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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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922 lines
26 KiB
C
922 lines
26 KiB
C
/*
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* Regulator driver for DA9063 PMIC series
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*
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* Copyright 2012 Dialog Semiconductors Ltd.
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* Copyright 2013 Philipp Zabel, Pengutronix
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*
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* Author: Krystian Garbaciak <krystian.garbaciak@diasemi.com>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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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/init.h>
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#include <linux/err.h>
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#include <linux/slab.h>
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#include <linux/of.h>
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#include <linux/platform_device.h>
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#include <linux/regmap.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/regulator/of_regulator.h>
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#include <linux/mfd/da9063/core.h>
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#include <linux/mfd/da9063/pdata.h>
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#include <linux/mfd/da9063/registers.h>
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/* Definition for registering regmap bit fields using a mask */
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#define BFIELD(_reg, _mask) \
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REG_FIELD(_reg, __builtin_ffs((int)_mask) - 1, \
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sizeof(unsigned int) * 8 - __builtin_clz((_mask)) - 1)
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/* Regulator capabilities and registers description */
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struct da9063_regulator_info {
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struct regulator_desc desc;
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/* Current limiting */
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unsigned n_current_limits;
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const int *current_limits;
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/* DA9063 main register fields */
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struct reg_field mode; /* buck mode of operation */
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struct reg_field suspend;
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struct reg_field sleep;
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struct reg_field suspend_sleep;
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unsigned int suspend_vsel_reg;
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struct reg_field ilimit;
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/* DA9063 event detection bit */
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struct reg_field oc_event;
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};
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/* Macros for LDO */
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#define DA9063_LDO(chip, regl_name, min_mV, step_mV, max_mV) \
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.desc.id = chip##_ID_##regl_name, \
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.desc.name = __stringify(chip##_##regl_name), \
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.desc.ops = &da9063_ldo_ops, \
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.desc.min_uV = (min_mV) * 1000, \
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.desc.uV_step = (step_mV) * 1000, \
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.desc.n_voltages = (((max_mV) - (min_mV))/(step_mV) + 1), \
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.desc.enable_reg = DA9063_REG_##regl_name##_CONT, \
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.desc.enable_mask = DA9063_LDO_EN, \
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.desc.vsel_reg = DA9063_REG_V##regl_name##_A, \
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.desc.vsel_mask = DA9063_V##regl_name##_MASK, \
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.desc.linear_min_sel = DA9063_V##regl_name##_BIAS, \
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.sleep = BFIELD(DA9063_REG_V##regl_name##_A, DA9063_LDO_SL), \
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.suspend_sleep = BFIELD(DA9063_REG_V##regl_name##_B, DA9063_LDO_SL), \
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.suspend_vsel_reg = DA9063_REG_V##regl_name##_B
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/* Macros for voltage DC/DC converters (BUCKs) */
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#define DA9063_BUCK(chip, regl_name, min_mV, step_mV, max_mV, limits_array) \
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.desc.id = chip##_ID_##regl_name, \
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.desc.name = __stringify(chip##_##regl_name), \
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.desc.ops = &da9063_buck_ops, \
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.desc.min_uV = (min_mV) * 1000, \
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.desc.uV_step = (step_mV) * 1000, \
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.desc.n_voltages = ((max_mV) - (min_mV))/(step_mV) + 1, \
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.current_limits = limits_array, \
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.n_current_limits = ARRAY_SIZE(limits_array)
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#define DA9063_BUCK_COMMON_FIELDS(regl_name) \
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.desc.enable_reg = DA9063_REG_##regl_name##_CONT, \
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.desc.enable_mask = DA9063_BUCK_EN, \
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.desc.vsel_reg = DA9063_REG_V##regl_name##_A, \
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.desc.vsel_mask = DA9063_VBUCK_MASK, \
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.desc.linear_min_sel = DA9063_VBUCK_BIAS, \
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.sleep = BFIELD(DA9063_REG_V##regl_name##_A, DA9063_BUCK_SL), \
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.suspend_sleep = BFIELD(DA9063_REG_V##regl_name##_B, DA9063_BUCK_SL), \
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.suspend_vsel_reg = DA9063_REG_V##regl_name##_B, \
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.mode = BFIELD(DA9063_REG_##regl_name##_CFG, DA9063_BUCK_MODE_MASK)
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/* Defines asignment of regulators info table to chip model */
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struct da9063_dev_model {
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const struct da9063_regulator_info *regulator_info;
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unsigned n_regulators;
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unsigned dev_model;
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};
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/* Single regulator settings */
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struct da9063_regulator {
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struct regulator_desc desc;
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struct regulator_dev *rdev;
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struct da9063 *hw;
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const struct da9063_regulator_info *info;
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struct regmap_field *mode;
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struct regmap_field *suspend;
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struct regmap_field *sleep;
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struct regmap_field *suspend_sleep;
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struct regmap_field *ilimit;
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};
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/* Encapsulates all information for the regulators driver */
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struct da9063_regulators {
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int irq_ldo_lim;
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int irq_uvov;
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unsigned n_regulators;
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/* Array size to be defined during init. Keep at end. */
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struct da9063_regulator regulator[0];
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};
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/* BUCK modes for DA9063 */
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enum {
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BUCK_MODE_MANUAL, /* 0 */
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BUCK_MODE_SLEEP, /* 1 */
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BUCK_MODE_SYNC, /* 2 */
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BUCK_MODE_AUTO /* 3 */
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};
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/* Regulator operations */
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/* Current limits array (in uA) for BCORE1, BCORE2, BPRO.
