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555767fd91
Consistently use the defines for buck control mask values. Signed-off-by: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com> Link: https://lore.kernel.org/r/YVqpujZLZmaiqwe8@fedora Signed-off-by: Mark Brown <broonie@kernel.org>
635 lines
19 KiB
C
635 lines
19 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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//
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// Copyright 2014 Embest Technology Co. Ltd. Inc.
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// bd71815-regulator.c ROHM BD71815 regulator driver
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//
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// Author: Tony Luo <luofc@embedinfo.com>
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//
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// Partially rewritten at 2021 by
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// Matti Vaittinen <matti.vaitinen@fi.rohmeurope.com>
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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/platform_device.h>
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#include <linux/of.h>
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#include <linux/gpio/consumer.h>
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#include <linux/regulator/driver.h>
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#include <linux/delay.h>
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#include <linux/slab.h>
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#include <linux/gpio.h>
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#include <linux/mfd/rohm-generic.h>
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#include <linux/mfd/rohm-bd71815.h>
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#include <linux/regulator/of_regulator.h>
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struct bd71815_regulator {
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struct regulator_desc desc;
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const struct rohm_dvs_config *dvs;
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};
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static const int bd7181x_wled_currents[] = {
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10, 20, 30, 50, 70, 100, 200, 300, 500, 700, 1000, 2000, 3000, 4000,
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5000, 6000, 7000, 8000, 9000, 10000, 11000, 12000, 13000, 14000, 15000,
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16000, 17000, 18000, 19000, 20000, 21000, 22000, 23000, 24000, 25000,
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};
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static const struct rohm_dvs_config buck1_dvs = {
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.level_map = ROHM_DVS_LEVEL_RUN | ROHM_DVS_LEVEL_SNVS |
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ROHM_DVS_LEVEL_SUSPEND | ROHM_DVS_LEVEL_LPSR,
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.run_reg = BD71815_REG_BUCK1_VOLT_H,
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.run_mask = BD71815_VOLT_MASK,
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.run_on_mask = BD71815_BUCK_RUN_ON,
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.snvs_on_mask = BD71815_BUCK_SNVS_ON,
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.suspend_reg = BD71815_REG_BUCK1_VOLT_L,
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.suspend_mask = BD71815_VOLT_MASK,
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.suspend_on_mask = BD71815_BUCK_SUSP_ON,
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.lpsr_reg = BD71815_REG_BUCK1_VOLT_L,
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.lpsr_mask = BD71815_VOLT_MASK,
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.lpsr_on_mask = BD71815_BUCK_LPSR_ON,
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};
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static const struct rohm_dvs_config buck2_dvs = {
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.level_map = ROHM_DVS_LEVEL_RUN | ROHM_DVS_LEVEL_SNVS |
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ROHM_DVS_LEVEL_SUSPEND | ROHM_DVS_LEVEL_LPSR,
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.run_reg = BD71815_REG_BUCK2_VOLT_H,
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.run_mask = BD71815_VOLT_MASK,
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.run_on_mask = BD71815_BUCK_RUN_ON,
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.snvs_on_mask = BD71815_BUCK_SNVS_ON,
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.suspend_reg = BD71815_REG_BUCK2_VOLT_L,
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.suspend_mask = BD71815_VOLT_MASK,
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.suspend_on_mask = BD71815_BUCK_SUSP_ON,
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.lpsr_reg = BD71815_REG_BUCK2_VOLT_L,
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.lpsr_mask = BD71815_VOLT_MASK,
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.lpsr_on_mask = BD71815_BUCK_LPSR_ON,
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};
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static const struct rohm_dvs_config buck3_dvs = {
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.level_map = ROHM_DVS_LEVEL_RUN | ROHM_DVS_LEVEL_SNVS |
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ROHM_DVS_LEVEL_SUSPEND | ROHM_DVS_LEVEL_LPSR,
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.run_reg = BD71815_REG_BUCK3_VOLT,
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.run_mask = BD71815_VOLT_MASK,
