mirror of
https://github.com/AsahiLinux/u-boot
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99699a7707
i2c is not used that's why header is not needed. Signed-off-by: Michal Simek <michal.simek@amd.com>
379 lines
7.4 KiB
C
379 lines
7.4 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* (C) Copyright 2022 BayLibre, SAS
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* Author: Neil Armstrong <narmstrong@baylibre.com>
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*
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*/
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#include <common.h>
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#include <fdtdec.h>
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#include <errno.h>
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#include <dm.h>
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#include <log.h>
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#include <linux/delay.h>
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#include <power/pmic.h>
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#include <power/regulator.h>
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#include <power/tps65219.h>
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static const unsigned int tps65219_buck_vout[TPS65219_BUCK_NUM] = {
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[0] = TPS65219_BUCK1_VOUT_REG,
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[1] = TPS65219_BUCK2_VOUT_REG,
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[2] = TPS65219_BUCK3_VOUT_REG
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};
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static const unsigned int tps65219_ldo_vout[TPS65219_LDO_NUM] = {
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[0] = TPS65219_LDO1_VOUT_REG,
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[1] = TPS65219_LDO2_VOUT_REG,
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[2] = TPS65219_LDO3_VOUT_REG,
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[3] = TPS65219_LDO4_VOUT_REG,
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};
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static int tps65219_reg_enable(struct udevice *dev, unsigned int adr, int idx,
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int op, bool *enable)
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{
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int ret;
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ret = pmic_reg_read(dev->parent, adr);
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if (ret < 0)
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return ret;
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if (op == PMIC_OP_GET) {
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if (ret & BIT(idx))
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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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if (*enable)
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ret |= BIT(idx);
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else
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ret &= ~BIT(idx);
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ret = pmic_reg_write(dev->parent, adr, ret);
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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 tps65219_buck_enable(struct udevice *dev, int op, bool *enable)
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{
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unsigned int adr;
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struct dm_regulator_uclass_plat *uc_pdata;
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int idx;
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idx = dev->driver_data - 1;
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uc_pdata = dev_get_uclass_plat(dev);
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adr = uc_pdata->ctrl_reg;
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return tps65219_reg_enable(dev, adr, idx, op, enable);
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}
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static int tps65219_buck_volt2val(int uV)
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{
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if (uV > TPS65219_BUCK_VOLT_MAX)
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return -EINVAL;
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else if (uV >= 1400000)
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return (uV - 1400000) / 100000 + 0x20;
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else if (uV >= 600000)
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return (uV - 600000) / 25000 + 0x00;
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else
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return -EINVAL;
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}
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static int tps65219_buck_val2volt(int val)
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{
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if (val > TPS65219_VOLT_MASK)
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return -EINVAL;
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else if (val > 0x34)
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return TPS65219_BUCK_VOLT_MAX;
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else if (val > 0x20)
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return 1400000 + (val - 0x20) * 100000;
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else if (val >= 0)
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return 600000 + val * 25000;
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else
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return -EINVAL;
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}
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static int tps65219_buck_val(struct udevice *dev, int op, int *uV)
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{
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unsigned int adr;
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int ret, val;
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struct dm_regulator_uclass_plat *uc_pdata;
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uc_pdata = dev_get_uclass_plat(dev);
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adr = uc_pdata->volt_reg;
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ret = pmic_reg_read(dev->parent, adr);
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if (ret < 0)
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return ret;
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if (op == PMIC_OP_GET) {
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*uV = 0;
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ret &= TPS65219_VOLT_MASK;
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ret = tps65219_buck_val2volt(ret);
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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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val = tps65219_buck_volt2val(*uV);
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if (val < 0)
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return val;
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ret &= ~TPS65219_VOLT_MASK;
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ret |= val;
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ret = pmic_reg_write(dev->parent, adr, ret);
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udelay(100);
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return ret;
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}
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static int tps65219_ldo_enable(struct udevice *dev, int op, bool *enable)
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{
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unsigned int adr;
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struct dm_regulator_uclass_plat *uc_pdata;
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int idx;
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idx = TPS65219_BUCK_NUM + (dev->driver_data - 1);
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uc_pdata = dev_get_uclass_plat(dev);
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adr = uc_pdata->ctrl_reg;
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return tps65219_reg_enable(dev, adr, idx, op, enable);
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}
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static int tps65219_ldo_volt2val(int idx, int uV)
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{
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int base = TPS65219_LDO12_VOLT_MIN;
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int max = TPS65219_LDO12_VOLT_MAX;
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if (idx > 1) {
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base = TPS65219_LDO34_VOLT_MIN;
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max = TPS65219_LDO34_VOLT_MAX;
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}
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if (uV > max)
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return -EINVAL;
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else if (uV >= base)
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return (uV - TPS65219_LDO12_VOLT_MIN) / 50000;
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else
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return -EINVAL;
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}
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static int tps65219_ldo_val2volt(int idx, int val)
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{