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Entry indexes corresponds to register values. */
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static const int da9063_buck_a_limits[] = {
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500000, 600000, 700000, 800000, 900000, 1000000, 1100000, 1200000,
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1300000, 1400000, 1500000, 1600000, 1700000, 1800000, 1900000, 2000000
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};
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/* Current limits array (in uA) for BMEM, BIO, BPERI.
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Entry indexes corresponds to register values. */
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static const int da9063_buck_b_limits[] = {
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1500000, 1600000, 1700000, 1800000, 1900000, 2000000, 2100000, 2200000,
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2300000, 2400000, 2500000, 2600000, 2700000, 2800000, 2900000, 3000000
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};
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/* Current limits array (in uA) for merged BCORE1 and BCORE2.
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Entry indexes corresponds to register values. */
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static const int da9063_bcores_merged_limits[] = {
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1000000, 1200000, 1400000, 1600000, 1800000, 2000000, 2200000, 2400000,
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2600000, 2800000, 3000000, 3200000, 3400000, 3600000, 3800000, 4000000
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};
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/* Current limits array (in uA) for merged BMEM and BIO.
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Entry indexes corresponds to register values. */
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static const int da9063_bmem_bio_merged_limits[] = {
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3000000, 3200000, 3400000, 3600000, 3800000, 4000000, 4200000, 4400000,
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4600000, 4800000, 5000000, 5200000, 5400000, 5600000, 5800000, 6000000
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};
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static int da9063_set_current_limit(struct regulator_dev *rdev,
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int min_uA, int max_uA)
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{
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struct da9063_regulator *regl = rdev_get_drvdata(rdev);
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const struct da9063_regulator_info *rinfo = regl->info;
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int n, tval;
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for (n = 0; n < rinfo->n_current_limits; n++) {
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tval = rinfo->current_limits[n];
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if (tval >= min_uA && tval <= max_uA)
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return regmap_field_write(regl->ilimit, n);
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}
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return -EINVAL;
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}
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static int da9063_get_current_limit(struct regulator_dev *rdev)
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{
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struct da9063_regulator *regl = rdev_get_drvdata(rdev);
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const struct da9063_regulator_info *rinfo = regl->info;
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unsigned int sel;
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int ret;
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ret = regmap_field_read(regl->ilimit, &sel);
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if (ret < 0)
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return ret;
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if (sel >= rinfo->n_current_limits)
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sel = rinfo->n_current_limits - 1;
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return rinfo->current_limits[sel];
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}
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static int da9063_buck_set_mode(struct regulator_dev *rdev, unsigned mode)
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{
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struct da9063_regulator *regl = rdev_get_drvdata(rdev);
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unsigned val;
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switch (mode) {
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case REGULATOR_MODE_FAST:
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val = BUCK_MODE_SYNC;
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break;
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case REGULATOR_MODE_NORMAL:
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val = BUCK_MODE_AUTO;
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break;
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case REGULATOR_MODE_STANDBY:
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val = BUCK_MODE_SLEEP;
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break;
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default:
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return -EINVAL;
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}
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return regmap_field_write(regl->mode, val);
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}
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/*
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* Bucks use single mode register field for normal operation
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* and suspend state.
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* There are 3 modes to map to: FAST, NORMAL, and STANDBY.
