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3a5e6e4985
Some configurations differ between chip variants, e,g. the register to control the on of state of LDOA1 and SWB2. Thus, it is necessary to choose the correct configuration for a dedicated device. If the wrong configuration was used, the LDOA1 output that was disabled by the bootloader was enabled in Kernel again. Each chip variant gets its dedicated configuration selected by the chip ID previously collected from MFD probe function. The VTT enum value (tps65086_regulators) is shifted because not all chip variants have a separate SWB2 switch. Sometimes they are merged. So the configuration possibilities differ, thus the regulator configuration arrays have a different length. Signed-off-by: Andre Werner <andre.werner@systec-electronic.com> Link: https://lore.kernel.org/r/20230818083721.29790-5-andre.werner@systec-electronic.com Signed-off-by: Mark Brown <broonie@kernel.org>
420 lines
15 KiB
C
420 lines
15 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Copyright (C) 2015 Texas Instruments Incorporated - https://www.ti.com/
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*
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* Author: Andrew F. Davis <afd@ti.com>
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*
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* Based on the TPS65912 driver
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*/
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#include <linux/module.h>
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#include <linux/of.h>
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#include <linux/platform_device.h>
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#include <linux/regulator/driver.h>
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#include <linux/mfd/tps65086.h>
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enum tps65086_regulators { BUCK1, BUCK2, BUCK3, BUCK4, BUCK5, BUCK6, LDOA1,
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LDOA2, LDOA3, VTT, SWA1, SWB1, SWB2 };
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/* Selector for regulator configuration regarding PMIC chip ID. */
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enum tps65086_ids {
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TPS6508640 = 0,
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TPS65086401,
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TPS6508641,
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TPS65086470,
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};
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#define TPS65086_REGULATOR(_name, _of, _id, _nv, _vr, _vm, _er, _em, _lr, _dr, _dm) \
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[_id] = { \
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.desc = { \
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.name = _name, \
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.of_match = of_match_ptr(_of), \
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.regulators_node = "regulators", \
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.of_parse_cb = tps65086_of_parse_cb, \
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.id = _id, \
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.ops = ®_ops, \
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.n_voltages = _nv, \
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.type = REGULATOR_VOLTAGE, \
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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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.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 = ARRAY_SIZE(_lr), \
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}, \
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.decay_reg = _dr, \
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.decay_mask = _dm, \
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}
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#define TPS65086_SWITCH(_name, _of, _id, _er, _em) \
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[_id] = { \
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.desc = { \
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.name = _name, \
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.of_match = of_match_ptr(_of), \
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.regulators_node = "regulators", \
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.of_parse_cb = tps65086_of_parse_cb, \
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.id = _id, \
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.ops = &switch_ops, \
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.type = REGULATOR_VOLTAGE, \
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.owner = THIS_MODULE, \
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.enable_reg = _er, \
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.enable_mask = _em, \
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}, \
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}
