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https://github.com/AsahiLinux/u-boot
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power: regulator: tps80031: add regulator support
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>
This commit is contained in:
Svyatoslav Ryhel
Tom Rini
parent
51201e49b0
commit
a70a75aa6c
3 changed files with 356 additions and 0 deletions
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@ -356,6 +356,14 @@ config DM_REGULATOR_TPS62360
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implements the get/set api for value only, as the power line is
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always on.
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config DM_REGULATOR_TPS80031
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bool "Enable driver for TPS80031/TPS80032 PMIC regulators"
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depends on DM_PMIC_TPS80031
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---help---
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This enables implementation of driver-model regulator uclass
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features for TPS80031/TPS80032 PMICs. The driver implements
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get/set api for: value and enable.
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config DM_REGULATOR_STPMIC1
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bool "Enable driver for STPMIC1 regulators"
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depends on DM_REGULATOR && PMIC_STPMIC1
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@ -33,6 +33,7 @@ obj-$(CONFIG_$(SPL_)DM_REGULATOR_LP87565) += lp87565_regulator.o
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obj-$(CONFIG_$(SPL_)DM_REGULATOR_STM32_VREFBUF) += stm32-vrefbuf.o
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obj-$(CONFIG_DM_REGULATOR_TPS65910) += tps65910_regulator.o
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obj-$(CONFIG_DM_REGULATOR_TPS62360) += tps62360_regulator.o
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obj-$(CONFIG_$(SPL_)DM_REGULATOR_TPS80031) += tps80031_regulator.o
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obj-$(CONFIG_$(SPL_)DM_REGULATOR_STPMIC1) += stpmic1.o
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obj-$(CONFIG_DM_REGULATOR_TPS65941) += tps65941_regulator.o
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obj-$(CONFIG_DM_REGULATOR_SCMI) += scmi_regulator.o
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347
drivers/power/regulator/tps80031_regulator.c
Normal file
347
drivers/power/regulator/tps80031_regulator.c
Normal file
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@ -0,0 +1,347 @@
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// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright(C) 2023 Svyatoslav Ryhel <clamor95@gmail.com>
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*/
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#include <dm.h>
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#include <power/pmic.h>
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#include <power/regulator.h>
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#include <power/tps80031.h>
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static const char tps80031_smps_reg[][TPS80031_SMPS_NUM] = {
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{ 0x54, 0x5a, 0x66, 0x42, 0x48 },
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{ 0x56, 0x5c, 0x68, 0x44, 0x4a },
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{ BIT(3), BIT(4), BIT(6), BIT(0), BIT(1) },
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};
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static const char tps80031_ldo_reg[][TPS80031_LDO_NUM] = {
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{ 0x9e, 0x86, 0x8e, 0x8a, 0x9a, 0x92, 0xa6, 0x96, 0xa2 },
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{ 0x9f, 0x87, 0x8f, 0x8b, 0x9b, 0x93, 0xa7, 0x97, 0xa3 },
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};
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static int tps80031_regulator_enable(struct udevice *dev, int op, bool *enable)
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{
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struct dm_regulator_uclass_plat *uc_pdata =
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dev_get_uclass_plat(dev);
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u32 adr = uc_pdata->ctrl_reg;
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int val, ret;
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val = pmic_reg_read(dev->parent, adr);
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if (val < 0)
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return val;
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if (op == PMIC_OP_GET) {
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if (val & REGULATOR_MODE_ON)
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*enable = true;
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else
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*enable = false;
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return 0;
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} else if (op == PMIC_OP_SET) {
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val &= ~REGULATOR_STATUS_MASK;
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if (*enable)
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val |= REGULATOR_MODE_ON;
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ret = pmic_reg_write(dev->parent, adr, val);
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if (ret)
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return ret;
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}
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return 0;
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}
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static int tps80031_get_enable(struct udevice *dev)
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{
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bool enable = false;
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int ret;
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ret = tps80031_regulator_enable(dev, PMIC_OP_GET, &enable);
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if (ret)
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return ret;
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return enable;
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}
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static int tps80031_set_enable(struct udevice *dev, bool enable)
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{
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return tps80031_regulator_enable(dev, PMIC_OP_SET, &enable);
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}
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/**
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* tps80031_ldo_volt2hex() - convert voltage in uV into
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* applicable to register hex value
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*
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* @uV: voltage in uV
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*
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* Return: voltage in hex on success, -ve on failure
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*/
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static int tps80031_ldo_volt2hex(int uV)
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{
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if (uV > LDO_VOLT_MAX)
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return -EINVAL;
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if (uV < LDO_VOLT_MIN)
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uV = LDO_VOLT_MIN;
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return DIV_ROUND_UP(uV - LDO_VOLT_BASE, 102000);
