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adfdfcbdbd
This is simillar as fixed-regulator. Used to extract regulator parent from the device tree. Without that property used, the parent regulator can be shut down (if not an always on). Thus leading to inappropriate behavior: On am62-SP-SK this fix is required to avoid tps65219 ldo1 (SDMMC rail) to be shut down after boot completion. Signed-off-by: Jerome Neanne <jneanne@baylibre.com> Link: https://lore.kernel.org/r/20220929132526.29427-2-jneanne@baylibre.com Signed-off-by: Mark Brown <broonie@kernel.org>
81 lines
2.1 KiB
C
81 lines
2.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* gpio-regulator.h
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*
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* Copyright 2011 Heiko Stuebner <heiko@sntech.de>
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*
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* based on 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_GPIO_H
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#define __REGULATOR_GPIO_H
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#include <linux/gpio/consumer.h>
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struct regulator_init_data;
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enum regulator_type;
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/**
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* struct gpio_regulator_state - state description
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* @value: microvolts or microamps
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* @gpios: bitfield of gpio target-states for the value
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*
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* This structure describes a supported setting of the regulator
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* and the necessary gpio-state to achieve it.
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*
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* The n-th bit in the bitfield describes the state of the n-th GPIO
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* from the gpios-array defined in gpio_regulator_config below.
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*/
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struct gpio_regulator_state {
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int value;
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int gpios;
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};
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/**
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* struct gpio_regulator_config - 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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* @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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* @startup_delay: Start-up time in microseconds
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* @gflags: Array of GPIO configuration flags for initial
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* states
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* @ngpios: Number of GPIOs and configurations available
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* @states: Array of gpio_regulator_state entries describing
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* the gpio state for specific voltages
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* @nr_states: Number of states available
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* @regulator_type: either REGULATOR_CURRENT or REGULATOR_VOLTAGE
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* @init_data: regulator_init_data
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*
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* This structure contains gpio-voltage regulator configuration
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* information that must be passed by platform code to the
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* gpio-voltage regulator driver.
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*/
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struct gpio_regulator_config {
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const char *supply_name;
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const char *input_supply;
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unsigned enabled_at_boot:1;
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unsigned startup_delay;
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enum gpiod_flags *gflags;
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int ngpios;
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struct gpio_regulator_state *states;
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int nr_states;
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enum regulator_type type;
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struct regulator_init_data *init_data;
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};
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#endif
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