21b72156ed
Few ROHM PMICs allow setting the voltage states for different system states like RUN, IDLE, SUSPEND and LPSR. States are then changed via SoC specific mechanisms. bd718x7 driver implemented device-tree parsing functions for these state specific voltages. The parsing functions can be re-used by other ROHM chip drivers like bd71828. Split the generic functions from bd718x7-regulator.c to rohm-regulator.c and export them for other modules to use. Signed-off-by: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com> Acked-by: Mark Brown <broonie@kernel.org> Signed-off-by: Lee Jones <lee.jones@linaro.org>
87 lines
2.5 KiB
C
87 lines
2.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/* Copyright (C) 2018 ROHM Semiconductors */
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#ifndef __LINUX_MFD_ROHM_H__
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#define __LINUX_MFD_ROHM_H__
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#include <linux/regmap.h>
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#include <linux/regulator/driver.h>
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enum rohm_chip_type {
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ROHM_CHIP_TYPE_BD71837 = 0,
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ROHM_CHIP_TYPE_BD71847,
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ROHM_CHIP_TYPE_BD70528,
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ROHM_CHIP_TYPE_BD71828,
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ROHM_CHIP_TYPE_AMOUNT
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};
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struct rohm_regmap_dev {
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struct device *dev;
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struct regmap *regmap;
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};
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enum {
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ROHM_DVS_LEVEL_UNKNOWN,
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ROHM_DVS_LEVEL_RUN,
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ROHM_DVS_LEVEL_IDLE,
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ROHM_DVS_LEVEL_SUSPEND,
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ROHM_DVS_LEVEL_LPSR,
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ROHM_DVS_LEVEL_MAX = ROHM_DVS_LEVEL_LPSR,
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};
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/**
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* struct rohm_dvs_config - dynamic voltage scaling register descriptions
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*
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* @level_map: bitmap representing supported run-levels for this
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* regulator
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* @run_reg: register address for regulator config at 'run' state
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* @run_mask: value mask for regulator voltages at 'run' state
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* @run_on_mask: enable mask for regulator at 'run' state
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* @idle_reg: register address for regulator config at 'idle' state
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* @idle_mask: value mask for regulator voltages at 'idle' state
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* @idle_on_mask: enable mask for regulator at 'idle' state
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* @suspend_reg: register address for regulator config at 'suspend' state
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* @suspend_mask: value mask for regulator voltages at 'suspend' state
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* @suspend_on_mask: enable mask for regulator at 'suspend' state
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* @lpsr_reg: register address for regulator config at 'lpsr' state
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* @lpsr_mask: value mask for regulator voltages at 'lpsr' state
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* @lpsr_on_mask: enable mask for regulator at 'lpsr' state
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*
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* Description of ROHM PMICs voltage configuration registers for different
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* system states. This is used to correctly configure the PMIC at startup
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* based on values read from DT.
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*/
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struct rohm_dvs_config {
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uint64_t level_map;
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unsigned int run_reg;
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unsigned int run_mask;
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unsigned int run_on_mask;
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unsigned int idle_reg;
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unsigned int idle_mask;
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unsigned int idle_on_mask;
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unsigned int suspend_reg;
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unsigned int suspend_mask;
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unsigned int suspend_on_mask;
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unsigned int lpsr_reg;
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unsigned int lpsr_mask;
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unsigned int lpsr_on_mask;
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};
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#if IS_ENABLED(CONFIG_REGULATOR_ROHM)
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int rohm_regulator_set_dvs_levels(const struct rohm_dvs_config *dvs,
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struct device_node *np,
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const struct regulator_desc *desc,
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struct regmap *regmap);
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#else
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static inline int rohm_regulator_set_dvs_levels(const struct rohm_dvs_config *dvs,
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struct device_node *np,
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const struct regulator_desc *desc,
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struct regmap *regmap)
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{
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return 0;
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}
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#endif
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#endif
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