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- // SPDX-License-Identifier: GPL-2.0+
- /*
- * Copyright (C) EETS GmbH, 2017, Felix Brack <f.brack@eets.ch>
- */
- #include <common.h>
- #include <dm.h>
- #include <log.h>
- #include <power/pmic.h>
- #include <power/regulator.h>
- #include <power/tps65910_pmic.h>
- #define VOUT_CHOICE_COUNT 4
- /*
- * struct regulator_props - Properties of a LDO and VIO SMPS regulator
- *
- * All of these regulators allow setting one out of four output voltages.
- * These output voltages are only achievable when supplying the regulator
- * with a minimum input voltage.
- *
- * @vin_min[]: minimum supply input voltage in uV required to achieve the
- * corresponding vout[] voltage
- * @vout[]: regulator output voltage in uV
- * @reg: I2C register used to set regulator voltage
- */
- struct regulator_props {
- int vin_min[VOUT_CHOICE_COUNT];
- int vout[VOUT_CHOICE_COUNT];
- int reg;
- };
- static const struct regulator_props ldo_props_vdig1 = {
- .vin_min = { 1700000, 2100000, 2700000, 3200000 },
- .vout = { 1200000, 1500000, 1800000, 2700000 },
- .reg = TPS65910_REG_VDIG1
- };
- static const struct regulator_props ldo_props_vdig2 = {
- .vin_min = { 1700000, 1700000, 1700000, 2700000 },
- .vout = { 1000000, 1100000, 1200000, 1800000 },
- .reg = TPS65910_REG_VDIG2
- };
- static const struct regulator_props ldo_props_vpll = {
- .vin_min = { 2700000, 2700000, 2700000, 3000000 },
- .vout = { 1000000, 1100000, 1800000, 2500000 },
- .reg = TPS65910_REG_VPLL
- };
- static const struct regulator_props ldo_props_vdac = {
- .vin_min = { 2700000, 3000000, 3200000, 3200000 },
- .vout = { 1800000, 2600000, 2800000, 2850000 },
- .reg = TPS65910_REG_VDAC
- };
- static const struct regulator_props ldo_props_vaux1 = {
- .vin_min = { 2700000, 3200000, 3200000, 3200000 },
- .vout = { 1800000, 2500000, 2800000, 2850000 },
- .reg = TPS65910_REG_VAUX1
- };
- static const struct regulator_props ldo_props_vaux2 = {
- .vin_min = { 2700000, 3200000, 3200000, 3600000 },
- .vout = { 1800000, 2800000, 2900000, 3300000 },
- .reg = TPS65910_REG_VAUX2
- };
- static const struct regulator_props ldo_props_vaux33 = {
- .vin_min = { 2700000, 2700000, 3200000, 3600000 },
- .vout = { 1800000, 2000000, 2800000, 3300000 },
- .reg = TPS65910_REG_VAUX33
- };
- static const struct regulator_props ldo_props_vmmc = {
- .vin_min = { 2700000, 3200000, 3200000, 3600000 },
- .vout = { 1800000, 2800000, 3000000, 3300000 },
- .reg = TPS65910_REG_VMMC
- };
- static const struct regulator_props smps_props_vio = {
- .vin_min = { 3200000, 3200000, 4000000, 4400000 },
- .vout = { 1500000, 1800000, 2500000, 3300000 },
- .reg = TPS65910_REG_VIO
- };
- /* lookup table of control registers indexed by regulator unit number */
- static const int ctrl_regs[] = {
- TPS65910_REG_VRTC,
- TPS65910_REG_VIO,
- TPS65910_REG_VDD1,
- TPS65910_REG_VDD2,
- TPS65910_REG_VDD3,
- TPS65910_REG_VDIG1,
- TPS65910_REG_VDIG2,
- TPS65910_REG_VPLL,
- TPS65910_REG_VDAC,
- TPS65910_REG_VAUX1,
- TPS65910_REG_VAUX2,
- TPS65910_REG_VAUX33,
- TPS65910_REG_VMMC
- };
- /* supply names as used in DT */
- static const char * const supply_names[] = {
- "vccio-supply",
- "vcc1-supply",
- "vcc2-supply",
- "vcc3-supply",
- "vcc4-supply",
- "vcc5-supply",
- "vcc6-supply",