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#define TPS65086_REGULATOR_CONFIG(_chip_id, _config) \
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[_chip_id] = { \
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.config = _config, \
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.num_elems = ARRAY_SIZE(_config), \
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}
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struct tps65086_regulator {
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struct regulator_desc desc;
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unsigned int decay_reg;
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unsigned int decay_mask;
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};
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struct tps65086_regulator_config {
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struct tps65086_regulator * const config;
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const unsigned int num_elems;
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};
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static const struct linear_range tps65086_10mv_ranges[] = {
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REGULATOR_LINEAR_RANGE(0, 0x0, 0x0, 0),
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REGULATOR_LINEAR_RANGE(410000, 0x1, 0x7F, 10000),
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};
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static const struct linear_range tps65086_buck126_25mv_ranges[] = {
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REGULATOR_LINEAR_RANGE(0, 0x0, 0x0, 0),
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REGULATOR_LINEAR_RANGE(1000000, 0x1, 0x18, 0),
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REGULATOR_LINEAR_RANGE(1025000, 0x19, 0x7F, 25000),
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};
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static const struct linear_range tps65086_buck345_25mv_ranges[] = {
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REGULATOR_LINEAR_RANGE(0, 0x0, 0x0, 0),
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REGULATOR_LINEAR_RANGE(425000, 0x1, 0x7F, 25000),
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};
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static const struct linear_range tps65086_ldoa1_ranges[] = {
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REGULATOR_LINEAR_RANGE(1350000, 0x0, 0x0, 0),
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REGULATOR_LINEAR_RANGE(1500000, 0x1, 0x7, 100000),
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REGULATOR_LINEAR_RANGE(2300000, 0x8, 0xB, 100000),
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REGULATOR_LINEAR_RANGE(2850000, 0xC, 0xD, 150000),
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REGULATOR_LINEAR_RANGE(3300000, 0xE, 0xE, 0),
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};
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static const struct linear_range tps65086_ldoa23_ranges[] = {
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REGULATOR_LINEAR_RANGE(700000, 0x0, 0xD, 50000),
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REGULATOR_LINEAR_RANGE(1400000, 0xE, 0xF, 100000),
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};
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/* Operations permitted on regulators */
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static const struct regulator_ops reg_ops = {
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.enable = regulator_enable_regmap,
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.disable = regulator_disable_regmap,
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.is_enabled = regulator_is_enabled_regmap,
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.set_voltage_sel = regulator_set_voltage_sel_regmap,
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.map_voltage = regulator_map_voltage_linear_range,
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.get_voltage_sel = regulator_get_voltage_sel_regmap,
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.list_voltage = regulator_list_voltage_linear_range,
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};
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/* Operations permitted on load switches */
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static const struct regulator_ops switch_ops = {
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.enable = regulator_enable_regmap,
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.disable = regulator_disable_regmap,
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.is_enabled = regulator_is_enabled_regmap,
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};
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static int tps65086_of_parse_cb(struct device_node *dev,
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const struct regulator_desc *desc,
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struct regulator_config *config);