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*/
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static unsigned da9063_buck_get_mode(struct regulator_dev *rdev)
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{
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struct da9063_regulator *regl = rdev_get_drvdata(rdev);
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struct regmap_field *field;
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unsigned int val, mode = 0;
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int ret;
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ret = regmap_field_read(regl->mode, &val);
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if (ret < 0)
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return ret;
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switch (val) {
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default:
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case BUCK_MODE_MANUAL:
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mode = REGULATOR_MODE_FAST | REGULATOR_MODE_STANDBY;
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/* Sleep flag bit decides the mode */
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break;
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case BUCK_MODE_SLEEP:
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return REGULATOR_MODE_STANDBY;
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case BUCK_MODE_SYNC:
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return REGULATOR_MODE_FAST;
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case BUCK_MODE_AUTO:
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return REGULATOR_MODE_NORMAL;
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}
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/* Detect current regulator state */
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ret = regmap_field_read(regl->suspend, &val);
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if (ret < 0)
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return 0;
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/* Read regulator mode from proper register, depending on state */
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if (val)
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field = regl->suspend_sleep;
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else
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field = regl->sleep;
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ret = regmap_field_read(field, &val);
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if (ret < 0)
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return 0;
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if (val)
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mode &= REGULATOR_MODE_STANDBY;
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else
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mode &= REGULATOR_MODE_NORMAL | REGULATOR_MODE_FAST;
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return mode;
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}
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/*
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* LDOs use sleep flags - one for normal and one for suspend state.
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* There are 2 modes to map to: NORMAL and STANDBY (sleep) for each state.
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*/
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static int da9063_ldo_set_mode(struct regulator_dev *rdev, unsigned mode)
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{
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struct da9063_regulator *regl = rdev_get_drvdata(rdev);
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unsigned val;
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switch (mode) {
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case REGULATOR_MODE_NORMAL:
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val = 0;
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break;
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case REGULATOR_MODE_STANDBY:
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val = 1;
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break;
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default:
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return -EINVAL;
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}
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return regmap_field_write(regl->sleep, val);
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}
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static unsigned da9063_ldo_get_mode(struct regulator_dev *rdev)
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{
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struct da9063_regulator *regl = rdev_get_drvdata(rdev);
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struct regmap_field *field;