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.run_on_mask = BD71815_BUCK_RUN_ON,
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.snvs_on_mask = BD71815_BUCK_SNVS_ON,
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.suspend_on_mask = BD71815_BUCK_SUSP_ON,
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.lpsr_on_mask = BD71815_BUCK_LPSR_ON,
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};
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static const struct rohm_dvs_config buck4_dvs = {
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.level_map = ROHM_DVS_LEVEL_RUN | ROHM_DVS_LEVEL_SNVS |
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ROHM_DVS_LEVEL_SUSPEND | ROHM_DVS_LEVEL_LPSR,
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.run_reg = BD71815_REG_BUCK4_VOLT,
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.run_mask = BD71815_VOLT_MASK,
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.run_on_mask = BD71815_BUCK_RUN_ON,
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.snvs_on_mask = BD71815_BUCK_SNVS_ON,
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.suspend_on_mask = BD71815_BUCK_SUSP_ON,
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.lpsr_on_mask = BD71815_BUCK_LPSR_ON,
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};
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static const struct rohm_dvs_config ldo1_dvs = {
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.level_map = ROHM_DVS_LEVEL_RUN | ROHM_DVS_LEVEL_SNVS |
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ROHM_DVS_LEVEL_SUSPEND | ROHM_DVS_LEVEL_LPSR,
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.run_reg = BD71815_REG_LDO_MODE1,
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.run_mask = BD71815_VOLT_MASK,
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.run_on_mask = LDO1_RUN_ON,
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.snvs_on_mask = LDO1_SNVS_ON,
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.suspend_on_mask = LDO1_SUSP_ON,
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.lpsr_on_mask = LDO1_LPSR_ON,
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};
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static const struct rohm_dvs_config ldo2_dvs = {
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.level_map = ROHM_DVS_LEVEL_RUN | ROHM_DVS_LEVEL_SNVS |
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ROHM_DVS_LEVEL_SUSPEND | ROHM_DVS_LEVEL_LPSR,
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.run_reg = BD71815_REG_LDO_MODE2,
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.run_mask = BD71815_VOLT_MASK,
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.run_on_mask = LDO2_RUN_ON,
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.snvs_on_mask = LDO2_SNVS_ON,
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.suspend_on_mask = LDO2_SUSP_ON,
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.lpsr_on_mask = LDO2_LPSR_ON,
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};
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static const struct rohm_dvs_config ldo3_dvs = {
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.level_map = ROHM_DVS_LEVEL_RUN | ROHM_DVS_LEVEL_SNVS |
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ROHM_DVS_LEVEL_SUSPEND | ROHM_DVS_LEVEL_LPSR,
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.run_reg = BD71815_REG_LDO_MODE2,
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.run_mask = BD71815_VOLT_MASK,
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.run_on_mask = LDO3_RUN_ON,
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.snvs_on_mask = LDO3_SNVS_ON,
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.suspend_on_mask = LDO3_SUSP_ON,
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.lpsr_on_mask = LDO3_LPSR_ON,
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};
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static const struct rohm_dvs_config ldo4_dvs = {
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.level_map = ROHM_DVS_LEVEL_RUN | ROHM_DVS_LEVEL_SNVS |
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ROHM_DVS_LEVEL_SUSPEND | ROHM_DVS_LEVEL_LPSR,
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.run_reg = BD71815_REG_LDO_MODE3,
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.run_mask = BD71815_VOLT_MASK,
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.run_on_mask = LDO4_RUN_ON,
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.snvs_on_mask = LDO4_SNVS_ON,
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.suspend_on_mask = LDO4_SUSP_ON,
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.lpsr_on_mask = LDO4_LPSR_ON,
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};
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static const struct rohm_dvs_config ldo5_dvs = {
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.level_map = ROHM_DVS_LEVEL_RUN | ROHM_DVS_LEVEL_SNVS |
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ROHM_DVS_LEVEL_SUSPEND | ROHM_DVS_LEVEL_LPSR,
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.run_reg = BD71815_REG_LDO_MODE3,
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.run_mask = BD71815_VOLT_MASK,
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.run_on_mask = LDO5_RUN_ON,
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.snvs_on_mask = LDO5_SNVS_ON,
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.suspend_on_mask = LDO5_SUSP_ON,
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.lpsr_on_mask = LDO5_LPSR_ON,
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};
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static const struct rohm_dvs_config dvref_dvs = {
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.level_map = ROHM_DVS_LEVEL_RUN | ROHM_DVS_LEVEL_SNVS |