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static struct tps65086_regulator tps6508640_regulator_config[] = {
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TPS65086_REGULATOR("BUCK1", "buck1", BUCK1, 0x80, TPS65086_BUCK1CTRL,
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BUCK_VID_MASK, TPS65086_BUCK123CTRL, BIT(0),
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tps65086_10mv_ranges, TPS65086_BUCK1CTRL,
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BIT(0)),
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TPS65086_REGULATOR("BUCK2", "buck2", BUCK2, 0x80, TPS65086_BUCK2CTRL,
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BUCK_VID_MASK, TPS65086_BUCK123CTRL, BIT(1),
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tps65086_10mv_ranges, TPS65086_BUCK2CTRL,
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BIT(0)),
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TPS65086_REGULATOR("BUCK3", "buck3", BUCK3, 0x80, TPS65086_BUCK3VID,
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BUCK_VID_MASK, TPS65086_BUCK123CTRL, BIT(2),
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tps65086_10mv_ranges, TPS65086_BUCK3DECAY,
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BIT(0)),
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TPS65086_REGULATOR("BUCK4", "buck4", BUCK4, 0x80, TPS65086_BUCK4VID,
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BUCK_VID_MASK, TPS65086_BUCK4CTRL, BIT(0),
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tps65086_10mv_ranges, TPS65086_BUCK4VID,
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BIT(0)),
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TPS65086_REGULATOR("BUCK5", "buck5", BUCK5, 0x80, TPS65086_BUCK5VID,
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BUCK_VID_MASK, TPS65086_BUCK5CTRL, BIT(0),
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tps65086_10mv_ranges, TPS65086_BUCK5CTRL,
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BIT(0)),
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TPS65086_REGULATOR("BUCK6", "buck6", BUCK6, 0x80, TPS65086_BUCK6VID,
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BUCK_VID_MASK, TPS65086_BUCK6CTRL, BIT(0),
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tps65086_10mv_ranges, TPS65086_BUCK6CTRL,
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BIT(0)),
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TPS65086_REGULATOR("LDOA1", "ldoa1", LDOA1, 0xF, TPS65086_LDOA1CTRL,
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VDOA1_VID_MASK, TPS65086_SWVTT_EN, BIT(7),
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tps65086_ldoa1_ranges, 0, 0),
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TPS65086_REGULATOR("LDOA2", "ldoa2", LDOA2, 0x10, TPS65086_LDOA2VID,
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VDOA23_VID_MASK, TPS65086_LDOA2CTRL, BIT(0),
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tps65086_ldoa23_ranges, 0, 0),
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TPS65086_REGULATOR("LDOA3", "ldoa3", LDOA3, 0x10, TPS65086_LDOA3VID,
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VDOA23_VID_MASK, TPS65086_LDOA3CTRL, BIT(0),
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tps65086_ldoa23_ranges, 0, 0),
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TPS65086_SWITCH("VTT", "vtt", VTT, TPS65086_SWVTT_EN, BIT(4)),
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TPS65086_SWITCH("SWA1", "swa1", SWA1, TPS65086_SWVTT_EN, BIT(5)),
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TPS65086_SWITCH("SWB1", "swb1", SWB1, TPS65086_SWVTT_EN, BIT(6)),
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TPS65086_SWITCH("SWB2", "swb2", SWB2, TPS65086_LDOA1CTRL, BIT(0)),
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};
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static struct tps65086_regulator tps65086401_regulator_config[] = {
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TPS65086_REGULATOR("BUCK1", "buck1", BUCK1, 0x80, TPS65086_BUCK1CTRL,
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BUCK_VID_MASK, TPS65086_BUCK123CTRL, BIT(0),
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tps65086_10mv_ranges, TPS65086_BUCK1CTRL,
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BIT(0)),
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TPS65086_REGULATOR("BUCK2", "buck2", BUCK2, 0x80, TPS65086_BUCK2CTRL,
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BUCK_VID_MASK, TPS65086_BUCK123CTRL, BIT(1),
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tps65086_10mv_ranges, TPS65086_BUCK2CTRL,
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BIT(0)),
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TPS65086_REGULATOR("BUCK3", "buck3", BUCK3, 0x80, TPS65086_BUCK3VID,
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BUCK_VID_MASK, TPS65086_BUCK123CTRL, BIT(2),
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tps65086_10mv_ranges, TPS65086_BUCK3DECAY,
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BIT(0)),
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TPS65086_REGULATOR("BUCK4", "buck4", BUCK4, 0x80, TPS65086_BUCK4VID,
