394 lines
14 KiB
C
394 lines
14 KiB
C
// SPDX-License-Identifier: GPL-2.0
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//
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// tps65219-regulator.c
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//
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// Regulator driver for TPS65219 PMIC
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//
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// Copyright (C) 2022 BayLibre Incorporated - https://www.baylibre.com/
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//
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// This implementation derived from tps65218 authored by
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// "J Keerthy <j-keerthy@ti.com>"
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//
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/device.h>
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#include <linux/init.h>
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#include <linux/err.h>
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#include <linux/platform_device.h>
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#include <linux/of_device.h>
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#include <linux/regmap.h>
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#include <linux/regulator/of_regulator.h>
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#include <linux/regulator/driver.h>
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#include <linux/regulator/machine.h>
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#include <linux/mfd/tps65219.h>
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struct tps65219_regulator_irq_type {
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const char *irq_name;
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const char *regulator_name;
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const char *event_name;
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unsigned long event;
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};
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static struct tps65219_regulator_irq_type tps65219_regulator_irq_types[] = {
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{ "LDO3_SCG", "LDO3", "short circuit to ground", REGULATOR_EVENT_REGULATION_OUT },
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{ "LDO3_OC", "LDO3", "overcurrent", REGULATOR_EVENT_OVER_CURRENT },
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{ "LDO3_UV", "LDO3", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE },
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{ "LDO4_SCG", "LDO4", "short circuit to ground", REGULATOR_EVENT_REGULATION_OUT },
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{ "LDO4_OC", "LDO4", "overcurrent", REGULATOR_EVENT_OVER_CURRENT },
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{ "LDO4_UV", "LDO4", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE },
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{ "LDO1_SCG", "LDO1", "short circuit to ground", REGULATOR_EVENT_REGULATION_OUT },
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{ "LDO1_OC", "LDO1", "overcurrent", REGULATOR_EVENT_OVER_CURRENT },
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{ "LDO1_UV", "LDO1", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE },
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{ "LDO2_SCG", "LDO2", "short circuit to ground", REGULATOR_EVENT_REGULATION_OUT },
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{ "LDO2_OC", "LDO2", "overcurrent", REGULATOR_EVENT_OVER_CURRENT },
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{ "LDO2_UV", "LDO2", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE },
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{ "BUCK3_SCG", "BUCK3", "short circuit to ground", REGULATOR_EVENT_REGULATION_OUT },
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{ "BUCK3_OC", "BUCK3", "overcurrent", REGULATOR_EVENT_OVER_CURRENT },
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{ "BUCK3_NEG_OC", "BUCK3", "negative overcurrent", REGULATOR_EVENT_OVER_CURRENT },
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{ "BUCK3_UV", "BUCK3", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE },
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{ "BUCK1_SCG", "BUCK1", "short circuit to ground", REGULATOR_EVENT_REGULATION_OUT },
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{ "BUCK1_OC", "BUCK1", "overcurrent", REGULATOR_EVENT_OVER_CURRENT },
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{ "BUCK1_NEG_OC", "BUCK1", "negative overcurrent", REGULATOR_EVENT_OVER_CURRENT },
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{ "BUCK1_UV", "BUCK1", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE },
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{ "BUCK2_SCG", "BUCK2", "short circuit to ground", REGULATOR_EVENT_REGULATION_OUT },
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{ "BUCK2_OC", "BUCK2", "overcurrent", REGULATOR_EVENT_OVER_CURRENT },
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{ "BUCK2_NEG_OC", "BUCK2", "negative overcurrent", REGULATOR_EVENT_OVER_CURRENT },
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{ "BUCK2_UV", "BUCK2", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE },
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{ "BUCK1_RV", "BUCK1", "residual voltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
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{ "BUCK2_RV", "BUCK2", "residual voltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
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{ "BUCK3_RV", "BUCK3", "residual voltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
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{ "LDO1_RV", "LDO1", "residual voltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
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{ "LDO2_RV", "LDO2", "residual voltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
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{ "LDO3_RV", "LDO3", "residual voltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
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{ "LDO4_RV", "LDO4", "residual voltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
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{ "BUCK1_RV_SD", "BUCK1", "residual voltage on shutdown",