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ROHM_DVS_LEVEL_SUSPEND | ROHM_DVS_LEVEL_LPSR,
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.run_on_mask = DVREF_RUN_ON,
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.snvs_on_mask = DVREF_SNVS_ON,
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.suspend_on_mask = DVREF_SUSP_ON,
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.lpsr_on_mask = DVREF_LPSR_ON,
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};
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static const struct rohm_dvs_config ldolpsr_dvs = {
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.level_map = ROHM_DVS_LEVEL_RUN | ROHM_DVS_LEVEL_SNVS |
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ROHM_DVS_LEVEL_SUSPEND | ROHM_DVS_LEVEL_LPSR,
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.run_on_mask = DVREF_RUN_ON,
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.snvs_on_mask = DVREF_SNVS_ON,
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.suspend_on_mask = DVREF_SUSP_ON,
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.lpsr_on_mask = DVREF_LPSR_ON,
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};
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static const struct rohm_dvs_config buck5_dvs = {
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.level_map = ROHM_DVS_LEVEL_RUN | ROHM_DVS_LEVEL_SNVS |
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ROHM_DVS_LEVEL_SUSPEND | ROHM_DVS_LEVEL_LPSR,
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.run_reg = BD71815_REG_BUCK5_VOLT,
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.run_mask = BD71815_VOLT_MASK,
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.run_on_mask = BD71815_BUCK_RUN_ON,
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.snvs_on_mask = BD71815_BUCK_SNVS_ON,
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.suspend_on_mask = BD71815_BUCK_SUSP_ON,
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.lpsr_on_mask = BD71815_BUCK_LPSR_ON,
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};
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static int set_hw_dvs_levels(struct device_node *np,
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const struct regulator_desc *desc,
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struct regulator_config *cfg)
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{
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struct bd71815_regulator *data;
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data = container_of(desc, struct bd71815_regulator, desc);
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return rohm_regulator_set_dvs_levels(data->dvs, np, desc, cfg->regmap);
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}
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/*
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* Bucks 1 and 2 have two voltage selection registers where selected
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* voltage can be set. Which of the registers is used can be either controlled
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* by a control bit in register - or by HW state. If HW state specific voltages
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* are given - then we assume HW state based control should be used.
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*
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* If volatge value is updated to currently selected register - then output
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* voltage is immediately changed no matter what is set as ramp rate. Thus we
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* default changing voltage by writing new value to inactive register and
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* then updating the 'register selection' bit. This naturally only works when
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* HW state machine is not used to select the voltage.
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*/
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static int buck12_set_hw_dvs_levels(struct device_node *np,
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const struct regulator_desc *desc,
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struct regulator_config *cfg)
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{
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struct bd71815_regulator *data;
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int ret = 0, val;
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data = container_of(desc, struct bd71815_regulator, desc);
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if (of_find_property(np, "rohm,dvs-run-voltage", NULL) ||
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of_find_property(np, "rohm,dvs-suspend-voltage", NULL) ||
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of_find_property(np, "rohm,dvs-lpsr-voltage", NULL) ||
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of_find_property(np, "rohm,dvs-snvs-voltage", NULL)) {
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ret = regmap_read(cfg->regmap, desc->vsel_reg, &val);
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if (ret)
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return ret;
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if (!(BD71815_BUCK_STBY_DVS & val) &&
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!(BD71815_BUCK_DVSSEL & val)) {
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int val2;
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/*
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* We are currently using voltage from _L.