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BUCK_VID_MASK, TPS65086_BUCK4CTRL, BIT(0),
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tps65086_10mv_ranges, TPS65086_BUCK4VID,
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BIT(0)),
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TPS65086_REGULATOR("BUCK5", "buck5", BUCK5, 0x80, TPS65086_BUCK5VID,
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BUCK_VID_MASK, TPS65086_BUCK5CTRL, BIT(0),
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tps65086_10mv_ranges, TPS65086_BUCK5CTRL,
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BIT(0)),
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TPS65086_REGULATOR("BUCK6", "buck6", BUCK6, 0x80, TPS65086_BUCK6VID,
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BUCK_VID_MASK, TPS65086_BUCK6CTRL, BIT(0),
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tps65086_10mv_ranges, TPS65086_BUCK6CTRL,
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BIT(0)),
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TPS65086_REGULATOR("LDOA1", "ldoa1", LDOA1, 0xF, TPS65086_LDOA1CTRL,
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VDOA1_VID_MASK, TPS65086_SWVTT_EN, BIT(7),
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tps65086_ldoa1_ranges, 0, 0),
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TPS65086_REGULATOR("LDOA2", "ldoa2", LDOA2, 0x10, TPS65086_LDOA2VID,
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VDOA23_VID_MASK, TPS65086_LDOA2CTRL, BIT(0),
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tps65086_ldoa23_ranges, 0, 0),
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TPS65086_REGULATOR("LDOA3", "ldoa3", LDOA3, 0x10, TPS65086_LDOA3VID,
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VDOA23_VID_MASK, TPS65086_LDOA3CTRL, BIT(0),
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tps65086_ldoa23_ranges, 0, 0),
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TPS65086_SWITCH("VTT", "vtt", VTT, TPS65086_SWVTT_EN, BIT(4)),
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TPS65086_SWITCH("SWA1", "swa1", SWA1, TPS65086_SWVTT_EN, BIT(5)),
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TPS65086_SWITCH("SWB1", "swb1", SWB1, TPS65086_SWVTT_EN, BIT(6)),
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};
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static struct tps65086_regulator tps6508641_regulator_config[] = {
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TPS65086_REGULATOR("BUCK1", "buck1", BUCK1, 0x80, TPS65086_BUCK1CTRL,
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BUCK_VID_MASK, TPS65086_BUCK123CTRL, BIT(0),
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tps65086_10mv_ranges, TPS65086_BUCK1CTRL,
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BIT(0)),
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TPS65086_REGULATOR("BUCK2", "buck2", BUCK2, 0x80, TPS65086_BUCK2CTRL,
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BUCK_VID_MASK, TPS65086_BUCK123CTRL, BIT(1),
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tps65086_10mv_ranges, TPS65086_BUCK2CTRL,
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BIT(0)),
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TPS65086_REGULATOR("BUCK3", "buck3", BUCK3, 0x80, TPS65086_BUCK3VID,
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BUCK_VID_MASK, TPS65086_BUCK123CTRL, BIT(2),
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tps65086_10mv_ranges, TPS65086_BUCK3DECAY,
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BIT(0)),
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TPS65086_REGULATOR("BUCK4", "buck4", BUCK4, 0x80, TPS65086_BUCK4VID,
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BUCK_VID_MASK, TPS65086_BUCK4CTRL, BIT(0),
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tps65086_10mv_ranges, TPS65086_BUCK4VID,
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BIT(0)),
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TPS65086_REGULATOR("BUCK5", "buck5", BUCK5, 0x80, TPS65086_BUCK5VID,
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BUCK_VID_MASK, TPS65086_BUCK5CTRL, BIT(0),
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tps65086_10mv_ranges, TPS65086_BUCK5CTRL,
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BIT(0)),
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TPS65086_REGULATOR("BUCK6", "buck6", BUCK6, 0x80, TPS65086_BUCK6VID,
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BUCK_VID_MASK, TPS65086_BUCK6CTRL, BIT(0),
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tps65086_10mv_ranges, TPS65086_BUCK6CTRL,
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BIT(0)),
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TPS65086_REGULATOR("LDOA1", "ldoa1", LDOA1, 0xF, TPS65086_LDOA1CTRL,
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VDOA1_VID_MASK, TPS65086_SWVTT_EN, BIT(7),
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tps65086_ldoa1_ranges, 0, 0),
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TPS65086_REGULATOR("LDOA2", "ldoa2", LDOA2, 0x10, TPS65086_LDOA2VID,
