2874c5fd28
Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 3029 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070032.746973796@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
66 lines
2.1 KiB
C
66 lines
2.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* Copyright (C) 2013 STMicroelectronics (R&D) Limited
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* Author: Stephen Gallimore <stephen.gallimore@st.com>
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*/
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#ifndef __STI_RESET_SYSCFG_H
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#define __STI_RESET_SYSCFG_H
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#include <linux/device.h>
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#include <linux/regmap.h>
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#include <linux/reset-controller.h>
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/**
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* Reset channel description for a system configuration register based
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* reset controller.
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*
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* @compatible: Compatible string of the syscon regmap containing this
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* channel's control and ack (status) bits.
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* @reset: Regmap field description of the channel's reset bit.
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* @ack: Regmap field description of the channel's acknowledge bit.
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*/
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struct syscfg_reset_channel_data {
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const char *compatible;
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struct reg_field reset;
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struct reg_field ack;
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};
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#define _SYSCFG_RST_CH(_c, _rr, _rb, _ar, _ab) \
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{ .compatible = _c, \
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.reset = REG_FIELD(_rr, _rb, _rb), \
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.ack = REG_FIELD(_ar, _ab, _ab), }
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#define _SYSCFG_RST_CH_NO_ACK(_c, _rr, _rb) \
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{ .compatible = _c, \
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.reset = REG_FIELD(_rr, _rb, _rb), }
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/**
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* Description of a system configuration register based reset controller.
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*
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* @wait_for_ack: The controller will wait for reset assert and de-assert to
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* be "ack'd" in a channel's ack field.
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* @active_low: Are the resets in this controller active low, i.e. clearing
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* the reset bit puts the hardware into reset.
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* @nr_channels: The number of reset channels in this controller.
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* @channels: An array of reset channel descriptions.
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*/
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struct syscfg_reset_controller_data {
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bool wait_for_ack;
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bool active_low;
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int nr_channels;
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const struct syscfg_reset_channel_data *channels;
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};
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/**
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* syscfg_reset_probe(): platform device probe function used by syscfg
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* reset controller drivers. This registers a reset
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* controller configured by the OF match data for
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* the compatible device which should be of type
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* "struct syscfg_reset_controller_data".
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*
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* @pdev: platform device
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*/
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int syscfg_reset_probe(struct platform_device *pdev);
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#endif /* __STI_RESET_SYSCFG_H */
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