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* We'd better copy it to _H and switch to it to
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* avoid shutting us down if LPSR or SUSPEND is set to
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* disabled. _L value is at reg _H + 1
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*/
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ret = regmap_read(cfg->regmap, desc->vsel_reg + 1,
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&val2);
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if (ret)
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return ret;
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ret = regmap_update_bits(cfg->regmap, desc->vsel_reg,
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BD71815_VOLT_MASK |
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BD71815_BUCK_DVSSEL,
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val2 | BD71815_BUCK_DVSSEL);
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if (ret)
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return ret;
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}
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ret = rohm_regulator_set_dvs_levels(data->dvs, np, desc,
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cfg->regmap);
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if (ret)
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return ret;
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/*
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* DVS levels were given => use HW-state machine for voltage
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* controls. NOTE: AFAIK, This means that if voltage is changed
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* by SW the ramp-rate is not respected. Should we disable
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* SW voltage control when the HW state machine is used?
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*/
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ret = regmap_update_bits(cfg->regmap, desc->vsel_reg,
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BD71815_BUCK_STBY_DVS,
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BD71815_BUCK_STBY_DVS);
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}
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return ret;
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}
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/*
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* BUCK1/2
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* BUCK1RAMPRATE[1:0] BUCK1 DVS ramp rate setting
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* 00: 10.00mV/usec 10mV 1uS
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* 01: 5.00mV/usec 10mV 2uS
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* 10: 2.50mV/usec 10mV 4uS
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* 11: 1.25mV/usec 10mV 8uS
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*/
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static const unsigned int bd7181x_ramp_table[] = { 1250, 2500, 5000, 10000 };
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static int bd7181x_led_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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int ret;
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int onstatus;
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onstatus = regulator_is_enabled_regmap(rdev);
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ret = regulator_set_current_limit_regmap(rdev, min_uA, max_uA);
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if (!ret) {
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int newstatus;
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newstatus = regulator_is_enabled_regmap(rdev);
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if (onstatus != newstatus) {
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/*
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* HW FIX: spurious led status change detected. Toggle
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* state as a workaround
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*/
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if (onstatus)
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ret = regulator_enable_regmap(rdev);
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else
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ret = regulator_disable_regmap(rdev);
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if (ret)
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dev_err(rdev_get_dev(rdev),
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"failed to revert the LED state (%d)\n",
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ret);
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}
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}
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return ret;
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}
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static int bd7181x_buck12_get_voltage_sel(struct regulator_dev *rdev)
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{
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int rid = rdev_get_id(rdev);
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int ret, regh, regl, val;
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regh = BD71815_REG_BUCK1_VOLT_H + rid * 0x2;
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regl = BD71815_REG_BUCK1_VOLT_L + rid * 0x2;
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ret = regmap_read(rdev->regmap, regh, &val);
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if (ret)
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return ret;
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/*
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* If we use HW state machine based voltage reg selection - then we
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* return BD71815_REG_BUCK1_VOLT_H which is used at RUN.
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* Else we do return the BD71815_REG_BUCK1_VOLT_H or
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* BD71815_REG_BUCK1_VOLT_L depending on which is selected to be used
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* by BD71815_BUCK_DVSSEL bit
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*/
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if ((!(val & BD71815_BUCK_STBY_DVS)) && (!(val & BD71815_BUCK_DVSSEL)))
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ret = regmap_read(rdev->regmap, regl, &val);
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if (ret)
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return ret;
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return val & BD71815_VOLT_MASK;
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}
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/*
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* For Buck 1/2.
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*/
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static int bd7181x_buck12_set_voltage_sel(struct regulator_dev *rdev,
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unsigned int sel)
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{
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int rid = rdev_get_id(rdev);
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int ret, val, reg, regh, regl;
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regh = BD71815_REG_BUCK1_VOLT_H + rid*0x2;
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regl = BD71815_REG_BUCK1_VOLT_L + rid*0x2;
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ret = regmap_read(rdev->regmap, regh, &val);
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if (ret)
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return ret;
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/*
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* If bucks 1 & 2 are controlled by state machine - then the RUN state
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* voltage is set to BD71815_REG_BUCK1_VOLT_H. Changing SUSPEND/LPSR
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* voltages at runtime is not supported by this driver.