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VDOA23_VID_MASK, TPS65086_LDOA2CTRL, BIT(0),
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tps65086_ldoa23_ranges, 0, 0),
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TPS65086_REGULATOR("LDOA3", "ldoa3", LDOA3, 0x10, TPS65086_LDOA3VID,
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VDOA23_VID_MASK, TPS65086_LDOA3CTRL, BIT(0),
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tps65086_ldoa23_ranges, 0, 0),
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TPS65086_SWITCH("VTT", "vtt", VTT, TPS65086_SWVTT_EN, BIT(4)),
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TPS65086_SWITCH("SWA1", "swa1", SWA1, TPS65086_SWVTT_EN, BIT(5)),
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TPS65086_SWITCH("SWB1", "swb1", SWB1, TPS65086_SWVTT_EN, BIT(6)),
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};
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static struct tps65086_regulator tps65086470_regulator_config[] = {
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TPS65086_REGULATOR("BUCK1", "buck1", BUCK1, 0x80, TPS65086_BUCK1CTRL,
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BUCK_VID_MASK, TPS65086_BUCK123CTRL, BIT(0),
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tps65086_10mv_ranges, TPS65086_BUCK1CTRL,
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BIT(0)),
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TPS65086_REGULATOR("BUCK2", "buck2", BUCK2, 0x80, TPS65086_BUCK2CTRL,
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BUCK_VID_MASK, TPS65086_BUCK123CTRL, BIT(1),
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tps65086_10mv_ranges, TPS65086_BUCK2CTRL,
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BIT(0)),
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TPS65086_REGULATOR("BUCK3", "buck3", BUCK3, 0x80, TPS65086_BUCK3VID,
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BUCK_VID_MASK, TPS65086_BUCK123CTRL, BIT(2),
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tps65086_10mv_ranges, TPS65086_BUCK3DECAY,
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BIT(0)),
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TPS65086_REGULATOR("BUCK4", "buck4", BUCK4, 0x80, TPS65086_BUCK4VID,
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BUCK_VID_MASK, TPS65086_BUCK4CTRL, BIT(0),
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tps65086_10mv_ranges, TPS65086_BUCK4VID,
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BIT(0)),
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TPS65086_REGULATOR("BUCK5", "buck5", BUCK5, 0x80, TPS65086_BUCK5VID,
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BUCK_VID_MASK, TPS65086_BUCK5CTRL, BIT(0),
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tps65086_10mv_ranges, TPS65086_BUCK5CTRL,
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BIT(0)),
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TPS65086_REGULATOR("BUCK6", "buck6", BUCK6, 0x80, TPS65086_BUCK6VID,
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BUCK_VID_MASK, TPS65086_BUCK6CTRL, BIT(0),
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tps65086_10mv_ranges, TPS65086_BUCK6CTRL,
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BIT(0)),
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TPS65086_REGULATOR("LDOA1", "ldoa1", LDOA1, 0xF, TPS65086_LDOA1CTRL,
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VDOA1_VID_MASK, TPS65086_LDOA1CTRL, BIT(0),
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tps65086_ldoa1_ranges, 0, 0),
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TPS65086_REGULATOR("LDOA2", "ldoa2", LDOA2, 0x10, TPS65086_LDOA2VID,
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VDOA23_VID_MASK, TPS65086_LDOA2CTRL, BIT(0),
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tps65086_ldoa23_ranges, 0, 0),
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TPS65086_REGULATOR("LDOA3", "ldoa3", LDOA3, 0x10, TPS65086_LDOA3VID,
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VDOA23_VID_MASK, TPS65086_LDOA3CTRL, BIT(0),
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tps65086_ldoa23_ranges, 0, 0),
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TPS65086_SWITCH("VTT", "vtt", VTT, TPS65086_SWVTT_EN, BIT(4)),
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TPS65086_SWITCH("SWA1", "swa1", SWA1, TPS65086_SWVTT_EN, BIT(5)),
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TPS65086_SWITCH("SWB1", "swb1", SWB1, TPS65086_SWVTT_EN, BIT(6)),
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TPS65086_SWITCH("SWB2", "swb2", SWB2, TPS65086_SWVTT_EN, BIT(7)),
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};
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static const struct tps65086_regulator_config regulator_configs[] = {
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TPS65086_REGULATOR_CONFIG(TPS6508640, tps6508640_regulator_config),
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TPS65086_REGULATOR_CONFIG(TPS65086401, tps65086401_regulator_config),
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TPS65086_REGULATOR_CONFIG(TPS6508641, tps6508641_regulator_config),
