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f7907e57ae
Depends on board design, the gpio controlling regulator may connects with a big capacitance. When need off, it takes some time to let the regulator to be truly off. If not add enough delay, the regulator might have always been on, so introduce off-on-delay to handle such case. Signed-off-by: Peng Fan <peng.fan@nxp.com> Link: https://lore.kernel.org/r/1572311875-22880-3-git-send-email-peng.fan@nxp.com Signed-off-by: Mark Brown <broonie@kernel.org>
60 lines
1.7 KiB
C
60 lines
1.7 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* fixed.h
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*
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* Copyright 2008 Wolfson Microelectronics PLC.
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*
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* Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
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*
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* Copyright (c) 2009 Nokia Corporation
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* Roger Quadros <ext-roger.quadros@nokia.com>
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*/
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#ifndef __REGULATOR_FIXED_H
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#define __REGULATOR_FIXED_H
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struct regulator_init_data;
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/**
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* struct fixed_voltage_config - fixed_voltage_config structure
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* @supply_name: Name of the regulator supply
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* @input_supply: Name of the input regulator supply
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* @microvolts: Output voltage of regulator
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* @startup_delay: Start-up time in microseconds
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* @enabled_at_boot: Whether regulator has been enabled at
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* boot or not. 1 = Yes, 0 = No
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* This is used to keep the regulator at
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* the default state
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* @init_data: regulator_init_data
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*
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* This structure contains fixed voltage regulator configuration
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* information that must be passed by platform code to the fixed
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* voltage regulator driver.
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*/
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struct fixed_voltage_config {
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const char *supply_name;
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const char *input_supply;
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int microvolts;
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unsigned startup_delay;
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unsigned int off_on_delay;
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unsigned enabled_at_boot:1;
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struct regulator_init_data *init_data;
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};
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struct regulator_consumer_supply;
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#if IS_ENABLED(CONFIG_REGULATOR)
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struct platform_device *regulator_register_always_on(int id, const char *name,
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struct regulator_consumer_supply *supplies, int num_supplies, int uv);
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#else
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static inline struct platform_device *regulator_register_always_on(int id, const char *name,
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struct regulator_consumer_supply *supplies, int num_supplies, int uv)
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{
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return NULL;
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}
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#endif
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#define regulator_register_fixed(id, s, ns) regulator_register_always_on(id, \
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"fixed-dummy", s, ns, 0)
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#endif
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