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int reg_base = TPS65219_LDO12_VOLT_REG_MIN;
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int reg_max = TPS65219_LDO12_VOLT_REG_MAX;
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int base = TPS65219_LDO12_VOLT_MIN;
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int max = TPS65219_LDO12_VOLT_MAX;
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if (idx > 1) {
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base = TPS65219_LDO34_VOLT_MIN;
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max = TPS65219_LDO34_VOLT_MAX;
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reg_base = TPS65219_LDO34_VOLT_REG_MIN;
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reg_max = TPS65219_LDO34_VOLT_REG_MAX;
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}
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if (val > TPS65219_VOLT_MASK || val < 0)
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return -EINVAL;
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else if (val >= reg_max)
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return max;
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else if (val <= reg_base)
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return base;
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else if (val >= 0)
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return TPS65219_LDO12_VOLT_MIN + (50000 * val);
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else
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return -EINVAL;
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}
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static int tps65219_ldo_val(struct udevice *dev, int op, int *uV)
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{
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unsigned int adr;
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int ret, val;
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struct dm_regulator_uclass_plat *uc_pdata;
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int idx;
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idx = dev->driver_data - 1;
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uc_pdata = dev_get_uclass_plat(dev);
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adr = uc_pdata->volt_reg;
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ret = pmic_reg_read(dev->parent, adr);
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if (ret < 0)
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return ret;
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if (op == PMIC_OP_GET) {
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*uV = 0;
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ret &= TPS65219_VOLT_MASK;
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ret = tps65219_ldo_val2volt(idx, ret);
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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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/* LDO1 & LDO2 in BYPASS mode only supports 1.5V max */
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if (idx < 2 &&
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(ret & BIT(TPS65219_LDO12_BYP_CONFIG)) &&
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*uV < TPS65219_LDO12_VOLT_BYP_MIN)
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return -EINVAL;
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val = tps65219_ldo_volt2val(idx, *uV);
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if (val < 0)
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return val;
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ret &= ~TPS65219_VOLT_MASK;
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ret |= val;
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ret = pmic_reg_write(dev->parent, adr, ret);
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udelay(100);
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return ret;
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}
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static int tps65219_ldo_probe(struct udevice *dev)
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{
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struct dm_regulator_uclass_plat *uc_pdata;
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int idx;
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uc_pdata = dev_get_uclass_plat(dev);
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uc_pdata->type = REGULATOR_TYPE_LDO;
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/* idx must be in 1..TPS65219_LDO_NUM */
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idx = dev->driver_data;
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if (idx < 1 || idx > TPS65219_LDO_NUM) {
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printf("Wrong ID for regulator\n");
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return -EINVAL;
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}
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uc_pdata->ctrl_reg = TPS65219_ENABLE_CTRL_REG;
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uc_pdata->volt_reg = tps65219_ldo_vout[idx - 1];
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return 0;
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}
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static int tps65219_buck_probe(struct udevice *dev)
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{
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struct dm_regulator_uclass_plat *uc_pdata;
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int idx;
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uc_pdata = dev_get_uclass_plat(dev);
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uc_pdata->type = REGULATOR_TYPE_BUCK;
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/* idx must be in 1..TPS65219_BUCK_NUM */
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idx = dev->driver_data;
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if (idx < 1 || idx > TPS65219_BUCK_NUM) {
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printf("Wrong ID for regulator\n");
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return -EINVAL;
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}
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uc_pdata->ctrl_reg = TPS65219_ENABLE_CTRL_REG;
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uc_pdata->volt_reg = tps65219_buck_vout[idx - 1];
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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 = tps65219_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 tps65219_ldo_val(dev, PMIC_OP_SET, &uV);
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}
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static int ldo_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 = tps65219_ldo_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 ldo_set_enable(struct udevice *dev, bool enable)
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{
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return tps65219_ldo_enable(dev, PMIC_OP_SET, &enable);
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}
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static int buck_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 = tps65219_buck_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 buck_set_value(struct udevice *dev, int uV)
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{
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return tps65219_buck_val(dev, PMIC_OP_SET, &uV);
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}
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static int buck_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 = tps65219_buck_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 buck_set_enable(struct udevice *dev, bool enable)
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{
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return tps65219_buck_enable(dev, PMIC_OP_SET, &enable);
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}
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static const struct dm_regulator_ops tps65219_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 = ldo_get_enable,
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.set_enable = ldo_set_enable,
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};
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U_BOOT_DRIVER(tps65219_ldo) = {
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.name = TPS65219_LDO_DRIVER,
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.id = UCLASS_REGULATOR,
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.ops = &tps65219_ldo_ops,
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.probe = tps65219_ldo_probe,
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};
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static const struct dm_regulator_ops tps65219_buck_ops = {
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.get_value = buck_get_value,
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.set_value = buck_set_value,
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.get_enable = buck_get_enable,
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.set_enable = buck_set_enable,
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};
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U_BOOT_DRIVER(tps65219_buck) = {
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.name = TPS65219_BUCK_DRIVER,
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.id = UCLASS_REGULATOR,
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.ops = &tps65219_buck_ops,
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.probe = tps65219_buck_probe,
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};
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