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*/
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if (((val & BD71815_BUCK_STBY_DVS))) {
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return regmap_update_bits(rdev->regmap, regh, BD71815_VOLT_MASK,
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sel);
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}
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/* Update new voltage to the register which is not selected now */
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if (val & BD71815_BUCK_DVSSEL)
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reg = regl;
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else
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reg = regh;
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ret = regmap_update_bits(rdev->regmap, reg, BD71815_VOLT_MASK, sel);
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if (ret)
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return ret;
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/* Select the other DVS register to be used */
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return regmap_update_bits(rdev->regmap, regh, BD71815_BUCK_DVSSEL,
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~val);
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}
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static const struct regulator_ops bd7181x_ldo_regulator_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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.list_voltage = regulator_list_voltage_linear,
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.set_voltage_sel = regulator_set_voltage_sel_regmap,
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.get_voltage_sel = regulator_get_voltage_sel_regmap,
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};
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static const struct regulator_ops bd7181x_fixed_regulator_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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.list_voltage = regulator_list_voltage_linear,
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};
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static const struct regulator_ops bd7181x_buck_regulator_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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.list_voltage = regulator_list_voltage_linear,
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.set_voltage_sel = regulator_set_voltage_sel_regmap,
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.get_voltage_sel = regulator_get_voltage_sel_regmap,
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.set_voltage_time_sel = regulator_set_voltage_time_sel,
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};
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static const struct regulator_ops bd7181x_buck12_regulator_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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.list_voltage = regulator_list_voltage_linear,
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.set_voltage_sel = bd7181x_buck12_set_voltage_sel,
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.get_voltage_sel = bd7181x_buck12_get_voltage_sel,
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.set_voltage_time_sel = regulator_set_voltage_time_sel,
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.set_ramp_delay = regulator_set_ramp_delay_regmap,
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};
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static const struct regulator_ops bd7181x_led_regulator_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_current_limit = bd7181x_led_set_current_limit,
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.get_current_limit = regulator_get_current_limit_regmap,
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};
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#define BD71815_FIXED_REG(_name, _id, ereg, emsk, voltage, _dvs) \
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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(#_name), \
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.regulators_node = of_match_ptr("regulators"), \
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.n_voltages = 1, \
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.ops = &bd7181x_fixed_regulator_ops, \
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.type = REGULATOR_VOLTAGE, \
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.id = (_id), \
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.owner = THIS_MODULE, \
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.min_uV = (voltage), \
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.enable_reg = (ereg), \
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.enable_mask = (emsk), \
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.of_parse_cb = set_hw_dvs_levels, \
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}, \
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.dvs = (_dvs), \
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}
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#define BD71815_BUCK_REG(_name, _id, vsel, ereg, min, max, step, _dvs) \
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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(#_name), \
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.regulators_node = of_match_ptr("regulators"), \
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.n_voltages = ((max) - (min)) / (step) + 1, \
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.ops = &bd7181x_buck_regulator_ops, \
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.type = REGULATOR_VOLTAGE, \
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.id = (_id), \
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.owner = THIS_MODULE, \
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.min_uV = (min), \
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.uV_step = (step), \
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.vsel_reg = (vsel), \
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.vsel_mask = BD71815_VOLT_MASK, \
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.enable_reg = (ereg), \
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.enable_mask = BD71815_BUCK_RUN_ON, \
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.of_parse_cb = set_hw_dvs_levels, \
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}, \
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.dvs = (_dvs), \
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}
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#define BD71815_BUCK12_REG(_name, _id, vsel, ereg, min, max, step, \
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_dvs) \