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REGULATOR_EVENT_OVER_VOLTAGE_WARN },
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{ "BUCK2_RV_SD", "BUCK2", "residual voltage on shutdown",
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REGULATOR_EVENT_OVER_VOLTAGE_WARN },
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{ "BUCK3_RV_SD", "BUCK3", "residual voltage on shutdown",
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REGULATOR_EVENT_OVER_VOLTAGE_WARN },
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{ "LDO1_RV_SD", "LDO1", "residual voltage on shutdown", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
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{ "LDO2_RV_SD", "LDO2", "residual voltage on shutdown", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
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{ "LDO3_RV_SD", "LDO3", "residual voltage on shutdown", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
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{ "LDO4_RV_SD", "LDO4", "residual voltage on shutdown", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
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{ "SENSOR_3_WARM", "SENSOR3", "warm temperature", REGULATOR_EVENT_OVER_TEMP_WARN},
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{ "SENSOR_2_WARM", "SENSOR2", "warm temperature", REGULATOR_EVENT_OVER_TEMP_WARN },
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{ "SENSOR_1_WARM", "SENSOR1", "warm temperature", REGULATOR_EVENT_OVER_TEMP_WARN },
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{ "SENSOR_0_WARM", "SENSOR0", "warm temperature", REGULATOR_EVENT_OVER_TEMP_WARN },
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{ "SENSOR_3_HOT", "SENSOR3", "hot temperature", REGULATOR_EVENT_OVER_TEMP},
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{ "SENSOR_2_HOT", "SENSOR2", "hot temperature", REGULATOR_EVENT_OVER_TEMP },
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{ "SENSOR_1_HOT", "SENSOR1", "hot temperature", REGULATOR_EVENT_OVER_TEMP },
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{ "SENSOR_0_HOT", "SENSOR0", "hot temperature", REGULATOR_EVENT_OVER_TEMP },
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{ "TIMEOUT", "", "", REGULATOR_EVENT_ABORT_VOLTAGE_CHANGE },
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};
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struct tps65219_regulator_irq_data {
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struct device *dev;
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struct tps65219_regulator_irq_type *type;
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struct regulator_dev *rdev;
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};
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#define TPS65219_REGULATOR(_name, _of, _id, _type, _ops, _n, _vr, _vm, _er, \
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_em, _cr, _cm, _lr, _nlr, _delay, _fuv, \
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_ct, _ncl, _bpm) \
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{ \
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.name = _name, \
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.of_match = _of, \
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.regulators_node = of_match_ptr("regulators"), \
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.supply_name = _of, \
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.id = _id, \
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.ops = &(_ops), \
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.n_voltages = _n, \
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.type = _type, \
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.owner = THIS_MODULE, \
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.vsel_reg = _vr, \
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.vsel_mask = _vm, \
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.csel_reg = _cr, \
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.csel_mask = _cm, \
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.curr_table = _ct, \
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.n_current_limits = _ncl, \
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.enable_reg = _er, \
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.enable_mask = _em, \
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.volt_table = NULL, \
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.linear_ranges = _lr, \
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.n_linear_ranges = _nlr, \
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.ramp_delay = _delay, \
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.fixed_uV = _fuv, \
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.bypass_reg = _vr, \
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.bypass_mask = _bpm, \
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} \
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static const struct linear_range bucks_ranges[] = {
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REGULATOR_LINEAR_RANGE(600000, 0x0, 0x1f, 25000),
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REGULATOR_LINEAR_RANGE(1400000, 0x20, 0x33, 100000),
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REGULATOR_LINEAR_RANGE(3400000, 0x34, 0x3f, 0),
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};
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static const struct linear_range ldos_1_2_ranges[] = {
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REGULATOR_LINEAR_RANGE(600000, 0x0, 0x37, 50000),
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REGULATOR_LINEAR_RANGE(3400000, 0x38, 0x3f, 0),
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};
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static const struct linear_range ldos_3_4_ranges[] = {
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REGULATOR_LINEAR_RANGE(1200000, 0x0, 0xC, 0),
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REGULATOR_LINEAR_RANGE(1250000, 0xD, 0x35, 50000),
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REGULATOR_LINEAR_RANGE(3300000, 0x36, 0x3F, 0),
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};
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static int tps65219_set_mode(struct regulator_dev *dev, unsigned int mode)