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int ret, val;
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/* Detect current regulator state */
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ret = regmap_field_read(regl->suspend, &val);
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if (ret < 0)
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return 0;
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/* Read regulator mode from proper register, depending on state */
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if (val)
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field = regl->suspend_sleep;
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else
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field = regl->sleep;
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ret = regmap_field_read(field, &val);
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if (ret < 0)
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return 0;
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if (val)
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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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static int da9063_buck_get_status(struct regulator_dev *rdev)
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{
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int ret = regulator_is_enabled_regmap(rdev);
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if (ret == 0) {
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ret = REGULATOR_STATUS_OFF;
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} else if (ret > 0) {
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ret = da9063_buck_get_mode(rdev);
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if (ret > 0)
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ret = regulator_mode_to_status(ret);
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else if (ret == 0)
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ret = -EIO;
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}
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return ret;
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}
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static int da9063_ldo_get_status(struct regulator_dev *rdev)
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{
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int ret = regulator_is_enabled_regmap(rdev);
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if (ret == 0) {
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ret = REGULATOR_STATUS_OFF;
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} else if (ret > 0) {
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ret = da9063_ldo_get_mode(rdev);
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if (ret > 0)
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ret = regulator_mode_to_status(ret);
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else if (ret == 0)
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ret = -EIO;
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}
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return ret;
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}
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static int da9063_set_suspend_voltage(struct regulator_dev *rdev, int uV)
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{
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struct da9063_regulator *regl = rdev_get_drvdata(rdev);
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const struct da9063_regulator_info *rinfo = regl->info;
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int ret, sel;
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sel = regulator_map_voltage_linear(rdev, uV, uV);
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if (sel < 0)
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return -EINVAL;
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sel <<= ffs(rdev->desc->vsel_mask) - 1;
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ret = regmap_update_bits(regl->hw->regmap, rinfo->suspend_vsel_reg,
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rdev->desc->vsel_mask, sel);
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return ret;
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}
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static int da9063_suspend_enable(struct regulator_dev *rdev)
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{
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struct da9063_regulator *regl = rdev_get_drvdata(rdev);
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return regmap_field_write(regl->suspend, 1);
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}
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static int da9063_suspend_disable(struct regulator_dev *rdev)
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{