- "vcc7-supply"
- };
- /* lookup table of regulator supplies indexed by regulator unit number */
- static const int regulator_supplies[] = {
- TPS65910_SUPPLY_VCC7,
- TPS65910_SUPPLY_VCCIO,
- TPS65910_SUPPLY_VCC1,
- TPS65910_SUPPLY_VCC2,
- TPS65910_SUPPLY_VCC7,
- TPS65910_SUPPLY_VCC6,
- TPS65910_SUPPLY_VCC6,
- TPS65910_SUPPLY_VCC5,
- TPS65910_SUPPLY_VCC5,
- TPS65910_SUPPLY_VCC4,
- TPS65910_SUPPLY_VCC4,
- TPS65910_SUPPLY_VCC3,
- TPS65910_SUPPLY_VCC3
- };
- static int get_ctrl_reg_from_unit_addr(const uint unit_addr)
- {
- if (unit_addr < ARRAY_SIZE(ctrl_regs))
- return ctrl_regs[unit_addr];
- return -ENXIO;
- }
- static int tps65910_regulator_get_value(struct udevice *dev,
- const struct regulator_props *rgp)
- {
- int sel, val, vout;
- struct tps65910_regulator_pdata *pdata = dev_get_platdata(dev);
- int vin = pdata->supply;
- val = pmic_reg_read(dev->parent, rgp->reg);
- if (val < 0)
- return val;
- sel = (val & TPS65910_SEL_MASK) >> 2;
- vout = (vin >= *(rgp->vin_min + sel)) ? *(rgp->vout + sel) : 0;
- vout = ((val & TPS65910_SUPPLY_STATE_MASK) == 1) ? vout : 0;
- return vout;
- }
- static int tps65910_ldo_get_value(struct udevice *dev)
- {
- struct tps65910_regulator_pdata *pdata = dev_get_platdata(dev);
- int vin;
- if (!pdata)
- return 0;
- vin = pdata->supply;
- switch (pdata->unit) {
- case TPS65910_UNIT_VRTC:
- /* VRTC is fixed and can't be turned off */
- return (vin >= 2500000) ? 1830000 : 0;
- case TPS65910_UNIT_VDIG1:
- return tps65910_regulator_get_value(dev, &ldo_props_vdig1);
- case TPS65910_UNIT_VDIG2:
- return tps65910_regulator_get_value(dev, &ldo_props_vdig2);
- case TPS65910_UNIT_VPLL:
- return tps65910_regulator_get_value(dev, &ldo_props_vpll);
- case TPS65910_UNIT_VDAC:
- return tps65910_regulator_get_value(dev, &ldo_props_vdac);
- case TPS65910_UNIT_VAUX1:
- return tps65910_regulator_get_value(dev, &ldo_props_vaux1);
- case TPS65910_UNIT_VAUX2:
- return tps65910_regulator_get_value(dev, &ldo_props_vaux2);
- case TPS65910_UNIT_VAUX33:
- return tps65910_regulator_get_value(dev, &ldo_props_vaux33);
- case TPS65910_UNIT_VMMC:
- return tps65910_regulator_get_value(dev, &ldo_props_vmmc);
- default:
- return 0;
- }
- }
- static int tps65910_regulator_set_value(struct udevice *dev,
- const struct regulator_props *ldo,
- int uV)
- {
- int val;
- int sel = 0;
- struct tps65910_regulator_pdata *pdata = dev_get_platdata(dev);
- do {
- /* we only allow exact voltage matches */
- if (uV == *(ldo->vout + sel))
- break;
- } while (++sel < VOUT_CHOICE_COUNT);
- if (sel == VOUT_CHOICE_COUNT)
- return -EINVAL;
- if (pdata->supply < *(ldo->vin_min + sel))
- return -EINVAL;
- val = pmic_reg_read(dev->parent, ldo->reg);
- if (val < 0)
- return val;
- val &= ~TPS65910_SEL_MASK;
- val |= sel << 2;
- return pmic_reg_write(dev->parent, ldo->reg, val);
- }
- static int tps65910_ldo_set_value(struct udevice *dev, int uV)
- {
- struct tps65910_regulator_pdata *pdata = dev_get_platdata(dev);
- int vin = pdata->supply;
- switch (pdata->unit) {
- case TPS65910_UNIT_VRTC:
- /* VRTC is fixed to 1.83V and can't be turned off */
- if (vin < 2500000)
- return -EINVAL;
- return 0;
- case TPS65910_UNIT_VDIG1:
- return tps65910_regulator_set_value(dev, &ldo_props_vdig1, uV);
- case TPS65910_UNIT_VDIG2:
- return tps65910_regulator_set_value(dev, &ldo_props_vdig2, uV);
- case TPS65910_UNIT_VPLL:
- return tps65910_regulator_set_value(dev, &ldo_props_vpll, uV);
- case TPS65910_UNIT_VDAC:
- return tps65910_regulator_set_value(dev, &ldo_props_vdac, uV);
- case TPS65910_UNIT_VAUX1:
- return tps65910_regulator_set_value(dev, &ldo_props_vaux1, uV);
- case TPS65910_UNIT_VAUX2:
- return tps65910_regulator_set_value(dev, &ldo_props_vaux2, uV);
- case TPS65910_UNIT_VAUX33:
- return tps65910_regulator_set_value(dev, &ldo_props_vaux33, uV);
- case TPS65910_UNIT_VMMC:
- return tps65910_regulator_set_value(dev, &ldo_props_vmmc, uV);
- default:
- return 0;
- }
- }
- static int tps65910_get_enable(struct udevice *dev)
- {
- int reg, val;
- struct tps65910_regulator_pdata *pdata = dev_get_platdata(dev);
- reg = get_ctrl_reg_from_unit_addr(pdata->unit);
- if (reg < 0)
- return reg;
- val = pmic_reg_read(dev->parent, reg);
- if (val < 0)
- return val;
- /* bits 1:0 of regulator control register define state */
- return ((val & TPS65910_SUPPLY_STATE_MASK) == 1);
- }
- static int tps65910_set_enable(struct udevice *dev, bool enable)
- {
- int reg;
- uint clr, set;
- struct tps65910_regulator_pdata *pdata = dev_get_platdata(dev);
- reg = get_ctrl_reg_from_unit_addr(pdata->unit);
- if (reg < 0)
- return reg;
- if (enable) {
- clr = TPS65910_SUPPLY_STATE_MASK & ~TPS65910_SUPPLY_STATE_ON;
- set = TPS65910_SUPPLY_STATE_MASK & TPS65910_SUPPLY_STATE_ON;
- } else {
- clr = TPS65910_SUPPLY_STATE_MASK & ~TPS65910_SUPPLY_STATE_OFF;
- set = TPS65910_SUPPLY_STATE_MASK & TPS65910_SUPPLY_STATE_OFF;
- }
- return pmic_clrsetbits(dev->parent, reg, clr, set);
- }
- static int buck_get_vdd1_vdd2_value(struct udevice *dev, int reg_vdd)
- {
- int gain;
- int val = pmic_reg_read(dev, reg_vdd);
- if (val < 0)
- return val;
- gain = (val & TPS65910_GAIN_SEL_MASK) >> 6;
- gain = (gain == 0) ? 1 : gain;
- val = pmic_reg_read(dev, reg_vdd + 1);
- if (val < 0)
- return val;
- if (val & TPS65910_VDD_SR_MASK)
- /* use smart reflex value instead */
- val = pmic_reg_read(dev, reg_vdd + 2);
- if (val < 0)
- return val;
- return (562500 + (val & TPS65910_VDD_SEL_MASK) * 12500) * gain;
- }
- static int tps65910_buck_get_value(struct udevice *dev)
- {
- struct tps65910_regulator_pdata *pdata = dev_get_platdata(dev);
- switch (pdata->unit) {
- case TPS65910_UNIT_VIO:
- return tps65910_regulator_get_value(dev, &smps_props_vio);
- case TPS65910_UNIT_VDD1:
- return buck_get_vdd1_vdd2_value(dev->parent, TPS65910_REG_VDD1);
- case TPS65910_UNIT_VDD2:
- return buck_get_vdd1_vdd2_value(dev->parent, TPS65910_REG_VDD2);
- default:
- return 0;
- }
- }
- static int buck_set_vdd1_vdd2_value(struct udevice *dev, int uV)
- {
- int ret, reg_vdd, gain;
- int val;
- struct dm_regulator_uclass_platdata *uc_pdata;
- struct tps65910_regulator_pdata *pdata = dev_get_platdata(dev);
- switch (pdata->unit) {
- case TPS65910_UNIT_VDD1:
- reg_vdd = TPS65910_REG_VDD1;
- break;
- case TPS65910_UNIT_VDD2:
- reg_vdd = TPS65910_REG_VDD2;
- break;
- default:
- return -EINVAL;
- }
- uc_pdata = dev_get_uclass_platdata(dev);
- /* check setpoint is within limits */
- if (uV < uc_pdata->min_uV) {
- pr_err("voltage %duV for %s too low\n", uV, dev->name);
- return -EINVAL;
- }
- if (uV > uc_pdata->max_uV) {
- pr_err("voltage %duV for %s too high\n", uV, dev->name);