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{
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struct tps65219 *tps = rdev_get_drvdata(dev);
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switch (mode) {
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case REGULATOR_MODE_NORMAL:
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return regmap_set_bits(tps->regmap, TPS65219_REG_STBY_1_CONFIG,
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dev->desc->enable_mask);
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case REGULATOR_MODE_STANDBY:
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return regmap_clear_bits(tps->regmap,
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TPS65219_REG_STBY_1_CONFIG,
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dev->desc->enable_mask);
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default:
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return -EINVAL;
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}
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}
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static unsigned int tps65219_get_mode(struct regulator_dev *dev)
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{
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struct tps65219 *tps = rdev_get_drvdata(dev);
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unsigned int rid = rdev_get_id(dev);
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int ret, value = 0;
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ret = regmap_read(tps->regmap, TPS65219_REG_STBY_1_CONFIG, &value);
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if (ret) {
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dev_dbg(tps->dev, "%s failed for regulator %s: %d ",
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__func__, dev->desc->name, ret);
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return ret;
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}
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value = (value & BIT(rid)) >> rid;
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if (value)
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return REGULATOR_MODE_STANDBY;
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else
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return REGULATOR_MODE_NORMAL;
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}
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/* Operations permitted on BUCK1/2/3 */
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static const struct regulator_ops tps65219_bucks_ops = {
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.is_enabled = regulator_is_enabled_regmap,
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.enable = regulator_enable_regmap,
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.disable = regulator_disable_regmap,
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.set_mode = tps65219_set_mode,
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.get_mode = tps65219_get_mode,
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.get_voltage_sel = regulator_get_voltage_sel_regmap,
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.set_voltage_sel = regulator_set_voltage_sel_regmap,
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.list_voltage = regulator_list_voltage_linear_range,
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.map_voltage = regulator_map_voltage_linear_range,
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.set_voltage_time_sel = regulator_set_voltage_time_sel,
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};
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/* Operations permitted on LDO1/2 */
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static const struct regulator_ops tps65219_ldos_1_2_ops = {
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.is_enabled = regulator_is_enabled_regmap,
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.enable = regulator_enable_regmap,
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.disable = regulator_disable_regmap,
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.set_mode = tps65219_set_mode,
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.get_mode = tps65219_get_mode,
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.get_voltage_sel = regulator_get_voltage_sel_regmap,
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.set_voltage_sel = regulator_set_voltage_sel_regmap,
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.list_voltage = regulator_list_voltage_linear_range,
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.map_voltage = regulator_map_voltage_linear_range,
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.set_bypass = regulator_set_bypass_regmap,
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.get_bypass = regulator_get_bypass_regmap,
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};
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/* Operations permitted on LDO3/4 */
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static const struct regulator_ops tps65219_ldos_3_4_ops = {
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.is_enabled = regulator_is_enabled_regmap,
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.enable = regulator_enable_regmap,
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.disable = regulator_disable_regmap,
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.set_mode = tps65219_set_mode,
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.get_mode = tps65219_get_mode,
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.get_voltage_sel = regulator_get_voltage_sel_regmap,
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.set_voltage_sel = regulator_set_voltage_sel_regmap,
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.list_voltage = regulator_list_voltage_linear_range,
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.map_voltage = regulator_map_voltage_linear_range,
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};
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static const struct regulator_desc regulators[] = {
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TPS65219_REGULATOR("BUCK1", "buck1", TPS65219_BUCK_1,
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REGULATOR_VOLTAGE, tps65219_bucks_ops, 64,
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TPS65219_REG_BUCK1_VOUT,