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}
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/**
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* tps80031_ldo_hex2volt() - convert register hex value into
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* actual voltage in uV
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*
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* @hex: hex value of register
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*
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* Return: voltage in uV on success, -ve on failure
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*/
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static int tps80031_ldo_hex2volt(int hex)
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{
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if (hex > LDO_VOLT_MAX_HEX)
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return -EINVAL;
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if (hex < LDO_VOLT_MIN_HEX)
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hex = LDO_VOLT_MIN_HEX;
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return LDO_VOLT_BASE + hex * 102000;
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}
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static int tps80031_ldo_val(struct udevice *dev, int op, int *uV)
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{
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struct dm_regulator_uclass_plat *uc_pdata =
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dev_get_uclass_plat(dev);
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u32 adr = uc_pdata->volt_reg;
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int val, hex, ret;
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val = pmic_reg_read(dev->parent, adr);
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if (val < 0)
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return val;
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if (op == PMIC_OP_GET) {
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*uV = 0;
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ret = tps80031_ldo_hex2volt(val & LDO_VOLT_MASK);
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if (ret < 0)
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return ret;
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*uV = ret;
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return 0;
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}
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hex = tps80031_ldo_volt2hex(*uV);
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if (hex < 0)
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return hex;
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val &= ~LDO_VOLT_MASK;
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return pmic_reg_write(dev->parent, adr, val | hex);
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}
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static int tps80031_ldo_probe(struct udevice *dev)
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{
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struct dm_regulator_uclass_plat *uc_pdata =
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dev_get_uclass_plat(dev);
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uc_pdata->type = REGULATOR_TYPE_LDO;
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/* check for ldoln and ldousb cases */
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if (!strcmp("ldoln", dev->name)) {
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uc_pdata->ctrl_reg = tps80031_ldo_reg[CTRL][7];
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uc_pdata->volt_reg = tps80031_ldo_reg[VOLT][7];
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return 0;
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}
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if (!strcmp("ldousb", dev->name)) {
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uc_pdata->ctrl_reg = tps80031_ldo_reg[CTRL][8];
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uc_pdata->volt_reg = tps80031_ldo_reg[VOLT][8];
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return 0;
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}
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if (dev->driver_data > 0) {
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u8 idx = dev->driver_data - 1;
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uc_pdata->ctrl_reg = tps80031_ldo_reg[CTRL][idx];
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uc_pdata->volt_reg = tps80031_ldo_reg[VOLT][idx];
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}
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return 0;
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}
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static int ldo_get_value(struct udevice *dev)
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{
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int uV;
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int ret;
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ret = tps80031_ldo_val(dev, PMIC_OP_GET, &uV);
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if (ret)
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return ret;
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return uV;
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}
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static int ldo_set_value(struct udevice *dev, int uV)
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{
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return tps80031_ldo_val(dev, PMIC_OP_SET, &uV);
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}
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static const struct dm_regulator_ops tps80031_ldo_ops = {
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.get_value = ldo_get_value,
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.set_value = ldo_set_value,
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.get_enable = tps80031_get_enable,
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.set_enable = tps80031_set_enable,
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};
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U_BOOT_DRIVER(tps80031_ldo) = {
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.name = TPS80031_LDO_DRIVER,
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.id = UCLASS_REGULATOR,
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.ops = &tps80031_ldo_ops,
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.probe = tps80031_ldo_probe,
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};
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struct tps80031_smps_priv {
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int flags;
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};
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/* DCDC voltages for the selector of 0x39 to 0x3F */
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static int tps80031_dcdc_voltages[5] = {
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1350000, 1500000, 1800000, 1900000, 2100000
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};
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/**
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* tps80031_smps_volt2hex() - convert voltage in uV into
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* applicable to register hex value
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*
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* @base: base voltage in uV
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* @uV: voltage in uV
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*
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* Return: voltage in hex on success, -ve on failure
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*/
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static int tps80031_smps_volt2hex(u32 base, int uV)
