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abd4627475
Based on the normalized pattern:
this program is free software you can redistribute it and/or modify it
under the terms of the gnu general public license version 2 as
published by the free software foundation this program is distributed
as is without any warranty of any kind whether expressed or implied
without even the implied warranty of merchantability or fitness for a
particular purpose see the gnu general public license version 2 for
more details
extracted by the scancode license scanner the SPDX license identifier
GPL-2.0-only
has been chosen to replace the boilerplate/reference.
Reviewed-by: Allison Randal <allison@lohutok.net>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
247 lines
7.6 KiB
C
247 lines
7.6 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, SWA1, SWB1, SWB2, VTT };
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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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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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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 regulators[] = {
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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("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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TPS65086_SWITCH("VTT", "vtt", VTT, TPS65086_SWVTT_EN, BIT(4)),
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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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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");
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}
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}
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/* Check for decay mode */
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if (desc->id <= BUCK6 && of_property_read_bool(node, "ti,regulator-decay")) {
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ret = regmap_write_bits(config->regmap,
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regulators[desc->id].decay_reg,
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regulators[desc->id].decay_mask,
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regulators[desc->id].decay_mask);
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if (ret) {
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dev_err(config->dev, "Error setting decay\n");
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return ret;
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}
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}
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return 0;
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}
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static int tps65086_regulator_probe(struct platform_device *pdev)
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{
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struct tps65086 *tps = dev_get_drvdata(pdev->dev.parent);
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struct regulator_config config = { };
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struct regulator_dev *rdev;
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int i;
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platform_set_drvdata(pdev, tps);
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config.dev = &pdev->dev;
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config.dev->of_node = tps->dev->of_node;
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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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rdev = devm_regulator_register(&pdev->dev, ®ulators[i].desc,
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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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pdev->name);
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return PTR_ERR(rdev);
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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 tps65086_regulator_id_table[] = {
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{ "tps65086-regulator", },
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{ /* sentinel */ }
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};
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MODULE_DEVICE_TABLE(platform, tps65086_regulator_id_table);
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static struct platform_driver tps65086_regulator_driver = {
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.driver = {
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.name = "tps65086-regulator",
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},
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.probe = tps65086_regulator_probe,
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.id_table = tps65086_regulator_id_table,
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};
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module_platform_driver(tps65086_regulator_driver);
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MODULE_AUTHOR("Andrew F. Davis <afd@ti.com>");
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MODULE_DESCRIPTION("TPS65086 Regulator driver");
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MODULE_LICENSE("GPL v2");
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