cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
Log | Files | Refs | README | LICENSE | sfeed.txt

rn5t618-regulator.c (5541B)


      1// SPDX-License-Identifier: GPL-2.0-only
      2/*
      3 * Regulator driver for Ricoh RN5T618 PMIC
      4 *
      5 * Copyright (C) 2014 Beniamino Galvani <b.galvani@gmail.com>
      6 */
      7
      8#include <linux/mfd/rn5t618.h>
      9#include <linux/module.h>
     10#include <linux/of.h>
     11#include <linux/platform_device.h>
     12#include <linux/regmap.h>
     13#include <linux/regulator/driver.h>
     14#include <linux/regulator/of_regulator.h>
     15
     16static const struct regulator_ops rn5t618_reg_ops = {
     17	.enable			= regulator_enable_regmap,
     18	.disable		= regulator_disable_regmap,
     19	.is_enabled		= regulator_is_enabled_regmap,
     20	.set_voltage_sel	= regulator_set_voltage_sel_regmap,
     21	.get_voltage_sel	= regulator_get_voltage_sel_regmap,
     22	.list_voltage		= regulator_list_voltage_linear,
     23};
     24
     25#define REG(rid, ereg, emask, vreg, vmask, min, max, step)		\
     26	{								\
     27		.name		= #rid,					\
     28		.of_match	= of_match_ptr(#rid),			\
     29		.regulators_node = of_match_ptr("regulators"),		\
     30		.id		= RN5T618_##rid,			\
     31		.type		= REGULATOR_VOLTAGE,			\
     32		.owner		= THIS_MODULE,				\
     33		.ops		= &rn5t618_reg_ops,			\
     34		.n_voltages	= ((max) - (min)) / (step) + 1,		\
     35		.min_uV		= (min),				\
     36		.uV_step	= (step),				\
     37		.enable_reg	= RN5T618_##ereg,			\
     38		.enable_mask	= (emask),				\
     39		.vsel_reg	= RN5T618_##vreg,			\
     40		.vsel_mask	= (vmask),				\
     41	}
     42
     43static const struct regulator_desc rn5t567_regulators[] = {
     44	/* DCDC */
     45	REG(DCDC1, DC1CTL, BIT(0), DC1DAC, 0xff, 600000, 3500000, 12500),
     46	REG(DCDC2, DC2CTL, BIT(0), DC2DAC, 0xff, 600000, 3500000, 12500),
     47	REG(DCDC3, DC3CTL, BIT(0), DC3DAC, 0xff, 600000, 3500000, 12500),
     48	REG(DCDC4, DC4CTL, BIT(0), DC4DAC, 0xff, 600000, 3500000, 12500),
     49	/* LDO */
     50	REG(LDO1, LDOEN1, BIT(0), LDO1DAC, 0x7f, 900000, 3500000, 25000),
     51	REG(LDO2, LDOEN1, BIT(1), LDO2DAC, 0x7f, 900000, 3500000, 25000),
     52	REG(LDO3, LDOEN1, BIT(2), LDO3DAC, 0x7f, 600000, 3500000, 25000),
     53	REG(LDO4, LDOEN1, BIT(3), LDO4DAC, 0x7f, 900000, 3500000, 25000),
     54	REG(LDO5, LDOEN1, BIT(4), LDO5DAC, 0x7f, 900000, 3500000, 25000),
     55	/* LDO RTC */
     56	REG(LDORTC1, LDOEN2, BIT(4), LDORTCDAC, 0x7f, 1200000, 3500000, 25000),
     57	REG(LDORTC2, LDOEN2, BIT(5), LDORTC2DAC, 0x7f, 900000, 3500000, 25000),
     58};
     59
     60static const struct regulator_desc rn5t618_regulators[] = {
     61	/* DCDC */
     62	REG(DCDC1, DC1CTL, BIT(0), DC1DAC, 0xff, 600000, 3500000, 12500),
     63	REG(DCDC2, DC2CTL, BIT(0), DC2DAC, 0xff, 600000, 3500000, 12500),
     64	REG(DCDC3, DC3CTL, BIT(0), DC3DAC, 0xff, 600000, 3500000, 12500),
     65	/* LDO */
     66	REG(LDO1, LDOEN1, BIT(0), LDO1DAC, 0x7f, 900000, 3500000, 25000),
     67	REG(LDO2, LDOEN1, BIT(1), LDO2DAC, 0x7f, 900000, 3500000, 25000),
     68	REG(LDO3, LDOEN1, BIT(2), LDO3DAC, 0x7f, 600000, 3500000, 25000),
     69	REG(LDO4, LDOEN1, BIT(3), LDO4DAC, 0x7f, 900000, 3500000, 25000),
     70	REG(LDO5, LDOEN1, BIT(4), LDO5DAC, 0x7f, 900000, 3500000, 25000),
     71	/* LDO RTC */