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struct da9063_regulator *regl = rdev_get_drvdata(rdev);
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return regmap_field_write(regl->suspend, 0);
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}
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static int da9063_buck_set_suspend_mode(struct regulator_dev *rdev, unsigned mode)
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{
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struct da9063_regulator *regl = rdev_get_drvdata(rdev);
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int val;
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switch (mode) {
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case REGULATOR_MODE_FAST:
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val = BUCK_MODE_SYNC;
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break;
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case REGULATOR_MODE_NORMAL:
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val = BUCK_MODE_AUTO;
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break;
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case REGULATOR_MODE_STANDBY:
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val = BUCK_MODE_SLEEP;
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break;
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default:
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return -EINVAL;
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}
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return regmap_field_write(regl->mode, val);
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}
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static int da9063_ldo_set_suspend_mode(struct regulator_dev *rdev, unsigned mode)
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{
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struct da9063_regulator *regl = rdev_get_drvdata(rdev);
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unsigned val;
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switch (mode) {
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case REGULATOR_MODE_NORMAL:
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val = 0;
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break;
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case REGULATOR_MODE_STANDBY:
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val = 1;
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break;
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default:
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return -EINVAL;
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}
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return regmap_field_write(regl->suspend_sleep, val);
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}
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static struct regulator_ops da9063_buck_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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.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,
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.set_current_limit = da9063_set_current_limit,
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.get_current_limit = da9063_get_current_limit,
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.set_mode = da9063_buck_set_mode,
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.get_mode = da9063_buck_get_mode,
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.get_status = da9063_buck_get_status,
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.set_suspend_voltage = da9063_set_suspend_voltage,
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.set_suspend_enable = da9063_suspend_enable,
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.set_suspend_disable = da9063_suspend_disable,
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.set_suspend_mode = da9063_buck_set_suspend_mode,
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};
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static struct regulator_ops da9063_ldo_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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.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,
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.set_mode = da9063_ldo_set_mode,
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.get_mode = da9063_ldo_get_mode,
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.get_status = da9063_ldo_get_status,
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.set_suspend_voltage = da9063_set_suspend_voltage,
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.set_suspend_enable = da9063_suspend_enable,
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.set_suspend_disable = da9063_suspend_disable,
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.set_suspend_mode = da9063_ldo_set_suspend_mode,
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};
