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634 lines
19 KiB
634 lines
19 KiB
// 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 <[email protected]> |
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// |
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// Partially rewritten at 2021 by |
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// Matti Vaittinen <[email protected]> |
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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, \ |
|
.ops = &bd7181x_buck12_regulator_ops, \ |
|
.type = REGULATOR_VOLTAGE, \ |
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.id = (_id), \ |
|
.owner = THIS_MODULE, \ |
|
.min_uV = (min), \ |
|
.uV_step = (step), \ |
|
.vsel_reg = (vsel), \ |
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.vsel_mask = BD71815_VOLT_MASK, \ |
|
.enable_reg = (ereg), \ |
|
.enable_mask = BD71815_BUCK_RUN_ON, \ |
|
.ramp_reg = (ereg), \ |
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.ramp_mask = BD71815_BUCK_RAMPRATE_MASK, \ |
|
.ramp_delay_table = bd7181x_ramp_table, \ |
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.n_ramp_values = ARRAY_SIZE(bd7181x_ramp_table),\ |
|
.of_parse_cb = buck12_set_hw_dvs_levels, \ |
|
}, \ |
|
.dvs = (_dvs), \ |
|
} |
|
|
|
#define BD71815_LED_REG(_name, _id, csel, mask, ereg, emsk, currents) \ |
|
[(_id)] = { \ |
|
.desc = { \ |
|
.name = #_name, \ |
|
.of_match = of_match_ptr(#_name), \ |
|
.regulators_node = of_match_ptr("regulators"), \ |
|
.n_current_limits = ARRAY_SIZE(currents), \ |
|
.ops = &bd7181x_led_regulator_ops, \ |
|
.type = REGULATOR_CURRENT, \ |
|
.id = (_id), \ |
|
.owner = THIS_MODULE, \ |
|
.curr_table = currents, \ |
|
.csel_reg = (csel), \ |
|
.csel_mask = (mask), \ |
|
.enable_reg = (ereg), \ |
|
.enable_mask = (emsk), \ |
|
}, \ |
|
} |
|
|
|
#define BD71815_LDO_REG(_name, _id, vsel, ereg, emsk, min, max, step, \ |
|
_dvs) \ |
|
[(_id)] = { \ |
|
.desc = { \ |
|
.name = #_name, \ |
|
.of_match = of_match_ptr(#_name), \ |
|
.regulators_node = of_match_ptr("regulators"), \ |
|
.n_voltages = ((max) - (min)) / (step) + 1, \ |
|
.ops = &bd7181x_ldo_regulator_ops, \ |
|
.type = REGULATOR_VOLTAGE, \ |
|
.id = (_id), \ |
|
.owner = THIS_MODULE, \ |
|
.min_uV = (min), \ |
|
.uV_step = (step), \ |
|
.vsel_reg = (vsel), \ |
|
.vsel_mask = BD71815_VOLT_MASK, \ |
|
.enable_reg = (ereg), \ |
|
.enable_mask = (emsk), \ |
|
.of_parse_cb = set_hw_dvs_levels, \ |
|
}, \ |
|
.dvs = (_dvs), \ |
|
} |
|
|
|
static const struct bd71815_regulator bd71815_regulators[] = { |
|
BD71815_BUCK12_REG(buck1, BD71815_BUCK1, BD71815_REG_BUCK1_VOLT_H, |
|
BD71815_REG_BUCK1_MODE, 800000, 2000000, 25000, |
|
&buck1_dvs), |
|
BD71815_BUCK12_REG(buck2, BD71815_BUCK2, BD71815_REG_BUCK2_VOLT_H, |
|
BD71815_REG_BUCK2_MODE, 800000, 2000000, 25000, |
|
&buck2_dvs), |
|
BD71815_BUCK_REG(buck3, BD71815_BUCK3, BD71815_REG_BUCK3_VOLT, |
|
BD71815_REG_BUCK3_MODE, 1200000, 2700000, 50000, |
|
&buck3_dvs), |
|
BD71815_BUCK_REG(buck4, BD71815_BUCK4, BD71815_REG_BUCK4_VOLT, |
|
BD71815_REG_BUCK4_MODE, 1100000, 1850000, 25000, |
|
&buck4_dvs), |
|
BD71815_BUCK_REG(buck5, BD71815_BUCK5, BD71815_REG_BUCK5_VOLT, |
|
