/drivers/power/regulator/Kconfig @@ -371,3 +371,12 @@ config DM_REGULATOR_SCMI help Enable this option if you want to support regulators exposed through the SCMI voltage domain protocol by a SCMI server. + +config DM_REGULATOR_TPS65219 + bool "Enable driver for TPS65219 PMIC regulators" + depends on PMIC_TPS65219 + help + This enables implementation of driver-model regulator uclass + features for REGULATOR TPS65219 and the family of TPS65219 PMICs. + TPS65219 series of PMICs have 3 single phase BUCKs & 4 LDOs. + The driver implements get/set api for value and enable. diff --git a/drivers/power/regulator/Makefile b/drivers/power/regulator/Makefile index 4efb32a..b9883df 100644 --- a/drivers/power/regulator/Makefile +++ b/drivers/power/regulator/Makefile @@ -32,3 +32,4 @@ obj-$(CONFIG_$(SPL_)DM_REGULATOR_STPMIC1) += stpmic1.o obj-$(CONFIG_DM_REGULATOR_TPS65941) += tps65941_regulator.o obj-$(CONFIG_DM_REGULATOR_SCMI) += scmi_regulator.o obj-$(CONFIG_$(SPL_)DM_REGULATOR_ANATOP) += anatop_regulator.o +obj-$(CONFIG_DM_REGULATOR_TPS65219) += tps65219_regulator.o diff --git a/drivers/power/regulator/tps65219_regulator.c b/drivers/power/regulator/tps65219_regulator.c new file mode 100644 index 0000000..023cf21 --- /dev/null +++ b/drivers/power/regulator/tps65219_regulator.c @@ -0,0 +1,380 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * (C) Copyright 2022 BayLibre, SAS + * Author: Neil Armstrong + * + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +static const unsigned int tps65219_buck_vout[TPS65219_BUCK_NUM] = { + [0] = TPS65219_BUCK1_VOUT_REG, + [1] = TPS65219_BUCK2_VOUT_REG, + [2] = TPS65219_BUCK3_VOUT_REG +}; + +static const unsigned int tps65219_ldo_vout[TPS65219_LDO_NUM] = { + [0] = TPS65219_LDO1_VOUT_REG, + [1] = TPS65219_LDO2_VOUT_REG, + [2] = TPS65219_LDO3_VOUT_REG, + [3] = TPS65219_LDO4_VOUT_REG, +}; + +static int tps65219_reg_enable(struct udevice *dev, unsigned int adr, int idx, + int op, bool *enable) +{ + int ret; + + ret = pmic_reg_read(dev->parent, adr); + if (ret < 0) + return ret; + + if (op == PMIC_OP_GET) { + if (ret & BIT(idx)) + *enable = true; + else + *enable = false; + + return 0; + } else if (op == PMIC_OP_SET) { + if (*enable) + ret |= BIT(idx); + else + ret &= ~BIT(idx); + + ret = pmic_reg_write(dev->parent, adr, ret); + if (ret) + return ret; + } + + return 0; +} + +static int tps65219_buck_enable(struct udevice *dev, int op, bool *enable) +{ + unsigned int adr; + struct dm_regulator_uclass_plat *uc_pdata; + int idx; + + idx = dev->driver_data - 1; + uc_pdata = dev_get_uclass_plat(dev); + adr = uc_pdata->ctrl_reg; + + return tps65219_reg_enable(dev, adr, idx, op, enable); +} + +static int tps65219_buck_volt2val(int uV) +{ + if (uV > TPS65219_BUCK_VOLT_MAX) + return -EINVAL; + else if (uV >= 1400000) + return (uV - 1400000) / 100000 + 0x20; + else if (uV >= 600000) + return (uV - 600000) / 25000 + 0x00; + else + return -EINVAL; +} + +static int tps65219_buck_val2volt(int val) +{ + if (val > TPS65219_VOLT_MASK) + return -EINVAL; + else if (val > 0x34) + return TPS65219_BUCK_VOLT_MAX; + else if (val > 0x20) + return 1400000 + (val - 0x20) * 100000; + else if (val >= 0) + return 600000 + val * 25000; + else + return -EINVAL; +} + +static int tps65219_buck_val(struct udevice *dev, int op, int *uV) +{ + unsigned int adr; + int ret, val; + struct dm_regulator_uclass_plat *uc_pdata; + + uc_pdata = dev_get_uclass_plat(dev); + adr = uc_pdata->volt_reg; + + ret = pmic_reg_read(dev->parent, adr); + if (ret < 0) + return ret; + + if (op == PMIC_OP_GET) { + *uV = 0; + + ret &= TPS65219_VOLT_MASK; + ret = tps65219_buck_val2volt(ret); + if (ret < 0) + return ret; + + *uV = ret; + return 0; + } + + val = tps65219_buck_volt2val(*uV); + if (val < 0) + return val; + + ret &= ~TPS65219_VOLT_MASK; + ret |= val; + + ret = pmic_reg_write(dev->parent, adr, ret); + + udelay(100); + + return ret; +} + +static int tps65219_ldo_enable(struct udevice *dev, int op, bool *enable) +{ + unsigned int adr; + struct dm_regulator_uclass_plat *uc_pdata; + int idx; + + idx = TPS65219_BUCK_NUM + (dev->driver_data - 1); + uc_pdata = dev_get_uclass_plat(dev); + adr = uc_pdata->ctrl_reg; + + return tps65219_reg_enable(dev, adr, idx, op, enable); +} + +static int tps65219_ldo_volt2val(int idx, int uV) +{ + int base = TPS65219_LDO12_VOLT_MIN; + int max = TPS65219_LDO12_VOLT_MAX; + + if (idx > 1) { + base = TPS65219_LDO34_VOLT_MIN; + max = TPS65219_LDO34_VOLT_MAX; + } + + if (uV > max) + return -EINVAL; + else if (uV >= base) + return (uV - TPS65219_LDO12_VOLT_MIN) / 50000; + else + return -EINVAL; +} + +static int tps65219_ldo_val2volt(int idx, int val) +{ + int reg_base = TPS65219_LDO12_VOLT_REG_MIN; + int reg_max = TPS65219_LDO12_VOLT_REG_MAX; + int base = TPS65219_LDO12_VOLT_MIN; + int max = TPS65219_LDO12_VOLT_MAX; + + if (idx > 1) { + base = TPS65219_LDO34_VOLT_MIN; + max = TPS65219_LDO34_VOLT_MAX; + reg_base = TPS65219_LDO34_VOLT_REG_MIN; + reg_max = TPS65219_LDO34_VOLT_REG_MAX; + } + + if (val > TPS65219_VOLT_MASK || val < 0) + return -EINVAL; + else if (val >= reg_max) + return max; + else if (val <= reg_base) + return base; + else if (val >= 0) + return TPS65219_LDO12_VOLT_MIN + (50000 * val); + else + return -EINVAL; +} + +static int tps65219_ldo_val(struct udevice *dev, int op, int *uV) +{ + unsigned int adr; + int ret, val; + struct dm_regulator_uclass_plat *uc_pdata; + int idx; + + idx = dev->driver_data - 1; + uc_pdata = dev_get_uclass_plat(dev); + adr = uc_pdata->volt_reg; + + ret = pmic_reg_read(dev->parent, adr); + if (ret < 0) + return ret; + + if (op == PMIC_OP_GET) { + *uV = 0; + + ret &= TPS65219_VOLT_MASK; + ret = tps65219_ldo_val2volt(idx, ret); + if (ret < 0) + return ret; + + *uV = ret; + return 0; + } + + /* LDO1 & LDO2 in BYPASS mode only supports 1.5V max */ + if (idx < 2 && + (ret & BIT(TPS65219_LDO12_BYP_CONFIG)) && + *uV < TPS65219_LDO12_VOLT_BYP_MIN) + return -EINVAL; + + val = tps65219_ldo_volt2val(idx, *uV); + if (val < 0) + return val; + + ret &= ~TPS65219_VOLT_MASK; + ret |= val; + + ret = pmic_reg_write(dev->parent, adr, ret); + + udelay(100); + + return ret; +} + +static int tps65219_ldo_probe(struct udevice *dev) +{ + struct dm_regulator_uclass_plat *uc_pdata; + int idx; + + uc_pdata = dev_get_uclass_plat(dev); + uc_pdata->type = REGULATOR_TYPE_LDO; + + /* idx must be in 1..TPS65219_LDO_NUM */ + idx = dev->driver_data; + if (idx < 1 || idx > TPS65219_LDO_NUM) { + printf("Wrong ID for regulator\n"); + return -EINVAL; + } + + uc_pdata->ctrl_reg = TPS65219_ENABLE_CTRL_REG; + uc_pdata->volt_reg = tps65219_ldo_vout[idx - 1]; + + return 0; +} + +static int tps65219_buck_probe(struct udevice *dev) +{ + struct dm_regulator_uclass_plat *uc_pdata; + int idx; + + uc_pdata = dev_get_uclass_plat(dev); + uc_pdata->type = REGULATOR_TYPE_BUCK; + + /* idx must be in 1..TPS65219_BUCK_NUM */ + idx = dev->driver_data; + if (idx < 1 || idx > TPS65219_BUCK_NUM) { + printf("Wrong ID for regulator\n"); + return -EINVAL; + } + + uc_pdata->ctrl_reg = TPS65219_ENABLE_CTRL_REG; + uc_pdata->volt_reg = tps65219_buck_vout[idx - 1]; + + return 0; +} + +static int ldo_get_value(struct udevice *dev) +{ + int uV; + int ret; + + ret = tps65219_ldo_val(dev, PMIC_OP_GET, &uV); + if (ret) + return ret; + + return uV; +} + +static int ldo_set_value(struct udevice *dev, int uV) +{ + return tps65219_ldo_val(dev, PMIC_OP_SET, &uV); +} + +static int ldo_get_enable(struct udevice *dev) +{ + bool enable = false; + int ret; + + ret = tps65219_ldo_enable(dev, PMIC_OP_GET, &enable); + if (ret) + return ret; + + return enable; +} + +static int ldo_set_enable(struct udevice *dev, bool enable) +{ + return tps65219_ldo_enable(dev, PMIC_OP_SET, &enable); +} + +static int buck_get_value(struct udevice *dev) +{ + int uV; + int ret; + + ret = tps65219_buck_val(dev, PMIC_OP_GET, &uV); + if (ret) + return ret; + + return uV; +} + +static int buck_set_value(struct udevice *dev, int uV) +{ + return tps65219_buck_val(dev, PMIC_OP_SET, &uV); +} + +static int buck_get_enable(struct udevice *dev) +{ + bool enable = false; + int ret; + + ret = tps65219_buck_enable(dev, PMIC_OP_GET, &enable); + if (ret) + return ret; + + return enable; +} + +static int buck_set_enable(struct udevice *dev, bool enable) +{ + return tps65219_buck_enable(dev, PMIC_OP_SET, &enable); +} + +static const struct dm_regulator_ops tps65219_ldo_ops = { + .get_value = ldo_get_value, + .set_value = ldo_set_value, + .get_enable = ldo_get_enable, + .set_enable = ldo_set_enable, +}; + +U_BOOT_DRIVER(tps65219_ldo) = { + .name = TPS65219_LDO_DRIVER, + .id = UCLASS_REGULATOR, + .ops = &tps65219_ldo_ops, + .probe = tps65219_ldo_probe, +}; + +static const struct dm_regulator_ops tps65219_buck_ops = { + .get_value = buck_get_value, + .set_value = buck_set_value, + .get_enable = buck_get_enable, + .set_enable = buck_set_enable, +}; + +U_BOOT_DRIVER(tps65219_buck) = { + .name = TPS65219_BUCK_DRIVER, + .id = UCLASS_REGULATOR, + .ops = &tps65219_buck_ops, + .probe = tps65219_buck_probe, +}; -- cgit v1.1