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/* Info of regulators for DA9063 */
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static const struct da9063_regulator_info da9063_regulator_info[] = {
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{
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DA9063_BUCK(DA9063, BCORE1, 300, 10, 1570,
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da9063_buck_a_limits),
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DA9063_BUCK_COMMON_FIELDS(BCORE1),
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.suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VBCORE1_SEL),
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.ilimit = BFIELD(DA9063_REG_BUCK_ILIM_C,
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DA9063_BCORE1_ILIM_MASK),
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},
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{
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DA9063_BUCK(DA9063, BCORE2, 300, 10, 1570,
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da9063_buck_a_limits),
|
|
DA9063_BUCK_COMMON_FIELDS(BCORE2),
|
|
.suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VBCORE2_SEL),
|
|
.ilimit = BFIELD(DA9063_REG_BUCK_ILIM_C,
|
|
DA9063_BCORE2_ILIM_MASK),
|
|
},
|
|
{
|
|
DA9063_BUCK(DA9063, BPRO, 530, 10, 1800,
|
|
da9063_buck_a_limits),
|
|
DA9063_BUCK_COMMON_FIELDS(BPRO),
|
|
.suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VBPRO_SEL),
|
|
.ilimit = BFIELD(DA9063_REG_BUCK_ILIM_B,
|
|
DA9063_BPRO_ILIM_MASK),
|
|
},
|
|
{
|
|
DA9063_BUCK(DA9063, BMEM, 800, 20, 3340,
|
|
da9063_buck_b_limits),
|
|
DA9063_BUCK_COMMON_FIELDS(BMEM),
|
|
.suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VBMEM_SEL),
|
|
.ilimit = BFIELD(DA9063_REG_BUCK_ILIM_A,
|
|
DA9063_BMEM_ILIM_MASK),
|
|
},
|
|
{
|
|
DA9063_BUCK(DA9063, BIO, 800, 20, 3340,
|
|
da9063_buck_b_limits),
|
|
DA9063_BUCK_COMMON_FIELDS(BIO),
|
|
.suspend = BFIELD(DA9063_REG_DVC_2, DA9063_VBIO_SEL),
|
|
.ilimit = BFIELD(DA9063_REG_BUCK_ILIM_A,
|
|
DA9063_BIO_ILIM_MASK),
|
|
},
|
|
{
|
|
DA9063_BUCK(DA9063, BPERI, 800, 20, 3340,
|
|
da9063_buck_b_limits),
|
|
DA9063_BUCK_COMMON_FIELDS(BPERI),
|
|
.suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VBPERI_SEL),
|
|
.ilimit = BFIELD(DA9063_REG_BUCK_ILIM_B,
|
|
DA9063_BPERI_ILIM_MASK),
|
|
},
|
|
{
|
|
DA9063_BUCK(DA9063, BCORES_MERGED, 300, 10, 1570,
|
|
da9063_bcores_merged_limits),
|
|
/* BCORES_MERGED uses the same register fields as BCORE1 */
|
|
DA9063_BUCK_COMMON_FIELDS(BCORE1),
|
|
.suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VBCORE1_SEL),
|
|
.ilimit = BFIELD(DA9063_REG_BUCK_ILIM_C,
|
|
DA9063_BCORE1_ILIM_MASK),
|
|
},
|
|
{
|
|
DA9063_BUCK(DA9063, BMEM_BIO_MERGED, 800, 20, 3340,
|
|
da9063_bmem_bio_merged_limits),
|
|
/* BMEM_BIO_MERGED uses the same register fields as BMEM */
|
|
DA9063_BUCK_COMMON_FIELDS(BMEM),
|
|
.suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VBMEM_SEL),
|
|
.ilimit = BFIELD(DA9063_REG_BUCK_ILIM_A,
|
|
DA9063_BMEM_ILIM_MASK),
|
|
},
|
|
{
|
|
DA9063_LDO(DA9063, LDO1, 600, 20, 1860),
|
|
.suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VLDO1_SEL),
|
|
},
|
|
{
|
|
DA9063_LDO(DA9063, LDO2, 600, 20, 1860),
|
|
.suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VLDO2_SEL),
|
|
},
|
|
{
|
|
DA9063_LDO(DA9063, LDO3, 900, 20, 3440),
|
|
.suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VLDO3_SEL),
|
|
.oc_event = BFIELD(DA9063_REG_STATUS_D, DA9063_LDO3_LIM),
|
|
},
|
|
{
|
|
DA9063_LDO(DA9063, LDO4, 900, 20, 3440),
|
|
.suspend = BFIELD(DA9063_REG_DVC_2, DA9063_VLDO4_SEL),
|
|
.oc_event = BFIELD(DA9063_REG_STATUS_D, DA9063_LDO4_LIM),
|
|
},
|
|
{
|
|
DA9063_LDO(DA9063, LDO5, 900, 50, 3600),
|
|
.suspend = BFIELD(DA9063_REG_LDO5_CONT, DA9063_VLDO5_SEL),
|
|
},
|
|
{
|
|
DA9063_LDO(DA9063, LDO6, 900, 50, 3600),
|
|
.suspend = BFIELD(DA9063_REG_LDO6_CONT, DA9063_VLDO6_SEL),
|
|
},
|
|
{
|
|
DA9063_LDO(DA9063, LDO7, 900, 50, 3600),
|
|
.suspend = BFIELD(DA9063_REG_LDO7_CONT, DA9063_VLDO7_SEL),
|
|
.oc_event = BFIELD(DA9063_REG_STATUS_D, DA9063_LDO7_LIM),
|
|
},
|
|
{
|
|
DA9063_LDO(DA9063, LDO8, 900, 50, 3600),
|
|
.suspend = BFIELD(DA9063_REG_LDO8_CONT, DA9063_VLDO8_SEL),
|
|
.oc_event = BFIELD(DA9063_REG_STATUS_D, DA9063_LDO8_LIM),
|
|
},
|
|
{
|
|
DA9063_LDO(DA9063, LDO9, 950, 50, 3600),
|
|
.suspend = BFIELD(DA9063_REG_LDO9_CONT, DA9063_VLDO9_SEL),
|
|
},
|
|
{
|
|
DA9063_LDO(DA9063, LDO10, 900, 50, 3600),
|
|
.suspend = BFIELD(DA9063_REG_LDO10_CONT, DA9063_VLDO10_SEL),
|
|
},
|
|
{
|
|
DA9063_LDO(DA9063, LDO11, 900, 50, 3600),
|
|
.suspend = BFIELD(DA9063_REG_LDO11_CONT, DA9063_VLDO11_SEL),
|
|
.oc_event = BFIELD(DA9063_REG_STATUS_D, DA9063_LDO11_LIM),
|
|
},
|
|
};
|
|
|
|
/* Link chip model with regulators info table */
|
|
static struct da9063_dev_model regulators_models[] = {
|
|
{
|
|
.regulator_info = da9063_regulator_info,
|
|
.n_regulators = ARRAY_SIZE(da9063_regulator_info),
|
|
.dev_model = PMIC_DA9063,
|
|
},
|