BD71815_REG_BUCK5_MODE, 1800000, 3300000, 50000, |
|
&buck5_dvs), |
|
BD71815_LDO_REG(ldo1, BD71815_LDO1, BD71815_REG_LDO1_VOLT, |
|
BD71815_REG_LDO_MODE1, LDO1_RUN_ON, 800000, 3300000, |
|
50000, &ldo1_dvs), |
|
BD71815_LDO_REG(ldo2, BD71815_LDO2, BD71815_REG_LDO2_VOLT, |
|
BD71815_REG_LDO_MODE2, LDO2_RUN_ON, 800000, 3300000, |
|
50000, &ldo2_dvs), |
|
/* |
|
* Let's default LDO3 to be enabled by SW. We can override ops if DT |
|
* says LDO3 should be enabled by HW when DCIN is connected. |
|
*/ |
|
BD71815_LDO_REG(ldo3, BD71815_LDO3, BD71815_REG_LDO3_VOLT, |
|
BD71815_REG_LDO_MODE2, LDO3_RUN_ON, 800000, 3300000, |
|
50000, &ldo3_dvs), |
|
BD71815_LDO_REG(ldo4, BD71815_LDO4, BD71815_REG_LDO4_VOLT, |
|
BD71815_REG_LDO_MODE3, LDO4_RUN_ON, 800000, 3300000, |
|
50000, &ldo4_dvs), |
|
BD71815_LDO_REG(ldo5, BD71815_LDO5, BD71815_REG_LDO5_VOLT_H, |
|
BD71815_REG_LDO_MODE3, LDO5_RUN_ON, 800000, 3300000, |
|
50000, &ldo5_dvs), |
|
BD71815_FIXED_REG(ldodvref, BD71815_LDODVREF, BD71815_REG_LDO_MODE4, |
|
DVREF_RUN_ON, 3000000, &dvref_dvs), |
|
BD71815_FIXED_REG(ldolpsr, BD71815_LDOLPSR, BD71815_REG_LDO_MODE4, |
|
LDO_LPSR_RUN_ON, 1800000, &ldolpsr_dvs), |
|
BD71815_LED_REG(wled, BD71815_WLED, BD71815_REG_LED_DIMM, LED_DIMM_MASK, |
|
BD71815_REG_LED_CTRL, LED_RUN_ON, |
|
bd7181x_wled_currents), |
|
}; |
|
|
|
static int bd7181x_probe(struct platform_device *pdev) |
|
{ |
|
struct regulator_config config = {}; |
|
int i, ret; |
|
struct gpio_desc *ldo4_en; |
|
struct regmap *regmap; |
|
|
|
regmap = dev_get_regmap(pdev->dev.parent, NULL); |
|
if (!regmap) { |
|
dev_err(&pdev->dev, "No parent regmap\n"); |
|
return -ENODEV; |
|
} |
|
ldo4_en = devm_gpiod_get_from_of_node(&pdev->dev, |
|
pdev->dev.parent->of_node, |
|
"rohm,vsel-gpios", 0, |
|
GPIOD_ASIS, "ldo4-en"); |
|
|
|
if (IS_ERR(ldo4_en)) { |
|
ret = PTR_ERR(ldo4_en); |
|
if (ret != -ENOENT) |
|
return ret; |
|
ldo4_en = NULL; |
|
} |
|
|
|
/* Disable to go to ship-mode */ |
|
ret = regmap_update_bits(regmap, BD71815_REG_PWRCTRL, RESTARTEN, 0); |
|
if (ret) |
|
return ret; |
|
|
|
config.dev = pdev->dev.parent; |
|
config.regmap = regmap; |
|
|
|
for (i = 0; i < BD71815_REGULATOR_CNT; i++) { |
|
const struct regulator_desc *desc; |
|
struct regulator_dev *rdev; |
|
|
|
desc = &bd71815_regulators[i].desc; |
|
|
|
if (i == BD71815_LDO4) |
|
config.ena_gpiod = ldo4_en; |
|
else |
|
config.ena_gpiod = NULL; |
|
|
|
rdev = devm_regulator_register(&pdev->dev, desc, &config); |
|
if (IS_ERR(rdev)) { |
|
dev_err(&pdev->dev, |
|
"failed to register %s regulator\n", |
|
desc->name); |
|
return PTR_ERR(rdev); |
|
} |
|
} |
|
return 0; |
|
} |
|
|
|
static const struct platform_device_id bd7181x_pmic_id[] = { |
|
{ "bd71815-pmic", ROHM_CHIP_TYPE_BD71815 }, |
|
{ }, |
|
}; |
|
MODULE_DEVICE_TABLE(platform, bd7181x_pmic_id); |
|
|
|
static struct platform_driver bd7181x_regulator = { |
|
.driver = { |
|
.name = "bd7181x-pmic", |
|
}, |
|
.probe = bd7181x_probe, |
|
.id_table = bd7181x_pmic_id, |
|
}; |
|
module_platform_driver(bd7181x_regulator); |
|
|
|
MODULE_AUTHOR("Tony Luo <[email protected]>"); |
|
MODULE_DESCRIPTION("BD71815 voltage regulator driver"); |
|
MODULE_LICENSE("GPL v2"); |
|
MODULE_ALIAS("platform:bd7181x-pmic");
|
|
|