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TPS65219_BUCKS_LDOS_VOUT_VSET_MASK,
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TPS65219_REG_ENABLE_CTRL,
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TPS65219_ENABLE_BUCK1_EN_MASK, 0, 0, bucks_ranges,
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3, 4000, 0, NULL, 0, 0),
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TPS65219_REGULATOR("BUCK2", "buck2", TPS65219_BUCK_2,
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REGULATOR_VOLTAGE, tps65219_bucks_ops, 64,
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TPS65219_REG_BUCK2_VOUT,
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TPS65219_BUCKS_LDOS_VOUT_VSET_MASK,
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TPS65219_REG_ENABLE_CTRL,
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TPS65219_ENABLE_BUCK2_EN_MASK, 0, 0, bucks_ranges,
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3, 4000, 0, NULL, 0, 0),
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TPS65219_REGULATOR("BUCK3", "buck3", TPS65219_BUCK_3,
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REGULATOR_VOLTAGE, tps65219_bucks_ops, 64,
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TPS65219_REG_BUCK3_VOUT,
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TPS65219_BUCKS_LDOS_VOUT_VSET_MASK,
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TPS65219_REG_ENABLE_CTRL,
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TPS65219_ENABLE_BUCK3_EN_MASK, 0, 0, bucks_ranges,
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3, 0, 0, NULL, 0, 0),
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TPS65219_REGULATOR("LDO1", "ldo1", TPS65219_LDO_1,
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REGULATOR_VOLTAGE, tps65219_ldos_1_2_ops, 64,
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TPS65219_REG_LDO1_VOUT,
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TPS65219_BUCKS_LDOS_VOUT_VSET_MASK,
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TPS65219_REG_ENABLE_CTRL,
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TPS65219_ENABLE_LDO1_EN_MASK, 0, 0, ldos_1_2_ranges,
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2, 0, 0, NULL, 0, TPS65219_LDOS_BYP_CONFIG_MASK),
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TPS65219_REGULATOR("LDO2", "ldo2", TPS65219_LDO_2,
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REGULATOR_VOLTAGE, tps65219_ldos_1_2_ops, 64,
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TPS65219_REG_LDO2_VOUT,
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TPS65219_BUCKS_LDOS_VOUT_VSET_MASK,
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TPS65219_REG_ENABLE_CTRL,
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TPS65219_ENABLE_LDO2_EN_MASK, 0, 0, ldos_1_2_ranges,
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2, 0, 0, NULL, 0, TPS65219_LDOS_BYP_CONFIG_MASK),
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TPS65219_REGULATOR("LDO3", "ldo3", TPS65219_LDO_3,
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REGULATOR_VOLTAGE, tps65219_ldos_3_4_ops, 64,
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TPS65219_REG_LDO3_VOUT,
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TPS65219_BUCKS_LDOS_VOUT_VSET_MASK,
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TPS65219_REG_ENABLE_CTRL,
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TPS65219_ENABLE_LDO3_EN_MASK, 0, 0, ldos_3_4_ranges,
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3, 0, 0, NULL, 0, 0),
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TPS65219_REGULATOR("LDO4", "ldo4", TPS65219_LDO_4,
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REGULATOR_VOLTAGE, tps65219_ldos_3_4_ops, 64,
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TPS65219_REG_LDO4_VOUT,
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TPS65219_BUCKS_LDOS_VOUT_VSET_MASK,
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TPS65219_REG_ENABLE_CTRL,
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TPS65219_ENABLE_LDO4_EN_MASK, 0, 0, ldos_3_4_ranges,
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3, 0, 0, NULL, 0, 0),
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};
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static irqreturn_t tps65219_regulator_irq_handler(int irq, void *data)
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{
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struct tps65219_regulator_irq_data *irq_data = data;
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if (irq_data->type->event_name[0] == '\0') {
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/* This is the timeout interrupt no specific regulator */
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dev_err(irq_data->dev,
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"System was put in shutdown due to timeout during an active or standby transition.\n");
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return IRQ_HANDLED;
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}
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regulator_notifier_call_chain(irq_data->rdev,
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irq_data->type->event, NULL);
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dev_err(irq_data->dev, "Error IRQ trap %s for %s\n",
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irq_data->type->event_name, irq_data->type->regulator_name);
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return IRQ_HANDLED;
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}
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static int tps65219_get_rdev_by_name(const char *regulator_name,
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struct regulator_dev *rdevtbl[7],
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struct regulator_dev *dev)
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{
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int i;
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for (i = 0; i < ARRAY_SIZE(regulators); i++) {
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if (strcmp(regulator_name, regulators[i].name) == 0) {
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dev = rdevtbl[i];
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return 0;
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}
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}
