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![Matti Vaittinen](/assets/img/avatar_default.png)
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>
86 lines
2.5 KiB
C
86 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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