|
{ }
|
|
};
|
|
|
|
/* Regulator interrupt handlers */
|
|
static irqreturn_t da9063_ldo_lim_event(int irq, void *data)
|
|
{
|
|
struct da9063_regulators *regulators = data;
|
|
struct da9063 *hw = regulators->regulator[0].hw;
|
|
struct da9063_regulator *regl;
|
|
int bits, i , ret;
|
|
|
|
ret = regmap_read(hw->regmap, DA9063_REG_STATUS_D, &bits);
|
|
if (ret < 0)
|
|
return IRQ_NONE;
|
|
|
|
for (i = regulators->n_regulators - 1; i >= 0; i--) {
|
|
regl = ®ulators->regulator[i];
|
|
if (regl->info->oc_event.reg != DA9063_REG_STATUS_D)
|
|
continue;
|
|
|
|
if (BIT(regl->info->oc_event.lsb) & bits)
|
|
regulator_notifier_call_chain(regl->rdev,
|
|
REGULATOR_EVENT_OVER_CURRENT, NULL);
|
|
}
|
|
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
/*
|
|
* Probing and Initialisation functions
|
|
*/
|
|
static const struct regulator_init_data *da9063_get_regulator_initdata(
|
|
const struct da9063_regulators_pdata *regl_pdata, int id)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < regl_pdata->n_regulators; i++) {
|
|
if (id == regl_pdata->regulator_data[i].id)
|
|
return regl_pdata->regulator_data[i].initdata;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
#ifdef CONFIG_OF
|
|
static struct of_regulator_match da9063_matches[] = {
|
|
[DA9063_ID_BCORE1] = { .name = "bcore1" },
|
|
[DA9063_ID_BCORE2] = { .name = "bcore2" },
|
|
[DA9063_ID_BPRO] = { .name = "bpro", },
|
|
[DA9063_ID_BMEM] = { .name = "bmem", },
|
|
[DA9063_ID_BIO] = { .name = "bio", },
|
|
[DA9063_ID_BPERI] = { .name = "bperi", },
|
|
[DA9063_ID_BCORES_MERGED] = { .name = "bcores-merged" },
|
|
[DA9063_ID_BMEM_BIO_MERGED] = { .name = "bmem-bio-merged", },
|
|
[DA9063_ID_LDO1] = { .name = "ldo1", },
|
|
[DA9063_ID_LDO2] = { .name = "ldo2", },
|
|
[DA9063_ID_LDO3] = { .name = "ldo3", },
|
|
[DA9063_ID_LDO4] = { .name = "ldo4", },
|
|
[DA9063_ID_LDO5] = { .name = "ldo5", },
|
|
[DA9063_ID_LDO6] = { .name = "ldo6", },
|
|
[DA9063_ID_LDO7] = { .name = "ldo7", },
|
|
[DA9063_ID_LDO8] = { .name = "ldo8", },
|
|
[DA9063_ID_LDO9] = { .name = "ldo9", },
|
|
[DA9063_ID_LDO10] = { .name = "ldo10", },
|
|
[DA9063_ID_LDO11] = { .name = "ldo11", },
|
|
};
|
|
|
|
static struct da9063_regulators_pdata *da9063_parse_regulators_dt(
|
|
struct platform_device *pdev,
|
|
struct of_regulator_match **da9063_reg_matches)
|
|
{
|
|
struct da9063_regulators_pdata *pdata;
|
|
struct da9063_regulator_data *rdata;
|
|
struct device_node *node;
|
|
int i, n, num;
|
|
|
|
node = of_find_node_by_name(pdev->dev.parent->of_node, "regulators");
|
|
if (!node) {
|
|
dev_err(&pdev->dev, "Regulators device node not found\n");
|
|
return ERR_PTR(-ENODEV);
|
|
}
|
|
|
|
num = of_regulator_match(&pdev->dev, node, da9063_matches,
|
|
ARRAY_SIZE(da9063_matches));
|
|
if (num < 0) {
|
|
dev_err(&pdev->dev, "Failed to match regulators\n");
|
|
return ERR_PTR(-EINVAL);
|
|
}
|
|
|
|
pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
|
|
if (!pdata)
|
|
return ERR_PTR(-ENOMEM);
|
|
|
|
pdata->regulator_data = devm_kzalloc(&pdev->dev,
|
|
num * sizeof(*pdata->regulator_data),
|
|
GFP_KERNEL);
|
|
if (!pdata->regulator_data)
|
|
return ERR_PTR(-ENOMEM);
|
|
pdata->n_regulators = num;
|
|
|
|
n = 0;
|
|
for (i = 0; i < ARRAY_SIZE(da9063_matches); i++) {
|
|
if (!da9063_matches[i].init_data)
|
|
continue;
|
|
|
|
rdata = &pdata->regulator_data[n];
|
|
rdata->id = i;
|
|
rdata->initdata = da9063_matches[i].init_data;
|
|
|
|
n++;
|
|
};
|
|
|
|
*da9063_reg_matches = da9063_matches;
|
|
return pdata;
|
|
}
|
|
#else
|
|
static struct da9063_regulators_pdata *da9063_parse_regulators_dt(
|
|
struct platform_device *pdev,
|
|
struct of_regulator_match **da9063_reg_matches)
|
|
{
|
|
da9063_reg_matches = NULL;
|
|
return ERR_PTR(-ENODEV);
|
|
}
|
|
#endif
|
|
|
|
static int da9063_regulator_probe(struct platform_device *pdev)
|
|
{
|
|
struct da9063 *da9063 = dev_get_drvdata(pdev->dev.parent);
|
|
struct da9063_pdata *da9063_pdata = dev_get_platdata(da9063->dev);
|
|
struct of_regulator_match *da9063_reg_matches = NULL;
|
|
struct da9063_regulators_pdata *regl_pdata;
|
|
const struct da9063_dev_model *model;
|
|
struct da9063_regulators *regulators;
|
|
struct da9063_regulator *regl;
|
|
struct regulator_config config;
|
|
bool bcores_merged, bmem_bio_merged;
|
|
int id, irq, n, n_regulators, ret, val;
|
|
size_t size;
|
|
|
|
regl_pdata = da9063_pdata ? da9063_pdata->regulators_pdata : NULL;
|
|
|
|
if (!regl_pdata)
|
|
regl_pdata = da9063_parse_regulators_dt(pdev,
|
|
&da9063_reg_matches);
|
|
|
|
if (IS_ERR(regl_pdata) || regl_pdata->n_regulators == 0) {
|
|
dev_err(&pdev->dev,
|
|
"No regulators defined for the platform\n");
|
|
return PTR_ERR(regl_pdata);
|
|
}
|
|
|
|
/* Find regulators set for particular device model */
|
|
for (model = regulators_models; model->regulator_info; model++) {
|
|
if (model->dev_model == da9063->model)
|
|
break;
|
|
}
|
|
if (!model->regulator_info) {
|
|
dev_err(&pdev->dev, "Chip model not recognised (%u)\n",
|
|
da9063->model);
|
|
return -ENODEV;
|
|