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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(#_name), \
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.regulators_node = of_match_ptr("regulators"), \
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.n_voltages = ((max) - (min)) / (step) + 1, \
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.ops = &bd7181x_buck12_regulator_ops, \
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.type = REGULATOR_VOLTAGE, \
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.id = (_id), \
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.owner = THIS_MODULE, \
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.min_uV = (min), \
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.uV_step = (step), \
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.vsel_reg = (vsel), \
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.vsel_mask = BD71815_VOLT_MASK, \
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.enable_reg = (ereg), \
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.enable_mask = BD71815_BUCK_RUN_ON, \
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.ramp_reg = (ereg), \
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.ramp_mask = BD71815_BUCK_RAMPRATE_MASK, \
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.ramp_delay_table = bd7181x_ramp_table, \
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.n_ramp_values = ARRAY_SIZE(bd7181x_ramp_table),\
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.of_parse_cb = buck12_set_hw_dvs_levels, \
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}, \
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.dvs = (_dvs), \
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}
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#define BD71815_LED_REG(_name, _id, csel, mask, ereg, emsk, currents) \
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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(#_name), \
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.regulators_node = of_match_ptr("regulators"), \
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.n_current_limits = ARRAY_SIZE(currents), \
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.ops = &bd7181x_led_regulator_ops, \
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.type = REGULATOR_CURRENT, \
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.id = (_id), \
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.owner = THIS_MODULE, \
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.curr_table = currents, \
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.csel_reg = (csel), \
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.csel_mask = (mask), \
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.enable_reg = (ereg), \
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.enable_mask = (emsk), \
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}, \
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}
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#define BD71815_LDO_REG(_name, _id, vsel, ereg, emsk, min, max, step, \
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_dvs) \
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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(#_name), \
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.regulators_node = of_match_ptr("regulators"), \
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.n_voltages = ((max) - (min)) / (step) + 1, \
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.ops = &bd7181x_ldo_regulator_ops, \
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.type = REGULATOR_VOLTAGE, \
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.id = (_id), \
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.owner = THIS_MODULE, \
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.min_uV = (min), \
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.uV_step = (step), \
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.vsel_reg = (vsel), \
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.vsel_mask = BD71815_VOLT_MASK, \
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.enable_reg = (ereg), \
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.enable_mask = (emsk), \
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.of_parse_cb = set_hw_dvs_levels, \
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}, \
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.dvs = (_dvs), \
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}
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static const struct bd71815_regulator bd71815_regulators[] = {
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BD71815_BUCK12_REG(buck1, BD71815_BUCK1, BD71815_REG_BUCK1_VOLT_H,
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BD71815_REG_BUCK1_MODE, 800000, 2000000, 25000,
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&buck1_dvs),
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BD71815_BUCK12_REG(buck2, BD71815_BUCK2, BD71815_REG_BUCK2_VOLT_H,
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BD71815_REG_BUCK2_MODE, 800000, 2000000, 25000,
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&buck2_dvs),
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BD71815_BUCK_REG(buck3, BD71815_BUCK3, BD71815_REG_BUCK3_VOLT,
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BD71815_REG_BUCK3_MODE, 1200000, 2700000, 50000,
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&buck3_dvs),
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BD71815_BUCK_REG(buck4, BD71815_BUCK4, BD71815_REG_BUCK4_VOLT,
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BD71815_REG_BUCK4_MODE, 1100000, 1850000, 25000,
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&buck4_dvs),
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BD71815_BUCK_REG(buck5, BD71815_BUCK5, BD71815_REG_BUCK5_VOLT,
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BD71815_REG_BUCK5_MODE, 1800000, 3300000, 50000,
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&buck5_dvs),
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BD71815_LDO_REG(ldo1, BD71815_LDO1, BD71815_REG_LDO1_VOLT,
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BD71815_REG_LDO_MODE1, LDO1_RUN_ON, 800000, 3300000,
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50000, &ldo1_dvs),
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BD71815_LDO_REG(ldo2, BD71815_LDO2, BD71815_REG_LDO2_VOLT,
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BD71815_REG_LDO_MODE2, LDO2_RUN_ON, 800000, 3300000,
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50000, &ldo2_dvs),
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/*
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* Let's default LDO3 to be enabled by SW. We can override ops if DT
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* says LDO3 should be enabled by HW when DCIN is connected.