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TPS65086_REGULATOR_CONFIG(TPS65086470, tps65086470_regulator_config)
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};
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static int tps65086_of_parse_cb(struct device_node *node,
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const struct regulator_desc *desc,
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struct regulator_config *config)
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{
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struct tps65086 * const tps = dev_get_drvdata(config->dev);
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struct tps65086_regulator *regulators = tps->reg_config->config;
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int ret;
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/* Check for 25mV step mode */
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if (of_property_read_bool(node, "ti,regulator-step-size-25mv")) {
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switch (desc->id) {
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case BUCK1:
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case BUCK2:
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case BUCK6:
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regulators[desc->id].desc.linear_ranges =
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tps65086_buck126_25mv_ranges;
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regulators[desc->id].desc.n_linear_ranges =
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ARRAY_SIZE(tps65086_buck126_25mv_ranges);
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break;
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case BUCK3:
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case BUCK4:
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case BUCK5:
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regulators[desc->id].desc.linear_ranges =
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tps65086_buck345_25mv_ranges;
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regulators[desc->id].desc.n_linear_ranges =
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ARRAY_SIZE(tps65086_buck345_25mv_ranges);
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break;
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default:
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dev_warn(config->dev, "25mV step mode only valid for BUCK regulators\n");
|
|
}
|
|
}
|
|
|
|
/* Check for decay mode */
|
|
if (desc->id <= BUCK6 && of_property_read_bool(node, "ti,regulator-decay")) {
|
|
ret = regmap_write_bits(config->regmap,
|
|
regulators[desc->id].decay_reg,
|
|
regulators[desc->id].decay_mask,
|
|
regulators[desc->id].decay_mask);
|
|
if (ret) {
|
|
dev_err(config->dev, "Error setting decay\n");
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int tps65086_regulator_probe(struct platform_device *pdev)
|
|
{
|
|
struct tps65086 *tps = dev_get_drvdata(pdev->dev.parent);
|
|
struct regulator_config config = { };
|
|
unsigned int selector_reg_config;
|
|
struct regulator_dev *rdev;
|
|
int i;
|
|
|
|
/* Select regulator configuration for used PMIC device */
|
|
switch (tps->chip_id) {
|
|
case TPS6508640_ID:
|
|
selector_reg_config = TPS6508640;
|
|
break;
|
|
case TPS65086401_ID:
|
|
selector_reg_config = TPS65086401;
|
|
break;
|
|
case TPS6508641_ID:
|
|
selector_reg_config = TPS6508641;
|
|
break;
|
|
case TPS65086470_ID:
|
|
selector_reg_config = TPS65086470;
|
|
break;
|
|
default:
|
|
dev_err(tps->dev, "Unknown device ID. Cannot determine regulator config.\n");
|
|
return -ENODEV;
|
|
}
|
|
tps->reg_config = ®ulator_configs[selector_reg_config];
|
|
|
|
platform_set_drvdata(pdev, tps);
|
|
|
|
config.dev = &pdev->dev;
|
|
config.dev->of_node = tps->dev->of_node;
|
|
config.driver_data = tps;
|
|
config.regmap = tps->regmap;
|
|
|
|
for (i = 0; i < tps->reg_config->num_elems; ++i) {
|
|
struct regulator_desc * const desc_ptr = &tps->reg_config->config[i].desc;
|
|
|
|
dev_dbg(tps->dev, "Index: %u; Regulator name: \"%s\"; Regulator ID: %d\n",
|
|
i, desc_ptr->name, desc_ptr->id);
|
|
|
|
rdev = devm_regulator_register(&pdev->dev, desc_ptr, &config);
|
|
if (IS_ERR(rdev)) {
|
|
dev_err(tps->dev, "failed to register %d \"%s\" regulator\n",
|
|
i, desc_ptr->name);
|
|
return PTR_ERR(rdev);
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct platform_device_id tps65086_regulator_id_table[] = {
|
|
{ "tps65086-regulator", },
|
|
{ /* sentinel */ }
|
|
};
|
|
MODULE_DEVICE_TABLE(platform, tps65086_regulator_id_table);
|
|
|
|
static struct platform_driver tps65086_regulator_driver = {
|
|
.driver = {
|
|
.name = "tps65086-regulator",
|
|
.probe_type = PROBE_PREFER_ASYNCHRONOUS,
|
|
},
|
|
.probe = tps65086_regulator_probe,
|
|
.id_table = tps65086_regulator_id_table,
|
|
};
|
|
module_platform_driver(tps65086_regulator_driver);
|
|
|
|
MODULE_AUTHOR("Andrew F. Davis <afd@ti.com>");
|
|
MODULE_DESCRIPTION("TPS65086 Regulator driver");
|
|
MODULE_LICENSE("GPL v2");
|