- return -EINVAL;
- }
- val = pmic_reg_read(dev->parent, reg_vdd);
- if (val < 0)
- return val;
- gain = (val & TPS65910_GAIN_SEL_MASK) >> 6;
- gain = (gain == 0) ? 1 : gain;
- val = ((uV / gain) - 562500) / 12500;
- if (val < TPS65910_VDD_SEL_MIN || val > TPS65910_VDD_SEL_MAX)
- /*
- * Neither do we change the gain, nor do we allow shutdown or
- * any approximate value (for now)
- */
- return -EPERM;
- val &= TPS65910_VDD_SEL_MASK;
- ret = pmic_reg_write(dev->parent, reg_vdd + 1, val);
- if (ret)
- return ret;
- return 0;
- }
- static int tps65910_buck_set_value(struct udevice *dev, int uV)
- {
- struct tps65910_regulator_pdata *pdata = dev_get_platdata(dev);
- if (pdata->unit == TPS65910_UNIT_VIO)
- return tps65910_regulator_set_value(dev, &smps_props_vio, uV);
- return buck_set_vdd1_vdd2_value(dev, uV);
- }
- static int tps65910_boost_get_value(struct udevice *dev)
- {
- int vout;
- struct tps65910_regulator_pdata *pdata = dev_get_platdata(dev);
- vout = (pdata->supply >= 3000000) ? 5000000 : 0;
- return vout;
- }
- static int tps65910_regulator_ofdata_to_platdata(struct udevice *dev)
- {
- struct udevice *supply;
- int ret;
- const char *supply_name;
- struct tps65910_regulator_pdata *pdata = dev_get_platdata(dev);
- pdata->unit = dev_get_driver_data(dev);
- if (pdata->unit > TPS65910_UNIT_VMMC)
- return -EINVAL;
- supply_name = supply_names[regulator_supplies[pdata->unit]];
- debug("Looking up supply power %s\n", supply_name);
- ret = device_get_supply_regulator(dev->parent, supply_name, &supply);
- if (ret) {
- debug(" missing supply power %s\n", supply_name);
- return ret;
- }
- pdata->supply = regulator_get_value(supply);
- if (pdata->supply < 0) {
- debug(" invalid supply voltage for regulator %s\n",
- supply->name);
- return -EINVAL;
- }
- return 0;
- }
- static const struct dm_regulator_ops tps65910_boost_ops = {
- .get_value = tps65910_boost_get_value,
- .get_enable = tps65910_get_enable,
- .set_enable = tps65910_set_enable,
- };
- U_BOOT_DRIVER(tps65910_boost) = {
- .name = TPS65910_BOOST_DRIVER,
- .id = UCLASS_REGULATOR,
- .ops = &tps65910_boost_ops,
- .platdata_auto_alloc_size = sizeof(struct tps65910_regulator_pdata),
- .ofdata_to_platdata = tps65910_regulator_ofdata_to_platdata,
- };
- static const struct dm_regulator_ops tps65910_buck_ops = {
- .get_value = tps65910_buck_get_value,
- .set_value = tps65910_buck_set_value,
- .get_enable = tps65910_get_enable,
- .set_enable = tps65910_set_enable,
- };
- U_BOOT_DRIVER(tps65910_buck) = {
- .name = TPS65910_BUCK_DRIVER,
- .id = UCLASS_REGULATOR,
- .ops = &tps65910_buck_ops,
- .platdata_auto_alloc_size = sizeof(struct tps65910_regulator_pdata),
- .ofdata_to_platdata = tps65910_regulator_ofdata_to_platdata,
- };
- static const struct dm_regulator_ops tps65910_ldo_ops = {
- .get_value = tps65910_ldo_get_value,
- .set_value = tps65910_ldo_set_value,
- .get_enable = tps65910_get_enable,
- .set_enable = tps65910_set_enable,
- };
- U_BOOT_DRIVER(tps65910_ldo) = {
- .name = TPS65910_LDO_DRIVER,
- .id = UCLASS_REGULATOR,
- .ops = &tps65910_ldo_ops,
- .platdata_auto_alloc_size = sizeof(struct tps65910_regulator_pdata),
- .ofdata_to_platdata = tps65910_regulator_ofdata_to_platdata,
- };
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