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*/
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BD71815_LDO_REG(ldo3, BD71815_LDO3, BD71815_REG_LDO3_VOLT,
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BD71815_REG_LDO_MODE2, LDO3_RUN_ON, 800000, 3300000,
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50000, &ldo3_dvs),
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BD71815_LDO_REG(ldo4, BD71815_LDO4, BD71815_REG_LDO4_VOLT,
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BD71815_REG_LDO_MODE3, LDO4_RUN_ON, 800000, 3300000,
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50000, &ldo4_dvs),
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BD71815_LDO_REG(ldo5, BD71815_LDO5, BD71815_REG_LDO5_VOLT_H,
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BD71815_REG_LDO_MODE3, LDO5_RUN_ON, 800000, 3300000,
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50000, &ldo5_dvs),
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BD71815_FIXED_REG(ldodvref, BD71815_LDODVREF, BD71815_REG_LDO_MODE4,
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DVREF_RUN_ON, 3000000, &dvref_dvs),
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BD71815_FIXED_REG(ldolpsr, BD71815_LDOLPSR, BD71815_REG_LDO_MODE4,
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LDO_LPSR_RUN_ON, 1800000, &ldolpsr_dvs),
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BD71815_LED_REG(wled, BD71815_WLED, BD71815_REG_LED_DIMM, LED_DIMM_MASK,
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BD71815_REG_LED_CTRL, LED_RUN_ON,
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bd7181x_wled_currents),
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};
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static int bd7181x_probe(struct platform_device *pdev)
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{
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struct regulator_config config = {};
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int i, ret;
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struct gpio_desc *ldo4_en;
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struct regmap *regmap;
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regmap = dev_get_regmap(pdev->dev.parent, NULL);
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if (!regmap) {
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dev_err(&pdev->dev, "No parent regmap\n");
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return -ENODEV;
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}
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ldo4_en = devm_gpiod_get_from_of_node(&pdev->dev,
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pdev->dev.parent->of_node,
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"rohm,vsel-gpios", 0,
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GPIOD_ASIS, "ldo4-en");
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if (IS_ERR(ldo4_en)) {
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ret = PTR_ERR(ldo4_en);
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if (ret != -ENOENT)
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return ret;
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ldo4_en = NULL;
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}
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/* Disable to go to ship-mode */
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ret = regmap_update_bits(regmap, BD71815_REG_PWRCTRL, RESTARTEN, 0);
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if (ret)
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return ret;
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config.dev = pdev->dev.parent;
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config.regmap = regmap;
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for (i = 0; i < BD71815_REGULATOR_CNT; i++) {
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const struct regulator_desc *desc;
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struct regulator_dev *rdev;
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desc = &bd71815_regulators[i].desc;
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if (i == BD71815_LDO4)
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config.ena_gpiod = ldo4_en;
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else
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config.ena_gpiod = NULL;
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rdev = devm_regulator_register(&pdev->dev, desc, &config);
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if (IS_ERR(rdev)) {
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dev_err(&pdev->dev,
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"failed to register %s regulator\n",
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desc->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 bd7181x_pmic_id[] = {
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{ "bd71815-pmic", ROHM_CHIP_TYPE_BD71815 },
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{ },
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};
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MODULE_DEVICE_TABLE(platform, bd7181x_pmic_id);
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static struct platform_driver bd7181x_regulator = {
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.driver = {
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.name = "bd7181x-pmic",
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},
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.probe = bd7181x_probe,
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.id_table = bd7181x_pmic_id,
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};
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module_platform_driver(bd7181x_regulator);
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MODULE_AUTHOR("Tony Luo <luofc@embedinfo.com>");
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MODULE_DESCRIPTION("BD71815 voltage regulator driver");
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MODULE_LICENSE("GPL v2");
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MODULE_ALIAS("platform:bd7181x-pmic");
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