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{
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int i;
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if (uV < base)
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return 1;
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if (uV > SMPS_VOLT_LINEAR) {
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for (i = 0; i < ARRAY_SIZE(tps80031_dcdc_voltages); i++)
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if (uV <= tps80031_dcdc_voltages[i])
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break;
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return SMPS_VOLT_NLINEAR_HEX + i;
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}
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return DIV_ROUND_UP(uV - base, 12500);
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}
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/**
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* tps80031_smps_hex2volt() - convert register hex value into
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* actual voltage in uV
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*
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* @base: base voltage in uV
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* @hex: hex value of register
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*
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* Return: voltage in uV on success, -ve on failure
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*/
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static int tps80031_smps_hex2volt(u32 base, int hex)
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{
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if (!hex)
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return 0;
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/* if reg value exceeds linear scale use table */
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if (hex > SMPS_VOLT_LINEAR_HEX)
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return tps80031_dcdc_voltages[hex - SMPS_VOLT_LINEAR_HEX];
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else
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return base + hex * 12500;
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}
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static int tps80031_smps_val(struct udevice *dev, int op, int *uV)
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{
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struct dm_regulator_uclass_plat *uc_pdata =
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dev_get_uclass_plat(dev);
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struct tps80031_smps_priv *priv = dev_get_priv(dev);
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u32 adr = uc_pdata->volt_reg;
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int base, val, hex, ret;
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/* If offset flag was set then base voltage is higher */
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if (priv->flags & TPS80031_OFFSET_FLAG)
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base = SMPS_VOLT_BASE_OFFSET;
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else
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base = SMPS_VOLT_BASE;
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val = pmic_reg_read(dev->parent, adr);
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if (val < 0)
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return val;
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if (op == PMIC_OP_GET) {
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*uV = 0;
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ret = tps80031_smps_hex2volt(base, val & SMPS_VOLT_MASK);
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if (ret < 0)
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return ret;
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*uV = ret;
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return 0;
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}
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hex = tps80031_smps_volt2hex(base, *uV);
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if (hex < 0)
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return hex;
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val &= ~SMPS_VOLT_MASK;
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return pmic_reg_write(dev->parent, adr, val | hex);
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}
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static int tps80031_smps_probe(struct udevice *dev)
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{
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struct dm_regulator_uclass_plat *uc_pdata =
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dev_get_uclass_plat(dev);
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struct tps80031_smps_priv *priv = dev_get_priv(dev);
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int idx = dev->driver_data - 1;
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int val;
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uc_pdata->type = REGULATOR_TYPE_BUCK;
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uc_pdata->ctrl_reg = tps80031_smps_reg[CTRL][idx];
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uc_pdata->volt_reg = tps80031_smps_reg[VOLT][idx];
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/* Determine if smps regulator uses higher voltage */
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val = pmic_reg_read(dev->parent, TPS80031_SMPS_OFFSET);
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if (val & tps80031_smps_reg[OFFSET][idx])
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priv->flags |= TPS80031_OFFSET_FLAG;
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return 0;
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}
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static int smps_get_value(struct udevice *dev)
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{
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int uV;
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int ret;
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ret = tps80031_smps_val(dev, PMIC_OP_GET, &uV);
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if (ret)
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return ret;
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return uV;
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}
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static int smps_set_value(struct udevice *dev, int uV)
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{
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return tps80031_smps_val(dev, PMIC_OP_SET, &uV);
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}
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static const struct dm_regulator_ops tps80031_smps_ops = {
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.get_value = smps_get_value,
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.set_value = smps_set_value,
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.get_enable = tps80031_get_enable,
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.set_enable = tps80031_set_enable,
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};
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U_BOOT_DRIVER(tps80031_smps) = {
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.name = TPS80031_SMPS_DRIVER,
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.id = UCLASS_REGULATOR,
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.ops = &tps80031_smps_ops,
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.probe = tps80031_smps_probe,
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.priv_auto = sizeof(struct tps80031_smps_priv),
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};
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