}
|
|
|
|
ret = regmap_read(da9063->regmap, DA9063_REG_CONFIG_H, &val);
|
|
if (ret < 0) {
|
|
dev_err(&pdev->dev,
|
|
"Error while reading BUCKs configuration\n");
|
|
return -EIO;
|
|
}
|
|
bcores_merged = val & DA9063_BCORE_MERGE;
|
|
bmem_bio_merged = val & DA9063_BUCK_MERGE;
|
|
|
|
n_regulators = model->n_regulators;
|
|
if (bcores_merged)
|
|
n_regulators -= 2; /* remove BCORE1, BCORE2 */
|
|
else
|
|
n_regulators--; /* remove BCORES_MERGED */
|
|
if (bmem_bio_merged)
|
|
n_regulators -= 2; /* remove BMEM, BIO */
|
|
else
|
|
n_regulators--; /* remove BMEM_BIO_MERGED */
|
|
|
|
/* Allocate memory required by usable regulators */
|
|
size = sizeof(struct da9063_regulators) +
|
|
n_regulators * sizeof(struct da9063_regulator);
|
|
regulators = devm_kzalloc(&pdev->dev, size, GFP_KERNEL);
|
|
if (!regulators) {
|
|
dev_err(&pdev->dev, "No memory for regulators\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
regulators->n_regulators = n_regulators;
|
|
platform_set_drvdata(pdev, regulators);
|
|
|
|
/* Register all regulators declared in platform information */
|
|
n = 0;
|
|
id = 0;
|
|
while (n < regulators->n_regulators) {
|
|
/* Skip regulator IDs depending on merge mode configuration */
|
|
switch (id) {
|
|
case DA9063_ID_BCORE1:
|
|
case DA9063_ID_BCORE2:
|
|
if (bcores_merged) {
|
|
id++;
|
|
continue;
|
|
}
|
|
break;
|
|
case DA9063_ID_BMEM:
|
|
case DA9063_ID_BIO:
|
|
if (bmem_bio_merged) {
|
|
id++;
|
|
continue;
|
|
}
|
|
break;
|
|
case DA9063_ID_BCORES_MERGED:
|
|
if (!bcores_merged) {
|
|
id++;
|
|
continue;
|
|
}
|
|
break;
|
|
case DA9063_ID_BMEM_BIO_MERGED:
|
|
if (!bmem_bio_merged) {
|
|
id++;
|
|
continue;
|
|
}
|
|
break;
|
|
}
|
|
|
|
/* Initialise regulator structure */
|
|
regl = ®ulators->regulator[n];
|
|
regl->hw = da9063;
|
|
regl->info = &model->regulator_info[id];
|
|
regl->desc = regl->info->desc;
|
|
regl->desc.type = REGULATOR_VOLTAGE;
|
|
regl->desc.owner = THIS_MODULE;
|
|
|
|
if (regl->info->mode.reg)
|
|
regl->mode = devm_regmap_field_alloc(&pdev->dev,
|
|
da9063->regmap, regl->info->mode);
|
|
if (regl->info->suspend.reg)
|
|
regl->suspend = devm_regmap_field_alloc(&pdev->dev,
|
|
da9063->regmap, regl->info->suspend);
|
|
if (regl->info->sleep.reg)
|
|
regl->sleep = devm_regmap_field_alloc(&pdev->dev,
|
|
da9063->regmap, regl->info->sleep);
|
|
if (regl->info->suspend_sleep.reg)
|
|
regl->suspend_sleep = devm_regmap_field_alloc(&pdev->dev,
|
|
da9063->regmap, regl->info->suspend_sleep);
|
|
if (regl->info->ilimit.reg)
|
|
regl->ilimit = devm_regmap_field_alloc(&pdev->dev,
|
|
da9063->regmap, regl->info->ilimit);
|
|
|
|
/* Register regulator */
|
|
memset(&config, 0, sizeof(config));
|
|
config.dev = &pdev->dev;
|
|
config.init_data = da9063_get_regulator_initdata(regl_pdata, id);
|
|
config.driver_data = regl;
|
|
if (da9063_reg_matches)
|
|
config.of_node = da9063_reg_matches[id].of_node;
|
|
config.regmap = da9063->regmap;
|
|
regl->rdev = devm_regulator_register(&pdev->dev, ®l->desc,
|
|
&config);
|
|
if (IS_ERR(regl->rdev)) {
|
|
dev_err(&pdev->dev,
|
|
"Failed to register %s regulator\n",
|
|
regl->desc.name);
|
|
return PTR_ERR(regl->rdev);
|
|
}
|
|
id++;
|
|
n++;
|
|
}
|
|
|
|
/* LDOs overcurrent event support */
|
|
irq = platform_get_irq_byname(pdev, "LDO_LIM");
|
|
if (irq < 0) {
|
|
dev_err(&pdev->dev, "Failed to get IRQ.\n");
|
|
return irq;
|
|
}
|
|
|
|
regulators->irq_ldo_lim = regmap_irq_get_virq(da9063->regmap_irq, irq);
|
|
if (regulators->irq_ldo_lim >= 0) {
|
|
ret = request_threaded_irq(regulators->irq_ldo_lim,
|
|
NULL, da9063_ldo_lim_event,
|
|
IRQF_TRIGGER_LOW | IRQF_ONESHOT,
|
|
"LDO_LIM", regulators);
|
|
if (ret) {
|
|
dev_err(&pdev->dev,
|
|
"Failed to request LDO_LIM IRQ.\n");
|
|
regulators->irq_ldo_lim = -ENXIO;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int da9063_regulator_remove(struct platform_device *pdev)
|
|
{
|
|
struct da9063_regulators *regulators = platform_get_drvdata(pdev);
|
|
|
|
free_irq(regulators->irq_ldo_lim, regulators);
|
|
free_irq(regulators->irq_uvov, regulators);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct platform_driver da9063_regulator_driver = {
|
|
.driver = {
|
|
.name = DA9063_DRVNAME_REGULATORS,
|
|
.owner = THIS_MODULE,
|
|
},
|
|
.probe = da9063_regulator_probe,
|
|
.remove = da9063_regulator_remove,
|
|
};
|
|
|
|
static int __init da9063_regulator_init(void)
|
|
{
|
|
return platform_driver_register(&da9063_regulator_driver);
|
|
}
|
|
subsys_initcall(da9063_regulator_init);
|
|
|
|
static void __exit da9063_regulator_cleanup(void)
|
|
{
|
|
platform_driver_unregister(&da9063_regulator_driver);
|
|
}
|
|
module_exit(da9063_regulator_cleanup);
|
|
|
|
|
|
/* Module information */
|
|
MODULE_AUTHOR("Krystian Garbaciak <krystian.garbaciak@diasemi.com>");
|
|
MODULE_DESCRIPTION("DA9063 regulators driver");
|
|
MODULE_LICENSE("GPL");
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MODULE_ALIAS("paltform:" DA9063_DRVNAME_REGULATORS);
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