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return -EINVAL;
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}
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static int tps65219_regulator_probe(struct platform_device *pdev)
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{
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struct tps65219 *tps = dev_get_drvdata(pdev->dev.parent);
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struct regulator_dev *rdev;
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struct regulator_config config = { };
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int i;
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int error;
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int irq;
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struct tps65219_regulator_irq_data *irq_data;
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struct tps65219_regulator_irq_type *irq_type;
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struct regulator_dev *rdevtbl[7];
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config.dev = tps->dev;
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config.driver_data = tps;
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config.regmap = tps->regmap;
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for (i = 0; i < ARRAY_SIZE(regulators); i++) {
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dev_dbg(tps->dev, "%s regul i= %d START", __func__, i);
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rdev = devm_regulator_register(&pdev->dev, ®ulators[i],
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&config);
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if (IS_ERR(rdev)) {
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dev_err(tps->dev, "failed to register %s regulator\n",
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regulators[i].name);
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return PTR_ERR(rdev);
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}
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rdevtbl[i] = rdev;
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dev_dbg(tps->dev, "%s regul i= %d COMPLETED", __func__, i);
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}
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irq_data = devm_kmalloc(tps->dev,
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ARRAY_SIZE(tps65219_regulator_irq_types) *
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sizeof(struct tps65219_regulator_irq_data),
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GFP_KERNEL);
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if (!irq_data)
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return -ENOMEM;
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for (i = 0; i < ARRAY_SIZE(tps65219_regulator_irq_types); ++i) {
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irq_type = &tps65219_regulator_irq_types[i];
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irq = platform_get_irq_byname(pdev, irq_type->irq_name);
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if (irq < 0)
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return -EINVAL;
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irq_data[i].dev = tps->dev;
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irq_data[i].type = irq_type;
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tps65219_get_rdev_by_name(irq_type->regulator_name, rdevtbl, rdev);
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if (IS_ERR(rdev)) {
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dev_err(tps->dev, "Failed to get rdev for %s\n",
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irq_type->regulator_name);
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return -EINVAL;
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}
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irq_data[i].rdev = rdev;
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error = devm_request_threaded_irq(tps->dev, irq, NULL,
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tps65219_regulator_irq_handler,
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IRQF_ONESHOT,
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irq_type->irq_name,
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&irq_data[i]);
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if (error) {
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dev_err(tps->dev, "failed to request %s IRQ %d: %d\n",
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irq_type->irq_name, irq, error);
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return error;
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}
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}
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return 0;
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}
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static const struct platform_device_id tps65219_regulator_id_table[] = {
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{ "tps65219-regulator", },
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{ /* sentinel */ }
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};
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MODULE_DEVICE_TABLE(platform, tps65219_regulator_id_table);
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static struct platform_driver tps65219_regulator_driver = {
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.driver = {
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.name = "tps65219-pmic",
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},
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.probe = tps65219_regulator_probe,
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.id_table = tps65219_regulator_id_table,
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};
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module_platform_driver(tps65219_regulator_driver);
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MODULE_AUTHOR("Jerome Neanne <j-neanne@baylibre.com>");
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MODULE_DESCRIPTION("TPS65219 voltage regulator driver");
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MODULE_ALIAS("platform:tps65219-pmic");
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MODULE_LICENSE("GPL");
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