     72	REG(LDORTC1, LDOEN2, BIT(4), LDORTCDAC, 0x7f, 1700000, 3500000, 25000),
     73	REG(LDORTC2, LDOEN2, BIT(5), LDORTC2DAC, 0x7f, 900000, 3500000, 25000),
     74};
     75
     76static const struct regulator_desc rc5t619_regulators[] = {
     77	/* DCDC */
     78	REG(DCDC1, DC1CTL, BIT(0), DC1DAC, 0xff, 600000, 3500000, 12500),
     79	REG(DCDC2, DC2CTL, BIT(0), DC2DAC, 0xff, 600000, 3500000, 12500),
     80	REG(DCDC3, DC3CTL, BIT(0), DC3DAC, 0xff, 600000, 3500000, 12500),
     81	REG(DCDC4, DC4CTL, BIT(0), DC4DAC, 0xff, 600000, 3500000, 12500),
     82	REG(DCDC5, DC5CTL, BIT(0), DC5DAC, 0xff, 600000, 3500000, 12500),
     83	/* LDO */
     84	REG(LDO1, LDOEN1, BIT(0), LDO1DAC, 0x7f, 900000, 3500000, 25000),
     85	REG(LDO2, LDOEN1, BIT(1), LDO2DAC, 0x7f, 900000, 3500000, 25000),
     86	REG(LDO3, LDOEN1, BIT(2), LDO3DAC, 0x7f, 900000, 3500000, 25000),
     87	REG(LDO4, LDOEN1, BIT(3), LDO4DAC, 0x7f, 900000, 3500000, 25000),
     88	REG(LDO5, LDOEN1, BIT(4), LDO5DAC, 0x7f, 600000, 3500000, 25000),
     89	REG(LDO6, LDOEN1, BIT(5), LDO6DAC, 0x7f, 600000, 3500000, 25000),
     90	REG(LDO7, LDOEN1, BIT(6), LDO7DAC, 0x7f, 900000, 3500000, 25000),
     91	REG(LDO8, LDOEN1, BIT(7), LDO8DAC, 0x7f, 900000, 3500000, 25000),
     92	REG(LDO9, LDOEN2, BIT(0), LDO9DAC, 0x7f, 900000, 3500000, 25000),
     93	REG(LDO10, LDOEN2, BIT(1), LDO10DAC, 0x7f, 900000, 3500000, 25000),
     94	/* LDO RTC */
     95	REG(LDORTC1, LDOEN2, BIT(4), LDORTCDAC, 0x7f, 1700000, 3500000, 25000),
     96	REG(LDORTC2, LDOEN2, BIT(5), LDORTC2DAC, 0x7f, 900000, 3500000, 25000),
     97};
     98
     99static int rn5t618_regulator_probe(struct platform_device *pdev)
    100{
    101	struct rn5t618 *rn5t618 = dev_get_drvdata(pdev->dev.parent);
    102	struct regulator_config config = { };
    103	struct regulator_dev *rdev;
    104	const struct regulator_desc *regulators;
    105	int i;
    106	int num_regulators = 0;
    107
    108	switch (rn5t618->variant) {
    109	case RN5T567:
    110		regulators = rn5t567_regulators;
    111		num_regulators = ARRAY_SIZE(rn5t567_regulators);
    112		break;
    113	case RN5T618:
    114		regulators = rn5t618_regulators;
    115		num_regulators = ARRAY_SIZE(rn5t618_regulators);
    116		break;
    117	case RC5T619:
    118		regulators = rc5t619_regulators;
    119		num_regulators = ARRAY_SIZE(rc5t619_regulators);
    120		break;
    121	default:
    122		return -EINVAL;
    123	}
    124
    125	config.dev = pdev->dev.parent;
    126	config.regmap = rn5t618->regmap;
    127
    128	for (i = 0; i < num_regulators; i++) {
    129		rdev = devm_regulator_register(&pdev->dev,
    130					       &regulators[i],
    131					       &config);
    132		if (IS_ERR(rdev)) {
    133			dev_err(&pdev->dev, "failed to register %s regulator\n",
    134				regulators[i].name);
    135			return PTR_ERR(rdev);
    136		}
    137	}
    138
    139	return 0;
    140}
    141
    142static struct platform_driver rn5t618_regulator_driver = {
    143	.probe = rn5t618_regulator_probe,
    144	.driver = {
    145		.name	= "rn5t618-regulator",
    146	},
    147};
    148
    149module_platform_driver(rn5t618_regulator_driver);
    150
    151MODULE_ALIAS("platform:rn5t618-regulator");
    152MODULE_AUTHOR("Beniamino Galvani <b.galvani@gmail.com>");
    153MODULE_DESCRIPTION("RN5T618 regulator driver");
    154MODULE_LICENSE("GPL v2");